/*

* Copyright (c) 2002-2007 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:  This class has JNI wrappers for CMMAOutputStream

*

*/

#include "jutils.h"

#include "com_nokia_microedition_media_protocol_OutputStreamWriter.h"

#include "cmmaoutputstream.h"

#include "cmmaeventsource.h"

// If eventsource is already disposed, then do nothing

#define CHECK_HANDLE(x, j) { if ( !( x ) || ( ( x )->Players().Count() == 0 ) ) { return ( j ); } }

LOCAL_C void ReadDataL(CMMAEventSource* aEventSource,

                       TInt aPlayer,

                       CMMAOutputStream* aOutputStream,

                       TUint8* aOutputBuffer,

                       TInt* aOutputBufferSize,

                       TInt* aReadStatus)

{

    if (!aEventSource->FindPlayer(aPlayer))

    {

        // Native object was already deleted

        User::Leave(KErrBadHandle);

    }

    aOutputStream->ReadDataL(aOutputBuffer, aOutputBufferSize, aReadStatus);

}

JNIEXPORT jint JNICALL Java_com_nokia_microedition_media_protocol_OutputStreamWriter__1readData

(JNIEnv* aJni, jclass, jint aOutputStream, jint aEventSource,

 jbyteArray aOutputBuffer, jintArray aOutputBufferSize, jint aLength, jint aPlayerHandle)

{

    CMMAEventSource* eventSource = JavaUnhand< CMMAEventSource >(aEventSource);

    CHECK_HANDLE(eventSource, KErrNone);

    CMMAOutputStream* outputStream = JavaUnhand< CMMAOutputStream >(aOutputStream);

    TInt readStatus;

    jbyte* outputBuffer = aJni->GetByteArrayElements(aOutputBuffer, NULL);

    // NULL is returned if there is not enough memory

    if (!outputBuffer)

    {

        return KErrNoMemory;

    }

    jint* outputBufferSize = aJni->GetIntArrayElements(aOutputBufferSize, NULL);

    if (!outputBufferSize)

    {

        // outputBuffer was already allocated

        aJni->ReleaseByteArrayElements(aOutputBuffer, outputBuffer, JNI_ABORT);

        return KErrNoMemory;

    }

    *outputBufferSize = aLength; // size of the buffer

    TInt err = eventSource->ExecuteTrap(ReadDataL,

                                        eventSource,

                                        aPlayerHandle,

                                        outputStream,

                                        (TUint8*) outputBuffer,

                                        outputBufferSize, // returns readed size

                                        &readStatus);

    if (err != KErrNone)

    {

        return err;

    }

    // Tells if there's more data available or not

    return readStatus;

}

//  END OF FILE