AudioControlTemplate.GetChannels Method

Reference

Definition

Namespace:: Microsoft.Rtc.Collaboration.AudioVideo

Assembly:: Microsoft.Rtc.Collaboration.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets audio channels.

public:
 System::Collections::Generic::IDictionary<Microsoft::Rtc::Collaboration::AudioVideo::ChannelLabel, Microsoft::Rtc::Collaboration::AudioVideo::AudioChannelTemplate ^> ^ GetChannels();

public System.Collections.Generic.IDictionary<Microsoft.Rtc.Collaboration.AudioVideo.ChannelLabel,Microsoft.Rtc.Collaboration.AudioVideo.AudioChannelTemplate> GetChannels ();

member this.GetChannels : unit -> System.Collections.Generic.IDictionary<Microsoft.Rtc.Collaboration.AudioVideo.ChannelLabel, Microsoft.Rtc.Collaboration.AudioVideo.AudioChannelTemplate>

Public Function GetChannels () As IDictionary(Of ChannelLabel, AudioChannelTemplate)

Returns

IDictionary<ChannelLabel,AudioChannelTemplate>

Dictionary with with an AudioChannelTemplate indexed by its ChannelLabel

Examples

The following example creates an AudioVideoFlowTemplate based on an AudioVideoFlow, modifies AudioChannelTemplate properties and apply its changes to the AudioVideoFlow.

C# Modifying AudioChannelTemplate properties.


AudioVideoFlowTemplate templateToApply = new AudioVideoFlowTemplate(audioVideoFlow);
AudioChannelTemplate audioChannelTemplate = (AudioChannelTemplate)templateToApply.Audio.GetChannels()[ChannelLabel.AudioMono];
audioChannelTemplate.AllowedDirection = MediaChannelDirection.SendOnly;
audioChannelTemplate.SendDirectionSamplingRate = AudioSamplingRate.EightKhz;

// ApplyChanges
audioVideoFlow.BeginApplyChanges(
    templateToApply,
    new AsyncCallback(delegate(IAsyncResult result)
    {
        try
        {
            audioVideoFlow.EndApplyChanges(result);
        }
        catch (RealTimeException e)
        {
            // handle exception
            throw e;
        }

        // ApplyChanges is done, verify changes result..
        AudioChannel audioChannel = audioVideoFlow.Audio.GetChannels()[ChannelLabel.AudioMono];
        if (audioChannel.Direction == MediaChannelDirection.SendOnly &amp;&amp;
            audioChannel.SendDirectionSamplingRate == AudioSamplingRate.EightKhz)
        {
            // remote side accepted changes as they were
        }
        else
        {
            // remote side accepted changes but filtered them more.
        }
    }),
    this);

Remarks

Returns a read-only dictionary of the channels held by AudioControlTemplate. Any modification of the Dictionary will not have an effect, as the returned object is a copy of the original.

Applies to

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