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 \r
  22         public frmPreview(frmMain mw)\r
  23         {\r
  24             InitializeComponent();\r
  25             this.mainWindow = mw;\r
  26             cb_preview.SelectedIndex = 0;\r
  27             cb_duration.SelectedIndex = 1;\r
  28         }\r
  29  \r
  30         #region Encode Sample\r
  31         private void btn_playVLC_Click(object sender, EventArgs e)\r
  32         {\r
  33             btn_playQT.Enabled = false;\r
  34             btn_playVLC.Enabled = false;\r
  35             lbl_status.Text = "Encoding Sample for (VLC) ...";\r
  36             String query = hb_common_func.GeneratePreviewQuery(mainWindow, cb_duration.Text, cb_preview.Text);\r
  37             ThreadPool.QueueUserWorkItem(procMonitor, query);  \r
  38         }\r
  39         private void btn_playQT_Click(object sender, EventArgs e)\r
  40         {\r
  41             btn_playQT.Enabled = false;\r
  42             btn_playVLC.Enabled = false;\r
  43             lbl_status.Text = "Encoding Sample for (QT) ...";\r
  44             String query = hb_common_func.GeneratePreviewQuery(mainWindow, cb_duration.Text, cb_preview.Text);\r
  45             ThreadPool.QueueUserWorkItem(procMonitor, query);\r
  46         }\r
  47         private void procMonitor(object state)\r
  48         {\r
  49             // Make sure we are not already encoding and if we are then display an error.\r
  50             if (hbProc != null)\r
  51                 MessageBox.Show("Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  52             else\r
  53             {\r
  54                 hbProc = process.runCli(this, (string)state);\r
  55                 hbProc.WaitForExit();\r
  56                 hbProc = null;\r
  57                 encodeCompleted();\r
  58             }\r
  59         }\r
  60         private void encodeCompleted()\r
  61         {\r
  62             try\r
  63             {\r
  64                 if (InvokeRequired)\r
  65                 {\r
  66                     BeginInvoke(new UpdateUIHandler(encodeCompleted));\r
  67                     return;\r
  68                 }\r
  69                 btn_playQT.Enabled = true;\r
  70                 btn_playVLC.Enabled = true;\r
  71 \r
  72                 // Decide which player to use.\r
  73                 String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";\r
  74 \r
  75                 lbl_status.Text = "Loading Clip ...";\r
  76 \r
  77                 // Get the sample filename\r
  78                 if (mainWindow.text_destination.Text != "")\r
  79                     currently_playing = mainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").Replace(".avi", "_sample.avi").Replace(".ogm", "_sample.ogm");\r
  80 \r
  81                 // Play back in QT or VLC\r
  82                 if (playerSelection == "QT")\r
  83                     play();\r
  84                 else \r
  85                     playVLC();\r
  86                 \r
  87                 lbl_status.Text = "";\r
  88             }\r
  89             catch (Exception exc)\r
  90             {\r
  91                 MessageBox.Show("frmPreview.cs encodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  92             }\r
  93         }\r
  94         #endregion\r
  95 \r
  96         #region Playback\r
  97 \r
  98         /// <summary>\r
  99         /// Play the video back in the QuickTime control\r
 100         /// </summary>\r
 101         private void play()\r
 102         {\r
 103             player = new Thread(OpenMovie) { IsBackground = true };\r
 104             player.Start();\r
 105         }\r
 106 \r
 107         /// <summary>\r
 108         /// Play the video back in an external VLC player\r
 109         /// </summary>\r
 110         private void playVLC()\r
 111         {\r
 112             // Launch VLC and play video.\r
 113             if (currently_playing != "")\r
 114             {\r
 115                 if (File.Exists(currently_playing))\r
 116                 {\r
 117                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 118                     {\r
 119                         String args = "\"" + currently_playing + "\"";\r
 120                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 121                         Process.Start(vlc);\r
 122                         lbl_status.Text = "VLC will now launch.";\r
 123                     }\r
 124                     else\r
 125                         MessageBox.Show("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
 126                 }\r
 127                 else\r
 128                     MessageBox.Show("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
 129             }\r
 130         }\r
 131 \r
 132         /// <summary>\r
 133         /// QT control - Open the file\r
 134         /// </summary>\r
 135         [STAThread]\r
 136         private void OpenMovie()\r
 137         {\r
 138             try\r
 139             {\r
 140                 if (InvokeRequired)\r
 141                 {\r
 142                     BeginInvoke(new UpdateUIHandler(OpenMovie));\r
 143                     return;\r
 144                 }\r
 145                 QTControl.URL = currently_playing;\r
 146                 QTControl.Width = QTControl.Movie.Width;\r
 147                 QTControl.Height = QTControl.Movie.Height;\r
 148                 // The initial control size is 64,64. If we do not reload the clip here\r
 149                 // it'll scale the video from 64,64. \r
 150                 // Unsure why as it correctly resizes the control to the movies actual size.\r
 151                 QTControl.URL = currently_playing;\r
 152                 QTControl.SetScale(0);\r
 153                 QTControl.Show();\r
 154 \r
 155                 this.Width = QTControl.Width + 5;\r
 156                 this.Height = QTControl.Height + 90;\r
 157             }\r
 158             catch (COMException ex)\r
 159             {\r
 160                 QTUtils qtu = new QTUtils();\r
 161                 MessageBox.Show("Unable to open movie:\n\nError Code: " + ex.ErrorCode.ToString("X") + "\nQT Error code : " + qtu.QTErrorFromErrorCode(ex.ErrorCode));\r
 162             }\r
 163             catch (Exception ex)\r
 164             {\r
 165                 MessageBox.Show("Unable to open movie:\n\n" + ex);\r
 166             }\r
 167         }\r
 168         #endregion\r
 169     }\r
 170 }