// 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:

// @file PBASE-T_USBDI-1230.cpp

// @internalComponent

// 

//

#include "PBASE-T_USBDI-1230.h"

#include "testpolicy.h"

#include "modelleddevices.h"

#include "testliterals.h"

namespace NUnitTesting_USBDI

	{

const TUint KTotalBytesToTransfer = 1024*64+511; //64kB + 511 bytes

const TUint KHostNumReadBytes = 1024*16;

const TInt KBulkMaxTransferSize = KHostNumReadBytes + 1000;

const TInt KDeviceNumWriteBytes = 1024;

//Make these single bit values ... 

// ... so that their completion can be easily recorded in a bit mask!

const TUint32 KBulkTransferInId0 = 1<<0;

const TUint32 KBulkTransferInId1 = 1<<1; 

const TUint32 KBulkTransferInId[KMaxNumInTransfers] = {KBulkTransferInId0, KBulkTransferInId1};

const TUint32 KBulkTransferIdMask = KBulkTransferInId[0] | KBulkTransferInId[1];

const TInt KUndefinedStep	 		= -102;

const TInt KUnexpectedTransferID 	= -103;

const TInt KErrReturnedDeviceReadBytesTooVariable = -140;

const TInt KTransferSuccess	 = +100;

const TUint KRepeatedTimerInterval = 10000; //10ms

const TUint KBaseTimer = 0;

const TUint KTestTimer = 1;

const TUint KMaxTimeDiffPercentage = 60; //on inspection worst result was just under 70%

const TUint KMaxBytesWrittenDiffPercentage = 50;

_LIT(KTestCaseId,"PBASE-T_USBDI-1230");

const TFunctorTestCase<CUT_PBASE_T_USBDI_1230,TBool> CUT_PBASE_T_USBDI_1230::iFunctor(KTestCaseId);	

CUT_PBASE_T_USBDI_1230* CUT_PBASE_T_USBDI_1230::NewL(TBool aHostRole)

	{

	CUT_PBASE_T_USBDI_1230* self = new (ELeave) CUT_PBASE_T_USBDI_1230(aHostRole);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

CUT_PBASE_T_USBDI_1230::CUT_PBASE_T_USBDI_1230(TBool aHostRole)

:	CBaseBulkTestCase(KTestCaseId,aHostRole),

	iCaseStep(EInProgress)

	{

	} 

void CUT_PBASE_T_USBDI_1230::ConstructL()

	{

	BaseBulkConstructL();

	iInBuffer = HBufC8::NewL(KTestBufferLength);

	iBulkTestTimer = CBulkTestTimer::NewL(*this);	

	//Create buffer to contain multiple lots of the payload pattern

	//..so that we may grab cyclic chunks of said payload pattern

	TInt repeats = KHostNumReadBytes / (KLiteralEnglish5().Length()) + 1 + 1; //1 extra to accommodate start point plus 1 to accomodate remainder in division

	iValidateBuffer = HBufC8::NewL(KLiteralEnglish5().Length() * repeats);

	iValidateBufferPtr.Set(iValidateBuffer->Des());

	iValidateBufferPtr.Zero();

	for(TInt i=0;i<repeats;i++)

		{

		iValidateBufferPtr.Append(KLiteralEnglish5());

		}

	}

CUT_PBASE_T_USBDI_1230::~CUT_PBASE_T_USBDI_1230()

	{

	}

void CUT_PBASE_T_USBDI_1230::KillTransfers()

	{

	iInTransfer[0]->Cancel();

	iInTransfer[1]->Cancel();

	}

void CUT_PBASE_T_USBDI_1230::ExtractDeviceReadBytes()

	{

	iControlEp0->LastRequestCompletionTime( iEndTime[KTestTimer]);

	iTimingError = iTimingError == KErrNone ? CheckTimes(KBaseTimer, KTestTimer, KMaxTimeDiffPercentage) : iTimingError;

	ResetTimes(KTestTimer);

