Go to file

Ganesh Ajjanagadde 92e483f8ed all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

FFDIFFSIGN was created explicitly for this purpose, since the common
return a - b idiom is unsafe regarding overflow on signed integers. It
optimizes to branchless code on common compilers.

FFDIFFSIGN also has the subjective benefit of being easier to read due
to lack of ternary operators.

Tested with FATE.

Things not covered by this are unsigned integers, for which overflows
are well defined, and also places where overflow is clearly impossible,
e.g an instance where the a - b was being done on 24 bit values.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

2015-11-03 16:28:30 -05:00

compat

Merge commit '407ac22322e5ce67996ec54ef619cafa4c9ceb78'

2015-11-02 11:58:27 +01:00

doc

avformat: add acm demuxer

2015-11-03 12:26:09 +01:00

libavcodec

avcodec: add Interplay ACM decoder

2015-11-03 12:01:27 +01:00

libavdevice

gdigrab: grab right desktop size if DPI in use, based on patch from Alexander Brotzge

2015-10-31 23:08:02 +11:00

libavfilter

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

2015-11-03 16:28:30 -05:00

libavformat

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

2015-11-03 16:28:30 -05:00

libavresample

avresample/resample: remove unused variable

2015-09-19 23:40:34 +02:00

libavutil

avutil/common: add FFDIFFSIGN macro

2015-11-03 16:28:12 -05:00

libpostproc

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

2015-09-05 21:35:46 +02:00

libswresample

swr: do not reject channel layouts that use channel 63

2015-10-28 19:25:49 +01:00

libswscale

swscale: rename sws_rgb2rgb_init to ff_sws_rgb2rgb_init

2015-10-29 23:49:46 +01:00

presets

presets: remove moldering iPod presets

2014-06-17 16:15:04 -08:00

tests

fate: update fate-source ref file

2015-11-03 15:05:32 -03:00

tools

Replace remaining occurances of av_free_packet with av_packet_unref

2015-10-27 14:35:30 +01:00

.gitattributes

Treat all '*.pnm' files as non-text file

2014-11-28 17:52:43 -05:00

.gitignore

gitignore: ignore object file temporaries

2015-10-10 20:30:41 +02:00

.travis.yml

Merge commit '1e0b8bf0b3b3b4247fb21e9839af342ae879607c'

2015-09-12 13:31:22 +02:00

arch.mak

use mmi instead of loongson3 as simd-optimization flag

2015-07-07 03:46:57 +02:00

Changelog

avformat: add acm demuxer

2015-11-03 12:26:09 +01:00

cmdutils_common_opts.h

opts: add list device sources/sinks options

2014-10-25 20:20:31 +02:00

cmdutils_opencl.c

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

2015-11-03 16:28:30 -05:00

cmdutils.c

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

2015-11-03 16:28:30 -05:00

cmdutils.h

cmdutils: remove sws_opts usage, simplify code

2015-08-08 16:51:25 +02:00

common.mak

Merge commit 'c1aac39eaccd32dc3b74ccfcce701d3d888fbc6b'

2015-10-14 13:54:50 +02:00

configure

Merge commit 'a0562e531723923b632684c7b51a9dd584bf534f'

2015-11-02 11:58:16 +01:00

COPYING.GPLv2

…

COPYING.GPLv3

…

COPYING.LGPLv2.1

…

COPYING.LGPLv3

…

CREDITS

CREDITS: redirect to Git log, remove current outdated content

2013-01-31 18:02:52 +01:00

ffmpeg_dxva2.c

ffmpeg_dxva2: call GetDesktopWindow() in place of GetShellWindow()

2015-06-03 16:25:08 +02:00

ffmpeg_filter.c

ffmpeg_filter: check encoder before using it to set frame size.

2015-10-30 10:55:10 +01:00

ffmpeg_opt.c

all: remove some casts of function pointer to void *

2015-10-24 15:14:59 -04:00

ffmpeg_qsv.c

Merge commit 'fb472e1a11a4e0caed2c3c91da01ea8e35d9e3f8'

2015-10-22 16:18:02 +02:00

ffmpeg_vdpau.c

ffmpeg_vdpau: Ignore decoder's max supported level

2015-08-16 15:02:33 -07:00

ffmpeg_videotoolbox.c

ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT

2015-10-15 10:22:31 +02:00

ffmpeg.c

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

2015-11-03 16:28:30 -05:00

ffmpeg.h

ffmpeg: add abort_on option to allow aborting on empty output

2015-10-22 19:03:01 +02:00

ffplay.c

Replace remaining occurances of av_free_packet with av_packet_unref

2015-10-27 14:35:30 +01:00

ffprobe.c

ffprobe: add support for printing packet strings metadata as packet tags

2015-10-30 20:47:43 +01:00

ffserver_config.c

ffserver_config: check for INT_MIN before doing FFABS

2015-10-13 19:40:09 -04:00

ffserver_config.h

ffserver: Use singlejpeg muxer for jpeg

2015-06-08 03:36:22 +02:00

ffserver.c

Replace remaining occurances of av_free_packet with av_packet_unref

2015-10-27 14:35:30 +01:00

INSTALL.md

INSTALL: add markdown syntax

2014-05-28 22:38:38 +02:00

library.mak

build: add LDLIBFLAGS

2015-07-08 14:35:02 +02:00

LICENSE.md

avfilter: add rubberband wrapper

2015-09-20 19:54:57 +02:00

MAINTAINERS

MAINTAINERS: add key fingerprint

2015-10-25 19:15:04 -04:00

Makefile

Merge commit 'fb472e1a11a4e0caed2c3c91da01ea8e35d9e3f8'

2015-10-22 16:18:02 +02:00

README.md

README: replace http with https

2015-10-06 13:27:29 +02:00

RELEASE

RELEASE: update to 2.8.git

2015-09-09 23:53:15 -03:00

version.sh

version.sh: add note that ffversion.h is auto-generated

2015-10-25 10:14:44 -04:00

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 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 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. Few developers follow pull requests so they will likely be ignored.

Languages

C 92.1%

Assembly 6%

Makefile 1.2%

C++ 0.3%

Objective-C 0.2%

Other 0.1%