Gets the registered audio renderers collection object.
[EditorAttribute(System.Type, System.Type)]
public AudioRenderers AudioRenderers { get; }
Public ReadOnly Property AudioRenderers As AudioRenderers
public:
property AudioRenderers^ AudioRenderers {
AudioRenderers^ get();
}
An AudioRenderers collection object representing the available audio renderers.
Gets the registered audio renderers collection object. The AudioRenderers object is used to enumerate the available audio renderers, and to select a renderer for audio output.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public PlayCtrlForm _form = new PlayCtrlForm();
public PlayCtrl _playctrl;
public TestCtrlSubForm _pcsbform;
public void RenderersExample()
{
// reference the play control
_playctrl = _form.PlayCtrl;
// input file
string inFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_SourceVideoOnly.avi");
try
{
// create the sub form for renderers listbox
_pcsbform = new TestCtrlSubForm();
_pcsbform.Load += new EventHandler(Form_Load);
_pcsbform.buttonRefresh.Click += new EventHandler(Refresh_Click);
_pcsbform.List.Click += new EventHandler(List_Click);
// set autostart to false
_playctrl.AutoStart = false;
// set our source media file
_playctrl.SourceFile = inFile;
// show the renderers form
_pcsbform.ShowDialog();
// get the selected renderer index
int selectedRenderer = _playctrl.AudioRenderers.Selection;
// set the result to what we expect
_result = (_pcsbform.List.SelectedItem != null && _playctrl.AudioRenderers.Selection != -1);
}
catch (Exception)
{
_result = false;
}
}
void Form_Load(object sender, EventArgs e)
{
// build the audio renderer list
EnumerateRenderers(_playctrl.AudioRenderers, _pcsbform.List);
}
void List_Click(object sender, EventArgs e)
{
// select the audio renderer
SelectRenderer(_playctrl.AudioRenderers, _pcsbform.List);
}
void Refresh_Click(object sender, EventArgs e)
{
// refresh audio renderers
RefreshRenderers(_playctrl.AudioRenderers, _pcsbform.List);
}
void EnumerateRenderers(AudioRenderers Renderers, ListBox List)
{
// Build the renderers list box
int Selected = -1;
// empty the list box
List.Items.Clear();
// add the available audio renderers to the list box
for (int i = 0; (i <= (Renderers.Count - 1)); i++)
{
List.Items.Add(Renderers[i]);
if (Renderers[i].Selected)
{
Selected = i;
}
}
// highlight the current selection
List.SelectedIndex = Selected;
}
void RefreshRenderers(AudioRenderers Renderers, ListBox List)
{
string SelectedName = string.Empty;
// save the currently selected renderer's name
if (Renderers.Selection >= 0)
SelectedName = Renderers[Renderers.Selection].FriendlyName;
// refresh the renderer collection
Renderers.Refresh();
// if there was a previously selected renderer, reselect it
if (SelectedName != string.Empty)
Renderers.Selection = Renderers.IndexOf(SelectedName);
// rebuild the listbox
EnumerateRenderers(Renderers, List);
}
void SelectRenderer(AudioRenderers Renderers, ListBox List)
{
// select the highlighted renderer
Renderers.Selection = Renderers.IndexOf(List.Items[List.SelectedIndex] as Renderer);
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media";
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
Public _result As Boolean = False
Public _form As PlayCtrlForm = New PlayCtrlForm()
Public _playctrl As PlayCtrl
Public _pcsbform As TestCtrlSubForm
Public Sub RenderersExample()
' reference the play control
_playctrl = _form.PlayCtrl
' input file
Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_SourceVideoOnly.avi")
Try
' create the sub form for renderers listbox
_pcsbform = New TestCtrlSubForm()
AddHandler _pcsbform.Load, AddressOf Form_Load
AddHandler _pcsbform.buttonRefresh.Click, AddressOf Refresh_Click
AddHandler _pcsbform.List.Click, AddressOf List_Click
' set autostart to false
_playctrl.AutoStart = False
' set our source media file
_playctrl.SourceFile = inFile
' show the renderers form
_pcsbform.ShowDialog()
' get the selected renderer index
Dim selectedRenderer As Integer = _playctrl.AudioRenderers.Selection
' set the result to what we expect
_result = (Not _pcsbform.List.SelectedItem Is Nothing AndAlso _playctrl.AudioRenderers.Selection <> -1)
Catch e1 As Exception
_result = False
End Try
End Sub
Private Sub Form_Load(ByVal sender As Object, ByVal e As EventArgs)
' build the audio renderer list
EnumerateRenderers(_playctrl.AudioRenderers, _pcsbform.List)
End Sub
Private Sub List_Click(ByVal sender As Object, ByVal e As EventArgs)
' select the audio renderer
SelectRenderer(_playctrl.AudioRenderers, _pcsbform.List)
End Sub
Private Sub Refresh_Click(ByVal sender As Object, ByVal e As EventArgs)
' refresh audio renderers
RefreshRenderers(_playctrl.AudioRenderers, _pcsbform.List)
End Sub
Private Sub EnumerateRenderers(ByVal Renderers As AudioRenderers, ByVal List As ListBox)
' Build the renderers list box
Dim Selected As Integer = -1
' empty the list box
List.Items.Clear()
' add the available audio renderers to the list box
Dim i As Integer = 0
Do While (i <= (Renderers.Count - 1))
List.Items.Add(Renderers(i))
If Renderers(i).Selected Then
Selected = i
End If
i += 1
Loop
' highlight the current selection
List.SelectedIndex = Selected
End Sub
Private Sub RefreshRenderers(ByVal Renderers As AudioRenderers, ByVal List As ListBox)
Dim SelectedName As String = String.Empty
' save the currently selected renderer's name
If Renderers.Selection >= 0 Then
SelectedName = Renderers(Renderers.Selection).FriendlyName
End If
' refresh the renderer collection
Renderers.Refresh()
' if there was a previously selected renderer, reselect it
If SelectedName <> String.Empty Then
Renderers.Selection = Renderers.IndexOf(SelectedName)
End If
' rebuild the listbox
EnumerateRenderers(Renderers, List)
End Sub
Private Sub SelectRenderer(ByVal Renderers As AudioRenderers, ByVal List As ListBox)
' select the highlighted renderer
Renderers.Selection = Renderers.IndexOf(TryCast(List.Items(List.SelectedIndex), Renderer))
End Sub
Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"
End Class
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.