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annotate OpenAL32/Include/alSource.h @ 0:f9476ff7637e

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initial forking of open-al to create multiple listeners
author Robert McIntyre <rlm@mit.edu>
date Tue, 25 Oct 2011 13:02:31 -0700
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rlm@0 1 #ifndef _AL_SOURCE_H_
rlm@0 2 #define _AL_SOURCE_H_
rlm@0 3
rlm@0 4 #define MAX_SENDS 4
rlm@0 5
rlm@0 6 #include "alFilter.h"
rlm@0 7 #include "alu.h"
rlm@0 8 #include "AL/al.h"
rlm@0 9
rlm@0 10 #ifdef __cplusplus
rlm@0 11 extern "C" {
rlm@0 12 #endif
rlm@0 13
rlm@0 14 #define SRC_HISTORY_BITS (6)
rlm@0 15 #define SRC_HISTORY_LENGTH (1<<SRC_HISTORY_BITS)
rlm@0 16 #define SRC_HISTORY_MASK (SRC_HISTORY_LENGTH-1)
rlm@0 17
rlm@0 18 extern enum Resampler DefaultResampler;
rlm@0 19
rlm@0 20 extern const ALsizei ResamplerPadding[RESAMPLER_MAX];
rlm@0 21 extern const ALsizei ResamplerPrePadding[RESAMPLER_MAX];
rlm@0 22
rlm@0 23
rlm@0 24 typedef struct ALbufferlistitem
rlm@0 25 {
rlm@0 26 struct ALbuffer *buffer;
rlm@0 27 struct ALbufferlistitem *next;
rlm@0 28 struct ALbufferlistitem *prev;
rlm@0 29 } ALbufferlistitem;
rlm@0 30
rlm@0 31 typedef struct ALsource
rlm@0 32 {
rlm@0 33 ALfloat flPitch;
rlm@0 34 ALfloat flGain;
rlm@0 35 ALfloat flOuterGain;
rlm@0 36 ALfloat flMinGain;
rlm@0 37 ALfloat flMaxGain;
rlm@0 38 ALfloat flInnerAngle;
rlm@0 39 ALfloat flOuterAngle;
rlm@0 40 ALfloat flRefDistance;
rlm@0 41 ALfloat flMaxDistance;
rlm@0 42 ALfloat flRollOffFactor;
rlm@0 43 ALfloat vPosition[3];
rlm@0 44 ALfloat vVelocity[3];
rlm@0 45 ALfloat vOrientation[3];
rlm@0 46 ALboolean bHeadRelative;
rlm@0 47 ALboolean bLooping;
rlm@0 48 enum DistanceModel DistanceModel;
rlm@0 49 ALboolean VirtualChannels;
rlm@0 50
rlm@0 51 enum Resampler Resampler;
rlm@0 52
rlm@0 53 ALenum state;
rlm@0 54 ALenum new_state;
rlm@0 55 ALuint position;
rlm@0 56 ALuint position_fraction;
rlm@0 57
rlm@0 58 struct ALbuffer *Buffer;
rlm@0 59
rlm@0 60 ALbufferlistitem *queue; // Linked list of buffers in queue
rlm@0 61 ALuint BuffersInQueue; // Number of buffers in queue
rlm@0 62 ALuint BuffersPlayed; // Number of buffers played on this loop
rlm@0 63
rlm@0 64 ALfilter DirectFilter;
rlm@0 65
rlm@0 66 struct {
rlm@0 67 struct ALeffectslot *Slot;
rlm@0 68 ALfilter WetFilter;
rlm@0 69 } Send[MAX_SENDS];
rlm@0 70
rlm@0 71 ALboolean DryGainHFAuto;
rlm@0 72 ALboolean WetGainAuto;
rlm@0 73 ALboolean WetGainHFAuto;
rlm@0 74 ALfloat OuterGainHF;
rlm@0 75
rlm@0 76 ALfloat AirAbsorptionFactor;
rlm@0 77 ALfloat RoomRolloffFactor;
rlm@0 78 ALfloat DopplerFactor;
rlm@0 79
rlm@0 80 ALint lOffset;
rlm@0 81 ALint lOffsetType;
rlm@0 82
rlm@0 83 // Source Type (Static, Streaming, or Undetermined)
rlm@0 84 ALint lSourceType;
rlm@0 85
rlm@0 86 ALuint NumChannels;
rlm@0 87 ALuint SampleSize;
rlm@0 88
rlm@0 89 /* HRTF info */
rlm@0 90 ALboolean HrtfMoving;
rlm@0 91 ALuint HrtfCounter;
rlm@0 92 ALfloat HrtfHistory[MAXCHANNELS][SRC_HISTORY_LENGTH];
rlm@0 93 ALfloat HrtfValues[MAXCHANNELS][HRIR_LENGTH][2];
rlm@0 94 ALuint HrtfOffset;
rlm@0 95
rlm@0 96 /* Current target parameters used for mixing */
rlm@0 97 struct {
rlm@0 98 MixerFunc DoMix;
rlm@0 99
rlm@0 100 ALint Step;
rlm@0 101
rlm@0 102 ALfloat HrtfGain;
rlm@0 103 ALfloat HrtfDir[3];
rlm@0 104 ALfloat HrtfCoeffs[MAXCHANNELS][HRIR_LENGTH][2];
rlm@0 105 ALuint HrtfDelay[MAXCHANNELS][2];
rlm@0 106 ALfloat HrtfCoeffStep[HRIR_LENGTH][2];
rlm@0 107 ALint HrtfDelayStep[2];
rlm@0 108
rlm@0 109 /* A mixing matrix. First subscript is the channel number of the input
rlm@0 110 * data (regardless of channel configuration) and the second is the
rlm@0 111 * channel target (eg. FRONT_LEFT) */
rlm@0 112 ALfloat DryGains[MAXCHANNELS][MAXCHANNELS];
rlm@0 113
rlm@0 114 FILTER iirFilter;
rlm@0 115 ALfloat history[MAXCHANNELS*2];
rlm@0 116
rlm@0 117 struct {
rlm@0 118 struct ALeffectslot *Slot;
rlm@0 119 ALfloat WetGain;
rlm@0 120 FILTER iirFilter;
rlm@0 121 ALfloat history[MAXCHANNELS];
rlm@0 122 } Send[MAX_SENDS];
rlm@0 123 } Params;
rlm@0 124 ALboolean NeedsUpdate;
rlm@0 125
rlm@0 126 ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
rlm@0 127
rlm@0 128 // Index to itself
rlm@0 129 ALuint source;
rlm@0 130 } ALsource;
rlm@0 131 #define ALsource_Update(s,a) ((s)->Update(s,a))
rlm@0 132
rlm@0 133 ALvoid SetSourceState(ALsource *Source, ALCcontext *Context, ALenum state);
rlm@0 134 ALboolean ApplyOffset(ALsource *Source);
rlm@0 135
rlm@0 136 ALvoid ReleaseALSources(ALCcontext *Context);
rlm@0 137
rlm@0 138 #ifdef __cplusplus
rlm@0 139 }
rlm@0 140 #endif
rlm@0 141
rlm@0 142 #endif