--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gstreamer_core/gst/gstindex.c	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,1072 @@
+/* GStreamer
+ * Copyright (C) 2001 RidgeRun (http://www.ridgerun.com/)
+ * Written by Erik Walthinsen <omega@ridgerun.com>
+ *
+ * gstindex.c: Index for mappings and other data
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:gstindex
+ * @short_description: Generate indexes on objects
+ * @see_also: #GstIndexFactory
+ *
+ * GstIndex is used to generate a stream index of one or more elements
+ * in a pipeline.
+ */
+
+#include "gst_private.h"
+
+#include "gstinfo.h"
+#include "gstindex.h"
+#include "gstindexfactory.h"
+#include "gstmarshal.h"
+#include "gstregistry.h"
+/* for constructing an entry name */
+#include "gstelement.h"
+#include "gstpad.h"
+
+/* Index signals and args */
+enum
+{
+  ENTRY_ADDED,
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+  ARG_RESOLVER
+      /* FILL ME */
+};
+
+static void gst_index_class_init (GstIndexClass * klass);
+static void gst_index_init (GstIndex * index);
+static void gst_index_finalize (GObject * object);
+
+static void gst_index_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_index_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static GstIndexGroup *gst_index_group_new (guint groupnum);
+
+static gboolean gst_index_path_resolver (GstIndex * index, GstObject * writer,
+    gchar ** writer_string, gpointer data);
+static gboolean gst_index_gtype_resolver (GstIndex * index, GstObject * writer,
+    gchar ** writer_string, gpointer data);
+static void gst_index_add_entry (GstIndex * index, GstIndexEntry * entry);
+
+static GstObject *parent_class = NULL;
+static guint gst_index_signals[LAST_SIGNAL] = { 0 };
+
+typedef struct
+{
+  GstIndexResolverMethod method;
+  GstIndexResolver resolver;
+  gpointer user_data;
+}
+ResolverEntry;
+
+static const ResolverEntry resolvers[] = {
+  {GST_INDEX_RESOLVER_CUSTOM, NULL, NULL},
+  {GST_INDEX_RESOLVER_GTYPE, gst_index_gtype_resolver, NULL},
+  {GST_INDEX_RESOLVER_PATH, gst_index_path_resolver, NULL},
+};
+
+#define GST_TYPE_INDEX_RESOLVER (gst_index_resolver_get_type())
+static GType
+gst_index_resolver_get_type (void)
+{
+  static GType index_resolver_type = 0;
+  static const GEnumValue index_resolver[] = {
+    {GST_INDEX_RESOLVER_CUSTOM, "GST_INDEX_RESOLVER_CUSTOM",
+        "Use a custom resolver"},
+    {GST_INDEX_RESOLVER_GTYPE, "GST_INDEX_RESOLVER_GTYPE",
+        "Resolve an object to its GType[.padname]"},
+    {GST_INDEX_RESOLVER_PATH, "GST_INDEX_RESOLVER_PATH",
+        "Resolve an object to its path in the pipeline"},
+    {0, NULL, NULL},
+  };
+
+  if (!index_resolver_type) {
+    index_resolver_type =
+        g_enum_register_static ("GstIndexResolver", index_resolver);
+  }
+  return index_resolver_type;
+}
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+
+GType
+gst_index_entry_get_type (void)
+{
+  static GType index_entry_type = 0;
+
+  if (!index_entry_type) {
+    index_entry_type = g_boxed_type_register_static ("GstIndexEntry",
+        (GBoxedCopyFunc) gst_index_entry_copy,
+        (GBoxedFreeFunc) gst_index_entry_free);
+  }
+  return index_entry_type;
+}
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+
+
+GType
+gst_index_get_type (void)
+{
+  static GType index_type = 0;
+
+  if (!index_type) {
+    static const GTypeInfo index_info = {
+      sizeof (GstIndexClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_index_class_init,
+      NULL,
+      NULL,
+      sizeof (GstIndex),
+      0,
+      (GInstanceInitFunc) gst_index_init,
+      NULL
+    };
+
+    index_type =
+        g_type_register_static (GST_TYPE_OBJECT, "GstIndex", &index_info, 0);
+  }
+  return index_type;
+}
+
+static void
+gst_index_class_init (GstIndexClass * klass)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = G_OBJECT_CLASS (klass);
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  /**
+   * GstIndex::entry-added
+   * @gstindex: the object which received the signal.
