2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wim.taymans@chello.be>
5 * gstpad.h: Header for GstPad object
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
27 #include <gst/gstconfig.h>
29 #include <gst/gstobject.h>
30 #include <gst/gstbuffer.h>
31 #include <gst/gstcaps.h>
32 #include <gst/gstevent.h>
33 #include <gst/gstprobe.h>
34 #include <gst/gstquery.h>
39 extern GType _gst_pad_type;
40 extern GType _gst_real_pad_type;
41 extern GType _gst_ghost_pad_type;
46 #define GST_TYPE_PAD (_gst_pad_type)
47 #define GST_IS_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PAD))
48 #define GST_IS_PAD_FAST(obj) (G_OBJECT_TYPE(obj) == GST_TYPE_REAL_PAD || \
49 G_OBJECT_TYPE(obj) == GST_TYPE_GHOST_PAD)
50 #define GST_IS_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PAD))
51 #define GST_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PAD, GstPad))
52 #define GST_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PAD, GstPadClass))
57 #define GST_TYPE_REAL_PAD (_gst_real_pad_type)
58 #define GST_IS_REAL_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_REAL_PAD))
59 #define GST_IS_REAL_PAD_FAST(obj) (G_OBJECT_TYPE(obj) == GST_TYPE_REAL_PAD)
60 #define GST_IS_REAL_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_REAL_PAD))
61 #define GST_REAL_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_REAL_PAD, GstRealPad))
62 #define GST_REAL_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_REAL_PAD, GstRealPadClass))
67 #define GST_TYPE_GHOST_PAD (_gst_ghost_pad_type)
68 #define GST_IS_GHOST_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GHOST_PAD))
69 #define GST_IS_GHOST_PAD_FAST(obj) (G_OBJECT_TYPE(obj) == GST_TYPE_GHOST_PAD)
70 #define GST_IS_GHOST_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GHOST_PAD))
71 #define GST_GHOST_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GHOST_PAD, GstGhostPad))
72 #define GST_GHOST_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GHOST_PAD, GstGhostPadClass))
75 /*typedef struct _GstPad GstPad; */
76 /*typedef struct _GstPadClass GstPadClass;*/
77 typedef struct _GstRealPad GstRealPad;
78 typedef struct _GstRealPadClass GstRealPadClass;
79 typedef struct _GstGhostPad GstGhostPad;
80 typedef struct _GstGhostPadClass GstGhostPadClass;
81 /*typedef struct _GstPadTemplate GstPadTemplate;*/
82 /*typedef struct _GstPadTemplateClass GstPadTemplateClass;*/
83 typedef struct _GstStaticPadTemplate GstStaticPadTemplate;
84 typedef struct _GstPadLink GstPadLink;
87 GST_PAD_LINK_REFUSED = -1,
88 GST_PAD_LINK_DELAYED = 0,
93 #define GST_PAD_LINK_FAILED(ret) (ret < GST_PAD_LINK_OK)
94 #define GST_PAD_LINK_SUCCESSFUL(ret) (ret >= GST_PAD_LINK_OK)
96 /* convenience functions */
97 #ifdef G_HAVE_ISO_VARARGS
98 #define GST_PAD_QUERY_TYPE_FUNCTION(functionname, ...) GST_QUERY_TYPE_FUNCTION (GstPad *, functionname, __VA_ARGS__);
99 #define GST_PAD_FORMATS_FUNCTION(functionname, ...) GST_FORMATS_FUNCTION (GstPad *, functionname, __VA_ARGS__);
