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| author | Jiri Kosina <jkosina@suse.cz> | 2020-12-16 13:41:05 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2020-12-16 13:41:05 +0300 |
| commit | e77bc7dc9af0ec53996367b2053dfafee83b7edb (patch) | |
| tree | 7850cb0cc9e0d7308992b2b983052c5f209245bd /Documentation/userspace-api | |
| parent | 105856b36c0cefc2fa1c1e649d75da71e2e38c31 (diff) | |
| parent | 82514ecd61435c2d47c235e1343872b38db17be4 (diff) | |
| download | linux-e77bc7dc9af0ec53996367b2053dfafee83b7edb.tar.xz | |
Merge branch 'for-5.11/elecom' into for-linus
- support for EX-G M-XGL20DLBK device, from YOSHIOKA Takuma
Diffstat (limited to 'Documentation/userspace-api')
225 files changed, 1077 insertions, 1730 deletions
diff --git a/Documentation/userspace-api/index.rst b/Documentation/userspace-api/index.rst index 69fc5167e648..acd2cc2a538d 100644 --- a/Documentation/userspace-api/index.rst +++ b/Documentation/userspace-api/index.rst @@ -22,6 +22,7 @@ place where this information is gathered. spec_ctrl accelerators/ocxl ioctl/index + iommu media/index .. only:: subproject and html diff --git a/Documentation/userspace-api/media/cec/cec-func-close.rst b/Documentation/userspace-api/media/cec/cec-func-close.rst index 33c563f414a8..409e70a5f80f 100644 --- a/Documentation/userspace-api/media/cec/cec-func-close.rst +++ b/Documentation/userspace-api/media/cec/cec-func-close.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _cec-func-close: @@ -11,7 +12,6 @@ Name cec-close - Close a cec device - Synopsis ======== @@ -19,16 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: cec-close Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -36,11 +33,10 @@ Description Closes the cec device. Resources associated with the file descriptor are freed. The device configuration remain unchanged. - Return Value ============ -:c:func:`close() <cec-close>` returns 0 on success. On error, -1 is returned, and +:c:func:`close()` returns 0 on success. On error, -1 is returned, and ``errno`` is set appropriately. Possible error codes are: ``EBADF`` diff --git a/Documentation/userspace-api/media/cec/cec-func-ioctl.rst b/Documentation/userspace-api/media/cec/cec-func-ioctl.rst index 3b88230fad80..7c93f86de6cc 100644 --- a/Documentation/userspace-api/media/cec/cec-func-ioctl.rst +++ b/Documentation/userspace-api/media/cec/cec-func-ioctl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _cec-func-ioctl: @@ -18,15 +19,13 @@ Synopsis #include <sys/ioctl.h> - -.. c:function:: int ioctl( int fd, int request, void *argp ) - :name: cec-ioctl +``int ioctl(int fd, int request, void *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``request`` CEC ioctl request code as defined in the cec.h header file, for @@ -35,11 +34,10 @@ Arguments ``argp`` Pointer to a request-specific structure. - Description =========== -The :c:func:`ioctl() <cec-ioctl>` function manipulates cec device parameters. The +The :c:func:`ioctl()` function manipulates cec device parameters. The argument ``fd`` must be an open file descriptor. The ioctl ``request`` code specifies the cec function to be called. It @@ -51,7 +49,6 @@ their parameters are located in the cec.h header file. All cec ioctl requests, their respective function and parameters are specified in :ref:`cec-user-func`. - Return Value ============ diff --git a/Documentation/userspace-api/media/cec/cec-func-open.rst b/Documentation/userspace-api/media/cec/cec-func-open.rst index 887bfd2a755e..d86563a34b9e 100644 --- a/Documentation/userspace-api/media/cec/cec-func-open.rst +++ b/Documentation/userspace-api/media/cec/cec-func-open.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _cec-func-open: @@ -18,10 +19,7 @@ Synopsis #include <fcntl.h> - .. c:function:: int open( const char *device_name, int flags ) - :name: cec-open - Arguments ========= @@ -42,11 +40,10 @@ Arguments Other flags have no effect. - Description =========== -To open a cec device applications call :c:func:`open() <cec-open>` with the +To open a cec device applications call :c:func:`open()` with the desired device name. The function has no side effects; the device configuration remain unchanged. @@ -54,11 +51,10 @@ When the device is opened in read-only mode, attempts to modify its configuration will result in an error, and ``errno`` will be set to EBADF. - Return Value ============ -:c:func:`open() <cec-open>` returns the new file descriptor on success. On error, +:c:func:`open()` returns the new file descriptor on success. On error, -1 is returned, and ``errno`` is set appropriately. Possible error codes include: diff --git a/Documentation/userspace-api/media/cec/cec-func-poll.rst b/Documentation/userspace-api/media/cec/cec-func-poll.rst index 2d87136e9a3f..980bbfc0bcce 100644 --- a/Documentation/userspace-api/media/cec/cec-func-poll.rst +++ b/Documentation/userspace-api/media/cec/cec-func-poll.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _cec-func-poll: @@ -11,7 +12,6 @@ Name cec-poll - Wait for some event on a file descriptor - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <sys/poll.h> - .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout ) - :name: cec-poll Arguments ========= @@ -35,14 +33,13 @@ Arguments ``timeout`` Timeout to wait for events - Description =========== -With the :c:func:`poll() <cec-poll>` function applications can wait for CEC +With the :c:func:`poll()` function applications can wait for CEC events. -On success :c:func:`poll() <cec-poll>` returns the number of file descriptors +On success :c:func:`poll()` returns the number of file descriptors that have been selected (that is, file descriptors for which the ``revents`` field of the respective struct :c:type:`pollfd` is non-zero). CEC devices set the ``POLLIN`` and ``POLLRDNORM`` flags in @@ -53,13 +50,12 @@ then the ``POLLPRI`` flag is set. When the function times out it returns a value of zero, on failure it returns -1 and the ``errno`` variable is set appropriately. -For more details see the :c:func:`poll() <cec-poll>` manual page. - +For more details see the :c:func:`poll()` manual page. Return Value ============ -On success, :c:func:`poll() <cec-poll>` returns the number structures which have +On success, :c:func:`poll()` returns the number structures which have non-zero ``revents`` fields, or zero if the call timed out. On error -1 is returned, and the ``errno`` variable is set appropriately: diff --git a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-caps.rst b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-caps.rst index 7f25365ce0fb..c7309a2fcbce 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-caps.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-caps.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_ADAP_G_CAPS: @@ -14,18 +15,18 @@ CEC_ADAP_G_CAPS - Query device capabilities Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_ADAP_G_CAPS, struct cec_caps *argp ) - :name: CEC_ADAP_G_CAPS +.. c:macro:: CEC_ADAP_G_CAPS + +``int ioctl(int fd, CEC_ADAP_G_CAPS, struct cec_caps *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` - Description =========== @@ -62,7 +63,6 @@ returns the information to the application. The ioctl never fails. - CEC Framework API version, formatted with the ``KERNEL_VERSION()`` macro. - .. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.6cm}| .. _cec-capabilities: diff --git a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-conn-info.rst b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-conn-info.rst index 6818ddf1495c..13116b0b5c17 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-conn-info.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-conn-info.rst @@ -2,6 +2,8 @@ .. .. Copyright 2019 Google LLC .. +.. c:namespace:: CEC + .. _CEC_ADAP_G_CONNECTOR_INFO: ******************************* @@ -16,18 +18,18 @@ CEC_ADAP_G_CONNECTOR_INFO - Query HDMI connector information Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_ADAP_G_CONNECTOR_INFO, struct cec_connector_info *argp ) - :name: CEC_ADAP_G_CONNECTOR_INFO +.. c:macro:: CEC_ADAP_G_CONNECTOR_INFO + +``int ioctl(int fd, CEC_ADAP_G_CONNECTOR_INFO, struct cec_connector_info *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` - Description =========== @@ -57,7 +59,6 @@ is only available if the ``CEC_CAP_CONNECTOR_INFO`` capability is set. * - } - - .. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.6cm}| .. _connector-type: diff --git a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-log-addrs.rst b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-log-addrs.rst index 1ca893270ae9..c760c07b6b3f 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-log-addrs.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-log-addrs.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_ADAP_LOG_ADDRS: .. _CEC_ADAP_G_LOG_ADDRS: @@ -13,21 +14,22 @@ Name CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS - Get or set the logical addresses - Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_ADAP_G_LOG_ADDRS, struct cec_log_addrs *argp ) - :name: CEC_ADAP_G_LOG_ADDRS +.. c:macro:: CEC_ADAP_G_LOG_ADDRS + +``int ioctl(int fd, CEC_ADAP_G_LOG_ADDRS, struct cec_log_addrs *argp)`` + +.. c:macro:: CEC_ADAP_S_LOG_ADDRS -.. c:function:: int ioctl( int fd, CEC_ADAP_S_LOG_ADDRS, struct cec_log_addrs *argp ) - :name: CEC_ADAP_S_LOG_ADDRS +``int ioctl(int fd, CEC_ADAP_S_LOG_ADDRS, struct cec_log_addrs *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`cec_log_addrs`. @@ -148,7 +150,6 @@ logical address types are already defined will return with error ``EBUSY``. give the CEC framework more information about the device type, even though the framework won't use it directly in the CEC message. - .. tabularcolumns:: |p{7.8cm}|p{1.0cm}|p{8.7cm}| .. _cec-log-addrs-flags: @@ -185,7 +186,6 @@ logical address types are already defined will return with error ``EBUSY``. All other messages are ignored. - .. tabularcolumns:: |p{7.8cm}|p{1.0cm}|p{8.7cm}| .. _cec-versions: @@ -211,7 +211,6 @@ logical address types are already defined will return with error ``EBUSY``. - 6 - CEC version according to the HDMI 2.0 standard. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _cec-prim-dev-types: @@ -257,7 +256,6 @@ logical address types are already defined will return with error ``EBUSY``. - 7 - Use for a video processor device. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _cec-log-addr-types: @@ -306,7 +304,6 @@ logical address types are already defined will return with error ``EBUSY``. Control). - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _cec-all-dev-types-flags: @@ -348,7 +345,6 @@ logical address types are already defined will return with error ``EBUSY``. - This supports the CEC Switch or Video Processing type. - Return Value ============ diff --git a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-phys-addr.rst b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-phys-addr.rst index a10443be1b26..fb22f6894f26 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-adap-g-phys-addr.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-adap-g-phys-addr.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_ADAP_PHYS_ADDR: .. _CEC_ADAP_G_PHYS_ADDR: @@ -13,21 +14,22 @@ Name CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR - Get or set the physical address - Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_ADAP_G_PHYS_ADDR, __u16 *argp ) - :name: CEC_ADAP_G_PHYS_ADDR +.. c:macro:: CEC_ADAP_G_PHYS_ADDR + +``int ioctl(int fd, CEC_ADAP_G_PHYS_ADDR, __u16 *argp)`` -.. c:function:: int ioctl( int fd, CEC_ADAP_S_PHYS_ADDR, __u16 *argp ) - :name: CEC_ADAP_S_PHYS_ADDR +.. c:macro:: CEC_ADAP_S_PHYS_ADDR + +``int ioctl(int fd, CEC_ADAP_S_PHYS_ADDR, __u16 *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to the CEC address. @@ -71,7 +73,6 @@ For example, the EDID for each HDMI input of the TV will have a different physical address of the form a.0.0.0 that the sources will read out and use as their physical address. - Return Value ============ diff --git a/Documentation/userspace-api/media/cec/cec-ioc-dqevent.rst b/Documentation/userspace-api/media/cec/cec-ioc-dqevent.rst index 3bc81fc5a73f..736fda5ad73d 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-dqevent.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-dqevent.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_DQEVENT: @@ -11,22 +12,21 @@ Name CEC_DQEVENT - Dequeue a CEC event - Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_DQEVENT, struct cec_event *argp ) - :name: CEC_DQEVENT +.. c:macro:: CEC_DQEVENT + +``int ioctl(int fd, CEC_DQEVENT, struct cec_event *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` - Description =========== @@ -72,7 +72,6 @@ it is guaranteed that the state did change in between the two events. the HDMI driver is still configuring the device or because the HDMI device was unbound. - .. c:type:: cec_event_lost_msgs .. tabularcolumns:: |p{1.0cm}|p{2.0cm}|p{14.5cm}| @@ -94,7 +93,6 @@ it is guaranteed that the state did change in between the two events. replied to within a second according to the CEC specification, this is more than enough. - .. tabularcolumns:: |p{1.0cm}|p{4.4cm}|p{2.5cm}|p{9.6cm}| .. c:type:: cec_event @@ -130,7 +128,6 @@ it is guaranteed that the state did change in between the two events. * - } - - .. tabularcolumns:: |p{5.6cm}|p{0.9cm}|p{11.0cm}| .. _cec-events: @@ -204,7 +201,6 @@ it is guaranteed that the state did change in between the two events. if the 5V is high, then an initial event will be generated for that filehandle. - .. tabularcolumns:: |p{6.0cm}|p{0.6cm}|p{10.9cm}| .. _cec-event-flags: @@ -230,7 +226,6 @@ it is guaranteed that the state did change in between the two events. This is an indication that the application cannot keep up. - Return Value ============ diff --git a/Documentation/userspace-api/media/cec/cec-ioc-g-mode.rst b/Documentation/userspace-api/media/cec/cec-ioc-g-mode.rst index 2093e373c93c..d3387b1fa7c5 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-g-mode.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-g-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_MODE: .. _CEC_G_MODE: @@ -13,17 +14,19 @@ CEC_G_MODE, CEC_S_MODE - Get or set exclusive use of the CEC adapter Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_G_MODE, __u32 *argp ) - :name: CEC_G_MODE +.. c:macro:: CEC_G_MODE -.. c:function:: int ioctl( int fd, CEC_S_MODE, __u32 *argp ) - :name: CEC_S_MODE +``int ioctl(int fd, CEC_G_MODE, __u32 *argp)`` + +.. c:macro:: CEC_S_MODE + +``int ioctl(int fd, CEC_S_MODE, __u32 *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to CEC mode. @@ -101,7 +104,6 @@ Available initiator modes are: then an attempt to become one will return the ``EBUSY`` error code error. - Available follower modes are: .. tabularcolumns:: |p{6.6cm}|p{0.9cm}|p{10.0cm}| @@ -193,7 +195,6 @@ Available follower modes are: the process has the ``CAP_NET_ADMIN`` capability. If that is not set, then the ``EPERM`` error code is returned. - Core message processing details: .. tabularcolumns:: |p{6.6cm}|p{10.9cm}| @@ -272,7 +273,6 @@ Core message processing details: and then just pass the message on to the follower(s). - Return Value ============ diff --git a/Documentation/userspace-api/media/cec/cec-ioc-receive.rst b/Documentation/userspace-api/media/cec/cec-ioc-receive.rst index 9d629d46973c..b2fc051e99f4 100644 --- a/Documentation/userspace-api/media/cec/cec-ioc-receive.rst +++ b/Documentation/userspace-api/media/cec/cec-ioc-receive.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: CEC .. _CEC_TRANSMIT: .. _CEC_RECEIVE: @@ -12,21 +13,22 @@ Name CEC_RECEIVE, CEC_TRANSMIT - Receive or transmit a CEC message - Synopsis ======== -.. c:function:: int ioctl( int fd, CEC_RECEIVE, struct cec_msg \*argp ) - :name: CEC_RECEIVE +.. c:macro:: CEC_RECEIVE + +``int ioctl(int fd, CEC_RECEIVE, struct cec_msg *argp)`` -.. c:function:: int ioctl( int fd, CEC_TRANSMIT, struct cec_msg \*argp ) - :name: CEC_TRANSMIT +.. c:macro:: CEC_TRANSMIT + +``int ioctl(int fd, CEC_TRANSMIT, struct cec_msg *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <cec-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct cec_msg. @@ -194,7 +196,6 @@ View On' messages from initiator 0xf ('Unregistered') to destination 0 ('TV'). supports this, otherwise it is always 0. This counter is only valid if the :ref:`CEC_TX_STATUS_ERROR <CEC-TX-STATUS-ERROR>` status bit is set. - .. tabularcolumns:: |p{6.2cm}|p{1.0cm}|p{10.3cm}| .. _cec-msg-flags: @@ -228,7 +229,6 @@ View On' messages from initiator 0xf ('Unregistered') to destination 0 ('TV'). capability. If that is not set, then the ``EPERM`` error code is returned. - .. tabularcolumns:: |p{5.6cm}|p{0.9cm}|p{11.0cm}| .. _cec-tx-status: @@ -298,7 +298,6 @@ View On' messages from initiator 0xf ('Unregistered') to destination 0 ('TV'). - The transmit timed out. This should not normally happen and this indicates a driver problem. - .. tabularcolumns:: |p{5.6cm}|p{0.9cm}|p{11.0cm}| .. _cec-rx-status: @@ -335,7 +334,6 @@ View On' messages from initiator 0xf ('Unregistered') to destination 0 ('TV'). reply was interrupted. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/audio-bilingual-channel-select.rst b/Documentation/userspace-api/media/dvb/audio-bilingual-channel-select.rst index ba4f48b30d29..33b5363317f1 100644 --- a/Documentation/userspace-api/media/dvb/audio-bilingual-channel-select.rst +++ b/Documentation/userspace-api/media/dvb/audio-bilingual-channel-select.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_BILINGUAL_CHANNEL_SELECT: @@ -16,9 +17,9 @@ AUDIO_BILINGUAL_CHANNEL_SELECT Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_BILINGUAL_CHANNEL_SELECT, struct *audio_channel_select) - :name: AUDIO_BILINGUAL_CHANNEL_SELECT +.. c:macro:: AUDIO_BILINGUAL_CHANNEL_SELECT +``int ioctl(int fd, AUDIO_BILINGUAL_CHANNEL_SELECT, struct audio_channel_select *select)`` Arguments --------- @@ -39,7 +40,6 @@ Arguments - Select the output format of the audio (mono left/right, stereo). - Description ----------- @@ -50,7 +50,6 @@ for MPEG decoders controlled through V4L2. This ioctl call asks the Audio Device to select the requested channel for bilingual streams if possible. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-channel-select.rst b/Documentation/userspace-api/media/dvb/audio-channel-select.rst index ba83b639d955..74093df92a68 100644 --- a/Documentation/userspace-api/media/dvb/audio-channel-select.rst +++ b/Documentation/userspace-api/media/dvb/audio-channel-select.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_CHANNEL_SELECT: @@ -16,9 +17,9 @@ AUDIO_CHANNEL_SELECT Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct *audio_channel_select) - :name: AUDIO_CHANNEL_SELECT +.. c:macro:: AUDIO_CHANNEL_SELECT +``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -40,7 +40,6 @@ Arguments - Select the output format of the audio (mono left/right, stereo). - Description ----------- @@ -50,7 +49,6 @@ V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead. This ioctl call asks the Audio Device to select the requested channel if possible. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-clear-buffer.rst b/Documentation/userspace-api/media/dvb/audio-clear-buffer.rst index 7035a40c0e3a..a0ebb0278260 100644 --- a/Documentation/userspace-api/media/dvb/audio-clear-buffer.rst +++ b/Documentation/userspace-api/media/dvb/audio-clear-buffer.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_CLEAR_BUFFER: @@ -16,8 +17,9 @@ AUDIO_CLEAR_BUFFER Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_CLEAR_BUFFER) - :name: AUDIO_CLEAR_BUFFER +.. c:macro:: AUDIO_CLEAR_BUFFER + +``int ioctl(int fd, AUDIO_CLEAR_BUFFER)`` Arguments --------- @@ -26,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -39,7 +40,6 @@ Description This ioctl call asks the Audio Device to clear all software and hardware buffers of the audio decoder device. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-continue.rst b/Documentation/userspace-api/media/dvb/audio-continue.rst index c8d514a4eeb0..a2e9850f37f2 100644 --- a/Documentation/userspace-api/media/dvb/audio-continue.rst +++ b/Documentation/userspace-api/media/dvb/audio-continue.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_CONTINUE: @@ -16,9 +17,9 @@ AUDIO_CONTINUE Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_CONTINUE) - :name: AUDIO_CONTINUE +.. c:macro:: AUDIO_CONTINUE +``int ioctl(int fd, AUDIO_CONTINUE)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,7 +40,6 @@ Description This ioctl restarts the decoding and playing process previously paused with AUDIO_PAUSE command. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-fclose.rst b/Documentation/userspace-api/media/dvb/audio-fclose.rst index c968177b1e3f..77857d578e83 100644 --- a/Documentation/userspace-api/media/dvb/audio-fclose.rst +++ b/Documentation/userspace-api/media/dvb/audio-fclose.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _audio_fclose: @@ -17,8 +18,6 @@ Synopsis -------- .. c:function:: int close(int fd) - :name: dvb-audio-close - Arguments --------- @@ -27,20 +26,17 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd - File descriptor returned by a previous call to open(). - Description ----------- This system call closes a previously opened audio device. - Return Value ------------ @@ -48,7 +44,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EBADF`` diff --git a/Documentation/userspace-api/media/dvb/audio-fopen.rst b/Documentation/userspace-api/media/dvb/audio-fopen.rst index d34001e038dc..774daaab3bad 100644 --- a/Documentation/userspace-api/media/dvb/audio-fopen.rst +++ b/Documentation/userspace-api/media/dvb/audio-fopen.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _audio_fopen: @@ -17,8 +18,6 @@ Synopsis -------- .. c:function:: int open(const char *deviceName, int flags) - :name: dvb-audio-open - Arguments --------- @@ -27,7 +26,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - const char \*deviceName @@ -60,7 +58,6 @@ Arguments - - (blocking mode is the default) - Description ----------- @@ -78,7 +75,6 @@ fail, and an error code will be returned. If the Audio Device is opened in O_RDONLY mode, the only ioctl call that can be used is AUDIO_GET_STATUS. All other call will return with an error code. - Return Value ------------ @@ -88,7 +84,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``ENODEV`` diff --git a/Documentation/userspace-api/media/dvb/audio-fwrite.rst b/Documentation/userspace-api/media/dvb/audio-fwrite.rst index d17ec719e231..7b096ac2b6c4 100644 --- a/Documentation/userspace-api/media/dvb/audio-fwrite.rst +++ b/Documentation/userspace-api/media/dvb/audio-fwrite.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _audio_fwrite: @@ -17,8 +18,6 @@ Synopsis -------- .. c:function:: size_t write(int fd, const void *buf, size_t count) - :name: dvb-audio-write - Arguments --------- @@ -27,7 +26,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +44,6 @@ Arguments - Size of buf. - Description ----------- @@ -56,7 +53,6 @@ PES format. If O_NONBLOCK is not specified the function will block until buffer space is available. The amount of data to be transferred is implied by count. - Return Value ------------ @@ -64,7 +60,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EPERM`` diff --git a/Documentation/userspace-api/media/dvb/audio-get-capabilities.rst b/Documentation/userspace-api/media/dvb/audio-get-capabilities.rst index 33907e40e48c..6d9eb71dad17 100644 --- a/Documentation/userspace-api/media/dvb/audio-get-capabilities.rst +++ b/Documentation/userspace-api/media/dvb/audio-get-capabilities.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_GET_CAPABILITIES: @@ -16,9 +17,9 @@ AUDIO_GET_CAPABILITIES Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_GET_CAPABILITIES, unsigned int *cap) - :name: AUDIO_GET_CAPABILITIES +.. c:macro:: AUDIO_GET_CAPABILITIES +``int ioctl(int fd, AUDIO_GET_CAPABILITIES, unsigned int *cap)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -40,14 +40,12 @@ Arguments - Returns a bit array of supported sound formats. - Description ----------- This ioctl call asks the Audio Device to tell us about the decoding capabilities of the audio hardware. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-get-status.rst b/Documentation/userspace-api/media/dvb/audio-get-status.rst index 4213d076c6ed..7ae8db2e65e9 100644 --- a/Documentation/userspace-api/media/dvb/audio-get-status.rst +++ b/Documentation/userspace-api/media/dvb/audio-get-status.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_GET_STATUS: @@ -16,9 +17,9 @@ AUDIO_GET_STATUS Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_GET_STATUS, struct audio_status *status) - :name: AUDIO_GET_STATUS +.. c:macro:: AUDIO_GET_STATUS +``int ioctl(int fd, AUDIO_GET_STATUS, struct audio_status *status)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -40,14 +40,12 @@ Arguments - Returns the current state of Audio Device. - Description ----------- This ioctl call asks the Audio Device to return the current state of the Audio Device. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-pause.rst b/Documentation/userspace-api/media/dvb/audio-pause.rst index 2de74f1662cf..d37d1ddce4df 100644 --- a/Documentation/userspace-api/media/dvb/audio-pause.rst +++ b/Documentation/userspace-api/media/dvb/audio-pause.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_PAUSE: @@ -16,8 +17,9 @@ AUDIO_PAUSE Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_PAUSE) - :name: AUDIO_PAUSE +.. c:macro:: AUDIO_PAUSE + +``int ioctl(int fd, AUDIO_PAUSE)`` Arguments --------- @@ -26,14 +28,12 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd - File descriptor returned by a previous call to open(). - Description ----------- @@ -41,7 +41,6 @@ This ioctl call suspends the audio stream being played. Decoding and playing are paused. It is then possible to restart again decoding and playing process of the audio stream using AUDIO_CONTINUE command. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-play.rst b/Documentation/userspace-api/media/dvb/audio-play.rst index d4e4eacb8686..e591930b6ca7 100644 --- a/Documentation/userspace-api/media/dvb/audio-play.rst +++ b/Documentation/userspace-api/media/dvb/audio-play.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_PLAY: @@ -16,9 +17,9 @@ AUDIO_PLAY Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_PLAY) - :name: AUDIO_PLAY +.. c:macro:: AUDIO_PLAY +``int ioctl(int fd, AUDIO_PLAY)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,7 +40,6 @@ Description This ioctl call asks the Audio Device to start playing an audio stream from the selected source. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-select-source.rst b/Documentation/userspace-api/media/dvb/audio-select-source.rst index fb09f914cb8f..6a0c0f365eb1 100644 --- a/Documentation/userspace-api/media/dvb/audio-select-source.rst +++ b/Documentation/userspace-api/media/dvb/audio-select-source.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SELECT_SOURCE: @@ -16,9 +17,9 @@ AUDIO_SELECT_SOURCE Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source) - :name: AUDIO_SELECT_SOURCE +.. c:macro:: AUDIO_SELECT_SOURCE +``int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -40,7 +40,6 @@ Arguments - Indicates the source that shall be used for the Audio stream. - Description ----------- @@ -49,7 +48,6 @@ the input data. The possible sources are demux or memory. If AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device through the write command. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-av-sync.rst b/Documentation/userspace-api/media/dvb/audio-set-av-sync.rst index 5bcb9b1ed19d..85a8016bf025 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-av-sync.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-av-sync.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_AV_SYNC: @@ -16,9 +17,9 @@ AUDIO_SET_AV_SYNC Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SET_AV_SYNC, boolean state) - :name: AUDIO_SET_AV_SYNC +.. c:macro:: AUDIO_SET_AV_SYNC +``int ioctl(int fd, AUDIO_SET_AV_SYNC, boolean state)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -44,14 +44,12 @@ Arguments FALSE: AV-sync OFF - Description ----------- This ioctl call asks the Audio Device to turn ON or OFF A/V synchronization. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-bypass-mode.rst b/Documentation/userspace-api/media/dvb/audio-set-bypass-mode.rst index f24a18bbb567..ecac02f1b2fc 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-bypass-mode.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-bypass-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_BYPASS_MODE: @@ -16,8 +17,9 @@ AUDIO_SET_BYPASS_MODE Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SET_BYPASS_MODE, boolean mode) - :name: AUDIO_SET_BYPASS_MODE +.. c:macro:: AUDIO_SET_BYPASS_MODE + +``int ioctl(int fd, AUDIO_SET_BYPASS_MODE, boolean mode)`` Arguments --------- @@ -26,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -44,7 +45,6 @@ Arguments FALSE: Bypass is enabled - Description ----------- @@ -54,7 +54,6 @@ that can’t be handled by the Digital TV system shall be decoded. Dolby DigitalTM streams are automatically forwarded by the Digital TV subsystem if the hardware can handle it. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-id.rst b/Documentation/userspace-api/media/dvb/audio-set-id.rst index 0227e1071d0c..39ad846d412d 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-id.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-id.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_ID: @@ -16,8 +17,9 @@ AUDIO_SET_ID Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SET_ID, int id) - :name: AUDIO_SET_ID +.. c:macro:: AUDIO_SET_ID + +``int ioctl(int fd, AUDIO_SET_ID, int id)`` Arguments --------- @@ -26,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -39,7 +40,6 @@ Arguments - audio sub-stream id - Description ----------- @@ -51,7 +51,6 @@ other stream types. If the stream type is set the id just specifies the substream id of the audio stream and only the first 5 bits are recognized. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-mixer.rst b/Documentation/userspace-api/media/dvb/audio-set-mixer.rst index 58f18cf8240d..45dbdf4801e0 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-mixer.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-mixer.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_MIXER: @@ -16,8 +17,9 @@ AUDIO_SET_MIXER Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SET_MIXER, struct audio_mixer *mix) - :name: AUDIO_SET_MIXER +.. c:macro:: AUDIO_SET_MIXER + +``int ioctl(int fd, AUDIO_SET_MIXER, struct audio_mixer *mix)`` Arguments --------- @@ -26,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -39,13 +40,11 @@ Arguments - mixer settings. - Description ----------- This ioctl lets you adjust the mixer settings of the audio decoder. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-mute.rst b/Documentation/userspace-api/media/dvb/audio-set-mute.rst index 7ea7d8663e6b..987751f92967 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-mute.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-mute.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_MUTE: @@ -16,9 +17,9 @@ AUDIO_SET_MUTE Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_SET_MUTE, boolean state) - :name: AUDIO_SET_MUTE +.. c:macro:: AUDIO_SET_MUTE +``int ioctl(int fd, AUDIO_SET_MUTE, boolean state)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -44,7 +44,6 @@ Arguments FALSE: Audio Un-mute - Description ----------- @@ -55,7 +54,6 @@ V4L2 :ref:`VIDIOC_DECODER_CMD` with the This ioctl call asks the audio device to mute the stream that is currently being played. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/audio-set-streamtype.rst b/Documentation/userspace-api/media/dvb/audio-set-streamtype.rst index d9f4924afdbe..77d73c74882f 100644 --- a/Documentation/userspace-api/media/dvb/audio-set-streamtype.rst +++ b/Documentation/userspace-api/media/dvb/audio-set-streamtype.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_SET_STREAMTYPE: @@ -16,9 +17,9 @@ AUDIO_SET_STREAMTYPE Synopsis -------- -.. c:function:: int ioctl(fd, AUDIO_SET_STREAMTYPE, int type) - :name: AUDIO_SET_STREAMTYPE +.. c:macro:: AUDIO_SET_STREAMTYPE +``int ioctl(fd, AUDIO_SET_STREAMTYPE, int type)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - - int fd @@ -40,7 +40,6 @@ Arguments - stream type - Description ----------- @@ -48,7 +47,6 @@ This ioctl tells the driver which kind of audio stream to expect. This is useful if the stream offers several audio sub-streams like LPCM and AC3. - Return Value ------------ @@ -57,12 +55,10 @@ appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. - .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EINVAL`` diff --git a/Documentation/userspace-api/media/dvb/audio-stop.rst b/Documentation/userspace-api/media/dvb/audio-stop.rst index 3a2bc328626d..d77f786fd797 100644 --- a/Documentation/userspace-api/media/dvb/audio-stop.rst +++ b/Documentation/userspace-api/media/dvb/audio-stop.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.audio .. _AUDIO_STOP: @@ -16,8 +17,9 @@ AUDIO_STOP Synopsis -------- -.. c:function:: int ioctl(int fd, AUDIO_STOP) - :name: AUDIO_STOP +.. c:macro:: AUDIO_STOP + +``int ioctl(int fd, AUDIO_STOP)`` Arguments --------- @@ -26,21 +28,18 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd - File descriptor returned by a previous call to open(). - Description ----------- This ioctl call asks the Audio Device to stop playing the current stream. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/ca-fclose.rst b/Documentation/userspace-api/media/dvb/ca-fclose.rst index 00379ee7e9ed..27f217a350e7 100644 --- a/Documentation/userspace-api/media/dvb/ca-fclose.rst +++ b/Documentation/userspace-api/media/dvb/ca-fclose.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _ca_fclose: @@ -11,26 +12,22 @@ Name Digital TV CA close() - Synopsis -------- .. c:function:: int close(int fd) - :name: dvb-ca-close - Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. Description ----------- This system call closes a previously opened CA device. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/ca-fopen.rst b/Documentation/userspace-api/media/dvb/ca-fopen.rst index 9ca4bd1d8d5f..7f99908fff2c 100644 --- a/Documentation/userspace-api/media/dvb/ca-fopen.rst +++ b/Documentation/userspace-api/media/dvb/ca-fopen.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _ca_fopen: @@ -11,13 +12,10 @@ Name Digital TV CA open() - Synopsis -------- .. c:function:: int open(const char *name, int flags) - :name: dvb-ca-open - Arguments --------- @@ -45,7 +43,6 @@ Arguments - open in non-blocking mode (blocking mode is the default) - Description ----------- @@ -63,11 +60,9 @@ Only one user can open the CA Device in ``O_RDWR`` mode. All other attempts to open the device in this mode will fail, and an error code will be returned. - Return Value ------------ - On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set diff --git a/Documentation/userspace-api/media/dvb/ca-get-cap.rst b/Documentation/userspace-api/media/dvb/ca-get-cap.rst index 93742a5d941d..9b29513eeda8 100644 --- a/Documentation/userspace-api/media/dvb/ca-get-cap.rst +++ b/Documentation/userspace-api/media/dvb/ca-get-cap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_GET_CAP: @@ -11,19 +12,18 @@ Name CA_GET_CAP - Synopsis -------- -.. c:function:: int ioctl(fd, CA_GET_CAP, struct ca_caps *caps) - :name: CA_GET_CAP +.. c:macro:: CA_GET_CAP +``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``caps`` Pointer to struct :c:type:`ca_caps`. diff --git a/Documentation/userspace-api/media/dvb/ca-get-descr-info.rst b/Documentation/userspace-api/media/dvb/ca-get-descr-info.rst index be7dec053685..0cfdcdab33a8 100644 --- a/Documentation/userspace-api/media/dvb/ca-get-descr-info.rst +++ b/Documentation/userspace-api/media/dvb/ca-get-descr-info.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_GET_DESCR_INFO: @@ -11,18 +12,18 @@ Name CA_GET_DESCR_INFO - Synopsis -------- -.. c:function:: int ioctl(fd, CA_GET_DESCR_INFO, struct ca_descr_info *desc) - :name: CA_GET_DESCR_INFO +.. c:macro:: CA_GET_DESCR_INFO + +``int ioctl(fd, CA_GET_DESCR_INFO, struct ca_descr_info *desc)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``desc`` Pointer to struct :c:type:`ca_descr_info`. diff --git a/Documentation/userspace-api/media/dvb/ca-get-msg.rst b/Documentation/userspace-api/media/dvb/ca-get-msg.rst index e8802b4c5fa1..7c9a8d197343 100644 --- a/Documentation/userspace-api/media/dvb/ca-get-msg.rst +++ b/Documentation/userspace-api/media/dvb/ca-get-msg.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_GET_MSG: @@ -11,19 +12,18 @@ Name CA_GET_MSG - Synopsis -------- -.. c:function:: int ioctl(fd, CA_GET_MSG, struct ca_msg *msg) - :name: CA_GET_MSG +.. c:macro:: CA_GET_MSG +``int ioctl(fd, CA_GET_MSG, struct ca_msg *msg)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``msg`` Pointer to struct :c:type:`ca_msg`. @@ -38,11 +38,9 @@ Receives a message via a CI CA module. Please notice that, on most drivers, this is done by reading from the /dev/adapter?