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e65dab2b59
Instead of awkwardly reverse-engineering each uop to reflect it back to the corresponding SwsOp, this leverages the new compile_uops() API to directly test the uop in question. This is not only vastly simpler but also fixes several major shortcomings with the previous design, such as always having to keep the reflection code in sync for any newly added uop, or not testing uops that get translated to a packed shuffle fast path. The major downside is that arch-specific uops can now no longer be tested against the C reference unless we specifically add a C reference function for each relevant uop; and also, that the packed shuffle fast path is currently no longer tested by checkasm. (But this will be fixed by my upcoming pshufb uop series) Another downside is that this effectively disables testing for e.g. aarch64, since it does not yet use the uops architecture. $ time checkasm --test=sw_ops --repeat=10 # 1.85s -> 1.39s Signed-off-by: Niklas Haas <git@haasn.dev>
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.