using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using NEROLib;
using System.IO;

namespace NeroFiddlesCOM.NET
{
	/// <summary>
	/// Summary description for BurnIsoAudioForm.
	/// </summary>
	public class BurnIsoAudioForm : System.Windows.Forms.Form
	{
		private NeroDrive m_drive;
		private Nero m_nero;
		private NeroAudioTrack[] m_audioTracks;

		private int m_iAudioFile;
		private FileStream m_fs;
		private bool m_bError;
		private bool m_bEof;

		private ChooseBurnFlagsForm m_frmChooseBurnFlags;
		private ChooseSessionForm m_frmChooseSession;
		private ChooseSpeedForm m_frmChooseWriteSpeed;
		private ChooseMediaForm m_frmChooseMedia;

		private _INeroDriveEvents_OnDoneImport2EventHandler m_evOnDoneImport2;
		private System.Windows.Forms.Button c_Burn;
		private System.Windows.Forms.Button c_Cancel;
		private System.Windows.Forms.TextBox c_Device;
		private System.Windows.Forms.Label label8;
		private System.Windows.Forms.ListView c_FilesAndFolders;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button c_AddFiles;
		private System.Windows.Forms.Button c_AddFolders;
		private System.Windows.Forms.Button c_RemoveFilesAndFolders;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button c_AddAudioFiles;
		private System.Windows.Forms.Button c_RemoveAudioFiles;
		private System.Windows.Forms.ListView c_AudioFiles;
		private System.Windows.Forms.TextBox c_Title;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox c_Artist;
		private System.Windows.Forms.ColumnHeader columnHeader5;
		private System.Windows.Forms.ColumnHeader columnHeader6;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.TextBox c_ISOVolumeName;
		private System.Windows.Forms.Button c_ChangeBurnFlags;
		private System.Windows.Forms.TextBox c_TextSettings;
		private System.Windows.Forms.Button c_ChooseSession;
		private System.Windows.Forms.Button c_WriteSpeed;
		private System.Windows.Forms.Button c_ChooseMedia;
		private System.Windows.Forms.Button c_EstimateTrackSize;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.CheckBox c_UseEvent;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public BurnIsoAudioForm(NeroDrive drive, Nero nero)
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			m_drive = drive;
			m_nero = nero;

