2 * Copyright (C) 2001 RidgeRun (http://www.ridgerun.com/)
3 * Written by Erik Walthinsen <omega@ridgerun.com>
5 * gstindex.c: Index for mappings and other data
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
25 * @short_description: Generate indexes on objects
26 * @see_also: #GstIndexFactory
28 * #GstIndex is used to generate a stream index of one or more elements
31 * Elements will overload the set_index and get_index virtual methods in
32 * #GstElement. When streaming data, the element will add index entries if it
35 * Each element that adds to the index will do that using a writer_id. The
36 * writer_id is obtained from gst_index_get_writer_id().
38 * The application that wants to index the stream will create a new index object
39 * using gst_index_new() or gst_index_factory_make(). The index is assigned to a
40 * specific element, a bin or the whole pipeline. This will cause indexable
41 * elements to add entires to the index while playing.
44 /* FIXME: complete gobject annotations */
45 /* FIXME-0.11: cleanup API
46 * - no one seems to use GstIndexGroup, GstIndexCertainty
48 * - the API for application to use the index is mostly missing
49 * - apps need to get a list of writers
50 * - apps need to be able to iterate over each writers index entry collection
51 * - gst_index_get_assoc_entry() should pass ownership
52 * - the GstIndexEntry structure is large and contains repetitive information
53 * - we want to allow Indexers to implement a saner storage and create
54 * GstIndexEntries on demand (the app has to free them), might even make
55 * sense to ask the app to provide a ptr and fill it.
64 /* Index signals and args */
79 GST_DEBUG_CATEGORY_STATIC (index_debug);
80 #define GST_CAT_DEFAULT index_debug
83 static void gst_index_finalize (GObject * object);
85 static void gst_index_set_property (GObject * object, guint prop_id,
86 const GValue * value, GParamSpec * pspec);
87 static void gst_index_get_property (GObject * object, guint prop_id,
88 GValue * value, GParamSpec * pspec);
90 static GstIndexGroup *gst_index_group_new (guint groupnum);
91 static void gst_index_group_free (GstIndexGroup * group);
93 static gboolean gst_index_path_resolver (GstIndex * index, GstObject * writer,
94 gchar ** writer_string, gpointer data);
95 static gboolean gst_index_gtype_resolver (GstIndex * index, GstObject * writer,
96 gchar ** writer_string, gpointer data);
97 static void gst_index_add_entry (GstIndex * index, GstIndexEntry * entry);
99 static guint gst_index_signals[LAST_SIGNAL] = { 0 };
103 GstIndexResolverMethod method;
104 GstIndexResolver resolver;
109 static const ResolverEntry resolvers[] = {
110 {GST_INDEX_RESOLVER_CUSTOM, NULL, NULL},
111 {GST_INDEX_RESOLVER_GTYPE, gst_index_gtype_resolver, NULL},
112 {GST_INDEX_RESOLVER_PATH, gst_index_path_resolver, NULL},
115 #define GST_TYPE_INDEX_RESOLVER (gst_index_resolver_get_type())
117 gst_index_resolver_get_type (void)
119 static GType index_resolver_type = 0;
120 static const GEnumValue index_resolver[] = {
121 {GST_INDEX_RESOLVER_CUSTOM, "GST_INDEX_RESOLVER_CUSTOM", "custom"},
122 {GST_INDEX_RESOLVER_GTYPE, "GST_INDEX_RESOLVER_GTYPE", "gtype"},
123 {GST_INDEX_RESOLVER_PATH, "GST_INDEX_RESOLVER_PATH", "path"},
127 if (!index_resolver_type) {
128 index_resolver_type =
129 g_enum_register_static ("GstIndexResolver", index_resolver);
131 return index_resolver_type;
134 G_DEFINE_BOXED_TYPE (GstIndexEntry, gst_index_entry,
135 (GBoxedCopyFunc) gst_index_entry_copy,
136 (GBoxedFreeFunc) gst_index_entry_free);
141 GST_DEBUG_CATEGORY_INIT (index_debug, "GST_INDEX", GST_DEBUG_BOLD, \
142 "Generic indexing support"); \
146 G_DEFINE_TYPE (GstIndex, gst_index, GST_TYPE_OBJECT);
149 gst_index_class_init (GstIndexClass * klass)
151 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
154 * GstIndex::entry-added
155 * @gstindex: the object which received the signal.
