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 ("GstFlvDemuxIndexResolver", index_resolver);
131 return index_resolver_type;
135 gst_index_entry_get_type (void)
137 static GType index_entry_type = 0;
139 if (!index_entry_type) {
140 index_entry_type = g_boxed_type_register_static ("GstFlvDemuxIndexEntry",
141 (GBoxedCopyFunc) gst_index_entry_copy,
142 (GBoxedFreeFunc) gst_index_entry_free);
144 return index_entry_type;
150 GST_DEBUG_CATEGORY_INIT (index_debug, "GST_INDEX", GST_DEBUG_BOLD, \
151 "Generic indexing support"); \
155 typedef GstIndex GstFlvDemuxIndex;
156 typedef GstIndexClass GstFlvDemuxIndexClass;
157 //typedef GstIndexEntry GstFlvDemuxIndexEntry;
158 G_DEFINE_TYPE (GstFlvDemuxIndex, gst_index, GST_TYPE_OBJECT);
161 gst_index_class_init (GstIndexClass * klass)
163 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
166 * GstIndex::entry-added
167 * @gstindex: the object which received the signal.
168 * @arg1: The entry added to the index.
170 * Is emitted when a new entry is added to the index.
172 gst_index_signals[ENTRY_ADDED] =
173 g_signal_new ("entry-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
174 G_STRUCT_OFFSET (GstIndexClass, entry_added), NULL, NULL,
175 NULL, G_TYPE_NONE, 1, GST_TYPE_INDEX_ENTRY);
177 gobject_class->set_property = gst_index_set_property;
178 gobject_class->get_property = gst_index_get_property;
179 gobject_class->finalize = gst_index_finalize;
181 g_object_class_install_property (gobject_class, PROP_RESOLVER,
182 g_param_spec_enum ("resolver", "Resolver",
183 "Select a predefined object to string mapper",
184 GST_TYPE_INDEX_RESOLVER, GST_INDEX_RESOLVER_PATH,
185 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
189 gst_index_init (GstIndex * index)
191 index->curgroup = gst_index_group_new (0);
193 index->groups = g_list_prepend (NULL, index->curgroup);
195 index->writers = g_hash_table_new (NULL, NULL);
198 index->method = GST_INDEX_RESOLVER_PATH;
199 index->resolver = resolvers[index->method].resolver;
200 index->resolver_user_data = resolvers[index->method].user_data;
202 GST_OBJECT_FLAG_SET (index, GST_INDEX_WRITABLE);
203 GST_OBJECT_FLAG_SET (index, GST_INDEX_READABLE);
205 GST_DEBUG ("created new index");
209 gst_index_free_writer (gpointer key, gpointer value, gpointer user_data)
211 GstIndexEntry *entry = (GstIndexEntry *) value;
214 gst_index_entry_free (entry);
219 gst_index_finalize (GObject * object)
221 GstIndex *index = GST_INDEX (object);
224 g_list_foreach (index->groups, (GFunc) gst_index_group_free, NULL);
225 g_list_free (index->groups);
226 index->groups = NULL;
229 if (index->writers) {
230 g_hash_table_foreach (index->writers, gst_index_free_writer, NULL);
231 g_hash_table_destroy (index->writers);
232 index->writers = NULL;
235 if (index->filter_user_data && index->filter_user_data_destroy)
236 index->filter_user_data_destroy (index->filter_user_data);
238 if (index->resolver_user_data && index->resolver_user_data_destroy)
239 index->resolver_user_data_destroy (index->resolver_user_data);
241 G_OBJECT_CLASS (gst_index_parent_class)->finalize (object);
245 gst_index_set_property (GObject * object, guint prop_id,
246 const GValue * value, GParamSpec * pspec)
250 index = GST_INDEX (object);
254 index->method = (GstIndexResolverMethod) g_value_get_enum (value);
255 index->resolver = resolvers[index->method].resolver;
256 index->resolver_user_data = resolvers[index->method].user_data;
259 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
265 gst_index_get_property (GObject * object, guint prop_id,
266 GValue * value, GParamSpec * pspec)
270 index = GST_INDEX (object);
274 g_value_set_enum (value, index->method);
277 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
282 static GstIndexGroup *
283 gst_index_group_new (guint groupnum)
285 GstIndexGroup *indexgroup = g_slice_new (GstIndexGroup);
287 indexgroup->groupnum = groupnum;
288 indexgroup->entries = NULL;
289 indexgroup->certainty = GST_INDEX_UNKNOWN;
290 indexgroup->peergroup = -1;
292 GST_DEBUG ("created new index group %d", groupnum);
298 gst_index_group_free (GstIndexGroup * group)
300 g_slice_free (GstIndexGroup, group);
303 /* do not resurrect this, add a derived dummy index class instead */
308 * Create a new dummy index object. Use gst_element_set_index() to assign that
309 * to an element or pipeline. This index is not storing anything, but will
310 * still emit e.g. the #GstIndex::entry-added signal.
