62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
#ifndef _AL_FILTER_H_
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#define _AL_FILTER_H_
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#include "AL/al.h"
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#include "alu.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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ALfloat history[OUTPUTCHANNELS*2];
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ALfloat coeff;
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} FILTER;
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#define AL_FILTER_TYPE 0x8001
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#define AL_FILTER_NULL 0x0000
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#define AL_FILTER_LOWPASS 0x0001
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#define AL_FILTER_HIGHPASS 0x0002
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#define AL_FILTER_BANDPASS 0x0003
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#define AL_LOWPASS_GAIN 0x0001
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#define AL_LOWPASS_GAINHF 0x0002
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typedef struct ALfilter_struct
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{
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// Filter type (AL_FILTER_NULL, ...)
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ALenum type;
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ALfloat Gain;
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ALfloat GainHF;
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// Index to itself
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ALuint filter;
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struct ALfilter_struct *next;
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} ALfilter;
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ALvoid AL_APIENTRY alGenFilters(ALsizei n, ALuint *filters);
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ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, ALuint *filters);
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ALboolean AL_APIENTRY alIsFilter(ALuint filter);
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ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint iValue);
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ALvoid AL_APIENTRY alFilteriv(ALuint filter, ALenum param, ALint *piValues);
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ALvoid AL_APIENTRY alFilterf(ALuint filter, ALenum param, ALfloat flValue);
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ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, ALfloat *pflValues);
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ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *piValue);
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ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *piValues);
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ALvoid AL_APIENTRY alGetFilterf(ALuint filter, ALenum param, ALfloat *pflValue);
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ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *pflValues);
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ALvoid ReleaseALFilters(ALvoid);
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#ifdef __cplusplus
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}
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#endif
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#endif
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