mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-08-10 06:10:52 +02:00
5b281b476b32c35527c0eea5f42161c4acad83f9
Purpose: libavutil/thread.h: Fixed g++ build error when ASSERT_LEVEL is greater than 1. This is only relevant when thread.h is included by C++ files. In this case, the relevant code is only defined if HAVE_PTHREADS is defined as 1. Use configure --assert-level=2 to do so. Note: Issue discovered as a result of Coverity build failure. Cause of build failure pinpointed by Hendrik Leppkes. Comments: -- libavutil/thread.h: Altered ASSERT_PTHREAD_NORET definition such that it uses av_make_error_string instead of av_err2str(). av_err2str() uses a "parenthesized type followed by an initializer list", which is apparently not valid C++. This issue started occurring because thread.h is now included by the DeckLink C++ files. The alteration does the equivalent of what av_err2str() does, but instead declares the character buffer as a local variable. Signed-off-by: Marton Balint <cus@passwd.hu>
…
…
…
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
andqt-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.
Languages
C
90.1%
Assembly
7.9%
Makefile
1.3%
C++
0.2%
Objective-C
0.2%
Other
0.1%