Gst各个组件的定义。

os posted @ 2013年9月26日 16:00 in GStreamer , 2854 阅读

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GObject

  |_____ GstObject

                   |____GstPad

                   |____GstElement

                                 |____GstBin

                                              |___GstPipeline

 |_____GstSignalObject

 

G_DEFINE_ABSTRACT_TYPE (GstObject, gst_object, G_TYPE_OBJECT);

 

G_DEFINE_TYPE (GstSignalObject, gst_signal_object, G_TYPE_OBJECT);

 

G_DEFINE_TYPE_WITH_CODE (GstPad, gst_pad, GST_TYPE_OBJECT, _do_init);

 

G_DEFINE_TYPE (GstPadTemplate, gst_pad_template, GST_TYPE_OBJECT);

 

G_DEFINE_TYPE_WITH_CODE (GstElementFactory, gst_element_factory,
    GST_TYPE_PLUGIN_FEATURE, _do_init);

 

GstElement是显式定义:

GType
gst_element_get_type (void)
{
  static volatile gsize gst_element_type = 0;

  if (g_once_init_enter (&gst_element_type)) {
    GType _type;
    static const GTypeInfo element_info = {
      sizeof (GstElementClass),
      gst_element_base_class_init,
      gst_element_base_class_finalize,
      (GClassInitFunc) gst_element_class_init,
      NULL,
      NULL,
      sizeof (GstElement),
      0,
      (GInstanceInitFunc) gst_element_init,
      NULL
    };

    _type = g_type_register_static (GST_TYPE_OBJECT, "GstElement",
        &element_info, G_TYPE_FLAG_ABSTRACT);

    _gst_elementclass_factory =
        g_quark_from_static_string ("GST_ELEMENTCLASS_FACTORY");
    g_once_init_leave (&gst_element_type, _type);
  }
  return gst_element_type;
}

 

GST_BOILERPLATE_FULL (GstBin, gst_bin, GstElement, GST_TYPE_ELEMENT, _do_init);

 

GST_BOILERPLATE_FULL (GstPipeline, gst_pipeline, GstBin, GST_TYPE_BIN,
    _do_init);

 

GstObject

 |____GstClock

G_DEFINE_TYPE (GstClock, gst_clock, GST_TYPE_OBJECT);

 

GstObject

|____GstTask

G_DEFINE_TYPE_WITH_CODE (GstTask, gst_task, GST_TYPE_OBJECT, _do_init);

GstObject

|____GstTaskPool

G_DEFINE_TYPE_WITH_CODE (GstTaskPool, gst_task_pool, GST_TYPE_OBJECT, _do_init);

 

 

GBoxed

  |____GstCaps

显式定义:

GType
gst_caps_get_type (void)
{
  static GType gst_caps_type = 0;

  if (G_UNLIKELY (gst_caps_type == 0)) {
    gst_caps_type = g_boxed_type_register_static ("GstCaps",
        (GBoxedCopyFunc) gst_caps_copy_conditional,
        (GBoxedFreeFunc) gst_caps_unref);

    g_value_register_transform_func (gst_caps_type,
        G_TYPE_STRING, gst_caps_transform_to_string);
  }

  return gst_caps_type;
}

 

GstMiniObject

 |_____GstEvent

G_DEFINE_TYPE_WITH_CODE (GstEvent, gst_event, GST_TYPE_MINI_OBJECT, _do_init);

 

GstMiniObject

 |_____GstBuffer

G_DEFINE_TYPE_WITH_CODE (GstBuffer, gst_buffer, GST_TYPE_MINI_OBJECT, _do_init);

 

GstMiniObject

|_____GstBufferList

G_DEFINE_TYPE (GstBufferList, gst_buffer_list, GST_TYPE_MINI_OBJECT);

 

 

GType
gst_type_find_get_type (void)
{
  static GType typefind_type = 0;

  if (G_UNLIKELY (typefind_type == 0)) {
    typefind_type = g_pointer_type_register_static ("GstTypeFind");
  }
  return typefind_type;
}

 

GstObject
|____GstPluginFeature

           |_______GstTypeFindFactory

G_DEFINE_TYPE_WITH_CODE (GstTypeFindFactory, gst_type_find_factory,
    GST_TYPE_PLUGIN_FEATURE, _do_init);

 

 

    


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