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