Three years ago I was writing some assembly to speed-up the flac encoder. I got part of the set committed at that time. Since then the encoder had a small overhaul and a major bugfix. That all meant this set needed a little work to bring it back on top of master. I did most of that work in August and finished it today.
Some of you have been bugging me off and on about finishing it so here it is. Enjoy, review, critique, whatever. When people have signed off on it I will push the set, after addressing issues people have with it. That bugfix I mentioned was e609cfd697. It made the benchmarking I originally did a little less useful because both types of the lpc coder are used for both sample depths (16 and 24). That does make the 32-bit version more useful though because it gets used with 16-bit samples when the intermediates overflow 32 bits. James Darnley (8): avcodec/flac: document limitations of the LPC encoder avcodec/flac: add AVX2 version of the 16-bit LPC encoder avcodec/flac: add SSE4.2 version of the 32-bit lpc encoder avcodec/flac: partially unroll loop in flac_enc_lpc_32 lavc/x86/flac_dsp_gpl: cosmetic whitespace alignment lavc/x86/flac_dsp_gpl: partially unroll 32-bit LPC encoder lavc/flacenc: add AVX2 version of the 32-bit LPC encoder checkasm: add tests for flacenc lpc coder libavcodec/flacdsp.h | 8 ++ libavcodec/flacenc.c | 2 +- libavcodec/x86/flac_dsp_gpl.asm | 267 +++++++++++++++++++++++++++++++++++++--- libavcodec/x86/flacdsp_init.c | 13 ++ tests/checkasm/flacdsp.c | 72 +++++++++++ 5 files changed, 343 insertions(+), 19 deletions(-) -- 2.15.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