100 #define GST_PAD_EVENT_MASK_FUNCTION(functionname, ...) GST_EVENT_MASK_FUNCTION (GstPad *, functionname, __VA_ARGS__);
101 #elif defined(G_HAVE_GNUC_VARARGS)
102 #define GST_PAD_QUERY_TYPE_FUNCTION(functionname, a...) GST_QUERY_TYPE_FUNCTION (GstPad *, functionname, a);
103 #define GST_PAD_FORMATS_FUNCTION(functionname, a...) GST_FORMATS_FUNCTION (GstPad *, functionname, a);
104 #define GST_PAD_EVENT_MASK_FUNCTION(functionname, a...) GST_EVENT_MASK_FUNCTION (GstPad *, functionname, a);
108 /* this defines the functions used to chain buffers
109 * pad is the sink pad (so the same chain function can be used for N pads)
110 * buf is the buffer being passed */
111 typedef void (*GstPadChainFunction) (GstPad *pad,GstData *data);
112 typedef GstData* (*GstPadGetFunction) (GstPad *pad);
113 typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstEvent *event);
114 typedef gboolean (*GstPadConvertFunction) (GstPad *pad,
115 GstFormat src_format, gint64 src_value,
116 GstFormat *dest_format, gint64 *dest_value);
117 typedef gboolean (*GstPadQueryFunction) (GstPad *pad, GstQueryType type,
118 GstFormat *format, gint64 *value);
119 typedef GList* (*GstPadIntLinkFunction) (GstPad *pad);
120 typedef const GstFormat* (*GstPadFormatsFunction) (GstPad *pad);
121 typedef const GstEventMask* (*GstPadEventMaskFunction) (GstPad *pad);
122 typedef const GstQueryType* (*GstPadQueryTypeFunction) (GstPad *pad);
124 typedef GstPadLinkReturn (*GstPadLinkFunction) (GstPad *pad, const GstCaps *caps);
125 typedef void (*GstPadUnlinkFunction) (GstPad *pad);
126 typedef GstCaps* (*GstPadGetCapsFunction) (GstPad *pad);
127 typedef GstCaps* (*GstPadFixateFunction) (GstPad *pad, const GstCaps *caps, gpointer user_data);
128 typedef GstBuffer* (*GstPadBufferAllocFunction) (GstPad *pad, guint64 offset, guint size);
130 typedef gboolean (*GstPadDispatcherFunction) (GstPad *pad, gpointer data);
139 GST_PAD_DISABLED = GST_OBJECT_FLAG_LAST,
142 GST_PAD_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
148 gpointer element_private;
150 GstPadTemplate *padtemplate; /* the template for this pad */
152 gpointer _gst_reserved[GST_PADDING];
155 struct _GstPadClass {
156 GstObjectClass parent_class;
158 gpointer _gst_reserved[GST_PADDING];
164 /* the pad capabilities */
166 GstPadFixateFunction appfixatefunc;
168 GstPadGetCapsFunction getcapsfunc;
169 GstPadFixateFunction fixatefunc;
171 GstPadDirection direction;
173 GstPadLinkFunction linkfunc;
174 GstPadUnlinkFunction unlinkfunc;
177 gpointer sched_private;
179 /* data transport functions */
180 GstPadChainFunction chainfunc;
181 GstPadChainFunction chainhandler;
182 GstPadGetFunction getfunc;
183 GstPadGetFunction gethandler;
184 GstPadEventFunction eventfunc;
185 GstPadEventFunction eventhandler;
186 GstPadEventMaskFunction eventmaskfunc;
190 /* query/convert/formats functions */
191 GstPadConvertFunction convertfunc;
192 GstPadQueryFunction queryfunc;
193 GstPadFormatsFunction formatsfunc;
194 GstPadQueryTypeFunction querytypefunc;
