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