Added VideoLight camera flash mode.

Unlike the torch mode, it's enabled only while camera is active.

Change-Id: Ib92349ac190586c5aa8e49a8fddbdf937e757fd0
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

src/imports/multimedia/qdeclarativecamera_p.h

@@ -149,6 +149,7 @@ public:
         FlashRedEyeReduction = QCameraExposure::FlashRedEyeReduction,
         FlashFill = QCameraExposure::FlashFill,
         FlashTorch = QCameraExposure::FlashTorch,
+        FlashVideoLight = QCameraExposure::FlashVideoLight,
         FlashSlowSyncFrontCurtain = QCameraExposure::FlashSlowSyncFrontCurtain,
         FlashSlowSyncRearCurtain = QCameraExposure::FlashSlowSyncRearCurtain,
         FlashManual = QCameraExposure::FlashManual

src/multimedia/camera/qcameraexposure.cpp

@@ -610,7 +610,10 @@ void QCameraExposure::setAutoShutterSpeed()
     \value FlashAuto            Automatic flash.
     \value FlashRedEyeReduction Red eye reduction flash.
     \value FlashFill            Use flash to fillin shadows.
-    \value FlashTorch           Constant light source, useful for focusing and video capture.
+    \value FlashTorch           Constant light source. If supported,
+                                torch can be enabled without loading the camera.
+    \value FlashVideoLight      Constant light source, useful for video capture.
+                                The light is turned on only while camera is active.
     \value FlashSlowSyncFrontCurtain
                                 Use the flash in conjunction with a slow shutter speed.
                                 This mode allows better exposure of distant objects and/or motion blur effect.

src/multimedia/camera/qcameraexposure.h

@@ -78,9 +78,10 @@ public:
         FlashRedEyeReduction  = 0x8,
         FlashFill = 0x10,
         FlashTorch = 0x20,
-        FlashSlowSyncFrontCurtain = 0x40,
-        FlashSlowSyncRearCurtain = 0x80,
-        FlashManual = 0x100
+        FlashVideoLight = 0x40,
+        FlashSlowSyncFrontCurtain = 0x80,
+        FlashSlowSyncRearCurtain = 0x100,
+        FlashManual = 0x200
     };
     Q_DECLARE_FLAGS(FlashModes, FlashMode)