Week 5 (6/12 - 6/18)

Schedule

1. Mon, June 12
   • Meeting: 2:00 - 2:30 pm
   • Notes:
     • split up packets
       • concern: UDP is unreliable and packets can not arrive at all or arrive in different order
       • ensure ordering and reliable delivery
     • align depth and rgb frame: coordinate mapper
2. Tues, June 13
   • Meeting: 2:00 - 2:10 pm
   • Notes:
     • complete serialization
3. Wed, June 14
   • Meeting: 10:00 - 10:45 am
   • Notes:
     • Ditch serialization
     • Just Append Data to Byte Array
4. Thurs, Jun. 15
   • Notes:
     • Appended data ( timestamp, count, serial number)
5. Fri, Jun. 16
   • Notes:
     • compression
6. Sat, Jun. 17
   • Notes:
     • Kinect shut down immediately
       • 
         

UDP packet

Sender:

• packet class
  • id
  • data
  • serial number
  • amount
  • timestamp

Receiver

• pool
• dispose if overdue
• check if complete

serialize an object into an array of bytes (Portable Class Library)

BinaryFormatter Class

• Serializes and deserializes an object, or an entire graph of connected objects, in binary format.
• BinaryFormatter()

MemoryStream Class

• Creates a stream whose backing store is memory.
• ToArray()
  • Writes the stream contents to a byte array, regardless of the Position property.
  • This method omits unused bytes in MemoryStream from the array. To get the entire buffer, use the GetBuffer method.
• GetBuffer()
  • Returns the array of unsigned bytes from which this stream was created.
• GetBuffer vs ToArray
  • When you create a MemoryStream without providing a byte array (byte[]) , it creates an expandable capacity initialized to zero.
  • To obtain only the data in the buffer, use the ToArray method; however, ToArray creates a copy of the data in memory.
  • Use the GetBuffer method of the MemoryStream to avoid copying the data to a new byte array before you compress it.