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#ifndef _AL_SOURCE_H_
#define _AL_SOURCE_H_
#define MAX_SENDS 4
#include "alFilter.h"
#include "alu.h"
#include "AL/al.h"
#ifdef __cplusplus
extern "C" {
#endif
#define SRC_HISTORY_BITS (7)
#define SRC_HISTORY_LENGTH (1<<SRC_HISTORY_BITS)
#define SRC_HISTORY_MASK (SRC_HISTORY_LENGTH-1)
typedef enum {
POINT_RESAMPLER = 0,
LINEAR_RESAMPLER,
CUBIC_RESAMPLER,
RESAMPLER_MAX,
RESAMPLER_MIN = -1,
RESAMPLER_DEFAULT = LINEAR_RESAMPLER
} resampler_t;
extern resampler_t DefaultResampler;
extern const ALsizei ResamplerPadding[RESAMPLER_MAX];
extern const ALsizei ResamplerPrePadding[RESAMPLER_MAX];
typedef struct ALbufferlistitem
{
struct ALbuffer *buffer;
struct ALbufferlistitem *next;
struct ALbufferlistitem *prev;
} ALbufferlistitem;
typedef struct ALsource
{
ALfloat flPitch;
ALfloat flGain;
ALfloat flOuterGain;
ALfloat flMinGain;
ALfloat flMaxGain;
ALfloat flInnerAngle;
ALfloat flOuterAngle;
ALfloat flRefDistance;
ALfloat flMaxDistance;
ALfloat flRollOffFactor;
ALfloat vPosition[3];
ALfloat vVelocity[3];
ALfloat vOrientation[3];
ALboolean bHeadRelative;
ALboolean bLooping;
ALenum DistanceModel;
resampler_t Resampler;
ALenum state;
ALuint position;
ALuint position_fraction;
struct ALbuffer *Buffer;
ALbufferlistitem *queue; // Linked list of buffers in queue
ALuint BuffersInQueue; // Number of buffers in queue
ALuint BuffersPlayed; // Number of buffers played on this loop
ALfilter DirectFilter;
struct {
struct ALeffectslot *Slot;
ALfilter WetFilter;
} Send[MAX_SENDS];
ALboolean DryGainHFAuto;
ALboolean WetGainAuto;
ALboolean WetGainHFAuto;
ALfloat OuterGainHF;
ALfloat AirAbsorptionFactor;
ALfloat RoomRolloffFactor;
ALfloat DopplerFactor;
ALint lOffset;
ALint lOffsetType;
// Source Type (Static, Streaming, or Undetermined)
ALint lSourceType;
ALuint NumChannels;
ALuint SampleSize;
/* HRTF info */
ALfloat HrtfHistory[MAXCHANNELS][SRC_HISTORY_LENGTH][2];
ALuint HrtfOffset;
/* Current target parameters used for mixing */
struct {
ALint Step;
ALfloat HrtfCoeffs[MAXCHANNELS][HRIR_LENGTH][2];
ALuint HrtfDelay[MAXCHANNELS][2];
/* A mixing matrix. First subscript is the channel number of the input
* data (regardless of channel configuration) and the second is the
* channel target (eg. FRONT_LEFT) */
ALfloat DryGains[MAXCHANNELS][MAXCHANNELS];
FILTER iirFilter;
ALfloat history[MAXCHANNELS*2];
struct {
ALfloat WetGain;
FILTER iirFilter;
ALfloat history[MAXCHANNELS];
} Send[MAX_SENDS];
} Params;
ALboolean NeedsUpdate;
ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
ALvoid (*DoMix)(struct ALsource *self, ALCdevice *Device,
const ALvoid *RESTRICT data,
ALuint *DataPosInt, ALuint *DataPosFrac,
ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize);
ALvoid (*DoHrtfMix)(struct ALsource *self, ALCdevice *Device,
const ALvoid *RESTRICT data,
ALuint *DataPosInt, ALuint *DataPosFrac,
ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize);
// Index to itself
ALuint source;
} ALsource;
#define ALsource_Update(s,a) ((s)->Update(s,a))
#define ALsource_DoMix(s,a,b,c,d,e,f,g) ((s)->DoMix(s,a,b,c,d,e,f,g))
#define ALsource_DoHrtfMix(s,a,b,c,d,e,f,g) ((s)->DoHrtfMix(s,a,b,c,d,e,f,g))
ALvoid ReleaseALSources(ALCcontext *Context);
#ifdef __cplusplus
}
#endif
#endif
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