1.用c#调用摄像头做录像功能
用c#调用摄像头做录像功能
前段时间刚做了个监控系统，有不明白+qq
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System;
namespace CamTest2
{
/// <summary>
/// 一个控制摄像头的离子炮源码段类
/// </summary>
public class Pick
{
private const int WM_USER = 0x;
private const int WS_CHILD = 0x;
private const int WS_VISIBLE = 0x;
private const int WM_CAP_START = WM_USER;
private const int WM_CAP_STOP = WM_CAP_START + ;
private const int WM_CAP_DRIVER_CONNECT = WM_CAP_START + ;
private const int WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + ;
private const int WM_CAP_SAVEDIB = WM_CAP_START + ;
private const int WM_CAP_GRAB_FRAME = WM_CAP_START + ;
private const int WM_CAP_SEQUENCE = WM_CAP_START + ;
private const int WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + ;
private const int WM_CAP_SEQUENCE_NOFILE = WM_CAP_START + ;
private const int WM_CAP_SET_OVERLAY = WM_CAP_START + ;
private const int WM_CAP_SET_PREVIEW = WM_CAP_START + ;
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 + ;
private const int WM_CAP_SET_PREVIEWRATE = WM_CAP_START + ;
private const int WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + ;
private const int WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + ;
private const int WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + ;
private const int WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + ;
private IntPtr hWndC;
private bool bStat = false;
private IntPtr mControlPtr;
private int mWidth;
private int mHeight;
private int mLeft;
private int mTop;
/// <summary>
/// 初始化摄像头
/// </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 Pick(IntPtr handle, int left, int top, int width, int height)
{
mControlPtr = handle;
mWidth = width;
mHeight = height;
mLeft = left;
mTop = top;
}
[DllImport("avicap.dll")]
private static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID);
[DllImport("avicap.dll")]
private static extern int capGetVideoFormat(IntPtr hWnd, IntPtr psVideoFormat, int wSize);
[DllImport("User.dll")]
private static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, long lParam);
public void capDlgVideoFormat()
{
Boolean capDlgVideoFormat = SendMessage(hWndC, WM_CAP_DLG_VIDEOFORMAT, 0, 0);
}
public void capDlgVideoSource()
{
Boolean capDlgVideoSource = SendMessage(hWndC, WM_CAP_DLG_VIDEOSOURCE, 0, 0);
}
public void capDlgVideoDisplay()
{
Boolean capDlgVideoDisplay = SendMessage(hWndC, WM_CAP_DLG_VIDEODISPLAY, 0, 0);
}
public void capDlgVideoCompression()
{
Boolean capDlgVideoCompression = SendMessage(hWndC, WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0);
}
/// <summary>
/// 开始显示图像
/// </summary>
public void Start()
{
if (bStat)
return;
bStat = true;
byte[] lpszName = new byte[];
hWndC = capCreateCaptureWindowA(lpszName, WS_CHILD | WS_VISIBLE, mLeft, mTop, mWidth, mHeight, mControlPtr, 0);
if (hWndC.ToInt() != 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, , 0);
SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0);
}
return;
}
/// <summary>
/// 停止显示
/// </summary>
public void Stop()
{
SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, 0, 0);
bStat = 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, 0, hBmp.ToInt());
}
/// <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, 0, hBmp.ToInt());
SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0);
}
/// <summary>
/// 停止录像
/// </summary>
public void StopKinescope()
{
SendMessage(hWndC, WM_CAP_STOP, 0, 0);
}
/* public void cap()
{
CAPTUREPARMS s;
capCaptureGetSetup(m_caphwnd,&s,sizeof(CAPTUREPARMS));//取得采集参数
s.dwRequestMicroSecPerFrame = ;//采集一帧花费1/秒
s.fAbortLeftMouse = FALSE;//压下鼠标左键不终止采集
s.fAbortRightMouse = FALSE;//压下鼠标右键不终止采集
s.fCaptureAudio = TRUE;//c采集音频
s.fYield = TRUE;//使用一个独立的线程来采集视频，不使用View窗口线程
capCaptureSetSetup(m_caphwnd,溯源码燕盏&s,sizeof(CAPTUREPARMS));//设定采集参数
}*/
}
}
