OpenAL32/Include/alSource.h

   1 #ifndef _AL_SOURCE_H_
   2 #define _AL_SOURCE_H_
   3
   4 #define MAX_SENDS                 4
   5
   6 #include "alFilter.h"
   7 #include "alu.h"
   8 #include "AL/al.h"
   9
  10 #ifdef __cplusplus
  11 extern "C" {
  12 #endif
  13
  14 typedef enum {
  15     POINT_RESAMPLER = 0,
  16     LINEAR_RESAMPLER,
  17     CUBIC_RESAMPLER,
  18
  19     RESAMPLER_MAX,
  20     RESAMPLER_MIN = -1,
  21     RESAMPLER_DEFAULT = LINEAR_RESAMPLER
  22 } resampler_t;
  23 extern resampler_t DefaultResampler;
  24
  25 extern const ALsizei ResamplerPadding[RESAMPLER_MAX];
  26 extern const ALsizei ResamplerPrePadding[RESAMPLER_MAX];
  27
  28
  29 typedef struct ALbufferlistitem
  30 {
  31     struct ALbuffer         *buffer;
  32     struct ALbufferlistitem *next;
  33     struct ALbufferlistitem *prev;
  34 } ALbufferlistitem;
  35
  36 typedef struct ALsource
  37 {
  38     ALfloat      flPitch;
  39     ALfloat      flGain;
  40     ALfloat      flOuterGain;
  41     ALfloat      flMinGain;
  42     ALfloat      flMaxGain;
  43     ALfloat      flInnerAngle;
  44     ALfloat      flOuterAngle;
  45     ALfloat      flRefDistance;
  46     ALfloat      flMaxDistance;
  47     ALfloat      flRollOffFactor;
  48     ALfloat      vPosition[3];
  49     ALfloat      vVelocity[3];
  50     ALfloat      vOrientation[3];
  51     ALboolean    bHeadRelative;
  52     ALboolean    bLooping;
  53     ALenum       DistanceModel;
  54
  55     resampler_t  Resampler;
  56
  57     ALenum       state;
  58     ALuint       position;
  59     ALuint       position_fraction;
  60
  61     struct ALbuffer *Buffer;
  62
  63     ALbufferlistitem *queue; // Linked list of buffers in queue
  64     ALuint BuffersInQueue;   // Number of buffers in queue
  65     ALuint BuffersPlayed;    // Number of buffers played on this loop
  66
  67     ALfilter DirectFilter;
  68
  69     struct {
  70         struct ALeffectslot *Slot;
  71         ALfilter WetFilter;
  72     } Send[MAX_SENDS];
  73
  74     ALboolean DryGainHFAuto;
  75     ALboolean WetGainAuto;
  76     ALboolean WetGainHFAuto;
  77     ALfloat   OuterGainHF;
  78
  79     ALfloat AirAbsorptionFactor;
  80     ALfloat RoomRolloffFactor;
  81     ALfloat DopplerFactor;
  82
  83     ALint  lOffset;
  84     ALint  lOffsetType;
  85
  86     // Source Type (Static, Streaming, or Undetermined)
  87     ALint  lSourceType;
  88
  89     // Current target parameters used for mixing
  90     ALboolean NeedsUpdate;
  91     struct {
  92         ALint Step;
  93
  94         ALfloat DryGains[MAXCHANNELS];
  95         FILTER iirFilter;
  96         ALfloat history[MAXCHANNELS*2];
  97
  98         struct {
  99             ALfloat WetGain;
 100             FILTER iirFilter;
 101             ALfloat history[MAXCHANNELS];
 102         } Send[MAX_SENDS];
 103     } Params;
 104
 105     ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
 106
 107     // Index to itself
 108     ALuint source;
 109 } ALsource;
 110 #define ALsource_Update(s,a)  ((s)->Update(s,a))
 111
 112 ALvoid ReleaseALSources(ALCcontext *Context);
 113
 114 #ifdef __cplusplus
 115 }
 116 #endif
 117
 118 #endif