2 #include <glib-object.h>
8 #include "../gst_private.h"
9 #include "../gst-i18n-lib.h"
11 #include "../gstconfig.h"
12 #include "../gstparse.h"
13 #include "../gstinfo.h"
14 #include "../gsterror.h"
15 #include "../gsturi.h"
16 #include "../gstutils.h"
17 #include "../gstvalue.h"
18 #include "../gstchildproxy.h"
21 /* All error messages in this file are user-visible and need to be translated.
22 * Don't start the message with a capital, and don't end them with a period,
23 * as they will be presented inside a sentence/error.
26 #define YYERROR_VERBOSE 1
27 #define YYPARSE_PARAM graph
29 #ifdef __GST_PARSE_TRACE
30 static guint __strings;
32 static guint __chains;
34 __gst_parse_strdup (gchar *org)
39 /* g_print ("ALLOCATED STR (%3u): %p %s\n", __strings, ret, ret); */
43 __gst_parse_strfree (gchar *str)
46 /* g_print ("FREEING STR (%3u): %p %s\n", __strings - 1, str, str); */
48 g_return_if_fail (__strings > 0);
52 link_t *__gst_parse_link_new ()
56 ret = g_new0 (link_t, 1);
57 /* g_print ("ALLOCATED LINK (%3u): %p\n", __links, ret); */
61 __gst_parse_link_free (link_t *data)
64 /* g_print ("FREEING LINK (%3u): %p\n", __links - 1, data); */
66 g_return_if_fail (__links > 0);
71 __gst_parse_chain_new ()
75 ret = g_new0 (chain_t, 1);
76 /* g_print ("ALLOCATED CHAIN (%3u): %p\n", __chains, ret); */
80 __gst_parse_chain_free (chain_t *data)
82 /* g_print ("FREEING CHAIN (%3u): %p\n", __chains - 1, data); */
84 g_return_if_fail (__chains > 0);
88 #endif /* __GST_PARSE_TRACE */
96 /* FIXME: need to connect to "disposed" signal to clean up,
97 * but there is no such signal */
100 #ifdef G_HAVE_ISO_VARARGS
101 # define SET_ERROR(error, type, ...) \
103 GST_CAT_ERROR (GST_CAT_PIPELINE, __VA_ARGS__); \
104 if ((error) && !*(error)) { \
105 g_set_error ((error), GST_PARSE_ERROR, (type), __VA_ARGS__); \
109 # define ERROR(type, ...) \
110 SET_ERROR (((graph_t *) graph)->error, (type), __VA_ARGS__ )
112 # ifndef GST_DISABLE_GST_DEBUG
114 /* bison 1.35 calls this macro with side effects, we need to make sure the
115 side effects work - crappy bison
116 # define YYFPRINTF(a, ...) GST_CAT_DEBUG (GST_CAT_PIPELINE, __VA_ARGS__)
118 # define YYFPRINTF(a, ...) \
120 gchar *temp = g_strdup_printf (__VA_ARGS__); \
121 GST_CAT_LOG (GST_CAT_PIPELINE, temp); \
124 # endif /* GST_DISABLE_GST_DEBUG */
126 #elif defined(G_HAVE_GNUC_VARARGS)
128 # define SET_ERROR(error, type, args...) \
130 GST_CAT_ERROR (GST_CAT_PIPELINE, args ); \
131 if ((error) && !*(error)) { \
132 g_set_error ((error), GST_PARSE_ERROR, (type), args ); \
136 # define ERROR(type, args...) \
137 SET_ERROR (((graph_t *) graph)->error,(type) , args )
139 # ifndef GST_DISABLE_GST_DEBUG
141 /* bison 1.35 calls this macro with side effects, we need to make sure the
142 side effects work - crappy bison
143 # define YYFPRINTF(a, args...) GST_CAT_DEBUG (GST_CAT_PIPELINE, args )
