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gst/: Make ChildProxy threadsafe and fix mem leaks.
Original commit message from CVS: * gst/gstbin.c: (gst_bin_child_proxy_get_child_by_index), (gst_bin_child_proxy_get_children_count): * gst/gstchildproxy.c: (gst_child_proxy_get_child_by_name), (gst_child_proxy_lookup), (gst_child_proxy_get_property), (gst_child_proxy_get_valist), (gst_child_proxy_set_property), (gst_child_proxy_set_valist): * gst/parse/grammar.y: Make ChildProxy threadsafe and fix mem leaks.
This commit is contained in:
Wim Taymans
parent
9e539e0202
commit
65006292ce
4 changed files with 104 additions and 32 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2005-10-08 Wim Taymans <wim@fluendo.com>
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* gst/gstbin.c: (gst_bin_child_proxy_get_child_by_index),
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(gst_bin_child_proxy_get_children_count):
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* gst/gstchildproxy.c: (gst_child_proxy_get_child_by_name),
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(gst_child_proxy_lookup), (gst_child_proxy_get_property),
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(gst_child_proxy_get_valist), (gst_child_proxy_set_property),
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(gst_child_proxy_set_valist):
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* gst/parse/grammar.y:
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Make ChildProxy threadsafe and fix mem leaks.
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2005-10-08 Thomas Vander Stichele <thomas at apestaart dot org>
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* gst/gst.c: (init_post):
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27
gst/gstbin.c
27
gst/gstbin.c
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@ -112,7 +112,7 @@ static void gst_bin_restore_thyself (GstObject * object, xmlNodePtr self);
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static gint bin_element_is_sink (GstElement * child, GstBin * bin);
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/* Bin signals and args */
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/* Bin signals and properties */
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enum
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{
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ELEMENT_ADDED,
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@ -122,7 +122,7 @@ enum
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enum
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{
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ARG_0
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PROP_0
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/* FILL ME */
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};
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@ -185,13 +185,32 @@ static GstObject *
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gst_bin_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
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guint index)
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{
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return g_list_nth_data (GST_BIN (child_proxy)->children, index);
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GstObject *res;
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GstBin *bin;
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bin = GST_BIN_CAST (child_proxy);
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GST_LOCK (bin);
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if ((res = g_list_nth_data (bin->children, index)))
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gst_object_ref (res);
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GST_UNLOCK (bin);
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return res;
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}
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guint
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gst_bin_child_proxy_get_children_count (GstChildProxy * child_proxy)
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{
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return GST_BIN (child_proxy)->numchildren;
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guint num;
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GstBin *bin;
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bin = GST_BIN_CAST (child_proxy);
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GST_LOCK (bin);
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num = bin->numchildren;
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GST_UNLOCK (bin);
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return num;
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}
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static void
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@ -61,31 +61,46 @@ static guint signals[LAST_SIGNAL] = { 0 };
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*
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* Implementors can use #GstObject together with gst_object_get_name()
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*
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* Returns: the child object or %NULL if not found
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* Returns: the child object or %NULL if not found. Unref after usage.
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*
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* MT safe.
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*/
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GstObject *
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gst_child_proxy_get_child_by_name (GstChildProxy * parent, const gchar * name)
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{
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guint count, i;
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GstObject *object;
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const gchar *object_name;
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GstObject *object, *result;
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gchar *object_name;
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g_return_val_if_fail (GST_IS_CHILD_PROXY (parent), NULL);
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g_return_val_if_fail (name != NULL, NULL);
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result = NULL;
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count = gst_child_proxy_get_children_count (parent);
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for (i = 0; i < count; i++) {
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object = gst_child_proxy_get_child_by_index (parent, i);
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gboolean eq;
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if (!(object = gst_child_proxy_get_child_by_index (parent, i)))
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continue;
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object_name = gst_object_get_name (object);
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if (object_name == NULL) {
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g_warning ("child %u of parent %s has no name", i,
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GST_OBJECT_NAME (parent));
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continue;
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goto next;
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}
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if (g_str_equal (object_name, name))
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return object;
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eq = g_str_equal (object_name, name);
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g_free (object_name);
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if (eq) {
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result = object;
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break;
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}
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return NULL;
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next:
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gst_object_unref (object);
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}
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return result;
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}
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/**
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@ -95,7 +110,10 @@ gst_child_proxy_get_child_by_name (GstChildProxy * parent, const gchar * name)
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*
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* Fetches a child by its number.
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*
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* Returns: the child object or %NULL if not found (index too high)
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* Returns: the child object or %NULL if not found (index too high). Unref
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* after usage.
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*
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* MT safe.
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*/
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GstObject *
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gst_child_proxy_get_child_by_index (GstChildProxy * parent, guint index)
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@ -113,6 +131,8 @@ gst_child_proxy_get_child_by_index (GstChildProxy * parent, guint index)
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* Gets the number of child objects this parent contains.
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*
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* Returns: the number of child objects
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*
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* MT safe.
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*/
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guint
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gst_child_proxy_get_children_count (GstChildProxy * parent)
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@ -132,7 +152,10 @@ gst_child_proxy_get_children_count (GstChildProxy * parent)
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* Looks up which object and #GParamSpec would be effected by the given @name.
