int
main (int argc,
char **argv)
{
int OK = 1;
babl_init ();
OK = ! babl_format_is_palette (babl_format_n (babl_type ("double"), 3));
if(1) {
unsigned char in[][1] = {{ 0},{ 1},{ 2},{15}};
unsigned char out[][4] = {{0,0,0,255},{127,0,0,255},{0,127,0,255},{255,255,255,255}};
const Babl *palA;// = babl_new_palette (NULL, 0);
//Babl *palB = babl_new_palette (NULL, 0);
//
babl_new_palette (NULL, &palA, NULL);
assert (palA);
CHECK_CONV("pal to rgba", unsigned char,
palA, babl_format("RGBA u8"),
in, out);
}
/**
* file_open_thumbnail:
* @gimp:
* @context:
* @progress:
* @file: an image file
* @size: requested size of the thumbnail
* @mime_type: return location for image MIME type
* @image_width: return location for image width
* @image_height: return location for image height
* @format: return location for image format (set to NULL if unknown)
* @num_layers: return location for number of layers
* (set to -1 if the number of layers is not known)
* @error:
*
* Attempts to load a thumbnail by using a registered thumbnail loader.
*
* Return value: the thumbnail image
*/
GimpImage *
file_open_thumbnail (Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
GFile *file,
gint size,
const gchar **mime_type,
gint *image_width,
gint *image_height,
const Babl **format,
gint *num_layers,
GError **error)
{
GimpPlugInProcedure *file_proc;
GimpProcedure *procedure;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress), NULL);
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (mime_type != NULL, NULL);
g_return_val_if_fail (image_width != NULL, NULL);
g_return_val_if_fail (image_height != NULL, NULL);
g_return_val_if_fail (format != NULL, NULL);
g_return_val_if_fail (num_layers != NULL, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
*image_width = 0;
*image_height = 0;
*format = NULL;
*num_layers = -1;
file_proc = file_procedure_find (gimp->plug_in_manager->load_procs, file,
NULL);
if (! file_proc || ! file_proc->thumb_loader)
return NULL;
procedure = gimp_pdb_lookup_procedure (gimp->pdb, file_proc->thumb_loader);
if (procedure && procedure->num_args >= 2 && procedure->num_values >= 1)
{
GimpPDBStatusType status;
GimpValueArray *return_vals;
GimpImage *image = NULL;
gchar *path = NULL;
if (! file_proc->handles_uri)
path = g_file_get_path (file);
if (! path)
path = g_file_get_uri (file);
return_vals =
gimp_pdb_execute_procedure_by_name (gimp->pdb,
context, progress, error,
gimp_object_get_name (procedure),
G_TYPE_STRING, path,
GIMP_TYPE_INT32, size,
G_TYPE_NONE);
g_free (path);
status = g_value_get_enum (gimp_value_array_index (return_vals, 0));
if (status == GIMP_PDB_SUCCESS &&
GIMP_VALUE_HOLDS_IMAGE_ID (gimp_value_array_index (return_vals, 1)))
{
image = gimp_value_get_image (gimp_value_array_index (return_vals, 1),
gimp);
if (gimp_value_array_length (return_vals) >= 3 &&
G_VALUE_HOLDS_INT (gimp_value_array_index (return_vals, 2)) &&
G_VALUE_HOLDS_INT (gimp_value_array_index (return_vals, 3)))
{
*image_width =
MAX (0, g_value_get_int (gimp_value_array_index (return_vals, 2)));
*image_height =
MAX (0, g_value_get_int (gimp_value_array_index (return_vals, 3)));
if (gimp_value_array_length (return_vals) >= 5 &&
G_VALUE_HOLDS_INT (gimp_value_array_index (return_vals, 4)))
{
gint value = g_value_get_int (gimp_value_array_index (return_vals, 4));
switch (value)
{
case GIMP_RGB_IMAGE:
*format = gimp_babl_format (GIMP_RGB,
GIMP_PRECISION_U8_GAMMA,
FALSE);
break;
case GIMP_RGBA_IMAGE:
*format = gimp_babl_format (GIMP_RGB,
GIMP_PRECISION_U8_GAMMA,
TRUE);
break;
case GIMP_GRAY_IMAGE:
*format = gimp_babl_format (GIMP_GRAY,
GIMP_PRECISION_U8_GAMMA,
FALSE);
break;
case GIMP_GRAYA_IMAGE:
*format = gimp_babl_format (GIMP_GRAY,
GIMP_PRECISION_U8_GAMMA,
TRUE);
break;
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
{
const Babl *rgb;
const Babl *rgba;
babl_new_palette ("-gimp-indexed-format-dummy",
&rgb, &rgba);
if (value == GIMP_INDEXED_IMAGE)
*format = rgb;
else
*format = rgba;
}
break;
default:
break;
}
}
if (gimp_value_array_length (return_vals) >= 6 &&
G_VALUE_HOLDS_INT (gimp_value_array_index (return_vals, 5)))
{
*num_layers =
MAX (0, g_value_get_int (gimp_value_array_index (return_vals, 5)));
}
}
if (image)
{
file_open_sanitize_image (image, FALSE);
*mime_type = file_proc->mime_type;
#ifdef GIMP_UNSTABLE
g_printerr ("opened thumbnail at %d x %d\n",
gimp_image_get_width (image),
gimp_image_get_height (image));
#endif
}
}
gimp_value_array_unref (return_vals);
return image;
}
return NULL;
}
