2 #include "../gst_private.h"
4 #include <glib-object.h>
10 #include "../gst-i18n-lib.h"
12 #include "../gstconfig.h"
13 #include "../gstparse.h"
14 #include "../gstinfo.h"
15 #include "../gsterror.h"
16 #include "../gststructure.h"
17 #include "../gsturi.h"
18 #include "../gstutils.h"
19 #include "../gstvalue.h"
20 #include "../gstchildproxy.h"
23 /* All error messages in this file are user-visible and need to be translated.
24 * Don't start the message with a capital, and don't end them with a period,
25 * as they will be presented inside a sentence/error.
28 #define YYERROR_VERBOSE 1
29 #define YYLEX_PARAM scanner
31 typedef void* yyscan_t;
33 int _gst_parse_yylex (void * yylval_param , yyscan_t yyscanner);
34 int _gst_parse_yylex_init (yyscan_t scanner);
35 int _gst_parse_yylex_destroy (yyscan_t scanner);
36 struct yy_buffer_state * _gst_parse_yy_scan_string (char* , yyscan_t);
37 void _gst_parse_yypush_buffer_state (void * new_buffer ,yyscan_t yyscanner );
38 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_slice_new0 (link_t);
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); */
76 g_slice_free (link_t, data);
77 g_return_if_fail (__links > 0);
82 __gst_parse_chain_new ()
86 ret = g_slice_new0 (chain_t);
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); */
94 g_slice_free (chain_t, data);
95 g_return_if_fail (__chains > 0);
99 #endif /* __GST_PARSE_TRACE */
115 /*** define SET_ERROR macro/function */
117 #ifdef G_HAVE_ISO_VARARGS
119 # define SET_ERROR(error, type, ...) \
121 GST_CAT_ERROR (GST_CAT_PIPELINE, __VA_ARGS__); \
122 if ((error) && !*(error)) { \
123 g_set_error ((error), GST_PARSE_ERROR, (type), __VA_ARGS__); \
127 #elif defined(G_HAVE_GNUC_VARARGS)
129 # define SET_ERROR(error, type, args...) \
131 GST_CAT_ERROR (GST_CAT_PIPELINE, args ); \
132 if ((error) && !*(error)) { \
133 g_set_error ((error), GST_PARSE_ERROR, (type), args ); \
140 SET_ERROR (GError **error, gint type, const char *format, ...)
144 g_warning ("error while parsing");
149 va_start (varargs, format);
150 string = g_strdup_vprintf (format, varargs);
153 g_set_error (error, GST_PARSE_ERROR, type, string);
160 #endif /* G_HAVE_ISO_VARARGS */
162 /*** define YYPRINTF macro/function if we're debugging */
164 /* bison 1.35 calls this macro with side effects, we need to make sure the
165 side effects work - crappy bison */
167 #ifndef GST_DISABLE_GST_DEBUG
170 # ifdef G_HAVE_ISO_VARARGS
172 /* # define YYFPRINTF(a, ...) GST_CAT_DEBUG (GST_CAT_PIPELINE, __VA_ARGS__) */
173 # define YYFPRINTF(a, ...) \
175 GST_CAT_LOG (GST_CAT_PIPELINE, __VA_ARGS__); \
178 # elif defined(G_HAVE_GNUC_VARARGS)
