//
  //  AudioStreamer.h
  //  StreamingAudioPlayer
  //
  //  Created by Matt Gallagher on 27/09/08.
  //  Copyright 2008 Matt Gallagher. All rights reserved.
  //
  //  Permission is given to use this source code file, free of charge, in any
  //  project, commercial or otherwise, entirely at your risk, with the condition
  //  that any redistribution (in part or whole) of source code must retain
  //  this copyright and permission notice. Attribution in compiled projects is
  //  appreciated but not required.
  //
  ifdef USE_TI_MEDIA
  
  ifdef TARGET_OS_IPHONE                        
  #import <UIKit/UIKit.h>
  else
  #import <Cocoa/Cocoa.h>
  endif                         
  
  #import <AudioStreamer.h>
  include <pthread.h>
  include <AudioToolbox/AudioToolbox.h>
  
  @interface AudioStreamerBC : NSObject<AudioStreamerProtocol>
  {
          NSURL *url;
          id<AudioStreamerDelegate> delegate;
  
          //
          // Special threading consideration:
          //        The audioQueue property should only ever be accessed inside a
          //        synchronized(self) block and only *after* checking that ![self isFinishing]
          //
          AudioQueueRef audioQueue;
          AudioFileStreamID audioFileStream;        // the audio file stream parser
          
          AudioQueueBufferRef audioQueueBuffer[kNumAQBufs];                // audio queue buffers
          AudioStreamPacketDescription packetDescs[kAQMaxPacketDescs];        // packet descriptions for enqueuing audio
          unsigned int fillBufferIndex;        // the index of the audioQueueBuffer that is being filled
          size_t bytesFilled;                                // how many bytes have been filled
          size_t packetsFilled;                        // how many packets have been filled
          bool inuse[kNumAQBufs];                        // flags to indicate that a buffer is still in use
          NSInteger buffersUsed;
      NSUInteger bufferSize;      // Dynamic size of the buffer (buffer is default size of 2k if unspec'd)
          
          TI_AudioStreamerState state;
          TI_AudioStreamerStopReason stopReason;
          TI_AudioStreamerErrorCode errorCode;
          OSStatus err;
          
          bool discontinuous;                        // flag to indicate middle of the stream
          
          pthread_mutex_t queueBuffersMutex;                        // a mutex to protect the inuse flags
          pthread_cond_t queueBufferReadyCondition;        // a condition varable for handling the inuse flags
  
          CFReadStreamRef stream;
          
          NSUInteger dataOffset;
          UInt32 bitRate;
  
          bool seekNeeded;
          double seekTime;
          double sampleRate;
          double lastProgress;
  }
  
  @property TI_AudioStreamerErrorCode errorCode;
  @property (readonly) TI_AudioStreamerState state;
  @property (readonly) double progress;
  @property (readwrite) UInt32 bitRate;
  @property (nonatomic,readwrite,assign) NSUInteger bufferSize;
  
  (id)initWithURL:(NSURL *)aURL;
  (void)start;
  (void)stop;
  (void)pause;
  (BOOL)isPlaying;
  (BOOL)isPaused;
  (BOOL)isWaiting;
  (BOOL)isIdle;
  
  @end
  
  endif