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9a13ed522f
Add support for WavPack DSD files to the existing WavPack decoder using avcodec/dsd to perform the 8:1 decimation to 32-bit float samples. We must serialize the dsd2pcm operation (cross-boundary filtering) but would like to use frame-level multithreading for the CPU-intensive DSD decompression, and this is accomplished with ff_thread_report/await_progress(). Because the dsd2pcm operation is independent across channels we use slice-based multithreading for that part. Also a few things were removed from the existing WavPack decoder that weren't being used (primarily the SavedContext stuff) and the WavPack demuxer was enhanced to correctly determine the sampling rate of DSD files (and of course to no longer reject them). Signed-off-by: David Bryant <david@wavpack.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.