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#ifndef ALC_HRTF_H
#define ALC_HRTF_H
#include "AL/al.h"
#include "AL/alc.h"
#include "alstring.h"
enum DevFmtChannels;
struct Hrtf;
typedef struct HrtfEntry {
al_string name;
al_string filename;
} HrtfEntry;
TYPEDEF_VECTOR(HrtfEntry, vector_HrtfEntry)
#define HRIR_BITS (7)
#define HRIR_LENGTH (1<<HRIR_BITS)
#define HRIR_MASK (HRIR_LENGTH-1)
#define HRTFDELAY_BITS (20)
#define HRTFDELAY_FRACONE (1<<HRTFDELAY_BITS)
#define HRTFDELAY_MASK (HRTFDELAY_FRACONE-1)
vector_HrtfEntry EnumerateHrtf(const_al_string devname);
void FreeHrtfList(vector_HrtfEntry *list);
const struct Hrtf *GetHrtf(const_al_string devname, enum DevFmtChannels chans, ALCuint srate);
ALCboolean FindHrtfFormat(const_al_string devname, enum DevFmtChannels *chans, ALCuint *srate);
void FreeHrtfs(void);
ALuint GetHrtfIrSize(const struct Hrtf *Hrtf);
void GetLerpedHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat dirfact, ALfloat gain, ALfloat (*coeffs)[2], ALuint *delays);
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);
void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, const ALuint num_chans, ALfloat (**coeffs_list)[2], ALuint **delay_list);
#endif /* ALC_HRTF_H */
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