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/*
Copyright 2008 Brain Research Institute, Melbourne, Australia
Written by J-Donald Tournier, 27/06/08.
This file is part of MRtrix.
MRtrix 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.
MRtrix 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 MRtrix. If not, see <http://www.gnu.org/licenses/>.
23-09-2008 J-Donald Tournier <d.tournier@brain.org.au>
* fix handling of ascii floating-point numbers on locales that use a comma as the decimal separator.
09-09-2009 J-Donald Tournier <d.tournier@brain.org.au>
* include <cstdio> to allow compilation on Fedora 11
*/
#ifndef __file_dicom_csa_entry_h__
#define __file_dicom_csa_entry_h__
#include <cstdio>
#include "data_type.h"
#include "get_set.h"
#include "file/dicom/element.h"
namespace MR {
namespace File {
namespace Dicom {
class CSAEntry {
protected:
const guint8* start;
const guint8* next;
const guint8* end;
bool print;
gchar name[65], vr[5];
gint32 nitems, num, cnum;
public:
CSAEntry (const guint8* start_p, const guint8* end_p, bool output_fields = false);
bool parse ();
const gchar* key () const;
gint get_int () const;
gfloat get_float () const;
void get_float (float* v) const;
friend std::ostream& operator<< (std::ostream& stream, const CSAEntry& item);
};
inline CSAEntry::CSAEntry (const guint8* start_p, const guint8* end_p, bool output_fields) :
start (start_p),
end (end_p),
print (output_fields)
{
if (strncmp ("SV10", (const gchar*) start, 4))
debug ("WARNING: CSA data is not in SV10 format");
cnum = 0;
num = getLE<guint32> (start+8);
next = start + 16;
}
inline bool CSAEntry::parse ()
{
if (cnum >= num) return (false);
start = next;
if (start >= end + 84) return (false);
strncpy (name, (const gchar*) start, 64);
getLE<gint32> (start+64); // vm
strncpy (vr, (const gchar*) start+68, 4);
getLE<gint32> (start+72); // syngodt
nitems = getLE<gint32> (start+76);
if (print) fprintf (stdout, " [CSA] %s: ", name);
next = start + 84;
if (next + 4 >= end) return (false);
for (gint32 m = 0; m < nitems; m++) {
gint32 length = getLE<gint32> (next);
guint size = 16 + 4*((length+3)/4);
if (next + size > end) return (false);
if (print) fprintf(stdout, "%.*s ", length, (const gchar*) next+16);
next += size;
}
if (print) fprintf(stdout, "\n");
cnum++;
return (true);
}
inline const gchar* CSAEntry::key () const { return (name); }
inline int CSAEntry::get_int () const
{
const guint8* p = start + 84;
for (gint32 m = 0; m < nitems; m++) {
gint32 length = getLE<gint32> (p);
if (length) return (to<int> (String ((const char*) p+16, 4*((length+3)/4))));
p += 16 + 4*((length+3)/4);
}
return (0);
}
inline float CSAEntry::get_float () const
{
const guint8* p = start + 84;
for (gint32 m = 0; m < nitems; m++) {
gint32 length = getLE<gint32> (p);
if (length) return (to<float> (String ((const char*) p+16, 4*((length+3)/4))));
p += 16 + 4*((length+3)/4);
}
return (GSL_NAN);
}
inline void CSAEntry::get_float (float* v) const
{
const guint8* p = start + 84;
for (gint32 m = 0; m < nitems; m++) {
gint32 length = getLE<gint32> (p);
if (length) v[m] = to<float> (String ((const char*) p+16, 4*((length+3)/4)));
p += 16 + 4*((length+3)/4);
}
}
inline std::ostream& operator<< (std::ostream& stream, const CSAEntry& item)
{
stream << "[CSA] " << item.name << ":";
const guint8* next = item.start + 84;
for (gint32 m = 0; m < item.nitems; m++) {
gint32 length = getLE<gint32> (next);
guint size = 16 + 4*((length+3)/4);
while (length > 0 && !next[16+length-1]) length--;
stream << " ";
stream.write ((const gchar*) next+16, length);
next += size;
}
return (stream);
}
}
}
}
#endif
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