mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2026-07-16 20:43:10 +00:00
d36b8394f4
add ff_pixelutils_sad_32x32_sse2, ff_pixelutils_sad_{a,u}_32x32_sse2,
ff_pixelutils_sad_32x32_avx22, ff_pixelutils_sad_{a,u}_32x32_avx2
use perf record/report profiling, get instructions:u for avx2 sad_32x32:
72.05% pixelutils pixelutils [.] block_sad_32x32_c
18.50% pixelutils pixelutils [.] block_sad_16x16_c
4.78% pixelutils pixelutils [.] block_sad_8x8_c
2.69% pixelutils pixelutils [.] block_sad_4x4_c
0.89% pixelutils pixelutils [.] block_sad_2x2_c
0.16% pixelutils pixelutils [.] ff_pixelutils_sad_32x32_avx2
0.16% pixelutils pixelutils [.] ff_pixelutils_sad_u_32x32_avx2
0.12% pixelutils pixelutils [.] ff_pixelutils_sad_a_32x32_avx2
sse2 sad_32x32 instructions:u like:
71.86% pixelutils pixelutils [.] block_sad_32x32_c
18.42% pixelutils pixelutils [.] block_sad_16x16_c
4.81% pixelutils pixelutils [.] block_sad_8x8_c
2.68% pixelutils pixelutils [.] block_sad_4x4_c
0.88% pixelutils pixelutils [.] block_sad_2x2_c
0.29% pixelutils pixelutils [.] ff_pixelutils_sad_32x32_sse2
0.26% pixelutils pixelutils [.] ff_pixelutils_sad_u_32x32_sse2
0.23% pixelutils pixelutils [.] ff_pixelutils_sad_a_32x32_sse2
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.