author | hgs |
Fri, 03 Sep 2010 18:38:04 +0800 | |
changeset 49 | c20dd21d1eb4 |
parent 31 | a26669f87b46 |
permissions | -rw-r--r-- |
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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/** |
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@file |
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@internalComponent |
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*/ |
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#ifndef CMTPUSBEPBASE_H |
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#define CMTPUSBEPBASE_H |
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#include <e32std.h> |
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#include <e32base.h> |
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#include <d32usbc.h> |
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class CMTPUsbConnection; |
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/** |
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Defines the USB MTP device class endpoint data transfer controller base class. |
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@internalComponent |
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*/ |
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class CMTPUsbEpBase : public CActive |
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{ |
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public: |
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virtual ~CMTPUsbEpBase(); |
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TEndpointNumber EndpointNumber() const; |
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TUint Id() const; |
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void SetMaxPacketSizeL(TUint aSize); |
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void Stall(); |
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void StallClear(); |
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TBool Stalled() const; |
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static TInt LinearOrder(const CMTPUsbEpBase& aL, const CMTPUsbEpBase& aR); |
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void ResumeReceiveDataL(MMTPType& aSink); |
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void CancelReceiveL(TInt aReason); |
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void CancelSendL(TInt aReason); |
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void FlushRxDataL(); |
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void FlushBufferedRxDataL(); |
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void FlushOnePacketL(); |
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protected: |
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CMTPUsbEpBase(TUint aId, TPriority aPriority, CMTPUsbConnection& aConnection); |
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virtual void ConstructL(); |
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CMTPUsbConnection& Connection() const; |
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void ReceiveDataL(MMTPType& aSink); |
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virtual void ReceiveDataCompleteL(TInt aError, MMTPType& aSink); |
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void SendDataL(const MMTPType& aSource); |
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virtual void SendDataCompleteL(TInt aError, const MMTPType& aSource); |
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protected: // From CActive |
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void DoCancel(); |
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private: // From CActive |
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TInt RunError(TInt aError); |
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void RunL(); |
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private: |
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TInt32 DataStreamDirection() const; |
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void ResetReceiveDataStream(); |
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void ResetSendDataStream(); |
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void ResumeReceiveDataStreamL(); |
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void ProcessSendDataStreamL(); |
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void SetStreamState(TInt aState); |
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TBool ValidateUSBHeaderL(); |
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void InitiateFirstChunkReceiveL(); |
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void ProcessFirstReceivedChunkL(); |
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private: // Owned |
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/** |
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The data stream states. |
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*/ |
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enum TState |
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{ |
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/** |
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Both send and receive data streams are inactive. |
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*/ |
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EIdle = 0x00000000, |
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/** |
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Both send and receive data streams are stalled. |
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*/ |
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EStalled = 0x0F000000, |
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|
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/** |
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The receive data stream is active. |
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*/ |
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EReceivingState = 0x40000000, |
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EReceiveInitialising = 0x40000001, |
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EReceiveInProgress = 0x40000002, |
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EReceiveCompleting = 0x40000003, |
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EReceiveComplete = 0x40000004, |
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/** |
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The send data stream is active. |
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*/ |
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ESendingState = 0x80000000, |
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ESendInitialising = 0x80000001, |
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ESendInProgress = 0x80000002, |
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ESendCompleting = 0x80000003, |
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ESendComplete = 0x80000004, |
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EStateDirection = 0xF0000000 |
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}; |
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/** |
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The active data stream chunk status. |
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*/ |
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TInt iChunkStatus; |
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/** |
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The internal endpoint identifier. |
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*/ |
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TUint iId; |
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/** |
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The residual packet data buffer. |
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*/ |
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RBuf8 iPacketBuffer; |
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|
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/** |
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The maximum bulk-in endpoint size. |
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*/ |
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TUint iPacketSizeMax; |
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|
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/** |
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The receive data stream commit flag. |
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*/ |
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TBool iReceiveDataCommit; |
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|
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/** |
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The receive data stream chunk data buffer. |
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*/ |
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TPtr8 iReceiveChunkData; |
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|
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/** |
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The receive data stream data pointer. |
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*/ |
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TPtr8 iReceiveData; |
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|
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/** |
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The send data stream chunk data. |
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*/ |
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TPtrC8 iSendChunkData; |
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|
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/** |
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The send data stream data pointer. |
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*/ |
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TPtrC8 iSendData; |
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|
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/** |
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The data stream state variable. |
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*/ |
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TInt32 iState; |
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|
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/** |
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A flag to tell if the receive stream is the first chunk. |
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*/ |
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TBool iIsFirstChunk; |
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|
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/** |
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The amount of data received. |
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*/ |
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TUint64 iDataCounter; |
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|
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/** |
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The amount of data expected. |
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*/ |
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TUint64 iDataLength; |
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|
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private: // Not owned |
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|
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/** |
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The MTP USB device class transport connection which controls the endpoint. |
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*/ |
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CMTPUsbConnection& iConnection; |
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|
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/** |
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The receive data stream sink buffer |
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*/ |
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MMTPType* iReceiveDataSink; |
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|
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/** |
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The send data stream source buffer |
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*/ |
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const MMTPType* iSendDataSource; |
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}; |
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|
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#endif // CMTPUSBEPBASE_H |