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Diffstat (limited to 'src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp')
| -rw-r--r-- | src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp b/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp new file mode 100644 index 000000000..e0f136910 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include <qaudiorecorder.h> +#include <qmediaservice.h> + +#include <QtMultimedia/qaudioformat.h> + +#include "audiorecorder.h" + +AudioRecorder::AudioRecorder() +{ +//! [create-objs-1] + capture = new QAudioRecorder(); +//! [create-objs-1] + + // set a default file + capture->setOutputLocation(QUrl("test.raw")); + + QWidget *window = new QWidget; + QGridLayout* layout = new QGridLayout; + + QLabel* deviceLabel = new QLabel; + deviceLabel->setText("Devices"); + deviceBox = new QComboBox(this); + deviceBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + + QLabel* codecLabel = new QLabel; + codecLabel->setText("Codecs"); + codecsBox = new QComboBox(this); + codecsBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + + QLabel* qualityLabel = new QLabel; + qualityLabel->setText("Quality"); + qualityBox = new QComboBox(this); + qualityBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + +//! [device-list] + for(int i = 0; i < audiosource->deviceCount(); i++) + deviceBox->addItem(audiosource->name(i)); +//! [device-list] + +//! [codec-list] + QStringList codecs = capture->supportedAudioCodecs(); + for(int i = 0; i < codecs.count(); i++) + codecsBox->addItem(codecs.at(i)); +//! [codec-list] + + qualityBox->addItem("Low"); + qualityBox->addItem("Medium"); + qualityBox->addItem("High"); + + connect(capture, SIGNAL(durationChanged(qint64)), this, SLOT(updateProgress(qint64))); + connect(capture, SIGNAL(stateChanged(QMediaRecorder::State)), this, SLOT(stateChanged(QMediaRecorder::State))); + + layout->addWidget(deviceLabel,0,0,Qt::AlignHCenter); + connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int))); + layout->addWidget(deviceBox,0,1,1,3,Qt::AlignLeft); + + layout->addWidget(codecLabel,1,0,Qt::AlignHCenter); + connect(codecsBox,SIGNAL(activated(int)),SLOT(codecChanged(int))); + layout->addWidget(codecsBox,1,1,Qt::AlignLeft); + + layout->addWidget(qualityLabel,1,2,Qt::AlignHCenter); + connect(qualityBox,SIGNAL(activated(int)),SLOT(qualityChanged(int))); + layout->addWidget(qualityBox,1,3,Qt::AlignLeft); + + fileButton = new QPushButton(this); + fileButton->setText(tr("Output File")); + connect(fileButton,SIGNAL(clicked()),SLOT(selectOutputFile())); + layout->addWidget(fileButton,3,0,Qt::AlignHCenter); + + button = new QPushButton(this); + button->setText(tr("Record")); + connect(button,SIGNAL(clicked()),SLOT(toggleRecord())); + layout->addWidget(button,3,3,Qt::AlignHCenter); + + recTime = new QLabel; + recTime->setText("0 sec"); + layout->addWidget(recTime,4,0,Qt::AlignHCenter); + + window->setLayout(layout); + setCentralWidget(window); + window->show(); + + active = false; +} + +AudioRecorder::~AudioRecorder() +{ + delete capture; + delete audiosource; +} + +void AudioRecorder::updateProgress(qint64 pos) +{ + currentTime = pos; + if(currentTime == 0) currentTime = 1; + QString text = QString("%1 secs").arg(currentTime/1000); + recTime->setText(text); +} + +void AudioRecorder::stateChanged(QMediaRecorder::State state) +{ + qWarning()<<"stateChanged() "<<state; +} + +void AudioRecorder::deviceChanged(int idx) +{ +//! [get-device] + for(int i = 0; i < audiosource->deviceCount(); i++) { + if(deviceBox->itemText(idx).compare(audiosource->name(i)) == 0) + audiosource->setSelectedDevice(i); + } +//! [get-device] +} + +void AudioRecorder::codecChanged(int idx) +{ + Q_UNUSED(idx); + //capture->setAudioCodec(codecsBox->itemText(idx)); +} + +void AudioRecorder::qualityChanged(int idx) +{ + Q_UNUSED(idx); + /* + if(capture->audioCodec().compare("audio/pcm") == 0) { + if(qualityBox->itemText(idx).compare("Low") == 0) { + // 8000Hz mono is 8kbps + capture->setAudioBitrate(8); + } else if(qualityBox->itemText(idx).compare("Medium") == 0) { + // 22050Hz mono is 44.1kbps + capture->setAudioBitrate(44); + } else if(qualityBox->itemText(idx).compare("High") == 0) { + // 44100Hz mono is 88.2kbps + capture->setAudioBitrate(88); + } + } + */ +} + +//! [toggle-record] +void AudioRecorder::toggleRecord() +{ + if(!active) { + recTime->setText("0 sec"); + currentTime = 0; + capture->record(); + + button->setText(tr("Stop")); + active = true; + } else { + capture->stop(); + button->setText(tr("Record")); + active = false; + } +} +//! [toggle-record] + +void AudioRecorder::selectOutputFile() +{ + QStringList fileNames; + + QFileDialog dialog(this); + + dialog.setFileMode(QFileDialog::AnyFile); + if (dialog.exec()) + fileNames = dialog.selectedFiles(); + + if(fileNames.size() > 0) + capture->setOutputLocation(QUrl(fileNames.first())); +} |