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author | reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2008-06-29 09:14:26 +0000 |
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committer | reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2008-06-29 09:14:26 +0000 |
commit | c2af943b84b9ef2b32d66a3207c1055fdb7b6d4e (patch) | |
tree | 3f47d2c5bd4ff37602e9955a0dcdc9b0b89a4dbd /libmpcodecs | |
parent | 9f941c8a00541ffe418f95267438ccb5458db173 (diff) | |
download | mpv-c2af943b84b9ef2b32d66a3207c1055fdb7b6d4e.tar.bz2 mpv-c2af943b84b9ef2b32d66a3207c1055fdb7b6d4e.tar.xz |
Half size for adpcm_index
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27153 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpcodecs')
-rw-r--r-- | libmpcodecs/ad_imaadpcm.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/libmpcodecs/ad_imaadpcm.c b/libmpcodecs/ad_imaadpcm.c index 7a8e89dc41..15340ab0d5 100644 --- a/libmpcodecs/ad_imaadpcm.c +++ b/libmpcodecs/ad_imaadpcm.c @@ -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; |