摄像头程序

摄像头程序 using System; using System.Runtime.InteropServices; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Drawing.Imaging; using System.Text; using System.Windows.Forms; namespace WindowsApplication5 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } public class Pick { private const int WM_USER = 0x400; private const int WS_CHILD = 0x40000000; private const int WS_VISIBLE = 0x10000000; private const int WM_CAP_START = WM_USER; private const int WM_CAP_STOP = WM_CAP_START + 68; private const int WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10; private const int WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11; private const int WM_CAP_SAVEDIB = WM_CAP_START + 25; private const int WM_CAP_GRAB_FRAME = WM_CAP_START + 60; private const int WM_CAP_SEQUENCE = WM_CAP_START + 62; private const int WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20; private const int WM_CAP_SEQUENCE_NOFILE = WM_CAP_START + 63; private const int WM_CAP_SET_OVERLAY = WM_CAP_START + 51; private const int WM_CAP_SET_PREVIEW = WM_CAP_START + 50; private const int WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START + 6; private const int WM_CAP_SET_CALLBACK_ERROR = WM_CAP_START + 2; private const int WM_CAP_SET_CALLBACK_STATUSA = WM_CAP_START + 3; private const int WM_CAP_SET_CALLBACK_FRAME = WM_CAP_START + 5; private const int WM_CAP_SET_SCALE = WM_CAP_START + 53; private const int WM_CAP_SET_PREVIEWRATE = WM_CAP_START + 52; public static int WM_CAP_DLG_VIDEOSOURCE = (WM_CAP_START + 42); //选择 摄像头 private IntPtr hWndC; private bool bStat = false; private IntPtr mControlPtr; private int mWidth; private int mHeight; private int mLeft; private int mTop; ///

/// 初始化摄像头 ///

/// 控件的句柄 /// 开始显示的左边距 /// 开始显示的上边距 /// 要显示的宽度 /// 要显示的长度 public Pick(IntPtr handle, int left, int top, int width, int height) { mControlPtr = handle; mWidth = width; mHeight = height; mLeft = left; mTop = top; } [DllImport( "avicap32.dll ")] private static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID); [DllImport( "avicap32.dll ")] private static extern int capGetVideoFormat(IntPtr hWnd, IntPtr psVideoFormat, int wSize); [DllImport( "User32.dll ")] private static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam); ///

/// 开始显示图像 ///

public void Start() { if (bStat) return; bStat = true; byte[] lpszName = new byte[100]; hWndC = capCreateCaptureWindowA(lpszName, WS_CHILD | WS_VISIBLE, mLeft, mTop, mWidth, mHeight, mControlPtr, 0); if (hWndC.ToInt32() != 0) { SendMessage(hWndC, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0); SendMessage(hWndC, WM_CAP_SET_CALLBACK_ERROR, 0, 0); SendMessage(hWndC, WM_CAP_SET_CALLBACK_STATUSA, 0, 0); SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, 0, 0); SendMessage(hWndC, WM_CAP_SET_SCALE, 1, 0); SendMessage(hWndC, WM_CAP_SET_PREVIEWRATE, 66, 0); SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0); SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0); } return; } ///

/// 停止显示 ///

public void Stop() { SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, 0, 0); bStat = false; } ///

/// 抓图 ///

/// 要保存bmp文件的路径 public void GrabImage(string path) { IntPtr hBmp = Marshal.StringToHGlobalAnsi(path); SendMessage(hWndC, WM_CAP_SAVEDIB, 0, hBmp.ToInt32()); } ///

/// 录像 ///

/// 要保存avi文件的路径 public void Kinescope(string path) { IntPtr hBmp = Marshal.StringToHGlobalAnsi(path); SendMessage(hWndC, WM_CAP_FILE_SET_CAPTURE_FILEA, 0, hBmp.ToInt32()); SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0); } ///

