/// <summary>
/// 从视频数据放回一个Bmp
/// </summary>
/// <param name="data"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <returns></returns>
//public static Bitmap GetBitmapFromCallBackData(byte[] data, int width, int height)
//{
// Bitmap bit = new Bitmap(width, height, PixelFormat.Format24bppRgb);
// BitmapData bitdata = bit.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
// unsafe
// {
// byte* p = (byte*)(void*)bitdata.Scan0;
// for (int i = 0; i < bit.Height; i++)
// {
// for (int k = 0; k < bitdata.Stride; k++)
// {
// int index = (bit.Height - (i + 1)) * bitdata.Stride + k;
// p[0] = data[index];
// p++;
// }
// }
// }
// bit.UnlockBits(bitdata);
// return bit;
//}
// start the web camera
public void StartWebCam()
{
byte[] lpszName = new byte[100];
byte[] lpszVer = new byte[100];
ShowVideo.capGetDriverDescriptionA(0, lpszName, 100, lpszVer, 100);
this.lwndC = ShowVideo.capCreateCaptureWindowA(lpszName, ShowVideo.WS_CHILD | ShowVideo.WS_VISIBLE, 0, 0, mWidth, mHeight, this.mControlPtr, 0);
if (this.capDriverConnect(this.lwndC, 0))
{
//有这句，图像才会和mWidth, mHeight相适应
ShowVideo.SendMessage(this.lwndC, ShowVideo.WM_CAP_SET_SCALE, 1, 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 = 353;
//bitmapinfo.bmiHeader.biHeight = 288;
//bitmapinfo.bmiHeader.biPlanes = 1;
//bitmapinfo.bmiHeader.biBitCount = 24;
//设置格式不一定成功，看设备是否支持
//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);
//ShowVideo.SendMessage(this.lwndC, ShowVideo.WM_CAP_GET_VIDEOFORMAT, ShowVideo.SizeOf(bitmapinfo), ref bitmapinfo);
}
}
/// <summary>
/// 打开摄像头
/// </summary>
public void StartWebCam()
{
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);
}
}
private bool capSetCallbackOnFrame(IntPtr lwnd, ShowVideo.FrameEventHandler lpProc)
{
return(ShowVideo.SendMessage(lwnd, ShowVideo.WM_CAP_SET_CALLBACK_FRAME, 0, lpProc));
}
