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/* GStreamer Color Balance
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* color-balance.h: image color balance interface design
*
* 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_COLOR_BALANCE_H__
#define __GST_COLOR_BALANCE_H__
#include <gst/gst.h>
#include <gst/video/colorbalancechannel.h>
G_BEGIN_DECLS
#define GST_TYPE_COLOR_BALANCE \
(gst_color_balance_get_type ())
#define GST_COLOR_BALANCE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, GstColorBalance))
#define GST_IS_COLOR_BALANCE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
#define GST_COLOR_BALANCE_GET_INTERFACE(inst) \
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_COLOR_BALANCE, GstColorBalanceInterface))
typedef struct _GstColorBalance GstColorBalance;
typedef struct _GstColorBalanceInterface GstColorBalanceInterface;
/**
* GstColorBalanceType:
* @GST_COLOR_BALANCE_HARDWARE: Color balance is implemented with dedicated
* hardware.
* @GST_COLOR_BALANCE_SOFTWARE: Color balance is implemented via software
* processing.
*
* An enumeration indicating whether an element implements color balancing
* operations in software or in dedicated hardware. In general, dedicated
* hardware implementations (such as those provided by xvimagesink) are
* preferred.
*/
typedef enum
{
GST_COLOR_BALANCE_HARDWARE,
GST_COLOR_BALANCE_SOFTWARE
} GstColorBalanceType;
/**
* GstColorBalanceInterface:
* @iface: the parent interface
* @get_balance_type: implementation type
* @list_channels: list handled channels
* @set_value: set a channel value
* @get_value: get a channel value
* @value_changed: default handler for value changed notification
*
* Color-balance interface.
*/
struct _GstColorBalanceInterface {
GTypeInterface iface;
/* virtual functions */
const GList * (* list_channels) (GstColorBalance *balance);
void (* set_value) (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
gint (* get_value) (GstColorBalance *balance,
GstColorBalanceChannel *channel);
GstColorBalanceType (*get_balance_type) (GstColorBalance *balance);
/* signals */
void (* value_changed) (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GST_EXPORT
GType gst_color_balance_get_type (void);
/* virtual class function wrappers */
GST_EXPORT
const GList *
gst_color_balance_list_channels (GstColorBalance *balance);
GST_EXPORT
void gst_color_balance_set_value (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
GST_EXPORT
gint gst_color_balance_get_value (GstColorBalance *balance,
GstColorBalanceChannel *channel);
GST_EXPORT
GstColorBalanceType
gst_color_balance_get_balance_type (GstColorBalance *balance);
/* trigger signal */
GST_EXPORT
void gst_color_balance_value_changed (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
G_END_DECLS
#endif /* __GST_COLOR_BALANCE_H__ */
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