virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity
Mirror of https://git.ffmpeg.org/ffmpeg.git
114,239 Commits 37 Branches 400 Tags 473 MiB
C 90.3%
Assembly 7.8%
Makefile 1.3%
C++ 0.2%
Objective-C 0.2%
Other 0.1%
f1b08b8a65
Go to file
Andreas Rheinhardt f1b08b8a65 avcodec/mips/aaccoder_mips: Remove MIPS-specific aaccoder 
ff_aac_coder_init_mips() modifies a static const structure of
function pointers. This will crash if the binary uses relro
and is a data race in any case.

Furthermore it points to a maintainability issue: The
AACCoefficientsEncoder structures have been constified
in commit fd9212f2ed,
a Libav commit merged in 318778de9e.
Libav did not have the MIPS-specific AAC code and so this was
fine for them; yet FFmpeg had them, but this was not recognized.

Commit 75a099fc73 points to another
maintainability issue: Contrary to ordinary DSP code, this code
here is way more complex and needs to be constantly kept in sync
with the ordinary code which it mimicks and replaces. Said commit
is the only commit actually changing aaccoder.c in the last few
years and the same change has not been performed for the MIPS
clone; before that, it even happened several times that the mips
code was broken due to changes of the generic code (see commits
97437bd17a and
de262d018d or
860dbe0275 or
933309a6ca or
b65ffa316e). This might even lead
to scenarios where someone changing non-dsp aacenc code would
have to modify mips inline asm in order to keep them in sync.
This is obviously a significant burden (if the AAC encoder were
actively developed).

Finally, the code does not even compile here due to errors like
"Error: float register should be even, was 1".

Reviewed-by: Lynne <dev@lynne.ee>
Reviewed-by: Jean-Baptiste Kempf <jb@videolan.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-18 01:49:38 +01:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc doc/filters: Change rdiv (vf_convolution) documentation to reflect actual behavior 2024-03-16 22:02:56 +01:00
ffbuild makefile: Clean up missed object files with "make clean" 2024-03-10 23:45:51 +02:00
fftools fftools/ffmpeg_opt: Check before accessing union member 2024-03-17 15:10:05 +01:00
libavcodec avcodec/mips/aaccoder_mips: Remove MIPS-specific aaccoder 2024-03-18 01:49:38 +01:00
libavdevice avdevice/alldevices: Mark iterators as av_cold 2024-03-17 15:10:05 +01:00
libavfilter avfilter/vsrc_ddagrab: clear all flags of buffer texture 2024-03-16 00:44:58 +01:00
libavformat avformat/aiffenc: Usw avio_wb32() where possible 2024-03-17 16:09:15 +01:00
libavutil avutil/hash: Avoid relocations for hash names 2024-03-18 01:48:46 +01:00
libpostproc libs: bump major version for all libraries 2024-03-07 11:29:43 -03:00
libswresample libs: bump major version for all libraries 2024-03-07 11:29:43 -03:00
libswscale avutil/x86util: Fix broken pre-SSE4.1 PMINSD emulation 2024-03-17 13:52:27 +01:00
presets
tests fate/lavf-audio: Test writing AIFF-native tags 2024-03-17 16:08:13 +01:00
tools tools/target_dec_fuzzer: force experimental flag for decoders that need it 2024-03-15 22:38:13 -03:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap .mailmap: Update my mailmap entry 2024-02-23 00:17:21 +01:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog fftools/ffmpeg: add loopback decoding 2024-03-13 08:01:27 +01:00
configure configure: Remove av_restrict 2024-03-15 12:51:15 +01:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add myself as dvdvideo demuxer, rcwt muxer maintainer 2024-03-10 15:21:23 +01:00
Makefile tools: Add target_sws_fuzzer.c 2024-02-21 18:24:17 +01:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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.