/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
+ * 2000,2004 Wim Taymans <wim@fluendo.com>
*
* gstelement.h: Header for GstElement
*
#include <gst/gstobject.h>
#include <gst/gstpad.h>
#include <gst/gstclock.h>
+#include <gst/gstelementfactory.h>
#include <gst/gstplugin.h>
#include <gst/gstpluginfeature.h>
#include <gst/gstindex.h>
+#include <gst/gstiterator.h>
+#include <gst/gstmessage.h>
#include <gst/gsttag.h>
G_BEGIN_DECLS
-typedef struct _GstElementDetails GstElementDetails;
+GST_EXPORT GType _gst_element_type;
-/* FIXME: need translatable stuff in here (how handle in registry)? */
-struct _GstElementDetails {
- gchar *longname; /* long, english name */
- gchar *klass; /* type of element, as hierarchy */
- gchar *description; /* insights of one form or another */
- gchar *author; /* who wrote this thing? */
-
- gpointer _gst_reserved[GST_PADDING];
-};
-#define GST_ELEMENT_DETAILS(longname,klass,description,author) \
- { longname, klass, description, author, GST_PADDING_INIT }
-#define GST_IS_ELEMENT_DETAILS(details) ( \
- (details) && ((details)->longname != NULL) && ((details)->klass != NULL) \
- && ((details)->description != NULL) && ((details)->author != NULL))
+#define GST_TYPE_ELEMENT (_gst_element_type)
+#define GST_IS_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_ELEMENT))
+#define GST_IS_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_ELEMENT))
+#define GST_ELEMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_ELEMENT, GstElementClass))
+#define GST_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_ELEMENT, GstElement))
+#define GST_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_ELEMENT, GstElementClass))
+#define GST_ELEMENT_CAST(obj) ((GstElement*)(obj))
#define GST_NUM_STATES 4
-
/* NOTE: this probably should be done with an #ifdef to decide
* whether to safe-cast or to just do the non-checking cast.
*/
#define GST_STATE(obj) (GST_ELEMENT(obj)->current_state)
#define GST_STATE_PENDING(obj) (GST_ELEMENT(obj)->pending_state)
+#define GST_STATE_ERROR(obj) (GST_ELEMENT(obj)->state_error)
/* Note: using 8 bit shift mostly "just because", it leaves us enough room to grow <g> */
#define GST_STATE_TRANSITION(obj) ((GST_STATE(obj)<<8) | GST_STATE_PENDING(obj))
#define GST_STATE_PAUSED_TO_READY ((GST_STATE_PAUSED<<8) | GST_STATE_READY)
#define GST_STATE_READY_TO_NULL ((GST_STATE_READY<<8) | GST_STATE_NULL)
-extern GType _gst_element_type;
-
-#define GST_TYPE_ELEMENT (_gst_element_type)
-#define GST_IS_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_ELEMENT))
-#define GST_IS_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_ELEMENT))
-#define GST_ELEMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_ELEMENT, GstElementClass))
-#define GST_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_ELEMENT, GstElement))
-#define GST_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_ELEMENT, GstElementClass))
-
/* convenience functions */
#ifdef G_HAVE_ISO_VARARGS
#define GST_ELEMENT_QUERY_TYPE_FUNCTION(functionname, ...) \
GST_EVENT_MASK_FUNCTION (GstElement*, functionname, a);
#endif
-typedef enum {
- /* element is complex (for some def.) and generally require a cothread */