/ca? device node. - Return Value ------------ - On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set diff --git a/Documentation/userspace-api/media/dvb/ca-get-slot-info.rst b/Documentation/userspace-api/media/dvb/ca-get-slot-info.rst index d283df335914..582444af7003 100644 --- a/Documentation/userspace-api/media/dvb/ca-get-slot-info.rst +++ b/Documentation/userspace-api/media/dvb/ca-get-slot-info.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_GET_SLOT_INFO: @@ -11,19 +12,18 @@ Name CA_GET_SLOT_INFO - Synopsis -------- -.. c:function:: int ioctl(fd, CA_GET_SLOT_INFO, struct ca_slot_info *info) - :name: CA_GET_SLOT_INFO +.. c:macro:: CA_GET_SLOT_INFO +``int ioctl(fd, CA_GET_SLOT_INFO, struct ca_slot_info *info)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <cec-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``info`` Pointer to struct :c:type:`ca_slot_info`. @@ -34,7 +34,6 @@ Description Returns information about a CA slot identified by :c:type:`ca_slot_info`.slot_num. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/ca-reset.rst b/Documentation/userspace-api/media/dvb/ca-reset.rst index fc49ef2ffcdb..b01ca48f0b50 100644 --- a/Documentation/userspace-api/media/dvb/ca-reset.rst +++ b/Documentation/userspace-api/media/dvb/ca-reset.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_RESET: @@ -11,19 +12,18 @@ Name CA_RESET - Synopsis -------- -.. c:function:: int ioctl(fd, CA_RESET) - :name: CA_RESET +.. c:macro:: CA_RESET +``int ioctl(fd, CA_RESET)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <cec-open>`. + File descriptor returned by a previous call to :c:func:`open()`. Description ----------- @@ -31,7 +31,6 @@ Description Puts the Conditional Access hardware on its initial state. It should be called before start using the CA hardware. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/ca-send-msg.rst b/Documentation/userspace-api/media/dvb/ca-send-msg.rst index cf423fe881b8..7dd2ab4ef675 100644 --- a/Documentation/userspace-api/media/dvb/ca-send-msg.rst +++ b/Documentation/userspace-api/media/dvb/ca-send-msg.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_SEND_MSG: @@ -11,24 +12,22 @@ Name CA_SEND_MSG - Synopsis -------- -.. c:function:: int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg) - :name: CA_SEND_MSG +.. c:macro:: CA_SEND_MSG +``int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <cec-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``msg`` Pointer to struct :c:type:`ca_msg`. - Description ----------- diff --git a/Documentation/userspace-api/media/dvb/ca-set-descr.rst b/Documentation/userspace-api/media/dvb/ca-set-descr.rst index a5c628a4d3cd..a740af34c872 100644 --- a/Documentation/userspace-api/media/dvb/ca-set-descr.rst +++ b/Documentation/userspace-api/media/dvb/ca-set-descr.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca .. _CA_SET_DESCR: @@ -11,19 +12,18 @@ Name CA_SET_DESCR - Synopsis -------- -.. c:function:: int ioctl(fd, CA_SET_DESCR, struct ca_descr *desc) - :name: CA_SET_DESCR +.. c:macro:: CA_SET_DESCR +``int ioctl(fd, CA_SET_DESCR, struct ca_descr *desc)`` Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <cec-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``msg`` Pointer to struct :c:type:`ca_descr`. diff --git a/Documentation/userspace-api/media/dvb/dmx-add-pid.rst b/Documentation/userspace-api/media/dvb/dmx-add-pid.rst index 3f08ecd88b0c..ea0c7dd91e05 100644 --- a/Documentation/userspace-api/media/dvb/dmx-add-pid.rst +++ b/Documentation/userspace-api/media/dvb/dmx-add-pid.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_ADD_PID: @@ -11,24 +12,22 @@ Name DMX_ADD_PID - Synopsis -------- -.. c:function:: int ioctl(fd, DMX_ADD_PID, __u16 *pid) - :name: DMX_ADD_PID +.. c:macro:: DMX_ADD_PID +``int ioctl(fd, DMX_ADD_PID, __u16 *pid)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``pid`` PID number to be filtered. - Description ----------- @@ -36,7 +35,6 @@ This ioctl call allows to add multiple PIDs to a transport stream filter previously set up with :ref:`DMX_SET_PES_FILTER` and output equal to :c:type:`DMX_OUT_TSDEMUX_TAP <dmx_output>`. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-expbuf.rst b/Documentation/userspace-api/media/dvb/dmx-expbuf.rst index cde2b78a35fa..5cdc2035e3b7 100644 --- a/Documentation/userspace-api/media/dvb/dmx-expbuf.rst +++ b/Documentation/userspace-api/media/dvb/dmx-expbuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_EXPBUF: @@ -13,24 +14,22 @@ DMX_EXPBUF - Export a buffer as a DMABUF file descriptor. .. warning:: this API is still experimental - Synopsis ======== -.. c:function:: int ioctl( int fd, DMX_EXPBUF, struct dmx_exportbuffer *argp ) - :name: DMX_EXPBUF +.. c:macro:: DMX_EXPBUF +``int ioctl(int fd, DMX_EXPBUF, struct dmx_exportbuffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <dmx_fopen>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`dmx_exportbuffer`. - Description =========== @@ -54,11 +53,9 @@ driver, on success. This is a DMABUF file descriptor. The application may pass it to other DMABUF-aware devices. It is recommended to close a DMABUF file when it is no longer used to allow the associated memory to be reclaimed. - Examples ======== - .. code-block:: c int buffer_export(int v4lfd, enum dmx_buf_type bt, int index, int *dmafd) diff --git a/Documentation/userspace-api/media/dvb/dmx-fclose.rst b/Documentation/userspace-api/media/dvb/dmx-fclose.rst index af036792f13d..719ac1d4f686 100644 --- a/Documentation/userspace-api/media/dvb/dmx-fclose.rst +++ b/Documentation/userspace-api/media/dvb/dmx-fclose.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx_fclose: @@ -11,27 +12,23 @@ Name Digital TV demux close() - Synopsis -------- .. c:function:: int close(int fd) - :name: dvb-dmx-close - Arguments --------- ``fd`` File descriptor returned by a previous call to - :c:func:`open() <dvb-dmx-open>`. + :c:func:`open()`. Description ----------- This system call deactivates and deallocates a filter that was -previously allocated via the :c:func:`open() <dvb-dmx-open>` call. - +previously allocated via the :c:func:`open()` call. Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-fopen.rst b/Documentation/userspace-api/media/dvb/dmx-fopen.rst index 7117c9bc4325..8f0a2b831d4a 100644 --- a/Documentation/userspace-api/media/dvb/dmx-fopen.rst +++ b/Documentation/userspace-api/media/dvb/dmx-fopen.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx_fopen: @@ -11,12 +12,10 @@ Name Digital TV demux open() - Synopsis -------- .. c:function:: int open(const char *deviceName, int flags) - :name: dvb-dmx-open Arguments --------- @@ -47,7 +46,6 @@ Arguments - open in non-blocking mode (blocking mode is the default) - Description ----------- @@ -68,7 +66,6 @@ affect the semantics of the ``open()`` call itself. A device opened in blocking mode can later be put into non-blocking mode (and vice versa) using the ``F_SETFL`` command of the fcntl system call. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-fread.rst b/Documentation/userspace-api/media/dvb/dmx-fread.rst index c708a240abae..78e9daef595a 100644 --- a/Documentation/userspace-api/media/dvb/dmx-fread.rst +++ b/Documentation/userspace-api/media/dvb/dmx-fread.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx_fread: @@ -11,18 +12,16 @@ Name Digital TV demux read() - Synopsis -------- .. c:function:: size_t read(int fd, void *buf, size_t count) - :name: dvb-dmx-read Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``buf`` Buffer to be filled @@ -44,7 +43,6 @@ to be transferred is implied by count. :c:type:`DMX_CHECK_CRC <dmx_sct_filter_params>` flag set, data that fails on CRC check will be silently ignored. - Return Value ------------ @@ -75,6 +73,5 @@ appropriately. - The driver failed to write to the callers buffer due to an invalid \*buf pointer. - The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/dmx-fwrite.rst b/Documentation/userspace-api/media/dvb/dmx-fwrite.rst index bef565a35c59..e11ee0ba84a5 100644 --- a/Documentation/userspace-api/media/dvb/dmx-fwrite.rst +++ b/Documentation/userspace-api/media/dvb/dmx-fwrite.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx_fwrite: @@ -11,18 +12,16 @@ Name Digital TV demux write() - Synopsis -------- .. c:function:: ssize_t write(int fd, const void *buf, size_t count) - :name: dvb-dmx-write Arguments --------- ``fd`` - File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`. + File descriptor returned by a previous call to :c:func:`open()`. ``buf`` Buffer with data to be written @@ -40,7 +39,6 @@ digitally recorded Transport Stream. Matching filters have to be defined in the corresponding physical demux device, ``/dev/dvb/adapter?/demux?``. The amount of data to be transferred is implied by count. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-get-pes-pids.rst b/Documentation/userspace-api/media/dvb/dmx-get-pes-pids.rst index e92d94d93b18..4f5f0505c0d5 100644 --- a/Documentation/userspace-api/media/dvb/dmx-get-pes-pids.rst +++ b/Documentation/userspace-api/media/dvb/dmx-get-pes-pids.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_GET_PES_PIDS: @@ -11,23 +12,22 @@ Name DMX_GET_PES_PIDS - Synopsis -------- -.. c:function:: int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5]) - :name: DMX_GET_PES_PIDS +.. c:macro:: DMX_GET_PES_PIDS + +``int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5])`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``pids`` Array used to store 5 Program IDs. - Description ----------- @@ -45,13 +45,11 @@ pids[DMX_PES_SUBTITLE] 3 first subtitle PID pids[DMX_PES_PCR] 4 first Program Clock Reference PID ======================= ======== ======================================= - .. note:: A value equal to 0xffff means that the PID was not filled by the Kernel. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-get-stc.rst b/Documentation/userspace-api/media/dvb/dmx-get-stc.rst index 3762efcf1355..6ada74f6eb18 100644 --- a/Documentation/userspace-api/media/dvb/dmx-get-stc.rst +++ b/Documentation/userspace-api/media/dvb/dmx-get-stc.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_GET_STC: @@ -11,23 +12,22 @@ Name DMX_GET_STC - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_GET_STC, struct dmx_stc *stc) - :name: DMX_GET_STC +.. c:macro:: DMX_GET_STC + +``int ioctl(int fd, DMX_GET_STC, struct dmx_stc *stc)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``stc`` Pointer to :c:type:`dmx_stc` where the stc data is to be stored. - Description ----------- @@ -39,7 +39,6 @@ The result is returned in form of a ratio with a 64 bit numerator and a 32 bit denominator, so the real 90kHz STC value is ``stc->stc / stc->base``. - Return Value ------------ @@ -61,6 +60,5 @@ appropriately. - Invalid stc number. - The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/dmx-mmap.rst b/Documentation/userspace-api/media/dvb/dmx-mmap.rst index efa9b04be700..8826c6226fb0 100644 --- a/Documentation/userspace-api/media/dvb/dmx-mmap.rst +++ b/Documentation/userspace-api/media/dvb/dmx-mmap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx-mmap: @@ -21,9 +22,7 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: void *mmap( void *start, size_t length, int prot, int flags, int fd, off_t offset ) - :name: dmx-mmap Arguments ========= @@ -54,7 +53,7 @@ Arguments ``MAP_FIXED`` requests that the driver selects no other address than the one specified. If the specified address cannot be used, - :ref:`mmap() <dmx-mmap>` will fail. If ``MAP_FIXED`` is specified, + :c:func:`mmap()` will fail. If ``MAP_FIXED`` is specified, ``start`` must be a multiple of the pagesize. Use of this option is discouraged. @@ -69,17 +68,16 @@ Arguments flags. ``fd`` - File descriptor returned by :ref:`open() <dmx_fopen>`. + File descriptor returned by :c:func:`open()`. ``offset`` Offset of the buffer in device memory, as returned by :ref:`DMX_QUERYBUF` ioctl. - Description =========== -The :ref:`mmap() <dmx-mmap>` function asks to map ``length`` bytes starting at +The :c:func:`mmap()` function asks to map ``length`` bytes starting at ``offset`` in the memory of the device specified by ``fd`` into the application address space, preferably at address ``start``. This latter address is a hint only, and is usually specified as 0. @@ -88,13 +86,12 @@ Suitable length and offset parameters are queried with the :ref:`DMX_QUERYBUF` ioctl. Buffers must be allocated with the :ref:`DMX_REQBUFS` ioctl before they can be queried. -To unmap buffers the :ref:`munmap() <dmx-munmap>` function is used. - +To unmap buffers the :c:func:`munmap()` function is used. Return Value ============ -On success :ref:`mmap() <dmx-mmap>` returns a pointer to the mapped buffer. On +On success :c:func:`mmap()` returns a pointer to the mapped buffer. On error ``MAP_FAILED`` (-1) is returned, and the ``errno`` variable is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/dvb/dmx-munmap.rst b/Documentation/userspace-api/media/dvb/dmx-munmap.rst index 308a9593919c..66bbc11e5c40 100644 --- a/Documentation/userspace-api/media/dvb/dmx-munmap.rst +++ b/Documentation/userspace-api/media/dvb/dmx-munmap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _dmx-munmap: @@ -13,7 +14,6 @@ dmx-munmap - Unmap device memory .. warning:: This API is still experimental. - Synopsis ======== @@ -22,33 +22,29 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: int munmap( void *start, size_t length ) - :name: dmx-munmap Arguments ========= ``start`` Address of the mapped buffer as returned by the - :ref:`mmap() <dmx-mmap>` function. + :c:func:`mmap()` function. ``length`` Length of the mapped buffer. This must be the same value as given to - :ref:`mmap() <dmx-mmap>`. - + :c:func:`mmap()`. Description =========== -Unmaps a previously with the :ref:`mmap() <dmx-mmap>` function mapped +Unmaps a previously with the :c:func:`mmap()` function mapped buffer and frees it, if possible. - Return Value ============ -On success :ref:`munmap() <dmx-munmap>` returns 0, on failure -1 and the +On success :c:func:`munmap()` returns 0, on failure -1 and the ``errno`` variable is set appropriately: EINVAL diff --git a/Documentation/userspace-api/media/dvb/dmx-qbuf.rst b/Documentation/userspace-api/media/dvb/dmx-qbuf.rst index fcb1c55dd49a..17e70143c1b0 100644 --- a/Documentation/userspace-api/media/dvb/dmx-qbuf.rst +++ b/Documentation/userspace-api/media/dvb/dmx-qbuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_QBUF: @@ -13,27 +14,26 @@ DMX_QBUF - DMX_DQBUF - Exchange a buffer with the driver .. warning:: this API is still experimental - Synopsis ======== -.. c:function:: int ioctl( int fd, DMX_QBUF, struct dmx_buffer *argp ) - :name: DMX_QBUF +.. c:macro:: DMX_QBUF + +``int ioctl(int fd, DMX_QBUF, struct dmx_buffer *argp)`` -.. c:function:: int ioctl( int fd, DMX_DQBUF, struct dmx_buffer *argp ) - :name: DMX_DQBUF +.. c:macro:: DMX_DQBUF +``int ioctl(int fd, DMX_DQBUF, struct dmx_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <dmx_fopen>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`dmx_buffer`. - Description =========== @@ -60,13 +60,12 @@ the driver fills the remaining fields or returns an error code. By default ``DMX_DQBUF`` blocks when no buffer is in the outgoing queue. When the ``O_NONBLOCK`` flag was given to the -:ref:`open() <dmx_fopen>` function, ``DMX_DQBUF`` returns +:c:func:`open()` function, ``DMX_DQBUF`` returns immediately with an ``EAGAIN`` error code when no buffer is available. The struct :c:type:`dmx_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/dmx-querybuf.rst b/Documentation/userspace-api/media/dvb/dmx-querybuf.rst index df13e2b053c9..08ee9853d6b4 100644 --- a/Documentation/userspace-api/media/dvb/dmx-querybuf.rst +++ b/Documentation/userspace-api/media/dvb/dmx-querybuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_QUERYBUF: @@ -13,24 +14,22 @@ DMX_QUERYBUF - Query the status of a buffer .. warning:: this API is still experimental - Synopsis ======== -.. c:function:: int ioctl( int fd, DMX_QUERYBUF, struct dvb_buffer *argp ) - :name: DMX_QUERYBUF +.. c:macro:: DMX_QUERYBUF +``int ioctl(int fd, DMX_QUERYBUF, struct dvb_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <dmx_fopen>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`dvb_buffer`. - Description =========== diff --git a/Documentation/userspace-api/media/dvb/dmx-remove-pid.rst b/Documentation/userspace-api/media/dvb/dmx-remove-pid.rst index ce408d0d7c77..f75b33e5e49a 100644 --- a/Documentation/userspace-api/media/dvb/dmx-remove-pid.rst +++ b/Documentation/userspace-api/media/dvb/dmx-remove-pid.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_REMOVE_PID: @@ -11,24 +12,22 @@ Name DMX_REMOVE_PID - Synopsis -------- -.. c:function:: int ioctl(fd, DMX_REMOVE_PID, __u16 *pid) - :name: DMX_REMOVE_PID +.. c:macro:: DMX_REMOVE_PID +``int ioctl(fd, DMX_REMOVE_PID, __u16 *pid)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``pid`` PID of the PES filter to be removed. - Description ----------- @@ -37,7 +36,6 @@ transport stream filter, e. g. a filter previously set up with output equal to :c:type:`DMX_OUT_TSDEMUX_TAP <dmx_output>`, created via either :ref:`DMX_SET_PES_FILTER` or :ref:`DMX_ADD_PID`. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/dmx-reqbufs.rst b/Documentation/userspace-api/media/dvb/dmx-reqbufs.rst index 433aed632f92..d2bb1909ec98 100644 --- a/Documentation/userspace-api/media/dvb/dmx-reqbufs.rst +++ b/Documentation/userspace-api/media/dvb/dmx-reqbufs.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_REQBUFS: @@ -13,19 +14,18 @@ DMX_REQBUFS - Initiate Memory Mapping and/or DMA buffer I/O .. warning:: this API is still experimental - Synopsis ======== -.. c:function:: int ioctl( int fd, DMX_REQBUFS, struct dmx_requestbuffers *argp ) - :name: DMX_REQBUFS +.. c:macro:: DMX_REQBUFS +``int ioctl(int fd, DMX_REQBUFS, struct dmx_requestbuffers *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <dmx_fopen>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`dmx_requestbuffers`. @@ -64,7 +64,6 @@ buffers, however this cannot succeed when any buffers are still mapped. A ``count`` value of zero frees all buffers, after aborting or finishing any DMA in progress. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst b/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst index e803cbab220b..13ce4092c2d2 100644 --- a/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst +++ b/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_SET_BUFFER_SIZE: @@ -11,19 +12,18 @@ Name DMX_SET_BUFFER_SIZE - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_SET_BUFFER_SIZE, unsigned long size) - :name: DMX_SET_BUFFER_SIZE +.. c:macro:: DMX_SET_BUFFER_SIZE +``int ioctl(int fd, DMX_SET_BUFFER_SIZE, unsigned long size)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``size`` Unsigned long size @@ -36,11 +36,9 @@ filtered data. The default size is two maximum sized sections, i.e. if this function is not called a buffer size of ``2 * 4096`` bytes will be used. - Return Value ------------ - On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set diff --git a/Documentation/userspace-api/media/dvb/dmx-set-filter.rst b/Documentation/userspace-api/media/dvb/dmx-set-filter.rst index 4cd3db512b4e..f43455b7adae 100644 --- a/Documentation/userspace-api/media/dvb/dmx-set-filter.rst +++ b/Documentation/userspace-api/media/dvb/dmx-set-filter.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_SET_FILTER: @@ -11,24 +12,23 @@ Name DMX_SET_FILTER - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_SET_FILTER, struct dmx_sct_filter_params *params) - :name: DMX_SET_FILTER +.. c:macro:: DMX_SET_FILTER + +``int ioctl(int fd, DMX_SET_FILTER, struct dmx_sct_filter_params *params)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``params`` Pointer to structure containing filter parameters. - Description ----------- @@ -43,11 +43,9 @@ operation should be started immediately (without waiting for a :ref:`DMX_START` ioctl call). If a filter was previously set-up, this filter will be canceled, and the receive buffer will be flushed. - Return Value ------------ - On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set diff --git a/Documentation/userspace-api/media/dvb/dmx-set-pes-filter.rst b/Documentation/userspace-api/media/dvb/dmx-set-pes-filter.rst index 8e54fd2636ed..5bb682e4a88f 100644 --- a/Documentation/userspace-api/media/dvb/dmx-set-pes-filter.rst +++ b/Documentation/userspace-api/media/dvb/dmx-set-pes-filter.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_SET_PES_FILTER: @@ -11,25 +12,22 @@ Name DMX_SET_PES_FILTER - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_SET_PES_FILTER, struct dmx_pes_filter_params *params) - :name: DMX_SET_PES_FILTER +.. c:macro:: DMX_SET_PES_FILTER +``int ioctl(int fd, DMX_SET_PES_FILTER, struct dmx_pes_filter_params *params)`` Arguments --------- - ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. ``params`` Pointer to structure containing filter parameters. - Description ----------- @@ -38,7 +36,6 @@ provided. By a PES filter is meant a filter that is based just on the packet identifier (PID), i.e. no PES header or payload filtering capability is supported. - Return Value ------------ @@ -54,7 +51,6 @@ appropriately. :stub-columns: 0 :widths: 1 16 - - .. row 1 - ``EBUSY`` @@ -64,6 +60,5 @@ appropriately. Make sure that these filters are stopped before starting this filter. - The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/dmx-start.rst b/Documentation/userspace-api/media/dvb/dmx-start.rst index 6f1413e13936..aedccf952a14 100644 --- a/Documentation/userspace-api/media/dvb/dmx-start.rst +++ b/Documentation/userspace-api/media/dvb/dmx-start.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_START: @@ -11,19 +12,18 @@ Name DMX_START - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_START) - :name: DMX_START +.. c:macro:: DMX_START +``int ioctl(int fd, DMX_START)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. Description ----------- @@ -31,7 +31,6 @@ Description This ioctl call is used to start the actual filtering operation defined via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER`. - Return Value ------------ @@ -46,7 +45,6 @@ appropriately. :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EINVAL`` @@ -63,6 +61,5 @@ appropriately. Make sure that these filters are stopped before starting this filter. - The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/dmx-stop.rst b/Documentation/userspace-api/media/dvb/dmx-stop.rst index cbc3956fd71d..8661e6772104 100644 --- a/Documentation/userspace-api/media/dvb/dmx-stop.rst +++ b/Documentation/userspace-api/media/dvb/dmx-stop.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.dmx .. _DMX_STOP: @@ -11,19 +12,18 @@ Name DMX_STOP - Synopsis -------- -.. c:function:: int ioctl( int fd, DMX_STOP) - :name: DMX_STOP +.. c:macro:: DMX_STOP +``int ioctl(int fd, DMX_STOP)`` Arguments --------- ``fd`` - File descriptor returned by :c:func:`open() <dvb-dmx-open>`. + File descriptor returned by :c:func:`open()`. Description ----------- @@ -32,7 +32,6 @@ This ioctl call is used to stop the actual filtering operation defined via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` and started via the :ref:`DMX_START` command. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst b/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst index 115cced97e66..d9be817f0390 100644 --- a/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst +++ b/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_DISEQC_RECV_SLAVE_REPLY: @@ -11,24 +12,22 @@ Name FE_DISEQC_RECV_SLAVE_REPLY - Receives reply from a DiSEqC 2.0 command - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_DISEQC_RECV_SLAVE_REPLY, struct dvb_diseqc_slave_reply *argp ) - :name: FE_DISEQC_RECV_SLAVE_REPLY +.. c:macro:: FE_DISEQC_RECV_SLAVE_REPLY +``int ioctl(int fd, FE_DISEQC_RECV_SLAVE_REPLY, struct dvb_diseqc_slave_reply *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``argp`` pointer to struct :c:type:`dvb_diseqc_slave_reply`. - Description =========== diff --git a/Documentation/userspace-api/media/dvb/fe-diseqc-reset-overload.rst b/Documentation/userspace-api/media/dvb/fe-diseqc-reset-overload.rst index 5ffc34a6496e..d36f7d1157c6 100644 --- a/Documentation/userspace-api/media/dvb/fe-diseqc-reset-overload.rst +++ b/Documentation/userspace-api/media/dvb/fe-diseqc-reset-overload.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_DISEQC_RESET_OVERLOAD: @@ -11,19 +12,18 @@ Name FE_DISEQC_RESET_OVERLOAD - Restores the power to the antenna subsystem, if it was powered off due - to power overload. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_DISEQC_RESET_OVERLOAD, NULL ) - :name: FE_DISEQC_RESET_OVERLOAD +.. c:macro:: FE_DISEQC_RESET_OVERLOAD +``int ioctl(int fd, FE_DISEQC_RESET_OVERLOAD, NULL)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. Description =========== @@ -33,7 +33,6 @@ this ioctl call restores the power to the bus. The call requires read/write access to the device. This call has no effect if the device is manually powered off. Not all Digital TV adapters support this ioctl. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-diseqc-send-burst.rst b/Documentation/userspace-api/media/dvb/fe-diseqc-send-burst.rst index fd59afe814f3..8fb73ee29951 100644 --- a/Documentation/userspace-api/media/dvb/fe-diseqc-send-burst.rst +++ b/Documentation/userspace-api/media/dvb/fe-diseqc-send-burst.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_DISEQC_SEND_BURST: @@ -11,24 +12,22 @@ Name FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone ) - :name: FE_DISEQC_SEND_BURST +.. c:macro:: FE_DISEQC_SEND_BURST +``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``tone`` An integer enumered value described at :c:type:`fe_sec_mini_cmd`. - Description =========== @@ -39,7 +38,6 @@ read/write permissions. It provides support for what's specified at `Digital Satellite Equipment Control (DiSEqC) - Simple "ToneBurst" Detection Circuit specification. <http://www.eutelsat.com/files/contributed/satellites/pdf/Diseqc/associated%20docs/simple_tone_burst_detec.pdf>`__ - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-diseqc-send-master-cmd.rst b/Documentation/userspace-api/media/dvb/fe-diseqc-send-master-cmd.rst index faa2a8364e10..c97029def2ee 100644 --- a/Documentation/userspace-api/media/dvb/fe-diseqc-send-master-cmd.rst +++ b/Documentation/userspace-api/media/dvb/fe-diseqc-send-master-cmd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_DISEQC_SEND_MASTER_CMD: @@ -11,25 +12,23 @@ Name FE_DISEQC_SEND_MASTER_CMD - Sends a DiSEqC command - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_DISEQC_SEND_MASTER_CMD, struct dvb_diseqc_master_cmd *argp ) - :name: FE_DISEQC_SEND_MASTER_CMD +.. c:macro:: FE_DISEQC_SEND_MASTER_CMD +``int ioctl(int fd, FE_DISEQC_SEND_MASTER_CMD, struct dvb_diseqc_master_cmd *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``argp`` pointer to struct :c:type:`dvb_diseqc_master_cmd` - Description =========== diff --git a/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst b/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst index 60d69bb6da71..d1dba74c55a9 100644 --- a/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst +++ b/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_DISHNETWORK_SEND_LEGACY_CMD: @@ -11,24 +12,22 @@ Name FE_DISHNETWORK_SEND_LEGACY_CMD - Synopsis ======== -.. c:function:: int ioctl(int fd, FE_DISHNETWORK_SEND_LEGACY_CMD, unsigned long cmd) - :name: FE_DISHNETWORK_SEND_LEGACY_CMD +.. c:macro:: FE_DISHNETWORK_SEND_LEGACY_CMD +``int ioctl(int fd, FE_DISHNETWORK_SEND_LEGACY_CMD, unsigned long cmd)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``cmd`` Sends the specified raw cmd to the dish via DISEqC. - Description =========== @@ -42,7 +41,6 @@ frontend, for Dish Network legacy switches. As support for this ioctl were added in 2004, this means that such dishes were already legacy in 2004. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-enable-high-lnb-voltage.rst b/Documentation/userspace-api/media/dvb/fe-enable-high-lnb-voltage.rst index df0cc91384d9..40d7320f82f7 100644 --- a/Documentation/userspace-api/media/dvb/fe-enable-high-lnb-voltage.rst +++ b/Documentation/userspace-api/media/dvb/fe-enable-high-lnb-voltage.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_ENABLE_HIGH_LNB_VOLTAGE: @@ -11,19 +12,18 @@ Name FE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high ) - :name: FE_ENABLE_HIGH_LNB_VOLTAGE +.. c:macro:: FE_ENABLE_HIGH_LNB_VOLTAGE +``int ioctl(int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``high`` Valid flags: @@ -33,7 +33,6 @@ Arguments - >0 - enables slightly higher voltages instead of 13/18V, in order to compensate for long antenna cables. - Description =========== @@ -41,7 +40,6 @@ Select output DC level between normal LNBf voltages or higher LNBf voltages between 0 (normal) or a value grater than 0 for higher voltages. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-get-event.rst b/Documentation/userspace-api/media/dvb/fe-get-event.rst index 723bb3a4a630..f63029eca90e 100644 --- a/Documentation/userspace-api/media/dvb/fe-get-event.rst +++ b/Documentation/userspace-api/media/dvb/fe-get-event.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_GET_EVENT: @@ -13,24 +14,22 @@ FE_GET_EVENT .. attention:: This ioctl is deprecated. - Synopsis ======== -.. c:function:: int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev) - :name: FE_GET_EVENT +.. c:macro:: FE_GET_EVENT +``int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``ev`` Points to the location where the event, if any, is to be stored. - Description =========== @@ -40,7 +39,6 @@ or non-blocking mode. In the latter case, the call fails immediately with errno set to ``EWOULDBLOCK``. In the former case, the call blocks until an event becomes available. - Return Value ============ @@ -49,12 +47,10 @@ On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set appropriately. - .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EWOULDBLOCK`` diff --git a/Documentation/userspace-api/media/dvb/fe-get-frontend.rst b/Documentation/userspace-api/media/dvb/fe-get-frontend.rst index 2bfc1f1a3dc5..40700533e7e7 100644 --- a/Documentation/userspace-api/media/dvb/fe-get-frontend.rst +++ b/Documentation/userspace-api/media/dvb/fe-get-frontend.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_GET_FRONTEND: @@ -13,32 +14,28 @@ FE_GET_FRONTEND .. attention:: This ioctl is deprecated. - Synopsis ======== -.. c:function:: int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p) - :name: FE_GET_FRONTEND +.. c:macro:: FE_GET_FRONTEND +``int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. - + File descriptor returned by :c:func:`open()`. ``p`` Points to parameters for tuning operation. - Description =========== This ioctl call queries the currently effective frontend parameters. For this command, read-only access to the device is sufficient. - Return Value ============ @@ -51,7 +48,6 @@ appropriately. :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EINVAL`` diff --git a/Documentation/userspace-api/media/dvb/fe-get-info.rst b/Documentation/userspace-api/media/dvb/fe-get-info.rst index eba115c03471..2e5f0209846f 100644 --- a/Documentation/userspace-api/media/dvb/fe-get-info.rst +++ b/Documentation/userspace-api/media/dvb/fe-get-info.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_GET_INFO: @@ -12,24 +13,22 @@ Name FE_GET_INFO - Query Digital TV frontend capabilities and returns information about the - front-end. This call only requires read-only access to the device. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_GET_INFO, struct dvb_frontend_info *argp ) - :name: FE_GET_INFO +.. c:macro:: FE_GET_INFO +``int ioctl(int fd, FE_GET_INFO, struct dvb_frontend_info *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``argp`` pointer to struct :c:type:`dvb_frontend_info` - Description =========== @@ -40,7 +39,6 @@ takes a pointer to dvb_frontend_info which is filled by the driver. When the driver is not compatible with this specification the ioctl returns an error. - frontend capabilities ===================== @@ -49,7 +47,6 @@ supported only on some specific frontend types. The frontend capabilities are described at :c:type:`fe_caps`. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-get-property.rst b/Documentation/userspace-api/media/dvb/fe-get-property.rst index 10e1db172d8a..29363dc4a0c3 100644 --- a/Documentation/userspace-api/media/dvb/fe-get-property.rst +++ b/Documentation/userspace-api/media/dvb/fe-get-property.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_GET_PROPERTY: @@ -11,27 +12,26 @@ Name FE_SET_PROPERTY - FE_GET_PROPERTY - FE_SET_PROPERTY sets one or more frontend properties. - FE_GET_PROPERTY returns one or more frontend properties. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_GET_PROPERTY, struct dtv_properties *argp ) - :name: FE_GET_PROPERTY +.. c:macro:: FE_GET_PROPERTY + +``int ioctl(int fd, FE_GET_PROPERTY, struct dtv_properties *argp)`` -.. c:function:: int ioctl( int fd, FE_SET_PROPERTY, struct dtv_properties *argp ) - :name: FE_SET_PROPERTY +.. c:macro:: FE_SET_PROPERTY +``int ioctl(int fd, FE_SET_PROPERTY, struct dtv_properties *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`dtv_properties`. - Description =========== @@ -63,7 +63,6 @@ depends on the delivery system and on the device: - This call only requires read-only access to the device. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-read-ber.rst b/Documentation/userspace-api/media/dvb/fe-read-ber.rst index 2200eb1d06f9..f33f1dd20501 100644 --- a/Documentation/userspace-api/media/dvb/fe-read-ber.rst +++ b/Documentation/userspace-api/media/dvb/fe-read-ber.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_READ_BER: @@ -16,20 +17,19 @@ FE_READ_BER Synopsis ======== -.. c:function:: int ioctl(int fd, FE_READ_BER, uint32_t *ber) - :name: FE_READ_BER +.. c:macro:: FE_READ_BER +``int ioctl(int fd, FE_READ_BER, uint32_t *ber)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``ber`` The bit error rate is stored into \*ber. - Description =========== @@ -37,7 +37,6 @@ This ioctl call returns the bit error rate for the signal currently received/demodulated by the front-end. For this command, read-only access to the device is sufficient. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-read-signal-strength.rst b/Documentation/userspace-api/media/dvb/fe-read-signal-strength.rst index 4832efad2a2e..2b7d06145cb1 100644 --- a/Documentation/userspace-api/media/dvb/fe-read-signal-strength.rst +++ b/Documentation/userspace-api/media/dvb/fe-read-signal-strength.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_READ_SIGNAL_STRENGTH: @@ -16,20 +17,19 @@ FE_READ_SIGNAL_STRENGTH Synopsis ======== -.. c:function:: int ioctl( int fd, FE_READ_SIGNAL_STRENGTH, uint16_t *strength) - :name: FE_READ_SIGNAL_STRENGTH +.. c:macro:: FE_READ_SIGNAL_STRENGTH +``int ioctl(int fd, FE_READ_SIGNAL_STRENGTH, uint16_t *strength)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``strength`` The signal strength value is stored into \*strength. - Description =========== @@ -37,7 +37,6 @@ This ioctl call returns the signal strength value for the signal currently received by the front-end. For this command, read-only access to the device is sufficient. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-read-snr.rst b/Documentation/userspace-api/media/dvb/fe-read-snr.rst index 141e4fc661c2..e44e559ab7e8 100644 --- a/Documentation/userspace-api/media/dvb/fe-read-snr.rst +++ b/Documentation/userspace-api/media/dvb/fe-read-snr.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_READ_SNR: @@ -16,20 +17,19 @@ FE_READ_SNR Synopsis ======== -.. c:function:: int ioctl(int fd, FE_READ_SNR, int16_t *snr) - :name: FE_READ_SNR +.. c:macro:: FE_READ_SNR +``int ioctl(int fd, FE_READ_SNR, int16_t *snr)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``snr`` The signal-to-noise ratio is stored into \*snr. - Description =========== @@ -37,7 +37,6 @@ This ioctl call returns the signal-to-noise ratio for the signal currently received by the front-end. For this command, read-only access to the device is sufficient. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-read-status.rst b/Documentation/userspace-api/media/dvb/fe-read-status.rst index ba61feb5e535..75c6ee60ac9c 100644 --- a/Documentation/userspace-api/media/dvb/fe-read-status.rst +++ b/Documentation/userspace-api/media/dvb/fe-read-status.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_READ_STATUS: @@ -11,25 +12,23 @@ Name FE_READ_STATUS - Returns status information about the front-end. This call only requires - read-only access to the device - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_READ_STATUS, unsigned int *status ) - :name: FE_READ_STATUS +.. c:macro:: FE_READ_STATUS +``int ioctl(int fd, FE_READ_STATUS, unsigned int *status)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``status`` pointer to a bitmask integer filled with the values defined by enum :c:type:`fe_status`. - Description =========== @@ -44,7 +43,6 @@ written. varies according with the architecture. This needs to be fixed in the future. - int fe_status ============= @@ -52,7 +50,6 @@ The fe_status parameter is used to indicate the current state and/or state changes of the frontend hardware. It is produced using the enum :c:type:`fe_status` values on a bitmask - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst b/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst index bf9746f8a671..653cd99a66f5 100644 --- a/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst +++ b/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_READ_UNCORRECTED_BLOCKS: @@ -16,20 +17,19 @@ FE_READ_UNCORRECTED_BLOCKS Synopsis ======== -.. c:function:: int ioctl( int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks) - :name: FE_READ_UNCORRECTED_BLOCKS +.. c:macro:: FE_READ_UNCORRECTED_BLOCKS +``int ioctl(int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``ublocks`` The total number of uncorrected blocks seen by the driver so far. - Description =========== @@ -39,7 +39,6 @@ increment in block count during a specific time interval should be calculated. For this command, read-only access to the device is sufficient. