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#include "soundin.h"
#include <QAudioDeviceInfo>
#include <QAudioFormat>
#include <QAudioInput>
#include <QSysInfo>
#include <QDebug>
#include "DriftingDateTime.h"
#include "moc_soundin.cpp"
bool SoundInput::audioError () const
{
bool result (true);
Q_ASSERT_X (m_stream, "SoundInput", "programming error");
if (m_stream)
{
switch (m_stream->error ())
{
case QAudio::OpenError:
Q_EMIT error (tr ("An error opening the audio input device has occurred."));
break;
case QAudio::IOError:
Q_EMIT error (tr ("An error occurred during read from the audio input device."));
break;
case QAudio::UnderrunError:
Q_EMIT error (tr ("Audio data not being fed to the audio input device fast enough."));
break;
case QAudio::FatalError:
Q_EMIT error (tr ("Non-recoverable error, audio input device not usable at this time."));
break;
case QAudio::NoError:
result = false;
break;
}
}
return result;
}
void SoundInput::start(QAudioDeviceInfo const& device, int framesPerBuffer, AudioDevice * sink, unsigned downSampleFactor, AudioDevice::Channel channel)
{
Q_ASSERT (sink);
stop ();
m_sink = sink;
QAudioFormat format (device.preferredFormat());
// qDebug () << "Preferred audio input format:" << format;
format.setChannelCount (AudioDevice::Mono == channel ? 1 : 2);
format.setCodec ("audio/pcm");
format.setSampleRate (12000 * downSampleFactor);
format.setSampleType (QAudioFormat::SignedInt);
format.setSampleSize (16);
format.setByteOrder (QAudioFormat::Endian (QSysInfo::ByteOrder));
if (!format.isValid ())
{
Q_EMIT error (tr ("Requested input audio format is not valid."));
return;
}
if (!device.isFormatSupported (format))
{
// qDebug () << "Nearest supported audio format:" << device.nearestFormat (format);
Q_EMIT error (tr ("Requested input audio format is not supported on device."));
return;
}
// qDebug () << "Selected audio input format:" << format;
m_stream.reset (new QAudioInput {device, format});
if (audioError ())
{
return;
}
connect (m_stream.data(), &QAudioInput::stateChanged, this, &SoundInput::handleStateChanged);
m_stream->setBufferSize (m_stream->format ().bytesForFrames (framesPerBuffer));
if (sink->initialize (QIODevice::WriteOnly, channel))
{
m_stream->start (sink);
audioError ();
}
else
{
Q_EMIT error (tr ("Failed to initialize audio sink device"));
}
}
void SoundInput::suspend ()
{
if (m_stream)
{
m_stream->suspend ();
audioError ();
}
}
void SoundInput::resume ()
{
// qDebug() << "Resume" << fmod(0.001*DriftingDateTime::currentMSecsSinceEpoch(),6.0);
if (m_sink)
{
m_sink->reset ();
}
if (m_stream)
{
m_stream->resume ();
audioError ();
}
}
void SoundInput::handleStateChanged (QAudio::State newState) const
{
// qDebug () << "SoundInput::handleStateChanged: newState:" << newState;
switch (newState)
{
case QAudio::IdleState:
Q_EMIT status (tr ("Idle"));
break;
case QAudio::ActiveState:
Q_EMIT status (tr ("Receiving"));
break;
case QAudio::SuspendedState:
Q_EMIT status (tr ("Suspended"));
break;
case QAudio::StoppedState:
if (audioError ())
{
Q_EMIT status (tr ("Error"));
}
else
{
Q_EMIT status (tr ("Stopped"));
}
break;
}
}
void SoundInput::stop()
{
if (m_stream)
{
m_stream->stop ();
}
m_stream.reset ();
if (m_sink)
{
m_sink->close ();
}
}
SoundInput::~SoundInput ()
{
stop ();
}
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