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AudioProcessors Property

Summary

Gets the registered audio processors collection object.

Syntax

C#
VB
C++
public AudioProcessors AudioProcessors { get; } 
Public ReadOnly Property AudioProcessors As Leadtools.Mediafoundation.AudioProcessors 

Property Value

An AudioProcessors collection object representing the available audio processors.

Remarks

Gets the AudioProcessors collection object, containing registered audio processors. This AudioProcessors object is used to enumerate the available video and audio processing transforms.

Example

C#
VB
using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void ProcessorsExample() 
{ 
   // reference the convert control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   // input and output files 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi"); 
 
   try 
   { 
      // disable auto start 
      playctrl.AutoStart = false; 
 
      // set the event handler for state changes 
      playctrl.StateChanged += new StateChangedEventHandler(PlayCtrl_StateChanged); 
      // set source file 
      playctrl.SourceFile = inFile; 
 
      // if we have a video stream 
      if ((playctrl.AllowedStreams & StreamFormatType.Video) == StreamFormatType.Video) 
      { 
         // add the first video processor for playback 
         playctrl.SelectedVideoProcessors.Add(playctrl.VideoProcessors[0]); 
         Processor vproc = playctrl.SelectedVideoProcessors[0]; 
 
         // set the video processor properties 
         if (vproc.HasDialog(ProcessorDlg.Properties)) 
            vproc.ShowDialog(ProcessorDlg.Properties, _form); 
      } 
 
      // if we have an audio stream 
      if ((playctrl.AllowedStreams & StreamFormatType.Audio) == StreamFormatType.Audio) 
      { 
         // add the first audio processor for playback 
         playctrl.SelectedAudioProcessors.Add(playctrl.AudioProcessors[0]); 
         Processor aproc = playctrl.SelectedAudioProcessors[0]; 
 
         // set the audio processor properties 
         if (aproc.HasDialog(ProcessorDlg.Properties)) 
            aproc.ShowDialog(ProcessorDlg.Properties, _form); 
      } 
 
      // start the playback now 
      playctrl.Run(); 
 
      // we'll loop on the state and pump messages for this example. 
      // but you should not need to if running from a Windows Forms application. 
      while (playctrl.State == PlayState.Running) 
         Application.DoEvents(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
void PlayCtrl_StateChanged(object sender, StateChangedEventArgs e) 
{ 
   // set the result to what we expect 
   _result = (e.lastState == PlayState.Running && e.state == PlayState.Stopped); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
} 
Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub ProcessorsExample() 
   ' reference the convert control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   ' input and output files 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi") 
 
   Try 
      ' disable auto start 
      playctrl.AutoStart = False 
 
      ' set the event handler for state changes 
      AddHandler playctrl.StateChanged, AddressOf PlayCtrl_StateChanged 
      ' set source file 
      playctrl.SourceFile = inFile 
 
      ' if we have a video stream 
      If (playctrl.AllowedStreams And StreamFormatType.Video) = StreamFormatType.Video Then 
         ' add the first video processor for playback 
         playctrl.SelectedVideoProcessors.Add(playctrl.VideoProcessors(0)) 
         Dim vproc As Processor = playctrl.SelectedVideoProcessors(0) 
 
         ' set the video processor properties 
         If vproc.HasDialog(ProcessorDlg.Properties) Then 
            vproc.ShowDialog(ProcessorDlg.Properties, _form) 
         End If 
      End If 
 
      ' if we have an audio stream 
      If (playctrl.AllowedStreams And StreamFormatType.Audio) = StreamFormatType.Audio Then 
         ' add the first audio processor for playback 
         playctrl.SelectedAudioProcessors.Add(playctrl.AudioProcessors(0)) 
         Dim aproc As Processor = playctrl.SelectedAudioProcessors(0) 
 
         ' set the audio processor properties 
         If aproc.HasDialog(ProcessorDlg.Properties) Then 
            aproc.ShowDialog(ProcessorDlg.Properties, _form) 
         End If 
      End If 
 
      ' start the playback now 
      playctrl.Run() 
 
      ' we'll loop on the state and pump messages for this example. 
      ' but you should not need to if running from a Windows Forms application. 
      Do While playctrl.State = PlayState.Running 
         Application.DoEvents() 
      Loop 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Private Sub PlayCtrl_StateChanged(ByVal sender As Object, ByVal e As StateChangedEventArgs) 
   ' set the result to what we expect 
   _result = (e.lastState = PlayState.Running AndAlso e.state = PlayState.Stopped) 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media" 
End Class 

Requirements

Target Platforms

Help Version 19.0.2017.10.19
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Leadtools.MediaFoundation Assembly