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Merge commit '76a75c523cd3c63560185394a0a5cd7249db962a'

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* commit '76a75c523cd3c63560185394a0a5cd7249db962a':
  lavr: mix front center channel as indicated in the ATSC A/52 specification.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-02-08 18:20:16 +01:00
commit b08f554fdc
1 changed files with 7 additions and 2 deletions
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9
libavresample/audio_mix_matrix.c
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@ -126,8 +126,13 @@ int avresample_build_matrix(uint64_t in_layout, uint64_t out_layout,
/* mix front center to front left/right */
if (unaccounted & AV_CH_FRONT_CENTER) {
if ((out_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO) {
matrix[FRONT_LEFT ][FRONT_CENTER] += M_SQRT1_2;
matrix[FRONT_RIGHT][FRONT_CENTER] += M_SQRT1_2;
if ((in_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO) {
matrix[FRONT_LEFT ][FRONT_CENTER] += center_mix_level;
matrix[FRONT_RIGHT][FRONT_CENTER] += center_mix_level;
} else {
matrix[FRONT_LEFT ][FRONT_CENTER] += M_SQRT1_2;
matrix[FRONT_RIGHT][FRONT_CENTER] += M_SQRT1_2;
}
} else
return AVERROR_PATCHWELCOME;
}