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#include <QtGui>
#include <qaudiocapturesource.h>
#include <qmediarecorder.h>
#include <qmediaservice.h>
#include <qaudioencodercontrol.h>
#include <qaudioformat.h>
#include "audiorecorder.h"
AudioRecorder::AudioRecorder()
{
audiosource = new QAudioCaptureSource;
capture = new QMediaRecorder(audiosource);
if (capture->supportedAudioCodecs().size() > 0) {
QAudioEncoderSettings audioSettings;
audioSettings.setQuality(QtMultimedia::LowQuality);
audioSettings.setEncodingMode(QtMultimedia::ConstantQualityEncoding);
audioSettings.setCodec(capture->supportedAudioCodecs().first());
capture->setEncodingSettings(audioSettings,QVideoEncoderSettings(),
capture->supportedContainers().first());
}
// set a default file
#ifdef Q_OS_SYMBIAN
capture->setOutputLocation(recordPathAudio(QUrl()));
#else
capture->setOutputLocation(QUrl("test.raw"));
#endif
QWidget *window = new QWidget;
window->setMinimumSize(320,240);
window->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Minimum);
QGridLayout* layout = new QGridLayout;
QLabel* deviceLabel = new QLabel;
deviceLabel->setText(tr("Audio Device"));
deviceBox = new QComboBox(this);
deviceBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
deviceBox->setMinimumSize(200,10);
QLabel* encmodeLabel = new QLabel;
encmodeLabel->setText(tr("Encode Mode"));
encModeBox = new QComboBox(this);
encModeBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
encModeBox->setMinimumSize(200,10);
QLabel* containerLabel = new QLabel;
containerLabel->setText(tr("File Container"));
containersBox = new QComboBox(this);
containersBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
containersBox->setMinimumSize(200,10);
QLabel* codecLabel = new QLabel;
codecLabel->setText(tr("Audio Codec"));
codecsBox = new QComboBox(this);
codecsBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
codecsBox->setMinimumSize(200,10);
QLabel* sampleRateLabel = new QLabel;
sampleRateLabel->setText(tr("Sample Rate"));
sampleRateBox = new QComboBox(this);
sampleRateBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
sampleRateBox->setMinimumSize(200,10);
QLabel* channelLabel = new QLabel;
channelLabel->setText(tr("Channel count"));
channelBox = new QComboBox(this);
channelBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
channelBox->setMinimumSize(200,10);
QLabel* qualityLabel = new QLabel;
qualityLabel->setText(tr("Audio Quality"));
qualityBox = new QComboBox(this);
qualityBox->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
qualityBox->setMinimumSize(200,10);
QList<QString> inputs = audiosource->audioInputs();
for(int i = 0; i < inputs.size(); i++)
deviceBox->addItem(inputs.at(i));
QList<QString> encmodes;
encmodes <<"ConstantQuality"<<"ConstantBitRate";
for(int i = 0; i < encmodes.size(); i++)
encModeBox->addItem(encmodes.at(i));
QStringList codecs = capture->supportedAudioCodecs();
if (codecs.count() == 2)
swap(codecs[0], codecs[1]);
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));
QList<int> samplerates = capture->supportedAudioSampleRates();
for(int i = 0; i < samplerates.count(); i++) {
QString rateString = QString("%1").arg(samplerates.at(i));
sampleRateBox->addItem(rateString, QVariant(samplerates.at(i)));
}
QList<int> channels;
channels <<1<<2;
for(int i = 0; i < channels.count(); i++) {
QString channelString = QString("%1").arg(channels.at(i));
channelBox->addItem(channelString, QVariant(channels.at(i)));
}
qualityBox->addItem(tr("Low"));
qualityBox->addItem(tr("Medium"));
qualityBox->addItem(tr("High"));
connect(capture, SIGNAL(durationChanged(qint64)), this, SLOT(updateProgress(qint64)));
connect(capture, SIGNAL(stateChanged(QMediaRecorder::State)), this, SLOT(stateChanged(QMediaRecorder::State)));
connect(capture, SIGNAL(error(QMediaRecorder::Error)), this, SLOT(errorChanged(QMediaRecorder::Error)));
if (codecs.count() > 0) {
QAudioEncoderSettings audioSettings;
