3 files changed, 15 insertions, 1 deletions
diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index ee342f92..1b9d92ad 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -112,11 +112,21 @@ typedef struct ALsource
     } Params;
 
     ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
+    ALvoid (*DoMix)(struct ALsource *self, ALCdevice *Device,
+                    const ALvoid *RESTRICT data,
+                    ALuint *DataPosInt, ALuint *DataPosFrac,
+                    ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize);
+    ALvoid (*DoHrtfMix)(struct ALsource *self, ALCdevice *Device,
+                        const ALvoid *RESTRICT data,
+                        ALuint *DataPosInt, ALuint *DataPosFrac,
+                        ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize);
 
     // Index to itself
     ALuint source;
 } ALsource;
-#define ALsource_Update(s,a)  ((s)->Update(s,a))
+#define ALsource_Update(s,a)                 ((s)->Update(s,a))
+#define ALsource_DoMix(s,a,b,c,d,e,f,g)      ((s)->DoMix(s,a,b,c,d,e,f,g))
+#define ALsource_DoHrtfMix(s,a,b,c,d,e,f,g)  ((s)->DoHrtfMix(s,a,b,c,d,e,f,g))
 
 ALvoid ReleaseALSources(ALCcontext *Context);
 
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index cc47cc1b..41ad5f6b 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -111,6 +111,7 @@ static __inline ALdouble cubic(ALdouble val0, ALdouble val1, ALdouble val2, ALdo
 }
 
 struct ALsource;
+struct ALbuffer;
 
 ALvoid aluInitPanning(ALCdevice *Device);
 ALint aluCart2LUTpos(ALfloat re, ALfloat im);
@@ -118,6 +119,7 @@ ALint aluCart2LUTpos(ALfloat re, ALfloat im);
 ALvoid CalcSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
 ALvoid CalcNonAttnSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
 
+ALvoid SelectMixer(struct ALsource *Source, struct ALbuffer *Buffer);
 ALvoid MixSource(struct ALsource *Source, ALCdevice *Device, ALuint SamplesToDo);
 
 ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size);
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c
index d6e9b18a..fd77527f 100644
--- a/OpenAL32/alSource.c
+++ b/OpenAL32/alSource.c
@@ -570,6 +570,7 @@ AL_API ALvoid AL_APIENTRY alSourcei(ALuint source,ALenum eParam,ALint lValue)
                                 Source->Update = CalcSourceParams;
                             else
                                 Source->Update = CalcNonAttnSourceParams;
+                            SelectMixer(Source, buffer);
 
                             // Increment reference counter for buffer
                             buffer->refcount++;
@@ -1614,6 +1615,7 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
                 Source->Update = CalcSourceParams;
             else
                 Source->Update = CalcNonAttnSourceParams;
+            SelectMixer(Source, buffer);
 
             Source->NeedsUpdate = AL_TRUE;
         }