void Waterfall::updateWaterfall(char*header,char* buffer,int length) {
int i,j;
int version,subversion;
int offset;
//qDebug() << "updateWaterfall: " << width() << ":" << height();
version=header[1];
subversion=header[2];
sampleRate=((header[9]&0xFF)<<24)+((header[10]&0xFF)<<16)+((header[11]&0xFF)<<8)+(header[12]&0xFF);
if(version==2 && subversion>0) {
// only in version 2.1 and above
LO_offset=((header[13]&0xFF)<<8)+(header[14]&0xFF);
} else {
LO_offset=0;
}
if(samples!=NULL) {
free(samples);
}
samples = (float*) malloc(width() * sizeof (float));
// do not rotate spectrum display. It is done by dspserver now
#pragma omp parallel for schedule(static)
for(i=0;i<width();i++) {
samples[i] = -(buffer[i] & 0xFF);
}
size = length;
QTimer::singleShot(0,this,SLOT(updateWaterfall_2()));
}
void Waterfall::updateWaterfall(char*header,char* buffer,int length) {
int i,j;
int version,subversion;
int offset;
//qDebug() << "updateWaterfall: " << width() << ":" << height();
version=header[1];
subversion=header[2];
sampleRate=((header[9]&0xFF)<<24)+((header[10]&0xFF)<<16)+((header[11]&0xFF)<<8)+(header[12]&0xFF);
if(version==2 && subversion>0) {
// only in version 2.1 and above
LO_offset=((header[13]&0xFF)<<8)+(header[14]&0xFF);
} else {
LO_offset=0;
}
if(samples!=NULL) {
free(samples);
}
samples = (float*) malloc(width() * sizeof (float));
// rotate spectrum display if LO is not 0
if(LO_offset==0) {
#pragma omp parallel for schedule(static)
for(i=0;i<width();i++) {
samples[i] = -(buffer[i] & 0xFF);
}
} else {
float step=(float)sampleRate/(float)width();
offset=(int)((float)LO_offset/step);
#pragma omp parallel for schedule(static) private(i,j)
for(i=0;i<width();i++) {
j=i-offset;
if(j<0) j+=width();
if(j>=width()) j%=width();
samples[i] = -(buffer[j] & 0xFF);
}
}
size = length;
QTimer::singleShot(0,this,SLOT(updateWaterfall_2()));
}
