%{
+#include <glib-object.h>
#include <glib.h>
#include <stdio.h>
#include <string.h>
+#include <stdlib.h>
+
+#include "../gst_private.h"
+#include "../gst-i18n-lib.h"
+
+#include "../gstconfig.h"
#include "../gstparse.h"
+#include "../gstinfo.h"
+#include "../gsterror.h"
+#include "../gsturi.h"
#include "types.h"
-#define YYDEBUG 1
+/* All error messages in this file are user-visible and need to be translated.
+ * Don't start the message with a capital, and don't end them with a period,
+ * as they will be presented inside a sentence/error.
+ */
+
#define YYERROR_VERBOSE 1
-#define YYPARSE_PARAM pgraph
+#define YYPARSE_PARAM graph
+
+#ifdef __GST_PARSE_TRACE
+static guint __strings;
+static guint __links;
+static guint __chains;
+gchar *
+__gst_parse_strdup (gchar *org)
+{
+ gchar *ret;
+ __strings++;
+ ret = g_strdup (org);
+ /* g_print ("ALLOCATED STR (%3u): %p %s\n", __strings, ret, ret); */
+ return ret;
+}
+void
+__gst_parse_strfree (gchar *str)
+{
+ if (str) {
+ /* g_print ("FREEING STR (%3u): %p %s\n", __strings - 1, str, str); */
+ g_free (str);
+ g_return_if_fail (__strings > 0);
+ __strings--;
+ }
+}
+link_t *__gst_parse_link_new ()
+{
+ link_t *ret;
+ __links++;
+ ret = g_new0 (link_t, 1);
+ /* g_print ("ALLOCATED LINK (%3u): %p\n", __links, ret); */
+ return ret;
+}
+void
+__gst_parse_link_free (link_t *data)
+{
+ if (data) {
+ /* g_print ("FREEING LINK (%3u): %p\n", __links - 1, data); */
+ g_free (data);
+ g_return_if_fail (__links > 0);
+ __links--;
+ }
+}
+chain_t *
+__gst_parse_chain_new ()
+{
+ chain_t *ret;
+ __chains++;
+ ret = g_new0 (chain_t, 1);
+ /* g_print ("ALLOCATED CHAIN (%3u): %p\n", __chains, ret); */
+ return ret;
+}
+void
+__gst_parse_chain_free (chain_t *data)
+{
+ /* g_print ("FREEING CHAIN (%3u): %p\n", __chains - 1, data); */
+ g_free (data);
+ g_return_if_fail (__chains > 0);
+ __chains--;
+}
+
+#endif /* __GST_PARSE_TRACE */
+
+typedef struct {
+ gchar *src_pad;
+ gchar *sink_pad;
+ GstElement *sink;
+ GstCaps *caps;
+ gulong signal_id;
+ /* FIXME: need to connect to "disposed" signal to clean up, but there is no such signal */
+} DelayedLink;
+
+#ifdef G_HAVE_ISO_VARARGS
+#define SET_ERROR(error, type, ...) G_STMT_START{ \
+ GST_CAT_ERROR (GST_CAT_PIPELINE, __VA_ARGS__); \
+ if ((error) && !*(error)) { \
+ g_set_error ((error), GST_PARSE_ERROR, (type), __VA_ARGS__); \
+ } \
+}G_STMT_END
+#define ERROR(type, ...) SET_ERROR (((graph_t *) graph)->error, (type), __VA_ARGS__ )
+#ifndef GST_DISABLE_GST_DEBUG
+# define YYDEBUG 1
+ /* bison 1.35 calls this macro with side effects, we need to make sure the
+ side effects work - crappy bison
+# define YYFPRINTF(a, ...) GST_CAT_DEBUG (GST_CAT_PIPELINE, __VA_ARGS__)
+ */
+# define YYFPRINTF(a, ...) G_STMT_START{ \
+ gchar *temp = g_strdup_printf (__VA_ARGS__); \
+ GST_CAT_LOG (GST_CAT_PIPELINE, temp); \
+ g_free (temp); \
+ }G_STMT_END
+#endif
+
+#elif defined(G_HAVE_GNUC_VARARGS)
+
+#define SET_ERROR(error, type, args...) G_STMT_START{ \
+ GST_CAT_ERROR (GST_CAT_PIPELINE, args ); \
+ if ((error) && !*(error)) { \
+ g_set_error ((error), GST_PARSE_ERROR, (type), args ); \
+ } \
+}G_STMT_END
+#define ERROR(type, args...) SET_ERROR (((graph_t *) graph)->error, (type) , args )
+#ifndef GST_DISABLE_GST_DEBUG
+# define YYDEBUG 1
+ /* bison 1.35 calls this macro with side effects, we need to make sure the
+ side effects work - crappy bison
+# define YYFPRINTF(a, args...) GST_CAT_DEBUG (GST_CAT_PIPELINE, args )
+ */
+# define YYFPRINTF(a, args...) G_STMT_START{ \
+ gchar *temp = g_strdup_printf ( args ); \
+ GST_CAT_LOG (GST_CAT_PIPELINE, temp); \
+ g_free (temp); \
+ }G_STMT_END
+#endif
+
+#elif defined(G_HAVE_ISO_VARARGS)
+
+#define SET_ERROR(error, type, ...) G_STMT_START{ \
+ GST_CAT_ERROR (GST_CAT_PIPELINE, "error while parsing" ); \
+ if ((error) && !*(error)) { \
+ g_set_error ((error), GST_PARSE_ERROR, (type), "error while parsing"); \
+ } \
+}G_STMT_END
+#define ERROR(type, ...) SET_ERROR (((graph_t *) graph)->error, (type), "error while parsing")
+#ifndef GST_DISABLE_GST_DEBUG
+# define YYDEBUG 1
+#endif
+
+#else
+
+static inline void
+SET_ERROR (GError **error, gint type, const char *format, ...)
