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 Handbrake.EncodeQueue;\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         readonly QueryGenerator HbCommonFunc = new QueryGenerator();\r
  17         readonly Queue Process = new Queue();\r
  18         private delegate void UpdateUIHandler();\r
  19         String CurrentlyPlaying = "";\r
  20         readonly frmMain MainWindow;\r
  21         private Thread Player;\r
  22         private readonly Boolean NoQT;\r
  23 \r
  24         public frmPreview(frmMain mw)\r
  25         {\r
  26             try\r
  27             {\r
  28                 InitializeComponent();\r
  29             }\r
  30             catch (Exception)\r
  31             {\r
  32                 NoQT = true;\r
  33             }\r
  34             this.MainWindow = mw;\r
  35             cb_preview.SelectedIndex = 0;\r
  36             cb_duration.SelectedIndex = 1;\r
  37 \r
  38             cb_preview.Items.Clear();\r
  39             for (int i = 1; i <= Properties.Settings.Default.previewScanCount; i++)\r
  40                 cb_preview.Items.Add(i.ToString());\r
  41             cb_preview.SelectedIndex = 0;\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                 if (!NoQT)\r
  51                     QTControl.URL = "";\r
  52 \r
  53                 if (File.Exists(CurrentlyPlaying))\r
  54                     File.Delete(CurrentlyPlaying);\r
  55             }\r
  56             catch (Exception)\r
  57             {\r
  58                 MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  59             }\r
  60 \r
  61             btn_playQT.Enabled = false;\r
  62             btn_playVLC.Enabled = false;\r
  63             lbl_status.Text = "Encoding Sample for (VLC) ...";\r
  64             int duration;\r
  65             int.TryParse(cb_duration.Text, out duration);\r
  66             String query = HbCommonFunc.GenerateCLIQuery(MainWindow, 3, duration, cb_preview.Text);\r
  67             ThreadPool.QueueUserWorkItem(ProcMonitor, query);\r
  68         }\r
  69         private void btn_playQT_Click(object sender, EventArgs e)\r
  70         {\r
  71             if (NoQT)\r
  72             {\r
  73                 MessageBox.Show(this, "It would appear QuickTime 7 is not installed or not accessible. Please (re)install QuickTime.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  74                 return;\r
  75             }\r
  76             if (MainWindow.text_destination.Text.Contains(".mkv"))\r
  77             {\r
  78                 MessageBox.Show(this,\r
  79                                 "The QuickTime Control does not support MKV files, It is recommended you use VLC option instead.",\r
  80                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  81             }\r
  82             else\r
  83             {\r
  84                 lbl_status.Visible = true;\r
  85                 try\r
  86                 {\r
  87                     QTControl.URL = "";\r
  88                     if (File.Exists(CurrentlyPlaying))\r
  89                         File.Delete(CurrentlyPlaying);\r
  90                 }\r
  91                 catch (Exception)\r
  92                 {\r
  93                     MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  94                 }\r
  95 \r
  96                 btn_playQT.Enabled = false;\r
  97                 btn_playVLC.Enabled = false;\r
  98                 lbl_status.Text = "Encoding Sample for (QT) ...";\r
  99                 int duration;\r
 100                 int.TryParse(cb_duration.Text, out duration);\r
 101                 String query = HbCommonFunc.GenerateCLIQuery(MainWindow, 3, duration, cb_preview.Text);\r
 102 \r
 103                 ThreadPool.QueueUserWorkItem(ProcMonitor, query);\r
 104             }\r
 105         }\r
 106         private void ProcMonitor(object state)\r
 107         {\r
 108             // Make sure we are not already encoding and if we are then display an error.\r
 109             if (Process.HbProcess != null)\r
 110                 MessageBox.Show(this, "Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 111             else\r
 112             {\r
 113                 Process.CreatePreviewSample((string)state);\r
 114                 if (Process.HbProcess != null)\r
 115                 {\r
 116                     Process.HbProcess.WaitForExit();\r
 117                     Process.HbProcess = null;\r
 118                 }\r
 119                 EncodeCompleted();\r
 120             }\r
 121         }\r
 122         private void EncodeCompleted()\r
 123         {\r
 124             try\r
 125             {\r
 126                 if (InvokeRequired)\r
 127                 {\r
 128                     BeginInvoke(new UpdateUIHandler(EncodeCompleted));\r
 129                     return;\r
 130                 }\r
 131                 if (!NoQT)\r
 132                     btn_playQT.Enabled = true;\r
 133                 btn_playVLC.Enabled = true;\r
 134 \r
 135                 // Decide which Player to use.\r
 136                 String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";\r
 137 \r
 138                 lbl_status.Text = "Loading Clip ...";\r
