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 #ifndef GST_DISABLE_DEPRECATED
98 #ifdef G_HAVE_ISO_VARARGS
99 #define GST_PAD_QUERY_TYPE_FUNCTION(functionname, ...) GST_QUERY_TYPE_FUNCTION (GstPad *, functionname, __VA_ARGS__);
100 #define GST_PAD_FORMATS_FUNCTION(functionname, ...) GST_FORMATS_FUNCTION (GstPad *, functionname, __VA_ARGS__);
101 #define GST_PAD_EVENT_MASK_FUNCTION(functionname, ...) GST_EVENT_MASK_FUNCTION (GstPad *, functionname, __VA_ARGS__);
102 #elif defined(G_HAVE_GNUC_VARARGS)
103 #define GST_PAD_QUERY_TYPE_FUNCTION(functionname, a...) GST_QUERY_TYPE_FUNCTION (GstPad *, functionname, a);
104 #define GST_PAD_FORMATS_FUNCTION(functionname, a...) GST_FORMATS_FUNCTION (GstPad *, functionname, a);
105 #define GST_PAD_EVENT_MASK_FUNCTION(functionname, a...) GST_EVENT_MASK_FUNCTION (GstPad *, functionname, a);
110 /* this defines the functions used to chain buffers
111 * pad is the sink pad (so the same chain function can be used for N pads)
112 * buf is the buffer being passed */
113 typedef void (*GstPadChainFunction) (GstPad *pad,GstData *data);
114 typedef GstData* (*GstPadGetFunction) (GstPad *pad);
115 typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstEvent *event);
116 typedef gboolean (*GstPadConvertFunction) (GstPad *pad,
117 GstFormat src_format, gint64 src_value,
118 GstFormat *dest_format, gint64 *dest_value);
119 typedef gboolean (*GstPadQueryFunction) (GstPad *pad, GstQueryType type,
120 GstFormat *format, gint64 *value);
121 typedef GList* (*GstPadIntLinkFunction) (GstPad *pad);
122 typedef const GstFormat* (*GstPadFormatsFunction) (GstPad *pad);
123 typedef const GstEventMask* (*GstPadEventMaskFunction) (GstPad *pad);
124 typedef const GstQueryType* (*GstPadQueryTypeFunction) (GstPad *pad);
126 typedef GstPadLinkReturn (*GstPadLinkFunction) (GstPad *pad, const GstCaps *caps);
127 typedef void (*GstPadUnlinkFunction) (GstPad *pad);
128 typedef GstCaps* (*GstPadGetCapsFunction) (GstPad *pad);
129 typedef GstCaps* (*GstPadFixateFunction) (GstPad *pad, const GstCaps *caps);
130 typedef GstBuffer* (*GstPadBufferAllocFunction) (GstPad *pad, guint64 offset, guint size);
132 typedef gboolean (*GstPadDispatcherFunction) (GstPad *pad, gpointer data);
141 GST_PAD_DISABLED = GST_OBJECT_FLAG_LAST,
144 GST_PAD_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
150 gpointer element_private;
152 GstPadTemplate *padtemplate; /* the template for this pad */
154 gpointer _gst_reserved[GST_PADDING];
157 struct _GstPadClass {
158 GstObjectClass parent_class;
160 gpointer _gst_reserved[GST_PADDING];
166 /* the pad capabilities */
168 GstPadFixateFunction appfixatefunc;
170 GstPadGetCapsFunction getcapsfunc;
171 GstPadFixateFunction fixatefunc;
173 GstPadDirection direction;
175 GstPadLinkFunction linkfunc;
176 GstPadUnlinkFunction unlinkfunc;
179 gpointer sched_private;
181 /* data transport functions */
182 GstPadChainFunction chainfunc;
183 GstPadChainFunction chainhandler;
184 GstPadGetFunction getfunc;
185 GstPadGetFunction gethandler;
186 GstPadEventFunction eventfunc;
187 GstPadEventFunction eventhandler;
188 GstPadEventMaskFunction eventmaskfunc;
192 /* query/convert/formats functions */
