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225d6b7e11
This fixes a possible deadlock between gst_v4l2_video_dec_change_state and gst_v4l2_video_dec_loop on the buffer pool. When stopping capture, the flushing state of the v4l2 capture buffer pool gets reverted in the processing loop after it was set via gst_v4l2_object_unlock (self->v4l2capture) (in gst_v4l2_video_dec_change_state). As a result, gst_v4l2_video_dec_loop does not return and consequently, gst_pad_stop_task gets stuck waiting for the GST_PAD_STREAM_LOCK. To circumvent this, skip acquiring the buffer pool if stopping capture. Suggested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7958> |
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| .. | ||
| ext | ||
| gstv4l2.c | ||
| gstv4l2allocator.c | ||
| gstv4l2allocator.h | ||
| gstv4l2bufferpool.c | ||
| gstv4l2bufferpool.h | ||
| gstv4l2codec.c | ||
| gstv4l2codec.h | ||
| gstv4l2colorbalance.c | ||
| gstv4l2colorbalance.h | ||
| gstv4l2deviceprovider.c | ||
| gstv4l2deviceprovider.h | ||
| gstv4l2element.c | ||
| gstv4l2elements.h | ||
| gstv4l2fwhtenc.c | ||
| gstv4l2fwhtenc.h | ||
| gstv4l2h263enc.c | ||
| gstv4l2h263enc.h | ||
| gstv4l2h264codec.c | ||
| gstv4l2h264codec.h | ||
| gstv4l2h264enc.c | ||
| gstv4l2h264enc.h | ||
| gstv4l2h265codec.c | ||
| gstv4l2h265codec.h | ||
| gstv4l2h265enc.c | ||
| gstv4l2h265enc.h | ||
| gstv4l2jpegenc.c | ||
| gstv4l2jpegenc.h | ||
| gstv4l2mpeg2codec.c | ||
| gstv4l2mpeg2codec.h | ||
| gstv4l2mpeg4codec.c | ||
| gstv4l2mpeg4codec.h | ||
| gstv4l2mpeg4enc.c | ||
| gstv4l2mpeg4enc.h | ||
| gstv4l2object.c | ||
| gstv4l2object.h | ||
| gstv4l2radio.c | ||
| gstv4l2radio.h | ||
| gstv4l2sink.c | ||
| gstv4l2sink.h | ||
| gstv4l2src.c | ||
| gstv4l2src.h | ||
| gstv4l2transform.c | ||
| gstv4l2transform.h | ||
| gstv4l2tuner.c | ||
| gstv4l2tuner.h | ||
| gstv4l2videodec.c | ||
| gstv4l2videodec.h | ||
| gstv4l2videoenc.c | ||
| gstv4l2videoenc.h | ||
| gstv4l2vidorient.c | ||
| gstv4l2vidorient.h | ||
| gstv4l2vp8codec.c | ||
| gstv4l2vp8codec.h | ||
| gstv4l2vp8enc.c | ||
| gstv4l2vp8enc.h | ||
| gstv4l2vp9codec.c | ||
| gstv4l2vp9codec.h | ||
| gstv4l2vp9enc.c | ||
| gstv4l2vp9enc.h | ||
| meson.build | ||
| README | ||
| tuner.c | ||
| tuner.h | ||
| tunerchannel.c | ||
| tunerchannel.h | ||
| tunernorm.c | ||
| tunernorm.h | ||
| v4l2-utils.c | ||
| v4l2-utils.h | ||
| v4l2_calls.c | ||
v4l2 plugins
============
The idea is a bit the same as the idea for the v4l1 plugins. We want
one generic v4l2element, and a few child objects (probably only two:
v4l2src and v4l2sink):
/-------- v4l2src
v4l2element ---=
\-------- v4l2sink
Both v4l2src and v4l2sink have a uncompressed and a compressed
recording-/playback-mode. Since this is all part of v4l2, the 'client'
of these elements, i.e. an application using v4l2src/v4l2sink, will
hardly notice this. All capsnego stuff is done inside, and the plugin
knows which formats are compressed and which are not.
Please note that the v4l1 and the v4l2 plugins are *not* compatible
concerning properties. Naming has been kept the same where possible,
but in some cases, properties had to be removed or added to make
full use of v4l2.
V4L2 API: http://linux.bytesex.org/v4l2/.
http://v4l2spec.bytesex.org/
/usr/include/linux/videodev2.h or
Kernel patches available from
http://dl.bytesex.org/patches/.
Articles:
http://lwn.net/Articles/203924/