--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mmfenh/enhancedmediaclient/Plugins/FileSource/src/FileSource.cpp Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,1381 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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: Implementation of FileSource.
+* Version : %version: bh1mmcf#5.1.7 %
+*
+*/
+
+
+#include <f32file.h>
+#include <e32std.h>
+#include <mmfdatabuffer.h>
+#include <mmfutilities.h>
+#include <mmf/common/mmfcontroller.h>
+#include <mmfpaniccodes.h>
+#include "FileMultimediaSource.h"
+#include "FileDataSource.h"
+#include "MmffilePriv.h"
+#include "FileAccess.h"
+#include "SinkQueueItem.h"
+#include "FileDataSourceCommon.h"
+#include <MultimediaDataSourceEvents.h>
+#include "FileSourceUid.h"
+
+
+#ifdef _DEBUG
+#define DEBPRN1(str) RDebug::Print(str);
+#define DEBPRN2(str, val1) RDebug::Print(str, val1);
+#define DEBPRN3(str, val1, val2) RDebug::Print(str, val1, val2);
+#define DEBPRN4(str, val1, val2, val3) RDebug::Print(str, val1, val2, val3);
+#define DEBPRN5(str, val1, val2, val3, val4) RDebug::Print(str, val1, val2, val3, val4);
+#else
+#define DEBPRN1(str)
+#define DEBPRN2(str, val1)
+#define DEBPRN3(str, val1, val2)
+#define DEBPRN4(str, val1, val2, val3)
+#define DEBPRN5(str, val1, val2, val3, val4)
+#endif // _DEBUG
+
+void Panic(TMMFFilePanicCode aPanicCode)
+ {
+ _LIT(KMMFFilePanicCategory, "MMFFile");
+ User::Panic(KMMFFilePanicCategory, aPanicCode);
+ }
+
+/**
+* Constructs a CTransferBufferCopy
+*
+* @return CTransferBufferCopy*
+*/
+CTransferBufferCopy* CTransferBufferCopy::NewL(TInt aMaxLength)
+ {
+ CTransferBufferCopy* self = new (ELeave) CTransferBufferCopy(aMaxLength);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+/**
+* Second phase constructor for CTransferBufferCopy
+*
+* @return void
+*/
+void CTransferBufferCopy::ConstructL()
+ {
+ iBuffer = static_cast<TUint8*>(User::AllocL(iMaxLength));
+ iBufferDes.Set(iBuffer,0,iMaxLength);
+ }
+
+
+
+CFileSource* CFileSource::NewL(TUid aType )
+ {
+ DEBPRN1(_L("CFileSource::NewL"));
+ CFileSource* self = new (ELeave) CFileSource(aType);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+CFileSource::CFileSource(TUid aType)
+: MDataSource(aType)
+ {
+ iInitData = NULL;
+ }
+
+CFileSource::~CFileSource(void)
+ {
+ delete iInitData;
+ iInitData = NULL;
+ }
+
+void CFileSource::ConstructL (void)
+ {
+ }
+
+// From MDataSource begins
+TUid CFileSource::DataSourceType() const
+ {
+ return KMmfFileSource;
+ }
+
+
+TFourCC CFileSource::SourceDataTypeCode(TMediaId /*aMediaId*/ )
+ {
+ TFourCC fourCC;
+ return iMultiMediaSource->GetDataTypeCode(fourCC);
+ }
+
+TInt CFileSource::SetSourceDataTypeCode(TFourCC aSourceFourCC,
+ TMediaId /*aMediaId*/ )
+ {
+ iMultiMediaSource->SetDataTypeCode(aSourceFourCC);
+ return KErrNone;
+ }
+
+void CFileSource::FillBufferL(CMMFBuffer* aBuffer,
+ MDataSink* aConsumer,
+ TMediaId /*aMediaId*/ )
+ {
+ // Requires that iFile is open for read.
+ // Reads data from iFile into aBuffer
+ //TInt status(KErrNone);
+ if ((!aConsumer) || (!aBuffer))
+ User::Leave(KErrArgument);
+
+ iMultiMediaSource->AppendBufferToSinkQueue(aBuffer,NULL,aConsumer,EFalse);
+ iMultiMediaSource->ServiceFillBuffer();
+ }
+
+void CFileSource::BufferEmptiedL(CMMFBuffer* /*aBuffer*/ )
+ {
+ User::Leave(KErrUnknown);
+ }
+
+TBool CFileSource::CanCreateSourceBuffer()
+ {
+ return EFalse;
+ }
+
+CMMFBuffer* CFileSource::CreateSourceBufferL(TMediaId /*aMediaId*/,
+ TBool &/*aReference*/ )
+ {
+ return NULL;
+ }
+
+TInt CFileSource::SourceThreadLogon( MAsyncEventHandler& /*aEventHandler*/ )
+ {
+ return iMultiMediaSource->Open();
+ }
+
+void CFileSource::SourceThreadLogoff()
+ {
+ iMultiMediaSource->Close();
+ }
+
+void CFileSource::SourcePrimeL()
+ {
+ DEBPRN1(_L("CFileSource::SourcePrimeL"));
+ User::LeaveIfError(iMultiMediaSource->Prime());
+ }
+
+void CFileSource::SourcePlayL()
+ {
+ DEBPRN1(_L("CFileSource::SourcePlayL"));
+ User::LeaveIfError(iMultiMediaSource->Play());
+ }
+
+void CFileSource::SourceStopL()
+ {
+ DEBPRN1(_L("CFileSource::SourceStopL"));
+ User::LeaveIfError(iMultiMediaSource->Stop());
+ }
+
+
+void CFileSource::ConstructSourceL(const TDesC8& aInitData )
+ {
+ if(iInitData)
+ {
+ delete iInitData;
+ iInitData = NULL;
+ }
+ iInitData = aInitData.AllocL();
+ }
+
+void CFileSource::SourceCustomCommand(TMMFMessage& aMessage)
+ {
+ iMultiMediaSource->SourceCustomCommand(aMessage);
+ }
+
+void CFileSource::SetMultimediaSource(CFileMultimediaSource& aMultimediaSource)
+ {
+ iMultiMediaSource = &aMultimediaSource;
+ }
+
+TDesC8& CFileSource::GetInitData()
+ {
+ return *iInitData;
+ }
+
+
+
+
+EXPORT_C CFileMultimediaSource* CFileMultimediaSource::NewL(MDataSource& aDataSource)
+ {
+ DEBPRN1(_L("CFileMultimediaSource::NewL"));
+ CFileMultimediaSource* self = new (ELeave) CFileMultimediaSource(aDataSource);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+
+
+/**
+Destructor.
