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103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/* GStreamer
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*
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* Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
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*
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* gstdirectcontrolbinding.h: Direct attachment for control sources
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_DIRECT_CONTROL_BINDING_H__
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#define __GST_DIRECT_CONTROL_BINDING_H__
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#include <gst/gstconfig.h>
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#include <glib-object.h>
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#include <gst/gstcontrolsource.h>
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G_BEGIN_DECLS
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#define GST_TYPE_DIRECT_CONTROL_BINDING \
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(gst_direct_control_binding_get_type())
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#define GST_DIRECT_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBinding))
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#define GST_DIRECT_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRECT_CONTROL_BINDING,GstDirectControlBindingClass))
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#define GST_IS_DIRECT_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRECT_CONTROL_BINDING))
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#define GST_IS_DIRECT_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRECT_CONTROL_BINDING))
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#define GST_DIRECT_CONTROL_BINDING_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstDirectControlBindingClass))
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typedef struct _GstDirectControlBinding GstDirectControlBinding;
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typedef struct _GstDirectControlBindingClass GstDirectControlBindingClass;
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/**
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* GstDirectControlBindingConvert:
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* @self: the #GstDirectControlBinding instance
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* @src_value: the value returned by the cotnrol source
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* @dest_value: the target GValue
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*
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* Function to map a control-value to the target GValue.
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*/
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typedef void (* GstDirectControlBindingConvert) (GstDirectControlBinding *self, gdouble src_value, GValue *dest_value);
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/**
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* GstDirectControlBinding:
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* @name: name of the property of this binding
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*
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* The instance structure of #GstDirectControlBinding.
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*/
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struct _GstDirectControlBinding {
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GstControlBinding parent;
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/*< private >*/
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GstControlSource *cs; /* GstControlSource for this property */
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GValue cur_value;
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gdouble last_value;
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GstDirectControlBindingConvert convert;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstDirectControlBindingClass:
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* @parent_class: Parent class
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* @convert: Class method to convert control-values
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*
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* The class structure of #GstDirectControlBinding.
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*/
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struct _GstDirectControlBindingClass
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{
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GstControlBindingClass parent_class;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_direct_control_binding_get_type (void);
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/* Functions */
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GstControlBinding * gst_direct_control_binding_new (GstObject * object, const gchar * property_name,
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GstControlSource * cs);
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G_END_DECLS
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#endif /* __GST_DIRECT_CONTROL_BINDING_H__ */
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