--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/src/server/BaseClasses/mmfdatapath2.cpp Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,1106 @@
+// Copyright (c) 2008-2009 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:
+// source\server\mmfdatapath2.cpp
+//
+//
+
+#include <e32math.h>
+#include <mmf/common/mmffourcc.h>
+#include <mmf/common/mmfpaniccodes.h>
+#include <mmf/server/mmfaudiooutput.h>
+#include <mmf/server/mmfaudioinput.h>
+#include "mmfdatapath2.h"
+#include "mmfclientaudiostreamutils.h"
+#include <mmf/common/mmfaudio.h>
+#include <mmf/plugin/mmfcodecimplementationuids.hrh> // KUidMmfCodecAudioSettings
+#include <mmf/server/devsoundstandardcustominterfaces.h>
+#include <mmf/server/mmffile.h>
+#include <mda/client/resource.h>
+
+static void Panic(TMMFDataPathPanicCode aPanicCode, TInt aSourceLineNumber)
+ {
+ _LIT(KMMFDataPathPanicCategory, "MMFDataPath2");
+ User::Panic(KMMFDataPathPanicCategory, STATIC_CAST(TInt,aPanicCode) + aSourceLineNumber);
+ }
+
+/**
+Allocates and constructs a data path.
+
+Use this function if the codec UID is not already known by CMMFController
+and there is no data path ambiguity - ie only one data path is possible.
+
+Will create codec via fourCC.
+
+@param aEventHandler
+ Installs an event handler to provide message passing between clients and sources/sinks.
+
+@return Newly constructed data path object.
+*/
+
+EXPORT_C CMMFDataPath2* CMMFDataPath2::NewL(MAsyncEventHandler& aEventHandler)
+ {
+ CMMFDataPath2* self = new(ELeave) CMMFDataPath2(TMediaId(), aEventHandler);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop();
+ return self;
+ }
+
+
+/**
+Allocates and constructs a data path according to the specified media ID.
+
+Use this function if the codec UID is not already known by CMMFController
+and there is ambiguity with the data path ie. there is more than one possible data path.
+
+@param aMediaId
+ Optional media ID parameter when there are multiple media types.
+@param aEventHandler
+ Installs an event handler to provide message passing between clients and sources/sinks.
+
+@return A newly constructed data path object.
+*/
+
+EXPORT_C CMMFDataPath2* CMMFDataPath2::NewL(TMediaId aMediaId, MAsyncEventHandler& aEventHandler)
+ {
+ CMMFDataPath2* self = new(ELeave) CMMFDataPath2(aMediaId, aEventHandler);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop();
+ return self;
+ }
+
+/**
+Allocates and constructs a data path according to the specified codec UID.
+
+Use this function if the codec UID is already known by CMMFController
+and there is no data path ambiguity ie. only one data path is possible
+will create codec explicitly using the supplied codec Uid
+
+@param aCodecUid
+ Optional mediaID parameter when there are multiple media types
+@param aEventHandler
+ Installs an event handler to provide message passing between clients and sources/sinks.
+
+@return A newly constructed data path object.
+*/
+
+EXPORT_C CMMFDataPath2* CMMFDataPath2::NewL(TUid aCodecUid, MAsyncEventHandler& aEventHandler)
+ {
+ CMMFDataPath2* self = new(ELeave) CMMFDataPath2(TMediaId(), aEventHandler);
+ CleanupStack::PushL(self);
+ self->ConstructL(aCodecUid);
+ CleanupStack::Pop();
+ return self;
+ }
+
+
+/**
+Allocates and constructs a data path according to the specified codec UID.
+
+Use this function if the codec UID is already known by CMMFController
+and there is ambiguity ie. more than one possible data path.
+TMediaId used to select the path.
+
+@param aCodecUid
+ The codec UID.
+@param aMediaId
+ Optional mediaID parameter when there are multiple media types.
+@param aEventHandler
+ Installs an event handler to provide message passing between clients and sources/sinks.
+
+@return A newly constructed data path object.
+*/
+EXPORT_C CMMFDataPath2* CMMFDataPath2::NewL(TUid aCodecUid, TMediaId aMediaId, MAsyncEventHandler& aEventHandler)
+ {
+ CMMFDataPath2* self = new(ELeave) CMMFDataPath2(aMediaId, aEventHandler);
+ CleanupStack::PushL(self);
+ self->ConstructL(aCodecUid);
+ CleanupStack::Pop();
+ return self;
+ }
+
+CMMFDataPath2::CMMFDataPath2(TMediaId aMediaId, MAsyncEventHandler& aEventHandler)
+ : CMMFDataPath(aMediaId, aEventHandler), iTimeLeftToPlayComplete(-1)
+ {
+ }
+
+void CMMFDataPath2::ConstructL(TUid aCodecUid)
+ {
+ CMMFDataPath::ConstructL(aCodecUid);
+ iRepeatTrailingSilenceTimer = CPeriodic::NewL(CActive::EPriorityStandard);
+ }
+
+/**
+Standard destructor.