+   * @arg1: The entry added to the index.
+   *
+   * Is emitted when a new entry is added to the index.
+   */
+  gst_index_signals[ENTRY_ADDED] =
+      g_signal_new ("entry-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+      G_STRUCT_OFFSET (GstIndexClass, entry_added), NULL, NULL,
+      gst_marshal_VOID__BOXED, G_TYPE_NONE, 1, GST_TYPE_INDEX_ENTRY);
+
+  gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_index_set_property);
+  gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_index_get_property);
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_index_finalize);
+
+  g_object_class_install_property (gobject_class, ARG_RESOLVER,
+      g_param_spec_enum ("resolver", "Resolver",
+          "Select a predefined object to string mapper",
+          GST_TYPE_INDEX_RESOLVER, GST_INDEX_RESOLVER_PATH, G_PARAM_READWRITE));
+}
+
+static void
+gst_index_init (GstIndex * index)
+{
+  index->curgroup = gst_index_group_new (0);
+  index->maxgroup = 0;
+  index->groups = g_list_prepend (NULL, index->curgroup);
+
+  index->writers = g_hash_table_new (NULL, NULL);
+  index->last_id = 0;
+
+  index->method = GST_INDEX_RESOLVER_PATH;
+  index->resolver = resolvers[index->method].resolver;
+  index->resolver_user_data = resolvers[index->method].user_data;
+
+  GST_OBJECT_FLAG_SET (index, GST_INDEX_WRITABLE);
+  GST_OBJECT_FLAG_SET (index, GST_INDEX_READABLE);
+
+  GST_DEBUG ("created new index");
+}
+
+static void
+gst_index_free_writer (gpointer key, gpointer value, gpointer user_data)
+{
+  GstIndexEntry *entry = (GstIndexEntry *) value;
+
+  if (entry) {
+    gst_index_entry_free (entry);
+  }
+}
+
+static void
+gst_index_finalize (GObject * object)
+{
+  GstIndex *index = GST_INDEX (object);
+
+  if (index->groups) {
+    g_list_foreach (index->groups, (GFunc) g_free, NULL);
+    g_list_free (index->groups);
+    index->groups = NULL;
+  }
+
+  if (index->writers) {
+    g_hash_table_foreach (index->writers, gst_index_free_writer, NULL);
+    g_hash_table_destroy (index->writers);
+    index->writers = NULL;
+  }
+
+  if (index->filter_user_data && index->filter_user_data_destroy)
+    index->filter_user_data_destroy (index->filter_user_data);
+
+  if (index->resolver_user_data && index->resolver_user_data_destroy)
+    index->resolver_user_data_destroy (index->resolver_user_data);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_index_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstIndex *index;
+
+  index = GST_INDEX (object);
+
+  switch (prop_id) {
+    case ARG_RESOLVER:
+      index->method = g_value_get_enum (value);
+      index->resolver = resolvers[index->method].resolver;
+      index->resolver_user_data = resolvers[index->method].user_data;
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_index_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstIndex *index;
+
+  index = GST_INDEX (object);
+
+  switch (prop_id) {
+    case ARG_RESOLVER:
+      g_value_set_enum (value, index->method);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstIndexGroup *
+gst_index_group_new (guint groupnum)
+{
+  GstIndexGroup *indexgroup = g_new (GstIndexGroup, 1);
+
+  indexgroup->groupnum = groupnum;
+  indexgroup->entries = NULL;
+  indexgroup->certainty = GST_INDEX_UNKNOWN;
+  indexgroup->peergroup = -1;
+
+  GST_DEBUG ("created new index group %d", groupnum);
+
+  return indexgroup;
+}
+
+/**
+ * gst_index_new:
+ *
+ * Create a new tileindex object
+ *
+ * Returns: a new index object
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndex *
+gst_index_new (void)
+{
+  GstIndex *index;
+
+  index = g_object_new (gst_index_get_type (), NULL);
+
+  return index;
+}
+
+/**
+ * gst_index_commit:
+ * @index: the index to commit
+ * @id: the writer that commited the index
+ *
+ * Tell the index that the writer with the given id is done
+ * with this index and is not going to write any more entries
+ * to it.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_commit (GstIndex * index, gint id)
+{
+  GstIndexClass *iclass;
+
+  iclass = GST_INDEX_GET_CLASS (index);
+
+  if (iclass->commit)
+    iclass->commit (index, id);
+}
+
+
+/**
+ * gst_index_get_group:
+ * @index: the index to get the current group from
+ *
+ * Get the id of the current group.
