Method MakeAudioDeviceList

src/backends/RtAudio/AudioDevice_RtAudio.cpp:24–76

////////////////////////////////////////////////////

std::vector<AudioDeviceInfo> AudioDevice::MakeAudioDeviceList()
{
    std::vector<std::string> rt_audio_apis{
        "unspecified",
        "linux_alsa",
        "linux_pulse",
        "linux_oss",
        "unix_jack",
        "macos_coreaudio",
        "windows_wasapi",
        "windows_asio",
        "windows_directsound",
        "rtaudio_dummy"};

    RtAudio rt;
    if (rt.getDeviceCount() <= 0) throw std::runtime_error("no rtaudio devices available!");

    const auto api_enum = rt.getCurrentApi();
    LOG_INFO("using rtaudio api %s", rt_audio_apis[static_cast<int>(api_enum)].c_str());

    auto to_flt_vec = [](const std::vector<unsigned int> & vec) {
        std::vector<float> result;
        for (auto & i : vec) result.push_back(static_cast<float>(i));
        return result;
    };

    std::vector<AudioDeviceInfo> devices;
    for (uint32_t i = 0; i < rt.getDeviceCount(); ++i)
    {
        RtAudio::DeviceInfo info = rt.getDeviceInfo(i);

        if (info.probed)
        {
            AudioDeviceInfo lab_device_info;
            lab_device_info.index = i;
            lab_device_info.identifier = info.name;
            lab_device_info.num_output_channels = info.outputChannels;
            lab_device_info.num_input_channels = info.inputChannels;
            lab_device_info.supported_samplerates = to_flt_vec(info.sampleRates);
            lab_device_info.nominal_samplerate = static_cast<float>(info.preferredSampleRate);
            lab_device_info.is_default_output = info.isDefaultOutput;
            lab_device_info.is_default_input = info.isDefaultInput;

            devices.push_back(lab_device_info);
        }
        else
        {
            LOG_ERROR("probing failed %s", info.name.c_str());
        }
    }

    return devices;
}

AudioDeviceIndex AudioDevice::GetDefaultOutputAudioDeviceIndex() noexcept
{