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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2010-08-27 13:41:44 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-10-21 01:06:18 -0200
commit79c6ff93c74e793ccceb464ee3698478c812ce79 (patch)
tree9750ba1a7d14619e8e74449513af0a31ccf8c803 /include
parent45f4d4e8799ff1d7ef72747203935f1f2533743d (diff)
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.h8
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] */

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