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Mark Reid 716b396740 avfilter/vf_lut3d: add x86-optimized tetrahedral interpolation I spotted an interesting pattern that I didn't see before that leads to the implementation being faster. The bit shifting table I was using before is no longer needed, and was able to remove quite a few lines. I also add use of FMA on the AVX2 version. f32 1920x1080 1 thread with prelut c impl 1434012700 UNITS in lut3d->interp, 1 runs, 0 skips 1434035335 UNITS in lut3d->interp, 2 runs, 0 skips 1423615347 UNITS in lut3d->interp, 4 runs, 0 skips 1426268863 UNITS in lut3d->interp, 8 runs, 0 skips sse2 905484420 UNITS in lut3d->interp, 1 runs, 0 skips 905659010 UNITS in lut3d->interp, 2 runs, 0 skips 915167140 UNITS in lut3d->interp, 4 runs, 0 skips 915834222 UNITS in lut3d->interp, 8 runs, 0 skips avx 574794860 UNITS in lut3d->interp, 1 runs, 0 skips 581035090 UNITS in lut3d->interp, 2 runs, 0 skips 584116720 UNITS in lut3d->interp, 4 runs, 0 skips 581460290 UNITS in lut3d->interp, 8 runs, 0 skips avx2 301698880 UNITS in lut3d->interp, 1 runs, 0 skips 301982880 UNITS in lut3d->interp, 2 runs, 0 skips 306962430 UNITS in lut3d->interp, 4 runs, 0 skips 305472025 UNITS in lut3d->interp, 8 runs, 0 skips gbrap16 1920x1080 1 thread with prelut c impl 1480894840 UNITS in lut3d->interp, 1 runs, 0 skips 1502922990 UNITS in lut3d->interp, 2 runs, 0 skips 1496114307 UNITS in lut3d->interp, 4 runs, 0 skips 1492554551 UNITS in lut3d->interp, 8 runs, 0 skips sse2 980777180 UNITS in lut3d->interp, 1 runs, 0 skips 986121520 UNITS in lut3d->interp, 2 runs, 0 skips 986489840 UNITS in lut3d->interp, 4 runs, 0 skips 998832248 UNITS in lut3d->interp, 8 runs, 0 skips avx 622212360 UNITS in lut3d->interp, 1 runs, 0 skips 622981160 UNITS in lut3d->interp, 2 runs, 0 skips 645396315 UNITS in lut3d->interp, 4 runs, 0 skips 641057075 UNITS in lut3d->interp, 8 runs, 0 skips avx2 321336400 UNITS in lut3d->interp, 1 runs, 0 skips 321268920 UNITS in lut3d->interp, 2 runs, 0 skips 323459895 UNITS in lut3d->interp, 4 runs, 0 skips 324949967 UNITS in lut3d->interp, 8 runs, 0 skips		2021-10-10 22:23:48 +02:00
compat	Replace all occurences of av_mallocz_array() by av_calloc()	2021-09-20 01:03:52 +02:00
doc	avcodec: add native Speex decoder	2021-10-10 17:44:41 +02:00
ffbuild	avfilter: compress CUDA PTX code if possible	2021-06-22 14:05:44 +02:00
fftools	fftools/ffmpeg, ffmpeg_opt: Allocate (In\|Out)putStream.pkt early	2021-10-08 16:03:21 +02:00
libavcodec	avcodec/lagarith: return early on error	2021-10-10 22:05:54 +02:00
libavdevice	avdevice/caca: Don't free AVOpt-enabled string manually	2021-10-09 14:18:12 +02:00
libavfilter	avfilter/vf_lut3d: add x86-optimized tetrahedral interpolation	2021-10-10 22:23:48 +02:00
libavformat	avformat/librist: replace deprecated functions	2021-10-10 17:25:23 +02:00
libavutil	avutil/detection_bbox: Fix av_detection_bbox_alloc failed if nb_bboxes == 0	2021-10-08 10:11:59 +08:00
libpostproc	libpostproc/postprocess_template: Don't reimplement FFSWAP	2021-10-02 17:13:42 +02:00
libswresample	swresample/aarch64: fix relocation out of range error	2021-09-25 21:55:29 +03:00
libswscale	swscale/swscale: Pass slice location into unscaled code also for dst scaling	2021-10-03 20:38:29 +02:00
presets
tests	tests/fate-run: Use DEC_OPTS for additional input, too	2021-10-08 12:06:00 +02:00
tools	tools/target_dec_fuzzer: Adjust threshold for WMV2	2021-09-26 17:22:22 +02:00
.gitattributes	fate: add SCC test	2017-01-27 17:06:42 +01:00
.gitignore	avfilter: compress CUDA PTX code if possible	2021-06-22 14:05:44 +02:00
.mailmap	mailmap: add entry for myself	2021-03-09 02:09:55 +00:00
.travis.yml	Merge commit '`899ee03088`'	2019-03-14 15:53:16 -03:00
Changelog	avcodec: add native Speex decoder	2021-10-10 17:44:41 +02:00
configure	configure: export pkg-config includedir variable	2021-10-09 09:50:12 -03:00
CONTRIBUTING.md	Add CONTRIBUTING.md	2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md	INSTALL.md: Fix Markdown formatting	2019-01-31 10:29:16 -09:00
LICENSE.md	avfilter/vf_geq: Relicense to LGPL	2019-12-28 11:20:48 +01:00
MAINTAINERS	avformat: add Argonaut Games CVG demuxer	2021-05-12 20:25:50 +10:00
Makefile	FATE: add a test for sliced scaling	2021-08-08 19:26:05 +02:00
README.md	README: fix typo and description of libavfilter	2021-10-08 09:44:34 +05:30
RELEASE	Bump Versions before release/4.4 branch	2021-03-20 01:01:12 +01:00

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 means to alter decoded audio and video through a directed graph of connected 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.
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.