312 * Returns: (transfer full): a new index object
319 index = g_object_newv (gst_index_get_type (), 0, NULL);
327 * @index: the index to commit
328 * @id: the writer that commited the index
330 * Tell the index that the writer with the given id is done
331 * with this index and is not going to write any more entries
335 gst_index_commit (GstIndex * index, gint id)
337 GstIndexClass *iclass;
339 iclass = GST_INDEX_GET_CLASS (index);
342 iclass->commit (index, id);
347 * gst_index_get_group:
348 * @index: the index to get the current group from
350 * Get the id of the current group.
352 * Returns: the id of the current group.
355 gst_index_get_group (GstIndex * index)
357 return index->curgroup->groupnum;
361 * gst_index_new_group:
362 * @index: the index to create the new group in
364 * Create a new group for the given index. It will be
365 * set as the current group.
367 * Returns: the id of the newly created group.
370 gst_index_new_group (GstIndex * index)
372 index->curgroup = gst_index_group_new (++index->maxgroup);
373 index->groups = g_list_append (index->groups, index->curgroup);
374 GST_DEBUG ("created new group %d in index", index->maxgroup);
375 return index->maxgroup;
379 * gst_index_set_group:
380 * @index: the index to set the new group in
381 * @groupnum: the groupnumber to set
383 * Set the current groupnumber to the given argument.
385 * Returns: TRUE if the operation succeeded, FALSE if the group
389 gst_index_set_group (GstIndex * index, gint groupnum)
392 GstIndexGroup *indexgroup;
394 /* first check for null change */
395 if (groupnum == index->curgroup->groupnum)
398 /* else search for the proper group */
399 list = index->groups;
401 indexgroup = (GstIndexGroup *) (list->data);
402 list = g_list_next (list);
403 if (indexgroup->groupnum == groupnum) {
404 index->curgroup = indexgroup;
405 GST_DEBUG ("switched to index group %d", indexgroup->groupnum);
410 /* couldn't find the group in question */
411 GST_DEBUG ("couldn't find index group %d", groupnum);
418 * gst_index_set_certainty:
419 * @index: the index to set the certainty on
420 * @certainty: the certainty to set
422 * Set the certainty of the given index.
425 gst_index_set_certainty (GstIndex * index, GstIndexCertainty certainty)
427 index->curgroup->certainty = certainty;
431 * gst_index_get_certainty:
432 * @index: the index to get the certainty of
434 * Get the certainty of the given index.
436 * Returns: the certainty of the index.
439 gst_index_get_certainty (GstIndex * index)
441 return index->curgroup->certainty;
447 * gst_index_set_filter:
448 * @index: the index to register the filter on
449 * @filter: the filter to register
450 * @user_data: data passed to the filter function
452 * Lets the app register a custom filter function so that
453 * it can select what entries should be stored in the index.
456 gst_index_set_filter (GstIndex * index,
457 GstIndexFilter filter, gpointer user_data)
459 g_return_if_fail (GST_IS_INDEX (index));
461 gst_index_set_filter_full (index, filter, user_data, NULL);
465 * gst_index_set_filter_full:
466 * @index: the index to register the filter on
467 * @filter: the filter to register
468 * @user_data: data passed to the filter function
469 * @user_data_destroy: function to call when @user_data is unset
471 * Lets the app register a custom filter function so that
472 * it can select what entries should be stored in the index.
475 gst_index_set_filter_full (GstIndex * index,
476 GstIndexFilter filter, gpointer user_data, GDestroyNotify user_data_destroy)
478 g_return_if_fail (GST_IS_INDEX (index));
480 if (index->filter_user_data && index->filter_user_data_destroy)
481 index->filter_user_data_destroy (index->filter_user_data);
483 index->filter = filter;
484 index->filter_user_data = user_data;
485 index->filter_user_data_destroy = user_data_destroy;
489 * gst_index_set_resolver:
490 * @index: the index to register the resolver on
491 * @resolver: the resolver to register
492 * @user_data: data passed to the resolver function
494 * Lets the app register a custom function to map index
495 * ids to writer descriptions.
498 gst_index_set_resolver (GstIndex * index,
499 GstIndexResolver resolver, gpointer user_data)
501 gst_index_set_resolver_full (index, resolver, user_data, NULL);
505 * gst_index_set_resolver_full:
506 * @index: the index to register the resolver on
507 * @resolver: the resolver to register
508 * @user_data: data passed to the resolver function
509 * @user_data_destroy: destroy function for @user_data
511 * Lets the app register a custom function to map index
512 * ids to writer descriptions.
516 gst_index_set_resolver_full (GstIndex * index, GstIndexResolver resolver,
517 gpointer user_data, GDestroyNotify user_data_destroy)
519 g_return_if_fail (GST_IS_INDEX (index));
521 if (index->resolver_user_data && index->resolver_user_data_destroy)
522 index->resolver_user_data_destroy (index->resolver_user_data);
524 index->resolver = resolver;
525 index->resolver_user_data = user_data;
526 index->resolver_user_data_destroy = user_data_destroy;
527 index->method = GST_INDEX_RESOLVER_CUSTOM;
532 * gst_index_entry_copy:
533 * @entry: the entry to copy
535 * Copies an entry and returns the result.
537 * Free-function: gst_index_entry_free
539 * Returns: (transfer full): a newly allocated #GstIndexEntry.
542 gst_index_entry_copy (GstIndexEntry * entry)
544 GstIndexEntry *new_entry = g_slice_new (GstIndexEntry);
546 memcpy (new_entry, entry, sizeof (GstIndexEntry));
551 * gst_index_entry_free:
552 * @entry: (transfer full): the entry to free
554 * Free the memory used by the given entry.
557 gst_index_entry_free (GstIndexEntry * entry)
559 switch (entry->type) {
560 case GST_INDEX_ENTRY_ID:
561 if (entry->data.id.description) {
562 g_free (entry->data.id.description);
563 entry->data.id.description = NULL;
566 case GST_INDEX_ENTRY_ASSOCIATION:
567 if (entry->data.assoc.assocs) {
568 g_free (entry->data.assoc.assocs);
569 entry->data.assoc.assocs = NULL;
572 case GST_INDEX_ENTRY_OBJECT:
574 case GST_INDEX_ENTRY_FORMAT:
578 g_slice_free (GstIndexEntry, entry);
583 * gst_index_add_format:
584 * @index: the index to add the entry to
585 * @id: the id of the index writer
586 * @format: the format to add to the index
588 * Adds a format entry into the index. This function is
589 * used to map dynamic GstFormat ids to their original
592 * Free-function: gst_index_entry_free
594 * Returns: (transfer full): a pointer to the newly added entry in the index.
597 gst_index_add_format (GstIndex * index, gint id, GstFormat format)
599 GstIndexEntry *entry;
600 const GstFormatDefinition *def;
602 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
603 g_return_val_if_fail (format != 0, NULL);
605 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
608 entry = g_slice_new (GstIndexEntry);
609 entry->type = GST_INDEX_ENTRY_FORMAT;
611 entry->data.format.format = format;
613 def = gst_format_get_details (format);
614 entry->data.format.key = def->nick;
616 gst_index_add_entry (index, entry);
624 * @index: the index to add the entry to
625 * @id: the id of the index writer
626 * @description: the description of the index writer
628 * Add an id entry into the index.
630 * Returns: a pointer to the newly added entry in the index.
