--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetoothengine/btaudiostreamer/inc/btaudiostreamer.h	Mon Jan 18 20:28:57 2010 +0200
@@ -0,0 +1,170 @@
+/*
+* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  This is an interface class that exports streamer's functions 
+*                for its clients. The functionality is implemented in 
+*                BTAudioStreamerSender, this class forwards the function 
+*                calls to it. 
+*
+*/
+
+
+#ifndef __BTAUDIOSTREAMER_H__
+#define __BTAUDIOSTREAMER_H__
+
+#include <in_sock.h>
+#include <rtp.h> 
+
+#include "btaudiostreaminputbase.h" 
+
+class CBTAudioStreamSender; 
+
+/**
+ *  An observer pattern. 
+ *
+ *  This class defines an observer interface for BT Audio Stream Sender. 
+ *
+ *  @lib btaudiostreamer.lib
+ *  @since S60 v3.1 
+ */
+NONSHARABLE_CLASS(MBTAudioStreamSenderObserver) 
+    {
+    public:
+    virtual void NotifyBufferSent(const TDesC8& aBuffer ) = 0;         // Buffer sent. 
+    virtual void NotifyErrorSending(const TDesC8& aBuffer ) = 0;    // Could not send a packet at all. 
+    };
+
+/**
+ *  BT Audio Streamer class. 
+ *
+ *  This class implements the audio streaming over A2DP. 
+ *  It acts as an interface between the controller, BT Audio Adaptation and RTP API. 
+ *  It uses helper class CBTAudioStreamSender to handle 
+ *  the frame contruction and sending. 
+ *
+ *  @lib btaudiostreamer.lib
+ *  @since S60 v3.1 
+ */
+class CBTAudioStreamer : public CBase, public MBTAudioStreamObserver, public MBTAudioStreamSenderObserver 
+    {
+    public:
+
+    IMPORT_C static CBTAudioStreamer* NewL(); 
+    
+    /**
+     * A method for preparing the BT Audio Streamer for incoming data. 
+     *
+     * @since S60 v3.1
+     * @param aSocket Bluetooth socket instance, needed for getting the RTP sending class instance. 
+     * @param aFrameLength Length of a single audio data frame, needed for calculating the send packet size. 
+     * @param aAudioInput The API where the data is received and where the sending of packets will be confirmed. 
+     * @return void. 
+     */
+    IMPORT_C TInt SetNewFrameLength(const TUint aFrameLength, const TUint aTargetBitrate);
+
+    /**
+     * A method for preparing the BT Audio Streamer for incoming data. 
+     *
+     * @since S60 v3.1
+     * @param aSocket Bluetooth socket instance, needed for getting the RTP sending class instance. 
+     * @param aFrameLength Length of a single audio data frame, needed for calculating the send packet size. 
+     * @param aAudioInput The API where the data is received and where the sending of packets will be confirmed. 
+     * @return void. 
+     */
+    IMPORT_C void StartL(RSocket& aSocket, const TUint aFrameLength, CBTAudioStreamInputBase* aAudioInput, const TUint aTargetBitrate);
+
+    /**
+     * A method for cleaning up the BT Audio Streamer after streaming data. 
+     *
+     * @since S60 v3.1
+     * @param void. 
+     * @return void. 
+     */
+    IMPORT_C void Stop(); 
+
+    virtual ~CBTAudioStreamer();
+
+    /**
+     * From MBTAudioStreamObserver.
+     * This method receives data from the data producer. 
+     *
+     * @since S60 v3.1
+     * @param aBuffer contains the audio data frames. 
+     * @return a Symbian OS wide error code. 
+     */
+    TInt Receive(const TDesC8& aBuffer);
+
+    /**
+     * From MBTAudioStreamObserver.
+     * This method receives data and timestamps from the data producer. 
+     *
+     * @since S60 v3.1
+     * @param aBuffer contains the audio data frames. 
+     * @param aTimestamp The timestamp of the audio data frames. 
+     *                   34 minutes max. interval should not be a problem to us. 
+     * @return a Symbian OS wide error code. 
+     */
+    TInt Receive(const TDesC8& aBuffer, TTimeIntervalMicroSeconds aTimestamp);
+
+    /**
+     * From MBTAudioStreamSenderObserver.
+     * This method is used for reporting that the referred buffer has been sent. 
+     * This tells the data producer that we're ready to receive more data. 
+     *
+     * @since S60 v3.1
+     * @param aBuffer refers to the original bufffer that we received in Receive method. 
+     * @return void. 
+     */
+    void NotifyBufferSent( const TDesC8& aBuffer );  
+
+    /**
+     * From MBTAudioStreamSenderObserver.
+     * This method is used for reporting that the buffer wasn't sent because of an error. 
+     * This method then informs the error observer class. 
+     *
+     * @since S60 v3.1
+     * @param aBuffer refers to the original bufffer that we received in Receive method. 
+     * @return void. 
+     */
+    void NotifyErrorSending( const TDesC8& aBuffer );  
+
+    private:
+    CBTAudioStreamer();
+    void ConstructL();
+
+    private:
+    /**
+     * This stores a pointer to the audio input interface. 
+     * After a buffer has been processed, this interface must be informed. 
+     */
+    CBTAudioStreamInputBase* iAudioInput; 
+
+    /**
+     * This points to a helper class that handles the sending of a frame. 
+     * Own.  
+     */
+    CBTAudioStreamSender* iSender; 
+
+    /**
+     * RTP session object that is needed for sending RTP frames. 
+     */
+    RRtpSession iRtpSession;
+
+    /**
+     * This stores the state of the streamer. 
+     */
+		TBool iStarted;
+
+    }; 
+
+#endif // __BTAUDIOSTREAMER_H__
\ No newline at end of file