src/audio/symbian/streamplayer.h

   1 #ifndef STREAMPLAYER_H
   2 #define STREAMPLAYER_H
   3
   4 #include<MdaAudioOutputStream.h>
   5
   6 const TInt KSilenceBuffer = 256;
   7
   8 class MStreamObs
   9     {
  10     public:
  11         enum
  12         {
  13         EInit,
  14         EPlay,
  15         EWrite,
  16         EClose,
  17         };
  18         virtual void Complete(TInt aState, TInt aError) = 0;
  19     };
  20
  21 class MStreamProvider
  22         {
  23         public:
  24                 virtual TPtrC8 Data() = 0;
  25         };
  26
  27 NONSHARABLE_CLASS(CStreamPlayer) : public CBase, public MMdaAudioOutputStreamCallback
  28         {
  29         public:
  30                 CStreamPlayer(MStreamProvider& aProvider, MStreamObs& aObs);
  31                 ~CStreamPlayer();
  32                 void ConstructL();
  33
  34                 static TInt ClosestSupportedRate(TInt aRate);
  35
  36                 TInt OpenStream(TInt aRate, TInt aChannels, TUint32 aType = KMMFFourCCCodePCM16);
  37
  38                 void SetVolume(TInt aNew);
  39                 TInt Volume() const;
  40                 TInt MaxVolume() const;
  41
  42                 void Stop();
  43                 void Start();
  44                 void Open();
  45                 void Close();
  46
  47                 TBool Playing() const;
  48                 TBool Closed() const;
  49
  50         private:
  51
  52                 void MaoscOpenComplete(TInt aError) ;
  53                 void MaoscBufferCopied(TInt aError, const TDesC8& aBuffer);
  54                 void MaoscPlayComplete(TInt aError);
  55
  56         private:
  57                 void Request();
  58                 void SetCapsL();
  59
  60         private:
  61                 MStreamProvider& iProvider;
  62                 MStreamObs& iObs;
  63                 TInt iVolume;
  64
  65                 CMdaAudioOutputStream* iStream;
  66
  67                 TInt iRate;
  68                 TInt iChannels;
  69                 TUint32 iType;
  70
  71                 enum
  72                         {
  73                                 ENone = 0,
  74                                 EInited = 0x1,
  75                                 EStarted = 0x2,
  76                                 EStopped = 0x4,
  77                                 EVolumeChange = 0x8,
  78                                 EDied             = 0x10
  79                         };
  80
  81                 TInt iState;
  82                 TBuf8<KSilenceBuffer> iSilence;
  83                 TPtrC8 iPtr;
  84
  85         };
  86
  87
  88 #endif
  89