633 gst_index_add_id (GstIndex * index, gint id, gchar * description)
635 GstIndexEntry *entry;
637 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
638 g_return_val_if_fail (description != NULL, NULL);
640 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
643 entry = g_slice_new (GstIndexEntry);
644 entry->type = GST_INDEX_ENTRY_ID;
646 entry->data.id.description = description;
648 gst_index_add_entry (index, entry);
654 gst_index_path_resolver (GstIndex * index, GstObject * writer,
655 gchar ** writer_string, gpointer data)
657 *writer_string = gst_object_get_path_string (writer);
663 gst_index_gtype_resolver (GstIndex * index, GstObject * writer,
664 gchar ** writer_string, gpointer data)
666 g_return_val_if_fail (writer != NULL, FALSE);
668 if (GST_IS_PAD (writer)) {
669 GstObject *element = gst_object_get_parent (GST_OBJECT (writer));
672 name = gst_object_get_name (writer);
674 *writer_string = g_strdup_printf ("%s.%s",
675 G_OBJECT_TYPE_NAME (element), name);
676 gst_object_unref (element);
678 *writer_string = name;
685 *writer_string = g_strdup (G_OBJECT_TYPE_NAME (writer));
692 * gst_index_get_writer_id:
693 * @index: the index to get a unique write id for
694 * @writer: the GstObject to allocate an id for
695 * @id: a pointer to a gint to hold the id
697 * Before entries can be added to the index, a writer
698 * should obtain a unique id. The methods to add new entries
699 * to the index require this id as an argument.
701 * The application can implement a custom function to map the writer object
702 * to a string. That string will be used to register or look up an id
706 * The caller must not hold @writer's #GST_OBJECT_LOCK, as the default
707 * resolver may call functions that take the object lock as well, and
708 * the lock is not recursive.
711 * Returns: TRUE if the writer would be mapped to an id.
714 gst_index_get_writer_id (GstIndex * index, GstObject * writer, gint * id)
716 gchar *writer_string = NULL;
717 GstIndexEntry *entry;
718 GstIndexClass *iclass;
719 gboolean success = FALSE;
721 g_return_val_if_fail (GST_IS_INDEX (index), FALSE);
722 g_return_val_if_fail (GST_IS_OBJECT (writer), FALSE);
723 g_return_val_if_fail (id, FALSE);
727 /* first try to get a previously cached id */
728 entry = g_hash_table_lookup (index->writers, writer);
731 iclass = GST_INDEX_GET_CLASS (index);
733 /* let the app make a string */
734 if (index->resolver) {
738 index->resolver (index, writer, &writer_string,
739 index->resolver_user_data);
743 g_warning ("no resolver found");
747 /* if the index has a resolver, make it map this string to an id */
748 if (iclass->get_writer_id) {
749 success = iclass->get_writer_id (index, id, writer_string);
751 /* if the index could not resolve, we allocate one ourselves */
753 *id = ++index->last_id;
756 entry = gst_index_add_id (index, *id, writer_string);
758 /* index is probably not writable, make an entry anyway
759 * to keep it in our cache */
760 entry = g_slice_new (GstIndexEntry);
761 entry->type = GST_INDEX_ENTRY_ID;
763 entry->data.id.description = writer_string;
765 g_hash_table_insert (index->writers, writer, entry);
774 gst_index_add_entry (GstIndex * index, GstIndexEntry * entry)
776 GstIndexClass *iclass;
778 iclass = GST_INDEX_GET_CLASS (index);
780 if (iclass->add_entry) {
781 iclass->add_entry (index, entry);
784 g_signal_emit (index, gst_index_signals[ENTRY_ADDED], 0, entry);
788 * gst_index_add_associationv:
789 * @index: the index to add the entry to
790 * @id: the id of the index writer
791 * @flags: optinal flags for this entry
792 * @n: number of associations
793 * @list: list of associations
795 * Associate given format/value pairs with each other.
797 * Returns: a pointer to the newly added entry in the index.
800 gst_index_add_associationv (GstIndex * index, gint id,
801 GstIndexAssociationFlags flags, gint n, const GstIndexAssociation * list)
803 GstIndexEntry *entry;
805 g_return_val_if_fail (n > 0, NULL);
806 g_return_val_if_fail (list != NULL, NULL);
807 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
809 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
812 entry = g_slice_new (GstIndexEntry);
814 entry->type = GST_INDEX_ENTRY_ASSOCIATION;
816 entry->data.assoc.flags = flags;
817 entry->data.assoc.assocs = g_memdup (list, sizeof (GstIndexAssociation) * n);
818 entry->data.assoc.nassocs = n;
820 gst_index_add_entry (index, entry);
827 * gst_index_add_association:
828 * @index: the index to add the entry to
829 * @id: the id of the index writer
830 * @flags: optinal flags for this entry
831 * @format: the format of the value
833 * @...: other format/value pairs or 0 to end the list
835 * Associate given format/value pairs with each other.