193 GstPadConvertFunction convertfunc;
194 GstPadQueryFunction queryfunc;
195 GstPadFormatsFunction formatsfunc;
196 GstPadQueryTypeFunction querytypefunc;
197 GstPadIntLinkFunction intlinkfunc;
199 GstPadBufferAllocFunction bufferallocfunc;
201 GstProbeDispatcher probedisp;
204 GstCaps *explicit_caps;
206 gpointer _gst_reserved[GST_PADDING];
209 struct _GstRealPadClass {
210 GstPadClass parent_class;
212 /* signal callbacks */
213 void (*caps_nego_failed) (GstPad *pad, GstCaps *caps);
215 void (*linked) (GstPad *pad, GstPad *peer);
216 void (*unlinked) (GstPad *pad, GstPad *peer);
217 GstPadFixateFunction appfixatefunc;
219 gpointer _gst_reserved[GST_PADDING];
222 struct _GstGhostPad {
227 gpointer _gst_reserved[GST_PADDING];
230 struct _GstGhostPadClass {
231 GstPadClass parent_class;
233 gpointer _gst_reserved[GST_PADDING];
237 /***** helper macros *****/
239 #define GST_PAD_NAME(pad) (GST_OBJECT_NAME(pad))
240 #define GST_PAD_PARENT(pad) ((GstElement *)(GST_OBJECT_PARENT(pad)))
241 #define GST_PAD_ELEMENT_PRIVATE(pad) (((GstPad *)(pad))->element_private)
242 #define GST_PAD_PAD_TEMPLATE(pad) (((GstPad *)(pad))->padtemplate)
245 #define GST_RPAD_DIRECTION(pad) (((GstRealPad *)(pad))->direction)
246 #define GST_RPAD_CAPS(pad) (((GstRealPad *)(pad))->caps)
247 #define GST_RPAD_APPFILTER(pad) (((GstRealPad *)(pad))->appfilter)
248 #define GST_RPAD_PEER(pad) (((GstRealPad *)(pad))->peer)
249 #define GST_RPAD_CHAINFUNC(pad) (((GstRealPad *)(pad))->chainfunc)
250 #define GST_RPAD_CHAINHANDLER(pad) (((GstRealPad *)(pad))->chainhandler)
251 #define GST_RPAD_GETFUNC(pad) (((GstRealPad *)(pad))->getfunc)
252 #define GST_RPAD_GETHANDLER(pad) (((GstRealPad *)(pad))->gethandler)
253 #define GST_RPAD_EVENTFUNC(pad) (((GstRealPad *)(pad))->eventfunc)
254 #define GST_RPAD_EVENTHANDLER(pad) (((GstRealPad *)(pad))->eventhandler)
255 #define GST_RPAD_CONVERTFUNC(pad) (((GstRealPad *)(pad))->convertfunc)
256 #define GST_RPAD_QUERYFUNC(pad) (((GstRealPad *)(pad))->queryfunc)
257 #define GST_RPAD_INTLINKFUNC(pad) (((GstRealPad *)(pad))->intlinkfunc)
258 #define GST_RPAD_FORMATSFUNC(pad) (((GstRealPad *)(pad))->formatsfunc)
259 #define GST_RPAD_QUERYTYPEFUNC(pad) (((GstRealPad *)(pad))->querytypefunc)
260 #define GST_RPAD_EVENTMASKFUNC(pad) (((GstRealPad *)(pad))->eventmaskfunc)
262 #define GST_RPAD_LINKFUNC(pad) (((GstRealPad *)(pad))->linkfunc)
263 #define GST_RPAD_UNLINKFUNC(pad) (((GstRealPad *)(pad))->unlinkfunc)
264 #define GST_RPAD_GETCAPSFUNC(pad) (((GstRealPad *)(pad))->getcapsfunc)
265 #define GST_RPAD_FIXATEFUNC(pad) (((GstRealPad *)(pad))->fixatefunc)
266 #define GST_RPAD_BUFFERALLOCFUNC(pad) (((GstRealPad *)(pad))->bufferallocfunc)
267 #define GST_RPAD_LINK(pad) (((GstRealPad *)(pad))->link)
268 #define GST_RPAD_EXPLICIT_CAPS(pad) (((GstRealPad *)(pad))->explicit_caps)
271 #define GST_GPAD_REALPAD(pad) (((GstGhostPad *)(pad))->realpad)
274 #define GST_PAD_REALIZE(pad) (GST_IS_REAL_PAD(pad) ? ((GstRealPad *)(pad)) : GST_GPAD_REALPAD(pad))
275 #define GST_PAD_DIRECTION(pad) GST_RPAD_DIRECTION(GST_PAD_REALIZE(pad))
276 #define GST_PAD_CAPS(pad) (gst_pad_get_negotiated_caps(GST_PAD (pad)))
277 #define GST_PAD_PEER(pad) GST_PAD(GST_RPAD_PEER(GST_PAD_REALIZE(pad)))