+{
+ if (error) {
+ if (*error) {
+ g_warning ("error while parsing");
+ } else {
+ va_list varargs;
+ char *string;
+
+ va_start (varargs, format);
+ string = g_strdup_vprintf (format, varargs);
+ va_end (varargs);
+
+ g_set_error (error, GST_PARSE_ERROR, type, string);
+
+ g_free (string);
+ }
+ }
+}
+
+#ifndef GST_DISABLE_GST_DEBUG
+# define YYDEBUG 1
+static inline void
+YYPRINTF(const char *format, ...)
+{
+ va_list varargs;
+ gchar *temp;
+
+ va_start (varargs, format);
+ temp = g_strdup_vprintf ( format, varargs );
+ GST_CAT_LOG (GST_CAT_PIPELINE, "%s", temp);
+ g_free (temp);
+ va_end (varargs);
+}
+#endif
+
+#endif
+
+#define GST_BIN_MAKE(res, type, chainval, assign) G_STMT_START{ \
+ chain_t *chain = chainval; \
+ GSList *walk; \
+ GstBin *bin = (GstBin *) gst_element_factory_make (type, NULL); \
+ if (!chain) { \
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_EMPTY_BIN, _("specified empty bin \"%s\", not allowed"), type); \
+ g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
+ g_slist_free (assign); \
+ YYERROR; \
+ } else if (!bin) { \
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, _("no bin \"%s\", skipping"), type); \
+ g_slist_foreach (assign, (GFunc) gst_parse_strfree, NULL); \
+ g_slist_free (assign); \
+ res = chain; \
+ } else { \
+ for (walk = chain->elements; walk; walk = walk->next ) \
+ gst_bin_add (bin, GST_ELEMENT (walk->data)); \
+ g_slist_free (chain->elements); \
+ chain->elements = g_slist_prepend (NULL, bin); \
+ res = chain; \
+ /* set the properties now */ \
+ for (walk = assign; walk; walk = walk->next) \
+ gst_parse_element_set ((gchar *) walk->data, GST_ELEMENT (bin), graph); \
+ g_slist_free (assign); \
+ } \
+}G_STMT_END
+
+#define MAKE_LINK(link, _src, _src_name, _src_pads, _sink, _sink_name, _sink_pads) G_STMT_START{ \
+ link = gst_parse_link_new (); \
+ link->src = _src; \
+ link->sink = _sink; \
+ link->src_name = _src_name; \
+ link->sink_name = _sink_name; \
+ link->src_pads = _src_pads; \
+ link->sink_pads = _sink_pads; \
+ link->caps = NULL; \
+}G_STMT_END
+
+#define MAKE_REF(link, _src, _pads) G_STMT_START{ \
+ gchar *padname = _src; \
+ GSList *pads = _pads; \
+ if (padname) { \
+ while (*padname != '.') padname++; \
+ *padname = '\0'; \
+ padname++; \
+ if (*padname != '\0') \
+ pads = g_slist_prepend (pads, gst_parse_strdup (padname)); \
+ } \
+ MAKE_LINK (link, NULL, _src, pads, NULL, NULL, NULL); \
+}G_STMT_END
+
+static void
+gst_parse_element_set (gchar *value, GstElement *element, graph_t *graph)
+{
+ GParamSpec *pspec;
+ gchar *pos = value;
+ GValue v = { 0, };
+ GValue v2 = { 0, };
+ /* parse the string, so the property name is null-terminated an pos points
+ to the beginning of the value */
+ while (!g_ascii_isspace (*pos) && (*pos != '=')) pos++;
+ if (*pos == '=') {
+ *pos = '\0';
+ } else {
+ *pos = '\0';
+ pos++;
+ while (g_ascii_isspace (*pos)) pos++;
+ }
+ pos++;
+ while (g_ascii_isspace (*pos)) pos++;
+ if (*pos == '"') {
+ pos++;
+ pos[strlen (pos) - 1] = '\0';
+ }
+ gst_parse_unescape (pos);
+ if ((pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (element), value))) {
+ g_value_init (&v, G_PARAM_SPEC_VALUE_TYPE(pspec));
+ switch (G_TYPE_FUNDAMENTAL (G_PARAM_SPEC_VALUE_TYPE (pspec))) {
+ case G_TYPE_STRING:
+ g_value_set_string (&v, pos);
+ break;
+ case G_TYPE_BOOLEAN:
+ if (g_ascii_strcasecmp (pos, "true") && g_ascii_strcasecmp (pos, "yes") && g_ascii_strcasecmp (pos, "1")) {
+ g_value_set_boolean (&v, FALSE);
+ } else {
+ g_value_set_boolean (&v, TRUE);
+ }
+ break;
+ case G_TYPE_ENUM: {
+ GEnumValue *en;
+ gchar *endptr = NULL;
+ GEnumClass *klass = (GEnumClass *) g_type_class_peek (G_PARAM_SPEC_VALUE_TYPE (pspec));