 139 \r
 140                 // Get the sample filename\r
 141                 if (MainWindow.text_destination.Text != "")\r
 142                     CurrentlyPlaying = MainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").Replace(".mkv", "_sample.mkv"); ;\r
 143 \r
 144                 // Play back in QT or VLC\r
 145                 if (playerSelection == "QT")\r
 146                     Play();\r
 147                 else\r
 148                     PlayVLC();\r
 149 \r
 150                 lbl_status.Text = "";\r
 151             }\r
 152             catch (Exception exc)\r
 153             {\r
 154                 MessageBox.Show(this, "frmPreview.cs EncodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 155             }\r
 156         }\r
 157         #endregion\r
 158 \r
 159         #region Playback\r
 160 \r
 161         /// <summary>\r
 162         /// Play the video back in the QuickTime control\r
 163         /// </summary>\r
 164         private void Play()\r
 165         {\r
 166             Player = new Thread(OpenMovie) { IsBackground = true };\r
 167             Player.Start();\r
 168             lbl_status.Visible = false;\r
 169         }\r
 170 \r
 171         /// <summary>\r
 172         /// Play the video back in an external VLC Player\r
 173         /// </summary>\r
 174         private void PlayVLC()\r
 175         {\r
 176             // Launch VLC and Play video.\r
 177             if (CurrentlyPlaying != "")\r
 178             {\r
 179                 if (File.Exists(CurrentlyPlaying))\r
 180                 {\r
 181                     // Attempt to find VLC if it doesn't exist in the default set location.\r
 182                     string vlcPath;\r
 183                     \r
 184                     if (8 == IntPtr.Size || (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))\r
 185                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles(x86)");\r
 186                     else\r
 187                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles");\r
 188       \r
 189                     vlcPath = vlcPath != null ? vlcPath + @"\VideoLAN\VLC\vlc.exe" : @"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe";\r
 190                     \r
 191                     if (!File.Exists(Properties.Settings.Default.VLC_Path))\r
 192                     {\r
 193                         if (File.Exists(vlcPath))\r
 194                         {\r
 195                             Properties.Settings.Default.VLC_Path = "C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe";\r
 196                             Properties.Settings.Default.Save(); // Save this new path if it does\r
 197                         }\r
 198                         else\r
 199                         {\r
 200                             MessageBox.Show(this,\r
 201                                             "Unable to detect VLC Player. \nPlease make sure VLC is installed and the directory specified in HandBrake's options is correct. (See: \"Tools Menu > Options > Picture Tab\") ",\r
 202                                             "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 203                         }\r
 204                     }\r
 205 \r
 206                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 207                     {\r
 208                         String args = "\"" + CurrentlyPlaying + "\"";\r
 209                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 210                         System.Diagnostics.Process.Start(vlc);\r
 211                         lbl_status.Text = "VLC will now launch.";\r
 212                     }\r
 213 \r
 214                 }\r
 215                 else\r
 216                     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
 217             }\r
 218             lbl_status.Visible = false;\r
 219         }\r
 220 \r
 221         /// <summary>\r
 222         /// QT control - Open the file\r
 223         /// </summary>\r
 224         [STAThread]\r
 225         private void OpenMovie()\r
 226         {\r
 227             try\r
 228             {\r
 229                 if (InvokeRequired)\r
 230                 {\r
 231                     BeginInvoke(new UpdateUIHandler(OpenMovie));\r
 232                     return;\r
 233                 }\r
 234                 QTControl.URL = CurrentlyPlaying;\r
 235                 QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);\r
 236                 QTControl.URL = CurrentlyPlaying;\r
 237                 QTControl.Show();\r
 238 \r
 239                 this.ClientSize = QTControl.Size;\r
 240                 this.Height += 25;\r
 241             }\r
 242             catch (COMException ex)\r
 243             {\r
 244                 QTUtils qtu = new QTUtils();\r
 245                 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
 246             }\r
 247             catch (Exception ex)\r
 248             {\r
 249                 MessageBox.Show(this, "Unable to open movie:\n\n" + ex, "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 250             }\r
 251         }\r
 252         #endregion\r
 253     }\r
 254 }\r