+ *
+ * Returns: the id of the current group.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gint
+gst_index_get_group (GstIndex * index)
+{
+  return index->curgroup->groupnum;
+}
+
+/**
+ * gst_index_new_group:
+ * @index: the index to create the new group in
+ *
+ * Create a new group for the given index. It will be
+ * set as the current group.
+ *
+ * Returns: the id of the newly created group.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gint
+gst_index_new_group (GstIndex * index)
+{
+  index->curgroup = gst_index_group_new (++index->maxgroup);
+  index->groups = g_list_append (index->groups, index->curgroup);
+  GST_DEBUG ("created new group %d in index", index->maxgroup);
+  return index->maxgroup;
+}
+
+/**
+ * gst_index_set_group:
+ * @index: the index to set the new group in
+ * @groupnum: the groupnumber to set
+ *
+ * Set the current groupnumber to the given argument.
+ *
+ * Returns: TRUE if the operation succeeded, FALSE if the group
+ * did not exist.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gboolean
+gst_index_set_group (GstIndex * index, gint groupnum)
+{
+  GList *list;
+  GstIndexGroup *indexgroup;
+
+  /* first check for null change */
+  if (groupnum == index->curgroup->groupnum)
+    return TRUE;
+
+  /* else search for the proper group */
+  list = index->groups;
+  while (list) {
+    indexgroup = (GstIndexGroup *) (list->data);
+    list = g_list_next (list);
+    if (indexgroup->groupnum == groupnum) {
+      index->curgroup = indexgroup;
+      GST_DEBUG ("switched to index group %d", indexgroup->groupnum);
+      return TRUE;
+    }
+  }
+
+  /* couldn't find the group in question */
+  GST_DEBUG ("couldn't find index group %d", groupnum);
+  return FALSE;
+}
+
+/**
+ * gst_index_set_certainty:
+ * @index: the index to set the certainty on
+ * @certainty: the certainty to set
+ *
+ * Set the certainty of the given index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_set_certainty (GstIndex * index, GstIndexCertainty certainty)
+{
+  index->curgroup->certainty = certainty;
+}
+
+/**
+ * gst_index_get_certainty:
+ * @index: the index to get the certainty of
+ *
+ * Get the certainty of the given index.
