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| author | Guennadi Liakhovetski | 2010-08-27 18:41:44 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2010-10-21 05:06:18 +0200 |
| commit | 79c6ff93c74e793ccceb464ee3698478c812ce79 (patch) | |
| tree | 9750ba1a7d14619e8e74449513af0a31ccf8c803 /include | |
| parent | V4L/DVB: mx2_camera: add informative camera clock frequency printout (diff) | |
| download | kernel-qcow2-linux-79c6ff93c74e793ccceb464ee3698478c812ce79.tar.gz kernel-qcow2-linux-79c6ff93c74e793ccceb464ee3698478c812ce79.tar.xz kernel-qcow2-linux-79c6ff93c74e793ccceb464ee3698478c812ce79.zip | |
V4L/DVB: V4L2: add a generic function to find the nearest discrete format to the required one
Many video drivers implement a fixed set of frame formats and thus face a task
of finding the best match for a user-requested format. Implementing this in a
generic function has also an advantage, that different drivers with similar
supported format sets will select the same format for the user, which improves
consistency across drivers.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/videodev2.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index b06479f63271..957d5b093847 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -397,6 +397,14 @@ struct v4l2_frmsize_discrete { __u32 height; /* Frame height [pixel] */ }; +struct v4l2_discrete_probe { + const struct v4l2_frmsize_discrete *sizes; + int num_sizes; +}; + +struct v4l2_frmsize_discrete *v4l2_find_nearest_format(struct v4l2_discrete_probe *probe, + s32 width, s32 height); + struct v4l2_frmsize_stepwise { __u32 min_width; /* Minimum frame width [pixel] */ __u32 max_width; /* Maximum frame width [pixel] */ |