Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
454 lines
15 KiB
C++
454 lines
15 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "engine.h"
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#include "levelmeter.h"
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#include "mainwidget.h"
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#include "waveform.h"
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#include "progressbar.h"
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#include "settingsdialog.h"
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#include "spectrograph.h"
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#include "tonegeneratordialog.h"
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#include "utils.h"
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#include <QLabel>
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#include <QPushButton>
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#include <QHBoxLayout>
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#include <QVBoxLayout>
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#include <QStyle>
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#include <QMenu>
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#include <QFileDialog>
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#include <QTimerEvent>
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#include <QMessageBox>
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const int NullTimerId = -1;
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MainWidget::MainWidget(QWidget *parent)
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: QWidget(parent)
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, m_mode(NoMode)
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, m_engine(new Engine(this))
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#ifndef DISABLE_WAVEFORM
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, m_waveform(new Waveform(this))
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#endif
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, m_progressBar(new ProgressBar(this))
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, m_spectrograph(new Spectrograph(this))
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, m_levelMeter(new LevelMeter(this))
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, m_modeButton(new QPushButton(this))
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, m_recordButton(new QPushButton(this))
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, m_pauseButton(new QPushButton(this))
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, m_playButton(new QPushButton(this))
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, m_settingsButton(new QPushButton(this))
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, m_infoMessage(new QLabel(tr("Select a mode to begin"), this))
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, m_infoMessageTimerId(NullTimerId)
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, m_settingsDialog(new SettingsDialog(
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m_engine->availableAudioInputDevices(),
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m_engine->availableAudioOutputDevices(),
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this))
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, m_toneGeneratorDialog(new ToneGeneratorDialog(this))
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, m_modeMenu(new QMenu(this))
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, m_loadFileAction(0)
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, m_generateToneAction(0)
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, m_recordAction(0)
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{
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m_spectrograph->setParams(SpectrumNumBands, SpectrumLowFreq, SpectrumHighFreq);
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createUi();
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connectUi();
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}
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MainWidget::~MainWidget()
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{
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}
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//-----------------------------------------------------------------------------
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// Public slots
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//-----------------------------------------------------------------------------
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void MainWidget::stateChanged(QAudio::Mode mode, QAudio::State state)
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{
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Q_UNUSED(mode);
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updateButtonStates();
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if (QAudio::ActiveState != state && QAudio::SuspendedState != state) {
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m_levelMeter->reset();
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m_spectrograph->reset();
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}
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}
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void MainWidget::formatChanged(const QAudioFormat &format)
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{
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infoMessage(formatToString(format), NullMessageTimeout);
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#ifndef DISABLE_WAVEFORM
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if (QAudioFormat() != format) {
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m_waveform->initialize(format, WaveformTileLength,
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WaveformWindowDuration);
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}
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#endif
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}
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void MainWidget::spectrumChanged(qint64 position, qint64 length,
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const FrequencySpectrum &spectrum)
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{
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m_progressBar->windowChanged(position, length);
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m_spectrograph->spectrumChanged(spectrum);
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}
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void MainWidget::infoMessage(const QString &message, int timeoutMs)
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{
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m_infoMessage->setText(message);
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if (NullTimerId != m_infoMessageTimerId) {
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killTimer(m_infoMessageTimerId);
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m_infoMessageTimerId = NullTimerId;
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}
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if (NullMessageTimeout != timeoutMs)
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m_infoMessageTimerId = startTimer(timeoutMs);
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}
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void MainWidget::errorMessage(const QString &heading, const QString &detail)
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{
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#ifdef Q_OS_SYMBIAN
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const QString message = heading + "\n" + detail;
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QMessageBox::warning(this, "", message, QMessageBox::Close);
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#else
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QMessageBox::warning(this, heading, detail, QMessageBox::Close);
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#endif
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}
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void MainWidget::timerEvent(QTimerEvent *event)
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{
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Q_ASSERT(event->timerId() == m_infoMessageTimerId);
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Q_UNUSED(event) // suppress warnings in release builds
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killTimer(m_infoMessageTimerId);
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m_infoMessageTimerId = NullTimerId;
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m_infoMessage->setText("");
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}
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void MainWidget::audioPositionChanged(qint64 position)
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{
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#ifndef DISABLE_WAVEFORM
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m_waveform->audioPositionChanged(position);
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#else
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Q_UNUSED(position)
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#endif
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}
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void MainWidget::bufferLengthChanged(qint64 length)
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{
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m_progressBar->bufferLengthChanged(length);
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}
