/*
   
   File: AQRecorder.h
   Abstract: Helper class for recording audio files via the AudioQueue
   Version: 2.4
   
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   */
  
  ifdef USE_TI_MEDIA
  
  include <AudioToolbox/AudioToolbox.h>
  include <Foundation/Foundation.h>
  include <libkern/OSAtomic.h>
  
  include <CAStreamBasicDescription.h>
  include <CAXException.h>
  
  define kNumberRecordBuffers        3
  define kBufferDurationSeconds .5
  
  class AQRecorder 
  {
  public:
          AQRecorder();
          ~AQRecorder();
          
          UInt32                                                GetNumberChannels() const        { return mRecordFormat.NumberChannels(); }
          CFStringRef                                        GetFileName() const                        { return mFileName; }
          AudioQueueRef                                Queue() const                                { return mQueue; }
          CAStreamBasicDescription        DataFormat() const                        { return mRecordFormat; }
          
          void                        StartRecord(CFStringRef inRecordFile,UInt32 fileFormatID);
          void                        PauseRecord(); //JGH: added
          void                        ResumeRecord(); //JGH: added
          void                        StopRecord();                
          Boolean                        IsRunning() const                        { return mIsRunning; }
          Boolean                        IsPaused() const { return mIsPaused; } //JGH: added
          void                        SetupAudioFormat(UInt32 inFormatID);
          
          UInt64                        startTime;
          
  private:
          CFStringRef                                        mFileName;
          AudioQueueRef                                mQueue;
          AudioQueueBufferRef                        mBuffers[kNumberRecordBuffers];
          AudioFileID                                        mRecordFile;
          SInt64                                                mRecordPacket; // current packet number in record file
          CAStreamBasicDescription        mRecordFormat;
          Boolean                                                mIsRunning;
          Boolean                                                mIsPaused; //JGH: added
          
          void                        CopyEncoderCookieToFile();
          int                                ComputeRecordBufferSize(const AudioStreamBasicDescription *format, float seconds);
          
          static void MyInputBufferHandler(        void *                                                                inUserData,
                                                                           AudioQueueRef                                                inAQ,
                                                                           AudioQueueBufferRef                                        inBuffer,
                                                                           const AudioTimeStamp *                                inStartTime,
                                                                           UInt32                                                                inNumPackets,
                                                                           const AudioStreamPacketDescription*        inPacketDesc);
  };
  
  endif