180 # define YYFPRINTF(a, args...) \
182 GST_CAT_LOG (GST_CAT_PIPELINE, args); \
188 YYPRINTF(const char *format, ...)
193 va_start (varargs, format);
194 temp = g_strdup_vprintf (format, varargs);
195 GST_CAT_LOG (GST_CAT_PIPELINE, "%s", temp);
200 # endif /* G_HAVE_ISO_VARARGS */
202 #endif /* GST_DISABLE_GST_DEBUG */
204 #define ADD_MISSING_ELEMENT(graph,name) G_STMT_START { \
205 if ((graph)->ctx) { \
206 (graph)->ctx->missing_elements = \
207 g_list_append ((graph)->ctx->missing_elements, g_strdup (name)); \
211 no_free (gconstpointer foo)
216 #define GST_BIN_MAKE(res, type, chainval, assign, type_string_free_func) \
218 chain_t *chain = chainval; \
220 GstBin *bin = (GstBin *) gst_element_factory_make (type, NULL); \
222 SET_ERROR (graph->error, GST_PARSE_ERROR_EMPTY_BIN, \
223 _("specified empty bin \"%s\", not allowed"), type); \
224 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
225 g_slist_free (assign); \
226 gst_object_unref (bin); \
227 type_string_free_func (type); /* Need to clean up the string */ \
230 ADD_MISSING_ELEMENT(graph, type); \
231 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, \
232 _("no bin \"%s\", skipping"), type); \
233 g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
234 g_slist_free (assign); \
237 for (walk = chain->elements; walk; walk = walk->next ) \
238 gst_bin_add (bin, GST_ELEMENT (walk->data)); \
239 g_slist_free (chain->elements); \
240 chain->elements = g_slist_prepend (NULL, bin); \
242 /* set the properties now */ \
243 for (walk = assign; walk; walk = walk->next) \
244 gst_parse_element_set ((gchar *) walk->data, GST_ELEMENT (bin), graph); \
245 g_slist_free (assign); \
249 #define MAKE_LINK(link, _src, _src_name, _src_pads, _sink, _sink_name, _sink_pads) \
251 link = gst_parse_link_new (); \
253 link->sink = _sink; \
254 link->src_name = _src_name; \
255 link->sink_name = _sink_name; \
256 link->src_pads = _src_pads; \
257 link->sink_pads = _sink_pads; \
261 #define MAKE_REF(link, _src, _pads) \
263 gchar *padname = _src; \
264 GSList *pads = _pads; \
266 while (*padname != '.') padname++; \
269 if (*padname != '\0') \
270 pads = g_slist_prepend (pads, gst_parse_strdup (padname)); \
272 MAKE_LINK (link, NULL, _src, pads, NULL, NULL, NULL); \
276 gst_parse_free_delayed_set (DelayedSet *set)
279 g_free(set->value_str);
280 g_slice_free(DelayedSet, set);
283 static void gst_parse_new_child(GstChildProxy *child_proxy, GObject *object,
287 gst_parse_add_delayed_set (GstElement *element, gchar *name, gchar *value_str)
289 DelayedSet *data = g_slice_new0 (DelayedSet);
291 GST_CAT_LOG_OBJECT (GST_CAT_PIPELINE, element, "delaying property set %s to %s",
294 data->name = g_strdup(name);
295 data->value_str = g_strdup(value_str);
296 data->signal_id = g_signal_connect_data(element, "child-added",
297 G_CALLBACK (gst_parse_new_child), data, (GClosureNotify)
298 gst_parse_free_delayed_set, (GConnectFlags) 0);
300 /* FIXME: we would need to listen on all intermediate bins too */
301 if (GST_IS_BIN (element)) {
302 gchar **names, **current;
303 GstElement *parent, *child;
305 current = names = g_strsplit (name, "::", -1);
306 parent = gst_bin_get_by_name (GST_BIN_CAST (element), current[0]);
308 while (parent && current[0]) {
309 child = gst_bin_get_by_name (GST_BIN (parent), current[0]);
310 if (!child && current[1]) {
311 char *sub_name = g_strjoinv ("::", ¤t[0]);
313 gst_parse_add_delayed_set(parent, sub_name, value_str);
323 static void gst_parse_new_child(GstChildProxy *child_proxy, GObject *object,
326 DelayedSet *set = (DelayedSet *) data;
329 GstObject *target = NULL;
332 GST_CAT_LOG_OBJECT (GST_CAT_PIPELINE, child_proxy, "new child %s, checking property %s",
333 GST_OBJECT_NAME(object), set->name);
335 if (gst_child_proxy_lookup (GST_OBJECT (child_proxy), set->name, &target, &pspec)) {
336 gboolean got_value = FALSE;
338 value_type = pspec->value_type;
