[置顶] c# 2.0实现摄象头视频采集，拍照，录象

Camera.cs类文件 using System; using System.IO; using System.Drawing.Imaging; using System.Runtime.InteropServices; using System.Drawing; using System.Collections; using System.Data; namespace SoundVideo { public class Camera { public delegate void RecievedFrameEventHandler(byte[] data); public event RecievedFrameEventHandler RecievedFrame; public IntPtr lwndC; private IntPtr mControlPtr; private int mWidth; private int mHeight; private showVideo.FrameEventHandler mFrameEventHandler; public Camera(IntPtr handle, int width, int height) { mControlPtr = handle; mWidth = width; mHeight = height; } public void CloseCamera() { this.capDriverDisconnect(this.lwndC); } public void StartCamera() { try { byte[] lpszName = new byte[100]; byte[] lpszVer = new byte[100]; showVideo.capGetDriverDescriptionA(0, lpszName, 100, lpszVer, 100); this.lwndC = showVideo.capCreateCaptureWindowA(lpszName, showVideo.WS_VISIBLE + showVideo.WS_CHILD, 0, 0, mWidth, mHeight, mControlPtr, 0); if (this.capDriverConnect(this.lwndC, 0)) { this.capPreviewRate(this.lwndC, 66); this.capPreview(this.lwndC, true); showVideo.BITMAPINFO bitmapinfo = new showVideo.BITMAPINFO(); bitmapinfo.bmiHeader.biSize = showVideo.SizeOf(bitmapinfo.bmiHeader); bitmapinfo.bmiHeader.biWidth = 352; bitmapinfo.bmiHeader.biHeight = 288; bitmapinfo.bmiHeader.biPlanes = 1; bitmapinfo.bmiHeader.biBitCount = 24; this.capSetVideoFormat(this.lwndC, ref bitmapinfo, showVideo.SizeOf(bitmapinfo)); this.mFrameEventHandler = new showVideo.FrameEventHandler(FrameCallBack); this.capSetCallbackOnFrame(this.lwndC, this.mFrameEventHandler); showVideo.SetWindowPos(this.lwndC, 0, 0, 0, mWidth, mHeight, 6); } } catch { throw; } } public void bitMapToJPG(string bmpFileName, string jpgFileName) { System.Drawing.Image img; img = ReturnPhoto(bmpFileName); img.Save(jpgFileName, ImageFormat.Jpeg); } private Image ReturnPhoto(string bmpFileName) { try { System.IO.FileStream stream; stream = File.OpenRead(bmpFileName); Bitmap bmp = new Bitmap(stream); System.Drawing.Image image = bmp;//得到原图 //创建指定大小的图 System.Drawing.Image newImage = image.GetThumbnailImage(bmp.Width, bmp.Height, null, new IntPtr()); Graphics g = Graphics.FromImage(newImage); g.DrawImage(newImage, 0, 0, newImage.Width, newImage.Height); //将原图画到指定的图上 g.Dispose(); stream.Close(); return newImage; } catch { throw; } } public void capImage(IntPtr lwnd, string path)//抓图 { showVideo.BITMAPINFO bitmapinfo = new showVideo.BITMAPINFO(); IntPtr hBmp = Marshal.StringToHGlobalAnsi(path); showVideo.SendMessage(lwnd, showVideo.WM_CAP_SAVEDIB, 0, hBmp.ToInt32()); } public void capScope(IntPtr lwnd, string path)// 录像,保存avi文件的路径 { IntPtr hBmp = Marshal.StringToHGlobalAnsi(path); showVideo.SendMessage(lwnd, showVideo.WM_CAP_FILE_SET_CAPTURE_FILEA, 0, hBmp.ToInt32()); showVideo.SendMessage(lwnd, showVideo.WM_CAP_SEQUENCE, 0, 0); } public void stopCapScope(IntPtr lwnd)// 停止录像 { showVideo.SendMessage(lwnd, showVideo.WM_CAP_STOP, 0, 0); } private bool capDriverConnect(IntPtr lwnd, short i) { return showVideo.SendMessage(lwnd, showVideo.WM_CAP_DRIVER_CONNECT, i, 0); } private bool capDriverDisconnect(IntPtr lwnd) { return showVideo.SendMessage(lwnd, showVideo.WM_CAP_DRIVER_DISCONNECT, 0, 0); } private bool capPreview(IntPtr lwnd, bool f) { return showVideo.SendMessage(lwnd, showVideo.WM_CAP_SET_PREVIEW, f, 0); } private bool capPreviewRate(IntPtr lwnd, short wMS) { return showVideo.SendMessage(lwnd, showVideo.WM_CAP_SET_PREVIEWRATE, wMS, 0); } private bool capSetCallbackOnFrame(IntPtr lwnd, showVideo.FrameEventHandler lpProc) { return showVideo.SendMessage(lwnd, showVideo.WM_CAP_SET_CALLBACK_FRAME, 0, lpProc); } private bool capSetVideoFormat(IntPtr hCapWnd, ref showVideo.BITMAPINFO BmpFormat, int CapFormatSize) { return showVideo.SendMessage(hCapWnd, showVideo.WM_CAP_SET_VIDEOFORMAT, CapFormatSize, ref BmpFormat); } private void FrameCallBack(IntPtr