145 # define YYFPRINTF(a, args...) \
147 gchar *temp = g_strdup_printf ( args ); \
148 GST_CAT_LOG (GST_CAT_PIPELINE, temp); \
151 # endif /* GST_DISABLE_GST_DEBUG */
156 SET_ERROR (GError **error, gint type, const char *format, ...)
160 g_warning ("error while parsing");
165 va_start (varargs, format);
166 string = g_strdup_vprintf (format, varargs);
169 g_set_error (error, GST_PARSE_ERROR, type, string);
176 # ifndef GST_DISABLE_GST_DEBUG
179 YYPRINTF(const char *format, ...)
184 va_start (varargs, format);
185 temp = g_strdup_vprintf ( format, varargs );
186 GST_CAT_LOG (GST_CAT_PIPELINE, "%s", temp);
190 # endif /* GST_DISABLE_GST_DEBUG */
192 #endif /* G_HAVE_ISO_VARARGS */
194 #define GST_BIN_MAKE(res, type, chainval, assign) \
196 chain_t *chain = chainval; \
198 GstBin *bin = (GstBin *) gst_element_factory_make (type, NULL); \
200 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_EMPTY_BIN, \
201 _("specified empty bin \"%s\", not allowed"), type); \
202 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
203 g_slist_free (assign); \
206 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, \
207 _("no bin \"%s\", skipping"), type); \
208 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
209 g_slist_free (assign); \
212 for (walk = chain->elements; walk; walk = walk->next ) \
213 gst_bin_add (bin, GST_ELEMENT (walk->data)); \
214 g_slist_free (chain->elements); \
215 chain->elements = g_slist_prepend (NULL, bin); \
217 /* set the properties now */ \
218 for (walk = assign; walk; walk = walk->next) \
219 gst_parse_element_set ((gchar *) walk->data, GST_ELEMENT (bin), graph); \
220 g_slist_free (assign); \
224 #define MAKE_LINK(link, _src, _src_name, _src_pads, _sink, _sink_name, _sink_pads) \
226 link = gst_parse_link_new (); \
228 link->sink = _sink; \
229 link->src_name = _src_name; \
230 link->sink_name = _sink_name; \
231 link->src_pads = _src_pads; \
232 link->sink_pads = _sink_pads; \
236 #define MAKE_REF(link, _src, _pads) \
238 gchar *padname = _src; \
239 GSList *pads = _pads; \
241 while (*padname != '.') padname++; \
244 if (*padname != '\0') \
245 pads = g_slist_prepend (pads, gst_parse_strdup (padname)); \
247 MAKE_LINK (link, NULL, _src, pads, NULL, NULL, NULL); \
251 gst_parse_element_set (gchar *value, GstElement *element, graph_t *graph)
260 /* parse the string, so the property name is null-terminated an pos points
261 to the beginning of the value */
262 while (!g_ascii_isspace (*pos) && (*pos != '=')) pos++;
268 while (g_ascii_isspace (*pos)) pos++;
271 while (g_ascii_isspace (*pos)) pos++;
274 pos[strlen (pos) - 1] = '\0';
276 gst_parse_unescape (pos);
278 if (gst_child_proxy_lookup (GST_OBJECT (element), value, &target, &pspec)) {
279 value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
280 GST_LOG ("parsing property %s as a %s", pspec->name,
281 g_type_name (value_type));
282 g_value_init (&v, value_type);
283 if (!gst_value_deserialize (&v, pos))
285 g_object_set_property (G_OBJECT (target), pspec->name, &v);
286 gst_object_unref (target);
288 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, \
289 _("no property \"%s\" in element \"%s\""), value, \
290 GST_ELEMENT_NAME (element));
294 gst_parse_strfree (value);
297 if (G_IS_VALUE (&v2))
302 gst_object_unref (target);
303 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
304 _("could not set property \"%s\" in element \"%s\" to \"%s\""),
305 value, GST_ELEMENT_NAME (element), pos);
309 gst_parse_free_link (link_t *link)
311 gst_parse_strfree (link->src_name);
312 gst_parse_strfree (link->sink_name);
313 g_slist_foreach (link->src_pads, (GFunc) gst_parse_strfree, NULL);
