When the decoder get linked further, it will receive a renegotiation
event from downstream. This case is not supported and should be ignored.
This fixes issues when this encoder is used inside an GstRtspServer
pipeline.
https://bugzilla.gnome.org/show_bug.cgi?id=796525
Some drivers need output buffers set before capture buffers.
CODA cannot set output format if capture is streaming.
Exynos MFC fails on output STREAMON if capture is already streaming.
This patch delays capture activation until output is configured and
streaming
https://bugzilla.gnome.org/show_bug.cgi?id=796693
gst_v4l2_dup() will now take care of setting
v4l2capture->no_initial_format and keep_aspect instead of doing it
manually.
Fix a typo as keep_aspect was set twice on v4l2output but never on
v4l2capture.
https://bugzilla.gnome.org/show_bug.cgi?id=795028
This way we can pass the pad name instead of the element for tracing
which helps identifying which v4l2object is used withing M2M element
like decoder, encoder and transform. For the reference, pads are name
<parent-name>:<pad-name>.
The purpose of being able to flush the buffer pool is only to
unlock any blocked operation. Doing streamoff/streamon had the
side effect of turning off and on the camera. As we do a flush_start
/ flush_stop sequence when shutting down, that would cause a really
quick sequence of streamoff/streamon/streamoff/close which was
causing some cameras to stop working.
https://bugzilla.gnome.org/show_bug.cgi?id=783945
The library has started preventing a lot of interesting use cases,
like CREATE_BUFS, DMABuf, usage of TRY_FMT. As the libv4l2 is totally
inactive and not maintained, we decided to disable it. As a convenience
we added a run-time environment that let you enable it for testing.
GST_V4L2_USE_LIBV4L2=1
This of course only works if you have enabled libv4l2 at build time.
The subclass negotiated function will call set_format, if that fails the
pool will not be created. We ended up with an assertion.
GStreamer-CRITICAL **: gst_buffer_pool_set_active: assertion 'GST_IS_BUFFER_POOL (pool)' failed
First step of a larger cleanup, all function from v4l2_calls are in fact
methods on GstV4l2Object. This split makes the code really confusing.
This also remove no longer unused macros.
When upstream does no use the v4l2videoenc pool, we need to activate
that internal pool. Though, we relied the driver to provide a minimum
required buffer, which Qualcomm Venus driver don't currently provide.
https://bugzilla.gnome.org/show_bug.cgi?id=783361
This implements H264 encoding support using generic V4L2 interface. It is
reported to work with Samsung MFC driver, IXM.6 CODA driver and
Qualcomm mainline Venus driver. Other platform should be supported as
none of this work is platform specific.
The implementation consist of a GstV4l2VideoEnc base class, which
implements the core streaming functionality. This base class is implemented
by GstV4l2H264Enc class that implements the caps negotiation specific to
H264 profiles and level. This implementation supports hardware with multiple
H264 encoder. Though, to make it simplier to use, the first discovered H264
encoder will be named v4l2h264enc. Other encoder found during discovery will
have a unique name like v4l2video0h264enc.
This work is the combined work of multiple developpers in the last 3
years. Thanks to all of the contributors:
Ayaka <ayaka@soulik.info>
Frédéric Sureau <frederic.sureau@vodalys.com>
Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com>
Nicolas Dufresne <nicolas.dufresne@collabora.com>
Pablo Anton <pablo.anton@vodalys-labs.com>
https://bugzilla.gnome.org/show_bug.cgi?id=728438
