143 lines
3.6 KiB
C
143 lines
3.6 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[ResamplerMax];
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extern const ALsizei ResamplerPrePadding[ResamplerMax];
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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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volatile ALfloat Pitch;
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volatile ALfloat Gain;
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volatile ALfloat OuterGain;
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volatile ALfloat MinGain;
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volatile ALfloat MaxGain;
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volatile ALfloat InnerAngle;
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volatile ALfloat OuterAngle;
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volatile ALfloat RefDistance;
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volatile ALfloat MaxDistance;
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volatile ALfloat RollOffFactor;
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volatile ALfloat Position[3];
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volatile ALfloat Velocity[3];
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volatile ALfloat Orientation[3];
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volatile ALboolean HeadRelative;
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volatile ALboolean Looping;
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volatile enum DistanceModel DistanceModel;
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volatile ALboolean DirectChannels;
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enum Resampler Resampler;
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volatile 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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volatile ALboolean DryGainHFAuto;
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volatile ALboolean WetGainAuto;
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volatile ALboolean WetGainHFAuto;
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volatile ALfloat OuterGainHF;
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volatile ALfloat AirAbsorptionFactor;
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volatile ALfloat RoomRolloffFactor;
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volatile ALfloat DopplerFactor;
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ALdouble Offset;
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ALenum OffsetType;
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// Source Type (Static, Streaming, or Undetermined)
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volatile ALint SourceType;
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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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/* Self ID */
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ALuint id;
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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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