+*/
+CFileMultimediaSource::~CFileMultimediaSource()
+ {
+ DEBPRN1(_L("CFileMultimediaSource::~CFileMultimediaSource() "));
+
+ delete iInitData;
+
+ delete iFile;
+ EmptySinkQueue();
+ iHandle.Close();
+ iFsSession.Close();
+ delete iFileName;
+ delete iFileExt;
+ delete iFilePath;
+ delete iFileDrive;
+
+
+ delete iCAFParameters;
+ delete iSinkQueue;
+
+ if(iMessage)
+ {
+ if(!iMessage->IsCompleted())
+ {
+ iMessage->Complete(KErrDied);
+ delete iMessage;
+ iMessage = NULL;
+ }
+ }
+ // Get rid of everything in RArray's & close them.
+ iRequests.ResetAndDestroy();
+ iTransferBufferCopies.ResetAndDestroy();
+ DEBPRN1(_L("CFileMultimediaSource::~CFileMultimediaSource() exit"));
+ }
+
+/**
+Protected constructor.
+
+The default implementation is empty.
+*/
+CFileMultimediaSource::CFileMultimediaSource(
+ MDataSource& aDataSource )
+ : iSnkItemsCount(0),
+ iSnkBytes(0),
+ iDownloadSize(0),
+ iTransferRate(0),
+ //iConsumer(NULL),
+ iBufferedDataSize(0),
+ iDLFileSize(0),
+ isDownloadComplete(EFalse),
+ iFileSize(0),
+ iParentDataSource(&aDataSource)
+ {
+ iMessage = NULL;
+ iFile = NULL;
+ iState = ECLOSED;
+ iObserver = NULL;
+ iInitData = NULL;
+ }
+
+/**
+Constructs an CFileMultimediaSource MDataSource.
+
+@return A pointer to the new CFileMultimediaSource data source.
+*/
+/*MDataSource* CFileMultimediaSource::NewSourceL()
+ {
+ CFileMultimediaSource* self = new (ELeave) CFileMultimediaSource( KMmfFileSource ) ;
+ return STATIC_CAST( MDataSource*, self ) ;
+ }*/
+
+
+/**
+Perform source construction dependant on the source construction
+initialisation data aInitData.
+
+@param aInitData
+The TPckg<TMMFFileParams> descriptor package containing the file name and full path.
+*/
+void CFileMultimediaSource::ConstructL()
+ {
+ CFileSource* fileSource = static_cast<CFileSource*>(iParentDataSource);
+ iInitData = (fileSource->GetInitData()).AllocL();
+ fileSource->SetMultimediaSource(*this);
+ ConstructL(*iInitData, ESourceMode);
+ iSinkQueue = new(ELeave) TSglQue<CSinkQueueItem>(_FOFF(CSinkQueueItem, iLink));
+ }
+
+
+/**
+Protected constructor.
+
+Extracts the initialisation data provided by the calling functions: ConstructSourceL() and
+ConstructSinkL(). Creates a file server session and sets up file name. If there is a file name and
+it cannot be found this function leaves. If there is no file name the function leaves. Does not
+attempt to open the file or check whether the file exists.
