分享一个C#调用摄像头的类
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
namespace Camera
{
/// <summary>
/// 一个控制摄像头的类
/// </summary>
public class PCCamera
{
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;
private IntPtr hWndC;
private bool bWorkStart = false;
private IntPtr mControlPtr;
private int mWidth;
private int mHeight;
private int mLeft;
private int mTop;
/// <summary>
/// 初始化显示图像
/// </summary>
/// <param name="handle">控件的句柄 </param>
/// <param name="left">开始显示的左边距 </param>
/// <param name="top">开始显示的上边距 </param>
/// <param name="width">要显示的宽度 </param>
/// <param name="height">要显示的长度 </param>
public PCCamera(IntPtr handle, int left, int top, int width, int height) //PCCamera
{= 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, IntPtr wParam, IntPtr lParam);
/// <summary>
/// 开始显示图像
/// </summary>
public void Start()
{
if (bWorkStart)
return;
bWorkStart = 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, IntPtr.Zero, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_ERROR, IntPtr.Zero, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_STATUSA, IntPtr.Zero, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, IntPtr.Zero, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_SCALE, (IntPtr) 1, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_PREVIEWRATE, (IntPtr)66, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_OVERLAY, (IntPtr)1, IntPtr.Zero);
SendMessage(hWndC, WM_CAP_SET_PREVIEW, (IntPtr)1, IntPtr.Zero);
}
return;
}
/// <summary>
/// 停止显示图像
/// </summary>
public void Stop()
{
SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, IntPtr.Zero, IntPtr.Zero);
bWorkStart = false;
}
/// <summary>
/// 抓图
/// </summary>
/// <param name="path">要保存bmp文件的路径 </param>
public void GrabImage(string path)
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
SendMessage(hWndC, WM_CAP_SAVEDIB, IntPtr.Zero , hBmp);
}
///<summary>
///录像
///</summary>
///<param name="path">要保存avi文件的路径</param>
public void Kinescope(string path)
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
SendMessage(hWndC, WM_CAP_FILE_SET_CAPTURE_FILEA, IntPtr.Zero,hBmp );
SendMessage(hWndC, WM_CAP_SEQUENCE, IntPtr.Zero,IntPtr.Zero );
}
///<summary>
///停止录像
///</summary>
public void StopKinescope()
{
SendMessage(hWndC, WM_CAP_STOP, IntPtr.Zero, IntPtr.Zero);
}
}
}
mControlPtr
==========================================================================
操作摄像头的代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Temp
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
pcc = new Camera.PCCamera(this.panelCamera.Handle, 0, 0, 320, 240); //panelCamera is Control panel
}
private Camera.PCCamera pcc;
//开始
private void btnStart_Click(object sender, EventArgs e)
{
pcc.Start();
}
//停止
private void btnStop_Click(object sender, EventArgs e)
{
pcc.Stop();
}
//截图
private void btnSaveImage_Click(object sender, EventArgs e)
{
pcc.GrabImage("c:\\" + System.DateTime.Now.ToString("yyyyMMddHHmmss") + ".jpg");
}
//录像
private void btnKinescope_Click(object sender, EventArgs e)
{
pcc.Kinescope("c:\\" + System.DateTime.Now.ToString("yyyyMMddHHmmss") + ".avi");
}
//停止录像
private void btnStopKinescope_Click(object sender, EventArgs e)
{
Application.DoEvents();
pcc.StopKinescope();
}
}
}
分享一个C#调用摄像头的类相关推荐
- .Net里一个用于驱动摄像头的类
using System;using System.Runtime.InteropServices;using System.Drawing;using System.Drawing.Imaging; ...
- 分享一个MD5加密的工具类
2019独角兽企业重金招聘Python工程师标准>>> package Utile;import java.math.BigInteger; import java.security ...
- 分享一个漂亮的php验证码类
直接上代码: //验证码类 class ValidateCode {private $charset = 'abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ2345 ...
- 分享一个C#读取计算机信息的类
using System;using System.Runtime.InteropServices;using System.Management;namespace Hardware{/// sum ...
- 分享一个文件上传工具类
文件上传状态枚举类: View Code 1 package com.hoo.enums; 2 3 4 5 /** 6 7 * <b>function:</b> 文件上传状态 ...
- (vc)分享一个读写ini文件的类，支持多种数据类型的读写，二进制数据都能保存和读取...
读写ini文件的类叫CIni,有ini.h和ini.cpp两个文件组成. ini.h文件: #pragma once#define SER_GET(bGet,value) SerGet(bGe ...
- 分享一个Joda-Time日期时间工具类
写在前面 在JDK1.8之前,处理日期和时间的方式比较单一,Java中提供了Calendar来处理日期,但是过程较为繁琐. 但是在JDK1.8之后,Java更新了time包提供了LocalDate,L ...
- php调用restful接口_分享一个PHP调用RestFul接口的函数
/** * [http 调用接口函数] * @Date 2016-07-11 * @Author GeorgeHao * @param string $url [接口地址] * @param arra ...
- 分享一个RSA加解密工具类，公钥加密私钥解密、私钥加密公钥解密、私钥签名公钥验签、生成公钥私钥
测试: public static void main(String[] args) {try {//生成公钥私钥Map<String, Object> map = RSAUtil.ini ...
最新文章
- android数据库降级_Android SQLite (二.数据库创建，升级及降级)
- linux系统中的文件传输
- 【linux操作回炉1】
- Mahout分步式程序开发 聚类Kmeans
- 在Windows下搭建SVN服务器并且集成到 Eclipse 开发环境中
- 【收藏】Win10：路径长度超过260个字符
- 使用Xftp5连接云服务器
- Windows 2000缓冲区溢出技术原理
- 8.6 edu25 ，577#div2 CF补题（二分 ，dp 与 贪心
- 动态网页技术--JSP（7）
- in the java search_Java SearchRequest.indices方法代碼示例
- 在java中什么是所有类的父类_java中object是所有类的父类吗
- openssl CRL证书
- Johnson算法寻找图中的所有简单环路
- Linux 下c获取当前时间（精确到秒和毫秒或者微秒）
- 如何重装win10应用商店？
- 计算机应用技术需要学数学吗,学计算机应用技术能不学数学吗?
- 制作桌面进制转换（二进制，八进制，十进制，十六进制）小工具 Python学习日记 2.28~3.6
- 鸿蒙智慧屏和pro有什么区别,华为智慧屏V55i和荣耀智慧屏PRO区别对比
- wps-excel的自动分页符（虚线）怎么去掉