lwnd, IntPtr lpVHdr) { try { showVideo.VIDEOHDR videoHeader = new showVideo.VIDEOHDR(); byte[] VideoData; videoHeader = (showVideo.VIDEOHDR)showVideo.GetStructure(lpVHdr, videoHeader); VideoData = new byte[videoHeader.dwBytesUsed]; showVideo.Copy(videoHeader.lpData, VideoData); if (this.RecievedFrame != null) this.RecievedFrame(VideoData); } catch { throw; } } } } ShowVideo.cs类文件 using System; using System.IO; using System.Drawing.Imaging; using System.Runtime.InteropServices; using System.Drawing; using System.Collections; using System.Data; namespace SoundVideo { public class showVideo { [DllImport("avicap32.dll")] public static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID); [DllImport("avicap32.dll")] public static extern bool capGetDriverDescriptionA(short wDriver, byte[] lpszName, int cbName, byte[] lpszVer, int cbVer); [DllImport("User32.dll")] public static extern bool SendMessage(IntPtr hWnd, int wMsg, bool wParam, int lParam); [DllImport("User32.dll")] public static extern bool SendMessage(IntPtr hWnd, int wMsg, short wParam, int lParam); [DllImport("User32.dll")] public static extern bool SendMessage(IntPtr hWnd, int wMsg, short wParam, FrameEventHandler lParam); [DllImport("User32.dll")] public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref BITMAPINFO lParam); [DllImport("User32.dll")] public static extern int SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags); [DllImport("avicap32.dll")] public static extern int capGetVideoFormat(IntPtr hWnd, IntPtr psVideoFormat, int wSize); public const int WM_USER = 0x400; public const int WS_CHILD = 0x40000000; public const int WS_VISIBLE = 0x10000000; public const int WM_CAP_START = WM_USER; public const int WM_CAP_STOP = WM_CAP_START + 68; public const int WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10; public const int WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11; public const int WM_CAP_SAVEDIB = WM_CAP_START + 25; public const int WM_CAP_GRAB_FRAME = WM_CAP_START + 60; public const int WM_CAP_SEQUENCE = WM_CAP_START + 62; public const int WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20; public const int WM_CAP_SEQUENCE_NOFILE = WM_CAP_START + 63; public const int WM_CAP_SET_OVERLAY = WM_CAP_START + 51; public const int WM_CAP_SET_PREVIEW = WM_CAP_START + 50; public const int WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START + 6; public const int WM_CAP_SET_CALLBACK_ERROR = WM_CAP_START + 2; public const int WM_CAP_SET_CALLBACK_STATUSA = WM_CAP_START + 3; public const int WM_CAP_SET_CALLBACK_FRAME = WM_CAP_START + 5; public const int WM_CAP_SET_SCALE = WM_CAP_START + 53; public const int WM_CAP_SET_PREVIEWRATE = WM_CAP_START + 52; public const int WM_CAP_SET_VIDEOFORMAT = WM_USER + 45; [StructLayout(LayoutKind.Sequential)] public struct VIDEOHDR { [MarshalAs(UnmanagedType.I4)] public int lpData; [MarshalAs(UnmanagedType.I4)] public int dwBufferLength; [MarshalAs(UnmanagedType.I4)] public int dwBytesUsed; [MarshalAs(UnmanagedType.I4)] public int dwTimeCaptured; [MarshalAs(UnmanagedType.I4)] public int dwUser; [MarshalAs(UnmanagedType.I4)] public int dwFlags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public int[] dwReserved; } [StructLayout(LayoutKind.Sequential)] public struct BITMAPINFOHEADER { [MarshalAs(UnmanagedType.I4)] public Int32 biSize; [MarshalAs(UnmanagedType.I4)] public Int32 biWidth; [MarshalAs(UnmanagedType.I4)] public Int32 biHeight; [MarshalAs(UnmanagedType.I2)] public short biPlanes; [MarshalAs(UnmanagedType.I2)] public short biBitCount; [MarshalAs(UnmanagedType.I4)] public Int32 biCompression; [MarshalAs(UnmanagedType.I4)] public Int32 biSizeImage; [MarshalAs(UnmanagedType.I4)] public Int32 biXPelsPerMeter; [MarshalAs(UnmanagedType.I4)] public Int32 biYPelsPerMeter; [MarshalAs(UnmanagedType.I4)] public Int32 biClrUsed; [MarshalAs(UnmanagedType.I4)] public Int32 