audiorecorder.cpp Example File
audiorecorder/audiorecorder.cpp
#include <QtGui>
#include <qaudiocapturesource.h>
#include <qmediarecorder.h>
#include <qmediaservice.h>
#include <QtMultimedia/qaudioformat.h>
#include "audiorecorder.h"
AudioRecorder::AudioRecorder()
{
audiosource = new QAudioCaptureSource;
capture = new QMediaRecorder(audiosource);
QAudioEncoderSettings audioSettings;
audioSettings.setQuality(QtMedia::LowQuality);
audioSettings.setEncodingMode(QtMedia::ConstantQualityEncoding);
audioSettings.setCodec(capture->supportedAudioCodecs().first());
capture->setEncodingSettings(audioSettings,QVideoEncoderSettings(),capture->supportedContainers().first());
#ifdef Q_OS_SYMBIAN
capture->setOutputLocation(QUrl("c:\\data\\test.wav"));
#else
capture->setOutputLocation(QUrl("test.raw"));
#endif
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* containerLabel = new QLabel;
containerLabel->setText("Container");
containersBox = new QComboBox(this);
containersBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);
QLabel* codecLabel = new QLabel;
codecLabel->setText("Codec");
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);
QList<QString> inputs = audiosource->audioInputs();
for(int i = 0; i < inputs.size(); i++)
deviceBox->addItem(inputs.at(i));
QStringList codecs = capture->supportedAudioCodecs();
for(int i = 0; i < codecs.count(); i++)
codecsBox->addItem(codecs.at(i));
QStringList containers = capture->supportedContainers();
for(int i = 0; i < containers.count(); i++)
containersBox->addItem(containers.at(i));
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(containerLabel,1,0,Qt::AlignHCenter);
connect(containersBox,SIGNAL(activated(int)),SLOT(containerChanged(int)));
layout->addWidget(containersBox,1,1,Qt::AlignLeft);
layout->addWidget(codecLabel,1,2,Qt::AlignHCenter);
connect(codecsBox,SIGNAL(activated(int)),SLOT(codecChanged(int)));
layout->addWidget(codecsBox,1,3,Qt::AlignLeft);
layout->addWidget(qualityLabel,2,0,Qt::AlignHCenter);
connect(qualityBox,SIGNAL(activated(int)),SLOT(qualityChanged(int)));
layout->addWidget(qualityBox,2,1,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,3,1,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)
{
Q_UNUSED(state)
}
void AudioRecorder::deviceChanged(int idx)
{
audiosource->setAudioInput(deviceBox->itemText(idx));
}
void AudioRecorder::containerChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
capture->setEncodingSettings(capture->audioSettings(), QVideoEncoderSettings(), containersBox->itemText(idx));
}
void AudioRecorder::codecChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
settings.setCodec(codecsBox->itemText(idx));
capture->setEncodingSettings(settings);
}
void AudioRecorder::qualityChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
if(qualityBox->itemText(idx).compare("Low") == 0) {
settings.setQuality(QtMedia::LowQuality);
} else if(qualityBox->itemText(idx).compare("Medium") == 0) {
settings.setQuality(QtMedia::NormalQuality);
} else if(qualityBox->itemText(idx).compare("High") == 0) {
settings.setQuality(QtMedia::HighQuality);
}
capture->setEncodingSettings(settings);
}
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;
}
}
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()));
}
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Qt Mobility Project 1.0.0 |