win/C#/frmPreview.cs

   1 /*  frmPreview.cs $\r
   2     This file is part of the HandBrake source code.\r
   3     Homepage: <http://handbrake.fr/>.\r
   4     It may be used under the terms of the GNU General Public License. */\r
   5 \r
   6 namespace Handbrake\r
   7 {\r
   8     using System;\r
   9     using System.Diagnostics;\r
  10     using System.IO;\r
  11     using System.Runtime.InteropServices;\r
  12     using System.Threading;\r
  13     using System.Windows;\r
  14     using System.Windows.Forms;\r
  15     using Functions;\r
  16 \r
  17     using HandBrake.ApplicationServices.Services;\r
  18     using HandBrake.ApplicationServices.Services.Interfaces;\r
  19 \r
  20     using QTOControlLib;\r
  21     using QTOLibrary;\r
  22 \r
  23     using MessageBox = System.Windows.Forms.MessageBox;\r
  24 \r
  25     /// <summary>\r
  26     /// The Preview Window\r
  27     /// </summary>\r
  28     public partial class frmPreview : Form\r
  29     {\r
  30         #region Private Variables\r
  31 \r
  32         /// <summary>\r
  33         /// The Main Window\r
  34         /// </summary>\r
  35         private readonly frmMain mainWindow;\r
  36 \r
  37         /// <summary>\r
  38         /// True if QT is not installed\r
  39         /// </summary>\r
  40         private readonly bool noQt;\r
  41 \r
  42         /// <summary>\r
  43         /// The encode queue\r
  44         /// </summary>\r
  45         private readonly IQueue encodeQueue = new Queue();\r
  46 \r
  47         /// <summary>\r
  48         /// What is currently playing\r
  49         /// </summary>\r
  50         private string currentlyPlaying = string.Empty;\r
  51 \r
  52         /// <summary>\r
  53         /// Play With VLC tracker\r
  54         /// </summary>\r
  55         private bool playWithVlc;\r
  56 \r
  57         /// <summary>\r
  58         /// A Thread for the video player\r
  59         /// </summary>\r
  60         private Thread player;\r
  61 \r
  62         #endregion\r
  63 \r
  64         /// <summary>\r
  65         /// Initializes a new instance of the <see cref="frmPreview"/> class.\r
  66         /// </summary>\r
  67         /// <param name="mw">\r
  68         /// The mw.\r
  69         /// </param>\r
  70         public frmPreview(frmMain mw)\r
  71         {\r
  72             try\r
  73             {\r
  74                 InitializeComponent();\r
  75             }\r
  76             catch (Exception)\r
  77             {\r
  78                 this.noQt = true;\r
  79 \r
  80                 int borderWidth = (this.Width - this.ClientSize.Width) / 2;\r
  81                 int titlebarAndBorder = this.Height - this.ClientSize.Height;\r
  82 \r
  83                 this.Height = toolBar.Height + titlebarAndBorder + 1;\r
  84                 btn_playQT.Enabled = false;\r
  85                 btn_playQT.Visible = false;\r
  86             }\r
  87 \r
  88             this.mainWindow = mw;\r
  89 \r
  90             cb_preview.SelectedIndex = 0;\r
  91             cb_duration.SelectedIndex = 1;\r
  92 \r
  93             cb_preview.Items.Clear();\r
  94             for (int i = 1; i <= Properties.Settings.Default.previewScanCount; i++)\r
  95             {\r
  96                 cb_preview.Items.Add(i.ToString());\r
  97             }\r
  98 \r
  99             cb_preview.SelectedIndex = 0;\r
 100 \r
 101             encodeQueue.EncodeStarted += this.EncodeQueueEncodeStarted;\r
 102             encodeQueue.EncodeEnded += this.EncodeQueueEncodeEnded;\r
 103         }\r
 104 \r
 105         #region Delegates\r
 106         /// <summary>\r
 107         /// Update UI Delegate\r
 108         /// </summary>\r
 109         /// <param name="sender">\r
 110         /// The sender.\r
 111         /// </param>\r
 112         /// <param name="e">\r
 113         /// The e.\r
 114         /// </param>\r
 115         private delegate void UpdateUiHandler(object sender, EventArgs e);\r
 116 \r
 117         /// <summary>\r
 118         /// The Open Movie Handler\r
 119         /// </summary>\r
 120         private delegate void OpenMovieHandler();\r
 121         #endregion\r
 122 \r
 123         #region Event Handlers\r
 124         /// <summary>\r
 125         /// The encode has started\r
 126         /// </summary>\r
 127         /// <param name="sender">\r
 128         /// The sender.\r
 129         /// </param>\r
 130         /// <param name="e">\r
 131         /// The e.\r