	TLex8 lex(iInBufferPtr.Left(KNumberStringLength));

	TUint32 numBytes = 0;

	User::LeaveIfError(lex.Val(numBytes, EDecimal));

	if(numBytes != 0)

		//Do not count this case - it may result from the remote resetting when all bulk transfers have completed

		{

		TUint numBytesSinceLast = numBytes - iDeviceNumBytesReadInTotal;

		iDeviceNumBytesReadInTotal = numBytes;

		iDeviceMinTimedNumBytesRead = numBytesSinceLast < iDeviceMinTimedNumBytesRead ?  numBytesSinceLast : iDeviceMinTimedNumBytesRead ;

		iDeviceMaxTimedNumBytesRead = numBytesSinceLast > iDeviceMaxTimedNumBytesRead ?  numBytesSinceLast : iDeviceMaxTimedNumBytesRead ;;

		}

	}

void CUT_PBASE_T_USBDI_1230::PostTransferAction()

	{

	switch(iTransferResult)

		{

		case KErrNone:

			//do nothing

			return;

		case KTransferSuccess:

			{

			// Indicates success - comparison is a match

			iCaseStep = EPassed;

			TTestCasePassed request;

			iTransferComplete = 0; //reset

			iControlEp0->SendRequest(request,this);

			}

			return; 

		default:

			{

			iCaseStep = EFailed;

			TTestCaseFailed request(iTransferResult,iMsg);

			iControlEp0->SendRequest(request,this);

			}

			return;

		}

	}

TInt CUT_PBASE_T_USBDI_1230::ValidatePreviousAndPerformNextTransfers(TInt aTransferId)

		{

	TUint8 index = 0;

	switch(aTransferId)

		{

		case KBulkTransferInId0:

			index = 0;

			break;

		case KBulkTransferInId1:

			index = 1;

			break;

		default:

			_LIT(lit, "TRANSFER ID OUT OF RANGE");

			User::Panic(lit, KErrArgument);

			return 0; //should never get here

		}

	if(iNumBytesExpected[index] != 0)

		{

		TPtrC8 data1(iInTransfer[index]->DataPolled());

		if(ValidateData(data1, iValidateBufferPtr.Mid(iValidationStringStartPointTransfer[index], iNumBytesExpected[index])) == EFalse)

			{

			iIsValid = EFalse;

			}

		iNumBytesExpected[index] = 0; //reset

		}

	if(iNumBytesRequestedSoFar >= KTotalBytesToTransfer)

		//if we are near the end end the other transfer will mop up remaining bytes...

		{

		return KBulkTransferInId[index];

		}

	iValidationStringStartPointTransfer[index] = iNumBytesRequestedSoFar%(KLiteralEnglish5().Length()); //PRIOR TO THIS TRANSFER

	TUint bytesLeftToRead = KTotalBytesToTransfer - iNumBytesRequestedSoFar;

	iNumBytesExpected[index] = bytesLeftToRead < KHostNumReadBytes ? bytesLeftToRead : KHostNumReadBytes;

	iNumBytesRequestedSoFar += iNumBytesExpected[index];

	iInTransfer[index]->TransferIn(KHostNumReadBytes); //rely on ZLP to complete the last 'TransferIn'

	iExpectedNextTransferNumber = 1 - iExpectedNextTransferNumber;

	return 0;

	}

void CUT_PBASE_T_USBDI_1230::RequestNumBytesSent(TUint8 aTimerIndex)

	{

	iInBufferPtr.Set(iInBuffer->Des());

	iInBufferPtr.Zero(); //reset

	iInBufferPtr.SetLength(KNumberStringLength);

	TInterfaceGetRecordedNumBytesReadInPayload request(1,1,iInBufferPtr);

	iControlEp0->SendRequest(request,this);

 	iControlEp0->LastRequestStartTime( iStartTime[aTimerIndex]);

	}

void CUT_PBASE_T_USBDI_1230::Ep0TransferCompleteL(TInt aCompletionCode)

	{

	if(aCompletionCode != KErrNone)

		{

		if(iCaseStep == EFailed)

			{// ignore error, nad catch the TestFailed method called further down.