+ if (klass == NULL) goto error;
+ if (!(en = g_enum_get_value_by_name (klass, pos))) {
+ if (!(en = g_enum_get_value_by_nick (klass, pos))) {
+ gint i = strtol (pos, &endptr, 0);
+ if (endptr && *endptr == '\0') {
+ en = g_enum_get_value (klass, i);
+ }
+ }
+ }
+ if (!en)
+ goto error;
+ g_value_set_enum (&v, en->value);
+ break;
+ }
+ case G_TYPE_INT:
+ case G_TYPE_LONG:
+ case G_TYPE_INT64: {
+ gchar *endptr;
+ glong l;
+ g_value_init (&v2, G_TYPE_LONG);
+ l = strtol (pos, &endptr, 0);
+ if (*endptr != '\0') goto error_conversion;
+ g_value_set_long (&v2, l);
+ if (!g_value_transform (&v2, &v)) goto error_conversion;
+ break;
+ }
+ case G_TYPE_UINT:
+ case G_TYPE_ULONG:
+ case G_TYPE_UINT64: {
+ gchar *endptr;
+ gulong ul;
+ g_value_init (&v2, G_TYPE_ULONG);
+ ul = strtoul (pos, &endptr, 0);
+ if (*endptr != '\0') goto error_conversion;
+ g_value_set_ulong (&v2, ul);
+ if (!g_value_transform (&v2, &v)) goto error_conversion;
+ break;
+ }
+ case G_TYPE_FLOAT:
+ case G_TYPE_DOUBLE: {
+ gchar *endptr;
+ gdouble d;
+ g_value_init (&v2, G_TYPE_DOUBLE);
+ d = g_ascii_strtod (pos, &endptr);
+ if (*endptr != '\0') goto error_conversion;
+ g_value_set_double (&v2, d);
+ if (!g_value_transform (&v2, &v)) goto error_conversion;
+ break;
+ }
+ default:
+ /* add more */
+ g_warning ("property \"%s\" in element %s cannot be set", value, GST_ELEMENT_NAME (element));
+ goto error;
+ }
+ g_object_set_property (G_OBJECT (element), value, &v);
+ } else {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, _("no property \"%s\" in element \"%s\""), value, GST_ELEMENT_NAME (element));
+ }
+
+out:
+ gst_parse_strfree (value);
+ if (G_IS_VALUE (&v))
+ g_value_unset (&v);
+ if (G_IS_VALUE (&v2))
+ g_value_unset (&v2);
+ return;
+
+error:
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
+ _("could not set property \"%s\" in element \"%s\" to \"%s\""),
+ value, GST_ELEMENT_NAME (element), pos);
+ goto out;
+error_conversion:
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
+ _("could not convert \"%s\" so that it fits property \"%s\" in element \"%s\""),
+ pos, value, GST_ELEMENT_NAME (element));
+ goto out;
+}
+static inline void
+gst_parse_free_link (link_t *link)
+{
+ gst_parse_strfree (link->src_name);
+ gst_parse_strfree (link->sink_name);
+ g_slist_foreach (link->src_pads, (GFunc) gst_parse_strfree, NULL);
+ g_slist_foreach (link->sink_pads, (GFunc) gst_parse_strfree, NULL);
+ g_slist_free (link->src_pads);
+ g_slist_free (link->sink_pads);
+ if (link->caps) gst_caps_free (link->caps);
+ gst_parse_link_free (link);
+}
+static void
+gst_parse_element_lock (GstElement *element, gboolean lock)
+{
+ GstPad *pad;
+ GList *walk = (GList *) gst_element_get_pad_list (element);
+ gboolean unlocked_peer = FALSE;
+
+ if (gst_element_is_locked_state (element) == lock)
+ return;
+ /* check if we have an unlocked peer */
+ for (; walk; walk = walk->next) {
+ pad = (GstPad *) GST_PAD_REALIZE (walk->data);
+ if (GST_PAD_IS_SINK (pad) && GST_PAD_PEER (pad) &&
+ !gst_element_is_locked_state (GST_PAD_PARENT (GST_PAD_PEER (pad)))) {
+ unlocked_peer = TRUE;
+ break;
+ }
+ }
+
+ if (!(lock && unlocked_peer)) {
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "setting locked state on element");
+ gst_element_set_locked_state (element, lock);
+ if (!lock)
+ {
+ /* try to sync state with parent */
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "trying to sync state of element with parent");
+ /* FIXME: it would be nice if we can figure out why it failed
+ (e.g. caps nego) and give an error about that instead. */
+ if (!gst_element_sync_state_with_parent (element))