156 * @arg1: The entry added to the index.
158 * Is emitted when a new entry is added to the index.
160 gst_index_signals[ENTRY_ADDED] =
161 g_signal_new ("entry-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
162 G_STRUCT_OFFSET (GstIndexClass, entry_added), NULL, NULL,
163 g_cclosure_marshal_generic, G_TYPE_NONE, 1, GST_TYPE_INDEX_ENTRY);
165 gobject_class->set_property = gst_index_set_property;
166 gobject_class->get_property = gst_index_get_property;
167 gobject_class->finalize = gst_index_finalize;
169 g_object_class_install_property (gobject_class, ARG_RESOLVER,
170 g_param_spec_enum ("resolver", "Resolver",
171 "Select a predefined object to string mapper",
172 GST_TYPE_INDEX_RESOLVER, GST_INDEX_RESOLVER_PATH,
173 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
177 gst_index_init (GstIndex * index)
179 index->curgroup = gst_index_group_new (0);
181 index->groups = g_list_prepend (NULL, index->curgroup);
183 index->writers = g_hash_table_new (NULL, NULL);
186 index->method = GST_INDEX_RESOLVER_PATH;
187 index->resolver = resolvers[index->method].resolver;
188 index->resolver_user_data = resolvers[index->method].user_data;
190 GST_OBJECT_FLAG_SET (index, GST_INDEX_WRITABLE);
191 GST_OBJECT_FLAG_SET (index, GST_INDEX_READABLE);
193 GST_DEBUG ("created new index");
197 gst_index_free_writer (gpointer key, gpointer value, gpointer user_data)
199 GstIndexEntry *entry = (GstIndexEntry *) value;
202 gst_index_entry_free (entry);
207 gst_index_finalize (GObject * object)
209 GstIndex *index = GST_INDEX (object);
212 g_list_foreach (index->groups, (GFunc) gst_index_group_free, NULL);
213 g_list_free (index->groups);
214 index->groups = NULL;
217 if (index->writers) {
218 g_hash_table_foreach (index->writers, gst_index_free_writer, NULL);
219 g_hash_table_destroy (index->writers);
220 index->writers = NULL;
223 if (index->filter_user_data && index->filter_user_data_destroy)
224 index->filter_user_data_destroy (index->filter_user_data);
226 if (index->resolver_user_data && index->resolver_user_data_destroy)
227 index->resolver_user_data_destroy (index->resolver_user_data);
229 G_OBJECT_CLASS (gst_index_parent_class)->finalize (object);
233 gst_index_set_property (GObject * object, guint prop_id,
234 const GValue * value, GParamSpec * pspec)
238 index = GST_INDEX (object);
242 index->method = (GstIndexResolverMethod) g_value_get_enum (value);
243 index->resolver = resolvers[index->method].resolver;
244 index->resolver_user_data = resolvers[index->method].user_data;
247 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
253 gst_index_get_property (GObject * object, guint prop_id,
254 GValue * value, GParamSpec * pspec)
258 index = GST_INDEX (object);
262 g_value_set_enum (value, index->method);
265 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
270 static GstIndexGroup *
271 gst_index_group_new (guint groupnum)
273 GstIndexGroup *indexgroup = g_slice_new (GstIndexGroup);
275 indexgroup->groupnum = groupnum;
276 indexgroup->entries = NULL;
277 indexgroup->certainty = GST_INDEX_UNKNOWN;
278 indexgroup->peergroup = -1;
280 GST_DEBUG ("created new index group %d", groupnum);
286 gst_index_group_free (GstIndexGroup * group)
288 g_slice_free (GstIndexGroup, group);
291 /* do not resurrect this, add a derived dummy index class instead */
296 * Create a new dummy index object. Use gst_element_set_index() to assign that
297 * to an element or pipeline. This index is not storing anything, but will
298 * still emit e.g. the #GstIndex::entry-added signal.