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//-----------------------------------------------------------------------------
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// Private slots
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//-----------------------------------------------------------------------------
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void MainWidget::showFileDialog()
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{
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const QString dir;
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const QStringList fileNames = QFileDialog::getOpenFileNames(this, tr("Open WAV file"), dir, "*.wav");
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if (fileNames.count()) {
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reset();
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setMode(LoadFileMode);
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m_engine->loadFile(fileNames.front());
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updateButtonStates();
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} else {
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updateModeMenu();
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}
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}
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void MainWidget::showSettingsDialog()
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{
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m_settingsDialog->exec();
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if (m_settingsDialog->result() == QDialog::Accepted) {
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m_engine->setAudioInputDevice(m_settingsDialog->inputDevice());
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m_engine->setAudioOutputDevice(m_settingsDialog->outputDevice());
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m_engine->setWindowFunction(m_settingsDialog->windowFunction());
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}
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}
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void MainWidget::showToneGeneratorDialog()
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{
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m_toneGeneratorDialog->exec();
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if (m_toneGeneratorDialog->result() == QDialog::Accepted) {
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reset();
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setMode(GenerateToneMode);
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const qreal amplitude = m_toneGeneratorDialog->amplitude();
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if (m_toneGeneratorDialog->isFrequencySweepEnabled()) {
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m_engine->generateSweptTone(amplitude);
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} else {
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const qreal frequency = m_toneGeneratorDialog->frequency();
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const Tone tone(frequency, amplitude);
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m_engine->generateTone(tone);
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updateButtonStates();
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}
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} else {
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updateModeMenu();
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}
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}
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void MainWidget::initializeRecord()
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{
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reset();
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setMode(RecordMode);
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if (m_engine->initializeRecord())
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updateButtonStates();
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}
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//-----------------------------------------------------------------------------
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// Private functions
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//-----------------------------------------------------------------------------
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void MainWidget::createUi()
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{
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createMenus();
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setWindowTitle(tr("Spectrum Analyser"));
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QVBoxLayout *windowLayout = new QVBoxLayout(this);
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m_infoMessage->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
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m_infoMessage->setAlignment(Qt::AlignHCenter);
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windowLayout->addWidget(m_infoMessage);
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#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM
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QScopedPointer<QHBoxLayout> waveformLayout(new QHBoxLayout);
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waveformLayout->addWidget(m_progressBar);
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m_progressBar->setMinimumHeight(m_waveform->minimumHeight());
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waveformLayout->setMargin(0);
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m_waveform->setLayout(waveformLayout.data());
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waveformLayout.take();
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windowLayout->addWidget(m_waveform);
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#else
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#ifndef DISABLE_WAVEFORM
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windowLayout->addWidget(m_waveform);
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#endif // DISABLE_WAVEFORM
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windowLayout->addWidget(m_progressBar);
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#endif // SUPERIMPOSE_PROGRESS_ON_WAVEFORM
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// Spectrograph and level meter
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QScopedPointer<QHBoxLayout> analysisLayout(new QHBoxLayout);
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analysisLayout->addWidget(m_spectrograph);
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analysisLayout->addWidget(m_levelMeter);
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windowLayout->addLayout(analysisLayout.data());
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analysisLayout.take();
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// Button panel
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const QSize buttonSize(30, 30);
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m_modeButton->setText(tr("Mode"));
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m_recordIcon = QIcon(":/images/record.png");
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m_recordButton->setIcon(m_recordIcon);
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m_recordButton->setEnabled(false);
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m_recordButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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m_recordButton->setMinimumSize(buttonSize);
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m_pauseIcon = style()->standardIcon(QStyle::SP_MediaPause);
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m_pauseButton->setIcon(m_pauseIcon);
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m_pauseButton->setEnabled(false);
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m_pauseButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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m_pauseButton->setMinimumSize(buttonSize);
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m_playIcon = style()->standardIcon(QStyle::SP_MediaPlay);
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m_playButton->setIcon(m_playIcon);
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m_playButton->setEnabled(false);
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m_playButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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m_playButton->setMinimumSize(buttonSize);
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m_settingsIcon = QIcon(":/images/settings.png");
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m_settingsButton->setIcon(m_settingsIcon);
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m_settingsButton->setEnabled(true);
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m_settingsButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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m_settingsButton->setMinimumSize(buttonSize);
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QScopedPointer<QHBoxLayout> buttonPanelLayout(new QHBoxLayout);
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buttonPanelLayout->addStretch();
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buttonPanelLayout->addWidget(m_modeButton);
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buttonPanelLayout->addWidget(m_recordButton);
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buttonPanelLayout->addWidget(m_pauseButton);
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buttonPanelLayout->addWidget(m_playButton);
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buttonPanelLayout->addWidget(m_settingsButton);
