Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace.

Task-number: QTBUG-99313
Change-Id: I25cda1e10154e11a51a17c6ca2b47ce90b26f90e
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

12 files changed, 31 insertions, 31 deletions

diff --git a/src/multimedia/qmediastoragelocation.cpp b/src/multimedia/qmediastoragelocation.cpp
index 4363e06de..7b0433d8b 100644
--- a/src/multimedia/qmediastoragelocation.cpp
+++ b/src/multimedia/qmediastoragelocation.cpp
@@ -21,7 +21,7 @@ QDir QMediaStorageLocation::defaultDirectory(QStandardPaths::StandardLocation ty
     dirCandidates << QDir::currentPath();
     dirCandidates << QDir::tempPath();
 
-    for (const QString &path : qAsConst(dirCandidates)) {
+    for (const QString &path : std::as_const(dirCandidates)) {
         QDir dir(path);
         if (dir.exists() && QFileInfo(path).isWritable())
             return dir;
diff --git a/src/plugins/multimedia/ffmpeg/qffmpegclock.cpp b/src/plugins/multimedia/ffmpeg/qffmpegclock.cpp
index a3ca04d93..30e09a0a1 100644
--- a/src/plugins/multimedia/ffmpeg/qffmpegclock.cpp
+++ b/src/plugins/multimedia/ffmpeg/qffmpegclock.cpp
@@ -76,7 +76,7 @@ QFFmpeg::Clock::Type QFFmpeg::Clock::type() const
 
 QFFmpeg::ClockController::~ClockController()
 {
-    for (auto *p : qAsConst(m_clocks))
+    for (auto *p : std::as_const(m_clocks))
         p->setController(nullptr);
 }
 
@@ -149,7 +149,7 @@ void QFFmpeg::ClockController::syncTo(qint64 usecs)
         m_elapsedTimer.restart();
     }
 
-    for (auto *p : qAsConst(m_clocks))
+    for (auto *p : std::as_const(m_clocks))
         p->syncTo(usecs);
 }
 
@@ -166,7 +166,7 @@ void QFFmpeg::ClockController::setPlaybackRate(float rate)
         m_playbackRate = rate;
     }
 
-    for (auto *p : qAsConst(m_clocks))
+    for (auto *p : std::as_const(m_clocks))
         p->setPlaybackRate(rate, baseTime);
 }
 
@@ -186,7 +186,7 @@ void QFFmpeg::ClockController::setPaused(bool paused)
         }
     }
 
-    for (auto *p : qAsConst(m_clocks))
+    for (auto *p : std::as_const(m_clocks))
         p->setPaused(paused);
 }
 
diff --git a/src/plugins/multimedia/ffmpeg/qffmpegdecoder.cpp b/src/plugins/multimedia/ffmpeg/qffmpegdecoder.cpp
index 723f10a62..bcefcaeb2 100644
--- a/src/plugins/multimedia/ffmpeg/qffmpegdecoder.cpp
+++ b/src/plugins/multimedia/ffmpeg/qffmpegdecoder.cpp
@@ -157,15 +157,15 @@ void Demuxer::stopDecoding()
 int Demuxer::seek(qint64 pos)
 {
     QMutexLocker locker(&mutex);
-    for (StreamDecoder *d : qAsConst(streamDecoders)) {
+    for (StreamDecoder *d : std::as_const(streamDecoders)) {
         if (d)
             d->mutex.lock();
     }
-    for (StreamDecoder *d : qAsConst(streamDecoders)) {
+    for (StreamDecoder *d : std::as_const(streamDecoders)) {
         if (d)
             d->flush();
     }
-    for (StreamDecoder *d : qAsConst(streamDecoders)) {
+    for (StreamDecoder *d : std::as_const(streamDecoders)) {
         if (d)
             d->mutex.unlock();
     }
@@ -193,7 +193,7 @@ void Demuxer::sendFinalPacketToStreams()
 {
     if (m_isStopped.loadAcquire())
         return;
-    for (auto *streamDecoder : qAsConst(streamDecoders)) {
+    for (auto *streamDecoder : std::as_const(streamDecoders)) {
         qCDebug(qLcDemuxer) << "Demuxer: sending last packet to stream" << streamDecoder;
         if (!streamDecoder)
             continue;
@@ -211,7 +211,7 @@ void Demuxer::cleanup()
 {
     qCDebug(qLcDemuxer) << "Demuxer::cleanup";
 #ifndef QT_NO_DEBUG
-    for (auto *streamDecoder : qAsConst(streamDecoders)) {
+    for (auto *streamDecoder : std::as_const(streamDecoders)) {
         Q_ASSERT(!streamDecoder);
     }
 #endif
diff --git a/src/plugins/multimedia/ffmpeg/qv4l2camera.cpp b/src/plugins/multimedia/ffmpeg/qv4l2camera.cpp
index 0e708a642..36df8332b 100644
--- a/src/plugins/multimedia/ffmpeg/qv4l2camera.cpp
+++ b/src/plugins/multimedia/ffmpeg/qv4l2camera.cpp
@@ -261,7 +261,7 @@ void QV4L2CameraBuffers::release(int index)
 
