diff options
Diffstat (limited to 'examples/audioinput')
-rw-r--r-- | examples/audioinput/audioinput.cpp | 405 | ||||
-rw-r--r-- | examples/audioinput/audioinput.h | 138 | ||||
-rw-r--r-- | examples/audioinput/audioinput.pro | 15 | ||||
-rw-r--r-- | examples/audioinput/doc/images/audioinput-example.png | bin | 10383 -> 0 bytes | |||
-rw-r--r-- | examples/audioinput/doc/src/audioinput.qdoc | 43 | ||||
-rw-r--r-- | examples/audioinput/main.cpp | 54 |
6 files changed, 0 insertions, 655 deletions
diff --git a/examples/audioinput/audioinput.cpp b/examples/audioinput/audioinput.cpp deleted file mode 100644 index 5aeb1a7a8..000000000 --- a/examples/audioinput/audioinput.cpp +++ /dev/null @@ -1,405 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Digia Plc and its Subsidiary(-ies) 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 <stdlib.h> -#include <math.h> - -#include <QDateTime> -#include <QDebug> -#include <QPainter> -#include <QVBoxLayout> -#include <QAudioDeviceInfo> -#include <QAudioInput> -#include <qendian.h> - -#include "audioinput.h" - -#define PUSH_MODE_LABEL "Enable push mode" -#define PULL_MODE_LABEL "Enable pull mode" -#define SUSPEND_LABEL "Suspend recording" -#define RESUME_LABEL "Resume recording" - -const int BufferSize = 4096; - -AudioInfo::AudioInfo(const QAudioFormat &format, QObject *parent) - : QIODevice(parent) - , m_format(format) - , m_maxAmplitude(0) - , m_level(0.0) - -{ - 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; - } -} - -AudioInfo::~AudioInfo() -{ -} - -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); - - m_level = 0; - 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() - : m_canvas(0) - , m_modeButton(0) - , m_suspendResumeButton(0) - , m_deviceBox(0) - , m_device(QAudioDeviceInfo::defaultInputDevice()) - , m_audioInfo(0) - , m_audioInput(0) - , m_input(0) - , m_pullMode(false) - , m_buffer(BufferSize, 0) -{ - initializeWindow(); - initializeAudio(); -} - -InputTest::~InputTest() {} - -void InputTest::initializeWindow() -{ - QScopedPointer<QWidget> window(new QWidget); - QScopedPointer<QVBoxLayout> layout(new QVBoxLayout); - - m_canvas = new RenderArea(this); - layout->addWidget(m_canvas); - - m_deviceBox = new QComboBox(this); - QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput); - for(int i = 0; i < devices.size(); ++i) - m_deviceBox->addItem(devices.at(i).deviceName(), qVariantFromValue(devices.at(i))); - - connect(m_deviceBox, SIGNAL(activated(int)), SLOT(deviceChanged(int))); - layout->addWidget(m_deviceBox); - - m_volumeSlider = new QSlider(Qt::Horizontal, this); - m_volumeSlider->setRange(0, 100); - m_volumeSlider->setValue(100); - connect(m_volumeSlider, SIGNAL(valueChanged(int)), SLOT(sliderChanged(int))); - layout->addWidget(m_volumeSlider); - - m_modeButton = new QPushButton(this); - m_modeButton->setText(tr(PUSH_MODE_LABEL)); - connect(m_modeButton, SIGNAL(clicked()), SLOT(toggleMode())); - layout->addWidget(m_modeButton); - - m_suspendResumeButton = new QPushButton(this); - m_suspendResumeButton->setText(tr(SUSPEND_LABEL)); - connect(m_suspendResumeButton, SIGNAL(clicked()), SLOT(toggleSuspend())); - layout->addWidget(m_suspendResumeButton); - - window->setLayout(layout.data()); - layout.take(); // ownership transferred - - setCentralWidget(window.data()); - QWidget *const windowPtr = window.take(); // ownership transferred - windowPtr->show(); -} - -void InputTest::initializeAudio() -{ - m_pullMode = true; - - m_format.setSampleRate(8000); - m_format.setChannelCount(1); - m_format.setSampleSize(16); - m_format.setSampleType(QAudioFormat::SignedInt); - m_format.setByteOrder(QAudioFormat::LittleEndian); - m_format.setCodec("audio/pcm"); - - QAudioDeviceInfo info(QAudioDeviceInfo::defaultInputDevice()); - if (!info.isFormatSupported(m_format)) { - qWarning() << "Default format not supported - trying to use nearest"; - m_format = info.nearestFormat(m_format); - } - - m_audioInfo = new AudioInfo(m_format, this); - connect(m_audioInfo, SIGNAL(update()), SLOT(refreshDisplay())); - - createAudioInput(); -} - -void InputTest::createAudioInput() -{ - m_audioInput = new QAudioInput(m_device, m_format, this); - connect(m_audioInput, SIGNAL(notify()), SLOT(notified())); - connect(m_audioInput, SIGNAL(stateChanged(QAudio::State)), SLOT(stateChanged(QAudio::State))); - m_volumeSlider->setValue(m_audioInput->volume() * 100); - m_audioInfo->start(); - m_audioInput->start(m_audioInfo); -} - -void InputTest::notified() -{ - qWarning() << "bytesReady = " << m_audioInput->bytesReady() - << ", " << "elapsedUSecs = " <<m_audioInput->elapsedUSecs() - << ", " << "processedUSecs = "<<m_audioInput->processedUSecs(); -} - -void InputTest::readMore() -{ - if (!m_audioInput) - return; - qint64 len = m_audioInput->bytesReady(); - if (len > BufferSize) - len = BufferSize; - qint64 l = m_input->read(m_buffer.data(), len); - if (l > 0) - m_audioInfo->write(m_buffer.constData(), l); -} - -void InputTest::toggleMode() -{ - // Change bewteen pull and push modes - m_audioInput->stop(); - - if (m_pullMode) { - m_modeButton->setText(tr(PULL_MODE_LABEL)); - m_input = m_audioInput->start(); - connect(m_input, SIGNAL(readyRead()), SLOT(readMore())); - m_pullMode = false; - } else { - m_modeButton->setText(tr(PUSH_MODE_LABEL)); - m_pullMode = true; - m_audioInput->start(m_audioInfo); - } - - m_suspendResumeButton->setText(tr(SUSPEND_LABEL)); -} - -void InputTest::toggleSuspend() -{ - // toggle suspend/resume - if (m_audioInput->state() == QAudio::SuspendedState) { - qWarning() << "status: Suspended, resume()"; - m_audioInput->resume(); - m_suspendResumeButton->setText(tr(SUSPEND_LABEL)); - } else if (m_audioInput->state() == QAudio::ActiveState) { - qWarning() << "status: Active, suspend()"; - m_audioInput->suspend(); - m_suspendResumeButton->setText(tr(RESUME_LABEL)); - } else if (m_audioInput->state() == QAudio::StoppedState) { - qWarning() << "status: Stopped, resume()"; - m_audioInput->resume(); - m_suspendResumeButton->setText(tr(SUSPEND_LABEL)); - } else if (m_audioInput->state() == QAudio::IdleState) { - qWarning() << "status: IdleState"; - } -} - -void InputTest::stateChanged(QAudio::State state) -{ - qWarning() << "state = " << state; -} - -void InputTest::refreshDisplay() -{ - m_canvas->setLevel(m_audioInfo->level()); -} - -void InputTest::deviceChanged(int index) -{ - m_audioInfo->stop(); - m_audioInput->stop(); - m_audioInput->disconnect(this); - delete m_audioInput; - - m_device = m_deviceBox->itemData(index).value<QAudioDeviceInfo>(); - createAudioInput(); -} - -void InputTest::sliderChanged(int value) -{ - if (m_audioInput) - m_audioInput->setVolume(qreal(value) / 100); -} diff --git a/examples/audioinput/audioinput.h b/examples/audioinput/audioinput.h deleted file mode 100644 index 83bf66f0d..000000000 --- a/examples/audioinput/audioinput.h +++ /dev/null @@ -1,138 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Digia Plc and its Subsidiary(-ies) 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> - -class