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