kernel/linux.git/include/uapi/linux/v4l2-mediabus.h, branch v6.12.80

media: uapi: Document which mbus format fields are valid for metadata

2024-04-29T12:56:36+00:00

Now that metadata mbus formats have been added, it is necessary to define which fields in struct v4l2_mbus_format are applicable to them (not many). Signed-off-by: Sakari Ailus Reviewed-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart Signed-off-by: Hans Verkuil

headers: Remove some left-over license text in include/uapi/linux/v4l2-*

2022-12-07T16:58:46+00:00

Remove some left-over from commit e2be04c7f995 ("License cleanup: add SPDX license identifier to uapi header files with a license") When the SPDX-License-Identifier tag has been added, the corresponding license text has not been removed. Remove it now. Signed-off-by: Christophe JAILLET Signed-off-by: Hans Verkuil

media: v4l2: extend the CSC API to subdevice.

2020-09-26T08:22:29+00:00

This patch extends the CSC API in video devices to be supported also on sub-devices. The flag V4L2_MBUS_FRAMEFMT_SET_CSC set by the application when calling VIDIOC_SUBDEV_S_FMT ioctl. The flags: V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE, V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC, V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC/V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION are set by the driver in the VIDIOC_SUBDEV_ENUM_MBUS_CODE ioctl. New 'flags' fields were added to the structs v4l2_subdev_mbus_code_enum, v4l2_mbus_framefmt which are borrowed from the 'reserved' field The patch also replaces the 'ycbcr_enc' field in 'struct v4l2_mbus_framefmt' with a union that includes 'hsv_enc' Signed-off-by: Dafna Hirschfeld Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: v4l: doc: Clarify v4l2_mbus_fmt height definition

2018-02-26T13:15:50+00:00

The v4l2_mbus_fmt width and height corresponds directly with the v4l2_pix_format definitions, yet the differences in documentation make it ambiguous what to do in the event of field heights. Clarify this using the same text as is provided for the v4l2_pix_format which is explicit on the matter, and by matching the terminology of 'image height' rather than the misleading 'frame height'. Signed-off-by: Kieran Bingham Acked-by: Sakari Ailus Reviewed-by: Niklas Söderlund Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02T10:20:11+00:00

Many user space API headers have licensing information, which is either incomplete, badly formatted or just a shorthand for referring to the license under which the file is supposed to be. This makes it hard for compliance tools to determine the correct license. Update these files with an SPDX license identifier. The identifier was chosen based on the license information in the file. GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license identifier with the added 'WITH Linux-syscall-note' exception, which is the officially assigned exception identifier for the kernel syscall exception: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". This exception makes it possible to include GPL headers into non GPL code, without confusing license compliance tools. Headers which have either explicit dual licensing or are just licensed under a non GPL license are updated with the corresponding SPDX identifier and the GPLv2 with syscall exception identifier. The format is: ((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE) SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. The update does not remove existing license information as this has to be done on a case by case basis and the copyright holders might have to be consulted. This will happen in a separate step. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

[media] videodev2.h: add support for transfer functions

2015-06-05T14:45:45+00:00

In the past the transfer function was implied by the colorspace. However, it is an independent entity in its own right. Add support for explicitly choosing the transfer function. This change will allow us to represent linear RGB (as is used by openGL), and it will make it easier to work with decoded video material since most codecs store the transfer function as a separate property as well. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-mediabus.h: use two u16 instead of two u32

2014-12-17T01:21:36+00:00

The ycbcr_enc and quantization fields do not need a __u32. Switch to two __u16 types, thus preserving alignment and avoiding holes in the struct. This makes one more __u32 available for future expansion. Suggested by Sakari Ailus. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-mediabus: improve colorspace support

2014-12-01T17:34:55+00:00

Add and copy the new ycbcr_enc and quantization fields. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l: Forbid usage of V4L2_MBUS_FMT definitions inside the kernel

2014-11-14T19:56:18+00:00

Place v4l2_mbus_pixelcode in a #ifndef __KERNEL__ section so that kernel users don't have access to these definitions. We have to keep this definition for user-space users even though they're encouraged to move to the new media_bus_format enum. Signed-off-by: Boris Brezillon Acked-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] Move mediabus format definition to a more standard place

2014-11-14T19:47:47+00:00

Define MEDIA_BUS_FMT macros (re-using the values defined in the v4l2_mbus_pixelcode enum) into a separate header file so that they can be used from the DRM/KMS subsystem without any reference to the V4L2 subsystem. Then set V4L2_MBUS_FMT definitions to the MEDIA_BUS_FMT values using the V4L2_MBUS_FROM_MEDIA_BUS_FMT macro. Signed-off-by: Boris Brezillon Acked-by: Guennadi Liakhovetski Acked-by: Hans Verkuil Acked-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab