** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: projections.cpp,v 1.2 2000/06/19 17:58:20 kevin Exp $
+** $Id: projections.cpp,v 1.3 2000/06/20 17:54:51 kevin Exp $
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
*/
bool
-Projections::headerWrite (void)
+Projections::headerWrite (fnetorderstream& fs)
{
kuint32 _hsize = m_headerSize;
kuint32 _nView = m_nView;
kfloat64 _detInc = m_detInc;
kfloat64 _phmLen = m_phmLen;
- if (m_fd < 0) {
- sys_error (ERR_SEVERE, "m_fd < 0 [projections_write_header]");
+ fs.seekp(0);
+ if (! fs)
return false;
- }
-
- if (lseek (m_fd, (off_t) 0, SEEK_SET) != (off_t) 0) {
- sys_error (ERR_WARNING, "Error seeking to beginning of fiel [projections_write_header]");
- return false;
- }
- if (! write_nint32 (&_hsize, m_fd) ||
- ! write_nint32 (&_nView, m_fd) ||
- ! write_nint32 (&_nDet, m_fd) ||
- ! write_nint32 (&_geom, m_fd) ||
- ! write_nfloat64 (&_calcTime, m_fd) ||
- ! write_nfloat64 (&_rotStart, m_fd) ||
- ! write_nfloat64 (&_rotInc, m_fd) ||
- ! write_nfloat64 (&_detStart, m_fd) ||
- ! write_nfloat64 (&_detInc, m_fd) ||
- ! write_nfloat64 (&_phmLen, m_fd) ||
- ! write_nint32 (&_remarksize, m_fd) ||
- (::write (m_fd, m_remark.c_str(), _remarksize) != _remarksize)) {
- sys_error (ERR_SEVERE, "Error writing header information [projections_write_header] %ld", _remarksize);
- return false;
- }
- m_headerSize = _hsize = lseek(m_fd, (off_t) 0, SEEK_CUR);
- if ((lseek(m_fd, 0, SEEK_SET) != 0) || ! write_nint32 (&_hsize, m_fd)) {
- sys_error (ERR_SEVERE, "Error writing header information [projections_write_header]");
- return false;
- }
+ fs.writeInt32 (_hsize);
+ fs.writeInt32 (_nView);
+ fs.writeInt32 (_nDet);
+ fs.writeInt32 (_geom);
+ fs.writeFloat64 (_calcTime);
+ fs.writeFloat64 (_rotStart);
+ fs.writeFloat64 (_rotInc);
+ fs.writeFloat64 (_detStart);
+ fs.writeFloat64 (_detInc);
+ fs.writeFloat64 (_phmLen);
+ fs.writeInt32 (_remarksize);
+ fs.write (m_remark.c_str(), _remarksize);
+
+ m_headerSize = fs.tellp();
+ _hsize = m_headerSize;
+ fs.seekp(0);
+ fs.writeInt32 (_hsize);
+ if (! fs)
+ return false;
return true;
}
-
/* NAME
* projections_read_header Read data header for projections file
*
*/
-
bool
-Projections::headerRead (void)
+Projections::headerRead (fnetorderstream& fs)
{
kuint32 _hsize;
kuint32 _nView;
kfloat64 _detInc;
kfloat64 _phmLen;
- if (m_fd < 0) {
- sys_error (ERR_SEVERE, "m_fd < 0 [projections_read_header]");
- return false;
- }
-
- if (lseek (m_fd, (off_t) 0, SEEK_SET) != (off_t) 0) {
- sys_error (ERR_WARNING, "Error seeking to beginning of field [projections_read_header]");
- return false;
- }
+ fs.seekg(0);
+ if (! fs)
+ return false;
off_t testPos;
- if (! read_nint32 (&_hsize, m_fd)) {
- sys_error (ERR_SEVERE, "Error reading header size , _hsize=%d [projections_read_header]", _hsize);
+ fs.readInt32 (_hsize);
+ fs.readInt32 (_nView);
+ fs.readInt32 (_nDet);
+ fs.readInt32 (_geom);
+ fs.readFloat64 (_calcTime);
+ fs.readFloat64 (_rotStart);
+ fs.readFloat64 (_rotInc);
+ fs.readFloat64 (_detStart);
