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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-02-09 14:14:39 +02:00
Martin Storsjö 4f693b56bd arm: vp9itxfm: Reorder the idct coefficients for better pairing
All elements are used pairwise, except for the first one.
Previously, the 16th element was unused. Move the unused element
to the second slot, to make the later element pairs not split
across registers.

This simplifies loading only parts of the coefficients,
reducing the difference to the 16 bpp version.

This is cherrypicked from libav commit
de06bdfe6c8abd8266d5c6f5c68e4df0060b61fc.

Signed-off-by: Martin Storsjö <martin@martin.st>
2017-03-11 13:14:51 +02:00
2017-01-27 17:06:42 +01:00
2015-12-04 02:35:42 +01:00
2017-03-02 11:39:54 +01:00
2016-09-18 10:02:13 +01:00
2016-11-27 20:46:20 +01:00
2016-09-18 10:02:13 +01:00
2016-10-26 20:52:43 +02:00
2016-03-10 09:53:10 +01:00

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements 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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-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.

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