Object Hierarchy:

Gst.TypeFindFactory Gst.TypeFindFactory Gst.TypeFindFactory Gst.PluginFeature Gst.PluginFeature Gst.PluginFeature->Gst.TypeFindFactory Gst.Object Gst.Object Gst.Object->Gst.PluginFeature GLib.InitiallyUnowned GLib.InitiallyUnowned GLib.InitiallyUnowned->Gst.Object GLib.Object GLib.Object GLib.Object->GLib.InitiallyUnowned


[ CCode ( lower_case_csuffix = "type_find_factory" , type_id = "gst_type_find_factory_get_type ()" ) ]
public sealed class TypeFindFactory : PluginFeature

These functions allow querying information about registered typefind functions.

How to create and register these functions is described in the section "Writing typefind functions".

The following example shows how to write a very simple typefinder that identifies the given data. You can get quite a bit more complicated than that though.

  typedef struct {
guint8 *data;
guint size;
guint probability;
GstCaps *data;
} MyTypeFind;
static void
my_peek (gpointer data, gint64 offset, guint size)
MyTypeFind *find = (MyTypeFind *) data;
if (offset >= 0 && offset + size <= find->size) {
return find->data + offset;
return NULL;
static void
my_suggest (gpointer data, guint probability, GstCaps *caps)
MyTypeFind *find = (MyTypeFind *) data;
if (probability > find->probability) {
find->probability = probability;
gst_caps_replace (&find->caps, caps);
static GstCaps *
find_type (guint8 *data, guint size)
GList *walk, *type_list;
MyTypeFind find = {data, size, 0, NULL};
GstTypeFind gst_find = {my_peek, my_suggest, &find, };
walk = type_list = gst_type_find_factory_get_list ();
while (walk) {
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
walk = g_list_next (walk)
gst_type_find_factory_call_function (factory, &gst_find);
g_list_free (type_list);
return find.caps;

Namespace: Gst
Package: gstreamer-1.0


Static methods:

Creation methods:


Inherited Members: