WSJT-X/soundout.cpp
Joe Taylor fde1b213c3 1. Capitalize names of palettes appropriately.
2. Remove (or comment out) most qDebug() statements.
3. Swap positions of labels 2 and 3 on status bar.
4. In "Split Tx" mode, transmit audio always between 1500 and 2000 Hz.
5. Rearrange positions of WideGraph controls.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3535 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2013-08-08 14:26:53 +00:00

173 lines
3.8 KiB
C++

#include "soundout.h"
#include <QDateTime>
#include <QAudioDeviceInfo>
#include <QAudioOutput>
#include <QDebug>
#if defined (WIN32)
# define MS_BUFFERED 1000
#else
# define MS_BUFFERED 2000
#endif
bool SoundOutput::audioError () const
{
bool result (true);
Q_ASSERT_X (m_stream, "SoundOutput", "programming error");
if (m_stream)
{
switch (m_stream->error ())
{
case QAudio::OpenError:
Q_EMIT error (tr ("An error opening the audio output device has occurred."));
break;
case QAudio::IOError:
Q_EMIT error (tr ("An error occurred during write to the audio output device."));
break;
case QAudio::UnderrunError:
Q_EMIT error (tr ("Audio data not being fed to the audio output device fast enough."));
break;
case QAudio::FatalError:
Q_EMIT error (tr ("Non-recoverable error, audio output device not usable at this time."));
break;
case QAudio::NoError:
result = false;
break;
}
}
return result;
}
SoundOutput::SoundOutput (QIODevice * source)
: m_source (source)
, m_active (false)
, m_currentDevice (QAudioDeviceInfo::defaultOutputDevice ())
{
Q_ASSERT (source);
}
void SoundOutput::startStream (QAudioDeviceInfo const& device)
{
if (!m_stream || device != m_currentDevice)
{
QAudioFormat format (device.preferredFormat ());
#ifdef UNIX
format.setChannelCount (2);
#else
format.setChannelCount (1);
#endif
format.setCodec ("audio/pcm");
format.setSampleRate (48000);
format.setSampleType (QAudioFormat::SignedInt);
format.setSampleSize (16);
if (!format.isValid ())
{
Q_EMIT error (tr ("Requested output audio format is not valid."));
}
if (!device.isFormatSupported (format))
{
Q_EMIT error (tr ("Requested output audio format is not supported on device."));
}
m_stream.reset (new QAudioOutput (device, format, this));
audioError ();
connect (m_stream.data(), &QAudioOutput::stateChanged, this, &SoundOutput::handleStateChanged);
m_currentDevice = device;
}
//
// This buffer size is critical since we are running in the GUI
// thread. If it is too short; high activity levels on the GUI can
// starve the audio buffer. On the other hand the Windows
// implementation seems to take the length of the buffer in time to
// stop the audio stream even if reset() is used.
//
// 1 seconds seems a reasonable compromise except for Windows
// where things are probably broken.
//
// we have to set this before every start on the stream because the
// Windows implementation seems to forget the buffer size after a
// stop.
m_stream->setBufferSize (m_stream->format ().bytesForDuration (MS_BUFFERED * 1000));
m_stream->start (m_source);
audioError ();
}
void SoundOutput::suspend ()
{
if (m_stream && QAudio::ActiveState == m_stream->state ())
{
m_stream->suspend ();
audioError ();
}
}
void SoundOutput::resume ()
{
if (m_stream && QAudio::SuspendedState == m_stream->state ())
{
m_stream->resume ();
audioError ();
}
}
void SoundOutput::stopStream ()
{
if (m_stream)
{
m_stream->stop ();
audioError ();
}
}
void SoundOutput::handleStateChanged (QAudio::State newState)
{
switch (newState)
{
case QAudio::IdleState:
Q_EMIT status (tr ("Idle"));
m_active = false;
break;
case QAudio::ActiveState:
m_active = true;
Q_EMIT status (tr ("Sending"));
break;
case QAudio::SuspendedState:
m_active = true;
Q_EMIT status (tr ("Suspended"));
break;
case QAudio::StoppedState:
m_active = false;
if (audioError ())
{
Q_EMIT status (tr ("Error"));
}
else
{
Q_EMIT status (tr ("Stopped"));
}
break;
}
}
SoundOutput::~SoundOutput ()
{
if (m_stream)
{
m_stream->stop ();
}
}