11 - Programming Realtime Audio

See video: https://youtu.be/h_UvVOu12aQ

The basic concept of realtime audio we need for programming audio processing and sound generating plugins. Also showing the pitfalls for programming realtime audio plugins. Last video of the first tutorial block. Will be continued in 2022.

Topics:

• What is realtime?
• Principle of audio signal routing
• Realtime guarantee
• Violating realtime
• Not realtime-safe:
  • User interactions
  • Web access
  • Other I/O
  • Files, devices, pipes, sockets, system calls, ...
  • Heap memory allocation and deallocation
    • malloc, calloc, free, new, delete, ...
    • C++ strings, streams, exceptions, STL containers (except std::array), ...
  • Process / thread locks
• LV2 realtime thread (connect_port, run)
• Preview: LV2 worker extension