+*/
+
+CMMFDataPath2::~CMMFDataPath2()
+ {
+ if(iRepeatTrailingSilenceTimer)
+ {
+ iRepeatTrailingSilenceTimer->Cancel();
+ delete iRepeatTrailingSilenceTimer;
+ }
+ }
+
+TInt CMMFDataPath2::RepeatTrailingSilenceTimerComplete(TAny* aDataPath)
+ {
+ CMMFDataPath2* dataPath = static_cast<CMMFDataPath2*>(aDataPath);
+
+ TRAPD(err, dataPath->DoRepeatTrailingSilenceTimerCompleteL());
+ if (err != KErrNone)
+ {
+ dataPath->DoSendEventToClient(KMMFEventCategoryPlaybackComplete, err);
+ }
+ return KErrNone;
+ }
+
+TInt CMMFDataPath2::DoRepeatTrailingSilenceTimerCompleteL()
+ {
+ //cancel this periodic timer
+ iRepeatTrailingSilenceTimer->Cancel();
+ if(iTimeLeftToPlayComplete.Int64()>0)
+ {
+ iTimeLeftToPlayComplete=0;
+ }
+
+ if (iTrailingSilenceLeftToPlay.Int64() > 0)
+ {
+ PlaySilence();
+ }
+ else
+ {
+ SetPositionL(iPlayWindowStartPosition);
+ iTimeLeftToPlayComplete=-1;
+ FillSourceBufferL();
+ }
+ return KErrNone;
+ }
+
+void CMMFDataPath2::PlaySilence()
+ {
+ // iRepeatTrailingSilenceTimer->After() takes a TTimeIntervalMicroSeconds32
+ // so for longer periods of silence call it repeatedly with KMaxTInt lengths
+ TTimeIntervalMicroSeconds32 silence;
+ if(iTimeLeftToPlayComplete.Int64() > 0)
+ {
+ silence = I64INT(iTimeLeftToPlayComplete.Int64());
+ }
+ else if (iTrailingSilenceLeftToPlay.Int64() > KMaxTInt)
+ {
+ silence = KMaxTInt;
+ iTrailingSilenceLeftToPlay = iTrailingSilenceLeftToPlay.Int64() - KMaxTInt;
+ }
+ else
+ {
+ silence = I64INT(iTrailingSilenceLeftToPlay.Int64());
+ iTrailingSilenceLeftToPlay = 0;
+ }
+ iRepeatTrailingSilenceTimer->Start(silence, silence , TCallBack(RepeatTrailingSilenceTimerComplete, this));
+ }
+
+/*
+ * FillSourceBufferL
+ *
+ * Function to get data from the datapath's iDataSource
+ */
+
+void CMMFDataPath2::DoFillSourceBufferL()
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::FillSourceBufferL tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+
+ __ASSERT_DEBUG((iState == EPlaying || iState == EConverting || iState == ERecording || (iState == EPrimed && iPauseCalled && iIsUsingResumeSupport)), Panic(EMMFDataPathPanicBadState,__LINE__));
+
+ // clear the no-more-source flag here (as well as in PlayL()) because
+ // there may have been a re-position since the last call to BufferFilledL()
+ iNoMoreSourceData = EFalse;
+
+ if(!iObtainingAsyncSourceBuffer)
+ {//this is a normal request for data.
+ //If we are getting asynchronous buffers, then can't do this as iSourceBuffer == NULL
+ iSourceBuffer->SetFrameNumber(++iCurrentSourceFrameNumber); //so source knows which data to load buffer with
+ iSourceBuffer->SetStatus(EBeingFilled);
+ iSourceBuffer->SetLastBuffer(EFalse);
+ }
+
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP asking for buffer %d - ptr=0x%x (this 0x%x)\n"), iCurrentSourceFrameNumber, iSourceBuffer,this);
+#endif
+
+ iSourceBufferWithSource = ETrue;
+
+ // wait for BufferFilled callback from source. Do this here as some sources cause
+ //re-entrancy into data path via BufferFilledL
+ ChangeDataPathTransferState(EWaitSource);
+
+ iDataSource->FillBufferL(iSourceBuffer, this, iMediaId);
+
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::FillSourceBufferL - DONE tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+ }
+
+/**
+Runs the clip depending on the current data path and transfer state.
+
+For example, fills the sink buffer if TDataPathState is EPlaying and TTransferState is ENeedSinkData.
