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Diffstat (limited to 'examples/multimedia/spectrum/app/mainwidget.cpp')
| -rw-r--r-- | examples/multimedia/spectrum/app/mainwidget.cpp | 460 |
1 files changed, 0 insertions, 460 deletions
diff --git a/examples/multimedia/spectrum/app/mainwidget.cpp b/examples/multimedia/spectrum/app/mainwidget.cpp deleted file mode 100644 index d6163f7f9..000000000 --- a/examples/multimedia/spectrum/app/mainwidget.cpp +++ /dev/null @@ -1,460 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 The Qt Company Ltd 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 "engine.h" -#include "levelmeter.h" -#include "mainwidget.h" -#include "waveform.h" -#include "progressbar.h" -#include "settingsdialog.h" -#include "spectrograph.h" -#include "tonegeneratordialog.h" -#include "utils.h" - -#include <QLabel> -#include <QPushButton> -#include <QHBoxLayout> -#include <QVBoxLayout> -#include <QStyle> -#include <QMenu> -#include <QFileDialog> -#include <QTimerEvent> -#include <QMessageBox> - -const int NullTimerId = -1; - -MainWidget::MainWidget(QWidget *parent) - : QWidget(parent) - , m_mode(NoMode) - , m_engine(new Engine(this)) -#ifndef DISABLE_WAVEFORM - , m_waveform(new Waveform(this)) -#endif - , m_progressBar(new ProgressBar(this)) - , m_spectrograph(new Spectrograph(this)) - , m_levelMeter(new LevelMeter(this)) - , m_modeButton(new QPushButton(this)) - , m_recordButton(new QPushButton(this)) - , m_pauseButton(new QPushButton(this)) - , m_playButton(new QPushButton(this)) - , m_settingsButton(new QPushButton(this)) - , m_infoMessage(new QLabel(tr("Select a mode to begin"), this)) - , m_infoMessageTimerId(NullTimerId) - , m_settingsDialog(new SettingsDialog( - m_engine->availableAudioInputDevices(), - m_engine->availableAudioOutputDevices(), - this)) - , m_toneGeneratorDialog(new ToneGeneratorDialog(this)) - , m_modeMenu(new QMenu(this)) - , m_loadFileAction(0) - , m_generateToneAction(0) - , m_recordAction(0) -{ - m_spectrograph->setParams(SpectrumNumBands, SpectrumLowFreq, SpectrumHighFreq); - - createUi(); - connectUi(); -} - -MainWidget::~MainWidget() -{ - -} - - -//----------------------------------------------------------------------------- -// Public slots -//----------------------------------------------------------------------------- - -void MainWidget::stateChanged(QAudio::Mode mode, QAudio::State state) -{ - Q_UNUSED(mode); - - updateButtonStates(); - - if (QAudio::ActiveState != state && - QAudio::SuspendedState != state && - QAudio::InterruptedState != state) { - m_levelMeter->reset(); - m_spectrograph->reset(); - } -} - -void MainWidget::formatChanged(const QAudioFormat &format) -{ - infoMessage(formatToString(format), NullMessageTimeout); - -#ifndef DISABLE_WAVEFORM - if (QAudioFormat() != format) { - m_waveform->initialize(format, WaveformTileLength, - WaveformWindowDuration); - } -#endif -} - -void MainWidget::spectrumChanged(qint64 position, qint64 length, - const FrequencySpectrum &spectrum) -{ - m_progressBar->windowChanged(position, length); - m_spectrograph->spectrumChanged(spectrum); -} - -void MainWidget::infoMessage(const QString &message, int timeoutMs) -{ - m_infoMessage->setText(message); - - if (NullTimerId != m_infoMessageTimerId) { - killTimer(m_infoMessageTimerId); - m_infoMessageTimerId = NullTimerId; - } - - if (NullMessageTimeout != timeoutMs) - m_infoMessageTimerId = startTimer(timeoutMs); -} - -void MainWidget::errorMessage(const QString &heading, const QString &detail) -{ - QMessageBox::warning(this, heading, detail, QMessageBox::Close); -} - -void MainWidget::timerEvent(QTimerEvent *event) -{ - Q_ASSERT(event->timerId() == m_infoMessageTimerId); - Q_UNUSED(event); // suppress warnings in release builds - killTimer(m_infoMessageTimerId); - m_infoMessageTimerId = NullTimerId; - m_infoMessage->setText(""); -} - -void MainWidget::audioPositionChanged(qint64 position) -{ -#ifndef DISABLE_WAVEFORM - m_waveform->audioPositionChanged(position); -#else - Q_UNUSED(position); -#endif -} - -void MainWidget::bufferLengthChanged(qint64 length) -{ - m_progressBar->bufferLengthChanged(length); -} - - -//----------------------------------------------------------------------------- -// Private slots -//----------------------------------------------------------------------------- - -void MainWidget::showFileDialog() -{ - const QString dir; - const QStringList fileNames = QFileDialog::getOpenFileNames(this, tr("Open WAV file"), dir, "*.wav"); - if (fileNames.count()) { - reset(); - setMode(LoadFileMode); - m_engine->loadFile(fileNames.front()); - updateButtonStates(); - } else { - updateModeMenu(); - } -} - -void MainWidget::showSettingsDialog() -{ - m_settingsDialog->exec(); - if (m_settingsDialog->result() == QDialog::Accepted) { - m_engine->setAudioInputDevice(m_settingsDialog->inputDevice()); - m_engine->setAudioOutputDevice(m_settingsDialog->outputDevice()); - m_engine->setWindowFunction(m_settingsDialog->windowFunction()); - } -} - -void MainWidget::showToneGeneratorDialog() -{ - m_toneGeneratorDialog->exec(); - if (m_toneGeneratorDialog->result() == QDialog::Accepted) { - reset(); - setMode(GenerateToneMode); - const qreal amplitude = m_toneGeneratorDialog->amplitude(); - if (m_toneGeneratorDialog->isFrequencySweepEnabled()) { - m_engine->generateSweptTone(amplitude); - } else { - const qreal frequency = m_toneGeneratorDialog->frequency(); - const Tone tone(frequency, amplitude); - m_engine->generateTone(tone); - updateButtonStates(); - } - } else { - updateModeMenu(); - } -} - -void MainWidget::initializeRecord() -{ - reset(); - setMode(RecordMode); - if (m_engine->initializeRecord()) - updateButtonStates(); -} - - -//----------------------------------------------------------------------------- -// Private functions -//----------------------------------------------------------------------------- - -void MainWidget::createUi() -{ - createMenus(); - - setWindowTitle(tr("Spectrum Analyser")); - - QVBoxLayout *windowLayout = new QVBoxLayout(this); - - m_infoMessage->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); - m_infoMessage->setAlignment(Qt::AlignHCenter); - windowLayout->addWidget(m_infoMessage); - -#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM - QScopedPointer<QHBoxLayout> waveformLayout(new QHBoxLayout); - waveformLayout->addWidget(m_progressBar); - m_progressBar->setMinimumHeight(m_waveform->minimumHeight()); - waveformLayout->setContentsMargins(0, 0, 0, 0); - m_waveform->setLayout(waveformLayout.data()); - waveformLayout.take(); - windowLayout->addWidget(m_waveform); -#else -#ifndef DISABLE_WAVEFORM - windowLayout->addWidget(m_waveform); -#endif // DISABLE_WAVEFORM - windowLayout->addWidget(m_progressBar); -#endif // SUPERIMPOSE_PROGRESS_ON_WAVEFORM - - // Spectrograph and level meter - - QScopedPointer<QHBoxLayout> analysisLayout(new QHBoxLayout); - analysisLayout->addWidget(m_spectrograph); - analysisLayout->addWidget(m_levelMeter); - windowLayout->addLayout(analysisLayout.data()); - analysisLayout.take(); - - // Button panel - - const QSize buttonSize(30, 30); - - m_modeButton->setText(tr("Mode")); - - m_recordIcon = QIcon(":/images/record.png"); - m_recordButton->setIcon(m_recordIcon); - m_recordButton->setEnabled(false); - m_recordButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); - m_recordButton->setMinimumSize(buttonSize); - - m_pauseIcon = style()->standardIcon(QStyle::SP_MediaPause); - m_pauseButton->setIcon(m_pauseIcon); - m_pauseButton->setEnabled(false); - m_pauseButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); - m_pauseButton->setMinimumSize(buttonSize); - - m_playIcon = style()->standardIcon(QStyle::SP_MediaPlay); - m_playButton->setIcon(m_playIcon); - m_playButton->setEnabled(false); - m_playButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); - m_playButton->setMinimumSize(buttonSize); - - m_settingsIcon = QIcon(":/images/settings.png"); - m_settingsButton->setIcon(m_settingsIcon); - m_settingsButton->setEnabled(true); - m_settingsButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); - m_settingsButton->setMinimumSize(buttonSize); - - QScopedPointer<QHBoxLayout> buttonPanelLayout(new QHBoxLayout); - buttonPanelLayout->addStretch(); - buttonPanelLayout->addWidget(m_modeButton); - buttonPanelLayout->addWidget(m_recordButton); - buttonPanelLayout->addWidget(m_pauseButton); - buttonPanelLayout->addWidget(m_playButton); - buttonPanelLayout->addWidget(m_settingsButton); - - QWidget *buttonPanel = new