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Half size for adpcm_index 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27153 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2008-06-29 09:14:26 +00:00
parent 9f941c8a00
commit c2af943b84
1 changed files with 3 additions and 4 deletions
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7
libmpcodecs/ad_imaadpcm.c
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@ -50,10 +50,9 @@ static const int16_t adpcm_step[89] =
15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
};
static const int8_t adpcm_index[16] =
static const int8_t adpcm_index[8] =
{
-1, -1, -1, -1, 2, 4, 6, 8,
-1, -1, -1, -1, 2, 4, 6, 8
};
// useful macros
@ -144,12 +143,12 @@ static void decode_nibbles(unsigned short *output,
for (i = 0; i < output_size; i++)
{
delta = output[i];
sign = delta & 8;
delta = delta & 7;
index[channel_number] += adpcm_index[delta];
CLAMP_0_TO_88(index[channel_number]);
sign = delta & 8;
delta = delta & 7;
delta = 2 * delta + 1;
if (sign) delta = -delta;