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Diffstat (limited to 'examples/mobile/guitartuner/src/guitartuner.cpp')
| -rw-r--r-- | examples/mobile/guitartuner/src/guitartuner.cpp | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/examples/mobile/guitartuner/src/guitartuner.cpp b/examples/mobile/guitartuner/src/guitartuner.cpp deleted file mode 100644 index 95e7ee9b..00000000 --- a/examples/mobile/guitartuner/src/guitartuner.cpp +++ /dev/null @@ -1,326 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#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) -{ - // TODO: Needs a Qt5 implmentation - Q_UNUSED(orientation) -} |