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124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/* GStreamer Color Balance
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* color-balance.h: image color balance interface design
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_COLOR_BALANCE_H__
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#define __GST_COLOR_BALANCE_H__
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#include <gst/gst.h>
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#include <gst/video/colorbalancechannel.h>
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G_BEGIN_DECLS
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#define GST_TYPE_COLOR_BALANCE \
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(gst_color_balance_get_type ())
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#define GST_COLOR_BALANCE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, GstColorBalance))
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#define GST_IS_COLOR_BALANCE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
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#define GST_COLOR_BALANCE_GET_INTERFACE(inst) \
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(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_COLOR_BALANCE, GstColorBalanceInterface))
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typedef struct _GstColorBalance GstColorBalance;
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typedef struct _GstColorBalanceInterface GstColorBalanceInterface;
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/**
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* GstColorBalanceType:
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* @GST_COLOR_BALANCE_HARDWARE: Color balance is implemented with dedicated
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* hardware.
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* @GST_COLOR_BALANCE_SOFTWARE: Color balance is implemented via software
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* processing.
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*
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* An enumeration indicating whether an element implements color balancing
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* operations in software or in dedicated hardware. In general, dedicated
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* hardware implementations (such as those provided by xvimagesink) are
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* preferred.
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*/
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typedef enum
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{
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GST_COLOR_BALANCE_HARDWARE,
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GST_COLOR_BALANCE_SOFTWARE
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} GstColorBalanceType;
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/**
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* GstColorBalanceInterface:
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* @iface: the parent interface
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* @get_balance_type: implementation type
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* @list_channels: list handled channels
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* @set_value: set a channel value
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* @get_value: get a channel value
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* @value_changed: default handler for value changed notification
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*
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* Color-balance interface.
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*/
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struct _GstColorBalanceInterface {
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GTypeInterface iface;
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/* virtual functions */
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const GList * (* list_channels) (GstColorBalance *balance);
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void (* set_value) (GstColorBalance *balance,
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GstColorBalanceChannel *channel,
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gint value);
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gint (* get_value) (GstColorBalance *balance,
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GstColorBalanceChannel *channel);
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GstColorBalanceType (*get_balance_type) (GstColorBalance *balance);
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/* signals */
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void (* value_changed) (GstColorBalance *balance,
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GstColorBalanceChannel *channel,
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gint value);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_VIDEO_API
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GType gst_color_balance_get_type (void);
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/* virtual class function wrappers */
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GST_VIDEO_API
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const GList *
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gst_color_balance_list_channels (GstColorBalance *balance);
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GST_VIDEO_API
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void gst_color_balance_set_value (GstColorBalance *balance,
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GstColorBalanceChannel *channel,
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gint value);
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GST_VIDEO_API
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gint gst_color_balance_get_value (GstColorBalance *balance,
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GstColorBalanceChannel *channel);
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GST_VIDEO_API
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GstColorBalanceType
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gst_color_balance_get_balance_type (GstColorBalance *balance);
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/* trigger signal */
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GST_VIDEO_API
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void gst_color_balance_value_changed (GstColorBalance *balance,
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GstColorBalanceChannel *channel,
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gint value);
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G_END_DECLS
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#endif /* __GST_COLOR_BALANCE_H__ */
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