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v4l2src: Ignore non-increasing sequence number

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With older kernel, older driver or just broken drivers, the sequence number
may not be increasing. This simply ignore the sequence in this case. This
would otherwise miss-leading large amount of lost frame being reported.

Fixes #729

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/598>
This commit is contained in:
Nicolas Dufresne 2020-05-20 17:30:59 -04:00 committed by GStreamer Merge Bot
parent 8a8c8afc86
commit bfb1506381
1 changed files with 3 additions and 1 deletions
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4
sys/v4l2/gstv4l2src.c
View file

@ -978,7 +978,9 @@ retry:
/* use generated offset values only if there are not already valid ones
* set by the v4l2 device */
if (!GST_BUFFER_OFFSET_IS_VALID (*buf)
|| !GST_BUFFER_OFFSET_END_IS_VALID (*buf)) {
|| !GST_BUFFER_OFFSET_END_IS_VALID (*buf)
|| GST_BUFFER_OFFSET (*buf) <=
(v4l2src->offset - v4l2src->renegotiation_adjust)) {
GST_BUFFER_OFFSET (*buf) = v4l2src->offset;
GST_BUFFER_OFFSET_END (*buf) = v4l2src->offset + 1;
if (!half_frame || !v4l2src->next_offset_same)