diff -r 8b2d6d0384b0 -r d9aefe59d544 camerauis/cameraxui/cxengine/inc/api/cxecameradevicecontrol.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraxui/cxengine/inc/api/cxecameradevicecontrol.h	Fri Apr 16 14:51:30 2010 +0300
@@ -0,0 +1,125 @@
+/*
+* 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:
+*
+*/
+#ifndef CXECAMERADEVICECONTROL_H
+#define CXECAMERADEVICECONTROL_H
+
+#include <QObject>
+#include "cxenamespace.h"
+#include "cxeerror.h"
+
+class CxeViewfinderControl;
+
+/**
+ * CxeCameraDeviceControl is responsible for reserving and powering on the camera module.
+ * It also routes all camera adaptation events to other engine internal controls.
+ * The device control API is also used to control the operating mode (Cxe::CameraMode) of
+ * the engine
+ */
+class CxeCameraDeviceControl : public QObject
+{
+    Q_OBJECT
+public:
+
+    /**
+     * Camera device control state.
+     */
+    enum State
+        {
+        //! Camera power off/unreserved
+        Idle            = 0x01,
+
+        //! Reserving and powering on camera
+        Initializing    = 0x02,
+        
+        //! Camera device is reserved and powered on
+        Ready           = 0x04,
+
+        //! Camera device release pending
+        PendingRelease  = 0x08
+        };
+
+    /**
+     * Get current camera mode.
+     */
+    virtual Cxe::CameraMode mode() const = 0;
+
+    /**
+     * Set current camera mode.
+     */
+    virtual void setMode(Cxe::CameraMode mode) = 0;
+
+    virtual void init() = 0;
+
+    /**
+     * Reserve camera device for exclusive use.
+     */
+    virtual void reserve() = 0;
+
+    /**
+     * Cancel all operations and release camera for other applications to use.
+     * Camera module is also powered off.
+     */
+    virtual void release() = 0;
+
+    /**
+     * Get current camera index (primary or secondary).
+     *
+     * @return Current camera index
+     */
+    virtual Cxe::CameraIndex cameraIndex() const = 0;
+
+    /**
+     * Switch between primary and secondary camera.
+     *
+     * @param index New camera index
+     */
+    virtual CxeError::Id switchCamera(Cxe::CameraIndex index) = 0;
+
+    /**
+     * Get current device control state.
+     *
+     * @return Current state
+     */
+    virtual State state() const = 0;
+
+signals:
+    /**
+     * Initializing current mode has completed. The engine is now ready to capture
+     * images or videos (unless a non-zero error code was given.
+     *
+     * @param error Error code
+     */
+    void initModeComplete(CxeError::Id error);
+
+    /**
+     * Camera device control state has changed.
+     *
+     * @param newState New device control state
+     * @param error    Error code
+     */
+    void stateChanged(CxeCameraDeviceControl::State newState, CxeError::Id error);
+
+protected:
+    CxeCameraDeviceControl() {}
+
+private:
+    Q_DISABLE_COPY(CxeCameraDeviceControl)
+};
+
+Q_DECLARE_METATYPE(CxeCameraDeviceControl::State)
+
+#endif // CXECAMERADEVICECONTROL_H