300 * Returns: (transfer full): a new index object
307 index = g_object_newv (gst_index_get_type (), 0, NULL);
314 * @index: the index to commit
315 * @id: the writer that commited the index
317 * Tell the index that the writer with the given id is done
318 * with this index and is not going to write any more entries
322 gst_index_commit (GstIndex * index, gint id)
324 GstIndexClass *iclass;
326 iclass = GST_INDEX_GET_CLASS (index);
329 iclass->commit (index, id);
333 * gst_index_get_group:
334 * @index: the index to get the current group from
336 * Get the id of the current group.
338 * Returns: the id of the current group.
341 gst_index_get_group (GstIndex * index)
343 return index->curgroup->groupnum;
347 * gst_index_new_group:
348 * @index: the index to create the new group in
350 * Create a new group for the given index. It will be
351 * set as the current group.
353 * Returns: the id of the newly created group.
356 gst_index_new_group (GstIndex * index)
358 index->curgroup = gst_index_group_new (++index->maxgroup);
359 index->groups = g_list_append (index->groups, index->curgroup);
360 GST_DEBUG ("created new group %d in index", index->maxgroup);
361 return index->maxgroup;
365 * gst_index_set_group:
366 * @index: the index to set the new group in
367 * @groupnum: the groupnumber to set
369 * Set the current groupnumber to the given argument.
371 * Returns: %TRUE if the operation succeeded, %FALSE if the group
375 gst_index_set_group (GstIndex * index, gint groupnum)
378 GstIndexGroup *indexgroup;
380 /* first check for null change */
381 if (groupnum == index->curgroup->groupnum)
384 /* else search for the proper group */
385 list = index->groups;
387 indexgroup = (GstIndexGroup *) (list->data);
388 list = g_list_next (list);
389 if (indexgroup->groupnum == groupnum) {
390 index->curgroup = indexgroup;
391 GST_DEBUG ("switched to index group %d", indexgroup->groupnum);
396 /* couldn't find the group in question */
397 GST_DEBUG ("couldn't find index group %d", groupnum);
404 * gst_index_set_certainty:
405 * @index: the index to set the certainty on
406 * @certainty: the certainty to set
408 * Set the certainty of the given index.
411 gst_index_set_certainty (GstIndex * index, GstIndexCertainty certainty)
413 index->curgroup->certainty = certainty;
417 * gst_index_get_certainty:
418 * @index: the index to get the certainty of
420 * Get the certainty of the given index.
422 * Returns: the certainty of the index.
425 gst_index_get_certainty (GstIndex * index)
427 return index->curgroup->certainty;
433 * gst_index_set_filter:
434 * @index: the index to register the filter on
435 * @filter: the filter to register
436 * @user_data: data passed to the filter function
438 * Lets the app register a custom filter function so that
439 * it can select what entries should be stored in the index.
442 gst_index_set_filter (GstIndex * index,
443 GstIndexFilter filter, gpointer user_data)
445 g_return_if_fail (GST_IS_INDEX (index));
447 gst_index_set_filter_full (index, filter, user_data, NULL);
451 * gst_index_set_filter_full:
452 * @index: the index to register the filter on
453 * @filter: the filter to register
454 * @user_data: data passed to the filter function
455 * @user_data_destroy: function to call when @user_data is unset
457 * Lets the app register a custom filter function so that
458 * it can select what entries should be stored in the index.
461 gst_index_set_filter_full (GstIndex * index,
462 GstIndexFilter filter, gpointer user_data, GDestroyNotify user_data_destroy)
464 g_return_if_fail (GST_IS_INDEX (index));
466 if (index->filter_user_data && index->filter_user_data_destroy)
467 index->filter_user_data_destroy (index->filter_user_data);
469 index->filter = filter;
470 index->filter_user_data = user_data;
471 index->filter_user_data_destroy = user_data_destroy;
475 * gst_index_set_resolver:
476 * @index: the index to register the resolver on
477 * @resolver: the resolver to register
478 * @user_data: data passed to the resolver function
480 * Lets the app register a custom function to map index
481 * ids to writer descriptions.
