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 enum DevFmtChannels;
   8
   9 struct Hrtf;
  10
  11 #define HRIR_BITS        (7)
  12 #define HRIR_LENGTH      (1<<HRIR_BITS)
  13 #define HRIR_MASK        (HRIR_LENGTH-1)
  14 #define HRTFDELAY_BITS    (20)
  15 #define HRTFDELAY_FRACONE (1<<HRTFDELAY_BITS)
  16 #define HRTFDELAY_MASK    (HRTFDELAY_FRACONE-1)
  17
  18 const struct Hrtf *GetHrtf(enum DevFmtChannels chans, ALCuint srate);
  19 ALCboolean FindHrtfFormat(enum DevFmtChannels *chans, ALCuint *srate);
  20
  21 void FreeHrtfs(void);
  22
  23 ALuint GetHrtfIrSize(const struct Hrtf *Hrtf);
  24 ALfloat CalcHrtfDelta(ALfloat oldGain, ALfloat newGain, const ALfloat olddir[3], const ALfloat newdir[3]);
  25 void GetLerpedHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat gain, ALfloat (*coeffs)[2], ALuint *delays);
  26 ALuint GetMovingHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat gain, ALfloat delta, ALint counter, ALfloat (*coeffs)[2], ALuint *delays, ALfloat (*coeffStep)[2], ALint *delayStep);
  27
  28 #endif /* ALC_HRTF_H */