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QWidget *buttonPanel = new QWidget(this);
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buttonPanel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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buttonPanel->setLayout(buttonPanelLayout.data());
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buttonPanelLayout.take(); // ownership transferred to buttonPanel
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QScopedPointer<QHBoxLayout> bottomPaneLayout(new QHBoxLayout);
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bottomPaneLayout->addWidget(buttonPanel);
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windowLayout->addLayout(bottomPaneLayout.data());
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bottomPaneLayout.take(); // ownership transferred to windowLayout
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// Apply layout
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setLayout(windowLayout);
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}
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void MainWidget::connectUi()
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{
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CHECKED_CONNECT(m_recordButton, SIGNAL(clicked()),
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m_engine, SLOT(startRecording()));
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CHECKED_CONNECT(m_pauseButton, SIGNAL(clicked()),
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m_engine, SLOT(suspend()));
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CHECKED_CONNECT(m_playButton, SIGNAL(clicked()),
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m_engine, SLOT(startPlayback()));
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CHECKED_CONNECT(m_settingsButton, SIGNAL(clicked()),
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this, SLOT(showSettingsDialog()));
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CHECKED_CONNECT(m_engine, SIGNAL(stateChanged(QAudio::Mode,QAudio::State)),
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this, SLOT(stateChanged(QAudio::Mode,QAudio::State)));
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CHECKED_CONNECT(m_engine, SIGNAL(formatChanged(const QAudioFormat &)),
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this, SLOT(formatChanged(const QAudioFormat &)));
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m_progressBar->bufferLengthChanged(m_engine->bufferLength());
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CHECKED_CONNECT(m_engine, SIGNAL(bufferLengthChanged(qint64)),
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this, SLOT(bufferLengthChanged(qint64)));
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CHECKED_CONNECT(m_engine, SIGNAL(dataLengthChanged(qint64)),
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this, SLOT(updateButtonStates()));
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CHECKED_CONNECT(m_engine, SIGNAL(recordPositionChanged(qint64)),
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m_progressBar, SLOT(recordPositionChanged(qint64)));
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CHECKED_CONNECT(m_engine, SIGNAL(playPositionChanged(qint64)),
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m_progressBar, SLOT(playPositionChanged(qint64)));
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CHECKED_CONNECT(m_engine, SIGNAL(recordPositionChanged(qint64)),
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this, SLOT(audioPositionChanged(qint64)));
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CHECKED_CONNECT(m_engine, SIGNAL(playPositionChanged(qint64)),
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this, SLOT(audioPositionChanged(qint64)));
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CHECKED_CONNECT(m_engine, SIGNAL(levelChanged(qreal, qreal, int)),
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m_levelMeter, SLOT(levelChanged(qreal, qreal, int)));
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CHECKED_CONNECT(m_engine, SIGNAL(spectrumChanged(qint64, qint64, const FrequencySpectrum &)),
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this, SLOT(spectrumChanged(qint64, qint64, const FrequencySpectrum &)));
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CHECKED_CONNECT(m_engine, SIGNAL(infoMessage(QString, int)),
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this, SLOT(infoMessage(QString, int)));
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CHECKED_CONNECT(m_engine, SIGNAL(errorMessage(QString, QString)),
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this, SLOT(errorMessage(QString, QString)));
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CHECKED_CONNECT(m_spectrograph, SIGNAL(infoMessage(QString, int)),
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this, SLOT(infoMessage(QString, int)));
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#ifndef DISABLE_WAVEFORM
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CHECKED_CONNECT(m_engine, SIGNAL(bufferChanged(qint64, qint64, const QByteArray &)),
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m_waveform, SLOT(bufferChanged(qint64, qint64, const QByteArray &)));
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#endif
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}
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void MainWidget::createMenus()
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{
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m_modeButton->setMenu(m_modeMenu);
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m_generateToneAction = m_modeMenu->addAction(tr("Play generated tone"));
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m_recordAction = m_modeMenu->addAction(tr("Record and play back"));
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m_loadFileAction = m_modeMenu->addAction(tr("Play file"));
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m_loadFileAction->setCheckable(true);
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m_generateToneAction->setCheckable(true);
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m_recordAction->setCheckable(true);
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connect(m_loadFileAction, SIGNAL(triggered(bool)), this, SLOT(showFileDialog()));
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connect(m_generateToneAction, SIGNAL(triggered(bool)), this, SLOT(showToneGeneratorDialog()));
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connect(m_recordAction, SIGNAL(triggered(bool)), this, SLOT(initializeRecord()));
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}
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void MainWidget::updateButtonStates()
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{
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const bool recordEnabled = ((QAudio::AudioOutput == m_engine->mode() ||
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(QAudio::ActiveState != m_engine->state() &&
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QAudio::IdleState != m_engine->state())) &&
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RecordMode == m_mode);
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m_recordButton->setEnabled(recordEnabled);
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const bool pauseEnabled = (QAudio::ActiveState == m_engine->state() ||
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QAudio::IdleState == m_engine->state());
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m_pauseButton->setEnabled(pauseEnabled);
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const bool playEnabled = (/*m_engine->dataLength() &&*/
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(QAudio::AudioOutput != m_engine->mode() ||
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(QAudio::ActiveState != m_engine->state() &&
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QAudio::IdleState != m_engine->state())));
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m_playButton->setEnabled(playEnabled);
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}
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void MainWidget::reset()
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{
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#ifndef DISABLE_WAVEFORM
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m_waveform->reset();
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#endif
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m_engine->reset();
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m_levelMeter->reset();
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m_spectrograph->reset();
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m_progressBar->reset();
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}
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void MainWidget::setMode(Mode mode)
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{
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m_mode = mode;
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updateModeMenu();
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}
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void MainWidget::updateModeMenu()
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{
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m_loadFileAction->setChecked(LoadFileMode == m_mode);
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m_generateToneAction->setChecked(GenerateToneMode == m_mode);
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m_recordAction->setChecked(RecordMode == m_mode);
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}
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