Fix some compiler warnings.

As it turns out, we had an overloaded virtual from an earlier era,
with the extra parameter never used.  So cleaning that up was a
bonus to remove the compiler warning.

Change-Id: I780287f8a5d2b0a1ec84ec62c88ba50e051f372b
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

13 files changed, 39 insertions, 36 deletions

diff --git a/doc/src/snippets/multimedia-snippets/audio.cpp b/doc/src/snippets/multimedia-snippets/audio.cpp
index eb329a8d8..d25c05efa 100644
--- a/doc/src/snippets/multimedia-snippets/audio.cpp
+++ b/doc/src/snippets/multimedia-snippets/audio.cpp
@@ -114,15 +114,21 @@ void AudioInputExample::stopRecording()
 void AudioInputExample::stateChanged(QAudio::State newState)
 {
     switch (newState) {
-    case QAudio::StoppedState:
-        if (audio->error() != QAudio::NoError) {
-            // Error handling
-        } else {
-            // Finished recording
-        }
-        break;
-
-        // ...
+        case QAudio::StoppedState:
+            if (audio->error() != QAudio::NoError) {
+                // Error handling
+            } else {
+                // Finished recording
+            }
+            break;
+
+        case QAudio::ActiveState:
+            // Started recording - read from IO device
+            break;
+
+        default:
+            // ... other cases as appropriate
+            break;
     }
 }
 //! [Audio input state changed]
@@ -189,7 +195,9 @@ void AudioOutputExample::stateChanged(QAudio::State newState)
             }
             break;
 
-            // ...
+        default:
+            // ... other cases as appropriate
+            break;
     }
 }
 //! [Audio output state changed]
diff --git a/examples/audiodevices/audiodevices.cpp b/examples/audiodevices/audiodevices.cpp
index fb7677632..d8be77f2c 100644
--- a/examples/audiodevices/audiodevices.cpp
+++ b/examples/audiodevices/audiodevices.cpp
@@ -58,6 +58,8 @@ QString toString(QAudioFormat::SampleType sampleType)
     case QAudioFormat::Float:
         result = "Float";
         break;
+    case QAudioFormat::Unknown:
+        result = "Unknown";
     }
     return result;
 }
diff --git a/examples/spectrum/app/waveform.cpp b/examples/spectrum/app/waveform.cpp
index 420a01eb0..744c98063 100644
--- a/examples/spectrum/app/waveform.cpp
+++ b/examples/spectrum/app/waveform.cpp
@@ -393,6 +393,7 @@ void Waveform::paintTile(int index)
         const int offset = reinterpret_cast<const char*>(ptr) - m_buffer.constData();
         Q_ASSERT(offset >= 0);
         Q_ASSERT(offset < m_bufferLength);
+        Q_UNUSED(offset);
 
         const qint16 pcmValue = *ptr;
         const qreal realValue = pcmToReal(pcmValue);
diff --git a/examples/spectrum/app/wavfile.h b/examples/spectrum/app/wavfile.h
index cd4988d23..eb867241d 100644
--- a/examples/spectrum/app/wavfile.h
+++ b/examples/spectrum/app/wavfile.h
@@ -51,6 +51,7 @@ class WavFile : public QFile
 public:
     WavFile(QObject *parent = 0);
 
+    using QFile::open;
     bool open(const QString &fileName);
     const QAudioFormat &fileFormat() const;
     qint64 headerLength() const;
diff --git a/examples/videowidget/videowidgetsurface.cpp b/examples/videowidget/videowidgetsurface.cpp
index 0aafc1e2b..da94763f7 100644
--- a/examples/videowidget/videowidgetsurface.cpp
+++ b/examples/videowidget/videowidgetsurface.cpp
@@ -69,11 +69,8 @@ QList<QVideoFrame::PixelFormat> VideoWidgetSurface::supportedPixelFormats(
 //! [0]
 
