mirror of https://github.com/qt/qtdatavis3d.git
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the QtDataVisualization module.
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**
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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**
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****************************************************************************/
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#include "audiolevelsiodevice.h"
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#include "audiolevels.h"
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#include <QtDataVisualization/qbardataproxy.h>
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#include <QtDataVisualization/qvalue3daxis.h>
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#include <QtDataVisualization/q3dscene.h>
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#include <QtDataVisualization/q3dcamera.h>
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#include <QtDataVisualization/qbar3dseries.h>
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#include <QtDataVisualization/q3dtheme.h>
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#include <QAudioDeviceInfo>
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#include <QAudioInput>
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using namespace QtDataVisualization;
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AudioLevels::AudioLevels(Q3DBars *graph, QObject *parent)
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: QObject(parent),
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m_graph(graph),
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m_device(0),
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m_audioInput(0)
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{
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// Set up the graph
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m_graph->setBarThickness(0.5f);
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m_graph->setBarSpacing(QSizeF(0.0, 1.0));
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m_graph->valueAxis()->setRange(-100.0f, 100.0f);
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m_graph->valueAxis()->setSegmentCount(20);
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m_graph->valueAxis()->setLabelFormat(QStringLiteral("%d%%"));
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m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityNone);
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m_graph->setSelectionMode(QAbstract3DGraph::SelectionNone);
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m_graph->scene()->activeCamera()->setCameraPosition(-25.0f, 10.0f, 190.0f);
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m_graph->activeTheme()->setType(Q3DTheme::ThemeIsabelle);
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m_graph->activeTheme()->setGridEnabled(true);
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m_graph->activeTheme()->setBackgroundEnabled(false);
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QFont font = m_graph->activeTheme()->font();
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font.setPointSize(10);
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m_graph->activeTheme()->setFont(font);
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QBar3DSeries *series = new QBar3DSeries;
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series->setMesh(QAbstract3DSeries::MeshBar);
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m_graph->addSeries(series);
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//! [0]
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QAudioDeviceInfo inputDevice = QAudioDeviceInfo::defaultInputDevice();
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QAudioFormat formatAudio;
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formatAudio.setSampleRate(inputDevice.supportedSampleRates().at(0));
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formatAudio.setChannelCount(inputDevice.supportedChannelCounts().at(0));
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formatAudio.setSampleSize(inputDevice.supportedSampleSizes().at(0));
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formatAudio.setCodec(inputDevice.supportedCodecs().at(0));
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formatAudio.setByteOrder(QAudioFormat::LittleEndian);
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formatAudio.setSampleType(QAudioFormat::UnSignedInt);
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m_audioInput = new QAudioInput(inputDevice, formatAudio, this);
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#ifdef Q_OS_MAC
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// Mac seems to wait for entire buffer to fill before calling writeData, so use smaller buffer
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m_audioInput->setBufferSize(256);
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#else
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m_audioInput->setBufferSize(1024);
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#endif
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m_device = new AudioLevelsIODevice(m_graph->seriesList().at(0)->dataProxy(), this);
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m_device->open(QIODevice::WriteOnly);
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m_audioInput->start(m_device);
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//! [0]
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}
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AudioLevels::~AudioLevels()
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{
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m_audioInput->stop();
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m_device->close();
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}
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