- GST_ELEMENT_COMPLEX = GST_OBJECT_FLAG_LAST,
- /* input and output pads aren't directly coupled to each other
- examples: queues, multi-output async readers, etc. */
- GST_ELEMENT_DECOUPLED,
- /* this element should be placed in a thread if at all possible */
- GST_ELEMENT_THREAD_SUGGESTED,
- /* this element, for some reason, has a loop function that performs
- * an infinite loop without calls to gst_element_yield () */
- GST_ELEMENT_INFINITE_LOOP,
- /* there is a new loopfunction ready for placement */
- GST_ELEMENT_NEW_LOOPFUNC,
- /* if this element can handle events */
- GST_ELEMENT_EVENT_AWARE,
- /* use threadsafe property get/set implementation */
- GST_ELEMENT_USE_THREADSAFE_PROPERTIES,
-
+typedef enum
+{
/* private flags that can be used by the scheduler */
GST_ELEMENT_SCHEDULER_PRIVATE1,
GST_ELEMENT_SCHEDULER_PRIVATE2,
/* ignore state changes from parent */
GST_ELEMENT_LOCKED_STATE,
- /* element is in error */
- GST_ELEMENT_ERROR,
+ /* the element is a sink */
+ GST_ELEMENT_IS_SINK,
/* use some padding for future expansion */
GST_ELEMENT_FLAG_LAST = GST_OBJECT_FLAG_LAST + 16
} GstElementFlags;
-#define GST_ELEMENT_IS_THREAD_SUGGESTED(obj) (GST_FLAG_IS_SET(obj,GST_ELEMENT_THREAD_SUGGESTED))
-#define GST_ELEMENT_IS_EVENT_AWARE(obj) (GST_FLAG_IS_SET(obj,GST_ELEMENT_EVENT_AWARE))
-#define GST_ELEMENT_IS_DECOUPLED(obj) (GST_FLAG_IS_SET(obj,GST_ELEMENT_DECOUPLED))
+#define GST_ELEMENT_IS_LOCKED_STATE(obj) (GST_FLAG_IS_SET(obj,GST_ELEMENT_LOCKED_STATE))
#define GST_ELEMENT_NAME(obj) (GST_OBJECT_NAME(obj))
-#define GST_ELEMENT_PARENT(obj) (GST_OBJECT_PARENT(obj))
-#define GST_ELEMENT_MANAGER(obj) (((GstElement*)(obj))->manager)
-#define GST_ELEMENT_SCHED(obj) (((GstElement*)(obj))->sched)
-#define GST_ELEMENT_CLOCK(obj) (((GstElement*)(obj))->clock)
-#define GST_ELEMENT_PADS(obj) ((obj)->pads)
-
-typedef struct _GstElementFactory GstElementFactory;
-typedef struct _GstElementFactoryClass GstElementFactoryClass;
-
-typedef void (*GstElementLoopFunction) (GstElement *element);
-typedef void (*GstElementPreRunFunction) (GstElement *element);
-typedef void (*GstElementPostRunFunction) (GstElement *element);
-
-struct _GstElement {
+#define GST_ELEMENT_PARENT(obj) (GST_ELEMENT_CAST(GST_OBJECT_PARENT(obj)))
+#define GST_ELEMENT_MANAGER(obj) (GST_ELEMENT_CAST(obj)->manager)
+#define GST_ELEMENT_BUS(obj) (GST_ELEMENT_CAST(obj)->bus)
+#define GST_ELEMENT_SCHEDULER(obj) (GST_ELEMENT_CAST(obj)->scheduler)
+#define GST_ELEMENT_CLOCK(obj) (GST_ELEMENT_CAST(obj)->clock)
+#define GST_ELEMENT_PADS(obj) (GST_ELEMENT_CAST(obj)->pads)
+
+/**
+ * GST_ELEMENT_ERROR:
+ * @el: the element that throws the error
+ * @domain: like CORE, LIBRARY, RESOURCE or STREAM (see #GstError)
+ * @code: error code defined for that domain (see #GstError)
+ * @message: the message to display (format string and args enclosed in round brackets)
+ * @debug: debugging information for the message (format string and args enclosed in round brackets)
+ *
+ * Utility function that elements can use in case they encountered a fatal
+ * data processing error. The pipeline will throw an error signal and the
+ * application will be requested to stop further media processing.
