Warn when setting a new audio input/output device fails

Change-Id: Ied8fb709e9bcc3003f54c807ea83dca0a924eb78
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit 663dc4ee5ce1a4b76617a7c9545d1f13820fcefe)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

2 files changed, 10 insertions, 2 deletions

diff --git a/src/multimedia/platform/gstreamer/common/qgstreameraudioinput.cpp b/src/multimedia/platform/gstreamer/common/qgstreameraudioinput.cpp
index cd1233c1d..dbe0997fa 100644
--- a/src/multimedia/platform/gstreamer/common/qgstreameraudioinput.cpp
+++ b/src/multimedia/platform/gstreamer/common/qgstreameraudioinput.cpp
@@ -111,9 +111,13 @@ void QGstreamerAudioInput::setAudioDevice(const QAudioDevice &device)
     auto *deviceInfo = static_cast<const QGStreamerAudioDeviceInfo *>(m_audioDevice.handle());
     if (deviceInfo && deviceInfo->gstDevice)
         newSrc = gst_device_create_element(deviceInfo->gstDevice, "audiosrc");
+    else
+        qCWarning(qLcMediaAudioInput) << "Invalid audio device";
 
-    if (newSrc.isNull())
+    if (newSrc.isNull()) {
+        qCWarning(qLcMediaAudioInput) << "Failed to create a gst element for the audio device, using a default audio source";
         newSrc = QGstElement("autoaudiosrc", "audiosrc");
+    }
 
     // FIXME: most probably source can be disconnected outside of idle probe
     audioSrc.staticPad("src").doInIdleProbe([&](){
diff --git a/src/multimedia/platform/gstreamer/common/qgstreameraudiooutput.cpp b/src/multimedia/platform/gstreamer/common/qgstreameraudiooutput.cpp
index 6338c1ee0..b9a637975 100644
--- a/src/multimedia/platform/gstreamer/common/qgstreameraudiooutput.cpp
+++ b/src/multimedia/platform/gstreamer/common/qgstreameraudiooutput.cpp
@@ -101,9 +101,13 @@ void QGstreamerAudioOutput::setAudioDevice(const QAudioDevice &info)
     auto *deviceInfo = static_cast<const QGStreamerAudioDeviceInfo *>(m_audioOutput.handle());
     if (deviceInfo && deviceInfo->gstDevice)
         newSink = gst_device_create_element(deviceInfo->gstDevice , "audiosink");
+    else
+        qCWarning(qLcMediaAudioOutput) << "Invalid audio device";
 
-    if (newSink.isNull())
+    if (newSink.isNull()) {
+        qCWarning(qLcMediaAudioOutput) << "Failed to create a gst element for the audio device, using a default audio sink";
         newSink = QGstElement("autoaudiosink", "audiosink");
+    }
 
     audioVolume.staticPad("src").doInIdleProbe([&](){
         audioVolume.unlink(audioSink);