+ fs.readFloat64 (_detInc);
+ fs.readFloat64 (_phmLen);
+ fs.readInt32 (_remarksize);
+ if (_remarksize > 100000) {
+ sys_error (ERR_SEVERE, "Insane _remarksize %d [projections::headerRead]", _remarksize);
return false;
}
- if ( ! read_nint32 (&_nView, m_fd) ||
- ! read_nint32 (&_nDet, m_fd) ||
- ! read_nint32 (&_geom, m_fd) ||
- ! read_nfloat64 (&_calcTime, m_fd) ||
- ! read_nfloat64 (&_rotStart, m_fd) ||
- ! read_nfloat64 (&_rotInc, m_fd) ||
- ! read_nfloat64 (&_detStart, m_fd) ||
- ! read_nfloat64 (&_detInc, m_fd) ||
- ! read_nfloat64 (&_phmLen, m_fd) ||
- ! read_nint32 (&_remarksize, m_fd))
- {
- sys_error (ERR_SEVERE, "Error reading header information , _remarksize=%d [projections_read_header]", _remarksize);
- return false;
- }
+
+ if (! fs) {
+ sys_error (ERR_SEVERE, "Error reading header information , _remarksize=%d [projections_read_header]", _remarksize);
+ return false;
+ }
char remarkStorage[_remarksize+1];
- if (::read (m_fd, &remarkStorage, _remarksize) != _remarksize) {
+ fs.read (remarkStorage, _remarksize);
+ if (! fs) {
sys_error (ERR_SEVERE, "Error reading remark, _remarksize = %d", _remarksize);
return false;
}
remarkStorage[_remarksize] = 0;
m_remark = remarkStorage;
- off_t _hsizeread = lseek(m_fd, 0, SEEK_CUR);
- if (_hsizeread != _hsize) {
+ off_t _hsizeread = fs.tellg();
+ if (!fs || _hsizeread != _hsize) {
sys_error (ERR_WARNING, "File header size read %ld != file header size stored %ld [read_projections_header]\n_remarksize=%ld", (long int) _hsizeread, _hsize, _remarksize);
return false;
}
return true;
}
-
bool
Projections::read (const char* filename)
{
- if ((m_fd = open(filename, OPEN_RDONLY | O_BINARY)) < 0) {
- sys_error (ERR_SEVERE, "Error opening projections file %s for input [open_projections]", filename);
+ frnetorderstream fileRead (filename, ios::in | ios::binary);
+
+ if (! fileRead)
return false;
- }
- if (! headerRead()) {
- sys_error (ERR_SEVERE, "Error reading projections file %s [open_projections]", filename);
+ if (! headerRead (fileRead))
return false;
- }
deleteProjData ();
- newProjData ();
+ newProjData();
for (int i = 0; i < m_nView; i++) {
- if (! detarrayRead (*m_projData[i], i))
+ if (! detarrayRead (fileRead, *m_projData[i], i))
break;
}
- close (m_fd);
- m_fd = -1;
-
+ fileRead.close();
return true;
}
bool
Projections::write (const char* filename)
{
- if ((m_fd = open (filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY
-#ifndef _WIN32
- , S_IWRITE | S_IREAD | S_IRGRP | S_IROTH
-#endif
- )) < 0) {
- sys_error (ERR_SEVERE, "Error opening file %s for output [projections_create]", filename);
- return false;
- }
- if (! headerWrite ()) {
- sys_error(ERR_SEVERE, "Error writing to file %s [create_projections]", filename);
- return false;
- }
+ frnetorderstream fs (filename, ios::out | ios::binary | ios::trunc | ios::ate);
- headerWrite ();
+ if (! fs) {
+ sys_error (ERR_SEVERE, "Error opening file %s for output [projections_create]", filename);
+ return false;
+ }
+ if (! headerWrite (fs))
