OpenAL32/Include/alFilter.h

   1 #ifndef _AL_FILTER_H_
   2 #define _AL_FILTER_H_
   3
   4 #include "AL/alc.h"
   5 #include "AL/al.h"
   6
   7 #ifdef __cplusplus
   8 extern "C" {
   9 #endif
  10
  11 #define LOWPASSFREQREF  (5000.0f)
  12 #define HIGHPASSFREQREF  (250.0f)
  13
  14
  15 struct ALfilter;
  16
  17 typedef struct ALfilterVtable {
  18     void (*const setParami)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALint val);
  19     void (*const setParamiv)(struct ALfilter *filter, ALCcontext *context, ALenum param, const ALint *vals);
  20     void (*const setParamf)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val);
  21     void (*const setParamfv)(struct ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals);
  22
  23     void (*const getParami)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALint *val);
  24     void (*const getParamiv)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALint *vals);
  25     void (*const getParamf)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val);
  26     void (*const getParamfv)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals);
  27 } ALfilterVtable;
  28
  29 #define DEFINE_ALFILTER_VTABLE(T)           \
  30 const struct ALfilterVtable T##_vtable = {  \
  31     T##_setParami, T##_setParamiv,          \
  32     T##_setParamf, T##_setParamfv,          \
  33     T##_getParami, T##_getParamiv,          \
  34     T##_getParamf, T##_getParamfv,          \
  35 }
  36
  37 typedef struct ALfilter {
  38     // Filter type (AL_FILTER_NULL, ...)
  39     ALenum type;
  40
  41     ALfloat Gain;
  42     ALfloat GainHF;
  43     ALfloat HFReference;
  44     ALfloat GainLF;
  45     ALfloat LFReference;
  46
  47     const struct ALfilterVtable *vtab;
  48
  49     /* Self ID */
  50     ALuint id;
  51 } ALfilter;
  52 #define ALfilter_setParami(o, c, p, v)   ((o)->vtab->setParami(o, c, p, v))
  53 #define ALfilter_setParamf(o, c, p, v)   ((o)->vtab->setParamf(o, c, p, v))
  54 #define ALfilter_setParamiv(o, c, p, v)  ((o)->vtab->setParamiv(o, c, p, v))
  55 #define ALfilter_setParamfv(o, c, p, v)  ((o)->vtab->setParamfv(o, c, p, v))
  56 #define ALfilter_getParami(o, c, p, v)   ((o)->vtab->getParami(o, c, p, v))
  57 #define ALfilter_getParamf(o, c, p, v)   ((o)->vtab->getParamf(o, c, p, v))
  58 #define ALfilter_getParamiv(o, c, p, v)  ((o)->vtab->getParamiv(o, c, p, v))
  59 #define ALfilter_getParamfv(o, c, p, v)  ((o)->vtab->getParamfv(o, c, p, v))
  60
  61 void ReleaseALFilters(ALCdevice *device);
  62
  63 #ifdef __cplusplus
  64 }
  65 #endif
  66
  67 #endif