195 GstPadIntLinkFunction intlinkfunc;
197 GstPadBufferAllocFunction bufferallocfunc;
199 GstProbeDispatcher probedisp;
203 gpointer _gst_reserved[GST_PADDING - 1];
206 struct _GstRealPadClass {
207 GstPadClass parent_class;
209 /* signal callbacks */
210 void (*caps_nego_failed) (GstPad *pad, GstCaps *caps);
212 void (*linked) (GstPad *pad, GstPad *peer);
213 void (*unlinked) (GstPad *pad, GstPad *peer);
215 gpointer _gst_reserved[GST_PADDING];
218 struct _GstGhostPad {
223 gpointer _gst_reserved[GST_PADDING];
226 struct _GstGhostPadClass {
227 GstPadClass parent_class;
229 gpointer _gst_reserved[GST_PADDING];
233 /***** helper macros *****/
235 #define GST_PAD_NAME(pad) (GST_OBJECT_NAME(pad))
236 #define GST_PAD_PARENT(pad) ((GstElement *)(GST_OBJECT_PARENT(pad)))
237 #define GST_PAD_ELEMENT_PRIVATE(pad) (((GstPad *)(pad))->element_private)
238 #define GST_PAD_PAD_TEMPLATE(pad) (((GstPad *)(pad))->padtemplate)
241 #define GST_RPAD_DIRECTION(pad) (((GstRealPad *)(pad))->direction)
242 #define GST_RPAD_CAPS(pad) (((GstRealPad *)(pad))->caps)
243 #define GST_RPAD_APPFILTER(pad) (((GstRealPad *)(pad))->appfilter)
244 #define GST_RPAD_PEER(pad) (((GstRealPad *)(pad))->peer)
245 #define GST_RPAD_CHAINFUNC(pad) (((GstRealPad *)(pad))->chainfunc)
246 #define GST_RPAD_CHAINHANDLER(pad) (((GstRealPad *)(pad))->chainhandler)
247 #define GST_RPAD_GETFUNC(pad) (((GstRealPad *)(pad))->getfunc)
248 #define GST_RPAD_GETHANDLER(pad) (((GstRealPad *)(pad))->gethandler)
249 #define GST_RPAD_EVENTFUNC(pad) (((GstRealPad *)(pad))->eventfunc)
250 #define GST_RPAD_EVENTHANDLER(pad) (((GstRealPad *)(pad))->eventhandler)
251 #define GST_RPAD_CONVERTFUNC(pad) (((GstRealPad *)(pad))->convertfunc)
252 #define GST_RPAD_QUERYFUNC(pad) (((GstRealPad *)(pad))->queryfunc)
253 #define GST_RPAD_INTLINKFUNC(pad) (((GstRealPad *)(pad))->intlinkfunc)
254 #define GST_RPAD_FORMATSFUNC(pad) (((GstRealPad *)(pad))->formatsfunc)
255 #define GST_RPAD_QUERYTYPEFUNC(pad) (((GstRealPad *)(pad))->querytypefunc)
256 #define GST_RPAD_EVENTMASKFUNC(pad) (((GstRealPad *)(pad))->eventmaskfunc)
258 #define GST_RPAD_LINKFUNC(pad) (((GstRealPad *)(pad))->linkfunc)
259 #define GST_RPAD_UNLINKFUNC(pad) (((GstRealPad *)(pad))->unlinkfunc)
260 #define GST_RPAD_GETCAPSFUNC(pad) (((GstRealPad *)(pad))->getcapsfunc)
261 #define GST_RPAD_FIXATEFUNC(pad) (((GstRealPad *)(pad))->fixatefunc)
262 #define GST_RPAD_BUFFERALLOCFUNC(pad) (((GstRealPad *)(pad))->bufferallocfunc)
263 #define GST_RPAD_LINK(pad) (((GstRealPad *)(pad))->link)
266 #define GST_GPAD_REALPAD(pad) (((GstGhostPad *)(pad))->realpad)
269 #define GST_PAD_REALIZE(pad) (GST_IS_REAL_PAD(pad) ? ((GstRealPad *)(pad)) : GST_GPAD_REALPAD(pad))
270 #define GST_PAD_DIRECTION(pad) GST_RPAD_DIRECTION(GST_PAD_REALIZE(pad))
271 #define GST_PAD_CAPS(pad) (gst_pad_get_negotiated_caps(GST_PAD (pad)))
272 #define GST_PAD_PEER(pad) GST_PAD(GST_RPAD_PEER(GST_PAD_REALIZE(pad)))
274 /* Some check functions (unused?) */
