X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gst%2Fgstparamspecs.c;h=7de51d7baf1f44eb48ea88997bd39a6866a04dc2;hb=53e879c750f6b37da424123d469d162fe9cddbed;hp=bed692d425d7852c704250f524b733927fb03c8e;hpb=4348851cd98d50013f341e067c06f4176ff41fce;p=platform%2Fupstream%2Fgstreamer.git

diff --git a/gst/gstparamspecs.c b/gst/gstparamspecs.c
index bed692d..7de51d7 100644
--- a/gst/gstparamspecs.c
+++ b/gst/gstparamspecs.c
@@ -13,17 +13,16 @@
  *
  * 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.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
  */
 /**
  * SECTION:gstparamspec
+ * @title: GstParamSpec
  * @short_description: GParamSpec implementations specific
  * to GStreamer
  *
  * GParamSpec implementations specific to GStreamer.
- *
- * Last reviewed on 2008-03-11 (0.10.18)
  */
 
 #ifdef HAVE_CONFIG_H
@@ -124,10 +123,11 @@ _gst_param_fraction_values_cmp (GParamSpec * pspec, const GValue * value1,
 GType
 gst_param_spec_fraction_get_type (void)
 {
-  static GType type;            /* 0 */
+  static volatile GType gst_faction_type = 0;
 
   /* register GST_TYPE_PARAM_FRACTION */
-  if (type == 0) {
+  if (g_once_init_enter (&gst_faction_type)) {
+    GType type;
     static GParamSpecTypeInfo pspec_info = {
       sizeof (GstParamSpecFraction),    /* instance_size     */
       0,                        /* n_preallocs       */
@@ -138,10 +138,12 @@ gst_param_spec_fraction_get_type (void)
       _gst_param_fraction_validate,     /* value_validate    */
       _gst_param_fraction_values_cmp,   /* values_cmp        */
     };
-    pspec_info.value_type = GST_TYPE_FRACTION;
+    pspec_info.value_type = gst_fraction_get_type ();
     type = g_param_type_register_static ("GstParamFraction", &pspec_info);
+    g_once_init_leave (&gst_faction_type, type);
   }
-  return type;
+
+  return gst_faction_type;
 }
 
 /**
@@ -162,9 +164,7 @@ gst_param_spec_fraction_get_type (void)
  * used in connection with g_object_class_install_property() in a GObjects's
  * instance_init function.
  *
- * Returns: (transfer full): a newly created parameter specification
- *
- * Since: 0.10.14
+ * Returns: (transfer full) (nullable): a newly created parameter specification
  */
 GParamSpec *
 gst_param_spec_fraction (const gchar * name, const gchar * nick,
@@ -205,3 +205,165 @@ gst_param_spec_fraction (const gchar * name, const gchar * nick,
 