+ GST_ELEMENT_ERROR (element, CORE, STATE_CHANGE, (NULL), (NULL));
+ }
+ } else {
+ return;
+ }
+
+ /* check if there are other pads to (un)lock */
+ walk = (GList *) gst_element_get_pad_list (element);
+ for (; walk; walk = walk->next) {
+ pad = (GstPad *) GST_PAD_REALIZE (walk->data);
+ if (GST_PAD_IS_SRC (pad) && GST_PAD_PEER (pad)) {
+ GstElement *next = GST_ELEMENT (GST_OBJECT_PARENT (GST_PAD_PEER (pad)));
+ if (gst_element_is_locked_state (next) != lock)
+ gst_parse_element_lock (next, lock);
+ }
+ }
+}
+static void
+gst_parse_found_pad (GstElement *src, GstPad *pad, gpointer data)
+{
+ DelayedLink *link = (DelayedLink *) data;
+
+ GST_CAT_INFO (GST_CAT_PIPELINE, "trying delayed linking %s:%s to %s:%s",
+ GST_ELEMENT_NAME (src), link->src_pad,
+ GST_ELEMENT_NAME (link->sink), link->sink_pad);
+
+ if (gst_element_link_pads_filtered (src, link->src_pad, link->sink, link->sink_pad, link->caps)) {
+ /* do this here, we don't want to get any problems later on when unlocking states */
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "delayed linking %s:%s to %s:%s worked",
+ GST_ELEMENT_NAME (src), link->src_pad,
+ GST_ELEMENT_NAME (link->sink), link->sink_pad);
+ g_signal_handler_disconnect (src, link->signal_id);
+ g_free (link->src_pad);
+ g_free (link->sink_pad);
+ if (link->caps) gst_caps_free (link->caps);
+ if (!gst_element_is_locked_state (src))
+ gst_parse_element_lock (link->sink, FALSE);
+ g_free (link);
+ }
+}
+/* both padnames and the caps may be NULL */
+static gboolean
+gst_parse_perform_delayed_link (GstElement *src, const gchar *src_pad,
+ GstElement *sink, const gchar *sink_pad, GstCaps *caps)
+{
+ GList *templs = gst_element_get_pad_template_list (src);
+
+ for (; templs; templs = templs->next) {
+ GstPadTemplate *templ = (GstPadTemplate *) templs->data;
+ if ((GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) && (GST_PAD_TEMPLATE_PRESENCE(templ) == GST_PAD_SOMETIMES))
+ {
+ DelayedLink *data = g_new (DelayedLink, 1);
+
+ /* TODO: maybe we should check if src_pad matches this template's names */
+
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "trying delayed link %s:%s to %s:%s",
+ GST_ELEMENT_NAME (src), src_pad, GST_ELEMENT_NAME (sink), sink_pad);
+
+ data->src_pad = g_strdup (src_pad);
+ data->sink = sink;
+ data->sink_pad = g_strdup (sink_pad);
+ if (caps) {
+ data->caps = gst_caps_copy (caps);
+ } else {
+ data->caps = NULL;
+ }
+ data->signal_id = g_signal_connect (G_OBJECT (src), "new_pad",
+ G_CALLBACK (gst_parse_found_pad), data);
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+/*
+ * performs a link and frees the struct. src and sink elements must be given
+ * return values 0 - link performed
+ * 1 - link delayed
+ * <0 - error
+ */
+static gint
+gst_parse_perform_link (link_t *link, graph_t *graph)
+{
+ GstElement *src = link->src;
+ GstElement *sink = link->sink;
+ GSList *srcs = link->src_pads;
+ GSList *sinks = link->sink_pads;
+ g_assert (GST_IS_ELEMENT (src));
+ g_assert (GST_IS_ELEMENT (sink));
+
+ GST_CAT_INFO (GST_CAT_PIPELINE, "linking %s:%s to %s:%s (%u/%u) with caps \"%" GST_PTR_FORMAT "\"",
+ GST_ELEMENT_NAME (src), link->src_name ? link->src_name : "(any)",
+ GST_ELEMENT_NAME (sink), link->sink_name ? link->sink_name : "(any)",
+ g_slist_length (srcs), g_slist_length (sinks),
+ link->caps);
+
+ if (!srcs || !sinks) {
+ if (gst_element_link_pads_filtered (src, srcs ? (const gchar *) srcs->data : NULL,
+ sink, sinks ? (const gchar *) sinks->data : NULL,
+ link->caps)) {
+ gst_parse_element_lock (sink, gst_element_is_locked_state (src));
+ goto success;
+ } else {
+ if (gst_parse_perform_delayed_link (src, srcs ? (const gchar *) srcs->data : NULL,