			m_frmChooseBurnFlags = new ChooseBurnFlagsForm ();
			m_frmChooseSession = new ChooseSessionForm (m_drive);
			m_frmChooseWriteSpeed = new ChooseSpeedForm (m_drive, true);
			m_frmChooseMedia = new ChooseMediaForm (m_nero);
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.c_Burn = new System.Windows.Forms.Button();
			this.c_Cancel = new System.Windows.Forms.Button();
			this.c_Device = new System.Windows.Forms.TextBox();
			this.label8 = new System.Windows.Forms.Label();
			this.c_FilesAndFolders = new System.Windows.Forms.ListView();
			this.columnHeader5 = new System.Windows.Forms.ColumnHeader();
			this.label1 = new System.Windows.Forms.Label();
			this.c_AddFiles = new System.Windows.Forms.Button();
			this.c_AddFolders = new System.Windows.Forms.Button();
			this.c_RemoveFilesAndFolders = new System.Windows.Forms.Button();
			this.label2 = new System.Windows.Forms.Label();
			this.c_AddAudioFiles = new System.Windows.Forms.Button();
			this.c_RemoveAudioFiles = new System.Windows.Forms.Button();
			this.c_AudioFiles = new System.Windows.Forms.ListView();
			this.columnHeader6 = new System.Windows.Forms.ColumnHeader();
			this.c_Title = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.c_Artist = new System.Windows.Forms.TextBox();
			this.label7 = new System.Windows.Forms.Label();
			this.c_ISOVolumeName = new System.Windows.Forms.TextBox();
			this.c_ChangeBurnFlags = new System.Windows.Forms.Button();
			this.c_TextSettings = new System.Windows.Forms.TextBox();
			this.c_ChooseSession = new System.Windows.Forms.Button();
			this.c_WriteSpeed = new System.Windows.Forms.Button();
			this.c_ChooseMedia = new System.Windows.Forms.Button();
			this.c_EstimateTrackSize = new System.Windows.Forms.Button();
			this.label5 = new System.Windows.Forms.Label();
			this.c_UseEvent = new System.Windows.Forms.CheckBox();
			this.SuspendLayout();
			// 
			// c_Burn
			// 
			this.c_Burn.Location = new System.Drawing.Point(464, 8);
			this.c_Burn.Name = "c_Burn";
			this.c_Burn.TabIndex = 25;
			this.c_Burn.Text = "Burn";
			this.c_Burn.Click += new System.EventHandler(this.c_Burn_Click);
			// 
			// c_Cancel
			// 
			this.c_Cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.c_Cancel.Location = new System.Drawing.Point(464, 40);
			this.c_Cancel.Name = "c_Cancel";
			this.c_Cancel.TabIndex = 26;
			this.c_Cancel.Text = "Cancel";
			// 
			// c_Device
			// 
			this.c_Device.Location = new System.Drawing.Point(64, 8);
			this.c_Device.Name = "c_Device";
			this.c_Device.ReadOnly = true;
			this.c_Device.Size = new System.Drawing.Size(248, 20);
			this.c_Device.TabIndex = 24;
			this.c_Device.Text = "";
			// 
			// label8
			// 
			this.label8.Location = new System.Drawing.Point(8, 8);
			this.label8.Name = "label8";
			this.label8.Size = new System.Drawing.Size(56, 16);
			this.label8.TabIndex = 23;
			this.label8.Text = "Device:";
			// 
			// c_FilesAndFolders
			// 
			this.c_FilesAndFolders.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																								this.columnHeader5});
			this.c_FilesAndFolders.FullRowSelect = true;
			this.c_FilesAndFolders.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
			this.c_FilesAndFolders.HideSelection = false;
			this.c_FilesAndFolders.Location = new System.Drawing.Point(8, 96);
			this.c_FilesAndFolders.Name = "c_FilesAndFolders";
			this.c_FilesAndFolders.Size = new System.Drawing.Size(216, 136);
			this.c_FilesAndFolders.TabIndex = 7;
			this.c_FilesAndFolders.View = System.Windows.Forms.View.Details;
			// 
			// columnHeader5
			// 
			this.columnHeader5.Text = "File or folder";
			this.columnHeader5.Width = 194;
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 80);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(192, 16);
			this.label1.TabIndex = 6;
			this.label1.Text = "Files and folders to burn in ISO track:";
			// 
			// c_AddFiles
			// 
			this.c_AddFiles.Location = new System.Drawing.Point(8, 240);
			this.c_AddFiles.Name = "c_AddFiles";
			this.c_AddFiles.Size = new System.Drawing.Size(64, 23);
			this.c_AddFiles.TabIndex = 11;