314 g_slist_foreach (link->sink_pads, (GFunc) gst_parse_strfree, NULL);
315 g_slist_free (link->src_pads);
316 g_slist_free (link->sink_pads);
317 if (link->caps) gst_caps_unref (link->caps);
318 gst_parse_link_free (link);
322 gst_parse_element_lock (GstElement *element, gboolean lock)
326 gboolean unlocked_peer = FALSE;
327 gboolean done = FALSE;
330 if (gst_element_is_locked_state (element) == lock)
335 /* check if we have an unlocked peer */
336 pads = gst_element_iterate_pads (element);
339 switch (gst_iterator_next (pads, &data)) {
340 case GST_ITERATOR_OK:
342 GstPad *pad = GST_PAD_CAST (data);
344 if (GST_PAD_IS_SINK (pad) && GST_PAD_PEER (pad) &&
345 !gst_element_is_locked_state (
346 GST_PAD_PARENT (GST_PAD_PEER (pad)))) {
347 unlocked_peer = TRUE;
350 gst_object_unref (GST_OBJECT (pad));
353 case GST_ITERATOR_RESYNC:
354 unlocked_peer = FALSE;
355 gst_iterator_resync (pads);
357 case GST_ITERATOR_DONE:
361 g_assert_not_reached ();
365 gst_iterator_free (pads);
367 if (!(lock && unlocked_peer)) {
368 GST_CAT_DEBUG (GST_CAT_PIPELINE, "setting locked state on element");
369 gst_element_set_locked_state (element, lock);
372 /* try to sync state with parent */
373 GST_CAT_DEBUG (GST_CAT_PIPELINE,
374 "trying to sync state of element with parent");
375 /* FIXME: it would be nice if we can figure out why it failed
376 (e.g. caps nego) and give an error about that instead. */
377 if (gst_element_set_state (element, GST_STATE_PLAYING)
378 == GST_STATE_CHANGE_FAILURE)
379 GST_ELEMENT_ERROR (element, CORE, STATE_CHANGE, (NULL), (NULL));
385 /* check if there are other pads to (un)lock */
386 walk = (GList *) element->pads;
387 for (; walk; walk = walk->next) {
388 pad = GST_PAD_CAST (walk->data);
389 if (GST_PAD_IS_SRC (pad) && GST_PAD_PEER (pad)) {
390 GstElement *next = GST_ELEMENT (GST_OBJECT_PARENT (GST_PAD_PEER (pad)));
391 if (gst_element_is_locked_state (next) != lock)
392 gst_parse_element_lock (next, lock);
397 gst_parse_found_pad (GstElement *src, GstPad *pad, gpointer data)
399 DelayedLink *link = (DelayedLink *) data;
401 GST_CAT_INFO (GST_CAT_PIPELINE, "trying delayed linking %s:%s to %s:%s",
402 GST_ELEMENT_NAME (src), link->src_pad,
403 GST_ELEMENT_NAME (link->sink), link->sink_pad);
405 if (gst_element_link_pads_filtered (src, link->src_pad, link->sink,
406 link->sink_pad, link->caps)) {
407 /* do this here, we don't want to get any problems later on when
408 * unlocking states */
409 GST_CAT_DEBUG (GST_CAT_PIPELINE, "delayed linking %s:%s to %s:%s worked",
410 GST_ELEMENT_NAME (src), link->src_pad,
411 GST_ELEMENT_NAME (link->sink), link->sink_pad);
412 g_signal_handler_disconnect (src, link->signal_id);
413 g_free (link->src_pad);
414 g_free (link->sink_pad);
415 if (link->caps) gst_caps_unref (link->caps);
416 if (!gst_element_is_locked_state (src))
417 gst_parse_element_lock (link->sink, FALSE);
421 /* both padnames and the caps may be NULL */
423 gst_parse_perform_delayed_link (GstElement *src, const gchar *src_pad,
424 GstElement *sink, const gchar *sink_pad,
427 GList *templs = gst_element_class_get_pad_template_list (
428 GST_ELEMENT_GET_CLASS (src));
430 for (; templs; templs = templs->next) {
431 GstPadTemplate *templ = (GstPadTemplate *) templs->data;
432 if ((GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) &&
433 (GST_PAD_TEMPLATE_PRESENCE(templ) == GST_PAD_SOMETIMES))
435 DelayedLink *data = g_new (DelayedLink, 1);
437 /* TODO: maybe we should check if src_pad matches this template's names */
439 GST_CAT_DEBUG (GST_CAT_PIPELINE, "trying delayed link %s:%s to %s:%s",
440 GST_ELEMENT_NAME (src), src_pad,
441 GST_ELEMENT_NAME (sink), sink_pad);