279 /* Some check functions (unused?) */
280 #define GST_PAD_IS_LINKED(pad) (GST_PAD_PEER(pad) != NULL)
281 #define GST_PAD_IS_ACTIVE(pad) (!GST_FLAG_IS_SET(GST_PAD_REALIZE(pad), GST_PAD_DISABLED))
282 #define GST_PAD_IS_USABLE(pad) (GST_PAD_IS_LINKED (pad) && \
283 GST_PAD_IS_ACTIVE(pad) && GST_PAD_IS_ACTIVE(GST_PAD_PEER (pad)))
284 #define GST_PAD_CAN_PULL(pad) (GST_IS_REAL_PAD(pad) && GST_REAL_PAD(pad)->gethandler != NULL)
285 #define GST_PAD_IS_SRC(pad) (GST_PAD_DIRECTION(pad) == GST_PAD_SRC)
286 #define GST_PAD_IS_SINK(pad) (GST_PAD_DIRECTION(pad) == GST_PAD_SINK)
288 /***** PadTemplate *****/
289 #define GST_TYPE_PAD_TEMPLATE (gst_pad_template_get_type ())
290 #define GST_PAD_TEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PAD_TEMPLATE,GstPadTemplate))
291 #define GST_PAD_TEMPLATE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PAD_TEMPLATE,GstPadTemplateClass))
292 #define GST_IS_PAD_TEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PAD_TEMPLATE))
293 #define GST_IS_PAD_TEMPLATE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PAD_TEMPLATE))
301 #define GST_PAD_TEMPLATE_NAME_TEMPLATE(templ) (((GstPadTemplate *)(templ))->name_template)
302 #define GST_PAD_TEMPLATE_DIRECTION(templ) (((GstPadTemplate *)(templ))->direction)
303 #define GST_PAD_TEMPLATE_PRESENCE(templ) (((GstPadTemplate *)(templ))->presence)
304 #define GST_PAD_TEMPLATE_CAPS(templ) (((GstPadTemplate *)(templ))->caps)
307 GST_PAD_TEMPLATE_FIXED = GST_OBJECT_FLAG_LAST,
309 GST_PAD_TEMPLATE_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
310 } GstPadTemplateFlags;
312 #define GST_PAD_TEMPLATE_IS_FIXED(templ) (GST_FLAG_IS_SET(templ, GST_PAD_TEMPLATE_FIXED))
314 struct _GstPadTemplate {
317 gchar *name_template;
318 GstPadDirection direction;
319 GstPadPresence presence;
322 gpointer _gst_reserved[GST_PADDING];
325 struct _GstPadTemplateClass {
326 GstObjectClass parent_class;
328 /* signal callbacks */
329 void (*pad_created) (GstPadTemplate *templ, GstPad *pad);
331 gpointer _gst_reserved[GST_PADDING];
334 struct _GstStaticPadTemplate {
335 gchar *name_template;
336 GstPadDirection direction;
337 GstPadPresence presence;
338 GstStaticCaps static_caps;
341 #define GST_STATIC_PAD_TEMPLATE(padname, dir, pres, caps) \
343 /* name_template */ padname, \
344 /* direction */ dir, \
345 /* presence */ pres, \
350 GType gst_pad_get_type (void);
351 GType gst_real_pad_get_type (void);
352 GType gst_ghost_pad_get_type (void);
355 GstPad* gst_pad_new (const gchar *name, GstPadDirection direction);
356 GstPad* gst_pad_new_from_template (GstPadTemplate *templ, const gchar *name);
357 GstPad* gst_pad_custom_new (GType type, const gchar *name, GstPadDirection direction);
358 GstPad* gst_pad_custom_new_from_template (GType type, GstPadTemplate *templ, const gchar *name);
360 void gst_pad_set_name (GstPad *pad, const gchar *name);
361 G_CONST_RETURN gchar* gst_pad_get_name (GstPad *pad);
363 GstPadDirection gst_pad_get_direction (GstPad *pad);
365 void gst_pad_set_active (GstPad *pad, gboolean active);
366 gboolean gst_pad_is_active (GstPad *pad);
368 void gst_pad_set_element_private (GstPad *pad, gpointer priv);
