Commit graph

63 commits

Author SHA1 Message Date
Nicolas Dufresne
a307499437 v4l2decoder: Add helpers to queue buffer and requests 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
db787adfa1 v4l2codec: Add getter for buffer index in allocator and pool 2020-03-31 09:34:05 -04:00
Nicolas Dufresne
527f040bfc v4l2h264codecdec: Copy bitstream parameter and data
In this patch we fill the control structure with the bitstream paramter and
copy the bitstream data into V4L2 memory. Slice paramters are only the subset
of what Hantro needs, without any support for interlaced content.
2020-03-31 09:34:05 -04:00
Nicolas Dufresne
2bac52a6fb v4l2slh264dec: Use the newly introduced allocator / pool
We now allocate and free the memory needed for streaming.
2020-03-31 09:34:05 -04:00
Nicolas Dufresne
c120f8b041 v4l2codec: Add allocator and pool implementation
This is a pooling allocator and the buffer pool does nothing other then
reusing the GstBuffer structure. Note that the pool is an internal pool, so
the start/stop/set_config virtual functions are not implemented.
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
020a019fd6 v4l2codecs: Add initial formats helpers 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
Nicolas Dufresne
dd2b0302b3 v4l2codecs: Copy all needed Linux kernel headers
Most of the features we need are very early or not expose yet in the uAPI.
Using an internal copy ensure that we everything we need is defined avoiding
to add load of checks and conditionnal code.
2020-03-31 09:34:05 -04:00
Nicolas Dufresne
6d9c98ae5a v4l2codecs: Add device enumeration
This introduces a GstV4L2CodecDevice structure and helper to retrieve a
list of CODEC device drivers. In order to find the device driver we
enumerate all media devices with UDEV. We then get the media controller
topology and locate a entity with function encoder or decoder and make
sure it is linked to two V4L2 IO entity pointing to the same device
node.
2020-03-31 09:34:05 -04:00
Nicolas Dufresne
6958fb6d59 v4l2codecs: Introdude a V4L2 CODECs Accelerator plugin
This plugin will support new CODECs uAPI in the Linux kernel. These
consist of an accelerator interface similar to DXVA, NVDEC, VDPAU and
VAAPI.
2020-03-31 09:34:05 -04:00