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| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2019-03-06 16:13:21 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-03-25 13:24:47 -0400 |
| commit | 90675d391e9196e95a9e9e31eaa9693d4a995927 (patch) | |
| tree | d2575cb8064666b5453bea364890eb9fd9170fef /include/media | |
| parent | b60a5b8dcf49af9f2c60ae82e0383ee8e62a9a52 (diff) | |
| download | linux-90675d391e9196e95a9e9e31eaa9693d4a995927.tar.bz2 | |
media: vb2: add requires_requests bit for stateless codecs
Stateless codecs require the use of the Request API as opposed of it
being optional.
So add a bit to indicate this and let vb2 check for this.
If an attempt is made to queue a buffer without an associated request,
then the EBADR error is returned to userspace.
Doing this check in the vb2 core simplifies drivers, since they
don't have to check for this, they can just set this flag.
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 'include/media')
| -rw-r--r-- | include/media/videobuf2-core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index c02af6370e9b..fe010ad62b90 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -482,6 +482,8 @@ struct vb2_buf_ops { * has not been called. This is a vb1 idiom that has been adopted * also by vb2. * @supports_requests: this queue supports the Request API. + * @requires_requests: this queue requires the Request API. If this is set to 1, + * then supports_requests must be set to 1 as well. * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first * time this is called. Set to 0 when the queue is canceled. * If this is 1, then you cannot queue buffers from a request. @@ -556,6 +558,7 @@ struct vb2_queue { unsigned allow_zero_bytesused:1; unsigned quirk_poll_must_check_waiting_for_buffers:1; unsigned supports_requests:1; + unsigned requires_requests:1; unsigned uses_qbuf:1; unsigned uses_requests:1; |