Use a callback to specify the source update method

3 files changed, 18 insertions, 6 deletions

diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index 0802cbaa..97ecbecf 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -101,10 +101,12 @@ typedef struct ALsource
         FILTER iirFilter;
         ALfloat history[OUTPUTCHANNELS*2];
     } Params;
+    ALvoid (*Update)(struct ALsource *self, const ALCcontext *context);
 
     // Index to itself
     ALuint source;
 } ALsource;
+#define ALsource_Update(s,a)  ((s)->Update(s,a))
 
 ALvoid ReleaseALSources(ALCcontext *Context);
 
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index 55ddbaf6..bd28771f 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -177,7 +177,13 @@ static __inline ALint aluCart2LUTpos(ALfloat re, ALfloat im)
     return pos%LUT_NUM;
 }
 
+struct ALsource;
+
 ALvoid aluInitPanning(ALCdevice *Device);
+
+ALvoid CalcSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
+ALvoid CalcNonAttnSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
+
 ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size);
 ALvoid aluHandleDisconnect(ALCdevice *device);
 
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c
index 6e5ed1e6..0db6f76b 100644
--- a/OpenAL32/alSource.c
+++ b/OpenAL32/alSource.c
@@ -574,6 +574,11 @@ AL_API ALvoid AL_APIENTRY alSourcei(ALuint source,ALenum eParam,ALint lValue)
                             Source->queue = BufferListItem;
                             Source->BuffersInQueue = 1;
 
+                            if(aluChannelsFromFormat(buffer->format) == 1)
+                                Source->Update = CalcSourceParams;
+                            else
+                                Source->Update = CalcNonAttnSourceParams;
+
                             // Increment reference counter for buffer
                             buffer->refcount++;
                         }
@@ -1560,7 +1565,6 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
     ALsizei i;
     ALbufferlistitem *BufferListStart;
     ALbufferlistitem *BufferList;
-    ALboolean HadFormat;
     ALint Frequency;
     ALint Format;
 
@@ -1591,7 +1595,6 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
 
     Frequency = -1;
     Format = -1;
-    HadFormat = AL_FALSE;
 
     // Check existing Queue (if any) for a valid Buffers and get its frequency and format
     BufferList = Source->queue;
@@ -1601,7 +1604,6 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
         {
             Frequency = BufferList->buffer->frequency;
             Format = BufferList->buffer->eOriginalFormat;
-            HadFormat = AL_TRUE;
             break;
         }
         BufferList = BufferList->next;
@@ -1622,6 +1624,11 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
         {
             Frequency = buffer->frequency;
             Format = buffer->eOriginalFormat;
+            if(aluChannelsFromFormat(buffer->format) == 1)
+                Source->Update = CalcSourceParams;
+            else
+                Source->Update = CalcNonAttnSourceParams;
+            Source->NeedsUpdate = AL_TRUE;
         }
         else if(Frequency != buffer->frequency || Format != buffer->eOriginalFormat)
         {
@@ -1677,9 +1684,6 @@ AL_API ALvoid AL_APIENTRY alSourceQueueBuffers(ALuint source, ALsizei n, const A
 
     // Update number of buffers in queue
     Source->BuffersInQueue += n;
-    // If no previous format, mark the source dirty now that it may have one
-    if(!HadFormat)
-        Source->NeedsUpdate = AL_TRUE;
 
 done:
     ProcessContext(Context);