1 /* GStreamer Color Balance
2 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * color-balance.h: image color balance interface design
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 #ifndef __GST_COLOR_BALANCE_H__
23 #define __GST_COLOR_BALANCE_H__
26 #include <gst/interfaces/colorbalancechannel.h>
27 #include <gst/interfaces/interfaces-enumtypes.h>
31 #define GST_TYPE_COLOR_BALANCE \
32 (gst_color_balance_get_type ())
33 #define GST_COLOR_BALANCE(obj) \
34 (GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, \
36 #define GST_COLOR_BALANCE_CLASS(klass) \
37 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_COLOR_BALANCE, \
38 GstColorBalanceClass))
39 #define GST_IS_COLOR_BALANCE(obj) \
40 (GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
41 #define GST_IS_COLOR_BALANCE_CLASS(klass) \
42 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_COLOR_BALANCE))
43 #define GST_COLOR_BALANCE_GET_CLASS(inst) \
44 (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_COLOR_BALANCE, GstColorBalanceClass))
46 #define GST_COLOR_BALANCE_TYPE(klass) (klass->balance_type)
48 typedef struct _GstColorBalance GstColorBalance;
49 typedef struct _GstColorBalanceClass GstColorBalanceClass;
52 * GstColorBalanceType:
53 * @GST_COLOR_BALANCE_HARDWARE: Color balance is implemented with dedicated
55 * @GST_COLOR_BALANCE_SOFTWARE: Color balance is implemented via software
58 * An enumeration indicating whether an element implements color balancing
59 * operations in software or in dedicated hardware. In general, dedicated
60 * hardware implementations (such as those provided by xvimagesink) are
65 GST_COLOR_BALANCE_HARDWARE,
66 GST_COLOR_BALANCE_SOFTWARE
67 } GstColorBalanceType;
70 * GstColorBalanceClass:
71 * @klass: the parent interface
72 * @balance_type: implementation type
73 * @list_channels: list handled channels
74 * @set_value: set a channel value
75 * @get_value: get a channel value
76 * @value_changed: default handler for value changed notification
78 * Color-balance interface.
80 struct _GstColorBalanceClass {
83 GstColorBalanceType balance_type;
85 /* virtual functions */
86 const GList * (* list_channels) (GstColorBalance *balance);
88 void (* set_value) (GstColorBalance *balance,
89 GstColorBalanceChannel *channel,
91 gint (* get_value) (GstColorBalance *balance,
92 GstColorBalanceChannel *channel);
95 void (* value_changed) (GstColorBalance *balance,
96 GstColorBalanceChannel *channel,
100 gpointer _gst_reserved[GST_PADDING];
103 GType gst_color_balance_get_type (void);
105 /* virtual class function wrappers */
107 gst_color_balance_list_channels (GstColorBalance *balance);
108 void gst_color_balance_set_value (GstColorBalance *balance,
109 GstColorBalanceChannel *channel,
111 gint gst_color_balance_get_value (GstColorBalance *balance,
112 GstColorBalanceChannel *channel);
115 gst_color_balance_get_balance_type (GstColorBalance *balance);
118 void gst_color_balance_value_changed (GstColorBalance *balance,
119 GstColorBalanceChannel *channel,
124 #endif /* __GST_COLOR_BALANCE_H__ */