/// <summary>
/// Initializes a new instance of the StreamData class and sets all properties based on the KStudioEventStream provided
/// </summary>
/// <param name="stream">KStudioEventStream to get data from</param>
public StreamData(KStudioEventStream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
this.EventStream = stream;
this.PublicMetadata = stream.GetMetadata(KStudioMetadataType.Public);
this.PersonalMetadata = stream.GetMetadata(KStudioMetadataType.PersonallyIdentifiableInformation);
this.EventHeaders = new ObservableCollection <KStudioEventHeader>();
KStudioSeekableEventStream seekStream = stream as KStudioSeekableEventStream;
if (seekStream != null)
{
this.StartTime = seekStream.StartRelativeTime;
this.EndTime = seekStream.EndRelativeTime;
List <KStudioEventHeader> headers = seekStream.EventHeaders.ToList();
foreach (KStudioEventHeader header in headers)
{
this.EventHeaders.Add(header);
}
}
}
/// <summary>
/// Updates (add/edits) stream-level metadata in an event file
/// </summary>
/// <param name="client">KStudioClient to use for accessing the event file</param>
/// <param name="fileName">Path to event file</param>
/// <param name="streamName">Name of stream which should contain the metadata</param>
/// <param name="type">Type of metadata to update (Public or Personal)</param>
/// <param name="key">Key of metadata object to add/edit</param>
/// <param name="value">Value of metadata object to add/edit</param>
/// <returns>String which contains the updated contents of the target metadata object</returns>
public static string UpdateStreamMetadata(KStudioClient client, string fileName, string streamName, KStudioMetadataType type, string key, object value)
{
if (client == null)
{
throw new ArgumentNullException("client");
}
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException("fileName");
}
if (string.IsNullOrEmpty(streamName))
{
throw new ArgumentNullException("streamName");
}
string metadataText = string.Empty;
using (KStudioEventFile file = client.OpenEventFileForEdit(fileName))
{
// find the stream in the file and alter its metadata
Guid dataTypeId = StreamSupport.ConvertStreamStringToGuid(streamName);
if (dataTypeId == KStudioEventStreamDataTypeIds.Null)
{
throw new InvalidOperationException(Strings.ErrorNullStream);
}
KStudioEventStream stream = file.EventStreams.FirstOrDefault(s => s.DataTypeId == dataTypeId);
if (stream != null)
{
KStudioMetadata metadata = stream.GetMetadata(type);
Metadata.AlterMetadata(metadata, key, value);
metadataText = Metadata.GetMetadataAsText(metadata, type, stream.DataTypeName);
}
}
return(metadataText);
}