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