There shall be only one place to call decode_current_picture(), and this
is in the end_frame() hook. The EOS unit is processed after end_frame()
so this means we cannot have a valid picture to decode/output at this
point.
Improve robustness when some expected packets where not received yet
or that were not correctly decoded. For example, don't try to decode
a picture if there was no valid sequence or picture headers.
Fix gst_vaapi_decoder_get_surface() to only return frames with a valid
surface proxy, i.e. with a valid VA surface. This means that any frame
marked as decode-only is simply skipped.
If the decoder was not able to decode a frame because insufficient
information was available, e.g. missing sequence or picture header,
then allow the frame to be gracefully dropped without generating
any error.
It is also possible that a frame is not meant to be displayed but
only used as a reference, so dropping that frame is also a valid
operation since GstVideoDecoder base class has extra references to
that GstVideoCodecFrame that needs to be released.
Decode-only frames may not have a valid surface proxy. So, simply discard
them gracefully, i.e. don't create meta data information. GstVideoDecoder
base class will properly handle this case and won't try to push any buffer
to downstream elements.
Implement GstVideoDecoder::reset() as a destruction of the VA decoder
and the creation of a new VA decoder.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
The Wayland API is not fully thread-safe and client applications shall
perform locking themselves on key functions. Besides, make sure to
release the lock if the _render() function fails.
Introduce gst_vaapi_window_wayland_sync() helper function to wait for
the completion of the redraw request. Use it in _render() function to
actually block until the previous draw request is completed.
The redraw callback needs to be attached to the surface prior to the
commit. Otherwise, the callback notifies the next surface repaint,
which is not the desired behaviour. i.e. we want to be notified for
the surface we have just filled.
Another isse was the redraw_pending was reset before the actual completion
of the frame redraw callback function, thus causing concurrency issues.
e.g. the callback could have been called again, but with a NULL buffer.
When the Wayland display is shared, we still have to create our own local
shell and compositor objects, since they are not propagated from the cache.
Likewise, we also need to determine the display size or vaapisink would
fail to account for the display aspect ratio, and will try to create a 0x0
window.
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>
Avoid usage of goto. Simplify decode_step() process to first accumulate all
pending buffers into the GstAdapter, and then parse and decode units from
that input adapter. Stop the process once a frame is fully decoded or an
error occurred.
Set the window size to the decoded surface dimensions, if the user has
not requested the application to run in full-screen mode. Besides, no
effort is made to preserve aspect ratio or to center the video within
the mapped window.
Add helper functions to determine the codec type from a specific file
or utility functions to convert from codec type to GstCaps or from
codec name to codec type.
