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                 void Request();
  57                 void SetCapsL();
  58
  59                 MStreamProvider& iProvider;
  60                 MStreamObs& iObs;
  61                 TInt iVolume;
  62
  63                 CMdaAudioOutputStream* iStream;
  64
  65                 TInt iRate;
  66                 TInt iChannels;
  67                 TUint32 iType;
  68
  69                 enum
  70                 {
  71                         ENone = 0,
  72                         EInited = 0x1,
  73                         EStarted = 0x2,
  74                         EStopped = 0x4,
  75                         EVolumeChange = 0x8,
  76                         EDied             = 0x10
  77                 };
  78
  79                 TInt iState;
  80                 TBuf8<KSilenceBuffer> iSilence;
  81                 TPtrC8 iPtr;
  82 };
  83
  84 #endif