Port GstVaapiDecoder and GstVaapiDecoder{MPEG2,MPEG4,JPEG,H264,VC1} to
GstVaapiMiniObject. Add gst_vaapi_decoder_set_codec_state_changed_func()
helper function to let the user add a callback to a function triggered
whenever the codec state (e.g. caps) changes.
This integrates support for GStreamer API >= 1.0 only in the libgstvaapi
core decoding library. The changes are kept rather minimal here so that
the library retains as little dependency as possible on core GStreamer
functionality.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
In decode_codec_data(), force initialization of format to zero so that
we can catch up cases where codec-data has neither "format" nor "wmvversion"
fields, thus making it possible to gracefully fail in this case.
Add a new GstVaapiDecoder::decode_codec_data() hook to actually decode
codec-data in the decoder sub-class. Provide a common shared helper
function to do the actual work and delegating further to the sub-class.
Fix build with newer VC-1 codecparser where dqsbedge was renamed to
dqbedge, and now represents either DQSBEDGE or DQDBEDGE depending on
the actual value of DQPROFILE.
Fix size of encapsulated BDUs since GstVC1BDU.size actually represents
the size of the BDU data, starting from offset, i.e. after any start
code is parsed.
This fixes a buffer overflow during the unescaping process.
The AVI demuxer (avidemux) does not set a proper "format" attribute
to the generated caps. So, try to recover the video codec format from
the "wmvversion" property instead.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Don't create temporary GstBuffers for all decoder units, even if they
are lightweight "sub-buffers", since it is not really necessary to keep
the buffer data around.
Implement GstVaapiDecoder.start_frame() and end_frame() semantics so
that to create new VA context earlier and submit VA pictures to the
HW for decoding as soon as possible. i.e. don't wait for the next
frame to start decoding the previous one.
Use GstVaapiDpb interface instead of maintaining our own prev and next
picture pointers. While doing so, try to derive a sensible POC value.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Allocate decoder unit earlier in the main parse() function and don't
delegate this task to derived classes. The ultimate purpose is to get
rid of dynamic allocation of decoder units.
Use standard GstVideoCodecState throughout GstVaapiDecoder and expose
it with a new gst_vaapi_decoder_get_codec_state() function. This makes
it possible to drop picture size (width, height) information, framerate
(fps_n, fps_d) information, pixel aspect ratio (par_n, par_d) information,
and interlace mode (is_interlaced field).
This is a new API with backwards compatibility maintained. In particular,
gst_vaapi_decoder_get_caps() is still available.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
If GstVaapiPicture has flag SKIPPED set, this means gst_vaapi_picture_output()
will not push the underlying surface for rendering. Besides, VC-1 skipped P-frame
has nothing to do with rendering. This only means that the currently decoded
picture is just a copy of its reference picture.
The new API simplifies a lot reference counting and makes it more
flexible for future additions/changes. The GstVaapiCodecInfo is
also gone. Rather, new helper macros are provided to allocate
picture, slice and quantization matrix parameter buffers.
