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