From 849f85549d47a4e1aecdfbdd3300c866fb288fca Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Wed, 24 Aug 2016 02:17:55 -0700
Subject: Consolidate duplicate code

---
 Alc/ALu.c | 62 +++++++++++++++++++++++---------------------------------------
 1 file changed, 23 insertions(+), 39 deletions(-)

(limited to 'Alc/ALu.c')

diff --git a/Alc/ALu.c b/Alc/ALu.c
index 54905ebd..80a031fc 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -1296,54 +1296,38 @@ static void CalcSourceParams(ALvoice *voice, ALCcontext *context, ALboolean forc
     struct ALsourceProps *props;
 
     props = ATOMIC_EXCHANGE(struct ALsourceProps*, &source->Update, NULL, almemory_order_acq_rel);
-    if(!props)
-    {
-        if(!force)
-            return;
-        BufferListItem = ATOMIC_LOAD(&source->queue, almemory_order_relaxed);
-        while(BufferListItem != NULL)
-        {
-            const ALbuffer *buffer;
-            if((buffer=BufferListItem->buffer) != NULL)
-            {
-                if(buffer->FmtChannels == FmtMono)
-                    CalcAttnSourceParams(voice, &voice->Props, buffer, context);
-                else
-                    CalcNonAttnSourceParams(voice, &voice->Props, buffer, context);
-                break;
-            }
-            BufferListItem = BufferListItem->next;
-        }
-    }
-    else
+    if(!props && !force) return;
+
+    if(props)
     {
-        BufferListItem = ATOMIC_LOAD(&source->queue, almemory_order_relaxed);
-        while(BufferListItem != NULL)
-        {
-            const ALbuffer *buffer;
-            if((buffer=BufferListItem->buffer) != NULL)
-            {
-                if(buffer->FmtChannels == FmtMono)
-                    CalcAttnSourceParams(voice, props, buffer, context);
-                else
-                    CalcNonAttnSourceParams(voice, props, buffer, context);
-                break;
-            }
-            BufferListItem = BufferListItem->next;
-        }
         voice->Props = *props;
 
-        /* WARNING: A livelock is theoretically possible if another thread keeps
-        * changing the freelist head without giving this a chance to actually swap
-        * in the old container (practically impossible with this little code,
-        * but...).
-        */
+        /* WARNING: A livelock is theoretically possible if another thread
+         * keeps changing the freelist head without giving this a chance to
+         * actually swap in the old container (practically impossible with this
+         * little code, but...).
+         */
         first = ATOMIC_LOAD(&source->FreeList);
         do {
             ATOMIC_STORE(&props->next, first, almemory_order_relaxed);
         } while(ATOMIC_COMPARE_EXCHANGE_WEAK(struct ALsourceProps*,
                 &source->FreeList, &first, props) == 0);
     }
+
+    BufferListItem = ATOMIC_LOAD(&source->queue, almemory_order_relaxed);
+    while(BufferListItem != NULL)
+    {
+        const ALbuffer *buffer;
+        if((buffer=BufferListItem->buffer) != NULL)
+        {
+            if(buffer->FmtChannels == FmtMono)
+                CalcAttnSourceParams(voice, &voice->Props, buffer, context);
+            else
+                CalcNonAttnSourceParams(voice, &voice->Props, buffer, context);
+            break;
+        }
+        BufferListItem = BufferListItem->next;
+    }
 }
 
 
-- 
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