--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/examples/convert1/convert1_dev.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,133 @@
+// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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:
+// Shared Chunks in its implementation.
+// 
+//
+
+/**
+ @file Kernel side interfaces to example data converter device driver which uses
+ @publishedPartner
+ @prototype 9.1
+*/
+
+#ifndef __CONVERT1_DEV_H__
+#define __CONVERT1_DEV_H__
+
+/**
+  Logical Device (factory class) for 'Convert1'
+*/
+class DConvert1Factory : public DLogicalDevice
+	{
+public:
+	DConvert1Factory();
+	~DConvert1Factory();
+	//	Inherited from DLogicalDevice
+	virtual TInt Install();
+	virtual void GetCaps(TDes8& aDes) const;
+	virtual TInt Create(DLogicalChannelBase*& aChannel);
+	// Resource handling methods
+	TInt ClaimResource(TInt& aResourceId);
+	void ReleaseResource(TInt aResourceId);
+private:
+	NFastMutex iResourceMutex;	/**< Mutex to protect access to iResourceFlags */
+	TUint iResourceFlags;		/**< Bitfield of flags representing device resources available for use.
+								     I.e. iResourceFlags&(1<<resourceId) is true if resource 'resourceId' is free. */
+	};
+
+/**
+  Class representing a buffer of data
+*/
+class DChunkBuffer
+	{
+public:
+	DChunkBuffer();
+	~DChunkBuffer();
+	TInt Create(TInt aSize);
+	void Destroy();
+	TInt SetMaxSize(TInt aMaxSize);
+	TInt Open(TAny* aAddress, TInt aSize, TBool aWrite=EFalse);
+	TInt Open(TInt aChunkHandle, TInt aOffset, TInt aSize, TBool aWrite=EFalse);
+	void Close();
+	TInt Copy(TAny* aAddress, TInt aSize);
+private:
+	TInt SetPhysicalAddresses(TInt aSize);
+public:
+	DChunk* iChunk;				/**< The chunk which contains the buffer */
+	TInt iChunkOffset;			/**< Offset, in bytes, of buffer start within the chunk */
+	TInt iMaxSize;				/**< Maximum size of buffer n bytes */
+	TLinAddr iChunkBase;		/**< Linear address in kernel process for the start of the chunk  */
+	TUint32 iChunkMapAttr;		/**< MMU mapping attributes for chunk */
+	TPhysAddr iPhysicalAddress;	/**< Physical address of buffer. KPhysAddrInvalid if buffer not physically contiguous */
+	TPhysAddr* iPhysicalPages;	/**< List of physical addresses for buffer pages. 0 if buffer is physically contiguous */
+	};
+
+/**
+  Logical Channel class for 'Convert1'
+*/
+class DConvert1Channel : public DLogicalChannelBase
+	{
+public:
+	DConvert1Channel(DConvert1Factory* aFactory);
+	virtual ~DConvert1Channel();
+	//	Inherited from DObject
+	virtual TInt RequestUserHandle(DThread* aThread, TOwnerType aType);
+	// Inherited from DLogicalChannelBase
+	virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);
+	virtual TInt Request(TInt aReqNo, TAny* a1, TAny* a2);
+private:
+	// Panic reasons
+	enum TPanic
+		{
+		ERequestFromWrongThread=1,
+		ERequestAlreadyPending
+		};
+	// Implementation for the differnt kinds of messages sent through RBusLogicalChannel
+	TInt DoControl(TInt aFunction, TAny* a1, TAny* a2);
+	TInt DoRequest(TInt aNotReqNo, TAny* a1, TAny* a2);
+	TInt DoCancel(TUint aMask);
+	// Methods for configuration
+	TInt GetConfig(TDes8* aConfigBuf);
+	TInt SetConfig(const TDesC8* aConfigBuf,RConvert1::TBufferInfo* aBufferInfo);
+	// Methods for capturing images
+	void ConvertDes(const TDesC8* aSrc,TRequestStatus* aRequestStatus);
+	void ConvertChunk(const RConvert1::TConvertArgs* aSrcArgs,TRequestStatus* aRequestStatus);
+	void ConvertInChunk(TInt aSize,TRequestStatus* aRequestStatus);
+	void ConvertCancel();
+	void ConvertComplete(TInt aResult);
+	static void ConvertDfcTrampoline(TAny* aSelf);
+	void ConvertDfc();
+	// Methods which program the convert hardware
+	void DoConvertStart(TInt aOffset,TInt aSize);
+	void DoConvertCancel();
+private:
+	DConvert1Factory* iFactory;	/**< Pointer to device driver factory object */
+	TInt iResourceId;			/**< The id of the device hardware resource owned by this channel */
+
+	NFastMutex iConvertMutex;	/**< Mutex to protect access to driver state */
+
+	DChunkBuffer* iSource;		/**< Buffer containing the converter's input data */
+	DChunkBuffer iInBuffer;		/**< Buffer into which client supplied data can be copied */
+	DChunkBuffer iOutBuffer;	/**< Buffer containing the converter's output data */
+	DChunkBuffer iClientBuffer;	/**< Buffer representing client supplied chunk data */
+
+	DThread* iClient;			/**< The single client thread for this channel */
+	TRequestStatus* iConvertRequestStatus;	/**< The request status for client ConvertImage request */
+
+	RConvert1::TConfig iConfig;	/**< The driver configuration information */
+
+	NTimer iConvertTimer;		/**< Timer used to emulate image capture hardware */
+	};
+
+#endif
+