public KinectFramesStore(KinectFramesStore toCopy)
{
// Constructor for creating a deep copy of another frame store
frames = toCopy.frames;
MaxFramesCount = toCopy.MaxFramesCount;
frameIndex = 0;
}
public void SerializeAndSaveFileChunk(string fileName, KinectFramesStore serializableData)
{
// Check that the specified file exists
if (!DoesFileExist(fileName))
{
throw new FileNotFoundException("Could not find the specified file");
}
// Use a binary formatter and memory stream to first serialize the incoming
// chunk. Then, use QuickLZ to compress this data before writing it into the
// file
BinaryFormatter formatter = new BinaryFormatter();
using (MemoryStream memoryStream = new MemoryStream())
{
try
{
formatter.Serialize(memoryStream, serializableData);
}
catch (SerializationException)
{
throw new SerializationException("Error in serializing kinect data");
}
// Reset the memory stream to its beginning and then compress the serialized object.
// Level 1 gives a higher compression ration and Level 3 gives faster decompression
memoryStream.Position = 0;
byte[] compressedBytes = QuickLZ.compress(memoryStream.ToArray(), 3);
// Append the chunk onto the file, also recording the size of the new chunk using the
// stream position before and after the write so that it can be stored in the file info
// object
long startPosition, endPosition;
using (FileStream fileStream = new FileStream(GetFullFilePath(fileName), FileMode.Append, FileAccess.Write))
{
startPosition = fileStream.Position;
try
{
fileStream.Write(compressedBytes, 0, compressedBytes.Length);
}
catch (IOException)
{
throw new IOException("Could not write chunk data to file");
}
endPosition = fileStream.Position;
}
// Add a new chunk size to the file info object's internal list using the stream
// position differences
fileInfo.ChunkSizes.Add(endPosition - startPosition);
}
}