Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Spotted-by: ubitux

Also add notice about ffmpeg -override_ffserver option.

Also make it accept the more consistent behavior (boolean option set to
true when specified).

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  dcadec: add disable_xch private option.

Conflicts:
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '220494ad0b2e9e980ef703b46b69308236f29be5':
  dcadec: treat all 2-channel modes as Stereo in dca_downmix.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'aaa44d0299338e3bc90128816c21dbfab06cdb48':
  dca: support mixing LFE in dca_downmix.

Conflicts:
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '149438cfe5d233c46bb18341b7c574fe643dd5f2':
  dca: improve default stereo downmix coefficients.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '44b17d794aa508ae21f438ae80bfe8aaf4b426e1':
  dca: extract core substream's embedded downmix coeffcient codes, if present.

Conflicts:
	libavcodec/dcadata.h
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '27245b4e1bbb7a863341db321b5bdc5792e427d9':
  dca: remove embedded downmix coefficient extraction.

Conflicts:
	libavcodec/dcadata.h
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b6d5e6aa10a2f09351f287e876f7ed4504e1f75d':
  dca: convert dca_default_coeffs to float.

Conflicts:
	libavcodec/dcadata.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '25609b63d2e07d26d610f485a22082d32c96c0f5':
  dcadec: store the stereo downmix coefficients as float in the DCAContext.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '89de5157b1cbe7807d3ec1d51bd56a75e98c002e':
  dcadec: implement request_channel_layout.

Conflicts:
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

It has no effect, and it was never documented.

In particular, abort immediately in case of memory error, avoid potential
crashes.

* commit 'cf7860db608df7c76471d8b61f07abbd5aad8dd5':
  x86: dsputil: Suppress deprecation warnings for XvMC bits

Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd1916d13e28b87f4b1b214231149e12e1d536b4b':
  dsputil/pngdsp: fix signed/unsigned type in end comparison

Conflicts:
	libavcodec/dsputil.c

See: 454a11a1c9
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This supplements the deprecated request_channels-based control of XCh decoding.

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

The check for (prim_channels > 2) before calling dca_downmix made these
cases unreachable, but now 2.1 layouts will go through the downmix code.
Having dual mono, Lt/Rt and sum-difference layouts print errors when
regular Stereo doesn't seems pointless.

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

Embedded downmix coefficients can use this.

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

Previous coefficients were producing a non-normalized, incorrect Lt/Rt downmix.

The new coefficients produce a standard Lo/Ro downmix with 3dB attenuation.

This should match the typical default coefficients used by DTS encoders.

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

As per ETSI TS 102 114 V1.4.1 specification.

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

It was based on an old, seemingly incorrect specification, so default
coefficients were always used anyway.

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Easier to read, modify, and avoids relying on an outdated table.

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

The 7-bit codes previously used are absent from the ETSI 102 114 V1.4.1 spec.

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

This prevents breaking (non asm) striping in that case

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This more closely matches the actual use, also we use plain
strip without these flags for striping

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>