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// Copyright (C) 1999-2017
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include <pthread.h>
#include "fitsimage.h"
#include "analysis.h"
#include "smooth.h"
#include "context.h"
void* convolve(void* tt);
void FitsImage::analysis(int which, pthread_t* thread, t_smooth_arg* targ)
{
if (DebugPerf)
cerr << "FitsImage::analysis()" << endl;
targ->kernel =NULL;
targ->src =NULL;
targ->dest =NULL;
targ->width =0;
targ->height =0;
targ->radius =0;
if (manageAnalysis_) {
if (analysis_)
delete analysis_;
if (analysisdata_)
delete analysisdata_;
}
manageAnalysis_ =0;
analysis_ = block_;
analysisdata_ = blockdata_;
if (which) {
analysis_ = new FitsAnalysis(block_);
if (analysis_->isValid()) {
analysisdata_ = new FitsDatam<double>(analysis_, interp_);
smooth(thread, targ);
manageAnalysis_ =1;
}
else {
delete analysis_;
analysis_ = block_;
}
}
image_ = analysis_;
data_ = analysisdata_;
}
void FitsImage::smooth(pthread_t* thread, t_smooth_arg* targ)
{
// radius
int r = context_->smoothRadius();
int ww = analysis_->head()->naxis(0);
int hh = analysis_->head()->naxis(1);
// src
double* src = new double[ww*hh];
double* ptr = src;
for (long jj=0; jj<hh; jj++)
for (long ii=0; ii<ww; ii++, ptr++)
*ptr = blockdata_->getValueDouble(jj*ww+ii);
// dest
double* dest = (double*)analysis_->data();
// kernel
// create kernel
int rr = 2*r+1;
double* kernel = new double[rr*rr];
memset(kernel, 0, rr*rr*sizeof(double));
switch (context_->smoothFunction()) {
case Context::BOXCAR:
boxcar(kernel,r);
break;
case Context::TOPHAT:
tophat(kernel,r);
break;
case Context::GAUSSIAN:
gaussian(kernel,r);
break;
}
// convolve
targ->kernel = kernel;
targ->src = src;
targ->dest = dest;
targ->width = ww;
targ->height = hh;
targ->radius = r;
int result = pthread_create(thread, NULL, convolve, targ);
if (result)
internalError("Unable to Create Thread");
}
void* convolve(void* tt)
{
t_smooth_arg* targ = (t_smooth_arg*)tt;
double* kernel = targ->kernel;
double* src = targ->src;
double* dest = targ->dest;
int width = targ->width;
int height = targ->height;
int r = targ->radius;
int rr = 2*r+1;
double* dptr = dest;
for (int jj=0; jj<height; jj++) {
for (int ii=0; ii<width; ii++, dptr++) {
for (int nn=jj-r, qq=0; nn<=jj+r; nn++, qq++) {
if (nn>=0 && nn<height) {
register int nd = nn*width;
register int qd = qq*rr;
for (int mm=ii-r, pp=0; mm<=ii+r; mm++, pp++) {
if (mm>=0 && mm<width)
*dptr += src[nd+mm]*kernel[qd+pp];
}
}
}
}
}
return NULL;
}
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