On Sun, May 21, 2023 at 10:11 PM Lynne <d...@lynne.ee> wrote: > May 21, 2023, 15:03 by nuomi2...@gmail.com: > > > The executor design pattern was inroduced by java > > < > https://docs.oracle.com/en/java/javase/20/docs/api/java.base/java/util/concurrent/Executor.html > > > > it also adapted by python > > <https://docs.python.org/3/library/concurrent.futures.html> > > Compared to handcrafted thread pool management, it greatly simplifies > the thread code. > > --- > > libavcodec/Makefile | 1 + > > libavcodec/vvc/Makefile | 4 + > > libavcodec/vvc/vvc_executor.c | 193 ++++++++++++++++++++++++++++++++++ > > libavcodec/vvc/vvc_executor.h | 73 +++++++++++++ > > 4 files changed, 271 insertions(+) > > create mode 100644 libavcodec/vvc/Makefile > > create mode 100644 libavcodec/vvc/vvc_executor.c > > create mode 100644 libavcodec/vvc/vvc_executor.h > > > > I'd like a unified API, since for AV1, we'd want something similar. > Having a custom one for each codec is a bad idea and prone to bitrotting. > Hi Lynne, Thanks for the comment.
dav1d has not merged to mainline yet. It uses the same idea, but all codes are hand-crafted. Did not use any existing patterns. I guess the executor will simplify the dav1d's code. Let us find out when it is sent to FFmpeg for review. Current ffmpeg's thread management has limitations: 1. Slice thread bound to frame, it can't not us by another frame even current frame has no job. 2. It is a one-shot mechanism. Can't support multi-stage decoder. So it can't fully use the multiple cores. This is why we need a new one. _______________________________________________ > 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". > _______________________________________________ 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".