+
+If aInitData contains a TMMFFileHandleParams instead of TMMFFileParams, the source/sink is constructed from
+the file handle provided by the caller
+
+@param aInitData
+Initialisation data packaged in a TMMFFileParams or in a TMMFFileHandleParams (File Handle)
+*/
+void CFileMultimediaSource::ConstructL(const TDesC8& aInitData,TMMFileMode aFileMode)
+ {
+ User::LeaveIfError(iFsSession.Connect());
+ // on IPCv2 we auto attach
+ User::LeaveIfError(iFsSession.ShareAuto());
+
+ User::LeaveIfError(iFsSession.ShareProtected());
+
+ TBool fileInit = EFalse;
+ HBufC* filename = NULL;
+ TBool filenamePushed = EFalse;
+
+ iCAFParameters = new (ELeave) CCAFParameters;
+ TBool drmContent = EFalse;
+ RDesReadStream stream(aInitData);
+ CleanupClosePushL(stream);
+
+ TUid initUid;
+
+ initUid = TUid::Uid(stream.ReadInt32L());
+
+ if (initUid == KMMFileHandleSourceUid)
+ {
+ TPckgBuf<RFile*> fileptr;
+ stream.ReadL(fileptr);
+
+ iHandle.Duplicate(*fileptr());
+
+ TInt length;
+ length = stream.ReadInt32L();
+ if (length>0)
+ {
+ iCAFParameters->iUniqueId = HBufC::NewL(length);
+ TPtr16 ptr = iCAFParameters->iUniqueId->Des();
+ stream.ReadL(ptr, length);
+ }
+ iFileHandle = ETrue;
+ filename = HBufC::NewMaxL(KMaxFileName);
+ TPtr ptr = filename->Des();
+ iHandle.Name(ptr);
+ fileInit = ETrue;
+ drmContent = ETrue;
+
+ iCAFParameters->iEnableUI = stream.ReadInt32L();
+ }
+
+ else if (initUid == KMMFileSourceUid)
+ {
+ TInt length;
+ length = stream.ReadInt32L();
+ filename = HBufC::NewMaxLC(length);
+ TPtr ptr = filename->Des();
+ stream.ReadL(ptr, length);
+
+ length = stream.ReadInt32L();
+ if (length>0)
+ {
+ iCAFParameters->iUniqueId = HBufC::NewMaxL(length);
+ ptr.Set(iCAFParameters->iUniqueId->Des());
+ stream.ReadL(ptr, length);
+ }
+ CleanupStack::Pop(filename);
+
+ fileInit = ETrue;
+ drmContent = ETrue;
+ iFileHandle = EFalse;
+ iCAFParameters->iEnableUI = stream.ReadInt32L();
+ }
+ else
+ {
+ // TODO If the UID is unknown we should reject, but currently
+ // code also used for older calls that just supply filename.
+ // User::Leave(KErrNotSupported);
+ }
+
+ CleanupStack::PopAndDestroy(&stream);
+
+ if (!fileInit && aInitData.Length() == sizeof(TMMFFileHandleParams))
+ {
+ TMMFFileHandleParams params;
+ TPckgC<TMMFFileHandleParams> config(params);
+ config.Set(aInitData);
+ params = config();
+
+
+ if (params.iUid == KFileHandleUid)
+ {
+ fileInit = ETrue;
+ User::LeaveIfError(iHandle.Duplicate(*params.iFile));
+ TInt pos = 0;
+ // make sure the duplicate handle is at the start of the file - the usage of the file handle really requires this
+ User::LeaveIfError(iHandle.Seek(ESeekStart, pos));
+ iFileHandle = ETrue;
+ filename = HBufC::NewMaxLC(KMaxFileName);
+ filenamePushed = ETrue;
+ TPtr ptr = filename->Des();
+ User::LeaveIfError(iHandle.Name(ptr));
+ }
+ }
+
+ if (!fileInit) // do old case as last resort
+ {
+ TMMFFileParams params;
+ TPckgC<TMMFFileParams> config(params);
+ config.Set(aInitData);
+ params = config();
+
+ filename = params.iPath.AllocL();
+ fileInit = ETrue;
+ }
+
+ if (!filenamePushed)
+ {
+ // from now on it is assumed pushed.
+ CleanupStack::PushL(filename);
+ }
+
+ TParse parser ;
+ User::LeaveIfError(parser.Set(*filename, NULL, NULL));
+ CleanupStack::PopAndDestroy(filename);
+ if ( !( parser.NamePresent() ) && !( parser.ExtPresent() ) )
+ User::Leave( KErrBadName ) ;
+
+ iFullFileName.Copy( parser.FullName() ) ;
+ iFileName = parser.Name().AllocL() ;
+ iFileExt = parser.Ext().AllocL() ;
+ iFilePath = parser.Path().AllocL() ;
+ iFileDrive = parser.Drive().AllocL() ;
+
+ // in order to simulate old behaviour we are not passing error out
+ // but will try to create Content again during PrimeL()
+ if (fileInit && drmContent && aFileMode==ESourceMode)
+ {
+ TInt contentError;
+ if (iFileHandle)
+ {
+ TRAP(contentError,
+ iFile = CContentFile::NewL(iHandle, UniqueId(), iCAFParameters->iEnableUI);
+ );
+ }
+ else
+ {
+ // Open for read-only access
+ TRAP(contentError,
+ iFile = CContentFile::NewL(iFsSession, iFullFileName, UniqueId(), EFileShareAny, iCAFParameters->iEnableUI);
+ );
+ }
+ }
+ }
+
+
+/**
+@deprecated
+
+Returns an RFile handle to the current file.
+
+If there is no current file, one is created. If the file exists then it is opened with read access
+if it is read only, write access otherwise. If the file does not exist then it is opened with
+write access.
+
+@leave KErrNotReady
+The file is not open.
+
+@return A handle to the current file.
+*/
+RFile& CFileMultimediaSource::FileL()
+ {
+ if (!iFile)
+ User::Leave(KErrNotReady);
+ if (iFileHandle)
+ return iHandle;
+ else
+ return iFile->FileL();
+ }
+
+/**
+Returns the file name of the current file.
+
+Note: This will give the wrong answer if the file is renamed!
+
+@return The FileName (without extension).
+*/
+const TDesC& CFileMultimediaSource::FileName() const
+ {
+ return *iFileName ;
+ }
+
+/**
+Returns the extension of the current file.
+
+Note: This will give the wrong answer if the file is renamed!
+
+@return The File Extension.
+*/
+const TDesC& CFileMultimediaSource::Extension() const
+ {
+ return *iFileExt ;
+ }
+
+/**
+Returns the path of the current file.
+
+Note: This will give the wrong answer if the file is renamed!
