Hi, I'm working on the libswscale refactoring and Michael advised me to send the changes to the mailing list so that I can get more feedback about it. Thus I added the references [1] - [7] which are links to commits on my github fork of FFmpeg.
Last week I wrote the horizontal chroma scaling (patches [3]-[7]) code and spent some time ensuring it passes all tests. As we are approaching the midterm I'll also present my scheduling plans. - Line pool allocator for SwsSlice - Implement ring buffer logic into SwsSlice - Implement horizontal scaling (refactor) - Implement vertical scaling (refactor) - Measure refactor performance/overhead - Document new code The horizontal scaling is already working. I did some tests and initially the overhead of the new code is ~3% (measured only in the modified scaling code) which should be almost 0% for total program time execution. For the next week (or 2) I plan to implement the line pool allocator and the ring buffer logic. Besides the scheduling list, with the new scaling design I think it is possible to remove the need for cascade SwsContexts and also work on some kind of parallelization of the scaling code. These I should work after finishing the scheduling. [1] 7efb0fae8ed52b6f841d70c4d8981399da42e7bd <https://github.com/grandao/FFmpeg/commit/7efb0fae8ed52b6f841d70c4d8981399da42e7bd> [2] 0b955f28ab1cbba5188e0cbd44c250dc5b526d53 <https://github.com/grandao/FFmpeg/commit/0b955f28ab1cbba5188e0cbd44c250dc5b526d53> [3] b577b4d388743e6f90f54e65fdb8edddbeaf17de <https://github.com/grandao/FFmpeg/commit/b577b4d388743e6f90f54e65fdb8edddbeaf17de> [4] f83a83e8ab97e0fcab2248e828d4fb5433e8bcfe <https://github.com/grandao/FFmpeg/commit/f83a83e8ab97e0fcab2248e828d4fb5433e8bcfe> [5] eaf6de8606b698baaeda1ecb9493a240d5b828e9 <https://github.com/grandao/FFmpeg/commit/eaf6de8606b698baaeda1ecb9493a240d5b828e9> [6] b949d895da80979d44f6525de3a3f9a98118a0a6 <https://github.com/grandao/FFmpeg/commit/b949d895da80979d44f6525de3a3f9a98118a0a6> [7] 353d20df59075d442e943f00c7fcb8bc7784089b <https://github.com/grandao/FFmpeg/commit/353d20df59075d442e943f00c7fcb8bc7784089b> _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
