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 "../gststructure.h"
16 #include "../gsturi.h"
17 #include "../gstutils.h"
18 #include "../gstvalue.h"
19 #include "../gstchildproxy.h"
22 /* All error messages in this file are user-visible and need to be translated.
23 * Don't start the message with a capital, and don't end them with a period,
24 * as they will be presented inside a sentence/error.
27 #define YYERROR_VERBOSE 1
28 #define YYLEX_PARAM scanner
30 typedef void* yyscan_t;
32 int _gst_parse_yylex (void * yylval_param , yyscan_t yyscanner);
33 int _gst_parse_yylex_init (yyscan_t scanner);
34 int _gst_parse_yylex_destroy (yyscan_t scanner);
35 struct yy_buffer_state * _gst_parse_yy_scan_string (char* , yyscan_t);
36 void _gst_parse_yypush_buffer_state (void * new_buffer ,yyscan_t yyscanner );
37 void _gst_parse_yypop_buffer_state (yyscan_t yyscanner );
40 #ifdef __GST_PARSE_TRACE
41 static guint __strings;
43 static guint __chains;
45 __gst_parse_strdup (gchar *org)
50 /* g_print ("ALLOCATED STR (%3u): %p %s\n", __strings, ret, ret); */
54 __gst_parse_strfree (gchar *str)
57 /* g_print ("FREEING STR (%3u): %p %s\n", __strings - 1, str, str); */
59 g_return_if_fail (__strings > 0);
63 link_t *__gst_parse_link_new ()
67 ret = g_new0 (link_t, 1);
68 /* g_print ("ALLOCATED LINK (%3u): %p\n", __links, ret); */
72 __gst_parse_link_free (link_t *data)
75 /* g_print ("FREEING LINK (%3u): %p\n", __links - 1, data); */
77 g_return_if_fail (__links > 0);
82 __gst_parse_chain_new ()
86 ret = g_new0 (chain_t, 1);
87 /* g_print ("ALLOCATED CHAIN (%3u): %p\n", __chains, ret); */
91 __gst_parse_chain_free (chain_t *data)
93 /* g_print ("FREEING CHAIN (%3u): %p\n", __chains - 1, data); */
95 g_return_if_fail (__chains > 0);
99 #endif /* __GST_PARSE_TRACE */
107 /* FIXME: need to connect to "disposed" signal to clean up,
108 * but there is no such signal */
118 /*** define SET_ERROR and ERROR macros/functions */
120 #ifdef G_HAVE_ISO_VARARGS
122 # define SET_ERROR(error, type, ...) \
124 GST_CAT_ERROR (GST_CAT_PIPELINE, __VA_ARGS__); \
125 if ((error) && !*(error)) { \
126 g_set_error ((error), GST_PARSE_ERROR, (type), __VA_ARGS__); \
130 # define ERROR(type, ...) \
131 SET_ERROR (graph->error, (type), __VA_ARGS__ )
133 #elif defined(G_HAVE_GNUC_VARARGS)
135 # define SET_ERROR(error, type, args...) \
137 GST_CAT_ERROR (GST_CAT_PIPELINE, args ); \
138 if ((error) && !*(error)) { \
139 g_set_error ((error), GST_PARSE_ERROR, (type), args ); \
143 # define ERROR(type, args...) \
144 SET_ERROR (graph->error,(type) , args )
149 SET_ERROR (GError **error, gint type, const char *format, ...)
153 g_warning ("error while parsing");
158 va_start (varargs, format);
159 string = g_strdup_vprintf (format, varargs);
162 g_set_error (error, GST_PARSE_ERROR, type, string);
169 #endif /* G_HAVE_ISO_VARARGS */
171 /*** define YYPRINTF macro/function if we're debugging */
173 /* bison 1.35 calls this macro with side effects, we need to make sure the
174 side effects work - crappy bison */
176 #ifndef GST_DISABLE_GST_DEBUG
179 # ifdef G_HAVE_ISO_VARARGS
181 /* # define YYFPRINTF(a, ...) GST_CAT_DEBUG (GST_CAT_PIPELINE, __VA_ARGS__) */
182 # define YYFPRINTF(a, ...) \
184 GST_CAT_LOG (GST_CAT_PIPELINE, __VA_ARGS__); \
187 # elif defined(G_HAVE_GNUC_VARARGS)