+ sink, sinks ? (const gchar *) sinks->data : NULL,
+ link->caps)) {
+ gst_parse_element_lock (sink, TRUE);
+ goto success;
+ } else {
+ goto error;
+ }
+ }
+ }
+ if (g_slist_length (link->src_pads) != g_slist_length (link->src_pads)) {
+ goto error;
+ }
+ while (srcs && sinks) {
+ const gchar *src_pad = (const gchar *) srcs->data;
+ const gchar *sink_pad = (const gchar *) sinks->data;
+ srcs = g_slist_next (srcs);
+ sinks = g_slist_next (sinks);
+ if (gst_element_link_pads_filtered (src, src_pad, sink, sink_pad, link->caps)) {
+ gst_parse_element_lock (sink, gst_element_is_locked_state (src));
+ continue;
+ } else {
+ if (gst_parse_perform_delayed_link (src, src_pad,
+ sink, sink_pad,
+ link->caps)) {
+ gst_parse_element_lock (sink, TRUE);
+ continue;
+ } else {
+ goto error;
+ }
+ }
+ }
+
+success:
+ gst_parse_free_link (link);
+ return 0;
+
+error:
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("could not link %s to %s"), GST_ELEMENT_NAME (src), GST_ELEMENT_NAME (sink));
+ gst_parse_free_link (link);
+ return -1;
+}
+
static int yylex (void *lvalp);
static int yyerror (const char *s);
%union {
gchar *s;
- GValue *v;
+ chain_t *c;
+ link_t *l;
+ GstElement *e;
+ GSList *p;
graph_t *g;
- connection_t *c;
- property_t *p;
- element_t *e;
}
+%token <s> PARSE_URL
%token <s> IDENTIFIER
-%token <c> CONNECTION BCONNECTION FCONNECTION
-%token <v> VALUE
+%left <s> REF PADREF BINREF
+%token <s> ASSIGNMENT
+%token <s> LINK
-%type <s> id
-%type <g> graph bin
-%type <e> element
-%type <p> property_value value
-%type <c> connection rconnection
+%type <g> graph
+%type <c> chain bin
+%type <l> reference
+%type <l> linkpart link
+%type <p> linklist
+%type <e> element
+%type <p> padlist pads assignments
%left '{' '}' '(' ')'
-%left '!' '='
%left ','
-%left '.'
+%right '.'
+%left '!' '='
%pure_parser
%start graph
%%
-id: IDENTIFIER
- ;
-
-value: VALUE { $$ = g_new0 (property_t, 1); $$->value = $1; }
- ;
-
-property_value: id '=' value { $$ = $3; $$->name = $1; }
- ;
-
-element: id { static int i = 0; $$ = g_new0 (element_t, 1);
- $$->type = $1; $$->index = ++i; }
- ;
-
-graph: /* empty */ { $$ = g_new0 (graph_t, 1); *((graph_t**) pgraph) = $$; }
- | graph element { GList *l;
- $$ = $1; l = $$->connections_pending;
- $$->elements = g_list_append ($$->elements, $2);
- $$->current = $2;
- if (!$$->first)
- $$->first = $$->current;
- while (l) {
- ((connection_t*) l->data)->sink_index = $$->current->index;
- l = g_list_next (l);
- }
- if ($$->connections_pending) {
- g_list_free ($$->connections_pending);
- $$->connections_pending = NULL;
- }
- }
- | graph bin { GList *l; $$ = $1; l = $$->connections_pending;
- *((graph_t**) pgraph) = $$;
- $$->bins = g_list_append ($$->bins, $2);
- $2->parent = $$;
- $$->current = $2->first;
- if (!$$->first)
- $$->first = $$->current;
- while (l) {
- ((connection_t*) l->data)->sink_index = $$->current->index;
- l = g_list_next (l);
- }
- if ($$->connections_pending) {
- g_list_free ($$->connections_pending);
- $$->connections_pending = NULL;
- }
- $$->current = $2->current;
- }
- | graph connection { $$ = $1;
- $$->connections = g_list_append ($$->connections, $2);
- if ($$->current)
- $2->src_index = $$->current->index;
- if (!$2->sink_name)
- $$->connections_pending = g_list_append ($$->connections_pending, $2);
- }
- | graph property_value { $$ = $1;
- if (!$$->current) {
- fprintf (stderr, "error: property value assignments must be preceded by an element definition\n");
- YYABORT;
- }
- $$->current->property_values = g_list_append ($$->current->property_values,
- $2);
- }
- ;
-
-bin: '{' graph '}' { $$ = $2; $$->current_bin_type = "thread"; }
- | id '.' '(' graph ')' { $$ = $4; $$->current_bin_type = $1; }
