lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

V4L/DVB: V4L2: add a generic function to find the nearest discrete format to the required one

Browse Source 
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>
This commit is contained in:
Guennadi Liakhovetski
2010-08-27 13:41:44 -03:00
committed by Mauro Carvalho Chehab
parent 45f4d4e879
commit 79c6ff93c7
2 changed files with 32 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/linux/videodev2.h
View File

@ -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] */