			this.c_AddFiles.Text = "Add files";
			this.c_AddFiles.Click += new System.EventHandler(this.c_AddFiles_Click);
			// 
			// c_AddFolders
			// 
			this.c_AddFolders.Location = new System.Drawing.Point(80, 240);
			this.c_AddFolders.Name = "c_AddFolders";
			this.c_AddFolders.Size = new System.Drawing.Size(64, 23);
			this.c_AddFolders.TabIndex = 12;
			this.c_AddFolders.Text = "Add folders";
			this.c_AddFolders.Click += new System.EventHandler(this.c_AddFolders_Click);
			// 
			// c_RemoveFilesAndFolders
			// 
			this.c_RemoveFilesAndFolders.Location = new System.Drawing.Point(152, 240);
			this.c_RemoveFilesAndFolders.Name = "c_RemoveFilesAndFolders";
			this.c_RemoveFilesAndFolders.Size = new System.Drawing.Size(72, 23);
			this.c_RemoveFilesAndFolders.TabIndex = 13;
			this.c_RemoveFilesAndFolders.Text = "Remove";
			this.c_RemoveFilesAndFolders.Click += new System.EventHandler(this.c_RemoveFilesAndFolders_Click);
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(232, 80);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(192, 16);
			this.label2.TabIndex = 8;
			this.label2.Text = "Audio files to burn:";
			// 
			// c_AddAudioFiles
			// 
			this.c_AddAudioFiles.Location = new System.Drawing.Point(232, 240);
			this.c_AddAudioFiles.Name = "c_AddAudioFiles";
			this.c_AddAudioFiles.Size = new System.Drawing.Size(72, 23);
			this.c_AddAudioFiles.TabIndex = 14;
			this.c_AddAudioFiles.Text = "Add audio";
			this.c_AddAudioFiles.Click += new System.EventHandler(this.c_AddAudioFiles_Click);
			// 
			// c_RemoveAudioFiles
			// 
			this.c_RemoveAudioFiles.Location = new System.Drawing.Point(312, 240);
			this.c_RemoveAudioFiles.Name = "c_RemoveAudioFiles";
			this.c_RemoveAudioFiles.TabIndex = 15;
			this.c_RemoveAudioFiles.Text = "Remove";
			this.c_RemoveAudioFiles.Click += new System.EventHandler(this.c_RemoveAudioFiles_Click);
			// 
			// c_AudioFiles
			// 
			this.c_AudioFiles.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																						   this.columnHeader6});
			this.c_AudioFiles.FullRowSelect = true;
			this.c_AudioFiles.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
			this.c_AudioFiles.HideSelection = false;
			this.c_AudioFiles.Location = new System.Drawing.Point(232, 96);
			this.c_AudioFiles.Name = "c_AudioFiles";
			this.c_AudioFiles.Size = new System.Drawing.Size(200, 112);
			this.c_AudioFiles.TabIndex = 9;
			this.c_AudioFiles.View = System.Windows.Forms.View.Details;
			// 
			// columnHeader6
			// 
			this.columnHeader6.Text = "Audio file";
			this.columnHeader6.Width = 177;
			// 
			// c_Title
			// 
			this.c_Title.Location = new System.Drawing.Point(336, 56);
			this.c_Title.Name = "c_Title";
			this.c_Title.Size = new System.Drawing.Size(96, 20);
			this.c_Title.TabIndex = 5;
			this.c_Title.Text = "";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(336, 40);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(100, 16);
			this.label3.TabIndex = 4;
			this.label3.Text = "Title:";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(240, 40);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(72, 16);
			this.label4.TabIndex = 2;
			this.label4.Text = "Artist:";
			// 
			// c_Artist
			// 
			this.c_Artist.Location = new System.Drawing.Point(232, 56);
			this.c_Artist.Name = "c_Artist";
			this.c_Artist.Size = new System.Drawing.Size(96, 20);
			this.c_Artist.TabIndex = 3;
			this.c_Artist.Text = "";
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(8, 40);
			this.label7.Name = "label7";
			this.label7.Size = new System.Drawing.Size(112, 16);
			this.label7.TabIndex = 0;
			this.label7.Text = "ISO Volume Name:";
			// 
			// c_ISOVolumeName
			// 
			this.c_ISOVolumeName.Location = new System.Drawing.Point(8, 56);
			this.c_ISOVolumeName.Name = "c_ISOVolumeName";
			this.c_ISOVolumeName.Size = new System.Drawing.Size(112, 20);
			this.c_ISOVolumeName.TabIndex = 1;
			this.c_ISOVolumeName.Text = "Test";
			// 
			// c_ChangeBurnFlags
			// 
			this.c_ChangeBurnFlags.Location = new System.Drawing.Point(440, 96);
			this.c_ChangeBurnFlags.Name = "c_ChangeBurnFlags";