- ;
-
-connection: CONNECTION
- | rconnection
- ;
-
-rconnection: '!' { $$ = g_new0 (connection_t, 1); }
- | BCONNECTION { $$ = $1; }
- | FCONNECTION { $$ = $1; }
- | id ',' rconnection ',' id
- { $$ = $3;
- $$->src_pads = g_list_prepend ($$->src_pads, $1);
- $$->sink_pads = g_list_append ($$->sink_pads, $5);
- }
- ;
+element: IDENTIFIER { $$ = gst_element_factory_make ($1, NULL);
+ if (!$$)
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, _("no element \"%s\""), $1);
+ gst_parse_strfree ($1);
+ if (!$$)
+ YYERROR;
+ }
+ | element ASSIGNMENT { gst_parse_element_set ($2, $1, graph);
+ $$ = $1;
+ }
+ ;
+assignments: /* NOP */ { $$ = NULL; }
+ | assignments ASSIGNMENT { $$ = g_slist_prepend ($1, $2); }
+ ;
+bin: '{' assignments chain '}' { GST_BIN_MAKE ($$, "thread", $3, $2); }
+ | '(' assignments chain ')' { GST_BIN_MAKE ($$, "bin", $3, $2); }
+ | BINREF assignments chain ')' { GST_BIN_MAKE ($$, $1, $3, $2);
+ gst_parse_strfree ($1);
+ }
+ | '{' assignments '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
+ | '(' assignments '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
+ | BINREF assignments ')' { GST_BIN_MAKE ($$, $1, NULL, $2);
+ gst_parse_strfree ($1);
+ }
+ | '{' assignments error '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
+ | '(' assignments error '}' { GST_BIN_MAKE ($$, "thread", NULL, $2); }
+ | BINREF assignments error ')' { GST_BIN_MAKE ($$, $1, NULL, $2);
+ gst_parse_strfree ($1);
+ }
+ ;
+
+pads: PADREF { $$ = g_slist_prepend (NULL, $1); }
+ | PADREF padlist { $$ = $2;
+ $$ = g_slist_prepend ($$, $1);
+ }
+ ;
+padlist: ',' IDENTIFIER { $$ = g_slist_prepend (NULL, $2); }
+ | ',' IDENTIFIER padlist { $$ = g_slist_prepend ($3, $2); }
+ ;
+
+reference: REF { MAKE_REF ($$, $1, NULL); }
+ | REF padlist { MAKE_REF ($$, $1, $2); }
+ ;
+
+linkpart: reference { $$ = $1; }
+ | pads { MAKE_REF ($$, NULL, $1); }
+ | /* NOP */ { MAKE_REF ($$, NULL, NULL); }
+ ;
+
+link: linkpart LINK linkpart { $$ = $1;
+ if ($2) {
+ $$->caps = gst_caps_from_string ($2);
+ if (!$$->caps)
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("could not parse caps \"%s\""), $2);
+ gst_parse_strfree ($2);
+ }
+ $$->sink_name = $3->src_name;
+ $$->sink_pads = $3->src_pads;
+ gst_parse_link_free ($3);
+ }
+ ;
+
+linklist: link { $$ = g_slist_prepend (NULL, $1); }
+ | link linklist { $$ = g_slist_prepend ($2, $1); }
+ | linklist error { $$ = $1; }
+ ;
+
+chain: element { $$ = gst_parse_chain_new ();
+ $$->first = $$->last = $1;
+ $$->front = $$->back = NULL;
+ $$->elements = g_slist_prepend (NULL, $1);
+ }
+ | bin { $$ = $1; }
+ | chain chain { if ($1->back && $2->front) {
+ if (!$1->back->sink_name) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
+ gst_parse_free_link ($1->back);
+ } else {
+ ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $1->back);
+ }
+ if (!$2->front->src_name) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
+ gst_parse_free_link ($2->front);
+ } else {
+ ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $2->front);
+ }
+ $1->back = NULL;
+ } else if ($1->back) {
+ if (!$1->back->sink_name) {
+ $1->back->sink = $2->first;
+ }
+ } else if ($2->front) {
+ if (!$2->front->src_name) {
+ $2->front->src = $1->last;
+ }
+ $1->back = $2->front;
+ }
+
+ if ($1->back) {
+ if (!$1->back->sink || !$1->back->src) {
+ ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $1->back);
+ $1->back = NULL;
+ } else {
+ gst_parse_perform_link ($1->back, (graph_t *) graph);
+ }
+ }
+ $1->last = $2->last;
+ $1->back = $2->back;
+ $1->elements = g_slist_concat ($1->elements, $2->elements);
+ if ($2)
+ gst_parse_chain_free ($2);
+ $$ = $1;
+ }
