Add a volume (gain) property to QAudioInput.

Only implemented for PulseAudio so far, but the API does explain that
it's optional.

Change-Id: I4543a1c81d810fe92bb08f1ed13f3a3534a371e4
Reviewed-by: Ling Hu <ling.hu@nokia.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp b/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
index fafb7e40e..81d0b13a1 100755
--- a/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
+++ b/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
@@ -101,6 +101,8 @@ private slots:
 
     void reset();
 
+    void volume();
+
 private:
     typedef QSharedPointer<QFile> FilePtr;
 
@@ -840,6 +842,31 @@ void tst_QAudioInput::reset()
     }
 }
 
+void tst_QAudioInput::volume()
+{
+    const qreal half(0.5f);
+    const qreal one(1.0f);
+    // Hard to automatically test, but we can test the get/set a little
+    for (int i=0; i < testFormats.count(); i++) {
+        QAudioInput audioInput(testFormats.at(i), this);
+
+        qreal volume = audioInput.volume();
+        audioInput.setVolume(half);
+        QVERIFY(qFuzzyCompare(audioInput.volume(), half) || qFuzzyCompare(audioInput.volume(), one));
+
+        // Wait a while to see if this changes
+        QTest::qWait(500);
+        QVERIFY(qFuzzyCompare(audioInput.volume(), half) || qFuzzyCompare(audioInput.volume(), one));
+
+        audioInput.setVolume(volume);
+        QVERIFY(qFuzzyCompare(audioInput.volume(), volume));
+
+        // Wait a while to see if this changes
+        QTest::qWait(500);
+        QVERIFY(qFuzzyCompare(audioInput.volume(), volume));
+    }
+}
+
 QTEST_MAIN(tst_QAudioInput)
 
 #include "tst_qaudioinput.moc"