484 gst_index_set_resolver (GstIndex * index,
485 GstIndexResolver resolver, gpointer user_data)
487 gst_index_set_resolver_full (index, resolver, user_data, NULL);
491 * gst_index_set_resolver_full:
492 * @index: the index to register the resolver on
493 * @resolver: the resolver to register
494 * @user_data: data passed to the resolver function
495 * @user_data_destroy: destroy function for @user_data
497 * Lets the app register a custom function to map index
498 * ids to writer descriptions.
501 gst_index_set_resolver_full (GstIndex * index, GstIndexResolver resolver,
502 gpointer user_data, GDestroyNotify user_data_destroy)
504 g_return_if_fail (GST_IS_INDEX (index));
506 if (index->resolver_user_data && index->resolver_user_data_destroy)
507 index->resolver_user_data_destroy (index->resolver_user_data);
509 index->resolver = resolver;
510 index->resolver_user_data = user_data;
511 index->resolver_user_data_destroy = user_data_destroy;
512 index->method = GST_INDEX_RESOLVER_CUSTOM;
517 * gst_index_entry_copy:
518 * @entry: the entry to copy
520 * Copies an entry and returns the result.
522 * Free-function: gst_index_entry_free
524 * Returns: (transfer full): a newly allocated #GstIndexEntry.
527 gst_index_entry_copy (GstIndexEntry * entry)
529 GstIndexEntry *new_entry = g_slice_new (GstIndexEntry);
531 memcpy (new_entry, entry, sizeof (GstIndexEntry));
536 * gst_index_entry_free:
537 * @entry: (transfer full): the entry to free
539 * Free the memory used by the given entry.
542 gst_index_entry_free (GstIndexEntry * entry)
544 switch (entry->type) {
545 case GST_INDEX_ENTRY_ID:
546 if (entry->data.id.description) {
547 g_free (entry->data.id.description);
548 entry->data.id.description = NULL;
551 case GST_INDEX_ENTRY_ASSOCIATION:
552 if (entry->data.assoc.assocs) {
553 g_free (entry->data.assoc.assocs);
554 entry->data.assoc.assocs = NULL;
557 case GST_INDEX_ENTRY_OBJECT:
559 case GST_INDEX_ENTRY_FORMAT:
563 g_slice_free (GstIndexEntry, entry);
568 * gst_index_add_format:
569 * @index: the index to add the entry to
570 * @id: the id of the index writer
571 * @format: the format to add to the index
573 * Adds a format entry into the index. This function is
574 * used to map dynamic #GstFormat ids to their original
577 * Free-function: gst_index_entry_free
579 * Returns: (transfer full): a pointer to the newly added entry in the index.
582 gst_index_add_format (GstIndex * index, gint id, GstFormat format)
584 GstIndexEntry *entry;
585 const GstFormatDefinition *def;
587 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
588 g_return_val_if_fail (format != 0, NULL);
590 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
593 entry = g_slice_new (GstIndexEntry);
594 entry->type = GST_INDEX_ENTRY_FORMAT;
596 entry->data.format.format = format;
598 def = gst_format_get_details (format);
599 entry->data.format.key = def->nick;
601 gst_index_add_entry (index, entry);
609 * @index: the index to add the entry to
610 * @id: the id of the index writer
611 * @description: the description of the index writer
613 * Add an id entry into the index.
615 * Returns: a pointer to the newly added entry in the index.
