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avcodec/pthread_slice: use slice threading from avutil
Muhammad Faiz authored 
Also remove pthread_cond_broadcast(progress_cond) on uninit.
Broadcasting it is not required because workers are always
parked when they are not in thread_execute. So it is imposible
that a worker is waiting on progress_cond when uninitialized.

Benchmark:
./ffmpeg -threads $threads -thread_type slice -i 10slices.mp4 -f null null
threads=2:
  old: 70.212s 70.525s 70.877s
  new: 65.219s 65.377s 65.484s
threads=3:
  old: 65.086s 66.306s 66.409s
  new: 63.229s 65.026s 65.116s
threads=4:
  old: 60.993s 61.482s 62.123s
  new: 59.224s 59.441s 59.667s
threads=5:
  old: 57.576s 57.860s 58.832s
  new: 53.032s 53.948s 54.086s

Signed-off-by: default avatarMuhammad Faiz <mfcc64@gmail.com>
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History
Name Last commit Last update
compat
doc
ffbuild
libavcodec
libavdevice
libavfilter
libavformat
libavresample
libavutil
libpostproc
libswresample
libswscale
presets
tests
tools
.gitattributes
.gitignore
.travis.yml
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
Changelog
INSTALL.md
LICENSE.md
MAINTAINERS
Makefile
README.md
RELEASE
cmdutils.c
cmdutils.h
cmdutils_opencl.c
configure
ffmpeg.c
ffmpeg.h
ffmpeg_cuvid.c
ffmpeg_filter.c
ffmpeg_hw.c
ffmpeg_opt.c
ffmpeg_qsv.c
ffmpeg_videotoolbox.c
ffplay.c
ffprobe.c
ffserver.c
ffserver_config.c
ffserver_config.h
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.
  • 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.