340 GST_CAT_LOG_OBJECT (GST_CAT_PIPELINE, child_proxy, "parsing delayed property %s as a %s from %s",
341 pspec->name, g_type_name (value_type), set->value_str);
342 g_value_init (&v, value_type);
343 if (gst_value_deserialize (&v, set->value_str))
345 else if (g_type_is_a (value_type, GST_TYPE_ELEMENT)) {
348 bin = gst_parse_bin_from_description (set->value_str, TRUE, NULL);
350 g_value_set_object (&v, bin);
354 g_signal_handler_disconnect (child_proxy, set->signal_id);
357 g_object_set_property (G_OBJECT (target), pspec->name, &v);
359 const gchar *obj_name = GST_OBJECT_NAME(object);
360 gint len = strlen (obj_name);
362 /* do a delayed set */
363 if ((strlen (set->name) > (len + 2)) && !strncmp (set->name, obj_name, len) && !strncmp (&set->name[len], "::", 2)) {
364 gst_parse_add_delayed_set (GST_ELEMENT(child_proxy), set->name, set->value_str);
372 gst_object_unref (target);
376 GST_CAT_ERROR (GST_CAT_PIPELINE, "could not set property \"%s\" in element \"%s\"",
377 pspec->name, GST_ELEMENT_NAME (target));
382 gst_parse_element_set (gchar *value, GstElement *element, graph_t *graph)
387 GstObject *target = NULL;
390 /* do nothing if assignment is for missing element */
394 /* parse the string, so the property name is null-terminated an pos points
395 to the beginning of the value */
396 while (!g_ascii_isspace (*pos) && (*pos != '=')) pos++;
402 while (g_ascii_isspace (*pos)) pos++;
405 while (g_ascii_isspace (*pos)) pos++;
408 pos[strlen (pos) - 1] = '\0';
410 gst_parse_unescape (pos);
412 if (gst_child_proxy_lookup (GST_OBJECT (element), value, &target, &pspec)) {
413 gboolean got_value = FALSE;
415 value_type = pspec->value_type;
417 GST_CAT_LOG_OBJECT (GST_CAT_PIPELINE, element, "parsing property %s as a %s", pspec->name,
418 g_type_name (value_type));
419 g_value_init (&v, value_type);
420 if (gst_value_deserialize (&v, pos))
422 else if (g_type_is_a (value_type, GST_TYPE_ELEMENT)) {
425 bin = gst_parse_bin_from_description (pos, TRUE, NULL);
427 g_value_set_object (&v, bin);
433 g_object_set_property (G_OBJECT (target), pspec->name, &v);
435 /* do a delayed set */
436 if (GST_IS_CHILD_PROXY (element)) {
437 gst_parse_add_delayed_set (element, value, pos);
440 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, \
441 _("no property \"%s\" in element \"%s\""), value, \
442 GST_ELEMENT_NAME (element));
447 gst_parse_strfree (value);
451 gst_object_unref (target);
455 SET_ERROR (graph->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
456 _("could not set property \"%s\" in element \"%s\" to \"%s\""),
457 value, GST_ELEMENT_NAME (element), pos);
462 gst_parse_free_link (link_t *link)
464 gst_parse_strfree (link->src_name);
465 gst_parse_strfree (link->sink_name);
466 g_slist_foreach (link->src_pads, (GFunc) gst_parse_strfree, NULL);
467 g_slist_foreach (link->sink_pads, (GFunc) gst_parse_strfree, NULL);
468 g_slist_free (link->src_pads);
469 g_slist_free (link->sink_pads);
470 if (link->caps) gst_caps_unref (link->caps);
471 gst_parse_link_free (link);
475 gst_parse_free_delayed_link (DelayedLink *link)
477 g_free (link->src_pad);
478 g_free (link->sink_pad);
479 if (link->caps) gst_caps_unref (link->caps);
480 g_slice_free (DelayedLink, link);
484 gst_parse_found_pad (GstElement *src, GstPad *pad, gpointer data)
486 DelayedLink *link = data;
488 GST_CAT_INFO (GST_CAT_PIPELINE, "trying delayed linking %s:%s to %s:%s",
489 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (link->src_pad),
490 GST_STR_NULL (GST_ELEMENT_NAME (link->sink)), GST_STR_NULL (link->sink_pad));
492 if (gst_element_link_pads_filtered (src, link->src_pad, link->sink,
493 link->sink_pad, link->caps)) {
494 /* do this here, we don't want to get any problems later on when
495 * unlocking states */
496 GST_CAT_DEBUG (GST_CAT_PIPELINE, "delayed linking %s:%s to %s:%s worked",
497 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (link->src_pad),
498 GST_STR_NULL (GST_ELEMENT_NAME (link->sink)), GST_STR_NULL (link->sink_pad));