QWidget(this); - buttonPanel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); - buttonPanel->setLayout(buttonPanelLayout.data()); - buttonPanelLayout.take(); // ownership transferred to buttonPanel - - QScopedPointer<QHBoxLayout> bottomPaneLayout(new QHBoxLayout); - bottomPaneLayout->addWidget(buttonPanel); - windowLayout->addLayout(bottomPaneLayout.data()); - bottomPaneLayout.take(); // ownership transferred to windowLayout - - // Apply layout - - setLayout(windowLayout); -} - -void MainWidget::connectUi() -{ - connect(m_recordButton, &QPushButton::clicked, - m_engine, &Engine::startRecording); - - connect(m_pauseButton, &QPushButton::clicked, - m_engine, &Engine::suspend); - - connect(m_playButton, &QPushButton::clicked, - m_engine, &Engine::startPlayback); - - connect(m_settingsButton, &QPushButton::clicked, - this, &MainWidget::showSettingsDialog); - - connect(m_engine, &Engine::stateChanged, - this, &MainWidget::stateChanged); - - connect(m_engine, &Engine::formatChanged, - this, &MainWidget::formatChanged); - - m_progressBar->bufferLengthChanged(m_engine->bufferLength()); - - connect(m_engine, &Engine::bufferLengthChanged, - this, &MainWidget::bufferLengthChanged); - - connect(m_engine, &Engine::dataLengthChanged, - this, &MainWidget::updateButtonStates); - - connect(m_engine, &Engine::recordPositionChanged, - m_progressBar, &ProgressBar::recordPositionChanged); - - connect(m_engine, &Engine::playPositionChanged, - m_progressBar, &ProgressBar::playPositionChanged); - - connect(m_engine, &Engine::recordPositionChanged, - this, &MainWidget::audioPositionChanged); - - connect(m_engine, &Engine::playPositionChanged, - this, &MainWidget::audioPositionChanged); - - connect(m_engine, &Engine::levelChanged, - m_levelMeter, &LevelMeter::levelChanged); - - connect(m_engine, QOverload<qint64, qint64, const FrequencySpectrum&>::of(&Engine::spectrumChanged), - this, QOverload<qint64, qint64, const FrequencySpectrum&>::of(&MainWidget::spectrumChanged)); - - connect(m_engine, &Engine::infoMessage, - this, &MainWidget::infoMessage); - - connect(m_engine, &Engine::errorMessage, - this, &MainWidget::errorMessage); - - connect(m_spectrograph, &Spectrograph::infoMessage, - this, &MainWidget::infoMessage); - -#ifndef DISABLE_WAVEFORM - connect(m_engine, &Engine::bufferChanged, - m_waveform, &Waveform::bufferChanged); -#endif -} - -void MainWidget::createMenus() -{ - m_modeButton->setMenu(m_modeMenu); - - m_generateToneAction = m_modeMenu->addAction(tr("Play generated tone")); - m_recordAction = m_modeMenu->addAction(tr("Record and play back")); - m_loadFileAction = m_modeMenu->addAction(tr("Play file")); - - m_loadFileAction->setCheckable(true); - m_generateToneAction->setCheckable(true); - m_recordAction->setCheckable(true); - - connect(m_loadFileAction, &QAction::triggered, this, &MainWidget::showFileDialog); - connect(m_generateToneAction, &QAction::triggered, this, &MainWidget::showToneGeneratorDialog); - connect(m_recordAction, &QAction::triggered, this, &MainWidget::initializeRecord); -} - -void MainWidget::updateButtonStates() -{ - const bool recordEnabled = ((QAudio::AudioOutput == m_engine->mode() || - (QAudio::ActiveState != m_engine->state() && - QAudio::IdleState != m_engine->state())) && - RecordMode == m_mode); - m_recordButton->setEnabled(recordEnabled); - - const bool pauseEnabled = (QAudio::ActiveState == m_engine->state() || - QAudio::IdleState == m_engine->state()); - m_pauseButton->setEnabled(pauseEnabled); - - const bool playEnabled = (/*m_engine->dataLength() &&*/ - (QAudio::AudioOutput != m_engine->mode() || - (QAudio::ActiveState != m_engine->state() && - QAudio::IdleState != m_engine->state() && - QAudio::InterruptedState != m_engine->state()))); - m_playButton->setEnabled(playEnabled); -} - -void MainWidget::reset() -{ -#ifndef DISABLE_WAVEFORM - m_waveform->reset(); -#endif - m_engine->reset(); - m_levelMeter->reset(); - m_spectrograph->reset(); - m_progressBar->reset(); -} - -void MainWidget::setMode(Mode mode) -{ - m_mode = mode; - updateModeMenu(); -} - -void MainWidget::updateModeMenu() -{ - m_loadFileAction->setChecked(LoadFileMode == m_mode); - m_generateToneAction->setChecked(GenerateToneMode == m_mode); - m_recordAction->setChecked(RecordMode == m_mode); -} |