diff options
| author |   Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2019-02-04 05:11:33 -0500 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-02-18 14:44:20 -0500 |
| commit | 7e4e71624491d8a8befe62b43138beb0ab696006 (patch) | |
| tree | 9783e7926080cdfdad2b53d7c582eea07f0d7c56 /drivers/media/common/videobuf2 | |
| parent | media: vb2: replace bool by bitfield in vb2_buffer (diff) | |
| download | wireguard-linux-7e4e71624491d8a8befe62b43138beb0ab696006.tar.xz wireguard-linux-7e4e71624491d8a8befe62b43138beb0ab696006.zip | |
media: vb2: keep track of timestamp status
If a stream is stopped, or if a USERPTR/DMABUF buffer is queued
backed by a different user address or dmabuf fd, then the timestamp
should be skipped by vb2_find_timestamp since the memory it refers
to is no longer valid.
So keep track of a 'copied_timestamp' state: it is set when the
timestamp is copied from an output to a capture buffer, and is
cleared when it is no longer valid.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/common/videobuf2')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-core.c | 3 | ||||
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-v4l2.c | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index b4457edc3245..275cddd8808c 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -1041,6 +1041,7 @@ static int __prepare_userptr(struct vb2_buffer *vb) if (vb->planes[plane].mem_priv) { if (!reacquired) { reacquired = true; + vb->copied_timestamp = 0; call_void_vb_qop(vb, buf_cleanup, vb); } call_void_memop(vb, put_userptr, vb->planes[plane].mem_priv); @@ -1165,6 +1166,7 @@ static int __prepare_dmabuf(struct vb2_buffer *vb) if (!reacquired) { reacquired = true; + vb->copied_timestamp = 0; call_void_vb_qop(vb, buf_cleanup, vb); } @@ -1942,6 +1944,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q) if (vb->request) media_request_put(vb->request); vb->request = NULL; + vb->copied_timestamp = 0; } } diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 3aeaea3af42a..55277370c313 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -604,7 +604,8 @@ int vb2_find_timestamp(const struct vb2_queue *q, u64 timestamp, unsigned int i; for (i = start_idx; i < q->num_buffers; i++) - if (q->bufs[i]->timestamp == timestamp) + if (q->bufs[i]->copied_timestamp && + q->bufs[i]->timestamp == timestamp) return i; return -1; } |