499 g_signal_handler_disconnect (src, link->signal_id);
503 /* both padnames and the caps may be NULL */
505 gst_parse_perform_delayed_link (GstElement *src, const gchar *src_pad,
506 GstElement *sink, const gchar *sink_pad,
509 GList *templs = gst_element_class_get_pad_template_list (
510 GST_ELEMENT_GET_CLASS (src));
512 for (; templs; templs = templs->next) {
513 GstPadTemplate *templ = (GstPadTemplate *) templs->data;
514 if ((GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) &&
515 (GST_PAD_TEMPLATE_PRESENCE(templ) == GST_PAD_SOMETIMES))
517 DelayedLink *data = g_slice_new (DelayedLink);
519 /* TODO: maybe we should check if src_pad matches this template's names */
521 GST_CAT_DEBUG (GST_CAT_PIPELINE, "trying delayed link %s:%s to %s:%s",
522 GST_STR_NULL (GST_ELEMENT_NAME (src)), GST_STR_NULL (src_pad),
523 GST_STR_NULL (GST_ELEMENT_NAME (sink)), GST_STR_NULL (sink_pad));
525 data->src_pad = g_strdup (src_pad);
527 data->sink_pad = g_strdup (sink_pad);
529 data->caps = gst_caps_copy (caps);
533 data->signal_id = g_signal_connect_data (src, "pad-added",
534 G_CALLBACK (gst_parse_found_pad), data,
535 (GClosureNotify) gst_parse_free_delayed_link, (GConnectFlags) 0);
543 * performs a link and frees the struct. src and sink elements must be given
544 * return values 0 - link performed
549 gst_parse_perform_link (link_t *link, graph_t *graph)
551 GstElement *src = link->src;
552 GstElement *sink = link->sink;
553 GSList *srcs = link->src_pads;
554 GSList *sinks = link->sink_pads;
555 g_assert (GST_IS_ELEMENT (src));
556 g_assert (GST_IS_ELEMENT (sink));
558 GST_CAT_INFO (GST_CAT_PIPELINE,
559 "linking %s:%s to %s:%s (%u/%u) with caps \"%" GST_PTR_FORMAT "\"",
560 GST_ELEMENT_NAME (src), link->src_name ? link->src_name : "(any)",
561 GST_ELEMENT_NAME (sink), link->sink_name ? link->sink_name : "(any)",
562 g_slist_length (srcs), g_slist_length (sinks), link->caps);
564 if (!srcs || !sinks) {
565 if (gst_element_link_pads_filtered (src,
566 srcs ? (const gchar *) srcs->data : NULL, sink,
567 sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
570 if (gst_parse_perform_delayed_link (src,
571 srcs ? (const gchar *) srcs->data : NULL,
572 sink, sinks ? (const gchar *) sinks->data : NULL, link->caps)) {
579 if (g_slist_length (link->src_pads) != g_slist_length (link->src_pads)) {
582 while (srcs && sinks) {
583 const gchar *src_pad = (const gchar *) srcs->data;
584 const gchar *sink_pad = (const gchar *) sinks->data;
585 srcs = g_slist_next (srcs);
586 sinks = g_slist_next (sinks);
587 if (gst_element_link_pads_filtered (src, src_pad, sink, sink_pad,
591 if (gst_parse_perform_delayed_link (src, src_pad,
602 gst_parse_free_link (link);
606 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
607 _("could not link %s to %s"), GST_ELEMENT_NAME (src),
608 GST_ELEMENT_NAME (sink));
609 gst_parse_free_link (link);
614 static int yyerror (void *scanner, graph_t *graph, const char *s);
627 %token <s> IDENTIFIER
628 %left <s> REF PADREF BINREF
629 %token <s> ASSIGNMENT
635 %type <l> linkpart link
638 %type <p> padlist pads assignments
645 %parse-param { void *scanner }
646 %parse-param { graph_t *graph }
652 element: IDENTIFIER { $$ = gst_element_factory_make ($1, NULL);
654 ADD_MISSING_ELEMENT (graph, $1);
655 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, _("no element \"%s\""), $1);
656 /* if FATAL_ERRORS flag is set, we don't have to worry about backwards
657 * compatibility and can continue parsing and check for other missing
659 if ((graph->flags & GST_PARSE_FLAG_FATAL_ERRORS) == 0) {
660 gst_parse_strfree ($1);
664 gst_parse_strfree ($1);
666 | element ASSIGNMENT { gst_parse_element_set ($2, $1, graph);
670 assignments: /* NOP */ { $$ = NULL; }
671 | assignments ASSIGNMENT { $$ = g_slist_prepend ($1, $2); }
673 bin: '(' assignments chain ')' { GST_BIN_MAKE ($$, "bin", $3, $2, no_free); }
