mtpfws/mtpfw/dataproviders/devdp/src/cmtpgetnumobjects.cpp
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     1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include <mtp/tmtptyperequest.h>
       
    17 #include <mtp/mmtpdataproviderframework.h>
       
    18 #include <mtp/mmtpobjectmgr.h>
       
    19 #include <mtp/mmtpdataprovider.h>
       
    20 #include <mtp/cmtpdataproviderplugin.h>
       
    21 
       
    22 #include "cmtpdataprovidercontroller.h"
       
    23 #include "cmtpdataprovider.h"
       
    24 
       
    25 #include "cmtpgetnumobjects.h"
       
    26 #include "mtpdevicedpconst.h"
       
    27 #include "mtpdevdppanic.h"
       
    28 
       
    29 /**
       
    30 Verification data for GetNumObjects request
       
    31 */
       
    32 const TMTPRequestElementInfo KMTPGetNumObjectsPolicy[] = 
       
    33     {
       
    34         {TMTPTypeRequest::ERequestParameter1, EMTPElementTypeStorageId, EMTPElementAttrNone, 1, KMTPStorageAll, 0},
       
    35         {TMTPTypeRequest::ERequestParameter2, EMTPElementTypeFormatCode, EMTPElementAttrNone, 1, 0, 0},
       
    36         {TMTPTypeRequest::ERequestParameter3, EMTPElementTypeObjectHandle, EMTPElementAttrDir, 2, KMTPHandleAll, 0}
       
    37     };
       
    38 
       
    39 /**
       
    40 Two-phase construction method
       
    41 @param aPlugin	The data provider plugin
       
    42 @param aFramework	The data provider framework
       
    43 @param aConnection	The connection from which the request comes
       
    44 @return a pointer to the created request processor object
       
    45 */    
       
    46 MMTPRequestProcessor* CMTPGetNumObjects::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection)
       
    47 	{
       
    48 	CMTPGetNumObjects* self = new (ELeave) CMTPGetNumObjects(aFramework, aConnection);
       
    49 	CleanupStack::PushL(self);
       
    50 	self->ConstructL();
       
    51 	CleanupStack::Pop();
       
    52 	return self;
       
    53 	}
       
    54 
       
    55 /**
       
    56 Destructor
       
    57 */	
       
    58 CMTPGetNumObjects::~CMTPGetNumObjects()
       
    59 	{	
       
    60     iSingletons.Close();
       
    61 	}
       
    62 /**
       
    63 Standard c++ constructor
       
    64 */	
       
    65 CMTPGetNumObjects::CMTPGetNumObjects(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection) :
       
    66     CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPGetNumObjectsPolicy)/sizeof(TMTPRequestElementInfo), KMTPGetNumObjectsPolicy)
       
    67 	{
       
    68 
       
    69 	}
       
    70     
       
    71 /**
       
    72 Second phase constructor.
       
    73 */
       
    74 void CMTPGetNumObjects::ConstructL()
       
    75     {
       
    76     iSingletons.OpenL();
       
    77     }
       
    78 
       
    79 TMTPResponseCode CMTPGetNumObjects::CheckRequestL()
       
    80 	{
       
    81 	TMTPResponseCode responseCode = CMTPRequestProcessor::CheckRequestL();
       
    82 	if(responseCode == EMTPRespCodeOK)
       
    83 		{
       
    84 		TUint32 formatCode = Request().Uint32(TMTPTypeRequest::ERequestParameter2);
       
    85 		if(formatCode != 0 && !IsSupportedFormatL(formatCode))
       
    86 			{
       
    87 			responseCode = EMTPRespCodeInvalidObjectFormatCode;
       
    88 			}
       
    89 		}
       
    90 	return responseCode;	
       
    91 	}
       
    92 	
       
    93 	
       
    94 /**
       
    95 GetNumObjects request handler
       
    96 */	
       
    97 void CMTPGetNumObjects::ServiceL()
       
    98 	{
       
    99 	TMTPObjectMgrQueryParams params(Request().Uint32(TMTPTypeRequest::ERequestParameter1), Request().Uint32(TMTPTypeRequest::ERequestParameter2), Request().Uint32(TMTPTypeRequest::ERequestParameter3));
       
   100 	TUint32 count = iFramework.ObjectMgr().CountL(params);		
       
   101 	SendResponseL(EMTPRespCodeOK, 1, &count);	
       
   102 	}
       
   103 
       
   104 /**
       
   105 Check if the format code is supported by the current installed data providers
       
   106 */	
       
   107 TBool CMTPGetNumObjects::IsSupportedFormatL(TUint32 aFormatCode)
       
   108 	{
       
   109 	TBool supported(EFalse);
       
   110 		
       
   111 	CMTPDataProviderController& dps(iSingletons.DpController());
       
   112 	const TInt count(dps.Count());
       
   113 	for (TInt i(0); ((i < count) && (!supported)); i++)
       
   114 		{						
       
   115 		CMTPDataProvider& dp = dps.DataProviderByIndexL(i);
       
   116 		if (dp.DataProviderId() != dps.ProxyDpId())
       
   117 			{
       
   118 			supported = (
       
   119 			    dp.Supported(EObjectCaptureFormats, aFormatCode) || 
       
   120 			    dp.Supported(EObjectPlaybackFormats, aFormatCode));
       
   121 			}			
       
   122 		}
       
   123 	return supported;	
       
   124 	}
       
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