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Martin Storsjö e1f9de86f4 arm/aarch64: vp9lpf: Calculate !hev directly 
Previously we first calculated hev, and then negated it.

Since we were able to schedule the negation in the middle
of another calculation, we don't see any gain in all cases.

Before:                     Cortex A7      A8      A9     A53  A53/AArch64
vp9_loop_filter_v_4_8_neon:     147.0   129.0   115.8    89.0         88.7
vp9_loop_filter_v_8_8_neon:     242.0   198.5   174.7   140.0        136.7
vp9_loop_filter_v_16_8_neon:    500.0   419.5   382.7   293.0        275.7
vp9_loop_filter_v_16_16_neon:   971.2   825.5   731.5   579.0        453.0
After:
vp9_loop_filter_v_4_8_neon:     143.0   127.7   114.8    88.0         87.7
vp9_loop_filter_v_8_8_neon:     241.0   197.2   173.7   140.0        136.7
vp9_loop_filter_v_16_8_neon:    497.0   419.5   379.7   293.0        275.7
vp9_loop_filter_v_16_16_neon:   965.2   818.7   731.4   579.0        452.0

Signed-off-by: Martin Storsjö <martin@martin.st>
2017-02-11 00:43:59 +02:00
avbuild build: Add version numbers to "Requires" entries in pkg-config files 2016-12-28 17:41:54 +01:00
compat compat/atomics: add typecasts in atomic_compare_exchange_strong() 2016-12-08 15:53:58 -05:00
doc lavc: deprecate refcounted_frames field 2017-02-01 10:47:46 +01:00
libavcodec arm/aarch64: vp9lpf: Calculate !hev directly 2017-02-11 00:43:59 +02:00
libavdevice build: Generate pkg-config files from Make and not from configure 2016-12-22 12:30:54 +01:00
libavfilter Mark some arrays that never change as const. 2017-02-01 10:42:59 +01:00
libavformat mov: Rework stsc index validation 2017-02-10 16:26:16 -05:00
libavresample Mark some arrays that never change as const. 2017-02-01 10:42:59 +01:00
libavutil imgutils: Document av_image_get_buffer_size() 2017-02-10 16:25:58 -05:00
libswscale swscale-test: const correctness for pointer variable 2017-01-24 13:03:57 +01:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests fate: Skip the checkasm test if CONFIG_STATIC is disabled 2017-01-09 13:57:02 +02:00
tools build: Move entries related to building TOOLS to a subdirectory Makefile 2016-12-07 11:02:31 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore build: Ignore generated .version files 2017-02-03 11:37:53 +01:00
.travis.yml travis: Enable OSX integration 2015-11-17 16:51:00 +01:00
avconv_dxva2.c avconv_dxva2: add a profile check for hevc 2016-07-20 16:33:09 +02:00
avconv_filter.c avconv: make sure the filtergraph is freed on init failure 2016-10-02 11:41:45 +02:00
avconv_opt.c avconv: allow -b to be used with streamcopy 2017-02-01 10:42:59 +01:00
avconv_qsv.c avconv_qsv: use the actual pixel format provided by lavc 2016-07-22 19:08:12 +02:00
avconv_vaapi.c avconv_vaapi: Convert to use hw_frames_ctx only 2016-08-30 22:16:01 +01:00
avconv_vda.c avconv: vda: Unlock the pixel buffer once it is accessed 2015-07-09 00:10:13 +02:00
avconv_vdpau.c avconv_vdpau: use the hwcontext device creation API 2016-05-26 15:40:34 +02:00
avconv.c avconv: allow -b to be used with streamcopy 2017-02-01 10:42:59 +01:00
avconv.h avconv: allow -b to be used with streamcopy 2017-02-01 10:42:59 +01:00
avplay.c Replace cmdutils_common_opts.h by a macro 2017-01-12 11:42:21 +01:00
avprobe.c Replace cmdutils_common_opts.h by a macro 2017-01-12 11:42:21 +01:00
Changelog vaapi_encode: Add VP8 support 2017-01-30 23:03:46 +00:00
cmdutils.c cmdutils: update copyright year to 2017 2017-01-01 17:10:11 -05:00
cmdutils.h Replace cmdutils_common_opts.h by a macro 2017-01-12 11:42:21 +01:00
configure configure: Correctly recurse in do_check_deps() 2017-02-08 21:23:41 +01:00
COPYING.GPLv2 Rename COPYING.GPL --> COPYING.GPLv2 and COPYING.LGPL --> COPYING.LGPLv2.1. 2009-06-05 09:51:31 +00:00
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS partially rename FFmpeg to Libav 2011-03-16 21:54:39 +01:00
INSTALL doc: clarify configure features 2011-04-07 02:54:12 +02:00
LICENSE Remove the legacy X11 screen grabber 2016-07-29 19:03:10 +02:00
Makefile Replace cmdutils_common_opts.h by a macro 2017-01-12 11:42:21 +01:00
README doc: Add more information in the README 2014-08-16 00:49:22 +02:00
README.md doc: Add travis badge 2015-09-14 00:19:08 +02:00
RELEASE Make the RELEASE file match with the most recent tag 2016-10-14 13:52:51 -04:00

README.md

Libav

Build Status

Libav 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.
  • libavresample implements audio mixing and resampling routines.
  • libswscale implements 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, 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

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.