diff options
| author | Benjamin Gaignard <benjamin.gaignard@collabora.com> | 2023-05-24 11:07:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-13 10:42:20 +0300 |
| commit | b608025733579f4e9074a26dc08ea05f0e07ea0f (patch) | |
| tree | 7920ef60109ba6aea6190e35a5146772defa4b17 /Documentation/userspace-api/media | |
| parent | 36148a9b144c45a0810fb012151b5720a0c8b82e (diff) | |
| download | linux-b608025733579f4e9074a26dc08ea05f0e07ea0f.tar.xz | |
media: uapi: HEVC: Add num_delta_pocs_of_ref_rps_idx field
[ Upstream commit ae440c5da33cdb90a109f2df2a0360c67b3fab7e ]
Some drivers firmwares parse by themselves slice header and need
num_delta_pocs_of_ref_rps_idx value to parse slice header
short_term_ref_pic_set().
Use one of the 4 reserved bytes to store this value without
changing the v4l2_ctrl_hevc_decode_params structure size and padding.
This value also exist in DXVA API.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: fix typo in num_delta_pocs_of_ref_rps_idx doc]
Stable-dep-of: 297160d411e3 ("media: mediatek: vcodec: move core context from device to each instance")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation/userspace-api/media')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst index cd33857d947d..0ef49647c90b 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst @@ -2923,6 +2923,13 @@ This structure contains all loop filter related parameters. See sections - ``poc_lt_curr[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]`` - PocLtCurr as described in section 8.3.2 "Decoding process for reference picture set": provides the index of the long term references in DPB array. + * - __u8 + - ``num_delta_pocs_of_ref_rps_idx`` + - When the short_term_ref_pic_set_sps_flag in the slice header is equal to 0, + it is the same as the derived value NumDeltaPocs[RefRpsIdx]. It can be used to parse + the RPS data in slice headers instead of skipping it with @short_term_ref_pic_set_size. + When the value of short_term_ref_pic_set_sps_flag in the slice header is + equal to 1, num_delta_pocs_of_ref_rps_idx shall be set to 0. * - struct :c:type:`v4l2_hevc_dpb_entry` - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]`` - The decoded picture buffer, for meta-data about reference frames. |