Commit graph

7 commits

Author SHA1 Message Date
Robert Mader
a64f2bf628 v4l2codecs: Always chain up to parent decide_allocation function for all codecs
Apply the changes to the codecs previously left out, fixing playback
issues seen with VP9.

See: 70ff80a873 ("v4l2codecs: Always chain up to parent decide_allocation function")
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5896>
2024-01-09 17:29:52 +00:00
Robert Mader
75b7e5fcb3 v4l2codecs/av1decoder: Allow output caps to be updated
To bring AV1 in line - needed for the next commit.

See: d3c5fc815e ("v4l2codecs: Allow output caps to be updated")
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5896>
2024-01-09 17:29:52 +00:00
Marek Vasut
3335af0efe v4l2codecs: Deduplicate picture frame number to timestamp in ns
Add macro which converts picture frame number to suitable timestamp in
nanoseconds for use in V4L2 VB2 buffer lookup. Since multiple codecs do
the same operation and almost all got it wrong, do it in one place so it
can be fixed in one place again, if needed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
50fb6f8c02 av1decoder: Fix multiplication wraparound
The GstAV1Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecAV1Dec v4l2_av1_frame.*_frame_ts multiplication result is u64 .

```
u64 result = (u32)((u32)system_frame_number * (u32)1000);
```
behaves the same as
```
u64 result = (u32)(((u32)system_frame_number * (u32)1000) & 0xffffffff);
```

so in case `system_frame_number > 4294967295 / 1000`, the `result` will
wrap around. Since the `result` is really used as a cookie used to look
up V4L2 buffers related to the currently decoded frame, this wraparound
leads to visible corruption during AV1 decoding. At 30 FPS this occurs
after cca. 40 hours of playback .

Fix this by changing the 1000 from u32 to u64, i.e.:
```
u64 result = (u64)((u32)system_frame_number * (u64)1000ULL);
```
this way, the wraparound is prevented and the correct cookie is used.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
renjun wang
4ff2f07e51 v4l2codecs: av1: Fix typo in debug log message
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5722>
2023-12-06 10:25:24 +00:00
Seungha Yang
97fc02cfe3 av1decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Daniel Almeida
ec188eb82e v4l2codecs: Add AV1 decoder
This patch adds AV1 stateless v4l2 decode support using the
new v4l2 request API to communicate with hardware accelerators.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1011>
2023-06-16 01:30:40 +00:00