143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
#ifndef _AL_SOURCE_H_
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#define _AL_SOURCE_H_
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#define MAX_SENDS 4
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#include "alFilter.h"
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#include "alu.h"
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#include "AL/al.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SRC_HISTORY_BITS (6)
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#define SRC_HISTORY_LENGTH (1<<SRC_HISTORY_BITS)
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#define SRC_HISTORY_MASK (SRC_HISTORY_LENGTH-1)
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extern enum Resampler DefaultResampler;
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extern const ALsizei ResamplerPadding[RESAMPLER_MAX];
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extern const ALsizei ResamplerPrePadding[RESAMPLER_MAX];
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typedef struct ALbufferlistitem
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{
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struct ALbuffer *buffer;
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struct ALbufferlistitem *next;
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struct ALbufferlistitem *prev;
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} ALbufferlistitem;
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typedef struct ALsource
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{
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ALfloat flPitch;
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ALfloat flGain;
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ALfloat flOuterGain;
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ALfloat flMinGain;
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ALfloat flMaxGain;
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ALfloat flInnerAngle;
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ALfloat flOuterAngle;
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ALfloat flRefDistance;
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ALfloat flMaxDistance;
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ALfloat flRollOffFactor;
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ALfloat vPosition[3];
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ALfloat vVelocity[3];
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ALfloat vOrientation[3];
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ALboolean bHeadRelative;
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ALboolean bLooping;
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enum DistanceModel DistanceModel;
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ALboolean VirtualChannels;
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enum Resampler Resampler;
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ALenum state;
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ALenum new_state;
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ALuint position;
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ALuint position_fraction;
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ALbufferlistitem *queue; // Linked list of buffers in queue
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ALuint BuffersInQueue; // Number of buffers in queue
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ALuint BuffersPlayed; // Number of buffers played on this loop
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ALfloat DirectGain;
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ALfloat DirectGainHF;
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struct {
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struct ALeffectslot *Slot;
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ALfloat WetGain;
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ALfloat WetGainHF;
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} Send[MAX_SENDS];
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ALboolean DryGainHFAuto;
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ALboolean WetGainAuto;
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ALboolean WetGainHFAuto;
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ALfloat OuterGainHF;
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ALfloat AirAbsorptionFactor;
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ALfloat RoomRolloffFactor;
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ALfloat DopplerFactor;
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ALint lOffset;
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ALint lOffsetType;
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// Source Type (Static, Streaming, or Undetermined)
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ALint lSourceType;
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ALuint NumChannels;
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ALuint SampleSize;
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/* HRTF info */
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ALboolean HrtfMoving;
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ALuint HrtfCounter;
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ALfloat HrtfHistory[MAXCHANNELS][SRC_HISTORY_LENGTH];
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ALfloat HrtfValues[MAXCHANNELS][HRIR_LENGTH][2];
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ALuint HrtfOffset;
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/* Current target parameters used for mixing */
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struct {
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MixerFunc DoMix;
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ALint Step;
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ALfloat HrtfGain;
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ALfloat HrtfDir[3];
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ALfloat HrtfCoeffs[MAXCHANNELS][HRIR_LENGTH][2];
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ALuint HrtfDelay[MAXCHANNELS][2];
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ALfloat HrtfCoeffStep[HRIR_LENGTH][2];
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ALint HrtfDelayStep[2];
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/* A mixing matrix. First subscript is the channel number of the input
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* data (regardless of channel configuration) and the second is the
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* channel target (eg. FRONT_LEFT) */
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ALfloat DryGains[MAXCHANNELS][MAXCHANNELS];
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FILTER iirFilter;
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ALfloat history[MAXCHANNELS*2];
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struct {
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struct ALeffectslot *Slot;
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ALfloat WetGain;
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FILTER iirFilter;
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ALfloat history[MAXCHANNELS];
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} Send[MAX_SENDS];
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} Params;
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volatile ALenum NeedsUpdate;
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ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
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// Index to itself
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ALuint source;
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} ALsource;
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#define ALsource_Update(s,a) ((s)->Update(s,a))
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ALvoid SetSourceState(ALsource *Source, ALCcontext *Context, ALenum state);
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ALboolean ApplyOffset(ALsource *Source);
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ALvoid ReleaseALSources(ALCcontext *Context);
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#ifdef __cplusplus
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}
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#endif
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#endif
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