LoadSettingsFromFile Method (ConvertCtrl)

Loads some or all of the convert object settings from a file.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub LoadSettingsFromFile( _
   ByVal sourceFile As String, _
   ByVal flags As ConvertSettings _
)

'Usage
 
Dim instance As ConvertCtrl
Dim sourceFile As String
Dim flags As ConvertSettings
 
instance.LoadSettingsFromFile(sourceFile, flags)

public virtual void LoadSettingsFromFile( 
   string sourceFile,
   ConvertSettings flags
)

public:
virtual void LoadSettingsFromFile( 
   String^ sourceFile,
   ConvertSettings flags
)

Parameters

sourceFile: The file from which settings will be loaded.
flags: The setting flags specifying which settings to load. See the ConvertSettings enumeration for the setting options.

Remarks

Loads some or all of the convert object settings from a file. This reconstructs the conversion configuration using the settings found in the file. The convert object settings can be saved to a file by calling the SaveSettingsToFile method. Settings can be saved to a stream by calling the SaveSettingsToStream method. Settings saved to a stream can be loaded using the LoadSettingsFromStream method. It may be helpful to call the CanSaveObjectSettings method before calling the save methods. This ensures the settings can be saved. If either SaveSettingsToFile or SaveSettingsToStream is called for settings that cannot be saved, the save method will fail.

Example

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Public _convertctrl As ConvertCtrl
Public _streamSettings As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ObjectSettingsExample_Stream.xml")
Public _fileSettings As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ObjectSettingsExample.xml")

Public Sub ObjectSettingsExample()
   ' reference the play control
   _convertctrl = _form.ConvertCtrl

   ' input and output files
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ObjectSettingsExample.avi")

   Try
      Dim pVideoDizzy As Processor = _convertctrl.VideoProcessors.EFXDizzy
      ' set a video processor
      _convertctrl.SelectedVideoProcessors.Add(pVideoDizzy)

      ' save the settings to a file
      If SaveFileSettings() Then
         ' now clear the selected processors again
         _convertctrl.SelectedVideoProcessors.Clear()

               ' check if a stream file exists
         If File.Exists(_fileSettings) Then
            ' load the saved settings from a file
            ' and check if the processor is selected again
            LoadFileSettings()

            ' set the result 
            _result = _convertctrl.SelectedVideoProcessors.Contains(pVideoDizzy)
         End If
      End If

      ' save the settings to a stream
      If SaveStreamSettings() Then
         ' now clear the selected processors again
         _convertctrl.SelectedVideoProcessors.Clear()

               ' check if a stream file exists
         If File.Exists(_streamSettings) Then
            ' load the saved settings from a stream 
            ' and check if the processor is selected again
            LoadStreamSettings()

            ' set the result 
            _result = _result And _convertctrl.SelectedVideoProcessors.Contains(pVideoDizzy)
         End If
      End If
   Catch e1 As Exception
      _result = False
   End Try
End Sub

Private Sub LoadFileSettings()
   _convertctrl.LoadSettingsFromFile(_fileSettings, ConvertSettings.Processors)
End Sub

Private Function SaveFileSettings() As Boolean
       '  check if we can save the processor's settings
   If _convertctrl.CanSaveObjectSettings(ConvertSettings.Processors) Then
      _convertctrl.SaveSettingsToFile(_fileSettings, ConvertSettings.Processors)
      Return True
   End If
   Return False
End Function

Private Sub LoadStreamSettings()
   Dim settings As Stream = New StreamReader(_streamSettings).BaseStream
   _convertctrl.LoadSettingsFromStream(settings, ConvertSettings.Processors)
   settings.Close()
End Sub

Private Function SaveStreamSettings() As Boolean
   '  check if we can save the processors settings
   If _convertctrl.CanSaveObjectSettings(ConvertSettings.Processors) Then
      Dim settings As Stream = New StreamWriter(_streamSettings, False).BaseStream
      _convertctrl.SaveSettingsToStream(settings, ConvertSettings.Processors)
      settings.Close()
      Return True
   End If
   Return False
End Function

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class

using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

public bool _result = false;
public ConvertCtrlForm _form = new ConvertCtrlForm();
public ConvertCtrl _convertctrl;
public string _streamSettings = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_ObjectSettingsExample_Stream.xml");
public string _fileSettings = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_ObjectSettingsExample.xml");

public void ObjectSettingsExample()
{
   // reference the play control
   _convertctrl = _form.ConvertCtrl;

   // input and output files
   string inFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_ObjectSettingsExample.avi");

   try
   {
      Processor pVideoDizzy = _convertctrl.VideoProcessors.EFXDizzy;
      // set a video processor
      _convertctrl.SelectedVideoProcessors.Add(pVideoDizzy);

      // save the settings to a file
      if (SaveFileSettings())
      {
         // now clear the selected processors again
         _convertctrl.SelectedVideoProcessors.Clear();

         // check whether stream file exists
         if (File.Exists(_fileSettings))
         {
            // load the saved settings from a file
            // and check whether the processor is selected again
            LoadFileSettings();

            // set the result 
            _result = _convertctrl.SelectedVideoProcessors.Contains(pVideoDizzy);
         }
      }

      // save the settings to a stream
      if (SaveStreamSettings())
      {
         // now clear the selected processors again
         _convertctrl.SelectedVideoProcessors.Clear();

         // check whether the stream file exists
         if (File.Exists(_streamSettings))
         {
            // load the saved settings from a stream 
            // and check whether the processor is selected again
            LoadStreamSettings();

            // set the result 
            _result &= _convertctrl.SelectedVideoProcessors.Contains(pVideoDizzy);
         }
      }
   }
   catch (Exception)
   {
      _result = false;
   }
}

private void LoadFileSettings()
{
   _convertctrl.LoadSettingsFromFile(_fileSettings, ConvertSettings.Processors);
}

private bool SaveFileSettings()
{
   //  check whether we can save the processors settings
   if (_convertctrl.CanSaveObjectSettings(ConvertSettings.Processors))
   {
      _convertctrl.SaveSettingsToFile(_fileSettings, ConvertSettings.Processors);
      return true;
   }
   return false;
}

private void LoadStreamSettings()
{
   Stream settings = new StreamReader(_streamSettings).BaseStream;
   _convertctrl.LoadSettingsFromStream(settings, ConvertSettings.Processors);
   settings.Close();
}

private bool SaveStreamSettings()
{
   //  check whether we can save the processors settings
   if (_convertctrl.CanSaveObjectSettings(ConvertSettings.Processors))
   {
      Stream settings = new StreamWriter(_streamSettings, false).BaseStream;
      _convertctrl.SaveSettingsToStream(settings, ConvertSettings.Processors);
      settings.Close();
      return true;
   }
   return false;
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Requirements

Target Platforms

Reference

ConvertCtrl Class
ConvertCtrl Members