| /* GStreamer |
| * |
| * Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net> |
| * |
| * gstdirectcontrolbinding.h: Direct attachment for control sources |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_DIRECT_CONTROL_BINDING_H__ |
| #define __GST_DIRECT_CONTROL_BINDING_H__ |
| |
| #include <gst/gstconfig.h> |
| |
| #include <glib-object.h> |
| |
| #include <gst/gstcontrolsource.h> |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_DIRECT_CONTROL_BINDING \ |
| (gst_direct_control_binding_get_type()) |
| #define GST_DIRECT_CONTROL_BINDING(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBinding)) |
| #define GST_DIRECT_CONTROL_BINDING_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBindingClass)) |
| #define GST_IS_DIRECT_CONTROL_BINDING(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRECT_CONTROL_BINDING)) |
| #define GST_IS_DIRECT_CONTROL_BINDING_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRECT_CONTROL_BINDING)) |
| #define GST_DIRECT_CONTROL_BINDING_GET_CLASS(obj) \ |
| (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstDirectControlBindingClass)) |
| |
| typedef struct _GstDirectControlBinding GstDirectControlBinding; |
| typedef struct _GstDirectControlBindingClass GstDirectControlBindingClass; |
| |
| /** |
| * GstDirectControlBindingConvertValue: |
| * @self: the #GstDirectControlBinding instance |
| * @src_value: the value returned by the cotnrol source |
| * @dest_value: the target location |
| * |
| * Function to map a control-value to the target plain data type. |
| */ |
| typedef void (* GstDirectControlBindingConvertValue) (GstDirectControlBinding *self, gdouble src_value, gpointer dest_value); |
| |
| /** |
| * GstDirectControlBindingConvertGValue: |
| * @self: the #GstDirectControlBinding instance |
| * @src_value: the value returned by the cotnrol source |
| * @dest_value: the target GValue |
| * |
| * Function to map a control-value to the target GValue. |
| */ |
| typedef void (* GstDirectControlBindingConvertGValue) (GstDirectControlBinding *self, gdouble src_value, GValue *dest_value); |
| |
| /** |
| * GstDirectControlBinding: |
| * @name: name of the property of this binding |
| * |
| * The instance structure of #GstDirectControlBinding. |
| */ |
| struct _GstDirectControlBinding { |
| GstControlBinding parent; |
| |
| /*< private >*/ |
| GstControlSource *cs; /* GstControlSource for this property */ |
| GValue cur_value; |
| gdouble last_value; |
| gint byte_size; |
| gboolean want_absolute; |
| |
| GstDirectControlBindingConvertValue convert_value; |
| GstDirectControlBindingConvertGValue convert_g_value; |
| |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| /** |
| * GstDirectControlBindingClass: |
| * @parent_class: Parent class |
| * @convert: Class method to convert control-values |
| * |
| * The class structure of #GstDirectControlBinding. |
| */ |
| |
| struct _GstDirectControlBindingClass |
| { |
| GstControlBindingClass parent_class; |
| |
| /*< private >*/ |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| GType gst_direct_control_binding_get_type (void); |
| |
| /* Functions */ |
| |
| GstControlBinding * gst_direct_control_binding_new (GstObject * object, const gchar * property_name, |
| GstControlSource * cs); |
| |
| GstControlBinding * gst_direct_control_binding_new_absolute (GstObject * object, const gchar * property_name, |
| GstControlSource * cs); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_DIRECT_CONTROL_BINDING_H__ */ |