hey all, i have a project that consists to send video stream from a raspberry pi to any other windows form application . the client side ( developed in python on the raspberry is working)

import io import socket import struct import time import picamera

Connect a client socket to my_server:8000 (change my_server to the

hostname of your server)

client_socket = socket.socket() client_socket.connect(('my_server', 8000))

Make a file-like object out of the connection

connection = client_socket.makefile('wb') try:

with picamera.PiCamera() as camera:
    camera.resolution = (640, 480)
    # Start a preview and let the camera warm up for 2 seconds
    camera.start_preview()
    time.sleep(2)

    # Note the start time and construct a stream to hold image data
    # temporarily (we could write it directly to connection but in this
    # case we want to find out the size of each capture first to keep
    # our protocol simple)
    start = time.time()
    stream = io.BytesIO()
    for foo in camera.capture_continuous(stream, 'jpeg'):
        # Write the length of the capture to the stream and flush to
        # ensure it actually gets sent
        connection.write(struct.pack('<L', stream.tell()))
        connection.flush()
        # Rewind the stream and send the image data over the wire
        stream.seek(0)
        connection.write(stream.read())
        # If we've been capturing for more than 30 seconds, quit
        if time.time() - start > 30:
            break
        # Reset the stream for the next capture
        stream.seek(0)
        stream.truncate()
# Write a length of zero to the stream to signal we're done
connection.write(struct.pack('<L', 0))

finally:

connection.close()
client_socket.close()

in the server side on my desktop, when i run the project on visual studio , it's connected and receives the stream but the form is freezed and not responding and no image is displayed in the picturebox but when i stop the program , the image is saved on my desktop. i want to see the image in the picturebox .

i will be so thankful if you can help me

this is the code in c# :

public partial class Form1 : Form

{
    static string output = "";
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }
    public void createListener()
    {
        // Create an instance of the TcpListener class.
        TcpListener tcpListener = null;
        IPAddress ipAddress = IPAddress.Parse("0.0.0.0"); //Dns.GetHostEntry("localhost").AddressList[0];
        try
        {
            // Set the listener on the local IP address 
            // and specify the port.
            tcpListener = new TcpListener(ipAddress, 8000);
            tcpListener.Start();
            output = "Waiting for a connection...";
            Console.WriteLine(output);
        }
        catch (Exception e)
        {
            output = "Error: " + e.ToString();
            MessageBox.Show(output);
        }
        while (true)
        {
            // Always use a Sleep call in a while(true) loop 
            // to avoid locking up your CPU.
            Thread.Sleep(10);
            // Create a TCP socket. 
            // If you ran this server on the desktop, you could use 
            //Socket socket = tcpListener.AcceptSocket();
            Console.WriteLine("zabatit");
            // for greater flexibility.
            TcpClient tcpClient = tcpListener.AcceptTcpClient();
            // Read the data stream from the client. 
            Console.WriteLine("zabatit1");
            byte[] bytes = new byte[256];
            NetworkStream stream = tcpClient.GetStream();
            stream.Read(bytes, 0, bytes.Length);
            Console.WriteLine("zabatit2");
            Image ii = Image.FromStream(stream);
            ii.Size.Width.Equals(12);
            ii.Size.Height.Equals(12);

            PictureBox PictureBox1 = new PictureBox();
            Console.WriteLine("zabatit3");
            pictureBox1.Image = ii;
            pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
            ii.Save(@"c:\users\ibrahim\desktop\testing1.jpg");
            pictureBox1.Location = new Point(390, 50);
            this.Controls.Add(PictureBox1);
                      
            //SocketHelper helper = new SocketHelper();
            // helper.processMsg(tcpClient, stream, bytes);
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        this.createListener();
    }
}

}

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Edité par bassilaibrahim 26 décembre 2014 à 15:23:23