+*/
+void CMMFDataPath2::RunL()
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::RunL transfer state %d, iPausedCalled %d, tick-%d (this 0x%x)\n"),iTransferState, iPauseCalled, User::TickCount(),this);
+#endif
+
+ switch (iState)
+ {
+ case EStopped:
+ break;
+ case EPrimed: // In the paused state we still continue to feed buffers to the sink. The sink (DevSound) handles the logic of whether the buffers should be emptied
+ {
+ if (!iPauseCalled || !iIsUsingResumeSupport)
+ break;
+ }
+ // fall-through
+ case EPlaying:
+ case ERecording:
+ case EConverting:
+ switch (iTransferState)
+ {
+ case EWaitSink:
+ case EWaitSource:
+ break;
+ case EInitializeSink:
+ InitializeSinkL();
+ break;
+ case EInitializeSource:
+ InitializeSourceL();
+ break;
+ case ENeedSourceData:
+ FillSourceBufferL();
+ break;
+ case ENeedSinkData:
+ FillSinkBufferL();
+ break;
+ case ENeedToMatchSourceToSink:
+ FillSinkBufferL();
+ break;
+ case ESendDataToSink:
+ EmptySinkBufferL();
+ break;
+ case EEndOfData:
+ EndOfData();
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::RunL DONE\n"));
+#endif
+ }
+
+/*
+ * FillSourceBufferL
+ *
+ * Function to get data from the datapath's iDataSource
+ */
+
+void CMMFDataPath2::FillSourceBufferL()
+ {
+ __ASSERT_DEBUG((iState == EPlaying || iState == EConverting || iState == ERecording || (iState == EPrimed && iPauseCalled && iIsUsingResumeSupport) ), Panic(EMMFDataPathPanicBadState,__LINE__));
+
+ //if the silence timer is active then dont propagate the request
+ if(iRepeatTrailingSilenceTimer->IsActive())
+ {
+ return;
+ }
+
+ //play the silence period and dont propagate the request
+ if(iTrailingSilenceLeftToPlay>0 || iVerifyPlayComplete)
+ {
+ if(iVerifyPlayComplete)//case when the trailing silence is zero
+ {
+ if (!*iDisableAutoIntent && iDrmSource)
+ {
+ CMMFFile* file = static_cast<CMMFFile*>(iDrmSource);
+ TInt err = file->ExecuteIntent(ContentAccess::EPlay);
+ if (err != KErrNone)
+ {
+ DoSendEventToClient(KMMFEventCategoryPlaybackComplete, err);
+ return;
+ }
+ }
+
+ //Retrieve the current play time and add "duration-currentplaytime" to the silence period
+ //This is to ensure that silence timer is not started before the previous play is actually completed by the devsound
+ TTimeIntervalMicroSeconds currentTime = CalculateAudioOutputPosition();
+ if(currentTime.Int64()>iPlayWindowStartPosition.Int64())
+ {
+ iTimeLeftToPlayComplete = iPlayWindowEndPosition.Int64()-currentTime.Int64();
+ }
+ else
+ {
+ iTimeLeftToPlayComplete = 0;
+ }
+
+ iVerifyPlayComplete = EFalse;
+ }
+ if(iTrailingSilenceLeftToPlay==0 && iTimeLeftToPlayComplete==0)
+ {
+ SetPositionL(iPlayWindowStartPosition);
+ iTimeLeftToPlayComplete=-1;
+ }
+ else
+ {
+ PlaySilence();
+ return;
+ }
+ }
+
+ DoFillSourceBufferL();
+ }
+
+
+/**
+Indicates the data source has filled the specified buffer.
+
+Called by the CMMFDataPath2's MDataSource when it has filled the buffer.
+
+@param aBuffer
+ A pointer to the filled buffer.
+*/
+void CMMFDataPath2::BufferFilledL(CMMFBuffer* aBuffer)
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL src has filled buffer %d (ptr=0x%x) with %d bytes EoF = %d tick-%d (this 0x%x)\n"),aBuffer->FrameNumber(),aBuffer, aBuffer->BufferSize(),aBuffer->LastBuffer(), User::TickCount(),this);
+#endif
+
+ TBool isInTruePause = (iState == EPrimed && iPauseCalled && iIsUsingResumeSupport);
+ //state only used if we are passing data
+ __ASSERT_DEBUG((iState == EPlaying || iState == EConverting || iState == ERecording || isInTruePause), Panic(EMMFDataPathPanicBadState,__LINE__));
+
+ __ASSERT_DEBUG((!iNoMoreSourceData), Panic(EMMFDataPathPanicBadState,__LINE__));
+
+ //if we have been asked to repeat and this is the last buffer, reset last buffer flag and send to the device
+ if(aBuffer!= NULL && aBuffer->LastBuffer())
+ {
+ iNumberOfTimesPlayed++;
+ if ((iNumberOfTimesPlayed <= iNumberOfTimesToRepeat) || iNumberOfTimesToRepeat == KMdaRepeatForever)
+ {
+ aBuffer->SetLastBuffer(EFalse);
+
+ //this will trigger the trailing silence timer next time a buffer is requested.
+ iTrailingSilenceLeftToPlay = iTrailingSilence;
+ iVerifyPlayComplete = ETrue;
+ }
+ }
+
+ iSourceBufferWithSource = EFalse;
+
+ //Has the datapath stopped running, if so were not interested in any callbacks.
+ if(iState == EStopped || (iState == EPrimed && !isInTruePause))
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL called while not expecting callback iState=%d iPauseCalled=%d (this 0x%x)\n"),iState, iPauseCalled,this);
+#endif
+ return;
+ }
+
+#ifdef REPOSITION_SPEEDUP
+ // if the source has been re-positioned, then go & get some more source data now
+ if (!iObtainingAsyncSourceBuffer && iSourceBuffer->FrameNumber() != iCurrentSourceFrameNumber)
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL source was re-positioned re-requesting source data (this 0x%x)\n"),this);
+#endif
+ ChangeDataPathTransferState(ENeedSourceData);
+ return;
+ }
+#endif //REPOSITION_SPEEDUP
+
+ //bufer is NULL, indicating no more source data.