836 * Be sure to pass gint64 values to this functions varargs,
837 * you might want to use a gint64 cast to be sure.
839 * Returns: a pointer to the newly added entry in the index.
842 gst_index_add_association (GstIndex * index, gint id,
843 GstIndexAssociationFlags flags, GstFormat format, gint64 value, ...)
846 GstIndexEntry *entry;
847 GstIndexAssociation *list;
849 GstFormat cur_format;
852 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
853 g_return_val_if_fail (format != 0, NULL);
855 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
858 array = g_array_new (FALSE, FALSE, sizeof (GstIndexAssociation));
861 GstIndexAssociation a;
866 g_array_append_val (array, a);
869 va_start (args, value);
871 while ((cur_format = va_arg (args, GstFormat))) {
872 GstIndexAssociation a;
874 a.format = cur_format;
875 a.value = va_arg (args, gint64);
877 g_array_append_val (array, a);
882 list = (GstIndexAssociation *) g_array_free (array, FALSE);
884 entry = gst_index_add_associationv (index, id, flags, n_assocs, list);
891 * gst_index_add_object:
892 * @index: the index to add the object to
893 * @id: the id of the index writer
894 * @key: a key for the object
895 * @type: the GType of the object
896 * @object: a pointer to the object to add
898 * Add the given object to the index with the given key.
900 * This function is not yet implemented.
902 * Returns: a pointer to the newly added entry in the index.
905 gst_index_add_object (GstIndex * index, gint id, gchar * key,
906 GType type, gpointer object)
908 if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
916 gst_index_compare_func (gconstpointer a, gconstpointer b, gpointer user_data)
926 * gst_index_get_assoc_entry:
927 * @index: the index to search
928 * @id: the id of the index writer
929 * @method: The lookup method to use
930 * @flags: Flags for the entry
931 * @format: the format of the value
932 * @value: the value to find
934 * Finds the given format/value in the index
936 * Returns: the entry associated with the value or NULL if the
937 * value was not found.
940 gst_index_get_assoc_entry (GstIndex * index, gint id,
941 GstIndexLookupMethod method, GstIndexAssociationFlags flags,
942 GstFormat format, gint64 value)
944 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
949 return gst_index_get_assoc_entry_full (index, id, method, flags, format,
950 value, gst_index_compare_func, NULL);
954 * gst_index_get_assoc_entry_full:
955 * @index: the index to search
956 * @id: the id of the index writer
957 * @method: The lookup method to use
958 * @flags: Flags for the entry
959 * @format: the format of the value
960 * @value: the value to find
961 * @func: the function used to compare entries
962 * @user_data: user data passed to the compare function
964 * Finds the given format/value in the index with the given
965 * compare function and user_data.
967 * Returns: the entry associated with the value or NULL if the
968 * value was not found.
971 gst_index_get_assoc_entry_full (GstIndex * index, gint id,
972 GstIndexLookupMethod method, GstIndexAssociationFlags flags,
973 GstFormat format, gint64 value, GCompareDataFunc func, gpointer user_data)
975 GstIndexClass *iclass;
977 g_return_val_if_fail (GST_IS_INDEX (index), NULL);
982 iclass = GST_INDEX_GET_CLASS (index);
984 if (iclass->get_assoc_entry)
985 return iclass->get_assoc_entry (index, id, method, flags, format, value,
992 * gst_index_entry_assoc_map:
993 * @entry: the index to search
994 * @format: the format of the value the find
995 * @value: a pointer to store the value
997 * Gets alternative formats associated with the indexentry.
999 * Returns: TRUE if there was a value associated with the given
1003 gst_index_entry_assoc_map (GstIndexEntry * entry,
1004 GstFormat format, gint64 * value)
1008 g_return_val_if_fail (entry != NULL, FALSE);
1009 g_return_val_if_fail (value != NULL, FALSE);
1011 for (i = 0; i < GST_INDEX_NASSOCS (entry); i++) {
1012 if (GST_INDEX_ASSOC_FORMAT (entry, i) == format) {
1013 *value = GST_INDEX_ASSOC_VALUE (entry, i);