We have collected the most relevant information on Portaudio Set Hostapi. Open the URLs, which are collected below, and you will find all the info you are interested in.
PortAudio: Source code for specific Host APIs
http://portaudio.com/docs/v19-doxydocs-dev/group__hostapi__src.html
Source code for specific Host APIs. Files: file pa_linux_alsa.c file pa_linux_asihpi.c Host API implementation supporting AudioScience cards via the Linux HPI interface.
PortAudio: pa_hostapi.h Source File
http://portaudio.com/docs/v19-doxydocs-dev/pa__hostapi_8h_source.html
33 * the PortAudio community also makes the following non-binding requests: 34 ... 109 /* Set default values for Unix based APIs. */ 110 ... (struct PaUtilHostApiRepresentation *hostApi, PaStream **stream, const PaStreamParameters *inputParameters, const PaStreamParameters *outputParameters, double sampleRate, unsigned long framesPerCallback ...
audio - how to install portaudio on pi properly - Stack ...
https://stackoverflow.com/questions/59006083/how-to-install-portaudio-on-pi-properly
Your first link correctly identifies a bug in portaudio, but the fix is incomplete. I forked the portaudio library and created a patch to fix this.
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