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0e7a485528
Some v4l2 drivers don't have the capacity to change framerate. There is chance to make decoder capture fps to be 0/0 if numerator and denominator returned by G_PARM ioctl are both 0. It causes critical warning "passed '0' as denominator for `GstFraction'". In order to fix this, add protection when set decoder capture fps according to output fps. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1048> |
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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/