189 # define YYFPRINTF(a, args...) \
191 GST_CAT_LOG (GST_CAT_PIPELINE, args); \
197 YYPRINTF(const char *format, ...)
202 va_start (varargs, format);
203 temp = g_strdup_vprintf (format, varargs);
204 GST_CAT_LOG (GST_CAT_PIPELINE, "%s", temp);
209 # endif /* G_HAVE_ISO_VARARGS */
211 #endif /* GST_DISABLE_GST_DEBUG */
213 #define ADD_MISSING_ELEMENT(graph,name) G_STMT_START { \
214 if ((graph)->ctx) { \
215 (graph)->ctx->missing_elements = \
216 g_list_append ((graph)->ctx->missing_elements, g_strdup (name)); \
219 #define GST_BIN_MAKE(res, type, chainval, assign, free_string) \
221 chain_t *chain = chainval; \
223 GstBin *bin = (GstBin *) gst_element_factory_make (type, NULL); \
225 SET_ERROR (graph->error, GST_PARSE_ERROR_EMPTY_BIN, \
226 _("specified empty bin \"%s\", not allowed"), type); \
227 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
228 g_slist_free (assign); \
229 gst_object_unref (bin); \
231 gst_parse_strfree (type); /* Need to clean up the string */ \
234 ADD_MISSING_ELEMENT(graph, type); \
235 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, \
236 _("no bin \"%s\", skipping"), type); \
237 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
238 g_slist_free (assign); \
241 for (walk = chain->elements; walk; walk = walk->next ) \
242 gst_bin_add (bin, GST_ELEMENT (walk->data)); \
243 g_slist_free (chain->elements); \
244 chain->elements = g_slist_prepend (NULL, bin); \
246 /* set the properties now */ \
247 for (walk = assign; walk; walk = walk->next) \
248 gst_parse_element_set ((gchar *) walk->data, GST_ELEMENT (bin), graph); \
249 g_slist_free (assign); \
253 #define MAKE_LINK(link, _src, _src_name, _src_pads, _sink, _sink_name, _sink_pads) \
255 link = gst_parse_link_new (); \
257 link->sink = _sink; \
258 link->src_name = _src_name; \
259 link->sink_name = _sink_name; \
260 link->src_pads = _src_pads; \
261 link->sink_pads = _sink_pads; \
265 #define MAKE_REF(link, _src, _pads) \
267 gchar *padname = _src; \
268 GSList *pads = _pads; \
270 while (*padname != '.') padname++; \
273 if (*padname != '\0') \
274 pads = g_slist_prepend (pads, gst_parse_strdup (padname)); \
276 MAKE_LINK (link, NULL, _src, pads, NULL, NULL, NULL); \
279 static void gst_parse_new_child(GstChildProxy *child_proxy, GObject *object,
282 DelayedSet *set = (DelayedSet *) data;
285 GstObject *target = NULL;
288 if (gst_child_proxy_lookup (GST_OBJECT (set->parent), set->name, &target, &pspec)) {
289 gboolean got_value = FALSE;
291 value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
293 GST_CAT_LOG (GST_CAT_PIPELINE, "parsing delayed property %s as a %s from %s", pspec->name,
294 g_type_name (value_type), set->value_str);
295 g_value_init (&v, value_type);
296 if (gst_value_deserialize (&v, set->value_str))
298 else if (g_type_is_a (value_type, GST_TYPE_ELEMENT)) {
301 bin = gst_parse_bin_from_description (set->value_str, TRUE, NULL);
303 g_value_set_object (&v, bin);
307 g_signal_handler_disconnect (child_proxy, set->signal_id);
309 g_free(set->value_str);
313 g_object_set_property (G_OBJECT (target), pspec->name, &v);
320 gst_object_unref (target);
324 GST_CAT_ERROR (GST_CAT_PIPELINE, "could not set property \"%s\" in element \"%s\"",
325 pspec->name, GST_ELEMENT_NAME (target));
331 gst_parse_element_set (gchar *value, GstElement *element, graph_t *graph)
336 GstObject *target = NULL;
339 /* do nothing if assignment is for missing element */
343 /* parse the string, so the property name is null-terminated an pos points
344 to the beginning of the value */
345 while (!g_ascii_isspace (*pos) && (*pos != '=')) pos++;