+ */
+#define GST_ELEMENT_ERROR(el, domain, code, text, debug) \
+G_STMT_START { \
+ gchar *__txt = _gst_element_error_printf text; \
+ gchar *__dbg = _gst_element_error_printf debug; \
+ if (__txt) \
+ GST_ERROR_OBJECT (el, "%s", __txt); \
+ if (__dbg) \
+ GST_ERROR_OBJECT (el, "%s", __dbg); \
+ gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_ERROR, \
+ GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \
+ __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \
+} G_STMT_END
+
+/* log a (non-fatal) warning message and post it on the bus */
+#define GST_ELEMENT_WARNING(el, domain, code, text, debug) \
+G_STMT_START { \
+ gchar *__txt = _gst_element_error_printf text; \
+ gchar *__dbg = _gst_element_error_printf debug; \
+ if (__txt) \
+ GST_WARNING_OBJECT (el, "%s", __txt); \
+ if (__dbg) \
+ GST_WARNING_OBJECT (el, "%s", __dbg); \
+ gst_element_message_full (GST_ELEMENT(el), GST_MESSAGE_WARNING, \
+ GST_ ## domain ## _ERROR, GST_ ## domain ## _ERROR_ ## code, \
+ __txt, __dbg, __FILE__, GST_FUNCTION, __LINE__); \
+} G_STMT_END
+
+/* the state change mutexes and conds */
+#define GST_STATE_GET_LOCK(elem) (GST_ELEMENT_CAST(elem)->state_lock)
+#define GST_STATE_LOCK(elem) g_mutex_lock(GST_STATE_GET_LOCK(elem))
+#define GST_STATE_TRYLOCK(elem) g_mutex_trylock(GST_STATE_GET_LOCK(elem))
+#define GST_STATE_UNLOCK(elem) g_mutex_unlock(GST_STATE_GET_LOCK(elem))
+#define GST_STATE_GET_COND(elem) (GST_ELEMENT_CAST(elem)->state_cond)
+#define GST_STATE_WAIT(elem) g_cond_wait (GST_STATE_GET_COND (elem), GST_STATE_GET_LOCK (elem))
+#define GST_STATE_TIMED_WAIT(elem, timeval) g_cond_timed_wait (GST_STATE_GET_COND (elem), GST_STATE_GET_LOCK (elem),\
+ timeval)
+#define GST_STATE_SIGNAL(elem) g_cond_signal (GST_STATE_GET_COND (elem));
+#define GST_STATE_BROADCAST(elem) g_cond_broadcast (GST_STATE_GET_COND (elem));
+
+struct _GstElement
+{
GstObject object;
- /* element state and scheduling */
- guint8 current_state;
- guint8 pending_state;
- GstElementLoopFunction loopfunc;
-
- GstScheduler *sched;
- gpointer sched_private;
+ /*< public >*/ /* with STATE_LOCK */
+ /* element state */
+ GMutex *state_lock;
+ GCond *state_cond;
+ guint8 current_state;
+ guint8 pending_state;
+ gboolean state_error; /* flag is set when the element has an error in the last state
+ change. it is cleared when doing another state change. */
+ /*< public >*/ /* with LOCK */
+ /* element manager */
+ GstPipeline *manager;
+ GstBus *bus;
+ GstScheduler *scheduler;
/* allocated clock */
- GstClock *clock;
- GstClockTime base_time;
-
- /* element pads */
- guint16 numpads;
- guint16 numsrcpads;
- guint16 numsinkpads;
- GList *pads;
-
- GMutex *state_mutex;
- GCond *state_cond;
-
- GstElementPreRunFunction pre_run_func;
- GstElementPostRunFunction post_run_func;
- GAsyncQueue *prop_value_queue;
- GMutex *property_mutex;
-
+ GstClock *clock;
+ GstClockTimeDiff base_time; /* NULL/READY: 0 - PAUSED: current time - PLAYING: difference to clock */
+
+ /* element pads, these lists can only be iterated while holding
+ * the LOCK or checking the cookie after each LOCK. */
+ guint16 numpads;
+ GList *pads;
+ guint16 numsrcpads;
+ GList *srcpads;
+ guint16 numsinkpads;
+ GList *sinkpads;
+ guint32 pads_cookie;
+
+ /*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
-struct _GstElementClass {
- GstObjectClass parent_class;
+struct _GstElementClass
+{
+ GstObjectClass parent_class;
+ /*< public >*/
/* the element details */
- GstElementDetails details;
+ GstElementDetails details;
/* factory that the element was created from */
GstElementFactory *elementfactory;
/* templates for our pads */
- GList *padtemplates;
- gint numpadtemplates;
-
+ GList *padtemplates;
+ gint numpadtemplates;
+ guint32 pad_templ_cookie;
+
/* signal callbacks */
void (*state_change) (GstElement *element, GstElementState old, GstElementState state);
void (*new_pad) (GstElement *element, GstPad *pad);
void (*pad_removed) (GstElement *element, GstPad *pad);
- void (*error) (GstElement *element, GstElement *source, gchar *error);
- void (*eos) (GstElement *element);
- void (*found_tag) (GstElement *element, GstElement *source, GstTagList *tag_list);
-
- /* local pointers for get/set */
- void (*set_property) (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
