On2 VP7 decoder

Further performance improvements and security fixes by
Vittorio Giovara, Luca Barbato and Diego Biurrun.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
fate: add a VP7 test
log: allow color highlighting in Cygwin's mintty

Configure will detect the availability of the Windows' console functions and set
HAVE_SETCONSOLETEXTATTRIBUTE.  Meaning av_log will use those functions to
control colours.  When ffmpeg is run in Cygwin's mintty terminal emulator it
will not use colour highlighting in this case.

Mintty responds to the usual escape code colours (it even supports 256 colours).
Windows' cmd.exe does not.  Fortunately it seems that Cygwin's emulation layer
now translates the basic 16 colours into Windows' Console command functions.

That means that we can have av_log use the standard colour commands and let
ffmpeg print colours in both mintty and cmd.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
arm: asm decode_block_coeffs_internal is vp8 specific

Unbreaks compilation on arm due to conflicting types for
'ff_decode_block_coeffs_armv6'.
Merge commit 'ac4b32df71bd932838043a4838b86d11e169707f'

* commit 'ac4b32df71bd932838043a4838b86d11e169707f':
  On2 VP7 decoder

Conflicts:
	Changelog
	libavcodec/arm/h264pred_init_arm.c
	libavcodec/arm/vp8dsp.h
	libavcodec/arm/vp8dsp_init_arm.c
	libavcodec/arm/vp8dsp_init_armv6.c
	libavcodec/arm/vp8dsp_init_neon.c
	libavcodec/avcodec.h
	libavcodec/h264pred.c
	libavcodec/version.h
	libavcodec/vp8.c
	libavcodec/vp8.h
	libavcodec/vp8data.h
	libavcodec/vp8dsp.c
	libavcodec/vp8dsp.h
	libavcodec/x86/h264_intrapred_init.c
	libavcodec/x86/vp8dsp_init.c

See: 89f2f5dbd7a23e7ec1073d3c08d46093a01a4135 and others
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '287432430c5c9cb8ffe1da1376949de494f24e45'

* commit '287432430c5c9cb8ffe1da1376949de494f24e45':
  fate: add a VP7 test

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  arm: asm decode_block_coeffs_internal is vp8 specific

See: 89f2f5dbd7a23e7ec1073d3c08d46093a01a4135
Merged-by: Michael Niedermayer <michaelni@gmx.at>
oggenc: check return value of av_mallocz()

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
replaygain: fix gain sign decoding

The gain sign was incorrectly decoded: since the FFSIGN() macro treats 0 as
negative, gain values starting with "0." were always decoded as negative.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
avformat/wtvdec: ignore MPEG2VIDEO extradata when count is invalid

Fixes ticket #3522.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/wtvdec: populate codec_tag from BITMAPINFOHEADER

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
replaygain: correctly parse peak values

According to the ReplayGain spec, the peak amplitude may overflow and may result
in peak amplitude values greater than 1.0 with psychoacoustically coded audio,
such as MP3. Fully compliant decoders must allow peak overflows.

Additionally, having peak values in the 0<->UINT32_MAX scale makes it more
difficult for applications to actually use the peak values (e.g. when
implementing clipping prevention) since values have to be rescaled down.

This patch corrects the peak parsing by removing the rescaling of the decoded
values between 0 and UINT32_MAX and the 1.0 upper limit.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
x86/synth_filter: add synth_filter_sse

Build only on x86_32 targets.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
x86/synth_filter: add synth_filter_avx

Sandy Bridge Win64:
180 cycles in ff_synth_filter_inner_sse2
150 cycles in ff_synth_filter_inner_avx

Also switch some instructions to a three operand format to avoid
assembly errors with Yasm 1.1.0 or older.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
flacdec: export replaygain tags from Vorbis comments

Signed-off-by: Anton Khirnov <anton@khirnov.net>
oggparsevorbis: export replaygain tags from Vorbis comments

Signed-off-by: Anton Khirnov <anton@khirnov.net>
replaygain: remove unused variable

Signed-off-by: Anton Khirnov <anton@khirnov.net>
x86/synth_filter: add synth_filter_fma3

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
avcodec.h, avpacket.c: use const AVPacket pointers in copy functions

Signed-off-by: Roman Fietze <roman.fietze@telemotive.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
af_volume: implement replaygain pre-amplification

This adds a new "replaygain_preamp" option to the filter, and simply adds its
value to the replaygain gain value.

Signed-off-by: Anton Khirnov <anton@khirnov.net>