OpenAL32/Include/alFilter.h

   1 #ifndef _AL_FILTER_H_
   2 #define _AL_FILTER_H_
   3
   4 #include "AL/al.h"
   5 #include "alu.h"
   6
   7 #ifdef __cplusplus
   8 extern "C" {
   9 #endif
  10
  11 typedef struct {
  12     ALfloat coeff;
  13     ALfloat history[0];
  14 } FILTER;
  15
  16 #define AL_FILTER_TYPE                                     0x8001
  17
  18 #define AL_FILTER_NULL                                     0x0000
  19 #define AL_FILTER_LOWPASS                                  0x0001
  20 #define AL_FILTER_HIGHPASS                                 0x0002
  21 #define AL_FILTER_BANDPASS                                 0x0003
  22
  23 #define AL_LOWPASS_GAIN                                    0x0001
  24 #define AL_LOWPASS_GAINHF                                  0x0002
  25
  26
  27 typedef struct ALfilter_struct
  28 {
  29     // Filter type (AL_FILTER_NULL, ...)
  30     ALenum type;
  31
  32     ALfloat Gain;
  33     ALfloat GainHF;
  34
  35     // Index to itself
  36     ALuint filter;
  37
  38     struct ALfilter_struct *next;
  39 } ALfilter;
  40
  41 ALvoid AL_APIENTRY alGenFilters(ALsizei n, ALuint *filters);
  42 ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, ALuint *filters);
  43 ALboolean AL_APIENTRY alIsFilter(ALuint filter);
  44
  45 ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint iValue);
  46 ALvoid AL_APIENTRY alFilteriv(ALuint filter, ALenum param, ALint *piValues);
  47 ALvoid AL_APIENTRY alFilterf(ALuint filter, ALenum param, ALfloat flValue);
  48 ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, ALfloat *pflValues);
  49
  50 ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *piValue);
  51 ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *piValues);
  52 ALvoid AL_APIENTRY alGetFilterf(ALuint filter, ALenum param, ALfloat *pflValue);
  53 ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *pflValues);
  54
  55 ALvoid ReleaseALFilters(ALvoid);
  56
  57 #ifdef __cplusplus
  58 }
  59 #endif
  60
  61 #endif