DSStream.dll录像

Question

我用C# form想做一个录像功能请大侠帮帮助

Answer 1

http://zhidao.baidu.com/question/99349345.html
研究一下

Answer 2

using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System;namespace CamTest2
{
    /// <summary>
    /// 一个控制摄像头的类
    /// </summary>
    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;
        private const int WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + 41;
        private const int WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + 42;
        private const int WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + 43;
        private const int WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + 46;        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("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, 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[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;        }        /// <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.ToInt64());
        }        /// <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.ToInt64());
                       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 = 33333;//采集一帧花费1/30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,&s,sizeof(CAPTUREPARMS));//设定采集参数
        }*/
    }
}