diff options
Diffstat (limited to 'examples')
24 files changed, 2009 insertions, 30 deletions
diff --git a/examples/examples.pro b/examples/examples.pro index fb5fa57..dc407e7 100644 --- a/examples/examples.pro +++ b/examples/examples.pro @@ -39,6 +39,7 @@ symbian: SUBDIRS = \ uitools \ xml +contains(QT_CONFIG, multimedia):!static: SUBDIRS += multimedia contains(QT_CONFIG, phonon):!static: SUBDIRS += phonon contains(QT_CONFIG, webkit): SUBDIRS += webkit embedded:SUBDIRS += qws diff --git a/examples/gestures/imageviewer/imageviewer.pro b/examples/gestures/imageviewer/imageviewer.pro index 4c35dce..efbca00 100644 --- a/examples/gestures/imageviewer/imageviewer.pro +++ b/examples/gestures/imageviewer/imageviewer.pro @@ -1,12 +1,11 @@ -###################################################################### -# Automatically generated by qmake (2.01a) Thu Sep 11 17:18:17 2008 -###################################################################### - TEMPLATE = app TARGET = DEPENDPATH += . INCLUDEPATH += . # Input -HEADERS += imagewidget.h -SOURCES += imagewidget.cpp main.cpp +HEADERS += imagewidget.h \ + tapandholdgesture.h +SOURCES += imagewidget.cpp \ + tapandholdgesture.cpp \ + main.cpp diff --git a/examples/gestures/imageviewer/imagewidget.cpp b/examples/gestures/imageviewer/imagewidget.cpp index 717bb09..99889ed 100644 --- a/examples/gestures/imageviewer/imagewidget.cpp +++ b/examples/gestures/imageviewer/imagewidget.cpp @@ -65,7 +65,7 @@ ImageWidget::ImageWidget(QWidget *parent) panGesture = new QPanGesture(this); connect(panGesture, SIGNAL(triggered()), this, SLOT(gestureTriggered())); - tapAndHoldGesture = new QTapAndHoldGesture(this); + tapAndHoldGesture = new TapAndHoldGesture(this); connect(tapAndHoldGesture, SIGNAL(triggered()), this, SLOT(gestureTriggered())); } @@ -100,7 +100,7 @@ void ImageWidget::paintEvent(QPaintEvent*) p.setPen(QPen(Qt::gray, 2)); p.drawEllipse(touchFeedback.position, 5, 5); if (touchFeedback.doubleTapped) { - p.setPen(QPen(Qt::gray, 2, Qt::DotLine)); + p.setPen(QPen(Qt::darkGray, 2, Qt::DotLine)); p.drawEllipse(touchFeedback.position, 15, 15); } else if (touchFeedback.tapAndHoldState != 0) { QPoint pts[8] = { @@ -159,40 +159,37 @@ void ImageWidget::gestureTriggered() touchFeedback.tapped = false; touchFeedback.doubleTapped = false; - QGesture *g = qobject_cast<QGesture*>(sender()); if (sender() == panGesture) { + QPanGesture *pg = qobject_cast<QPanGesture*>(sender()); if (zoomedIn) { - // usual panning #ifndef QT_NO_CURSOR - if (g->state() == Qt::GestureStarted) - setCursor(Qt::SizeAllCursor); - else - setCursor(Qt::ArrowCursor); + switch (pg->state()) { + case Qt::GestureStarted: + case Qt::GestureUpdated: + setCursor(Qt::SizeAllCursor); + break; + default: + setCursor(Qt::ArrowCursor); + } #endif - const int dx = g->pos().x() - g->lastPos().x(); - const int dy = g->pos().y() - g->lastPos().y(); - horizontalOffset += dx; - verticalOffset += dy; + horizontalOffset += pg->lastOffset().width(); + verticalOffset += pg->lastOffset().height(); update(); } else { // only slide gesture should be accepted - const QPanGesture *pg = static_cast<const QPanGesture*>(g); - if (g->state() == Qt::GestureFinished) { + if (pg->state() == Qt::GestureFinished) { touchFeedback.sliding = false; zoomed = rotated = false; - if (pg->totalOffset().width() > 0) { - qDebug() << "slide right"; + if (pg->totalOffset().width() > 0) goNextImage(); - } else { - qDebug() << "slide left"; + else goPrevImage(); - } updateImage(); } } feedbackFadeOutTimer.start(500, this); } else if (sender() == tapAndHoldGesture) { - if (g->state() == Qt::GestureFinished) { + if (tapAndHoldGesture->state() == Qt::GestureFinished) { qDebug() << "tap and hold detected"; touchFeedback.reset(); update(); @@ -201,7 +198,7 @@ void ImageWidget::gestureTriggered() menu.addAction("Action 1"); menu.addAction("Action 2"); menu.addAction("Action 3"); - menu.exec(mapToGlobal(g->pos())); + menu.exec(mapToGlobal(tapAndHoldGesture->pos())); } feedbackFadeOutTimer.start(500, this); } diff --git a/examples/gestures/imageviewer/imagewidget.h b/examples/gestures/imageviewer/imagewidget.h index e12634d..d8d5f8d 100644 --- a/examples/gestures/imageviewer/imagewidget.h +++ b/examples/gestures/imageviewer/imagewidget.h @@ -48,6 +48,8 @@ #include <QtGui> +#include "tapandholdgesture.h" + class ImageWidget : public QWidget { Q_OBJECT @@ -79,7 +81,7 @@ private: void goToImage(int index); QPanGesture *panGesture; - QTapAndHoldGesture *tapAndHoldGesture; + TapAndHoldGesture *tapAndHoldGesture; QString path; QStringList files; diff --git a/examples/gestures/imageviewer/tapandholdgesture.cpp b/examples/gestures/imageviewer/tapandholdgesture.cpp new file mode 100644 index 0000000..ff5284e --- /dev/null +++ b/examples/gestures/imageviewer/tapandholdgesture.cpp @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "tapandholdgesture.h" + +#include <QtGui/qevent.h> + +/*! + \class TapAndHoldGesture + \since 4.6 + + \brief The TapAndHoldGesture class represents a Tap-and-Hold gesture, + providing additional information. +*/ + +const int TapAndHoldGesture::iterationCount = 40; +const int TapAndHoldGesture::iterationTimeout = 50; + +/*! + Creates a new Tap and Hold gesture handler object and marks it as a child + of \a parent. + + On some platforms like Windows there is a system-wide tap and hold gesture + that cannot be overriden, hence the gesture might never trigger and default + context menu will be shown instead. +*/ +TapAndHoldGesture::TapAndHoldGesture(QWidget *parent) + : QGesture(parent), iteration(0) +{ +} + +/*! \internal */ +bool TapAndHoldGesture::filterEvent(QEvent *event) +{ + if (!event->spontaneous()) + return false; + const QTouchEvent *ev = static_cast<const QTouchEvent*>(event); + switch (event->type()) { + case QEvent::TouchBegin: { + if (timer.isActive()) + timer.stop(); + timer.start(TapAndHoldGesture::iterationTimeout, this); + const QPoint p = ev->touchPoints().at(0).pos().toPoint(); + position = p; + break; + } + case QEvent::TouchUpdate: + if (ev->touchPoints().size() == 1) { + const QPoint startPos = ev->touchPoints().at(0).startPos().toPoint(); + const QPoint pos = ev->touchPoints().at(0).pos().toPoint(); + if ((startPos - pos).manhattanLength() > 15) + reset(); + } else { + reset(); + } + break; + case QEvent::TouchEnd: + reset(); + break; + default: + break; + } + return false; +} + +/*! \internal */ +void TapAndHoldGesture::timerEvent(QTimerEvent *event) +{ + if (event->timerId() != timer.timerId()) + return; + if (iteration == TapAndHoldGesture::iterationCount) { + timer.stop(); + setState(Qt::GestureFinished); + emit triggered(); + } else { + setState(Qt::GestureStarted); + emit triggered(); + } + ++iteration; +} + +/*! \internal */ +void TapAndHoldGesture::reset() +{ + if (state() != Qt::NoGesture) + emit cancelled(); + setState(Qt::NoGesture); + timer.stop(); + iteration = 0; +} + +/*! + \property TapAndHoldGesture::pos + + \brief The position of the gesture. +*/ +QPoint TapAndHoldGesture::pos() const +{ + return position; +} diff --git a/examples/gestures/imageviewer/tapandholdgesture.h b/examples/gestures/imageviewer/tapandholdgesture.h new file mode 100644 index 0000000..e0d50b5 --- /dev/null +++ b/examples/gestures/imageviewer/tapandholdgesture.h @@ -0,0 +1,73 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef TAPANDHOLDGESTURE_H +#define TAPANDHOLDGESTURE_H + +#include <QtCore/QBasicTimer> +#include <QtGui/QGesture> +#include <QtGui/QWidget> + +class TapAndHoldGesture : public QGesture +{ + Q_OBJECT + Q_PROPERTY(QPoint pos READ pos) + +public: + TapAndHoldGesture(QWidget *parent); + + bool filterEvent(QEvent *event); + void reset(); + + QPoint pos() const; + +protected: + void timerEvent(QTimerEvent *event); + +private: + QBasicTimer timer; + int iteration; + QPoint position; + static const int iterationCount; + static const int iterationTimeout; +}; + +#endif // TAPANDHOLDGESTURE_H diff --git a/examples/itemviews/frozencolumn/freezetablewidget.h b/examples/itemviews/frozencolumn/freezetablewidget.h index e22660e..f7b8e43 100644 --- a/examples/itemviews/frozencolumn/freezetablewidget.h +++ b/examples/itemviews/frozencolumn/freezetablewidget.h @@ -39,7 +39,6 @@ ** ****************************************************************************/ - #ifndef FREEZETABLEWIDGET_H #define FREEZETABLEWIDGET_H diff --git a/examples/itemviews/frozencolumn/main.cpp b/examples/itemviews/frozencolumn/main.cpp index 8ed9d3b..9f6a637 100644 --- a/examples/itemviews/frozencolumn/main.cpp +++ b/examples/itemviews/frozencolumn/main.cpp @@ -39,7 +39,6 @@ ** ****************************************************************************/ - #include <QApplication> #include <QStandardItemModel> #include <QFile> diff --git a/examples/multimedia/README b/examples/multimedia/README new file mode 100644 index 0000000..aa78e36 --- /dev/null +++ b/examples/multimedia/README @@ -0,0 +1,34 @@ + +The example launcher provided with Qt can be used to explore each of the +examples in this directory. + +Documentation for these examples can be found via the Tutorial and Examples +link in the main Qt documentation. + + +Finding the Qt Examples and Demos launcher +========================================== + +On Windows: + +The launcher can be accessed via the Windows Start menu. Select the menu +entry entitled "Qt Examples and Demos" entry in the submenu containing +the Qt tools. + +On Mac OS X: + +For the binary distribution, the qtdemo executable is installed in the +/Developer/Applications/Qt directory. For the source distribution, it is +installed alongside the other Qt tools on the path specified when Qt is +configured. + +On Unix/Linux: + +The qtdemo executable is installed alongside the other Qt tools on the path +specified when Qt is configured. + +On all platforms: + +The source code for the launcher can be found in the demos/qtdemo directory +in the Qt package. This example is built at the same time as the Qt libraries, +tools, examples, and demonstrations. diff --git a/examples/multimedia/audio/audio.pro b/examples/multimedia/audio/audio.pro new file mode 100644 index 0000000..c64bb34 --- /dev/null +++ b/examples/multimedia/audio/audio.pro @@ -0,0 +1,10 @@ +TEMPLATE = subdirs +SUBDIRS = audioinput \ + audiooutput \ + audiodevices + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS audio.pro README +sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio +INSTALLS += target sources diff --git a/examples/multimedia/audio/audiodevices/audiodevices.cpp b/examples/multimedia/audio/audiodevices/audiodevices.cpp new file mode 100644 index 0000000..2a3af98 --- /dev/null +++ b/examples/multimedia/audio/audiodevices/audiodevices.cpp @@ -0,0 +1,272 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QDebug> +#include <QAudioDeviceInfo> + +#include "audiodevices.h" + +AudioDevicesBase::AudioDevicesBase( QMainWindow *parent, Qt::WFlags f ) +{ + Q_UNUSED(parent) + Q_UNUSED(f) + setupUi( this ); +} + +AudioDevicesBase::~AudioDevicesBase() {} + + +AudioTest::AudioTest( QMainWindow *parent, Qt::WFlags f ) + : AudioDevicesBase( parent, f ) +{ + mode = QAudio::AudioOutput; + modeBox->addItem("Input"); + modeBox->addItem("Output"); + + connect(testButton,SIGNAL(clicked()),SLOT(test())); + connect(modeBox,SIGNAL(activated(int)),SLOT(modeChanged(int))); + connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int))); + connect(frequencyBox,SIGNAL(activated(int)),SLOT(freqChanged(int))); + connect(channelsBox,SIGNAL(activated(int)),SLOT(channelChanged(int))); + connect(codecsBox,SIGNAL(activated(int)),SLOT(codecChanged(int))); + connect(sampleSizesBox,SIGNAL(activated(int)),SLOT(sampleSizeChanged(int))); + connect(sampleTypesBox,SIGNAL(activated(int)),SLOT(sampleTypeChanged(int))); + connect(endianBox,SIGNAL(activated(int)),SLOT(endianChanged(int))); + + device = 0; + + modeBox->setCurrentIndex(0); + modeChanged(0); + deviceBox->setCurrentIndex(0); + deviceChanged(0); +} + +AudioTest::~AudioTest() +{ +} + +void AudioTest::test() +{ + // tries to set all the settings picked. + + if(device) { + if(device->isFormatSupported(settings)) { + logOutput->append("Success"); + nearestFreq->setText(""); + nearestChannel->setText(""); + nearestCodec->setText(""); + nearestSampleSize->setText(""); + nearestSampleType->setText(""); + nearestEndian->setText(""); + } else { + QAudioFormat nearest = device->nearestFormat(settings); + logOutput->append(tr("Failed")); + nearestFreq->setText(QString("%1").arg(nearest.frequency())); + nearestChannel->setText(QString("%1").arg(nearest.channels())); + nearestCodec->setText(nearest.codec()); + nearestSampleSize->setText(QString("%1").arg(nearest.sampleSize())); + + switch(nearest.sampleType()) { + case QAudioFormat::SignedInt: + nearestSampleType->setText("SignedInt"); + break; + case QAudioFormat::UnSignedInt: + nearestSampleType->setText("UnSignedInt"); + break; + case QAudioFormat::Float: + nearestSampleType->setText("Float"); + break; + case QAudioFormat::Unknown: + nearestSampleType->setText("Unknown"); + } + switch(nearest.byteOrder()) { + case QAudioFormat::LittleEndian: + nearestEndian->setText("LittleEndian"); + break; + case QAudioFormat::BigEndian: + nearestEndian->setText("BigEndian"); + } + } + } + else + logOutput->append("No Device"); +} + +void AudioTest::modeChanged(int idx) +{ + // mode has changed + if(idx == 0) + mode=QAudio::AudioInput; + else + mode=QAudio::AudioOutput; + + deviceBox->clear(); + QList<QAudioDeviceId> devices = QAudioDeviceInfo::deviceList(mode); + for(int i = 0; i < devices.size(); ++i) { + deviceBox->addItem(QAudioDeviceInfo(devices.at(i)).deviceName(), qVariantFromValue(devices.at(i))); + } +} + +void AudioTest::deviceChanged(int idx) +{ + delete device; + device = 0; + + if (deviceBox->count() == 0) + return; + + // device has changed + deviceHandle = deviceBox->itemData(idx).value<QAudioDeviceId>(); + device = new QAudioDeviceInfo(deviceHandle, this); + + frequencyBox->clear(); + QList<int> freqz = device->supportedFrequencies(); + for(int i = 0; i < freqz.size(); ++i) + frequencyBox->addItem(QString("%1").arg(freqz.at(i))); + if(freqz.size()) + settings.setFrequency(freqz.at(0)); + + channelsBox->clear(); + QList<int> chz = device->supportedChannels(); + for(int i = 0; i < chz.size(); ++i) + channelsBox->addItem(QString("%1").arg(chz.at(i))); + if(chz.size()) + settings.setChannels(chz.at(0)); + + codecsBox->clear(); + QStringList codecz = device->supportedCodecs(); + for(int i = 0; i < codecz.size(); ++i) + codecsBox->addItem(QString("%1").arg(codecz.at(i))); + if(codecz.size()) + settings.setCodec(codecz.at(0)); + // Add false to create failed condition! + codecsBox->addItem("audio/mpeg"); + + sampleSizesBox->clear(); + QList<int> sampleSizez = device->supportedSampleSizes(); + for(int i = 0; i < sampleSizez.size(); ++i) + sampleSizesBox->addItem(QString("%1").arg(sampleSizez.at(i))); + if(sampleSizez.size()) + settings.setSampleSize(sampleSizez.at(0)); + + sampleTypesBox->clear(); + QList<QAudioFormat::SampleType> sampleTypez = device->supportedSampleTypes(); + for(int i = 0; i < sampleTypez.size(); ++i) { + switch(sampleTypez.at(i)) { + case QAudioFormat::SignedInt: + sampleTypesBox->addItem("SignedInt"); + break; + case QAudioFormat::UnSignedInt: + sampleTypesBox->addItem("UnSignedInt"); + break; + case QAudioFormat::Float: + sampleTypesBox->addItem("Float"); + break; + case QAudioFormat::Unknown: + sampleTypesBox->addItem("Unknown"); + } + if(sampleTypez.size()) + settings.setSampleType(sampleTypez.at(0)); + } + + endianBox->clear(); + QList<QAudioFormat::Endian> endianz = device->supportedByteOrders(); + for(int i = 0; i < endianz.size(); ++i) { + switch(endianz.at(i)) { + case QAudioFormat::LittleEndian: + endianBox->addItem("Little Endian"); + break; + case QAudioFormat::BigEndian: + endianBox->addItem("Big Endian"); + break; + } + } + if(endianz.size()) + settings.setByteOrder(endianz.at(0)); +} + +void AudioTest::freqChanged(int idx) +{ + // freq has changed + settings.setFrequency(frequencyBox->itemText(idx).toInt()); +} + +void AudioTest::channelChanged(int idx) +{ + settings.setChannels(channelsBox->itemText(idx).toInt()); +} + +void AudioTest::codecChanged(int idx) +{ + settings.setCodec(codecsBox->itemText(idx)); +} + +void AudioTest::sampleSizeChanged(int idx) +{ + settings.setSampleSize(sampleSizesBox->itemText(idx).toInt()); +} + +void AudioTest::sampleTypeChanged(int idx) +{ + switch(sampleTypesBox->itemText(idx).toInt()) { + case QAudioFormat::SignedInt: + settings.setSampleType(QAudioFormat::SignedInt); + break; + case QAudioFormat::UnSignedInt: + settings.setSampleType(QAudioFormat::UnSignedInt); + break; + case QAudioFormat::Float: + settings.setSampleType(QAudioFormat::Float); + } +} + +void AudioTest::endianChanged(int idx) +{ + switch(endianBox->itemText(idx).toInt()) { + case QAudioFormat::LittleEndian: + settings.setByteOrder(QAudioFormat::LittleEndian); + break; + case QAudioFormat::BigEndian: + settings.setByteOrder(QAudioFormat::BigEndian); + } +} + diff --git a/examples/multimedia/audio/audiodevices/audiodevices.h b/examples/multimedia/audio/audiodevices/audiodevices.h new file mode 100644 index 0000000..34a531b --- /dev/null +++ b/examples/multimedia/audio/audiodevices/audiodevices.h @@ -0,0 +1,79 