public Camera GetCameraParameters(string cameraName)
{
var cameraDeviceInfoPtr = IntPtr.Zero;
Camera camera = new Camera()
{
CameraParameters = new List <CameraParameter>()
};
try
{
var cameraInfoByte = Marshal.SizeOf(typeof(VideoDeviceInfo));
cameraDeviceInfoPtr = Marshal.AllocHGlobal(cameraInfoByte);
var result = MeetingAgent.GetCameraInfo(cameraName, cameraDeviceInfoPtr);
var pointer = new IntPtr(cameraDeviceInfoPtr.ToInt64());
var cameraInfo = (VideoDeviceInfo)Marshal.PtrToStructure(pointer, typeof(VideoDeviceInfo));
camera.Name = cameraInfo.Name;
for (int i = 0; i < cameraInfo.FormatCount; i++)
{
VideoFormat videoFormat = cameraInfo.Formats[i];
CameraParameter cameraParameter = new CameraParameter()
{
ColorSpace = videoFormat.ColorSpace.ToString(),
Fps = new List <int>(),
VideSizes = new List <Size>()
};
for (int j = 0; j < videoFormat.sizeCount; j++)
{
VideoSize videoSize = videoFormat.VideoSizes[j];
cameraParameter.VideSizes.Add(new Size()
{
Width = videoSize.Width,
Height = videoSize.Height
});
}
for (int k = 0; k < videoFormat.fpsCount; k++)
{
cameraParameter.Fps.Add(videoFormat.Fps[k]);
}
camera.CameraParameters.Add(cameraParameter);
}
}
catch (Exception ex)
{
Log.Error($"GetCameraParameters({cameraName}) exception：{ex}");
}
finally
{
if (cameraDeviceInfoPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(cameraDeviceInfoPtr);
}
}
return(camera);
}
