Verbesserte Präsenz durch Screensharing für ein Werkzeug zur verteilten Paarprogrammierung (ThesisDPPXIII)

Activities

• still releasemanager, release has been deferred
• worked on preparation presentation

Results

• preparation presentation is done
• releasemanager
  • released Saros v9.10.30.r1833
  • changed/expanded some steps in release instructions
  • merged changes back to trunk
• DPPOutReach
  • en.wikipedia.org/wiki/Pair_programming
  • en.wikipedia.org/wiki/Collaborative_real-time_editor
  • http://www.mister-wong.de/tags/saros/

Problems

Comments

• not done
  • find reason why some containerformats don't work in xuggler

Goals

• complete base architecture for screenshareapp
• send some bugreports to xuggler

Activities

• worked on base architecture
• meeting with Stephan and Karl on wednesday

Results

• wrote usecases (ThesisDPPXIIIUseCases) and requirements
• developed modules (functionality, responsibilities)
• meeting
  • shorten iterations to 2 weeks
  • immediately integrate screensharing into saros
• some bugreports for xuggler
  • Issue 222
  • Issue 223

Problems

Comments

• this week was not really productive, i increase it!

Goals

• adapt plan due to meeting
• finish architecture
• start integration in saros

Activities

• preparation for implementation (requirements engineering)
• worked on implementation
• adapted plan

Results

• architecture and modules, see ThesisDPPXIIIProgramming
• started to code (see my repository)
  • ported prototype to new architecture
  • local testing via piped streams possible

Problems

• still some open questions for architecture
  • who controls when a frame will be rendered, encoder or connectionmanager?
  • what is needed at clients side to initiate and handle connections?
    • need some details concerning saros, should be done this week
  • how can i handle configurations?
    • will try Apache Commons Configuration
      • does it fit in eclipse?

Comments

Goals

• integrate into saros
  • view for clients player
  • bytestreams for connection between two users

Activities

• programmed feature
  • startup with saros
  • get a network stream

Results

• programming
  • hooked into picocotainer
  • tried to get network stream
• entered tests 3.2 - 3.7 in testlink

Problems

• is not easy to get network stream
  • find a way to get one via jingle, but this seems not to be accepted → meeting tuesday

Comments

Goals

• find solution for network architecture (meeting tuesday)
  • let saros be packetbased, wrap a stream with them
  • get a real stream via jingle/socks
  • not completely my part, sandor and henning have to help me
• start ui
  • player
  • session initiation, negotiation

Activities

• worked on streaming with saros
• assisted releasemanger
• tested saros for release

Results

• developed framework for streambased services
  • simple filetransfer-test worked

Problems

Comments

Goals

• test streaming with video, finish it completely
• start ui stuff

Activities

• worked at our new streaming interface
• played a bit with swt and eclipse views
• implemented file sending based on streaming

Results

• streaming: improved it
  • performance (chunkSize and maximalDelay)
  • reliability, send packets same order they arrive
  • introduced soft stop
• UI
  • created first view (canvas with simple statusbar)
  • discovered swt: widgets, layouts, …

Problems

• not sure whether streaming is now reliable enough... spend already a lot of time there, but sometimes strange errors occur

Comments

• don't get so far to test videosharing with stream interface

Goals

• integrate view into videosharing
• create a StreamService for video, test it in saros

Activities

• worked on view for playing video
• implemented example service for sending single files in a session
• improved streaming
• integration of videosharing-prototype into saros

Results

• videosharing
  • created branch, moved classes
  • created simple view for showing video with canvas and statusbar
• streaming
  • can add serialized objects to metapackets
  • developed improving concepts
    • streams need to be closed
    • output should block when input is not reading
• file sending
  • show speed in task
  • cancellable

Problems

• videoplayerview is swt, but images are awt: need to embed an awt canvas
• sometimes streaming hangs without obvious reason, need to figure out

Comments

Goals

• improve streaming (s.a.)
  • esp. robustness (errorhandling, disposing)
• make videosharing work in saros
  • embed awt-canvas in player
  • create preferences (pages)
  • catch input in player's canvas, send them to host

Activities

• finish screensharing and streaming for release
• documented state of work in wiki
• write paper about technical realization

Results

• screensharing
  • disposing
  • fast awt-canvas for displaying video
  • catch input in videoplayer and send to host
  • pure java encoder taken from smack-demo
• streaming
  • errorhandling/disposing
  • many fixes
• paper - 50% done

Problems

• alternative encoder is too slow, works only w. 1 FPS
  • try to optimize

Comments

• screensharing not ready for release
• streaming could be ready
  • christopher fixes binarychannel
  • must be reviewed (and afterwards fixed)
  • any feature uses it

Goals

• make features ready for use for release next week
  • optimize other encoder
  • UI
    • players toolbar
    • resizing
    • preference dialogues
• paper finished until wednesday

Activities

• writing mentioned paper
• make screensharing ready for release
• make streaming ready for release
• reviewed some patches for release

Results

• paper done
  • no feedback yet
• screensharing works
  • UI minor bugs

Problems

• seems that there's not enough to review both features
  • maybe not released or only experimental?
• alternative encoder
  • really bad performance, only 1 fps at low resolution, even at fast machines

Comments

• only core features in screensharing work

Goals

• release a new version for Saros
• finish streaming and sending file during session

Activities

• helped releasing and testing saros 10.1.29
• worked on streaming and screensharing

Results

• streaming
  • created patch for reviewing
• screensharing
  • worked towards creating patch, not done yet

Problems

Comments

Goals

• next weeks
  • get screensharing stable
  • focus on thesis
  • improve streaming according to reviews
• next week
  • relax @ holiday in austria

Activities

• worked on thesis
• improved streaming

Results

• created outline
• read and chose some papers, see ThesisDPPXIIILiteratur
• streaming
  • almost done, thread-pools are missing

Problems

Comments

Goals

• write parts about saros, pp, dpp and ca
• create new patch for streaming to be reviewed

Activities

• read some more papers
• prepared streaming for release

Results

• finished streaming patch, which will be reviewed for release

Problems

Comments

• ill

Goals

• get better