DynamicTypeFactory

gstreamer.DynamicTypeFactory is used to represent a type that can be automatically loaded the first time it is used. For example, a non-standard type for use in caps fields.

In general, applications and plugins don't need to use the factory beyond registering the type in a plugin init function. Once that is done, the type is stored in the registry, and ready as soon as the registry is loaded.

Registering a type for dynamic loading


static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_dynamic_type_register (plugin, GST_TYPE_CUSTOM_CAPS_FIELD);
}

class DynamicTypeFactory : PluginFeature {

protected

GstDynamicTypeFactory* gstDynamicTypeFactory;

GstDynamicTypeFactory* getDynamicTypeFactoryStruct(bool transferOwnership);

void* getStruct();

this(GstDynamicTypeFactory* gstDynamicTypeFactory, bool ownedRef);

static GType getType();

static GType load(string factoryname);

}

Constructors

this this(GstDynamicTypeFactory* gstDynamicTypeFactory, bool ownedRef): Sets our main struct and passes it to the parent class.

Members

Functions

getDynamicTypeFactoryStruct GstDynamicTypeFactory* getDynamicTypeFactoryStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*

Static functions

getType GType getType()
load GType load(string factoryname)

Variables

gstDynamicTypeFactory GstDynamicTypeFactory* gstDynamicTypeFactory;: the main Gtk struct

Inherited Members

From PluginFeature

gstPluginFeature GstPluginFeature* gstPluginFeature;: the main Gtk struct
getPluginFeatureStruct GstPluginFeature* getPluginFeatureStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
listCopy ListG listCopy(ListG list): Copies the list of features. Caller should call gst_plugin_feature_list_free when done with the list.
listDebug void listDebug(ListG list): Debug the plugin feature names in list.
listFree void listFree(ListG list): Unrefs each member of list, then frees the list.
rankCompareFunc int rankCompareFunc(void* p1, void* p2): Compares the two given gstreamer.PluginFeature instances. This function can be used as a GCompareFunc when sorting by rank and then by name.
checkVersion bool checkVersion(uint minMajor, uint minMinor, uint minMicro): Checks whether the given plugin feature is at least the required version
getPlugin Plugin getPlugin(): Get the plugin that provides this feature.
getPluginName string getPluginName(): Get the name of the plugin that provides this feature.
getRank uint getRank(): Gets the rank of a plugin feature.
load PluginFeature load(): Loads the plugin containing feature if it's not already loaded. feature is unaffected; use the return value instead.
setRank void setRank(uint rank): Specifies a rank for a plugin feature, so that autoplugging uses the most appropriate feature.

gstreamer DynamicTypeFactory classes

DynamicTypeFactory