+ if (!aBuffer)
+ {
+ //If we only hold a reference to the source buffer, set that to NULL
+ if(iSnkBufRef)
+ {
+ iSourceBuffer = NULL;
+ }
+
+ iNoMoreSourceData = ETrue;
+
+ if(!iCodec || //there's only one buffer and that has been returned as NULL, so must be end of data
+ iSinkBufferWithSink) //buffer is with sink, we don't have any more data to put in it, so must be end of data
+ {
+ ChangeDataPathTransferState(EEndOfData);
+ }
+ else //sink buffer is with datapath, see if there is anything to send to sink
+ {
+ ChangeDataPathTransferState(ENeedToMatchSourceToSink);
+ }
+
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL DONE aBuffer==NULL tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+ return;
+ }
+
+
+ //We were waiting for a response from the source to get an asynchronous buffer.
+ //We now have it, and we proceed to transfer this data to the sink.
+ if (iObtainingAsyncSourceBuffer)
+ {
+ iObtainingAsyncSourceBuffer = EFalse;
+ }
+
+
+ aBuffer->SetStatus(EFull);
+
+ if(iSourceBuffer != aBuffer)
+ {//buffer has been changed by the source
+ iSourceBuffer = aBuffer;
+ if (!(iBuffersToUse & ENeedSinkBuffer))
+ {//we only need one buffer and use source
+ iSinkBuffer = iSourceBuffer;
+ iSnkBufRef = ETrue;
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL - iSourceBuffer=0x%x ref=%d iSinkBuffer=0x%x ref=%d (this 0x%x)\n"),iSourceBuffer,iSrcBufRef,iSinkBuffer,iSnkBufRef, this);
+#endif
+ }
+ //Is this the last buffer from the source (0 length or LastBuffer flag set)
+ //or have reached the end of the play window; we only look at the play window here
+ //if we are converting. For conversion we look at the data we have read. This is then passed onto
+ //the source
+ if (!iSourceBuffer->BufferSize() || iSourceBuffer->LastBuffer() ||
+ (((iState == EConverting) || (iState == EPlaying)) && (iPlayWindowEndPosition < iCachedSourceDuration) && ( InputPosition() >= iPlayWindowEndPosition )))
+ {
+ iNumberOfTimesPlayed++;
+ if ((iNumberOfTimesPlayed <= iNumberOfTimesToRepeat) || iNumberOfTimesToRepeat == KMdaRepeatForever)
+ {
+ iSourceBuffer->SetLastBuffer(EFalse);
+ //this will trigger the trailing silence timer next time a buffer is requested.
+ iTrailingSilenceLeftToPlay = iTrailingSilence;
+ iVerifyPlayComplete = ETrue;
+ }
+ else
+ {
+ #ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL end of input data tick-%d (this 0x%x)\n"),User::TickCount(),this);
+ RDebug::Print(_L("iSourceBuffer->BufferSize()=%d\n"),iSourceBuffer->BufferSize());
+ RDebug::Print(_L("iSourceBuffer->LastBuffer()=%d\n"),iSourceBuffer->LastBuffer());
+ RDebug::Print(_L("InputPosition()=%d >= iPlayWindowEndPosition=%d\n"),I64INT(InputPosition().Int64()),I64INT(iPlayWindowEndPosition.Int64()));
+ #endif
+ iNoMoreSourceData = ETrue;
+ iSourceBuffer->SetLastBuffer(ETrue); //just in-case we are terminating on BufferSize == 0 or play window
+ }
+ }
+
+
+ if (!iCodec)
+ {
+ ChangeDataPathTransferState(ESendDataToSink);
+ }
+ else if(!iSinkBufferWithSink) //sink buffer is with data path, can try to fill it
+ {
+ ChangeDataPathTransferState(ENeedToMatchSourceToSink);
+ }
+ //else wait for sink to return buffer BufferEmptied will send us into ENeedToMatchSourceToSink state
+
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::BufferFilledL - DONE tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+ }
+
+/**
+Sets the data path position.
+
+@param aPosition
+ The data path position.
+*/
+void CMMFDataPath2::SetPositionL(const TTimeIntervalMicroSeconds& aPosition)
+ {//need to map to source position to frame position
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::SetPositionL = %d ticks-%d (this 0x%x)\n"),I64INT(aPosition.Int64()), User::TickCount(),this);
+#endif
+
+ if (iState == EStopped)
+ {
+ User::Leave(KErrNotReady); //can only set position if primed
+ }
+
+ if(iGetTimePlayedSupported)
+ {
+ TTimeIntervalMicroSeconds timePlayed(0);
+ if(iState == EPlaying && iDataSink->DataSinkType() == KUidMmfAudioOutput)
+ {
+ CMMFAudioOutput* audioOutput = STATIC_CAST(CMMFAudioOutput*,iDataSink);
+ CMMFDevSound& devSound = audioOutput->SoundDevice();
+ TInt err= devSound.GetTimePlayed(timePlayed);
+ if(err == KErrNone)
+ {
+ iDevSoundRepositionTime = timePlayed.Int64();
+ }
+ }
+ else
+ {
+ iDevSoundRepositionTime = 0;
+ }
+ }
+ else //roll back to samplesplayed
+ {
+ //As this will affect the position, we need to know how many bytes were
+ //played when position was updated. Future Position() requests will
+ //then use this refernce to determine the current position.
