Updated examples to use updated EZOutputDataSource method output:shouldFillAudioBufferList:withNumberOfFrames: instead of the old method. Much cleaner and much more stable

EZAudioExamples/iOS/EZAudioPlayFileExample/EZAudioPlayFileExample/PlayFileViewController.m

@@ -13,8 +13,6 @@
   UInt32 _waveformDrawingIndex;
   UInt32 _waveformFrameRate;
   UInt32 _waveformTotalBuffers;
-  
-  AudioBufferList *_fileBufferList;
 }
 @end
 
@@ -68,11 +66,6 @@
    Try opening the sample file
    */
   [self openFileWithFilePathURL:[NSURL fileURLWithPath:kAudioFileDefault]];
- 
-  /**
-   Initialize the AudioBufferList that will hold the file's data (we're essentially streaming only chunks of the file at a time to keep a low memory footprint.
-   */
-  _fileBufferList = [EZAudio audioBufferList];
   
 }
 
@@ -186,46 +179,24 @@ withNumberOfChannels:(UInt32)numberOfChannels {
 }
 
 #pragma mark - EZOutputDataSource
--(AudioBufferList *)output:(EZOutput *)output
- needsBufferListWithFrames:(UInt32)frames
-            withBufferSize:(UInt32 *)bufferSize {
-  if( self.audioFile ){
-    
-    // Reached the end of the file
-    if( self.eof ){
-      // Here's what you do to loop the file
-      [self.audioFile seekToFrame:0];
-      self.eof = NO;
-      _fileBufferList = [EZAudio audioBufferList];
-       return nil;
-    }
-    
-    // Allocate a buffer list to hold the file's data
-    BOOL eof;
+-(void)output:(EZOutput *)output shouldFillAudioBufferList:(AudioBufferList *)audioBufferList withNumberOfFrames:(UInt32)frames
+{
+  if( self.audioFile )
+  {
+    UInt32 bufferSize;
     [self.audioFile readFrames:frames
-               audioBufferList:_fileBufferList
-                    bufferSize:bufferSize
-                           eof:&eof];
-    self.eof = eof;
-    
-    // Reached the end of the file on the last read
-    if( eof ){
-      [EZAudio freeBufferList:_fileBufferList];
-      return nil;
+               audioBufferList:audioBufferList
+                    bufferSize:&bufferSize
+                           eof:&_eof];
+    if( _eof )
+    {
+      [self seekToFrame:0];
     }
-    
-    return _fileBufferList;
-    
   }
-  return nil;
 }
 
 -(AudioStreamBasicDescription)outputHasAudioStreamBasicDescription:(EZOutput *)output {
   return self.audioFile.clientFormat;
 }
 
--(void)dealloc {
-  [EZAudio freeBufferList:_fileBufferList];
-}
-
 @end