gst/gstcontrolbinding.h

   1 /* GStreamer
   2  *
   3  * Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
   4  *
   5  * gstcontrolbinding.h: Attachment for control sources
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef __GST_CONTROL_BINDING_H__
  24 #define __GST_CONTROL_BINDING_H__
  25
  26 #include <gst/gstconfig.h>
  27
  28 #include <glib-object.h>
  29
  30 #include <gst/gstcontrolsource.h>
  31
  32 G_BEGIN_DECLS
  33
  34 #define GST_TYPE_CONTROL_BINDING \
  35   (gst_control_binding_get_type())
  36 #define GST_CONTROL_BINDING(obj) \
  37   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CONTROL_BINDING,GstControlBinding))
  38 #define GST_CONTROL_BINDING_CLASS(klass) \
  39   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CONTROL_BINDING,GstControlBindingClass))
  40 #define GST_IS_CONTROL_BINDING(obj) \
  41   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CONTROL_BINDING))
  42 #define GST_IS_CONTROL_BINDING_CLASS(klass) \
  43   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CONTROL_BINDING))
  44 #define GST_CONTROL_BINDING_GET_CLASS(obj) \
  45   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstControlBindingClass))
  46
  47 typedef struct _GstControlBinding GstControlBinding;
  48 typedef struct _GstControlBindingClass GstControlBindingClass;
  49
  50 /**
  51  * GstControlBinding:
  52  *
  53  * The instance structure of #GstControlBinding.
  54  */
  55 struct _GstControlBinding {
  56   GObject parent;
  57
  58   /*< public >*/
  59   GParamSpec *pspec;            /* GParamSpec for this property */
  60   const gchar *name;            /* name of the property */
  61   GstControlSource *csource;    /* GstControlSource for this property */
  62   gboolean disabled;
  63   GValue cur_value, last_value;
  64
  65   /*< private >*/
  66   gpointer _gst_reserved[GST_PADDING];
  67 };
  68
  69 /**
  70  * GstControlBindingClass:
  71  * @parent_class: Parent class
  72  *
  73  * The class structure of #GstControlBinding.
  74  */
  75
  76 struct _GstControlBindingClass
  77 {
  78   GObjectClass parent_class;
  79
  80   /*< private >*/
  81   gpointer _gst_reserved[GST_PADDING];
  82 };
  83
  84 GType gst_control_binding_get_type (void);
  85
  86 /* Functions */
  87
  88 GstControlBinding * gst_control_binding_new                (GstObject * object, const gchar * property_name,
  89                                                             GstControlSource * csource);
  90
  91 gboolean            gst_control_binding_sync_values        (GstControlBinding * self, GstObject *object,
  92                                                             GstClockTime timestamp, GstClockTime last_sync);
  93 GstControlSource *  gst_control_binding_get_control_source (GstControlBinding * self);
  94 void                gst_control_binding_set_disabled       (GstControlBinding * self, gboolean disabled);
  95 gboolean            gst_control_binding_is_disabled        (GstControlBinding * self);
  96 G_END_DECLS
  97
  98 #endif /* __GST_CONTROL_BINDING_H__ */