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Simplify some imaadpcm macros 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27150 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2008-06-29 08:42:53 +00:00
parent 5e97c2f960
commit 6767061f8b
1 changed files with 3 additions and 4 deletions
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7
libmpcodecs/ad_imaadpcm.c
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@ -58,14 +58,13 @@ static const int8_t adpcm_index[16] =
// useful macros
// clamp a number between 0 and 88
#define CLAMP_0_TO_88(x) if (x < 0) x = 0; else if (x > 88) x = 88;
#define CLAMP_0_TO_88(x) x = av_clip(x, 0, 88);
// clamp a number within a signed 16-bit range
#define CLAMP_S16(x) if (x < -32768) x = -32768; \
else if (x > 32767) x = 32767;
#define CLAMP_S16(x) x = av_clip_int16(x);
// clamp a number above 16
#define CLAMP_ABOVE_16(x) if (x < 16) x = 16;
// sign extend a 16-bit value
#define SE_16BIT(x) if (x & 0x8000) x -= 0x10000;
#define SE_16BIT(x) x = (int16_t)x;
// sign extend a 4-bit value
#define SE_4BIT(x) if (x & 0x8) x -= 0x10;