- void (*get_property) (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+ void (*no_more_pads) (GstElement *element);
- /* vtable*/
- gboolean (*release_locks) (GstElement *element);
-
- /* query/convert/events functions */
- const GstEventMask* (*get_event_masks) (GstElement *element);
- gboolean (*send_event) (GstElement *element, GstEvent *event);
- const GstFormat* (*get_formats) (GstElement *element);
- gboolean (*convert) (GstElement *element,
- GstFormat src_format, gint64 src_value,
- GstFormat *dest_format, gint64 *dest_value);
- const GstQueryType* (*get_query_types) (GstElement *element);
- gboolean (*query) (GstElement *element, GstQueryType type,
- GstFormat *format, gint64 *value);
-
- /* change the element state */
- GstElementStateReturn (*change_state) (GstElement *element);
+ /*< protected >*/
+ /* vtable */
/* request/release pads */
GstPad* (*request_new_pad) (GstElement *element, GstPadTemplate *templ, const gchar* name);
void (*release_pad) (GstElement *element, GstPad *pad);
+ /* state changes */
+ GstElementStateReturn (*get_state) (GstElement * element, GstElementState * state,
+ GstElementState * pending, GTimeVal * timeout);
+ GstElementStateReturn (*change_state) (GstElement *element);
+
+ /* manager */
+ void (*set_manager) (GstElement * element, GstPipeline * pipeline);
+ void (*set_bus) (GstElement * element, GstBus * bus);
+ void (*set_scheduler) (GstElement *element, GstScheduler *scheduler);
+
/* set/get clocks */
GstClock* (*get_clock) (GstElement *element);
void (*set_clock) (GstElement *element, GstClock *clock);
GstIndex* (*get_index) (GstElement *element);
void (*set_index) (GstElement *element, GstIndex *index);
+ /* query functions */
+ gboolean (*send_event) (GstElement *element, GstEvent *event);
+
+ const GstQueryType* (*get_query_types) (GstElement *element);
+ gboolean (*query) (GstElement *element, GstQuery *query);
+
+ /*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
+/* element class pad templates */
void gst_element_class_add_pad_template (GstElementClass *klass, GstPadTemplate *templ);
-void gst_element_class_install_std_props (GstElementClass *klass,
- const gchar *first_name, ...);
+GstPadTemplate* gst_element_class_get_pad_template (GstElementClass *element_class, const gchar *name);
+GList* gst_element_class_get_pad_template_list (GstElementClass *element_class);
void gst_element_class_set_details (GstElementClass *klass,
- GstElementDetails *details);
-
-#define gst_element_default_deep_notify gst_object_default_deep_notify
-
-void gst_element_default_error (GObject *object, GstObject *orig, gchar *error);
+ const GstElementDetails *details);
+/* element instance */
GType gst_element_get_type (void);
-void gst_element_set_loop_function (GstElement *element,
- GstElementLoopFunction loop);
+/* basic name and parentage stuff from GstObject */
#define gst_element_get_name(elem) gst_object_get_name(GST_OBJECT(elem))
#define gst_element_set_name(elem,name) gst_object_set_name(GST_OBJECT(elem),name)
#define gst_element_get_parent(elem) gst_object_get_parent(GST_OBJECT(elem))
#define gst_element_set_parent(elem,parent) gst_object_set_parent(GST_OBJECT(elem),parent)
-/* threadsafe versions of their g_object_* counterparts */
-void gst_element_set (GstElement *element, const gchar *first_property_name, ...);
-void gst_element_get (GstElement *element, const gchar *first_property_name, ...);
-void gst_element_set_valist (GstElement *element, const gchar *first_property_name,
- va_list var_args);
-void gst_element_get_valist (GstElement *element, const gchar *first_property_name,
- va_list var_args);
-void gst_element_set_property (GstElement *element, const gchar *property_name,
- const GValue *value);
-void gst_element_get_property (GstElement *element, const gchar *property_name,
- GValue *value);
-
-void gst_element_enable_threadsafe_properties (GstElement *element);
-void gst_element_disable_threadsafe_properties (GstElement *element);
-void gst_element_set_pending_properties (GstElement *element);
-
/* clocking */
gboolean gst_element_requires_clock (GstElement *element);
gboolean gst_element_provides_clock (GstElement *element);
GstClock* gst_element_get_clock (GstElement *element);
void gst_element_set_clock (GstElement *element, GstClock *clock);
