--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bluetoothengine/btaudiostreamer/inc/btaudiostreamsendersbc.h	Mon Jan 18 20:28:57 2010 +0200
@@ -0,0 +1,187 @@
+/*
+* Copyright (c) 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 class implements the SBC codec specific data handling. 
+*
+*/
+
+
+
+
+#ifndef __BTAUDIOSTREAMSENDERSBC_H__
+#define __BTAUDIOSTREAMSENDERSBC_H__
+ 
+#include "btaudiostreamsender.h" 
+
+/**
+ *  SBC codec specific implementation of CBTAudioStreamSender base class 
+ *
+ *  This class wraps the handling of SBC frames and it can place the 
+ *  media packet header in place. 
+
+ *  @lib btaudiostreamer.lib
+ *  @since S60 v3.1 
+ */
+NONSHARABLE_CLASS(CBTAudioStreamSenderSBC) : public CBTAudioStreamSender
+    {
+    public:
+    static CBTAudioStreamSenderSBC* NewL(MBTAudioStreamSenderObserver& aObserver, RRtpSession& aSession);
+    virtual ~CBTAudioStreamSenderSBC();
+
+    private:
+    CBTAudioStreamSenderSBC(MBTAudioStreamSenderObserver& aObserver, RRtpSession& aSession);
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method places to received buffer into the send packet in SBC specific way. 
+     *
+     * @since S60 v3.1
+     * @param aBuffer contains the SBC frames. 
+     */
+    virtual TInt AddBufferToSendPacket(const TDesC8& aBuffer); 
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method places the SBC codec specific media packet header in its place. 
+     *
+     * @since S60 v3.1
+     * @param void. 
+     * @return a Symbian OS wide error code. 
+     */
+    virtual TInt AddHeaderToSendPacket(TPtr8& aPayloadDesC); 
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method does the cleanup work after the packet has been sent. 
+     *
+     * @since S60 v3.1
+     * @param void. 
+     * @return a Symbian OS wide error code. 
+     */
+    virtual TInt PacketSendingCompleted(TPtr8& aPayloadDesC); 
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method is used for calculating the required packet length. 
+     * It takes the header's into account and tries to fit as many frames 
+     * to the packet that can fit to the outgoing MTU. 
+     *
+     * @since S60 v3.1
+     * @param aOutboundMTUSize The MTU size for outgoing L2CAP link. 
+     * @param aFrameLength  The length of one SBC frame. 
+     */
+    virtual TInt CalculatePacketLength(TUint aOutboundMTUSize, TUint aFrameLength); 
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method prepares the class for sending packets. 
+     *
+     * @since S60 v3.1
+     * @param void. 
+     * @return a Symbian OS wide error code. 
+     */
+    virtual TInt InitSender(RRtpSendPacket& aSendPacket, TPtr8& aPayloadDesC, const TUint aTargetBitrate); 
+
+    /**
+     * From CBTAudioStreamSender.
+     * This method corrects the timestamp value when incoming buffers can't fit in one sendpacket. 
+     *
+     * @since S60 v5.0
+     * @param void. 
+     * @return void.
+     */
+		virtual void AdjustTimestamp(TInt64 &aTimestamp); 
+
+    /**
+     * 
+     * This method calculates the playing time of one frame in microseconds. 
+     * Information is used also internally for correcting the timestamp values. 
+     *
+     * @since S60 v5.0
+     * @param void. 
+     * @return a duration of one frame. 
+     */
+    virtual TUint CalculateFrameDuration(const TUint aFrameLength, const TUint aTargetBitrate); 
+		
+	/**
+     * This method returns the maximum number of frames in one outgoing packet.  
+     *
+     * @since S60 Timebox 9.2
+     * @return number of frames in one send packet. 
+     */
+	virtual TUint MaxFramesPerPacket(); 
+
+	
+    private: 
+
+    /**
+     * Stores the corrected timestamp value. 
+     */
+		TInt64 iTimestampOfFirstFrameInSendPacket; 
+
+    /**
+     * Stores the length of one SBC frame. 
+     */
+    TInt iFrameLength; 
+
+    /**
+     * Stores the length of one SBC frame. Used when the frame length changes. 
+     */
+    TInt iNewFrameLength; 
+
+    /**
+     * Stores the duration of one SBC frame in microseconds. Used for correcting the timestamps in long buffers. 
+     */
+    TInt iDurationOfFrame; 
+
+    /**
+     * Used for calculating how many frames can fit in one SendPacket. 
+     */
+		TInt iSpaceNeededForBuffer; 
+		
+    /**
+     * Stores the number of frames we have moved from buffer to packet so far. 
+     * This variable is needed when the whole buffer can't fit in the current packet. 
+     */
+    TInt iNumOfFramesAlreadyMoved; 
+
+    /**
+     * Stores the maximum number of frames that we can place in one packet. 
+     */
+    TInt iMaxNumOfFrames; 
+    
+    /**
+     * This stores the number of frames in send packet. 
+     * This information is needed for A2DP media packet header. 
+     */
+    TInt iNumOfFramesInSendPacket; 
+
+    /**
+     * This stores the end position of the SendPacket's payload. 
+     */
+    const TUint8 *iPtrEndOfPayload; 
+
+    /**
+     * This stores the number of frames that haven't been sent yet. It's needed if 
+     * there's more incoming frames than can fit in single SendPacket. 
+     */
+    TInt iNumOfFramesLeftInBuffer; 
+
+    /**
+     * This tells if it is time to start using the passed in timestamp as reference. 
+     */
+		TBool iTimestampChangeFlag; 
+
+    };
+
+#endif // __BTAUDIOSTREAMSENDERSBC_H__