sl@0: // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // This is the body of the MMF recognizer utility class
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <badesca.h>
sl@0: 
sl@0: #include <mmf/common/mmfcontrollerpluginresolver.h>
sl@0: #include "RecMmfUtilBody.h"
sl@0: #include <mmf/server/mmfdatasourcesink.hrh>
sl@0: 
sl@0: 
sl@0: // MMF Recognizer Utility class body constructor
sl@0: CMmfRecognizerUtil::CBody::CBody():
sl@0: 	CActive(CActive::EPriorityStandard)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CMmfRecognizerUtil::CBody::~CBody()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	iEcomSession.Close();
sl@0: 	iControllers.ResetAndDestroy();
sl@0: 	}
sl@0: 
sl@0: // Request ECom to be notified when interface implementation registration 
sl@0: // data changes so that we can refresh the list of interface implementations.
sl@0: void CMmfRecognizerUtil::CBody::StartNotification()
sl@0: 	{
sl@0: 	iEcomSession.NotifyOnChange(iStatus);
sl@0: 	SetActive();
sl@0: 	}
sl@0: 
sl@0: // build a list of interface implementation objects
sl@0: void CMmfRecognizerUtil::CBody::BuildControllerListL()
sl@0: 	{
sl@0: 	iControllers.ResetAndDestroy();
sl@0: 	CMMFControllerPluginSelectionParameters* cSelect = 
sl@0: 		CMMFControllerPluginSelectionParameters::NewLC();
sl@0: 	
sl@0: 	CMMFFormatSelectionParameters* fSelect = 
sl@0: 		CMMFFormatSelectionParameters::NewLC();
sl@0: 
sl@0: 	cSelect->SetRequiredPlayFormatSupportL(*fSelect);
sl@0: 
sl@0: 	// Set the media ids
sl@0: 	RArray<TUid> mediaIds;
sl@0: 	CleanupClosePushL(mediaIds);
sl@0: 
sl@0: 	User::LeaveIfError(mediaIds.Append(KUidMediaTypeAudio));
sl@0: 	User::LeaveIfError(mediaIds.Append(KUidMediaTypeVideo));
sl@0: 	cSelect->SetMediaIdsL(mediaIds, CMMFPluginSelectionParameters::EAllowOtherMediaIds);
sl@0: 																	
sl@0: 	cSelect->ListImplementationsL(iControllers);
sl@0: 
sl@0: 	// Clean up
sl@0: 	CleanupStack::PopAndDestroy(3, cSelect);// mediaIds, fSelect, cSelect
sl@0: 	}
sl@0: 
sl@0: void CMmfRecognizerUtil::CBody::ConstructL()
sl@0: 	{
sl@0: 	BuildControllerListL();
sl@0: 
sl@0: 	CActiveScheduler::Add(this);
sl@0: 
sl@0: 	iEcomSession = REComSession::OpenL();
sl@0: 
sl@0: 	// request notification from ECOM of any file system changes
sl@0: 	StartNotification();
sl@0: 	}
sl@0: 
sl@0: void CMmfRecognizerUtil::CBody::RunL()
sl@0: 	{
sl@0: 	BuildControllerListL();
sl@0: 	StartNotification();
sl@0: 	}
sl@0: 
sl@0: void CMmfRecognizerUtil::CBody::DoCancel()
sl@0: 	{
sl@0: 	if (iStatus == KRequestPending)
sl@0: 		iEcomSession.CancelNotifyOnChange(iStatus);
sl@0: 	}
sl@0: 
sl@0: /* 	Determine whether the supplied data header on its own is recognized,
sl@0: 	or the data header plus the file suffix together are recognized,
sl@0: 	and if so return the associated MIME type.
sl@0: 	
sl@0: 	@param	aFileName
sl@0: 			The name of the file
sl@0: 	@param	aImageData
sl@0: 			A descriptor containing the header
sl@0: 	@param	aMimeType
sl@0: 			A user-supplied descriptor in which the MIME type is returned
sl@0: 	@leave	KErrUnderflow 
sl@0: 			Not enough data in descriptor to identify whether it is supported
sl@0: 			by any plugin.
sl@0: 	@leave	This method may also leave with one of the system-wide error codes.
sl@0: 	@return	EMatchNone if a match was not found.
sl@0: 			EMatchData if a data match was found.
sl@0: 			EMatchName if a data and file suffix match was found.
