Alc/hrtf.h

   1 #ifndef ALC_HRTF_H
   2 #define ALC_HRTF_H
   3
   4 #include "AL/al.h"
   5 #include "AL/alc.h"
   6
   7 #include "alstring.h"
   8
   9 enum DevFmtChannels;
  10
  11 struct Hrtf;
  12
  13 typedef struct HrtfEntry {
  14     al_string name;
  15     al_string filename;
  16
  17     const struct Hrtf *hrtf;
  18 } HrtfEntry;
  19 TYPEDEF_VECTOR(HrtfEntry, vector_HrtfEntry)
  20
  21 #define HRIR_BITS        (7)
  22 #define HRIR_LENGTH      (1<<HRIR_BITS)
  23 #define HRIR_MASK        (HRIR_LENGTH-1)
  24 #define HRTFDELAY_BITS    (20)
  25 #define HRTFDELAY_FRACONE (1<<HRTFDELAY_BITS)
  26 #define HRTFDELAY_MASK    (HRTFDELAY_FRACONE-1)
  27
  28 void FreeHrtfs(void);
  29
  30 vector_HrtfEntry EnumerateHrtf(const_al_string devname);
  31 void FreeHrtfList(vector_HrtfEntry *list);
  32
  33 ALuint GetHrtfSampleRate(const struct Hrtf *Hrtf);
  34 ALuint GetHrtfIrSize(const struct Hrtf *Hrtf);
  35
  36 void GetLerpedHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat dirfact, ALfloat gain, ALfloat (*coeffs)[2], ALuint *delays);
  37 ALuint GetMovingHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat dirfact, ALfloat gain, ALfloat delta, ALint counter, ALfloat (*coeffs)[2], ALuint *delays, ALfloat (*coeffStep)[2], ALint *delayStep);
  38 void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat (*coeffs_list[4])[2], ALuint *delay_list[4]);
  39
  40 #endif /* ALC_HRTF_H */