|
static private ConvertStreamsToGuids ( IEnumerable |
||
| streamNames | IEnumerable |
Collection of strings to convert to Guids |
| return | HashSet |
|
/// <summary>
/// Converts a collection of stream strings to DataTypeIDs (Guids) that can be played back to the Kinect sensor
/// </summary>
/// <param name="streamNames">Collection of strings to convert to Guids</param>
/// <returns>Collection of Guids, which includes DataTypeIDs for each stream</returns>
internal static HashSet <Guid> ConvertStreamsToPlaybackGuids(IEnumerable <string> streamNames)
{
if (streamNames == null)
{
throw new ArgumentNullException("streamNames");
}
if (streamNames.Count <string>() == 0)
{
throw new InvalidOperationException(Strings.ErrorNoStreams);
}
HashSet <Guid> streamGuids = StreamSupport.ConvertStreamsToGuids(streamNames);
// remove body streams from the playback collection
if (streamGuids.Contains(KStudioEventStreamDataTypeIds.Body))
{
Console.WriteLine(Strings.WarningIgnoreBodyDuringPlayback);
streamGuids.Remove(KStudioEventStreamDataTypeIds.Body);
}
if (streamGuids.Contains(KStudioEventStreamDataTypeIds.BodyIndex))
{
Console.WriteLine(Strings.WarningIgnoreBodyIndexDuringPlayback);
streamGuids.Remove(KStudioEventStreamDataTypeIds.BodyIndex);
}
return(streamGuids);
}
/// <summary>
/// Records streams from the Kinect sensor to an event file
/// </summary>
/// <param name="client">KStudioClient which is connected to the Kinect service</param>
/// <param name="filePath">Path to new event file which will be created for recording</param>
/// <param name="duration">How long the recording should last before being stopped</param>
/// <param name="streamNames">Collection of streams to include in the recording</param>
public static void RecordClip(KStudioClient client, string filePath, TimeSpan duration, IEnumerable <string> streamNames)
{
if (client == null)
{
throw new ArgumentNullException("client");
}
if (!client.IsServiceConnected)
{
throw new InvalidOperationException(Strings.ErrorNotConnected);
}
if (string.IsNullOrEmpty(filePath))
{
throw new ArgumentNullException("filePath");
}
HashSet <Guid> streamDataTypeIds = new HashSet <Guid>();
KStudioEventStreamSelectorCollection streamCollection = new KStudioEventStreamSelectorCollection();
KStudioRecording recording = null;
// decide which streams to record
if (streamNames != null && streamNames.Count <string>() > 0)
{
streamDataTypeIds = StreamSupport.ConvertStreamsToGuids(streamNames);
StreamSupport.VerifyStreamsForRecordAndPlayback(streamDataTypeIds);
}
else
{
if (Path.GetExtension(filePath).ToLower().Equals(Strings.XrfExtension))
{
streamDataTypeIds.Add(KStudioEventStreamDataTypeIds.RawIr);
}
else
{
streamDataTypeIds.Add(KStudioEventStreamDataTypeIds.Ir);
streamDataTypeIds.Add(KStudioEventStreamDataTypeIds.Depth);
streamDataTypeIds.Add(KStudioEventStreamDataTypeIds.Body);
streamDataTypeIds.Add(KStudioEventStreamDataTypeIds.BodyIndex);
}
}
// verify streams are recordable by the Kinect sensor
foreach (Guid stream in streamDataTypeIds)
{
KStudioEventStream eventStream = client.GetEventStream(stream, KStudioEventStreamSemanticIds.KinectDefaultSensorProducer);
if (!eventStream.IsRecordable)
{
throw new InvalidOperationException(string.Format(Strings.ErrorRecordingStreamNotSupported, StreamSupport.ConvertStreamGuidToString(stream)));
}
streamCollection.Add(stream);
}
// fix file extension, if necessary
if (streamDataTypeIds.Contains(KStudioEventStreamDataTypeIds.RawIr) && Path.GetExtension(filePath).ToUpperInvariant().Equals(Strings.XefExtension.ToUpperInvariant()))
{
Path.ChangeExtension(filePath, Strings.XrfExtension);
}
// attempt to record streams for the specified duration
try
{
recording = client.CreateRecording(filePath, streamCollection);
}
catch (Exception)
{
//K4W supports uncompressed and compressed color, so if we get an error, try recording the other type
streamCollection = StreamSupport.CreateStreamCollection(streamDataTypeIds, true);
recording = client.CreateRecording(filePath, streamCollection);
}
using (recording)
{
recording.StartTimed(duration);
while (recording.State == KStudioRecordingState.Recording)
{
Thread.Sleep(500);
}
if (recording.State == KStudioRecordingState.Error)
{
throw new InvalidOperationException(Strings.ErrorRecordingFailed);
}
}
}