+
+@return The FilePath (without filename and extension)
+*/
+const TDesC& CFileMultimediaSource::FilePath() const
+ {
+ return *iFilePath ;
+ }
+
+/**
+Returns the drive on which the current file is located.
+
+Note: This will give the wrong answer if the file is renamed!
+
+@return The FileDrive (drive letter only, without path, filename and extension).
+*/
+const TDesC& CFileMultimediaSource::FileDrive() const
+ {
+ return *iFileDrive ;
+ }
+
+/**
+Returns the full name of the current file.
+
+Note: This will give the wrong answer if the file is renamed!
+
+@return The file name (full filename including drive letter, without path, filename and extension).
+*/
+const TFileName CFileMultimediaSource::FullName() const
+ {
+ return iFullFileName;
+ }
+
+/**
+Returns the uniqueID associated with this content. If no uniqueID has been provided, a null
+descriptor will be provided
+
+@return The UniqueID
+*/
+const TDesC& CFileMultimediaSource::UniqueId() const
+ {
+ if (iCAFParameters->iUniqueId)
+ return *(iCAFParameters->iUniqueId);
+ else
+ return KNullDesC;
+ }
+
+/**
+Obtains a CTransferBufferCopy from iTransferBufferCopies that is
+at least as big as that required.
+
+There is no need to put the pointer returned by this method onto the CleanupStack
+as it will have already been placed into iTransferBufferCopies.
+
+@param aMaxLength
+The size required.
+
+@return A pointer to a valid CTransferBufferCopy.
+*/
+CTransferBufferCopy* CFileMultimediaSource::ObtainCopyOfTransferBufferL(TInt aMaxLength)
+ {
+ //find a free transfer buffer copy of the right size
+ TInt firstFree = -1;
+ CTransferBufferCopy* transBufCopyToUse = NULL;
+
+ for(TInt cnt=0; cnt < iTransferBufferCopies.Count(); cnt++)
+ {
+ if(!iTransferBufferCopies[cnt]->InUse())
+ {
+ //record the first free entry, we may remove this
+ //if entries in iTransferBufferCopies > KAcceptableTransferBufferCopiesSize
+ if(firstFree == -1)
+ firstFree = cnt;
+
+ if(iTransferBufferCopies[cnt]->MaxLength() >= aMaxLength)
+ {
+ transBufCopyToUse = iTransferBufferCopies[cnt];
+
+ //Set the MaxLength. This will ensure that the copy acts the same as
+ //the original Transfer buffer, eg. file server will throw KErrOverflow
+ transBufCopyToUse->ReUse(aMaxLength);
+ break;
+ }
+ }
+ }
+
+ //If we failed to find a suitable entry, we need to create a new one
+ if(!transBufCopyToUse)
+ {
+ //Firstly, should we re-cycle an existing entry?
+ //There must be entries in the array, a free entry must have been found,
+ //the size of the array must be beyond the water mark where we want to start
+ //cycling free entries.
+ if((iTransferBufferCopies.Count() > 0) &&
+ (firstFree != -1) &&
+ (iTransferBufferCopies.Count() > KAcceptableTransferBufferCopiesSize))
+ {
+ delete iTransferBufferCopies[firstFree];
+ iTransferBufferCopies.Remove(firstFree);
+
+ transBufCopyToUse = CTransferBufferCopy::NewL(aMaxLength);
+ CleanupStack::PushL(transBufCopyToUse);
+ User::LeaveIfError(iTransferBufferCopies.Insert(transBufCopyToUse,firstFree));
+
+ CleanupStack::Pop();
+ }
+ else
+ {
+ #ifdef _DEBUG
+ if(iTransferBufferCopies.Count() > KMaximumTransferBufferCopiesSize)
+ {
+ User::Panic(_L("iTransferBufferCopies grew too large in CFileMultimediaSource"),KErrTooBig);
+ }
+ #endif
+
+ transBufCopyToUse = CTransferBufferCopy::NewL(aMaxLength);
+ CleanupStack::PushL(transBufCopyToUse);
+ User::LeaveIfError(iTransferBufferCopies.Append(transBufCopyToUse));
+
+ CleanupStack::Pop();
+ }
+ }
+
+ return transBufCopyToUse;
+ }
+
+
+/**
+Stores a request in an array.
+
+CReadWriteRequests are stored in the array iRequests.
+This function takes ownership and places the request in the array.
+It also checks the array for completed requests and removes them.
+
+@param aRequest
+The request to store.
+*/
+void CFileMultimediaSource::StoreRequestL( CReadWriteRequest* aRequest )
+ {
+ // add aRequest to iRequests
+ User::LeaveIfError( iRequests.Append( aRequest ) ) ;
+
+ // Clear out any completed requests
+ for ( TInt ii = 0 ; ii < iRequests.Count() ; ii++ )
+ {
+ if (iRequests[ii]->Completed())
+ {
+ CReadWriteRequest* request = iRequests[ii];
+ delete request;
+
+ iRequests.Remove(ii);
+ ii--;
+ }
+ }
+ }
+
+
+/**
+Cancels outstanding requests.
+
+CReadWriteRequests are stored in the array iRequests.
+This function cancels any outstanding requests and removes them
+from iRequests.
+*/
+void CFileMultimediaSource::CancelRequests()
+ {
+ // Clear out any completed requests
+ for ( TInt ii = 0 ; ii < iRequests.Count() ; ii++ )
+ {
+ CReadWriteRequest* request = iRequests[ii];
+ delete request;
+ iRequests.Remove(ii);
+ ii--;
+ }
+ }
+
+/**
+Evaluates a given intent against the rights associated with the file.
