On Thu, Nov 5, 2020 at 7:12 PM James Almer <jamr...@gmail.com> wrote: > > > > That depends on the behavior of av1dec. Are all tile groups guaranteed > > to be available at the same time, so that I can simply save pointers > > to them, and copy them into the final buffer later? > > Not currently, in theory, but can be easily done by storing a reference > to the AVBufferRef in each TileGroupInfo. > > That being said, i don't know if the decoder can handle split/incomplete > Temporal Units as is. Guess it's a matter of injecting the > av1_frame_split bsf and see how badly it explodes. > If we enforce Temporal Units to be fully contained in a packet (As they > are muxed into ivf, mp4, webm, annexb, etc), or at least individual > Frames (Header + Tile Group/s combinations), we could also avoid the > memcpy in dxva2_av1_decode_slice().
One memcpy will always have to remain, from the packet to the hardware buffer. If we can guarantee that all tile groups are present at the same time, then I could copy them straight to the hardware buffer during end_frame, instead of buffering them. But then tile groups are not that common, so I wouldn't see this as a big blocker and we can clean that up when av1dec can ensure the presence of the data. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
