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Copy samples if needed in the 'copy' resampler

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Chris Robinson 2014-05-21 15:24:40 -07:00
parent dd2e6b7902
commit 4b433c900e
1 changed files with 15 additions and 9 deletions
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24
Alc/mixer_c.c
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@ -15,27 +15,33 @@ static inline ALfloat lerp32(const ALfloat *vals, ALuint frac)
static inline ALfloat cubic32(const ALfloat *vals, ALuint frac)
{ return cubic(vals[-1], vals[0], vals[1], vals[2], frac * (1.0f/FRACTIONONE)); }
const ALfloat *Resample_copy32_C(const ALfloat *data, ALuint UNUSED(frac),
ALuint increment, ALfloat *restrict UNUSED(OutBuffer), ALuint UNUSED(BufferSize))
const ALfloat *Resample_copy32_C(const ALfloat *src, ALuint UNUSED(frac),
ALuint increment, ALfloat *restrict dst, ALuint numsamples)
{
assert(increment==FRACTIONONE);
return data;
#if defined(HAVE_SSE) || defined(HAVE_NEON)
/* Avoid copying the source data if it's aligned like the destination. */
if((((intptr_t)src)&15) == (((intptr_t)dst)&15))
return src;
#endif
memcpy(dst, src, numsamples*sizeof(ALfloat));
return dst;
}
#define DECL_TEMPLATE(Sampler) \
const ALfloat *Resample_##Sampler##_C(const ALfloat *data, ALuint frac, \
ALuint increment, ALfloat *restrict OutBuffer, ALuint BufferSize) \
const ALfloat *Resample_##Sampler##_C(const ALfloat *src, ALuint frac, \
ALuint increment, ALfloat *restrict dst, ALuint numsamples) \
{ \
ALuint i; \
for(i = 0;i < BufferSize;i++) \
for(i = 0;i < numsamples;i++) \
{ \
OutBuffer[i] = Sampler(data, frac); \
dst[i] = Sampler(src, frac); \
\
frac += increment; \
data += frac>>FRACTIONBITS; \
src += frac>>FRACTIONBITS; \
frac &= FRACTIONMASK; \
} \
return OutBuffer; \
return dst; \
}
DECL_TEMPLATE(point32)