+ iReferenceAudioSamplesPlayed = AudioSamplesPlayed();
+ }
+
+ // Force the new position to be inside the play window (also within the file duration)
+ if ( aPosition < iPlayWindowStartPosition )
+ {
+ iStartPosition = iPlayWindowStartPosition;
+ }
+ else if ( aPosition > iPlayWindowEndPosition )
+ {
+ iStartPosition = iPlayWindowEndPosition; //clearly this will cause nothing to be played
+ }
+ else
+ {
+ iStartPosition = aPosition;
+ }
+
+ TTimeIntervalMicroSeconds interval;
+
+ //can only set the position on an MDataSource that is a format object
+ //Note: position defaults to source if both source & sink are clips
+ if (iDataSource->DataSourceType() == KUidMmfFormatDecode)
+ {
+ //position is not beyond the end of file
+ interval = ((CMMFFormatDecode*)iDataSource)->FrameTimeInterval(iMediaId);
+
+ // for some reason this code won't compile without these intermediate steps
+ TInt64 position = iStartPosition.Int64();
+ TInt64 interval64 = interval.Int64();
+ if (interval64 == 0)
+ User::Leave(KErrDivideByZero);
+ TInt64 datapos64 = position/interval64;
+ iCurrentSourceFrameNumber = I64LOW(datapos64);
+
+
+ // Try to set the position directly on the format
+ TRAP_IGNORE(((CMMFFormatDecode*)iDataSource)->SetPositionL(iStartPosition));
+ //NB: don't worry about error, since we'll reposition anyway when we get the next buffer
+ }
+ else if (iDataSink->DataSinkType() == KUidMmfFormatEncode)
+ {
+ //position is not beyond the end of file
+ interval = ((CMMFFormatEncode*)iDataSink)->FrameTimeInterval(iMediaId);
+
+ //convert to TUint - for some reason it won't compile without these intermediate steps
+ TInt64 position = iStartPosition.Int64();
+ TInt64 interval64 = interval.Int64();
+ if (interval64 == 0)
+ User::Leave(KErrDivideByZero);
+ TInt64 datapos64 = position/interval64;
+ iCurrentSinkFrameNumber = I64LOW(datapos64);
+
+
+ // Try to set the position directly on the format
+ TRAP_IGNORE(((CMMFFormatEncode*)iDataSink)->SetPositionL(iStartPosition));
+ //NB: don't worry about error, since we'll reposition anyway when we get the next buffer
+ }
+ else
+ {//can only set position if source or sink is a format
+ //If both source and sink are formats position is relative to the source
+ User::Leave(KErrNotSupported); //can't set position if neither source nor sink are clips
+ }
+
+ if(iCodec) //we have a real codec, must reset it
+ {
+ iCodec->ResetL(); // Need to preserve sync when resuming play
+ }
+
+ // Once we've sent the last buffer to the sink it's too late to start
+ // changing the state since we may get a RunError(KErrUnderflow) at any time.
+ // Once this happens, the sound driver may have unloaded etc..and recovery
+ // would be complicated.
+ if (iAllDataSentToSink)
+ {
+ return;
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::SetPosition - Done iCurrentSourceFrameNumber=%d iStartPosition=%d ticks-%d (this 0x%x)\n"),iCurrentSourceFrameNumber, I64INT(iStartPosition.Int64()), User::TickCount(),this);
+#endif
+ }
+
+/**
+Gets the data path position.
+
+@return The data path position.
+*/
+TTimeIntervalMicroSeconds CMMFDataPath2::Position() const
+ {
+ if ((iState == ERecording) || (iState == EConverting))
+ {
+ return InputPosition();
+ }
+ else if(iState == EPlaying)
+ {
+ return OutputPosition();
+ }
+ else
+ {
+ return iStartPosition;
+ }
+ }
+
+TTimeIntervalMicroSeconds CMMFDataPath2::OutputPosition() const
+ {
+ TTimeIntervalMicroSeconds interval;
+ TTimeIntervalMicroSeconds position;
+
+ if (iDataSink->DataSinkType() == KUidMmfAudioOutput)
+ {
+ position = CalculateAudioOutputPosition();
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::OutputPosition from audio output= %d\n"),I64INT(position.Int64()));
+#endif
+ }
+ else if (iDataSink->DataSinkType() == KUidMmfFormatEncode)
+ {
+ //note Encode format position takes priority if both source & sink are formats?
