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PortAudio: PaHostApiInfo Struct Reference
http://www.portaudio.com/docs/v19-doxydocs/structPaHostApiInfo.html#:~:text=The%20default%20output%20device%20for%20this%20host%20API.,available.%20Definition%20at%20line%20322%20of%20file%20portaudio.h.
c - Port Audio:How to solve the error of finding default ...
https://stackoverflow.com/questions/35967529/port-audiohow-to-solve-the-error-of-finding-default-devices-in-portaudiowindow
You can do this by printing the result of a call to Pa_GetDeviceCount(), or you can compile and run examples/pa_devs.c. pa_devswill give you the list of devices that PortAudio has detected. If the list is non-empty you can try to manually substitute the device index into outputParameters.device. However, if there is no default device available then I suspect that …
PortAudio Panic and No Devices Found - Eddy Luten
https://eddyluten.com/portaudio-panic-and-no-devices-found
PortAudio Panic and No Devices Found. Feb 14, 2017. Leaving this here for the poor souls on Linux systems that run into errors accessing the default input or output devices using PortAudio and get nothing back. Maybe you’re using rust-portaudio and your application panics after accessing default_output_device or default_intput_device even though you clearly …
PortAudio: portaudio.h File Reference
http://files.portaudio.com/docs/v19-doxydocs/portaudio_8h.html
The default output device index for the default host API, or paNoDevice if no default output device is available or an error was encountered. Note On the PC, the user can specify a default device by setting an environment variable. For example, to use device #1. set PA_RECOMMENDED_OUTPUT_DEVICE=1
PortAudio: Opening a Stream Using Defaults
http://files.portaudio.com/docs/v19-doxydocs/open_default_stream.html
PortAudio. The next step is to open a stream, which is similar to opening a file. You can specify whether you want audio input and/or output, how many channels, the data format, sample rate, etc. Opening a ''default'' stream means opening the default input and output devices, which saves you the trouble of getting a list of devices and choosing one from the list.
PortAudio: PaHostApiInfo Struct Reference
http://www.portaudio.com/docs/v19-doxydocs/structPaHostApiInfo.html
The default output device for this host API. The value will be a device index ranging from 0 to ( Pa_GetDeviceCount () -1), or paNoDevice if no default output device is available. Definition at line 322 of file portaudio.h. int PaHostApiInfo::deviceCount. The number of devices belonging to …
PortAudio: Blocking Read/Write Functions
http://portaudio.com/docs/v19-doxydocs/blocking_read_write.html
The example below, excepted from patest_read_write_wire.c, shows how to open the default device, and pass data from its input to its output for a set period of time. Note that we use the default high latency values to help avoid underruns since we are usually reading and writing audio data from a relatively low priority thread, and there is ...
an Open-Source Cross-Platform Audio API - PortAudio
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.
PyAudio Documentation — PyAudio 0.2.11 documentation
https://people.csail.mit.edu/hubert/pyaudio/docs/
output_device – The output device index. Specify None (default) for half-duplex input-only streams. output_channels – The desired number of output channels. Ignored if input_device is not specified (or None). output_format – PortAudio Sample Format constant. Return type: bool. Raises: ValueError – tuple containing (error string, PortAudio Error Code).
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