/* Write a libvips NULL-terminated utf-8 string into a entry tagged with a
* encoding. UserComment is like this, for example.
*/
static void
vips_exif_set_string_encoding( ExifData *ed,
ExifEntry *entry, unsigned long component, const char *data )
{
char *str;
int len;
str = drop_tail( data );
/* libexif can only really save ASCII to things like UserComment.
*/
#ifdef HAVE_G_STR_TO_ASCII
{
char *ascii;
ascii = g_str_to_ascii( str, NULL );
g_free( str );
str = ascii;
}
#endif /*HAVE_G_STR_TO_ASCII*/
/* libexif comment strings are not NULL-terminated, and have an
* encoding tag (always ASCII) in the first 8 bytes.
*/
len = strlen( str );
vips_exif_alloc_string( entry, sizeof( ASCII_COMMENT ) - 1 + len );
memcpy( entry->data, ASCII_COMMENT, sizeof( ASCII_COMMENT ) - 1 );
memcpy( entry->data + sizeof( ASCII_COMMENT ) - 1, str, len );
g_free( str );
}
/* Write a libvips NULL-terminated utf-8 string into an ASCII entry. Tags like
* ImageDescription work like this.
*/
static void
vips_exif_set_string_ascii( ExifData *ed,
ExifEntry *entry, unsigned long component, const char *data )
{
char *str;
int len;
str = drop_tail( data );
/* libexif can only really save ASCII to things like UserComment.
*/
#ifdef HAVE_G_STR_TO_ASCII
{
char *ascii;
ascii = g_str_to_ascii( str, NULL );
g_free( str );
str = ascii;
}
#endif /*HAVE_G_STR_TO_ASCII*/
/* ASCII strings are NULL-terminated.
*/
len = strlen( str );
vips_exif_alloc_string( entry, len + 1 );
memcpy( entry->data, str, len + 1 );
entry->format = EXIF_FORMAT_ASCII;
g_free( str );
}
/**
* gst_encoding_target_load:
* @name: the name of the #GstEncodingTarget to load (automatically
* converted to lower case internally as capital letters are not
* valid for target names).
* @category: (allow-none): the name of the target category, like
* #GST_ENCODING_CATEGORY_DEVICE. Can be %NULL
* @error: If an error occured, this field will be filled in.
*
* Searches for the #GstEncodingTarget with the given name, loads it
* and returns it.
*
* If the category name is specified only targets from that category will be
* searched for.
*
* Returns: (transfer full): The #GstEncodingTarget if available, else %NULL.
*/
GstEncodingTarget *
gst_encoding_target_load (const gchar * name, const gchar * category,
GError ** error)
{
gint i;
gchar *p, *lname, *lfilename = NULL, *tldir, **encoding_target_dirs;
const gchar *envvar;
GstEncodingTarget *target = NULL;
g_return_val_if_fail (name != NULL, NULL);
p = lname = g_str_to_ascii (name, NULL);
for (; *p; ++p)
*p = g_ascii_tolower (*p);
if (!validate_name (lname))
goto invalid_name;
if (category && !validate_name (category))
goto invalid_category;
lfilename = g_strdup_printf ("%s" GST_ENCODING_TARGET_SUFFIX, lname);
envvar = g_getenv ("GST_ENCODING_TARGET_PATH");
if (envvar) {
encoding_target_dirs = g_strsplit (envvar, G_SEARCHPATH_SEPARATOR_S, -1);
for (i = 0; encoding_target_dirs[i]; i++) {
target = gst_encoding_target_subload (encoding_target_dirs[i],
category, lfilename, error);
if (target)
break;
}
g_strfreev (encoding_target_dirs);
if (target)
goto done;
}
/* Try from local profiles */
tldir =
g_build_filename (g_get_user_data_dir (), "gstreamer-" GST_API_VERSION,
GST_ENCODING_TARGET_DIRECTORY, NULL);
target = gst_encoding_target_subload (tldir, category, lfilename, error);
g_free (tldir);
if (target == NULL) {
/* Try from system-wide profiles */
tldir =
g_build_filename (GST_DATADIR, "gstreamer-" GST_API_VERSION,
GST_ENCODING_TARGET_DIRECTORY, NULL);
target = gst_encoding_target_subload (tldir, category, lfilename, error);
g_free (tldir);
}
if (!target) {
GList *tmp, *targets = gst_encoding_list_all_targets (NULL);
for (tmp = targets; tmp; tmp = tmp->next) {
gint i;
GstEncodingTarget *tmptarget = tmp->data;
gchar **names = g_strsplit (tmptarget->name, ";", -1);
for (i = 0; names[i]; i++) {
if (!g_strcmp0 (names[i], lname) && (!category ||
!g_strcmp0 (tmptarget->category, category))) {
target = gst_object_ref (tmptarget);
break;
}
}
g_strfreev (names);
if (target)
break;
}
g_list_free_full (targets, gst_object_unref);
}
done:
g_free (lfilename);
g_free (lname);
return target;
invalid_name:
{
GST_ERROR ("Invalid name for encoding target : '%s'", name);
goto done;
}
invalid_category:
{
GST_ERROR ("Invalid name for encoding category : '%s'", category);
goto done;
}
}