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