* All instances of one type will share the list of presets. The list is created
* on demand, if presets are not used, the list is not created.
*
+ * The interface comes with a default implementation that servers most plugins.
+ * Wrapper plugins will override most methods to implement support for the
+ * native preset format of those wrapped plugins.
+ * One method that is useful to be overridde is gst_preset_get_property_names().
+ * With that one can control which properties are saved and in which order.
*/
/* @todo:
* - we need locks to avoid two instances manipulating the preset list -> flock
+ * better save the new file to a tempfile and then rename
* - need to add support for GstChildProxy
* - how can we support both Preferences and Presets,
* - preferences = static settings, configurations (non controlable)
static GQuark preset_meta_quark = 0;
static GQuark instance_list_quark = 0;
+/*static GQuark property_list_quark = 0;*/
+
/* default iface implementation */
/* max character per line */
GST_DEBUG ("new data hash");
}
}
- GST_INFO ("%ld:%s: presets: %p, %p, %p", type, G_OBJECT_TYPE_NAME (self),
+ GST_INFO ("%s: presets: %p, %p, %p", G_OBJECT_TYPE_NAME (self),
*presets, (preset_meta ? *preset_meta : 0),
(preset_data ? *preset_data : 0));
return (res);
static gboolean
preset_skip_property (GParamSpec * property)
{
- /* @todo: currently we skip non-controlable parameters and thus only create
- * presets, skipping the controlable one would create a config/preference
- */
- if (!(property->flags & GST_PARAM_CONTROLLABLE) ||
- !(property->flags & G_PARAM_READABLE) ||
+ if (!(property->flags & (G_PARAM_READABLE | G_PARAM_WRITABLE)) ||
(property->flags & G_PARAM_CONSTRUCT_ONLY))
return TRUE;
return FALSE;
}
}
-static GList *
+static gchar **
gst_preset_default_get_preset_names (GstPreset * self)
{
GType type = G_TYPE_FROM_INSTANCE (self);
instances = g_list_prepend (instances, self);
g_type_set_qdata (type, instance_list_quark, (gpointer) instances);
}
- /* @todo: copy strings to avoid races? transform into a strv? */
- return (presets);
+ /* copy strings to avoid races */
+ if (presets) {
+ gchar **preset_names = g_new (gchar *, g_list_length (presets) + 1);
+ GList *node;
+ guint i = 0;
+
+ for (node = presets; node; node = g_list_next (node)) {
+ preset_names[i++] = g_strdup (node->data);
+ }
+ preset_names[i] = NULL;
+ return (preset_names);
+ }
+ return (NULL);
+}
+
+static GList *
+gst_preset_default_get_property_names (GstPreset * self)
+{
+ GParamSpec **properties, *property;
+ GList *names = NULL;
+ guint i, number_of_properties;
+
+ if ((properties = g_object_class_list_properties (G_OBJECT_CLASS
+ (GST_ELEMENT_GET_CLASS (self)), &number_of_properties))) {
+ for (i = 0; i < number_of_properties; i++) {
+ property = properties[i];
+ if (preset_skip_property (property) ||
+ (property->flags & GST_PARAM_CONTROLLABLE))
+ continue;
+
+ names = g_list_prepend (names, property->name);
+ }
+ for (i = 0; i < number_of_properties; i++) {
+ property = properties[i];
+ if (preset_skip_property (property) ||
+ !(property->flags & GST_PARAM_CONTROLLABLE))
+ continue;
+
+ names = g_list_prepend (names, property->name);
+ }
+ }
+ return names;
}
static gboolean
if ((node = g_list_find_custom (presets, name, (GCompareFunc) strcmp))) {
GHashTable *data = g_hash_table_lookup (preset_data, node->data);
- GParamSpec **properties, *property;
+ GList *properties;
GType base, parent;
- guint i, number_of_properties;
gchar *val = NULL;
GST_DEBUG ("loading preset : '%s', data : %p (size=%d)", name, data,
g_hash_table_size (data));
/* preset found, now set values */
- if ((properties =
- g_object_class_list_properties (G_OBJECT_CLASS
- (GST_ELEMENT_GET_CLASS (self)), &number_of_properties))) {
- for (i = 0; i < number_of_properties; i++) {
- property = properties[i];
- if (preset_skip_property (property))
- continue;
+ if ((properties = gst_preset_get_property_names (self))) {
+ GParamSpec *property;
+ GList *node;
+
+ for (node = properties; node; node = g_list_next (node)) {
+ property = g_object_class_find_property (G_OBJECT_CLASS
+ (GST_ELEMENT_GET_CLASS (self)), node->data);
/* check if we have a settings for this property */
if ((val = (gchar *) g_hash_table_lookup (data, property->name))) {
GST_INFO ("parameter '%s' not in preset", property->name);
}
}
+ g_list_free (properties);
return (TRUE);
+ } else {
+ GST_INFO ("no properties");
}
}
} else {
GList *presets;
GHashTable *preset_meta, *preset_data;
GHashTable *meta, *data;
- GParamSpec **properties, *property;
+ GList *properties;
GType base, parent;
- guint i, number_of_properties;
gchar *str = NULL, buffer[30 + 1];
/*guint flags; */
meta = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
/* take copies of current gobject properties from self */
- if ((properties =
- g_object_class_list_properties (G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS
- (self)), &number_of_properties))) {
- for (i = 0; i < number_of_properties; i++) {
- property = properties[i];
- /*flags=GPOINTER_TO_INT(g_param_spec_get_qdata(property,gst_property_meta_quark_flags)); */
+ if ((properties = gst_preset_get_property_names (self))) {
+ GParamSpec *property;
+ GList *node;
- /* skip non-controlable */
- if (preset_skip_property (property))
- continue;
+ for (node = properties; node; node = g_list_next (node)) {
+ property = g_object_class_find_property (G_OBJECT_CLASS
+ (GST_ELEMENT_GET_CLASS (self)), node->data);
/* get base type */
base = property->value_type;
g_hash_table_insert (data, (gpointer) property->name, (gpointer) str);
str = NULL;
}
-
+ g_list_free (properties);
}
/* @todo: handle childproxy properties as well */
GST_INFO (" saved");
+ } else {
+ GST_INFO ("no properties");
}
/*
- * flock(fileno())
+ * @todo: flock(fileno())
* http://www.ecst.csuchico.edu/~beej/guide/ipc/flock.html
*/
g_hash_table_insert (preset_data, (gpointer) name, (gpointer) data);
static void
gst_preset_default_create_preset (GstPreset * self)
{
- GParamSpec **properties, *property;
- guint i, number_of_properties;
+ GList *properties;
GType base, parent;
- if ((properties =
- g_object_class_list_properties (G_OBJECT_CLASS (GST_OBJECT_GET_CLASS
- (self)), &number_of_properties))) {
+ if ((properties = gst_preset_get_property_names (self))) {
+ GParamSpec *property;
+ GList *node;
gdouble rnd;
- GST_INFO ("nr of values : %d", number_of_properties);
- for (i = 0; i < number_of_properties; i++) {
- property = properties[i];
-
- /* skip non-controlable, and non persistent params */
- if (preset_skip_property (property))
- continue;
- /* we do not want to create a setting for trigger properties, buzztard
- has more flags attached to g_param_specs
- else {
- guint flags=0;
-
- if(BT_IS_PROPERTY_META(self)) {
- flags=GPOINTER_TO_INT(g_param_spec_get_qdata(property,bt_property_meta_quark_flags));
- }
- if(!(flags&BT_PROPERTY_META_STATE)) continue;
- }
- */
+ for (node = properties; node; node = g_list_next (node)) {
+ property = g_object_class_find_property (G_OBJECT_CLASS
+ (GST_ELEMENT_GET_CLASS (self)), node->data);
rnd = ((gdouble) rand ()) / (RAND_MAX + 1.0);
* gst_preset_get_preset_names:
* @self: a #GObject that implements #GstPreset
*
- * Get a copy of the preset name list. Free list when done.
+ * Get a copy of preset names as a NULL terminated string array. Free with
+ * g_strfreev() wen done.
*
* Returns: list with names
*/
-GList *
+gchar **
gst_preset_get_preset_names (GstPreset * self)
{
g_return_val_if_fail (GST_IS_PRESET (self), NULL);
}
/**
+ * gst_preset_get_property_names:
+ * @self: a #GObject that implements #GstPreset
+ *
+ * Get a the gobject property names to use for presets.
+ *
+ * Returns: list with names
+ */
+GList *
+gst_preset_get_property_names (GstPreset * self)
+{
+ g_return_val_if_fail (GST_IS_PRESET (self), NULL);
+
+ return (GST_PRESET_GET_INTERFACE (self)->get_property_names (self));
+}
+
+/**
* gst_preset_load_preset:
* @self: a #GObject that implements #GstPreset
* @name: preset name to load
gst_preset_class_init (GstPresetInterface * iface)
{
iface->get_preset_names = gst_preset_default_get_preset_names;
+ iface->get_property_names = gst_preset_default_get_property_names;
iface->load_preset = gst_preset_default_load_preset;
iface->save_preset = gst_preset_default_save_preset;
GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLACK, "preset interface");
/* create quarks for use with g_type_{g,s}et_qdata() */
- preset_list_quark = g_quark_from_string ("GstPreset::presets");
- preset_path_quark = g_quark_from_string ("GstPreset::path");
- preset_data_quark = g_quark_from_string ("GstPreset::data");
- preset_meta_quark = g_quark_from_string ("GstPreset::meta");
- instance_list_quark = g_quark_from_string ("GstPreset::instances");
+ preset_list_quark = g_quark_from_static_string ("GstPreset::presets");
+ preset_path_quark = g_quark_from_static_string ("GstPreset::path");
+ preset_data_quark = g_quark_from_static_string ("GstPreset::data");
+ preset_meta_quark = g_quark_from_static_string ("GstPreset::meta");
+ instance_list_quark = g_quark_from_static_string ("GstPreset::instances");
+ /*property_list_quark = g_quark_from_static_string ("GstPreset::properties"); */
initialized = TRUE;
}
projects / platform / upstream / gstreamer.git / commitdiff