src/audio/symbian/streamplayer.h

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