javauis/mmapi_qt/audiostreaming/inc/cmmadatasourcestream.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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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 CMMADATASOURCESTREAM_H
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#define CMMADATASOURCESTREAM_H
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#include "cmmasourcestream.h"
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class CMMADataSourceStreamEvent;
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class MMMASourceStreamListener;
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class MMMAEventPoster;
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class CMMAStreamRequest;
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// CONSTANTS
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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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NONSHARABLE_CLASS(CMMADataSourceStream): public CMMASourceStream
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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 CMMADataSourceStream object
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     */
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    static CMMADataSourceStream* 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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    MMAFunctionServer* aEventSource);
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    /**
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     * Deletes owned objects
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     */
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    ~CMMADataSourceStream(); // Destructor
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public: // New methods
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    /**
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     * Reads data from Java
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     */
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    void Read(CMMAStreamRequest* aRequest);
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    /**
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     * @return readed request
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     */
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    CMMAStreamRequest* Request();
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public: // From CMMASourceStream
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    /**
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     * Overwrites CMMASourceStream's ResetData
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     * so iData will not be NULL, does nothing
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     */
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    void ResetData();
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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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    CMMADataSourceStream(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, MMAFunctionServer* aEventSource,jobject aJavaSourceStream);
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protected:  // From CMMASourceStream
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    void WriteL(const TUint8* aData,
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                TInt aLength, TInt aState);
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protected:
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    // not owned request
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    CMMAStreamRequest* iRequest;
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};
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#endif // CMMADATASOURCESTREAM_H