			this.c_ChangeBurnFlags.Size = new System.Drawing.Size(96, 23);
			this.c_ChangeBurnFlags.TabIndex = 18;
			this.c_ChangeBurnFlags.Text = "Burn Flags";
			this.c_ChangeBurnFlags.Click += new System.EventHandler(this.c_ChangeBurnFlags_Click);
			// 
			// c_TextSettings
			// 
			this.c_TextSettings.Location = new System.Drawing.Point(8, 288);
			this.c_TextSettings.Multiline = true;
			this.c_TextSettings.Name = "c_TextSettings";
			this.c_TextSettings.ReadOnly = true;
			this.c_TextSettings.ScrollBars = System.Windows.Forms.ScrollBars.Both;
			this.c_TextSettings.Size = new System.Drawing.Size(424, 128);
			this.c_TextSettings.TabIndex = 17;
			this.c_TextSettings.Text = "";
			// 
			// c_ChooseSession
			// 
			this.c_ChooseSession.Location = new System.Drawing.Point(440, 128);
			this.c_ChooseSession.Name = "c_ChooseSession";
			this.c_ChooseSession.Size = new System.Drawing.Size(96, 23);
			this.c_ChooseSession.TabIndex = 19;
			this.c_ChooseSession.Text = "Choose Session";
			this.c_ChooseSession.Click += new System.EventHandler(this.c_ChooseSession_Click);
			// 
			// c_WriteSpeed
			// 
			this.c_WriteSpeed.Location = new System.Drawing.Point(440, 160);
			this.c_WriteSpeed.Name = "c_WriteSpeed";
			this.c_WriteSpeed.Size = new System.Drawing.Size(96, 23);
			this.c_WriteSpeed.TabIndex = 20;
			this.c_WriteSpeed.Text = "Write speed";
			this.c_WriteSpeed.Click += new System.EventHandler(this.c_WriteSpeed_Click);
			// 
			// c_ChooseMedia
			// 
			this.c_ChooseMedia.Location = new System.Drawing.Point(440, 192);
			this.c_ChooseMedia.Name = "c_ChooseMedia";
			this.c_ChooseMedia.Size = new System.Drawing.Size(96, 23);
			this.c_ChooseMedia.TabIndex = 21;
			this.c_ChooseMedia.Text = "Choose Media";
			this.c_ChooseMedia.Click += new System.EventHandler(this.c_ChooseMedia_Click);
			// 
			// c_EstimateTrackSize
			// 
			this.c_EstimateTrackSize.Location = new System.Drawing.Point(440, 240);
			this.c_EstimateTrackSize.Name = "c_EstimateTrackSize";
			this.c_EstimateTrackSize.Size = new System.Drawing.Size(96, 24);
			this.c_EstimateTrackSize.TabIndex = 22;
			this.c_EstimateTrackSize.Text = "Estimate Size";
			this.c_EstimateTrackSize.Click += new System.EventHandler(this.c_EstimateTrackSize_Click);
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(8, 272);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(100, 16);
			this.label5.TabIndex = 16;
			this.label5.Text = "Settings:";
			// 
			// c_UseEvent
			// 
			this.c_UseEvent.Location = new System.Drawing.Point(232, 216);
			this.c_UseEvent.Name = "c_UseEvent";
			this.c_UseEvent.Size = new System.Drawing.Size(200, 16);
			this.c_UseEvent.TabIndex = 10;
			this.c_UseEvent.Text = "Use event (use RAW files only)";
			// 
			// BurnIsoAudioForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.c_Cancel;
			this.ClientSize = new System.Drawing.Size(546, 424);
			this.Controls.Add(this.c_UseEvent);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.c_TextSettings);
			this.Controls.Add(this.c_Title);
			this.Controls.Add(this.c_Device);
			this.Controls.Add(this.c_Artist);
			this.Controls.Add(this.c_ISOVolumeName);
			this.Controls.Add(this.c_ChangeBurnFlags);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.c_AddFiles);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.c_FilesAndFolders);
			this.Controls.Add(this.label8);
			this.Controls.Add(this.c_Cancel);
			this.Controls.Add(this.c_Burn);
			this.Controls.Add(this.c_AddFolders);
			this.Controls.Add(this.c_RemoveFilesAndFolders);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.c_AddAudioFiles);
			this.Controls.Add(this.c_RemoveAudioFiles);
			this.Controls.Add(this.c_AudioFiles);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.label7);
			this.Controls.Add(this.c_ChooseSession);
			this.Controls.Add(this.c_WriteSpeed);
			this.Controls.Add(this.c_ChooseMedia);
			this.Controls.Add(this.c_EstimateTrackSize);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "BurnIsoAudioForm";
			this.ShowInTaskbar = false;
			this.Text = "BurnIsoAudio";
			this.ResumeLayout(false);