+ // try to get the position directly from the format. If that fails, work it out here
+ TRAPD(error, position = ((CMMFFormatEncode*)iDataSink)->PositionL());
+ if (error)//getting the position from the format didn't work so calculate it here
+ {
+ interval = ((CMMFFormatEncode*)iDataSink)->FrameTimeInterval(iMediaId);
+ TInt64 position64 = interval.Int64() * iCurrentSinkFrameNumber;
+ position = position64;
+ }
+
+ TTimeIntervalMicroSeconds duration = CONST_CAST(CMMFDataPath2*,this)->Duration(); //need this to check position doesn't exceed duration
+ if (position > duration)//this can happen on last buffer
+ {
+ position = duration;
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::OutputPosition from format= %d\n"),I64INT(position.Int64()));
+#endif
+ }
+ else
+ {//can only read output position if sink is a format or an audio output
+ return TTimeIntervalMicroSeconds(0);
+ }
+
+ return position;
+ }
+
+TTimeIntervalMicroSeconds CMMFDataPath2::CalculateAudioOutputPosition() const
+ {
+ //This operation can only be carried out on an Audio Output
+ __ASSERT_ALWAYS(iDataSink->DataSinkType() == KUidMmfAudioOutput, Panic(EMMFDataPathPanicProgrammingError,__LINE__));
+
+
+ //If we are not playing, simply return where we will play from
+ if(iState != EPlaying || iCurrentSinkFrameNumber == 0 || iStartPosition == iPlayWindowEndPosition )
+ {
+ return iStartPosition;
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::CalculateAudioOutputDuration from %d\n"),iReferenceAudioSamplesPlayed);
+#endif
+
+ CMMFAudioOutput* audioOutput = STATIC_CAST(CMMFAudioOutput*,iDataSink);
+ CMMFDevSound& devSound = audioOutput->SoundDevice();
+
+ TTimeIntervalMicroSeconds devSoundTimePlayed(0);
+ TInt64 timePlayed(0);
+ TInt err = KErrNone;
+ if(iGetTimePlayedSupported)
+ {
+ err= devSound.GetTimePlayed(devSoundTimePlayed);
+ if(err == KErrNone)
+ {
+ timePlayed = devSoundTimePlayed.Int64()-iDevSoundRepositionTime.Int64();
+ }
+ }
+ else //Roll back to SamplesPlayed
+ {
+ TReal samplesPlayed = AudioSamplesPlayed() - iReferenceAudioSamplesPlayed;
+ TMMFCapabilities devSoundConfig = devSound.Config();
+ TInt samplingFreq = StreamUtils::SampleRateAsValue(devSoundConfig);
+ #ifdef _DP_DEBUG
+ RDebug::Print(_L("samplingFreq %d\n"),samplingFreq);
+ #endif
+
+ TReal timePlayedSeconds = 0;
+ if(samplesPlayed)
+ {
+ timePlayedSeconds = samplesPlayed/samplingFreq;
+ }
+ timePlayed = I64DOUBLECAST(timePlayedSeconds * 1000000);
+
+ #ifdef _DP_DEBUG
+ RDebug::Print(_L("timePlayed %d\n"), I64LOW(timePlayed));
+ #endif
+ }
+ if(err == KErrNone)
+ {
+ // When Resume is not supported. Datapath simulates Pause() through DevSound's Stop
+ // the time played is lost. So we need to saved the last position
+ // On the opposite, when Resume is supported the time played returned by DevSound
+ // reflects the real position, so there is no needed to recalculate at least playwindow is being used
+ // Finally, if Resume is supported but is not used the position also need to be saved
+ if(!iIsUsingResumeSupport || iPlayWindowStartPosition.Int64() > 0)
+ {
+ timePlayed = timePlayed + iStartPosition.Int64();
+ }
+
+ //During repeats. we need to reset the positin manually to playstart once playend is reached
+ //this is because the bytes returned by devsound are not accurate in all the cases
+ if(iRepeatTrailingSilenceTimer->IsActive() || iTimeLeftToPlayComplete==0)//loop play
+ {
+ if(iTimeLeftToPlayComplete==0)
+ {
+ timePlayed = iPlayWindowStartPosition.Int64();
+ }
+ }
+ else if(timePlayed>=(iPlayWindowEndPosition.Int64()+1))
+ {
+ timePlayed = iPlayWindowStartPosition.Int64();
+ }
+ }
+
+ return TTimeIntervalMicroSeconds(timePlayed);
+ }
+
+/**
+Stops playing.
+
+Resets datapath position - currently does not clean up buffers. Sends KMMFErrorCategoryDataPathGeneralError
+to the client if an error occurs.
+*/
+void CMMFDataPath2::Stop()
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::Stop current state=%d tick-%d (this 0x%x)\n"), iTransferState, User::TickCount(),this);
+#endif
+ if ((iDataPathCreated) && (iState != EStopped))
+ {
+ TRAPD(err, DoStopL());
+ if (err)
+ {
+ DoSendEventToClient(KMMFErrorCategoryDataPathGeneralError, err);
+ }
+ }
+ }
+
+void CMMFDataPath2::DoStopL()
+ {
+ CMMFDataPath::DoStopL();
+ iRepeatTrailingSilenceTimer->Cancel();
+ iIsUsingResumeSupport = EFalse;
+ }
+
+/**
+Pauses playing.
+
+Sends KMMFErrorCategoryDataPathGeneralError to the client if an error occurs.