 void QV4L2CameraBuffers::unmapBuffers()
 {
-    for (const auto &b : qAsConst(mappedBuffers))
+    for (const auto &b : std::as_const(mappedBuffers))
         munmap(b.data, b.size);
     mappedBuffers.clear();
 }
diff --git a/src/plugins/multimedia/gstreamer/common/qgstpipeline.cpp b/src/plugins/multimedia/gstreamer/common/qgstpipeline.cpp
index b2cfa79f8..f1ec37f22 100644
--- a/src/plugins/multimedia/gstreamer/common/qgstpipeline.cpp
+++ b/src/plugins/multimedia/gstreamer/common/qgstpipeline.cpp
@@ -51,7 +51,7 @@ public:
         Q_UNUSED(bus);
         QMutexLocker lock(&d->filterMutex);
 
-        for (QGstreamerSyncMessageFilter *filter : qAsConst(d->syncFilters)) {
+        for (QGstreamerSyncMessageFilter *filter : std::as_const(d->syncFilters)) {
             if (filter->processSyncMessage(QGstreamerMessage(message))) {
                 gst_message_unref(message);
                 return GST_BUS_DROP;
@@ -72,7 +72,7 @@ private Q_SLOTS:
     }
     void doProcessMessage(const QGstreamerMessage& msg)
     {
-        for (QGstreamerBusMessageFilter *filter : qAsConst(busFilters)) {
+        for (QGstreamerBusMessageFilter *filter : std::as_const(busFilters)) {
             if (filter->processBusMessage(msg))
                 break;
         }
diff --git a/src/plugins/multimedia/gstreamer/qgstreamerformatinfo.cpp b/src/plugins/multimedia/gstreamer/qgstreamerformatinfo.cpp
index fd759b1fe..538797cf8 100644
--- a/src/plugins/multimedia/gstreamer/qgstreamerformatinfo.cpp
+++ b/src/plugins/multimedia/gstreamer/qgstreamerformatinfo.cpp
@@ -254,7 +254,7 @@ QList<QGstreamerFormatInfo::CodecMap> QGstreamerFormatInfo::getMuxerList(bool de
             }
         }
         if (!audioCodecs.isEmpty() || !videoCodecs.isEmpty()) {
-            for (auto f : qAsConst(fileFormats)) {
+            for (auto f : std::as_const(fileFormats)) {
                 muxers.append({f, audioCodecs, videoCodecs});
                 if (f == QMediaFormat::MPEG4 && !fileFormats.contains(QMediaFormat::Mpeg4Audio)) {
                     muxers.append({QMediaFormat::Mpeg4Audio, audioCodecs, {}});
diff --git a/src/plugins/multimedia/gstreamer/qgstreamervideodevices.cpp b/src/plugins/multimedia/gstreamer/qgstreamervideodevices.cpp
index 2ef7215c1..44cb5a0ae 100644
--- a/src/plugins/multimedia/gstreamer/qgstreamervideodevices.cpp
+++ b/src/plugins/multimedia/gstreamer/qgstreamervideodevices.cpp
@@ -65,7 +65,7 @@ QList<QCameraDevice> QGstreamerVideoDevices::videoDevices() const
 {
     QList<QCameraDevice> devices;
 