		}
		#endregion

		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad (e);

			c_Device.Text = m_drive.DeviceName;
			UpdateSettings ();
		}

		private void c_AddFiles_Click(object sender, System.EventArgs e)
		{
			// When adding files, show the open file dialog.
			// 
			OpenFileDialog dlg = new OpenFileDialog ();
			dlg.CheckFileExists = true;
			dlg.CheckPathExists = true;
			dlg.Multiselect = true;
			dlg.Filter = "All files (*.*)|*.*";

			if (DialogResult.OK == dlg.ShowDialog (this))
			{
				// We allowed multiple selection, so put all
				// filenames in the list view.
				// 
				foreach (string sFilename in dlg.FileNames)
				{
					c_FilesAndFolders.Items.Add (sFilename);
				}
			}
		}

		// This is a helper function that removes all selected
		// items in a list view.
		// 
		private void RemoveSelected (ListView lv)
		{
			foreach (ListViewItem lvi in lv.SelectedItems)
			{
				lv.Items.Remove (lvi);
			}
		}

		private void c_RemoveFilesAndFolders_Click(object sender, System.EventArgs e)
		{
			RemoveSelected (c_FilesAndFolders);
		}

		private void c_RemoveAudioFiles_Click(object sender, System.EventArgs e)
		{
			RemoveSelected (c_AudioFiles);
		}

		private void c_AddAudioFiles_Click(object sender, System.EventArgs e)
		{
			// When adding audio files, show the open file dialog.
			// 
			OpenFileDialog dlg = new OpenFileDialog ();
			dlg.CheckFileExists = true;
			dlg.CheckPathExists = true;
			dlg.Multiselect = true;
			dlg.Filter = "All audio files|*.mp3;*.wav;*.aac;*.mp4;*.aif;*.vqf;*.wma|All files (*.*)|*.*";

			if (DialogResult.OK == dlg.ShowDialog (this))
			{
				foreach (string sFilename in dlg.FileNames)
				{
					c_AudioFiles.Items.Add (sFilename);
				}
			}
		}

		private void c_AddFolders_Click(object sender, System.EventArgs e)
		{
			Utility.BrowseForFolder.BrowseForFolderClass bff = new Utility.BrowseForFolder.BrowseForFolderClass ();
			string sFolder = bff.BrowseForFolder ("Please choose a folder:");

			if (sFolder != "")
			{
				c_FilesAndFolders.Items.Add (sFolder);
			}
		}

		// The following helper function assembles a NeroAudioTracks collection
		// from the audio files in a list view.
		// 
		private NeroAudioTracks GetAudioTracks ()
		{
			NeroAudioTracks audioTracks = null;
			m_iAudioFile = 0;
			m_bError = false;
			m_bEof = false;
			
			// If there is at least one audio file...
			// 
			if (c_AudioFiles.Items.Count > 0)
			{
				// Create the NeroAudioTracks collection object. Also,
				// create the array of NeroAudioTrack objects. This is
				// very important so that the events on the NeroAudioTrack
				// object work properly. In this loop we create as many
				// NeroAudioTrack object as there are items in the list view.
				// each of these objects is added to NeroAudioTracks collection.
				// As this is only a COM wrapper, not a native collection,
				// the NeroAudioTrack COM object is passed to the collection
				// and the connection with the .NET wrapper is lost. Therefore
				// in order for the events (that we subscribe to here) to work,
				// the .NET object needs to live as well. We keep those in a
				// separate array.
				// 
				// This is all not needed at all if we don't use events.
				// 
				audioTracks = new NeroAudioTracksClass ();
				m_audioTracks = new NeroAudioTrack[c_AudioFiles.Items.Count];

				int i = 0;
				foreach (ListViewItem lvi in c_AudioFiles.Items)
				{
					// For each list view item, we create a single NeroAudioTrack.
					// 
					NeroAudioTrack audioTrack = new NeroAudioTrackClass ();
					audioTrack.Filename = lvi.Text;
					
					if (!c_UseEvent.Checked)
					{
						// If events are not requested, use the built-in mechanism.
						// 
						string sLowerFilename = audioTrack.Filename.ToLower ();

						// WAV and WMA have their own types. All other supported types
						// belong together with MP3.
						// 
						if (sLowerFilename.EndsWith (".wav"))
						{
							audioTrack.TrackType = NERO_AUDIO_TRACK_TYPE.NERO_AUDIO_TRACK_FILE_WAV;
						}
						else if (sLowerFilename.EndsWith (".wma"))
						{
							audioTrack.TrackType = NERO_AUDIO_TRACK_TYPE.NERO_AUDIO_TRACK_FILE_WMA;
						}
						else
						{
							audioTrack.TrackType = NERO_AUDIO_TRACK_TYPE.NERO_AUDIO_TRACK_FILE_MP3;
						}
					}
					else
					{
						// Ok, so the user requested that we perform IO using events.
						// Let's get the file size so we can calculate the length in
						// blocks.
						// 
						FileStream fs = File.OpenRead (c_AudioFiles.Items[m_iAudioFile].Text);
						audioTrack.LengthInBlocks = (int) fs.Length/2352;
						fs = null;