audioSettings.setQuality(QtMultimedia::LowQuality);
audioSettings.setEncodingMode(QtMultimedia::ConstantQualityEncoding);
audioSettings.setCodec(codecs.first());
capture->setEncodingSettings(audioSettings,QVideoEncoderSettings(),
containers.first());
}
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(encmodeLabel,1,0,Qt::AlignHCenter);
connect(encModeBox,SIGNAL(activated(int)),SLOT(encmodeChanged(int)));
layout->addWidget(encModeBox,1,1,1,3,Qt::AlignLeft);
layout->addWidget(containerLabel,2,0,Qt::AlignHCenter);
connect(containersBox,SIGNAL(activated(int)),SLOT(containerChanged(int)));
layout->addWidget(containersBox,2,1,1,3,Qt::AlignLeft);
layout->addWidget(codecLabel,3,0,Qt::AlignHCenter);
connect(codecsBox,SIGNAL(activated(int)),SLOT(codecChanged(int)));
layout->addWidget(codecsBox,3,1,1,3,Qt::AlignLeft);
layout->addWidget(sampleRateLabel,4,0,Qt::AlignHCenter);
connect(sampleRateBox,SIGNAL(activated(int)),SLOT(sampleRateChanged(int)));
layout->addWidget(sampleRateBox,4,1,1,3,Qt::AlignLeft);
layout->addWidget(channelLabel,5,0,Qt::AlignHCenter);
connect(channelBox,SIGNAL(activated(int)),SLOT(channelCountChanged(int)));
layout->addWidget(channelBox,5,1,1,3,Qt::AlignLeft);
layout->addWidget(qualityLabel,6,0,Qt::AlignHCenter);
connect(qualityBox,SIGNAL(activated(int)),SLOT(qualityChanged(int)));
layout->addWidget(qualityBox,6,1,1,3,Qt::AlignLeft);
fileButton = new QPushButton(this);
fileButton->setText(tr("Output File"));
connect(fileButton,SIGNAL(clicked()),SLOT(selectOutputFile()));
layout->addWidget(fileButton,7,0,Qt::AlignHCenter);
pauseButton = new QPushButton(this);
pauseButton->setText(tr("Pause"));
connect(pauseButton,SIGNAL(clicked()),SLOT(togglePause()));
layout->addWidget(pauseButton,7,1,Qt::AlignHCenter);
button = new QPushButton(this);
button->setText(tr("Record"));
connect(button,SIGNAL(clicked()),SLOT(toggleRecord()));
layout->addWidget(button,7,2,Qt::AlignHCenter);
statusLabel = new QLabel;
statusLabel->setSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed);
statusLabel->setMinimumSize(130,10);
statusLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);
statusLabel->setLineWidth(1);
layout->addWidget(statusLabel,8,0,Qt::AlignHCenter);
QLabel* durationLabel = new QLabel;
durationLabel->setText(tr("Duration"));
layout->addWidget(durationLabel,8,1,Qt::AlignRight);
recTime = new QLabel;
layout->addWidget(recTime,8,2,Qt::AlignLeft);
window->setLayout(layout);
setCentralWidget(window);
window->show();
active = false;
paused = false;
}
QUrl AudioRecorder::recordPathAudio(QUrl filePath)
{
if (!filePath.isEmpty())
return filePath;
QDir outputDir(QDir::rootPath());
int lastImage = 0;
int fileCount = 0;
foreach(QString fileName, outputDir.entryList(QStringList() << "testclip_*")) {
int imgNumber = fileName.mid(5, fileName.size()-9).toInt();
lastImage = qMax(lastImage, imgNumber);
if (outputDir.exists(fileName))
fileCount+=1;
}
lastImage+=fileCount;
QUrl location(QDir::toNativeSeparators(outputDir.canonicalPath()+QString("/testclip_%1").arg(lastImage+1,4,10,QLatin1Char('0'))));
return location;
}
AudioRecorder::~AudioRecorder()
{
delete capture;
delete audiosource;
}
void AudioRecorder::updateProgress(qint64 pos)
{
currentTime = pos;
if(currentTime == 0) currentTime = 1;
QString text = QString("%1").arg(currentTime/1000);
recTime->setText(text);
}
void AudioRecorder::stateChanged(QMediaRecorder::State state)
{
if (capture->error() != QMediaRecorder::NoError)
return;
switch(state) {
case QMediaRecorder::RecordingState: {
statusLabel->setText(tr("Recording"));
button->setText(tr("Stop"));
break;
}
case QMediaRecorder::PausedState: {
statusLabel->setText(tr("Paused"));
button->setText(tr("Record"));
break;
}
default: {
statusLabel->setText(tr("Stopped"));
button->setText(tr("Record"));
}
}
}
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)
{
updateSamplerates(idx);
updateChannelCount(idx);