443 data->src_pad = g_strdup (src_pad);
445 data->sink_pad = g_strdup (sink_pad);
447 data->caps = gst_caps_copy (caps);
451 data->signal_id = g_signal_connect (G_OBJECT (src), "pad-added",
452 G_CALLBACK (gst_parse_found_pad), data);
459 * performs a link and frees the struct. src and sink elements must be given
460 * return values 0 - link performed
465 gst_parse_perform_link (link_t *link, graph_t *graph)
467 GstElement *src = link->src;
468 GstElement *sink = link->sink;
469 GSList *srcs = link->src_pads;
470 GSList *sinks = link->sink_pads;
471 g_assert (GST_IS_ELEMENT (src));
472 g_assert (GST_IS_ELEMENT (sink));
474 GST_CAT_INFO (GST_CAT_PIPELINE,
475 "linking %s:%s to %s:%s (%u/%u) with caps \"%" GST_PTR_FORMAT "\"",
476 GST_ELEMENT_NAME (src), link->src_name ? link->src_name : "(any)",
477 GST_ELEMENT_NAME (sink), link->sink_name ? link->sink_name : "(any)",
478 g_slist_length (srcs), g_slist_length (sinks), link->caps);
480 if (!srcs || !sinks) {
481 if (gst_element_link_pads_filtered (src,
482 srcs ? (const gchar *) srcs->data : NULL, sink,
483 sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
484 gst_parse_element_lock (sink, gst_element_is_locked_state (src));
487 if (gst_parse_perform_delayed_link (src,
488 srcs ? (const gchar *) srcs->data : NULL,
489 sink, sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
490 gst_parse_element_lock (sink, TRUE);
497 if (g_slist_length (link->src_pads) != g_slist_length (link->src_pads)) {
500 while (srcs && sinks) {
501 const gchar *src_pad = (const gchar *) srcs->data;
502 const gchar *sink_pad = (const gchar *) sinks->data;
503 srcs = g_slist_next (srcs);
504 sinks = g_slist_next (sinks);
505 if (gst_element_link_pads_filtered (src, src_pad, sink, sink_pad,
507 gst_parse_element_lock (sink, gst_element_is_locked_state (src));
510 if (gst_parse_perform_delayed_link (src, src_pad,
513 gst_parse_element_lock (sink, TRUE);
522 gst_parse_free_link (link);
526 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK,
527 _("could not link %s to %s"), GST_ELEMENT_NAME (src),
528 GST_ELEMENT_NAME (sink));
529 gst_parse_free_link (link);
534 static int yylex (void *lvalp);
535 static int yyerror (const char *s);
548 %token <s> IDENTIFIER
549 %left <s> REF PADREF BINREF
550 %token <s> ASSIGNMENT
556 %type <l> linkpart link
559 %type <p> padlist pads assignments
561 %left '{' '}' '(' ')'
571 element: IDENTIFIER { $$ = gst_element_factory_make ($1, NULL);
573 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, _("no element \"%s\""), $1);
574 gst_parse_strfree ($1);
578 | element ASSIGNMENT { gst_parse_element_set ($2, $1, graph);
582 assignments: /* NOP */ { $$ = NULL; }
583 | assignments ASSIGNMENT { $$ = g_slist_prepend ($1, $2); }
585 bin: '{' assignments chain '}' { GST_BIN_MAKE ($$, "thread", $3, $2); }
586 | '(' assignments chain ')' { GST_BIN_MAKE ($$, "bin", $3, $2); }
587 | BINREF assignments chain ')' { GST_BIN_MAKE ($$, $1, $3, $2);
588 gst_parse_strfree ($1);
590 | '{' assignments '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
591 | '(' assignments '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
592 | BINREF assignments ')' { GST_BIN_MAKE ($$, $1, NULL, $2);
593 gst_parse_strfree ($1);
595 | '{' assignments error '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
596 | '(' assignments error '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
597 | BINREF assignments error ')' { GST_BIN_MAKE ($$, $1, NULL, $2);
598 gst_parse_strfree ($1);
602 pads: PADREF { $$ = g_slist_prepend (NULL, $1); }
603 | PADREF padlist { $$ = $2;
604 $$ = g_slist_prepend ($$, $1);
