WSJT-X/soundin.cpp
John Nelson da4c16ceda Changes for 48000 Hz Audio in samplerate
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3577 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2013-09-27 13:57:48 +00:00

121 lines
2.5 KiB
C++

#include "soundin.h"
#include <QAudioDeviceInfo>
#include <QAudioFormat>
#include <QAudioInput>
#include <QDebug>
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, unsigned channels, int framesPerBuffer, QIODevice * sink)
{
Q_ASSERT (0 < channels && channels < 3);
Q_ASSERT (sink);
stop();
QAudioFormat format (device.preferredFormat());
format.setChannelCount (channels);
format.setCodec ("audio/pcm");
format.setSampleRate (48000);
format.setSampleType (QAudioFormat::SignedInt);
format.setSampleSize (16);
if (!format.isValid ())
{
Q_EMIT error (tr ("Requested input audio format is not valid."));
return;
}
// this function lies!
// if (!device.isFormatSupported (format))
// {
// Q_EMIT error (tr ("Requested input audio format is not supported on device."));
// return;
// }
m_stream.reset (new QAudioInput (device, format, this));
if (audioError ())
{
return;
}
connect (m_stream.data(), &QAudioInput::stateChanged, this, &SoundInput::handleStateChanged);
m_stream->setBufferSize (m_stream->format ().bytesForFrames (framesPerBuffer));
m_stream->start (sink);
audioError ();
}
void SoundInput::handleStateChanged (QAudio::State newState) const
{
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 ();
}
SoundInput::~SoundInput ()
{
}