go-gst/gst/gst_registry.go

package gst

// #include "gst.go.h"
import "C"
import (
	"fmt"
	"unsafe"

	"github.com/gotk3/gotk3/glib"
)

// Registry is a go representation of a GstRegistry.
type Registry struct{ *Object }

// GetRegistry returns the default global GstRegistry.
func GetRegistry() *Registry {
	registry := C.gst_registry_get()
	return wrapRegistry(glib.Take(unsafe.Pointer(registry)))
}

// Instance returns the underlying GstRegistry instance.
func (r *Registry) Instance() *C.GstRegistry { return C.toGstRegistry(r.unsafe()) }

// FindPlugin retrieves the plugin by the given name. Unref after usage.
func (r *Registry) FindPlugin(name string) (*Plugin, error) {
	cName := C.CString(name)
	defer C.free(unsafe.Pointer(cName))
	plugin := C.gst_registry_find_plugin((*C.GstRegistry)(r.Instance()), (*C.gchar)(cName))
	if plugin == nil {
		return nil, fmt.Errorf("No plugin named %s found", name)
	}
	return wrapPlugin(glib.Take(unsafe.Pointer(plugin))), nil
}

// LookupFeature looks up the given plugin feature by name. Unref after usage.
func (r *Registry) LookupFeature(name string) (*PluginFeature, error) {
	cName := C.CString(name)
	defer C.free(unsafe.Pointer(cName))
	feat := C.gst_registry_lookup_feature((*C.GstRegistry)(r.Instance()), (*C.gchar)(cName))
	if feat == nil {
		return nil, fmt.Errorf("No feature named %s found", name)
	}
	return wrapPluginFeature(glib.Take(unsafe.Pointer(feat))), nil
}