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 QTOControlLib;\r
   9 using QTOLibrary;\r
  10 \r
  11 namespace Handbrake\r
  12 {\r
  13     public partial class frmPreview : Form\r
  14     {\r
  15 \r
  16         QueryGenerator hb_common_func = new QueryGenerator();\r
  17         Functions.Encode process = new Functions.Encode();\r
  18         private delegate void UpdateUIHandler();\r
  19         String currently_playing = "";\r
  20         readonly frmMain mainWindow;\r
  21         private Process hbProc;\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. 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 (hbProc != null)\r
  87                 MessageBox.Show(this, "Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  88             else\r
  89             {\r
  90                 hbProc = process.runCli(this, (string)state);\r
  91                 hbProc.WaitForExit();\r
  92                 hbProc = null;\r
  93                 encodeCompleted();\r
  94             }\r
  95         }\r
  96         private void encodeCompleted()\r
  97         {\r
  98             try\r
  99             {\r
 100                 if (InvokeRequired)\r
 101                 {\r
 102                     BeginInvoke(new UpdateUIHandler(encodeCompleted));\r
 103                     return;\r
 104                 }\r
 105                 if (!noQT)\r
 106                     btn_playQT.Enabled = true;\r
 107                 btn_playVLC.Enabled = true;\r
 108 \r
 109                 // Decide which player to use.\r
 110                 String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";\r
 111 \r
 112                 lbl_status.Text = "Loading Clip ...";\r
 113 \r
 114                 // Get the sample filename\r
 115                 if (mainWindow.text_destination.Text != "")\r
 116                     currently_playing = mainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v");\r
 117 \r
 118                 // Play back in QT or VLC\r
 119                 if (playerSelection == "QT")\r
 120                     play();\r
 121                 else\r
 122                     playVLC();\r
 123 \r
 124                 lbl_status.Text = "";\r
 125             }\r
 126             catch (Exception exc)\r
 127             {\r
 128                 MessageBox.Show(this, "frmPreview.cs encodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 129             }\r
 130         }\r
 131         #endregion\r
 132 \r
 133         #region Playback\r
 134 \r
 135         /// <summary>\r
 136         /// Play the video back in the QuickTime control\r
 137         /// </summary>\r
 138         private void play()\r
 139         {\r
 140             player = new Thread(OpenMovie) { IsBackground = true };\r
 141             player.Start();\r
 142             lbl_status.Visible = false;\r
 143         }\r
 144 \r
 145         /// <summary>\r
 146         /// Play the video back in an external VLC player\r
 147         /// </summary>\r
 148         private void playVLC()\r
 149         {\r
 150             // Launch VLC and play video.\r
 151             if (currently_playing != "")\r
 152             {\r
 153                 if (File.Exists(currently_playing))\r
 154                 {\r
 155                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 156                     {\r
 157                         String args = "\"" + currently_playing + "\"";\r
 158                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 159                         Process.Start(vlc);\r
 160                         lbl_status.Text = "VLC will now launch.";\r
 161                     }\r
 162                     else\r
 163                         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
 164                 }\r
 165                 else\r
 166                     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
 167             }\r
 168             lbl_status.Visible = false;\r
 169         }\r
 170 \r
 171         /// <summary>\r
 172         /// QT control - Open the file\r
 173         /// </summary>\r
 174         [STAThread]\r
 175         private void OpenMovie()\r
 176         {\r
 177             try\r
 178             {\r
 179                 if (InvokeRequired)\r
 180                 {\r
 181                     BeginInvoke(new UpdateUIHandler(OpenMovie));\r
 182                     return;\r
 183                 }\r
 184                 QTControl.Sizing = QTSizingModeEnum.qtControlFitsMovie;\r
 185                 QTControl.URL = currently_playing;\r
 186                 QTControl.Sizing = QTSizingModeEnum.qtMovieFitsControl;\r
 187                 QTControl.Show();\r
 188 \r
 189                 this.ClientSize = QTControl.Size;\r
 190                 this.Height += 25;\r
 191             }\r
 192             catch (COMException ex)\r
 193             {\r
 194                 QTUtils qtu = new QTUtils();\r
 195                 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
 196             }\r
 197             catch (Exception ex)\r
 198             {\r
 199                 MessageBox.Show(this, "Unable to open movie:\n\n" + ex, "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 200             }\r
 201         }\r
 202         #endregion\r
 203     }\r
 204 }\r