+*/
+void CMMFDataPath2::Pause()
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::Pause, on src buff %d sink buf %d (this 0x%x)\n"), iCurrentSourceFrameNumber, iCurrentSinkFrameNumber,this);
+ RDebug::Print(_L("DP::Pause current state=%d tick-%d (this 0x%x)\n"),iTransferState, User::TickCount(),this);
+#endif
+
+ TRAPD(err, DoPauseL());
+
+ if (err)
+ {
+ DoSendEventToClient(KMMFErrorCategoryDataPathGeneralError, err);
+ }
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::Pause - DONE tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+ }
+
+EXPORT_C void CMMFDataPath2::PreEmptionPause()
+ {
+ TRAPD(err, DoPreEmptionPauseL());
+
+ if (err)
+ {
+ DoSendEventToClient(KMMFErrorCategoryDataPathGeneralError, err);
+ }
+ }
+
+/**
+Pauses playing.
+
+Sends KMMFErrorCategoryDataPathGeneralError to the client if an error occurs.
+*/
+void CMMFDataPath2::DoPreEmptionPauseL()
+ {
+
+ if ((iDataPathCreated) && ((iState == EPlaying) || (iState == EConverting) && ( iDataSink->DataSinkType() == KUidMmfAudioOutput )))
+ {
+ iDataSource->SourcePauseL(); // propagate state change to source
+ SetPositionL(Position());
+ iIsUsingResumeSupport = EFalse;
+
+ iDataSink->SinkStopL();
+ iPauseCalled = ETrue; // indicate pause is called
+
+ iState = EPrimed; // go back to primed state (we're not playing)
+
+ iSinkBufferWithSink = EFalse;
+ iSourceBufferWithSource = EFalse;
+
+ ResetRefBuffers(); // buffer references may not be valid any more
+
+ Cancel(); //Stop the state machine
+ }
+ if(iState == ERecording)
+ {
+ User::Leave(KErrNotSupported);
+ }
+ iRepeatTrailingSilenceTimer->Cancel();
+ }
+
+void CMMFDataPath2::DoPauseL()
+ {
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::DoPauseL tick-%d (this 0x%x)\n"),User::TickCount(),this);
+#endif
+
+
+ if ((iDataPathCreated) && ((iState == EPlaying) || (iState == EConverting)))
+ {
+ if (iDataSink->DataSinkType() == KUidMmfAudioOutput && iIsResumeSupported)
+ {
+ iDataSink->SinkPauseL();
+ // When true pause is supported only the datapath's position
+ // should be updated, MDataSource position should be changed
+ iStartPosition = Position();
+ iIsUsingResumeSupport = ETrue;
+ // If we wait for the sink to complete play, then we do not proceed with supplying the buffers to the sink
+ // In this case we need to reset the buffers so that InitializeSinkL won't attempt bringing in new ones
+ if (iTransferState == EWaitSink)
+ {
+ ResetRefBuffers();
+ }
+ }
+ else
+ {
+ // If we use resume support, then there is no need to pause source as we would continue to supply buffers to the sink
+ // Here we are not using resume support, thus we're pausing the source
+ iDataSource->SourcePauseL();
+ SetPositionL(Position());
+ iDataSink->SinkStopL();
+ ResetRefBuffers(); // buffer references may not be valid any more
+
+ Cancel(); //Stop the state machine
+ }
+ iPauseCalled = ETrue; // indicate pause is called
+
+ iState = EPrimed; // go back to primed state (we're not playing)
+ }
+ else if(iState == ERecording)
+ {
+ iPauseCalled = ETrue;
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::DoPauseL Recording, pause datasource\n"));
+#endif
+ iDataSource->SourcePauseL();
+ }
+ iRepeatTrailingSilenceTimer->Cancel();
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::DoPauseL - Done iReferenceAudioSamplesPlayed = %d\n"),iReferenceAudioSamplesPlayed);
+ RDebug::Print(_L("DP::DoPauseL - Done restart at %d tick-%d (this 0x%x)\n"),I64INT(iStartPosition.Int64()), User::TickCount(),this);
+#endif
+ }
+
+/**
+Cancels the silence timer.
+*/
+void CMMFDataPath2::DoCancel()
+ {
+ //cancel repeats
+ iRepeatTrailingSilenceTimer->Cancel();
+ iNumberOfTimesToRepeat=0;
+ }
+
+/**
+Allocates buffers in preparation to play.
+
+Must be called before calling PlayL().
+
+iSnkBufRef and iSrcBufRef contain ETrue if these buffers are created and owned by a MDataSource or MDataSink
+For clean-up purposes, datapath only cleans up buffers allocated directly by PrimeL().
+*/
+void CMMFDataPath2::PrimeL()
+ {
+ CMMFDataPath::PrimeL();
+ if(iDataSink->DataSinkType() == KUidMmfAudioOutput)
+ {
+ CMMFAudioOutput* audioOutput = STATIC_CAST(CMMFAudioOutput*,iDataSink);
+ CMMFDevSound& devSound = audioOutput->SoundDevice();
+ iGetTimePlayedSupported = devSound.IsGetTimePlayedSupported();
+ iIsResumeSupported = devSound.IsResumeSupported();
+ iIsUsingResumeSupport = EFalse;
+ }
+ }
+
+/**
+Starts an active scheduler 'play' loop.
+
+Can only play from the primed state.