-GstClockReturn gst_element_clock_wait (GstElement *element,
- GstClockID id, GstClockTimeDiff *jitter);
-
-/* indexs */
+
+/* indexes */
gboolean gst_element_is_indexable (GstElement *element);
void gst_element_set_index (GstElement *element, GstIndex *index);
GstIndex* gst_element_get_index (GstElement *element);
-
-gboolean gst_element_release_locks (GstElement *element);
-
-void gst_element_yield (GstElement *element);
-gboolean gst_element_interrupt (GstElement *element);
+/* manager and tasks */
+void gst_element_set_manager (GstElement * element, GstPipeline * pipeline);
+GstPipeline * gst_element_get_manager (GstElement * element);
+void gst_element_set_bus (GstElement * element, GstBus * bus);
+GstBus * gst_element_get_bus (GstElement * element);
void gst_element_set_scheduler (GstElement *element, GstScheduler *sched);
GstScheduler* gst_element_get_scheduler (GstElement *element);
-void gst_element_add_pad (GstElement *element, GstPad *pad);
-void gst_element_remove_pad (GstElement *element, GstPad *pad);
+/* pad management */
+gboolean gst_element_add_pad (GstElement *element, GstPad *pad);
+gboolean gst_element_remove_pad (GstElement *element, GstPad *pad);
GstPad * gst_element_add_ghost_pad (GstElement *element, GstPad *pad, const gchar *name);
-void gst_element_remove_ghost_pad (GstElement *element, GstPad *pad);
+void gst_element_no_more_pads (GstElement *element);
GstPad* gst_element_get_pad (GstElement *element, const gchar *name);
GstPad* gst_element_get_static_pad (GstElement *element, const gchar *name);
GstPad* gst_element_get_request_pad (GstElement *element, const gchar *name);
void gst_element_release_request_pad (GstElement *element, GstPad *pad);
-G_CONST_RETURN GList*
- gst_element_get_pad_list (GstElement *element);
-GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad);
-GstPad* gst_element_get_compatible_pad_filtered (GstElement *element, GstPad *pad,
- GstCaps *filtercaps);
+GstIterator * gst_element_iterate_pads (GstElement * element);
-GstPadTemplate* gst_element_class_get_pad_template (GstElementClass *element_class, const gchar *name);
-GList* gst_element_class_get_pad_template_list (GstElementClass *element_class);
-GstPadTemplate* gst_element_get_pad_template (GstElement *element, const gchar *name);
-GList* gst_element_get_pad_template_list (GstElement *element);
-GstPadTemplate* gst_element_get_compatible_pad_template (GstElement *element, GstPadTemplate *compattempl);
-
-gboolean gst_element_link (GstElement *src, GstElement *dest);
-gboolean gst_element_link_many (GstElement *element_1,
- GstElement *element_2, ...);
-gboolean gst_element_link_filtered (GstElement *src, GstElement *dest,
- GstCaps *filtercaps);
-void gst_element_unlink (GstElement *src, GstElement *dest);
-void gst_element_unlink_many (GstElement *element_1,
- GstElement *element_2, ...);
-
-gboolean gst_element_link_pads (GstElement *src, const gchar *srcpadname,
- GstElement *dest, const gchar *destpadname);
-gboolean gst_element_link_pads_filtered (GstElement *src, const gchar *srcpadname,
- GstElement *dest, const gchar *destpadname,
- GstCaps *filtercaps);
-void gst_element_unlink_pads (GstElement *src, const gchar *srcpadname,
- GstElement *dest, const gchar *destpadname);
-
-G_CONST_RETURN GstEventMask*
- gst_element_get_event_masks (GstElement *element);
+/* event/query/format stuff */
gboolean gst_element_send_event (GstElement *element, GstEvent *event);
gboolean gst_element_seek (GstElement *element, GstSeekType seek_type,
guint64 offset);
G_CONST_RETURN GstQueryType*
gst_element_get_query_types (GstElement *element);
-gboolean gst_element_query (GstElement *element, GstQueryType type,
- GstFormat *format, gint64 *value);
-G_CONST_RETURN GstFormat*
- gst_element_get_formats (GstElement *element);
-gboolean gst_element_convert (GstElement *element,
- GstFormat src_format, gint64 src_value,
- GstFormat *dest_format, gint64 *dest_value);
-
-void gst_element_found_tags (GstElement *element, GstTagList *tag_list);
-void gst_element_found_tags_for_pad (GstElement *element, GstPad *pad, GstClockTime timestamp,
- GstTagList *list);
+gboolean gst_element_query (GstElement *element, GstQuery *query);
-void gst_element_set_eos (GstElement *element);
+/* messages */
