1 files changed, 45 insertions, 7 deletions
diff --git a/OpenAL32/Include/alListener.h b/OpenAL32/Include/alListener.h
index c9bd9be0..0d80a8d7 100644
--- a/OpenAL32/Include/alListener.h
+++ b/OpenAL32/Include/alListener.h
@@ -8,20 +8,58 @@
 extern "C" {
 #endif
 
+struct ALcontextProps {
+    ALfloat DopplerFactor;
+    ALfloat DopplerVelocity;
+    ALfloat SpeedOfSound;
+    ALboolean SourceDistanceModel;
+    enum DistanceModel DistanceModel;
+    ALfloat MetersPerUnit;
+
+    ATOMIC(struct ALcontextProps*) next;
+};
+
+struct ALlistenerProps {
+    ALfloat Position[3];
+    ALfloat Velocity[3];
+    ALfloat Forward[3];
+    ALfloat Up[3];
+    ALfloat Gain;
+
+    ATOMIC(struct ALlistenerProps*) next;
+};
+
 typedef struct ALlistener {
-    aluVector Position;
-    aluVector Velocity;
-    volatile ALfloat Forward[3];
-    volatile ALfloat Up[3];
-    volatile ALfloat Gain;
-    volatile ALfloat MetersPerUnit;
+    alignas(16) ALfloat Position[3];
+    ALfloat Velocity[3];
+    ALfloat Forward[3];
+    ALfloat Up[3];
+    ALfloat Gain;
+
+    ATOMIC_FLAG PropsClean;
+
+    /* Pointer to the most recent property values that are awaiting an update.
+     */
+    ATOMIC(struct ALlistenerProps*) Update;
 
     struct {
-        aluMatrixd Matrix;
+        aluMatrixf Matrix;
         aluVector  Velocity;
+
+        ALfloat Gain;
+        ALfloat MetersPerUnit;
+
+        ALfloat DopplerFactor;
+        ALfloat SpeedOfSound; /* in units per sec! */
+        ALfloat ReverbSpeedOfSound; /* in meters per sec! */
+
+        ALboolean SourceDistanceModel;
+        enum DistanceModel DistanceModel;
     } Params;
 } ALlistener;
 
+void UpdateListenerProps(ALCcontext *context);
+
 #ifdef __cplusplus
 }
 #endif