• Independent 64-bit Windows exe, although intended to cooperate with QIRX.
• Written in C# (.NET framework 4.5.2, from V2 in .net5 ), cooperating with libfaad via P/Invoke.
• Receives raw AAC frames (with ASC headers) and/or commands from QIRX and creates PCM16 samples for PortAudio, as well as status responses returned via UDP.
• Uses the UDP ports: 8766, 8767, 8768, 8769.
• Uses the libfaad2 library as AAC decoder.
• To work together with QIRX, all binaries must be contained in the qirx_audio subdirectory of the QIRX runtime. When using the QIRX installer for Windows, this is already prepared.

• net5 Version
• Change from ADTS to ASC headers.
• Now features PortAudio as its audio engine.
• With the #define LINUX, it works also on Linux (tested on Debian 11.1). Identical codebase.

• Program structure reorganized, due to problems in Linux on slower machines.

• In VisualStudio, search for //#define LINUX and un-comment it.
• Do a "Rebuild All",
• On a Windows Command Line, run the script "build_qirxAudioLinux.bat" (without the quotation marks),
• This will produce the executable file qirx_audio (sic, without extension)
• In Debian, copy it to your directory of choice.
• Make sure that in the Linux search path for shared libraries the following libraries are present:
  • libportaudio.so.2
  • libfaad.so
• Run ./qirx_audio

Please note that the installation of net5 on Debian is NOT necessary, as the qirx_audio is self-contained (the reason for its size).

PortAudio P/Invoke interfacing based on work by Atsushi Eno, https://github.com/atsushieno/portaudio-sharp