/// <summary>
/// 视频截图，默认BMP格式
/// </summary>
/// <param name="saveImageFilePath">图片格式存储全路径;eg:D:\20170913162510.jpeg</param>
/// <param name="imageType">图片格式</param>
/// <returns>操作结果</returns>
public OperatedResult Capture(string saveImageFilePath, CaptureImageType imageType = CaptureImageType.BMP)
{
if (!IsPreviewing)
{
return(OperatedResult.Fail("尚未处于视频预览状态，不能进行视频截图操作."));
}
string _captureImageFile = string.IsNullOrEmpty(saveImageFilePath) != true ? saveImageFilePath : string.Format(@"{0}\{1}.{2}", CaptureFolders, DateTime.Now.ToString("yyyyMMddHHmmss"), imageType.ToString().ToLower());
bool _result = false;
switch (imageType)
{
case CaptureImageType.BMP:
_result = CHCNetSDK.NET_DVR_CapturePicture(previewId, _captureImageFile);
break;
case CaptureImageType.JPEG:
CHCNetSDK.NET_DVR_JPEGPARA _jpegParamter = new CHCNetSDK.NET_DVR_JPEGPARA();
_jpegParamter.wPicQuality = 0; //图像质量 Image quality
_jpegParamter.wPicSize = 0xff; //抓图分辨率 Picture size: 2- 4CIF，0xff- Auto(使用当前码流分辨率)，抓图分辨率需要设备支持，更多取值请参考SDK文档
_result = CHCNetSDK.NET_DVR_CaptureJPEGPicture(UserId, CurPreviewChannelNo, ref _jpegParamter, _captureImageFile);
break;
}
return(_result == true?OperatedResult.Success(_captureImageFile) : OperatedResult.Fail(LastErrorMessage));
}
private void UpdateBtnStatus(CaptureImageType newStatus)
{
captureImageType = newStatus;
switch (captureImageType)
{
case CaptureImageType.None:
StopPreview();
txtDetail.Text = "";
txtScore.Text = "";
txtUsrename.Text = "";
LvFaceList.Clear();
LvFaceList.Enabled = true;
ImageBoxCapturedImage.Image = null;
BtnCancel.Enabled = false;
BtnStartPreview.Enabled = true;
BtnStartPreview.Text = "New Person";
BtnSaveFace.Enabled = false;
BtnCheckFace.Enabled = false;
BtnListPeople.Enabled = true;
BtnCaptureFace.Enabled = false;
if (tracker != null)
{
tracker.Dispose();
tracker.TrackingFaces.Clear();
}
if (people != null)
{
people.Clear();
}
selectedPerson = null;
//ListFaceFromServer();
UpdateDeleteBtn();
break;
case CaptureImageType.NewPerson:
LvFaceList.Clear();
LvFaceList.Enabled = false;
BtnCancel.Enabled = true;
BtnStartPreview.Enabled = false;
BtnSaveFace.Enabled = false;
BtnCheckFace.Enabled = false;
BtnListPeople.Enabled = false;
BtnCaptureFace.Enabled = true;
UpdateDeleteBtn();
break;
case CaptureImageType.CurrentPerson:
BtnCancel.Enabled = true;
BtnStartPreview.Enabled = true;
BtnStartPreview.Text = "Start Preview";
UpdateSaveBtn();
BtnCheckFace.Enabled = false;
BtnListPeople.Enabled = false;
BtnCaptureFace.Enabled = false;
UpdateDeleteBtn();
break;
case CaptureImageType.UpdatePerson:
LvFaceList.Clear();
LvFaceList.Enabled = false;
BtnCancel.Enabled = true;
BtnStartPreview.Enabled = false;
BtnSaveFace.Enabled = false;
BtnCheckFace.Enabled = false;
BtnListPeople.Enabled = false;
BtnCaptureFace.Enabled = true;
UpdateDeleteBtn();
break;
case CaptureImageType.NewPersonCaptured:
LvFaceList.Enabled = true;
LvFaceList.Items[0].Selected = true;
LvFaceList.Items[0].Checked = true;
BtnCancel.Enabled = true;
BtnStartPreview.Enabled = false;
UpdateSaveBtn();
UpdateCheckImageBtn();
BtnListPeople.Enabled = false;
BtnCaptureFace.Enabled = true;
UpdateDeleteBtn();
break;
case CaptureImageType.UpdatePersonCaptured:
LvFaceList.Enabled = true;
LvFaceList.Items[0].Selected = true;
LvFaceList.Items[0].Checked = true;
BtnCancel.Enabled = true;
BtnStartPreview.Enabled = false;
UpdateSaveBtn();
UpdateCheckImageBtn();
BtnListPeople.Enabled = false;
BtnCaptureFace.Enabled = true;
UpdateDeleteBtn();
break;
}
TxtErrorMessage.Text = captureImageType.ToString();
}
