OpenAL32/Include/alSource.h

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