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PortAudio: PortAudio Tutorials

http://files.portaudio.com/docs/v19-doxydocs/tutorial_start.html#:~:text=Below%20are%20the%20steps%20to%20writing%20a%20PortAudio,be%20called%20repeatedly%20by%20PA%20in%20the%20background.

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PortAudio: Writing a Callback Function

http://www.portaudio.com/docs/v19-doxydocs/writing_a_callback.html

The "callback" is a function that is called by the PortAudio engine whenever it has captured audio data, or when it needs more audio data for output. Before we begin, it's important to realize that the callback is a delicate place.

PortAudio - an Open-Source Cross-Platform Audio API

http://portaudio.com/

PortAudio provides a very simple API for recording and/or playing sound using a simple callback function or a blocking read/write interface. Example programs are included that play sine waves, process audio input (guitar fuzz), record and playback audio, list available audio devices, etc. The Portaudio Wiki is maintained by the community of PortAudio developers. It has the most up-to …

c++ - Portaudio Callback Function Example - Stack Overflow

https://stackoverflow.com/questions/26172522/portaudio-callback-function-example

Many apps may want to use paFramesPerBufferUnspecified, which tells PortAudio to pick the best, possibly changing, buffer size.*/ patestCallback, /* this is your callback function */ &paData ); /*This is a pointer that will be passed to your callback*/

PortAudio Tutorial - Columbia University

https://www.ee.columbia.edu/~mim/meap/paMat/portaudio_v18_1/docs/pa_tut_callback.html

It is a function that is called by the PortAudio engine whenever it has captured audio data, or when it needs more audio data for output. Your callback function is often called by an interrupt, or low level process so you should not do any complex system activities like allocating memory, or reading or writing files, or printf ().

GitHub - PortAudio/portaudio: PortAudio is a cross ...

https://github.com/PortAudio/portaudio

PortAudio is a portable audio I/O library designed for cross-platform support of audio. It uses either a callback mechanism to request audio processing, or blocking read/write calls to buffer data between the native audio subsystem and the client.

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