Add audio listeners for macOS and cleanup code

QMediaDevices doc says:
  The default device can change during the runtime of the application.
  The audioInputsChanged/audioOutputsChanged signal
  is emitted in this case.

What's done:

- add listening of properties kAudioHardwarePropertyDefaultOutputDevice
  and kAudioHardwarePropertyDefaultInputDevice in order to handle
  default input/output changes.
- cleanup a mess of defines in qdarwinmediadevices.mm
- some refactoring with code improving.

Task-number: QTBUG-108020
Pick-to: 6.4
Change-Id: I35aec4f9da9755036141a70f5ce48f6db73d8148
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars@knoll.priv.no>

1 files changed, 6 insertions, 2 deletions

diff --git a/tests/auto/integration/qaudiodevice/tst_qaudiodevice.cpp b/tests/auto/integration/qaudiodevice/tst_qaudiodevice.cpp
index e4554084a..0bdbf88dd 100644
--- a/tests/auto/integration/qaudiodevice/tst_qaudiodevice.cpp
+++ b/tests/auto/integration/qaudiodevice/tst_qaudiodevice.cpp
@@ -52,7 +52,9 @@ void tst_QAudioDevice::checkAvailableDefaultInput()
     // Only perform tests if audio input device exists!
     QList<QAudioDevice> devices = QMediaDevices::audioInputs();
     if (devices.size() > 0) {
-        QVERIFY(!QMediaDevices::defaultAudioInput().isNull());
+        auto defaultInput = QMediaDevices::defaultAudioInput();
+        QVERIFY(!defaultInput.isNull());
+        QCOMPARE(std::count(devices.begin(), devices.end(), defaultInput), 1);
     }
 }
 
@@ -61,7 +63,9 @@ void tst_QAudioDevice::checkAvailableDefaultOutput()
     // Only perform tests if audio input device exists!
     QList<QAudioDevice> devices = QMediaDevices::audioOutputs();
     if (devices.size() > 0) {
-        QVERIFY(!QMediaDevices::defaultAudioOutput().isNull());
+        auto defaultOutput = QMediaDevices::defaultAudioOutput();
+        QVERIFY(!defaultOutput.isNull());
+        QCOMPARE(std::count(devices.begin(), devices.end(), defaultOutput), 1);
     }
 }