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-set-frontend-tune-mode.rst b/Documentation/userspace-api/media/dvb/fe-set-frontend-tune-mode.rst index f0e178e3a180..56923c1a66b0 100644 --- a/Documentation/userspace-api/media/dvb/fe-set-frontend-tune-mode.rst +++ b/Documentation/userspace-api/media/dvb/fe-set-frontend-tune-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_SET_FRONTEND_TUNE_MODE: @@ -11,19 +12,18 @@ Name FE_SET_FRONTEND_TUNE_MODE - Allow setting tuner mode flags to the frontend. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_SET_FRONTEND_TUNE_MODE, unsigned int flags ) - :name: FE_SET_FRONTEND_TUNE_MODE +.. c:macro:: FE_SET_FRONTEND_TUNE_MODE +``int ioctl(int fd, FE_SET_FRONTEND_TUNE_MODE, unsigned int flags)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``flags`` Valid flags: @@ -37,14 +37,12 @@ Arguments is closed, this flag will be automatically turned off when the device is reopened read-write. - Description =========== Allow setting tuner mode flags to the frontend, between 0 (normal) or ``FE_TUNE_MODE_ONESHOT`` mode - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-set-frontend.rst b/Documentation/userspace-api/media/dvb/fe-set-frontend.rst index 2b169778e0d6..d1b857632059 100644 --- a/Documentation/userspace-api/media/dvb/fe-set-frontend.rst +++ b/Documentation/userspace-api/media/dvb/fe-set-frontend.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_SET_FRONTEND: @@ -13,24 +14,22 @@ Name FE_SET_FRONTEND - Synopsis ======== -.. c:function:: int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p) - :name: FE_SET_FRONTEND +.. c:macro:: FE_SET_FRONTEND +``int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. + File descriptor returned by :c:func:`open()`. ``p`` Points to parameters for tuning operation. - Description =========== @@ -44,7 +43,6 @@ operation is initiated before the previous one was completed, the previous operation will be aborted in favor of the new one. This command requires read/write access to the device. - Return Value ============ @@ -66,6 +64,5 @@ appropriately. - Maximum supported symbol rate reached. - Generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/fe-set-tone.rst b/Documentation/userspace-api/media/dvb/fe-set-tone.rst index 944d54488e71..9f44bf946183 100644 --- a/Documentation/userspace-api/media/dvb/fe-set-tone.rst +++ b/Documentation/userspace-api/media/dvb/fe-set-tone.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_SET_TONE: @@ -11,24 +12,22 @@ Name FE_SET_TONE - Sets/resets the generation of the continuous 22kHz tone. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_SET_TONE, enum fe_sec_tone_mode tone ) - :name: FE_SET_TONE +.. c:macro:: FE_SET_TONE +``int ioctl(int fd, FE_SET_TONE, enum fe_sec_tone_mode tone)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``tone`` an integer enumered value described at :c:type:`fe_sec_tone_mode` - Description =========== @@ -45,7 +44,6 @@ this is done using the DiSEqC ioctls. capability of selecting the band. So, it is recommended that applications would change to SEC_TONE_OFF when the device is not used. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/fe-set-voltage.rst b/Documentation/userspace-api/media/dvb/fe-set-voltage.rst index 73740be0e7dc..c66771830be1 100644 --- a/Documentation/userspace-api/media/dvb/fe-set-voltage.rst +++ b/Documentation/userspace-api/media/dvb/fe-set-voltage.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _FE_SET_VOLTAGE: @@ -11,24 +12,22 @@ Name FE_SET_VOLTAGE - Allow setting the DC level sent to the antenna subsystem. - Synopsis ======== -.. c:function:: int ioctl( int fd, FE_SET_VOLTAGE, enum fe_sec_voltage voltage ) - :name: FE_SET_VOLTAGE +.. c:macro:: FE_SET_VOLTAGE +``int ioctl(int fd, FE_SET_VOLTAGE, enum fe_sec_voltage voltage)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``voltage`` an integer enumered value described at :c:type:`fe_sec_voltage` - Description =========== @@ -49,7 +48,6 @@ power up the LNBf. the voltage to SEC_VOLTAGE_OFF while the device is not is used is recommended. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/frontend_f_close.rst b/Documentation/userspace-api/media/dvb/frontend_f_close.rst index 96e15b4ee76d..52c323a85014 100644 --- a/Documentation/userspace-api/media/dvb/frontend_f_close.rst +++ b/Documentation/userspace-api/media/dvb/frontend_f_close.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _frontend_f_close: @@ -11,7 +12,6 @@ Name fe-close - Close a frontend device - Synopsis ======== @@ -19,16 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: dvb-fe-close Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <dvb-fe-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -37,7 +34,6 @@ This system call closes a previously opened front-end device. After closing a front-end device, its corresponding hardware might be powered down automatically. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/frontend_f_open.rst b/Documentation/userspace-api/media/dvb/frontend_f_open.rst index 49a01dd58d03..bb37eded0870 100644 --- a/Documentation/userspace-api/media/dvb/frontend_f_open.rst +++ b/Documentation/userspace-api/media/dvb/frontend_f_open.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.fe .. _frontend_f_open: @@ -11,7 +12,6 @@ Name fe-open - Open a frontend device - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <fcntl.h> - .. c:function:: int open( const char *device_name, int flags ) - :name: dvb-fe-open Arguments ========= @@ -44,7 +42,6 @@ Arguments Other flags have no effect. - Description =========== @@ -70,16 +67,14 @@ the specified mode. This implies that the corresponding hardware is powered up, and that other front-ends may have been powered down to make that possible. - Return Value ============ -On success :ref:`open() <frontend_f_open>` returns the new file descriptor. +On success :c:func:`open()` returns the new file descriptor. On error, -1 is returned, and the ``errno`` variable is set appropriately. Possible error codes are: - On success 0 is returned, and :c:type:`ca_slot_info` is filled. On error -1 is returned, and the ``errno`` variable is set @@ -105,6 +100,5 @@ appropriately. - The limit on the total number of files open on the system has been reached. - The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. diff --git a/Documentation/userspace-api/media/dvb/net-add-if.rst b/Documentation/userspace-api/media/dvb/net-add-if.rst index 0859830b645e..022b4c626249 100644 --- a/Documentation/userspace-api/media/dvb/net-add-if.rst +++ b/Documentation/userspace-api/media/dvb/net-add-if.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.net .. _NET_ADD_IF: @@ -11,24 +12,22 @@ Name NET_ADD_IF - Creates a new network interface for a given Packet ID. - Synopsis ======== -.. c:function:: int ioctl( int fd, NET_ADD_IF, struct dvb_net_if *net_if ) - :name: NET_ADD_IF +.. c:macro:: NET_ADD_IF +``int ioctl(int fd, NET_ADD_IF, struct dvb_net_if *net_if)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``net_if`` pointer to struct :c:type:`dvb_net_if` - Description =========== diff --git a/Documentation/userspace-api/media/dvb/net-get-if.rst b/Documentation/userspace-api/media/dvb/net-get-if.rst index d8c9f939d62c..e99696c9db74 100644 --- a/Documentation/userspace-api/media/dvb/net-get-if.rst +++ b/Documentation/userspace-api/media/dvb/net-get-if.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.net .. _NET_GET_IF: @@ -11,24 +12,22 @@ Name NET_GET_IF - Read the configuration data of an interface created via - :ref:`NET_ADD_IF <net>`. - Synopsis ======== -.. c:function:: int ioctl( int fd, NET_GET_IF, struct dvb_net_if *net_if ) - :name: NET_GET_IF +.. c:macro:: NET_GET_IF +``int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``net_if`` pointer to struct :c:type:`dvb_net_if` - Description =========== @@ -39,7 +38,6 @@ encapsulation type used on such interface. If the interface was not created yet with :ref:`NET_ADD_IF <net>`, it will return -1 and fill the ``errno`` with ``EINVAL`` error code. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/net-remove-if.rst b/Documentation/userspace-api/media/dvb/net-remove-if.rst index ecbcacbaf9f7..ac88691c0423 100644 --- a/Documentation/userspace-api/media/dvb/net-remove-if.rst +++ b/Documentation/userspace-api/media/dvb/net-remove-if.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.net .. _NET_REMOVE_IF: @@ -11,31 +12,28 @@ Name NET_REMOVE_IF - Removes a network interface. - Synopsis ======== -.. c:function:: int ioctl( int fd, NET_REMOVE_IF, int ifnum ) - :name: NET_REMOVE_IF +.. c:macro:: NET_REMOVE_IF +``int ioctl(int fd, NET_REMOVE_IF, int ifnum)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <frontend_f_open>`. + File descriptor returned by :c:func:`open()`. ``net_if`` number of the interface to be removed - Description =========== The NET_REMOVE_IF ioctl deletes an interface previously created via :ref:`NET_ADD_IF <net>`. - Return Value ============ diff --git a/Documentation/userspace-api/media/dvb/video-clear-buffer.rst b/Documentation/userspace-api/media/dvb/video-clear-buffer.rst index fa1f2f49bdac..a7730559bbb2 100644 --- a/Documentation/userspace-api/media/dvb/video-clear-buffer.rst +++ b/Documentation/userspace-api/media/dvb/video-clear-buffer.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_CLEAR_BUFFER: @@ -16,9 +17,9 @@ VIDEO_CLEAR_BUFFER Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_CLEAR_BUFFER) - :name: VIDEO_CLEAR_BUFFER +.. c:macro:: VIDEO_CLEAR_BUFFER +``int ioctl(fd, VIDEO_CLEAR_BUFFER)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,14 +40,12 @@ Arguments - Equals VIDEO_CLEAR_BUFFER for this command. - Description ----------- This ioctl call clears all video buffers in the driver and in the decoder hardware. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-command.rst b/Documentation/userspace-api/media/dvb/video-command.rst index ef0da85d5f92..cae9445eb3af 100644 --- a/Documentation/userspace-api/media/dvb/video-command.rst +++ b/Documentation/userspace-api/media/dvb/video-command.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_COMMAND: @@ -16,9 +17,9 @@ VIDEO_COMMAND Synopsis -------- -.. c:function:: int ioctl(int fd, VIDEO_COMMAND, struct video_command *cmd) - :name: VIDEO_COMMAND +.. c:macro:: VIDEO_COMMAND +``int ioctl(int fd, VIDEO_COMMAND, struct video_command *cmd)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Commands the decoder. - Description ----------- @@ -59,7 +58,7 @@ subset of the ``v4l2_decoder_cmd`` struct, so refer to the :ref:`VIDIOC_DECODER_CMD` documentation for more information. -.. c:type:: struct video_command +.. c:type:: video_command .. code-block:: c @@ -89,7 +88,6 @@ more information. }; }; - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-continue.rst b/Documentation/userspace-api/media/dvb/video-continue.rst index 9a767b50b23b..bc34bf3989e4 100644 --- a/Documentation/userspace-api/media/dvb/video-continue.rst +++ b/Documentation/userspace-api/media/dvb/video-continue.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_CONTINUE: @@ -16,9 +17,9 @@ VIDEO_CONTINUE Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_CONTINUE) - :name: VIDEO_CONTINUE +.. c:macro:: VIDEO_CONTINUE +``int ioctl(fd, VIDEO_CONTINUE)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,7 +40,6 @@ Arguments - Equals VIDEO_CONTINUE for this command. - Description ----------- @@ -50,7 +49,6 @@ V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call restarts decoding and playing processes of the video stream which was played before a call to VIDEO_FREEZE was made. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-fast-forward.rst b/Documentation/userspace-api/media/dvb/video-fast-forward.rst index c43a13c7ae75..e71fa8d6965b 100644 --- a/Documentation/userspace-api/media/dvb/video-fast-forward.rst +++ b/Documentation/userspace-api/media/dvb/video-fast-forward.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_FAST_FORWARD: @@ -16,9 +17,9 @@ VIDEO_FAST_FORWARD Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames) - :name: VIDEO_FAST_FORWARD +.. c:macro:: VIDEO_FAST_FORWARD +``int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - The number of frames to skip. - Description ----------- @@ -54,7 +53,6 @@ This ioctl call asks the Video Device to skip decoding of N number of I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is selected. - Return Value ------------ @@ -63,12 +61,10 @@ appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. - .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EPERM`` diff --git a/Documentation/userspace-api/media/dvb/video-fclose.rst b/Documentation/userspace-api/media/dvb/video-fclose.rst index 27ccb2d6f961..01d24d548439 100644 --- a/Documentation/userspace-api/media/dvb/video-fclose.rst +++ b/Documentation/userspace-api/media/dvb/video-fclose.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _video_fclose: @@ -18,7 +19,6 @@ Synopsis .. c:function:: int close(int fd) - Arguments --------- @@ -26,20 +26,17 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd - File descriptor returned by a previous call to open(). - Description ----------- This system call closes a previously opened video device. - Return Value ------------ @@ -47,7 +44,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EBADF`` diff --git a/Documentation/userspace-api/media/dvb/video-fopen.rst b/Documentation/userspace-api/media/dvb/video-fopen.rst index aa1dc6020fa7..1371b083e4e8 100644 --- a/Documentation/userspace-api/media/dvb/video-fopen.rst +++ b/Documentation/userspace-api/media/dvb/video-fopen.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _video_fopen: @@ -18,7 +19,6 @@ Synopsis .. c:function:: int open(const char *deviceName, int flags) - Arguments --------- @@ -26,7 +26,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - const char \*deviceName @@ -59,7 +58,6 @@ Arguments - - (blocking mode is the default) - Description ----------- @@ -79,7 +77,6 @@ returned. If the Video Device is opened in O_RDONLY mode, the only ioctl call that can be used is VIDEO_GET_STATUS. All other call will return an error code. - Return Value ------------ @@ -89,7 +86,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``ENODEV`` diff --git a/Documentation/userspace-api/media/dvb/video-freeze.rst b/Documentation/userspace-api/media/dvb/video-freeze.rst index 93e0ae8e79d8..4321f257cb70 100644 --- a/Documentation/userspace-api/media/dvb/video-freeze.rst +++ b/Documentation/userspace-api/media/dvb/video-freeze.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_FREEZE: @@ -16,9 +17,9 @@ VIDEO_FREEZE Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_FREEZE) - :name: VIDEO_FREEZE +.. c:macro:: VIDEO_FREEZE +``int ioctl(fd, VIDEO_FREEZE)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,7 +40,6 @@ Arguments - Equals VIDEO_FREEZE for this command. - Description ----------- @@ -54,7 +53,6 @@ If VIDEO_SOURCE_MEMORY is selected in the ioctl call VIDEO_SELECT_SOURCE, the Digital TV subsystem will not decode any more data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-fwrite.rst b/Documentation/userspace-api/media/dvb/video-fwrite.rst index 5ccdf78f11e1..a07fd7d7a40e 100644 --- a/Documentation/userspace-api/media/dvb/video-fwrite.rst +++ b/Documentation/userspace-api/media/dvb/video-fwrite.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _video_fwrite: @@ -18,7 +19,6 @@ Synopsis .. c:function:: size_t write(int fd, const void *buf, size_t count) - Arguments --------- @@ -26,7 +26,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -45,7 +44,6 @@ Arguments - Size of buf. - Description ----------- @@ -55,7 +53,6 @@ PES format, unless the capability allows other formats. If O_NONBLOCK is not specified the function will block until buffer space is available. The amount of data to be transferred is implied by count. - Return Value ------------ @@ -63,7 +60,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EPERM`` diff --git a/Documentation/userspace-api/media/dvb/video-get-capabilities.rst b/Documentation/userspace-api/media/dvb/video-get-capabilities.rst index 619f78a66b6c..01e09f56656c 100644 --- a/Documentation/userspace-api/media/dvb/video-get-capabilities.rst +++ b/Documentation/userspace-api/media/dvb/video-get-capabilities.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_CAPABILITIES: @@ -16,9 +17,9 @@ VIDEO_GET_CAPABILITIES Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_GET_CAPABILITIES, unsigned int *cap) - :name: VIDEO_GET_CAPABILITIES +.. c:macro:: VIDEO_GET_CAPABILITIES +``int ioctl(fd, VIDEO_GET_CAPABILITIES, unsigned int *cap)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Pointer to a location where to store the capability information. - Description ----------- @@ -54,7 +53,6 @@ This ioctl call asks the video device about its decoding capabilities. On success it returns and integer which has bits set according to the defines in section ??. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-get-event.rst b/Documentation/userspace-api/media/dvb/video-get-event.rst index 29566a245fcd..90382bc36cfe 100644 --- a/Documentation/userspace-api/media/dvb/video-get-event.rst +++ b/Documentation/userspace-api/media/dvb/video-get-event.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_EVENT: @@ -16,9 +17,9 @@ VIDEO_GET_EVENT Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_GET_EVENT, struct video_event *ev) - :name: VIDEO_GET_EVENT +.. c:macro:: VIDEO_GET_EVENT +``int ioctl(fd, VIDEO_GET_EVENT, struct video_event *ev)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Points to the location where the event, if any, is to be stored. - Description ----------- @@ -93,7 +92,6 @@ appropriately. The generic error codes are described at the :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EWOULDBLOCK`` diff --git a/Documentation/userspace-api/media/dvb/video-get-frame-count.rst b/Documentation/userspace-api/media/dvb/video-get-frame-count.rst index 5f65f8dba184..b48ac8c58a41 100644 --- a/Documentation/userspace-api/media/dvb/video-get-frame-count.rst +++ b/Documentation/userspace-api/media/dvb/video-get-frame-count.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_FRAME_COUNT: @@ -16,9 +17,9 @@ VIDEO_GET_FRAME_COUNT Synopsis -------- -.. c:function:: int ioctl(int fd, VIDEO_GET_FRAME_COUNT, __u64 *pts) - :name: VIDEO_GET_FRAME_COUNT +.. c:macro:: VIDEO_GET_FRAME_COUNT +``int ioctl(int fd, VIDEO_GET_FRAME_COUNT, __u64 *pts)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -47,7 +47,6 @@ Arguments - Returns the number of frames displayed since the decoder was started. - Description ----------- @@ -58,7 +57,6 @@ control. This ioctl call asks the Video Device to return the number of displayed frames since the decoder was started. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-get-pts.rst b/Documentation/userspace-api/media/dvb/video-get-pts.rst index 28655a1a9249..fedaff41be0b 100644 --- a/Documentation/userspace-api/media/dvb/video-get-pts.rst +++ b/Documentation/userspace-api/media/dvb/video-get-pts.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_PTS: @@ -16,9 +17,9 @@ VIDEO_GET_PTS Synopsis -------- -.. c:function:: int ioctl(int fd, VIDEO_GET_PTS, __u64 *pts) - :name: VIDEO_GET_PTS +.. c:macro:: VIDEO_GET_PTS +``int ioctl(int fd, VIDEO_GET_PTS, __u64 *pts)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -51,7 +51,6 @@ Arguments but may also be a value close to it like the PTS of the last decoded frame or the last PTS extracted by the PES parser. - Description ----------- @@ -62,7 +61,6 @@ control. This ioctl call asks the Video Device to return the current PTS timestamp. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-get-size.rst b/Documentation/userspace-api/media/dvb/video-get-size.rst index a199afbfc1b1..de34331c5bd1 100644 --- a/Documentation/userspace-api/media/dvb/video-get-size.rst +++ b/Documentation/userspace-api/media/dvb/video-get-size.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_SIZE: @@ -16,9 +17,9 @@ VIDEO_GET_SIZE Synopsis -------- -.. c:function:: int ioctl(int fd, VIDEO_GET_SIZE, video_size_t *size) - :name: VIDEO_GET_SIZE +.. c:macro:: VIDEO_GET_SIZE +``int ioctl(int fd, VIDEO_GET_SIZE, video_size_t *size)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Returns the size and aspect ratio. - Description ----------- @@ -62,7 +61,6 @@ This ioctl returns the size and aspect ratio. video_format_t aspect_ratio; } video_size_t; - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-get-status.rst b/Documentation/userspace-api/media/dvb/video-get-status.rst index 3f29dac18a21..9b86fbf411d4 100644 --- a/Documentation/userspace-api/media/dvb/video-get-status.rst +++ b/Documentation/userspace-api/media/dvb/video-get-status.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_GET_STATUS: @@ -16,9 +17,9 @@ VIDEO_GET_STATUS Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_GET_STATUS, struct video_status *status) - :name: VIDEO_GET_STATUS +.. c:macro:: VIDEO_GET_STATUS +``int ioctl(fd, VIDEO_GET_STATUS, struct video_status *status)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Returns the current status of the Video Device. - Description ----------- diff --git a/Documentation/userspace-api/media/dvb/video-play.rst b/Documentation/userspace-api/media/dvb/video-play.rst index 71db54d840cb..35ac8b98fdbf 100644 --- a/Documentation/userspace-api/media/dvb/video-play.rst +++ b/Documentation/userspace-api/media/dvb/video-play.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_PLAY: @@ -16,9 +17,9 @@ VIDEO_PLAY Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_PLAY) - :name: VIDEO_PLAY +.. c:macro:: VIDEO_PLAY +``int ioctl(fd, VIDEO_PLAY)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -40,7 +40,6 @@ Arguments - Equals VIDEO_PLAY for this command. - Description ----------- @@ -50,7 +49,6 @@ V4L2 :ref:`VIDIOC_DECODER_CMD` instead. This ioctl call asks the Video Device to start playing a video stream from the selected source. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-select-source.rst b/Documentation/userspace-api/media/dvb/video-select-source.rst index 2e4ee53fa155..929a20985d53 100644 --- a/Documentation/userspace-api/media/dvb/video-select-source.rst +++ b/Documentation/userspace-api/media/dvb/video-select-source.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SELECT_SOURCE: @@ -16,9 +17,9 @@ VIDEO_SELECT_SOURCE Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source) - :name: VIDEO_SELECT_SOURCE +.. c:macro:: VIDEO_SELECT_SOURCE +``int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Indicates which source shall be used for the Video stream. - Description ----------- diff --git a/Documentation/userspace-api/media/dvb/video-set-blank.rst b/Documentation/userspace-api/media/dvb/video-set-blank.rst index 5454fe7905bd..70249a6ba125 100644 --- a/Documentation/userspace-api/media/dvb/video-set-blank.rst +++ b/Documentation/userspace-api/media/dvb/video-set-blank.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SET_BLANK: @@ -16,9 +17,9 @@ VIDEO_SET_BLANK Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SET_BLANK, boolean mode) - :name: VIDEO_SET_BLANK +.. c:macro:: VIDEO_SET_BLANK +``int ioctl(fd, VIDEO_SET_BLANK, boolean mode)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -51,13 +51,11 @@ Arguments - - FALSE: Show last decoded frame. - Description ----------- This ioctl call asks the Video Device to blank out the picture. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-set-display-format.rst b/Documentation/userspace-api/media/dvb/video-set-display-format.rst index ada6113e2f2d..1de4f40ae732 100644 --- a/Documentation/userspace-api/media/dvb/video-set-display-format.rst +++ b/Documentation/userspace-api/media/dvb/video-set-display-format.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SET_DISPLAY_FORMAT: @@ -16,9 +17,9 @@ VIDEO_SET_DISPLAY_FORMAT Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SET_DISPLAY_FORMAT) - :name: VIDEO_SET_DISPLAY_FORMAT +.. c:macro:: VIDEO_SET_DISPLAY_FORMAT +``int ioctl(fd, VIDEO_SET_DISPLAY_FORMAT)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,14 +46,12 @@ Arguments - Selects the video format to be used. - Description ----------- This ioctl call asks the Video Device to select the video format to be applied by the MPEG chip on the video. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-set-format.rst b/Documentation/userspace-api/media/dvb/video-set-format.rst index 758a5d1642ab..bb64e37ae081 100644 --- a/Documentation/userspace-api/media/dvb/video-set-format.rst +++ b/Documentation/userspace-api/media/dvb/video-set-format.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SET_FORMAT: @@ -16,9 +17,9 @@ VIDEO_SET_FORMAT Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SET_FORMAT, video_format_t format) - :name: VIDEO_SET_FORMAT +.. c:macro:: VIDEO_SET_FORMAT +``int ioctl(fd, VIDEO_SET_FORMAT, video_format_t format)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - video format of TV as defined in section ??. - Description ----------- @@ -72,12 +71,10 @@ appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. - .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EINVAL`` diff --git a/Documentation/userspace-api/media/dvb/video-set-streamtype.rst b/Documentation/userspace-api/media/dvb/video-set-streamtype.rst index f3a99858b1db..1f31c048bdbc 100644 --- a/Documentation/userspace-api/media/dvb/video-set-streamtype.rst +++ b/Documentation/userspace-api/media/dvb/video-set-streamtype.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SET_STREAMTYPE: @@ -16,9 +17,9 @@ VIDEO_SET_STREAMTYPE Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SET_STREAMTYPE, int type) - :name: VIDEO_SET_STREAMTYPE +.. c:macro:: VIDEO_SET_STREAMTYPE +``int ioctl(fd, VIDEO_SET_STREAMTYPE, int type)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - stream type - Description ----------- @@ -54,7 +53,6 @@ This ioctl tells the driver which kind of stream to expect being written to it. If this call is not used the default of video PES is used. Some drivers might not support this call and always expect PES. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-slowmotion.rst b/Documentation/userspace-api/media/dvb/video-slowmotion.rst index 2ccb84d6a68b..1478fcc30cb8 100644 --- a/Documentation/userspace-api/media/dvb/video-slowmotion.rst +++ b/Documentation/userspace-api/media/dvb/video-slowmotion.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_SLOWMOTION: @@ -16,9 +17,9 @@ VIDEO_SLOWMOTION Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_SLOWMOTION, int nFrames) - :name: VIDEO_SLOWMOTION +.. c:macro:: VIDEO_SLOWMOTION +``int ioctl(fd, VIDEO_SLOWMOTION, int nFrames)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - The number of times to repeat each frame. - Description ----------- @@ -54,7 +53,6 @@ This ioctl call asks the video device to repeat decoding frames N number of times. This call can only be used if VIDEO_SOURCE_MEMORY is selected. - Return Value ------------ @@ -63,12 +61,10 @@ appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. - .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``EPERM`` diff --git a/Documentation/userspace-api/media/dvb/video-stillpicture.rst b/Documentation/userspace-api/media/dvb/video-stillpicture.rst index a04f9f3ed162..d25384222a20 100644 --- a/Documentation/userspace-api/media/dvb/video-stillpicture.rst +++ b/Documentation/userspace-api/media/dvb/video-stillpicture.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_STILLPICTURE: @@ -16,9 +17,9 @@ VIDEO_STILLPICTURE Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_STILLPICTURE, struct video_still_picture *sp) - :name: VIDEO_STILLPICTURE +.. c:macro:: VIDEO_STILLPICTURE +``int ioctl(fd, VIDEO_STILLPICTURE, struct video_still_picture *sp)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Pointer to a location where an I-frame and size is stored. - Description ----------- @@ -54,7 +53,6 @@ This ioctl call asks the Video Device to display a still picture (I-frame). The input data shall contain an I-frame. If the pointer is NULL, then the current displayed still picture is blanked. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-stop.rst b/Documentation/userspace-api/media/dvb/video-stop.rst index 9318655dce23..96f61c5b48a2 100644 --- a/Documentation/userspace-api/media/dvb/video-stop.rst +++ b/Documentation/userspace-api/media/dvb/video-stop.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_STOP: @@ -16,9 +17,9 @@ VIDEO_STOP Synopsis -------- -.. c:function:: int ioctl(fd, VIDEO_STOP, boolean mode) - :name: VIDEO_STOP +.. c:macro:: VIDEO_STOP +``int ioctl(fd, VIDEO_STOP, boolean mode)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -56,7 +56,6 @@ Arguments - - FALSE: Show last decoded frame. - Description ----------- @@ -67,7 +66,6 @@ This ioctl call asks the Video Device to stop playing the current stream. Depending on the input parameter, the screen can be blanked out or displaying the last decoded frame. - Return Value ------------ diff --git a/Documentation/userspace-api/media/dvb/video-try-command.rst b/Documentation/userspace-api/media/dvb/video-try-command.rst index 430c36035329..79bf3dfb8a32 100644 --- a/Documentation/userspace-api/media/dvb/video-try-command.rst +++ b/Documentation/userspace-api/media/dvb/video-try-command.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.video .. _VIDEO_TRY_COMMAND: @@ -16,9 +17,9 @@ VIDEO_TRY_COMMAND Synopsis -------- -.. c:function:: int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd) - :name: VIDEO_TRY_COMMAND +.. c:macro:: VIDEO_TRY_COMMAND +``int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)`` Arguments --------- @@ -27,7 +28,6 @@ Arguments :header-rows: 0 :stub-columns: 0 - - .. row 1 - int fd @@ -46,7 +46,6 @@ Arguments - Try a decoder command. - Description ----------- @@ -59,7 +58,6 @@ subset of the ``v4l2_decoder_cmd`` struct, so refer to the :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation for more information. - Return Value ------------ diff --git a/Documentation/userspace-api/media/mediactl/media-func-close.rst b/Documentation/userspace-api/media/mediactl/media-func-close.rst index ec571b34ce69..8ac2443e76c1 100644 --- a/Documentation/userspace-api/media/mediactl/media-func-close.rst +++ b/Documentation/userspace-api/media/mediactl/media-func-close.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media-func-close: @@ -11,7 +12,6 @@ Name media-close - Close a media device - Synopsis ======== @@ -19,16 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: mc-close Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <mc-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -36,11 +33,10 @@ Description Closes the media device. Resources associated with the file descriptor are freed. The device configuration remain unchanged. - Return Value ============ -:ref:`close() <media-func-close>` returns 0 on success. On error, -1 is returned, and +:c:func:`close()` returns 0 on success. On error, -1 is returned, and ``errno`` is set appropriately. Possible error codes are: EBADF diff --git a/Documentation/userspace-api/media/mediactl/media-func-ioctl.rst b/Documentation/userspace-api/media/mediactl/media-func-ioctl.rst index 35ed549bec0e..9e9a838f4795 100644 --- a/Documentation/userspace-api/media/mediactl/media-func-ioctl.rst +++ b/Documentation/userspace-api/media/mediactl/media-func-ioctl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media-func-ioctl: @@ -11,7 +12,6 @@ Name media-ioctl - Control a media device - Synopsis ======== @@ -19,15 +19,13 @@ Synopsis #include <sys/ioctl.h> - -.. c:function:: int ioctl( int fd, int request, void *argp ) - :name: mc-ioctl +``int ioctl(int fd, int request, void *argp)`` Arguments ========= ``fd`` - File descriptor returned by :c:func:`open() <mc-open>`. + File descriptor returned by :c:func:`open()`. ``request`` Media ioctl request code as defined in the media.h header file, for @@ -36,7 +34,6 @@ Arguments ``argp`` Pointer to a request-specific structure. - Description =========== @@ -52,7 +49,6 @@ their parameters are located in the media.h header file. All media ioctl requests, their respective function and parameters are specified in :ref:`media-user-func`. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-func-open.rst b/Documentation/userspace-api/media/mediactl/media-func-open.rst index 2c2595157ea3..24487cb0a308 100644 --- a/Documentation/userspace-api/media/mediactl/media-func-open.rst +++ b/Documentation/userspace-api/media/mediactl/media-func-open.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media-func-open: @@ -11,7 +12,6 @@ Name media-open - Open a media device - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <fcntl.h> - .. c:function:: int open( const char *device_name, int flags ) - :name: mc-open Arguments ========= @@ -33,11 +31,10 @@ Arguments Open flags. Access mode must be either ``O_RDONLY`` or ``O_RDWR``. Other flags have no effect. - Description =========== -To open a media device applications call :ref:`open() <media-func-open>` with the +To open a media device applications call :c:func:`open()` with the desired device name. The function has no side effects; the device configuration remain unchanged. @@ -45,11 +42,10 @@ When the device is opened in read-only mode, attempts to modify its configuration will result in an error, and ``errno`` will be set to EBADF. - Return Value ============ -:ref:`open() <func-open>` returns the new file descriptor on success. On error, +:c:func:`open()` returns the new file descriptor on success. On error, -1 is returned, and ``errno`` is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-device-info.rst b/Documentation/userspace-api/media/mediactl/media-ioc-device-info.rst index cde1ddfc0bfb..0c4c5d2cfcb2 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-device-info.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-device-info.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_device_info: @@ -11,24 +12,22 @@ Name MEDIA_IOC_DEVICE_INFO - Query device information - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_DEVICE_INFO, struct media_device_info *argp ) - :name: MEDIA_IOC_DEVICE_INFO +.. c:macro:: MEDIA_IOC_DEVICE_INFO +``int ioctl(int fd, MEDIA_IOC_DEVICE_INFO, struct media_device_info *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`media_device_info`. - Description =========== @@ -38,7 +37,6 @@ a struct :c:type:`media_device_info`. The driver fills the structure and returns the information to the application. The ioctl never fails. - .. c:type:: media_device_info .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -48,7 +46,6 @@ ioctl never fails. :stub-columns: 0 :widths: 1 1 2 - * - char - ``driver``\ [16] - Name of the driver implementing the media API as a NUL-terminated @@ -94,7 +91,6 @@ ioctl never fails. - Reserved for future extensions. Drivers and applications must set this array to zero. - The ``serial`` and ``bus_info`` fields can be used to distinguish between multiple instances of otherwise identical hardware. The serial number takes precedence when provided and can be assumed to be unique. @@ -102,7 +98,6 @@ If the serial number is an empty string, the ``bus_info`` field can be used instead. The ``bus_info`` field is guaranteed to be unique, but can vary across reboots or device unplug/replug. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-enum-entities.rst b/Documentation/userspace-api/media/mediactl/media-ioc-enum-entities.rst index 93e35f198f47..92dd8ecd538c 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-enum-entities.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-enum-entities.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_enum_entities: @@ -11,24 +12,22 @@ Name MEDIA_IOC_ENUM_ENTITIES - Enumerate entities and their properties - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_ENUM_ENTITIES, struct media_entity_desc *argp ) - :name: MEDIA_IOC_ENUM_ENTITIES +.. c:macro:: MEDIA_IOC_ENUM_ENTITIES +``int ioctl(int fd, MEDIA_IOC_ENUM_ENTITIES, struct media_entity_desc *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`media_entity_desc`. - Description =========== @@ -49,7 +48,6 @@ Entity IDs can be non-contiguous. Applications must *not* try to enumerate entities by calling MEDIA_IOC_ENUM_ENTITIES with increasing id's until they get an error. - .. c:type:: media_entity_desc .. tabularcolumns:: |p{1.5cm}|p{1.7cm}|p{1.6cm}|p{1.5cm}|p{11.2cm}| @@ -136,7 +134,6 @@ id's until they get an error. * - } - - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-enum-links.rst b/Documentation/userspace-api/media/mediactl/media-ioc-enum-links.rst index f3e94c7b5dc3..3bc98a6a2ec5 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-enum-links.