/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef MGRAPHICSSYSTEM_H
#define MGRAPHICSSYSTEM_H

#include <private/qgraphicssystem_p.h>
#include <EGL/egl.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>

extern "C" typedef void (*QMeeGoSwitchCallback)(int type, const char *name);

class QMeeGoGraphicsSystem : public QGraphicsSystem
{
public:
    enum SwitchPolicy { AutomaticSwitch, ManualSwitch, NoSwitch };

    QMeeGoGraphicsSystem();
    ~QMeeGoGraphicsSystem();

    virtual QWindowSurface *createWindowSurface(QWidget *widget) const;
    virtual QPixmapData *createPixmapData(QPixmapData::PixelType) const;
    virtual QPixmapData *createPixmapData(QPixmapData *origin);

    static QPixmapData *wrapPixmapData(QPixmapData *pmd);
    static void setSurfaceFixedSize(int width, int height);
    static void setSurfaceScaling(int x, int y, int width, int height);
    static void setTranslucent(bool translucent);

    static QPixmapData *pixmapDataFromEGLSharedImage(Qt::HANDLE handle, const QImage &softImage);
    static QPixmapData *pixmapDataFromEGLImage(Qt::HANDLE handle);
    static QPixmapData *pixmapDataWithGLTexture(int w, int h);
    static void updateEGLSharedImagePixmap(QPixmap *pixmap);

    static QPixmapData *pixmapDataWithNewLiveTexture(int w, int h, QImage::Format format);
    static QPixmapData *pixmapDataFromLiveTextureHandle(Qt::HANDLE handle);
    static QImage *lockLiveTexture(QPixmap* pixmap, void* fenceSync);
    static bool releaseLiveTexture(QPixmap *pixmap, QImage *image);
    static Qt::HANDLE getLiveTextureHandle(QPixmap *pixmap);

    static void* createFenceSync();
    static void destroyFenceSync(void* fenceSync);

    static void switchToRaster();
    static void switchToMeeGo();
    static QString runningGraphicsSystemName();

    static void registerSwitchCallback(QMeeGoSwitchCallback callback);

    static SwitchPolicy switchPolicy;

private:
    static bool meeGoRunning();
    static EGLSurface getSurfaceForLiveTexturePixmap(QPixmap *pixmap);
    static void destroySurfaceForLiveTexturePixmap(QPixmapData* pmd);
    static void triggerSwitchCallbacks(int type, const char *name);

    static bool surfaceWasCreated;
    static QHash<Qt::HANDLE, QPixmap*> liveTexturePixmaps;
    static QList<QMeeGoSwitchCallback> switchCallbacks;
};

/* C api */

extern "C" {
    Q_DECL_EXPORT int qt_meego_image_to_egl_shared_image(const QImage &image);
    Q_DECL_EXPORT QPixmapData* qt_meego_pixmapdata_from_egl_shared_image(Qt::HANDLE handle, const QImage &softImage);
    Q_DECL_EXPORT QPixmapData* qt_meego_pixmapdata_with_gl_texture(int w, int h);
    Q_DECL_EXPORT void qt_meego_update_egl_shared_image_pixmap(QPixmap *pixmap);
    Q_DECL_EXPORT bool qt_meego_destroy_egl_shared_image(Qt::HANDLE handle);
    Q_DECL_EXPORT void qt_meego_set_surface_fixed_size(int width, int height);
    Q_DECL_EXPORT void qt_meego_set_surface_scaling(int x, int y, int width, int height);
    Q_DECL_EXPORT void qt_meego_set_translucent(bool translucent);
    Q_DECL_EXPORT QPixmapData* qt_meego_pixmapdata_with_new_live_texture(int w, int h, QImage::Format format);
    Q_DECL_EXPORT QPixmapData* qt_meego_pixmapdata_from_live_texture_handle(Qt::HANDLE handle);
    Q_DECL_EXPORT QImage* qt_meego_live_texture_lock(QPixmap *pixmap, void *fenceSync);
    Q_DECL_EXPORT bool qt_meego_live_texture_release(QPixmap *pixmap, QImage *image);
    Q_DECL_EXPORT Qt::HANDLE qt_meego_live_texture_get_handle(QPixmap *pixmap);
    Q_DECL_EXPORT void* qt_meego_create_fence_sync(void);
    Q_DECL_EXPORT void qt_meego_destroy_fence_sync(void* fs);
    Q_DECL_EXPORT void qt_meego_invalidate_live_surfaces(void);
    Q_DECL_EXPORT void qt_meego_switch_to_raster(void);
    Q_DECL_EXPORT void qt_meego_switch_to_meego(void);
    Q_DECL_EXPORT void qt_meego_register_switch_callback(QMeeGoSwitchCallback callback);
    Q_DECL_EXPORT void qt_meego_set_switch_policy(int policy);
}

#endif