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https://github.com/mpv-player/mpv
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Scale msadpcm coefficients to fit into 8 bits
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27258 b3059339-0415-0410-9bf9-f77b7e298cf2
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@ -34,14 +34,14 @@ static const int ms_adapt_table[] =
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768, 614, 512, 409, 307, 230, 230, 230
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};
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static const int ms_adapt_coeff1[] =
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static const int8_t ms_adapt_coeff1[] =
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{
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256, 512, 0, 192, 240, 460, 392
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64, 128, 0, 48, 60, 115, 98
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};
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static const int ms_adapt_coeff2[] =
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static const int8_t ms_adapt_coeff2[] =
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{
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0, -256, 0, 64, 0, -208, -232
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0, -64, 0, 16, 0, -52, -58
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};
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#define MS_ADPCM_PREAMBLE_SIZE 6
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@ -173,7 +173,7 @@ static int ms_adpcm_decode_block(unsigned short *output, unsigned char *input,
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predictor = (
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((sample1[current_channel] * coeff1[current_channel]) +
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(sample2[current_channel] * coeff2[current_channel])) / 256) +
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(sample2[current_channel] * coeff2[current_channel])) / 64) +
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(snibble * idelta[current_channel]);
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CLAMP_S16(predictor);
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sample2[current_channel] = sample1[current_channel];
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