+ return false;
if (m_projData != NULL) {
for (int i = 0; i < m_nView; i++) {
- if (! detarrayWrite (*m_projData[i], i))
+ if (! detarrayWrite (fs, *m_projData[i], i))
break;
}
}
+ if (! fs)
+ return false;
- close (m_fd);
- m_fd = -1;
+ fs.close();
return true;
}
*/
bool
-Projections::detarrayRead (DetectorArray& darray, const int iview)
+Projections::detarrayRead (fnetorderstream& fs, DetectorArray& darray, const int iview)
{
const int detval_bytes = darray.nDet() * sizeof(kfloat32);
const int detheader_bytes = sizeof(kfloat64) /* view_angle */ + sizeof(kint32) /* nDet */;
kfloat64 view_angle;
kuint32 nDet;
- if (m_fd < 0) {
- sys_error (ERR_SEVERE, "Tried to read detector array on closed file [detarrayRead]");
- return false;
- }
+ fs.seekg (start_data);
- if (lseek(m_fd, start_data, SEEK_SET) != start_data) {
- sys_error (ERR_SEVERE, "Error seeking detectory array [detarrayRead]");
- return false;
- }
-
- if (! read_nfloat64 (&view_angle, m_fd) ||
- ! read_nint32 (&nDet, m_fd)) {
- sys_error (ERR_SEVERE, "Error reading detector array [detarrayRead]");
- return false;
- }
+ fs.readFloat64 (view_angle);
+ fs.readInt32 (nDet);
darray.setViewAngle (view_angle);
// darray.setNDet ( nDet);
for (int i = 0; i < nDet; i++) {
kfloat32 detval;
- if (! read_nfloat32 (&detval, m_fd)) {
- sys_error (ERR_SEVERE, "Error reading detector array [detarrayRead]");
- return false;
- }
+ fs.readFloat32 (detval);
detval_ptr[i] = detval;
}
+ if (! fs)
+ return false;
return true;
}
*/
bool
-Projections::detarrayWrite (const DetectorArray& darray, const int iview)
+Projections::detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, const int iview)
{
const int detval_bytes = darray.nDet() * sizeof(float);
const int detheader_bytes = sizeof(kfloat64) /* view_angle */ + sizeof(kint32) /* nDet */;
kfloat64 view_angle = darray.viewAngle();
kuint32 nDet = darray.nDet();
- if (m_fd < 0) {
- sys_error (ERR_SEVERE, "Tried to write detector array with no file open [detarrayWrite]");
+ fs.seekp (start_data);
+ if (! fs) {
+ sys_error (ERR_SEVERE, "Error seeking detectory array [detarrayWrite]");
return false;
}
- if (lseek(m_fd, start_data, SEEK_SET) != start_data) {
- sys_error (ERR_SEVERE, "Error seeking detectory array [detarrayWrite]");
- return false;
- }
+ fs.writeFloat64 (view_angle);
+ fs.writeInt32 (nDet);
- if ( ! write_nfloat64 (&view_angle, m_fd)) {
- sys_error (ERR_SEVERE, "Error writing detector array [detarrayWrite]");
- return false;
- }
- if ( ! write_nint32 (&nDet, m_fd)) {
- sys_error (ERR_SEVERE, "Error writing detector array [detarrayWrite]");
- return false;
- }
for (int i = 0; i < nDet; i++) {
- kfloat32 detval = detval_ptr[i];
- if ( ! write_nfloat32 (&detval, m_fd)) {
- sys_error (ERR_SEVERE, "Error writing detector array [detarrayWrite]");
- return false;
- }
+ kfloat32 detval = detval_ptr[i];
+ fs.writeFloat32 (detval);
}
+ if (! fs)
+ return (false);
+
return true;
}
-
/* NAME
* prt_projections Print projections data
*
projects / ctsim.git / blobdiff