win/C#/frmPreview.cs

   1 using System;\r
   2 using System.Windows.Forms;\r
   3 using System.Threading;\r
   4 using System.Diagnostics;\r
   5 using System.Runtime.InteropServices;\r
   6 using System.IO;\r
   7 using Handbrake.EncodeQueue;\r
   8 using Handbrake.Functions;\r
   9 using QTOControlLib;\r
  10 using QTOLibrary;\r
  11 \r
  12 namespace Handbrake\r
  13 {\r
  14     public partial class frmPreview : Form\r
  15     {\r
  16         readonly Queue Process = new Queue();\r
  17         private delegate void UpdateUIHandler();\r
  18         String CurrentlyPlaying = "";\r
  19         readonly frmMain MainWindow;\r
  20         private Thread Player;\r
  21         private readonly Boolean NoQT;\r
  22 \r
  23         public frmPreview(frmMain mw)\r
  24         {\r
  25             try\r
  26             {\r
  27                 InitializeComponent();\r
  28             }\r
  29             catch (Exception)\r
  30             {\r
  31                 NoQT = true;\r
  32             }\r
  33             this.MainWindow = mw;\r
  34             cb_preview.SelectedIndex = 0;\r
  35             cb_duration.SelectedIndex = 1;\r
  36 \r
  37             cb_preview.Items.Clear();\r
  38             for (int i = 1; i <= Properties.Settings.Default.previewScanCount; i++)\r
  39                 cb_preview.Items.Add(i.ToString());\r
  40             cb_preview.SelectedIndex = 0;\r
  41         }\r
  42 \r
  43         #region Encode Sample\r
  44         private void btn_playVLC_Click(object sender, EventArgs e)\r
  45         {\r
  46             lbl_status.Visible = true;\r
  47             try\r
  48             {\r
  49                 if (!NoQT)\r
  50                     QTControl.URL = "";\r
  51 \r
  52                 if (File.Exists(CurrentlyPlaying))\r
  53                     File.Delete(CurrentlyPlaying);\r
  54             }\r
  55             catch (Exception)\r
  56             {\r
  57                 MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  58             }\r
  59 \r
  60             btn_playQT.Enabled = false;\r
  61             btn_playVLC.Enabled = false;\r
  62             lbl_status.Text = "Encoding Sample for (VLC) ...";\r
  63             int duration;\r
  64             int.TryParse(cb_duration.Text, out duration);\r
  65             String query = QueryGenerator.GenerateCLIQuery(MainWindow, 3, duration, cb_preview.Text);\r
  66             ThreadPool.QueueUserWorkItem(ProcMonitor, query);\r
  67         }\r
  68         private void btn_playQT_Click(object sender, EventArgs e)\r
  69         {\r
  70             if (NoQT)\r
  71             {\r
  72                 MessageBox.Show(this, "It would appear QuickTime 7 is not installed or not accessible. Please (re)install QuickTime.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  73                 return;\r
  74             }\r
  75             if (MainWindow.text_destination.Text.Contains(".mkv"))\r
  76             {\r
  77                 MessageBox.Show(this,\r
  78                                 "The QuickTime Control does not support MKV files, It is recommended you use VLC option instead.",\r
  79                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  80             }\r
  81             else\r
  82             {\r
  83                 lbl_status.Visible = true;\r
  84                 try\r
  85                 {\r
  86                     QTControl.URL = "";\r
  87                     if (File.Exists(CurrentlyPlaying))\r
  88                         File.Delete(CurrentlyPlaying);\r
  89                 }\r
  90                 catch (Exception)\r
  91                 {\r
  92                     MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  93                 }\r
  94 \r
  95                 btn_playQT.Enabled = false;\r
  96                 btn_playVLC.Enabled = false;\r
  97                 lbl_status.Text = "Encoding Sample for (QT) ...";\r
  98                 int duration;\r
  99                 int.TryParse(cb_duration.Text, out duration);\r
 100                 String query = QueryGenerator.GenerateCLIQuery(MainWindow, 3, duration, cb_preview.Text);\r
 101 \r
 102                 ThreadPool.QueueUserWorkItem(ProcMonitor, query);\r
 103             }\r
 104         }\r
 105         private void ProcMonitor(object state)\r
 106         {\r
 107             // Make sure we are not already encoding and if we are then display an error.\r
 108             if (Process.HbProcess != null)\r
 109                 MessageBox.Show(this, "Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 110             else\r
 111             {\r
 112                 Process.CreatePreviewSample((string)state);\r
 113                 if (Process.HbProcess != null)\r
 114                 {\r
 115                     Process.HbProcess.WaitForExit();\r
 116                     Process.HbProcess = null;\r
 117                 }\r
 118                 EncodeCompleted();\r
 119             }\r
 120         }\r
 121         private void EncodeCompleted()\r
 122         {\r
 123             try\r
 124             {\r
 125                 if (InvokeRequired)\r
 126                 {\r
 127                     BeginInvoke(new UpdateUIHandler(EncodeCompleted));\r
 128                     return;\r
 129                 }\r
 130                 if (!NoQT)\r
 131                     btn_playQT.Enabled = true;\r
 132                 btn_playVLC.Enabled = true;\r
 133 \r
 134                 // Decide which Player to use.\r
