author | William Roberts <williamr@symbian.org> |
Wed, 31 Mar 2010 12:27:01 +0100 | |
branch | Symbian2 |
changeset 3 | e1b950c65cb4 |
parent 2 | 2fe1408b6811 |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#ifndef __MMFDATAPATHPROXY_H__ |
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#define __MMFDATAPATHPROXY_H__ |
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#include <e32base.h> |
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#include <e32std.h> |
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#include <ecom/ecom.h> |
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#include <mmf/server/mmfdatapath.h> |
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#include <mmf/server/mmfsubthreadbase.h> |
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#define KMMFDataPathProxyVersion TVersion(8,0,0) |
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/** |
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The amount of time that is allowed for the datapath to close down before the its thread is killed. |
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*/ |
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#define KMMFDataPathProxyShutdownTimeout TTimeIntervalMicroSeconds32(10000000) |
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/** |
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@publishedAll |
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@released |
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Mixin class that the user of the class CMMFDataPathEventMonitor must derive from. |
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@since 7.0s |
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*/ |
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class MMMFDataPathEventMonitorObserver |
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{ |
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public: |
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/** |
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Handles an event that has been generated by the datapath. |
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Called by CMMFDataPathEventMonitor::RunL(). |
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@param aEvent |
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The event to be handled. |
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@since 7.0s |
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*/ |
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virtual void HandleEvent(const TMMFEvent& aEvent) = 0; |
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}; |
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class RMMFDataPathProxy; //forward reference |
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/** |
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@publishedAll |
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@released |
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Active object utility class that can be used to monitor a datapath that is running in its own |
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thread for events. If an event occurs, the client will be notified via the |
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MMMFDataPathEventMonitorObserver interface. |
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@since 7.0s |
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*/ |
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class CMMFDataPathEventMonitor : public CActive |
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{ |
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public: |
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IMPORT_C static CMMFDataPathEventMonitor* NewL(MMMFDataPathEventMonitorObserver& aObserver, |
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RMMFDataPathProxy& aMMFDataPathProxy); |
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IMPORT_C ~CMMFDataPathEventMonitor(); |
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IMPORT_C void Start(); |
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IMPORT_C void RunL(); |
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protected: |
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void DoCancel(); |
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private: |
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/** |
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Constructs a datapath event monitor object. |
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@param aObserver |
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A reference to the observer of the active object. The observer will be |
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notified when an event occurs. |
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@param aMMFDataPathProxy |
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A reference to the datapath proxy class. |
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@since 7.0s |
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*/ |
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CMMFDataPathEventMonitor(MMMFDataPathEventMonitorObserver& aObserver, |
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RMMFDataPathProxy& aMMFDataPathProxy); |
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private: |
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MMMFDataPathEventMonitorObserver& iObserver; |
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RMMFDataPathProxy& iMMFDataPathProxy; |
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TMMFEventPckg iEventPckg; |
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}; |
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/** |
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@publishedAll |
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@released |
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Proxy class used to create a datapath in a new subthread. |
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*/ |
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class RMMFDataPathProxy : public RMMFSubThreadBase |
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{ |
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public: |
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/** |
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Constuctor. |
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*/ |
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RMMFDataPathProxy() : RMMFSubThreadBase(KMMFDataPathProxyShutdownTimeout) {}; |
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IMPORT_C TInt CreateSubThread(); |
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IMPORT_C TInt LoadDataPath(); |
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IMPORT_C TInt LoadDataPath(TMediaId aMediaId); |
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IMPORT_C TInt LoadDataPath(TUid aCodecUid); |
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IMPORT_C TInt LoadDataPath(TUid aCodecUid, TMediaId aMediaId); |
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IMPORT_C TInt AddDataSource(MDataSource* aSource); |
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IMPORT_C TInt AddDataSink(MDataSink* aSink); |
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IMPORT_C TInt Prime(); |
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IMPORT_C TInt Play(); |
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IMPORT_C TInt Pause(); |
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IMPORT_C TInt Stop(); |
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IMPORT_C TInt GetPosition(TTimeIntervalMicroSeconds& aPosition) const; |
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IMPORT_C TInt SetPosition(const TTimeIntervalMicroSeconds& aPosition); |
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IMPORT_C TInt SetPlayWindow( const TTimeIntervalMicroSeconds& aStart, const TTimeIntervalMicroSeconds& aEnd ) ; |
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IMPORT_C TInt ClearPlayWindow() ; |
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IMPORT_C TInt State( TInt& aState ) ; |
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IMPORT_C void Close(); |
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}; |
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/** |
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@internalComponent |
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The server running in the datapath subthread. |
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The subthread is owned by the main thread and shares the same heap. |
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*/ |
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class CMMFDataPathProxyServer : public CMMFSubThreadServer |
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{ |
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public: |
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static CMMFDataPathProxyServer* NewL(); |
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~CMMFDataPathProxyServer(); |
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static TInt StartThread(TAny* aAny); |
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static void DoStartThreadL(); |
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private: |
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CMmfIpcSession* NewSessionL(const TVersion& aVersion) const; |
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CMMFDataPathProxyServer(); |
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void ConstructL(); |
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}; |
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/** |
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@internalComponent |
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The session used to transmit messages between the main thread and the subthread. |
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Only one session can be created with a datapath subthread. |
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Once this session is closed, the subthread will be killed. |
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*/ |
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class CMMFDataPathProxySession : public CMMFSubThreadSession |
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{ |
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public: |
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static CMMFDataPathProxySession* NewL(); |
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~CMMFDataPathProxySession(); |
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void ServiceL(const RMmfIpcMessage& aMessage); |
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private: |
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CMMFDataPathProxySession(); |
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TBool LoadDataPathByL(const RMmfIpcMessage& aMessage); |
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TBool LoadDataPathByMediaIdL(const RMmfIpcMessage& aMessage); |
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TBool LoadDataPathByCodecUidL(const RMmfIpcMessage& aMessage); |
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TBool LoadDataPathByMediaIdCodecUidL(const RMmfIpcMessage& aMessage); |
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TBool AddDataSourceL(const RMmfIpcMessage& aMessage); |
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TBool AddDataSinkL(const RMmfIpcMessage& aMessage); |
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TBool PrimeL(const RMmfIpcMessage& aMessage); |
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TBool PlayL(const RMmfIpcMessage& aMessage); |
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TBool PauseL(const RMmfIpcMessage& aMessage); |
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TBool StopL(const RMmfIpcMessage& aMessage); |
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TBool GetPositionL(const RMmfIpcMessage& aMessage) const; |
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TBool SetPositionL(const RMmfIpcMessage& aMessage); |
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TBool SetPlayWindowL(const RMmfIpcMessage& aMessage) ; |
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TBool ClearPlayWindowL(const RMmfIpcMessage& aMessage) ; |
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TBool StateL(const RMmfIpcMessage& aMessage) ; |
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void CheckDataPathExistsL() const {if (!iDataPath) User::Leave(KErrNotReady);}; |
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private: |
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CMMFDataPath* iDataPath; |
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}; |
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#endif |