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Rostislav Pehlivanov 70eb77b34e mdct15: add inverse transform postrotation SIMD

2.5ms frames:
Before   (c):  2638 decicycles in postrotate, 2097040 runs,    112 skips
After (sse3):  1467 decicycles in postrotate, 2097083 runs,     69 skips
After (avx2):  1244 decicycles in postrotate, 2097085 runs,     67 skips

5ms frames:
Before   (c):  4987 decicycles in postrotate, 1048371 runs,    205 skips
After (sse3):  2644 decicycles in postrotate, 1048509 runs,     67 skips
After (avx2):  2031 decicycles in postrotate, 1048523 runs,     53 skips

10ms frames:
Before   (c):  9153 decicycles in postrotate,  523575 runs,    713 skips
After (sse3):  5110 decicycles in postrotate,  523726 runs,    562 skips
After (avx2):  3738 decicycles in postrotate,  524223 runs,     65 skips

20ms frames:
Before   (c): 17857 decicycles in postrotate,  261866 runs,    278 skips
After (sse3): 10041 decicycles in postrotate,  261746 runs,    398 skips
After (avx2):  7050 decicycles in postrotate,  262116 runs,     28 skips

Improves total decoding performance for real world content by 9% with avx2.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

2017-07-30 07:38:39 +01:00

compat

win32_dlfcn: Support WinRT/UWP.

2017-07-30 14:30:43 +10:00

doc

examples/hw_decode: Add a HWAccel decoding example.

2017-07-30 00:15:05 +01:00

ffbuild

build: Allow generating dependencies as a side-effect of assembling

2017-06-21 17:00:29 -03:00

libavcodec

mdct15: add inverse transform postrotation SIMD

2017-07-30 07:38:39 +01:00

libavdevice

avdevice: make ff_reverse available on shared builds

2017-07-20 00:33:29 -03:00

libavfilter

lavfi/testsrc2: fix completely transparent alpha.

2017-07-25 09:27:35 +02:00

libavformat

lavf/os_support: Use existing WinRT config value.

2017-07-30 14:31:04 +10:00

libavresample

build: Generalize yasm/nasm-related variable names

2017-06-21 17:00:29 -03:00

libavutil

fate: update pixfmt_best test to check for endianness

2017-07-27 08:53:37 +02:00

libpostproc

Merge commit '92db5083077a8b0f8e1050507671b456fd155125'

2017-05-04 19:59:30 -03:00

libswresample

libswresample: check input to swr_convert_frame for NULL

2017-07-08 18:13:43 +02:00

libswscale

build: Generalize yasm/nasm-related variable names

2017-06-21 17:00:29 -03:00

presets

…

tests

fate: update pixfmt_best test to check for endianness

2017-07-27 08:53:37 +02:00

tools

build: Generalize yasm/nasm-related variable names

2017-06-21 17:00:29 -03:00

.gitattributes

fate: add SCC test

2017-01-27 17:06:42 +01:00

.gitignore

build: add support for building .cu files via nvcc

2017-05-15 11:46:50 +02:00

.travis.yml

build: Prefer NASM assembler over YASM

2017-06-21 17:00:30 -03:00

Changelog

avformat: add SMPTE 337M demuxer

2017-07-19 12:27:33 +02:00

cmdutils_opencl.c

cmdutils_opencl: Fix read of uinitialized cl_mem

2017-05-11 13:02:12 +02:00

cmdutils.c

avformat, ffmpeg: deprecate old rotation API

2017-03-27 13:20:27 +02:00

cmdutils.h

Merge commit '122de16dd8108a59a55d30543c9f28b5f61b02d1'

2017-05-05 14:04:30 +02:00

configure

examples/hw_decode: Add a HWAccel decoding example.

2017-07-30 00:15:05 +01:00

CONTRIBUTING.md

Add CONTRIBUTING.md

2016-09-18 10:02:13 +01:00

COPYING.GPLv2

…

COPYING.GPLv3

…

COPYING.LGPLv2.1

…

COPYING.LGPLv3

…

CREDITS

…

ffmpeg_cuvid.c

ffmpeg_cuvid: adapt for recent filter graph initialization changes

2017-03-03 08:45:43 +01:00

ffmpeg_filter.c

ffmpeg: Support setting the hardware device to use when filtering

2017-06-14 22:27:07 +01:00

ffmpeg_hw.c

avconv_hw: Free device on initialisation failure

2017-06-18 17:07:25 +01:00

ffmpeg_opt.c

ffmpeg: reindent after previous commit

2017-07-18 10:39:38 +02:00

ffmpeg_qsv.c

ffmpeg: init filtergraphs only after we have a frame on each input

2017-03-03 08:45:43 +01:00

ffmpeg_videotoolbox.c

ffmpeg_videotoolbox: fix usage of av_get_codec_tag_string()

2017-03-29 14:49:29 +02:00

ffmpeg.c

ffmpeg: Fix typos in the comment for decode() ("." vs. "->")

2017-07-07 03:48:56 +02:00

ffmpeg.h

dxva: add support for new dxva2 and d3d11 hwaccel APIs

2017-06-27 18:05:02 +02:00

ffplay.c

ffplay: reindent after previous commit

2017-07-18 10:39:43 +02:00

ffprobe.c

ffprobe: add support for ICC Profile frame side data

2017-07-26 11:31:17 -03:00

ffserver_config.c

ffserver_config: Check for failure to allocate FFServerIPAddressACL

2016-12-22 19:23:08 +01:00

ffserver_config.h

ffsrever: Make the status page bitexact if any stream is bitexact

2016-11-29 19:26:26 +01:00

ffserver.c

Merge commit '122de16dd8108a59a55d30543c9f28b5f61b02d1'

2017-05-05 14:04:30 +02:00

INSTALL.md

…

LICENSE.md

Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c'

2017-03-15 22:07:47 +01:00

MAINTAINERS

MAINTAINERS: add myself

2017-07-21 12:18:48 -03:00

Makefile

dxva: add support for new dxva2 and d3d11 hwaccel APIs

2017-06-27 18:05:02 +02:00

README.md

Add CONTRIBUTING.md

2016-09-18 10:02:13 +01:00

RELEASE

Bump minor versions for master after release/3.3 branchpoint

2017-03-31 13:21:06 +02:00

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 and will be ignored.

Languages

C 90.3%

Assembly 7.8%

Makefile 1.3%

C++ 0.2%

Objective-C 0.2%

Other 0.1%