/*

* Copyright (c) 2008 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:  JNI implementation for SensorManagerImpl.java

*

*/

#include <jni.h>

#include <string.h>

#include "com_nokia_mj_impl_sensor_SensorManagerImpl.h"

#include "sensorconnectionlist.h"

#include "sensorjniutils.h"

#include "logger.h"

/*

 * Function for releasing the sensor info array before return

 */

void freeSensorArray(jchar** aSensors, int aCount)

{

    JELOG2(ESensor);

    for (int i = 0; i < aCount; i++)

    {

        delete [] aSensors[i];

    }

    delete aSensors;

}

/*

 * Class:     com_nokia_mj_impl_sensor_SensorManagerImpl

 * Method:    _initSensors

 * Signature: ([Ljava/lang/String;)I

 */

JNIEXPORT jint JNICALL Java_com_nokia_mj_impl_sensor_SensorManagerImpl__1initSensors

(JNIEnv* aJniEnv, jobject, jobject aSensorIdVector)

{

    JELOG2(ESensor);

    SensorConnectionList* sensorConnectionList = new SensorConnectionList();

    if (!sensorConnectionList)

    {

        return ERROR_NOMEMORY;

    }

    // ownership of char** is received

    int sensorCount = 0;

    jchar** sensors = sensorConnectionList->InitSensors(&sensorCount);

    if (!sensors)

    {

        freeSensorArray(sensors, sensorCount);

        return ERROR_GENERAL;

    }

    jmethodID addElement =

        aJniEnv->GetMethodID(

            aJniEnv->GetObjectClass(aSensorIdVector),

            "addElement",

            "(Ljava/lang/Object;)V");

    if (HandleException(*aJniEnv) < ERROR_NONE)

    {

        freeSensorArray(sensors, sensorCount);

        return ERROR_GENERAL;

    }

    for (int i = 0; i < sensorCount; i++)

    {

        int strLength = 0;

        while (sensors[ i ][ strLength++ ] != '\0') {};

        jstring javaString = aJniEnv->NewString(sensors[ i ], strLength);

        // If NewStringUTF fails to allocate memory it returns NULL and throws OutOfMemoryError

        if (!javaString)

        {

            freeSensorArray(sensors, sensorCount);

            // OutOfMemoryError thrown on java side

            return ERROR_NOMEMORY;

        }

        aJniEnv->CallVoidMethod(aSensorIdVector, addElement, javaString);

    }

    freeSensorArray(sensors, sensorCount);

    return reinterpret_cast<int>(sensorConnectionList);

}

/*

 * Class:     com_nokia_mj_impl_sensor_SensorManagerImpl

 * Method:    _dispose

 * Signature: (I)V

 */

JNIEXPORT void JNICALL Java_com_nokia_mj_impl_sensor_SensorManagerImpl__1dispose

(JNIEnv *, jobject, jint aSensorList)

{

    JELOG2(ESensor);

    SensorConnectionList* senList = reinterpret_cast< SensorConnectionList* >(aSensorList);

    delete senList;

}