/// 停止录像 ///

public void StopKinescope() { SendMessage(hWndC, WM_CAP_STOP, 0, 0); } ///

/// ///

public void SetShow() { SendMessage(hWndC, WM_CAP_DLG_VIDEOSOURCE, 0, 0); } } private void button1_Click(object sender, EventArgs e) { try { SaveFileDialog SaveFileDialog1 = new SaveFileDialog(); SaveFileDialog1.Filter = "bmp files (*.bmp)|*.bmp|jpg files (* .jpg)|*.jpg|All files (*.*)|*.* "; SaveFileDialog1.FilterIndex = 2; //默认图片保存格 式 JPG SaveFileDialog1.RestoreDirectory = true; SaveFileDialog1.FileName = "Pic01 "; //默认图片保存名称 Pic01 if (SaveFileDialog1.ShowDialog() == DialogResult.OK) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.T op, panel1.Width, panel1.Height); pk.GrabImage(SaveFileDialog1.FileName); } } catch { } } private void button2_Click(object sender, EventArgs e) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.Top, panel1.Wid th, panel1.Height); pk.Start(); } private void button3_Click(object sender, EventArgs e) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.Top, panel1.Wid th, panel1.Height); pk.Stop(); } private void button4_Click(object sender, EventArgs e) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.Top, panel1.Wid th, panel1.Height); pk.GrabImage( "c:\001.bmp "); } private void button5_Click(object sender, EventArgs e) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.Top, panel1.Width, pa nel1.Height); pk.Kinescope( "c:\\001.avi "); } private void button6_Click(object sender, EventArgs e) { Form1.Pick pk = new Pick(Handle, panel1.Left, panel1.Top, panel1.Wid th, panel1.Height); pk.StopKinescope(); } 获取摄像头的代码 using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Runtime.InteropServices; using System.Drawing.Imaging; namespace CapTureMovie { ///

/// Form1 的摘要说明。 ///

public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.Button BtnCapTure; private System.Windows.Forms.Panel panel_Vedio; private int hHwnd; private System.Windows.Forms.Button BtnStop; private System.Windows.Forms.Label LbSysMsg; private System.Windows.Forms.Button button1; public struct videohdr_tag { public byte[] lpData; public int dwBufferLength; public int dwBytesUsed; public int dwTimeCaptured; public int dwUser; public int dwFlags; public int[] dwReserved; } public delegate bool CallBack(int hwnd, int lParam); ///

/// 必需的

设计

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器变量。 ///

private System.ComponentModel.Container components = null; [DllImport( "avicap32.dll ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern int capCreateCaptureWindowA([MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID); [DllImport( "avicap32.dll ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern bool capGetDriverDescriptionA(short wDriver, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszName, int cbName, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszVer, int cbVer); [DllImport( "user32 ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern bool DestroyWindow(int hndw); [DllImport( "user32 ", EntryPoint= "SendMessageA ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern int SendMessage(int hwnd, int wMsg, int wParam, [MarshalAs(UnmanagedType.AsAny)] object lParam); [DllImport( "user32 ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern int SetWindowPos(int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags); [DllImport( "vfw32.dll ")] public static extern string capVideoStreamCallback(int hwnd,videohdr_tag videohdr_tag); [DllImport( "vicap32.dll ", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)] public static extern bool capSetCallbackOnFrame(int hwnd,string s); public Form1() { // // Windows 窗体设计器支持所必需的 // InitializeComponent(); // // TODO: 在 InitializeComponent 调用后添加任何构造函数代码 // } ///

/// 清理所有正在使用的资源。 ///

protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows 窗体设计器生成的代码 ///

/// 设计器支持所需的

方法

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- 不要使用代码编辑器修改 /// 此方法的内容。 ///