+ | chain linklist { GSList *walk;
+ if ($1->back) {
+ $2 = g_slist_prepend ($2, $1->back);
+ $1->back = NULL;
+ } else {
+ if (!((link_t *) $2->data)->src_name) {
+ ((link_t *) $2->data)->src = $1->last;
+ }
+ }
+ for (walk = $2; walk; walk = walk->next) {
+ link_t *link = (link_t *) walk->data;
+ if (!link->sink_name && walk->next) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
+ gst_parse_free_link (link);
+ } else if (!link->src_name && !link->src) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
+ gst_parse_free_link (link);
+ } else {
+ if (walk->next) {
+ ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, link);
+ } else {
+ $1->back = link;
+ }
+ }
+ }
+ g_slist_free ($2);
+ $$ = $1;
+ }
+ | chain error { $$ = $1; }
+ | link chain { if ($2->front) {
+ if (!$2->front->src_name) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
+ gst_parse_free_link ($2->front);
+ } else {
+ ((graph_t *) graph)->links = g_slist_prepend (((graph_t *) graph)->links, $2->front);
+ }
+ }
+ if (!$1->sink_name) {
+ $1->sink = $2->first;
+ }
+ $2->front = $1;
+ $$ = $2;
+ }
+ | PARSE_URL chain { $$ = $2;
+ if ($$->front) {
+ GstElement *element =
+ gst_element_make_from_uri (GST_URI_SRC, $1, NULL);
+ if (!element) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
+ _("no source element for URI \"%s\""), $1);
+ } else {
+ $$->front->src = element;
+ ((graph_t *) graph)->links = g_slist_prepend (
+ ((graph_t *) graph)->links, $$->front);
+ $$->front = NULL;
+ $$->elements = g_slist_prepend ($$->elements, element);
+ }
+ } else {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK,
+ _("no element to link URI \"%s\" to"), $1);
+ }
+ g_free ($1);
+ }
+ | link PARSE_URL { GstElement *element =
+ gst_element_make_from_uri (GST_URI_SINK, $2, NULL);
+ if (!element) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_ELEMENT,
+ _("no sink element for URI \"%s\""), $2);
+ YYERROR;
+ } else if ($1->sink_name || $1->sink_pads) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK,
+ _("could not link sink element for URI \"%s\""), $2);
+ YYERROR;
+ } else {
+ $$ = gst_parse_chain_new ();
+ $$->first = $$->last = element;
+ $$->front = $1;
+ $$->front->sink = element;
+ $$->elements = g_slist_prepend (NULL, element);
+ }
+ g_free ($2);
+ }
+ ;
+graph: /* NOP */ { SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_EMPTY, _("empty pipeline not allowed"));
+ $$ = (graph_t *) graph;
+ }
+ | chain { $$ = (graph_t *) graph;
+ if ($1->front) {
+ if (!$1->front->src_name) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without source element"));
+ gst_parse_free_link ($1->front);
+ } else {
+ $$->links = g_slist_prepend ($$->links, $1->front);
+ }
+ $1->front = NULL;
+ }
+ if ($1->back) {
+ if (!$1->back->sink_name) {
+ SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_LINK, _("link without sink element"));
+ gst_parse_free_link ($1->back);
+ } else {
+ $$->links = g_slist_prepend ($$->links, $1->back);
+ }
+ $1->back = NULL;
+ }
+ $$->chain = $1;
+ }
+ ;
%%
static int
yyerror (const char *s)
{
- fprintf (stderr, "error: %s\n", s);
+ /* FIXME: This should go into the GError somehow, but how? */
+ g_warning ("error: %s", s);
return -1;
}
-int _gst_parse_yy_scan_string (char*);
-
-graph_t * _gst_parse_launch (const gchar *str, GError **error)
+struct yy_buffer_state * _gst_parse_yy_scan_string (char*);
+void _gst_parse_yy_delete_buffer (struct yy_buffer_state *);
+GstElement *
+_gst_parse_launch (const gchar *str, GError **error)
{
- graph_t *g = NULL;
- gchar *dstr;
-
- g_return_val_if_fail (str != NULL, NULL);
+ graph_t g;
+ gchar *dstr;
+ GSList *walk;
+ GstBin *bin = NULL;
+ GstElement *ret;
