private void btnOpenCamere_Click(object sender, RoutedEventArgs e)
{
DoAction(() =>
{
IEnumerable <InDeviceInfo> videoDeviceInfos;
IEnumerable <InDeviceInfo> audioDeviceInfos;
ApiProvider.Default.GetFreeDeviceInfos(out videoDeviceInfos, out audioDeviceInfos);
if (videoDeviceInfos.Count() > 0)
{
var param = new VideoInParam();
param.Type = VideoInType.Camera;
param.CaptureFps = 20;
param.Camera = new CameraParam();
param.Camera.DevicePath = videoDeviceInfos.First().Path;
param.Camera.QualityLevel = VideoQualityLevel.Middle;
if (_cameraOpened = _camera.Open(param))
{
var text = $"fps:{param.CaptureFps}{Environment.NewLine}";
text += $"devicePath:{param.Camera.DevicePath}{Environment.NewLine}";
text += $"qualityLevel:{param.Camera.QualityLevel}{Environment.NewLine}";
MessageBox.Show(text, "Open Success");
// 测试只能设置为Left=0,Top=0 ???
var rect = new RectScreenParam
{
Left = 0,
Top = 0,
Right = 200,
Bottom = 150
};
_camera.SetDisplayRect(rect);
_camera.AdjustLayer(false);
if (_cameraStarted = _camera.StartCapture())
{
_camera.SwitchSoloPreview(true);
}
}
}
});
}
/// <summary>
/// 设置该子视频窗口在主窗口中的显示位置和大小
/// </summary>
/// <param name="param">显示位置参数</param>
public void SetDisplayRect(RectScreenParam param)
{
ThrowIfChildServiceException();
ChildVideoApi.SetDisplayRect(ChildService, ref param);
}
internal static extern void SetDisplayRect(IntPtr childService, ref RectScreenParam param);
