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Scale msadpcm coefficients to fit into 8 bits

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27258 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2008-07-11 18:59:03 +00:00
parent 4366cc211c
commit 68e6f22bbc
1 changed files with 5 additions and 5 deletions

10
libmpcodecs/ad_msadpcm.c
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@ -34,14 +34,14 @@ static const int ms_adapt_table[] =
768, 614, 512, 409, 307, 230, 230, 230
};
static const int ms_adapt_coeff1[] =
static const int8_t ms_adapt_coeff1[] =
{
256, 512, 0, 192, 240, 460, 392
64, 128, 0, 48, 60, 115, 98
};
static const int ms_adapt_coeff2[] =
static const int8_t ms_adapt_coeff2[] =
{
0, -256, 0, 64, 0, -208, -232
0, -64, 0, 16, 0, -52, -58
};
#define MS_ADPCM_PREAMBLE_SIZE 6
@ -173,7 +173,7 @@ static int ms_adpcm_decode_block(unsigned short *output, unsigned char *input,
predictor = (
((sample1[current_channel] * coeff1[current_channel]) +
(sample2[current_channel] * coeff2[current_channel])) / 256) +
(sample2[current_channel] * coeff2[current_channel])) / 64) +
(snibble * idelta[current_channel]);
CLAMP_S16(predictor);
sample2[current_channel] = sample1[current_channel];