						// If first track, specify 150 blocks (two seconds) pause.
						// 
						audioTrack.PauseInBlksBeforeThisTrack = i == 0? 150: 0;
						audioTrack.TrackType = NERO_AUDIO_TRACK_TYPE.NERO_AUDIO_TRACK_THROUGH_EVENT;

						// Subscribe to events.
						// 
						audioTrack.OnReadAudioBurn += new _INeroAudioTrackEvents_OnReadAudioBurnEventHandler(audioTrack_OnReadAudioBurn);
						audioTrack.OnEOF += new _INeroAudioTrackEvents_OnEOFEventHandler(audioTrack_OnEOF);
						audioTrack.OnError += new _INeroAudioTrackEvents_OnErrorEventHandler(audioTrack_OnError);
					}

					// Put the track into the array for safekeeping (so that the
					// events work properly) and add the track to the tracks
					// collection.
					// 
					m_audioTracks[i++] = audioTrack;
					audioTracks.Add (audioTrack);
				}
			}

			// Return the tracks collection.
			// 
			return audioTracks;
		}

		// This function is used to recursively add the path to the supplied
		// parent NeroFolder.
		// 
		private void AddFolderRecursively (ref NeroFolder folderParent, string sPath)
		{
			NeroFolder folder = new NeroFolderClass ();
			folderParent.Folders.Add (folder);

			string [] sSplits = sPath.Split (new char [] {'\\'}, sPath.Length);
			if (sSplits.GetLength (0) >= 2)
			{
				string sFolderName = sSplits[sSplits.GetLength (0) - 2];
				folder.Name = sFolderName;

				string [] sDirectories = Directory.GetDirectories (sPath);
				foreach (string sSubDirPath in sDirectories)
				{
					AddFolderRecursively (ref folder, sSubDirPath + "\\");
				}
			}

			string [] sFiles = Directory.GetFiles (sPath);
			foreach (string sFile in sFiles)
			{
				NeroFile file = new NeroFileClass ();
				file.SourceFilePath = sFile;
				file.Name = Path.GetFileName (sFile);
				file.EntryTime = Directory.GetLastWriteTime (sFile);

				folder.Files.Add (file);
			}
		}

		// This function adds the files and folders from the list
		// view to the supplied NeroISOTrack.
		// 
		private void AddFilesAndFoldersToISOTrack (ref NeroISOTrack isoTrack)
		{
			foreach (ListViewItem lvi in c_FilesAndFolders.Items)
			{
				string sPath = lvi.Text;

				// The string should really not be empty...
				// 
				if (sPath != "")
				{
					// If path ends in a backslash, it is a folder.
					// 
					if (sPath[sPath.Length - 1] == '\\')
					{
						NeroFolder folder = isoTrack.RootFolder;
						AddFolderRecursively (ref folder, sPath);
					}
					else
					{
						// This is a file. Create a new NeroFile
						// change its properties.
						// 
						NeroFile file = new NeroFileClass ();
						file.SourceFilePath = sPath;
						file.Name = Path.GetFileName (sPath);
						file.EntryTime = Directory.GetLastWriteTime (sPath);

						// In this implementation, specified files are added
						// to the root of the disc only.
						// 
						isoTrack.RootFolder.Files.Add (file);
					}
				}
			}
		}

		private void c_Burn_Click(object sender, System.EventArgs e)
		{
			// Ok, so the user wants to burn. Let's get the track number
			// to import, if any.
			// 
			NERO_IMPORT_ISO_TRACK_FLAGS importFlags = NERO_IMPORT_ISO_TRACK_FLAGS.NERO_IMPORT_ISO_ONLY;
			int iTrackNumber = m_frmChooseSession.GetTrackNumber (ref importFlags);