607 padlist: ',' IDENTIFIER { $$ = g_slist_prepend (NULL, $2); }
608 | ',' IDENTIFIER padlist { $$ = g_slist_prepend ($3, $2); }
611 reference: REF { MAKE_REF ($$, $1, NULL); }
612 | REF padlist { MAKE_REF ($$, $1, $2); }
615 linkpart: reference { $$ = $1; }
616 | pads { MAKE_REF ($$, NULL, $1); }
617 | /* NOP */ { MAKE_REF ($$, NULL, NULL); }
620 link: linkpart LINK linkpart { $$ = $1;
622 $$->caps = gst_caps_from_string ($2);
624 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("could not parse caps \"%s\""), $2);
625 gst_parse_strfree ($2);
627 $$->sink_name = $3->src_name;
628 $$->sink_pads = $3->src_pads;
629 gst_parse_link_free ($3);
633 linklist: link { $$ = g_slist_prepend (NULL, $1); }
634 | link linklist { $$ = g_slist_prepend ($2, $1); }
635 | linklist error { $$ = $1; }
638 chain: element { $$ = gst_parse_chain_new ();
639 $$->first = $$->last = $1;
640 $$->front = $$->back = NULL;
641 $$->elements = g_slist_prepend (NULL, $1);
644 | chain chain { if ($1->back && $2->front) {
645 if (!$1->back->sink_name) {
646 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
647 gst_parse_free_link ($1->back);
649 ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $1->back);
651 if (!$2->front->src_name) {
652 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
653 gst_parse_free_link ($2->front);
655 ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $2->front);
658 } else if ($1->back) {
659 if (!$1->back->sink_name) {
660 $1->back->sink = $2->first;
662 } else if ($2->front) {
663 if (!$2->front->src_name) {
664 $2->front->src = $1->last;
666 $1->back = $2->front;
670 ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $1->back);
674 $1->elements = g_slist_concat ($1->elements, $2->elements);
676 gst_parse_chain_free ($2);
679 | chain linklist { GSList *walk;
681 $2 = g_slist_prepend ($2, $1->back);
684 if (!((link_t *) $2->data)->src_name) {
685 ((link_t *) $2->data)->src = $1->last;
688 for (walk = $2; walk; walk = walk->next) {
689 link_t *link = (link_t *) walk->data;
690 if (!link->sink_name && walk->next) {
691 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
692 gst_parse_free_link (link);
693 } else if (!link->src_name && !link->src) {
694 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
695 gst_parse_free_link (link);
698 ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, link);
707 | chain error { $$ = $1; }
708 | link chain { if ($2->front) {
709 if (!$2->front->src_name) {
710 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
711 gst_parse_free_link ($2->front);
713 ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $2->front);
716 if (!$1->sink_name) {
717 $1->sink = $2->first;
722 | PARSE_URL chain { $$ = $2;
724 GstElement *element =
725 gst_element_make_from_uri (GST_URI_SRC, $1, NULL);
727 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
728 _("no source element for URI \"%s\""), $1);
730 $$->front->src = element;
731 ((graph_t *) graph)->links = g_slist_prepend (
732 ((graph_t *) graph)->links, $$->front);
734 $$->elements = g_slist_prepend ($$->elements, element);
737 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK,
738 _("no element to link URI \"%s\" to"), $1);
742 | link PARSE_URL { GstElement *element =
743 gst_element_make_from_uri (GST_URI_SINK, $2, NULL);
745 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
746 _("no sink element for URI \"%s\""), $2);
748 } else if ($1->sink_name || $1->sink_pads) {
749 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK,
750 _("could not link sink element for URI \"%s\""), $2);
753 $$ = gst_parse_chain_new ();
754 $$->first = $$->last = element;
756 $$->front->sink = element;