+
+The rights are not updated by this function call.
+
+@param aIntent
+The intent to evaluate.
+
+@return An error code indicating if the function call was successful. KErrNone on success, otherwise
+another of the system-wide error codes.
+*/
+TInt CFileMultimediaSource::EvaluateIntent(ContentAccess::TIntent aIntent)
+ {
+ if (!iFile)
+ {
+ return KErrNotReady;
+ }
+
+ return iFile->EvaluateIntent(aIntent);
+ }
+
+/**
+Evaluates and executes a given intent against the rights associated with the file.
+
+The rights object is updated after calling this function.
+
+@param aIntent
+The intent to evaluate.
+
+@return An error code indicating if the function call was successful. KErrNone on success, otherwise
+another of the system-wide error codes.
+*/
+TInt CFileMultimediaSource::ExecuteIntent(ContentAccess::TIntent aIntent)
+ {
+ if (!iFile)
+ {
+ return KErrNotReady;
+ }
+
+ return iFile->ExecuteIntent(aIntent);
+ }
+
+/**
+Returns whether the file is protected.
+
+@return A boolean indicating if the file is protected. ETrue if the file is protected.
+*/
+TInt CFileMultimediaSource::GetDRMProtection(TBool& aIsProtected)
+ {
+ TInt err(KErrNone);
+ if (!iFile)
+ {
+ return KErrNotReady;
+ }
+
+ TRAP(err,aIsProtected = iFile->IsProtected());
+ return err;
+ }
+
+TInt CFileMultimediaSource::SetAgentProperty(ContentAccess::TAgentProperty aProperty, TInt aValue)
+ {
+ if (!iFile)
+ {
+ return KErrNotReady;
+ }
+
+ return iFile->SetAgentProperty(aProperty, aValue);
+ }
+
+
+TInt CFileMultimediaSource::GetSeekingSupport( TBool& aSeekSupport )
+ {
+ aSeekSupport = ETrue;
+ return KErrNone;
+ };
+
+TInt CFileMultimediaSource::GetRandomSeekingSupport(TBool& aSeekSupport )
+ {
+ aSeekSupport = ETrue;
+ return KErrNone;
+ };
+
+TInt CFileMultimediaSource::Seek(TUint aPosInBytes)
+ {
+ if (!iFile)
+ {
+ return KErrNotReady;
+ }
+
+ return iFile->Seek(ESeekStart, aPosInBytes);
+ };
+
+/*
+* Returns ETrue if the request can safely be deleted.
+*/
+
+TBool CReadWriteRequest::Completed()
+ {
+ return iCompleted ;
+ }
+
+TInt CReadWriteRequest::SetStatus(TBool aStatus)
+ {
+ iCompleted = aStatus;
+ return KErrNone;
+ }
+
+TBool CReadWriteRequest::SourceType()
+ {
+ return iSourceType ;
+ }
+
+
+/*
+* Returns the data member of CMMFDataBuffer or CMMFTransferBuffer (as TPtr8)
+*
+*/
+TDes8& CReadWriteRequest::BufferDes()
+ {
+ if(iTransferBufferCopy)
+ return iTransferBufferCopy->Des();
+ else
+ {
+ //reset iBufferDes in case iBuffer has changed...
+ iBufferDes = &(STATIC_CAST(CMMFDataBuffer*, iBuffer)->Data());
+ return *iBufferDes;
+ }
+ }
+
+const TDesC8& CReadWriteRequest::BufferDesC()
+ {
+ if(iTransferBufferCopy)
+ return iTransferBufferCopy->Des();
+ else
+ return BufferDes();
+ }
+
+CMMFBuffer* CReadWriteRequest::Buffer()
+ {
+ return iBuffer;
+ }
+
+TAny* CReadWriteRequest::GetSinkOrSource()
+ {
+ return iSinkOrSource;
+ }
+
+/*
+* Destructor.
+*/
+CReadWriteRequest::~CReadWriteRequest()
+ {
+ Cancel();
+ if(iTransferBufferCopy)
+ iTransferBufferCopy->SetInUse(EFalse);
+ }
+
+/*
+* Allows owning class access to SetActive()
+*/
+void CReadWriteRequest::SetActive()
+ {
+ CActive::SetActive() ;
+ }
+
+/*
+* For the moment at least... Canceled requests may be deleted
+*/
+void CReadWriteRequest::DoCancel()
+ {
+ iCompleted = ETrue ;
+ }
+
+/*
+* Called when errors in RunL force Leave. For the moment just mark the request deletable
+*/
+TInt CReadWriteRequest::RunError( TInt aError )
+ {
+ //RunL can leave.
+ iCompleted = ETrue ;
+ iError = aError; //keep this error internally for now
+ return KErrNone ;
+ }
+
+/*
+* On completion of read request call back to the MDataSink
+*/
+void CReadRequest::RunL()
+ {
+ //Copy the data from the normal buffer into the Transfer buffer
+ if(iTransferBufferCopy)
+ {
+ //must specify the size here as the dest may be smaller than the source.
