decoder/renderer: use memory cache and single decoder to optimize frames for

cycles

app/render/backend/audiorenderworker.cpp

@@ -2,8 +2,8 @@
 
 #include "audio/audiomanager.h"
 
-AudioRenderWorker::AudioRenderWorker(QObject *parent) :
-  RenderWorker(parent)
+AudioRenderWorker::AudioRenderWorker(DecoderCache* decoder_cache, QObject *parent) :
+  RenderWorker(decoder_cache, parent)
 {
 }