mirror of https://git.ffmpeg.org/ffmpeg.git
115476018d
This work is sponsored by, and copyright, Google. This reduces the code size of libavcodec/aarch64/vp9itxfm_neon.o from 19496 to 14740 bytes. This gives a small slowdown of a couple of tens of cycles, but makes it more feasible to add more optimized versions of these transforms. Before: vp9_inv_dct_dct_16x16_sub4_add_neon: 1036.7 vp9_inv_dct_dct_16x16_sub16_add_neon: 1372.2 vp9_inv_dct_dct_32x32_sub4_add_neon: 5180.0 vp9_inv_dct_dct_32x32_sub32_add_neon: 8095.7 After: vp9_inv_dct_dct_16x16_sub4_add_neon: 1051.0 vp9_inv_dct_dct_16x16_sub16_add_neon: 1390.1 vp9_inv_dct_dct_32x32_sub4_add_neon: 5199.9 vp9_inv_dct_dct_32x32_sub32_add_neon: 8125.8 Signed-off-by: Martin Storsjö <martin@martin.st> |
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|---|---|---|
| avbuild | ||
| compat | ||
| doc | ||
| libavcodec | ||
| libavdevice | ||
| libavfilter | ||
| libavformat | ||
| libavresample | ||
| libavutil | ||
| libswscale | ||
| presets | ||
| tests | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| COPYING.GPLv2 | ||
| COPYING.GPLv3 | ||
| COPYING.LGPLv2.1 | ||
| COPYING.LGPLv3 | ||
| CREDITS | ||
| Changelog | ||
| INSTALL | ||
| LICENSE | ||
| Makefile | ||
| README | ||
| README.md | ||
| RELEASE | ||
| avconv.c | ||
| avconv.h | ||
| avconv_dxva2.c | ||
| avconv_filter.c | ||
| avconv_opt.c | ||
| avconv_qsv.c | ||
| avconv_vaapi.c | ||
| avconv_vda.c | ||
| avconv_vdpau.c | ||
| avplay.c | ||
| avprobe.c | ||
| cmdutils.c | ||
| cmdutils.h | ||
| configure | ||
README.md
Libav
Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libavresampleimplements audio mixing and resampling routines.libswscaleimplements 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,ismindexandqt-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.