			}

		else

			{

			TBuf<256> msg;

			KillTransfers();

			_LIT(lit, "<Error %d> Transfer to control endpoint 0 was not successful");

			msg.Format(lit,aCompletionCode);

			iCaseStep = EFailed;

			TTestCaseFailed request(aCompletionCode,msg);

			iControlEp0->SendRequest(request,this);

			return;

			}

		}

	switch(iCaseStep)

		{

		// Test case passed

		case EPassed:

			TestPassed();

			break;

		// Test case failed	

		case EFailed:

			TestFailed(KErrCompletion);

			break;

		case EGetTimerBase:

			{

			iControlEp0->LastRequestCompletionTime( iEndTime[KBaseTimer]);

			iCaseStep = ERequestRepeatedWrite;	

			TRepeatedWriteDataRequest request(1,1,KLiteralEnglish5(),KDeviceNumWriteBytes,KTotalBytesToTransfer);// EP2 means endpoint index 2 not the actual endpoint number, here the ep with 32 byte max packet size

			iControlEp0->SendRequest(request,this);

			}

			break;

		case ERequestRepeatedWrite:

			{

			iCaseStep = ETransfer;	

			iIsValid = ETrue; //innocent until proved guilty

			ValidatePreviousAndPerformNextTransfers(KBulkTransferInId[0]); //should not validate - just perform necessary transfers

			ValidatePreviousAndPerformNextTransfers(KBulkTransferInId[1]); //should not validate - just perform necessary transfers

			_LITDBG("Bulk test timer NOT instanciated");

			__ASSERT_DEBUG(iBulkTestTimer, User::Panic(lit, KErrGeneral));

			iBulkTestTimer->After(KRepeatedTimerInterval);

			}

			break;

		case ETransfer:

		// we must be getting num bytes read

			{

			ExtractDeviceReadBytes();

			//Restart timer

			_LITDBG("Bulk test timer NOT instanciated");

			__ASSERT_DEBUG(iBulkTestTimer, User::Panic(lit, KErrGeneral));

			iBulkTestTimer->After(KRepeatedTimerInterval);

			}

			break;

		case EDelayedTransferComplete:

			{

			PostTransferAction();

			}

			break;

		default:

			TestFailed(KErrUnknown);

			break;

		}

	}

void CUT_PBASE_T_USBDI_1230::TransferCompleteL(TInt aTransferId,TInt aCompletionCode)

	{

	Cancel();

	iTransferResult = KErrNone;

	switch(iCaseStep)

		{

		case ETransfer:

			if(aCompletionCode != KErrNone)

				{

				KillTransfers();

				iTransferResult = KErrCorrupt;

				_LIT(lit, "<Error %d> The transfer completed with an error.");

				iMsg.Format(lit, aCompletionCode);

				break;

				}

			if(aTransferId != KBulkTransferInId[0] && aTransferId != KBulkTransferInId[1])

				{

				iTransferComplete = 0; //reset

				iTransferResult = KUnexpectedTransferID;

				_LIT(lit, "<Error %d> Unexpected transfer ID, wanted %d or %d, got %d");

				iMsg.Format(lit, iTransferResult, KBulkTransferInId[0], KBulkTransferInId[1], aTransferId);

				break;

				}

			iTransferComplete |= ValidatePreviousAndPerformNextTransfers(aTransferId);

			if(iTransferResult==KErrNone && (iTransferComplete & KBulkTransferIdMask) == KBulkTransferIdMask)

				{

				/*

				Transfers all complete - now check validation

				*/

				iBulkTestTimer->Cancel(); //Cancel Timer 

				iTransferResult = KTransferSuccess;

				if(!iIsValid)

					{

					iTransferResult = KErrCompletion; //indicates data validation failure

					iIsValid = ETrue; //reset

					}

				if(iTimingError == KErrTooBig)