 132         /// </param>\r
 133         private void EncodeQueueEncodeStarted(object sender, EventArgs e)\r
 134         {\r
 135             encodeQueue.EncodeStatusChanged += this.EncodeQueueEncodeStatusChanged;\r
 136         }\r
 137 \r
 138         /// <summary>\r
 139         /// The Enocde has ended\r
 140         /// </summary>\r
 141         /// <param name="sender">\r
 142         /// The sender.\r
 143         /// </param>\r
 144         /// <param name="e">\r
 145         /// The e.\r
 146         /// </param>\r
 147         private void EncodeQueueEncodeEnded(object sender, EventArgs e)\r
 148         {\r
 149             encodeQueue.EncodeStatusChanged -= this.EncodeQueueEncodeStatusChanged;\r
 150 \r
 151             try\r
 152             {\r
 153                 if (this.InvokeRequired)\r
 154                 {\r
 155                     this.BeginInvoke(new UpdateUiHandler(EncodeQueueEncodeEnded), new[] { sender, e });\r
 156                     return;\r
 157                 }\r
 158 \r
 159                 ProgressBarStatus.Visible = false;\r
 160                 lbl_encodeStatus.Visible = false;\r
 161 \r
 162                 if (!this.noQt)\r
 163                     btn_playQT.Enabled = true;\r
 164                 btn_playVLC.Enabled = true;\r
 165 \r
 166                 this.Text = this.Text.Replace(" (Encoding)", string.Empty);\r
 167 \r
 168                 // Get the sample filename\r
 169                 if (this.mainWindow.text_destination.Text != string.Empty)\r
 170                     this.currentlyPlaying =\r
 171                         this.mainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").\r
 172                             Replace(".mkv", "_sample.mkv");\r
 173 \r
 174                 // Play back in QT or VLC\r
 175                 if (!playWithVlc)\r
 176                     Play();\r
 177                 else\r
 178                     PlayVlc();\r
 179             }\r
 180             catch (Exception exc)\r
 181             {\r
 182                 Main.ShowExceptiowWindow("An Unexpected error has occured", exc.ToString());\r
 183             }\r
 184         }\r
 185 \r
 186         /// <summary>\r
 187         /// Encode status has changed\r
 188         /// </summary>\r
 189         /// <param name="sender">\r
 190         /// The sender.\r
 191         /// </param>\r
 192         /// <param name="e">\r
 193         /// The e.\r
 194         /// </param>\r
 195         private void EncodeQueueEncodeStatusChanged(object sender, HandBrake.ApplicationServices.EncodeProgressEventArgs e)\r
 196         {\r
 197             if (this.InvokeRequired)\r
 198             {\r
 199                 this.BeginInvoke(new Encode.EncodeProgessStatus(this.EncodeQueueEncodeStatusChanged), new[] { sender, e });\r
 200                 return;\r
 201             }\r
 202 \r
 203             lbl_encodeStatus.Text = e.PercentComplete + "%";\r
 204             ProgressBarStatus.Value = (int)Math.Round(e.PercentComplete);\r
 205         }\r
 206         #endregion\r
 207 \r
 208         #region Encode Sample\r
 209 \r
 210         /// <summary>\r
 211         /// Play with VLC\r
 212         /// </summary>\r
 213         /// <param name="sender">\r
 214         /// The sender.\r
 215         /// </param>\r
 216         /// <param name="e">\r
 217         /// The e.\r
 218         /// </param>\r
 219         private void PlayVlcClick(object sender, EventArgs e)\r
 220         {\r
 221             ProgressBarStatus.Visible = true;\r
 222             ProgressBarStatus.Value = 0;\r
 223             lbl_encodeStatus.Visible = true;\r
 224             playWithVlc = true;\r
 225             this.panel1.Visible = false;\r
 226             \r
 227             try\r
 228             {\r
 229                 if (!this.noQt)\r
 230                     QTControl.URL = string.Empty;\r
 231 \r
 232                 if (File.Exists(this.currentlyPlaying))\r
 233                     File.Delete(this.currentlyPlaying);\r
 234             }\r
 235             catch (Exception)\r
 236             {\r
 237                 MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.",\r
 238                                 "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 239             }\r
 240 \r
 241             btn_playQT.Enabled = false;\r
 242             btn_playVLC.Enabled = false;\r
 243             this.Text += " (Encoding)";\r