+ struct yy_buffer_state *buf;
+
+ g_return_val_if_fail (str != NULL, NULL);
- dstr = g_strdup (str);
- _gst_parse_yy_scan_string (dstr);
+ g.chain = NULL;
+ g.links = NULL;
+ g.error = error;
+
+#ifdef __GST_PARSE_TRACE
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "TRACE: tracing enabled");
+ __strings = __chains = __links = 0;
+#endif /* __GST_PARSE_TRACE */
-#ifdef DEBUG
- _gst_parse_yydebug = 1;
+ dstr = g_strdup (str);
+ buf = _gst_parse_yy_scan_string (dstr);
+
+#ifndef GST_DISABLE_GST_DEBUG
+ yydebug = 1;
#endif
- if (yyparse (&g) != 0) {
- g_set_error (error,
- GST_PARSE_ERROR,
- GST_PARSE_ERROR_SYNTAX,
- "Invalid syntax");
- g_free (dstr);
- return NULL;
- }
+ if (yyparse (&g) != 0) {
+ SET_ERROR (error, GST_PARSE_ERROR_SYNTAX, "Unrecoverable syntax error while parsing pipeline %s", str);
- g_assert (g != NULL);
+ goto error1;
+ }
+ g_free (dstr);
+ _gst_parse_yy_delete_buffer (buf);
+
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "got %u elements and %u links", g.chain ? g_slist_length (g.chain->elements) : 0, g_slist_length (g.links));
+
+ if (!g.chain) {
+ ret = NULL;
+ } else if (!(((chain_t *) g.chain)->elements->next)) {
+ /* only one toplevel element */
+ ret = (GstElement *) ((chain_t *) g.chain)->elements->data;
+ g_slist_free (((chain_t *) g.chain)->elements);
+ if (GST_IS_BIN (ret))
+ bin = GST_BIN (ret);
+ gst_parse_chain_free (g.chain);
+ } else {
+ /* put all elements in our bin */
+ bin = GST_BIN (gst_element_factory_make ("pipeline", NULL));
+ g_assert (bin);
+
+ for (walk = g.chain->elements; walk; walk = walk->next)
+ gst_bin_add (bin, GST_ELEMENT (walk->data));
+
+ g_slist_free (g.chain->elements);
+ ret = GST_ELEMENT (bin);
+ gst_parse_chain_free (g.chain);
+ }
+
+ /* remove links */
+ for (walk = g.links; walk; walk = walk->next) {
+ link_t *l = (link_t *) walk->data;
+ if (!l->src) {
+ if (l->src_name) {
+ if (bin) {
+ l->src = gst_bin_get_by_name_recurse_up (bin, l->src_name);
+ } else {
+ l->src = strcmp (GST_ELEMENT_NAME (ret), l->src_name) == 0 ? ret : NULL;
+ }
+ }
+ if (!l->src) {
+ SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, "No element named \"%s\" - omitting link", l->src_name);
+ gst_parse_free_link (l);
+ continue;
+ }
+ }
+ if (!l->sink) {
+ if (l->sink_name) {
+ if (bin) {
+ l->sink = gst_bin_get_by_name_recurse_up (bin, l->sink_name);
+ } else {
+ l->sink = strcmp (GST_ELEMENT_NAME (ret), l->sink_name) == 0 ? ret : NULL;
+ }
+ }
+ if (!l->sink) {
+ SET_ERROR (error, GST_PARSE_ERROR_NO_SUCH_ELEMENT, "No element named \"%s\" - omitting link", l->sink_name);
+ gst_parse_free_link (l);
+ continue;
+ }
+ }
+ gst_parse_perform_link (l, &g);
+ }
+ g_slist_free (g.links);
- g_free (dstr);
+out:
+#ifdef __GST_PARSE_TRACE
+ GST_CAT_DEBUG (GST_CAT_PIPELINE, "TRACE: %u strings, %u chains and %u links left", __strings, __chains, __links);
+ if (__strings || __chains || __links) {
+ g_warning ("TRACE: %u strings, %u chains and %u links left", __strings, __chains, __links);
+ }
+#endif /* __GST_PARSE_TRACE */
- /* if the toplevel only contains one bin, make that bin top-level */
- if (g->elements == NULL && g->bins && g->bins->next == NULL) {
- g = (graph_t*)g->bins->data;
- g_free (g->parent);
- g->parent = NULL;
- }
+ return ret;
+
+error1:
+ g_free (dstr);
+
+ if (g.chain) {
+ g_slist_foreach (g.chain->elements, (GFunc)gst_object_unref, NULL);
+ g_slist_free (g.chain->elements);
+ gst_parse_chain_free (g.chain);
+ }
- return g;
+ g_slist_foreach (g.links, (GFunc)gst_parse_free_link, NULL);
+ g_slist_free (g.links);
+
+ if (error)
+ g_assert (*error);
+ ret = NULL;
+
+ goto out;
}
projects / platform / upstream / gstreamer.git / blobdiff