using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AForge.Video;
using AForge.Video.DirectShow;
using System.Drawing;

namespace CamCap2
{


    class Program
    {
        static FilterInfoCollection WebcamColl;
        static VideoCaptureDevice Device;
        static string CaptureFileName;
        static void Capture(int cameraIndex = 0)
        {
            WebcamColl = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            Device = new VideoCaptureDevice(WebcamColl[cameraIndex].MonikerString);
            Device.Start();
            Device.NewFrame += new NewFrameEventHandler(Cam_SnapshotTaken);
        }

        static int Main(string[] args)
        {

            if (args == null)
            {
                Console.WriteLine("args is null");
            }
            else
            {
                Console.Write("args length is ");
                Console.WriteLine(args.Length);
                for (int i = 0; i < args.Length; i++)
                {
                    string argument = args[i];
                    if (argument.ToLower() == "-filename")
                    {
                        var watch = System.Diagnostics.Stopwatch.StartNew();
                        Console.WriteLine("Your file will be saved in: " + args[i + 1]);
                        CaptureFileName = args[i + 1];
                        Capture();
                        watch.Stop();
                        var elapsedMs = watch.ElapsedMilliseconds;
                        Console.WriteLine("Executed in " + elapsedMs + "ms");
                        return 0;
                    }
                }
            }
            //Console.ReadLine();
            return 0;
           
        }

        static void Cam_SnapshotTaken(object sender, NewFrameEventArgs eventArgs)
        {
            Image img = (Bitmap)eventArgs.Frame.Clone();
            img.Save(@CaptureFileName);
            Device.SignalToStop();
        }
    }
}