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Add a ALfilterState method to process multiple samples at once

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This commit is contained in:
Chris Robinson 2014-05-18 05:02:34 -07:00
parent cd53a4b74c
commit a5631e05cc
4 changed files with 26 additions and 9 deletions
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20
Alc/mixer.c
View File

@ -96,20 +96,22 @@ static void DoFilters(ALfilterState *lpfilter, ALfilterState *hpfilter,
break;
case AF_LowPass:
for(i = 0;i < numsamples;i++)
dst[i] = ALfilterState_processSingle(lpfilter, src[i]);
ALfilterState_process(lpfilter, dst, src, numsamples);
break;
case AF_HighPass:
for(i = 0;i < numsamples;i++)
dst[i] = ALfilterState_processSingle(hpfilter, src[i]);
ALfilterState_process(hpfilter, dst, src, numsamples);
break;
case AF_BandPass:
for(i = 0;i < numsamples;i++)
dst[i] = ALfilterState_processSingle(hpfilter,
ALfilterState_processSingle(lpfilter, src[i])
);
for(i = 0;i < numsamples;)
{
ALfloat temp[64];
ALuint todo = minu(64, numsamples-i);
ALfilterState_process(lpfilter, temp, src, todo);
ALfilterState_process(hpfilter, dst, temp, todo);
i += todo;
}
break;
}
}

8
Alc/mixer_c.c
View File

@ -46,6 +46,14 @@ DECL_TEMPLATE(cubic32)
#undef DECL_TEMPLATE
void ALfilterState_processC(ALfilterState *filter, ALfloat *restrict dst, const ALfloat *src, ALuint numsamples)
{
ALuint i;
for(i = 0;i < numsamples;i++)
*(dst++) = ALfilterState_processSingle(filter, *(src++));
}
static inline void ApplyCoeffsStep(ALuint Offset, ALfloat (*restrict Values)[2],
const ALuint IrSize,
ALfloat (*restrict Coeffs)[2],

5
OpenAL32/Include/alFilter.h
View File

@ -36,7 +36,10 @@ typedef struct ALfilterState {
ALfloat y[2]; /* History of two last output samples */
ALfloat a[3]; /* Transfer function coefficients "a" */
ALfloat b[3]; /* Transfer function coefficients "b" */
void (*process)(struct ALfilterState *self, ALfloat *restrict dst, const ALfloat *src, ALuint numsamples);
} ALfilterState;
#define ALfilterState_process(a, ...) ((a)->process((a), __VA_ARGS__))
void ALfilterState_clear(ALfilterState *filter);
void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat gain, ALfloat freq_mult, ALfloat bandwidth);
@ -58,6 +61,8 @@ inline ALfloat ALfilterState_processSingle(ALfilterState *filter, ALfloat sample
return outsmp;
}
void ALfilterState_processC(ALfilterState *filter, ALfloat *restrict dst, const ALfloat *src, ALuint numsamples);
typedef struct ALfilter {
// Filter type (AL_FILTER_NULL, ...)

2
OpenAL32/alFilter.c
View File

@ -412,6 +412,8 @@ void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat g
filter->a[2] /= filter->a[0];
filter->a[1] /= filter->a[0];
filter->a[0] /= filter->a[0];
filter->process = ALfilterState_processC;
}