369 gpointer gst_pad_get_element_private (GstPad *pad);
371 void gst_pad_set_parent (GstPad *pad, GstElement *parent);
372 GstElement* gst_pad_get_parent (GstPad *pad);
373 GstElement* gst_pad_get_real_parent (GstPad *pad);
375 GstScheduler* gst_pad_get_scheduler (GstPad *pad);
377 void gst_pad_add_ghost_pad (GstPad *pad, GstPad *ghostpad);
378 void gst_pad_remove_ghost_pad (GstPad *pad, GstPad *ghostpad);
379 GList* gst_pad_get_ghost_pad_list (GstPad *pad);
381 GstPadTemplate* gst_pad_get_pad_template (GstPad *pad);
383 void gst_pad_set_bufferalloc_function (GstPad *pad, GstPadBufferAllocFunction bufferalloc);
384 GstBuffer* gst_pad_alloc_buffer (GstPad *pad, guint64 offset, gint size);
386 /* data passing setup functions */
387 void gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain);
388 void gst_pad_set_get_function (GstPad *pad, GstPadGetFunction get);
389 void gst_pad_set_event_function (GstPad *pad, GstPadEventFunction event);
390 void gst_pad_set_event_mask_function (GstPad *pad, GstPadEventMaskFunction mask_func);
391 G_CONST_RETURN GstEventMask*
392 gst_pad_get_event_masks (GstPad *pad);
393 G_CONST_RETURN GstEventMask*
394 gst_pad_get_event_masks_default (GstPad *pad);
397 void gst_pad_set_link_function (GstPad *pad, GstPadLinkFunction link);
398 gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad);
399 gboolean gst_pad_can_link_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
400 void gst_pad_set_unlink_function (GstPad *pad, GstPadUnlinkFunction unlink);
402 gboolean gst_pad_link (GstPad *srcpad, GstPad *sinkpad);
403 gboolean gst_pad_link_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
404 void gst_pad_unlink (GstPad *srcpad, GstPad *sinkpad);
405 gboolean gst_pad_is_linked (GstPad *pad);
407 GstPad* gst_pad_get_peer (GstPad *pad);
409 /* capsnego functions */
410 G_CONST_RETURN GstCaps* gst_pad_get_negotiated_caps (GstPad *pad);
411 gboolean gst_pad_is_negotiated (GstPad *pad);
412 GstCaps* gst_pad_get_caps (GstPad *pad);
413 G_CONST_RETURN GstCaps* gst_pad_get_pad_template_caps (GstPad *pad);
414 GstPadLinkReturn gst_pad_try_set_caps (GstPad *pad, const GstCaps *caps);
415 GstPadLinkReturn gst_pad_try_set_caps_nonfixed (GstPad *pad, const GstCaps *caps);
416 gboolean gst_pad_check_compatibility (GstPad *srcpad, GstPad *sinkpad);
418 void gst_pad_set_getcaps_function (GstPad *pad, GstPadGetCapsFunction getcaps);
419 void gst_pad_set_fixate_function (GstPad *pad, GstPadFixateFunction fixate);
420 GstCaps * gst_pad_proxy_getcaps (GstPad *pad);
421 GstPadLinkReturn gst_pad_proxy_pad_link (GstPad *pad, const GstCaps *caps);
422 GstCaps * gst_pad_proxy_fixate (GstPad *pad, const GstCaps *caps);
423 #ifndef GST_DISABLE_DEPRECATED
424 GstPadLinkReturn gst_pad_proxy_link (GstPad *pad, const GstCaps *caps);
426 gboolean gst_pad_set_explicit_caps (GstPad *pad, const GstCaps *caps);
427 void gst_pad_use_explicit_caps (GstPad *pad);
428 gboolean gst_pad_relink_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
429 #ifndef GST_DISABLE_DEPRECATED
430 gboolean gst_pad_perform_negotiate (GstPad *srcpad, GstPad *sinkpad);
432 GstPadLinkReturn gst_pad_renegotiate (GstPad *pad);
433 void gst_pad_unnegotiate (GstPad *pad);