+ *
+ * Returns: the certainty of the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexCertainty
+gst_index_get_certainty (GstIndex * index)
+{
+  return index->curgroup->certainty;
+}
+
+/**
+ * gst_index_set_filter:
+ * @index: the index to register the filter on
+ * @filter: the filter to register
+ * @user_data: data passed to the filter function
+ *
+ * Lets the app register a custom filter function so that
+ * it can select what entries should be stored in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_set_filter (GstIndex * index,
+    GstIndexFilter filter, gpointer user_data)
+{
+  g_return_if_fail (GST_IS_INDEX (index));
+
+  gst_index_set_filter_full (index, filter, user_data, NULL);
+}
+
+/**
+ * gst_index_set_filter_full:
+ * @index: the index to register the filter on
+ * @filter: the filter to register
+ * @user_data: data passed to the filter function
+ * @user_data_destroy: function to call when @user_data is unset
+ *
+ * Lets the app register a custom filter function so that
+ * it can select what entries should be stored in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_set_filter_full (GstIndex * index,
+    GstIndexFilter filter, gpointer user_data, GDestroyNotify user_data_destroy)
+{
+  g_return_if_fail (GST_IS_INDEX (index));
+
+  if (index->filter_user_data && index->filter_user_data_destroy)
+    index->filter_user_data_destroy (index->filter_user_data);
+
+  index->filter = filter;
+  index->filter_user_data = user_data;
+  index->filter_user_data_destroy = user_data_destroy;
+}
+
+/**
+ * gst_index_set_resolver:
+ * @index: the index to register the resolver on
+ * @resolver: the resolver to register
+ * @user_data: data passed to the resolver function
+ *
+ * Lets the app register a custom function to map index
+ * ids to writer descriptions.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_set_resolver (GstIndex * index,
+    GstIndexResolver resolver, gpointer user_data)
+{
+  gst_index_set_resolver_full (index, resolver, user_data, NULL);
+}
+
+/**
+ * gst_index_set_resolver_full:
+ * @index: the index to register the resolver on
+ * @resolver: the resolver to register
+ * @user_data: data passed to the resolver function
+ * @user_data_destroy: destroy function for @user_data
+ *
+ * Lets the app register a custom function to map index
+ * ids to writer descriptions.
+ *
+ * Since: 0.10.18
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_set_resolver_full (GstIndex * index, GstIndexResolver resolver,
+    gpointer user_data, GDestroyNotify user_data_destroy)
+{
+  g_return_if_fail (GST_IS_INDEX (index));
+
+  if (index->resolver_user_data && index->resolver_user_data_destroy)
+    index->resolver_user_data_destroy (index->resolver_user_data);
+
+  index->resolver = resolver;
+  index->resolver_user_data = user_data;
+  index->resolver_user_data_destroy = user_data_destroy;
+  index->method = GST_INDEX_RESOLVER_CUSTOM;
+}
+
+/**
+ * gst_index_entry_copy:
+ * @entry: the entry to copy
+ *
+ * Copies an entry and returns the result.
+ *
+ * Returns: a newly allocated #GstIndexEntry.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_entry_copy (GstIndexEntry * entry)
+{
+  return g_memdup (entry, sizeof (*entry));
+}
+
+/**
+ * gst_index_entry_free:
+ * @entry: the entry to free
+ *
+ * Free the memory used by the given entry.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+void
+gst_index_entry_free (GstIndexEntry * entry)
+{
+  switch (entry->type) {
+    case GST_INDEX_ENTRY_ID:
+      if (entry->data.id.description) {
+        g_free (entry->data.id.description);
+        entry->data.id.description = NULL;
+      }
+      break;
+    case GST_INDEX_ENTRY_ASSOCIATION:
+      if (entry->data.assoc.assocs) {
+        g_free (entry->data.assoc.assocs);
+        entry->data.assoc.assocs = NULL;
+      }
+      break;
+    case GST_INDEX_ENTRY_OBJECT:
+      break;
+    case GST_INDEX_ENTRY_FORMAT:
+      break;
+  }
+
+  g_free (entry);
+}
+
+/**
+ * gst_index_add_format:
+ * @index: the index to add the entry to
+ * @id: the id of the index writer
+ * @format: the format to add to the index
+ *
+ * Adds a format entry into the index. This function is
+ * used to map dynamic GstFormat ids to their original
+ * format key.
