wasm: fix QAudioInput for wasm

Don't remove devices that were previously found.
Temporarily make webaudio devices not the default

Pick-to: 6.5
Fixes: QTBUG-115075
Change-Id: Iedaf53858c3b7dddc2cf1eb33a855989ca5793d9
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
(cherry picked from commit 0272a7c1a68ed8c7abf46fe2bdc2abbba4ace66a)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

2 files changed, 13 insertions, 10 deletions

diff --git a/src/multimedia/wasm/qwasmaudiosource.cpp b/src/multimedia/wasm/qwasmaudiosource.cpp
index 9f51d7077..a80b4c2d7 100644
--- a/src/multimedia/wasm/qwasmaudiosource.cpp
+++ b/src/multimedia/wasm/qwasmaudiosource.cpp
@@ -69,15 +69,16 @@ QWasmAudioSource::QWasmAudioSource(const QByteArray &device , QObject *parent)
       m_name(device),
       m_timer(new QTimer(this))
 {
-    aldata = new ALData();
-    connect(m_timer, &QTimer::timeout, this, [this](){
-        Q_ASSERT(m_running);
-        if (m_pullMode)
-            writeBuffer();
-        else
-            if (bytesReady() > 0)
+    if (device.contains("Emscripten")) {
+        aldata = new ALData();
+        connect(m_timer, &QTimer::timeout, this, [this](){
+            Q_ASSERT(m_running);
+            if (m_pullMode)
+                writeBuffer();
+            else if (bytesReady() > 0)
                 emit m_device->readyRead();
-    });
+        });
+    }
 }
 
 void QWasmAudioSource::start(QIODevice *device)
@@ -148,8 +149,10 @@ void QWasmAudioSource::start(bool mode)
         m_tmpData = new char[m_bufferSize];
     else
         m_tmpData = nullptr;
-    m_timer->setInterval(m_format.durationForBytes(m_bufferSize) / 3'000);
+    m_timer->setInterval(m_format.durationForBytes(m_bufferSize) / 3000);
+    m_timer->start();
 
+    alcGetError(aldata->device); // clear error state
     aldata->device = alcCaptureOpenDevice(m_name.data(), m_format.sampleRate(), format,
                                           m_format.framesForBytes(m_bufferSize));
 
@@ -167,7 +170,6 @@ void QWasmAudioSource::start(bool mode)
     }
     m_processed = 0;
     m_running = true;
-    m_timer->start();
 }
 
 void QWasmAudioSource::stop()
diff --git a/src/multimedia/wasm/qwasmmediadevices.cpp b/src/multimedia/wasm/qwasmmediadevices.cpp
index 2f4ff687f..e985654ac 100644
--- a/src/multimedia/wasm/qwasmmediadevices.cpp
+++ b/src/multimedia/wasm/qwasmmediadevices.cpp
@@ -243,6 +243,7 @@ void QWasmMediaDevices::getMediaDevices()
                                            std::move(enumerateDevicesCallback));
                 });
     }
+
 }
 
 void QWasmMediaDevices::getOpenALAudioDevices()