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- #ifndef _AL_FILTER_H_
- #define _AL_FILTER_H_
-
- #include "AL/alc.h"
- #include "AL/al.h"
-
-
- #define LOWPASSFREQREF (5000.0f)
- #define HIGHPASSFREQREF (250.0f)
-
-
- struct ALfilter;
-
- struct ALfilterVtable {
- void (*const setParami)(ALfilter *filter, ALCcontext *context, ALenum param, ALint val);
- void (*const setParamiv)(ALfilter *filter, ALCcontext *context, ALenum param, const ALint *vals);
- void (*const setParamf)(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val);
- void (*const setParamfv)(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals);
-
- void (*const getParami)(ALfilter *filter, ALCcontext *context, ALenum param, ALint *val);
- void (*const getParamiv)(ALfilter *filter, ALCcontext *context, ALenum param, ALint *vals);
- void (*const getParamf)(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val);
- void (*const getParamfv)(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals);
- };
-
- #define DEFINE_ALFILTER_VTABLE(T) \
- const ALfilterVtable T##_vtable = { \
- T##_setParami, T##_setParamiv, T##_setParamf, T##_setParamfv, \
- T##_getParami, T##_getParamiv, T##_getParamf, T##_getParamfv, \
- }
-
- struct ALfilter {
- // Filter type (AL_FILTER_NULL, ...)
- ALenum type;
-
- ALfloat Gain;
- ALfloat GainHF;
- ALfloat HFReference;
- ALfloat GainLF;
- ALfloat LFReference;
-
- const ALfilterVtable *vtab;
-
- /* Self ID */
- ALuint id;
- };
- #define ALfilter_setParami(o, c, p, v) ((o)->vtab->setParami(o, c, p, v))
- #define ALfilter_setParamf(o, c, p, v) ((o)->vtab->setParamf(o, c, p, v))
- #define ALfilter_setParamiv(o, c, p, v) ((o)->vtab->setParamiv(o, c, p, v))
- #define ALfilter_setParamfv(o, c, p, v) ((o)->vtab->setParamfv(o, c, p, v))
- #define ALfilter_getParami(o, c, p, v) ((o)->vtab->getParami(o, c, p, v))
- #define ALfilter_getParamf(o, c, p, v) ((o)->vtab->getParamf(o, c, p, v))
- #define ALfilter_getParamiv(o, c, p, v) ((o)->vtab->getParamiv(o, c, p, v))
- #define ALfilter_getParamfv(o, c, p, v) ((o)->vtab->getParamfv(o, c, p, v))
-
- #endif
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