+gboolean gst_element_post_message (GstElement * element, GstMessage * message);
-void gst_element_error (GstElement *element, const gchar *error, ...);
+/* error handling */
+gchar * _gst_element_error_printf (const gchar *format, ...);
+void gst_element_message_full (GstElement * element, GstMessageType type,
+ GQuark domain, gint code, gchar * text,
+ gchar * debug, const gchar * file,
+ const gchar * function, gint line);
+/* state management */
gboolean gst_element_is_locked_state (GstElement *element);
-void gst_element_set_locked_state (GstElement *element, gboolean locked_state);
+gboolean gst_element_set_locked_state (GstElement *element, gboolean locked_state);
gboolean gst_element_sync_state_with_parent (GstElement *element);
-GstElementState gst_element_get_state (GstElement *element);
+GstElementStateReturn gst_element_get_state (GstElement * element,
+ GstElementState * state,
+ GstElementState * pending,
+ GTimeVal * timeout);
GstElementStateReturn gst_element_set_state (GstElement *element, GstElementState state);
-void gst_element_wait_state_change (GstElement *element);
-
-G_CONST_RETURN gchar* gst_element_state_get_name (GstElementState state);
+void gst_element_abort_state (GstElement * element);
+void gst_element_commit_state (GstElement * element);
+void gst_element_lost_state (GstElement * element);
+/* factory management */
GstElementFactory* gst_element_get_factory (GstElement *element);
-GstBin* gst_element_get_managing_bin (GstElement *element);
-
-
-/*
- *
- * factories stuff
- *
- **/
-
-#define GST_TYPE_ELEMENT_FACTORY (gst_element_factory_get_type())
-#define GST_ELEMENT_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ELEMENT_FACTORY,\
- GstElementFactory))
-#define GST_ELEMENT_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ELEMENT_FACTORY,\
- GstElementFactoryClass))
-#define GST_IS_ELEMENT_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ELEMENT_FACTORY))
-#define GST_IS_ELEMENT_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ELEMENT_FACTORY))
-
-struct _GstElementFactory {
- GstPluginFeature parent;
-
- GType type; /* unique GType of element or 0 if not loaded */
-
- GstElementDetails details;
-
- GList * padtemplates;
- guint numpadtemplates;
-
- /* URI interface stuff */
- guint uri_type;
- gchar ** uri_protocols;
-
- GList * interfaces; /* interfaces this element implements */
-
- gpointer _gst_reserved[GST_PADDING];
-};
-
-struct _GstElementFactoryClass {
- GstPluginFeatureClass parent_class;
-
- gpointer _gst_reserved[GST_PADDING];
-};
-
-GType gst_element_factory_get_type (void);
-
-gboolean gst_element_register (GstPlugin *plugin,
- const gchar *elementname,
- guint rank,
- GType type);
-
-GstElementFactory * gst_element_factory_find (const gchar *name);
-GType gst_element_factory_get_element_type (GstElementFactory *factory);
-G_CONST_RETURN gchar * gst_element_factory_get_longname (GstElementFactory *factory);
-G_CONST_RETURN gchar * gst_element_factory_get_klass (GstElementFactory *factory);
-G_CONST_RETURN gchar * gst_element_factory_get_description (GstElementFactory *factory);
-G_CONST_RETURN gchar * gst_element_factory_get_version (GstElementFactory *factory);
-G_CONST_RETURN gchar * gst_element_factory_get_author (GstElementFactory *factory);
-guint gst_element_factory_get_num_pad_templates (GstElementFactory *factory);
-G_CONST_RETURN GList * gst_element_factory_get_pad_templates (GstElementFactory *factory);
-guint gst_element_factory_get_uri_type (GstElementFactory *factory);
-gchar ** gst_element_factory_get_uri_protocols (GstElementFactory *factory);
-
-GstElement* gst_element_factory_create (GstElementFactory *factory,
- const gchar *name);
-GstElement* gst_element_factory_make (const gchar *factoryname, const gchar *name);
-
-gboolean gst_element_factory_can_src_caps (GstElementFactory *factory,
- GstCaps *caps);
-gboolean gst_element_factory_can_sink_caps (GstElementFactory *factory,
- GstCaps *caps);
-
-void __gst_element_factory_add_pad_template (GstElementFactory *elementfactory,
- GstPadTemplate *templ);
-void __gst_element_factory_add_interface (GstElementFactory *elementfactory,
- const gchar *interfacename);
-
-
G_END_DECLS
-
#endif /* __GST_ELEMENT_H__ */
-
projects / platform / upstream / gstreamer.git / blobdiff