1 #ifndef AL_FILTER_H
2 #define AL_FILTER_H
3 
4 #include "AL/al.h"
5 #include "AL/alc.h"
6 #include "AL/alext.h"
7 
8 #include "almalloc.h"
9 
10 
11 #define LOWPASSFREQREF  5000.0f
12 #define HIGHPASSFREQREF  250.0f
13 
14 
15 struct ALfilter {
16     ALenum type{AL_FILTER_NULL};
17 
18     float Gain{1.0f};
19     float GainHF{1.0f};
20     float HFReference{LOWPASSFREQREF};
21     float GainLF{1.0f};
22     float LFReference{HIGHPASSFREQREF};
23 
24     struct Vtable {
25         void (*const setParami )(ALfilter *filter, ALenum param, int val);
26         void (*const setParamiv)(ALfilter *filter, ALenum param, const int *vals);
27         void (*const setParamf )(ALfilter *filter, ALenum param, float val);
28         void (*const setParamfv)(ALfilter *filter, ALenum param, const float *vals);
29 
30         void (*const getParami )(const ALfilter *filter, ALenum param, int *val);
31         void (*const getParamiv)(const ALfilter *filter, ALenum param, int *vals);
32         void (*const getParamf )(const ALfilter *filter, ALenum param, float *val);
33         void (*const getParamfv)(const ALfilter *filter, ALenum param, float *vals);
34     };
35     const Vtable *vtab{nullptr};
36 
37     /* Self ID */
38     ALuint id{0};
39 
setParamiALfilter40     void setParami(ALenum param, int value) { vtab->setParami(this, param, value); }
setParamivALfilter41     void setParamiv(ALenum param, const int *values) { vtab->setParamiv(this, param, values); }
setParamfALfilter42     void setParamf(ALenum param, float value) { vtab->setParamf(this, param, value); }
setParamfvALfilter43     void setParamfv(ALenum param, const float *values) { vtab->setParamfv(this, param, values); }
getParamiALfilter44     void getParami(ALenum param, int *value) const { vtab->getParami(this, param, value); }
getParamivALfilter45     void getParamiv(ALenum param, int *values) const { vtab->getParamiv(this, param, values); }
getParamfALfilter46     void getParamf(ALenum param, float *value) const { vtab->getParamf(this, param, value); }
getParamfvALfilter47     void getParamfv(ALenum param, float *values) const { vtab->getParamfv(this, param, values); }
48 
49     DISABLE_ALLOC()
50 };
51 
52 #endif
53