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Martin Storsjö 0ca6640991 configure: Don't add -fPIC to asflags when targeting windows 
On X86 windows, asflags weren't actually ever used for anything,
since assembling used x86asflags instead, and that flags list
had -DPIC already.

This fixes building shared libraries with clang for arm/aarch64
windows. (This wasn't an issue when in msvc mode before, since
we don't try to enable pic at all there, since the msvc armasm
assembler fails on our pic constructs there.)

Signed-off-by: Martin Storsjö <martin@martin.st>
2017-10-12 21:49:13 +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 pixdesc: Add API to map color property names to enum values 2017-09-21 13:23:21 +02:00
libavcodec build: Remove check for gsm/gsm.h for libgsm 2017-10-10 23:20:16 +02:00
libavdevice build: Drop redundant check for soundcard.h 2017-10-10 23:20:17 +02:00
libavfilter qsv: Join the derived session to the parent 2017-09-27 12:27:34 +00:00
libavformat http: Reset compressed header flag when starting to read a request 2017-09-26 13:36:21 +03:00
libavresample Bump major versions of all libraries 2017-03-23 09:56:20 +01:00
libavutil build: CryptGenRandom --> wincrypt, it is a better name 2017-10-12 20:04:18 +02:00
libswscale build: Drop check for sys/mman.h in favor of mmap() check 2017-10-10 23:20:16 +02:00
presets
tests checkasm: Test more h264 idct variants 2017-09-27 13:58:39 +03:00
tools aviocat: Check for output write errors 2017-09-04 09:42:52 +03:00
.gitattributes
.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
Changelog libavfilter/overlay_qsv: Add QSV overlay vpp filter 2017-09-17 19:59:06 +02:00
configure configure: Don't add -fPIC to asflags when targeting windows 2017-10-12 21:49:13 +03:00
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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

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.