+ *
+ * Returns: a pointer to the newly added entry in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_add_format (GstIndex * index, gint id, GstFormat format)
+{
+  GstIndexEntry *entry;
+  const GstFormatDefinition *def;
+
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+  g_return_val_if_fail (format != 0, NULL);
+
+  if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
+    return NULL;
+
+  entry = g_new0 (GstIndexEntry, 1);
+  entry->type = GST_INDEX_ENTRY_FORMAT;
+  entry->id = id;
+  entry->data.format.format = format;
+
+  def = gst_format_get_details (format);
+  entry->data.format.key = def->nick;
+
+  gst_index_add_entry (index, entry);
+
+  return entry;
+}
+
+/**
+ * gst_index_add_id:
+ * @index: the index to add the entry to
+ * @id: the id of the index writer
+ * @description: the description of the index writer
+ *
+ * Add an id entry into the index.
+ *
+ * Returns: a pointer to the newly added entry in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_add_id (GstIndex * index, gint id, gchar * description)
+{
+  GstIndexEntry *entry;
+
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+  g_return_val_if_fail (description != NULL, NULL);
+
+  if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
+    return NULL;
+
+  entry = g_new0 (GstIndexEntry, 1);
+  entry->type = GST_INDEX_ENTRY_ID;
+  entry->id = id;
+  entry->data.id.description = description;
+
+  gst_index_add_entry (index, entry);
+
+  return entry;
+}
+
+static gboolean
+gst_index_path_resolver (GstIndex * index, GstObject * writer,
+    gchar ** writer_string, gpointer data)
+{
+  *writer_string = gst_object_get_path_string (writer);
+
+  return TRUE;
+}
+
+static gboolean
+gst_index_gtype_resolver (GstIndex * index, GstObject * writer,
+    gchar ** writer_string, gpointer data)
+{
+  if (GST_IS_PAD (writer)) {
+    GstElement *element =
+        (GstElement *) gst_object_get_parent (GST_OBJECT (writer));
+    gchar *name;
+
+    name = gst_object_get_name (writer);
+    *writer_string = g_strdup_printf ("%s.%s",
+        g_type_name (G_OBJECT_TYPE (element)), name);
+
+    gst_object_unref (element);
+    g_free (name);
+
+  } else {
+    *writer_string =
+        g_strdup_printf ("%s", g_type_name (G_OBJECT_TYPE (writer)));
+  }
+
+  return TRUE;
+}
+
+/**
+ * gst_index_get_writer_id:
+ * @index: the index to get a unique write id for
+ * @writer: the GstObject to allocate an id for
+ * @id: a pointer to a gint to hold the id
+ *
+ * Before entries can be added to the index, a writer
+ * should obtain a unique id. The methods to add new entries
+ * to the index require this id as an argument.
+ *
+ * The application can implement a custom function to map the writer object
+ * to a string. That string will be used to register or look up an id
+ * in the index.
