====== Architecture, hacking ======

Branch "refactor":

  * Multi-threaded application using C++11 threads.
  * CmdParser class that eats commands and executes various things (updates Gconf_s/Compose_s)
  * spawns other threads and passes three parameters to them:
    * Gconf_s - contains variables like framerate and resolution
    * compose - vector of pointers to Compose_s, each element describes one signal source
    * compose_mtx - mutex to protect that vector
  * data:
    * audio samples are read into queue
    * video samples into preallocated vector, because there are 100 MB/s of it and I don't want to have allocations and deallocations in queue
  * AudioReader.cpp, VideoReader.cpp - reads audio/video into "compose"
    * each signal source has one reader thread
  * AudioStreamer.cpp, VideoStreamer.cpp - reads "compose", combines frames and outputs them