+ TDes8& destDesc = STATIC_CAST(CMMFDataBuffer*, iBuffer)->Data();
+ destDesc.Copy(iTransferBufferCopy->Des().Left(destDesc.MaxLength()));
+
+ iTransferBufferCopy->SetInUse(EFalse);
+ }
+
+ STATIC_CAST(CFileMultimediaSource*,iParent)->ReadRequestStatus(STATIC_CAST(CReadWriteRequest*,this),iStatus);
+ }
+
+ // From CMultimediaDataSource begins
+TInt CFileMultimediaSource::SetObserver( MMultimediaDataSourceObserver& aObserver )
+ {
+ TInt status(KErrNone);
+ iObserver = &aObserver;
+ return status;
+ }
+
+TInt CFileMultimediaSource::GetObserver( MMultimediaDataSourceObserver*& aObserver )
+ {
+ TInt status(KErrNone);
+ aObserver = iObserver;
+ return status;
+ }
+
+void CFileMultimediaSource::Event( TUid aEvent )
+ {
+ if( aEvent == KMultimediaDataSourceEventBitRateChanged )
+ {
+ if(iObserver)
+ {
+ iObserver->GetBitRate( iObserverBitRate );
+ }
+ TPckgBuf<TFileDataSourceEvent> bitRatePckg;
+ bitRatePckg().iBitRate = iObserverBitRate;
+ bitRatePckg().iType = EFileBitRateChanged;
+
+ if(iMessage)
+ {
+ iMessage->WriteDataToClient(bitRatePckg);
+ iMessage->Complete(KErrNone);
+ }
+ }
+ }
+
+TInt CFileMultimediaSource::SetDataTypeCode(TFourCC aSourceFourCC )
+ {
+ TInt status(KErrNone);
+ iSourceFourCC = aSourceFourCC;
+ return status;
+ }
+
+TInt CFileMultimediaSource::GetDataTypeCode(TFourCC& aSourceFourCC )
+ {
+ TInt status(KErrNone);
+ aSourceFourCC = iSourceFourCC;
+ return status;
+ }
+
+TInt CFileMultimediaSource::GetSize( TUint& aSize )
+ {
+ TInt err = KErrNone;
+ aSize = iFileSize;
+ return err;
+ }
+
+TInt CFileMultimediaSource::Open()
+ {
+ TInt status(KErrNotReady);
+ DEBPRN1(_L("CFileMultimediaSource::Open"));
+ switch ( iState )
+ {
+ case ECLOSED:
+ StateChanged(ESTOPPED);
+ status = KErrNone;
+ break;
+ case ESTOPPED:
+ case EPRIMED:
+ case EEXECUTING:
+ case EBUFFERING:
+ default:
+ DEBPRN2(_L("CFileMultimediaSource::Open[Illegal cmd on state[%d]]"), iState );
+ break;
+ };
+ return status;
+ }
+
+TInt CFileMultimediaSource::Close()
+ {
+ TInt status(KErrNone);
+ iHandle.Close();
+ iFsSession.Close();
+
+ StateChanged(ECLOSED);
+ // Clear app buffers
+ EmptySinkQueue();
+ iSnkBytes = 0;
+ // Clear observer buffers
+ return status;
+ }
+
+TInt CFileMultimediaSource::Prime()
+ {
+ TInt status(KErrNotReady);
+ DEBPRN1(_L("CFileMultimediaSource::Prime"));
+ switch ( iState )
+ {
+ case ESTOPPED:
+
+ // don't reopen file if already open
+ if (!iFile)
+ {
+ if (iFileHandle)
+ {
+ TRAPD(err,iFile = CContentFile::NewL(iHandle, UniqueId(), iCAFParameters->iEnableUI));
+ if(err)
+ return err;
+ }
+ else
+ {
+ // Open for read-only access
+ TRAPD(err,iFile = CContentFile::NewL(iFsSession, iFullFileName, UniqueId(), EFileShareAny, iCAFParameters->iEnableUI));
+ if(err)
+ return err;
+ }
+ }
+
+ if(iFile)
+ {
+ iFile->Size(iFileSize);
+ }
+
+ StateChanged(EPRIMED);
+ status = KErrNone;
+ break;
+ case EPRIMED:
+ status = KErrNone;
+ break;
+ case ECLOSED:
+ case EEXECUTING:
+ case EBUFFERING:
+ default:
+ DEBPRN2(_L("CFileMultimediaSource::Prime[Illegal cmd on state[%d]]"), iState );
+ break;
+ }
+ return status;
+ }
+
+TInt CFileMultimediaSource::Play()
+ {
+ TInt status(KErrNotReady);
+ DEBPRN1(_L("CFileMultimediaSource::Play"));
+ switch ( iState )
+ {
+ case EPRIMED:
+ StateChanged(EEXECUTING);
+
+ while ( !iSinkQueue->IsEmpty() )
+ {
+ status = ServiceFillBuffer();
+ }
+
+ status = KErrNone;
+ break;
+ case EEXECUTING:
+ case EBUFFERING:
+ status = KErrNone;
+ // No op
+ break;
+ case ECLOSED:
+ case ESTOPPED:
+ default:
+ DEBPRN2(_L("CFileMultimediaSource::Play[Illegal cmd on state[%d]]"), iState );
+ break;
+ };
+ return status;
+ }
+
+TInt CFileMultimediaSource::Stop()
+ {
+ TInt status(KErrNotReady);
+ DEBPRN1(_L("CFileMultimediaSource::Stop"));
+ switch ( iState )
+ {
+ case EPRIMED:
+ case EEXECUTING:
+ case EBUFFERING:
+ {
+ TInt pos = 0;
+ CancelRequests();
+ delete iFile;
+ iFile = NULL;
+ iSnkBytes=pos;
+ EmptySinkQueue();
+ StateChanged(ESTOPPED);
+ status = KErrNone;
+ }
+ break;
+ case ESTOPPED:
+ case ECLOSED:
+ default:
+ DEBPRN2(_L("CFileMultimediaSource::Stop[Illegal cmd on state[%d]]"), iState );
+ status = KErrNone;
+ break;
+ };
+ return status;
+ }
+
+TInt CFileMultimediaSource::FillBuffer( CMMFBuffer* aBuffer )
+ {
+ // Requires that iFile is open for read.