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-enum-links.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_enum_links: @@ -11,24 +12,22 @@ Name MEDIA_IOC_ENUM_LINKS - Enumerate all pads and links for a given entity - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_ENUM_LINKS, struct media_links_enum *argp ) - :name: MEDIA_IOC_ENUM_LINKS +.. c:macro:: MEDIA_IOC_ENUM_LINKS +``int ioctl(int fd, MEDIA_IOC_ENUM_LINKS, struct media_links_enum *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`media_links_enum`. - Description =========== @@ -53,7 +52,6 @@ outbound links can be retrieved with :ref:`MEDIA_IOC_ENUM_ENTITIES`. Only forward links that originate at one of the entity's source pads are returned during the enumeration process. - .. c:type:: media_links_enum .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -82,7 +80,6 @@ returned during the enumeration process. - Reserved for future extensions. Drivers and applications must set the array to zero. - .. c:type:: media_pad_desc .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -110,7 +107,6 @@ returned during the enumeration process. the array to zero. - .. c:type:: media_link_desc .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -137,7 +133,6 @@ returned during the enumeration process. - Reserved for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-g-topology.rst b/Documentation/userspace-api/media/mediactl/media-ioc-g-topology.rst index 9b7d2296b7fd..8f8b3b586edd 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-g-topology.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-g-topology.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_g_topology: @@ -11,24 +12,22 @@ Name MEDIA_IOC_G_TOPOLOGY - Enumerate the graph topology and graph element properties - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_G_TOPOLOGY, struct media_v2_topology *argp ) - :name: MEDIA_IOC_G_TOPOLOGY +.. c:macro:: MEDIA_IOC_G_TOPOLOGY +``int ioctl(int fd, MEDIA_IOC_G_TOPOLOGY, struct media_v2_topology *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`media_v2_topology`. - Description =========== @@ -120,7 +119,6 @@ desired arrays with the media graph elements. converted to a 64-bits integer. It can be zero. if zero, the ioctl won't store the links. It will just update ``num_links`` - .. tabularcolumns:: |p{1.6cm}|p{3.2cm}|p{12.7cm}| .. c:type:: media_v2_entity @@ -158,7 +156,6 @@ desired arrays with the media graph elements. - Reserved for future extensions. Drivers and applications must set this array to zero. - .. tabularcolumns:: |p{1.6cm}|p{3.2cm}|p{12.7cm}| .. c:type:: media_v2_interface @@ -192,7 +189,6 @@ desired arrays with the media graph elements. - Used only for device node interfaces. See :c:type:`media_v2_intf_devnode` for details. - .. tabularcolumns:: |p{1.6cm}|p{3.2cm}|p{12.7cm}| .. c:type:: media_v2_intf_devnode @@ -245,7 +241,6 @@ desired arrays with the media graph elements. - Reserved for future extensions. Drivers and applications must set this array to zero. - .. tabularcolumns:: |p{1.6cm}|p{3.2cm}|p{12.7cm}| .. c:type:: media_v2_link @@ -282,7 +277,6 @@ desired arrays with the media graph elements. - Reserved for future extensions. Drivers and applications must set this array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-request-alloc.rst b/Documentation/userspace-api/media/mediactl/media-ioc-request-alloc.rst index ea05ff0c5382..9195b4b8bf20 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-request-alloc.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-request-alloc.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_request_alloc: @@ -11,24 +12,22 @@ Name MEDIA_IOC_REQUEST_ALLOC - Allocate a request - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_REQUEST_ALLOC, int *argp ) - :name: MEDIA_IOC_REQUEST_ALLOC +.. c:macro:: MEDIA_IOC_REQUEST_ALLOC +``int ioctl(int fd, MEDIA_IOC_REQUEST_ALLOC, int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer. - Description =========== @@ -51,7 +50,7 @@ Finally, the file descriptor can be :ref:`polled <request-func-poll>` to wait for the request to complete. The request will remain allocated until all the file descriptors associated -with it are closed by :ref:`close() <request-func-close>` and the driver no +with it are closed by :c:func:`close()` and the driver no longer uses the request internally. See also :ref:`here <media-request-life-time>` for more information. diff --git a/Documentation/userspace-api/media/mediactl/media-ioc-setup-link.rst b/Documentation/userspace-api/media/mediactl/media-ioc-setup-link.rst index e2aa51015783..23208300cb61 100644 --- a/Documentation/userspace-api/media/mediactl/media-ioc-setup-link.rst +++ b/Documentation/userspace-api/media/mediactl/media-ioc-setup-link.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_ioc_setup_link: @@ -11,24 +12,22 @@ Name MEDIA_IOC_SETUP_LINK - Modify the properties of a link - Synopsis ======== -.. c:function:: int ioctl( int fd, MEDIA_IOC_SETUP_LINK, struct media_link_desc *argp ) - :name: MEDIA_IOC_SETUP_LINK +.. c:macro:: MEDIA_IOC_SETUP_LINK +``int ioctl(int fd, MEDIA_IOC_SETUP_LINK, struct media_link_desc *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <media-func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`media_link_desc`. - Description =========== @@ -53,7 +52,6 @@ non-dynamic link will return an ``EBUSY`` error code. If the specified link can't be found the driver returns with an ``EINVAL`` error code. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/media-request-ioc-queue.rst b/Documentation/userspace-api/media/mediactl/media-request-ioc-queue.rst index ca1b33196242..04b33db2bb45 100644 --- a/Documentation/userspace-api/media/mediactl/media-request-ioc-queue.rst +++ b/Documentation/userspace-api/media/mediactl/media-request-ioc-queue.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_request_ioc_queue: @@ -11,13 +12,12 @@ Name MEDIA_REQUEST_IOC_QUEUE - Queue a request - Synopsis ======== -.. c:function:: int ioctl( int request_fd, MEDIA_REQUEST_IOC_QUEUE ) - :name: MEDIA_REQUEST_IOC_QUEUE +.. c:macro:: MEDIA_REQUEST_IOC_QUEUE +``int ioctl(int request_fd, MEDIA_REQUEST_IOC_QUEUE)`` Arguments ========= @@ -25,7 +25,6 @@ Arguments ``request_fd`` File descriptor returned by :ref:`MEDIA_IOC_REQUEST_ALLOC`. - Description =========== diff --git a/Documentation/userspace-api/media/mediactl/media-request-ioc-reinit.rst b/Documentation/userspace-api/media/mediactl/media-request-ioc-reinit.rst index cfd503bdef70..57567b87b985 100644 --- a/Documentation/userspace-api/media/mediactl/media-request-ioc-reinit.rst +++ b/Documentation/userspace-api/media/mediactl/media-request-ioc-reinit.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media_request_ioc_reinit: @@ -11,13 +12,12 @@ Name MEDIA_REQUEST_IOC_REINIT - Re-initialize a request - Synopsis ======== -.. c:function:: int ioctl( int request_fd, MEDIA_REQUEST_IOC_REINIT ) - :name: MEDIA_REQUEST_IOC_REINIT +.. c:macro:: MEDIA_REQUEST_IOC_REINIT +``int ioctl(int request_fd, MEDIA_REQUEST_IOC_REINIT)`` Arguments ========= @@ -33,7 +33,7 @@ this request ioctl can be used to re-initialize a previously allocated request. Re-initializing a request will clear any existing data from the request. -This avoids having to :ref:`close() <request-func-close>` a completed +This avoids having to :c:func:`close()` a completed request and allocate a new request. Instead the completed request can just be re-initialized and it is ready to be used again. diff --git a/Documentation/userspace-api/media/mediactl/request-api.rst b/Documentation/userspace-api/media/mediactl/request-api.rst index c0fa4dbb2b28..6c4cbd9f08a5 100644 --- a/Documentation/userspace-api/media/mediactl/request-api.rst +++ b/Documentation/userspace-api/media/mediactl/request-api.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _media-request-api: @@ -93,7 +94,7 @@ regardless of whether a request is in use or not. Setting the same control through a request and also directly can lead to undefined behavior! -User-space can :ref:`poll() <request-func-poll>` a request file descriptor in +User-space can :c:func:`poll()` a request file descriptor in order to wait until the request completes. A request is considered complete once all its associated buffers are available for dequeuing and all the associated controls have been updated with the values at the time of completion. @@ -115,7 +116,7 @@ Recycling and Destruction ------------------------- Finally, a completed request can either be discarded or be reused. Calling -:ref:`close() <request-func-close>` on a request file descriptor will make +:c:func:`close()` on a request file descriptor will make that file descriptor unusable and the request will be freed once it is no longer in use by the kernel. That is, if the request is queued and then the file descriptor is closed, then it won't be freed until the driver completed diff --git a/Documentation/userspace-api/media/mediactl/request-func-close.rst b/Documentation/userspace-api/media/mediactl/request-func-close.rst index 04e00bb9defd..f4b8eb385ad7 100644 --- a/Documentation/userspace-api/media/mediactl/request-func-close.rst +++ b/Documentation/userspace-api/media/mediactl/request-func-close.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC.request .. _request-func-close: @@ -11,7 +12,6 @@ Name request-close - Close a request file descriptor - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: req-close Arguments ========= @@ -29,7 +27,6 @@ Arguments ``fd`` File descriptor returned by :ref:`MEDIA_IOC_REQUEST_ALLOC`. - Description =========== @@ -38,11 +35,10 @@ are freed once all file descriptors associated with the request are closed and the driver has completed the request. See :ref:`here <media-request-life-time>` for more information. - Return Value ============ -:ref:`close() <request-func-close>` returns 0 on success. On error, -1 is +:c:func:`close()` returns 0 on success. On error, -1 is returned, and ``errno`` is set appropriately. Possible error codes are: EBADF diff --git a/Documentation/userspace-api/media/mediactl/request-func-ioctl.rst b/Documentation/userspace-api/media/mediactl/request-func-ioctl.rst index 1e1c5edb860c..4fb3d2ef32d1 100644 --- a/Documentation/userspace-api/media/mediactl/request-func-ioctl.rst +++ b/Documentation/userspace-api/media/mediactl/request-func-ioctl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _request-func-ioctl: @@ -11,7 +12,6 @@ Name request-ioctl - Control a request file descriptor - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <sys/ioctl.h> - -.. c:function:: int ioctl( int fd, int cmd, void *argp ) - :name: req-ioctl +``int ioctl(int fd, int cmd, void *argp)`` Arguments ========= @@ -36,7 +34,6 @@ Arguments ``argp`` Pointer to a request-specific structure. - Description =========== @@ -52,7 +49,6 @@ their parameters are located in the media.h header file. All request ioctl commands, their respective function and parameters are specified in :ref:`media-user-func`. - Return Value ============ diff --git a/Documentation/userspace-api/media/mediactl/request-func-poll.rst b/Documentation/userspace-api/media/mediactl/request-func-poll.rst index 92947213d3d5..ce0043dbe7da 100644 --- a/Documentation/userspace-api/media/mediactl/request-func-poll.rst +++ b/Documentation/userspace-api/media/mediactl/request-func-poll.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: MC .. _request-func-poll: @@ -11,7 +12,6 @@ Name request-poll - Wait for some event on a file descriptor - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <sys/poll.h> - .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout ) - :name: request-poll Arguments ========= @@ -35,14 +33,13 @@ Arguments ``timeout`` Timeout to wait for events - Description =========== -With the :c:func:`poll() <request-func-poll>` function applications can wait +With the :c:func:`poll()` function applications can wait for a request to complete. -On success :c:func:`poll() <request-func-poll>` returns the number of file +On success :c:func:`poll()` returns the number of file descriptors that have been selected (that is, file descriptors for which the ``revents`` field of the respective struct :c:type:`pollfd` is non-zero). Request file descriptor set the ``POLLPRI`` flag in ``revents`` @@ -53,11 +50,10 @@ set appropriately. Attempting to poll for a request that is not yet queued will set the ``POLLERR`` flag in ``revents``. - Return Value ============ -On success, :c:func:`poll() <request-func-poll>` returns the number of +On success, :c:func:`poll()` returns the number of structures which have non-zero ``revents`` fields, or zero if the call timed out. On error -1 is returned, and the ``errno`` variable is set appropriately: diff --git a/Documentation/userspace-api/media/rc/lirc-get-features.rst b/Documentation/userspace-api/media/rc/lirc-get-features.rst index 6846ae99848c..66a243dbd437 100644 --- a/Documentation/userspace-api/media/rc/lirc-get-features.rst +++ b/Documentation/userspace-api/media/rc/lirc-get-features.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_get_features: @@ -14,8 +15,9 @@ LIRC_GET_FEATURES - Get the underlying hardware device's features Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_FEATURES, __u32 *features) - :name: LIRC_GET_FEATURES +.. c:macro:: LIRC_GET_FEATURES + +``int ioctl(int fd, LIRC_GET_FEATURES, __u32 *features)`` Arguments ========= @@ -26,11 +28,9 @@ Arguments ``features`` Bitmask with the LIRC features. - Description =========== - Get the underlying hardware device's features. If a driver does not announce support of certain features, calling of the corresponding ioctls is undefined. @@ -184,7 +184,6 @@ LIRC features Unused. Kept just to avoid breaking uAPI. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-get-rec-mode.rst b/Documentation/userspace-api/media/rc/lirc-get-rec-mode.rst index e8f397a87331..188478ed1233 100644 --- a/Documentation/userspace-api/media/rc/lirc-get-rec-mode.rst +++ b/Documentation/userspace-api/media/rc/lirc-get-rec-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_get_rec_mode: .. _lirc_set_rec_mode: @@ -15,11 +16,13 @@ LIRC_GET_REC_MODE/LIRC_SET_REC_MODE - Get/set current receive mode. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_REC_MODE, __u32 *mode) - :name: LIRC_GET_REC_MODE +.. c:macro:: LIRC_GET_REC_MODE -.. c:function:: int ioctl( int fd, LIRC_SET_REC_MODE, __u32 *mode) - :name: LIRC_SET_REC_MODE +``int ioctl(int fd, LIRC_GET_REC_MODE, __u32 *mode)`` + +.. c:macro:: LIRC_SET_REC_MODE + +``int ioctl(int fd, LIRC_SET_REC_MODE, __u32 *mode)`` Arguments ========= @@ -47,7 +50,6 @@ Return Value :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``ENODEV`` diff --git a/Documentation/userspace-api/media/rc/lirc-get-rec-resolution.rst b/Documentation/userspace-api/media/rc/lirc-get-rec-resolution.rst index 3f08aa7c24a9..e29445c5ce16 100644 --- a/Documentation/userspace-api/media/rc/lirc-get-rec-resolution.rst +++ b/Documentation/userspace-api/media/rc/lirc-get-rec-resolution.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_get_rec_resolution: @@ -14,8 +15,9 @@ LIRC_GET_REC_RESOLUTION - Obtain the value of receive resolution, in microsecond Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_REC_RESOLUTION, __u32 *microseconds) - :name: LIRC_GET_REC_RESOLUTION +.. c:macro:: LIRC_GET_REC_RESOLUTION + +``int ioctl(int fd, LIRC_GET_REC_RESOLUTION, __u32 *microseconds)`` Arguments ========= @@ -26,7 +28,6 @@ Arguments ``microseconds`` Resolution, in microseconds. - Description =========== @@ -38,7 +39,6 @@ This ioctl returns the integer value with such resolution, with can be used by userspace applications like lircd to automatically adjust the tolerance value. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-get-send-mode.rst b/Documentation/userspace-api/media/rc/lirc-get-send-mode.rst index f93b30c92193..77472fb5608a 100644 --- a/Documentation/userspace-api/media/rc/lirc-get-send-mode.rst +++ b/Documentation/userspace-api/media/rc/lirc-get-send-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_get_send_mode: .. _lirc_set_send_mode: @@ -15,11 +16,13 @@ LIRC_GET_SEND_MODE/LIRC_SET_SEND_MODE - Get/set current transmit mode. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_SEND_MODE, __u32 *mode ) - :name: LIRC_GET_SEND_MODE +.. c:macro:: LIRC_GET_SEND_MODE -.. c:function:: int ioctl( int fd, LIRC_SET_SEND_MODE, __u32 *mode ) - :name: LIRC_SET_SEND_MODE +``int ioctl(int fd, LIRC_GET_SEND_MODE, __u32 *mode)`` + +.. c:macro:: LIRC_SET_SEND_MODE + +``int ioctl(int fd, LIRC_SET_SEND_MODE, __u32 *mode)`` Arguments ========= @@ -30,7 +33,6 @@ Arguments ``mode`` The mode used for transmitting. - Description =========== @@ -44,14 +46,12 @@ modes the driver supports. Return Value ============ - .. tabularcolumns:: |p{2.5cm}|p{15.0cm}| .. flat-table:: :header-rows: 0 :stub-columns: 0 - - .. row 1 - ``ENODEV`` diff --git a/Documentation/userspace-api/media/rc/lirc-get-timeout.rst b/Documentation/userspace-api/media/rc/lirc-get-timeout.rst index ec191a383d75..f5f3e06d6206 100644 --- a/Documentation/userspace-api/media/rc/lirc-get-timeout.rst +++ b/Documentation/userspace-api/media/rc/lirc-get-timeout.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_get_min_timeout: .. _lirc_get_max_timeout: @@ -16,11 +17,13 @@ range for IR receive. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_MIN_TIMEOUT, __u32 *timeout) - :name: LIRC_GET_MIN_TIMEOUT +.. c:macro:: LIRC_GET_MIN_TIMEOUT -.. c:function:: int ioctl( int fd, LIRC_GET_MAX_TIMEOUT, __u32 *timeout) - :name: LIRC_GET_MAX_TIMEOUT +``int ioctl(int fd, LIRC_GET_MIN_TIMEOUT, __u32 *timeout)`` + +.. c:macro:: LIRC_GET_MAX_TIMEOUT + +``int ioctl(int fd, LIRC_GET_MAX_TIMEOUT, __u32 *timeout)`` Arguments ========= @@ -31,7 +34,6 @@ Arguments ``timeout`` Timeout, in microseconds. - Description =========== @@ -47,7 +49,6 @@ that can be set. both ioctls will return the same value even though the timeout cannot be changed via :ref:`LIRC_SET_REC_TIMEOUT`. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-read.rst b/Documentation/userspace-api/media/rc/lirc-read.rst index b94a349bd99e..d589560214f4 100644 --- a/Documentation/userspace-api/media/rc/lirc-read.rst +++ b/Documentation/userspace-api/media/rc/lirc-read.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc-read: @@ -11,7 +12,6 @@ Name lirc-read - Read from a LIRC device - Synopsis ======== @@ -19,10 +19,7 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t read( int fd, void *buf, size_t count ) - :name: lirc-read - Arguments ========= @@ -39,9 +36,9 @@ Arguments Description =========== -:ref:`read() <lirc-read>` attempts to read up to ``count`` bytes from file +:c:func:`read()` attempts to read up to ``count`` bytes from file descriptor ``fd`` into the buffer starting at ``buf``. If ``count`` is zero, -:ref:`read() <lirc-read>` returns zero and has no other results. If ``count`` +:c:func:`read()` returns zero and has no other results. If ``count`` is greater than ``SSIZE_MAX``, the result is unspecified. The exact format of the data depends on what :ref:`lirc_modes` a driver @@ -59,7 +56,6 @@ by hardware decoders. The :c:type:`rc_proto` member is set to the used for transmission, and ``scancode`` to the decoded scancode, and the ``keycode`` set to the keycode or ``KEY_RESERVED``. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-measure-carrier-mode.rst b/Documentation/userspace-api/media/rc/lirc-set-measure-carrier-mode.rst index 820d6bf28c1c..9bf9811a905a 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-measure-carrier-mode.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-measure-carrier-mode.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_measure_carrier_mode: @@ -14,8 +15,9 @@ LIRC_SET_MEASURE_CARRIER_MODE - enable or disable measure mode Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_MEASURE_CARRIER_MODE, __u32 *enable ) - :name: LIRC_SET_MEASURE_CARRIER_MODE +.. c:macro:: LIRC_SET_MEASURE_CARRIER_MODE + +``int ioctl(int fd, LIRC_SET_MEASURE_CARRIER_MODE, __u32 *enable)`` Arguments ========= @@ -27,7 +29,6 @@ Arguments enable = 1 means enable measure mode, enable = 0 means disable measure mode. - Description =========== @@ -37,7 +38,6 @@ Enable or disable measure mode. If enabled, from the next key press on, the driver will send ``LIRC_MODE2_FREQUENCY`` packets. By default this should be turned off. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst index e33e6a320b7a..530bc223930a 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_rec_carrier_range: @@ -15,8 +16,9 @@ IR receive. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency ) - :name: LIRC_SET_REC_CARRIER_RANGE +.. c:macro:: LIRC_SET_REC_CARRIER_RANGE + +``int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)`` Arguments ========= diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst index a6784d5e59c8..28c928f1cc14 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_rec_carrier: @@ -11,12 +12,12 @@ Name LIRC_SET_REC_CARRIER - Set carrier used to modulate IR receive. - Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_REC_CARRIER, __u32 *frequency ) - :name: LIRC_SET_REC_CARRIER +.. c:macro:: LIRC_SET_REC_CARRIER + +``int ioctl(int fd, LIRC_SET_REC_CARRIER, __u32 *frequency)`` Arguments ========= @@ -37,7 +38,6 @@ Set receive carrier used to modulate IR PWM pulses and spaces. If called together with :ref:`LIRC_SET_REC_CARRIER_RANGE`, this ioctl sets the upper bound frequency that will be recognized by the device. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-timeout-reports.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-timeout-reports.rst index 55be65df7d5a..83e7155c5796 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-rec-timeout-reports.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-timeout-reports.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_rec_timeout_reports: @@ -14,8 +15,9 @@ LIRC_SET_REC_TIMEOUT_REPORTS - enable or disable timeout reports for IR receive Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_REC_TIMEOUT_REPORTS, __u32 *enable ) - :name: LIRC_SET_REC_TIMEOUT_REPORTS +.. c:macro:: LIRC_SET_REC_TIMEOUT_REPORTS + +``int ioctl(int fd, LIRC_SET_REC_TIMEOUT_REPORTS, __u32 *enable)`` Arguments ========= @@ -27,7 +29,6 @@ Arguments enable = 1 means enable timeout report, enable = 0 means disable timeout reports. - Description =========== @@ -40,7 +41,6 @@ should be turned off. This ioctl is only valid for :ref:`LIRC_MODE_MODE2 <lirc-mode-mode2>`. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-timeout.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-timeout.rst index e91a0daecde6..8f3f9adf54ab 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-rec-timeout.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-timeout.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_rec_timeout: .. _lirc_get_rec_timeout: @@ -15,11 +16,13 @@ LIRC_GET_REC_TIMEOUT/LIRC_SET_REC_TIMEOUT - Get/set the integer value for IR ina Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_GET_REC_TIMEOUT, __u32 *timeout ) - :name: LIRC_GET_REC_TIMEOUT +.. c:macro:: LIRC_GET_REC_TIMEOUT -.. c:function:: int ioctl( int fd, LIRC_SET_REC_TIMEOUT, __u32 *timeout ) - :name: LIRC_SET_REC_TIMEOUT +``int ioctl(int fd, LIRC_GET_REC_TIMEOUT, __u32 *timeout)`` + +.. c:macro:: LIRC_SET_REC_TIMEOUT + +``int ioctl(int fd, LIRC_SET_REC_TIMEOUT, __u32 *timeout)`` Arguments ========= @@ -30,7 +33,6 @@ Arguments ``timeout`` Timeout, in microseconds. - Description =========== @@ -45,7 +47,6 @@ given value should be set. The range of supported timeout is given by :ref:`LIRC_GET_MIN_TIMEOUT`. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-send-carrier.rst b/Documentation/userspace-api/media/rc/lirc-set-send-carrier.rst index e199aac7d8e0..e3810ba58746 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-send-carrier.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-send-carrier.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_send_carrier: @@ -11,12 +12,12 @@ Name LIRC_SET_SEND_CARRIER - Set send carrier used to modulate IR TX. - Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_SEND_CARRIER, __u32 *frequency ) - :name: LIRC_SET_SEND_CARRIER +.. c:macro:: LIRC_SET_SEND_CARRIER + +``int ioctl(int fd, LIRC_SET_SEND_CARRIER, __u32 *frequency)`` Arguments ========= @@ -32,7 +33,6 @@ Description Set send carrier used to modulate IR PWM pulses and spaces. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-send-duty-cycle.rst b/Documentation/userspace-api/media/rc/lirc-set-send-duty-cycle.rst index a9074f4fb058..52a072529af9 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-send-duty-cycle.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-send-duty-cycle.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_send_duty_cycle: @@ -15,8 +16,9 @@ IR transmit. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_SEND_DUTY_CYCLE, __u32 *duty_cycle) - :name: LIRC_SET_SEND_DUTY_CYCLE +.. c:macro:: LIRC_SET_SEND_DUTY_CYCLE + +``int ioctl(int fd, LIRC_SET_SEND_DUTY_CYCLE, __u32 *duty_cycle)`` Arguments ========= @@ -28,7 +30,6 @@ Arguments Duty cicle, describing the pulse width in percent (from 1 to 99) of the total cycle. Values 0 and 100 are reserved. - Description =========== @@ -38,7 +39,6 @@ Currently, no special meaning is defined for 0 or 100, but this could be used to switch off carrier generation in the future, so these values should be reserved. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-transmitter-mask.rst b/Documentation/userspace-api/media/rc/lirc-set-transmitter-mask.rst index 1f5527427281..68f4cc2e3ae3 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-transmitter-mask.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-transmitter-mask.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_transmitter_mask: @@ -14,8 +15,9 @@ LIRC_SET_TRANSMITTER_MASK - Enables send codes on a given set of transmitters Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_TRANSMITTER_MASK, __u32 *mask ) - :name: LIRC_SET_TRANSMITTER_MASK +.. c:macro:: LIRC_SET_TRANSMITTER_MASK + +``int ioctl(int fd, LIRC_SET_TRANSMITTER_MASK, __u32 *mask)`` Arguments ========= @@ -26,7 +28,6 @@ Arguments ``mask`` Mask with channels to enable tx. Channel 0 is the least significant bit. - Description =========== @@ -42,7 +43,6 @@ When an invalid bit mask is given, i.e. a bit is set, even though the device does not have so many transitters, then this ioctl returns the number of available transitters and does nothing otherwise. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst b/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst index 2c43b620b3f3..be5321c4a91f 100644 --- a/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst +++ b/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc_set_wideband_receiver: @@ -14,8 +15,9 @@ LIRC_SET_WIDEBAND_RECEIVER - enable wide band receiver. Synopsis ======== -.. c:function:: int ioctl( int fd, LIRC_SET_WIDEBAND_RECEIVER, __u32 *enable ) - :name: LIRC_SET_WIDEBAND_RECEIVER +.. c:macro:: LIRC_SET_WIDEBAND_RECEIVER + +``int ioctl(int fd, LIRC_SET_WIDEBAND_RECEIVER, __u32 *enable)`` Arguments ========= @@ -27,7 +29,6 @@ Arguments enable = 1 means enable wideband receiver, enable = 0 means disable wideband receiver. - Description =========== @@ -47,7 +48,6 @@ reduced range of reception. carrier reports. Trying to disable wide band receiver while carrier reports are active will do nothing. - Return Value ============ diff --git a/Documentation/userspace-api/media/rc/lirc-write.rst b/Documentation/userspace-api/media/rc/lirc-write.rst index 421de2cfa4ca..c1c3230d4fd6 100644 --- a/Documentation/userspace-api/media/rc/lirc-write.rst +++ b/Documentation/userspace-api/media/rc/lirc-write.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC .. _lirc-write: @@ -11,7 +12,6 @@ Name lirc-write - Write to a LIRC device - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t write( int fd, void *buf, size_t count ) - :name: lirc-write Arguments ========= @@ -38,7 +36,7 @@ Arguments Description =========== -:ref:`write() <lirc-write>` writes up to ``count`` bytes to the device +:c:func:`write()` writes up to ``count`` bytes to the device referenced by the file descriptor ``fd`` from the buffer starting at ``buf``. @@ -64,7 +62,6 @@ for the protocol or the scancode is not valid for the specified protocol, ``EINVAL`` is returned. The write function blocks until the scancode is transmitted by the hardware. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/buffer.rst b/Documentation/userspace-api/media/v4l/buffer.rst index 4f95496adc5b..7dbdfbb4a0a9 100644 --- a/Documentation/userspace-api/media/v4l/buffer.rst +++ b/Documentation/userspace-api/media/v4l/buffer.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _buffer: @@ -33,7 +34,6 @@ mem-to-mem devices is an exception to the rule: the timestamp source flags are copied from the OUTPUT video buffer to the CAPTURE video buffer. - Interactions between formats, controls and buffers ================================================== @@ -152,7 +152,6 @@ based on the queried sizes (for instance by allocating a set of buffers large enough for all the desired formats and controls, or by allocating separate set of appropriately sized buffers for each use case). - .. c:type:: v4l2_buffer struct v4l2_buffer @@ -257,7 +256,7 @@ struct v4l2_buffer ``V4L2_MEMORY_MMAP`` this is the offset of the buffer from the start of the device memory. The value is returned by the driver and apart of serving as parameter to the - :ref:`mmap() <func-mmap>` function not useful for applications. + :c:func:`mmap()` function not useful for applications. See :ref:`mmap` for details * - unsigned long - ``userptr`` @@ -310,7 +309,6 @@ struct v4l2_buffer given, then ``EINVAL`` will be returned. - .. c:type:: v4l2_plane struct v4l2_plane @@ -350,7 +348,7 @@ struct v4l2_plane - ``mem_offset`` - When the memory type in the containing struct :c:type:`v4l2_buffer` is ``V4L2_MEMORY_MMAP``, this - is the value that should be passed to :ref:`mmap() <func-mmap>`, + is the value that should be passed to :c:func:`mmap()`, similar to the ``offset`` field in struct :c:type:`v4l2_buffer`. * - unsigned long @@ -384,7 +382,6 @@ struct v4l2_plane applications. - .. c:type:: v4l2_buf_type enum v4l2_buf_type @@ -448,7 +445,6 @@ enum v4l2_buf_type - Buffer for metadata output, see :ref:`metadata`. - .. _buffer-flags: Buffer Flags @@ -682,20 +678,6 @@ Buffer Flags .. _memory-flags: -Memory Consistency Flags -======================== - -.. tabularcolumns:: |p{7.0cm}|p{2.2cm}|p{8.3cm}| - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 3 1 4 - -.. c:type:: v4l2_memory - enum v4l2_memory ================ @@ -720,7 +702,6 @@ enum v4l2_memory - The buffer is used for :ref:`DMA shared buffer <dmabuf>` I/O. - Timecodes ========= @@ -729,7 +710,6 @@ The :c:type:`v4l2_buffer_timecode` structure is designed to hold a (struct :c:type:`timeval` timestamps are stored in the struct :c:type:`v4l2_buffer` ``timestamp`` field.) - .. c:type:: v4l2_timecode struct v4l2_timecode @@ -766,7 +746,6 @@ struct v4l2_timecode - The "user group" bits from the timecode. - .. _timecode-type: Timecode Types @@ -796,7 +775,6 @@ Timecode Types - - .. _timecode-flags: Timecode Flags diff --git a/Documentation/userspace-api/media/v4l/dev-capture.rst b/Documentation/userspace-api/media/v4l/dev-capture.rst index 5ea1ffe71fa6..fe58fd450e2f 100644 --- a/Documentation/userspace-api/media/v4l/dev-capture.rst +++ b/Documentation/userspace-api/media/v4l/dev-capture.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _capture: @@ -19,7 +20,6 @@ device. .. note:: The same device file names are used for video output devices. - Querying Capabilities ===================== @@ -34,7 +34,6 @@ functions they may also support the :ref:`video overlay <overlay>` streaming I/O methods must be supported. Tuners and audio inputs are optional. - Supplemental Functions ====================== @@ -45,7 +44,6 @@ Video capture devices shall support :ref:`audio input <audio>`, :ref:`video input <video>` ioctls must be supported by all video capture devices. - Image Format Negotiation ======================== @@ -55,7 +53,7 @@ capture, the latter how images are stored in memory, i. e. in RGB or YUV format, the number of bits per pixel or width and height. Together they also define how images are scaled in the process. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then reading from it as if it was a plain file. Well written V4L2 applications ensure they really get what they want, including cropping and scaling. @@ -95,7 +93,6 @@ and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC requests and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does. :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is optional. - Reading Images ============== diff --git a/Documentation/userspace-api/media/v4l/dev-output.rst b/Documentation/userspace-api/media/v4l/dev-output.rst index 2315faf61aaf..eadcb4aa813b 100644 --- a/Documentation/userspace-api/media/v4l/dev-output.rst +++ b/Documentation/userspace-api/media/v4l/dev-output.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _output: @@ -18,7 +19,6 @@ device. .. note:: The same device file names are used also for video capture devices. - Querying Capabilities ===================== @@ -32,7 +32,6 @@ functions they may also support the :ref:`raw VBI output <raw-vbi>` streaming I/O methods must be supported. Modulators and audio outputs are optional. - Supplemental Functions ====================== @@ -43,7 +42,6 @@ Video output devices shall support :ref:`audio output <audio>`, :ref:`video output <video>` ioctls must be supported by all video output devices. - Image Format Negotiation ======================== @@ -53,7 +51,7 @@ the latter how images are stored in memory, i. e. in RGB or YUV format, the number of bits per pixel or width and height. Together they also define how images are scaled in the process. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then writing to it as if it was a plain file. Well written V4L2 applications ensure they really get what they want, including cropping and scaling. @@ -92,7 +90,6 @@ and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC requests and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does. :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is optional. - Writing Images ============== diff --git a/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst b/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst index bb52f85a619c..3f43a01ba938 100644 --- a/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst +++ b/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _raw-vbi: @@ -32,7 +33,6 @@ applications must call the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. Accessed as ``/dev/vbi``, raw VBI capturing or output is the default device function. - Querying Capabilities ===================== @@ -44,7 +44,6 @@ in the ``capabilities`` field of struct read/write, streaming or asynchronous I/O methods must be supported. VBI devices may or may not have a tuner or modulator. - Supplemental Functions ====================== @@ -53,7 +52,6 @@ VBI devices shall support :ref:`video input or output <video>`, ioctls as needed. The :ref:`video standard <standard>` ioctls provide information vital to program a VBI device, therefore must be supported. - Raw VBI Format Negotiation ========================== @@ -62,7 +60,7 @@ frequency. To properly interpret the data V4L2 specifies an ioctl to query the sampling parameters. Moreover, to allow for some flexibility applications can also suggest different parameters. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then reading from it as if it was a plain file. Well written V4L2 applications should always ensure they really get what they want, requesting reasonable @@ -91,8 +89,8 @@ happen for instance when the video and VBI areas to capture would overlap, or when the driver supports multiple opens and another process already requested VBI capturing or output. Anyway, applications must expect other resource allocation points which may return ``EBUSY``, at the -:ref:`VIDIOC_STREAMON` ioctl and the first :ref:`read() <func-read>` -, :ref:`write() <func-write>` and :ref:`select() <func-select>` calls. +:ref:`VIDIOC_STREAMON` ioctl and the first :c:func:`read()` +, :c:func:`write()` and :c:func:`select()` calls. VBI devices must implement both the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ignores all requests @@ -182,7 +180,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does - This array is reserved for future extensions. Drivers and applications must set it to zero. - .. tabularcolumns:: |p{4.4cm}|p{1.5cm}|p{11.6cm}| .. _vbifmt-flags: @@ -218,7 +215,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does non-zero. - .. _vbi-hsync: .. kernel-figure:: vbi_hsync.svg @@ -227,7 +223,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does **Figure 4.1. Line synchronization** - .. _vbi-525: .. kernel-figure:: vbi_525.svg @@ -251,7 +246,6 @@ negotiation, or after switching the video standard which may invalidate the negotiated VBI parameters, should be refused by the driver. A format change during active I/O is not permitted. - Reading and writing VBI images ============================== @@ -261,7 +255,6 @@ consisting of two fields of VBI images immediately following in memory. The total size of a frame computes as follows: - .. code-block:: c (count[0] + count[1]) * samples_per_line * sample size in bytes @@ -276,8 +269,8 @@ The latter bears the possibility of synchronizing video and VBI data by using buffer timestamps. Remember the :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` ioctl and the -first :ref:`read() <func-read>`, :ref:`write() <func-write>` and -:ref:`select() <func-select>` call can be resource allocation +first :c:func:`read()`, :c:func:`write()` and +:c:func:`select()` call can be resource allocation points returning an ``EBUSY`` error code if the required hardware resources are temporarily unavailable, for example the device is already in use by another process. diff --git a/Documentation/userspace-api/media/v4l/dev-rds.rst b/Documentation/userspace-api/media/v4l/dev-rds.rst index 463726ba46d7..207216d5e6a5 100644 --- a/Documentation/userspace-api/media/v4l/dev-rds.rst +++ b/Documentation/userspace-api/media/v4l/dev-rds.