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| author |   Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-07-26 09:30:50 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-30 19:32:50 -0300 |
| commit | a1367f1b260d29e9b9fb20d8e2f39f1e74fa6c3b (patch) | |
| tree | 2320caadb225499850ebb02aafeaef4f86c168ca /Documentation | |
| parent | [media] V4L: Add capability flags for memory-to-memory devices (diff) | |
| download | linux-dev-a1367f1b260d29e9b9fb20d8e2f39f1e74fa6c3b.tar.xz linux-dev-a1367f1b260d29e9b9fb20d8e2f39f1e74fa6c3b.zip | |
[media] Feature removal: using capture and output capabilities for m2m devices
Identifying a memory-to-memory video device through an ORed output and
capture capability flags is not reliable. Schedule this for removal.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index b99803066b7b..dbefb17b821d 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -576,3 +576,17 @@ Why: The regular V4L2 selections and the subdev selection API originally any instabilities in the user space interface. After few cycles these backward compatibility definitions will be removed. Who: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> + +---------------------------- + +What: Using V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags + to indicate a V4L2 memory-to-memory device capability +When: 3.8 +Why: New drivers should use new V4L2_CAP_VIDEO_M2M capability flag + to indicate a V4L2 video memory-to-memory (M2M) device and + applications can now identify a M2M video device by checking + for V4L2_CAP_VIDEO_M2M, with VIDIOC_QUERYCAP ioctl. Using ORed + V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags for M2M + devices is ambiguous and may lead, for example, to identifying + a M2M device as a video capture or output device. +Who: Sylwester Nawrocki <s.nawrocki@samsung.com> |