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8 commits

Author SHA1 Message Date
Nicolas Dufresne
390cbe1f00 v4l2slh264dec: Add output format negotiation 
This allow negotiating the output format through caps. Some drivers can
pipeline the decoder buffer through an image processor. This only support
colorspace conversion for now.
 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
b107c20198 v4l2codecs: Fix bytesused value 
Pass the actual amount of bytes we have copied into the bitstream buffer. Also
unmap the memory before queuing.
 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
3cc6643050 v4l2codecdecoder: Add support for dequeuing buffers 
This includings polling of the request and streamon/streamoff.
 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
a307499437 v4l2decoder: Add helpers to queue buffer and requests 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
d476e6d689 v4l2codec: decoder: Add allocation helper 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
7ae57631d4 v4l2codecs: Implement H264 format negotiation 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
a007e2dd9d v4l2codecs: Add skeleton of H264 decoder 
This introduces the skeleton of the H264 decoder. The plugin will list the
devices and register a subclass of the GstV4L2CodecH264Dec base class. The
subclass will pick the required specific information from the GstV4L2Device
stored in the subclass structure.
 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
b7762fc332 v4l2codec: Add GstV4L2Deocder helper object 
This is a GstObject which will be used to hold on media and video device file
descriptor and provide abstracted ioctl calls with these descriptor. At the
moment this helper contains just enough to enumerate the supported format.
This part will be used by the plugin to register the CODEC specific elements..
 2020-03-31 09:34:05 -04:00