674 | BINREF assignments chain ')' { GST_BIN_MAKE ($$, $1, $3, $2, gst_parse_strfree);
675 gst_parse_strfree ($1);
677 | BINREF assignments ')' { GST_BIN_MAKE ($$, $1, NULL, $2, gst_parse_strfree);
678 gst_parse_strfree ($1);
680 | BINREF assignments error ')' { GST_BIN_MAKE ($$, $1, NULL, $2, gst_parse_strfree);
681 gst_parse_strfree ($1);
685 pads: PADREF { $$ = g_slist_prepend (NULL, $1); }
686 | PADREF padlist { $$ = $2;
687 $$ = g_slist_prepend ($$, $1);
690 padlist: ',' IDENTIFIER { $$ = g_slist_prepend (NULL, $2); }
691 | ',' IDENTIFIER padlist { $$ = g_slist_prepend ($3, $2); }
694 reference: REF { MAKE_REF ($$, $1, NULL); }
695 | REF padlist { MAKE_REF ($$, $1, $2); }
698 linkpart: reference { $$ = $1; }
699 | pads { MAKE_REF ($$, NULL, $1); }
700 | /* NOP */ { MAKE_REF ($$, NULL, NULL); }
703 link: linkpart LINK linkpart { $$ = $1;
705 $$->caps = gst_caps_from_string ($2);
706 if ($$->caps == NULL)
707 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("could not parse caps \"%s\""), $2);
708 gst_parse_strfree ($2);
710 $$->sink_name = $3->src_name;
711 $$->sink_pads = $3->src_pads;
712 gst_parse_link_free ($3);
716 linklist: link { $$ = g_slist_prepend (NULL, $1); }
717 | link linklist { $$ = g_slist_prepend ($2, $1); }
718 | linklist error { $$ = $1; }
721 chain: element { $$ = gst_parse_chain_new ();
722 $$->first = $$->last = $1;
723 $$->front = $$->back = NULL;
724 $$->elements = g_slist_prepend (NULL, $1);
727 | chain chain { if ($1->back && $2->front) {
728 if (!$1->back->sink_name) {
729 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
730 gst_parse_free_link ($1->back);
732 graph->links = g_slist_prepend (graph->links, $1->back);
734 if (!$2->front->src_name) {
735 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
736 gst_parse_free_link ($2->front);
738 graph->links = g_slist_prepend (graph->links, $2->front);
741 } else if ($1->back) {
742 if (!$1->back->sink_name) {
743 $1->back->sink = $2->first;
745 } else if ($2->front) {
746 if (!$2->front->src_name) {
747 $2->front->src = $1->last;
749 $1->back = $2->front;
753 graph->links = g_slist_prepend (graph->links, $1->back);
757 $1->elements = g_slist_concat ($1->elements, $2->elements);
759 gst_parse_chain_free ($2);
762 | chain linklist { GSList *walk;
764 $2 = g_slist_prepend ($2, $1->back);
767 if (!((link_t *) $2->data)->src_name) {
768 ((link_t *) $2->data)->src = $1->last;
771 for (walk = $2; walk; walk = walk->next) {
772 link_t *link = (link_t *) walk->data;
773 if (!link->sink_name && walk->next) {
774 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
775 gst_parse_free_link (link);
776 } else if (!link->src_name && !link->src) {
777 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
778 gst_parse_free_link (link);
781 graph->links = g_slist_prepend (graph->links, link);
790 | chain error { $$ = $1; }
791 | link chain { if ($2->front) {
792 if (!$2->front->src_name) {
793 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
794 gst_parse_free_link ($2->front);
796 graph->links = g_slist_prepend (graph->links, $2->front);
799 if (!$1->sink_name) {
800 $1->sink = $2->first;
805 | PARSE_URL chain { $$ = $2;
807 GstElement *element =
808 gst_element_make_from_uri (GST_URI_SRC, $1, NULL);
810 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
811 _("no source element for URI \"%s\""), $1);
813 $$->front->src = element;
814 graph->links = g_slist_prepend (
815 graph->links, $$->front);
817 $$->elements = g_slist_prepend ($$->elements, element);
820 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
821 _("no element to link URI \"%s\" to"), $1);
825 | link PARSE_URL { GstElement *element =
826 gst_element_make_from_uri (GST_URI_SINK, $2, NULL);
828 SET_ERROR (graph->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
829 _("no sink element for URI \"%s\""), $2);
830 gst_parse_link_free ($1);
833 } else if ($1->sink_name || $1->sink_pads) {
834 gst_object_unref (element);
