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Lauri Kasanen 8dd9df9ecd swscale/output: Altivec-optimize float yuv2plane1 
This function wouldn't benefit from VSX instructions, so I put it
under altivec.

./ffmpeg_g -f rawvideo -pix_fmt rgb24 -s hd1080 -i /dev/zero -pix_fmt grayf32le \
-f null -vframes 100 -v error -nostats -

3743 UNITS in planar1,   65495 runs,     41 skips

-cpuflags 0

23511 UNITS in planar1,   65530 runs,      6 skips

grayf32be

4647 UNITS in planar1,   65449 runs,     87 skips

-cpuflags 0

28608 UNITS in planar1,   65530 runs,      6 skips

The native speedup is 6.28133, and the bswapping one 6.15623.
Fate passes, each format tested with an image to video conversion.

Signed-off-by: Lauri Kasanen <cand@gmx.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-12-26 20:28:58 +01:00
compat additional math.h functions for djgpp 2018-11-28 22:16:07 +11:00
doc avcodec/libvpxenc: add VP8/9 sharpness config option 2018-12-24 13:20:06 -08:00
ffbuild Merge commit '17b6c7efb4' 2017-11-12 01:02:02 -03:00
fftools ffmpeg: improve the intra stream discontinuity message 2018-12-18 21:04:57 +02:00
libavcodec avcodec/dnxhddec: fix block alignment 2018-12-26 13:57:50 -03:00
libavdevice lavd/v4l2: Use "int request" as second parameter for ioctl() on Android. 2018-12-11 00:49:22 +01:00
libavfilter avfilter/af_headphone: fix regression after 7c201e420 2018-12-26 10:41:41 +01:00
libavformat avformat/hlsenc: remove unused variable to fix compiler warning 2018-12-26 19:29:18 +08:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil Add HDR dynamic metadata struct (for SMPTE 2094-40) to libavutil 2018-12-21 17:52:00 +01:00
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/output: Altivec-optimize float yuv2plane1 2018-12-26 20:28:58 +01:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests lavc/options_table: Change some options location in opt table. 2018-12-20 18:40:41 +08:00
tools tools/qt-faststart: Allow free atoms after moov atom. 2018-08-01 00:49:54 +02:00
.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 '4809781586' 2017-10-28 15:08:31 -03:00
Changelog avformat: add vividas demuxer 2018-12-20 19:32:27 +01:00
configure configure: make --windres option work 2018-12-20 12:46:11 +11:00
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
LICENSE.md Merge commit '4fef648d10' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: remove myself as hls demuxer maintainer 2018-10-16 01:18:00 +03:00
Makefile avcodec/parser: move parsers list and related API to its own file 2018-07-21 16:08:29 -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.