			if (iTrackNumber != -1)
			{
				// If there is a track number to import, let's import it
				// here and now. Disable the form so nothing can happen
				// while we are importing. It can be a lengthy process.
				// Subscribe to the done import event and finally start
				// importing.
				// 
				this.Enabled = false;
				m_evOnDoneImport2 = new _INeroDriveEvents_OnDoneImport2EventHandler(m_drive_OnDoneImport2);
				m_drive.OnDoneImport2 += m_evOnDoneImport2;
				m_drive.ImportIsoTrack (iTrackNumber - 1, importFlags);
			}
			else
			{
				// If nothing to import, go to burning straight ahead.
				// 
				Burn (null, null);
			}
		}

		private void Burn (NeroFolder importedFolder, NeroCDStamp cdStamp)
		{
			// Call the helper function to prepare the audio tracks for
			// us. Then create the ISO track.
			// 
			NeroAudioTracks audioTracks = GetAudioTracks ();
			NeroISOTrack isoTrack = new NeroISOTrackClass ();

			isoTrack.BurnOptions = (NERO_BURN_OPTIONS) ((uint) NERO_BURN_OPTIONS.NERO_BURN_OPTION_CREATE_ISO_FS + (uint) NERO_BURN_OPTIONS.NERO_BURN_OPTION_USE_JOLIET);
			isoTrack.Name = c_ISOVolumeName.Text;

			// If something was imported, make it the root folder
			// of the ISO track. We will add more items to it.
			// 
			if (importedFolder != null)
			{
				isoTrack.RootFolder = importedFolder;
			}

			// Add all the specified files and folders to the ISO
			// track.
			// 
			AddFilesAndFoldersToISOTrack (ref isoTrack);

			// Finally, create the burn progress form and call the
			// appropriate function.
			// 
			BurnProgressForm frm = new BurnProgressForm (m_drive, m_nero);

			frm.BurnIsoAudio (c_Artist.Text,
				c_Title.Text,
				isoTrack,
				audioTracks,
				cdStamp,
				m_frmChooseBurnFlags.GetBurnFlags (),
				m_frmChooseWriteSpeed.GetSpeed (),
				m_frmChooseMedia.GetMediaType (),
				this);
		}

		private void m_drive_OnDoneImport2(bool bOk, NeroFolder pFolder, NeroCDStamp pCDStamp, NeroImportDataTrackInfo pImportInfo, NERO_IMPORT_DATA_TRACK_RESULT importResult)
		{
			// When importing is finished, unsubscribe from the event
			// and reenable the form.
			// 
			m_drive.OnDoneImport2 -= m_evOnDoneImport2;
			this.Enabled = true;

			if (!bOk)
			{
				// On failure, show a more detailed description.
				// 
				MessageBox.Show (this, "The previous session was not imported successfully!\n" + importResult.ToString ());
			}
			else
			{
				// If import was successful, proceed with burning.
				// 
				Burn (pFolder, pCDStamp);
			}
		}

		private void c_ChangeBurnFlags_Click(object sender, System.EventArgs e)
		{
			if (DialogResult.OK == m_frmChooseBurnFlags.ShowDialog (this))
			{
				UpdateSettings ();
			}
		}
		
		private void UpdateSettings ()
		{
			c_TextSettings.Text = "Burn flags: " + m_frmChooseBurnFlags.ToString () + "\r\n\r\n"
				+ "Session to import: " + m_frmChooseSession.ToString () + "\r\n\r\n"
				+ "Write speed: " + m_frmChooseWriteSpeed.ToString () + "\r\n\r\n"
				+ "Media types: " + m_frmChooseMedia.ToString ();
		}

		private void c_ChooseSession_Click(object sender, System.EventArgs e)
		{
			if (DialogResult.OK == m_frmChooseSession.ShowDialog (this))
			{
				UpdateSettings ();
			}
		}

		private void c_WriteSpeed_Click(object sender, System.EventArgs e)
		{
			if (DialogResult.OK == m_frmChooseWriteSpeed.ShowDialog (this))
			{
				UpdateSettings ();
			}
		}

		private void c_ChooseMedia_Click(object sender, System.EventArgs e)
		{
			if (DialogResult.OK == m_frmChooseMedia.ShowDialog (this))
			{
				UpdateSettings ();
			}
		}

		private void c_EstimateTrackSize_Click(object sender, System.EventArgs e)
		{
			// If track size estimation is reqested, we should create
			// the ISO track, assign it all the requried elements
			// and invoke a form that will show some options for
			// further track size estimation refinement.
			// 
			NeroISOTrack isoTrack = new NeroISOTrackClass ();

			isoTrack.BurnOptions = (NERO_BURN_OPTIONS) ((uint) NERO_BURN_OPTIONS.NERO_BURN_OPTION_CREATE_ISO_FS + (uint) NERO_BURN_OPTIONS.NERO_BURN_OPTION_USE_JOLIET);
			isoTrack.Name = c_ISOVolumeName.Text;
			