 135                 String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";\r
 136 \r
 137                 lbl_status.Text = "Loading Clip ...";\r
 138 \r
 139                 // Get the sample filename\r
 140                 if (MainWindow.text_destination.Text != "")\r
 141                     CurrentlyPlaying = MainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").Replace(".mkv", "_sample.mkv"); ;\r
 142 \r
 143                 // Play back in QT or VLC\r
 144                 if (playerSelection == "QT")\r
 145                     Play();\r
 146                 else\r
 147                     PlayVLC();\r
 148 \r
 149                 lbl_status.Text = "";\r
 150             }\r
 151             catch (Exception exc)\r
 152             {\r
 153                 MessageBox.Show(this, "frmPreview.cs EncodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 154             }\r
 155         }\r
 156         #endregion\r
 157 \r
 158         #region Playback\r
 159 \r
 160         /// <summary>\r
 161         /// Play the video back in the QuickTime control\r
 162         /// </summary>\r
 163         private void Play()\r
 164         {\r
 165             Player = new Thread(OpenMovie) { IsBackground = true };\r
 166             Player.Start();\r
 167             lbl_status.Visible = false;\r
 168         }\r
 169 \r
 170         /// <summary>\r
 171         /// Play the video back in an external VLC Player\r
 172         /// </summary>\r
 173         private void PlayVLC()\r
 174         {\r
 175             // Launch VLC and Play video.\r
 176             if (CurrentlyPlaying != "")\r
 177             {\r
 178                 if (File.Exists(CurrentlyPlaying))\r
 179                 {\r
 180                     // Attempt to find VLC if it doesn't exist in the default set location.\r
 181                     string vlcPath;\r
 182                     \r
 183                     if (8 == IntPtr.Size || (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))\r
 184                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles(x86)");\r
 185                     else\r
 186                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles");\r
 187       \r
 188                     vlcPath = vlcPath != null ? vlcPath + @"\VideoLAN\VLC\vlc.exe" : @"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe";\r
 189                     \r
 190                     if (!File.Exists(Properties.Settings.Default.VLC_Path))\r
 191                     {\r
 192                         if (File.Exists(vlcPath))\r
 193                         {\r
 194                             Properties.Settings.Default.VLC_Path = "C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe";\r
 195                             Properties.Settings.Default.Save(); // Save this new path if it does\r
 196                         }\r
 197                         else\r
 198                         {\r
 199                             MessageBox.Show(this,\r
 200                                             "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
 201                                             "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 202                         }\r
 203                     }\r
 204 \r
 205                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 206                     {\r
 207                         String args = "\"" + CurrentlyPlaying + "\"";\r
 208                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 209                         System.Diagnostics.Process.Start(vlc);\r
 210                         lbl_status.Text = "VLC will now launch.";\r
 211                     }\r
 212 \r
 213                 }\r
 214                 else\r
 215                     MessageBox.Show(this, "Unable to find the preview file. Either the file was deleted or the encode failed. Check the activity log for details.", "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 216             }\r
 217             lbl_status.Visible = false;\r
 218         }\r
 219 \r
 220         /// <summary>\r
 221         /// QT control - Open the file\r
 222         /// </summary>\r
 223         [STAThread]\r
 224         private void OpenMovie()\r
 225         {\r
 226             try\r
 227             {\r
 228                 if (InvokeRequired)\r
 229                 {\r
 230                     BeginInvoke(new UpdateUIHandler(OpenMovie));\r
 231                     return;\r
 232                 }\r
 233                 QTControl.URL = CurrentlyPlaying;\r
 234                 QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);\r
 235                 QTControl.URL = CurrentlyPlaying;\r
 236                 QTControl.Show();\r
 237 \r
 238                 this.ClientSize = QTControl.Size;\r
 239                 this.Height += 25;\r
 240             }\r
 241             catch (COMException ex)\r
 242             {\r
 243                 QTUtils qtu = new QTUtils();\r
 244                 MessageBox.Show(this, "Unable to open movie:\n\nError Code: " + ex.ErrorCode.ToString("X") + "\nQT Error code : " + qtu.QTErrorFromErrorCode(ex.ErrorCode), "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 245             }\r
 246             catch (Exception ex)\r
 247             {\r
 248                 MessageBox.Show(this, "Unable to open movie:\n\n" + ex, "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 249             }\r
 250         }\r
 251         #endregion\r
 252     }\r
 253 }\r