private void btnBMP_Click(object sender, EventArgs e)
{
if (m_lRealHandle < 0)
{
DebugInfo("Please start live view firstly!"); //BMP抓图需要先打开预览
return;
}
string sBmpPicFileName;
//图片保存路径和文件名 the path and file name to save
sBmpPicFileName = "test.bmp";
if (comboBoxView.SelectedIndex == 0)
{
//BMP抓图 Capture a BMP picture
if (!CHCNetSDK.NET_DVR_CapturePicture(m_lRealHandle, sBmpPicFileName))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_CapturePicture failed, error code= " + iLastErr;
DebugInfo(str);
return;
}
else
{
str = "NET_DVR_CapturePicture succ and the saved file is " + sBmpPicFileName;
DebugInfo(str);
}
}
else
{
int iWidth = 0, iHeight = 0;
uint iActualSize = 0;
if (!PlayCtrl.PlayM4_GetPictureSize(m_lPort, ref iWidth, ref iHeight))
{
iLastErr = PlayCtrl.PlayM4_GetLastError(m_lPort);
str = "PlayM4_GetPictureSize failed, error code= " + iLastErr;
DebugInfo(str);
return;
}
uint nBufSize = (uint)(iWidth * iHeight) * 5;
byte[] pBitmap = new byte[nBufSize];
if (!PlayCtrl.PlayM4_GetBMP(m_lPort, pBitmap, nBufSize, ref iActualSize))
{
iLastErr = PlayCtrl.PlayM4_GetLastError(m_lPort);
str = "PlayM4_GetBMP failed, error code= " + iLastErr;
DebugInfo(str);
}
else
{
FileStream fs = new FileStream(sBmpPicFileName, FileMode.Create);
fs.Write(pBitmap, 0, (int)iActualSize);
fs.Close();
str = "PlayM4_GetBMP succ and the saved file is " + sBmpPicFileName;
DebugInfo(str);
}
}
return;
}