private XEFEvent ReadDataEvent()
{
if (!EndOfStream)
{
try
{
short streamIndex, streamFlags;
GetEventKey(out streamIndex, out streamFlags);
// Get event stream
XEFStream eventStream = null;
if (_streams.ContainsKey(streamIndex))
{
eventStream = _streams[streamIndex];
}
// Read event metadata
int dataSize = _reader.ReadInt32();
TimeSpan relativeTime = TimeSpan.FromTicks(_reader.ReadInt64());
uint unknown = _reader.ReadUInt32();
int fullDataSize = _reader.ReadInt32(); // Uncompressed data size
// Read tag if needed
byte[] tagData = null;
int frameIndex = 0;
if (eventStream != null)
{
if (eventStream.TagSize > 0)
{
tagData = _reader.ReadBytes(eventStream.TagSize);
// Treat tag as frame number
if (eventStream.TagSize == 4)
{
frameIndex = BitConverter.ToInt32(tagData, 0);
}
}
Debug.Assert(!eventStream.IsCompressed || fullDataSize != dataSize); // Verify event is valid
}
else
{
tagData = _reader.ReadBytes(DataConstants.EVENT_DEFAULT_TAG_SIZE);
}
// Read event data
byte[] eventData = _reader.ReadBytes(dataSize);
return(new XEFEvent(eventStream, frameIndex, relativeTime, fullDataSize, tagData, eventData, unknown));
}
catch (IOException)
{
EndOfStream = true;
StreamError = true;
}
}
return(null);
}
public XEFEvent(XEFStream eventStream, int frameIndex, TimeSpan relativeTime, int eventDataSize, byte[] tagData, byte[] eventData, uint unknown)
{
EventStream = eventStream;
FrameIndex = frameIndex;
RelativeTime = relativeTime;
TagData = tagData;
EventDataSize = eventDataSize;
RawEventData = eventData;
Unknown = unknown;
if (EventStream != null)
{
EventIndex = EventStream.EventCount;
EventStream.AddEvent(this); // Need to tell stream that an event has been added
}
}