private void InitializeComponent() { System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1)); this.panel_Vedio = new System.Windows.Forms.Panel(); this.BtnCapTure = new System.Windows.Forms.Button(); this.BtnStop = new System.Windows.Forms.Button(); this.LbSysMsg = new System.Windows.Forms.Label(); this.button1 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // panel_Vedio // this.panel_Vedio.BackgroundImage = ((System.Drawing.Image)(resources.GetObject( "panel_Vedio.BackgroundI mage "))); this.panel_Vedio.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.panel_Vedio.Location = new System.Drawing.Point(8, 16); this.panel_Vedio.Name = "panel_Vedio "; this.panel_Vedio.Size = new System.Drawing.Size(288, 224); this.panel_Vedio.TabIndex = 0; // // BtnCapTure // this.BtnCapTure.Location = new System.Drawing.Point(24, 256); this.BtnCapTure.Name = "BtnCapTure "; this.BtnCapTure.TabIndex = 1; this.BtnCapTure.Text = "图象采集 "; this.BtnCapTure.Click += new System.EventHandler(this.BtnCapTure_Click); // // BtnStop // this.BtnStop.Enabled = false; this.BtnStop.Location = new System.Drawing.Point(136, 256); this.BtnStop.Name = "BtnStop "; this.BtnStop.TabIndex = 1; this.BtnStop.Text = "停止采集 "; this.BtnStop.Click += new System.EventHandler(this.BtnStop_Click); // // LbSysMsg // this.LbSysMsg.Location = new System.Drawing.Point(16, 296); this.LbSysMsg.Name = "LbSysMsg "; this.LbSysMsg.Size = new System.Drawing.Size(240, 23); this.LbSysMsg.TabIndex = 2; // // button1 // this.button1.Location = new System.Drawing.Point(304, 48); this.button1.Name = "button1 "; this.button1.TabIndex = 3; this.button1.Text = "button1 "; this.button1.Click += new System.EventHandler(this.button1_Click); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(400, 357); this.Controls.Add(this.button1); this.Controls.Add(this.LbSysMsg); this.Controls.Add(this.BtnCapTure); this.Controls.Add(this.panel_Vedio); this.Controls.Add(this.BtnStop); this.Name = "Form1 "; this.Text = "Form1 "; this.ResumeLayout(false); } #endregion ///

/// 应用程序的主入口点。 ///

[STAThread] static void Main() { Application.Run(new Form1()); } private void BtnCapTure_Click(object sender, System.EventArgs e) { this.OpenCapture(); } private void OpenCapture() { int intWidth=this.panel_Vedio.Width; int intHeight=this.panel_Vedio.Height; int intDevice=0; string refDevice=intDevice.ToString(); hHwnd=Form1.capCreateCaptureWindowA(ref refDevice,1342177280,0,0,640,480,this.panel_Vedio.Handle.ToInt32() ,0); this.LbSysMsg.Text= " "; this.LbSysMsg.Text+= "驱动: "+refDevice; if(Form1.SendMessage(hHwnd,0x40a,intDevice,0)> 0) { Form1.SendMessage(this.hHwnd,0x435,-1, 0); Form1.SendMessage(this.hHwnd,0x434,0x42, 0); Form1.SendMessage(this.hHwnd,0x432,-1, 0); Form1.SetWindowPos(this.hHwnd,1,0,0,intWidth,intHeight,6); this.BtnCapTure.Enabled=false; this.BtnStop.Enabled=true; } else { Form1.DestroyWindow(this.hHwnd); this.BtnCapTure.Enabled=false; this.BtnStop.Enabled=true; } } private void BtnStop_Click(object sender, System.EventArgs e) { Form1.SendMessage(this.hHwnd, 0x40b, 0, 0); Form1.DestroyWindow(this.hHwnd); this.BtnCapTure.Enabled=true; this.BtnStop.Enabled=false; } private void button1_Click(object sender, System.EventArgs e) { try { Form1.SendMessage(this.hHwnd,0x41e,0,0); IDataObject obj1 = Clipboard.GetDataObject(); if (obj1.GetDataPresent(typeof(Bitmap))) { Image image1 = (Image) obj1.GetData(typeof(Bitmap)); // this.panel_Vedio.Image = image1; // this.ClosePreviewWindow(); SaveFileDialog SaveFileDialog1=new SaveFileDialog(); if (SaveFileDialog1.ShowDialog() == DialogResult.OK) { image1.Save(SaveFileDialog1.FileName, ImageFormat.Bmp); } } } catch { } } } }