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