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