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/*
xmunipack - list FitsMeta render
Copyright © 2022 F.Hroch (hroch@physics.muni.cz)
This file is part of Munipack.
Munipack is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Munipack is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Munipack. If not, see <http://www.gnu.org/licenses/>.
*/
#include "list.h"
#include "fitsdisplay.h"
#include <wx/wx.h>
#include <wx/thread.h>
#include <wx/filesys.h>
#ifdef __WXDEBUG__
#include <wx/debug.h>
#endif
// ---- MetaRender
MetaRender::MetaRender(wxEvtHandler *eh, const size_t i, const wxArrayString& f,
const wxSize& s):
wxThread(wxTHREAD_DETACHED),handler(eh),id(i),files(f),size(s)
{
wxASSERT(handler);
wxLogDebug("MetaRender::MetaRender() %d",int(files.GetCount()));
}
void *MetaRender::Entry()
{
bool imake = size.GetWidth() > 0;
for(size_t i = 0; i < files.GetCount(); i++) {
if( TestDestroy() ) break;
array = FitsArray();
hdu.clear();
wxImage icon;
FitsMeta meta;
wxFileName fn(wxFileSystem::URLToFileName(files[i]));
wxULongLong filesize = fn.GetSize();
wxString filename = fn.GetFullPath();
if( MagicFile(filename) ) {
if( FitsOpen(filename,imake) ) {
if( imake ) {
if( array.IsOk() ) {
if( array.IsDisplayImplemented() ) {
FitsTone tone(array);
FitsDisplay display(array.IsColour());
display.SetTone(tone);
icon = display.MakeIcon(array,size.GetWidth(),size.GetHeight());
}
else
wxLogDebug("MetaRender::Entry(): `"+files[i]+
"' is corrupted or have unimplemeted shape of the array.");
}
}
meta = FitsMeta(files[i],hdu,filesize);
}
else
wxLogDebug("MetaRender::Entry(): `"+files[i]+"' failed to open as FITS.");
}
else
wxLogDebug("MetaRender::Entry() on "+files[i]+"'; the magic say: no FITS.");
MetaOpenEvent ev(EVT_META_OPEN,ID_METALOAD_PHASE);
ev.id = id;
ev.index = i;
ev.meta = meta;
ev.icon = icon;
wxQueueEvent(handler,ev.Clone());
}
MetaOpenEvent ev(EVT_META_OPEN,ID_METALOAD_FINISH);
ev.id = id;
wxQueueEvent(handler,ev.Clone());
return (wxThread::ExitCode) 0;
}
bool MetaRender::FitsOpen(const wxString& filename, bool pick_array)
{
fitsfile *f;
int status = 0;
int dummy, htype, bitpix, naxis;
hdu.clear();
array = FitsArray();
int nhdu = 0;
// open file
status = 0;
fits_open_file(&f, filename.fn_str(), READONLY, &status);
if( status ) goto crash;
fits_get_num_hdus(f,&nhdu,&status);
if( status ) goto crash;
for(int k = 0; k < nhdu; k++) {
fits_movabs_hdu(f,k+1,&htype,&status);
if( status ) goto crash;
// load header
int nhead;
char h[FLEN_CARD];
FitsHeader head;
fits_get_hdrspace(f,&nhead,&dummy,&status);
for(int n = 0; status == 0 && n < nhead; n++) {
if( fits_read_record(f,n+1,h,&status) == 0 )
head.Add(wxString(h,wxConvUTF8));
}
if( status ) goto crash;
if( htype == IMAGE_HDU ) {
fits_get_img_type(f,&bitpix,&status);
fits_get_img_dim(f,&naxis,&status);
if( status ) goto crash;
int hdutype = naxis > 0 ? HDU_IMAGE : HDU_HEAD;
if( hdutype == HDU_HEAD )
hdu.push_back(FitsMetaHdu(head,htype));
else {
long *naxes = new long[naxis];
fits_get_img_size(f,naxis,naxes,&status);
if( status ) { delete[] naxes; goto crash; }
hdu.push_back(FitsMetaHdu(head,htype,naxis,naxes));
if( pick_array && !array.IsOk() ) {
// this image becomes icon
long *naxes = new long[naxis];
fits_get_img_size(f,naxis,naxes,&status);
if( status ) { delete[] naxes; goto crash; }
long ndata = 1; for(int i = 0; i < naxis; i++ ) ndata = ndata*naxes[i];
long firstelem = 1;
float nullval = 0.0;
float *image = new float[ndata];
wxASSERT(image);
fits_read_img(f,TFLOAT,firstelem,ndata,&nullval,image,&dummy,&status);
if( status ) { delete[] naxes; delete[] image; goto crash; }
array = FitsArray(head,htype,naxis,naxes,image);
}
}
}
else if( htype == ASCII_TBL || htype == BINARY_TBL ) {
long nrows;
int ncols;
fits_get_num_rows(f,&nrows,&status);
fits_get_num_cols(f,&ncols,&status);
hdu.push_back(FitsMetaHdu(head,htype,nrows,ncols));
}
else
wxLogError("FitsStream: `"+filename+"' unrecognized htype for HDU #%d",k);
} // for over HDUs
crash:
fits_close_file(f, &status);
if( status ) {
char emsg[FLEN_ERRMSG];
if( status ) wxLogDebug("FitsMeta():");
while( fits_read_errmsg(emsg) )
wxLogDebug(wxString(emsg,wxConvUTF8));
}
return status == 0;
}
bool MetaRender::MagicFile(const wxString& filename) const
{
const char *record = "SIMPLE = T";
const size_t size = strlen(record);
bool result = false;
FILE *f = fopen(filename.fn_str(),"r");
if( f != NULL ) {
char buf[size+1];
if( fread(buf,1,size,f) == size ) {
buf[size] = '\0';
result = strcmp(buf,record) == 0;
}
fclose(f);
}
return result;
}
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