// Simple Player sample application
// AForge.NET framework
// http://www.aforgenet.com/framework/
//
// Copyright © AForge.NET, 2006-2011
// contacts@aforgenet.com
//

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;

using AForge.Video;
using AForge.Video.DirectShow;

namespace Player
{
    public partial class MainForm : Form
    {
        private Stopwatch stopWatch = null;




        // Class constructor
        public MainForm()
        {
            InitializeComponent();


        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            CloseCurrentVideoSource();
        }

        // "Exit" menu item clicked
        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        // Open local video capture device
        private void localVideoCaptureDeviceToolStripMenuItem_Click(object sender, EventArgs e)
        {
            VideoCaptureDeviceForm form = new VideoCaptureDeviceForm();

            if (form.ShowDialog(this) == DialogResult.OK)
            {
                // create video source
                VideoCaptureDevice videoSource = form.VideoDevice;



                // open it
                OpenVideoSource(videoSource);
            }
        }

        // Open video file using DirectShow
        private void openVideofileusingDirectShowToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                // create video source
                FileVideoSource fileSource = new FileVideoSource(openFileDialog.FileName);

                // open it
                OpenVideoSource(fileSource);
            }
        }

        // Open JPEG URL
        private void openJPEGURLToolStripMenuItem_Click(object sender, EventArgs e)
        {
            URLForm form = new URLForm();

            form.Description = "Enter URL of an updating JPEG from a web camera:";
            form.URLs = new string[]
                {
                    "http://195.243.185.195/axis-cgi/jpg/image.cgi?camera=1",
                };

            if (form.ShowDialog(this) == DialogResult.OK)
            {
                // create video source
                JPEGStream jpegSource = new JPEGStream(form.URL);

                // open it
                OpenVideoSource(jpegSource);
            }
        }

        // Open MJPEG URL
        private void openMJPEGURLToolStripMenuItem_Click(object sender, EventArgs e)
        {
            URLForm form = new URLForm();

            form.Description = "Enter URL of an MJPEG video stream:";
            form.URLs = new string[]
                {
                    "http://195.243.185.195/axis-cgi/mjpg/video.cgi?camera=4",
                    "http://195.243.185.195/axis-cgi/mjpg/video.cgi?camera=3",
                };

            if (form.ShowDialog(this) == DialogResult.OK)
            {
                // create video source
                MJPEGStream mjpegSource = new MJPEGStream(form.URL);

                // open it
                OpenVideoSource(mjpegSource);
            }
        }

        // Capture 1st display in the system
        private void capture1stDisplayToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenVideoSource(new ScreenCaptureStream(Screen.AllScreens[0].Bounds, 100));
        }

        // Open video source
        private void OpenVideoSource(IVideoSource source)
        {
            // set busy cursor
            this.Cursor = Cursors.WaitCursor;

            // stop current video source
            CloseCurrentVideoSource();

            // start new video source
            videoSourcePlayer.VideoSource = source;
            videoSourcePlayer.Start();

            // reset stop watch
            stopWatch = null;

            // start timer
            timer.Start();

            this.Cursor = Cursors.Default;
        }

        // Close video source if it is running
        private void CloseCurrentVideoSource()
        {
            if (videoSourcePlayer.VideoSource != null)
            {
                videoSourcePlayer.SignalToStop();

                // wait ~ 3 seconds
                for (int i = 0; i < 30; i++)
                {
                    if (!videoSourcePlayer.IsRunning)
                        break;
                    System.Threading.Thread.Sleep(100);
                }

                if (videoSourcePlayer.IsRunning)
                {
                    videoSourcePlayer.Stop();
                }

                videoSourcePlayer.VideoSource = null;
            }
        }

        // New frame received by the player
        private void videoSourcePlayer_NewFrame(object sender, ref Bitmap image)
        {
            DateTime now = DateTime.Now;
            Graphics g = Graphics.FromImage(image);

            // paint current time
            SolidBrush brush = new SolidBrush(Color.Red);
            g.DrawString(now.ToString(), this.Font, brush, new PointF(5, 5));
            brush.Dispose();

            g.Dispose();
        }

        // On timer event - gather statistics
        private void timer_Tick(object sender, EventArgs e)
        {
            IVideoSource videoSource = videoSourcePlayer.VideoSource;

            if (videoSource != null)
            {
                // get number of frames since the last timer tick
                int framesReceived = videoSource.FramesReceived;

                if (stopWatch == null)
                {
                    stopWatch = new Stopwatch();
                    stopWatch.Start();
                }
                else
                {
                    stopWatch.Stop();

                    float fps = 1000.0f * framesReceived / stopWatch.ElapsedMilliseconds;
                    fpsLabel.Text = fps.ToString("F2") + " fps";

                    stopWatch.Reset();
                    stopWatch.Start();
                }
            }
        }

        private void writetext(object sender, PaintEventArgs e)
        {
            // Create string to draw.
            String drawString = "nessuna connesione";

            // Create font and brush.
            Font drawFont = new Font("Arial", 16);
            SolidBrush drawBrush = new SolidBrush(Color.Yellow);



            // Create point for upper-left corner of drawing.
            PointF drawPoint = new PointF(150.0F, 150.0F);

            // Draw string to screen.
            e.Graphics.DrawString(drawString, drawFont, drawBrush, drawPoint);

            

        }
        
}