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