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Martin Storsjö 638eceed47 aarch64: Add NEON optimizations for 10 and 12 bit vp9 MC 
This work is sponsored by, and copyright, Google.

This has mostly got the same differences to the 8 bit version as
in the arm version. For the horizontal filters, we do 16 pixels
in parallel as well. For the 8 pixel wide vertical filters, we can
accumulate 4 rows before storing, just as in the 8 bit version.

Examples of runtimes vs the 32 bit version, on a Cortex A53:
                                           ARM   AArch64
vp9_avg4_10bpp_neon:                      35.7      30.7
vp9_avg8_10bpp_neon:                      93.5      84.7
vp9_avg16_10bpp_neon:                    324.4     296.6
vp9_avg32_10bpp_neon:                   1236.5    1148.2
vp9_avg64_10bpp_neon:                   4639.6    4571.1
vp9_avg_8tap_smooth_4h_10bpp_neon:       130.0     128.0
vp9_avg_8tap_smooth_4hv_10bpp_neon:      440.0     440.5
vp9_avg_8tap_smooth_4v_10bpp_neon:       114.0     105.5
vp9_avg_8tap_smooth_8h_10bpp_neon:       327.0     314.0
vp9_avg_8tap_smooth_8hv_10bpp_neon:      918.7     865.4
vp9_avg_8tap_smooth_8v_10bpp_neon:       330.0     300.2
vp9_avg_8tap_smooth_16h_10bpp_neon:     1187.5    1155.5
vp9_avg_8tap_smooth_16hv_10bpp_neon:    2663.1    2591.0
vp9_avg_8tap_smooth_16v_10bpp_neon:     1107.4    1078.3
vp9_avg_8tap_smooth_64h_10bpp_neon:    17754.6   17454.7
vp9_avg_8tap_smooth_64hv_10bpp_neon:   33285.2   33001.5
vp9_avg_8tap_smooth_64v_10bpp_neon:    16066.9   16048.6
vp9_put4_10bpp_neon:                      25.5      21.7
vp9_put8_10bpp_neon:                      56.0      52.0
vp9_put16_10bpp_neon/armv8:              183.0     163.1
vp9_put32_10bpp_neon/armv8:              678.6     563.1
vp9_put64_10bpp_neon/armv8:             2679.9    2195.8
vp9_put_8tap_smooth_4h_10bpp_neon:       120.0     118.0
vp9_put_8tap_smooth_4hv_10bpp_neon:      435.2     435.0
vp9_put_8tap_smooth_4v_10bpp_neon:       107.0      98.2
vp9_put_8tap_smooth_8h_10bpp_neon:       303.0     290.0
vp9_put_8tap_smooth_8hv_10bpp_neon:      893.7     828.7
vp9_put_8tap_smooth_8v_10bpp_neon:       305.5     263.5
vp9_put_8tap_smooth_16h_10bpp_neon:     1089.1    1059.2
vp9_put_8tap_smooth_16hv_10bpp_neon:    2578.8    2452.4
vp9_put_8tap_smooth_16v_10bpp_neon:     1009.5     933.5
vp9_put_8tap_smooth_64h_10bpp_neon:    16223.4   15918.6
vp9_put_8tap_smooth_64hv_10bpp_neon:   32153.0   31016.2
vp9_put_8tap_smooth_64v_10bpp_neon:    14516.5   13748.1

These are generally about as fast as the corresponding ARM
routines on the same CPU (at least on the A53), in most cases
marginally faster.

The speedup vs C code is around 4-9x.

