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7fab0becab
Add ARM64 NEON-accelerated unscaled YUV-to-RGB conversion for planar YUV input formats. This extends the existing NV12/NV21 NEON paths with YUV420P, YUV422P, and YUVA420P support for all packed RGB output formats (ARGB, RGBA, ABGR, BGRA, RGB24, BGR24) and planar GBRP. Register with ff_yuv2rgb_init_aarch64() to also cover the scaled path. checkasm: all 42 sw_yuv2rgb tests pass. Speedup vs C at 1920px width (Apple M3 Max, avg of 20 runs): yuv420p->rgb24: 4.3x yuv420p->argb: 3.1x yuv422p->rgb24: 5.5x yuv422p->argb: 4.1x yuva420p->argb: 3.5x yuva420p->rgba: 3.5x Signed-off-by: David Christle <dev@christle.is>
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 means to alter decoded audio and video through a directed graph of connected 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.