| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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| ** |
| ****************************************************************************/ |
| |
| #include "widget.h" |
| #include "xyseriesiodevice.h" |
| |
| #include <QtMultimedia/QAudioDeviceInfo> |
| #include <QtMultimedia/QAudioInput> |
| |
| #include <QtCharts/QChartView> |
| #include <QtCharts/QLineSeries> |
| #include <QtCharts/QChart> |
| #include <QtCharts/QValueAxis> |
| |
| #include <QtWidgets/QVBoxLayout> |
| |
| QT_CHARTS_USE_NAMESPACE |
| |
| Widget::Widget(const QAudioDeviceInfo &deviceInfo, QWidget *parent) : |
| QWidget(parent), |
| m_chart(new QChart), |
| m_series(new QLineSeries) |
| { |
| QChartView *chartView = new QChartView(m_chart); |
| chartView->setMinimumSize(800, 600); |
| m_chart->addSeries(m_series); |
| QValueAxis *axisX = new QValueAxis; |
| axisX->setRange(0, XYSeriesIODevice::sampleCount); |
| axisX->setLabelFormat("%g"); |
| axisX->setTitleText("Samples"); |
| QValueAxis *axisY = new QValueAxis; |
| axisY->setRange(-1, 1); |
| axisY->setTitleText("Audio level"); |
| m_chart->addAxis(axisX, Qt::AlignBottom); |
| m_series->attachAxis(axisX); |
| m_chart->addAxis(axisY, Qt::AlignLeft); |
| m_series->attachAxis(axisY); |
| m_chart->legend()->hide(); |
| m_chart->setTitle("Data from the microphone (" + deviceInfo.deviceName() + ')'); |
| |
| QVBoxLayout *mainLayout = new QVBoxLayout(this); |
| mainLayout->addWidget(chartView); |
| |
| QAudioFormat formatAudio; |
| formatAudio.setSampleRate(8000); |
| formatAudio.setChannelCount(1); |
| formatAudio.setSampleSize(8); |
| formatAudio.setCodec("audio/pcm"); |
| formatAudio.setByteOrder(QAudioFormat::LittleEndian); |
| formatAudio.setSampleType(QAudioFormat::UnSignedInt); |
| |
| m_audioInput = new QAudioInput(deviceInfo, formatAudio, this); |
| |
| m_device = new XYSeriesIODevice(m_series, this); |
| m_device->open(QIODevice::WriteOnly); |
| |
| m_audioInput->start(m_device); |
| } |
| |
| Widget::~Widget() |
| { |
| m_audioInput->stop(); |
| m_device->close(); |
| } |