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authorHans Verkuil <hans.verkuil@cisco.com>2016-07-14 13:59:12 +0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-11-16 20:20:03 +0300
commit652430763f9f48af0fea83ef9a6fecf7680d9210 (patch)
treebcf112b150f33f8f78d3ddd057d526877cc6da89 /include/media
parentcf0381205dec0ab10b0a17ac016c593cc7a0077f (diff)
downloadlinux-652430763f9f48af0fea83ef9a6fecf7680d9210.tar.xz
[media] v4l2-dv-timings: add helpers for vic and pixelaspect ratio
Add a helper to find timings based on the CEA-861 VIC code. Also, add a helper that returns the pixel aspect ratio based on the v4l2_dv_timings struct. [mchehab@s-opensource.com: fix coding style] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-dv-timings.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h
index 0a7d9e1fc8c8..61a18893e004 100644
--- a/include/media/v4l2-dv-timings.h
+++ b/include/media/v4l2-dv-timings.h
@@ -101,12 +101,22 @@ bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
void *fnc_handle);
/**
+ * v4l2_find_dv_timings_cea861_vic() - find timings based on CEA-861 VIC
+ * @t: the timings data.
+ * @vic: CEA-861 VIC code
+ *
+ * On success it will fill in @t with the found timings and it returns true.
+ * On failure it will return false.
+ */
+bool v4l2_find_dv_timings_cea861_vic(struct v4l2_dv_timings *t, u8 vic);
+
+/**
* v4l2_match_dv_timings() - do two timings match?
*
* @measured: the measured timings data.
* @standard: the timings according to the standard.
* @pclock_delta: maximum delta in Hz between standard->pixelclock and
- * the measured timings.
+ * the measured timings.
* @match_reduced_fps: if true, then fail if V4L2_DV_FL_REDUCED_FPS does not
* match.
*
@@ -185,6 +195,14 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
*/
struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
+/**
+ * v4l2_dv_timings_aspect_ratio - calculate the aspect ratio based on the
+ * v4l2_dv_timings information.
+ *
+ * @t: the timings data.
+ */
+struct v4l2_fract v4l2_dv_timings_aspect_ratio(const struct v4l2_dv_timings *t);
+
/*
* reduce_fps - check if conditions for reduced fps are true.
* bt - v4l2 timing structure