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some (untested!) support for backends which require unsigned audio samples

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svn-id: r10183
This commit is contained in:
Max Horn 2003-09-11 22:57:06 +00:00
parent 538812d9fc
commit 9e88df9e16
1 changed files with 10 additions and 1 deletions
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11
sound/rate.h
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@ -42,14 +42,23 @@ typedef uint32 st_rate_t;
#define ST_SUCCESS (0) #define ST_SUCCESS (0)
static inline void clampedAdd(int16& a, int b) { static inline void clampedAdd(int16& a, int b) {
register int val = a + b; register int val;
#ifdef OUTPUT_UNSIGNED_AUDIO
val = (a ^ 0x8000) + b;
#else
val = a + b;
#endif
if (val > ST_SAMPLE_MAX) if (val > ST_SAMPLE_MAX)
val = ST_SAMPLE_MAX; val = ST_SAMPLE_MAX;
else if (val < ST_SAMPLE_MIN) else if (val < ST_SAMPLE_MIN)
val = ST_SAMPLE_MIN; val = ST_SAMPLE_MIN;
#ifdef OUTPUT_UNSIGNED_AUDIO
a = ((int16)val) ^ 0x8000;
#else
a = val; a = val;
#endif
} }
// Q&D hack to get this SOX stuff to work // Q&D hack to get this SOX stuff to work