/**
 * Neave Camera
 * 
 * Copyright (C) 2008 Paul Neave
 * http://www.neave.com/
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation at http://www.gnu.org/licenses/gpl.html
 */

package com.neave.media
{
	import flash.events.*;
	import flash.media.*;
	import flash.system.*;
	
	public class NeaveCamera
	{
		/**
		 * The requested width of the camera object
		 */
		static public var CAMERA_WIDTH:int = 480;
		
		/**
		 * The requested height of the camera object
		 */
		static public var CAMERA_HEIGHT:int = 360;
		
		static private var cam:Camera;
		
		public function NeaveCamera() { }
		
		/**
		 * Sets up and returns the camera object
		 * 
		 * @return	A camera object
		 */
		static public function getCamera():Camera
		{
			// Return the same camera if it has been successfully requested before
			if (cam != null)
			{
				if (cam.muted) Security.showSettings(SecurityPanel.PRIVACY);
				return cam;
			}
			
			// Get the camera
			cam = Camera.getCamera();
			if (cam != null)
			{
				// Set properties if a camera was found
				cam.setMode(CAMERA_WIDTH, CAMERA_HEIGHT, 30, true);
				cam.addEventListener(StatusEvent.STATUS, NeaveCamera.statusListener);
				return cam;
			}
			else
			{
				// No camera found
				Security.showSettings(SecurityPanel.CAMERA);
				return new Camera();
			}
		}
		
		/**
		 * Whether the camera object is available or not
		 */
		static public function get muted():Boolean
		{
			return cam == null || cam.muted || cam.name == null || cam.width == 0;
		}
		
		/**
		 * Camera status response
		 */
		static private function statusListener(e:StatusEvent):void
		{
			if (e.code == "Camera.Unmuted") Security.showSettings(SecurityPanel.CAMERA);
		}
	}
}