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Martin Storsjö 9dde6ab06c arm: Fix SIGBUS on ARM when compiled with binutils 2.29 
In binutils 2.29, the behavior of the ADR instruction changed so that 1 is
added to the address of a Thumb function (previously nothing was added). This
allows the loaded address to be passed to a BLX instruction and the correct
mode change will occur.

See: https://sourceware.org/bugzilla/show_bug.cgi?id=21458

By using adr with a label that isn't annotated as a thumb function,
we avoid the new behaviour in binutils 2.29 and get the same behaviour
as in prior releases, and as in other assemblers (ms armasm.exe,
clang's built in assembler) - an idea that Janne Grunau came up with.

Signed-off-by: Martin Storsjö <martin@martin.st>
 		2017-09-02 22:18:20 +03:00
avbuild msvc: Properly specify dllexport for data symbols shared across dll boundaries 2017-08-31 14:22:06 +03:00
avtools avconv: when using -loop option bail out if seek to start fails 2017-07-28 13:13:44 +02:00
compat makedef: Extend the script for use with mingw tools as well 2017-08-31 14:22:18 +03:00
doc lavf: make avio_read_partial() public 2017-08-30 14:29:14 +02:00
libavcodec arm: Fix SIGBUS on ARM when compiled with binutils 2.29 2017-09-02 22:18:20 +03:00
libavdevice avfoundation: update to use AVCodecParameters 2017-04-26 11:47:31 -04:00
libavfilter yadif: Account for the buffer alignment while processing the frame edges 2017-08-22 22:31:19 +02:00
libavformat Remove support for building for mingw32ce (Windows CE) 2017-08-31 14:21:08 +03:00
libavresample Bump major versions of all libraries 2017-03-23 09:56:20 +01:00
libavutil msvc: Properly specify dllexport for data symbols shared across dll boundaries 2017-08-31 14:22:06 +03:00
libswscale swscale: Do not expand a macro with 'defined' in it 2017-08-28 10:26:14 +02:00
presets
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tests checkasm: Test more h264 idct variants 2017-08-31 14:55:34 +03:00
tools Remove support for building for mingw32ce (Windows CE) 2017-08-31 14:21:08 +03:00
.gitattributes
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.gitignore build: Ignore generated .version files 2017-02-03 11:37:53 +01:00
.travis.yml travis: Exclude gcc for the macOS target 2017-04-20 12:53:08 +02:00
COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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Changelog hevcdec: add a CUVID hwaccel 2017-07-28 14:12:56 +02:00
INSTALL
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LICENSE Remove the legacy X11 screen grabber 2016-07-29 19:03:10 +02:00
Makefile build: Allow generating dependencies as a side-effect of assembling 2017-03-01 10:18:15 +01:00
README.md doc: Add travis badge 2015-09-14 00:19:08 +02:00
RELEASE Make the RELEASE file match with the most recent tag 2016-10-14 13:52:51 -04:00
configure configure: Use dllexport/dllimport for data symbols across DLLs with mingw 2017-08-31 14:22:22 +03:00

README.md

Libav

Build Status

Libav 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.
  • libavresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • avconv is a command line toolbox to manipulate, convert and stream multimedia content.
  • avplay is a minimalistic multimedia player.
  • avprobe is a simple analisys 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

Conding examples are available in the doc/example directory.

License

Libav codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.