+ *
+ * Returns: TRUE if the writer would be mapped to an id.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gboolean
+gst_index_get_writer_id (GstIndex * index, GstObject * writer, gint * id)
+{
+  gchar *writer_string = NULL;
+  GstIndexEntry *entry;
+  GstIndexClass *iclass;
+  gboolean success = FALSE;
+
+  g_return_val_if_fail (GST_IS_INDEX (index), FALSE);
+  g_return_val_if_fail (GST_IS_OBJECT (writer), FALSE);
+  g_return_val_if_fail (id, FALSE);
+
+  *id = -1;
+
+  /* first try to get a previously cached id */
+  entry = g_hash_table_lookup (index->writers, writer);
+  if (entry == NULL) {
+
+    iclass = GST_INDEX_GET_CLASS (index);
+
+    /* let the app make a string */
+    if (index->resolver) {
+      gboolean res;
+
+      res =
+          index->resolver (index, writer, &writer_string,
+          index->resolver_user_data);
+      if (!res)
+        return FALSE;
+    } else {
+      g_warning ("no resolver found");
+      return FALSE;
+    }
+
+    /* if the index has a resolver, make it map this string to an id */
+    if (iclass->get_writer_id) {
+      success = iclass->get_writer_id (index, id, writer_string);
+    }
+    /* if the index could not resolve, we allocate one ourselves */
+    if (!success) {
+      *id = ++index->last_id;
+    }
+
+    entry = gst_index_add_id (index, *id, writer_string);
+    if (!entry) {
+      /* index is probably not writable, make an entry anyway
+       * to keep it in our cache */
+      entry = g_new0 (GstIndexEntry, 1);
+      entry->type = GST_INDEX_ENTRY_ID;
+      entry->id = *id;
+      entry->data.id.description = writer_string;
+    }
+    g_hash_table_insert (index->writers, writer, entry);
+  } else {
+    *id = entry->id;
+  }
+
+  return TRUE;
+}
+
+static void
+gst_index_add_entry (GstIndex * index, GstIndexEntry * entry)
+{
+  GstIndexClass *iclass;
+
+  iclass = GST_INDEX_GET_CLASS (index);
+
+  if (iclass->add_entry) {
+    iclass->add_entry (index, entry);
+  }
+
+  g_signal_emit (G_OBJECT (index), gst_index_signals[ENTRY_ADDED], 0, entry);
+}
+
+/**
+ * gst_index_add_associationv:
+ * @index: the index to add the entry to
+ * @id: the id of the index writer
+ * @flags: optinal flags for this entry
+ * @n: number of associations
+ * @list: list of associations
+ *
+ * Associate given format/value pairs with each other.
+ *
+ * Returns: a pointer to the newly added entry in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_add_associationv (GstIndex * index, gint id, GstAssocFlags flags,
+    gint n, const GstIndexAssociation * list)
+{
+  GstIndexEntry *entry;
+
+  g_return_val_if_fail (n > 0, NULL);
+  g_return_val_if_fail (list != NULL, NULL);
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+
+  if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
+    return NULL;
+
+  entry = g_malloc (sizeof (GstIndexEntry));
+
+  entry->type = GST_INDEX_ENTRY_ASSOCIATION;
+  entry->id = id;
+  entry->data.assoc.flags = flags;
+  entry->data.assoc.assocs = g_memdup (list, sizeof (GstIndexAssociation) * n);
+  entry->data.assoc.nassocs = n;
+
+  gst_index_add_entry (index, entry);
+
+  return entry;
+}
+
+/**
+ * gst_index_add_association:
+ * @index: the index to add the entry to
+ * @id: the id of the index writer
+ * @flags: optinal flags for this entry
+ * @format: the format of the value
+ * @value: the value
+ * @...: other format/value pairs or 0 to end the list
+ *
+ * Associate given format/value pairs with each other.
+ * Be sure to pass gint64 values to this functions varargs,
+ * you might want to use a gint64 cast to be sure.
+ *
+ * Returns: a pointer to the newly added entry in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_add_association (GstIndex * index, gint id, GstAssocFlags flags,
+    GstFormat format, gint64 value, ...)
+{
+  va_list args;
+  GstIndexEntry *entry;
+  GstIndexAssociation *list;
+  gint n_assocs = 0;
+  GstFormat cur_format;
+  GArray *array;
+
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+  g_return_val_if_fail (format != 0, NULL);
+
+  if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
+    return NULL;
+
+  array = g_array_new (FALSE, FALSE, sizeof (GstIndexAssociation));
+
+  {
+    GstIndexAssociation a;
+
+    a.format = format;
+    a.value = value;
+    n_assocs = 1;
+    g_array_append_val (array, a);
+  }
+
+  va_start (args, value);
+
+  while ((cur_format = va_arg (args, GstFormat))) {
+    GstIndexAssociation a;
+
+    a.format = cur_format;
+    a.value = va_arg (args, gint64);
+    n_assocs++;
+    g_array_append_val (array, a);
+  }
+
+  va_end (args);
+
+  list = (GstIndexAssociation *) g_array_free (array, FALSE);
+
+  entry = gst_index_add_associationv (index, id, flags, n_assocs, list);
+  g_free (list);
+
+  return entry;
+}
+
+/**
+ * gst_index_add_object:
+ * @index: the index to add the object to
+ * @id: the id of the index writer
+ * @key: a key for the object
+ * @type: the GType of the object
+ * @object: a pointer to the object to add
+ *
+ * Add the given object to the index with the given key.