biClrImportant; } [StructLayout(LayoutKind.Sequential)] public struct BITMAPINFO { [MarshalAs(UnmanagedType.Struct, SizeConst = 40)] public BITMAPINFOHEADER bmiHeader; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1024)] public Int32[] bmiColors; } public delegate void FrameEventHandler(IntPtr lwnd, IntPtr lpVHdr); public static object GetStructure(IntPtr ptr, ValueType structure) { return Marshal.PtrToStructure(ptr, structure.GetType()); } public static object GetStructure(int ptr, ValueType structure) { return GetStructure(new IntPtr(ptr), structure); } public static void Copy(IntPtr ptr, byte[] data) { Marshal.Copy(ptr, data, 0, data.Length); } public static void Copy(int ptr, byte[] data) { Copy(new IntPtr(ptr), data); } public static int SizeOf(object structure) { return Marshal.SizeOf(structure); } } } Form1.cs类文件 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace SoundVideo { public partial class Form1 : Form { Camera wc; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { try { this.btnPlay.Enabled = false; this.btnClose.Enabled = true; //panelPreview.Size = new Size(330,330); wc = new Camera(panelPreview.Handle, panelPreview.Width, panelPreview.Height); wc.StartCamera(); } catch { MessageBox.Show("打开摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnPlay_Click(object sender, EventArgs e) { try { this.btnPlay.Enabled = false; this.btnClose.Enabled = true; wc = new Camera(panelPreview.Handle, panelPreview.Width, panelPreview.Height); wc.StartCamera(); } catch { MessageBox.Show("打开摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnScroll_Click(object sender, EventArgs e) { try { wc.capImage(wc.lwndC, "d://test.bmp"); } catch { MessageBox.Show("抓图有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnStopCap_Click(object sender, EventArgs e) { try { wc.stopCapScope(wc.lwndC); } catch { MessageBox.Show("停止摄像有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnStartCap_Click(object sender, EventArgs e) { try { wc.capScope(wc.lwndC, "d://test.avi"); } catch { MessageBox.Show("开始摄像有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnClose_Click(object sender, EventArgs e) { try { this.btnPlay.Enabled = true; this.btnClose.Enabled = false; wc.CloseCamera(); } catch { MessageBox.Show("关闭摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } } } using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace SoundVideo { public partial class Form1 : Form { Camera wc; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { try { this.btnPlay.Enabled = false; this.btnClose.Enabled = true; //panelPreview.Size = new Size(330,330); wc = new Camera(panelPreview.Handle, panelPreview.Width, panelPreview.Height); wc.StartCamera(); } catch { MessageBox.Show("打开摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnPlay_Click(object sender, EventArgs e) { try { this.btnPlay.Enabled = false; this.btnClose.Enabled = true; wc = new Camera(panelPreview.Handle, panelPreview.Width, panelPreview.Height); wc.StartCamera(); } catch { MessageBox.Show("打开摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnScroll_Click(object sender, EventArgs e) { try { wc.capImage(wc.lwndC, "d://test.bmp"); } catch { MessageBox.Show("抓图有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnStopCap_Click(object sender, EventArgs e) { try { wc.stopCapScope(wc.lwndC); } catch { MessageBox.Show("停止摄像有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnStartCap_Click(object sender, EventArgs e) { try { wc.capScope(wc.lwndC, "d://test.avi"); } catch { MessageBox.Show("开始摄像有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } private void btnClose_Click(object sender, EventArgs e) { try { this.btnPlay.Enabled = true; this.btnClose.Enabled = false; wc.CloseCamera(); } catch { MessageBox.Show("关闭摄像头有误,请检查", "系统消息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } } } Form1.Designer.cs类文件 namespace SoundVideo { partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.panel1 = new System.Windows.Forms.Panel(); this.btnStartCap = new System.Windows.Forms.Button(); this.btnStopCap = new System.Windows.Forms.Button(); this.btnScroll = new System.Windows.Forms.Button(); this.btnPlay = new System.Windows.Forms.Button(); this.btnClose = new System.Windows.Forms.Button(); this.panelPreview = new System.Windows.Forms.Panel(); this.panel2 = new System.Windows.Forms.Panel(); this.panel1.SuspendLayout(); this.panel2.SuspendLayout(); this.SuspendLayout(); // // panel1 // this.panel1.Controls.Add(this.panel2); this.panel1.Controls.Add(this.panelPreview); this.panel1.Dock = System.Windows.Forms.DockStyle.Fill; this.panel1.Location = new System.Drawing.Point(0, 0); this.panel1.Name = "panel1"; this.panel1.Size = new System.Drawing.Size(518, 487); this.panel1.TabIndex = 0; // // btnStartCap // this.btnStartCap.Location = new System.Drawing.Point(51, 3); this.btnStartCap.Name = "btnStartCap"; this.btnStartCap.Size = new System.Drawing.Size(75, 23); this.btnStartCap.TabIndex = 0; this.btnStartCap.Text = "开始录像"; this.btnStartCap.UseVisualStyleBackColor = true; this.btnStartCap.Click += new System.EventHandler(this.btnStartCap_Click); // // btnStopCap // this.btnStopCap.Location = new System.Drawing.Point(132, 3); this.btnStopCap.Name = "btnStopCap"; this.btnStopCap.Size = new System.Drawing.Size(75, 23); this.btnStopCap.TabIndex = 1; this.btnStopCap.Text = "停止录像"; this.btnStopCap.UseVisualStyleBackColor = true; this.btnStopCap.Click += new System.EventHandler(this.btnStopCap_Click); // // btnScroll // this.btnScroll.Location = new System.Drawing.Point(213, 3); this.btnScroll.Name = "btnScroll"; this.btnScroll.Size = new System.Drawing.Size(75, 23); this.btnScroll.TabIndex = 2; this.btnScroll.Text = "抓图"; this.btnScroll.UseVisualStyleBackColor = true; this.btnScroll.Click += new System.EventHandler(this.btnScroll_Click); // // btnPlay // this.btnPlay.Location = new System.Drawing.Point(294, 3); this.btnPlay.Name = "btnPlay"; this.btnPlay.Size = new System.Drawing.Size(75, 23); this.btnPlay.TabIndex = 3; this.btnPlay.Text = "播放"; this.btnPlay.UseVisualStyleBackColor = true; this.btnPlay.Click += new System.EventHandler(this.btnPlay_Click); // // btnClose // this.btnClose.Location = new System.Drawing.Point(375, 3); this.btnClose.Name = "btnClose"; this.btnClose.Size = new System.Drawing.Size(75, 23); this.btnClose.TabIndex = 4; this.btnClose.Text = "关闭"; this.btnClose.UseVisualStyleBackColor = true; this.btnClose.Click += new System.EventHandler(this.btnClose_Click); // // panelPreview // this.panelPreview.Dock = System.Windows.Forms.DockStyle.Fill; this.panelPreview.Location = new System.Drawing.Point(0, 0); this.panelPreview.Name = "panelPreview"; this.panelPreview.Size = new System.Drawing.Size(518, 487); this.panelPreview.TabIndex = 5; // // panel2 // this.panel2.Controls.Add(this.btnStartCap); this.panel2.Controls.Add(this.btnStopCap); this.panel2.Controls.Add(this.btnClose); this.panel2.Controls.Add(this.btnScroll); this.panel2.Controls.Add(this.btnPlay); this.panel2.Dock = System.Windows.Forms.DockStyle.Bottom; this.panel2.Location = new System.Drawing.Point(0, 448); this.panel2.Name = "panel2"; this.panel2.Size = new System.Drawing.Size(518, 39); this.panel2.TabIndex = 6; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(518, 487); this.Controls.Add(this.panel1); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.panel1.ResumeLayout(false); this.panel2.ResumeLayout(false); this.ResumeLayout(false); } #endregion private System.Windows.Forms.Panel panel1; private System.Windows.Forms.Button btnClose; private System.Windows.Forms.Button btnPlay; private System.Windows.Forms.Button btnScroll; private System.Windows.Forms.Button btnStopCap; private System.Windows.Forms.Button btnStartCap; private System.Windows.Forms.Panel panelPreview; private System.Windows.Forms.Panel panel2; } }