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _rds: @@ -28,7 +29,6 @@ The RDS interface does not support this format. Should support for MMBS the linux-media mailing list: `https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__. - Querying Capabilities ===================== @@ -68,31 +68,27 @@ like program identification codes and radio text, the flag :ref:`Writing RDS data <writing-rds-data>` and :ref:`FM Transmitter Control Reference <fm-tx-controls>`. - .. _reading-rds-data: Reading RDS data ================ RDS data can be read from the radio device with the -:ref:`read() <func-read>` function. The data is packed in groups of +:c:func:`read()` function. The data is packed in groups of three bytes. - .. _writing-rds-data: Writing RDS data ================ RDS data can be written to the radio device with the -:ref:`write() <func-write>` function. The data is packed in groups of +:c:func:`write()` function. The data is packed in groups of three bytes, as follows: - RDS datastructures ================== - .. c:type:: v4l2_rds_data .. tabularcolumns:: |p{2.5cm}|p{2.5cm}|p{12.5cm}| @@ -113,7 +109,6 @@ RDS datastructures - Block description - .. _v4l2-rds-block: .. tabularcolumns:: |p{2.9cm}|p{14.6cm}| @@ -136,7 +131,6 @@ RDS datastructures reception of this block. - .. _v4l2-rds-block-codes: .. tabularcolumns:: |p{6.4cm}|p{2.0cm}|p{1.2cm}|p{7.9cm}| diff --git a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst index 807751f305fb..f0df144c9f63 100644 --- a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst +++ b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _sliced: @@ -27,7 +28,6 @@ however the default function here is video capturing or output. Different file descriptors must be used to pass raw and sliced VBI data simultaneously, if this is supported by the driver. - Querying Capabilities ===================== @@ -39,7 +39,6 @@ respectively, in the ``capabilities`` field of struct read/write, streaming or asynchronous :ref:`I/O methods <io>` must be supported. Sliced VBI devices may have a tuner or modulator. - Supplemental Functions ====================== @@ -49,7 +48,6 @@ capabilities, and they may support :ref:`control` ioctls. The :ref:`video standard <standard>` ioctls provide information vital to program a sliced VBI device, therefore must be supported. - .. _sliced-vbi-format-negotitation: Sliced VBI Format Negotiation @@ -96,9 +94,8 @@ at this point, it may return an ``EBUSY`` error code if the required resources are temporarily unavailable. Other resource allocation points which may return ``EBUSY`` can be the :ref:`VIDIOC_STREAMON` ioctl and the first -:ref:`read() <func-read>`, :ref:`write() <func-write>` and -:ref:`select() <func-select>` call. - +:c:func:`read()`, :c:func:`write()` and +:c:func:`select()` call. .. c:type:: v4l2_sliced_vbi_format @@ -191,7 +188,7 @@ struct v4l2_sliced_vbi_format * - __u32 - ``io_size`` - :cspan:`2` Maximum number of bytes passed by one - :ref:`read() <func-read>` or :ref:`write() <func-write>` call, + :c:func:`read()` or :c:func:`write()` call, and the buffer size in bytes for the :ref:`VIDIOC_QBUF` and :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. Drivers set this field @@ -274,7 +271,6 @@ Sliced VBI services \normalsize - Drivers may return an ``EINVAL`` error code when applications attempt to read or write data without prior format negotiation, after switching the video standard (which may invalidate the negotiated VBI parameters) and @@ -284,13 +280,12 @@ return an ``EBUSY`` error code when applications attempt to change the format while i/o is in progress (between a :ref:`VIDIOC_STREAMON` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call, and after the first -:ref:`read() <func-read>` or :ref:`write() <func-write>` call). - +:c:func:`read()` or :c:func:`write()` call). Reading and writing sliced VBI data =================================== -A single :ref:`read() <func-read>` or :ref:`write() <func-write>` +A single :c:func:`read()` or :c:func:`write()` call must pass all data belonging to one video frame. That is an array of struct :c:type:`v4l2_sliced_vbi_data` structures with one or more elements and a total size not exceeding ``io_size`` bytes. Likewise @@ -298,7 +293,6 @@ in streaming I/O mode one buffer of ``io_size`` bytes must contain data of one video frame. The ``id`` of unused struct :c:type:`v4l2_sliced_vbi_data` elements must be zero. - .. c:type:: v4l2_sliced_vbi_data struct v4l2_sliced_vbi_data @@ -344,9 +338,8 @@ struct v4l2_sliced_vbi_data bytes at the end of this array are undefined, drivers and applications shall ignore them. - Packets are always passed in ascending line number order, without -duplicate line numbers. The :ref:`write() <func-write>` function and +duplicate line numbers. The :c:func:`write()` function and the :ref:`VIDIOC_QBUF` ioctl must return an ``EINVAL`` error code when applications violate this rule. They must also return an EINVAL error code when applications pass an incorrect field or line @@ -370,7 +363,6 @@ streaming (:ref:`memory mapping <mmap>` and/or :ref:`user pointer <userp>`) I/O. The latter bears the possibility of synchronizing video and VBI data by using buffer timestamps. - Sliced VBI Data in MPEG Streams =============================== @@ -405,7 +397,6 @@ data insertion is not supported by the device. The following subsections specify the format of the embedded sliced VBI data. - MPEG Stream Embedded, Sliced VBI Data Format: NONE -------------------------------------------------- @@ -417,7 +408,6 @@ nor driver shall insert "empty" embedded sliced VBI data packets in the MPEG stream when this format is set. No MPEG stream data structures are specified for this format. - MPEG Stream Embedded, Sliced VBI Data Format: IVTV -------------------------------------------------- @@ -460,7 +450,6 @@ the end with unspecified fill bytes to align the end of the payload to a with 18 lines/field with 43 bytes of data/line and a 4 byte magic number). - .. c:type:: v4l2_mpeg_vbi_fmt_ivtv struct v4l2_mpeg_vbi_fmt_ivtv @@ -523,7 +512,6 @@ Magic Constants for struct v4l2_mpeg_vbi_fmt_ivtv magic field valid and that 36 lines of sliced VBI data are present. - .. c:type:: v4l2_mpeg_vbi_itv0 .. c:type:: v4l2_mpeg_vbi_ITV0 @@ -548,7 +536,6 @@ structs v4l2_mpeg_vbi_itv0 and v4l2_mpeg_vbi_ITV0 value: - :: linemask[0] b0: line 6 first field @@ -574,7 +561,6 @@ structs v4l2_mpeg_vbi_itv0 and v4l2_mpeg_vbi_ITV0 applications. - .. _v4l2-mpeg-vbi-itv0-1: struct v4l2_mpeg_vbi_ITV0 @@ -596,7 +582,6 @@ struct v4l2_mpeg_vbi_ITV0 lines 6 through 23 of the second field. - .. c:type:: v4l2_mpeg_vbi_itv0_line struct v4l2_mpeg_vbi_itv0_line @@ -619,7 +604,6 @@ struct v4l2_mpeg_vbi_itv0_line - The sliced VBI data for the line. - .. _ITV0-Line-Identifier-Constants: Line Identifiers for struct v4l2_mpeg_vbi_itv0_line id field @@ -653,7 +637,6 @@ Line Identifiers for struct v4l2_mpeg_vbi_itv0_line id field description of the line payload. - .. [#f1] According to :ref:`ETS 300 706 <ets300706>` lines 6-22 of the first field and lines 5-22 of the second field may carry Teletext data. diff --git a/Documentation/userspace-api/media/v4l/diff-v4l.rst b/Documentation/userspace-api/media/v4l/diff-v4l.rst index 3f7bac44377c..caa05fbbd396 100644 --- a/Documentation/userspace-api/media/v4l/diff-v4l.rst +++ b/Documentation/userspace-api/media/v4l/diff-v4l.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _diff-v4l: @@ -13,7 +14,6 @@ the much improved V4L2 API replaces the V4L API. The support for the old V4L calls were removed from Kernel, but the library :ref:`libv4l` supports the conversion of a V4L API system call into a V4L2 one. - Opening and Closing Devices =========================== @@ -32,7 +32,6 @@ recommend that V4L2 drivers by default register devices with the same numbers, but the system administrator can assign arbitrary minor numbers using driver module options. The major device number remains 81. - .. _v4l-dev: .. flat-table:: V4L Device Types, Names and Numbers @@ -53,14 +52,12 @@ using driver module options. The major device number remains 81. - ``/dev/vbi``, ``/dev/vbi0`` to ``/dev/vbi31`` - 224-255 - V4L prohibits (or used to prohibit) multiple opens of a device file. V4L2 drivers *may* support multiple opens, see :ref:`open` for details and consequences. V4L drivers respond to V4L2 ioctls with an ``EINVAL`` error code. - Querying Capabilities ===================== @@ -151,7 +148,6 @@ introduction. - ``-`` - See above. - The ``audios`` field was replaced by ``capabilities`` flag ``V4L2_CAP_AUDIO``, indicating *if* the device has any audio inputs or outputs. To determine their number applications can enumerate audio @@ -164,7 +160,6 @@ were removed. Calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` or dimensions returns the closest size possible, taking into account the current video standard, cropping and scaling limitations. - Video Sources ============= @@ -180,7 +175,6 @@ The ``channel`` field counting inputs was renamed to ``index``, the video input types were renamed as follows: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -192,7 +186,6 @@ video input types were renamed as follows: * - ``VIDEO_TYPE_CAMERA`` - ``V4L2_INPUT_TYPE_CAMERA`` - Unlike the ``tuners`` field expressing the number of tuners of this input, V4L2 assumes each video input is connected to at most one tuner. However a tuner can have more than one input, i. e. RF connectors, and a @@ -216,7 +209,6 @@ addition together with the ``norm`` field and has been removed in the meantime. V4L2 has a similar, albeit more comprehensive approach to video standards, see :ref:`standard` for more information. - Tuning ====== @@ -260,7 +252,6 @@ frequency where renamed to to a struct :c:type:`v4l2_frequency` instead of an unsigned long integer. - .. _v4l-image-properties: Image Properties @@ -274,7 +265,6 @@ replaced by V4L2 controls accessible with the :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` ioctls: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -292,7 +282,6 @@ replaced by V4L2 controls accessible with the * - ``whiteness`` - ``V4L2_CID_WHITENESS`` - The V4L picture controls are assumed to range from 0 to 65535 with no particular reset value. The V4L2 API permits arbitrary limits and defaults which can be queried with the @@ -306,7 +295,6 @@ of the image depth and others need not know. The ``palette`` field moved into the struct :c:type:`v4l2_pix_format`: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -346,11 +334,9 @@ into the struct :c:type:`v4l2_pix_format`: * - ``VIDEO_PALETTE_YUV410P`` - :ref:`V4L2_PIX_FMT_YVU410 <V4L2-PIX-FMT-YVU410>` - V4L2 image formats are defined in :ref:`pixfmt`. The image format can be selected with the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. - Audio ===== @@ -384,7 +370,6 @@ The following fields where replaced by V4L2 controls accessible with the :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` ioctls: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -400,7 +385,6 @@ The following fields where replaced by V4L2 controls accessible with the * - ``balance`` - ``V4L2_CID_AUDIO_BALANCE`` - To determine which of these controls are supported by a driver V4L provides the ``flags`` ``VIDEO_AUDIO_VOLUME``, ``VIDEO_AUDIO_BASS``, ``VIDEO_AUDIO_TREBLE`` and ``VIDEO_AUDIO_BALANCE``. In the V4L2 API the @@ -416,7 +400,6 @@ V4L2 API permits arbitrary limits and defaults which can be queried with the :ref:`VIDIOC_QUERYCTRL` ioctl. For general information about controls see :ref:`control`. - Frame Buffer Overlay ==================== @@ -463,7 +446,6 @@ size is determined by ``w.width`` and ``w.height``. The ``VIDIOCCAPTURE`` ioctl to enable or disable overlay was renamed to :ref:`VIDIOC_OVERLAY`. - Cropping ======== @@ -490,21 +472,19 @@ struct :c:type:`v4l2_window`. These structures are used to select a capture or overlay format with the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. - Reading Images, Memory Mapping ============================== - Capturing using the read method ------------------------------- There is no essential difference between reading images from a V4L or -V4L2 device using the :ref:`read() <func-read>` function, however V4L2 +V4L2 device using the :c:func:`read()` function, however V4L2 drivers are not required to support this I/O method. Applications can determine if the function is available with the :ref:`VIDIOC_QUERYCAP` ioctl. All V4L2 devices exchanging data with applications must support the -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` +:c:func:`select()` and :c:func:`poll()` functions. To select an image format and size, V4L provides the ``VIDIOCSPICT`` and @@ -517,7 +497,6 @@ negotiation ioctls :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and For more information about the V4L2 read interface see :ref:`rw`. - Capturing using memory mapping ------------------------------ @@ -528,7 +507,6 @@ read method. V4L2 supports memory mapping as well, with a few differences. - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -550,7 +528,7 @@ differences. ``VIDIOCGMBUF`` ioctl is available to query the number of buffers, the offset of each buffer from the start of the virtual file, and the overall amount of memory used, which can be used as arguments - for the :ref:`mmap() <func-mmap>` function. + for the :c:func:`mmap()` function. - Buffers are individually mapped. The offset and size of each buffer can be determined with the :ref:`VIDIOC_QUERYBUF` ioctl. @@ -568,7 +546,7 @@ differences. the incoming queue. Filled buffers are dequeued from the outgoing queue with the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. To wait until filled buffers become available this function, - :ref:`select() <func-select>` or :ref:`poll() <func-poll>` can + :c:func:`select()` or :c:func:`poll()` can be used. The :ref:`VIDIOC_STREAMON` ioctl must be called once after enqueuing one or more buffers to start capturing. Its counterpart @@ -577,11 +555,9 @@ differences. signal status, if known, with the :ref:`VIDIOC_ENUMINPUT` ioctl. - For a more in-depth discussion of memory mapping and examples, see :ref:`mmap`. - Reading Raw VBI Data ==================== @@ -592,7 +568,6 @@ the V4L VBI interface. Reading from the device yields a raw VBI image with the following parameters: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -616,7 +591,6 @@ with the following parameters: * - flags - 0 - Undocumented in the V4L specification, in Linux 2.3 the ``VIDIOCGVBIFMT`` and ``VIDIOCSVBIFMT`` ioctls using struct ``vbi_format`` were added to determine the VBI image @@ -630,11 +604,10 @@ remaining fields are probably equivalent to struct Apparently only the Zoran (ZR 36120) driver implements these ioctls. The semantics differ from those specified for V4L2 in two ways. The -parameters are reset on :ref:`open() <func-open>` and +parameters are reset on :c:func:`open()` and ``VIDIOCSVBIFMT`` always returns an ``EINVAL`` error code if the parameters are invalid. - Miscellaneous ============= diff --git a/Documentation/userspace-api/media/v4l/dmabuf.rst b/Documentation/userspace-api/media/v4l/dmabuf.rst index f43d400dafaa..50fba11c2477 100644 --- a/Documentation/userspace-api/media/v4l/dmabuf.rst +++ b/Documentation/userspace-api/media/v4l/dmabuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _dmabuf: @@ -36,7 +37,6 @@ are passed in struct :c:type:`v4l2_buffer` (or in struct driver must be switched into DMABUF I/O mode by calling the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>` with the desired buffer type. - Example: Initiating streaming I/O with DMABUF file descriptors ============================================================== @@ -135,10 +135,10 @@ buffers it must wait until an empty buffer can be dequeued and reused. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the -``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` function, +``O_NONBLOCK`` flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` error code when no buffer is available. The -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` +:c:func:`select()` and :c:func:`poll()` functions are always available. To start and stop capturing or displaying applications call the @@ -158,5 +158,5 @@ Drivers implementing DMABUF importing I/O must support the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, -and the :ref:`select() <func-select>` and :ref:`poll() <func-poll>` +and the :c:func:`select()` and :c:func:`poll()` functions. diff --git a/Documentation/userspace-api/media/v4l/format.rst b/Documentation/userspace-api/media/v4l/format.rst index eaa6445f6160..35bbb2fea46e 100644 --- a/Documentation/userspace-api/media/v4l/format.rst +++ b/Documentation/userspace-api/media/v4l/format.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _format: @@ -6,7 +7,6 @@ Data Formats ************ - Data Format Negotiation ======================= @@ -53,8 +53,8 @@ image size. When applications omit the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl its locking side effects are implied by the next step, the selection of an I/O method with the :ref:`VIDIOC_REQBUFS` ioctl or implicit -with the first :ref:`read() <func-read>` or -:ref:`write() <func-write>` call. +with the first :c:func:`read()` or +:c:func:`write()` call. Generally only one logical stream can be assigned to a file descriptor, the exception being drivers permitting simultaneous video capturing and @@ -67,7 +67,6 @@ All drivers exchanging data with applications must support the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. Implementation of the :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is highly recommended but optional. - Image Format Enumeration ======================== diff --git a/Documentation/userspace-api/media/v4l/func-close.rst b/Documentation/userspace-api/media/v4l/func-close.rst index c03ff3e62738..dba3263fd1b9 100644 --- a/Documentation/userspace-api/media/v4l/func-close.rst +++ b/Documentation/userspace-api/media/v4l/func-close.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-close: @@ -11,7 +12,6 @@ Name v4l2-close - Close a V4L2 device - Synopsis ======== @@ -19,16 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: v4l2-close Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -38,7 +35,6 @@ associated with the file descriptor are freed. However data format parameters, current input or output, control values or other properties remain unchanged. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/func-ioctl.rst b/Documentation/userspace-api/media/v4l/func-ioctl.rst index 8bde6b4f1cb5..f3b005094334 100644 --- a/Documentation/userspace-api/media/v4l/func-ioctl.rst +++ b/Documentation/userspace-api/media/v4l/func-ioctl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-ioctl: @@ -11,7 +12,6 @@ Name v4l2-ioctl - Program a V4L2 device - Synopsis ======== @@ -19,15 +19,13 @@ Synopsis #include <sys/ioctl.h> - -.. c:function:: int ioctl( int fd, int request, void *argp ) - :name: v4l2-ioctl +``int ioctl(int fd, int request, void *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``request`` V4L2 ioctl request code as defined in the ``videodev2.h`` header @@ -36,7 +34,6 @@ Arguments ``argp`` Pointer to a function parameter, usually a structure. - Description =========== @@ -50,7 +47,6 @@ include the version in the kernel sources on the system they compile on. All V4L2 ioctl requests, their respective function and parameters are specified in :ref:`user-func`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/func-mmap.rst b/Documentation/userspace-api/media/v4l/func-mmap.rst index b3a9cd862a7f..e3e5e64ebe7e 100644 --- a/Documentation/userspace-api/media/v4l/func-mmap.rst +++ b/Documentation/userspace-api/media/v4l/func-mmap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-mmap: @@ -11,7 +12,6 @@ Name v4l2-mmap - Map device memory into application address space - Synopsis ======== @@ -20,9 +20,7 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: void *mmap( void *start, size_t length, int prot, int flags, int fd, off_t offset ) - :name: v4l2-mmap Arguments ========= @@ -54,7 +52,7 @@ Arguments #. The Linux ``videobuf`` kernel module, which is used by some drivers supports only ``PROT_READ`` | ``PROT_WRITE``. When the driver does not support the desired protection, the - :ref:`mmap() <func-mmap>` function fails. + :c:func:`mmap()` function fails. #. Device memory accesses (e. g. the memory on a graphics card with video capturing hardware) may incur a performance penalty @@ -70,7 +68,7 @@ Arguments ``MAP_FIXED`` requests that the driver selects no other address than the one specified. If the specified address cannot be used, - :ref:`mmap() <func-mmap>` will fail. If ``MAP_FIXED`` is specified, + :c:func:`mmap()` will fail. If ``MAP_FIXED`` is specified, ``start`` must be a multiple of the pagesize. Use of this option is discouraged. @@ -87,7 +85,7 @@ Arguments flags. ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``offset`` Offset of the buffer in device memory. This must be the same value @@ -97,11 +95,10 @@ Arguments in the struct :c:type:`v4l2_plane` ``m`` union ``mem_offset`` field for the multi-planar API. - Description =========== -The :ref:`mmap() <func-mmap>` function asks to map ``length`` bytes starting at +The :c:func:`mmap()` function asks to map ``length`` bytes starting at ``offset`` in the memory of the device specified by ``fd`` into the application address space, preferably at address ``start``. This latter address is a hint only, and is usually specified as 0. @@ -111,13 +108,12 @@ Suitable length and offset parameters are queried with the allocated with the :ref:`VIDIOC_REQBUFS` ioctl before they can be queried. -To unmap buffers the :ref:`munmap() <func-munmap>` function is used. - +To unmap buffers the :c:func:`munmap()` function is used. Return Value ============ -On success :ref:`mmap() <func-mmap>` returns a pointer to the mapped buffer. On +On success :c:func:`mmap()` returns a pointer to the mapped buffer. On error ``MAP_FAILED`` (-1) is returned, and the ``errno`` variable is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/v4l/func-munmap.rst b/Documentation/userspace-api/media/v4l/func-munmap.rst index e8a27e43373a..077d58333904 100644 --- a/Documentation/userspace-api/media/v4l/func-munmap.rst +++ b/Documentation/userspace-api/media/v4l/func-munmap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-munmap: @@ -11,7 +12,6 @@ Name v4l2-munmap - Unmap device memory - Synopsis ======== @@ -20,37 +20,33 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: int munmap( void *start, size_t length ) - :name: v4l2-munmap Arguments ========= ``start`` Address of the mapped buffer as returned by the - :ref:`mmap() <func-mmap>` function. + :c:func:`mmap()` function. ``length`` Length of the mapped buffer. This must be the same value as given to - :ref:`mmap() <func-mmap>` and returned by the driver in the struct + :c:func:`mmap()` and returned by the driver in the struct :c:type:`v4l2_buffer` ``length`` field for the single-planar API and in the struct :c:type:`v4l2_plane` ``length`` field for the multi-planar API. - Description =========== -Unmaps a previously with the :ref:`mmap() <func-mmap>` function mapped +Unmaps a previously with the :c:func:`mmap()` function mapped buffer and frees it, if possible. - Return Value ============ -On success :ref:`munmap() <func-munmap>` returns 0, on failure -1 and the +On success :c:func:`munmap()` returns 0, on failure -1 and the ``errno`` variable is set appropriately: EINVAL diff --git a/Documentation/userspace-api/media/v4l/func-open.rst b/Documentation/userspace-api/media/v4l/func-open.rst index f3890d284918..ba23ff1e45dd 100644 --- a/Documentation/userspace-api/media/v4l/func-open.rst +++ b/Documentation/userspace-api/media/v4l/func-open.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-open: @@ -11,7 +12,6 @@ Name v4l2-open - Open a V4L2 device - Synopsis ======== @@ -19,9 +19,7 @@ Synopsis #include <fcntl.h> - .. c:function:: int open( const char *device_name, int flags ) - :name: v4l2-open Arguments ========= @@ -34,7 +32,7 @@ Arguments technicality, input devices still support only reading and output devices only writing. - When the ``O_NONBLOCK`` flag is given, the :ref:`read() <func-read>` + When the ``O_NONBLOCK`` flag is given, the :c:func:`read()` function and the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl will return the ``EAGAIN`` error code when no data is available or no buffer is in the driver outgoing queue, otherwise these functions @@ -43,22 +41,20 @@ Arguments Other flags have no effect. - Description =========== -To open a V4L2 device applications call :ref:`open() <func-open>` with the +To open a V4L2 device applications call :c:func:`open()` with the desired device name. This function has no side effects; all data format parameters, current input or output, control values or other properties -remain unchanged. At the first :ref:`open() <func-open>` call after loading the +remain unchanged. At the first :c:func:`open()` call after loading the driver they will be reset to default values, drivers are never in an undefined state. - Return Value ============ -On success :ref:`open() <func-open>` returns the new file descriptor. On error +On success :c:func:`open()` returns the new file descriptor. On error -1 is returned, and the ``errno`` variable is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/v4l/func-poll.rst b/Documentation/userspace-api/media/v4l/func-poll.rst index 95cf9c6fedcd..cbf4a0a10ae2 100644 --- a/Documentation/userspace-api/media/v4l/func-poll.rst +++ b/Documentation/userspace-api/media/v4l/func-poll.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-poll: @@ -11,7 +12,6 @@ Name v4l2-poll - Wait for some event on a file descriptor - Synopsis ======== @@ -19,19 +19,16 @@ Synopsis #include <sys/poll.h> - .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout ) - :name: v4l2-poll Arguments ========= - Description =========== -With the :ref:`poll() <func-poll>` function applications can suspend execution +With the :c:func:`poll()` function applications can suspend execution until the driver has captured data or is ready to accept data for output. @@ -44,57 +41,56 @@ display. When buffers are already in the outgoing queue of the driver (capture) or the incoming queue isn't full (display) the function returns immediately. -On success :ref:`poll() <func-poll>` returns the number of file descriptors +On success :c:func:`poll()` returns the number of file descriptors that have been selected (that is, file descriptors for which the -``revents`` field of the respective :c:func:`struct pollfd` structure +``revents`` field of the respective ``struct pollfd`` structure is non-zero). Capture devices set the ``POLLIN`` and ``POLLRDNORM`` flags in the ``revents`` field, output devices the ``POLLOUT`` and ``POLLWRNORM`` flags. When the function timed out it returns a value of zero, on failure it returns -1 and the ``errno`` variable is set appropriately. When the application did not call -:ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` the :ref:`poll() <func-poll>` +:ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` the :c:func:`poll()` function succeeds, but sets the ``POLLERR`` flag in the ``revents`` field. When the application has called :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` for a capture device but hasn't yet called :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, the -:ref:`poll() <func-poll>` function succeeds and sets the ``POLLERR`` flag in +:c:func:`poll()` function succeeds and sets the ``POLLERR`` flag in the ``revents`` field. For output devices this same situation will cause -:ref:`poll() <func-poll>` to succeed as well, but it sets the ``POLLOUT`` and +:c:func:`poll()` to succeed as well, but it sets the ``POLLOUT`` and ``POLLWRNORM`` flags in the ``revents`` field. If an event occurred (see :ref:`VIDIOC_DQEVENT`) then ``POLLPRI`` will be set in the ``revents`` field and -:ref:`poll() <func-poll>` will return. +:c:func:`poll()` will return. -When use of the :ref:`read() <func-read>` function has been negotiated and the -driver does not capture yet, the :ref:`poll() <func-poll>` function starts +When use of the :c:func:`read()` function has been negotiated and the +driver does not capture yet, the :c:func:`poll()` function starts capturing. When that fails it returns a ``POLLERR`` as above. Otherwise it waits until data has been captured and can be read. When the driver captures continuously (as opposed to, for example, still images) the function may return immediately. -When use of the :ref:`write() <func-write>` function has been negotiated and the -driver does not stream yet, the :ref:`poll() <func-poll>` function starts +When use of the :c:func:`write()` function has been negotiated and the +driver does not stream yet, the :c:func:`poll()` function starts streaming. When that fails it returns a ``POLLERR`` as above. Otherwise it waits until the driver is ready for a non-blocking -:ref:`write() <func-write>` call. +:c:func:`write()` call. If the caller is only interested in events (just ``POLLPRI`` is set in -the ``events`` field), then :ref:`poll() <func-poll>` will *not* start +the ``events`` field), then :c:func:`poll()` will *not* start streaming if the driver does not stream yet. This makes it possible to just poll for events and not for buffers. -All drivers implementing the :ref:`read() <func-read>` or :ref:`write() <func-write>` -function or streaming I/O must also support the :ref:`poll() <func-poll>` +All drivers implementing the :c:func:`read()` or :c:func:`write()` +function or streaming I/O must also support the :c:func:`poll()` function. -For more details see the :ref:`poll() <func-poll>` manual page. - +For more details see the :c:func:`poll()` manual page. Return Value ============ -On success, :ref:`poll() <func-poll>` returns the number structures which have +On success, :c:func:`poll()` returns the number structures which have non-zero ``revents`` fields, or zero if the call timed out. On error -1 is returned, and the ``errno`` variable is set appropriately: diff --git a/Documentation/userspace-api/media/v4l/func-read.rst b/Documentation/userspace-api/media/v4l/func-read.rst index 56b255c595e1..e6f6ac4bed77 100644 --- a/Documentation/userspace-api/media/v4l/func-read.rst +++ b/Documentation/userspace-api/media/v4l/func-read.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-read: @@ -11,7 +12,6 @@ Name v4l2-read - Read from a V4L2 device - Synopsis ======== @@ -19,15 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t read( int fd, void *buf, size_t count ) - :name: v4l2-read Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``buf`` Buffer to be filled @@ -38,48 +36,48 @@ Arguments Description =========== -:ref:`read() <func-read>` attempts to read up to ``count`` bytes from file +:c:func:`read()` attempts to read up to ``count`` bytes from file descriptor ``fd`` into the buffer starting at ``buf``. The layout of the data in the buffer is discussed in the respective device interface -section, see ##. If ``count`` is zero, :ref:`read() <func-read>` returns zero +section, see ##. If ``count`` is zero, :c:func:`read()` returns zero and has no other results. If ``count`` is greater than ``SSIZE_MAX``, the result is unspecified. Regardless of the ``count`` value each -:ref:`read() <func-read>` call will provide at most one frame (two fields) +:c:func:`read()` call will provide at most one frame (two fields) worth of data. -By default :ref:`read() <func-read>` blocks until data becomes available. When -the ``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` +By default :c:func:`read()` blocks until data becomes available. When +the ``O_NONBLOCK`` flag was given to the :c:func:`open()` function it returns immediately with an ``EAGAIN`` error code when no data -is available. The :ref:`select() <func-select>` or -:ref:`poll() <func-poll>` functions can always be used to suspend +is available. The :c:func:`select()` or +:c:func:`poll()` functions can always be used to suspend execution until data becomes available. All drivers supporting the -:ref:`read() <func-read>` function must also support :ref:`select() <func-select>` and -:ref:`poll() <func-poll>`. +:c:func:`read()` function must also support :c:func:`select()` and +:c:func:`poll()`. Drivers can implement read functionality in different ways, using a single or multiple buffers and discarding the oldest or newest frames once the internal buffers are filled. -:ref:`read() <func-read>` never returns a "snapshot" of a buffer being filled. +:c:func:`read()` never returns a "snapshot" of a buffer being filled. Using a single buffer the driver will stop capturing when the application starts reading the buffer until the read is finished. Thus only the period of the vertical blanking interval is available for reading, or the capture rate must fall below the nominal frame rate of the video standard. -The behavior of :ref:`read() <func-read>` when called during the active picture +The behavior of :c:func:`read()` when called during the active picture period or the vertical blanking separating the top and bottom field depends on the discarding policy. A driver discarding the oldest frames keeps capturing into an internal buffer, continuously overwriting the previously, not read frame, and returns the frame being received at the -time of the :ref:`read() <func-read>` call as soon as it is complete. +time of the :c:func:`read()` call as soon as it is complete. A driver discarding the newest frames stops capturing until the next -:ref:`read() <func-read>` call. The frame being received at :ref:`read() <func-read>` +:c:func:`read()` call. The frame being received at :c:func:`read()` time is discarded, returning the following frame instead. Again this implies a reduction of the capture rate to one half or less of the nominal frame rate. An example of this model is the video read mode of -the bttv driver, initiating a DMA to user memory when :ref:`read() <func-read>` +the bttv driver, initiating a DMA to user memory when :c:func:`read()` is called and returning when the DMA finished. In the multiple buffer model drivers maintain a ring of internal @@ -94,14 +92,13 @@ the driver with the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and however. The discarding policy is not reported and cannot be changed. For minimum requirements see :ref:`devices`. - Return Value ============ On success, the number of bytes read is returned. It is not an error if this number is smaller than the number of bytes requested, or the amount of data required for one frame. This may happen for example because -:ref:`read() <func-read>` was interrupted by a signal. On error, -1 is +:c:func:`read()` was interrupted by a signal. On error, -1 is returned, and the ``errno`` variable is set appropriately. In this case the next read will start at the beginning of a new frame. Possible error codes are: @@ -129,5 +126,5 @@ EIO communicate with a remote device (USB camera etc.). EINVAL - The :ref:`read() <func-read>` function is not supported by this driver, not + The :c:func:`read()` function is not supported by this driver, not on this device, or generally not on this type of device. diff --git a/Documentation/userspace-api/media/v4l/func-select.rst b/Documentation/userspace-api/media/v4l/func-select.rst index 6715d5efcc27..ba1879c728f0 100644 --- a/Documentation/userspace-api/media/v4l/func-select.rst +++ b/Documentation/userspace-api/media/v4l/func-select.