+*/
+void CMMFDataPath2::PlayL()
+ {
+
+#if defined(__PROFILING)
+ RDebug::ProfileEnd(1);
+#endif // defined(__PROFILING)
+
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::PlayL, on src buff %d sink buf %d (this 0x%x)\n"), iCurrentSourceFrameNumber, iCurrentSinkFrameNumber,this);
+ RDebug::Print(_L("iStartPosition = %d\n"), I64INT(iStartPosition.Int64()));
+#endif
+
+ if ((iDataPathCreated) && (iState == EPrimed))
+ {
+ //can only play from the primed state
+
+ if(iPauseCalled) //sink and source will have been stopped, and we will not have been re-primed
+ {
+ iDataSink->SinkPrimeL(); //propagate change down to sink
+ iPauseCalled = EFalse;
+ }
+
+ iCurrentSourceFrameNumber = 0; //reset to beginning
+ iCurrentSinkFrameNumber = 0; //reset to beginning
+
+ iSourceBufferWithSource = EFalse;
+ iSinkBufferWithSink = EFalse;
+
+ iNoMoreSourceData = EFalse;
+ iAllDataSentToSink=EFalse;
+ iDataPathCompletedErrorCode=KErrNone;
+
+ if(!iIsResumeSupported || !iIsUsingResumeSupport)
+ {
+ SetPositionL( iStartPosition );
+ }
+ iReferenceAudioSamplesPlayed = 0;
+ iReferenceAudioSamplesRecorded = 0;
+
+ //complete a request on iStatus to invoke play code
+ iDataSource->SourcePlayL(); //propagate state change to source
+
+ // This need to be done always since CMMFAudioOutput::EmptyBuffer
+ // doesn't start playback anymore
+ iDataSink->SinkPlayL(); //propogate state change to sink
+
+ if (iDataSink->DataSinkType() == KUidMmfAudioOutput)
+ iState = EPlaying;
+ else if(iDataSource->DataSourceType() == KUidMmfAudioInput)
+ iState = ERecording;
+ else
+ iState = EConverting;
+
+ //need to re-initialize any buffer(s) that we only own references to
+ ChangeDataPathTransferState(EInitializeSink);
+ }
+ iDevSoundRepositionTime = 0;
+ if(!iRetainRepeatInfo)
+ {
+ iNumberOfTimesPlayed = 0;
+ iTimeLeftToPlayComplete = -1;
+ iVerifyPlayComplete = EFalse;
+ }
+ iRetainRepeatInfo = EFalse;
+#ifdef _DP_DEBUG
+ RDebug::Print(_L("DP::Play - DONE\n"));
+#endif
+ }
+
+/**
+Deletes buffers if this datapath's sources and sinks own the buffers returned by PrimeL().
+Typically if buffers are created asychronously, the datapath doesn't own the buffer
+so leaves cleanup handling to the owner sources/sinks.
+
+Called when source and sink needs to be de-referenced. Sets iDataPathCreated, iSinkCanReceive,
+iSnkBufRef and iSrcBufRef to EFalse; sets iState to EStopped.
+*/
+void CMMFDataPath2::ResetL()
+ {
+ CMMFDataPath::ResetL();
+ iDrmSource = NULL;
+ }
+
+/**
+Sets the number of times the audio sample is to be repeated during the
+playback operation.
+
+A period of silence can follow each playing of the sample. The audio
+sample can be repeated indefinitely.
+
+@param aRepeatNumberOfTimes
+ The number of times the audio sample, together with
+ the trailing silence, is to be repeated. If this is
+ set to KMdaRepeatForever, then the audio
+ sample, together with the trailing silence, is
+ repeated indefinitely or until Stop() is
+ called. If this is set to zero, then the audio sample
+ is not repeated.
+@param aTrailingSilence
+ The time interval of the trailing silence in microseconds.
+
+*/
+EXPORT_C void CMMFDataPath2::SetRepeats(TInt aRepeatNumberOfTimes, const TTimeIntervalMicroSeconds& aTrailingSilence)
+ {
+ iNumberOfTimesToRepeat=aRepeatNumberOfTimes;
+ iTrailingSilence=aTrailingSilence;
+ }
+
+/**
+Sets the Drm file source and the automatic execute intent flag. This method is used by the controller plugin
+to pass these to the datapath in order to execute the play intent during loop play.
+
+@param aSource
+ Data Source on which the play intent needs to be executed. This is usually the CMMFFile source
+@param aDisableAutoIntent
+ Boolean variable which states whether the controller plugin or the datapath needs to execute play intent
+ automatically or not.
+*/
+EXPORT_C void CMMFDataPath2::SetDrmProperties(MDataSource* aSource, TBool *aDisableAutoIntent)
+ {
+ iDrmSource = aSource;
+ iDisableAutoIntent = aDisableAutoIntent;
+ }
+
+/**
+This call indicates PlayL not to reset the iNumberOfTimesPlayed property. This method is used by the controller plugin
+during repositioning. PlayL call during seeking should not reset the iNumberOfTimesPlayed property.
+*/
+EXPORT_C void CMMFDataPath2::RetainRepeatInfo()
+ {
+ iRetainRepeatInfo = ETrue;
+ }