618 gst_index_add_id (GstIndex * index, gint id, gchar * description)
620 GstIndexEntry *entry;
622 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
623 g_return_val_if_fail (description != NULL, NULL);
625 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
628 entry = g_slice_new (GstIndexEntry);
629 entry->type = GST_INDEX_ENTRY_ID;
631 entry->data.id.description = description;
633 gst_index_add_entry (index, entry);
639 gst_index_path_resolver (GstIndex * index, GstObject * writer,
640 gchar ** writer_string, gpointer data)
642 *writer_string = gst_object_get_path_string (writer);
648 gst_index_gtype_resolver (GstIndex * index, GstObject * writer,
649 gchar ** writer_string, gpointer data)
651 g_return_val_if_fail (writer != NULL, FALSE);
653 if (GST_IS_PAD (writer)) {
654 GstObject *element = gst_object_get_parent (GST_OBJECT (writer));
657 name = gst_object_get_name (writer);
659 *writer_string = g_strdup_printf ("%s.%s",
660 G_OBJECT_TYPE_NAME (element), name);
661 gst_object_unref (element);
663 *writer_string = name;
670 *writer_string = g_strdup (G_OBJECT_TYPE_NAME (writer));
677 * gst_index_get_writer_id:
678 * @index: the index to get a unique write id for
679 * @writer: the #GstObject to allocate an id for
680 * @id: a pointer to a gint to hold the id
682 * Before entries can be added to the index, a writer
683 * should obtain a unique id. The methods to add new entries
684 * to the index require this id as an argument.
686 * The application can implement a custom function to map the writer object
687 * to a string. That string will be used to register or look up an id
691 * The caller must not hold @writer's GST_OBJECT_LOCK(), as the default
692 * resolver may call functions that take the object lock as well, and
693 * the lock is not recursive.
696 * Returns: %TRUE if the writer would be mapped to an id.
699 gst_index_get_writer_id (GstIndex * index, GstObject * writer, gint * id)
701 gchar *writer_string = NULL;
702 GstIndexEntry *entry;
703 GstIndexClass *iclass;
704 gboolean success = FALSE;
706 g_return_val_if_fail (GST_IS_INDEX (index), FALSE);
707 g_return_val_if_fail (GST_IS_OBJECT (writer), FALSE);
708 g_return_val_if_fail (id, FALSE);
712 /* first try to get a previously cached id */
713 entry = g_hash_table_lookup (index->writers, writer);
716 iclass = GST_INDEX_GET_CLASS (index);
718 /* let the app make a string */
719 if (index->resolver) {
723 index->resolver (index, writer, &writer_string,
724 index->resolver_user_data);
728 g_warning ("no resolver found");
732 /* if the index has a resolver, make it map this string to an id */
733 if (iclass->get_writer_id) {
734 success = iclass->get_writer_id (index, id, writer_string);
736 /* if the index could not resolve, we allocate one ourselves */
738 *id = ++index->last_id;
741 entry = gst_index_add_id (index, *id, writer_string);
743 /* index is probably not writable, make an entry anyway
744 * to keep it in our cache */
745 entry = g_slice_new (GstIndexEntry);
746 entry->type = GST_INDEX_ENTRY_ID;
748 entry->data.id.description = writer_string;
750 g_hash_table_insert (index->writers, writer, entry);
759 gst_index_add_entry (GstIndex * index, GstIndexEntry * entry)
761 GstIndexClass *iclass;
763 iclass = GST_INDEX_GET_CLASS (index);
765 if (iclass->add_entry) {
766 iclass->add_entry (index, entry);
769 g_signal_emit (index, gst_index_signals[ENTRY_ADDED], 0, entry);
773 * gst_index_add_associationv:
774 * @index: the index to add the entry to
775 * @id: the id of the index writer
776 * @flags: optinal flags for this entry
777 * @n: number of associations
778 * @list: list of associations
780 * Associate given format/value pairs with each other.
782 * Returns: a pointer to the newly added entry in the index.
785 gst_index_add_associationv (GstIndex * index, gint id,
786 GstIndexAssociationFlags flags, gint n, const GstIndexAssociation * list)
788 GstIndexEntry *entry;
790 g_return_val_if_fail (n > 0, NULL);
791 g_return_val_if_fail (list != NULL, NULL);
792 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
794 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
797 entry = g_slice_new (GstIndexEntry);
799 entry->type = GST_INDEX_ENTRY_ASSOCIATION;
801 entry->data.assoc.flags = flags;
802 entry->data.assoc.assocs = g_memdup (list, sizeof (GstIndexAssociation) * n);
803 entry->data.assoc.nassocs = n;
805 gst_index_add_entry (index, entry);
812 * gst_index_add_association:
813 * @index: the index to add the entry to
814 * @id: the id of the index writer
815 * @flags: optinal flags for this entry
816 * @format: the format of the value
818 * @...: other format/value pairs or 0 to end the list
820 * Associate given format/value pairs with each other.