757 $$->elements = g_slist_prepend (NULL, element);
762 graph: /* NOP */ { SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_EMPTY, _("empty pipeline not allowed"));
763 $$ = (graph_t *) graph;
765 | chain { $$ = (graph_t *) graph;
767 if (!$1->front->src_name) {
768 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
769 gst_parse_free_link ($1->front);
771 $$->links = g_slist_prepend ($$->links, $1->front);
776 if (!$1->back->sink_name) {
777 SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
778 gst_parse_free_link ($1->back);
780 $$->links = g_slist_prepend ($$->links, $1->back);
790 extern FILE *_gst_parse_yyin;
791 int _gst_parse_yylex (YYSTYPE *lvalp);
793 static int yylex (void *lvalp) {
794 return _gst_parse_yylex ((YYSTYPE*) lvalp);
798 yyerror (const char *s)
800 /* FIXME: This should go into the GError somehow, but how? */
801 g_warning ("error: %s", s);
805 struct yy_buffer_state * _gst_parse_yy_scan_string (char*);
806 void _gst_parse_yy_delete_buffer (struct yy_buffer_state *);
808 _gst_parse_launch (const gchar *str, GError **error)
815 struct yy_buffer_state *buf;
817 g_return_val_if_fail (str != NULL, NULL);
823 #ifdef __GST_PARSE_TRACE
824 GST_CAT_DEBUG (GST_CAT_PIPELINE, "TRACE: tracing enabled");
825 __strings = __chains = __links = 0;
826 #endif /* __GST_PARSE_TRACE */
828 dstr = g_strdup (str);
829 buf = _gst_parse_yy_scan_string (dstr);
831 #ifndef GST_DISABLE_GST_DEBUG
835 if (yyparse (&g) != 0) {
836 SET_ERROR (error, GST_PARSE_ERROR_SYNTAX,
837 "Unrecoverable syntax error while parsing pipeline %s", str);
842 _gst_parse_yy_delete_buffer (buf);
844 GST_CAT_DEBUG (GST_CAT_PIPELINE, "got %u elements and %u links",
845 g.chain ? g_slist_length (g.chain->elements) : 0,
846 g_slist_length (g.links));
850 } else if (!(((chain_t *) g.chain)->elements->next)) {
851 /* only one toplevel element */
852 ret = (GstElement *) ((chain_t *) g.chain)->elements->data;
853 g_slist_free (((chain_t *) g.chain)->elements);
854 if (GST_IS_BIN (ret))
856 gst_parse_chain_free (g.chain);
858 /* put all elements in our bin */
859 bin = GST_BIN (gst_element_factory_make ("pipeline", NULL));
862 for (walk = g.chain->elements; walk; walk = walk->next)
863 gst_bin_add (bin, GST_ELEMENT (walk->data));
865 g_slist_free (g.chain->elements);
866 ret = GST_ELEMENT (bin);
867 gst_parse_chain_free (g.chain);
871 for (walk = g.links; walk; walk = walk->next) {
872 link_t *l = (link_t *) walk->data;
876 l->src = gst_bin_get_by_name_recurse_up (bin, l->src_name);
878 l->src = strcmp (GST_ELEMENT_NAME (ret), l->src_name) == 0 ? ret : NULL;
882 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
883 "No element named \"%s\" - omitting link", l->src_name);
884 gst_parse_free_link (l);
891 l->sink = gst_bin_get_by_name_recurse_up (bin, l->sink_name);
893 l->sink = strcmp (GST_ELEMENT_NAME (ret), l->sink_name) == 0 ? ret : NULL;
897 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
898 "No element named \"%s\" - omitting link", l->sink_name);
899 gst_parse_free_link (l);
903 gst_parse_perform_link (l, &g);
905 g_slist_free (g.links);
908 #ifdef __GST_PARSE_TRACE
909 GST_CAT_DEBUG (GST_CAT_PIPELINE,
910 "TRACE: %u strings, %u chains and %u links left", __strings, __chains,
912 if (__strings || __chains || __links) {
913 g_warning ("TRACE: %u strings, %u chains and %u links left", __strings,
916 #endif /* __GST_PARSE_TRACE */
924 g_slist_foreach (g.chain->elements, (GFunc)gst_object_unref, NULL);
925 g_slist_free (g.chain->elements);
926 gst_parse_chain_free (g.chain);
929 g_slist_foreach (g.links, (GFunc)gst_parse_free_link, NULL);
930 g_slist_free (g.links);