updateQuality(idx);
QAudioEncoderSettings settings = capture->audioSettings();
settings.setCodec(codecsBox->itemText(idx));
capture->setEncodingSettings(settings);
}
void AudioRecorder::sampleRateChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
settings.setSampleRate((sampleRateBox->itemData(idx).toInt()));
capture->setEncodingSettings(settings);
}
void AudioRecorder::channelCountChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
settings.setChannelCount((channelBox->itemData(idx).toInt()));
capture->setEncodingSettings(settings);
}
void AudioRecorder::qualityChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
switch(idx) {
case 0:
settings.setQuality(QtMultimedia::LowQuality);
break;
case 1:
settings.setQuality(QtMultimedia::NormalQuality);
break;
default:
settings.setQuality(QtMultimedia::HighQuality);
}
capture->setEncodingSettings(settings);
}
void AudioRecorder::encmodeChanged(int idx)
{
QAudioEncoderSettings settings = capture->audioSettings();
switch(idx) {
case 0:
settings.setEncodingMode(QtMultimedia::ConstantQualityEncoding);
break;
case 1:
settings.setEncodingMode(QtMultimedia::ConstantBitRateEncoding);
break;
default:
settings.setEncodingMode(QtMultimedia::ConstantQualityEncoding);
}
capture->setEncodingSettings(settings);
}
void AudioRecorder::toggleRecord()
{
if(!active) {
if(!paused) {
recTime->setText("0");
currentTime = 0;
}
#ifdef Q_OS_SYMBIAN
if (!paused)
capture->setOutputLocation(recordPathAudio(destination));
#endif
capture->record();
active = true;
paused = false;
} else {
capture->stop();
active = false;
}
}
void AudioRecorder::togglePause()
{
if(active && !paused) {
capture->pause();
active = false;
paused = true;
}
}
void AudioRecorder::selectOutputFile()
{
QStringList fileNames;
QFileDialog dialog(this);
dialog.setFileMode(QFileDialog::AnyFile);
if (dialog.exec())
fileNames = dialog.selectedFiles();
if(fileNames.size() > 0)
#ifdef Q_OS_SYMBIAN
destination = QUrl(fileNames.first());
#else
capture->setOutputLocation(QUrl(fileNames.first()));
#endif
}
void AudioRecorder::errorChanged(QMediaRecorder::Error err)
{
Q_UNUSED(err)
statusLabel->setText(capture->errorString());
}
void AudioRecorder::updateSamplerates(int idx)
{
QAudioEncoderSettings settings;
settings.setCodec(codecsBox->itemText(idx));
QList<int> supportedSampleRates = capture->supportedAudioSampleRates(settings);
sampleRateBox->clear();
for(int i = 0; i < supportedSampleRates.count(); i++) {
QString rateString = QString("%1").arg(supportedSampleRates.at(i));
sampleRateBox->addItem(rateString, QVariant(supportedSampleRates.at(i)));
}
}
void AudioRecorder::updateChannelCount(int idx)
{
QMediaControl *control = audiosource->service()->requestControl(QAudioEncoderControl_iid);
if (!control)
return;
QAudioEncoderControl *audioEncoder = qobject_cast<QAudioEncoderControl*>(control);
if (!audioEncoder) {
audiosource->service()->releaseControl(control);
return;
}
channelBox->clear();
QStringList list = audioEncoder->supportedEncodingOptions(codecsBox->itemText(idx));
QList<int> channels;
if (list.contains("channels"))
channels <<1<<2;
else
channels <<1;
for(int i = 0; i < channels.count(); i++) {
QString channelString = QString("%1").arg(channels.at(i));
channelBox->addItem(channelString, QVariant(channels.at(i)));
}
}
void AudioRecorder::updateQuality(int idx)
{
QMediaControl *control = audiosource->service()->requestControl(QAudioEncoderControl_iid);
if (!control)
return;
QAudioEncoderControl *audioEncoder = qobject_cast<QAudioEncoderControl*>(control);
if (!audioEncoder) {
audiosource->service()->releaseControl(control);
return;
}
qualityBox->clear();
QStringList list = audioEncoder->supportedEncodingOptions(codecsBox->itemText(idx));
QList<int> channels;
if (list.contains("quality")) {
qualityBox->addItem(tr("Low"));
qualityBox->addItem(tr("Medium"));
qualityBox->addItem(tr("High"));
}else {
qualityBox->addItem(tr("Low"));
}
}