RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-03-05 20:18:16 +00:00
Code Issues Projects Releases Wiki Activity
FFmpeg git repo
117,895 Commits 37 Branches 401 Tags 282 MiB
C 90.3%
Assembly 7.8%
Makefile 1.3%
C++ 0.2%
Objective-C 0.1%
Other 0.1%
bf738412e8
Go to file
Niklas Haas bf738412e8 swscale/graph: add new high-level scaler dispatch mechanism 
This interface has been designed from the ground up to serve as a new
framework for dispatching various scaling operations at a high level. This
will eventually replace the old ad-hoc system of using cascaded contexts,
as well as allowing us to plug in more dynamic scaling passes requiring
intermediate steps, such as colorspace conversions, etc.

The starter implementation merely piggybacks off the existing sws_init() and
sws_scale(), functions, though it does bring the immediate improvement of
splitting up cascaded functions and pre/post conversion functions into
separate filter passes, which allows them to e.g. be executed in parallel
even when the main scaler is required to be single threaded. Additionally,
a dedicated (multi-threaded) noop memcpy pass substantially improves
throughput of that fast path.

Follow-up commits will eventually expand this to move all of the scaling
decision logic into the graph init function, and also eliminate some of the
current special cases.

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Niklas Haas <git@haasn.dev>
2024-11-25 11:02:16 +01:00
compat compat: Fix the fallback definition of stdc_trailing_zeros 2024-09-24 14:00:27 +03:00
doc swscale: organize and better document flags 2024-11-25 11:02:12 +01:00
ffbuild configure: Add detection of assembler support for SVE/SVE2 2024-09-27 00:03:04 +03:00
fftools fftools/ffmpeg_sched: signal the main thread when a task fails 2024-11-25 05:26:49 +01:00
libavcodec avcodec/mjpegdec: Disallow progressive bayer images 2024-11-25 03:13:33 +01:00
libavdevice avdevice/dshow: fix unused variable warning 2024-10-17 13:04:17 +02:00
libavfilter avfilter: fix unused variable warning 2024-11-24 22:11:12 +01:00
libavformat avformat/mm: add fallthrough comment 2024-11-25 17:58:30 +11:00
libavutil avutil/frame: also align data pointers in av_frame_get_buffer() 2024-11-22 10:43:55 -03:00
libpostproc */version.h: bump after release/7.1 branch 2024-09-24 17:10:35 +02:00
libswresample arm: Consistently use proper interworking function returns 2024-10-09 15:52:51 +03:00
libswscale swscale/graph: add new high-level scaler dispatch mechanism 2024-11-25 11:02:16 +01:00
presets
tests swscale: eliminate redundant SwsInternal accesses 2024-11-25 10:59:52 +01:00
tools enc_recon_frame_test: don't print an error on EOF. 2024-11-13 09:26:22 -05:00
.gitattributes
.gitignore .gitignore: add exclusions for shader .c files 2024-11-18 07:54:21 +01:00
.mailmap
Changelog lavc: deprecate the omx encoders 2024-11-09 02:46:17 +01:00
configure avcodec/mediacodecenc: add async mode support 2024-11-20 19:23:51 +08:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md
MAINTAINERS MAINTAINERS: Remove Guillaume Poirier and Romain Dolbeau 2024-11-25 03:13:33 +01:00
Makefile
README.md
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +02:00

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 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.