+ // Reads data from iFile into aBuffer
+ TInt status(KErrNone);
+ if (!aBuffer)
+ return KErrArgument;
+
+ if (!iFile)
+ return KErrNotReady;
+
+ AppendBufferToSinkQueue(aBuffer,iObserver,NULL,EFalse);
+
+ status = ServiceFillBuffer();
+
+ return status;
+ }
+
+
+TAny* CFileMultimediaSource::CustomInterface( TUid /*aInterfaceUid*/ )
+ {
+ return NULL;
+ }
+
+TInt CFileMultimediaSource::AppendBufferToSinkQueue( CMMFBuffer* aBuffer,
+ MMultimediaDataSourceObserver* aObserver,
+ MDataSink* aConsumer,TBool aTop )
+ {
+ TInt status(KErrNone);
+
+ DEBPRN2(_L("CFileMultimediaSource::AppendBufferToSinkQueue() Buffer[%x]"), aBuffer );
+ // Add observer buffer to queue
+ CMMFDataBuffer* dest = static_cast<CMMFDataBuffer*>( aBuffer );
+ TDes8& destBufferDes = dest->Data();
+
+ CSinkQueueItem* request(NULL);
+
+ TRAP( status, request = CSinkQueueItem::NewL( aBuffer, aObserver,aConsumer) );
+ if ( status == KErrNone )
+ {
+ if(aTop)
+ iSinkQueue->AddFirst(*request);
+ else
+ iSinkQueue->AddLast(*request);
+
+ iSnkItemsCount++;
+
+ DEBPRN3(_L("CFileMultimediaSource::AppendBufferToQueue[ReqSize[%d]SnkItems[%d]]"), \
+ aBuffer->RequestSize(), iSnkItemsCount );
+ }
+ return status;
+ }
+
+void CFileMultimediaSource::SourceCustomCommand(TMMFMessage& aMessage)
+ {
+ //TInt err(KErrNone);
+ switch ( aMessage.Function() )
+ {
+ case EGetFileSourceEvent:
+ {
+ TPckgBuf<TFileDataSourceEvent> statePckg;
+ aMessage.ReadData1FromClient(statePckg);
+ DEBPRN3(_L("CFileMultimediaSource::SourceCustomCommand() Client State[%d] SourceState[%d]"), statePckg().iState, iState);
+
+ if(statePckg().iType == EFileBitRateChanged)
+ {
+ if(iObserver)
+ {
+ iObserver->GetBitRate( iObserverBitRate );
+ }
+ statePckg().iBitRate = iObserverBitRate;
+ aMessage.WriteDataToClient(statePckg);
+ aMessage.Complete(KErrNone);
+ }
+ else if(statePckg().iType == EFileSize)
+ {
+ TUint size = 0;
+ GetSize(size);
+ statePckg().iFileSize = size;
+ aMessage.WriteDataToClient(statePckg);
+ aMessage.Complete(KErrNone);
+ }
+ else if(statePckg().iType == EFileSourceStateChanged)
+ {
+ if(iState != statePckg().iState)
+ {
+ statePckg().iState = iState;
+ aMessage.WriteDataToClient(statePckg);
+ aMessage.Complete(KErrNone);
+ }
+ else
+ iMessage = new(ELeave) TMMFMessage(aMessage);
+ }
+ }
+ break;
+
+ default:
+ //err = KErrArgument;
+ break;
+ }
+ }
+
+TInt CFileMultimediaSource::ServiceFillBuffer()
+ {
+
+ DEBPRN3(_L("CFileMultimediaSource::ServiceFillBuffer() state[%d] Download Size[%d]"), iState ,iDownloadSize );
+
+ TInt status(KErrNone);
+ if ( iSinkQueue->IsEmpty() )
+ return KErrNone;
+
+ CSinkQueueItem* snkItem = iSinkQueue->First();
+ iSinkQueue->Remove(*snkItem);
+ iSnkItemsCount--;
+ CMMFBuffer* buffer = snkItem->Buffer();
+ DEBPRN2(_L("CFileMultimediaSource::ServiceFillBuffer() Buffer[%x]"), buffer );
+ MMultimediaDataSourceObserver* observer = snkItem->Observer();
+ MDataSink* consumer = snkItem->Consumer();
+ delete snkItem;
+
+ if (CMMFBuffer::IsSupportedDataBuffer(buffer->Type()))
+ {
+ CTransferBufferCopy* transBufCopy = NULL;
+ CReadRequest* request = NULL;
+
+ TDes8& bufferDes = STATIC_CAST( CMMFDataBuffer*, buffer )->Data();
+
+ TInt requestSize;
+ if(buffer->RequestSize())
+ requestSize = buffer->RequestSize();
+ else
+ requestSize = bufferDes.MaxLength();
+
+ //check whether buffer is safe to send to file server
+ //if not, eg for a transfer buffer, then it needs to be copied
+ if (!CMMFBuffer::IsFileServerSafe(buffer->Type()))
+ {
+ //NB: failure in this method will NOT cause transBufCopy to leak as it will be
+ //inserted into iTransferBufferCopies by ObtainCopyOfTransferBufferL.
