mainform.cs

一个非常完整的网络会议系统

/******************************************************
                  DirectShow .NET
		      [e-mail]
*******************************************************/
//				SampleGrabber MainForm

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
using System.IO;
using System.Diagnostics;
using System.Net.Sockets ;
using System.Net;
//using System.IO;
using DShowNET;
using DShowNET.Device;


namespace SampleGrabberNET
{

/// <summary> Summary description for MainForm. </summary>
public class MainForm : System.Windows.Forms.Form, ISampleGrabberCB
{
	private System.Windows.Forms.Splitter splitter1;
	private System.Windows.Forms.ToolBar toolBar;
	private System.Windows.Forms.Panel videoPanel;
	private System.Windows.Forms.Panel stillPanel;
	private System.Windows.Forms.PictureBox pictureBox;
	private System.Windows.Forms.ToolBarButton toolBarBtnTune;
	private System.Windows.Forms.ToolBarButton toolBarBtnGrab;
	private System.Windows.Forms.ToolBarButton toolBarBtnSave;
	private System.Windows.Forms.ToolBarButton toolBarBtnSep;
	private System.Windows.Forms.ImageList imgListToolBar;
	private System.Windows.Forms.MainMenu mainMenu1;
	private System.Windows.Forms.MenuItem menuItem1;
	private System.Windows.Forms.MenuItem menuItem2;
	private System.Windows.Forms.Timer timer1;
	private System.Windows.Forms.TextBox textBox1;
	private System.Windows.Forms.Label label1;
	private System.Windows.Forms.Label label2;
	private System.Windows.Forms.MenuItem menuItem3;
	private System.Windows.Forms.NotifyIcon notifyIcon1;
	private System.Windows.Forms.ContextMenu contextMenu1;
	private System.Windows.Forms.MenuItem menuItem4;
	private System.ComponentModel.IContainer components;

	public MainForm()
	{
		// Required for Windows Form Designer support
		InitializeComponent();
	}

	/// <summary> Clean up any resources being used. </summary>
	protected override void Dispose( bool disposing )
	{
		if( disposing )
		{
			CloseInterfaces();
			
