v4l2: Add support for querying capabilities

This adds a helper function to query v4l2 capabilities, returning either the device caps when available or the general device caps otherwise. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
2018-08-06 16:38:48 +02:00
parent 7d1ac10517
commit 57999e3883
2 changed files with 22 additions and 0 deletions
@@ -29,6 +29,7 @@

 #define SOURCE_SIZE_MAX						(1024 * 1024)

+int v4l2_query_capabilities(int video_fd, unsigned int *capabilities);
 bool v4l2_find_format(int video_fd, unsigned int type,
 		      unsigned int pixelformat);
 int v4l2_set_format(int video_fd, unsigned int type, unsigned int pixelformat,