821 * Be sure to pass gint64 values to this functions varargs,
822 * you might want to use a gint64 cast to be sure.
824 * Returns: a pointer to the newly added entry in the index.
827 gst_index_add_association (GstIndex * index, gint id,
828 GstIndexAssociationFlags flags, GstFormat format, gint64 value, ...)
831 GstIndexEntry *entry;
832 GstIndexAssociation *list;
834 GstFormat cur_format;
837 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
838 g_return_val_if_fail (format != 0, NULL);
840 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
843 array = g_array_new (FALSE, FALSE, sizeof (GstIndexAssociation));
846 GstIndexAssociation a;
851 g_array_append_val (array, a);
854 va_start (args, value);
856 while ((cur_format = va_arg (args, GstFormat))) {
857 GstIndexAssociation a;
859 a.format = cur_format;
860 a.value = va_arg (args, gint64);
862 g_array_append_val (array, a);
867 list = (GstIndexAssociation *) g_array_free (array, FALSE);
869 entry = gst_index_add_associationv (index, id, flags, n_assocs, list);
876 * gst_index_add_object:
877 * @index: the index to add the object to
878 * @id: the id of the index writer
879 * @key: a key for the object
880 * @type: the GType of the object
881 * @object: a pointer to the object to add
883 * Add the given object to the index with the given key.
885 * This function is not yet implemented.
887 * Returns: a pointer to the newly added entry in the index.
890 gst_index_add_object (GstIndex * index, gint id, gchar * key,
891 GType type, gpointer object)
893 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
901 gst_index_compare_func (gconstpointer a, gconstpointer b, gpointer user_data)
911 * gst_index_get_assoc_entry:
912 * @index: the index to search
913 * @id: the id of the index writer
914 * @method: The lookup method to use
915 * @flags: Flags for the entry
916 * @format: the format of the value
917 * @value: the value to find
919 * Finds the given format/value in the index
921 * Returns: the entry associated with the value or %NULL if the
922 * value was not found.
925 gst_index_get_assoc_entry (GstIndex * index, gint id,
926 GstIndexLookupMethod method, GstIndexAssociationFlags flags,
927 GstFormat format, gint64 value)
929 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
934 return gst_index_get_assoc_entry_full (index, id, method, flags, format,
935 value, gst_index_compare_func, NULL);
939 * gst_index_get_assoc_entry_full:
940 * @index: the index to search
941 * @id: the id of the index writer
942 * @method: The lookup method to use
943 * @flags: Flags for the entry
944 * @format: the format of the value
945 * @value: the value to find
946 * @func: the function used to compare entries
947 * @user_data: user data passed to the compare function
949 * Finds the given format/value in the index with the given
950 * compare function and user_data.
952 * Returns: the entry associated with the value or %NULL if the
953 * value was not found.
956 gst_index_get_assoc_entry_full (GstIndex * index, gint id,
957 GstIndexLookupMethod method, GstIndexAssociationFlags flags,
958 GstFormat format, gint64 value, GCompareDataFunc func, gpointer user_data)
960 GstIndexClass *iclass;
962 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
967 iclass = GST_INDEX_GET_CLASS (index);
969 if (iclass->get_assoc_entry)
970 return iclass->get_assoc_entry (index, id, method, flags, format, value,
977 * gst_index_entry_assoc_map:
978 * @entry: the index to search
979 * @format: the format of the value the find
980 * @value: a pointer to store the value
982 * Gets alternative formats associated with the indexentry.
984 * Returns: %TRUE if there was a value associated with the given
988 gst_index_entry_assoc_map (GstIndexEntry * entry,
989 GstFormat format, gint64 * value)
993 g_return_val_if_fail (entry != NULL, FALSE);
994 g_return_val_if_fail (value != NULL, FALSE);
996 for (i = 0; i < GST_INDEX_NASSOCS (entry); i++) {
997 if (GST_INDEX_ASSOC_FORMAT (entry, i) == format) {
998 *value = GST_INDEX_ASSOC_VALUE (entry, i);