			if (components != null) 
			{
				components.Dispose();
			}
		}
		base.Dispose( disposing );
	}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(MainForm));
			this.toolBar = new System.Windows.Forms.ToolBar();
			this.toolBarBtnTune = new System.Windows.Forms.ToolBarButton();
			this.toolBarBtnGrab = new System.Windows.Forms.ToolBarButton();
			this.toolBarBtnSep = new System.Windows.Forms.ToolBarButton();
			this.toolBarBtnSave = new System.Windows.Forms.ToolBarButton();
			this.imgListToolBar = new System.Windows.Forms.ImageList(this.components);
			this.videoPanel = new System.Windows.Forms.Panel();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.stillPanel = new System.Windows.Forms.Panel();
			this.label2 = new System.Windows.Forms.Label();
			this.pictureBox = new System.Windows.Forms.PictureBox();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.timer1 = new System.Windows.Forms.Timer(this.components);
			this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);
			this.contextMenu1 = new System.Windows.Forms.ContextMenu();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.stillPanel.SuspendLayout();
			this.SuspendLayout();
			// 
			// toolBar
			// 
			this.toolBar.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
																					   this.toolBarBtnTune,
																					   this.toolBarBtnGrab,
																					   this.toolBarBtnSep,
																					   this.toolBarBtnSave});
			this.toolBar.Cursor = System.Windows.Forms.Cursors.Hand;
			this.toolBar.DropDownArrows = true;
			this.toolBar.ImageList = this.imgListToolBar;
			this.toolBar.Location = new System.Drawing.Point(0, 0);
			this.toolBar.Name = "toolBar";
			this.toolBar.ShowToolTips = true;
			this.toolBar.Size = new System.Drawing.Size(610, 42);
			this.toolBar.TabIndex = 0;
			this.toolBar.Visible = false;
			this.toolBar.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar_ButtonClick);
			// 
			// toolBarBtnTune
			// 
			this.toolBarBtnTune.Enabled = false;
			this.toolBarBtnTune.ImageIndex = 0;
			this.toolBarBtnTune.Text = "Tune";
			this.toolBarBtnTune.ToolTipText = "TV tuner dialog";
			// 
			// toolBarBtnGrab
			// 
			this.toolBarBtnGrab.ImageIndex = 1;
			this.toolBarBtnGrab.Text = "Grab";
			this.toolBarBtnGrab.ToolTipText = "Grab picture from stream";
			// 
			// toolBarBtnSep
			// 
			this.toolBarBtnSep.Enabled = false;
			this.toolBarBtnSep.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// toolBarBtnSave
			// 
			this.toolBarBtnSave.Enabled = false;
			this.toolBarBtnSave.ImageIndex = 2;
			this.toolBarBtnSave.Text = "Save";
			this.toolBarBtnSave.ToolTipText = "Save image to file";
			// 
			// imgListToolBar
			// 
			this.imgListToolBar.ColorDepth = System.Windows.Forms.ColorDepth.Depth32Bit;
			this.imgListToolBar.ImageSize = new System.Drawing.Size(16, 16);
			this.imgListToolBar.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imgListToolBar.ImageStream")));
			this.imgListToolBar.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// videoPanel
			// 
			this.videoPanel.BackColor = System.Drawing.Color.Black;
			this.videoPanel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.videoPanel.Dock = System.Windows.Forms.DockStyle.Left;
			this.videoPanel.Location = new System.Drawing.Point(0, 42);
			this.videoPanel.Name = "videoPanel";
			this.videoPanel.Size = new System.Drawing.Size(328, 241);
			this.videoPanel.TabIndex = 1;
			this.videoPanel.Resize += new System.EventHandler(this.videoPanel_Resize);
			// 
			// splitter1
			// 
			this.splitter1.Location = new System.Drawing.Point(328, 42);
			this.splitter1.Name = "splitter1";
			this.splitter1.Size = new System.Drawing.Size(5, 241);
			this.splitter1.TabIndex = 2;
			this.splitter1.TabStop = false;
			// 
			// stillPanel
			// 
			this.stillPanel.AutoScroll = true;
			this.stillPanel.AutoScrollMargin = new System.Drawing.Size(8, 8);
			this.stillPanel.AutoScrollMinSize = new System.Drawing.Size(32, 32);
			this.stillPanel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.stillPanel.Controls.Add(this.label2);
			this.stillPanel.Controls.Add(this.pictureBox);
			this.stillPanel.Controls.Add(this.textBox1);
			this.stillPanel.Controls.Add(this.label1);
			this.stillPanel.Dock = System.Windows.Forms.DockStyle.Fill;
			this.stillPanel.Location = new System.Drawing.Point(333, 42);
			this.stillPanel.Name = "stillPanel";
			this.stillPanel.Size = new System.Drawing.Size(277, 241);
			this.stillPanel.TabIndex = 3;
			// 
			// label2
			// 
			this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
			this.label2.Location = new System.Drawing.Point(16, 120);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(224, 48);
			this.label2.TabIndex = 6;
			this.label2.Text = "Paused";
			// 
			// pictureBox
			// 
			this.pictureBox.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox.Image")));
			this.pictureBox.Location = new System.Drawing.Point(-16, 48);
			this.pictureBox.Name = "pictureBox";
			this.pictureBox.Size = new System.Drawing.Size(627, 395);
			this.pictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
			this.pictureBox.TabIndex = 0;
			this.pictureBox.TabStop = false;
			this.pictureBox.Visible = false;
			// 
			// textBox1
			// 
			this.textBox1.BackColor = System.Drawing.Color.White;
			this.textBox1.Dock = System.Windows.Forms.DockStyle.Top;
			this.textBox1.Location = new System.Drawing.Point(0, 23);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(619, 20);
			this.textBox1.TabIndex = 4;
			this.textBox1.Text = "224.100.0.1";
			this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
			// 
			// label1
			// 
			this.label1.Dock = System.Windows.Forms.DockStyle.Top;
			this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
			this.label1.Location = new System.Drawing.Point(0, 0);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(619, 23);
			this.label1.TabIndex = 5;
			this.label1.Text = "Group";
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1,
																					  this.menuItem2,
																					  this.menuItem3});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.Text = "Start";
			this.menuItem1.Click += new System.EventHandler(this.menuItem1_Click);
			// 
			// menuItem2
			// 
			this.menuItem2.Enabled = false;
			this.menuItem2.Index = 1;
			this.menuItem2.Text = "Stop";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 2;
			this.menuItem3.Text = "Hide";
			this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
			// 
			// timer1
			// 
			this.timer1.Interval = 300;
			this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
			// 
			// notifyIcon1
			// 
			this.notifyIcon1.ContextMenu = this.contextMenu1;
			this.notifyIcon1.Icon = ((System.Drawing.Icon)(resources.GetObject("notifyIcon1.Icon")));
			this.notifyIcon1.Text = "Multicast Conference System";
			this.notifyIcon1.Visible = true;
			this.notifyIcon1.DoubleClick += new System.EventHandler(this.notifyIcon1_DoubleClick);
			// 
			// contextMenu1
			// 
			this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						 this.menuItem4});
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 0;
			this.menuItem4.Text = "Show";
			this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
			// 
			// MainForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(610, 283);
			this.Controls.Add(this.stillPanel);
			this.Controls.Add(this.splitter1);
			this.Controls.Add(this.videoPanel);
			this.Controls.Add(this.toolBar);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.Menu = this.mainMenu1;
			this.Name = "MainForm";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Video Conference";
			this.TopMost = true;
			this.Closing += new System.ComponentModel.CancelEventHandler(this.MainForm_Closing);
			this.Load += new System.EventHandler(this.MainForm_Load);
			this.Activated += new System.EventHandler(this.MainForm_Activated);
			this.stillPanel.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

