// returns list of hashtables of (int -> struct _openslide_tiffdump_item)
GSList *_openslide_tiffdump_create(FILE *f) {
// read and check magic
uint16_t magic;
fseeko(f, 0, SEEK_SET);
if (fread(&magic, sizeof magic, 1, f) != 1) {
return NULL;
}
if (magic != TIFF_BIGENDIAN && magic != TIFF_LITTLEENDIAN) {
return NULL;
}
// g_debug("magic: %d", magic);
int32_t version = read_uint16(f, magic);
int64_t diroff = read_uint32(f, magic);
// g_debug("version: %d", version);
if (version != TIFF_VERSION) {
return NULL;
}
// initialize loop detector
GHashTable *loop_detector = g_hash_table_new_full(_openslide_int64_hash,
_openslide_int64_equal,
_openslide_int64_free,
NULL);
// read all the directories
GSList *result = NULL;
while (diroff != 0) {
// read a directory
GHashTable *ht = read_directory(f, &diroff, loop_detector, magic);
// was the directory successfully read?
if (ht == NULL) {
// no, so destroy everything
_openslide_tiffdump_destroy(result);
result = NULL;
break;
}
// add result to list
result = g_slist_prepend(result, ht);
}
g_hash_table_unref(loop_detector);
return g_slist_reverse(result);
}
bool _openslide_try_hamamatsu_ndpi(openslide_t *osr, const char *filename,
struct _openslide_hash *quickhash1,
GError **err) {
bool success = false;
char *image_filenames = NULL;
char *dirname = g_path_get_dirname(filename);
image_filenames = g_new0(char, 1);
image_filenames = g_build_filename(dirname, filename, NULL);
FILE *f = _openslide_fopen(image_filenames, "rb", NULL);
if (!f) {
g_set_error(err, OPENSLIDE_ERROR, OPENSLIDE_ERROR_FORMAT_NOT_SUPPORTED,
"Can't open file");
return false;
}
//dump data from NDPI file. from this function, we get all information about
//NDPI file (number of image, size of image, offset, etc)
GSList *dump = _openslide_tiffdump_create(f, err);
if (!dump) {
fclose(f);
return false;
}
fclose(f);
const char *groupname = GROUP_VMS;
GKeyFile *key_file = g_key_file_new();
//NDPI file dont have key file. So, I am create the key using this method
//but, the problem is I can not show the property using :
//openslide_get_property_names(osr)
//are you know why?
g_key_file_set_string(key_file, groupname, "ImageFile", image_filenames);
//I dont get information about number of layers from NDPI file.
//So, I set this num_layers to 1
int num_layers = 1;
g_key_file_set_integer(key_file, groupname, "NoLayers", num_layers);
//create NDPI key from from dump variable
//create key_file from this GSList.
//We will get some of image from NDPI file with jpeg format
//I save the count number of all jpeg image in "num_images" variable
//some of the jpeg file dont have complete header (dont have restart marker offset)
//"num_jpegs" is total number of jpeg with complete header
int num_images; //the total number of jpegs images
int num_jpegs; //the total number of jpegs with complete header
//I am still confused how to create index name from extracted
//NDPI file. So, I am create a file with symbols [%].
//please check this function
ndpi_create_key_file(dump, key_file,
groupname, &num_images, &num_jpegs);
//I dont get information about num_cols and num_rows
//So, I set this "num_cols" variable like this
int num_cols;
if(num_jpegs>1)
num_cols = 2;
else
num_cols = 1;
// add properties
if (osr) {
add_properties(osr->properties, key_file, groupname);
}
//I am not yet add the macros file
//we can get the macros file from key_file
success = hamamatsu_ndpi_part2(osr,
num_jpegs, image_filenames,
num_cols, key_file,
err);
_openslide_tiffdump_destroy(dump);
g_key_file_free(key_file);
return success;
}