   return pspec;
 }
+
+static void
+_gst_param_array_init (GParamSpec * pspec)
+{
+  GstParamSpecArray *aspec = GST_PARAM_SPEC_ARRAY_LIST (pspec);
+
+  aspec->element_spec = NULL;
+}
+
+static void
+_gst_param_array_finalize (GParamSpec * pspec)
+{
+  GstParamSpecArray *aspec = GST_PARAM_SPEC_ARRAY_LIST (pspec);
+  GParamSpecClass *parent_class =
+      g_type_class_peek (g_type_parent (GST_TYPE_PARAM_ARRAY_LIST));
+
+  if (aspec->element_spec) {
+    g_param_spec_unref (aspec->element_spec);
+    aspec->element_spec = NULL;
+  }
+
+  parent_class->finalize (pspec);
+}
+
+static gboolean
+_gst_param_array_validate (GParamSpec * pspec, GValue * value)
+{
+  GstParamSpecArray *aspec = GST_PARAM_SPEC_ARRAY_LIST (pspec);
+  gboolean ret = FALSE;
+
+  /* ensure array values validity against a present element spec */
+  if (aspec->element_spec) {
+    GParamSpec *element_spec = aspec->element_spec;
+    guint i;
+
+    for (i = 0; i < gst_value_array_get_size (value); i++) {
+      GValue *element = (GValue *) gst_value_array_get_value (value, i);
+
+      /* need to fixup value type, or ensure that the array value is initialized at all */
+      if (!g_value_type_compatible (G_VALUE_TYPE (element),
+              G_PARAM_SPEC_VALUE_TYPE (element_spec))) {
+        if (G_VALUE_TYPE (element) != 0)
+          g_value_unset (element);
+        g_value_init (element, G_PARAM_SPEC_VALUE_TYPE (element_spec));
+        g_param_value_set_default (element_spec, element);
+        ret = TRUE;
+      }
+
+      /* validate array value against element_spec */
+      if (g_param_value_validate (element_spec, element))
+        ret = TRUE;
+    }
+  }
+
+  return ret;
+}
+
+static gint
+_gst_param_array_values_cmp (GParamSpec * pspec, const GValue * value1,
+    const GValue * value2)
+{
+  GstParamSpecArray *aspec = GST_PARAM_SPEC_ARRAY_LIST (pspec);
+  guint size1, size2;
+
+  if (!value1 || !value2)
+    return value2 ? -1 : value1 != value2;
+
+  size1 = gst_value_array_get_size (value1);
+  size2 = gst_value_array_get_size (value2);
+
+  if (size1 != size2)
+    return size1 < size2 ? -1 : 1;
+  else if (!aspec->element_spec) {
+    /* we need an element specification for comparisons, so there's not much
+     * to compare here, try to at least provide stable lesser/greater result
+     */
+    return size1 < size2 ? -1 : size1 > size2;
+  } else {                      /* size1 == size2 */
+    guint i;
+
+    for (i = 0; i < size1; i++) {
+      const GValue *element1 = gst_value_array_get_value (value1, i);
+      const GValue *element2 = gst_value_array_get_value (value2, i);
+      gint cmp;
+
+      /* need corresponding element types, provide stable result otherwise */
+      if (G_VALUE_TYPE (element1) != G_VALUE_TYPE (element2))
+        return G_VALUE_TYPE (element1) < G_VALUE_TYPE (element2) ? -1 : 1;
+      cmp = g_param_values_cmp (aspec->element_spec, element1, element2);
+      if (cmp)
+        return cmp;
+    }
+    return 0;
+  }
+}
+
+GType
+gst_param_spec_array_get_type (void)
+{
+  static volatile GType gst_array_type = 0;
+
+  /* register GST_TYPE_PARAM_FRACTION */
+  if (g_once_init_enter (&gst_array_type)) {
+    GType type;
+    static GParamSpecTypeInfo pspec_info = {
+      sizeof (GstParamSpecArray),       /* instance_size     */
+      0,                        /* n_preallocs       */
+      _gst_param_array_init,    /* instance_init     */
+      G_TYPE_INVALID,           /* value_type        */
+      _gst_param_array_finalize,        /* finalize          */
+      NULL,                     /* value_set_default */
+      _gst_param_array_validate,        /* value_validate    */
+      _gst_param_array_values_cmp,      /* values_cmp        */
+    };
+    pspec_info.value_type = gst_value_array_get_type ();
+    type = g_param_type_register_static ("GstParamArray", &pspec_info);
+    g_once_init_leave (&gst_array_type, type);
+  }
+
+  return gst_array_type;
+}
+
+/**
+ * gst_param_spec_array:
+ * @name: canonical name of the property specified
+ * @nick: nick name for the property specified
+ * @blurb: description of the property specified
+ * @element_spec: GParamSpec of the array
+ * @flags: flags for the property specified
+ *
+ * This function creates a GstArray GParamSpec for use by objects/elements
+ * that want to expose properties of GstArray type. This function is
+ * typically * used in connection with g_object_class_install_property() in a
+ * GObjects's instance_init function.
+ *
+ * Returns: (transfer full): a newly created parameter specification
+ *
+ * Since: 1.14
+ */
+
+GParamSpec *
+gst_param_spec_array (const gchar * name,
+    const gchar * nick,
+    const gchar * blurb, GParamSpec * element_spec, GParamFlags flags)
+{
+  GstParamSpecArray *aspec;
+
+  g_return_val_if_fail (element_spec == NULL
+      || G_IS_PARAM_SPEC (element_spec), NULL);
+
+  aspec = g_param_spec_internal (GST_TYPE_PARAM_ARRAY_LIST,
+      name, nick, blurb, flags);
+  if (aspec == NULL)
+    return NULL;
+
+  if (element_spec) {
+    aspec->element_spec = g_param_spec_ref (element_spec);
+    g_param_spec_sink (element_spec);
+  }
+
+  return G_PARAM_SPEC (aspec);
+}