al/listener.h

   1 #ifndef AL_LISTENER_H
   2 #define AL_LISTENER_H
   3
   4 #include <array>
   5 #include <atomic>
   6
   7 #include "AL/al.h"
   8 #include "AL/alc.h"
   9 #include "AL/efx.h"
  10
  11 #include "almalloc.h"
  12 #include "vecmat.h"
  13
  14 enum class DistanceModel;
  15
  16
  17 struct ALlistenerProps {
  18     std::array<float,3> Position;
  19     std::array<float,3> Velocity;
  20     std::array<float,3> OrientAt;
  21     std::array<float,3> OrientUp;
  22     float Gain;
  23     float MetersPerUnit;
  24
  25     std::atomic<ALlistenerProps*> next;
  26
  27     DEF_NEWDEL(ALlistenerProps)
  28 };
  29
  30 struct ALlistener {
  31     std::array<float,3> Position{{0.0f, 0.0f, 0.0f}};
  32     std::array<float,3> Velocity{{0.0f, 0.0f, 0.0f}};
  33     std::array<float,3> OrientAt{{0.0f, 0.0f, -1.0f}};
  34     std::array<float,3> OrientUp{{0.0f, 1.0f, 0.0f}};
  35     float Gain{1.0f};
  36     float mMetersPerUnit{AL_DEFAULT_METERS_PER_UNIT};
  37
  38     std::atomic_flag PropsClean;
  39
  40     struct {
  41         /* Pointer to the most recent property values that are awaiting an
  42          * update.
  43          */
  44         std::atomic<ALlistenerProps*> Update{nullptr};
  45
  46         alu::Matrix Matrix;
  47         alu::Vector Velocity;
  48
  49         float Gain;
  50         float MetersPerUnit;
  51
  52         float DopplerFactor;
  53         float SpeedOfSound; /* in units per sec! */
  54
  55         bool SourceDistanceModel;
  56         DistanceModel mDistanceModel;
  57     } Params;
  58
  59     ALlistener() { PropsClean.test_and_set(std::memory_order_relaxed); }
  60
  61     DISABLE_ALLOC()
  62 };
  63
  64 void UpdateListenerProps(ALCcontext *context);
  65
  66 #endif