author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:10:53 +0300 | |
changeset 79 | 2f468c1958d0 |
parent 26 | dc7c549001d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002-2007 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 "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.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: Class for reading data from Java SourceStream to native side |
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* |
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*/ |
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#ifndef CMMASOURCESTREAM_H |
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#define CMMASOURCESTREAM_H |
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//#include <jutils.h> |
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#include "mmafunctionserver.h" |
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class CMMASourceStreamEvent; |
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class MMMASourceStreamListener; |
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class MMMAEventPoster; |
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// CONSTANTS |
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const TInt KMMAReadAllData = -1; |
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// CLASS DECLARATION |
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/** |
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* Class for reading data from Java SourceStream to native side |
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* |
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* |
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*/ |
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NONSHARABLE_CLASS(CMMASourceStream): public CBase |
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{ |
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public: |
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/** |
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* Status of the source stream reader |
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*/ |
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enum TStatus |
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{ |
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EReadAll = 1, |
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ERead = 2, |
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EMoreData = 3, |
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ECompleted = 4, |
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EClosed = 5 |
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}; |
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public: // Constructors and destructors |
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/** |
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* Object creation. Static method. |
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* |
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* @param aJNIEnv handle to used jni environment |
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* @param aEventPoster handle to event poster |
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* @param aJavaSourceStream handle to java SourceStream object |
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* @param aListener Handle to source stream listener |
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* |
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* @return CMMASourceStream object |
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*/ |
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static CMMASourceStream* NewL(JNIEnv* aJNIEnv, |
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MMMAEventPoster* aEventPoster, |
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jobject aJavaSourceStream, |
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MMMASourceStreamListener* aListener); |
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/** |
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* The same as NewL with cleanup stack |
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* @see NewL |
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*/ |
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static CMMASourceStream* NewLC(JNIEnv* aJNIEnv, |
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MMMAEventPoster* aEventPoster, |
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jobject aJavaSourceStream, |
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MMMASourceStreamListener* aListener); |
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/** |
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* Deletes owned objects |
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*/ |
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~CMMASourceStream(); // Destructor |
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protected: // Constructors and destructors |
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/** |
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* Set variables |
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* @param aEventPoster handle to event poster |
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* @param aListener handle to source stream listener |
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*/ |
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CMMASourceStream(MMMAEventPoster* aEventPoster, |
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MMMASourceStreamListener* aListener); |
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/** |
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* 2nd phase constructor |
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* |
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* @param aJNIEnv used jni environment |
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* @param aJavaSourceStream handle to java source stream object |
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*/ |
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void ConstructL(JNIEnv* aJNIEnv, jobject aJavaSourceStream); |
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public: // New methods |
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/** |
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* Writes data to from java buffer to native side |
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* |
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* @param aData data passed by Java side |
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* @param aLength size of passed data |
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* @param state of this class |
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*/ |
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virtual void WriteL(const TUint8* aData, |
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TInt aLength, TInt aState); |
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/** |
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* Read aLength bytes from Java source stream |
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* |
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* @param aLength size of read |
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*/ |
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void ReadL(TInt aLength); |
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|
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/** |
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* Read all data from Java source stream, clears buffer |
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*/ |
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void ReadAllL(); |
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|
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/** |
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* Reset all data |
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*/ |
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virtual void ResetData(); |
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|
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/** |
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* Creates data buffer |
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* |
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* @param aBufferSize data buffer size |
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*/ |
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void CreateDataBufferL(TInt aBufferSize); |
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|
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|
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protected: // New methods |
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|
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/** |
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* Prepare whatever is necessary for reading |
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*/ |
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virtual void PrepareReadL(); |
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|
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protected: |
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CMMASourceStreamEvent* iReadEvent; |
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MMMAEventPoster* iEventPoster; |
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MMMASourceStreamListener* iListener; |
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|
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protected: |
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/** |
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* Buffer where data from java side will be read, Owned |
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*/ |
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HBufC8* iData; |
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|
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/** |
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* number of bytes coming from java stream, KMMAReadAllData is whole stream |
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*/ |
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TInt iReadLength; |
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|
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/** |
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* current position |
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*/ |
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TInt iBufferPosition; |
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}; |
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#endif // CMMASOURCESTREAM_H |