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Martin Storsjö cad42fadcd aarch64: vp9itxfm: Skip empty slices in the first pass of idct_idct 16x16 and 32x32

This work is sponsored by, and copyright, Google.

Previously all subpartitions except the eob=1 (DC) case ran with
the same runtime:

vp9_inv_dct_dct_16x16_sub16_add_neon:   1373.2
vp9_inv_dct_dct_32x32_sub32_add_neon:   8089.0

By skipping individual 8x16 or 8x32 pixel slices in the first pass,
we reduce the runtime of these functions like this:

vp9_inv_dct_dct_16x16_sub1_add_neon:     235.3
vp9_inv_dct_dct_16x16_sub2_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub4_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub8_add_neon:    1036.7
vp9_inv_dct_dct_16x16_sub12_add_neon:   1372.1
vp9_inv_dct_dct_16x16_sub16_add_neon:   1372.1
vp9_inv_dct_dct_32x32_sub1_add_neon:     555.1
vp9_inv_dct_dct_32x32_sub2_add_neon:    5190.2
vp9_inv_dct_dct_32x32_sub4_add_neon:    5180.0
vp9_inv_dct_dct_32x32_sub8_add_neon:    5183.1
vp9_inv_dct_dct_32x32_sub12_add_neon:   6161.5
vp9_inv_dct_dct_32x32_sub16_add_neon:   6155.5
vp9_inv_dct_dct_32x32_sub20_add_neon:   7136.3
vp9_inv_dct_dct_32x32_sub24_add_neon:   7128.4
vp9_inv_dct_dct_32x32_sub28_add_neon:   8098.9
vp9_inv_dct_dct_32x32_sub32_add_neon:   8098.8

I.e. in general a very minor overhead for the full subpartition case due
to the additional cmps, but a significant speedup for the cases when we
only need to process a small part of the actual input data.

Signed-off-by: Martin Storsjö <martin@martin.st>

2016-11-30 23:57:05 +02:00

compat

w32pthreads: Fix function pointer casts

2016-11-24 16:14:33 +01:00

doc

utils: Add av_stream_add_side_data()

2016-11-23 10:36:13 -05:00

libavcodec

aarch64: vp9itxfm: Skip empty slices in the first pass of idct_idct 16x16 and 32x32

2016-11-30 23:57:05 +02:00

libavdevice

Use avpriv_report_missing_feature() where appropriate

2016-11-08 17:54:34 +01:00

libavfilter

configure: Add missing asyncts filter, movie filter, and output example deps

2016-11-25 18:45:27 +01:00

libavformat

avisynth: Cast to the right type when loading avisynth library functions

2016-11-29 13:13:35 +01:00

libavresample

Fix some mismatches between function parameter and doxygen parameter names.

2016-11-21 14:29:10 +01:00

libavutil

hwcontext_vaapi: Don't abort on failing to allocate from a fixed-size pool

2016-11-26 18:03:05 +00:00

libswscale

swscale: Add GRAY12

2016-11-07 22:42:00 +01:00

presets

presets: spelling error in libvpx 1080p50_60

2011-10-22 00:28:56 +02:00

tests

arm: vp9itxfm: Skip empty slices in the first pass of idct_idct 16x16 and 32x32

2016-11-30 23:54:07 +02:00

tools

qt-faststart: Do not try to use fancy 64-bit seeking functions on mingw32ce

2016-11-24 16:14:27 +01:00

.gitattributes

Treat all '*.pnm' files as non-text file

2014-11-28 17:52:43 -05:00

.gitignore

build: Ignore generated mapfile and remove it on distclean

2016-05-27 11:27:24 +02:00

.travis.yml

travis: Enable OSX integration

2015-11-17 16:51:00 +01:00

arch.mak

ppc: vsx: Implement float_dsp

2015-05-31 12:07:11 +02:00

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_opt: Consistently iterate through hwaccels array in all cases

2016-11-13 19:06:38 +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: Fix the audio next dts computation

2016-11-29 10:38:01 +01:00

avconv.h

avconv: support parsing bitstream filter options

2016-11-02 10:08:28 +01:00

avplay.c

avplay: Correct function pointer assignments in options array

2016-11-08 17:20:30 +01:00

avprobe.c

avprobe: Add -show_stream_entry to get a single stream property

2016-11-01 11:27:52 -04:00

Changelog

Changelog: mark the release 12 branch

2016-08-31 08:08:32 +02:00

cmdutils_common_opts.h

avplay: Accept cpuflags option

2013-10-22 10:49:31 +02:00

cmdutils.c

avconv: switch to the new BSF API

2016-03-20 08:15:01 +01:00

cmdutils.h

avconv: use read_file() for reading the 2pass stats

2015-07-19 09:37:11 +02:00

common.mak

build: Simplify postprocessing of linker version script files

2016-05-29 16:49:16 +02:00

configure

configure: Integrate X11 checks into vaapi/vdpau checks

2016-11-29 19:14:07 +01:00

COPYING.GPLv2

…

COPYING.GPLv3

…

COPYING.LGPLv2.1

cosmetics: Delete empty lines at end of file.

2012-02-09 12:26:45 +01:00

COPYING.LGPLv3

…

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

library.mak

build: Drop duplicate asm recipe

2016-10-17 16:25:35 +02:00

LICENSE

Remove the legacy X11 screen grabber

2016-07-29 19:03:10 +02:00

Makefile

build: Hardcode avversion.h dependency

2016-10-27 11:54:06 +02:00

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

version.sh

build: remove hardcoded name of version header

2016-09-15 21:59:15 +02:00

README.md

Libav

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.

Languages

C 88.9%

Assembly 8.4%

Makefile 1.4%

GLSL 0.4%

C++ 0.3%

Other 0.4%