ChunkInfo Class

Article
05/31/2012

Defines per-chunk information for text/binary chunks of Smooth Streaming data.

Inheritance Hierarchy

System.Object
Microsoft.Web.Media.SmoothStreaming.ChunkInfo

Namespace: Microsoft.Web.Media.SmoothStreaming
Assembly: Microsoft.Web.Media.SmoothStreaming (in Microsoft.Web.Media.SmoothStreaming.dll)

Syntax

'Declaration

Public Class ChunkInfo _
    Implements IComparable
'Usage

Dim instance As ChunkInfo

public class ChunkInfo : IComparable

public ref class ChunkInfo : IComparable

type ChunkInfo =  
    class
        interface IComparable
    end

public class ChunkInfo implements IComparable

The ChunkInfo type exposes the following members.

Properties

	Name	Description
	Attributes	Gets or sets Attributes.
	Duration	Time duration that corresponds the to the <d> element in the manifest for the chunk.
	Stream	Gets the StreamInfo object.
	TimeStamp	Gets or sets the start time for the data chunk.

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Methods

	Name	Description
	CompareTo	Compares a chunk to another object.
	Equals	(Inherited from Object.)
	Finalize	(Inherited from Object.)
	GetHashCode	(Inherited from Object.)
	GetType	(Inherited from Object.)
	MemberwiseClone	(Inherited from Object.)
	ToString	(Inherited from Object.)

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Examples

The following example shows how to get the ChunkInfo objects in a StreamInfo object and how to call the asynchronous method BeginGetChunk(TimeSpan, AsyncCallback, Object). For more information, see Timeline Markers and Events.

    foreach (TrackInfo trackInfo in streamInfo.SelectedTracks)
    {
        foreach (ChunkInfo chunk in streamInfo.ChunkList.ToList<ChunkInfo>())
        {
            IAsyncResult ar =
                trackInfo.BeginGetChunk(
                chunk.TimeStamp, new AsyncCallback(AddMarkers), streamInfo.UniqueId);
        }
    }

The following example shows the call to the EndGetChunk(IAsyncResult) method. For more information on this asynchronous scenario, see Timeline Markers and Events.

    foreach (TrackInfo trackInfo in streamInfo.SelectedTracks)
    {
        ChunkResult chunkResult = trackInfo.EndGetChunk(argAR);

        if (chunkResult.Result == ChunkResult.ChunkResultState.Succeeded)
        {
            System.Text.Encoding enc = System.Text.Encoding.UTF8;
            int length = (int)chunkResult.ChunkData.Length;
            byte[] rawData = new byte[length];
            chunkResult.ChunkData.Read(rawData, 0, length);
            String text = enc.GetString(rawData, 0, rawData.Length);
            TimelineMarker newMarker = new TimelineMarker();
            newMarker.Text = text;
            newMarker.Time = chunkResult.Timestamp;

            SmoothPlayer.Markers.Add(newMarker);
        }
    }

Version Information

Silverlight

Supported in: 5

Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.