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QObject> +#include <QMainWindow> +#include <QAudioDeviceInfo> + +#include "ui_audiodevicesbase.h" + +class AudioDevicesBase : public QMainWindow, public Ui::AudioDevicesBase +{ +public: + AudioDevicesBase( QMainWindow *parent = 0, Qt::WFlags f = 0 ); + virtual ~AudioDevicesBase(); +}; + +class AudioTest : public AudioDevicesBase +{ + Q_OBJECT +public: + AudioTest( QMainWindow *parent = 0, Qt::WFlags f = 0 ); + virtual ~AudioTest(); + + QAudioDeviceId deviceHandle; + QAudioDeviceInfo* device; + QAudioFormat settings; + QAudio::Mode mode; + +private slots: + void modeChanged(int idx); + void deviceChanged(int idx); + void freqChanged(int idx); + void channelChanged(int idx); + void codecChanged(int idx); + void sampleSizeChanged(int idx); + void sampleTypeChanged(int idx); + void endianChanged(int idx); + void test(); +}; + diff --git a/examples/multimedia/audio/audiodevices/audiodevices.pro b/examples/multimedia/audio/audiodevices/audiodevices.pro new file mode 100644 index 0000000..adc4890 --- /dev/null +++ b/examples/multimedia/audio/audiodevices/audiodevices.pro @@ -0,0 +1,12 @@ +HEADERS = audiodevices.h +SOURCES = audiodevices.cpp \ + main.cpp +FORMS += audiodevicesbase.ui + +QT += multimedia + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audiodevices +sources.files = $$SOURCES *.h $$RESOURCES $$FORMS audiodevices.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audiodevices +INSTALLS += target sources diff --git a/examples/multimedia/audio/audiodevices/audiodevicesbase.ui b/examples/multimedia/audio/audiodevices/audiodevicesbase.ui new file mode 100644 index 0000000..674f201 --- /dev/null +++ b/examples/multimedia/audio/audiodevices/audiodevicesbase.ui @@ -0,0 +1,255 @@ +<ui version="4.0" > + <class>AudioDevicesBase</class> + <widget class="QMainWindow" name="AudioDevicesBase" > + <property name="geometry" > + <rect> + <x>0</x> + <y>0</y> + <width>504</width> + <height>702</height> + </rect> + </property> + <property name="windowTitle" > + <string>AudioDevicesBase</string> + </property> + <widget class="QWidget" name="centralwidget" > + <property name="geometry" > + <rect> + <x>0</x> + <y>28</y> + <width>504</width> + <height>653</height> + </rect> + </property> + <widget class="QWidget" name="layoutWidget" > + <property name="geometry" > + <rect> + <x>40</x> + <y>21</y> + <width>321</width> + <height>506</height> + </rect> + </property> + <layout class="QGridLayout" name="gridLayout" > + <item row="0" column="0" > + <widget class="QLabel" name="deviceLabel" > + <property name="sizePolicy" > + <sizepolicy vsizetype="Preferred" hsizetype="Preferred" > + <horstretch>1</horstretch> + <verstretch>0</verstretch> + </sizepolicy> + </property> + <property name="text" > + <string>Device</string> + </property> + </widget> + </item> + <item row="0" column="1" > + <widget class="QLabel" name="modeLabel" > + <property name="text" > + <string>Mode</string> + </property> + </widget> + </item> + <item row="1" column="0" > + <widget class="QComboBox" name="deviceBox" /> + </item> + <item row="1" column="1" > + <widget class="QComboBox" name="modeBox" /> + </item> + <item row="2" column="0" > + <widget class="QLabel" name="actualLabel" > + <property name="frameShape" > + <enum>QFrame::Panel</enum> + </property> + <property name="frameShadow" > + <enum>QFrame::Raised</enum> + </property> + <property name="text" > + <string>Actual Settings</string> + </property> + <property name="alignment" > + <set>Qt::AlignCenter</set> + </property> + </widget> + </item> + <item row="2" column="1" > + <widget class="QLabel" name="nearestLabel" > + <property name="frameShape" > + <enum>QFrame::Panel</enum> + </property> + <property name="frameShadow" > + <enum>QFrame::Raised</enum> + </property> + <property name="text" > + <string>Nearest Settings</string> + </property> + <property name="alignment" > + <set>Qt::AlignCenter</set> + </property> + </widget> + </item> + <item row="3" column="0" > + <widget class="QLabel" name="actualFreqLabel" > + <property name="text" > + <string>Frequency</string> + </property> + </widget> + </item> + <item row="3" column="1" > + <widget class="QLabel" name="nearestFreqLabel" > + <property name="text" > + <string>Frequency</string> + </property> + </widget> + </item> + <item row="4" column="0" > + <widget class="QComboBox" name="frequencyBox" /> + </item> + <item row="4" column="1" > + <widget class="QLineEdit" name="nearestFreq" /> + </item> + <item row="5" column="0" > + <widget class="QLabel" name="actualChannelsLabel" > + <property name="text" > + <string>Channels</string> + </property> + </widget> + </item> + <item row="5" column="1" > + <widget class="QLabel" name="nearestChannelLabel" > + <property name="text" > + <string>Channel</string> + </property> + </widget> + </item> + <item row="6" column="0" > + <widget class="QComboBox" name="channelsBox" /> + </item> + <item row="6" column="1" > + <widget class="QLineEdit" name="nearestChannel" /> + </item> + <item row="7" column="0" > + <widget class="QLabel" name="actualCodecLabel" > + <property name="text" > + <string>Codecs</string> + </property> + </widget> + </item> + <item row="7" column="1" > + <widget class="QLabel" name="nearestCodecLabel" > + <property name="text" > + <string>Codec</string> + </property> + </widget> + </item> + <item row="8" column="0" > + <widget class="QComboBox" name="codecsBox" /> + </item> + <item row="8" column="1" > + <widget class="QLineEdit" name="nearestCodec" /> + </item> + <item row="9" column="0" > + <widget class="QLabel" name="actualSampleSizeLabel" > + <property name="text" > + <string>SampleSize</string> + </property> + </widget> + </item> + <item row="9" column="1" > + <widget