			AddFilesAndFoldersToISOTrack (ref isoTrack);

			EstimateTrackSizeForm frm = new EstimateTrackSizeForm (m_drive, isoTrack, m_frmChooseMedia.GetMediaType (), m_frmChooseBurnFlags.GetBurnFlags ());
			frm.ShowDialog (this);
		}

		private void audioTrack_OnReadAudioBurn(ref int Length, ref object Data)
		{
			// This event is called during the burn process on a NeroAudioTrack
			// to supply the burning engine with audio data. The Data object
			// variable is a SAFEARRAY of VT_I2 which translates to a short[].
			// We need to fill it with audio data. We are required to return
			// 16-bit samples of interleaved stereo audio data. Data.Length
			// shows how many samples are we required to return. Just overwrite
			// the array each time. There is no need to reallocate a new array
			// of exact size. If less data needs to be returned, ref Length
			// should be set to the actual number of BYTES written. So, on input
			// Data.Length is the number of 16-bit samples and Length is twice
			// that (as it shows BYTES). On return, size or nature of Data array
			// is best not changed (except for contents). If less samples needs
			// to be returned, Length should reflect this (just make sure this
			// one is bytes, not shorts).
			// 
			if (m_fs == null)
			{
				// If no file stream create until now, this is the first time
				// we are called.
				// 
				try
				{
					// Try and create the file stream. Use m_iAudioFile as an
					// index of the current file we are working on.
					// 
					m_fs = File.OpenRead (c_AudioFiles.Items[m_iAudioFile].Text);

					// Reset error and eof flags.
					// 
					m_bError = false;
					m_bEof = false;
				}
				catch
				{
					// If file openning fails, set the error flag. This will
					// be reported first time OnError event is fired.
					// 
					m_bError = true;
				}
			}

			// Ok, we are supposed to have the file stream at this point,
			// but still guard against the case that we don't.
			// 
			if (m_fs != null)
			{
				// Check if the rest of file data is smaller than
				// the buffer supplied.
				// 
				if (m_fs.Length - m_fs.Position < Length)
				{
					// If so, set the ref Length variable to 
					// whatever is left of the file. Set the eof
					// flag and go to the next file, if any.
					// 
					Length = (int) (m_fs.Length - m_fs.Position);
					m_bEof = true;
					m_iAudioFile ++;
				}

				// Allocate the byte array of the requested length.
				// 
				byte[] bytedata = new byte[Length];

				try
				{
					// Try to read the amount of data requested.
					// 
					m_fs.Read (bytedata, 0, Length);

					// Ok, now cast the Data input parameter to an
					// array of shorts. There are Length/2 of shorts.
					// 
					short[] samples = (short[]) Data;

					// Convert the byte array into a short array. Assume
					// the byte array really contains shorts in LSB (Intel)
					// order.
					// 
					for (int i = 0; i < Length/2; i ++)
					{
						samples[i] = (short) ((bytedata[2*i+1]*256U) + bytedata[2*i]);
					}

					// Finally, if position is past end of the file, get rid
					// of it, so that next time we are called we attempt to
					// open the next one.
					// 
					if (m_fs.Length <= m_fs.Position)
					{
						m_fs = null;
					}
				}
				catch
				{
					m_bError = true;
				}
			}

			if (m_bError)
			{
				Length = 0;
			}
		}

		private void audioTrack_OnEOF(ref bool Eof)
		{
			// Just return whatever is the current state of
			// end-of-file flag.
			// 
			Eof = m_bEof;
		}

		private void audioTrack_OnError(ref bool Error)
		{
			// Just return whatever is the current state of
			// error flag.
			// 
			Error = m_bError;
		}
	}
}