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RSS > Faking freetrack server

CyberVillain	#1 02/01/2012 - 11h41 Top
Class : Apprenti Posts : 14 Registered on : 07/11/2011 Off line	I'm making a little headtracking software for the Sparkfun 9DOF IMU. I want to send data to the freetrackclient.dll so all programs that implement that dll works with my program. How does the freetrack server send its data to the client? Windows messages, ethernet, MSMQ?
CyberVillain	#2 02/01/2012 - 23h00 Top
Class : Apprenti Posts : 14 Registered on : 07/11/2011 Off line	I reversed engineered the code A simple test program using System; using System.IO.MemoryMappedFiles; using System.Runtime.InteropServices; using System.Threading; namespace FakeFreeTrack { [StructLayout(LayoutKind.Sequential)] public struct TFreeTrackData { public int DataID; public int CamWidth; public int CamHeight; // virtual pose public float Yaw; // positive yaw to the left public float Pitch; // positive pitch up public float Roll; // positive roll to the left public float X; public float Y; public float Z; // raw pose with no smoothing, sensitivity, response curve etc. public float RawYaw; public float RawPitch; public float RawRoll; public float RawX; public float RawY; public float RawZ; // raw points, sorted by Y, origin top left corner public float X1; public float Y1; public float X2; public float Y2; public float X3; public float Y3; public float X4; public float Y4; }; class Program { static void Main(string[] args) { var random = new Random(); var count = 0; using (var memoryMappedFile = MemoryMappedFile.CreateOrOpen("FT_SharedMem", Marshal.SizeOf(typeof(TFreeTrackData)))) { using (var accessor = memoryMappedFile.CreateViewAccessor()) { while (true) { count++; TFreeTrackData model = new TFreeTrackData(); model.DataID = count; model.CamWidth = 320; model.CamHeight = 240; model.Yaw = random.Next(0, 120) / (float)(180.0 / Math.PI); accessor.Write(0, ref model); Thread.Sleep(5); } } } } } } Edited by CyberVillain on 02/01/2012 at 23h15.

CyberVillain

#1 02/01/2012 - 11h41

Top

Class : Apprenti
Posts : 14
Registered on : 07/11/2011

Off line

I'm making a little headtracking software for the Sparkfun 9DOF IMU. I want to send data to the freetrackclient.dll so all programs that implement that dll works with my program. How does the freetrack server send its data to the client? Windows messages, ethernet, MSMQ?

CyberVillain

#2 02/01/2012 - 23h00

Top

Class : Apprenti
Posts : 14
Registered on : 07/11/2011

Off line

I reversed engineered the code

A simple test program



using System;

using System.IO.MemoryMappedFiles;

using System.Runtime.InteropServices;

using System.Threading;



namespace FakeFreeTrack

{

    [StructLayout(LayoutKind.Sequential)]

    public struct TFreeTrackData

    {

        public int DataID;

        public int CamWidth;

        public int CamHeight;

        // virtual pose

        public float Yaw;   // positive yaw to the left

        public float Pitch; // positive pitch up

        public float Roll;  // positive roll to the left

        public float X;

        public float Y;

        public float Z;

        // raw pose with no smoothing, sensitivity, response curve etc. 

        public float RawYaw;

        public float RawPitch;

        public float RawRoll;

        public float RawX;

        public float RawY;

        public float RawZ;

        // raw points, sorted by Y, origin top left corner

        public float X1;

        public float Y1;

        public float X2;

        public float Y2;

        public float X3;

        public float Y3;

        public float X4;

        public float Y4;

    };



    class Program

    {

        static void Main(string[] args)

        {

            var random = new Random();

            var count = 0;

                using (var memoryMappedFile = MemoryMappedFile.CreateOrOpen("FT_SharedMem", Marshal.SizeOf(typeof(TFreeTrackData))))

                {

                    using (var accessor = memoryMappedFile.CreateViewAccessor())

                    {

                        while (true)

                        {

                            count++;

                            TFreeTrackData model =  new TFreeTrackData();

                            model.DataID = count;

                            model.CamWidth = 320;

                            model.CamHeight = 240;

                            model.Yaw = random.Next(0, 120) / (float)(180.0 / Math.PI);



                            accessor.Write(0, ref model);

                            Thread.Sleep(5);

                        }

                    }

                }

        }

    }

}

Edited by CyberVillain on 02/01/2012 at 23h15.

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