examples/RemoteConn/MtpDataProviderExample/src/mtpdataproviderpluginexample.cpp

/*
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modification, are permitted provided that the following conditions are met:

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  list of conditions and the following disclaimer.
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  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description: 
*/

#include <bautils.h>
#include <mtp/mmtpconnection.h>
#include <mtp/mtpprotocolconstants.h>
#include <mtp/mmtpdataproviderframework.h>
#include <mtp/mmtpstoragemgr.h>
#include <mtp/cmtpobjectmetadata.h>
#include <mtp/mmtpobjectmgr.h>

#include "mtpdataproviderpluginexample.h"

#include "mtpexamplerequestprocessor.h"
#include "cmtpexampledprequestprocessor.h"

#include "cmtpexampledpconst.h"


// Class constants.
static const TInt KMTPExampleDpSessionGranualrity = 3;


TAny* CMTPExampleDataProvider::NewL(TAny* aParams)
        {
        CMTPExampleDataProvider* self = new (ELeave) CMTPExampleDataProvider(aParams);
        CleanupStack::PushL(self);
        self->ConstructL();
        CleanupStack::Pop(self);
        return self;
        }
        
CMTPExampleDataProvider::CMTPExampleDataProvider(TAny* aParams)
        :CMTPDataProviderPlugin(aParams),
        iActiveProcessors(KMTPExampleDpSessionGranualrity),
    iActiveProcessor(-1)
        {
        
        }

CMTPExampleDataProvider::~CMTPExampleDataProvider()
        {
    TUint count(iActiveProcessors.Count());
    while (count--)
        {
        iActiveProcessors[count]->Release();
        }
    iActiveProcessors.Close();
        }
        

void CMTPExampleDataProvider::Cancel()
        {
        }

void CMTPExampleDataProvider::Supported(TMTPSupportCategory aCategory, RArray<TUint>& aArray) const
    {
    switch (aCategory) 
        {        
        case EEvents:
            break;
        case EObjectPlaybackFormats:
        case EObjectCaptureFormats:
            break;
        case EObjectProperties:
            break; 
    
        case EOperations:
            {
            TInt count(sizeof(KMTPExampleDpSupportedOperations) / sizeof(KMTPExampleDpSupportedOperations[0]));
            for (TInt i(0); (i < count); i++)
                {
                aArray.Append(KMTPExampleDpSupportedOperations[i]);
                }   
            }
            break;  
   
        default:   
            break;
        }
    }
void CMTPExampleDataProvider::SupportedL(TMTPSupportCategory aCategory, CDesCArray& /*aStrings*/) const
        {
        switch (aCategory) 
        {
        case EFolderExclusionSets:
            break;
        case EFormatExtensionSets:
            break;
        default:
            break;
        }
        }

void CMTPExampleDataProvider::StartObjectEnumerationL(TUint32 aStorageId)
    {
    Framework().ObjectEnumerationCompleteL(aStorageId);

    }
    
void CMTPExampleDataProvider::StartStorageEnumerationL()
    {
    Framework().StorageEnumerationCompleteL();
    }

void CMTPExampleDataProvider::ProcessEventL(const TMTPTypeEvent& aEvent, MMTPConnection& aConnection)   
        {
    TInt idx = LocateRequestProcessorL(aEvent, aConnection);

    if (idx != KErrNotFound)
        {
        iActiveProcessors[idx]->HandleEventL(aEvent);
        }
        }

void CMTPExampleDataProvider::ProcessNotificationL(TMTPNotification aNotification, const TAny* aParams)
    {
    switch (aNotification)
        {
    case EMTPSessionClosed:
        SessionClosedL(*reinterpret_cast<const TMTPNotificationParamsSessionChange*>(aParams));
        break;
        
    case EMTPSessionOpened:
        SessionOpenedL(*reinterpret_cast<const TMTPNotificationParamsSessionChange*>(aParams));
        break;
        
    default:
        // Ignore all other notifications.
        break;
        }
    }
    
void CMTPExampleDataProvider::ProcessRequestPhaseL(TMTPTransactionPhase aPhase, const TMTPTypeRequest& aRequest, MMTPConnection& aConnection)
        {
    //Check if the request is handled.
    TInt idx(LocateRequestProcessorL(aRequest, aConnection));
    MMTPExampleDpRequestProcessor* processor(iActiveProcessors[idx]);
    //Handle the request
    TBool result(processor->HandleRequestL(aRequest, aPhase));
    if (result)    //destroy the processor
        {
        processor->Release();
        iActiveProcessors.Remove(idx);
        }
        }

void CMTPExampleDataProvider::SessionClosedL(const TMTPNotificationParamsSessionChange& aSession)       
        {
    TInt count = iActiveProcessors.Count();
    while(count--)
        {
        MMTPExampleDpRequestProcessor* processor = iActiveProcessors[count];
        TUint32 sessionId = processor->SessionId();
        if((sessionId == aSession.iMTPId) && (processor->Connection().ConnectionId() == aSession.iConnection.ConnectionId()))
            {
            iActiveProcessors.Remove(count);
            if (count == iActiveProcessor)
                {
                iActiveProcessorRemoved = ETrue;
                }
            else
                {
                processor->Release();
                }
            }
        } 
        }

void CMTPExampleDataProvider::SessionOpenedL(const TMTPNotificationParamsSessionChange& /*aSession*/)   
        {
        }
        
TAny* CMTPExampleDataProvider::GetExtendedInterface(TUid /*aInterfaceUid*/)     
        {
        return NULL;
        }

void CMTPExampleDataProvider::ConstructL()      
        {

      
        }

TInt CMTPExampleDataProvider::LocateRequestProcessorL(const TMTPTypeRequest& aRequest, MMTPConnection& aConnection)
        {
    TInt idx(KErrNotFound);
    //Get the Count of the request supported.
    TInt count(iActiveProcessors.Count());
    //Not found create and then append to the array.
    if (idx == KErrNotFound)
        {
        MMTPExampleDpRequestProcessor* processor = MTPExampleDpProcessor::CreateL
                                                 (Framework(), aRequest, aConnection);
        CleanupReleasePushL(*processor);
        iActiveProcessors.AppendL(processor);
        CleanupStack::Pop(processor);
        idx = count;
        }
    return idx;
        }

TInt CMTPExampleDataProvider::LocateRequestProcessorL(const TMTPTypeEvent& aEvent, MMTPConnection& aConnection)
        {
    TInt idx(KErrNotFound);
    TInt count(iActiveProcessors.Count());
    for (TInt i(0); (i < count); i++)
        {
        if (iActiveProcessors[i]->Match(aEvent, aConnection))
            {
            idx = i;
            break;
            }
        }    
    return idx;   
        }
        
        

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