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Lauri Kasanen 50e672bc54 swscale/ppc: VSX-optimize non-full-chroma yuv2rgb_1 
./ffmpeg -f lavfi -i yuvtestsrc=duration=1:size=1200x1440 -sws_flags fast_bilinear \
        -s 1200x1440 -f null -vframes 100 -pix_fmt $i -nostats \
        -cpuflags 0 -v error -

32-bit mul, power8 only.

1.8-2.3x speedup:

rgb24
  18192 UNITS in yuv2packed1,   32767 runs,      1 skips
   9983 UNITS in yuv2packed1,   32760 runs,      8 skips
bgr24
  18665 UNITS in yuv2packed1,   32766 runs,      2 skips
   9925 UNITS in yuv2packed1,   32763 runs,      5 skips
rgba
  20239 UNITS in yuv2packed1,   32767 runs,      1 skips
   8794 UNITS in yuv2packed1,   32759 runs,      9 skips
bgra
  20354 UNITS in yuv2packed1,   32768 runs,      0 skips
   8770 UNITS in yuv2packed1,   32761 runs,      7 skips
argb
  20185 UNITS in yuv2packed1,   32768 runs,      0 skips
   8761 UNITS in yuv2packed1,   32761 runs,      7 skips
bgra
  20360 UNITS in yuv2packed1,   32766 runs,      2 skips
   8759 UNITS in yuv2packed1,   32764 runs,      4 skips

This is a low speedup, but the x86 mmx version also gets only ~2x. The mmx version
is also heavily inaccurate, while the vsx version has high accuracy.
2019-04-07 09:20:31 +03:00
compat additional math.h functions for djgpp 2018-11-28 22:16:07 +11:00
doc doc/examples/metadata: fix the example can't dump FLV metadata 2019-04-07 10:18:42 +08:00
ffbuild Merge commit '7e5bde93a1' 2019-03-10 19:31:13 -03:00
fftools fftools/ffmpeg: Check if we do have also a filter_complex filter. 2019-03-28 21:29:20 +01:00
libavcodec avcodec/agm: Fix integer overflow with w/h 2019-04-05 12:05:47 +02:00
libavdevice lavd/x11grab: fix vertical repositioning 2019-04-06 15:20:36 +02:00
libavfilter avfilter/vf_yadif_cuda: Remove unnecessary stream synchronisation 2019-03-30 08:55:15 -07:00
libavformat lavf/Makefile: Fix kux demuxer standalone compilation. 2019-04-07 02:00:30 +02:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/hcontext_cuda: Remove unnecessary stream synchronisation 2019-03-30 10:56:49 -07:00
libpostproc postproc/postprocess_template: remove FF_REG_sp from clobber list 2018-12-22 17:41:44 +01:00
libswresample Bump minor version for master after 4.1 branchpoint 2018-11-02 00:53:07 +01:00
libswscale swscale/ppc: VSX-optimize non-full-chroma yuv2rgb_1 2019-04-07 09:20:31 +03:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests FATE: Add test for HEVC files that claim to have two first slices 2019-04-05 14:16:52 +01:00
tools tools/target_dec_fate.list: add issues 4000 to 6000 2019-03-20 21:12:45 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog lavf/flvdec: added support for KUX container 2019-04-06 15:54:38 +02:00
configure configure: include pkgconfig path as vaapi header search 2019-03-28 21:47:15 +08:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md Merge commit '4fef648d10' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: remove myself as mailing list maintainer 2019-03-21 11:34:13 -08:00
Makefile Merge commit '7e5bde93a1' 2019-03-10 19:31:13 -03:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: bump to 4.1.git 2018-11-02 00:55:49 +01:00

README.md

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.
  • 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.