Backup/motion/VideoSource/JPEGStream.cs

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// Motion Detector
//
// Copyright ?Andrew Kirillov, 2005
// andrew.kirillov@gmail.com
//
namespace VideoSource
{
	using System;
	using System.Drawing;
	using System.IO;
	using System.Threading;
	using System.Net;

	/// <summary>
	/// JPEGSource - JPEG downloader
	/// </summary>
	public class JPEGStream : IVideoSource
	{
		private string	source;
		private string	login = null;
		private string	password = null;
		private object	userData = null;
		private int		framesReceived;
		private int		bytesReceived;
		private bool	useSeparateConnectionGroup = false;
		private bool	preventCaching = false;
		private int		frameInterval = 0;		// frame interval in miliseconds

		private const int	bufSize = 512 * 1024;	// buffer size
		private const int	readSize = 1024;		// portion size to read

		private Thread	thread = null;
		private ManualResetEvent stopEvent = null;

		// new frame event
		public event CameraEventHandler NewFrame;

		// SeparateConnectioGroup property
		// indicates to open WebRequest in separate connection group
		public bool	SeparateConnectionGroup
		{
			get { return useSeparateConnectionGroup; }
			set { useSeparateConnectionGroup = value; }
		}
		// PreventCaching property
		// If the property is set to true, we are trying to prevent caching
		// appneding fake parameter to URL. It's needed is client is behind
		// proxy server.
		public bool	PreventCaching
		{
			get { return preventCaching; }
			set { preventCaching = value; }
		}
		// FrameInterval property - interval between frames
		// If the property is set 100, than the source will produce 10 frames
		// per second if it possible
		public int FrameInterval
		{
			get { return frameInterval; }
			set { frameInterval = value; }