WSJT-X/soundout.cpp
Joe Taylor 04dcf0a528 Major changes to the MAP65 branch. This branch is now a copy of
MAP65 v2.3.0, r631, as checked out from the SVN repository on
pulsar.princeton.edu.  If all goes well with this commit, subsequent
MAP65 development will use the Berlios repository.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/map65@2461 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2012-05-22 14:28:39 +00:00

171 lines
4.8 KiB
C++

#include "soundout.h"
#define FRAMES_PER_BUFFER 256
extern "C" {
#include <portaudio.h>
}
extern float gran(); //Noise generator (for tests only)
extern short int iwave[60*11025]; //Wave file for Tx audio
extern int nwave;
extern bool btxok;
extern double outputLatency;
typedef struct //Parameters sent to or received from callback function
{
int dummy;
} paUserData;
//--------------------------------------------------------------- d2aCallback
extern "C" int d2aCallback(const void *inputBuffer, void *outputBuffer,
unsigned long framesToProcess,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
paUserData *udata=(paUserData*)userData;
short *wptr = (short*)outputBuffer;
unsigned int i,n;
static int ic=0;
// static int ic0=0;
// static int nsec0=-99;
static bool btxok0=false;
static int nminStart=0;
// static t0,t1;
double tsec,tstart;
int nsec;
// Get System time
qint64 ms = QDateTime::currentMSecsSinceEpoch() % 86400000;
tsec = 0.001*ms;
nsec = ms/1000;
if(btxok and !btxok0) { //Start (or re-start) a transmission
n=nsec/60;
tstart=tsec - n*60.0 - 1.0;
if(tstart<1.0) {
ic=0; //Start of minute, set starting index to 0
// ic0=ic;
nminStart=n;
// t0=timeInfo->currentTime;
} else {
if(n != nminStart) { //Late start in new minute: compute starting index
ic=(int)(tstart*11025.0);
// ic0=ic;
// t0=timeInfo->currentTime;
// qDebug() << "B" << t0 << ic0;
nminStart=n;
}
}
/*
qDebug() << "A" << n << ic
<< QString::number( tsec, 'f', 3 )
<< QString::number( tstart, 'f', 3 )
<< QString::number( timeInfo->currentTime, 'f', 3 )
<< QString::number( timeInfo->outputBufferDacTime, 'f', 3 )
<< QString::number( timeInfo->outputBufferDacTime -
timeInfo->currentTime, 'f', 3 )
<< QString::number( timeInfo->currentTime - tsec, 'f', 3 );
*/
}
btxok0=btxok;
/*
if(nsec!=nsec0) {
double txt=timeInfo->currentTime - t0;
double r=0.0;
if(txt>0.0) r=(ic-ic0)/txt;
qDebug() << "C" << txt << ic-ic0 << r;
nsec0=nsec;
}
*/
if(btxok) {
for(i=0 ; i<framesToProcess; i++ ) {
short int i2=iwave[ic];
if(ic > nwave) i2=0;
// i2 = 500.0*(i2/32767.0 + 5.0*gran()); //Add noise (tests only!)
if(!btxok) i2=0;
*wptr++ = i2; //left
*wptr++ = i2; //right
ic++;
}
} else {
for(i=0 ; i<framesToProcess; i++ ) {
*wptr++ = 0;
*wptr++ = 0;
ic++;
}
}
if(ic > nwave) {
btxok=0;
ic=0;
}
return 0;
}
void SoundOutThread::run()
{
PaError paerr;
PaStreamParameters outParam;
PaStream *outStream;
paUserData udata;
quitExecution = false;
outParam.device=m_nDevOut; //Output device number
outParam.channelCount=2; //Number of analog channels
outParam.sampleFormat=paInt16; //Send short ints to PortAudio
outParam.suggestedLatency=0.05;
outParam.hostApiSpecificStreamInfo=NULL;
paerr=Pa_IsFormatSupported(NULL,&outParam,11025.0);
if(paerr<0) {
qDebug() << "PortAudio says requested output format not supported.";
qDebug() << paerr;
return;
}
// udata.nwave=m_nwave;
// udata.btxok=false;
paerr=Pa_OpenStream(&outStream, //Output stream
NULL, //No input parameters
&outParam, //Output parameters
11025.0, //Sample rate
FRAMES_PER_BUFFER, //Frames per buffer
paClipOff, //No clipping
d2aCallback, //output callbeck routine
&udata); //userdata
paerr=Pa_StartStream(outStream);
if(paerr<0) {
qDebug() << "Failed to start audio output stream.";
return;
}
const PaStreamInfo* p=Pa_GetStreamInfo(outStream);
outputLatency = p->outputLatency;
bool qe = quitExecution;
//---------------------------------------------- Soundcard output loop
while (!qe) {
qe = quitExecution;
if (qe) break;
// udata.nwave=m_nwave;
// if(m_txOK) udata.btxok=1;
// if(!m_txOK) udata.btxok=0;
msleep(100);
}
Pa_StopStream(outStream);
Pa_CloseStream(outStream);
}
void SoundOutThread::setOutputDevice(int n) //setOutputDevice()
{
if (isRunning()) return;
this->m_nDevOut=n;
}