351 while (g_ascii_isspace (*pos)) pos++;
354 while (g_ascii_isspace (*pos)) pos++;
357 pos[strlen (pos) - 1] = '\0';
359 gst_parse_unescape (pos);
361 if (gst_child_proxy_lookup (GST_OBJECT (element), value, &target, &pspec)) {
362 gboolean got_value = FALSE;
364 value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
366 GST_CAT_LOG (GST_CAT_PIPELINE, "parsing property %s as a %s", pspec->name,
367 g_type_name (value_type));
368 g_value_init (&v, value_type);
369 if (gst_value_deserialize (&v, pos))
371 else if (g_type_is_a (value_type, GST_TYPE_ELEMENT)) {
374 bin = gst_parse_bin_from_description (pos, TRUE, NULL);
376 g_value_set_object (&v, bin);
382 g_object_set_property (G_OBJECT (target), pspec->name, &v);
384 /* do a delayed set */
385 if (GST_IS_CHILD_PROXY (element)) {
386 DelayedSet *data = g_new (DelayedSet, 1);
388 data->parent = element;
389 data->name = g_strdup(value);
390 data->value_str = g_strdup(pos);
391 data->signal_id = g_signal_connect(element, "child-added", G_CALLBACK (gst_parse_new_child), data);
394 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, \
395 _("no property \"%s\" in element \"%s\""), value, \
396 GST_ELEMENT_NAME (element));
401 gst_parse_strfree (value);
405 gst_object_unref (target);
409 SET_ERROR (graph->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
410 _("could not set property \"%s\" in element \"%s\" to \"%s\""),
411 value, GST_ELEMENT_NAME (element), pos);
415 gst_parse_free_link (link_t *link)
417 gst_parse_strfree (link->src_name);
418 gst_parse_strfree (link->sink_name);
419 g_slist_foreach (link->src_pads, (GFunc) gst_parse_strfree, NULL);
420 g_slist_foreach (link->sink_pads, (GFunc) gst_parse_strfree, NULL);
421 g_slist_free (link->src_pads);
422 g_slist_free (link->sink_pads);
423 if (link->caps) gst_caps_unref (link->caps);
424 gst_parse_link_free (link);
428 gst_parse_found_pad (GstElement *src, GstPad *pad, gpointer data)
430 DelayedLink *link = (DelayedLink *) data;
432 GST_CAT_INFO (GST_CAT_PIPELINE, "trying delayed linking %s:%s to %s:%s",
433 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (link->src_pad),
434 GST_STR_NULL (GST_ELEMENT_NAME (link->sink)), GST_STR_NULL (link->sink_pad));
436 if (gst_element_link_pads_filtered (src, link->src_pad, link->sink,
437 link->sink_pad, link->caps)) {
438 /* do this here, we don't want to get any problems later on when
439 * unlocking states */
440 GST_CAT_DEBUG (GST_CAT_PIPELINE, "delayed linking %s:%s to %s:%s worked",
441 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (link->src_pad),
442 GST_STR_NULL (GST_ELEMENT_NAME (link->sink)), GST_STR_NULL (link->sink_pad));
443 g_signal_handler_disconnect (src, link->signal_id);
444 g_free (link->src_pad);
445 g_free (link->sink_pad);
446 if (link->caps) gst_caps_unref (link->caps);
450 /* both padnames and the caps may be NULL */
452 gst_parse_perform_delayed_link (GstElement *src, const gchar *src_pad,
453 GstElement *sink, const gchar *sink_pad,
456 GList *templs = gst_element_class_get_pad_template_list (
457 GST_ELEMENT_GET_CLASS (src));
459 for (; templs; templs = templs->next) {
460 GstPadTemplate *templ = (GstPadTemplate *) templs->data;
461 if ((GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) &&
462 (GST_PAD_TEMPLATE_PRESENCE(templ) == GST_PAD_SOMETIMES))
464 DelayedLink *data = g_new (DelayedLink, 1);
466 /* TODO: maybe we should check if src_pad matches this template's names */
468 GST_CAT_DEBUG (GST_CAT_PIPELINE, "trying delayed link %s:%s to %s:%s",
469 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (src_pad),
