Commit graph

15 commits

Author SHA1 Message Date
Robert Mader
5189e8b956 v4l2codecs: decoders: Add DMA_DRM caps support
In order to simplify caps negotiations for clients and, notably, be more
compatible with va* decoders.
Crucially this allows clients to know ahead of time whether buffers will
actually be DMABufs.

Similar to GstVaBaseDec we only announce system memory caps if the peer
has ANY caps. Further more, and again like va decoders, we fail in
`decide_allocation()` if DMA_DRM caps are used without VideoMeta.
Apart from buggy peers this can happen e.g. when a peer with ANY caps
is used in combination with caps filters.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
513d0d8cbb v4l2codecs: decoders: Introduce and use set_output_state helper class
Allowing us to avoid some code duplication. This will become more
important with upcoming changes to caps generation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
65896dab75 v4l2codecs: decoders: Use src template for negotiation filter
This ensures we don't create filter caps that are not supported by the
individual codec implementations, as well as that the resulting caps
have the required fields so they can be turned into a GstVideoFormat.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +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
15c9a6caa9 vp8decoder: Fix multiplication wraparound
The GstVp8Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecVp8Dec v4l2_vp8_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 VP8 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
Seungha Yang
4571fac946 vp8decoder: Port to GstCodecPicture struct
... and remove unused "pts" variable from GstVp8Picture struct

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
James Cowgill
70ff80a873 v4l2codecs: Always chain up to parent decide_allocation function
The `gst_video_decoder_negotiate_pool` function expects the
`decide_allocation` function to always provide a pool and will fail to
negotiate if the pool is missing. If we return immediately (even if we
don't need to do anything special) negotiation will fail if the
downstream element does not propose a pool.

Fix by chaining up to the default `decide_allocation` function which
adds a fallback pool if one was not already proposed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4630>
2023-06-15 17:02:28 +00:00
Nicolas Dufresne
d3c5fc815e v4l2codecs: Allow output caps to be updated
This change allow output caps to be updated even though we stay in
streaming state. This is needed so that any upstream updated to fields
like framerate, hdr data, etc. can result in a downstream caps event
being pushed.

Previously, any of these changes was being ignored and the downstream
caps would not reflect it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3328>
2022-11-16 13:12:38 +00:00
Seungha Yang
6a4c42c03f codecs: Signal required DPB size for AV1,MPEG2,VP8, and VP9 via new_sequence()
Make all codecs consistent so that subclass can know additional DPB
size requirement depending on render-delay configuration regardless
of codec. Note that render-delay feature is not implemented for AV1
yet but it's planned.

Also, consider new_sequence() is mandatory requirement, not optional

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2343>
2022-05-03 14:17:49 +00:00
Nicolas Dufresne
d7363bd838 v4l2codecs: Fix debug assertion in register functions
As now, we warn if the decoder have no support src pixel format, but that
warning is called before the type (hence the debug category) is initialized.
Fix this by moving the debug category init out of the type initialization,
into the register funcitons.

This will fix an assertion that occures in the register function and allow
relevant log to be seen by the users.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1588>
2022-01-27 18:53:41 +00:00
Nicolas Dufresne
107088a658 v4l2codecs: Unify the src template caps format
Notably NV12_4L4 ended up being applied to only VP9 decoder. This fixes the
situation by using a central define for all static src pad templated formats.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/965>
2022-01-21 19:32:30 +00:00
Nicolas Dufresne
a6eb1e7782 v4l2codecs: Fix renegotiation
If we hold the last reference to the allocator, leaving the device
streaming will cause an EBUSY error when trying to free the allocate
buffers.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1404>
2021-12-02 15:45:26 -05:00
James Cowgill
8b932c105f v4l2codecs: Handle allocator creation failure
If `VIDIOC_REQBUFS` doesn't return enough buffers the allocator creation
function can fail and return `NULL`. Handle this by generating an error
and returning instead of segfaulting.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1220>
2021-11-02 15:25:48 +00:00
Benjamin Gaignard
7e9e17ebbe v4l2codecs: Align v4l2-controls header with kernel 5.15-rc3
Update v4l2-controls to be aligned with kernel 5.15-rc3.
Fix VP8 decoder to use the correct field name.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1081>
2021-10-10 15:50:57 +00:00
Thibault Saunier
019971a3c7 Move files from gst-plugins-bad into the "subprojects/gst-plugins-bad/" subdir 2021-09-24 16:14:36 -03:00
Renamed from sys/v4l2codecs/gstv4l2codecvp8dec.c (Browse further)