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-select: @@ -11,7 +12,6 @@ Name v4l2-select - Synchronous I/O multiplexing - Synopsis ======== @@ -21,9 +21,7 @@ Synopsis #include <sys/types.h> #include <unistd.h> - .. c:function:: int select( int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout ) - :name: v4l2-select Arguments ========= @@ -43,11 +41,10 @@ Arguments ``timeout`` Maximum time to wait. - Description =========== -With the :ref:`select() <func-select>` function applications can suspend +With the :c:func:`select()` function applications can suspend execution until the driver has captured data or is ready to accept data for output. @@ -56,40 +53,39 @@ buffer has been filled or displayed and can be dequeued with the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. When buffers are already in the outgoing queue of the driver the function returns immediately. -On success :ref:`select() <func-select>` returns the total number of bits set in -:c:func:`struct fd_set`. When the function timed out it returns +On success :c:func:`select()` returns the total number of bits set in +``fd_set``. When the function timed out it returns a value of zero. On failure it returns -1 and the ``errno`` variable is set appropriately. When the application did not call :ref:`VIDIOC_QBUF` or -:ref:`VIDIOC_STREAMON` yet the :ref:`select() <func-select>` +:ref:`VIDIOC_STREAMON` yet the :c:func:`select()` function succeeds, setting the bit of the file descriptor in ``readfds`` or ``writefds``, but subsequent :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` calls will fail. [#f1]_ -When use of the :ref:`read() <func-read>` function has been negotiated and the -driver does not capture yet, the :ref:`select() <func-select>` function starts -capturing. When that fails, :ref:`select() <func-select>` returns successful and -a subsequent :ref:`read() <func-read>` call, which also attempts to start +When use of the :c:func:`read()` function has been negotiated and the +driver does not capture yet, the :c:func:`select()` function starts +capturing. When that fails, :c:func:`select()` returns successful and +a subsequent :c:func:`read()` call, which also attempts to start capturing, will return an appropriate error code. When the driver captures continuously (as opposed to, for example, still images) and -data is already available the :ref:`select() <func-select>` function returns +data is already available the :c:func:`select()` function returns immediately. -When use of the :ref:`write() <func-write>` function has been negotiated the -:ref:`select() <func-select>` function just waits until the driver is ready for a -non-blocking :ref:`write() <func-write>` call. +When use of the :c:func:`write()` function has been negotiated the +:c:func:`select()` function just waits until the driver is ready for a +non-blocking :c:func:`write()` call. -All drivers implementing the :ref:`read() <func-read>` or :ref:`write() <func-write>` -function or streaming I/O must also support the :ref:`select() <func-select>` +All drivers implementing the :c:func:`read()` or :c:func:`write()` +function or streaming I/O must also support the :c:func:`select()` function. -For more details see the :ref:`select() <func-select>` manual page. - +For more details see the :c:func:`select()` manual page. Return Value ============ -On success, :ref:`select() <func-select>` returns the number of descriptors +On success, :c:func:`select()` returns the number of descriptors contained in the three returned descriptor sets, which will be zero if the timeout expired. On error -1 is returned, and the ``errno`` variable is set appropriately; the sets and ``timeout`` are undefined. Possible @@ -115,6 +111,6 @@ EINVAL ``FD_SETSIZE``. .. [#f1] - The Linux kernel implements :ref:`select() <func-select>` like the - :ref:`poll() <func-poll>` function, but :ref:`select() <func-select>` cannot + The Linux kernel implements :c:func:`select()` like the + :c:func:`poll()` function, but :c:func:`select()` cannot return a ``POLLERR``. diff --git a/Documentation/userspace-api/media/v4l/func-write.rst b/Documentation/userspace-api/media/v4l/func-write.rst index 37683611df04..49f5a0f4275f 100644 --- a/Documentation/userspace-api/media/v4l/func-write.rst +++ b/Documentation/userspace-api/media/v4l/func-write.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-write: @@ -11,7 +12,6 @@ Name v4l2-write - Write to a V4L2 device - Synopsis ======== @@ -19,15 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t write( int fd, void *buf, size_t count ) - :name: v4l2-write Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``buf`` Buffer with data to be written @@ -38,10 +36,10 @@ Arguments Description =========== -:ref:`write() <func-write>` writes up to ``count`` bytes to the device +:c:func:`write()` writes up to ``count`` bytes to the device referenced by the file descriptor ``fd`` from the buffer starting at ``buf``. When the hardware outputs are not active yet, this function -enables them. When ``count`` is zero, :ref:`write() <func-write>` returns 0 +enables them. When ``count`` is zero, :c:func:`write()` returns 0 without any other effect. When the application does not provide more data in time, the previous @@ -49,7 +47,6 @@ video frame, raw VBI image, sliced VPS or WSS data is displayed again. Sliced Teletext or Closed Caption data is not repeated, the driver inserts a blank line instead. - Return Value ============ @@ -80,5 +77,5 @@ EIO I/O error. This indicates some hardware problem. EINVAL - The :ref:`write() <func-write>` function is not supported by this driver, + The :c:func:`write()` function is not supported by this driver, not on this device, or generally not on this type of device. diff --git a/Documentation/userspace-api/media/v4l/hist-v4l2.rst b/Documentation/userspace-api/media/v4l/hist-v4l2.rst index 1a4fd941f163..28a2750d5c8c 100644 --- a/Documentation/userspace-api/media/v4l/hist-v4l2.rst +++ b/Documentation/userspace-api/media/v4l/hist-v4l2.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _hist-v4l2: @@ -14,18 +15,17 @@ not just an extension but a replacement for the V4L API. However it took another four years and two stable kernel releases until the new API was finally accepted for inclusion into the kernel in its present form. - Early Versions ============== 1998-08-20: First version. -1998-08-27: The :ref:`select() <func-select>` function was introduced. +1998-08-27: The :c:func:`select()` function was introduced. 1998-09-10: New video standard interface. 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise -meaningless ``O_TRUNC`` :ref:`open() <func-open>` flag, and the +meaningless ``O_TRUNC`` :c:func:`open()` flag, and the aliases ``O_NONCAP`` and ``O_NOIO`` were defined. Applications can set this flag if they intend to access controls only, as opposed to capture applications which need exclusive access. The ``VIDEO_STD_XXX`` @@ -65,7 +65,6 @@ output devices were added. 1999-01-19: The ``VIDIOC_NEXTBUF`` ioctl was removed. - V4L2 Version 0.16 1999-01-31 ============================ @@ -73,7 +72,6 @@ V4L2 Version 0.16 1999-01-31 are gone. VIDIOC_QBUF takes a v4l2_buffer as a parameter. Added digital zoom (cropping) controls. - V4L2 Version 0.18 1999-03-16 ============================ @@ -81,7 +79,6 @@ Added a v4l to V4L2 ioctl compatibility layer to videodev.c. Driver writers, this changes how you implement your ioctl handler. See the Driver Writer's Guide. Added some more control id codes. - V4L2 Version 0.19 1999-06-05 ============================ @@ -107,7 +104,6 @@ malfunction of this ioctl. 1999-06-05: Changed the value of V4L2_CID_WHITENESS. - V4L2 Version 0.20 (1999-09-10) ============================== @@ -128,14 +124,12 @@ common Linux driver API conventions. VIDIOC_STREAMON, VIDIOC_STREAMOFF, VIDIOC_S_FREQ, VIDIOC_S_INPUT, VIDIOC_S_OUTPUT, VIDIOC_S_EFFECT. For example - .. code-block:: c err = ioctl (fd, VIDIOC_XXX, V4L2_XXX); becomes - .. code-block:: c int a = V4L2_XXX; err = ioctl(fd, VIDIOC_XXX, &a); @@ -202,7 +196,6 @@ common Linux driver API conventions. field counts captured frames, it is ignored by output devices. When a capture driver drops a frame, the sequence number of that frame is skipped. - V4L2 Version 0.20 incremental changes ===================================== @@ -290,13 +283,11 @@ A number of changes were made to the raw VBI interface. were added. The former is an alias for the old ``V4L2_TYPE_VBI``, the latter was missing in the ``videodev.h`` file. - V4L2 Version 0.20 2002-07-25 ============================ Added sliced VBI interface proposal. - V4L2 in Linux 2.5.46, 2002-10 ============================= @@ -307,7 +298,7 @@ This unnamed version was finally merged into Linux 2.5.46. 1. As specified in :ref:`related`, drivers must make related device functions available under all minor device numbers. -2. The :ref:`open() <func-open>` function requires access mode +2. The :c:func:`open()` function requires access mode ``O_RDWR`` regardless of the device type. All V4L2 drivers exchanging data with applications must support the ``O_NONBLOCK`` flag. The ``O_NOIO`` flag, a V4L2 symbol which aliased the @@ -435,7 +426,6 @@ This unnamed version was finally merged into Linux 2.5.46. the buffer type names changed as follows. - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -597,7 +587,6 @@ This unnamed version was finally merged into Linux 2.5.46. V4L2 documentation was inaccurate, this has been corrected in :ref:`pixfmt`. - V4L2 2003-06-19 =============== @@ -648,7 +637,6 @@ V4L2 2003-06-19 Kernel 2.6.39. Drivers and applications assuming a constant parameter need an update. - V4L2 2003-11-05 =============== @@ -657,7 +645,6 @@ V4L2 2003-11-05 refer to bytes in memory, in ascending address order. - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -678,7 +665,6 @@ V4L2 2003-11-05 - R, G, B, X - B, G, R, X - The ``V4L2_PIX_FMT_BGR24`` example was always correct. In :ref:`v4l-image-properties` the mapping of the V4L @@ -689,7 +675,6 @@ V4L2 2003-11-05 RGB pixel formats differently. These issues have yet to be addressed, for details see :ref:`pixfmt-rgb`. - V4L2 in Linux 2.6.6, 2004-05-09 =============================== @@ -698,7 +683,6 @@ V4L2 in Linux 2.6.6, 2004-05-09 ioctl, while the read-only version was renamed to ``VIDIOC_CROPCAP_OLD``. The old ioctl was removed on Kernel 2.6.39. - V4L2 in Linux 2.6.8 =================== @@ -709,7 +693,6 @@ V4L2 in Linux 2.6.8 the new ``V4L2_BUF_FLAG_INPUT`` flag. The ``flags`` field is no longer read-only. - V4L2 spec erratum 2004-08-01 ============================ @@ -727,7 +710,6 @@ V4L2 spec erratum 2004-08-01 also missing from examples. Also on the ``VIDIOC_DQBUF`` page the ``EIO`` error code was not documented. - V4L2 in Linux 2.6.14 ==================== @@ -735,7 +717,6 @@ V4L2 in Linux 2.6.14 :ref:`sliced` and replaces the interface first proposed in V4L2 specification 0.8. - V4L2 in Linux 2.6.15 ==================== @@ -755,7 +736,6 @@ V4L2 in Linux 2.6.15 ``VIDIOC_G_MPEGCOMP`` and ``VIDIOC_S_MPEGCOMP`` ioctls where removed in Linux 2.6.25.) - V4L2 spec erratum 2005-11-27 ============================ @@ -765,7 +745,6 @@ cropping is supported. In the video standard selection example in :ref:`standard` the :ref:`VIDIOC_S_STD <VIDIOC_G_STD>` call used the wrong argument type. - V4L2 spec erratum 2006-01-10 ============================ @@ -778,14 +757,12 @@ V4L2 spec erratum 2006-01-10 write-only as stated on its reference page. The ioctl changed in 2003 as noted above. - V4L2 spec erratum 2006-02-03 ============================ 1. In struct v4l2_captureparm and struct v4l2_outputparm the ``timeperframe`` field gives the time in seconds, not microseconds. - V4L2 spec erratum 2006-02-04 ============================ @@ -808,7 +785,6 @@ V4L2 in Linux 2.6.17 ``V4L2_TUNER_MODE_STEREO`` for this purpose is deprecated now. See the :ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>` section for details. - V4L2 spec erratum 2006-09-23 (Draft 0.15) ========================================= @@ -837,7 +813,6 @@ V4L2 spec erratum 2006-09-23 (Draft 0.15) extended from 224-239 to 224-255. Accordingly device file names ``/dev/vbi0`` to ``/dev/vbi31`` are possible now. - V4L2 in Linux 2.6.18 ==================== @@ -852,7 +827,6 @@ V4L2 in Linux 2.6.18 ``V4L2_CTRL_FLAG_INACTIVE`` and ``V4L2_CTRL_FLAG_SLIDER`` (:ref:`control-flags`). See :ref:`extended-controls` for details. - V4L2 in Linux 2.6.19 ==================== @@ -874,14 +848,12 @@ V4L2 in Linux 2.6.19 3. A new pixel format ``V4L2_PIX_FMT_RGB444`` (:ref:`pixfmt-rgb`) was added. - V4L2 spec erratum 2006-10-12 (Draft 0.17) ========================================= 1. ``V4L2_PIX_FMT_HM12`` (:ref:`reserved-formats`) is a YUV 4:2:0, not 4:2:2 format. - V4L2 in Linux 2.6.21 ==================== @@ -889,7 +861,6 @@ V4L2 in Linux 2.6.21 General Public License version two or later, and under a 3-clause BSD-style license. - V4L2 in Linux 2.6.22 ==================== @@ -914,7 +885,6 @@ V4L2 in Linux 2.6.22 This may **break compatibility** with existing applications. Drivers supporting the "host order RGB32" format are not known. - V4L2 in Linux 2.6.24 ==================== @@ -922,7 +892,6 @@ V4L2 in Linux 2.6.24 ``V4L2_PIX_FMT_YUV555``, ``V4L2_PIX_FMT_YUV565`` and ``V4L2_PIX_FMT_YUV32`` were added. - V4L2 in Linux 2.6.25 ==================== @@ -949,7 +918,6 @@ V4L2 in Linux 2.6.25 interface in Linux 2.6.18, where finally removed from the ``videodev2.h`` header file. - V4L2 in Linux 2.6.26 ==================== @@ -959,7 +927,6 @@ V4L2 in Linux 2.6.26 2. Added user controls ``V4L2_CID_CHROMA_AGC`` and ``V4L2_CID_COLOR_KILLER``. - V4L2 in Linux 2.6.27 ==================== @@ -971,7 +938,6 @@ V4L2 in Linux 2.6.27 ``V4L2_PIX_FMT_PCA561``, ``V4L2_PIX_FMT_SGBRG8``, ``V4L2_PIX_FMT_PAC207`` and ``V4L2_PIX_FMT_PJPG`` were added. - V4L2 in Linux 2.6.28 ==================== @@ -983,7 +949,6 @@ V4L2 in Linux 2.6.28 3. The pixel formats ``V4L2_PIX_FMT_SGRBG10`` and ``V4L2_PIX_FMT_SGRBG10DPCM8`` were added. - V4L2 in Linux 2.6.29 ==================== @@ -999,7 +964,6 @@ V4L2 in Linux 2.6.29 ``V4L2_CID_ZOOM_RELATIVE``, ``V4L2_CID_ZOOM_CONTINUOUS`` and ``V4L2_CID_PRIVACY``. - V4L2 in Linux 2.6.30 ==================== @@ -1007,7 +971,6 @@ V4L2 in Linux 2.6.30 2. New control ``V4L2_CID_COLORFX`` was added. - V4L2 in Linux 2.6.32 ==================== @@ -1034,21 +997,18 @@ V4L2 in Linux 2.6.32 9. Added Remote Controller chapter, describing the default Remote Controller mapping for media devices. - V4L2 in Linux 2.6.33 ==================== 1. Added support for Digital Video timings in order to support HDTV receivers and transmitters. - V4L2 in Linux 2.6.34 ==================== 1. Added ``V4L2_CID_IRIS_ABSOLUTE`` and ``V4L2_CID_IRIS_RELATIVE`` controls to the :ref:`Camera controls class <camera-controls>`. - V4L2 in Linux 2.6.37 ==================== @@ -1057,7 +1017,6 @@ V4L2 in Linux 2.6.37 applications found that used it. It was originally scheduled for removal in 2.6.35. - V4L2 in Linux 2.6.39 ==================== @@ -1067,7 +1026,6 @@ V4L2 in Linux 2.6.39 drivers and applications. See :ref:`multi-planar API <planar-apis>` for details. - V4L2 in Linux 3.1 ================= @@ -1078,7 +1036,6 @@ V4L2 in Linux 3.1 Added V4L2_CTRL_TYPE_BITMASK. - V4L2 in Linux 3.2 ================= @@ -1089,7 +1046,6 @@ V4L2 in Linux 3.2 Does not affect the compatibility of current drivers and applications. See :ref:`selection API <selection-api>` for details. - V4L2 in Linux 3.3 ================= @@ -1099,7 +1055,6 @@ V4L2 in Linux 3.3 2. Added the device_caps field to struct v4l2_capabilities and added the new V4L2_CAP_DEVICE_CAPS capability. - V4L2 in Linux 3.4 ================= @@ -1110,7 +1065,6 @@ V4L2 in Linux 3.4 :ref:`VIDIOC_QUERY_DV_TIMINGS` and :ref:`VIDIOC_DV_TIMINGS_CAP`. - V4L2 in Linux 3.5 ================= @@ -1137,7 +1091,6 @@ V4L2 in Linux 3.5 ``V4L2_CID_AUTO_FOCUS_START``, ``V4L2_CID_AUTO_FOCUS_STOP``, ``V4L2_CID_AUTO_FOCUS_STATUS`` and ``V4L2_CID_AUTO_FOCUS_RANGE``. - V4L2 in Linux 3.6 ================= @@ -1150,7 +1103,6 @@ V4L2 in Linux 3.6 3. Added support for frequency band enumerations: :ref:`VIDIOC_ENUM_FREQ_BANDS`. - V4L2 in Linux 3.9 ================= @@ -1160,7 +1112,6 @@ V4L2 in Linux 3.9 2. Added ``V4L2_EVENT_CTRL_CH_RANGE`` control event changes flag. See :ref:`ctrl-changes-flags`. - V4L2 in Linux 3.10 ================== @@ -1172,32 +1123,27 @@ V4L2 in Linux 3.10 2. Added new debugging ioctl :ref:`VIDIOC_DBG_G_CHIP_INFO`. - V4L2 in Linux 3.11 ================== 1. Remove obsolete ``VIDIOC_DBG_G_CHIP_IDENT`` ioctl. - V4L2 in Linux 3.14 ================== 1. In struct v4l2_rect, the type of ``width`` and ``height`` fields changed from _s32 to _u32. - V4L2 in Linux 3.15 ================== 1. Added Software Defined Radio (SDR) Interface. - V4L2 in Linux 3.16 ================== 1. Added event V4L2_EVENT_SOURCE_CHANGE. - V4L2 in Linux 3.17 ================== @@ -1207,14 +1153,12 @@ V4L2 in Linux 3.17 2. Added compound control types and :ref:`VIDIOC_QUERY_EXT_CTRL <VIDIOC_QUERYCTRL>`. - V4L2 in Linux 3.18 ================== 1. Added ``V4L2_CID_PAN_SPEED`` and ``V4L2_CID_TILT_SPEED`` camera controls. - V4L2 in Linux 3.19 ================== @@ -1232,13 +1176,11 @@ V4L2 in Linux 4.4 3. Added transmitter support for Software Defined Radio (SDR) Interface. - .. _other: Relation of V4L2 to other Linux multimedia APIs =============================================== - .. _xvideo: X Video Extension @@ -1284,7 +1226,6 @@ YUV to RGB conversion and scaling for faster video playback, and added an interface to MPEG-2 decoding hardware. This API is useful to display images captured with V4L2 devices. - Digital Video ------------- @@ -1294,13 +1235,11 @@ homepage at `https://linuxtv.org <https://linuxtv.org>`__. The Linux DVB API has no connection to the V4L2 API except that drivers for hybrid hardware may support both. - Audio Interfaces ---------------- [to do - OSS/ALSA] - .. _experimental: Experimental API Elements @@ -1314,7 +1253,6 @@ change in the future. - :ref:`VIDIOC_DBG_G_CHIP_INFO` ioctl. - .. _obsolete: Obsolete API Elements diff --git a/Documentation/userspace-api/media/v4l/io.rst b/Documentation/userspace-api/media/v4l/io.rst index 9dc36b41dbf6..ce0cece6f35f 100644 --- a/Documentation/userspace-api/media/v4l/io.rst +++ b/Documentation/userspace-api/media/v4l/io.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _io: @@ -9,8 +10,8 @@ The V4L2 API defines several different methods to read from or write to a device. All drivers exchanging data with applications must support at least one of them. -The classic I/O method using the :ref:`read() <func-read>` and -:ref:`write() <func-write>` function is automatically selected after opening a +The classic I/O method using the :c:func:`read()` and +:c:func:`write()` function is automatically selected after opening a V4L2 device. When the driver does not support this method attempts to read or write will fail at any time. @@ -38,7 +39,6 @@ closing and reopening the device. The following sections describe the various I/O methods in more detail. - .. toctree:: :maxdepth: 1 diff --git a/Documentation/userspace-api/media/v4l/libv4l-introduction.rst b/Documentation/userspace-api/media/v4l/libv4l-introduction.rst index e03280b35570..05690f2358ce 100644 --- a/Documentation/userspace-api/media/v4l/libv4l-introduction.rst +++ b/Documentation/userspace-api/media/v4l/libv4l-introduction.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _libv4l-introduction: @@ -17,7 +18,6 @@ An example of using libv4l is provided by libv4l consists of 3 different libraries: - libv4lconvert ============= @@ -65,7 +65,6 @@ libv4lconvert/processing. These controls are stored application wide libv4lconvert/processing offers the actual video processing functionality. - libv4l1 ======= @@ -78,7 +77,6 @@ just pass calls through. Since those functions are emulations of the old V4L1 API, it shouldn't be used for new applications. - libv4l2 ======= @@ -105,7 +103,6 @@ available in the driver. :ref:`VIDIOC_ENUM_FMT <VIDIOC_ENUM_FMT>` keeps enumerating the hardware supported formats, plus the emulated formats offered by libv4l at the end. - .. _libv4l-ops: Libv4l device control functions @@ -115,17 +112,17 @@ The common file operation methods are provided by libv4l. Those functions operate just like the gcc function ``dup()`` and V4L2 functions -:c:func:`open() <v4l2-open>`, :c:func:`close() <v4l2-close>`, -:c:func:`ioctl() <v4l2-ioctl>`, :c:func:`read() <v4l2-read>`, -:c:func:`mmap() <v4l2-mmap>` and :c:func:`munmap() <v4l2-munmap>`: +:c:func:`open()`, :c:func:`close()`, +:c:func:`ioctl()`, :c:func:`read()`, +:c:func:`mmap()` and :c:func:`munmap()`: .. c:function:: int v4l2_open(const char *file, int oflag, ...) - operates like the :c:func:`open() <v4l2-open>` function. + operates like the :c:func:`open()` function. .. c:function:: int v4l2_close(int fd) - operates like the :c:func:`close() <v4l2-close>` function. + operates like the :c:func:`close()` function. .. c:function:: int v4l2_dup(int fd) @@ -133,19 +130,19 @@ V4L2 functions .. c:function:: int v4l2_ioctl (int fd, unsigned long int request, ...) - operates like the :c:func:`ioctl() <v4l2-ioctl>` function. + operates like the :c:func:`ioctl()` function. .. c:function:: int v4l2_read (int fd, void* buffer, size_t n) - operates like the :c:func:`read() <v4l2-read>` function. + operates like the :c:func:`read()` function. .. c:function:: void v4l2_mmap(void *start, size_t length, int prot, int flags, int fd, int64_t offset); - operates like the :c:func:`munmap() <v4l2-munmap>` function. + operates like the :c:func:`munmap()` function. .. c:function:: int v4l2_munmap(void *_start, size_t length); - operates like the :c:func:`munmap() <v4l2-munmap>` function. + operates like the :c:func:`munmap()` function. Those functions provide additional control: @@ -168,14 +165,13 @@ Those functions provide additional control: of the given v4l control id. when the cid does not exist, could not be accessed for some reason, or some error occurred 0 is returned. - v4l1compat.so wrapper library ============================= This library intercepts calls to -:c:func:`open() <v4l2-open>`, :c:func:`close() <v4l2-close>`, -:c:func:`ioctl() <v4l2-ioctl>`, :c:func:`mmap() <v4l2-mmap>` and -:c:func:`munmap() <v4l2-munmap>` +:c:func:`open()`, :c:func:`close()`, +:c:func:`ioctl()`, :c:func:`mmap()` and +:c:func:`munmap()` operations and redirects them to the libv4l counterparts, by using ``LD_PRELOAD=/usr/lib/v4l1compat.so``. It also emulates V4L1 calls via V4L2 API. diff --git a/Documentation/userspace-api/media/v4l/mmap.rst b/Documentation/userspace-api/media/v4l/mmap.rst index 1cce31c6de79..16b1e13b029f 100644 --- a/Documentation/userspace-api/media/v4l/mmap.rst +++ b/Documentation/userspace-api/media/v4l/mmap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _mmap: @@ -35,22 +36,22 @@ This ioctl can also be used to change the number of buffers or to free the allocated memory, provided none of the buffers are still mapped. Before applications can access the buffers they must map them into their -address space with the :ref:`mmap() <func-mmap>` function. The +address space with the :c:func:`mmap()` function. The location of the buffers in device memory can be determined with the :ref:`VIDIOC_QUERYBUF` ioctl. In the single-planar API case, the ``m.offset`` and ``length`` returned in a struct :c:type:`v4l2_buffer` are passed as sixth and second -parameter to the :ref:`mmap() <func-mmap>` function. When using the +parameter to the :c:func:`mmap()` function. When using the multi-planar API, struct :c:type:`v4l2_buffer` contains an array of struct :c:type:`v4l2_plane` structures, each containing its own ``m.offset`` and ``length``. When using the multi-planar API, every plane of every buffer has to be mapped -separately, so the number of calls to :ref:`mmap() <func-mmap>` should +separately, so the number of calls to :c:func:`mmap()` should be equal to number of buffers times number of planes in each buffer. The offset and length values must not be modified. Remember, the buffers are allocated in physical memory, as opposed to virtual memory, which can be swapped out to disk. Applications should free the buffers as soon as -possible with the :ref:`munmap() <func-munmap>` function. +possible with the :c:func:`munmap()` function. Example: Mapping buffers in the single-planar API ================================================= @@ -122,7 +123,6 @@ Example: Mapping buffers in the single-planar API for (i = 0; i < reqbuf.count; i++) munmap(buffers[i].start, buffers[i].length); - Example: Mapping buffers in the multi-planar API ================================================ @@ -238,10 +238,10 @@ be determined at any time using the :ref:`VIDIOC_QUERYBUF` ioctl. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the ``O_NONBLOCK`` -flag was given to the :ref:`open() <func-open>` function, +flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` -error code when no buffer is available. The :ref:`select() <func-select>` -or :ref:`poll() <func-poll>` functions are always available. +error code when no buffer is available. The :c:func:`select()` +or :c:func:`poll()` functions are always available. To start and stop capturing or output applications call the :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF @@ -259,15 +259,15 @@ Drivers implementing memory mapping I/O must support the <VIDIOC_QUERYBUF>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the :ref:`mmap() -<func-mmap>`, :ref:`munmap() <func-munmap>`, :ref:`select() -<func-select>` and :ref:`poll() <func-poll>` function. [#f3]_ +<func-mmap>`, :c:func:`munmap()`, :ref:`select() +<func-select>` and :c:func:`poll()` function. [#f3]_ [capture example] .. [#f1] One could use one file descriptor and set the buffer type field accordingly when calling :ref:`VIDIOC_QBUF` etc., - but it makes the :ref:`select() <func-select>` function ambiguous. We also + but it makes the :c:func:`select()` function ambiguous. We also like the clean approach of one file descriptor per logical stream. Video overlay for example is also a logical stream, although the CPU is not needed for continuous operation. @@ -280,6 +280,6 @@ and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the :ref:`mmap() scatter-gather lists and the like. .. [#f3] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. The rest should be evident. diff --git a/Documentation/userspace-api/media/v4l/open.rst b/Documentation/userspace-api/media/v4l/open.rst index 4e8fd216a1b0..18bfb9b8137d 100644 --- a/Documentation/userspace-api/media/v4l/open.rst +++ b/Documentation/userspace-api/media/v4l/open.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _open: @@ -140,7 +141,6 @@ means applications cannot *reliably* scan for loaded or installed drivers. The user must enter a device name, or the application can try the conventional device names. - .. _related: Related Devices @@ -157,7 +157,7 @@ support all functions. However, in practice this never worked: this support it and if they did it was certainly never tested. In addition, switching a device node between different functions only works when using the streaming I/O API, not with the -:ref:`read() <func-read>`/\ :ref:`write() <func-write>` API. +:c:func:`read()`/\ :c:func:`write()` API. Today each V4L2 device node supports just one function. @@ -178,7 +178,6 @@ the Media Controller. If you want to work on this please write to the linux-media mailing list: `https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__. - Multiple Opens ============== @@ -192,8 +191,8 @@ device should not change the state of the device. [#f2]_ Once an application has allocated the memory buffers needed for streaming data (by calling the :ref:`VIDIOC_REQBUFS` or :ref:`VIDIOC_CREATE_BUFS` ioctls, or -implicitly by calling the :ref:`read() <func-read>` or -:ref:`write() <func-write>` functions) that application (filehandle) +implicitly by calling the :c:func:`read()` or +:c:func:`write()` functions) that application (filehandle) becomes the owner of the device. It is no longer allowed to make changes that would affect the buffer sizes (e.g. by calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl) and other applications are @@ -206,7 +205,6 @@ requested type of data, and to change related properties, to this file descriptor. Applications can request additional access privileges using the priority mechanism described in :ref:`app-pri`. - Shared Data Streams =================== @@ -215,12 +213,11 @@ the same data stream on a device by copying buffers, time multiplexing or similar means. This is better handled by a proxy application in user space. - Functions ========= To open and close V4L2 devices applications use the -:ref:`open() <func-open>` and :ref:`close() <func-close>` function, +:c:func:`open()` and :c:func:`close()` function, respectively. Devices are programmed using the :ref:`ioctl() <func-ioctl>` function as explained in the following sections. @@ -228,7 +225,7 @@ sections. .. [#f1] There are still some old and obscure drivers that have not been updated to allow for multiple opens. This implies that for such - drivers :ref:`open() <func-open>` can return an ``EBUSY`` error code + drivers :c:func:`open()` can return an ``EBUSY`` error code when the device is already in use. .. [#f2] diff --git a/Documentation/userspace-api/media/v4l/rw.rst b/Documentation/userspace-api/media/v4l/rw.rst index 43609a27c3ec..64b85fb2a328 100644 --- a/Documentation/userspace-api/media/v4l/rw.rst +++ b/Documentation/userspace-api/media/v4l/rw.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _rw: @@ -6,8 +7,8 @@ Read/Write ********** -Input and output devices support the :ref:`read() <func-read>` and -:ref:`write() <func-write>` function, respectively, when the +Input and output devices support the :c:func:`read()` and +:c:func:`write()` function, respectively, when the ``V4L2_CAP_READWRITE`` flag in the ``capabilities`` field of struct :c:type:`v4l2_capability` returned by the :ref:`VIDIOC_QUERYCAP` ioctl is set. @@ -22,18 +23,17 @@ However this is also the simplest I/O method, requiring little or no setup to exchange data. It permits command line stunts like this (the vidctrl tool is fictitious): - .. code-block:: none $ vidctrl /dev/video --input=0 --format=YUYV --size=352x288 $ dd if=/dev/video of=myimage.422 bs=202752 count=1 -To read from the device applications use the :ref:`read() <func-read>` -function, to write the :ref:`write() <func-write>` function. Drivers +To read from the device applications use the :c:func:`read()` +function, to write the :c:func:`write()` function. Drivers must implement one I/O method if they exchange data with applications, but it need not be this. [#f1]_ When reading or writing is supported, the -driver must also support the :ref:`select() <func-select>` and -:ref:`poll() <func-poll>` function. [#f2]_ +driver must also support the :c:func:`select()` and +:c:func:`poll()` function. [#f2]_ .. [#f1] It would be desirable if applications could depend on drivers @@ -43,5 +43,5 @@ driver must also support the :ref:`select() <func-select>` and capturing still images. .. [#f2] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. diff --git a/Documentation/userspace-api/media/v4l/streaming-par.rst b/Documentation/userspace-api/media/v4l/streaming-par.rst index cc2e8fcecc7e..806cbfdad0f1 100644 --- a/Documentation/userspace-api/media/v4l/streaming-par.rst +++ b/Documentation/userspace-api/media/v4l/streaming-par.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _streaming-par: @@ -14,13 +15,13 @@ The current video standard determines a nominal number of frames per second. If less than this number of frames is to be captured or output, applications can request frame skipping or duplicating on the driver side. This is especially useful when using the -:ref:`read() <func-read>` or :ref:`write() <func-write>`, which are +:c:func:`read()` or :c:func:`write()`, which are not augmented by timestamps or sequence counters, and to avoid unnecessary data copying. Finally these ioctls can be used to determine the number of buffers used internally by a driver in read/write mode. For implications see the -section discussing the :ref:`read() <func-read>` function. +section discussing the :c:func:`read()` function. To get and set the streaming parameters applications call the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and diff --git a/Documentation/userspace-api/media/v4l/userp.rst b/Documentation/userspace-api/media/v4l/userp.rst index 5b7321907dab..db224f9b611e 100644 --- a/Documentation/userspace-api/media/v4l/userp.rst +++ b/Documentation/userspace-api/media/v4l/userp.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _userp: @@ -78,10 +79,10 @@ buffers it must wait until an empty buffer can be dequeued and reused. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the -``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` function, +``O_NONBLOCK`` flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` error code when no buffer is available. The :ref:`select() -<func-select>` or :ref:`poll() <func-poll>` function are always +<func-select>` or :c:func:`poll()` function are always available. To start and stop capturing or output applications call the @@ -101,7 +102,7 @@ Drivers implementing user pointer I/O must support the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` function. [#f2]_ +:c:func:`select()` and :c:func:`poll()` function. [#f2]_ .. [#f1] We expect that frequently used buffers are typically not swapped out. @@ -116,6 +117,6 @@ and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the because an application may share them with other processes. .. [#f2] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. The rest should be evident. diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst index d999028f47df..b06e5b528e11 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_CREATE_BUFS: @@ -11,24 +12,22 @@ Name VIDIOC_CREATE_BUFS - Create buffers for Memory Mapped or User Pointer or DMA Buffer I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_CREATE_BUFS, struct v4l2_create_buffers *argp ) - :name: VIDIOC_CREATE_BUFS +.. c:macro:: VIDIOC_CREATE_BUFS +``int ioctl(int fd, VIDIOC_CREATE_BUFS, struct v4l2_create_buffers *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_create_buffers`. - Description =========== @@ -71,7 +70,6 @@ the actual number allocated and the starting index in the ``count`` and the ``index`` fields respectively. On return ``count`` can be smaller than the number requested. - .. c:type:: v4l2_create_buffers .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -119,7 +117,6 @@ than the number requested. - A place holder for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst b/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst index aa02c312824e..00c31410d4e4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_CROPCAP: @@ -11,24 +12,22 @@ Name VIDIOC_CROPCAP - Information about the video cropping and scaling abilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_CROPCAP, struct v4l2_cropcap *argp ) - :name: VIDIOC_CROPCAP +.. c:macro:: VIDIOC_CROPCAP +``int ioctl(int fd, VIDIOC_CROPCAP, struct v4l2_cropcap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_cropcap`. - Description =========== @@ -95,7 +94,6 @@ overlay devices. Starting with kernel 4.13 both variations are allowed. - .. _v4l2-rect-crop: .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -120,7 +118,6 @@ overlay devices. - ``height`` - Height of the rectangle, in pixels. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst index a2541329b30a..bde6e952b267 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DBG_G_CHIP_INFO: @@ -11,24 +12,22 @@ Name VIDIOC_DBG_G_CHIP_INFO - Identify the chips on a TV card - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DBG_G_CHIP_INFO, struct v4l2_dbg_chip_info *argp ) - :name: VIDIOC_DBG_G_CHIP_INFO +.. c:macro:: VIDIOC_DBG_G_CHIP_INFO +``int ioctl(int fd, VIDIOC_DBG_G_CHIP_INFO, struct v4l2_dbg_chip_info *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dbg_chip_info`. - Description =========== @@ -76,7 +75,6 @@ is available from the LinuxTV v4l-dvb repository; see `https://linuxtv.org/repo/ <https://linuxtv.org/repo/>`__ for access instructions. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. _name-v4l2-dbg-match: @@ -103,7 +101,6 @@ instructions. - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_dbg_chip_info @@ -130,7 +127,6 @@ instructions. - Reserved fields, both application and driver must set these to 0. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _name-chip-match-types: @@ -148,7 +144,6 @@ instructions. - 4 - Match the nth sub-device. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst index 350a04eb0e86..e1a6abe705bd 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DBG_G_REGISTER: @@ -11,27 +12,26 @@ Name VIDIOC_DBG_G_REGISTER - VIDIOC_DBG_S_REGISTER - Read or write hardware registers - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DBG_G_REGISTER, struct v4l2_dbg_register *argp ) - :name: VIDIOC_DBG_G_REGISTER +.. c:macro:: VIDIOC_DBG_G_REGISTER + +``int ioctl(int fd, VIDIOC_DBG_G_REGISTER, struct v4l2_dbg_register *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_DBG_S_REGISTER, const struct v4l2_dbg_register *argp ) - :name: VIDIOC_DBG_S_REGISTER +.. c:macro:: VIDIOC_DBG_S_REGISTER +``int ioctl(int fd, VIDIOC_DBG_S_REGISTER, const struct v4l2_dbg_register *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dbg_register`. - Description =========== @@ -85,7 +85,6 @@ It is available from the LinuxTV v4l-dvb repository; see `https://linuxtv.org/repo/ <https://linuxtv.org/repo/>`__ for access instructions. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_dbg_match @@ -112,7 +111,6 @@ instructions. - - .. c:type:: v4l2_dbg_register .. flat-table:: struct v4l2_dbg_register @@ -133,7 +131,6 @@ instructions. - The value read from, or to be written into the register. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _chip-match-types: @@ -151,7 +148,6 @@ instructions. - 4 - Match the nth sub-device. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst b/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst index 0ef757f061e3..fd71ceece037 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DECODER_CMD: @@ -11,28 +12,26 @@ Name VIDIOC_DECODER_CMD - VIDIOC_TRY_DECODER_CMD - Execute an decoder command - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DECODER_CMD, struct v4l2_decoder_cmd *argp ) - :name: VIDIOC_DECODER_CMD +.. c:macro:: VIDIOC_DECODER_CMD +``int ioctl(int fd, VIDIOC_DECODER_CMD, struct v4l2_decoder_cmd *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_DECODER_CMD, struct v4l2_decoder_cmd *argp ) - :name: VIDIOC_TRY_DECODER_CMD +.. c:macro:: VIDIOC_TRY_DECODER_CMD +``int ioctl(int fd, VIDIOC_TRY_DECODER_CMD, struct v4l2_decoder_cmd *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` pointer to struct :c:type:`v4l2_decoder_cmd`. - Description =========== @@ -47,11 +46,11 @@ this structure. The ``cmd`` field must contain the command code. Some commands use the ``flags`` field for additional information. -A :ref:`write() <func-write>` or :ref:`VIDIOC_STREAMON` +A :c:func:`write()` or :ref:`VIDIOC_STREAMON` call sends an implicit START command to the decoder if it has not been started yet. Applies to both queues of mem2mem decoders. -A :ref:`close() <func-close>` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` +A :c:func:`close()` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call of a streaming file descriptor sends an implicit immediate STOP command to the decoder, and all buffered data is discarded. Applies to both queues of mem2mem decoders. @@ -60,7 +59,6 @@ In principle, these ioctls are optional, not all drivers may support them. They introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decoders (as further documented in :ref:`decoder`). - .. tabularcolumns:: |p{1.1cm}|p{2.4cm}|p{1.2cm}|p{1.6cm}|p{10.6cm}| .. c:type:: v4l2_decoder_cmd @@ -131,7 +129,6 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod - - .. tabularcolumns:: |p{5.6cm}|p{0.6cm}|p{11.3cm}| .. _decoder-cmds: diff --git a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst index f0dfc8cf9b14..634af717c8ba 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DQEVENT: @@ -11,24 +12,22 @@ Name VIDIOC_DQEVENT - Dequeue event - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DQEVENT, struct v4l2_event *argp ) - :name: VIDIOC_DQEVENT +.. c:macro:: VIDIOC_DQEVENT +``int ioctl(int fd, VIDIOC_DQEVENT, struct v4l2_event *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_event`. - Description =========== @@ -38,7 +37,6 @@ structure are filled by the driver. The file handle will also receive exceptions which the application may get by e.g. using the select system call. - .. tabularcolumns:: |p{3.0cm}|p{4.4cm}|p{2.4cm}|p{7.7cm}| .. c:type:: v4l2_event @@ -100,7 +98,6 @@ call. zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. cssclass:: longtable @@ -191,7 +188,6 @@ call. - Base event number for driver-private events. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_vsync @@ -206,7 +202,6 @@ call. - The upcoming field. See enum :c:type:`v4l2_field`. - .. tabularcolumns:: |p{3.5cm}|p{3.0cm}|p{1.8cm}|p{8.5cm}| .. c:type:: v4l2_event_ctrl @@ -257,7 +252,6 @@ call. :ref:`v4l2_queryctrl <v4l2-queryctrl>`. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_frame_sync @@ -272,7 +266,6 @@ call. - The sequence number of the frame being received. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_src_change @@ -288,7 +281,6 @@ call. :ref:`src-changes-flags`. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_motion_det @@ -318,7 +310,6 @@ call. automatically assigned to the default region 0. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _ctrl-changes-flags: @@ -344,7 +335,6 @@ call. step or the default value of the control changed. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _src-changes-flags: @@ -375,7 +365,6 @@ call. loss of signal and so restarting streaming I/O is required in order for the hardware to synchronize to the video signal. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst b/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst index 82bb732893be..27bd6a83e42c 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DV_TIMINGS_CAP: @@ -11,27 +12,26 @@ Name VIDIOC_DV_TIMINGS_CAP - VIDIOC_SUBDEV_DV_TIMINGS_CAP - The capabilities of the Digital Video receiver/transmitter - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp ) - :name: VIDIOC_DV_TIMINGS_CAP +.. c:macro:: VIDIOC_DV_TIMINGS_CAP + +``int ioctl(int fd, VIDIOC_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp ) - :name: VIDIOC_SUBDEV_DV_TIMINGS_CAP +.. c:macro:: VIDIOC_SUBDEV_DV_TIMINGS_CAP +``int ioctl(int fd, VIDIOC_SUBDEV_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings_cap`. - Description =========== @@ -55,7 +55,6 @@ the desired pad number in the struct zero the ``reserved`` array. Attempts to query capabilities on a pad that doesn't support them will return an ``EINVAL`` error code. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{13.3cm}| .. c:type:: v4l2_bt_timings_cap @@ -97,7 +96,6 @@ that doesn't support them will return an ``EINVAL`` error code. Drivers must set the array to zero. - .. tabularcolumns:: |p{1.0cm}|p{4.0cm}|p{3.5cm}|p{9.2cm}| .. c:type:: v4l2_dv_timings_cap @@ -153,7 +151,6 @@ that doesn't support them will return an ``EINVAL`` error code. - Can support non-standard timings, i.e. timings not belonging to the standards set in the ``standards`` field. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst b/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst index 44aad55d9459..5673606711b4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENCODER_CMD: @@ -11,22 +12,22 @@ Name VIDIOC_ENCODER_CMD - VIDIOC_TRY_ENCODER_CMD - Execute an encoder command - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENCODER_CMD, struct v4l2_encoder_cmd *argp ) - :name: VIDIOC_ENCODER_CMD +.. c:macro:: VIDIOC_ENCODER_CMD + +``int ioctl(int fd, VIDIOC_ENCODER_CMD, struct v4l2_encoder_cmd *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_ENCODER_CMD, struct v4l2_encoder_cmd *argp ) - :name: VIDIOC_TRY_ENCODER_CMD +.. c:macro:: VIDIOC_TRY_ENCODER_CMD +``int ioctl(int fd, VIDIOC_TRY_ENCODER_CMD, struct v4l2_encoder_cmd *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_encoder_cmd`. @@ -47,16 +48,16 @@ this structure. The ``cmd`` field must contain the command code. Some commands use the ``flags`` field for additional information. -After a STOP command, :ref:`read() <func-read>` calls will read +After a STOP command, :c:func:`read()` calls will read the remaining data buffered by the driver. When the buffer is empty, -:ref:`read() <func-read>` will return zero and the next :ref:`read() <func-read>` +:c:func:`read()` will return zero and the next :c:func:`read()` call will restart the encoder. -A :ref:`read() <func-read>` or :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` +A :c:func:`read()` or :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` call sends an implicit START command to the encoder if it has not been started yet. Applies to both queues of mem2mem encoders. -A :ref:`close() <func-close>` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` +A :c:func:`close()` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call of a streaming file descriptor sends an implicit immediate STOP to the encoder, and all buffered data is discarded. Applies to both queues of mem2mem encoders. @@ -65,7 +66,6 @@ These ioctls are optional, not all drivers may support them. They were introduced in Linux 2.6.21. They are, however, mandatory for stateful mem2mem encoders (as further documented in :ref:`encoder`). - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_encoder_cmd @@ -89,7 +89,6 @@ encoders (as further documented in :ref:`encoder`). the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _encoder-cmds: @@ -134,7 +133,6 @@ encoders (as further documented in :ref:`encoder`). the encoder is already running, this command does nothing. No flags are defined for this command. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _encoder-flags: @@ -151,7 +149,6 @@ encoders (as further documented in :ref:`encoder`). Does not apply to :ref:`encoder`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst index bb74096cfbd8..20730cd4f6ef 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_DV_TIMINGS: @@ -11,27 +12,26 @@ Name VIDIOC_ENUM_DV_TIMINGS - VIDIOC_SUBDEV_ENUM_DV_TIMINGS - Enumerate supported Digital Video timings - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp ) - :name: VIDIOC_ENUM_DV_TIMINGS +.. c:macro:: VIDIOC_ENUM_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp ) - :name: VIDIOC_SUBDEV_ENUM_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_ENUM_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_enum_dv_timings`. - Description =========== @@ -65,7 +65,6 @@ pad number in the struct Attempts to enumerate timings on a pad that doesn't support them will return an ``EINVAL`` error code. - .. c:type:: v4l2_enum_dv_timings .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -91,7 +90,6 @@ return an ``EINVAL`` error code. - ``timings`` - The timings. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst index b8347a96a554..2b3fa9c23146 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FMT: @@ -11,24 +12,22 @@ Name VIDIOC_ENUM_FMT - Enumerate image formats - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FMT, struct v4l2_fmtdesc *argp ) - :name: VIDIOC_ENUM_FMT +.. c:macro:: VIDIOC_ENUM_FMT +``int ioctl(int fd, VIDIOC_ENUM_FMT, struct v4l2_fmtdesc *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_fmtdesc`. - Description =========== @@ -72,7 +71,6 @@ the ``mbus_code`` field is handled differently: formats shall not depend on the active configuration of the video device or device pipeline. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_fmtdesc @@ -137,7 +135,6 @@ the ``mbus_code`` field is handled differently: zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _fmtdesc-flags: @@ -227,7 +224,6 @@ the ``mbus_code`` field is handled differently: device when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst index 68469756e6c7..1f0949726045 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FRAMEINTERVALS: @@ -11,25 +12,23 @@ Name VIDIOC_ENUM_FRAMEINTERVALS - Enumerate frame intervals - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FRAMEINTERVALS, struct v4l2_frmivalenum *argp ) - :name: VIDIOC_ENUM_FRAMEINTERVALS +.. c:macro:: VIDIOC_ENUM_FRAMEINTERVALS +``int ioctl(int fd, VIDIOC_ENUM_FRAMEINTERVALS, struct v4l2_frmivalenum *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frmivalenum` that contains a pixel format and size and receives a frame interval. - Description =========== @@ -91,7 +90,6 @@ other ioctl calls while it runs the frame interval enumeration. frame_rate = 1 / frame_interval - Structs ======= @@ -99,7 +97,6 @@ In the structs below, *IN* denotes a value that has to be filled in by the application, *OUT* denotes values that the driver fills in. The application should zero out all members except for the *IN* fields. - .. c:type:: v4l2_frmival_stepwise .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -120,7 +117,6 @@ application should zero out all members except for the *IN* fields. - Frame interval step size [s]. - .. c:type:: v4l2_frmivalenum .. tabularcolumns:: |p{1.8cm}|p{4.4cm}|p{2.4cm}|p{8.9cm}| @@ -163,11 +159,9 @@ application should zero out all members except for the *IN* fields. applications. - Enums ===== - .. c:type:: v4l2_frmivaltypes .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -187,7 +181,6 @@ Enums - 3 - Step-wise defined frame interval. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst index dc4e0e216e7e..c9a36bcf699f 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FRAMESIZES: @@ -11,26 +12,24 @@ Name VIDIOC_ENUM_FRAMESIZES - Enumerate frame sizes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FRAMESIZES, struct v4l2_frmsizeenum *argp ) - :name: VIDIOC_ENUM_FRAMESIZES +.. c:macro:: VIDIOC_ENUM_FRAMESIZES +``int ioctl(int fd, VIDIOC_ENUM_FRAMESIZES, struct v4l2_frmsizeenum *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frmsizeenum` that contains an index and pixel format and receives a frame width and height. - Description =========== @@ -81,7 +80,6 @@ without any interaction from the application itself. This means that the enumeration data is consistent if the application does not perform any other ioctl calls while it runs the frame size enumeration. - Structs ======= @@ -89,7 +87,6 @@ In the structs below, *IN* denotes a value that has to be filled in by the application, *OUT* denotes values that the driver fills in. The application should zero out all members except for the *IN* fields. - .. c:type:: v4l2_frmsize_discrete .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -107,7 +104,6 @@ application should zero out all members except for the *IN* fields. - Height of the frame [pixel]. - .. c:type:: v4l2_frmsize_stepwise .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -137,7 +133,6 @@ application should zero out all members except for the *IN* fields. - Frame height step size [pixel]. - .. c:type:: v4l2_frmsizeenum .. tabularcolumns:: |p{1.4cm}|p{5.9cm}|p{2.3cm}|p{8.0cm}| @@ -173,11 +168,9 @@ application should zero out all members except for the *IN* fields. applications. - Enums ===== - .. c:type:: v4l2_frmsizetypes .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -197,7 +190,6 @@ Enums - 3 - Step-wise defined frame size. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst index 2dabf542b20f..a0764fca8d18 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FREQ_BANDS: @@ -11,24 +12,22 @@ Name VIDIOC_ENUM_FREQ_BANDS - Enumerate supported frequency bands - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FREQ_BANDS, struct v4l2_frequency_band *argp ) - :name: VIDIOC_ENUM_FREQ_BANDS +.. c:macro:: VIDIOC_ENUM_FREQ_BANDS +``int ioctl(int fd, VIDIOC_ENUM_FREQ_BANDS, struct v4l2_frequency_band *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frequency_band`. - Description =========== @@ -41,7 +40,6 @@ fields, and zero out the ``reserved`` array of a struct This ioctl is supported if the ``V4L2_TUNER_CAP_FREQ_BANDS`` capability of the corresponding tuner/modulator is set. - .. tabularcolumns:: |p{2.9cm}|p{2.9cm}|p{5.8cm}|p{2.9cm}|p{3.0cm}| .. c:type:: v4l2_frequency_band @@ -110,7 +108,6 @@ of the corresponding tuner/modulator is set. Applications and drivers must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _band-modulation: @@ -130,7 +127,6 @@ of the corresponding tuner/modulator is set. - 0x08 - Amplitude Modulation, commonly used for analog radio. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst b/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst index 6cf06ac0bb70..7873e5434d3e 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMAUDIO: @@ -11,24 +12,22 @@ Name VIDIOC_ENUMAUDIO - Enumerate audio inputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMAUDIO, struct v4l2_audio *argp ) - :name: VIDIOC_ENUMAUDIO +.. c:macro:: VIDIOC_ENUMAUDIO +``int ioctl(int fd, VIDIOC_ENUMAUDIO, struct v4l2_audio *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audio`. - Description =========== @@ -43,7 +42,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. See :ref:`VIDIOC_G_AUDIO <VIDIOC_G_AUDIO>` for a description of struct :c:type:`v4l2_audio`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst b/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst index b4a42ea397db..d4c3ba320834 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMAUDOUT: @@ -11,24 +12,22 @@ Name VIDIOC_ENUMAUDOUT - Enumerate audio outputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMAUDOUT, struct v4l2_audioout *argp ) - :name: VIDIOC_ENUMAUDOUT +.. c:macro:: VIDIOC_ENUMAUDOUT +``int ioctl(int fd, VIDIOC_ENUMAUDOUT, struct v4l2_audioout *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audioout`. - Description =========== @@ -48,7 +47,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. See :ref:`VIDIOC_G_AUDIOout <VIDIOC_G_AUDOUT>` for a description of struct :c:type:`v4l2_audioout`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst b/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst index 714688f81e23..0f62e681a827 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMINPUT: @@ -11,24 +12,22 @@ Name VIDIOC_ENUMINPUT - Enumerate video inputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMINPUT, struct v4l2_input *argp ) - :name: VIDIOC_ENUMINPUT +.. c:macro:: VIDIOC_ENUMINPUT +``int ioctl(int fd, VIDIOC_ENUMINPUT, struct v4l2_input *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_input`. - Description =========== @@ -39,7 +38,6 @@ fill the rest of the structure or return an ``EINVAL`` error code when the index is out of bounds. To enumerate all inputs applications shall begin at index zero, incrementing by one until the driver returns ``EINVAL``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_input @@ -103,7 +101,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _input-type: @@ -126,7 +123,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. - This input is a touch device for capturing raw touch data. - .. tabularcolumns:: |p{4.8cm}|p{2.6cm}|p{10.1cm}| .. _input-status: @@ -198,7 +194,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. - VTR time constant. [?] - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _input-capabilities: @@ -222,7 +217,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. ``V4L2_SEL_TGT_NATIVE_SIZE`` selection target, see :ref:`v4l2-selections-common`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst b/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst index 272a0b2b475c..91fcf99094d2 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMOUTPUT: @@ -11,24 +12,22 @@ Name VIDIOC_ENUMOUTPUT - Enumerate video outputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMOUTPUT, struct v4l2_output *argp ) - :name: VIDIOC_ENUMOUTPUT +.. c:macro:: VIDIOC_ENUMOUTPUT +``int ioctl(int fd, VIDIOC_ENUMOUTPUT, struct v4l2_output *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_output`. - Description =========== @@ -40,7 +39,6 @@ when the index is out of bounds. To enumerate all outputs applications shall begin at index zero, incrementing by one until the driver returns ``EINVAL``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_output @@ -98,7 +96,6 @@ shall begin at index zero, incrementing by one until the driver returns zero. - .. tabularcolumns:: |p{7.0cm}|p{1.8cm}|p{8.7cm}| .. _output-type: @@ -121,7 +118,6 @@ shall begin at index zero, incrementing by one until the driver returns - The video output will be copied to a :ref:`video overlay <overlay>`. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _output-capabilities: @@ -145,7 +141,6 @@ shall begin at index zero, incrementing by one until the driver returns ``V4L2_SEL_TGT_NATIVE_SIZE`` selection target, see :ref:`v4l2-selections-common`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst b/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst index 85bc6d0231f1..b5704e8cf909 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMSTD: @@ -11,27 +12,26 @@ Name VIDIOC_ENUMSTD - VIDIOC_SUBDEV_ENUMSTD - Enumerate supported video standards - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMSTD, struct v4l2_standard *argp ) - :name: VIDIOC_ENUMSTD +.. c:macro:: VIDIOC_ENUMSTD + +``int ioctl(int fd, VIDIOC_ENUMSTD, struct v4l2_standard *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUMSTD, struct v4l2_standard *argp ) - :name: VIDIOC_SUBDEV_ENUMSTD +.. c:macro:: VIDIOC_SUBDEV_ENUMSTD +``int ioctl(int fd, VIDIOC_SUBDEV_ENUMSTD, struct v4l2_standard *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_standard`. - Description =========== @@ -45,7 +45,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. Drivers may enumerate a different set of standards after switching the video input or output. [#f1]_ - .. c:type:: v4l2_standard .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -85,7 +84,6 @@ or output. [#f1]_ zero. - .. c:type:: v4l2_fract .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -102,7 +100,6 @@ or output. [#f1]_ - ``denominator`` - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. _v4l2-std-id: @@ -120,7 +117,6 @@ or output. [#f1]_ standards. - .. code-block:: c #define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) @@ -142,7 +138,6 @@ rate, and PAL color modulation with a 4.43 MHz color subcarrier. Some PAL video recorders can play back NTSC tapes in this mode for display on a 50/60 Hz agnostic PAL TV. - .. code-block:: c #define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) @@ -152,7 +147,6 @@ a 50/60 Hz agnostic PAL TV. ``V4L2_STD_NTSC_443`` is a hybrid standard with 525 lines, 60 Hz refresh rate, and NTSC color modulation with a 4.43 MHz color subcarrier. - .. code-block:: c #define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) @@ -175,7 +169,6 @@ terrestrial digital TV standards. Presently the V4L2 API does not support digital TV. See also the Linux DVB API at `https://linuxtv.org <https://linuxtv.org>`__. - .. code-block:: c #define V4L2_STD_PAL_BG (V4L2_STD_PAL_B | @@ -228,7 +221,6 @@ support digital TV. See also the Linux DVB API at #define V4L2_STD_ALL (V4L2_STD_525_60 | V4L2_STD_625_50) - .. raw:: latex \begingroup @@ -303,7 +295,6 @@ support digital TV. See also the Linux DVB API at \endgroup - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst index a2c475a83a58..212377c90442 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_EXPBUF: @@ -11,24 +12,22 @@ Name VIDIOC_EXPBUF - Export a buffer as a DMABUF file descriptor. - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_EXPBUF, struct v4l2_exportbuffer *argp ) - :name: VIDIOC_EXPBUF +.. c:macro:: VIDIOC_EXPBUF +``int ioctl(int fd, VIDIOC_EXPBUF, struct v4l2_exportbuffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_exportbuffer`. - Description =========== @@ -63,11 +62,9 @@ for details about importing DMABUF files into V4L2 nodes. It is recommended to close a DMABUF file when it is no longer used to allow the associated memory to be reclaimed. - Examples ======== - .. code-block:: c int buffer_export(int v4lfd, enum v4l2_buf_type bt, int index, int *dmafd) @@ -87,7 +84,6 @@ Examples return 0; } - .. code-block:: c int buffer_export_mp(int v4lfd, enum v4l2_buf_type bt, int index, @@ -114,7 +110,6 @@ Examples return 0; } - .. c:type:: v4l2_exportbuffer .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -155,7 +150,6 @@ Examples - Reserved field for future use. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst b/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst index 38667864355a..4c93bd55bd97 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_AUDIO: @@ -11,27 +12,26 @@ Name VIDIOC_G_AUDIO - VIDIOC_S_AUDIO - Query or select the current audio input and its attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_AUDIO, struct v4l2_audio *argp ) - :name: VIDIOC_G_AUDIO +.. c:macro:: VIDIOC_G_AUDIO + +``int ioctl(int fd, VIDIOC_G_AUDIO, struct v4l2_audio *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_AUDIO, const struct v4l2_audio *argp ) - :name: VIDIOC_S_AUDIO +.. c:macro:: VIDIOC_S_AUDIO +``int ioctl(int fd, VIDIOC_S_AUDIO, const struct v4l2_audio *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audio`. - Description =========== @@ -49,7 +49,6 @@ ioctl. Drivers may switch to a different audio mode if the request cannot be satisfied. However, this is a write-only ioctl, it does not return the actual new audio mode. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_audio @@ -80,7 +79,6 @@ return the actual new audio mode. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _audio-capability: @@ -101,7 +99,6 @@ return the actual new audio mode. - Automatic Volume Level mode is supported. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _audio-mode: @@ -115,7 +112,6 @@ return the actual new audio mode. - 0x00001 - AVL mode is on. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst b/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst index 5bf56723c7ba..194f22493517 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_AUDOUT: @@ -11,27 +12,26 @@ Name VIDIOC_G_AUDOUT - VIDIOC_S_AUDOUT - Query or select the current audio output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_AUDOUT, struct v4l2_audioout *argp ) - :name: VIDIOC_G_AUDOUT +.. c:macro:: VIDIOC_G_AUDOUT + +``int ioctl(int fd, VIDIOC_G_AUDOUT, struct v4l2_audioout *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_AUDOUT, const struct v4l2_audioout *argp ) - :name: VIDIOC_S_AUDOUT +.. c:macro:: VIDIOC_S_AUDOUT +``int ioctl(int fd, VIDIOC_S_AUDOUT, const struct v4l2_audioout *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audioout`. - Description =========== @@ -56,7 +56,6 @@ as ``VIDIOC_G_AUDOUT`` does. Connectors on a TV card to loop back the received audio signal to a sound card are not audio outputs in this sense. - .. c:type:: v4l2_audioout .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -87,7 +86,6 @@ as ``VIDIOC_G_AUDOUT`` does. - Reserved for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst b/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst index 735a6bf5e025..0ac1509e41cc 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_CROP: @@ -11,27 +12,26 @@ Name VIDIOC_G_CROP - VIDIOC_S_CROP - Get or set the current cropping rectangle - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_CROP, struct v4l2_crop *argp ) - :name: VIDIOC_G_CROP +.. c:macro:: VIDIOC_G_CROP + +``int ioctl(int fd, VIDIOC_G_CROP, struct v4l2_crop *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_CROP, const struct v4l2_crop *argp ) - :name: VIDIOC_S_CROP +.. c:macro:: VIDIOC_S_CROP +``int ioctl(int fd, VIDIOC_S_CROP, const struct v4l2_crop *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_crop`. - Description =========== @@ -69,7 +69,6 @@ been negotiated. When cropping is not supported then no parameters are changed and :ref:`VIDIOC_S_CROP <VIDIOC_G_CROP>` returns the ``EINVAL`` error code. - .. c:type:: v4l2_crop .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -100,7 +99,6 @@ When cropping is not supported then no parameters are changed and Starting with kernel 4.13 both variations are allowed. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst index d863c849be95..4f1bed53fad5 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_CTRL: @@ -11,27 +12,26 @@ Name VIDIOC_G_CTRL - VIDIOC_S_CTRL - Get or set the value of a control - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_CTRL, struct v4l2_control *argp ) - :name: VIDIOC_G_CTRL +.. c:macro:: VIDIOC_G_CTRL + +``int ioctl(int fd, VIDIOC_G_CTRL, struct v4l2_control *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_CTRL, struct v4l2_control *argp ) - :name: VIDIOC_S_CTRL +.. c:macro:: VIDIOC_S_CTRL +``int ioctl(int fd, VIDIOC_S_CTRL, struct v4l2_control *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_control`. - Description =========== @@ -55,7 +55,6 @@ These ioctls work only with user controls. For other control classes the :ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` or :ref:`VIDIOC_TRY_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` must be used. - .. c:type:: v4l2_control .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -72,7 +71,6 @@ These ioctls work only with user controls. For other control classes the - ``value`` - New value or current value. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst index e5a58db574d4..760a33d43b7d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_DV_TIMINGS: @@ -11,33 +12,34 @@ Name VIDIOC_G_DV_TIMINGS - VIDIOC_S_DV_TIMINGS - VIDIOC_SUBDEV_G_DV_TIMINGS - VIDIOC_SUBDEV_S_DV_TIMINGS - Get or set DV timings for input or output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_G_DV_TIMINGS +.. c:macro:: VIDIOC_G_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_G_DV_TIMINGS, struct v4l2_dv_timings *argp)`` + +.. c:macro:: VIDIOC_S_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_S_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_S_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_G_DV_TIMINGS -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_G_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_G_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_S_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_S_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_S_DV_TIMINGS, struct v4l2_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings`. - Description =========== @@ -60,7 +62,6 @@ the current input or output does not support DV timings (e.g. if :ref:`VIDIOC_ENUMINPUT` does not set the ``V4L2_IN_CAP_DV_TIMINGS`` flag), then ``ENODATA`` error code is returned. - Return Value ============ @@ -170,7 +171,6 @@ EPERM - Reserved for future extensions. Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{7.0cm}|p{3.5cm}| .. c:type:: v4l2_dv_timings diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst b/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst index 6a9ed2915cb9..39d523a449a7 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_EDID: @@ -11,34 +12,34 @@ Name VIDIOC_G_EDID - VIDIOC_S_EDID - VIDIOC_SUBDEV_G_EDID - VIDIOC_SUBDEV_S_EDID - Get or set the EDID of a video receiver/transmitter - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_G_EDID +.. c:macro:: VIDIOC_G_EDID + +``int ioctl(int fd, VIDIOC_G_EDID, struct v4l2_edid *argp)`` + +.. c:macro:: VIDIOC_S_EDID -.. c:function:: int ioctl( int fd, VIDIOC_S_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_S_EDID +``int ioctl(int fd, VIDIOC_S_EDID, struct v4l2_edid *argp)`` +.. c:macro:: VIDIOC_SUBDEV_G_EDID -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_SUBDEV_G_EDID +``int ioctl(int fd, VIDIOC_SUBDEV_G_EDID, struct v4l2_edid *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_SUBDEV_S_EDID +.. c:macro:: VIDIOC_SUBDEV_S_EDID +``int ioctl(int fd, VIDIOC_SUBDEV_S_EDID, struct v4l2_edid *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_edid`. - Description =========== @@ -97,7 +98,6 @@ this will drive the hotplug pin low and/or block the source from reading the EDID data in some way. In any case, the end result is the same: the EDID is no longer available. - .. c:type:: v4l2_edid .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -132,7 +132,6 @@ EDID is no longer available. - Pointer to memory that contains the EDID. The minimum size is ``blocks`` * 128. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst b/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst index 99cddf3b9888..7698e65ccccf 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_ENC_INDEX: @@ -11,24 +12,22 @@ Name VIDIOC_G_ENC_INDEX - Get meta data about a compressed video stream - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_ENC_INDEX, struct v4l2_enc_idx *argp ) - :name: VIDIOC_G_ENC_INDEX +.. c:macro:: VIDIOC_G_ENC_INDEX +``int ioctl(int fd, VIDIOC_G_ENC_INDEX, struct v4l2_enc_idx *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_enc_idx`. - Description =========== @@ -55,7 +54,6 @@ will be zero. Currently this ioctl is only defined for MPEG-2 program streams and video elementary streams. - .. tabularcolumns:: |p{3.8cm}|p{5.6cm}|p{8.1cm}| .. c:type:: v4l2_enc_idx @@ -83,7 +81,6 @@ video elementary streams. their ``offset``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_enc_idx_entry @@ -116,7 +113,6 @@ video elementary streams. - Reserved for future extensions. Drivers must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _enc-idx-flags: @@ -140,7 +136,6 @@ video elementary streams. - *AND* the flags field with this mask to obtain the picture coding type. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst index 0991af626591..f2173e310d67 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_EXT_CTRLS: @@ -11,32 +12,30 @@ Name VIDIOC_G_EXT_CTRLS - VIDIOC_S_EXT_CTRLS - VIDIOC_TRY_EXT_CTRLS - Get or set the value of several controls, try control values - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_G_EXT_CTRLS +.. c:macro:: VIDIOC_G_EXT_CTRLS +``int ioctl(int fd, VIDIOC_G_EXT_CTRLS, struct v4l2_ext_controls *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_S_EXT_CTRLS +.. c:macro:: VIDIOC_S_EXT_CTRLS +``int ioctl(int fd, VIDIOC_S_EXT_CTRLS, struct v4l2_ext_controls *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_TRY_EXT_CTRLS +.. c:macro:: VIDIOC_TRY_EXT_CTRLS +``int ioctl(int fd, VIDIOC_TRY_EXT_CTRLS, struct v4l2_ext_controls *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_ext_controls`. - Description =========== @@ -119,7 +118,6 @@ correct. This prevents the situation where only some of the controls were set/get. Only low-level errors (e. g. a failed i2c command) can still cause this situation. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{1.5cm}|p{11.8cm}| .. c:type:: v4l2_ext_control @@ -195,7 +193,6 @@ still cause this situation. * - } - - .. tabularcolumns:: |p{4.0cm}|p{2.2cm}|p{2.1cm}|p{8.2cm}| .. c:type:: v4l2_ext_controls @@ -309,7 +306,6 @@ still cause this situation. Ignored if ``count`` equals zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _ctrl-class: @@ -363,7 +359,6 @@ still cause this situation. - The class containing RF tuner controls. These controls are described in :ref:`rf-tuner-controls`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst index 7e1a0b812754..dc1f16343b22 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FBUF: @@ -11,27 +12,26 @@ Name VIDIOC_G_FBUF - VIDIOC_S_FBUF - Get or set frame buffer overlay parameters - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FBUF, struct v4l2_framebuffer *argp ) - :name: VIDIOC_G_FBUF +.. c:macro:: VIDIOC_G_FBUF + +``int ioctl(int fd, VIDIOC_G_FBUF, struct v4l2_framebuffer *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FBUF, const struct v4l2_framebuffer *argp ) - :name: VIDIOC_S_FBUF +.. c:macro:: VIDIOC_S_FBUF +``int ioctl(int fd, VIDIOC_S_FBUF, const struct v4l2_framebuffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_framebuffer`. - Description =========== @@ -75,7 +75,6 @@ jeopardize the system security, its stability or even damage the hardware, therefore only the superuser can set the parameters for a destructive video overlay. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_framebuffer @@ -208,7 +207,6 @@ destructive video overlay. - ``priv`` - Reserved. Drivers and applications must set this field to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _framebuffer-cap: @@ -257,7 +255,6 @@ destructive video overlay. chroma-key colors are replaced by framebuffer pixels, which is exactly opposite of ``V4L2_FBUF_CAP_CHROMAKEY`` - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _framebuffer-flags: @@ -332,7 +329,6 @@ destructive video overlay. other, so same ``chromakey`` field of struct :c:type:`v4l2_window` is being used. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst index 7d113451bfbc..7e9f8475ea63 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FMT: @@ -11,29 +12,30 @@ Name VIDIOC_G_FMT - VIDIOC_S_FMT - VIDIOC_TRY_FMT - Get or set the data format, try a format - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FMT, struct v4l2_format *argp ) - :name: VIDIOC_G_FMT +.. c:macro:: VIDIOC_G_FMT + +``int ioctl(int fd, VIDIOC_G_FMT, struct v4l2_format *argp)`` + +.. c:macro:: VIDIOC_S_FMT + +``int ioctl(int fd, VIDIOC_S_FMT, struct v4l2_format *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FMT, struct v4l2_format *argp ) - :name: VIDIOC_S_FMT +.. c:macro:: VIDIOC_TRY_FMT -.. c:function:: int ioctl( int fd, VIDIOC_TRY_FMT, struct v4l2_format *argp ) - :name: VIDIOC_TRY_FMT +``int ioctl(int fd, VIDIOC_TRY_FMT, struct v4l2_format *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_format`. - Description =========== @@ -85,7 +87,6 @@ recommended drivers are not required to implement this ioctl. The format as returned by :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` must be identical to what :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` returns for the same input or output. - .. c:type:: v4l2_format .. tabularcolumns:: |p{1.2cm}|p{4.6cm}|p{3.0cm}|p{8.6cm}| @@ -135,7 +136,6 @@ The format as returned by :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` must be identical * - } - - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst b/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst index da0d5dee72ff..5445a4a442e4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FREQUENCY: @@ -11,27 +12,26 @@ Name VIDIOC_G_FREQUENCY - VIDIOC_S_FREQUENCY - Get or set tuner or modulator radio frequency - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FREQUENCY, struct v4l2_frequency *argp ) - :name: VIDIOC_G_FREQUENCY +.. c:macro:: VIDIOC_G_FREQUENCY + +``int ioctl(int fd, VIDIOC_G_FREQUENCY, struct v4l2_frequency *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FREQUENCY, const struct v4l2_frequency *argp ) - :name: VIDIOC_S_FREQUENCY +.. c:macro:: VIDIOC_S_FREQUENCY +``int ioctl(int fd, VIDIOC_S_FREQUENCY, const struct v4l2_frequency *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frequency`. - Description =========== @@ -51,7 +51,6 @@ structure. When the requested frequency is not possible the driver assumes the closest possible value. However :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` is a write-only ioctl, it does not return the actual new frequency. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_frequency @@ -89,7 +88,6 @@ write-only ioctl, it does not return the actual new frequency. - Reserved for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-input.rst b/Documentation/userspace-api/media/v4l/vidioc-g-input.rst index f4637bc464f6..eee9ce51c797 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-input.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-input.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_INPUT: @@ -11,27 +12,26 @@ Name VIDIOC_G_INPUT - VIDIOC_S_INPUT - Query or select the current video input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_INPUT, int *argp ) - :name: VIDIOC_G_INPUT +.. c:macro:: VIDIOC_G_INPUT + +``int ioctl(int fd, VIDIOC_G_INPUT, int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_INPUT, int *argp ) - :name: VIDIOC_S_INPUT +.. c:macro:: VIDIOC_S_INPUT +``int ioctl(int fd, VIDIOC_S_INPUT, int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer an integer with input index. - Description =========== @@ -52,7 +52,6 @@ other parameters. Information about video inputs is available using the :ref:`VIDIOC_ENUMINPUT` ioctl. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst b/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst index 8721adc5ad70..93ed111dfcb9 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_JPEGCOMP: @@ -11,27 +12,26 @@ Name VIDIOC_G_JPEGCOMP - VIDIOC_S_JPEGCOMP - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_JPEGCOMP, v4l2_jpegcompression *argp ) - :name: VIDIOC_G_JPEGCOMP +.. c:macro:: VIDIOC_G_JPEGCOMP + +``int ioctl(int fd, VIDIOC_G_JPEGCOMP, v4l2_jpegcompression *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_JPEGCOMP, const v4l2_jpegcompression *argp ) - :name: VIDIOC_S_JPEGCOMP +.. c:macro:: VIDIOC_S_JPEGCOMP +``int ioctl(int fd, VIDIOC_S_JPEGCOMP, const v4l2_jpegcompression *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_jpegcompression`. - Description =========== @@ -54,7 +54,6 @@ stored in the JPEG-encoded fields. These define how the JPEG field is encoded. If you omit them, applications assume you've used standard encoding. You usually do want to add them. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{13.3cm}| .. c:type:: v4l2_jpegcompression @@ -92,7 +91,6 @@ encoding. You usually do want to add them. control is exposed by a driver applications should use it instead and ignore this field. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _jpeg-markers: @@ -118,7 +116,6 @@ encoding. You usually do want to add them. - (1<<7) - App segment, driver will always use APP0 - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst b/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst index baf499d0df74..2ac2473e341b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_MODULATOR: @@ -11,27 +12,26 @@ Name VIDIOC_G_MODULATOR - VIDIOC_S_MODULATOR - Get or set modulator attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_MODULATOR, struct v4l2_modulator *argp ) - :name: VIDIOC_G_MODULATOR +.. c:macro:: VIDIOC_G_MODULATOR + +``int ioctl(int fd, VIDIOC_G_MODULATOR, struct v4l2_modulator *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_MODULATOR, const struct v4l2_modulator *argp ) - :name: VIDIOC_S_MODULATOR +.. c:macro:: VIDIOC_S_MODULATOR +``int ioctl(int fd, VIDIOC_S_MODULATOR, const struct v4l2_modulator *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_modulator`. - Description =========== @@ -60,7 +60,6 @@ context. To change the radio frequency the :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl is available. - .. tabularcolumns:: |p{2.9cm}|p{2.9cm}|p{5.8cm}|p{2.9cm}|p{3.0cm}| .. c:type:: v4l2_modulator @@ -121,7 +120,6 @@ To change the radio frequency the Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _modulator-txsubchans: @@ -182,7 +180,6 @@ To change the radio frequency the - 0x0010 - Enable the RDS encoder for a radio FM transmitter. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst index 0afc55c67840..3138c4cc8fe3 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_OUTPUT: @@ -11,27 +12,26 @@ Name VIDIOC_G_OUTPUT - VIDIOC_S_OUTPUT - Query or select the current video output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_OUTPUT, int *argp ) - :name: VIDIOC_G_OUTPUT +.. c:macro:: VIDIOC_G_OUTPUT + +``int ioctl(int fd, VIDIOC_G_OUTPUT, int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_OUTPUT, int *argp ) - :name: VIDIOC_S_OUTPUT +.. c:macro:: VIDIOC_S_OUTPUT +``int ioctl(int fd, VIDIOC_S_OUTPUT, int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer with output index. - Description =========== @@ -53,7 +53,6 @@ negotiating any other parameters. Information about video outputs is available using the :ref:`VIDIOC_ENUMOUTPUT` ioctl. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst b/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst index 94f3af279bba..724f7fa7bae1 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_PARM: @@ -11,27 +12,26 @@ Name VIDIOC_G_PARM - VIDIOC_S_PARM - Get or set streaming parameters - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_PARM, v4l2_streamparm *argp ) - :name: VIDIOC_G_PARM +.. c:macro:: VIDIOC_G_PARM + +``int ioctl(int fd, VIDIOC_G_PARM, v4l2_streamparm *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_PARM, v4l2_streamparm *argp ) - :name: VIDIOC_S_PARM +.. c:macro:: VIDIOC_S_PARM +``int ioctl(int fd, VIDIOC_S_PARM, v4l2_streamparm *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_streamparm`. - Description =========== @@ -48,7 +48,7 @@ format, on the other hand, may change the frame interval. Further these ioctls can be used to determine the number of buffers used internally by a driver in read/write mode. For implications see the -section discussing the :ref:`read() <func-read>` function. +section discussing the :c:func:`read()` function. To get and set the streaming parameters applications call the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and @@ -56,7 +56,6 @@ To get and set the streaming parameters applications call the pointer to a struct :c:type:`v4l2_streamparm` which contains a union holding separate parameters for input and output devices. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_streamparm @@ -89,7 +88,6 @@ union holding separate parameters for input and output devices. - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_captureparm @@ -138,7 +136,7 @@ union holding separate parameters for input and output devices. * - __u32 - ``readbuffers`` - Applications set this field to the desired number of buffers used - internally by the driver in :ref:`read() <func-read>` mode. + internally by the driver in :c:func:`read()` mode. Drivers return the actual number of buffers. When an application requests zero buffers, drivers should just return the current setting rather than the minimum or an error code. For details see @@ -149,7 +147,6 @@ union holding separate parameters for input and output devices. the array to zero. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_outputparm @@ -172,7 +169,7 @@ union holding separate parameters for input and output devices. * - :cspan:`2` The field is intended to repeat frames on the driver side in - :ref:`write() <func-write>` mode (in streaming mode timestamps + :c:func:`write()` mode (in streaming mode timestamps can be used to throttle the output), saving I/O bandwidth. For stateful encoders (see :ref:`encoder`) this represents the @@ -199,7 +196,7 @@ union holding separate parameters for input and output devices. * - __u32 - ``writebuffers`` - Applications set this field to the desired number of buffers used - internally by the driver in :ref:`write() <func-write>` mode. Drivers + internally by the driver in :c:func:`write()` mode. Drivers return the actual number of buffers. When an application requests zero buffers, drivers should just return the current setting rather than the minimum or an error code. For details see @@ -210,7 +207,6 @@ union holding separate parameters for input and output devices. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _parm-caps: @@ -226,7 +222,6 @@ union holding separate parameters for input and output devices. field. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _parm-flags: @@ -265,8 +260,7 @@ union holding separate parameters for input and output devices. - Moving objects in the image might have excessive motion blur. - - Capture might only work through the :ref:`read() <func-read>` call. - + - Capture might only work through the :c:func:`read()` call. Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst b/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst index da3166ac6d08..d72a0c716fca 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_PRIORITY: @@ -11,27 +12,26 @@ Name VIDIOC_G_PRIORITY - VIDIOC_S_PRIORITY - Query or request the access priority associated with a file descriptor - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_PRIORITY, enum v4l2_priority *argp ) - :name: VIDIOC_G_PRIORITY +.. c:macro:: VIDIOC_G_PRIORITY + +``int ioctl(int fd, VIDIOC_G_PRIORITY, enum v4l2_priority *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_PRIORITY, const enum v4l2_priority *argp ) - :name: VIDIOC_S_PRIORITY +.. c:macro:: VIDIOC_S_PRIORITY +``int ioctl(int fd, VIDIOC_S_PRIORITY, const enum v4l2_priority *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an enum :c:type:`v4l2_priority` type. - Description =========== @@ -43,7 +43,6 @@ To request an access priority applications store the desired priority in an enum v4l2_priority variable and call :ref:`VIDIOC_S_PRIORITY <VIDIOC_G_PRIORITY>` ioctl with a pointer to this variable. - .. c:type:: v4l2_priority .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -78,7 +77,6 @@ with a pointer to this variable. it blocks any other fd from changing device properties. Usually applications which must not be interrupted, like video recording. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst b/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst index cda7a69ea130..9a9e589cce77 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_SELECTION: @@ -11,23 +12,22 @@ Name VIDIOC_G_SELECTION - VIDIOC_S_SELECTION - Get or set one of the selection rectangles - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_SELECTION, struct v4l2_selection *argp ) - :name: VIDIOC_G_SELECTION +.. c:macro:: VIDIOC_G_SELECTION +``int ioctl(int fd, VIDIOC_G_SELECTION, struct v4l2_selection *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_SELECTION, struct v4l2_selection *argp ) - :name: VIDIOC_S_SELECTION +.. c:macro:: VIDIOC_S_SELECTION +``int ioctl(int fd, VIDIOC_S_SELECTION, struct v4l2_selection *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_selection`. @@ -115,7 +115,6 @@ constraints. Selection targets and flags are documented in :ref:`v4l2-selections-common`. - .. _sel-const-adjust: .. kernel-figure:: constraints.svg @@ -128,7 +127,6 @@ Selection targets and flags are documented in - .. c:type:: v4l2_selection .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -168,7 +166,6 @@ Selection targets and flags are documented in Starting with kernel 4.13 both variations are allowed. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst b/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst index a3a7fb00350f..752f7f5fae73 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_SLICED_VBI_CAP: @@ -11,24 +12,22 @@ Name VIDIOC_G_SLICED_VBI_CAP - Query sliced VBI capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_SLICED_VBI_CAP, struct v4l2_sliced_vbi_cap *argp ) - :name: VIDIOC_G_SLICED_VBI_CAP +.. c:macro:: VIDIOC_G_SLICED_VBI_CAP +``int ioctl(int fd, VIDIOC_G_SLICED_VBI_CAP, struct v4l2_sliced_vbi_cap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_sliced_vbi_cap`. - Description =========== @@ -44,7 +43,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. The ``type`` field was added, and the ioctl changed from read-only to write-read, in Linux 2.6.19. - .. c:type:: v4l2_sliced_vbi_cap .. tabularcolumns:: |p{1.2cm}|p{4.2cm}|p{4.1cm}|p{4.0cm}|p{4.0cm}| @@ -120,7 +118,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. See also :ref:`vbi-525` and :ref:`vbi-625`. - .. raw:: latex \scriptsize @@ -183,7 +180,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. \normalsize - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-std.rst b/Documentation/userspace-api/media/v4l/vidioc-g-std.rst index 8a659a873528..da91fe07d9e0 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-std.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-std.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_STD: @@ -11,33 +12,34 @@ Name VIDIOC_G_STD - VIDIOC_S_STD - VIDIOC_SUBDEV_G_STD - VIDIOC_SUBDEV_S_STD - Query or select the video standard of the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_STD, v4l2_std_id *argp ) - :name: VIDIOC_G_STD +.. c:macro:: VIDIOC_G_STD + +``int ioctl(int fd, VIDIOC_G_STD, v4l2_std_id *argp)`` + +.. c:macro:: VIDIOC_S_STD -.. c:function:: int ioctl( int fd, VIDIOC_S_STD, const v4l2_std_id *argp ) - :name: VIDIOC_S_STD +``int ioctl(int fd, VIDIOC_S_STD, const v4l2_std_id *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_STD, v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_G_STD +.. c:macro:: VIDIOC_SUBDEV_G_STD -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_STD, const v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_S_STD +``int ioctl(int fd, VIDIOC_SUBDEV_G_STD, v4l2_std_id *argp)`` +.. c:macro:: VIDIOC_SUBDEV_S_STD + +``int ioctl(int fd, VIDIOC_SUBDEV_S_STD, const v4l2_std_id *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to :c:type:`v4l2_std_id`. - Description =========== diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst b/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst index e3ba5b18a357..116e66c01556 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_TUNER: @@ -11,27 +12,26 @@ Name VIDIOC_G_TUNER - VIDIOC_S_TUNER - Get or set tuner attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_TUNER, struct v4l2_tuner *argp ) - :name: VIDIOC_G_TUNER +.. c:macro:: VIDIOC_G_TUNER + +``int ioctl(int fd, VIDIOC_G_TUNER, struct v4l2_tuner *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_TUNER, const struct v4l2_tuner *argp ) - :name: VIDIOC_S_TUNER +.. c:macro:: VIDIOC_S_TUNER +``int ioctl(int fd, VIDIOC_S_TUNER, const struct v4l2_tuner *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_tuner`. - Description =========== @@ -59,7 +59,6 @@ to zero. The term 'tuner' means SDR receiver in this context. To change the radio frequency the :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl is available. - .. tabularcolumns:: |p{1.3cm}|p{3.0cm}|p{6.6cm}|p{6.6cm}| .. c:type:: v4l2_tuner @@ -183,7 +182,6 @@ To change the radio frequency the Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. c:type:: v4l2_tuner_type @@ -207,7 +205,6 @@ To change the radio frequency the - 5 - Tuner controls the RF part of a Software Digital Radio (SDR) - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-capability: @@ -299,7 +296,6 @@ To change the radio frequency the instead of 62.5 kHz. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-rxsubchans: @@ -338,7 +334,6 @@ To change the radio frequency the - The tuner receives an RDS channel. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-audmode: diff --git a/Documentation/userspace-api/media/v4l/vidioc-log-status.rst b/Documentation/userspace-api/media/v4l/vidioc-log-status.rst index 74b06dc68109..c218747be762 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-log-status.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-log-status.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_LOG_STATUS: @@ -11,20 +12,18 @@ Name VIDIOC_LOG_STATUS - Log driver status information - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_LOG_STATUS) - :name: VIDIOC_LOG_STATUS +.. c:macro:: VIDIOC_LOG_STATUS +``int ioctl(int fd, VIDIOC_LOG_STATUS)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -40,7 +39,6 @@ Mismatches may give an indication where the problem is. This ioctl is optional and not all drivers support it. It was introduced in Linux 2.6.15. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-overlay.rst b/Documentation/userspace-api/media/v4l/vidioc-overlay.rst index 8553fc7a6d8b..f2efaaba24c0 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-overlay.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-overlay.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_OVERLAY: @@ -11,24 +12,22 @@ Name VIDIOC_OVERLAY - Start or stop video overlay - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_OVERLAY, const int *argp ) - :name: VIDIOC_OVERLAY +.. c:macro:: VIDIOC_OVERLAY +``int ioctl(int fd, VIDIOC_OVERLAY, const int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer. - Description =========== @@ -41,7 +40,6 @@ Drivers do not support :ref:`VIDIOC_STREAMON` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` with ``V4L2_BUF_TYPE_VIDEO_OVERLAY``. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst b/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst index df003e5a65ac..45bb1eab2c2d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_PREPARE_BUF: @@ -11,24 +12,22 @@ Name VIDIOC_PREPARE_BUF - Prepare a buffer for I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_PREPARE_BUF, struct v4l2_buffer *argp ) - :name: VIDIOC_PREPARE_BUF +.. c:macro:: VIDIOC_PREPARE_BUF +``int ioctl(int fd, VIDIOC_PREPARE_BUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -41,7 +40,6 @@ in advance saves time during the actual I/O. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst index cd920d0b6adf..fbf8c5962d8a 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QBUF: @@ -11,27 +12,26 @@ Name VIDIOC_QBUF - VIDIOC_DQBUF - Exchange a buffer with the driver - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_QBUF +.. c:macro:: VIDIOC_QBUF + +``int ioctl(int fd, VIDIOC_QBUF, struct v4l2_buffer *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_DQBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_DQBUF +.. c:macro:: VIDIOC_DQBUF +``int ioctl(int fd, VIDIOC_DQBUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -142,13 +142,12 @@ API is used the ``m.fd`` fields of the passed array of struct By default ``VIDIOC_DQBUF`` blocks when no buffer is in the outgoing queue. When the ``O_NONBLOCK`` flag was given to the -:ref:`open() <func-open>` function, ``VIDIOC_DQBUF`` returns +:c:func:`open()` function, ``VIDIOC_DQBUF`` returns immediately with an ``EAGAIN`` error code when no buffer is available. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst index 6942e7e76897..5afdc4b4dc2d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERY_DV_TIMINGS: @@ -11,27 +12,26 @@ Name VIDIOC_QUERY_DV_TIMINGS - VIDIOC_SUBDEV_QUERY_DV_TIMINGS - Sense the DV preset received by the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_QUERY_DV_TIMINGS +.. c:macro:: VIDIOC_QUERY_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_QUERY_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_QUERY_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings`. - Description =========== @@ -65,7 +65,6 @@ and returns ``ERANGE``. In that case the application can call found timings with the hardware's capabilities in order to give more precise feedback to the user. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst b/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst index 1d7ecf2697af..6c615e893866 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYBUF: @@ -11,24 +12,22 @@ Name VIDIOC_QUERYBUF - Query the status of a buffer - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_QUERYBUF +.. c:macro:: VIDIOC_QUERYBUF +``int ioctl(int fd, VIDIOC_QUERYBUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -67,7 +66,6 @@ flags, they are meaningless in this context. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst index 80b7b79561f5..b512b1fbf9a3 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYCAP: @@ -11,24 +12,22 @@ Name VIDIOC_QUERYCAP - Query device capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYCAP, struct v4l2_capability *argp ) - :name: VIDIOC_QUERYCAP +.. c:macro:: VIDIOC_QUERYCAP +``int ioctl(int fd, VIDIOC_QUERYCAP, struct v4l2_capability *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_capability`. - Description =========== @@ -39,7 +38,6 @@ pointer to a struct :c:type:`v4l2_capability` which is filled by the driver. When the driver is not compatible with this specification the ioctl returns an ``EINVAL`` error code. - .. tabularcolumns:: |p{1.5cm}|p{2.5cm}|p{13cm}| .. c:type:: v4l2_capability @@ -132,7 +130,6 @@ specification the ioctl returns an ``EINVAL`` error code. zero. - .. tabularcolumns:: |p{6.1cm}|p{2.2cm}|p{8.7cm}| .. _device-capabilities: @@ -243,8 +240,8 @@ specification the ioctl returns an ``EINVAL`` error code. - The device supports the :ref:`metadata` capture interface. * - ``V4L2_CAP_READWRITE`` - 0x01000000 - - The device supports the :ref:`read() <rw>` and/or - :ref:`write() <rw>` I/O methods. + - The device supports the :c:func:`read()` and/or + :c:func:`write()` I/O methods. * - ``V4L2_CAP_ASYNCIO`` - 0x02000000 - The device supports the :ref:`asynchronous <async>` I/O methods. @@ -269,7 +266,6 @@ specification the ioctl returns an ``EINVAL`` error code. only appear in the ``capabilities`` field and never in the ``device_caps`` field. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index 559ad849f7b9..9b8716f90f12 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYCTRL: @@ -11,31 +12,29 @@ Name VIDIOC_QUERYCTRL - VIDIOC_QUERY_EXT_CTRL - VIDIOC_QUERYMENU - Enumerate controls and menu control items - Synopsis ======== -.. c:function:: int ioctl( int fd, int VIDIOC_QUERYCTRL, struct v4l2_queryctrl *argp ) - :name: VIDIOC_QUERYCTRL +``int ioctl(int fd, int VIDIOC_QUERYCTRL, struct v4l2_queryctrl *argp)`` + +.. c:macro:: VIDIOC_QUERY_EXT_CTRL -.. c:function:: int ioctl( int fd, VIDIOC_QUERY_EXT_CTRL, struct v4l2_query_ext_ctrl *argp ) - :name: VIDIOC_QUERY_EXT_CTRL +``int ioctl(int fd, VIDIOC_QUERY_EXT_CTRL, struct v4l2_query_ext_ctrl *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_QUERYMENU, struct v4l2_querymenu *argp ) - :name: VIDIOC_QUERYMENU +.. c:macro:: VIDIOC_QUERYMENU +``int ioctl(int fd, VIDIOC_QUERYMENU, struct v4l2_querymenu *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_queryctrl`, :c:type:`v4l2_query_ext_ctrl` or :c:type:`v4l2_querymenu` (depending on the ioctl). - Description =========== @@ -95,7 +94,6 @@ inclusive. See also the examples in :ref:`control`. - .. tabularcolumns:: |p{1.2cm}|p{3.6cm}|p{12.7cm}| .. _v4l2-queryctrl: @@ -174,7 +172,6 @@ See also the examples in :ref:`control`. zero. - .. tabularcolumns:: |p{1.2cm}|p{5.0cm}|p{11.3cm}| .. _v4l2-query-ext-ctrl: @@ -275,7 +272,6 @@ See also the examples in :ref:`control`. the array to zero. - .. tabularcolumns:: |p{1.2cm}|p{1.0cm}|p{1.7cm}|p{13.0cm}| .. _v4l2-querymenu: @@ -311,7 +307,6 @@ See also the examples in :ref:`control`. zero. - .. tabularcolumns:: |p{5.8cm}|p{1.4cm}|p{1.0cm}|p{1.4cm}|p{6.9cm}| .. c:type:: v4l2_ctrl_type @@ -582,7 +577,6 @@ See also the examples in :ref:`control`. streaming is in progress since most drivers do not support changing the format in that case. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querystd.rst b/Documentation/userspace-api/media/v4l/vidioc-querystd.rst index b043ec48cf9d..4a88287d8f61 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querystd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querystd.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYSTD: @@ -11,27 +12,26 @@ Name VIDIOC_QUERYSTD - VIDIOC_SUBDEV_QUERYSTD - Sense the video standard received by the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYSTD, v4l2_std_id *argp ) - :name: VIDIOC_QUERYSTD +.. c:macro:: VIDIOC_QUERYSTD + +``int ioctl(int fd, VIDIOC_QUERYSTD, v4l2_std_id *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERYSTD, v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_QUERYSTD +.. c:macro:: VIDIOC_SUBDEV_QUERYSTD +``int ioctl(int fd, VIDIOC_SUBDEV_QUERYSTD, v4l2_std_id *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to :c:type:`v4l2_std_id`. - Description =========== @@ -58,7 +58,6 @@ or output. standard is valid they will have to stop streaming, set the new standard, allocate new buffers and start streaming again. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst index afc35cd7b614..c1c88e00b106 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_REQBUFS: @@ -11,19 +12,18 @@ Name VIDIOC_REQBUFS - Initiate Memory Mapping, User Pointer I/O or DMA buffer I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_REQBUFS, struct v4l2_requestbuffers *argp ) - :name: VIDIOC_REQBUFS +.. c:macro:: VIDIOC_REQBUFS +``int ioctl(int fd, VIDIOC_REQBUFS, struct v4l2_requestbuffers *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_requestbuffers`. @@ -69,7 +69,6 @@ fds are closed. A ``count`` value of zero frees or orphans all buffers, after aborting or finishing any DMA in progress, an implicit :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>`. - .. c:type:: v4l2_requestbuffers .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -158,7 +157,6 @@ aborting or finishing any DMA in progress, an implicit :ref:`V4L2_BUF_FLAG_NO_CACHE_INVALIDATE <V4L2-BUF-FLAG-NO-CACHE-INVALIDATE>` and :ref:`V4L2_BUF_FLAG_NO_CACHE_CLEAN <V4L2-BUF-FLAG-NO-CACHE-CLEAN>`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst b/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst index fb09ea31cad7..1948f31c2dbc 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_S_HW_FREQ_SEEK: @@ -11,24 +12,22 @@ Name VIDIOC_S_HW_FREQ_SEEK - Perform a hardware frequency seek - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_S_HW_FREQ_SEEK, struct v4l2_hw_freq_seek *argp ) - :name: VIDIOC_S_HW_FREQ_SEEK +.. c:macro:: VIDIOC_S_HW_FREQ_SEEK +``int ioctl(int fd, VIDIOC_S_HW_FREQ_SEEK, struct v4l2_hw_freq_seek *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_hw_freq_seek`. - Description =========== @@ -59,7 +58,6 @@ set. If this ioctl is called from a non-blocking filehandle, then ``EAGAIN`` error code is returned and no seek takes place. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_hw_freq_seek @@ -116,7 +114,6 @@ error code is returned and no seek takes place. - Reserved for future extensions. Applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-streamon.rst b/Documentation/userspace-api/media/v4l/vidioc-streamon.rst index d9623aa7c425..0bc86f06947b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-streamon.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-streamon.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_STREAMON: @@ -11,22 +12,22 @@ Name VIDIOC_STREAMON - VIDIOC_STREAMOFF - Start or stop streaming I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_STREAMON, const int *argp ) - :name: VIDIOC_STREAMON +.. c:macro:: VIDIOC_STREAMON + +``int ioctl(int fd, VIDIOC_STREAMON, const int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_STREAMOFF, const int *argp ) - :name: VIDIOC_STREAMOFF +.. c:macro:: VIDIOC_STREAMOFF +``int ioctl(int fd, VIDIOC_STREAMOFF, const int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer. @@ -84,7 +85,6 @@ state as mentioned above. no notion of starting or stopping "now". Buffer timestamps can be used to synchronize with other events. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst index 932e8416f11c..17acf3fd8396 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: @@ -11,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - Enumerate frame intervals - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_interval_enum`. - Description =========== @@ -97,7 +96,6 @@ multiple pads of the same sub-device is not defined. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst index 3c480573df59..8016fba7023f 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_FRAME_SIZE: @@ -11,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_FRAME_SIZE - Enumerate media bus frame sizes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, struct v4l2_subdev_frame_size_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_FRAME_SIZE +.. c:macro:: VIDIOC_SUBDEV_ENUM_FRAME_SIZE +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, struct v4l2_subdev_frame_size_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_size_enum`. - Description =========== @@ -62,7 +61,6 @@ current values of V4L2 controls. See :ref:`VIDIOC_SUBDEV_G_FMT` for more information about try formats. - .. c:type:: v4l2_subdev_frame_size_enum .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -103,7 +101,6 @@ information about try formats. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst index 3b6a8044c391..1fd950e34a0b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_MBUS_CODE: @@ -11,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_MBUS_CODE - Enumerate media bus formats - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_MBUS_CODE, struct v4l2_subdev_mbus_code_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_MBUS_CODE +.. c:macro:: VIDIOC_SUBDEV_ENUM_MBUS_CODE +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_MBUS_CODE, struct v4l2_subdev_mbus_code_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_mbus_code_enum`. - Description =========== @@ -47,7 +46,6 @@ other pads of the sub-device, as well as on the current active links. See :ref:`VIDIOC_SUBDEV_G_FMT` for more information about the try formats. - .. c:type:: v4l2_subdev_mbus_code_enum .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst index 45c988b13ba6..2d78b4f5928d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_CROP: @@ -11,27 +12,26 @@ Name VIDIOC_SUBDEV_G_CROP - VIDIOC_SUBDEV_S_CROP - Get or set the crop rectangle on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_CROP, struct v4l2_subdev_crop *argp ) - :name: VIDIOC_SUBDEV_G_CROP +.. c:macro:: VIDIOC_SUBDEV_G_CROP + +``int ioctl(int fd, VIDIOC_SUBDEV_G_CROP, struct v4l2_subdev_crop *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_CROP, const struct v4l2_subdev_crop *argp ) - :name: VIDIOC_SUBDEV_S_CROP +.. c:macro:: VIDIOC_SUBDEV_S_CROP +``int ioctl(int fd, VIDIOC_SUBDEV_S_CROP, const struct v4l2_subdev_crop *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_crop`. - Description =========== @@ -76,7 +76,6 @@ rectangle doesn't match the device capabilities. They must instead modify the rectangle to match what the hardware can provide. The modified format should be as close as possible to the original request. - .. c:type:: v4l2_subdev_crop .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -101,7 +100,6 @@ modified format should be as close as possible to the original request. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst index 76ce46f53c76..90b9bbfb61dd 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_FMT: @@ -11,27 +12,26 @@ Name VIDIOC_SUBDEV_G_FMT - VIDIOC_SUBDEV_S_FMT - Get or set the data format on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_FMT, struct v4l2_subdev_format *argp ) - :name: VIDIOC_SUBDEV_G_FMT +.. c:macro:: VIDIOC_SUBDEV_G_FMT + +``int ioctl(int fd, VIDIOC_SUBDEV_G_FMT, struct v4l2_subdev_format *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_FMT, struct v4l2_subdev_format *argp ) - :name: VIDIOC_SUBDEV_S_FMT +.. c:macro:: VIDIOC_SUBDEV_S_FMT +``int ioctl(int fd, VIDIOC_SUBDEV_S_FMT, struct v4l2_subdev_format *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_format`. - Description =========== @@ -81,7 +81,6 @@ doesn't match the device capabilities. They must instead modify the format to match what the hardware can provide. The modified format should be as close as possible to the original request. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_subdev_format @@ -108,7 +107,6 @@ should be as close as possible to the original request. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _v4l2-subdev-format-whence: @@ -125,7 +123,6 @@ should be as close as possible to the original request. - 1 - Active formats, applied to the hardware. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst index 7e0b177e70aa..3a50f8b2843d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_FRAME_INTERVAL: @@ -11,27 +12,26 @@ Name VIDIOC_SUBDEV_G_FRAME_INTERVAL - VIDIOC_SUBDEV_S_FRAME_INTERVAL - Get or set the frame interval on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp ) - :name: VIDIOC_SUBDEV_G_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_G_FRAME_INTERVAL + +``int ioctl(int fd, VIDIOC_SUBDEV_G_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp ) - :name: VIDIOC_SUBDEV_S_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_S_FRAME_INTERVAL +``int ioctl(int fd, VIDIOC_SUBDEV_S_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_interval`. - Description =========== @@ -74,7 +74,6 @@ Sub-devices that support the frame interval ioctls should implement them on a single pad only. Their behaviour when supported on multiple pads of the same sub-device is not defined. - .. c:type:: v4l2_subdev_frame_interval .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -95,7 +94,6 @@ the same sub-device is not defined. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst index 948903a34d6f..f35b9562df21 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_SELECTION: @@ -11,27 +12,26 @@ Name VIDIOC_SUBDEV_G_SELECTION - VIDIOC_SUBDEV_S_SELECTION - Get or set selection rectangles on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_SELECTION, struct v4l2_subdev_selection *argp ) - :name: VIDIOC_SUBDEV_G_SELECTION +.. c:macro:: VIDIOC_SUBDEV_G_SELECTION + +``int ioctl(int fd, VIDIOC_SUBDEV_G_SELECTION, struct v4l2_subdev_selection *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_SELECTION, struct v4l2_subdev_selection *argp ) - :name: VIDIOC_SUBDEV_S_SELECTION +.. c:macro:: VIDIOC_SUBDEV_S_SELECTION +``int ioctl(int fd, VIDIOC_SUBDEV_S_SELECTION, struct v4l2_subdev_selection *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_selection`. - Description =========== @@ -58,7 +58,6 @@ There are two types of selection targets: actual and bounds. The actual targets are the targets which configure the hardware. The BOUNDS target will return a rectangle that contain all possible actual rectangles. - Discovering supported features ------------------------------ @@ -69,7 +68,6 @@ return ``EINVAL``. Selection targets and flags are documented in :ref:`v4l2-selections-common`. - .. c:type:: v4l2_subdev_selection .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -100,7 +98,6 @@ Selection targets and flags are documented in - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst index e806385ba176..949d9775b03d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_QUERYCAP: @@ -11,24 +12,22 @@ Name VIDIOC_SUBDEV_QUERYCAP - Query sub-device capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERYCAP, struct v4l2_subdev_capability *argp ) - :name: VIDIOC_SUBDEV_QUERYCAP +.. c:macro:: VIDIOC_SUBDEV_QUERYCAP +``int ioctl(int fd, VIDIOC_SUBDEV_QUERYCAP, struct v4l2_subdev_capability *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_capability`. - Description =========== diff --git a/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst b/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst index 67827671bbaa..d1ad35164033 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst @@ -1,4 +1,5 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBSCRIBE_EVENT: .. _VIDIOC_UNSUBSCRIBE_EVENT: @@ -12,34 +13,32 @@ Name VIDIOC_SUBSCRIBE_EVENT - VIDIOC_UNSUBSCRIBE_EVENT - Subscribe or unsubscribe event - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBSCRIBE_EVENT, struct v4l2_event_subscription *argp ) - :name: VIDIOC_SUBSCRIBE_EVENT +.. c:macro:: VIDIOC_SUBSCRIBE_EVENT + +``int ioctl(int fd, VIDIOC_SUBSCRIBE_EVENT, struct v4l2_event_subscription *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_UNSUBSCRIBE_EVENT, struct v4l2_event_subscription *argp ) - :name: VIDIOC_UNSUBSCRIBE_EVENT +.. c:macro:: VIDIOC_UNSUBSCRIBE_EVENT +``int ioctl(int fd, VIDIOC_UNSUBSCRIBE_EVENT, struct v4l2_event_subscription *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_event_subscription`. - Description =========== Subscribe or unsubscribe V4L2 event. Subscribed events are dequeued by using the :ref:`VIDIOC_DQEVENT` ioctl. - .. tabularcolumns:: |p{4.6cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_subscription @@ -72,7 +71,6 @@ using the :ref:`VIDIOC_DQEVENT` ioctl. the array to zero. - .. tabularcolumns:: |p{6.8cm}|p{2.2cm}|p{8.5cm}| .. _event-flags: @@ -107,7 +105,6 @@ using the :ref:`VIDIOC_DQEVENT` ioctl. Think carefully when you set this flag so you won't get into situations like that. - Return Value ============ |