如何在 Linux 系统中检索音频输入和 output 设备名称？

Question

I am working with Qt5 (C++) on Debian Linux. How can I retrieve the audio input and output device names of the system the program will run?

Answer 1

Here's an example inspired by the example in the documentation for QAudioDeviceInfo :

#include <QtMultimedia/qaudiodeviceinfo.h>

#include <iostream>

int main() {
    // fetch info about all output devices
    const auto deviceInfos = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);

    // display the audio output devices names
    for(const QAudioDeviceInfo& deviceInfo : deviceInfos)
        std::cout << "Device name: " << deviceInfo.deviceName().toStdString() << '\n';
}

Compiled with:

-fPIC $(pkg-config --cflags --libs Qt5Multimedia)

( -fPIC may not be necessary on your system. It depends on how the Qt libs were compiled)