 244             int duration;\r
 245             int.TryParse(cb_duration.Text, out duration);\r
 246             string query = QueryGenerator.GeneratePreviewQuery(this.mainWindow, duration, cb_preview.Text);\r
 247             ThreadPool.QueueUserWorkItem(this.CreatePreview, query);\r
 248         }\r
 249 \r
 250         /// <summary>\r
 251         /// Encode and Play with QT\r
 252         /// </summary>\r
 253         /// <param name="sender">\r
 254         /// The sender.\r
 255         /// </param>\r
 256         /// <param name="e">\r
 257         /// The e.\r
 258         /// </param>\r
 259         private void PlayQtClick(object sender, EventArgs e)\r
 260         {\r
 261             playWithVlc = false;\r
 262             this.panel1.Visible = true;\r
 263             if (this.noQt)\r
 264             {\r
 265                 MessageBox.Show(this,\r
 266                                 "It would appear QuickTime 7 is not installed or not accessible. Please (re)install QuickTime.",\r
 267                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 268                 return;\r
 269             }\r
 270             if (this.mainWindow.text_destination.Text.Contains(".mkv"))\r
 271             {\r
 272                 MessageBox.Show(this,\r
 273                                 "The QuickTime Control does not support MKV files, It is recommended you use the VLC option instead.",\r
 274                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 275             }\r
 276             else\r
 277             {\r
 278                 ProgressBarStatus.Visible = true;\r
 279                 ProgressBarStatus.Value = 0;\r
 280                 lbl_encodeStatus.Visible = true;\r
 281                 try\r
 282                 {\r
 283                     QTControl.URL = string.Empty;\r
 284                     if (File.Exists(this.currentlyPlaying))\r
 285                         File.Delete(this.currentlyPlaying);\r
 286                 }\r
 287                 catch (Exception)\r
 288                 {\r
 289                     MessageBox.Show(this,\r
 290                                     "Unable to delete previous preview file. You may need to restart the application.",\r
 291                                     "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 292                 }\r
 293 \r
 294                 btn_playQT.Enabled = false;\r
 295                 btn_playVLC.Enabled = false;\r
 296                 this.Text += " (Encoding)";\r
 297                 int duration;\r
 298                 int.TryParse(cb_duration.Text, out duration);\r
 299                 string query = QueryGenerator.GeneratePreviewQuery(this.mainWindow, duration, cb_preview.Text);\r
 300 \r
 301                 ThreadPool.QueueUserWorkItem(this.CreatePreview, query);\r
 302             }\r
 303         }\r
 304 \r
 305         /// <summary>\r
 306         /// Create the Preview.\r
 307         /// </summary>\r
 308         /// <param name="state">\r
 309         /// The state.\r
 310         /// </param>\r
 311         private void CreatePreview(object state)\r
 312         {\r
 313             // Make sure we are not already encoding and if we are then display an error.\r
 314             if (encodeQueue.IsEncoding)\r
 315             {\r
 316                 MessageBox.Show(\r
 317                     this,\r
 318                     "Handbrake is already encoding a video!",\r
 319                     "Warning",\r
 320                     MessageBoxButtons.OK,\r
 321                     MessageBoxIcon.Warning);\r
 322 \r
 323                 return;\r
 324             }\r
 325 \r
 326             encodeQueue.CreatePreviewSample((string)state);\r
 327         }\r
 328 \r
 329         #endregion\r
 330 \r
 331         #region Playback\r
 332 \r
 333         /// <summary>\r
 334         /// Play the video back in the QuickTime control\r
 335         /// </summary>\r
 336         private void Play()\r
 337         {\r
 338             this.player = new Thread(OpenMovie) { IsBackground = true };\r
 339             this.player.Start();\r
 340         }\r
 341 \r
 342         /// <summary>\r
 343         /// Play the video back in an external VLC Player\r
 344         /// </summary>\r
 345         private void PlayVlc()\r
 346         {\r
 347             // Launch VLC and Play video.\r
 348             if (this.currentlyPlaying != string.Empty)\r
 349             {\r
