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