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


namespace Radeon_HD_7000_BIOS_Editor
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        #region Variables Initialization

        public static string filePath;
        public static byte[] searchStringPL;
        public static int position;
        public static string selectedLimit;

        #endregion

        #region Open File Dialog
        private void openBiosItem_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                filePath = openFileDialog1.FileName;
                BiosRW.readToString(filePath);
                if (comboBoxVga.Text != null)
                {
                    IndexOf(BiosRW.bios, searchStringPL);
                }
            }
        }

        #endregion

        #region Exit

        private void exitItem_Click(object sender, EventArgs e)
        {
            Close();
        }

        #endregion

        #region Search strings for Power Limit

        private void comboBoxVga_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBoxVga.Text == "Radeon HD 7700")
            {
                searchStringPL = new byte[] { 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x04 };
            }

            if (comboBoxVga.Text == "Radeon HD 7800")
            {
                searchStringPL = new byte[] { 0x00, 0x00, 0x14, 0x00, 0x4B, 0x00, 0x04 };
            }

            if (comboBoxVga.Text == "Radeon HD 7900")
            {
                searchStringPL = new byte[] { 0x00, 0x00, 0x14, 0x00, 0x40, 0x00, 0x04 };
            }

            if (filePath != null) IndexOf(BiosRW.bios, searchStringPL);
        }

        #endregion

        #region Searching Position in File

        public void IndexOf(byte[] ByteArrayToSearch, byte[] ByteArrayToFind)
        {
            if (BiosRW.bios != null && searchStringPL != null)
            {
                ByteArrayToFind[2] = 0x14;
                for (int i = 0; i < 2; i++)
                {
                    Encoding encoding = Encoding.GetEncoding(1252);

                    string toSearch = encoding.GetString(ByteArrayToSearch, 0, ByteArrayToSearch.Length);
                    string toFind = encoding.GetString(ByteArrayToFind, 0, ByteArrayToFind.Length);
                    position = toSearch.IndexOf(toFind, StringComparison.Ordinal);
                    if (position != -1) break;
                    if (ByteArrayToFind[2] == 0x14) ByteArrayToFind[2] = 0x32;
                }
                if (position == -1)
                {
                    FormReset();
                    MessageBox.Show("Check if your BIOS and VGA match.", "Can't Patch!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    RefreshForm();
                }
            }
        }

        #endregion

        #region Resetting Form values

        public void FormReset()
        {
            labelPL.Text = "Current Power Limit: N/A";
            btnPatch.Enabled = false;
            radioBtnPl20.Checked = false;
            radioBtnPl50.Checked = false;
        }

        #endregion

        #region Patch Button Click

        private void btnPatch_Click(object sender, EventArgs e)
        {
            if (BiosRW.bios == null && searchStringPL == null)
            {
                MessageBox.Show("Select any BIOS file and your VGA model!", "Can't Patch!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            if (BiosRW.bios == null && searchStringPL != null)
            {
                MessageBox.Show("Select any BIOS file!.", "Can't Patch!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            if (BiosRW.bios != null && searchStringPL == null)
            {
                MessageBox.Show("Select your VGA model!", "Can't Patch!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            if (selectedLimit != Convert.ToString(BiosRW.bios[position + 2]))
            {
                BiosRW.editBios();
                BiosRW.writeToFile();
                MessageBox.Show("Patched succesfully!", "Congratulations!", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show("You haven't selected any changes!", "Nothing to patch!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        #endregion

        #region Form Values Refreshing

        private void RefreshForm()
        {
            labelPL.Text = "Current Power Limit: ±" + (Convert.ToString(BiosRW.bios[position + 2])) + "%";
            if ((Convert.ToString(BiosRW.bios[position + 2])) == "20")
            {
                radioBtnPl20.Checked = true;
            }
            if ((Convert.ToString(BiosRW.bios[position + 2])) == "50")
            {
                radioBtnPl50.Checked = true;
            }
            btnPatch.Enabled = true;
        }

        #endregion

        #region Opening Help Forms

        private void aboutItem_Click(object sender, EventArgs e)
        {
            AboutForm aboutform = new AboutForm();
            aboutform.Owner = this;
            aboutform.ShowDialog();
        }

        private void helpItem_Click(object sender, EventArgs e)
        {
            HelpForm helpform = new HelpForm();
            helpform.Owner = this;
            helpform.Show();
        }

        #endregion

        #region Selected Power Limit Changes Event

        private void radioBtnPl20_CheckedChanged(object sender, EventArgs e)
        {
            if (radioBtnPl20.Checked == true) selectedLimit = "20";
        }

        private void radioBtnPl50_CheckedChanged(object sender, EventArgs e)
        {
            if (radioBtnPl50.Checked == true) selectedLimit = "50";
        }

        #endregion

    }
}

//
//
//

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace Radeon_HD_7000_BIOS_Editor
{
    public static class BiosRW
    {
        public static byte[] bios;
        public static byte[] modBios;

        public static void readToString(string filePath)
        {
            FileStream fs = new FileStream(filePath, FileMode.Open);
            BinaryReader br = new BinaryReader(fs);
            {
                bios = br.ReadBytes(Convert.ToInt32(fs.Length));
            }
            br.Close();
            fs.Close();
        }

        public static void editBios()
        {
            modBios = bios;
            modBios[MainForm.position + 2] = Convert.ToByte(MainForm.selectedLimit);
        }

        public static void writeToFile()
        {
            string newpath = "";
            string[] path = MainForm.filePath.Split('\\');
            for (int i=0; i < path.Length -1; i++)
            {
                newpath += path[i];
            }
            FileStream fs = new FileStream(newpath + "\\_NewBios.rom", FileMode.Create);
            BinaryWriter bw = new BinaryWriter(fs);
            bw.Write(modBios);
            bw.Close();
            fs.Close();
        }
    }
}