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Uninline lpCoeffCalc

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This commit is contained in:
Chris Robinson 2011-05-18 18:42:25 -07:00
parent c316766144
commit 194f8fc791
2 changed files with 15 additions and 13 deletions
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14
OpenAL32/Include/alFilter.h
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@ -101,19 +101,7 @@ static __inline ALfloat lpFilter1PC(FILTER *iir, ALuint offset, ALfloat input)
/* Calculates the low-pass filter coefficient given the pre-scaled gain and
* cos(w) value. Note that g should be pre-scaled (sqr(gain) for one-pole,
* sqrt(gain) for four-pole, etc) */
static __inline ALfloat lpCoeffCalc(ALfloat g, ALfloat cw)
{
ALfloat a = 0.0f;
/* Be careful with gains < 0.01, as that causes the coefficient
* head towards 1, which will flatten the signal */
g = __max(g, 0.01f);
if(g < 0.9999f) /* 1-epsilon */
a = (1 - g*cw - aluSqrt(2*g*(1-cw) - g*g*(1 - cw*cw))) /
(1 - g);
return a;
}
ALfloat lpCoeffCalc(ALfloat g, ALfloat cw);
typedef struct ALfilter

14
OpenAL32/alFilter.c
View File

@ -406,6 +406,20 @@ AL_API ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *pf
}
ALfloat lpCoeffCalc(ALfloat g, ALfloat cw)
{
ALfloat a = 0.0f;
/* Be careful with gains < 0.01, as that causes the coefficient
* head towards 1, which will flatten the signal */
g = __max(g, 0.01f);
if(g < 0.9999f) /* 1-epsilon */
a = (1 - g*cw - aluSqrt(2*g*(1-cw) - g*g*(1 - cw*cw))) /
(1 - g);
return a;
}
ALvoid ReleaseALFilters(ALCdevice *device)
{
ALsizei i;