/*

 * Copyright (c) 2009 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:

 *

 */

#include <QApplication>

#include "cxutils.h"

#include "cxeengine.h"

#include "cxecameradevicecontrol.h"

#include "cxestillcapturecontrol.h"

#include "cxevideocapturecontrol.h"

#include "cxuiserviceprovider.h"

#include "cxesettings.h"

CxuiServiceProvider* CxuiServiceProvider::mInstance = NULL;

// TODO: get these constants from header <xqaiwdecl.h>

// will be released wk16

const QString CXUI_SERVICE_NAME = "cxui.com.nokia.symbian.ICameraCapture";

const QString CAMERA_INDEX = "CameraIndex";

const QString QUALITY = "Quality";

const QString ALLOW_MODE_SWITCH = "AllowModeSwitch";

const QString ALLOW_CAMERA_SWITCH = "AllowCameraSwitch";

const QString ALLOW_QUALITY_CHANGE = "AllowQualityChange";

CxuiServiceProvider::CxuiServiceProvider(CxeEngine *engine)

:

    XQServiceProvider(CXUI_SERVICE_NAME),

    mRequestIndex(-1),

    mEngine(engine),

    mRequestedMode(Cxe::ImageMode),

    mCameraIndex(0),

    mQuality(0),

    mAllowModeSwitching(true),

    mAllowQualityChange(true),

    mAllowCameraSwitching(true)

{

    CX_DEBUG_ENTER_FUNCTION();

    publishAll();

    CX_DEBUG_EXIT_FUNCTION();

}

CxuiServiceProvider::~CxuiServiceProvider()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mRequestIndex != -1) {

        CX_DEBUG(("Request still active..."));

        // Complete request now, this will return error to client

        completeRequest(mRequestIndex, QString());

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * Creates singleton instance of service provider.

 */

void CxuiServiceProvider::create(CxeEngine* engine)

{

    if (mInstance == NULL) {

        mInstance = new CxuiServiceProvider(engine);

    }

}

/*!

 * Returns singleton instance of service provider.

 *

 */

CxuiServiceProvider* CxuiServiceProvider::instance()

{

    return mInstance;

}

/*!

 * Deletes singleton instance of service provider.

 */

void CxuiServiceProvider::destroy()

{

    delete mInstance;

    mInstance = NULL;

}

/*!

 * Returns true if camera is started by another application.

 *

 * "Embedded" in camera means that the camera is started as a service

 * by another application using QtHighway. It doesn't necessarily

 * mean that camera is actually embedded (=window groups chained). The

 * distinction between embedded and non-embedded service is not relevant on

 * camera side, it's more meaningful to the client app.

 *

 */

bool CxuiServiceProvider::isCameraEmbedded()

{

    return mInstance != NULL;

}

/*!

 *

 */

Cxe::CameraMode CxuiServiceProvider::requestedMode()

{

    return mRequestedMode;

}

/*!

 *

 */

bool CxuiServiceProvider::allowModeSwitching()

{

    return mAllowModeSwitching;

}

/*!

 *

 */

bool CxuiServiceProvider::allowQualityChange()

{

    return mAllowQualityChange;

}

/*!

 *

 */

bool CxuiServiceProvider::allowCameraSwitching()

{

    return mAllowCameraSwitching;

}

/*!

 *

 */

void CxuiServiceProvider::sendFilenameToClientAndExit(QString filename)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mRequestIndex == -1) {

        CX_DEBUG(("CxuiServiceProvider: no request in progress"));

        QCoreApplication::instance()->quit();

        return;

    }

    connect(this, SIGNAL(returnValueDelivered()), QCoreApplication::instance(), SLOT(quit()));

    CX_DEBUG(("CxuiServiceProvider: completing request"));

    if (!completeRequest(mRequestIndex, QVariant(filename))) {

        // if request completion fails call quit immediately because signal is not coming

        QCoreApplication::instance()->quit();

    }

    mRequestIndex = -1;

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiServiceProvider::capture(int mode, const QVariantMap &parameters)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mRequestIndex != -1) {

        // only one request can be active at once

        CX_DEBUG(("Request already active, ignoring"));

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    // read options from map

    if (!readParameters(parameters)) {

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    if (mCameraIndex < 0 || mCameraIndex > 1) {

        CX_DEBUG(("Invalid camera index"));

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    mRequestIndex = setCurrentRequestAsync();

    mEngine->cameraDeviceControl().switchCamera(static_cast<Cxe::CameraIndex> (mCameraIndex));

    if (mode == 0) {

        CX_DEBUG(("Image capture requested"));

        mRequestedMode = Cxe::ImageMode;

    }

    else {

        CX_DEBUG(("Video capture requested"));

        mRequestedMode = Cxe::VideoMode;

    }

    if (mQuality == 1) {

        // set image quality to lowest

        int imageQualityIndex = mEngine->stillCaptureControl().supportedImageQualities().size() - 1;

        CX_DEBUG(("Setting image quality to lowest, index=%d", imageQualityIndex));

        mEngine->settings().set(CxeSettingIds::IMAGE_QUALITY, imageQualityIndex);

        // set video quality to lowest

        int videoQualityIndex = mEngine->videoCaptureControl().supportedVideoQualities().size() - 1;

        CX_DEBUG(("Setting video quality to lowest, index=%d", videoQualityIndex));

        mEngine->settings().set(CxeSettingIds::VIDEO_QUALITY, videoQualityIndex);

    } else if (mQuality == 2) {

        // set image quality to highest

        CX_DEBUG(("Setting image quality to highest, index=0"));

        mEngine->settings().set(CxeSettingIds::IMAGE_QUALITY, 0);

        // set video quality to highest

        CX_DEBUG(("Setting video quality to highest, index=0"));

        mEngine->settings().set(CxeSettingIds::VIDEO_QUALITY, 0);

    }

    mEngine->initMode(mRequestedMode);

    CX_DEBUG_EXIT_FUNCTION();

}

bool CxuiServiceProvider::readParameters(const QVariantMap& parameters)

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG(("Reading parameters"));

    bool ok;

    mCameraIndex = parameters[CAMERA_INDEX].toInt(&ok);

    if (!ok) {

        CX_DEBUG(("Error reading parameter %s", CAMERA_INDEX.toAscii().constData()));

        CX_DEBUG_EXIT_FUNCTION();

        return false;

    }

    mQuality = parameters[QUALITY].toInt(&ok);

    if (!ok) {

        CX_DEBUG(("Error reading parameter %s", CAMERA_INDEX.toAscii().constData()));

        CX_DEBUG_EXIT_FUNCTION();

        return false;

    }

    mAllowModeSwitching = parameters[ALLOW_MODE_SWITCH].toBool();

    mAllowQualityChange = parameters[ALLOW_QUALITY_CHANGE].toBool();

    mAllowCameraSwitching = parameters[ALLOW_CAMERA_SWITCH].toBool();

    CX_DEBUG_EXIT_FUNCTION();

    return true;

}