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 QTOLibrary;\r
   8 \r
   9 namespace Handbrake\r
  10 {\r
  11     public partial class frmPreview : Form\r
  12     {\r
  13 \r
  14         QueryGenerator hb_common_func = new QueryGenerator();\r
  15         Functions.Encode process = new Functions.Encode();\r
  16         private delegate void UpdateUIHandler();\r
  17         String currently_playing = "";\r
  18         readonly frmMain mainWindow;\r
  19         private Process hbProc;\r
  20         private Thread player;\r
  21         private 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 exc)\r
  30             {\r
  31                 MessageBox.Show(mw, "It would appear QuickTime 7 is not installed. QuickTime preview functionality will be disabled! \n\n Debug Info:\n" + exc, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  32                 btn_playQT.Enabled = false;\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             btn_playQT.Enabled = false;\r
  44             btn_playVLC.Enabled = false;\r
  45             lbl_status.Text = "Encoding Sample for (VLC) ...";\r
  46             String query = hb_common_func.GeneratePreviewQuery(mainWindow, cb_duration.Text, cb_preview.Text);\r
  47             ThreadPool.QueueUserWorkItem(procMonitor, query);  \r
  48         }\r
  49         private void btn_playQT_Click(object sender, EventArgs e)\r
  50         {\r
  51             btn_playQT.Enabled = false;\r
  52             btn_playVLC.Enabled = false;\r
  53             lbl_status.Text = "Encoding Sample for (QT) ...";\r
  54             String query = hb_common_func.GeneratePreviewQuery(mainWindow, cb_duration.Text, cb_preview.Text);\r
  55             ThreadPool.QueueUserWorkItem(procMonitor, query);\r
  56         }\r
  57         private void procMonitor(object state)\r
  58         {\r
  59             // Make sure we are not already encoding and if we are then display an error.\r
  60             if (hbProc != null)\r
  61                 MessageBox.Show(this, "Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  62             else\r
  63             {\r
  64                 hbProc = process.runCli(this, (string)state);\r
  65                 hbProc.WaitForExit();\r
  66                 hbProc = null;\r
  67                 encodeCompleted();\r
  68             }\r
  69         }\r
  70         private void encodeCompleted()\r
  71         {\r
  72             try\r
  73             {\r
  74                 if (InvokeRequired)\r
  75                 {\r
  76                     BeginInvoke(new UpdateUIHandler(encodeCompleted));\r
  77                     return;\r
  78                 }\r
  79                 if (!noQT)\r
  80                     btn_playQT.Enabled = true;\r
  81                 btn_playVLC.Enabled = true;\r
  82 \r
  83                 // Decide which player to use.\r
  84                 String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";\r
  85 \r
  86                 lbl_status.Text = "Loading Clip ...";\r
  87 \r
  88                 // Get the sample filename\r
  89                 if (mainWindow.text_destination.Text != "")\r
  90                     currently_playing = mainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").Replace(".avi", "_sample.avi").Replace(".ogm", "_sample.ogm");\r
  91 \r
  92                 // Play back in QT or VLC\r
  93                 if (playerSelection == "QT")\r
  94                     play();\r
  95                 else \r
  96                     playVLC();\r
  97                 \r
  98                 lbl_status.Text = "";\r
  99             }\r
 100             catch (Exception exc)\r
 101             {\r
 102                 MessageBox.Show(this, "frmPreview.cs encodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 103             }\r
 104         }\r
 105         #endregion\r
 106 \r
 107         #region Playback\r
 108 \r
 109         /// <summary>\r
 110         /// Play the video back in the QuickTime control\r
 111         /// </summary>\r
 112         private void play()\r
 113         {\r
 114             player = new Thread(OpenMovie) { IsBackground = true };\r
 115             player.Start();\r
 116         }\r
 117 \r
 118         /// <summary>\r
 119         /// Play the video back in an external VLC player\r
 120         /// </summary>\r
 121         private void playVLC()\r
 122         {\r
 123             // Launch VLC and play video.\r
 124             if (currently_playing != "")\r
 125             {\r
 126                 if (File.Exists(currently_playing))\r
 127                 {\r
 128                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 129                     {\r
 130                         String args = "\"" + currently_playing + "\"";\r
 131                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 132                         Process.Start(vlc);\r
 133                         lbl_status.Text = "VLC will now launch.";\r
 134                     }\r
 135                     else\r
 136                         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
 137                 }\r
 138                 else\r
 139                     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
 140             }\r
 141         }\r
 142 \r
 143         /// <summary>\r
 144         /// QT control - Open the file\r
 145         /// </summary>\r
 146         [STAThread]\r
 147         private void OpenMovie()\r
 148         {\r
 149             try\r
 150             {\r
 151                 if (InvokeRequired)\r
 152                 {\r
 153                     BeginInvoke(new UpdateUIHandler(OpenMovie));\r
 154                     return;\r
 155                 }\r
 156                 QTControl.URL = currently_playing;\r
 157                 QTControl.Width = QTControl.Movie.Width;\r
 158                 QTControl.Height = QTControl.Movie.Height;\r
 159                 // The initial control size is 64,64. If we do not reload the clip here\r
 160                 // it'll scale the video from 64,64. \r
 161                 // Unsure why as it correctly resizes the control to the movies actual size.\r
 162                 QTControl.URL = currently_playing;\r
 163                 QTControl.SetScale(0);\r
 164                 QTControl.Show();\r
 165 \r
 166                 this.Width = QTControl.Width + 5;\r
 167                 this.Height = QTControl.Height + 90;\r
 168             }\r
 169             catch (COMException ex)\r
 170             {\r
 171                 QTUtils qtu = new QTUtils();\r
 172                 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
 173             }\r
 174             catch (Exception ex)\r
 175             {\r
 176                 MessageBox.Show(this, "Unable to open movie:\n\n" + ex, "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 177             }\r
 178         }\r
 179         #endregion\r
 180     }\r
 181 }\r