434 gboolean gst_pad_try_relink_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
435 GstCaps* gst_pad_get_allowed_caps (GstPad *pad);
436 void gst_pad_caps_change_notify (GstPad *pad);
438 gboolean gst_pad_recover_caps_error (GstPad *pad, const GstCaps *allowed);
440 /* data passing functions */
441 void gst_pad_push (GstPad *pad, GstData *data);
442 GstData* gst_pad_pull (GstPad *pad);
443 gboolean gst_pad_send_event (GstPad *pad, GstEvent *event);
444 gboolean gst_pad_event_default (GstPad *pad, GstEvent *event);
445 GstPad* gst_pad_selectv (GList *padlist);
446 GstPad* gst_pad_select (GstPad *pad, ...);
447 GstPad* gst_pad_select_valist (GstPad *pad, va_list varargs);
450 /* convert/query/format functions */
451 void gst_pad_set_formats_function (GstPad *pad,
452 GstPadFormatsFunction formats);
453 G_CONST_RETURN GstFormat*
454 gst_pad_get_formats (GstPad *pad);
455 G_CONST_RETURN GstFormat*
456 gst_pad_get_formats_default (GstPad *pad);
458 void gst_pad_set_convert_function (GstPad *pad, GstPadConvertFunction convert);
459 gboolean gst_pad_convert (GstPad *pad,
460 GstFormat src_format, gint64 src_value,
461 GstFormat *dest_format, gint64 *dest_value);
462 gboolean gst_pad_convert_default (GstPad *pad,
463 GstFormat src_format, gint64 src_value,
464 GstFormat *dest_format, gint64 *dest_value);
466 void gst_pad_set_query_function (GstPad *pad, GstPadQueryFunction query);
467 void gst_pad_set_query_type_function (GstPad *pad, GstPadQueryTypeFunction type_func);
468 G_CONST_RETURN GstQueryType*
469 gst_pad_get_query_types (GstPad *pad);
470 G_CONST_RETURN GstQueryType*
471 gst_pad_get_query_types_default (GstPad *pad);
472 gboolean gst_pad_query (GstPad *pad, GstQueryType type,
473 GstFormat *format, gint64 *value);
474 gboolean gst_pad_query_default (GstPad *pad, GstQueryType type,
475 GstFormat *format, gint64 *value);
477 void gst_pad_set_internal_link_function (GstPad *pad, GstPadIntLinkFunction intlink);
478 GList* gst_pad_get_internal_links (GstPad *pad);
479 GList* gst_pad_get_internal_links_default (GstPad *pad);
481 /* misc helper functions */
482 gboolean gst_pad_dispatcher (GstPad *pad, GstPadDispatcherFunction dispatch,
485 #define gst_pad_add_probe(pad, probe) \
486 (gst_probe_dispatcher_add_probe (&(GST_REAL_PAD (pad)->probedisp), probe))
487 #define gst_pad_remove_probe(pad, probe) \
488 (gst_probe_dispatcher_remove_probe (&(GST_REAL_PAD (pad)->probedisp), probe))
490 #ifndef GST_DISABLE_LOADSAVE
491 void gst_pad_load_and_link (xmlNodePtr self, GstObject *parent);
496 GstPad* gst_ghost_pad_new (const gchar *name, GstPad *pad);
499 /* templates and factories */
500 GType gst_pad_template_get_type (void);
502 GstPadTemplate* gst_pad_template_new (const gchar *name_template,
503 GstPadDirection direction, GstPadPresence presence,
506 GstPadTemplate * gst_static_pad_template_get (GstStaticPadTemplate *templ);
507 const GstCaps* gst_pad_template_get_caps (GstPadTemplate *templ);
508 const GstCaps* gst_pad_template_get_caps_by_name (GstPadTemplate *templ, const gchar *name);
510 #ifndef GST_DISABLE_LOADSAVE
511 xmlNodePtr gst_ghost_pad_save_thyself (GstPad *pad,
518 #endif /* __GST_PAD_H__ */