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/*
* $Id: win_stm.c 23822 2021-06-10 06:58:57Z yeti-dn $
* Copyright (C) 2014 Jeffrey J. Schwartz.
* E-mail: schwartz@physics.ucla.edu
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* This module serves to open WinSTM data files in Gywddion.
* Currently, multiple data channels are supported with limited
* meta data import. No file export is supported; it is assumed
* that no changes will be saved, or if so then another file
* format will be used.
*
* TODO: Import full meta data list.
*/
/**
* [FILE-MAGIC-USERGUIDE]
* WinSTM data
* .stm
* Read
**/
/**
* [FILE-MAGIC-FREEDESKTOP]
* <mime-type type="application/x-winstm-spm">
* <comment>WinSTM data file</comment>
* <magic priority="80">
* <match type="string" offset="0" value="WinSTM"/>
* </magic>
* </mime-type>
**/
#include <string.h>
#include <app/gwyapp.h>
#include <app/gwymoduleutils-file.h>
#include <libgwyddion/gwymacros.h>
#include <libgwyddion/gwymath.h>
#include <libgwymodule/gwymodule-file.h>
#include <libprocess/stats.h>
#include "err.h"
#include "get.h"
#define EXTENSION ".stm"
#define MAGIC "WinSTM"
#define MAGIC_SIZE (sizeof(MAGIC) - 1)
enum {
HEADER_SIZE = 1368,
DATA_SIZE = 768
};
typedef struct {
gint32 NChan;
gint32 NSpec;
gint32 Xres;
gint32 Yres;
gdouble Gain;
gdouble RangeX;
gdouble RangeY;
gdouble Bias;
gdouble Current;
} WinSTM_File;
static gboolean module_register(void);
static gint winSTM_detect (const GwyFileDetectInfo *fileinfo,
gboolean only_name);
static GwyContainer* winSTM_load (const gchar *filename,
GwyRunType mode,
GError **error);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Imports WinSTM (.stm) files."),
"Jeffrey J. Schwartz <schwartz@physics.ucla.edu>",
"0.6",
"Jeffrey J. Schwartz",
"April 2014",
};
GWY_MODULE_QUERY2(module_info, win_stm)
static gboolean
module_register(void)
{
gwy_file_func_register("win_stm",
N_("WinSTM files (.stm)"),
(GwyFileDetectFunc)&winSTM_detect,
(GwyFileLoadFunc)&winSTM_load,
NULL,
NULL);
return TRUE;
}
static gint
winSTM_detect(const GwyFileDetectInfo *fileinfo,
gboolean only_name)
{
if (only_name)
return g_str_has_suffix(fileinfo->name_lowercase, EXTENSION) ? 20 : 0;
if (fileinfo->buffer_len > MAGIC_SIZE
&& memcmp(fileinfo->head, MAGIC, MAGIC_SIZE) == 0)
return 100;
return 0;
}
static GwyContainer*
winSTM_load(const gchar *filename,
G_GNUC_UNUSED GwyRunType mode,
GError **error)
{
WinSTM_File stm;
GwyContainer *container = gwy_container_new();
GwyDataField *dfield;
guchar *buffer;
const guchar *p;
GError *err = NULL;
gsize size;
gdouble *data;
guint filemin;
gint k, v;
if (!gwy_file_get_contents(filename, &buffer, &size, &err)) {
err_GET_FILE_CONTENTS(error, &err);
g_clear_error(&err);
return NULL;
}
filemin = HEADER_SIZE;
if (size <= filemin) {
err_TOO_SHORT(error);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
if (memcmp(buffer, MAGIC, MAGIC_SIZE) != 0) {
err_FILE_TYPE(error, "WinSTM");
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
p = buffer + MAGIC_SIZE;
p += 926;
stm.NChan = gwy_get_gint32_le(&p);
stm.NSpec = gwy_get_gint16_le(&p);
p += 86;
stm.RangeX = gwy_get_gdouble_le(&p) * (1E-10);
stm.RangeY = gwy_get_gdouble_le(&p) * (1E-10);
p += 328;
filemin = HEADER_SIZE + DATA_SIZE;
if (size < filemin) {
err_TOO_SHORT(error);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
for (v = 0; v < stm.NChan; v++) {
gchar key[40];
gchar UnitWord[64];
gchar Title[100];
gchar *pch;
gchar *s;
GwyContainer *meta;
p += 2;
get_CHARARRAY0(Title, &p);
p += 522;
stm.Gain = gwy_get_gdouble_le(&p);
get_CHARARRAY0(UnitWord, &p);
pch = strstr(UnitWord, "ngstroms");
if (pch != NULL)
stm.Gain *= 1E-10;
if (strcmp(UnitWord, "pAmps") == 0)
stm.Gain *= 1E-12;
stm.Bias = gwy_get_gdouble_le(&p);
stm.Current = gwy_get_gdouble_le(&p) * (1E3);
stm.Xres = gwy_get_gint32_le(&p);
stm.Yres = gwy_get_gint32_le(&p);
p += 48;
dfield = gwy_data_field_new(stm.Xres, stm.Yres,
stm.RangeX, stm.RangeY, FALSE);
data = gwy_data_field_get_data(dfield);
filemin = HEADER_SIZE + DATA_SIZE + ((v+1) * 4 * stm.Xres * stm.Yres);
if (size < filemin) {
err_TOO_SHORT(error);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
for (k = 0; k < stm.Xres * stm.Yres; k++)
data[k] = gwy_get_gint32_le(&p) * stm.Gain;
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_xy(dfield), "m");
if (pch != NULL)
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(dfield), "m");
else {
if (strcmp(UnitWord, "pAmps") == 0)
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(dfield), "A");
else
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(dfield), "V");
}
g_snprintf(key, sizeof(key), "/%i/data", v);
gwy_container_set_object_by_name(container, key, dfield);
g_snprintf(key, sizeof(key), "/%i/data/title", v);
s = g_convert(Title, -1, "UTF-8", "ISO-8859-1", NULL, NULL, NULL);
gwy_container_set_string_by_name(container, key, (guchar *)s);
meta = gwy_container_new();
gwy_container_set_string_by_name(meta, "Bias",
(const guchar *)g_strdup_printf("%.3f V", stm.Bias));
gwy_container_set_string_by_name(meta, "Current Set Point",
(const guchar *)g_strdup_printf("%.3f pA", stm.Current));
g_snprintf(key, sizeof(key), "/%i/meta", v);
gwy_container_set_object_by_name(container, key, meta);
g_object_unref(meta);
g_object_unref(dfield);
}
gwy_file_channel_import_log_add(container, 0, NULL, filename);
gwy_file_abandon_contents(buffer, size, NULL);
return container;
}
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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