	/// <summary>
	/// The main entry point for the application.
	/// </summary>
	[STAThread]
//	static void Main() 
//	{
//		Application.Run(new MainForm());
//	}

	private void MainForm_Closing(object sender, System.ComponentModel.CancelEventArgs e)
	{
		this.Hide ();
		e.Cancel = true;
//		this.Hide();
//		CloseInterfaces();
	}

		/// <summary> detect first form appearance, start grabber. </summary>
	private void MainForm_Activated(object sender, System.EventArgs e)
	{
		if( firstActive )
			return;
		firstActive = true;

		if( ! DsUtils.IsCorrectDirectXVersion() )
		{
			MessageBox.Show( this, "DirectX 8.1 NOT installed!", "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop );
			this.Close(); return;
		}

		if( ! DsDev.GetDevicesOfCat( FilterCategory.VideoInputDevice, out capDevices ) )
		{
			MessageBox.Show( this, "No video capture devices found!", "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop );
			this.Close(); return;
		}

		DsDevice dev = null;
		if( capDevices.Count == 1 )
			dev = capDevices[0] as DsDevice;
		else
		{
			DeviceSelector selector = new DeviceSelector( capDevices );
			selector.ShowDialog( this );
			dev = selector.SelectedDevice;
		}

		if( dev == null )
		{
			this.Close(); return;
		}

		if( ! StartupVideo( dev.Mon ) )
			this.Close();
	}

	private void videoPanel_Resize(object sender, System.EventArgs e)
	{
		ResizeVideoWindow();
	}


		/// <summary> handler for toolbar button clicks. </summary>
	private void toolBar_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
	{
		try
		{
			Trace.WriteLine( "!!BTN: toolBar_ButtonClick" );
		
			int hr;
			if( sampGrabber == null )
				return;

			Trace.WriteLine( "!!BTN: toolBarBtnGrab" );

			if( savedArray == null )
			{
				int size = videoInfoHeader.BmiHeader.ImageSize;
				if( (size < 1000) || (size > 16000000) )
					return;
				savedArray = new byte[ size + 64000 ];
			}

			toolBarBtnSave.Enabled = false;
			Image old = pictureBox.Image;
			//pictureBox.Image = null;
			if( old != null )
				old.Dispose();

			toolBarBtnGrab.Enabled = false;
			captured = false;
			hr = sampGrabber.SetCallback( this, 1 );
			Trace.WriteLine( "!!BTN: toolBarBtnSave" );

			if( capGraph != null )
				DsUtils.ShowTunerPinDialog( capGraph, capFilter, this.Handle );
		}
		catch (Exception){}
	}

		/// <summary> capture event, triggered by buffer callback. </summary>
	void OnCaptureDone()
	{
	try {
		Trace.WriteLine( "!!DLG: OnCaptureDone" );
	
			toolBarBtnGrab.Enabled = true;
			int hr;
			if( sampGrabber == null )
				return;
			hr = sampGrabber.SetCallback( null, 0 );

			int w = videoInfoHeader.BmiHeader.Width;
			int h = videoInfoHeader.BmiHeader.Height;
			if( ((w & 0x03) != 0) || (w < 32) || (w > 4096) || (h < 32) || (h > 4096) )
				return;
			int stride = w * 3;

			GCHandle handle = GCHandle.Alloc( savedArray, GCHandleType.Pinned );
			int scan0 = (int) handle.AddrOfPinnedObject();
			scan0 += (h - 1) * stride;
			Bitmap b = new Bitmap( w, h, -stride, PixelFormat.Format24bppRgb, (IntPtr) scan0 );
			handle.Free();
			savedArray = null;
			Image old = pictureBox.Image;
			pictureBox.Image = b;
			if( old != null )
				old.Dispose();
			toolBarBtnSave.Enabled = true;
		}
		catch( Exception)
		{
		}
	}



		/// <summary> start all the interfaces, graphs and preview window. </summary>
	bool StartupVideo( UCOMIMoniker mon )
	{
		int hr;
		try {
			if( ! CreateCaptureDevice( mon ) )
				return false;