diff options
| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2018-10-24 06:51:01 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-01-07 13:19:48 -0500 |
| commit | 245ede423b43a6e081e94e0e5d4e895bd1f31228 (patch) | |
| tree | ac7bbb0d68e33af0c5edc24a1c63e0b5c6a56099 /drivers/media/common/videobuf2/videobuf2-v4l2.c | |
| parent | c2eb8effb265ac5cdd960d8e61ecb931e9c767cd (diff) | |
media: vb2: add vb2_find_timestamp()
Use v4l2_timeval_to_ns instead of timeval_to_ns to ensure that
both kernelspace and userspace will use the same conversion
function.
Next add a new vb2_find_timestamp() function to find buffers
with a specific timestamp.
This function will only look at DEQUEUED and DONE buffers, i.e.
buffers that are already processed.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/common/videobuf2/videobuf2-v4l2.c')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-v4l2.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 3a0ca2f9854f..75ea90e795d8 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -143,7 +143,7 @@ static void __copy_timestamp(struct vb2_buffer *vb, const void *pb) * and the timecode field and flag if needed. */ if (q->copy_timestamp) - vb->timestamp = timeval_to_ns(&b->timestamp); + vb->timestamp = v4l2_timeval_to_ns(&b->timestamp); vbuf->flags |= b->flags & V4L2_BUF_FLAG_TIMECODE; if (b->flags & V4L2_BUF_FLAG_TIMECODE) vbuf->timecode = b->timecode; @@ -589,6 +589,23 @@ static const struct vb2_buf_ops v4l2_buf_ops = { .copy_timestamp = __copy_timestamp, }; +int vb2_find_timestamp(const struct vb2_queue *q, u64 timestamp, + unsigned int start_idx) +{ + unsigned int i; + + for (i = start_idx; i < q->num_buffers; i++) { + struct vb2_buffer *vb = q->bufs[i]; + + if ((vb->state == VB2_BUF_STATE_DEQUEUED || + vb->state == VB2_BUF_STATE_DONE) && + vb->timestamp == timestamp) + return i; + } + return -1; +} +EXPORT_SYMBOL_GPL(vb2_find_timestamp); + /* * vb2_querybuf() - query video buffer information * @q: videobuf queue |