RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-26 17:32:06 +00:00
Code Issues Projects Releases Wiki Activity
FFmpeg git repo
116,515 Commits 1 Branch 400 Tags 244 MiB
C 90.3%
Assembly 7.8%
Makefile 1.3%
C++ 0.2%
Objective-C 0.2%
Other 0.1%
656a9664bf
Go to file
Rémi Denis-Courmont 656a9664bf checkasm/riscv: preserve T1 whilst calling... 
This preserves T1 whilst calling the instrumented function. In a Sci-Fi
setting where type-based Control Flow Integrity (CFI) is supported, the
calling code (i.e., the `checkasm` test case) will set T1 to the expected
value of the landing pad label (LPL) of the instrumented function.

The call wrapper will always use LPL zero which is a wild card. We should
preserve the value of T1 at least until the indirect call to the
instrumented function. Of course this is Sci-Fi, because:
1) there is no hardware (or even QEMU) support yet,
2) all our assembler functions currently use LPL zero anyway.

This uses T3 rather than T2 because indirect branches with T2 is reserved
for notionally direct calls made with an indirect call instruction (e.g.
due to GOT indirection), and are exempted from forward-edge CFI checks.
2024-08-01 18:44:01 +03:00
compat
doc lavc/qsvdec: Add VVC decoder 2024-07-30 13:40:21 +08:00
ffbuild
fftools fftools/ffprobe: implement dv_md_compression 2024-07-28 12:20:07 +02:00
libavcodec lavc/rv34dsp: use saturating add/sub for R-V V DC add 2024-08-01 18:43:04 +03:00
libavdevice avdevice/dshow: Don't skip audio devices if no video device is present 2024-07-24 14:45:20 +02:00
libavfilter lavfi/framesync: avoid forcing frame writability unnecessarily 2024-07-31 11:12:45 +02:00
libavformat avformat/iamf_parse: Check for 0 samples 2024-08-01 00:18:02 +02:00
libavutil lavu/riscv: fix return type 2024-08-01 18:44:01 +03:00
libpostproc
libswresample swresample/swresample: Rectify invalid function in the documentation 2024-07-02 21:57:17 +02:00
libswscale lavu/riscv: count bytes rather than words for bswap32 2024-07-30 18:41:51 +03:00
presets
tests checkasm/riscv: preserve T1 whilst calling... 2024-08-01 18:44:01 +03:00
tools tools/target_dec_fuzzer: Adjust threshold for RV30 2024-07-16 18:43:15 +02:00
.gitattributes
.gitignore
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog lavc/qsvdec: Add VVC decoder 2024-07-30 13:40:21 +08:00
configure configure: check if assembler supports RV zicbop 2024-07-30 18:41:51 +03:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: add myself as d3d12va_encode maintainer 2024-07-10 18:10:08 +02:00
Makefile
README.md
RELEASE

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.