+ TRAP(status,transBufCopy = ObtainCopyOfTransferBufferL(bufferDes.MaxLength()));
+
+ if(consumer && !observer)
+ request = new(ELeave) CReadRequest(this,STATIC_CAST(TAny*, consumer), buffer, transBufCopy, iSnkBytes, iDownloadSize, ETrue);
+ else
+ request = new(ELeave) CReadRequest(this,STATIC_CAST(TAny*, observer), buffer, transBufCopy, iSnkBytes, iDownloadSize, EFalse);
+
+ }
+ else
+ {
+ if(consumer && !observer)
+ request = new(ELeave) CReadRequest(this,STATIC_CAST(TAny*, consumer), buffer, iSnkBytes, iDownloadSize, ETrue);
+ else
+ request = new(ELeave) CReadRequest(this,STATIC_CAST(TAny*, observer), buffer, iSnkBytes, iDownloadSize, EFalse);
+ }
+
+ CleanupStack::PushL( request );
+
+ TRAP_IGNORE(StoreRequestL(request)); // transfers ownership
+ CleanupStack::Pop() ; // request
+
+ request->SetActive();
+
+ if ((iSnkBytes + request->Buffer()->RequestSize()) > iFileSize)
+ {
+ request->Buffer()->SetLastBuffer(ETrue);
+ DEBPRN1(_L("CFileMultimediaSource::ServiceFillBuffer() LastBuffer$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$"));
+ }
+
+ iFile->Read(request->BufferDes(), requestSize, request->iStatus);
+
+ }
+ else // if (CMMFBuffer::IsSupportedDataBuffer(buffer->Type()))
+ return KErrNotSupported;
+
+
+ return status;
+ }
+
+TInt CFileMultimediaSource::EmptySinkQueue()
+ {
+ TInt status(KErrNone);
+ // Empty sink queue
+ CSinkQueueItem* snkItem;
+ while ( !iSinkQueue->IsEmpty() )
+ {
+ snkItem = iSinkQueue->First();
+ iSinkQueue->Remove(*snkItem);
+ delete snkItem;
+ }
+
+ iSnkItemsCount = 0;
+ return status;
+ }
+
+void CFileMultimediaSource::StateChanged(TState newState)
+ {
+ DEBPRN3(_L("CFileMultimediaSource::StateChanged OLD[%d] NEW[%d]"),iState, newState);
+ if(iState != newState)
+ {
+ if(iMessage)
+ {
+ if(!iMessage->IsCompleted())
+ {
+ TPckgBuf<TFileDataSourceEvent> statePckg;
+ statePckg().iState = newState;
+ statePckg().iType = EFileSourceStateChanged;
+ iMessage->WriteDataToClient(statePckg);
+ iMessage->Complete(KErrNone);
+ delete iMessage;
+ iMessage = NULL;
+ }
+ }
+ iState = newState;
+ }
+ }
+
+TInt CFileMultimediaSource::ReadRequestStatus(CReadWriteRequest* aRequest, TRequestStatus& aStatus)
+ {
+
+ if(aStatus != KErrNone)
+ {
+ TMMFEvent event(KMMFErrorCategoryControllerGeneralError, aStatus.Int());
+ iEventHandler->SendEventToClient(event);
+ return KErrNone;
+ }
+ else
+ {
+
+ DEBPRN4(_L("CFileMultimediaSource::ReadRequestStatus Buffer[%x] BufferSize[%d] RequestSize[%d]"),aRequest->Buffer(),aRequest->Buffer()->BufferSize(),aRequest->Buffer()->RequestSize());
+ DEBPRN3(_L("CFileMultimediaSource::ReadRequestStatus Buffer[%x] LastBuffer[%d]"),aRequest->Buffer(),aRequest->Buffer()->LastBuffer());
+
+ TBool lastBuffer = aRequest->Buffer()->LastBuffer();
+
+ if((aRequest->Buffer()->BufferSize() != aRequest->Buffer()->RequestSize()) && !lastBuffer)
+ {
+ if(aRequest->SourceType())
+ {
+ MDataSink* sinkOrSource = REINTERPRET_CAST(MDataSink*,aRequest->GetSinkOrSource());
+ AppendBufferToSinkQueue(aRequest->Buffer(),(MMultimediaDataSourceObserver*)NULL,sinkOrSource,ETrue);
+ iSnkBytes -= aRequest->Buffer()->BufferSize();
+ iFile->Seek(ESeekStart,iSnkBytes);
+ StateChanged(EBUFFERING);
+ }
+ else
+ {
+ MMultimediaDataSourceObserver* sinkOrSource = REINTERPRET_CAST(MMultimediaDataSourceObserver*,aRequest->GetSinkOrSource());
+ AppendBufferToSinkQueue(aRequest->Buffer(),sinkOrSource,(MDataSink*)NULL,ETrue);
+ iSnkBytes -= aRequest->Buffer()->BufferSize();
+ iFile->Seek(ESeekStart,iSnkBytes);
+ StateChanged(EBUFFERING);
+ }
+ }
+ else
+ {
+ iSnkBytes += aRequest->Buffer()->BufferSize();
+
+
+ if(aRequest->SourceType())
+ REINTERPRET_CAST(MDataSink*, aRequest->GetSinkOrSource())->BufferFilledL(aRequest->Buffer()) ; // callback to MDataSource/Sink
+ else
+ REINTERPRET_CAST(MMultimediaDataSourceObserver*, aRequest->GetSinkOrSource())->BufferFilled(aRequest->Buffer()) ; // callback to MDataSource/Sink
+
+ }
+
+ aRequest->SetStatus(ETrue);
+ return KErrNone;
+ }
+ }
+
+//End of File
+