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This way we can pass explicit modifiers in. Sometimes the modifier matters for the number of memory planes that libva accepts, in particular when dealing with driver-compressed textures. Furthermore the driver might not actually be able to determine the implicit modifier if all the buffer-passing has used explicit modifier. All these issues should be resolved by passing in the modifier, and for that we switch to using the PRIME_2 memory type. Tested with experimental radeonsi patches for modifiers and kmsgrab. Also tested with radeonsi without the patches to double-check it works without PRIME_2 support. v2: Cache PRIME_2 support to avoid doing two calls every time on libva drivers that do not support it. v3: Remove prime2_vas usage. Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
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.