 //! [1]
-bool VideoWidgetSurface::isFormatSupported(
-        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const
+bool VideoWidgetSurface::isFormatSupported(const QVideoSurfaceFormat &format) const
 {
-    Q_UNUSED(similar);
-
     const QImage::Format imageFormat = QVideoFrame::imageFormatFromPixelFormat(format.pixelFormat());
     const QSize size = format.frameSize();
 
diff --git a/examples/videowidget/videowidgetsurface.h b/examples/videowidget/videowidgetsurface.h
index d25399e07..ebd46ebf6 100644
--- a/examples/videowidget/videowidgetsurface.h
+++ b/examples/videowidget/videowidgetsurface.h
@@ -55,7 +55,7 @@ public:
 
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
-    bool isFormatSupported(const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format) const;
 
     bool start(const QVideoSurfaceFormat &format);
     void stop();
diff --git a/src/multimediawidgets/qpaintervideosurface.cpp b/src/multimediawidgets/qpaintervideosurface.cpp
index c0e1c3925..672a103de 100644
--- a/src/multimediawidgets/qpaintervideosurface.cpp
+++ b/src/multimediawidgets/qpaintervideosurface.cpp
@@ -70,8 +70,7 @@ public:
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType) const;
 
-    bool isFormatSupported(
-            const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format) const;
 
     QAbstractVideoSurface::Error start(const QVideoSurfaceFormat &format);
     void stop();
@@ -117,8 +116,7 @@ QList<QVideoFrame::PixelFormat> QVideoSurfaceGenericPainter::supportedPixelForma
     return QList<QVideoFrame::PixelFormat>();
 }
 
-bool QVideoSurfaceGenericPainter::isFormatSupported(
-        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *) const
+bool QVideoSurfaceGenericPainter::isFormatSupported(const QVideoSurfaceFormat &format) const
 {
     switch (format.handleType()) {
     case QAbstractVideoBuffer::QPixmapHandle:
@@ -246,8 +244,7 @@ public:
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType) const;
 
-    bool isFormatSupported(
-            const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format) const;
 
     QAbstractVideoSurface::Error setCurrentFrame(const QVideoFrame &frame);
 
@@ -327,8 +324,7 @@ QList<QVideoFrame::PixelFormat> QVideoSurfaceGLPainter::supportedPixelFormats(
     return QList<QVideoFrame::PixelFormat>();
 }
 
-bool QVideoSurfaceGLPainter::isFormatSupported(
-        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *) const
+bool QVideoSurfaceGLPainter::isFormatSupported(const QVideoSurfaceFormat &format) const
 {
     if (format.frameSize().isEmpty()) {
         return false;
@@ -1349,13 +1345,12 @@ QList<QVideoFrame::PixelFormat> QPainterVideoSurface::supportedPixelFormats(
 
 /*!
 */
-bool QPainterVideoSurface::isFormatSupported(
-        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const
+bool QPainterVideoSurface::isFormatSupported(const QVideoSurfaceFormat &format) const
 {
     if (!m_painter)
         const_cast<QPainterVideoSurface *>(this)->createPainter();
 
-    return m_painter->isFormatSupported(format, similar);
+    return m_painter->isFormatSupported(format);
 }
 
 /*!
diff --git a/src/multimediawidgets/qpaintervideosurface_mac.mm b/src/multimediawidgets/qpaintervideosurface_mac.mm
index a3c55ca4b..a741d9eea 100644
--- a/src/multimediawidgets/qpaintervideosurface_mac.mm
+++ b/src/multimediawidgets/qpaintervideosurface_mac.mm
@@ -97,8 +97,7 @@ QList<QVideoFrame::PixelFormat> QVideoSurfaceCoreGraphicsPainter::supportedPixel
         : QList<QVideoFrame::PixelFormat>();
 }
 
