WSJT-X/soundin_1.cpp

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#include "soundin.h"
#include <stdexcept>
#define FRAMES_PER_BUFFER 1024
//#define NSMAX 1365
#define NSMAX 6827
#define NTMAX 120
extern "C" {
#include <portaudio.h>
extern struct {
float ss[184*NSMAX]; //This is "common/jt9com/..." in fortran
float savg[NSMAX];
// float c0[2*NTMAX*1500];
short int d2[NTMAX*12000];
int nutc; //UTC as integer, HHMM
int ndiskdat; //1 ==> data read from *.wav file
int ntrperiod; //TR period (seconds)
int mousefqso; //User-selected QSO freq (kHz)
int newdat; //1 ==> new data, must do long FFT
int npts8; //npts in c0() array
int nfa; //Low decode limit (Hz)
int nfb; //High decode limit (Hz)
int ntol; //+/- decoding range around fQSO (Hz)
int kin;
int nzhsym;
int nsave;
int nagain;
int ndepth;
int ntxmode;
int nmode;
char datetime[20];
} jt9com_;
}
QString reportAudioError(QAudio::Error audioError)
{
switch (audioError) {
case QAudio::NoError: Q_ASSERT(false);
case QAudio::OpenError: return QObject::tr(
"An error opening the audio device has occurred.");
case QAudio::IOError: return QObject::tr(
"An error occurred during read/write of audio device.");
case QAudio::UnderrunError: return QObject::tr(
"Audio data not being fed to the audio device fast enough.");
case QAudio::FatalError: return QObject::tr(
"Non-recoverable error, audio device not usable at this time.");
}
Q_ASSERT(false);
return "";
}
typedef struct
{
int kin; //Parameters sent to/from the portaudio callback function
int ncall;
bool bzero;
bool monitoring;
} paUserData;
void SoundInThread::run() //SoundInThread::run()
{
quitExecution = false;
//---------------------------------------------------- Soundcard Setup
quitExecutionMutex.lock();
quitExecution = false;
quitExecutionMutex.unlock();
//### Temporary: hardwired device selection
QAudioDeviceInfo DeviceInfo;
QList<QAudioDeviceInfo> m_InDevices;
QAudioDeviceInfo m_InDeviceInfo;
m_InDevices = DeviceInfo.availableDevices(QAudio::AudioInput);
inputDevice = m_InDevices.at(0);
//###
const char* pcmCodec = "audio/pcm";
QAudioFormat audioFormat = inputDevice.preferredFormat();
audioFormat.setChannelCount(1);
audioFormat.setCodec(pcmCodec);
audioFormat.setSampleRate(12000);
audioFormat.setSampleType(QAudioFormat::SignedInt);
audioFormat.setSampleSize(16);
if (!audioFormat.isValid()) {
emit error(tr("Requested audio format is not available."));
return;
}
QAudioInput audioInput(inputDevice, audioFormat);
if (audioInput.error() != QAudio::NoError) {
emit error(reportAudioError(audioInput.error()));
return;
}
QIODevice* stream = audioInput.start();
bool qe = quitExecution;
static int ntr0=99;
int k=0;
int nsec;
int ntr;
int nBusy=0;
int nstep0=0;
int nsps0=0;
qint16 buf0[4096];
//---------------------------------------------- Soundcard input loop
while (!qe) {
quitExecutionMutex.lock();
qe = quitExecution;
quitExecutionMutex.unlock();
if (qe) break;
// Error checking...
if (audioInput.error() != QAudio::NoError) {
emit error(reportAudioError(audioInput.error()));
return;
}
// udata.monitoring=m_monitoring;
qint64 ms = QDateTime::currentMSecsSinceEpoch();
ms=ms % 86400000;
nsec = ms/1000; // Time according to this computer
ntr = nsec % m_TRperiod;
// Reset buffer pointer and symbol number at start of minute
if(ntr < ntr0 or !m_monitoring or m_nsps!=nsps0) {
nstep0=0;
nsps0=m_nsps;
// udata.bzero=true;
k=0;
}
// k=udata.kin;
// How many new samples have been acquired?
const qint32 bytesReady = audioInput.bytesReady();
Q_ASSERT(bytesReady >= 0);
Q_ASSERT(bytesReady % 2 == 0);
if (bytesReady == 0) {
msleep(50);
continue;
}
// Get the new samples
qint32 bytesRead;
bytesRead = stream->read((char*)buf0, bytesReady);
Q_ASSERT(bytesRead <= bytesReady);
if (bytesRead < 0) {
emit error(tr("audio stream QIODevice::read returned -1."));
return;
}
Q_ASSERT(bytesRead % 2 == 0);
// memcpy(jt9com_.d2[k],buf0,bytesRead);
// k+=bytesRead/2;
for(int i=0; i<bytesRead/2; i++) {
jt9com_.d2[k++]=buf0[i];
}
if(m_monitoring) {
int kstep=m_nsps/2;
m_step=(k-1)/kstep;
if(m_step != nstep0) {
if(m_dataSinkBusy) {
nBusy++;
} else {
emit readyForFFT(k-1); //Signal to compute new FFTs
}
nstep0=m_step;
}
}
msleep(100);
ntr0=ntr;
}
// Pa_StopStream(inStream);
// Pa_CloseStream(inStream);
}
void SoundInThread::setInputDevice(int n) //setInputDevice()
{
if (isRunning()) return;
this->m_nDevIn=n;
}
void SoundInThread::quit() //quit()
{
quitExecution = true;
}
void SoundInThread::setMonitoring(bool b) //setMonitoring()
{
m_monitoring = b;
}
void SoundInThread::setPeriod(int ntrperiod, int nsps)
{
m_TRperiod=ntrperiod;
m_nsps=nsps;
}
int SoundInThread::mstep()
{
return m_step;
}