Method open

app/src/IO/Drivers/Audio.cpp:501–545

* @brief Opens the audio I/O device with the current configuration. */

 * @brief Opens the audio I/O device with the current configuration.
 */
bool IO::Drivers::Audio::open(const QIODevice::OpenMode mode)
{
  if (!m_init || m_isOpen || !configurationOk())
    return false;

  m_config = ma_device_config_init(ma_device_type_duplex);

  // clang-format off
  m_config.pUserData = this;
  m_config.dataCallback = &Audio::callback;
  m_config.sampleRate = m_inputCapabilities[m_selectedInputDevice].supportedSampleRates[m_selectedSampleRate];
  // clang-format on

  m_config.noClip                    = MA_FALSE;
  m_config.noDisableDenormals        = MA_FALSE;
  m_config.noFixedSizedCallback      = MA_TRUE;
  m_config.noPreSilencedOutputBuffer = MA_FALSE;

  applyPlatformAudioConfig();
  configureCaptureFormat(mode);
  if (!configurePlaybackFormat(mode))
    return false;

  m_rtCaptureFormat.store(m_config.capture.format, std::memory_order_relaxed);
  m_rtCaptureChannels.store(m_config.capture.channels, std::memory_order_relaxed);
  m_rtPlaybackFormat.store(m_config.playback.format, std::memory_order_relaxed);
  m_rtPlaybackChannels.store(m_config.playback.channels, std::memory_order_release);

  std::memset(&m_device, 0, sizeof(m_device));
  if (ma_device_init(&m_context, &m_config, &m_device) != MA_SUCCESS) {
    qWarning() << "Failed to initialize miniaudio device.";
    return false;
  }

  if (ma_device_start(&m_device) != MA_SUCCESS) {
    qWarning() << "Failed to start miniaudio device.";
    ma_device_uninit(&m_device);
    return false;
  }

  startInputWorker();

  m_isOpen = true;
  return true;
}

/**
 * @brief Applies platform-specific miniaudio backend tweaks to m_config.