sl@0: 	@post	If recognized, the caller's descriptor is filled with the MIME types
sl@0: */
sl@0: CMmfRecognizerUtil::TMatchLevel CMmfRecognizerUtil::CBody::GetMimeTypeL(const TDesC& aFileName, const TDesC8& aImageData, TDes8& aMimeType)
sl@0: 	{
sl@0: 	CMmfRecognizerUtil::TMatchLevel matchLevel = EMatchNone;
sl@0: 
sl@0: 	//Get the suffix
sl@0: 	TParse fileName;
sl@0: 	
sl@0: 	// aFileName's length could be greater than KMaxFileName
sl@0: 	// so don't use TFileName here
sl@0: 	TPtrC fName(aFileName);
sl@0: 	if (aFileName.Match(_L("::*")) == 0)
sl@0:  		{
sl@0: 		fName.Set(aFileName.Mid(2));
sl@0:  		}
sl@0: 	User::LeaveIfError(fileName.Set(fName, NULL, NULL));
sl@0: 
sl@0: 	HBufC8* fileSuffix = NULL;
sl@0: 	if(fileName.ExtPresent())
sl@0: 		{
sl@0: 		TPtrC suffixPtr(fileName.Ext());
sl@0: 		fileSuffix = HBufC8::NewLC(suffixPtr.Length());
sl@0: 		fileSuffix->Des().Copy(suffixPtr);
sl@0: 		}
sl@0: 
sl@0: 	// loop through every supported Format of every controller 
sl@0: 	// until we find one that matches the data header on its own,
sl@0: 	// or the data header plus the file suffix together
sl@0: 	for (TInt nController = 0, countControllers = iControllers.Count(); nController < countControllers; nController++)
sl@0: 		{
sl@0: 		CMMFControllerImplementationInformation* controllerImpInfo = iControllers[nController];
sl@0: 
sl@0: 		for (TInt nPlayFormat = 0, countFormats = controllerImpInfo->PlayFormats().Count(); nPlayFormat < countFormats; nPlayFormat++)
sl@0: 			{
sl@0: 			const CMMFFormatImplementationInformation* formatImpInfo = 
sl@0: 				controllerImpInfo->PlayFormats()[nPlayFormat];
sl@0: 			if (formatImpInfo->SupportsHeaderDataL(aImageData))
sl@0: 				{
sl@0: 				const CDesC8Array& supportedMimeTypes = formatImpInfo->SupportedMimeTypes();
sl@0: 				if (supportedMimeTypes.Count() > 0)
sl@0: 					{
sl@0: 					CMmfRecognizerUtil::TMatchLevel previousMatchLevel = matchLevel;
sl@0: 					if(fileSuffix && formatImpInfo->SupportsFileExtension(*fileSuffix))
sl@0: 						matchLevel = EMatchName;
sl@0: 					else
sl@0: 						matchLevel = EMatchData;
sl@0: 					// Use first data match but update if suffix match is found
sl@0: 					if(matchLevel!=previousMatchLevel)
sl@0: 						aMimeType = supportedMimeTypes[0]; // just return the first mime type in the array
sl@0: 					}
sl@0: 				}
sl@0: 			if(matchLevel==EMatchName || (!fileSuffix && matchLevel==EMatchData))
sl@0: 				break;
sl@0: 			}
sl@0: 		if(matchLevel==EMatchName || (!fileSuffix && matchLevel==EMatchData))
sl@0: 			break;
sl@0: 		}
sl@0: 
sl@0: 	if(fileSuffix)
sl@0: 		CleanupStack::PopAndDestroy(fileSuffix);
sl@0: 
sl@0: 	return matchLevel;
sl@0: 	}
sl@0: 
sl@0: // Static factory constructor. Uses two phase
sl@0: // construction and leaves nothing on the cleanup stack
sl@0: // @leave KErrNoMemory
sl@0: // @return A pointer to the newly created CMmfRecognizerUtilBody object
sl@0: CMmfRecognizerUtil::CBody* CMmfRecognizerUtil::CBody::NewL()
sl@0: 	{
sl@0: 	CBody* self=new (ELeave) CBody();   
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: // Get all the mime types supported by MMF
sl@0: // @param	aMimeTypes
sl@0: //          A caller-supplied array of descriptors.
sl@0: // @leave	This method may leave with one of the system-wide error codes.
sl@0: // @post    The caller's array is filled with the supported MIME types
sl@0: void CMmfRecognizerUtil::CBody::GetMimeTypesL(CDesC8Array* aMimeTypes)
sl@0: 	{
sl@0: 
sl@0: 	CMMFControllerPluginSelectionParameters* cSelect = 
sl@0: 												CMMFControllerPluginSelectionParameters::NewLC();
sl@0: 	CMMFFormatSelectionParameters* fSelect = CMMFFormatSelectionParameters::NewLC();
sl@0: 
sl@0: 	// Set the play format selection parameters to be blank  
sl@0: 	//  - format support Is only retrieved if requested.
sl@0: 	cSelect->SetRequiredPlayFormatSupportL(*fSelect);
sl@0: 
sl@0: 	// Set the media ids
sl@0: 	RArray<TUid> mediaIds;
sl@0: 	CleanupClosePushL(mediaIds);	
sl@0: 	User::LeaveIfError(mediaIds.Append(KUidMediaTypeVideo));
sl@0: 	User::LeaveIfError(mediaIds.Append(KUidMediaTypeAudio));
sl@0: 	cSelect->SetMediaIdsL(mediaIds, CMMFPluginSelectionParameters::EAllowOtherMediaIds);
sl@0: 																		   
sl@0: 	// Array to hold all the controller plugins
sl@0: 	RMMFControllerImplInfoArray controllers; 
sl@0: 
sl@0: 	CleanupResetAndDestroyPushL(controllers);
sl@0: 	cSelect->ListImplementationsL(controllers);
sl@0: 
sl@0: 	for (TInt nController = 0, controllerCount = controllers.Count(); nController < controllerCount; nController++)
sl@0: 		{
sl@0: 		for (TInt nPlayFormat = 0, formatCount = controllers[nController]->PlayFormats().Count(); nPlayFormat < formatCount; nPlayFormat++)
sl@0: 			{
sl@0: 			const CMMFFormatImplementationInformation* formatImpInfo = controllers[nController]->PlayFormats()[nPlayFormat];
sl@0: 			const CDesC8Array& supportedMimeTypes = formatImpInfo->SupportedMimeTypes();
sl@0: 			for (TInt nMimeType = 0, mimeTypeCount = supportedMimeTypes.Count(); nMimeType < mimeTypeCount; nMimeType++)
sl@0: 				{
sl@0: 				aMimeTypes->AppendL(supportedMimeTypes[nMimeType]);
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 					
sl@0: 	// Clean up
sl@0: 	CleanupStack::PopAndDestroy(4, cSelect);//controllers, mediaIds, fSelect, cSelect
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: