/**************************************************************************** ** ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtDeclarative module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "guitartuner.h" #ifdef Q_OS_SYMBIAN #include <SoundDevice.h> #endif // Q_OS_SYMBIAN #if defined(Q_OS_SYMBIAN) && defined(ORIENTATIONLOCK) #include <eikenv.h> #include <eikappui.h> #include <aknenv.h> #include <aknappui.h> #endif // Q_OS_SYMBIAN && ORIENTATIONLOCK GuitarTuner::GuitarTuner(QWidget *parent) : QMainWindow(parent) { // Set up the QML. m_guitarTunerUI = new QDeclarativeView(QUrl("qrc:/src/application.qml"), this); setCentralWidget(m_guitarTunerUI); m_guitarTunerUI->setResizeMode(QDeclarativeView::SizeRootObjectToView); qmlObject = m_guitarTunerUI->rootObject(); // Init audio output and input. initAudioOutput(); initAudioInput(); // Connect the quit signal of m_guitarTunerUI // into the close slot of this. connect(m_guitarTunerUI->engine(), SIGNAL(quit()), SLOT(close())); // Connect the signals from qmlObject into proper slots // of this and m_voicegenerator. connect(qmlObject, SIGNAL(muteStateChanged(bool)), SLOT(muteStateChanged(bool))); connect(qmlObject, SIGNAL(volumeChanged(qreal)), m_voicegenerator, SLOT(setAmplitude(qreal))); connect(qmlObject, SIGNAL(volumeChanged(qreal)), SLOT(setMaxVolumeLevel(qreal))); // Connect the modeChanged signal from qmlObject // into modeChanged slot of this class. connect(qmlObject, SIGNAL(modeChanged(bool)), SLOT(modeChanged(bool))); // Connect the microphoneSensitivityChanged signal from // m_guitarTunerUI into setCutOffPercentage slot of m_analyzer class. connect(qmlObject, SIGNAL(microphoneSensitivityChanged(qreal)), m_analyzer, SLOT(setCutOffPercentage(qreal))); // Connect the signals from m_analyzer into slots of qmlObject. connect(m_analyzer, SIGNAL(lowVoice()), qmlObject, SLOT(lowVoice())); connect(m_analyzer, SIGNAL(correctFrequency()), qmlObject, SLOT(correctFrequencyObtained())); connect(m_analyzer, SIGNAL(voiceDifference(QVariant)), qmlObject, SLOT(voiceDifferenceChanged(QVariant))); // Initialise the MaximumVoiceDifference // value of qmlObject with the value obtained from m_analyzer. qmlObject->setProperty("maxVoiceDifference", m_analyzer->getMaximumVoiceDifference()); // Connect the targetFrequencyChanged signal of qmlObject // into targetFrequencyChanged slot of this class. connect(qmlObject, SIGNAL(targetFrequencyChanged(qreal)), SLOT(targetFrequencyChanged(qreal))); // Start voice output or input by using the modeChanged function, // depending of the current mode. modeChanged(qmlObject->property("isInput").toBool()); } /** * Inits audio output. */ void GuitarTuner::initAudioOutput() { // Set up the output format. m_format_output.setFrequency(DataFrequencyHzOutput); m_format_output.setCodec("audio/pcm"); m_format_output.setSampleSize(16); m_format_output.setChannels(1); m_format_output.setByteOrder(QAudioFormat::LittleEndian); m_format_output.setSampleType(QAudioFormat::SignedInt); // Obtain a default output device, and if the format is not // supported, find the nearest format available. QAudioDeviceInfo outputDeviceInfo( QAudioDeviceInfo::defaultOutputDevice()); if (!outputDeviceInfo.isFormatSupported(m_format_output)) { m_format_output = outputDeviceInfo.nearestFormat(m_format_output); } // Create new QAudioOutput and VoiceGenerator instances, and store // them in m_audioOutput and m_voicegenerator, respectively. m_audioOutput = new QAudioOutput(outputDeviceInfo, m_format_output, this); m_voicegenerator = new VoiceGenerator(m_format_output, qmlObject->property("frequency").toReal(), qmlObject->property("volume").toReal(), this); // Connect m_audioOutput stateChanged signal to outputStateChanged. connect(m_audioOutput, SIGNAL(stateChanged(QAudio::State)), SLOT(outputStateChanged(QAudio::State))); } /** * Inits audio input. */ void GuitarTuner::initAudioInput() { // Set up the input format. m_format_input.setFrequency(DataFrequencyHzInput); m_format_input.setCodec("audio/pcm"); m_format_input.setSampleSize(16); m_format_input.setChannels(1); m_format_input.setByteOrder(QAudioFormat::LittleEndian); m_format_input.setSampleType(QAudioFormat::SignedInt); // Obtain a default input device, and if the format is not // supported, find the nearest format available. QAudioDeviceInfo inputDeviceInfo( QAudioDeviceInfo::defaultInputDevice()); if (!inputDeviceInfo.isFormatSupported(m_format_input)) { m_format_input = inputDeviceInfo.nearestFormat(m_format_input); } // Create new QAudioInput and VoiceAnalyzer instances, and store // them in m_audioInput and m_analyzer, respectively. // Remember to set the cut-off percentage for voice analyzer. m_audioInput = new QAudioInput(inputDeviceInfo, m_format_input, this); m_analyzer = new VoiceAnalyzer(m_format_input, this); m_analyzer->setCutOffPercentage(qmlObject->property("sensitivity").toReal()); } /** * Receives a mode changed signal. */ void GuitarTuner::modeChanged(bool isInput) { // If the mode must be changed to input mode: if (isInput) { // Stop audio output and audio generator. m_audioOutput->stop(); m_voicegenerator->stop(); // Start the audio analyzer and then the audio input. m_analyzer->start(qmlObject->property("frequency").toReal()); m_audioInput->start(m_analyzer); } // Else: else { // Stop audio input and audio analyzer. m_audioInput->stop(); m_analyzer->stop(); // Set up the audio output. // If the current frequency of voice generator // is not the same as the target frequency selected in the UI, // update voice generator's frequency. if (m_voicegenerator->frequency() != qmlObject->property("frequency").toReal()) { m_voicegenerator->setFrequency(qmlObject->property("frequency").toReal()); } // Start the voice generator and then the audio output. m_voicegenerator->start(); m_audioOutput->start(m_voicegenerator); // Call setMaxVolumeLevel(1) to set the maximum volume louder. setMaxVolumeLevel(qmlObject->property("volume").toReal()); // If the voice is muted, the voice is suspended // in the outputStateChanged slot. } } /** * Receives a output state changed signal. * Suspends the audio output, if the state is ActiveState * and the voice is muted. */ void GuitarTuner::outputStateChanged(QAudio::State state) { if (QAudio::ActiveState == state && qmlObject->property("isMuted").toBool()) { // If the voice is muted, suspend the voice. m_audioOutput->suspend(); } } /** * Receives a mute state changed signal. * Suspends the audio output or resumes it, depending of the * isMuted parameter. */ void GuitarTuner::muteStateChanged(bool isMuted) { if (isMuted) { m_audioOutput->suspend(); } else { m_audioOutput->resume(); } } /** * Receives a target frequency signal. */ void GuitarTuner::targetFrequencyChanged(qreal targetFrequency) { // If the output mode is active: if (!qmlObject->property("isInput").toBool()) { // Stop the audio output and voice generator. m_audioOutput->stop(); m_voicegenerator->stop(); // Set the voice generator's frequency to the target frequency. m_voicegenerator->setFrequency(targetFrequency); // Start the voice generator and audio output. m_voicegenerator->start(); m_audioOutput->start(m_voicegenerator); // Call setMaxVolumeLevel(1) to set the maximum volume louder. setMaxVolumeLevel(qmlObject->property("volume").toReal()); // If the voice is muted, the voice is suspended // in the outputStateChanged slot. } // Else: else { // Stop the audio input and voice analyzer. m_audioInput->stop(); m_analyzer->stop(); // Start the voice analyzer with new frequency and audio input. m_analyzer->start(targetFrequency); m_audioInput->start(m_analyzer); } } /** * This method provides a hack to set the maximum volume level in * Symbian. */ void GuitarTuner::setMaxVolumeLevel(qreal percent) { if (percent >= 1.0) { percent = 1.0; } else if (percent <= 0.0) { percent = 0.0; } percent = percent*0.5 + 0.5; // Warning! This is a hack, which can break when the QtMobility // changes. Use at your own risk. #ifdef Q_OS_SYMBIAN unsigned int *pointer_to_abstract_audio = (unsigned int*)( (unsigned char*)m_audioOutput + 8 ); unsigned int *dev_sound_wrapper = (unsigned int*)(*pointer_to_abstract_audio) + 16; unsigned int *temp = ((unsigned int*)(*dev_sound_wrapper) + 6); CMMFDevSound *dev_sound = (CMMFDevSound*)(*temp); dev_sound->SetVolume((unsigned int) (percent*(float)dev_sound->MaxVolume())); #endif } /** * A function used to lock the orientation. */ void GuitarTuner::setOrientation(Orientation orientation) { #ifdef Q_OS_SYMBIAN if (orientation != Auto) { #if defined(ORIENTATIONLOCK) const CAknAppUiBase::TAppUiOrientation uiOrientation = (orientation == LockPortrait) ? CAknAppUi::EAppUiOrientationPortrait : CAknAppUi::EAppUiOrientationLandscape; CAknAppUi* appUi = dynamic_cast<CAknAppUi*> (CEikonEnv::Static()->AppUi()); TRAPD(error, if (appUi) appUi->SetOrientationL(uiOrientation); ); #else // ORIENTATIONLOCK qWarning(QString("'ORIENTATIONLOCK' needs to be defined on") +QString(" Symbian when locking the orientation.")); #endif // ORIENTATIONLOCK } #elif defined(Q_WS_MAEMO_5) Qt::WidgetAttribute attribute; switch (orientation) { case LockPortrait: attribute = Qt::WA_Maemo5PortraitOrientation; break; case LockLandscape: attribute = Qt::WA_Maemo5LandscapeOrientation; break; case Auto: default: attribute = Qt::WA_Maemo5AutoOrientation; break; } setAttribute(attribute, true); #else // Q_OS_SYMBIAN Q_UNUSED(orientation); #endif // Q_OS_SYMBIAN }
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