void AudioRecorder::toggleRecord()
{
if (audioRecorder->state() == QMediaRecorder::StoppedState) {
audioRecorder->setAudioInput(boxValue(ui->audioDeviceBox).toString());
QAudioEncoderSettings settings;
settings.setCodec(boxValue(ui->audioCodecBox).toString());
settings.setSampleRate(boxValue(ui->sampleRateBox).toInt());
settings.setBitRate(boxValue(ui->bitrateBox).toInt());
settings.setChannelCount(boxValue(ui->channelsBox).toInt());
settings.setQuality(QMultimedia::EncodingQuality(ui->qualitySlider->value()));
settings.setEncodingMode(ui->constantQualityRadioButton->isChecked() ?
QMultimedia::ConstantQualityEncoding :
QMultimedia::ConstantBitRateEncoding);
QString container = boxValue(ui->containerBox).toString();
audioRecorder->setEncodingSettings(settings, QVideoEncoderSettings(), container);
audioRecorder->record();
}
else {
audioRecorder->stop();
}
}
bool SimpleAudioRecorder::setupRecorder()
{
//inputs
QStringList inputs = m_recorder.audioInputs();
if(inputs.size() == 0) return false;
qDebug() << "inputs: " << inputs;
m_recorder.setAudioInput("default");
//audio codecs;
QStringList codecs = m_recorder.supportedAudioCodecs();
if(codecs.size() == 0) return false;
qDebug() << "codecs: " << codecs;
int sampleRate = 16000;
if(codecs.contains("aac"))
{
m_settings.setCodec("aac");
}
else if(codecs.contains("amr-wb"))
{
m_settings.setCodec("amr-wb");
}
else
{
m_settings.setCodec(codecs.at(0));
sampleRate = 8000;
}
qDebug() << "set codec: " << m_settings.codec();
//containers
QStringList containers = m_recorder.supportedContainers();
if(containers.size() == 0) return false;
qDebug() << "containers: " << containers;
if(containers.contains("3gp"))
{
m_container = "3gp";
}
else if(containers.contains("mp4"))
{
m_container = "mp4";
}
else
{
m_container = containers.at(0);
}
//sample rate
QList<int> sampleRates = m_recorder.supportedAudioSampleRates();
if(sampleRates.size() == 0) return false;
qDebug() << "samplerates: " << sampleRates;
if(sampleRates.size() && !sampleRates.contains(sampleRate))
{
sampleRate = sampleRates.at(0);
}
m_settings.setChannelCount(2);
m_settings.setSampleRate(sampleRate);
m_settings.setQuality(QMultimedia::NormalQuality);
m_settings.setBitRate(64000);
m_settings.setEncodingMode(QMultimedia::AverageBitRateEncoding);
m_recorder.setEncodingSettings(m_settings
, QVideoEncoderSettings()
, m_container);
connect(&m_recorder, SIGNAL(durationChanged(qint64)), this,
SLOT(onDurationChanged(qint64)));
connect(&m_recorder, SIGNAL(statusChanged(QMediaRecorder::Status)), this,
SLOT(onStatusChanged(QMediaRecorder::Status)));
connect(&m_recorder, SIGNAL(error(QMediaRecorder::Error)), this,
SLOT(onError(QMediaRecorder::Error)));
return true;
}