-    for (auto *d : qAsConst(m_videoSources)) {
+    for (auto *d : std::as_const(m_videoSources)) {
         QGstStructure properties = gst_device_get_properties(d);
         if (!properties.isNull()) {
             QCameraDevicePrivate *info = new QCameraDevicePrivate;
diff --git a/src/plugins/multimedia/windows/evr/evrcustompresenter.cpp b/src/plugins/multimedia/windows/evr/evrcustompresenter.cpp
index d520584f7..742608f0f 100644
--- a/src/plugins/multimedia/windows/evr/evrcustompresenter.cpp
+++ b/src/plugins/multimedia/windows/evr/evrcustompresenter.cpp
@@ -482,14 +482,14 @@ HRESULT SamplePool::initialize(QList<IMFSample*> &samples)
         return MF_E_INVALIDREQUEST;
 
     // Move these samples into our allocated queue.
-    for (auto sample : qAsConst(samples)) {
+    for (auto sample : std::as_const(samples)) {
         sample->AddRef();
         m_videoSampleQueue.append(sample);
     }
 
     m_initialized = true;
 
-    for (auto sample : qAsConst(samples))
+    for (auto sample : std::as_const(samples))
         sample->Release();
     samples.clear();
     return S_OK;
@@ -499,7 +499,7 @@ HRESULT SamplePool::clear()
 {
     QMutexLocker locker(&m_mutex);
 
-    for (auto sample : qAsConst(m_videoSampleQueue))
+    for (auto sample : std::as_const(m_videoSampleQueue))
         sample->Release();
     m_videoSampleQueue.clear();
     m_initialized = false;
@@ -896,7 +896,7 @@ HRESULT EVRCustomPresenter::OnClockSetRate(MFTIME, float rate)
     // frame-step operation.
     if ((m_playbackRate == 0.0f) && (rate != 0.0f)) {
         cancelFrameStep();
-        for (auto sample : qAsConst(m_frameStep.samples))
+        for (auto sample : std::as_const(m_frameStep.samples))
             sample->Release();
         m_frameStep.samples.clear();
     }
@@ -1100,7 +1100,7 @@ HRESULT EVRCustomPresenter::flush()
     m_scheduler.flush();
 
     // Flush the frame-step queue.
-    for (auto sample : qAsConst(m_frameStep.samples))
+    for (auto sample : std::as_const(m_frameStep.samples))
         sample->Release();
     m_frameStep.samples.clear();
 
@@ -1408,7 +1408,7 @@ HRESULT EVRCustomPresenter::setMediaType(IMFMediaType *mediaType)
 
     // Mark each sample with our token counter. If this batch of samples becomes
     // invalid, we increment the counter, so that we know they should be discarded.
-    for (auto sample : qAsConst(sampleQueue)) {
+    for (auto sample : std::as_const(sampleQueue)) {
         hr = sample->SetUINT32(MFSamplePresenter_SampleCounter, m_tokenCounter);
         if (FAILED(hr))
             goto done;
diff --git a/src/plugins/multimedia/windows/player/mftvideo.cpp b/src/plugins/multimedia/windows/player/mftvideo.cpp
index 601c51e42..a2ef1db0b 100644
--- a/src/plugins/multimedia/windows/player/mftvideo.cpp
+++ b/src/plugins/multimedia/windows/player/mftvideo.cpp
@@ -489,7 +489,7 @@ STDMETHODIMP MFTransform::ProcessInput(DWORD dwInputStreamID, IMFSample *pSample
 //    if (!m_videoProbes.isEmpty()) {
 //        QVideoFrame frame = makeVideoFrame();
 
-//        for (MFVideoProbeControl* probe : qAsConst(m_videoProbes))
+//        for (MFVideoProbeControl* probe : std::as_const(m_videoProbes))
 //            probe->bufferProbed(frame);
 //    }
 
@@ -540,7 +540,7 @@ STDMETHODIMP MFTransform::ProcessOutput(DWORD dwFlags, DWORD cOutputBufferCount,
 //    if (!m_videoProbes.isEmpty()) {
 //        QVideoFrame frame = makeVideoFrame();
 
-//        for (MFVideoProbeControl* probe : qAsConst(m_videoProbes))
+//        for (MFVideoProbeControl* probe : std::as_const(m_videoProbes))
 //            probe->bufferProbed(frame);
 //    }
     m_videoProbeMutex.unlock();
diff --git a/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp b/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp
index 05bc7b0f7..0dd094460 100644
--- a/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp
+++ b/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp
@@ -954,7 +954,7 @@ namespace
 
         void clearMediaTypes()
         {
-            for (IMFMediaType* mediaType : qAsConst(m_mediaTypes))
+            for (IMFMediaType* mediaType : std::as_const(m_mediaTypes))
                 mediaType->Release();
             m_mediaTypes.clear();
         }
@@ -1172,7 +1172,7 @@ namespace
         bool m_prerolling = false;
 
         void clearSampleQueue() {
-            for (IUnknown* sample : qAsConst(m_sampleQueue))
+            for (IUnknown* sample : std::as_const(m_sampleQueue))
                 sample->Release();
             m_sampleQueue.clear();
         }
@@ -1279,7 +1279,7 @@ namespace
 
         void clearBufferCache()
         {
-            for (SampleBuffer sb : qAsConst(m_bufferCache))
+            for (SampleBuffer sb : std::as_const(m_bufferCache))
                 sb.m_buffer->Release();
             m_bufferCache.clear();
 
diff --git a/src/plugins/multimedia/windows/player/samplegrabber.cpp b/src/plugins/multimedia/windows/player/samplegrabber.cpp
index c1d1c3ca5..6ceb6ccff 100644
--- a/src/plugins/multimedia/windows/player/samplegrabber.cpp
+++ b/src/plugins/multimedia/windows/player/samplegrabber.cpp
@@ -131,7 +131,7 @@ STDMETHODIMP AudioSampleGrabberCallback::OnProcessSample(REFGUID guidMajorMediaT
         llSampleTime /= 10;
     }
 
-//    for (MFAudioProbeControl* probe : qAsConst(m_audioProbes))
+//    for (MFAudioProbeControl* probe : std::as_const(m_audioProbes))
 //        probe->bufferProbed((const char*)pSampleBuffer, dwSampleSize, m_format, llSampleTime);
 
     return S_OK;
diff --git a/src/spatialaudio/qaudioengine.cpp b/src/spatialaudio/qaudioengine.cpp
index 9020bae54..7825055d4 100644
--- a/src/spatialaudio/qaudioengine.cpp
+++ b/src/spatialaudio/qaudioengine.cpp
@@ -116,13 +116,13 @@ qint64 QAudioOutputStream::readData(char *data, qint64 len)
     bool ok = true;
     while (frames >= qint64(QAudioEnginePrivate::bufferSize)) {
         // Fill input buffers
-        for (auto *source : qAsConst(d->sources)) {
+        for (auto *source : std::as_const(d->sources)) {
             auto *sp = QSpatialSoundPrivate::get(source);
             float buf[QAudioEnginePrivate::bufferSize];
             sp->getBuffer(buf, QAudioEnginePrivate::bufferSize, 1);
             d->resonanceAudio->api->SetInterleavedBuffer(sp->sourceId, buf, 1, QAudioEnginePrivate::bufferSize);
         }
-        for (auto *source : qAsConst(d->stereoSources)) {
+        for (auto *source : std::as_const(d->stereoSources)) {
             auto *sp = QAmbientSoundPrivate::get(source);
             float buf[2*QAudioEnginePrivate::bufferSize];
             sp->getBuffer(buf, QAudioEnginePrivate::bufferSize, 2);
@@ -231,7 +231,7 @@ void QAudioEnginePrivate::updateRooms()
     float roomVolume = float(qInf());
     QAudioRoom *room = nullptr;
     // Find the smallest room that contains the listener and apply its room effects
-    for (auto *r : qAsConst(rooms)) {
+    for (auto *r : std::as_const(rooms)) {
         QVector3D dim2 = r->dimensions()/2.;
         float vol = dim2.x()*dim2.y()*dim2.z();
         if (vol > roomVolume)
@@ -267,7 +267,7 @@ void QAudioEnginePrivate::updateRooms()
     resonanceAudio->api->SetReverbProperties(rp->reverb);
 
     // update room effects for all sound sources
-    for (auto *s : qAsConst(sources)) {
+    for (auto *s : std::as_const(sources)) {
         auto *sp = QSpatialSoundPrivate::get(s);
         sp->updateRoomEffects();
     }