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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: This class has JNI wrappers for CMMAOutputStream
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*
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*/
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#include "jutils.h"
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#include "com_nokia_microedition_media_protocol_OutputStreamWriter.h"
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#include "cmmaoutputstream.h"
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#include "cmmaeventsource.h"
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// If eventsource is already disposed, then do nothing
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#define CHECK_HANDLE(x, j) { if ( !( x ) || ( ( x )->Players().Count() == 0 ) ) { return ( j ); } }
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LOCAL_C void ReadDataL(CMMAEventSource* aEventSource,
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TInt aPlayer,
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CMMAOutputStream* aOutputStream,
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TUint8* aOutputBuffer,
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TInt* aOutputBufferSize,
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TInt* aReadStatus)
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{
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if (!aEventSource->FindPlayer(aPlayer))
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{
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// Native object was already deleted
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User::Leave(KErrBadHandle);
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}
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aOutputStream->ReadDataL(aOutputBuffer, aOutputBufferSize, aReadStatus);
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}
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JNIEXPORT jint JNICALL Java_com_nokia_microedition_media_protocol_OutputStreamWriter__1readData
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(JNIEnv* aJni, jclass, jint aOutputStream, jint aEventSource,
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jbyteArray aOutputBuffer, jintArray aOutputBufferSize, jint aLength, jint aPlayerHandle)
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{
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CMMAEventSource* eventSource = JavaUnhand< CMMAEventSource >(aEventSource);
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CHECK_HANDLE(eventSource, KErrNone);
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CMMAOutputStream* outputStream = JavaUnhand< CMMAOutputStream >(aOutputStream);
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TInt readStatus;
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jbyte* outputBuffer = aJni->GetByteArrayElements(aOutputBuffer, NULL);
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// NULL is returned if there is not enough memory
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if (!outputBuffer)
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{
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return KErrNoMemory;
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}
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jint* outputBufferSize = aJni->GetIntArrayElements(aOutputBufferSize, NULL);
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if (!outputBufferSize)
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{
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// outputBuffer was already allocated
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aJni->ReleaseByteArrayElements(aOutputBuffer, outputBuffer, JNI_ABORT);
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return KErrNoMemory;
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}
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*outputBufferSize = aLength; // size of the buffer
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TInt err = eventSource->ExecuteTrap(ReadDataL,
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eventSource,
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aPlayerHandle,
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outputStream,
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(TUint8*) outputBuffer,
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outputBufferSize, // returns readed size
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&readStatus);
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aJni->ReleaseByteArrayElements(aOutputBuffer, outputBuffer, 0);
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aJni->ReleaseIntArrayElements(aOutputBufferSize, outputBufferSize, 0);
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if (err != KErrNone)
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{
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return err;
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}
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// Tells if there's more data available or not
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return readStatus;
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}
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// END OF FILE
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