835 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK,
836 _("could not link sink element for URI \"%s\""), $2);
837 gst_parse_link_free ($1);
841 $$ = gst_parse_chain_new ();
842 $$->first = $$->last = element;
844 $$->front->sink = element;
845 $$->elements = g_slist_prepend (NULL, element);
850 graph: /* NOP */ { SET_ERROR (graph->error, GST_PARSE_ERROR_EMPTY, _("empty pipeline not allowed"));
853 | chain { $$ = graph;
855 if (!$1->front->src_name) {
856 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without source element"));
857 gst_parse_free_link ($1->front);
859 $$->links = g_slist_prepend ($$->links, $1->front);
864 if (!$1->back->sink_name) {
865 SET_ERROR (graph->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
866 gst_parse_free_link ($1->back);
868 $$->links = g_slist_prepend ($$->links, $1->back);
880 yyerror (void *scanner, graph_t *graph, const char *s)
882 /* FIXME: This should go into the GError somehow, but how? */
883 GST_WARNING ("Error during parsing: %s", s);
889 _gst_parse_launch (const gchar *str, GError **error, GstParseContext *ctx,
899 g_return_val_if_fail (str != NULL, NULL);
900 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
908 #ifdef __GST_PARSE_TRACE
909 GST_CAT_DEBUG (GST_CAT_PIPELINE, "TRACE: tracing enabled");
910 __strings = __chains = __links = 0;
911 #endif /* __GST_PARSE_TRACE */
913 dstr = g_strdup (str);
914 _gst_parse_yylex_init (&scanner);
915 _gst_parse_yy_scan_string (dstr, scanner);
921 if (yyparse (scanner, &g) != 0) {
922 SET_ERROR (error, GST_PARSE_ERROR_SYNTAX,
923 "Unrecoverable syntax error while parsing pipeline %s", str);
925 _gst_parse_yylex_destroy (scanner);
930 _gst_parse_yylex_destroy (scanner);
933 GST_CAT_DEBUG (GST_CAT_PIPELINE, "got %u elements and %u links",
934 g.chain ? g_slist_length (g.chain->elements) : 0,
935 g_slist_length (g.links));
939 } else if (!g.chain->elements->next) {
940 /* only one toplevel element */
941 ret = (GstElement *) g.chain->elements->data;
942 g_slist_free (g.chain->elements);
943 if (GST_IS_BIN (ret))
945 gst_parse_chain_free (g.chain);
947 /* put all elements in our bin */
948 bin = GST_BIN (gst_element_factory_make ("pipeline", NULL));
951 for (walk = g.chain->elements; walk; walk = walk->next) {
952 if (walk->data != NULL)
953 gst_bin_add (bin, GST_ELEMENT (walk->data));
956 g_slist_free (g.chain->elements);
957 ret = GST_ELEMENT (bin);
958 gst_parse_chain_free (g.chain);
962 for (walk = g.links; walk; walk = walk->next) {
963 link_t *l = (link_t *) walk->data;
967 l->src = gst_bin_get_by_name_recurse_up (bin, l->src_name);
969 gst_object_unref (l->src);
971 l->src = strcmp (GST_ELEMENT_NAME (ret), l->src_name) == 0 ? ret : NULL;
976 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
977 "No element named \"%s\" - omitting link", l->src_name);
979 /* probably a missing element which we've handled already */
981 gst_parse_free_link (l);
988 l->sink = gst_bin_get_by_name_recurse_up (bin, l->sink_name);
990 gst_object_unref (l->sink);
992 l->sink = strcmp (GST_ELEMENT_NAME (ret), l->sink_name) == 0 ? ret : NULL;
997 SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
998 "No element named \"%s\" - omitting link", l->sink_name);
1000 /* probably a missing element which we've handled already */
1002 gst_parse_free_link (l);
1006 gst_parse_perform_link (l, &g);
1008 g_slist_free (g.links);
1011 #ifdef __GST_PARSE_TRACE
1012 GST_CAT_DEBUG (GST_CAT_PIPELINE,
1013 "TRACE: %u strings, %u chains and %u links left", __strings, __chains,
1015 if (__strings || __chains || __links) {
1016 g_warning ("TRACE: %u strings, %u chains and %u links left", __strings,
1019 #endif /* __GST_PARSE_TRACE */
1025 g_slist_foreach (g.chain->elements, (GFunc)gst_object_unref, NULL);
1026 g_slist_free (g.chain->elements);
1027 gst_parse_chain_free (g.chain);
1030 g_slist_foreach (g.links, (GFunc)gst_parse_free_link, NULL);
1031 g_slist_free (g.links);