 350                 if (File.Exists(this.currentlyPlaying))\r
 351                 {\r
 352                     // Attempt to find VLC if it doesn't exist in the default set location.\r
 353                     string vlcPath;\r
 354 \r
 355                     if (8 == IntPtr.Size ||\r
 356                         (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))\r
 357                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles(x86)");\r
 358                     else\r
 359                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles");\r
 360 \r
 361                     vlcPath = vlcPath != null\r
 362                                   ? vlcPath + @"\VideoLAN\VLC\vlc.exe"\r
 363                                   : @"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe";\r
 364 \r
 365                     if (!File.Exists(Properties.Settings.Default.VLC_Path))\r
 366                     {\r
 367                         if (File.Exists(vlcPath))\r
 368                         {\r
 369                             Properties.Settings.Default.VLC_Path = "C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe";\r
 370                             Properties.Settings.Default.Save(); // Save this new path if it does\r
 371                         }\r
 372                         else\r
 373                         {\r
 374                             MessageBox.Show(this,\r
 375                                             "Unable to detect VLC Player. \nPlease make sure VLC is installed and the directory specified in HandBrake's options is correct. (See: \"Tools Menu > Options > Picture Tab\") ",\r
 376                                             "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 377                         }\r
 378                     }\r
 379 \r
 380                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 381                     {\r
 382                         string args = "\"" + this.currentlyPlaying + "\"";\r
 383                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 384                         Process.Start(vlc);\r
 385                     }\r
 386                 }\r
 387                 else\r
 388                     MessageBox.Show(this,\r
 389                                     "Unable to find the preview file. Either the file was deleted or the encode failed. Check the activity log for details.",\r
 390                                     "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 391             }\r
 392         }\r
 393 \r
 394         /// <summary>\r
 395         /// QT control - Open the file\r
 396         /// </summary>\r
 397         [STAThread]\r
 398         private void OpenMovie()\r
 399         {\r
 400             try\r
 401             {\r
 402                 if (InvokeRequired)\r
 403                 {\r
 404                     BeginInvoke(new OpenMovieHandler(OpenMovie));\r
 405                     return;\r
 406                 }\r
 407                 QTControl.URL = this.currentlyPlaying;\r
 408                 QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);\r
 409                 QTControl.URL = this.currentlyPlaying;\r
 410                 QTControl.Show();\r
 411 \r
 412                 this.ClientSize = QTControl.Size;\r
 413                 this.Height += toolBar.Height;\r
 414             }\r
 415             catch (COMException ex)\r
 416             {\r
 417                 QTUtils qtu = new QTUtils();\r
 418                 Main.ShowExceptiowWindow("Unable to open movie.", ex + Environment.NewLine + qtu.QTErrorFromErrorCode(ex.ErrorCode));\r
 419             }\r
 420             catch (Exception ex)\r
 421             {\r
 422                 Main.ShowExceptiowWindow("Unable to open movie.", ex.ToString());\r
 423             }\r
 424         }\r
 425 \r
 426         #endregion\r
 427 \r
 428         /// <summary>\r
 429         /// Remove any subscribed events then close.\r
 430         /// </summary>\r
 431         /// <param name="e">\r
 432         /// The e.\r
 433         /// </param>\r
 434         protected override void OnClosing(System.ComponentModel.CancelEventArgs e)\r
 435         {\r
 436             encodeQueue.EncodeStarted -= this.EncodeQueueEncodeStarted;\r
 437             encodeQueue.EncodeEnded -= this.EncodeQueueEncodeEnded;\r
 438             base.OnClosing(e);\r
 439         }\r
 440     }\r
 441 }