Notes

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
using System.Data;
using System.Collections;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.IO;
using System.Threading;

using DexterLib;

namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
string fileName; //used to save the movie file name
string storagePath; //used for the path where we save files
MediaDetClass md; //needed to extract pictures
static int counter = 0; //to generate different file names
float interval = 1.0f; //default time interval

public Form1()
{
InitializeComponent();

//initialize a few properties
trackBar1.Minimum = trackBar1.Maximum = 0;
this.MaximizeBox = false;

storagePath = Application.StartupPath + "\resimler\";

//if the storage directory doesn't exist we create it
if (!Directory.Exists(storagePath))
Directory.CreateDirectory(storagePath);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
try
{
//try to get rid of all the tmp files created during the session
if (pictureBox1.Image != null)
pictureBox1.Image.Dispose();
string[] bmpFiles = Directory.GetFiles(storagePath, "*.bmp");
for (int i = 0; i < bmpFiles.Length; i++)
System.IO.File.Delete(bmpFiles[i]);
}
catch (Exception) { MessageBox.Show("Couldn't delete all temporary files"); }
base.Dispose(disposing);
}
private void pictureBox1_Click(object sender, EventArgs e)
{

}

private void button5_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
if (dlg.ShowDialog() == DialogResult.OK)
{
try
{
fileName = dlg.FileName;
this.Text = Path.GetFileName(dlg.FileName);

//create the MediaDetClass and set its properties
md = new MediaDetClass();
md.Filename = fileName;
md.CurrentStream = 0;
int len = (int)md.StreamLength;

//fix a few Gui stuff
label1.Text = "Frame: " + len.ToString();
trackBar1.Minimum = 0;
trackBar1.Maximum = len;
trackBar1.Value = 0;

//make sure we have a unique name then call WriteBitmapBits to
//a file then use it to fill the picture box

}
catch (Exception) { MessageBox.Show("Coulnd't open movie file"); }
}
}

private void button2_Click(object sender, EventArgs e)
{
if (md == null) return;

ScanThread st = new ScanThread(storagePath, fileName, interval);
do
{
//waits until the processing is done, displaying the
//number of the file we are currently saving
Thread.Sleep(1000);
label1.Text = "Kaydediliyor: " + counter.ToString();
label1.Invalidate();
label1.Update();
} while (st.t.IsAlive);
label1.Text = "Tamamlandı";
}
class ScanThread
{
MediaDetClass md;
string fileName;
string storagePath;
float interval;
public Thread t;
public ScanThread(string s, string f, float ival)
{
storagePath = s;
fileName = f;
interval = ival;
t = new Thread(new ThreadStart(this.Scan));
t.Start();
}
void Scan()
{
md = new MediaDetClass();
Image img;
md.Filename = fileName;
md.CurrentStream = 0;
int len = (int)md.StreamLength;
for (float i = 0.0f; i < len; i = i + interval)
{
counter++;
string fBitmapName = storagePath + Path.GetFileNameWithoutExtension(fileName)
+ "_" + counter.ToString();
md.WriteBitmapBits(i, 320, 240, fBitmapName + ".bmp");
img = Image.FromFile(fBitmapName + ".bmp");
img.Save(fBitmapName + ".jpg", ImageFormat.Jpeg);
img.Dispose();
System.IO.File.Delete(fBitmapName + ".bmp");
}
}
}

private void button1_Click(object sender, EventArgs e)
{


string fBitmapName = storagePath + Path.GetFileNameWithoutExtension(fileName)
+ "_" + counter.ToString();
md.WriteBitmapBits(trackBar1.Value, 320, 240, fBitmapName + ".bmp");

//save the picture as jpeg
Image img = Image.FromFile(fBitmapName + ".bmp");
img.Save(fBitmapName + ".jpg", ImageFormat.Jpeg);
img.Dispose();
counter++;
}

private void button3_Click(object sender, EventArgs e)
{
if (trackBar1.Value >= trackBar1.Minimum + 1)
trackBar1.Value = trackBar1.Value - 1;
}

private void button4_Click(object sender, EventArgs e)
{
if (trackBar1.Value <= trackBar1.Maximum - 1)
trackBar1.Value = trackBar1.Value + 1;
}
private void trackBar1_ValueChanged(object sender, System.EventArgs e)
{
if (md == null) return;
pictureBox1.Image.Dispose();
label1.Text = "Cur Pos: " + trackBar1.Value.ToString();
string fBitmapName = storagePath + "tmp" + counter.ToString() + ".bmp";
counter++;
md.WriteBitmapBits(trackBar1.Value, 320, 240, fBitmapName);
pictureBox1.Image = new Bitmap(fBitmapName);

}

}
}