-bool QVideoSurfaceCoreGraphicsPainter::isFormatSupported(
-        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *) const
+bool QVideoSurfaceCoreGraphicsPainter::isFormatSupported(const QVideoSurfaceFormat &format) const
 {
     return m_supportedHandles.contains(format.handleType())
             && m_imagePixelFormats.contains(format.pixelFormat())
diff --git a/src/multimediawidgets/qpaintervideosurface_mac_p.h b/src/multimediawidgets/qpaintervideosurface_mac_p.h
index 6f78c8f2a..6d93381ab 100644
--- a/src/multimediawidgets/qpaintervideosurface_mac_p.h
+++ b/src/multimediawidgets/qpaintervideosurface_mac_p.h
@@ -73,8 +73,7 @@ public:
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType) const;
 
-    bool isFormatSupported(
-            const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format) const;
 
     QAbstractVideoSurface::Error start(const QVideoSurfaceFormat &format);
     void stop();
diff --git a/src/multimediawidgets/qpaintervideosurface_p.h b/src/multimediawidgets/qpaintervideosurface_p.h
index 57d4bb69a..341f940e3 100644
--- a/src/multimediawidgets/qpaintervideosurface_p.h
+++ b/src/multimediawidgets/qpaintervideosurface_p.h
@@ -82,8 +82,7 @@ public:
     virtual QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType) const = 0;
 
-    virtual bool isFormatSupported(
-            const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const = 0;
+    virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;
 
     virtual QAbstractVideoSurface::Error start(const QVideoSurfaceFormat &format) = 0;
     virtual void stop() = 0;
@@ -108,8 +107,7 @@ public:
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(
             QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
 
-    bool isFormatSupported(
-            const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar = 0) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format) const;
 
     bool start(const QVideoSurfaceFormat &format);
     void stop();
diff --git a/src/plugins/pulseaudio/qaudioinput_pulse.cpp b/src/plugins/pulseaudio/qaudioinput_pulse.cpp
index 98925be1d..79d7b7e24 100644
--- a/src/plugins/pulseaudio/qaudioinput_pulse.cpp
+++ b/src/plugins/pulseaudio/qaudioinput_pulse.cpp
@@ -471,7 +471,7 @@ qint64 QPulseAudioInput::read(char *data, qint64 len)
         if (m_pullMode) {
             actualLength = m_audioSource->write(static_cast<const char *>(audioBuffer), readLength);
 
-            if (actualLength < readLength) {
+            if (actualLength < qint64(readLength)) {
                 pa_threaded_mainloop_unlock(pulseEngine->mainloop());
 
                 m_errorState = QAudio::UnderrunError;
@@ -489,7 +489,7 @@ qint64 QPulseAudioInput::read(char *data, qint64 len)
         qDebug() << "QPulseAudioInput::read -- wrote " << actualLength << " to client";
 #endif
 
-        if (actualLength < readLength) {
+        if (actualLength < qint64(readLength)) {
 #ifdef DEBUG_PULSE
             qDebug() << "QPulseAudioInput::read -- appending " << readLength - actualLength << " bytes of data to temp buffer";
 #endif
diff --git a/src/plugins/qt7/qt7movierenderer.mm b/src/plugins/qt7/qt7movierenderer.mm
index 95f45f0f3..afddd4dd4 100644
--- a/src/plugins/qt7/qt7movierenderer.mm
+++ b/src/plugins/qt7/qt7movierenderer.mm
@@ -401,6 +401,8 @@ void QT7MovieRenderer::setMovie(void *movie)
 
         setupVideoOutput();
     }
+#else
+    Q_UNUSED(movie);
 #endif
 }
 
diff --git a/tests/auto/unit/qmediaserviceprovider/tst_qmediaserviceprovider.cpp b/tests/auto/unit/qmediaserviceprovider/tst_qmediaserviceprovider.cpp
index 40ec395f0..d76bd92d5 100644
--- a/tests/auto/unit/qmediaserviceprovider/tst_qmediaserviceprovider.cpp
+++ b/tests/auto/unit/qmediaserviceprovider/tst_qmediaserviceprovider.cpp
@@ -112,6 +112,7 @@ public:
 
     QList<QByteArray> devices(const QByteArray &service) const
     {
+        Q_UNUSED(service);
         QList<QByteArray> res;
         return res;
     }