Add a parameter for queue size.

Patch by Anuradha Suraparaju anuradha rd bbc co uk

Originally committed as revision 14150 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/libdirac_libschro.h

@@ -80,6 +80,8 @@ typedef struct FfmpegDiracSchroQueue
     FfmpegDiracSchroQueueElement *p_head;
     /** Pointer to tail of queue */
     FfmpegDiracSchroQueueElement *p_tail;
+    /** Queue size*/
+    int size;
 } FfmpegDiracSchroQueue;
 
 /**