+ *
+ * This function is not yet implemented.
+ *
+ * Returns: a pointer to the newly added entry in the index.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_add_object (GstIndex * index, gint id, gchar * key,
+    GType type, gpointer object)
+{
+  if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
+    return NULL;
+
+  return NULL;
+}
+
+static gint
+gst_index_compare_func (gconstpointer a, gconstpointer b, gpointer user_data)
+{
+  if (a < b)
+    return -1;
+  if (a > b)
+    return 1;
+  return 0;
+}
+
+/**
+ * gst_index_get_assoc_entry:
+ * @index: the index to search
+ * @id: the id of the index writer
+ * @method: The lookup method to use
+ * @flags: Flags for the entry
+ * @format: the format of the value
+ * @value: the value to find
+ *
+ * Finds the given format/value in the index
+ *
+ * Returns: the entry associated with the value or NULL if the
+ *   value was not found.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_get_assoc_entry (GstIndex * index, gint id,
+    GstIndexLookupMethod method, GstAssocFlags flags,
+    GstFormat format, gint64 value)
+{
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+
+  if (id == -1)
+    return NULL;
+
+  return gst_index_get_assoc_entry_full (index, id, method, flags, format,
+      value, gst_index_compare_func, NULL);
+}
+
+/**
+ * gst_index_get_assoc_entry_full:
+ * @index: the index to search
+ * @id: the id of the index writer
+ * @method: The lookup method to use
+ * @flags: Flags for the entry
+ * @format: the format of the value
+ * @value: the value to find
+ * @func: the function used to compare entries
+ * @user_data: user data passed to the compare function
+ *
+ * Finds the given format/value in the index with the given
+ * compare function and user_data.
+ *
+ * Returns: the entry associated with the value or NULL if the
+ *   value was not found.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstIndexEntry *
+gst_index_get_assoc_entry_full (GstIndex * index, gint id,
+    GstIndexLookupMethod method, GstAssocFlags flags,
+    GstFormat format, gint64 value, GCompareDataFunc func, gpointer user_data)
+{
+  GstIndexClass *iclass;
+
+  g_return_val_if_fail (GST_IS_INDEX (index), NULL);
+
+  if (id == -1)
+    return NULL;
+
+  iclass = GST_INDEX_GET_CLASS (index);
+
+  if (iclass->get_assoc_entry)
+    return iclass->get_assoc_entry (index, id, method, flags, format, value,
+        func, user_data);
+
+  return NULL;
+}
+
+/**
+ * gst_index_entry_assoc_map:
+ * @entry: the index to search
+ * @format: the format of the value the find
+ * @value: a pointer to store the value
+ *
+ * Gets alternative formats associated with the indexentry.
+ *
+ * Returns: TRUE if there was a value associated with the given
+ * format.
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gboolean
+gst_index_entry_assoc_map (GstIndexEntry * entry,
+    GstFormat format, gint64 * value)
+{
+  gint i;
+
+  g_return_val_if_fail (entry != NULL, FALSE);
+  g_return_val_if_fail (value != NULL, FALSE);
+
+  for (i = 0; i < GST_INDEX_NASSOCS (entry); i++) {
+    if (GST_INDEX_ASSOC_FORMAT (entry, i) == format) {
+      *value = GST_INDEX_ASSOC_VALUE (entry, i);
+      return TRUE;
+    }
+  }
+  return FALSE;
+}