470 GST_STR_NULL (GST_ELEMENT_NAME (sink)), GST_STR_NULL (sink_pad));
472 data->src_pad = g_strdup (src_pad);
474 data->sink_pad = g_strdup (sink_pad);
476 data->caps = gst_caps_copy (caps);
480 data->signal_id = g_signal_connect (src, "pad-added",
481 G_CALLBACK (gst_parse_found_pad), data);
488 * performs a link and frees the struct. src and sink elements must be given
489 * return values 0 - link performed
494 gst_parse_perform_link (link_t *link, graph_t *graph)
496 GstElement *src = link->src;
497 GstElement *sink = link->sink;
498 GSList *srcs = link->src_pads;
499 GSList *sinks = link->sink_pads;
500 g_assert (GST_IS_ELEMENT (src));
501 g_assert (GST_IS_ELEMENT (sink));
503 GST_CAT_INFO (GST_CAT_PIPELINE,
504 "linking %s:%s to %s:%s (%u/%u) with caps \"%" GST_PTR_FORMAT "\"",
505 GST_ELEMENT_NAME (src), link->src_name ? link->src_name : "(any)",
506 GST_ELEMENT_NAME (sink), link->sink_name ? link->sink_name : "(any)",
507 g_slist_length (srcs), g_slist_length (sinks), link->caps);
509 if (!srcs || !sinks) {
510 if (gst_element_link_pads_filtered (src,
511 srcs ? (const gchar *) srcs->data : NULL, sink,
512 sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
515 if (gst_parse_perform_delayed_link (src,
516 srcs ? (const gchar *) srcs->data : NULL,
517 sink, sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
524 if (g_slist_length (link->src_pads) != g_slist_length (link->src_pads)) {
527 while (srcs && sinks) {
528 const gchar *src_pad = (const gchar *) srcs->data;
529 const gchar *sink_pad = (const gchar *) sinks->data;
530 srcs = g_slist_next (srcs);
531 sinks = g_slist_next (sinks);
532 if (gst_element_link_pads_filtered (src, src_pad, sink, sink_pad,
536 if (gst_parse_perform_delayed_link (src, src_pad,
547 gst_parse_free_link (link);
551 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
552 _("could not link %s to %s"), GST_ELEMENT_NAME (src),
553 GST_ELEMENT_NAME (sink));
554 gst_parse_free_link (link);
559 static int yyerror (void *scanner, graph_t *graph, const char *s);
572 %token <s> IDENTIFIER
573 %left <s> REF PADREF BINREF
574 %token <s> ASSIGNMENT
580 %type <l> linkpart link
583 %type <p> padlist pads assignments
590 %parse-param { void *scanner }
591 %parse-param { graph_t *graph }
597 element: IDENTIFIER { $$ = gst_element_factory_make ($1, NULL);
599 ADD_MISSING_ELEMENT (graph, $1);
600 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, _("no element \"%s\""), $1);
601 /* if FATAL_ERRORS flag is set, we don't have to worry about backwards
602 * compatibility and can continue parsing and check for other missing
604 if ((graph->flags & GST_PARSE_FLAG_FATAL_ERRORS) == 0) {
605 gst_parse_strfree ($1);
609 gst_parse_strfree ($1);
611 | element ASSIGNMENT { gst_parse_element_set ($2, $1, graph);
615 assignments: /* NOP */ { $$ = NULL; }
616 | assignments ASSIGNMENT { $$ = g_slist_prepend ($1, $2); }
618 bin: '(' assignments chain ')' { GST_BIN_MAKE ($$, "bin", $3, $2, FALSE); }
619 | BINREF assignments chain ')' { GST_BIN_MAKE ($$, $1, $3, $2, TRUE);
620 gst_parse_strfree ($1);
622 | BINREF assignments ')' { GST_BIN_MAKE ($$, $1, NULL, $2, TRUE);
623 gst_parse_strfree ($1);
625 | BINREF assignments error ')' { GST_BIN_MAKE ($$, $1, NULL, $2, TRUE);
626 gst_parse_strfree ($1);
630 pads: PADREF { $$ = g_slist_prepend (NULL, $1); }
631 | PADREF padlist { $$ = $2;
632 $$ = g_slist_prepend ($$, $1);
635 padlist: ',' IDENTIFIER { $$ = g_slist_prepend (NULL, $2); }
636 | ',' IDENTIFIER padlist { $$ = g_slist_prepend ($3, $2); }
639 reference: REF { MAKE_REF ($$, $1, NULL); }