class="QLabel" name="nearestSampleSizeLabel" > + <property name="text" > + <string>SampleSize</string> + </property> + </widget> + </item> + <item row="10" column="0" > + <widget class="QComboBox" name="sampleSizesBox" /> + </item> + <item row="10" column="1" > + <widget class="QLineEdit" name="nearestSampleSize" /> + </item> + <item row="11" column="0" > + <widget class="QLabel" name="actualSampleTypeLabel" > + <property name="text" > + <string>SampleType</string> + </property> + </widget> + </item> + <item row="11" column="1" > + <widget class="QLabel" name="nearestSampleTypeLabel" > + <property name="text" > + <string>SampleType</string> + </property> + </widget> + </item> + <item row="12" column="0" > + <widget class="QComboBox" name="sampleTypesBox" /> + </item> + <item row="12" column="1" > + <widget class="QLineEdit" name="nearestSampleType" /> + </item> + <item row="13" column="0" > + <widget class="QLabel" name="actualEndianLabel" > + <property name="text" > + <string>Endianess</string> + </property> + </widget> + </item> + <item row="13" column="1" > + <widget class="QLabel" name="nearestEndianLabel" > + <property name="text" > + <string>Endianess</string> + </property> + </widget> + </item> + <item row="14" column="0" > + <widget class="QComboBox" name="endianBox" /> + </item> + <item row="14" column="1" > + <widget class="QLineEdit" name="nearestEndian" /> + </item> + <item row="15" column="0" colspan="2" > + <widget class="QTextEdit" name="logOutput" > + <property name="minimumSize" > + <size> + <width>0</width> + <height>40</height> + </size> + </property> + </widget> + </item> + <item row="16" column="0" colspan="2" > + <widget class="QPushButton" name="testButton" > + <property name="text" > + <string>Test</string> + </property> + </widget> + </item> + </layout> + </widget> + </widget> + <widget class="QMenuBar" name="menubar" > + <property name="geometry" > + <rect> + <x>0</x> + <y>0</y> + <width>504</width> + <height>28</height> + </rect> + </property> + </widget> + <widget class="QStatusBar" name="statusbar" > + <property name="geometry" > + <rect> + <x>0</x> + <y>681</y> + <width>504</width> + <height>21</height> + </rect> + </property> + </widget> + </widget> + <resources/> + <connections/> +</ui> diff --git a/examples/multimedia/audio/audiodevices/main.cpp b/examples/multimedia/audio/audiodevices/main.cpp new file mode 100644 index 0000000..12e413e --- /dev/null +++ b/examples/multimedia/audio/audiodevices/main.cpp @@ -0,0 +1,55 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#include "audiodevices.h" + +int main(int argv, char **args) +{ + QApplication app(argv, args); + app.setApplicationName("Audio Device Test"); + + AudioTest audio; + audio.show(); + + return app.exec(); +} diff --git a/examples/multimedia/audio/audioinput/audioinput.cpp b/examples/multimedia/audio/audioinput/audioinput.cpp new file mode 100644 index 0000000..ae7d84c --- /dev/null +++ b/examples/multimedia/audio/audioinput/audioinput.cpp @@ -0,0 +1,376 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <stdlib.h> +#include <math.h> + +#include <QDebug> +#include <QPainter> +#include <QVBoxLayout> + +#include <QAudioDeviceInfo> +#include <QAudioInput> +#include "audioinput.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +Spectrum::Spectrum(QObject* parent, QAudioInput* device, float* out) + :QIODevice( parent ) +{ + input = device; + output = out; + + unsigned int i; + + // Allocate sample buffer and initialize sin and cos lookup tables + fftState = (fft_state *) malloc (sizeof(fft_state)); + + for(i = 0; i < BUFFER_SIZE; i++) { + bitReverse[i] = reverseBits(i); + } + for(i = 0; i < BUFFER_SIZE / 2; i++) { + float j = 2 * M_PI * i / BUFFER_SIZE; + costable[i] = cos(j); + sintable[i] = sin(j); + } +} + +Spectrum::~Spectrum() +{ +} + +void Spectrum::start() +{ + open(QIODevice::WriteOnly); +} + +void Spectrum::stop() +{ + close(); +} + +qint64 Spectrum::readData(char *data, qint64 maxlen) +{ + Q_UNUSED(data) + Q_UNUSED(maxlen) + + return 0; +} + +qint64 Spectrum::writeData(const char *data, qint64 len) +{ + performFFT((sound_sample*)data); + emit update(); + + return len; +} + +int Spectrum::reverseBits(unsigned int initial) { + // BIT-REVERSE-COPY(a,A) + + unsigned int reversed = 0, loop; + for(loop = 0; loop < BUFFER_SIZE_LOG; loop++) { + reversed <<= 1; + reversed += (initial & 1); + initial >>= 1; + } + return reversed; +} + +void Spectrum::performFFT(const sound_sample *input) { + /* Convert to reverse bit order for FFT */ + prepFFT(input, fftState->real, fftState->imag); + + /* Calculate FFT */ + calcFFT(fftState->real, fftState->imag); + + /* Convert FFT to intensities */ + outputFFT(fftState->real, fftState->imag); +} + +void Spectrum::prepFFT(const sound_sample *input, float * re, float * im) { + unsigned int i; + float *realptr = re; + float *imagptr = im; + + /* Get input, in reverse bit order */ + for(i = 0; i < BUFFER_SIZE; i++) { + *realptr++ = input[bitReverse[i]]; + *imagptr++ = 0; + } +} + +void Spectrum::calcFFT(float * re, float * im) { + unsigned int i, j, k; + unsigned int exchanges; + float fact_real, fact_imag; + float tmp_real, tmp_imag; + unsigned int factfact; + + /* Set up some variables to reduce calculation in the loops */ + exchanges = 1; + factfact = BUFFER_SIZE / 2; + + /* divide and conquer method */ + for(i = BUFFER_SIZE_LOG; i != 0; i--) { + for(j = 0; j != exchanges; j++) { + fact_real = costable[j * factfact]; + fact_imag = sintable[j * factfact]; + for(k = j; k < BUFFER_SIZE; k += exchanges << 1) { + int k1 = k + exchanges; + tmp_real = fact_real * re[k1] - fact_imag * im[k1]; + tmp_imag = fact_real * im[k1] + fact_imag * re[k1]; + re[k1] = re[k] - tmp_real; + im[k1] = im[k] - tmp_imag; + re[k] += tmp_real; + im[k] += tmp_imag; + } + } + exchanges <<= 1; + factfact >>= 1; + } +} + +void Spectrum::outputFFT(const float * re, const float * im) { + const float *realptr = re; + const float *imagptr = im; + float *outputptr = output; + + float *endptr = output + BUFFER_SIZE / 2; + + /* Convert FFT to intensities */ + + while(outputptr <= endptr) { + *outputptr = (*realptr * *realptr) + (*imagptr * *imagptr); + outputptr++; realptr++; imagptr++; + } + *output /= 4; + *endptr /= 4; +} + + +RenderArea::RenderArea(QWidget *parent) + : QWidget(parent) +{ + setBackgroundRole(QPalette::Base); + setAutoFillBackground(true); + + samples = 0; + sampleSize = 0; + setMinimumHeight(30); + setMinimumWidth(200); +} + +void RenderArea::paintEvent(QPaintEvent * /* event */) +{ + QPainter painter(this); + + if(sampleSize == 0) + return; + + painter.setPen(Qt::red); + int max = 0; + for(int i=0;i<sampleSize;i++) { + int m = (int)(sqrt(samples[i])/32768); + if(m > max) + max = m; + } + int x1,y1,x2,y2; + + for(int i=0;i<10;i++) { + x1 = painter.viewport().left()+11; + y1 = painter.viewport().top()+10+i; + x2 = painter.viewport().right()-20-max; + y2 = painter.viewport().top()+10+i; + if(x2 < painter.viewport().left()+10) + x2 = painter.viewport().left()+10; + + painter.drawLine(QPoint(x1,y1),QPoint(x2,y2)); + } + + painter.setPen(Qt::black); + painter.drawRect(QRect(painter.viewport().left()+10, painter.viewport().top()+10, + painter.viewport().right()-20, painter.viewport().bottom()-20)); +} + +void RenderArea::spectrum(float* output, int size) +{ + samples = output; + sampleSize = size; + repaint(); +} + + +InputTest::InputTest() +{ + QWidget *window = new QWidget; + QVBoxLayout* layout = new QVBoxLayout; + + canvas = new RenderArea; + layout->addWidget(canvas); + + deviceBox = new QComboBox(this); + QList<QAudioDeviceId> devices = QAudioDeviceInfo::deviceList(QAudio::AudioInput); + for(int i = 0; i < devices.size(); ++i) { + deviceBox->addItem(QAudioDeviceInfo(devices.at(i)).deviceName(), qVariantFromValue(devices.at(i))); + } + connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int))); + layout->addWidget(deviceBox); + + button = new QPushButton(this); + button->setText(tr("Click for Push Mode")); + connect(button,SIGNAL(clicked()),SLOT(toggleMode())); + layout->addWidget(button); + + button2 = new QPushButton(this); + button2->setText(tr("Click To Suspend")); + connect(button2,SIGNAL(clicked()),SLOT(toggleSuspend())); + layout->addWidget(button2); + + window->setLayout(layout); + setCentralWidget(window); + window->show(); + + buffer = new char[BUFFER_SIZE*10]; + output = new float[1024]; + + pullMode = true; + + format.setFrequency(8000); + format.setChannels(1); + format.setSampleSize(8); + format.setSampleType(QAudioFormat::UnSignedInt); + format.setByteOrder(QAudioFormat::LittleEndian); + format.setCodec("audio/pcm"); + + audioInput = new QAudioInput(format,this); + connect(audioInput,SIGNAL(notify()),SLOT(status())); + connect(audioInput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State))); + spec = new Spectrum(this,audioInput,output); + connect(spec,SIGNAL(update()),SLOT(refreshDisplay())); + spec->start(); + audioInput->start(spec); +} + +InputTest::~InputTest() {} + +void InputTest::status() +{ + qWarning()<<"bytesReady = "<<audioInput->bytesReady()<<" bytes, clock = "<<audioInput->clock()<<"ms, totalTime = "<<audioInput->totalTime()/1000<<"ms"; +} + +void InputTest::readMore() +{ + if(!audioInput) + return; + qint64 len = audioInput->bytesReady(); + if(len > BUFFER_SIZE*10) + len = BUFFER_SIZE*10; + qint64 l = input->read(buffer,len); + if(l > 0) { + spec->write(buffer,l); + } +} + +void InputTest::toggleMode() +{ + // Change bewteen pull and push modes + audioInput->stop(); + + if(pullMode) { + button->setText(tr("Click for Push Mode")); + input = audioInput->start(0); + connect(input,SIGNAL(readyRead()),SLOT(readMore())); + pullMode = false; + } else { + button->setText(tr("Click for Pull Mode")); + pullMode = true; + audioInput->start(spec); + } +} + +void InputTest::toggleSuspend() +{ + // toggle suspend/resume + if(audioInput->state() == QAudio::SuspendState) { + qWarning()<<"status: Suspended, resume()"; + audioInput->resume(); + button2->setText("Click To Suspend"); + } else if (audioInput->state() == QAudio::ActiveState) { + qWarning()<<"status: Active, suspend()"; + audioInput->suspend(); + button2->setText("Click To Resume"); + } else if (audioInput->state() == QAudio::StopState) { + qWarning()<<"status: Stopped, resume()"; + audioInput->resume(); + button2->setText("Click To Suspend"); + } else if (audioInput->state() == QAudio::IdleState) { + qWarning()<<"status: IdleState"; + } +} + +void InputTest::state(QAudio::State state) +{ + qWarning()<<" state="<<state; +} + +void InputTest::refreshDisplay() +{ + canvas->spectrum(output,256); + canvas->repaint(); +} + +void InputTest::deviceChanged(int idx) +{ + spec->stop(); + audioInput->stop(); + audioInput->disconnect(this); + delete audioInput; + + device = deviceBox->itemData(idx).value<QAudioDeviceId>(); + audioInput = new QAudioInput(device, format, this); + connect(audioInput,SIGNAL(notify()),SLOT(status())); + connect(audioInput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State))); + spec->start(); + audioInput->start(spec); +} diff --git a/examples/multimedia/audio/audioinput/audioinput.h b/examples/multimedia/audio/audioinput/audioinput.h new file mode 100644 index 0000000..3a6b356 --- /dev/null +++ b/examples/multimedia/audio/audioinput/audioinput.h @@ -0,0 +1,144 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QPixmap> +#include <QWidget> +#include <QObject> +#include <QMainWindow> +#include <QPushButton> +#include <QComboBox> + +#include <qaudioinput.h> + +#define BUFFER_SIZE_LOG 9 +#define BUFFER_SIZE (1 << BUFFER_SIZE_LOG) + +struct _struct_fft_state { + float real[BUFFER_SIZE]; + float imag[BUFFER_SIZE]; +}; +typedef _struct_fft_state fft_state; +typedef short int sound_sample; + +class Spectrum : public QIODevice +{ + Q_OBJECT +public: + Spectrum(QObject* parent, QAudioInput* device, float* out); + ~Spectrum(); + + void start(); + void stop(); + + qint64 readData(char *data, qint64 maxlen); + qint64 writeData(const char *data, qint64 len); + + QAudioInput* input; + float* output; + fft_state* fftState; + + unsigned int bitReverse[BUFFER_SIZE]; + float sintable[BUFFER_SIZE / 2]; + float costable[BUFFER_SIZE / 2]; + + void prepFFT (const sound_sample *input, float *re, float *im); + void calcFFT (float *re, float *im); + void outputFFT (const float *re, const float *im); + int reverseBits (unsigned int initial); + void performFFT (const sound_sample *input); + +signals: + void update(); +}; + + +class RenderArea : public QWidget +{ + Q_OBJECT + +public: + RenderArea(QWidget *parent = 0); + + void spectrum(float* output, int size); + +protected: + void paintEvent(QPaintEvent *event); + +private: + QPixmap pixmap; + + float* samples; + int sampleSize; +}; + +class InputTest : public QMainWindow +{ + Q_OBJECT +public: + InputTest(); + ~InputTest(); + + QAudioDeviceId device; + QAudioFormat format; + QAudioInput* audioInput; + Spectrum* spec; + QIODevice* input; + RenderArea* canvas; + + bool pullMode; + + QPushButton* button; + QPushButton* button2; + QComboBox* deviceBox; + + char* buffer; + float* output; + +private slots: + void refreshDisplay(); + void status(); + void readMore(); + void toggleMode(); + void toggleSuspend(); + void state(QAudio::State s); + void deviceChanged(int idx); +}; + diff --git a/examples/multimedia/audio/audioinput/audioinput.pro b/examples/multimedia/audio/audioinput/audioinput.pro new file mode 100644 index 0000000..d930750 --- /dev/null +++ b/examples/multimedia/audio/audioinput/audioinput.pro @@ -0,0 +1,12 @@ +HEADERS = audioinput.h +SOURCES = audioinput.cpp \ + main.cpp + +QT += multimedia + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audioinput +sources.files = $$SOURCES *.h $$RESOURCES $$FORMS audioinput.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audioinput +INSTALLS += target sources + diff --git a/examples/multimedia/audio/audioinput/main.cpp b/examples/multimedia/audio/audioinput/main.cpp new file mode 100644 index 0000000..64a9b04 --- /dev/null +++ b/examples/multimedia/audio/audioinput/main.cpp @@ -0,0 +1,55 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#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(); +} diff --git a/examples/multimedia/audio/audiooutput/audiooutput.cpp b/examples/multimedia/audio/audiooutput/audiooutput.cpp new file mode 100644 index 0000000..be26f19 --- /dev/null +++ b/examples/multimedia/audio/audiooutput/audiooutput.cpp @@ -0,0 +1,280 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QDebug> +#include <QVBoxLayout> + +#include <QAudioOutput> +#include <QAudioDeviceInfo> +#include "audiooutput.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +Generator::Generator(QObject *parent) + :QIODevice( parent ) +{ + finished = false; + buffer = new char[SECONDS*44100*4+1000]; + t=buffer; + len=fillData(t+4,450,SECONDS); /* left channel, 450Hz sine */ + len+=fillData(t+6,452,SECONDS); /* right channel, 452Hz sine */ + putLong(t,len); + putLong(buffer+4,len+8+16+8); + pos = 0; + total = len+8+16+8; +} + +Generator::~Generator() +{ + delete [] buffer; +} + +void Generator::start() +{ + open(QIODevice::ReadOnly); +} + +void Generator::stop() +{ + close(); +} + +int Generator::putShort(char *t, unsigned int value) +{ + *(unsigned char *)(t++)=value&255; + *(unsigned char *)(t)=(value/256)&255; + return 2; +} + +int Generator::putLong(char *t, unsigned int value) +{ + *(unsigned char *)(t++)=value&255; + *(unsigned char *)(t++)=(value/256)&255; + *(unsigned char *)(t++)=(value/(256*256))&255; + *(unsigned char *)(t)=(value/(256*256*256))&255; + return 4; +} + +int Generator::fillData(char *start, int frequency, int seconds) +{ + int i, len=0; + int value; + for(i=0; i<seconds*44100; i++) { + value=(int)(32767.0*sin(2.0*M_PI*((double)(i))*(double)(frequency)/44100.0)); + putShort(start, value); + start += 4; + len+=2; + } + return len; +} + +qint64 Generator::readData(char *data, qint64 maxlen) +{ + int len = maxlen; + if(len > 16384) + len = 16384; + + if(len < (SECONDS*44100*4+1000)-pos) { + // Normal + memcpy(data,t+pos,len); + pos+=len; + return len; + } else { + // Whats left and reset to start + qint64 left = (SECONDS*44100*4+1000)-pos; + memcpy(data,t+pos,left); + pos=0; + return left; + } +} + +qint64 Generator::writeData(const char *data, qint64 len) +{ + Q_UNUSED(data); + Q_UNUSED(len); + + return 0; +} + +AudioTest::AudioTest() +{ + QWidget *window = new QWidget; + QVBoxLayout* layout = new QVBoxLayout; + + deviceBox = new QComboBox(this); + QList<QAudioDeviceId> devices = QAudioDeviceInfo::deviceList(QAudio::AudioOutput); + for(int i = 0; i < devices.size(); ++i) { + deviceBox->addItem(QAudioDeviceInfo(devices.at(i)).deviceName(), qVariantFromValue(devices.at(i))); + } + connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int))); + layout->addWidget(deviceBox); + + button = new QPushButton(this); + button->setText(tr("Click for Push Mode")); + connect(button,SIGNAL(clicked()),SLOT(toggle())); + layout->addWidget(button); + + button2 = new QPushButton(this); + button2->setText(tr("Click To Suspend")); + connect(button2,SIGNAL(clicked()),SLOT(togglePlay())); + layout->addWidget(button2); + + window->setLayout(layout); + setCentralWidget(window); + window->show(); + + buffer = new char[BUFFER_SIZE]; + + gen = new Generator(this); + + pullMode = true; + + timer = new QTimer(this); + connect(timer,SIGNAL(timeout()),SLOT(writeMore())); + + gen->start(); + + settings.setFrequency(44100); + settings.setChannels(2); + settings.setSampleSize(16); + settings.setCodec("audio/pcm"); + settings.setByteOrder(QAudioFormat::LittleEndian); + settings.setSampleType(QAudioFormat::SignedInt); + audioOutput = new QAudioOutput(settings,this); + connect(audioOutput,SIGNAL(notify()),SLOT(status())); + connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State))); + + audioOutput->start(gen); +} + +AudioTest::~AudioTest() +{ + delete [] buffer; +} + +void AudioTest::deviceChanged(int idx) +{ + timer->stop(); + gen->stop(); + audioOutput->stop(); + audioOutput->disconnect(this); + delete audioOutput; + + device = deviceBox->itemData(idx).value<QAudioDeviceId>(); + audioOutput = new QAudioOutput(device,settings,this); + connect(audioOutput,SIGNAL(notify()),SLOT(status())); + connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State))); + gen->start(); + audioOutput->start(gen); +} + +void AudioTest::status() +{ + qWarning()<<"byteFree = "<<audioOutput->bytesFree()<<" bytes, clock = "<<audioOutput->clock()<<"ms, totalTime = "<<audioOutput->totalTime()/1000<<"ms"; +} + +void AudioTest::writeMore() +{ + if(!audioOutput) + return; + + if(audioOutput->state() == QAudio::StopState) + return; + + int l; + int out; + + int chunks = audioOutput->bytesFree()/audioOutput->periodSize(); + while(chunks) { + l = gen->read(buffer,audioOutput->periodSize()); + if(l > 0) + out = output->write(buffer,l); + if(l != audioOutput->periodSize()) + break; + chunks--; + } +} + +void AudioTest::toggle() +{ + // Change between pull and push modes + + timer->stop(); + audioOutput->stop(); + + if (pullMode) { + button->setText("Click for Pull Mode"); + output = audioOutput->start(0); + pullMode = false; + timer->start(20); + } else { + button->setText("Click for Push Mode"); + pullMode = true; + audioOutput->start(gen); + } +} + +void AudioTest::togglePlay() +{ + // toggle suspend/resume + if(audioOutput->state() == QAudio::SuspendState) { + qWarning()<<"status: Suspended, resume()"; + audioOutput->resume(); + button2->setText("Click To Suspend"); + } else if (audioOutput->state() == QAudio::ActiveState) { + qWarning()<<"status: Active, suspend()"; + audioOutput->suspend(); + button2->setText("Click To Resume"); + } else if (audioOutput->state() == QAudio::StopState) { + qWarning()<<"status: Stopped, resume()"; + audioOutput->resume(); + button2->setText("Click To Suspend"); + } else if (audioOutput->state() == QAudio::IdleState) { + qWarning()<<"status: IdleState"; + } +} + +void AudioTest::state(QAudio::State state) +{ + qWarning()<<" state="<<state; +} diff --git a/examples/multimedia/audio/audiooutput/audiooutput.h b/examples/multimedia/audio/audiooutput/audiooutput.h new file mode 100644 index 0000000..1e21b48 --- /dev/null +++ b/examples/multimedia/audio/audiooutput/audiooutput.h @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <math.h> + +#define BUFFER_SIZE 32768 +#define SECONDS 3 + +#include <QObject> +#include <QMainWindow> +#include <QIODevice> +#include <QTimer> +#include <QPushButton> +#include <QComboBox> + +#include <QAudioOutput> + +class Generator : public QIODevice +{ + Q_OBJECT +public: + Generator(QObject *parent); + ~Generator(); + + void start(); + void stop(); + + char *t; + int len; + int pos; + int total; + char *buffer; + bool finished; + int chunk_size; + + qint64 readData(char *data, qint64 maxlen); + qint64 writeData(const char *data, qint64 len); + +private: + int putShort(char *t, unsigned int value); + int putLong(char *t, unsigned int value); + int fillData(char *start, int frequency, int seconds); +}; + +class AudioTest : public QMainWindow +{ + Q_OBJECT +public: + AudioTest(); + ~AudioTest(); + + QAudioDeviceId device; + Generator* gen; + QAudioOutput* audioOutput; + QIODevice* output; + QTimer* timer; + QAudioFormat settings; + + bool pullMode; + char* buffer; + + QPushButton* button; + QPushButton* button2; + QComboBox* deviceBox; + +private slots: + void status(); + void writeMore(); + void toggle(); + void togglePlay(); + void state(QAudio::State s); + void deviceChanged(int idx); +}; + diff --git a/examples/multimedia/audio/audiooutput/audiooutput.pro b/examples/multimedia/audio/audiooutput/audiooutput.pro new file mode 100644 index 0000000..08f43ce --- /dev/null +++ b/examples/multimedia/audio/audiooutput/audiooutput.pro @@ -0,0 +1,11 @@ +HEADERS = audiooutput.h +SOURCES = audiooutput.cpp \ + main.cpp + +QT += multimedia + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audiooutput +sources.files = $$SOURCES *.h $$RESOURCES $$FORMS audiooutput.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audio/audiooutput +INSTALLS += target sources diff --git a/examples/multimedia/audio/audiooutput/main.cpp b/examples/multimedia/audio/audiooutput/main.cpp new file mode 100644 index 0000000..fc319bd --- /dev/null +++ b/examples/multimedia/audio/audiooutput/main.cpp @@ -0,0 +1,56 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QtGui> + +#include "audiooutput.h" + +int main(int argv, char **args) +{ + QApplication app(argv, args); + app.setApplicationName("Audio Output Test"); + + AudioTest audio; + audio.show(); + + return app.exec(); +} diff --git a/examples/multimedia/multimedia.pro b/examples/multimedia/multimedia.pro new file mode 100644 index 0000000..ac78b15 --- /dev/null +++ b/examples/multimedia/multimedia.pro @@ -0,0 +1,8 @@ +TEMPLATE = subdirs +SUBDIRS = audio + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/multimedia +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS multimedia.pro README +sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia +INSTALLS += target sources |