Signed-off-by: Martin Storsjö <martin@martin.st>
2017-01-24 22:36:05 +02:00
compat compat/atomics: rename header guards 2016-12-02 20:08:54 -03:00
doc avfilter: add EIA-608 line extractor 2017-01-24 10:20:10 +01:00
libavcodec aarch64: Add NEON optimizations for 10 and 12 bit vp9 MC 2017-01-24 22:36:05 +02:00
libavdevice lavd/lavfi: use buffersink accessors. 2017-01-12 14:06:16 +01:00
libavfilter avfilter: add EIA-608 line extractor 2017-01-24 10:20:10 +01:00
libavformat avformat/hlsenc: improve to write m3u8 head block 2017-01-24 22:25:29 +08:00
libavresample Bump minor versions after 3.2 branchpoint to seperate release 2016-10-26 20:52:42 +02:00
libavutil hwcontext_cuda: implement frames_get_constraints 2017-01-23 16:21:18 +01:00
libpostproc Bump minor versions after 3.2 branchpoint to seperate release 2016-10-26 20:52:42 +02:00
libswresample swresample/arm: cosmetic fixes 2017-01-13 21:24:25 +01:00
libswscale swscale/swscale: Fix dereference of stride array before null check 2016-12-23 21:47:47 +01:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests Merge commit '71a0472114' 2017-01-24 19:21:29 +01:00
tools tools/zmqsend: Do not truncate fgetc() return 2016-12-24 14:46:25 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore Merge commit '6641819fee' 2016-06-26 15:43:05 +02:00
.travis.yml Merge commit 'eda1832874' 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 EIA-608 line extractor 2017-01-24 10:20:10 +01:00
cmdutils.c cmdutils: remove duplicate windows.h include 2016-11-16 15:06:16 +01:00
cmdutils.h cmdutils: add show_demuxers and show_muxers 2016-11-08 01:56:31 +01:00
cmdutils_common_opts.h cmdutils: add show_demuxers and show_muxers 2016-11-08 01:56:31 +01:00
cmdutils_opencl.c cmdutils_opencl: fix resource_leak cid 1396852 2017-01-13 07:54:49 +08:00
common.mak Merge commit 'c5fd4b5061' 2016-06-27 19:39:46 +02:00
configure vaapi_hevc: Convert to use the new VAAPI hwaccel code 2017-01-17 23:06:46 +00:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg.c ffmpeg: pass output stream duration as a hint to the muxer 2017-01-19 01:54:49 +01:00
ffmpeg.h ffmpeg: Add -time_base option to hint the time base 2017-01-14 20:03:56 +01:00
ffmpeg_cuvid.c doc: fix spelling errors 2016-10-21 23:58:47 +02:00
ffmpeg_dxva2.c Merge commit '18c506e9e6' 2016-06-26 15:34:01 +02:00
ffmpeg_filter.c ffmpeg: use buffersink accessors. 2017-01-12 14:06:16 +01:00
ffmpeg_opt.c ffmpeg: Add -time_base option to hint the time base 2017-01-14 20:03:56 +01:00
ffmpeg_qsv.c ffmpeg: Add an option "qsv_device" to choose proper node for QSV child device (vaapi or dxva2) 2017-01-11 20:21:09 +00:00
ffmpeg_vaapi.c ffmpeg_vaapi: Convert to use hw_frames_ctx only 2017-01-17 23:06:46 +00:00
ffmpeg_vdpau.c Merge commit 'f72db3f2f3' 2016-06-26 15:29:39 +02:00
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffplay.c ffplay: fix indentation after last commit 2017-01-22 16:17:50 +01:00
ffprobe.c lavc: Add spherical packet side data API 2016-12-07 14:40:06 -05:00
ffserver.c ffserver: local OOB write with custom program name 2017-01-08 03:50:56 +01:00
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
INSTALL.md
library.mak Merge commit 'c5fd4b5061' 2016-06-27 19:39:46 +02:00
LICENSE.md lavfi/f_ebur128: relicense to LGPL 2016-11-27 20:46:20 +01:00
MAINTAINERS dxva2: allow an empty array of ID3D11VideoDecoderOutputView 2017-01-16 02:54:04 +01:00
Makefile Merge commit '6641819fee' 2016-06-26 15:43:05 +02:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE RELEASE: Update for past 3.2 branch 2016-10-26 20:52:43 +02:00
version.sh version.sh: Fix spurious rebuilds. 2016-03-10 09:53:10 +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 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.