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Steinar H. Gunderson e3c14eaa54 speedhq: fix decoding artifacts

The quantization table is stored in the natural order, but when we
access it, we use an index that's in zigzag order, causing us to read
the wrong value. This causes artifacts, especially in areas with
horizontal or vertical edges. The artifacts look a lot like the
DCT ringing artifacts you'd expect to see from a low-bitrate file,
but when comparing to NewTek's own decoder, it's obvious they're not
supposed to be there.

Fix by simply storing the scaled quantization table in zigzag order.
Performance is unchanged.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2017-02-21 00:40:20 +01:00

compat

compat/atomics: rename header guards

2016-12-02 20:08:54 -03:00

doc

doc: correct order of options for channelmap filter

2017-02-16 13:34:14 -09:00

libavcodec

speedhq: fix decoding artifacts

2017-02-21 00:40:20 +01:00

libavdevice

avdevice/iec61883: free packet on buffer allocation error

2017-02-19 16:41:43 +01:00

libavfilter

avfilter/af_atempo: fix drift calculation, ticket #6157

2017-02-20 10:51:28 +08:00

libavformat

lavf/mov.c: Correct keyframe search in edit list to return the very first keyframe/frame with matching timestamp. Fixes ticket#5904

2017-02-20 17:15:36 +01:00

libavresample

Bump minor versions after 3.2 branchpoint to seperate release

2016-10-26 20:52:42 +02:00

libavutil

Factor CHECKED out of DEBUG so it can be set seperatly

2017-02-19 15:39:36 +01:00

libpostproc

Bump minor versions after 3.2 branchpoint to seperate release

2016-10-26 20:52:42 +02:00

libswresample

swr/aarch64: add missing ret to ff_resample_common_apply_filter_x8_float_neon

2017-02-16 11:52:32 +01:00

libswscale

swscale: add P016 input support

2017-02-01 14:29:11 -08:00

presets

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tests

fate/source: Check for cases that could use av_clip_uintp2() and av_clip_intp2()

2017-02-21 00:40:20 +01:00

tools

tools/target_dec_fuzzer: Only audio uses the return value to decode packets in pieces, correct the code to match that

2017-01-31 23:43:41 +01:00

.gitattributes

fate: add SCC test

2017-01-27 17:06:42 +01:00

.gitignore

Merge commit '6641819feedb086ebba3d2be89b8d33980f367e1'

2016-06-26 15:43:05 +02:00

.travis.yml

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arch.mak

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Changelog

Changelog: add entry for the native Opus encoder

2017-02-16 16:28:10 +00:00

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

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

common.mak

Merge commit 'c5fd4b50610f62cbb3baa4f4108139363128dea1'

2016-06-27 19:39:46 +02:00

configure

configure: add missing mdct15 dependency

2017-02-16 01:17:06 -03:00

CONTRIBUTING.md

Add CONTRIBUTING.md

2016-09-18 10:02:13 +01:00

COPYING.GPLv2

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COPYING.GPLv3

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COPYING.LGPLv2.1

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COPYING.LGPLv3

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CREDITS

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ffmpeg_cuvid.c

ffmpeg_cuvid: add 420 10-bit transcode support for hwaccel cuvid

2017-02-01 14:55:39 +01:00

ffmpeg_dxva2.c

Merge commit '18c506e9e6e8df8b1d496d093077b8240ea68c28'

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.c: Add output file index and stream index to vstats file.

2017-01-27 22:16:37 +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: Always set hwaccel_ctx, so it gets properly cleaned up on error

2017-02-05 15:13:15 +00:00

ffmpeg_vdpau.c

Merge commit 'f72db3f2f3a8c83a4f5dede8fa03434b2bf676c6'

2016-06-26 15:29:39 +02:00

ffmpeg_videotoolbox.c

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ffmpeg.c

ffmpeg: Remove redundant null check

2017-02-06 01:01:33 +01:00

ffmpeg.h

ffmpeg_opt.c: Introduce a -vstats_version option and document the existing -vstats format.

2017-01-25 22:03:10 +01:00

ffplay.c

ffplay: change keyboard volume control to logarithmic

2017-02-08 22:36:42 +01:00

ffprobe.c

lavc: Add spherical packet side data API

2016-12-07 14:40:06 -05:00

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

ffserver.c

ffserver: local OOB write with custom program name

2017-01-08 03:50:56 +01:00

INSTALL.md

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library.mak

Merge commit 'c5fd4b50610f62cbb3baa4f4108139363128dea1'

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

MAINTAINERS: add myself as mdct/opus maintainer

2017-02-14 06:15:36 +00:00

Makefile

Merge commit '6641819feedb086ebba3d2be89b8d33980f367e1'

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

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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.

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Assembly 7.7%

Makefile 1.3%

C++ 0.2%

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