Nicolas Dufresne
c4216a693c
v4l2codecs: mpeg2: Check that the decoder output formats
...
This is to avoid exposing a decoder for which we don't support any
output format. This happens on platform using vendor formats or
not yet supported tiles formats.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1439 >
2021-12-10 21:37:14 +00:00
Nicolas Dufresne
7e875ddb2c
v4l2codecs: mpeg2: Fix selected sizeimage
...
Due to a copy paste bug, the bitdepth was never set and that was leading
to requesting sizeimage of 0. Previously that worked since the driver
would in that case pick a size for us. But now the we bumped the minimum
to 4KB, the driver happily allocate 4KB of bitstream which lead to
decoding error.
As MPEG2 have a fixed bitdeph of 8, use a define instead of the run-time
variable.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1415 >
2021-12-03 07:55:30 -05:00
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
Daniel Almeida
f9958eda8e
v4l2codecs: gstv4l2codecsmpeg2dec: implement a render delay
...
The v4l2 backend support delayed output for performance reasons.
It is then possible to use render delays to queue multiple requests
simultaneously, thus increasing performance.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1013 >
2021-11-02 16:16:29 +00:00
Daniel Almeida
477b824f8e
v4l2codecs: Implement a MPEG2 V4L2 decoder element
...
Implement a MPEG2 V4L2 decoder element based on the previous h264
implementation.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1013 >
2021-11-02 16:16:29 +00:00