640 | REF padlist { MAKE_REF ($$, $1, $2); }
643 linkpart: reference { $$ = $1; }
644 | pads { MAKE_REF ($$, NULL, $1); }
645 | /* NOP */ { MAKE_REF ($$, NULL, NULL); }
648 link: linkpart LINK linkpart { $$ = $1;
650 $$->caps = gst_caps_from_string ($2);
651 if ($$->caps == NULL)
652 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("could not parse caps \"%s\""), $2);
653 gst_parse_strfree ($2);
655 $$->sink_name = $3->src_name;
656 $$->sink_pads = $3->src_pads;
657 gst_parse_link_free ($3);
661 linklist: link { $$ = g_slist_prepend (NULL, $1); }
662 | link linklist { $$ = g_slist_prepend ($2, $1); }
663 | linklist error { $$ = $1; }
666 chain: element { $$ = gst_parse_chain_new ();
667 $$->first = $$->last = $1;
668 $$->front = $$->back = NULL;
669 $$->elements = g_slist_prepend (NULL, $1);
672 | chain chain { if ($1->back && $2->front) {
673 if (!$1->back->sink_name) {
674 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
675 gst_parse_free_link ($1->back);
677 graph->links = g_slist_prepend (graph->links, $1->back);
679 if (!$2->front->src_name) {
680 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
681 gst_parse_free_link ($2->front);
683 graph->links = g_slist_prepend (graph->links, $2->front);
686 } else if ($1->back) {
687 if (!$1->back->sink_name) {
688 $1->back->sink = $2->first;
690 } else if ($2->front) {
691 if (!$2->front->src_name) {
692 $2->front->src = $1->last;
694 $1->back = $2->front;
698 graph->links = g_slist_prepend (graph->links, $1->back);
702 $1->elements = g_slist_concat ($1->elements, $2->elements);
704 gst_parse_chain_free ($2);
707 | chain linklist { GSList *walk;
709 $2 = g_slist_prepend ($2, $1->back);
712 if (!((link_t *) $2->data)->src_name) {
713 ((link_t *) $2->data)->src = $1->last;
716 for (walk = $2; walk; walk = walk->next) {
717 link_t *link = (link_t *) walk->data;
718 if (!link->sink_name && walk->next) {
719 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
720 gst_parse_free_link (link);
721 } else if (!link->src_name && !link->src) {
722 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
723 gst_parse_free_link (link);
726 graph->links = g_slist_prepend (graph->links, link);
735 | chain error { $$ = $1; }
736 | link chain { if ($2->front) {
737 if (!$2->front->src_name) {
738 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
739 gst_parse_free_link ($2->front);
741 graph->links = g_slist_prepend (graph->links, $2->front);
744 if (!$1->sink_name) {
745 $1->sink = $2->first;
750 | PARSE_URL chain { $$ = $2;
752 GstElement *element =
753 gst_element_make_from_uri (GST_URI_SRC, $1, NULL);
755 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
756 _("no source element for URI \"%s\""), $1);
758 $$->front->src = element;
759 graph->links = g_slist_prepend (
760 graph->links, $$->front);
762 $$->elements = g_slist_prepend ($$->elements, element);
765 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
766 _("no element to link URI \"%s\" to"), $1);
770 | link PARSE_URL { GstElement *element =
771 gst_element_make_from_uri (GST_URI_SINK, $2, NULL);
773 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
774 _("no sink element for URI \"%s\""), $2);
775 gst_parse_link_free ($1);
778 } else if ($1->sink_name || $1->sink_pads) {
779 gst_object_unref (element);
780 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
781 _("could not link sink element for URI \"%s\""), $2);
782 gst_parse_link_free ($1);
786 $$ = gst_parse_chain_new ();
787 $$->first = $$->last = element;
789 $$->front->sink = element;
790 $$->elements = g_slist_prepend (NULL, element);