275 #define GST_PAD_IS_LINKED(pad) (GST_PAD_PEER(pad) != NULL)
276 #define GST_PAD_IS_ACTIVE(pad) (!GST_FLAG_IS_SET(GST_PAD_REALIZE(pad), GST_PAD_DISABLED))
277 #define GST_PAD_IS_USABLE(pad) (GST_PAD_IS_LINKED (pad) && \
278 GST_PAD_IS_ACTIVE(pad) && GST_PAD_IS_ACTIVE(GST_PAD_PEER (pad)))
279 #define GST_PAD_CAN_PULL(pad) (GST_IS_REAL_PAD(pad) && GST_REAL_PAD(pad)->gethandler != NULL)
280 #define GST_PAD_IS_SRC(pad) (GST_PAD_DIRECTION(pad) == GST_PAD_SRC)
281 #define GST_PAD_IS_SINK(pad) (GST_PAD_DIRECTION(pad) == GST_PAD_SINK)
283 /***** PadTemplate *****/
284 #define GST_TYPE_PAD_TEMPLATE (gst_pad_template_get_type ())
285 #define GST_PAD_TEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PAD_TEMPLATE,GstPadTemplate))
286 #define GST_PAD_TEMPLATE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PAD_TEMPLATE,GstPadTemplateClass))
287 #define GST_IS_PAD_TEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PAD_TEMPLATE))
288 #define GST_IS_PAD_TEMPLATE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PAD_TEMPLATE))
296 #define GST_PAD_TEMPLATE_NAME_TEMPLATE(templ) (((GstPadTemplate *)(templ))->name_template)
297 #define GST_PAD_TEMPLATE_DIRECTION(templ) (((GstPadTemplate *)(templ))->direction)
298 #define GST_PAD_TEMPLATE_PRESENCE(templ) (((GstPadTemplate *)(templ))->presence)
299 #define GST_PAD_TEMPLATE_CAPS(templ) (((GstPadTemplate *)(templ))->caps)
302 GST_PAD_TEMPLATE_FIXED = GST_OBJECT_FLAG_LAST,
304 GST_PAD_TEMPLATE_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
305 } GstPadTemplateFlags;
307 #define GST_PAD_TEMPLATE_IS_FIXED(templ) (GST_FLAG_IS_SET(templ, GST_PAD_TEMPLATE_FIXED))
309 struct _GstPadTemplate {
312 gchar *name_template;
313 GstPadDirection direction;
314 GstPadPresence presence;
317 gpointer _gst_reserved[GST_PADDING];
320 struct _GstPadTemplateClass {
321 GstObjectClass parent_class;
323 /* signal callbacks */
324 void (*pad_created) (GstPadTemplate *templ, GstPad *pad);
326 gpointer _gst_reserved[GST_PADDING];
329 struct _GstStaticPadTemplate {
330 gchar *name_template;
331 GstPadDirection direction;
332 GstPadPresence presence;
333 GstStaticCaps static_caps;
336 #define GST_STATIC_PAD_TEMPLATE(padname, dir, pres, caps) \
338 /* name_template */ padname, \
339 /* direction */ dir, \
340 /* presence */ pres, \
345 GType gst_pad_get_type (void);
346 GType gst_real_pad_get_type (void);
347 GType gst_ghost_pad_get_type (void);
350 GstPad* gst_pad_new (const gchar *name, GstPadDirection direction);
351 GstPad* gst_pad_new_from_template (GstPadTemplate *templ, const gchar *name);
352 GstPad* gst_pad_custom_new (GType type, const gchar *name, GstPadDirection direction);
353 GstPad* gst_pad_custom_new_from_template (GType type, GstPadTemplate *templ, const gchar *name);
355 void gst_pad_set_name (GstPad *pad, const gchar *name);
356 G_CONST_RETURN gchar* gst_pad_get_name (GstPad *pad);
358 GstPadDirection gst_pad_get_direction (GstPad *pad);
360 void gst_pad_set_active (GstPad *pad, gboolean active);