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*
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* Returns: TRUE if @target and @pspec could be found. FALSE otherwise. In that
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* case the values for @pspec and @target are not modified
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* case the values for @pspec and @target are not modified. Unref @target after
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* usage.
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*
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* MT safe.
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*/
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gboolean
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gst_child_proxy_lookup (GstObject * object, const gchar * name,
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@ -144,21 +167,26 @@ gst_child_proxy_lookup (GstObject * object, const gchar * name,
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g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
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g_return_val_if_fail (name != NULL, FALSE);
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gst_object_ref (object);
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current = names = g_strsplit (name, "::", -1);
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while (current[1]) {
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GstObject *next;
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if (!GST_IS_CHILD_PROXY (object)) {
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GST_INFO
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("object %s is not a parent, so you cannot request a child by name %s",
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GST_OBJECT_NAME (object), current[0]);
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break;
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}
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object =
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gst_child_proxy_get_child_by_name (GST_CHILD_PROXY (object),
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next = gst_child_proxy_get_child_by_name (GST_CHILD_PROXY (object),
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current[0]);
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if (!object) {
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if (!next) {
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GST_INFO ("no such object %s", current[0]);
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break;
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}
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gst_object_unref (object);
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object = next;
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current++;
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};
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if (current[1] == NULL) {
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@ -169,11 +197,14 @@ gst_child_proxy_lookup (GstObject * object, const gchar * name,
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} else {
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if (pspec)
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*pspec = spec;
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if (target)
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if (target) {
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gst_object_ref (object);
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*target = object;
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}
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res = TRUE;
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}
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}
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gst_object_unref (object);
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g_strfreev (names);
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return res;
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}
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@ -198,12 +229,20 @@ gst_child_proxy_get_property (GstObject * object, const gchar * name,
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g_return_if_fail (name != NULL);
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g_return_if_fail (!G_IS_VALUE (value));
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if (!gst_child_proxy_lookup (object, name, &target, &pspec)) {
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if (!gst_child_proxy_lookup (object, name, &target, &pspec))
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goto not_found;
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g_object_get_property (G_OBJECT (target), pspec->name, value);
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gst_object_unref (target);
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return;
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not_found:
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{
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g_warning ("cannot get property %s from object %s", name,
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GST_OBJECT_NAME (object));
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return;
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}
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g_object_get_property (G_OBJECT (target), pspec->name, value);
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}
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/**
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@ -224,8 +263,6 @@ gst_child_proxy_get_valist (GstObject * object,
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g_return_if_fail (G_IS_OBJECT (object));
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g_object_ref (object);
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name = first_property_name;
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/* iterate over pairs */
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@ -239,8 +276,6 @@ gst_child_proxy_get_valist (GstObject * object,
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g_value_unset (&value);
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name = va_arg (var_args, gchar *);
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}
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g_object_unref (object);
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}
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/**
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@ -282,12 +317,19 @@ gst_child_proxy_set_property (GstObject * object, const gchar * name,
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g_return_if_fail (name != NULL);
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g_return_if_fail (!G_IS_VALUE (value));
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if (!gst_child_proxy_lookup (object, name, &target, &pspec)) {
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if (!gst_child_proxy_lookup (object, name, &target, &pspec))
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goto not_found;
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g_object_set_property (G_OBJECT (target), pspec->name, value);
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gst_object_unref (target);
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return;
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not_found:
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{
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g_warning ("cannot set property %s on object %s", name,
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GST_OBJECT_NAME (object));
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return;
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}
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g_object_set_property (G_OBJECT (target), pspec->name, value);
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}
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/**
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@ -308,8 +350,6 @@ gst_child_proxy_set_valist (GstObject * object,
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g_return_if_fail (G_IS_OBJECT (object));
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g_object_ref (object);
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name = first_property_name;
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/* iterate over pairs */
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@ -320,21 +360,21 @@ gst_child_proxy_set_valist (GstObject * object,
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if (!gst_child_proxy_lookup (object, name, &target, &pspec)) {
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g_warning ("no such property %s in object %s", name,
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GST_OBJECT_NAME (object));
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g_object_unref (object);
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continue;
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}
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g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
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G_VALUE_COLLECT (&value, var_args, G_VALUE_NOCOPY_CONTENTS, &error);
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if (error) {
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g_warning ("error copying value: %s", error);
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g_object_unref (object);
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gst_object_unref (target);
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return;
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}
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g_object_set_property (G_OBJECT (target), pspec->name, &value);
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gst_object_unref (target);
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g_value_unset (&value);
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name = va_arg (var_args, gchar *);
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}
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g_object_unref (object);
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}
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/**
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@ -267,6 +267,7 @@ gst_parse_element_set (gchar *value, GstElement *element, graph_t *graph)
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if (!gst_value_deserialize (&v, pos))
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goto error;
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g_object_set_property (G_OBJECT (target), pspec->name, &v);
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gst_object_unref (target);
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} else {
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SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_NO_SUCH_PROPERTY, _("no property \"%s\" in element \"%s\""), value, GST_ELEMENT_NAME (element));
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}
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@ -280,6 +281,7 @@ out:
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return;
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error:
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gst_object_unref (target);
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SET_ERROR (((graph_t *) graph)->error, GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
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_("could not set property \"%s\" in element \"%s\" to \"%s\""),
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value, GST_ELEMENT_NAME (element), pos);
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