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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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