Andreas Rheinhardt 0f105b96a3 avcodec/x86/hevc/idct: Port ff_hevc_idct_4x4_dc_{8,10,12}_mmxext to SSE2
Practically no change in benchmarks (and in codesize).

hevc_idct_4x4_dc_8_c:                                    7.8 ( 1.00x)
hevc_idct_4x4_dc_8_mmxext:                               6.9 ( 1.14x)
hevc_idct_4x4_dc_8_sse2:                                 6.8 ( 1.15x)
hevc_idct_4x4_dc_10_c:                                   7.9 ( 1.00x)
hevc_idct_4x4_dc_10_mmxext:                              6.9 ( 1.16x)
hevc_idct_4x4_dc_10_sse2:                                6.8 ( 1.16x)
hevc_idct_4x4_dc_12_c:                                   7.8 ( 1.00x)
hevc_idct_4x4_dc_12_mmxext:                              7.0 ( 1.13x)
hevc_idct_4x4_dc_12_sse2:                                6.8 ( 1.15x)

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-10-30 08:56:45 +01:00
2025-08-08 21:51:15 +00:00
2025-06-23 14:48:40 +02:00
2025-08-03 13:48:47 +02:00
2025-05-07 15:35:47 +02:00
2025-08-14 08:42:29 -04:00

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 means to alter decoded audio and video through a directed graph of connected 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.
  • 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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