					{

					__PRINT_CONTROL_TRANSFER_TIMER_COMPARISON_WARNING

					iTransferResult = KErrTooBig;

					iTimingError = KErrNone; //reset

					}

				if(KMaxBytesWrittenDiffPercentage*iDeviceMaxTimedNumBytesRead > KPercent*iDeviceMinTimedNumBytesRead)

					{

					iTransferResult = KErrTooBig;

					iDeviceMaxTimedNumBytesRead = 0;

					iDeviceMinTimedNumBytesRead = KMaxTUint;

					}

				}

			break;

		default:

			iTransferResult = KUndefinedStep;

			_LIT(lit, "<Error %d> Undefined case step %d reached");

			iMsg.Format(lit,KUndefinedStep, iCaseStep);

			break;

		}

	if(iTransferResult == KErrReturnedDeviceReadBytesTooVariable)

		//indicates apparent device read rate validation failure

		{

		iMsg.Format(_L("<Error %d> Device APPEARS not to be reading bytes at a constant rate"), iTransferResult);

		}

	if(iTransferResult == KErrTooBig)

		//indicates timing validation failure

		{

		iMsg.Format(_L("<Error %d> Timer comparison showed too great a difference in transfer times between the time taken by EP0 transfers with and without a bulk transfer"), iTransferResult);

		}

	if(iTransferResult == KErrCompletion)

		//indicates data validation failure

		{

		_LIT(lit, "<Error %d> Client has posted an error discovered in validation");

		iMsg.Format(lit, iTransferResult);

		}

	if(iTransferResult != KErrNone)

		{	

		KillTransfers(); //harmless if tranfers are all done

		if(!iControlEp0->IsActive())

			{

			PostTransferAction();

			}

		else

			{

			iCaseStep = EDelayedTransferComplete; //so that we move forward when the EP0 transfer has completed

			}

		}

	}

void CUT_PBASE_T_USBDI_1230::DeviceInsertedL(TUint aDeviceHandle)

	{

	Cancel();

	TBuf<256> msg;

	TInt err = KErrNone;

	if(BaseBulkDeviceInsertedL(aDeviceHandle, EFalse) == EDeviceConfigurationError)

		// Prepare for response from control transfer to client

		{

		err = KErrGeneral;

		_LIT(lit, "Base class DeviceInsertedL failed");

		msg.Format(lit);

		}

	else

		{

		if(SetUpInterfaceAndPipesL(aDeviceHandle, 2) == EDeviceConfigurationError)

			// Prepare for response from control transfer to client

			{

			err = KErrGeneral;

			_LIT(lit, "Base class SetUpInterfaceAndPipes for Interface 2 failed");

			msg.Format(lit);

			}

		else

			{

			iInTransfer[0] = new (ELeave) CBulkTransfer(iTestPipeInterface1BulkIn,iUsbInterface1,KBulkMaxTransferSize,*this,KBulkTransferInId[0]);

			iInTransfer[1] = new (ELeave) CBulkTransfer(iTestPipeInterface1BulkIn,iUsbInterface1,KBulkMaxTransferSize,*this,KBulkTransferInId[1]);

			// Initialise the descriptors for transfer		

			err = iUsbInterface1.InitialiseTransferDescriptors();

			if(err != KErrNone)

				{

				_LIT(lit, "<Error %d> Unable to initialise transfer descriptors");

				msg.Format(lit,err);

				}

			}

		}

	if(err != KErrNone)

		{

		iCaseStep = EFailed;

		TTestCaseFailed request(err,msg);

		iControlEp0->SendRequest(request,this);

		}

	else

		{

		iCaseStep = EGetTimerBase;

		iDeviceMinTimedNumBytesRead = KMaxTUint;

		iDeviceMaxTimedNumBytesRead = 0;

		iDeviceNumBytesReadInTotal = 0;

		RequestNumBytesSent(KBaseTimer);

		}

	}

void CUT_PBASE_T_USBDI_1230::HandleBulkTestTimerFired()

	{