diff options
Diffstat (limited to 'examples/multimedia/audioinput')
| -rw-r--r-- | examples/multimedia/audioinput/audioinput.cpp | 359 | ||||
| -rw-r--r-- | examples/multimedia/audioinput/audioinput.h | 138 | ||||
| -rw-r--r-- | examples/multimedia/audioinput/audioinput.pro | 13 | ||||
| -rw-r--r-- | examples/multimedia/audioinput/doc/images/audioinput-example.png | bin | 10383 -> 0 bytes | |||
| -rw-r--r-- | examples/multimedia/audioinput/doc/src/audioinput.qdoc | 45 | ||||
| -rw-r--r-- | examples/multimedia/audioinput/main.cpp | 64 |
6 files changed, 0 insertions, 619 deletions
diff --git a/examples/multimedia/audioinput/audioinput.cpp b/examples/multimedia/audioinput/audioinput.cpp deleted file mode 100644 index 611500c41..000000000 --- a/examples/multimedia/audioinput/audioinput.cpp +++ /dev/null @@ -1,359 +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 "audioinput.h" - -#include <stdlib.h> -#include <math.h> - -#include <QDateTime> -#include <QDebug> -#include <QPainter> -#include <QVBoxLayout> -#include <QAudioDeviceInfo> -#include <QAudioInput> -#include <qendian.h> - -AudioInfo::AudioInfo(const QAudioFormat &format) - : m_format(format) -{ - switch (m_format.sampleSize()) { - case 8: - switch (m_format.sampleType()) { - case QAudioFormat::UnSignedInt: - m_maxAmplitude = 255; - break; - case QAudioFormat::SignedInt: - m_maxAmplitude = 127; - break; - default: - break; - } - break; - case 16: - switch (m_format.sampleType()) { - case QAudioFormat::UnSignedInt: - m_maxAmplitude = 65535; - break; - case QAudioFormat::SignedInt: - m_maxAmplitude = 32767; - break; - default: - break; - } - break; - - case 32: - switch (m_format.sampleType()) { - case QAudioFormat::UnSignedInt: - m_maxAmplitude = 0xffffffff; - break; - case QAudioFormat::SignedInt: - m_maxAmplitude = 0x7fffffff; - break; - case QAudioFormat::Float: - m_maxAmplitude = 0x7fffffff; // Kind of - default: - break; - } - break; - - default: - break; - } -} - -void AudioInfo::start() -{ - open(QIODevice::WriteOnly); -} - -void AudioInfo::stop() -{ - close(); -} - -qint64 AudioInfo::readData(char *data, qint64 maxlen) -{ - Q_UNUSED(data); - Q_UNUSED(maxlen); - - return 0; -} - -qint64 AudioInfo::writeData(const char *data, qint64 len) -{ - if (m_maxAmplitude) { - Q_ASSERT(m_format.sampleSize() % 8 == 0); - const int channelBytes = m_format.sampleSize() / 8; - const int sampleBytes = m_format.channelCount() * channelBytes; - Q_ASSERT(len % sampleBytes == 0); - const int numSamples = len / sampleBytes; - - quint32 maxValue = 0; - const unsigned char *ptr = reinterpret_cast<const unsigned char *>(data); - - for (int i = 0; i < numSamples; ++i) { - for (int j = 0; j < m_format.channelCount(); ++j) { - quint32 value = 0; - - if (m_format.sampleSize() == 8 && m_format.sampleType() == QAudioFormat::UnSignedInt) { - value = *reinterpret_cast<const quint8*>(ptr); - } else if (m_format.sampleSize() == 8 && m_format.sampleType() == QAudioFormat::SignedInt) { - value = qAbs(*reinterpret_cast<const qint8*>(ptr)); - } else if (m_format.sampleSize() == 16 && m_format.sampleType() == QAudioFormat::UnSignedInt) { - if (m_format.byteOrder() == QAudioFormat::LittleEndian) - value = qFromLittleEndian<quint16>(ptr); - else - value = qFromBigEndian<quint16>(ptr); - } else if (m_format.sampleSize() == 16 && m_format.sampleType() == QAudioFormat::SignedInt) { - if (m_format.byteOrder() == QAudioFormat::LittleEndian) - value = qAbs(qFromLittleEndian<qint16>(ptr)); - else - value = qAbs(qFromBigEndian<qint16>(ptr)); - } else if (m_format.sampleSize() == 32 && m_format.sampleType() == QAudioFormat::UnSignedInt) { - if (m_format.byteOrder() == QAudioFormat::LittleEndian) - value = qFromLittleEndian<quint32>(ptr); - else - value = qFromBigEndian<quint32>(ptr); - } else if (m_format.sampleSize() == 32 && m_format.sampleType() == QAudioFormat::SignedInt) { - if (m_format.byteOrder() == QAudioFormat::LittleEndian) - value = qAbs(qFromLittleEndian<qint32>(ptr)); - else - value = qAbs(qFromBigEndian<qint32>(ptr)); - } else if (m_format.sampleSize() == 32 && m_format.sampleType() == QAudioFormat::Float) { - value = qAbs(*reinterpret_cast<const float*>(ptr) * 0x7fffffff); // assumes 0-1.0 - } - - maxValue = qMax(value, maxValue); - ptr += channelBytes; - } - } - - maxValue = qMin(maxValue, m_maxAmplitude); - m_level = qreal(maxValue) / m_maxAmplitude; - } - - emit update(); - return len; -} - -RenderArea::RenderArea(QWidget *parent) - : QWidget(parent) -{ - setBackgroundRole(QPalette::Base); - setAutoFillBackground(true); - - setMinimumHeight(30); - setMinimumWidth(200); -} - -void RenderArea::paintEvent(QPaintEvent * /* event */) -{ - QPainter painter(this); - - painter.setPen(Qt::black); - painter.drawRect(QRect(painter.viewport().left()+10, - painter.viewport().top()+10, - painter.viewport().right()-20, - painter.viewport().bottom()-20)); - if (m_level == 0.0) - return; - - int pos = ((painter.viewport().right()-20)-(painter.viewport().left()+11))*m_level; - painter.fillRect(painter.viewport().left()+11, - painter.viewport().top()+10, - pos, - painter.viewport().height()-21, - Qt::red); -} - -void RenderArea::setLevel(qreal value) -{ - m_level = value; - update(); -} - - -InputTest::InputTest() -{ - initializeWindow(); - initializeAudio(QAudioDeviceInfo::defaultInputDevice()); -} - - -void InputTest::initializeWindow() -{ - QWidget *window = new QWidget; - QVBoxLayout *layout = new QVBoxLayout; - - m_canvas = new RenderArea(this); - layout->addWidget(m_canvas); - - m_deviceBox = new QComboBox(this); - const QAudioDeviceInfo &defaultDeviceInfo = QAudioDeviceInfo::defaultInputDevice(); - m_deviceBox->addItem(defaultDeviceInfo.deviceName(), QVariant::fromValue(defaultDeviceInfo)); - for (auto &deviceInfo: QAudioDeviceInfo::availableDevices(QAudio::AudioInput)) { - if (deviceInfo != defaultDeviceInfo) - m_deviceBox->addItem(deviceInfo.deviceName(), QVariant::fromValue(deviceInfo)); - } - - connect(m_deviceBox, QOverload<int>::of(&QComboBox::activated), this, &InputTest::deviceChanged); - layout->addWidget(m_deviceBox); - - m_volumeSlider = new QSlider(Qt::Horizontal, this); - m_volumeSlider->setRange(0, 100); - m_volumeSlider->setValue(100); - connect(m_volumeSlider, &QSlider::valueChanged, this, &InputTest::sliderChanged); - layout->addWidget(m_volumeSlider); - - m_modeButton = new QPushButton(this); - connect(m_modeButton, &QPushButton::clicked, this, &InputTest::toggleMode); - layout->addWidget(m_modeButton); - - m_suspendResumeButton = new QPushButton(this); - connect(m_suspendResumeButton, &QPushButton::clicked, this, &InputTest::toggleSuspend); - layout->addWidget(m_suspendResumeButton); - - window->setLayout(layout); - - setCentralWidget(window); - window->show(); -} - -void InputTest::initializeAudio(const QAudioDeviceInfo &deviceInfo) -{ - QAudioFormat format; - format.setSampleRate(8000); - format.setChannelCount(1); - format.setSampleSize(16); - format.setSampleType(QAudioFormat::SignedInt); - format.setByteOrder(QAudioFormat::LittleEndian); - format.setCodec("audio/pcm"); - - if (!deviceInfo.isFormatSupported(format)) { - qWarning() << "Default format not supported - trying to use nearest"; - format = deviceInfo.nearestFormat(format); - } - - m_audioInfo.reset(new AudioInfo(format)); - connect(m_audioInfo.data(), &AudioInfo::update, [this]() { - m_canvas->setLevel(m_audioInfo->level()); - }); - - m_audioInput.reset(new QAudioInput(deviceInfo, format)); - qreal initialVolume = QAudio::convertVolume(m_audioInput->volume(), - QAudio::LinearVolumeScale, - QAudio::LogarithmicVolumeScale); - m_volumeSlider->setValue(qRound(initialVolume * 100)); - m_audioInfo->start(); - toggleMode(); -} - -void InputTest::toggleMode() -{ - m_audioInput->stop(); - toggleSuspend(); - - // Change bewteen pull and push modes - if (m_pullMode) { - m_modeButton->setText(tr("Enable push mode")); - m_audioInput->start(m_audioInfo.data()); - } else { - m_modeButton->setText(tr("Enable pull mode")); - auto io = m_audioInput->start(); - connect(io, &QIODevice::readyRead, - [&, io]() { - qint64 len = m_audioInput->bytesReady(); - const int BufferSize = 4096; - if (len > BufferSize) - len = BufferSize; - - QByteArray buffer(len, 0); - qint64 l = io->read(buffer.data(), len); - if (l > 0) - m_audioInfo->write(buffer.constData(), l); - }); - } - - m_pullMode = !m_pullMode; -} - -void InputTest::toggleSuspend() -{ - // toggle suspend/resume - if (m_audioInput->state() == QAudio::SuspendedState || m_audioInput->state() == QAudio::StoppedState) { - m_audioInput->resume(); - m_suspendResumeButton->setText(tr("Suspend recording")); - } else if (m_audioInput->state() == QAudio::ActiveState) { - m_audioInput->suspend(); - m_suspendResumeButton->setText(tr("Resume recording")); - } else if (m_audioInput->state() == QAudio::IdleState) { - // no-op - } -} - -void InputTest::deviceChanged(int index) -{ - m_audioInfo->stop(); - m_audioInput->stop(); - m_audioInput->disconnect(this); - - initializeAudio(m_deviceBox->itemData(index).value<QAudioDeviceInfo>()); -} - -void InputTest::sliderChanged(int value) -{ - qreal linearVolume = QAudio::convertVolume(value / qreal(100), - QAudio::LogarithmicVolumeScale, - QAudio::LinearVolumeScale); - - m_audioInput->setVolume(linearVolume); -} diff --git a/examples/multimedia/audioinput/audioinput.h b/examples/multimedia/audioinput/audioinput.h deleted file mode 100644 index 33ddd51af..000000000 --- a/examples/multimedia/audioinput/audioinput.h +++ /dev/null @@ -1,138 +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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef AUDIOINPUT_H -#define AUDIOINPUT_H - -#include <QAudioInput> -#include <QByteArray> -#include <QComboBox> -#include <QMainWindow> -#include <QObject> -#include <QPixmap> -#include <QPushButton> -#include <QSlider> -#include <QWidget> -#include <QScopedPointer> - -class AudioInfo : public QIODevice -{ - Q_OBJECT - -public: - AudioInfo(const QAudioFormat &format); - - void start(); - void stop(); - - qreal level() const { return m_level; } - - qint64 readData(char *data, qint64 maxlen) override; - qint64 writeData(const char *data, qint64 len) override; - -private: - const QAudioFormat m_format; - quint32 m_maxAmplitude = 0; - qreal m_level = 0.0; // 0.0 <= m_level <= 1.0 - -signals: - void update(); -}; - - -class RenderArea : public QWidget -{ - Q_OBJECT - -public: - explicit RenderArea(QWidget *parent = nullptr); - - void setLevel(qreal value); - -protected: - void paintEvent(QPaintEvent *event) override; - -private: - qreal m_level = 0; - QPixmap m_pixmap; -}; - - -class InputTest : public QMainWindow -{ - Q_OBJECT - -public: - InputTest(); - -private: - void initializeWindow(); - void initializeAudio(const QAudioDeviceInfo &deviceInfo); - -private slots: - void toggleMode(); - void toggleSuspend(); - void deviceChanged(int index); - void sliderChanged(int value); - -private: - // Owned by layout - RenderArea *m_canvas = nullptr; - QPushButton *m_modeButton = nullptr; - QPushButton *m_suspendResumeButton = nullptr; - QComboBox *m_deviceBox = nullptr; - QSlider *m_volumeSlider = nullptr; - - QScopedPointer<AudioInfo> m_audioInfo; - QScopedPointer<QAudioInput> m_audioInput; - bool m_pullMode = true; -}; - -#endif // AUDIOINPUT_H diff --git a/examples/multimedia/audioinput/audioinput.pro b/examples/multimedia/audioinput/audioinput.pro deleted file mode 100644 index 708d40d93..000000000 --- a/examples/multimedia/audioinput/audioinput.pro +++ /dev/null @@ -1,13 +0,0 @@ -TEMPLATE = app -TARGET = audioinput - -QT += multimedia widgets - -HEADERS = audioinput.h - -SOURCES = audioinput.cpp \ - main.cpp - -target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audioinput -INSTALLS += target -include(../shared/shared.pri) diff --git a/examples/multimedia/audioinput/doc/images/audioinput-example.png b/examples/multimedia/audioinput/doc/images/audioinput-example.png Binary files differdeleted file mode 100644 index fb703e68c..000000000 --- a/examples/multimedia/audioinput/doc/images/audioinput-example.png +++ /dev/null diff --git a/examples/multimedia/audioinput/doc/src/audioinput.qdoc b/examples/multimedia/audioinput/doc/src/audioinput.qdoc deleted file mode 100644 index 5339f2821..000000000 --- a/examples/multimedia/audioinput/doc/src/audioinput.qdoc +++ /dev/null @@ -1,45 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:FDL$ -** 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. -** -** GNU Free Documentation License Usage -** Alternatively, this file may be used under the terms of the GNU Free -** Documentation License version 1.3 as published by the Free Software -** Foundation and appearing in the file included in the packaging of -** this file. Please review the following information to ensure -** the GNU Free Documentation License version 1.3 requirements -** will be met: https://www.gnu.org/licenses/fdl-1.3.html. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \example multimedia/audioinput - \title Audio Input Example - \ingroup multimedia_examples - \brief Recording audio using the QAudioInput class. - - \e{Audio Input} demonstrates the basic use cases of QAudioInput. - - \image audioinput-example.png - - Qt provides the QAudioInput class to enable audio functionality within - a standard application user interface. - - This example calculates the maximum linear value of the input audio from the - microphone and displays the output. - - \include examples-run.qdocinc -*/ diff --git a/examples/multimedia/audioinput/main.cpp b/examples/multimedia/audioinput/main.cpp deleted file mode 100644 index 393f64415..000000000 --- a/examples/multimedia/audioinput/main.cpp +++ /dev/null @@ -1,64 +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 <QtWidgets> - -#include "audioinput.h" - -int main(int argv, char **args) -{ - QApplication app(argv, args); - app.setApplicationName("Audio Input Test"); - - InputTest input; - input.show(); - - return app.exec(); -} |