795 graph: /* NOP */ { SET_ERROR (graph->error, GST_PARSE_ERROR_EMPTY, _("empty pipeline not allowed"));
798 | chain { $$ = graph;
800 if (!$1->front->src_name) {
801 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
802 gst_parse_free_link ($1->front);
804 $$->links = g_slist_prepend ($$->links, $1->front);
809 if (!$1->back->sink_name) {
810 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
811 gst_parse_free_link ($1->back);
813 $$->links = g_slist_prepend ($$->links, $1->back);
825 yyerror (void *scanner, graph_t *graph, const char *s)
827 /* FIXME: This should go into the GError somehow, but how? */
828 GST_WARNING ("Error during parsing: %s", s);
834 _gst_parse_launch (const gchar *str, GError **error, GstParseContext *ctx,
844 g_return_val_if_fail (str != NULL, NULL);
845 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
853 #ifdef __GST_PARSE_TRACE
854 GST_CAT_DEBUG (GST_CAT_PIPELINE, "TRACE: tracing enabled");
855 __strings = __chains = __links = 0;
856 #endif /* __GST_PARSE_TRACE */
858 dstr = g_strdup (str);
859 _gst_parse_yylex_init (&scanner);
860 _gst_parse_yy_scan_string (dstr, scanner);
866 if (yyparse (scanner, &g) != 0) {
867 SET_ERROR (error, GST_PARSE_ERROR_SYNTAX,
868 "Unrecoverable syntax error while parsing pipeline %s", str);
870 _gst_parse_yylex_destroy (scanner);
875 _gst_parse_yylex_destroy (scanner);
878 GST_CAT_DEBUG (GST_CAT_PIPELINE, "got %u elements and %u links",
879 g.chain ? g_slist_length (g.chain->elements) : 0,
880 g_slist_length (g.links));
884 } else if (!g.chain->elements->next) {
885 /* only one toplevel element */
886 ret = (GstElement *) g.chain->elements->data;
887 g_slist_free (g.chain->elements);
888 if (GST_IS_BIN (ret))
890 gst_parse_chain_free (g.chain);
892 /* put all elements in our bin */
893 bin = GST_BIN (gst_element_factory_make ("pipeline", NULL));
896 for (walk = g.chain->elements; walk; walk = walk->next) {
897 if (walk->data != NULL)
898 gst_bin_add (bin, GST_ELEMENT (walk->data));
901 g_slist_free (g.chain->elements);
902 ret = GST_ELEMENT (bin);
903 gst_parse_chain_free (g.chain);
907 for (walk = g.links; walk; walk = walk->next) {
908 link_t *l = (link_t *) walk->data;
912 l->src = gst_bin_get_by_name_recurse_up (bin, l->src_name);
914 gst_object_unref (l->src);
916 l->src = strcmp (GST_ELEMENT_NAME (ret), l->src_name) == 0 ? ret : NULL;
921 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
922 "No element named \"%s\" - omitting link", l->src_name);
924 /* probably a missing element which we've handled already */
926 gst_parse_free_link (l);
933 l->sink = gst_bin_get_by_name_recurse_up (bin, l->sink_name);
935 gst_object_unref (l->sink);
937 l->sink = strcmp (GST_ELEMENT_NAME (ret), l->sink_name) == 0 ? ret : NULL;
942 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
943 "No element named \"%s\" - omitting link", l->sink_name);
945 /* probably a missing element which we've handled already */
947 gst_parse_free_link (l);
951 gst_parse_perform_link (l, &g);
953 g_slist_free (g.links);
956 #ifdef __GST_PARSE_TRACE
957 GST_CAT_DEBUG (GST_CAT_PIPELINE,
958 "TRACE: %u strings, %u chains and %u links left", __strings, __chains,
960 if (__strings || __chains || __links) {
961 g_warning ("TRACE: %u strings, %u chains and %u links left", __strings,
964 #endif /* __GST_PARSE_TRACE */
970 g_slist_foreach (g.chain->elements, (GFunc)gst_object_unref, NULL);
971 g_slist_free (g.chain->elements);
972 gst_parse_chain_free (g.chain);
975 g_slist_foreach (g.links, (GFunc)gst_parse_free_link, NULL);
976 g_slist_free (g.links);