Add support for notification when audio devices change on macOS

This required some deep digging, as apparently the AVAudioSession doesn't
exist on macOS.

Change-Id: Ic47c6bacbfc1b0eb1f9f451fc63f7e910ac2953d
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/examples/multimedia/audiodevices/audiodevices.h b/examples/multimedia/audiodevices/audiodevices.h
index 85ea828ef..3654adbde 100644
--- a/examples/multimedia/audiodevices/audiodevices.h
+++ b/examples/multimedia/audiodevices/audiodevices.h
@@ -74,8 +74,10 @@ public:
 private:
     QAudioDeviceInfo m_deviceInfo;
     QAudioFormat m_settings;
+    QAudio::Mode m_mode = QAudio::AudioInput;
 
 private slots:
+    void updateAudioDevices();
     void modeChanged(int idx);
     void deviceChanged(int idx);
     void sampleRateChanged(int idx);