OpenAL32/Include/alSource.h

   1 #ifndef _AL_SOURCE_H_
   2 #define _AL_SOURCE_H_
   3
   4 #define AL_NUM_SOURCE_PARAMS    128
   5
   6 #define MAX_SENDS                 2
   7
   8 #include "alFilter.h"
   9 #include "alu.h"
  10 #include "AL/al.h"
  11
  12 #define AL_DIRECT_FILTER                                   0x20005
  13 #define AL_AUXILIARY_SEND_FILTER                           0x20006
  14 #define AL_AIR_ABSORPTION_FACTOR                           0x20007
  15 #define AL_ROOM_ROLLOFF_FACTOR                             0x20008
  16 #define AL_CONE_OUTER_GAINHF                               0x20009
  17 #define AL_DIRECT_FILTER_GAINHF_AUTO                       0x2000A
  18 #define AL_AUXILIARY_SEND_FILTER_GAIN_AUTO                 0x2000B
  19 #define AL_AUXILIARY_SEND_FILTER_GAINHF_AUTO               0x2000C
  20
  21 #ifdef __cplusplus
  22 extern "C" {
  23 #endif
  24
  25 typedef enum {
  26     POINT = 0,
  27     LINEAR,
  28
  29     RESAMPLER_MAX
  30 } resampler_t;
  31 extern resampler_t DefaultResampler;
  32
  33 typedef struct ALbufferlistitem
  34 {
  35     struct ALbuffer         *buffer;
  36     struct ALbufferlistitem *next;
  37 } ALbufferlistitem;
  38
  39 typedef struct ALsource
  40 {
  41     ALfloat      flPitch;
  42     ALfloat      flGain;
  43     ALfloat      flOuterGain;
  44     ALfloat      flMinGain;
  45     ALfloat      flMaxGain;
  46     ALfloat      flInnerAngle;
  47     ALfloat      flOuterAngle;
  48     ALfloat      flRefDistance;
  49     ALfloat      flMaxDistance;
  50     ALfloat      flRollOffFactor;
  51     ALfloat      vPosition[3];
  52     ALfloat      vVelocity[3];
  53     ALfloat      vOrientation[3];
  54     ALboolean    bHeadRelative;
  55     ALboolean    bLooping;
  56     ALenum       DistanceModel;
  57
  58     resampler_t  Resampler;
  59
  60     ALenum       state;
  61     ALuint       position;
  62     ALuint       position_fraction;
  63
  64     struct ALbuffer *Buffer;
  65
  66     struct ALbufferlistitem *queue; // Linked list of buffers in queue
  67     ALuint       BuffersInQueue;    // Number of buffers in queue
  68     ALuint       BuffersPlayed;     // Number of buffers played on this loop
  69
  70     ALfilter DirectFilter;
  71
  72     struct {
  73         struct ALeffectslot *Slot;
  74         ALfilter WetFilter;
  75     } Send[MAX_SENDS];
  76
  77     ALboolean DryGainHFAuto;
  78     ALboolean WetGainAuto;
  79     ALboolean WetGainHFAuto;
  80     ALfloat   OuterGainHF;
  81
  82     ALfloat AirAbsorptionFactor;
  83     ALfloat RoomRolloffFactor;
  84     ALfloat DopplerFactor;
  85
  86     ALint  lOffset;
  87     ALint  lOffsetType;
  88
  89     // Source Type (Static, Streaming, or Undetermined)
  90     ALint  lSourceType;
  91
  92     // Current gains, which are ramped while mixed
  93     ALfloat DryGains[OUTPUTCHANNELS];
  94     ALfloat WetGains[MAX_SENDS];
  95     ALboolean FirstStart;
  96
  97     // Current target parameters used for mixing
  98     ALboolean NeedsUpdate;
  99     struct {
 100         ALfloat DryGains[OUTPUTCHANNELS];
 101         ALfloat WetGains[MAX_SENDS];
 102         ALfloat Pitch;
 103
 104         struct {
 105             FILTER iirFilter;
 106             ALfloat history[OUTPUTCHANNELS];
 107         } Send[MAX_SENDS];
 108
 109         FILTER iirFilter;
 110         ALfloat history[OUTPUTCHANNELS*2];
 111     } Params;
 112
 113     // Index to itself
 114     ALuint source;
 115
 116     struct ALsource *next;
 117 } ALsource;
 118
 119 ALvoid ReleaseALSources(ALCcontext *Context);
 120
 121 #ifdef __cplusplus
 122 }
 123 #endif
 124
 125 #endif