361 gboolean gst_pad_is_active (GstPad *pad);
363 void gst_pad_set_element_private (GstPad *pad, gpointer priv);
364 gpointer gst_pad_get_element_private (GstPad *pad);
366 void gst_pad_set_parent (GstPad *pad, GstElement *parent);
367 GstElement* gst_pad_get_parent (GstPad *pad);
368 GstElement* gst_pad_get_real_parent (GstPad *pad);
370 GstScheduler* gst_pad_get_scheduler (GstPad *pad);
372 void gst_pad_add_ghost_pad (GstPad *pad, GstPad *ghostpad);
373 void gst_pad_remove_ghost_pad (GstPad *pad, GstPad *ghostpad);
374 GList* gst_pad_get_ghost_pad_list (GstPad *pad);
376 GstPadTemplate* gst_pad_get_pad_template (GstPad *pad);
378 void gst_pad_set_bufferalloc_function (GstPad *pad, GstPadBufferAllocFunction bufferalloc);
379 GstBuffer* gst_pad_alloc_buffer (GstPad *pad, guint64 offset, gint size);
381 /* data passing setup functions */
382 void gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain);
383 void gst_pad_set_get_function (GstPad *pad, GstPadGetFunction get);
384 void gst_pad_set_event_function (GstPad *pad, GstPadEventFunction event);
385 void gst_pad_set_event_mask_function (GstPad *pad, GstPadEventMaskFunction mask_func);
386 G_CONST_RETURN GstEventMask*
387 gst_pad_get_event_masks (GstPad *pad);
388 G_CONST_RETURN GstEventMask*
389 gst_pad_get_event_masks_default (GstPad *pad);
392 void gst_pad_set_link_function (GstPad *pad, GstPadLinkFunction link);
393 gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad);
394 gboolean gst_pad_can_link_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
395 void gst_pad_set_unlink_function (GstPad *pad, GstPadUnlinkFunction unlink);
397 gboolean gst_pad_link (GstPad *srcpad, GstPad *sinkpad);
398 gboolean gst_pad_link_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
399 void gst_pad_unlink (GstPad *srcpad, GstPad *sinkpad);
401 GstPad* gst_pad_get_peer (GstPad *pad);
403 /* capsnego functions */
404 G_CONST_RETURN GstCaps* gst_pad_get_negotiated_caps (GstPad *pad);
405 GstCaps* gst_pad_get_caps (GstPad *pad);
406 G_CONST_RETURN GstCaps* gst_pad_get_pad_template_caps (GstPad *pad);
407 GstPadLinkReturn gst_pad_try_set_caps (GstPad *pad, const GstCaps *caps);
408 gboolean gst_pad_check_compatibility (GstPad *srcpad, GstPad *sinkpad);
410 void gst_pad_set_getcaps_function (GstPad *pad, GstPadGetCapsFunction getcaps);
411 void gst_pad_set_fixate_function (GstPad *pad, GstPadFixateFunction fixate);
412 GstCaps * gst_pad_proxy_getcaps (GstPad *pad);
413 GstPadLinkReturn gst_pad_proxy_link (GstPad *pad, const GstCaps *caps);
414 gboolean gst_pad_relink_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
415 #ifndef GST_DISABLE_DEPRECATED
416 gboolean gst_pad_perform_negotiate (GstPad *srcpad, GstPad *sinkpad);
418 GstPadLinkReturn gst_pad_renegotiate (GstPad *pad);
419 void gst_pad_unnegotiate (GstPad *pad);
420 gboolean gst_pad_try_relink_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
421 GstCaps* gst_pad_get_allowed_caps (GstPad *pad);
422 void gst_pad_caps_change_notify (GstPad *pad);
