mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-02-14 22:22:59 +02:00

Go to file

Ganesh Ajjanagadde 5989add4ab lavu/x86/lls: add fma3 optimizations for update_lls

This improves accuracy (very slightly) and speed for processors having
fma3.

Sample benchmark (fate flac-16-lpc-cholesky, Haswell):
old:
5993610 decicycles in ff_lpc_calc_coefs,      64 runs,      0 skips
5951528 decicycles in ff_lpc_calc_coefs,     128 runs,      0 skips

new:
5252410 decicycles in ff_lpc_calc_coefs,      64 runs,      0 skips
5232869 decicycles in ff_lpc_calc_coefs,     128 runs,      0 skips

Tested with FATE and --disable-fma3, also examined contents of
lavu/lls-test.

Reviewed-by: James Almer <jamrial@gmail.com>
Reviewed-by: Henrik Gramner <henrik@gramner.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

2016-01-15 16:46:13 -05:00

compat

os2threads: Add pthread_once()

2015-11-12 22:31:46 +01:00

doc

avfilter: add ahistogram multimedia filter

2016-01-15 19:10:46 +01:00

libavcodec

avformat/riff: add YUYV FourCC (Drastic YUYV)

2016-01-15 19:14:51 +01:00

libavdevice

Correct two build/built typos

2016-01-11 20:53:11 -08:00

libavfilter

avfilter/af_sidechaincompress & af_agate: use audio fifo from lavu

2016-01-15 21:49:42 +01:00

libavformat

avformat/riff: add C210 FourCC (Canopus C210)

2016-01-15 19:22:51 +01:00

libavresample

Merge commit 'cc4c24208159200b7aff5b5c313903c7f23fa345'

2016-01-02 10:13:58 +01:00

libavutil

lavu/x86/lls: add fma3 optimizations for update_lls

2016-01-15 16:46:13 -05:00

libpostproc

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

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

libswresample

swr/resample: use av_clip_int16 instead of av_clip

2015-12-24 11:29:52 -08:00

libswscale

swscale/vscale: Use matching sliceY/chrSliceY for luma/chroma

2016-01-14 23:49:52 +01:00

presets

…

tests

fate: add test for realtime ccaption decoder

2016-01-14 22:41:41 +01:00

tools

avcodec: Remove libstagefright

2016-01-06 16:43:06 +00:00

.gitattributes

…

.gitignore

gitignore: ignore object file temporaries

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

.travis.yml

Merge commit 'eda183287489b2c705843aa373a19c4e46fb2fec'

2015-11-22 17:12:24 +00:00

arch.mak

mips: rename mipsdspr1 to mipsdsp

2015-12-04 02:35:42 +01:00

Changelog

avfilter: add ahistogram multimedia filter

2016-01-15 19:10:46 +01:00

cmdutils_common_opts.h

…

cmdutils_opencl.c

all: use FFDIFFSIGN to resolve possible undefined behavior in comparators

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

cmdutils.c

cosmetics: Fix weird indentations

2015-12-07 10:43:43 -08:00

cmdutils.h

cmdutils: remove sws_opts usage, simplify code

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

common.mak

Merge commit '9f57f134c19773d54269b6cb9ee455ff87c2e9e1'

2015-12-05 12:21:33 +01:00

configure

avfilter: add spectrumsynth filter

2016-01-14 20:51:20 +01:00

COPYING.GPLv2

…

COPYING.GPLv3

…

COPYING.LGPLv2.1

…

COPYING.LGPLv3

…

CREDITS

…

ffmpeg_dxva2.c

ffmpeg_dxva2: support vp9 hwaccel

2015-12-07 09:47:51 +01:00

ffmpeg_filter.c

ffmpeg_filter: remove redundant null ptr check

2015-11-11 01:51:52 +01:00

ffmpeg_opt.c

ffmpeg: use lavf API for applying bitstream filters

2015-12-28 08:34:30 -06:00

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

ffmpeg: check fclose return values

2016-01-07 16:57:37 -08:00

ffmpeg.h

ffmpeg: use lavf API for applying bitstream filters

2015-12-28 08:34:30 -06:00

ffplay.c

Revert "ffplay: Fix auto insertion point of rotation filter"

2015-12-28 03:44:31 +01:00

ffprobe.c

ffprobe: avoid unnecessary pow and exp2 calls

2015-12-29 08:59:16 -08:00

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

ffserver: Cast time_t value when using it in a format string.

2015-12-29 16:00:34 +01:00

INSTALL.md

…

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

avcodec: Remove libstagefright

2016-01-06 16:43:06 +00:00

Makefile

mips: rename mipsdspr1 to mipsdsp

2015-12-04 02:35:42 +01:00

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 90.3%

Assembly 7.8%

Makefile 1.3%

C++ 0.2%

Objective-C 0.2%

Other 0.1%