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// Copyright (C) 1999-2018
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include <iostream>
#include <sstream>
#include <iomanip>
using namespace std;
#include "nrrdgzip.h"
#include "zlib.h"
#include "util.h"
template<class T> FitsNRRDGzipm<T>::FitsNRRDGzipm(FitsFile* fits)
: FitsNRRDm<T>(fits)
{
FitsNRRDm<T>::uncompress(fits);
}
template <class T> int FitsNRRDGzipm<T>::compressed(T* dest, char* src,
size_t sz)
{
z_stream zstrm;
zstrm.zalloc = NULL;
zstrm.zfree = NULL;
zstrm.opaque = NULL;
zstrm.avail_in = sz;
zstrm.next_in = (Bytef*)src;
zstrm.avail_out = this->size_*sizeof(T);
zstrm.next_out = (Bytef*)dest;
// look for both zlib and gzip headers
if (inflateInit2(&zstrm, MAX_WBITS+32) != Z_OK) {
internalError("Fitsy++ gzip inflateInit error");
return 0;
}
if (DebugCompress)
cerr << " inflate START: avail_in " << zstrm.avail_in
<< " avail_out " << zstrm.avail_out
<< " total_in " << zstrm.total_in
<< " total_out " << zstrm.total_out << endl;
int result = ::inflate(&zstrm, Z_FINISH);
switch (result) {
case Z_OK:
if (DebugCompress)
cerr << " inflate OK: avail_in " << zstrm.avail_in
<< " avail_out " << zstrm.avail_out
<< " total_in " << zstrm.total_in
<< " total_out " << zstrm.total_out << endl;
break;
case Z_STREAM_END:
if (DebugCompress)
cerr << " inflate STREAM_END: avail_in " << zstrm.avail_in
<< " avail_out " << zstrm.avail_out
<< " total_in " << zstrm.total_in
<< " total_out " << zstrm.total_out << endl;
break;
case Z_BUF_ERROR:
if (DebugCompress)
cerr << " inflate BUF_ERROR: avail_in " << zstrm.avail_in
<< " avail_out " << zstrm.avail_out << endl;
return 0;
default:
internalError("Fitsy++ gzip inflate error");
return 0;
}
inflateEnd(&zstrm);
return 1;
}
template class FitsNRRDGzipm<unsigned char>;
template class FitsNRRDGzipm<short>;
template class FitsNRRDGzipm<unsigned short>;
template class FitsNRRDGzipm<int>;
template class FitsNRRDGzipm<long long>;
template class FitsNRRDGzipm<float>;
template class FitsNRRDGzipm<double>;
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