static GwyContainer*
burleigh_load(const gchar *filename,
G_GNUC_UNUSED GwyRunType mode,
GError **error)
{
GwySIUnit *unit;
GwyContainer *container = NULL;
guchar *buffer = NULL;
const guchar *p;
gsize size = 0;
GError *err = NULL;
IMGFile imgfile;
GwyDataField *dfield;
gdouble *data;
const gint16 *d;
gdouble zoom;
guint i;
if (!gwy_file_get_contents(filename, &buffer, &size, &err)) {
err_GET_FILE_CONTENTS(error, &err);
return NULL;
}
if (size < HEADER_SIZE_MIN + 2) {
err_TOO_SHORT(error);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
gwy_clear(&imgfile, 1);
p = buffer;
imgfile.version = gwy_get_gfloat_le(&p);
imgfile.version_int = GWY_ROUND(10*imgfile.version);
if (imgfile.version_int == 21) {
d = burleigh_load_v21(&imgfile, buffer, size, error);
if (!d) {
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
}
else {
g_set_error(error, GWY_MODULE_FILE_ERROR, GWY_MODULE_FILE_ERROR_DATA,
_("File format version %.1f is not supported."),
imgfile.version);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
zoom = burleigh_get_zoom_v21(&imgfile);
if (err_DIMENSION(error, imgfile.xres)
|| err_DIMENSION(error, imgfile.yres)) {
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
dfield = gwy_data_field_new(imgfile.xres, imgfile.yres,
Angstrom*imgfile.xrange/zoom,
Angstrom*imgfile.yrange/zoom,
FALSE);
data = gwy_data_field_get_data(dfield);
for (i = 0; i < imgfile.xres*imgfile.yres; i++)
data[i] = GINT16_FROM_LE(d[i])*imgfile.zrange/4095.0;
gwy_file_abandon_contents(buffer, size, NULL);
unit = gwy_si_unit_new("m");
gwy_data_field_set_si_unit_xy(dfield, unit);
g_object_unref(unit);
container = gwy_container_new();
switch (imgfile.data_type) {
case BURLEIGH_CURRENT:
unit = gwy_si_unit_new("A");
gwy_container_set_string_by_name(container, "/0/data/title",
g_strdup("Current"));
gwy_data_field_multiply(dfield, Picoampere);
break;
case BURLEIGH_TOPOGRAPHY:
unit = gwy_si_unit_new("m");
gwy_container_set_string_by_name(container, "/0/data/title",
g_strdup("Topography"));
gwy_data_field_multiply(dfield, Angstrom);
break;
default:
unit = gwy_si_unit_new("m");
break;
}
gwy_data_field_set_si_unit_z(dfield, unit);
g_object_unref(unit);
gwy_container_set_object_by_name(container, "/0/data", dfield);
g_object_unref(dfield);
gwy_file_channel_import_log_add(container, 0, NULL, filename);
return container;
}
static GwyContainer*
burleigh_load(const gchar *filename)
{
GwySIUnit *unit;
GwyContainer *container = NULL;
guchar *buffer = NULL;
const guchar *p;
gsize size = 0;
GError *err = NULL;
IMGFile imgfile;
GwyDataField *dfield;
gdouble *data;
const gint16 *d;
gdouble scale;
guint i;
if (!gwy_file_get_contents(filename, &buffer, &size, &err)) {
g_warning("Cannot get file contents");
g_clear_error(&err);
return NULL;
}
if (size < HEADER_SIZE_MIN + 2) {
g_warning("File is too short");
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
memset(&imgfile, 0, sizeof(imgfile));
p = buffer;
imgfile.version = get_FLOAT(&p);
imgfile.version_int = ROUND(10*imgfile.version);
if (imgfile.version_int == 21) {
d = burleigh_load_v21(&imgfile, buffer, size);
if (!d) {
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
}
else {
g_warning("File format version %.f is not supported", imgfile.version);
gwy_file_abandon_contents(buffer, size, NULL);
return NULL;
}
dfield = GWY_DATA_FIELD(gwy_data_field_new(imgfile.xres, imgfile.yres,
Angstrom*imgfile.xrange,
Angstrom*imgfile.yrange,
FALSE));
data = gwy_data_field_get_data(dfield);
scale = Angstrom * imgfile.z_gain * imgfile.zrange;
for (i = 0; i < imgfile.xres*imgfile.yres; i++)
data[i] = scale * GINT16_FROM_LE(d[i]);
gwy_file_abandon_contents(buffer, size, NULL);
unit = GWY_SI_UNIT(gwy_si_unit_new("m"));
gwy_data_field_set_si_unit_xy(dfield, unit);
g_object_unref(unit);
container = GWY_CONTAINER(gwy_container_new());
switch (imgfile.data_type) {
case BURLEIGH_CURRENT:
unit = GWY_SI_UNIT(gwy_si_unit_new("A"));
gwy_container_set_string_by_name(container, "/filename/title",
g_strdup("Current"));
break;
case BURLEIGH_TOPOGRAPHY:
unit = GWY_SI_UNIT(gwy_si_unit_new("m"));
gwy_container_set_string_by_name(container, "/filename/title",
g_strdup("Topography"));
break;
default:
unit = GWY_SI_UNIT(gwy_si_unit_new("m"));
break;
}
gwy_data_field_set_si_unit_z(dfield, unit);
g_object_unref(unit);
gwy_container_set_object_by_name(container, "/0/data", (GObject*)dfield);
g_object_unref(dfield);
return container;
}
