*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gsttagsetter
+ * @title: GstTagsetter
* @short_description: Element interface that allows setting and retrieval
* of media metadata
*
* Elements that support changing a stream's metadata will implement this
* interface. Examples of such elements are 'vorbisenc', 'theoraenc' and
* 'id3v2mux'.
- *
+ *
* If you just want to retrieve metadata in your application then all you
* need to do is watch for tag messages on your pipeline's bus. This
* interface is only for setting metadata, not for extracting it. To set tags
* setting the #GstTagMergeMode that is used for tag events that arrive at the
* tagsetter element (default mode is to keep existing tags).
* The application should do that before the element goes to %GST_STATE_PAUSED.
- *
+ *
* Elements implementing the #GstTagSetter interface often have to merge
* any tags received from upstream and the tags set by the application via
* the interface. This can be done like this:
*
- * |[
+ * |[<!-- language="C" -->
* GstTagMergeMode merge_mode;
* const GstTagList *application_tags;
* const GstTagList *event_tags;
* GstTagSetter *tagsetter;
* GstTagList *result;
- *
+ *
* tagsetter = GST_TAG_SETTER (element);
- *
+ *
* merge_mode = gst_tag_setter_get_tag_merge_mode (tagsetter);
* application_tags = gst_tag_setter_get_tag_list (tagsetter);
* event_tags = (const GstTagList *) element->event_tags;
- *
+ *
* GST_LOG_OBJECT (tagsetter, "merging tags, merge mode = %d", merge_mode);
* GST_LOG_OBJECT (tagsetter, "event tags: %" GST_PTR_FORMAT, event_tags);
* GST_LOG_OBJECT (tagsetter, "set tags: %" GST_PTR_FORMAT, application_tags);
- *
+ *
* result = gst_tag_list_merge (application_tags, event_tags, merge_mode);
- *
+ *
* GST_LOG_OBJECT (tagsetter, "final tags: %" GST_PTR_FORMAT, result);
* ]|
- *
- * Last reviewed on 2006-05-18 (0.10.6)
*/
#ifdef HAVE_CONFIG_H
#define GST_TAG_DATA_LOCK(data) g_mutex_lock(&data->lock)
#define GST_TAG_DATA_UNLOCK(data) g_mutex_unlock(&data->lock)
-GType
-gst_tag_setter_get_type (void)
-{
- static volatile gsize tag_setter_type = 0;
-
- if (g_once_init_enter (&tag_setter_type)) {
- GType _type;
- static const GTypeInfo tag_setter_info = {
- sizeof (GstTagSetterInterface), /* class_size */
- NULL, /* base_init */
- NULL, /* base_finalize */
- NULL,
- NULL, /* class_finalize */
- NULL, /* class_data */
- 0,
- 0,
- NULL
- };
-
- _type = g_type_register_static (G_TYPE_INTERFACE, "GstTagSetter",
- &tag_setter_info, 0);
-
- g_type_interface_add_prerequisite (_type, GST_TYPE_ELEMENT);
-
- gst_tag_key = g_quark_from_static_string ("GST_TAG_SETTER");
- g_once_init_leave (&tag_setter_type, _type);
- }
+G_DEFINE_INTERFACE_WITH_CODE (GstTagSetter, gst_tag_setter, GST_TYPE_ELEMENT,
+ gst_tag_key = g_quark_from_static_string ("gst-tag-setter-data");
+ );
- return tag_setter_type;
+static void
+gst_tag_setter_default_init (GstTagSetterInterface * klass)
+{
+ /* nothing to do here, it's a dummy interface */
}
static void
GstTagData *data = (GstTagData *) p;
if (data->list)
- gst_tag_list_free (data->list);
+ gst_tag_list_unref (data->list);
g_mutex_clear (&data->lock);
*
* Reset the internal taglist. Elements should call this from within the
* state-change handler.
- *
- * Since: 0.10.22
*/
void
gst_tag_setter_reset_tags (GstTagSetter * setter)
GST_TAG_DATA_LOCK (data);
if (data->list) {
- gst_tag_list_free (data->list);
+ gst_tag_list_unref (data->list);
data->list = NULL;
}
GST_TAG_DATA_UNLOCK (data);
* @...: more tag / value pairs to set
*
* Adds the given tag / value pairs on the setter using the given merge mode.
- * The list must be terminated with NULL.
+ * The list must be terminated with %NULL.
*/
void
gst_tag_setter_add_tags (GstTagSetter * setter, GstTagMergeMode mode,
* @...: more tag / GValue pairs to set
*
* Adds the given tag / GValue pairs on the setter using the given merge mode.
- * The list must be terminated with NULL.
+ * The list must be terminated with %NULL.
*/
void
gst_tag_setter_add_tag_values (GstTagSetter * setter, GstTagMergeMode mode,
* @var_args: tag / value pairs to set
*
* Adds the given tag / value pairs on the setter using the given merge mode.
- * The list must be terminated with NULL.
+ * The list must be terminated with %NULL.
*/
void
gst_tag_setter_add_tag_valist (GstTagSetter * setter, GstTagMergeMode mode,
* @var_args: tag / GValue pairs to set
*
* Adds the given tag / GValue pairs on the setter using the given merge mode.
- * The list must be terminated with NULL.
+ * The list must be terminated with %NULL.
*/
void
gst_tag_setter_add_tag_valist_values (GstTagSetter * setter,
* @value: GValue to set for the tag
*
* Adds the given tag / GValue pair on the setter using the given merge mode.
- *
- * Since: 0.10.24
*/
void
gst_tag_setter_add_tag_value (GstTagSetter * setter,
*
* This function is not thread-safe.
*
- * Returns: (transfer none): a current snapshot of the taglist used in the
- * setter or NULL if none is used.
+ * Returns: (transfer none) (nullable): a current snapshot of the
+ * taglist used in the setter or %NULL if none is used.
*/
const GstTagList *
gst_tag_setter_get_tag_list (GstTagSetter * setter)
projects / platform / upstream / gstreamer.git / blobdiff