AudioInfo : public QIODevice -{ - Q_OBJECT - -public: - AudioInfo(const QAudioFormat &format, QObject *parent); - ~AudioInfo(); - - void start(); - void stop(); - - qreal level() const { return m_level; } - - qint64 readData(char *data, qint64 maxlen); - qint64 writeData(const char *data, qint64 len); - -private: - const QAudioFormat m_format; - quint32 m_maxAmplitude; - qreal m_level; // 0.0 <= m_level <= 1.0 - -signals: - void update(); -}; - - -class RenderArea : public QWidget -{ - Q_OBJECT - -public: - RenderArea(QWidget *parent = 0); - - void setLevel(qreal value); - -protected: - void paintEvent(QPaintEvent *event); - -private: - qreal m_level; - QPixmap m_pixmap; -}; - - -class InputTest : public QMainWindow -{ - Q_OBJECT - -public: - InputTest(); - ~InputTest(); - -private: - void initializeWindow(); - void initializeAudio(); - void createAudioInput(); - -private slots: - void refreshDisplay(); - void notified(); - void readMore(); - void toggleMode(); - void toggleSuspend(); - void stateChanged(QAudio::State state); - void deviceChanged(int index); - void sliderChanged(int value); - -private: - // Owned by layout - RenderArea *m_canvas; - QPushButton *m_modeButton; - QPushButton *m_suspendResumeButton; - QComboBox *m_deviceBox; - QSlider *m_volumeSlider; - - QAudioDeviceInfo m_device; - AudioInfo *m_audioInfo; - QAudioFormat m_format; - QAudioInput *m_audioInput; - QIODevice *m_input; - bool m_pullMode; - QByteArray m_buffer; -}; - -#endif // AUDIOINPUT_H diff --git a/examples/audioinput/audioinput.pro b/examples/audioinput/audioinput.pro deleted file mode 100644 index d2ee4bd90..000000000 --- a/examples/audioinput/audioinput.pro +++ /dev/null @@ -1,15 +0,0 @@ -TEMPLATE = app -TARGET = audioinput - -QT += multimedia widgets - -HEADERS = audioinput.h - -SOURCES = audioinput.cpp \ - main.cpp - -target.path = $$[QT_INSTALL_EXAMPLES]/qtmultimedia/audioinput -sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS *.pro -sources.path = $$[QT_INSTALL_EXAMPLES]/qtmultimedia/audioinput - -INSTALLS += target sources diff --git a/examples/audioinput/doc/images/audioinput-example.png b/examples/audioinput/doc/images/audioinput-example.png Binary files differdeleted file mode 100644 index fb703e68c..000000000 --- a/examples/audioinput/doc/images/audioinput-example.png +++ /dev/null diff --git a/examples/audioinput/doc/src/audioinput.qdoc b/examples/audioinput/doc/src/audioinput.qdoc deleted file mode 100644 index 4fc7e6e64..000000000 --- a/examples/audioinput/doc/src/audioinput.qdoc +++ /dev/null @@ -1,43 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** 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 Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/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: http://www.gnu.org/copyleft/fdl.html. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \example audioinput - \title Audio Input Example - \ingroup audio_examples - \brief The Audio Input Example shows the use of the QAudioInput class. - The example demonstrates the basic use cases of the QAudioInput class. - - \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. -*/ - - diff --git a/examples/audioinput/main.cpp b/examples/audioinput/main.cpp deleted file mode 100644 index d5dececf1..000000000 --- a/examples/audioinput/main.cpp +++ /dev/null @@ -1,54 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Digia Plc and its Subsidiary(-ies) 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(); -} |