424 gboolean gst_pad_recover_caps_error (GstPad *pad, const GstCaps *allowed);
426 /* data passing functions */
427 void gst_pad_push (GstPad *pad, GstData *data);
428 GstData* gst_pad_pull (GstPad *pad);
429 gboolean gst_pad_send_event (GstPad *pad, GstEvent *event);
430 gboolean gst_pad_event_default (GstPad *pad, GstEvent *event);
431 GstPad* gst_pad_selectv (GList *padlist);
432 GstPad* gst_pad_select (GstPad *pad, ...);
433 GstPad* gst_pad_select_valist (GstPad *pad, va_list varargs);
436 /* convert/query/format functions */
437 void gst_pad_set_formats_function (GstPad *pad,
438 GstPadFormatsFunction formats);
439 G_CONST_RETURN GstFormat*
440 gst_pad_get_formats (GstPad *pad);
441 G_CONST_RETURN GstFormat*
442 gst_pad_get_formats_default (GstPad *pad);
444 void gst_pad_set_convert_function (GstPad *pad, GstPadConvertFunction convert);
445 gboolean gst_pad_convert (GstPad *pad,
446 GstFormat src_format, gint64 src_value,
447 GstFormat *dest_format, gint64 *dest_value);
448 gboolean gst_pad_convert_default (GstPad *pad,
449 GstFormat src_format, gint64 src_value,
450 GstFormat *dest_format, gint64 *dest_value);
452 void gst_pad_set_query_function (GstPad *pad, GstPadQueryFunction query);
453 void gst_pad_set_query_type_function (GstPad *pad, GstPadQueryTypeFunction type_func);
454 G_CONST_RETURN GstQueryType*
455 gst_pad_get_query_types (GstPad *pad);
456 G_CONST_RETURN GstQueryType*
457 gst_pad_get_query_types_default (GstPad *pad);
458 gboolean gst_pad_query (GstPad *pad, GstQueryType type,
459 GstFormat *format, gint64 *value);
460 gboolean gst_pad_query_default (GstPad *pad, GstQueryType type,
461 GstFormat *format, gint64 *value);
463 void gst_pad_set_internal_link_function (GstPad *pad, GstPadIntLinkFunction intlink);
464 GList* gst_pad_get_internal_links (GstPad *pad);
465 GList* gst_pad_get_internal_links_default (GstPad *pad);
467 /* misc helper functions */
468 gboolean gst_pad_dispatcher (GstPad *pad, GstPadDispatcherFunction dispatch,
471 #define gst_pad_add_probe(pad, probe) \
472 (gst_probe_dispatcher_add_probe (&(GST_REAL_PAD (pad)->probedisp), probe))
473 #define gst_pad_remove_probe(pad, probe) \
474 (gst_probe_dispatcher_remove_probe (&(GST_REAL_PAD (pad)->probedisp), probe))
476 #ifndef GST_DISABLE_LOADSAVE
477 void gst_pad_load_and_link (xmlNodePtr self, GstObject *parent);
482 GstPad* gst_ghost_pad_new (const gchar *name, GstPad *pad);
485 /* templates and factories */
486 GType gst_pad_template_get_type (void);
488 GstPadTemplate* gst_pad_template_new (const gchar *name_template,
489 GstPadDirection direction, GstPadPresence presence,
492 GstPadTemplate * gst_static_pad_template_get (GstStaticPadTemplate *templ);
493 const GstCaps* gst_pad_template_get_caps (GstPadTemplate *templ);
494 const GstCaps* gst_pad_template_get_caps_by_name (GstPadTemplate *templ, const gchar *name);
496 #ifndef GST_DISABLE_LOADSAVE
497 xmlNodePtr gst_ghost_pad_save_thyself (GstPad *pad,
504 #endif /* __GST_PAD_H__ */