1 /* GStreamer Color Balance

     2  * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>

     3  *

     4  * color-balance.h: image color balance interface design

     5  *

     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.

    10  *

    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.

    15  *

    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.

    20  */

    21 

    22 #ifndef __GST_COLOR_BALANCE_H__

    23 #define __GST_COLOR_BALANCE_H__

    24 

    25 #include <gst/gst.h>

    26 #include <gst/interfaces/colorbalancechannel.h>

    27 #include <gst/interfaces/interfaces-enumtypes.h>

    28 

    29 G_BEGIN_DECLS

    30 

    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, \

    35                                                  GstColorBalance))

    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))

    45   

    46 #define GST_COLOR_BALANCE_TYPE(klass) (klass->balance_type)

    47 

    48 typedef struct _GstColorBalance GstColorBalance;

    49   

    50 typedef enum

    51 {

    52   GST_COLOR_BALANCE_HARDWARE,

    53   GST_COLOR_BALANCE_SOFTWARE

    54 } GstColorBalanceType;

    55 

    56 typedef struct _GstColorBalanceClass {

    57   GTypeInterface klass;

    58 

    59   GstColorBalanceType balance_type;

    60   

    61   /* virtual functions */

    62   const GList * (* list_channels) (GstColorBalance        *balance);

    63 

    64   void          (* set_value)     (GstColorBalance        *balance,

    65                                    GstColorBalanceChannel *channel,

    66                                    gint                    value);

    67   gint          (* get_value)     (GstColorBalance        *balance,

    68                                    GstColorBalanceChannel *channel);

    69 

    70   /* signals */

    71   void (* value_changed) (GstColorBalance        *balance,

    72                           GstColorBalanceChannel *channel,

    73                           gint                    value);

    74 

    75   gpointer _gst_reserved[GST_PADDING];

    76 } GstColorBalanceClass;

    77 #ifdef __SYMBIAN32__

    78 IMPORT_C

    79 #endif

    80 

    81 

    82 GType   gst_color_balance_get_type      (void);

    83 

    84 /* virtual class function wrappers */

    85 #ifdef __SYMBIAN32__

    86 IMPORT_C

    87 #endif

    88 

    89 const GList *

    90         gst_color_balance_list_channels (GstColorBalance        *balance);

    91 #ifdef __SYMBIAN32__

    92 IMPORT_C

    93 #endif

    94 

    95 void    gst_color_balance_set_value     (GstColorBalance        *balance,

    96                                          GstColorBalanceChannel *channel,

    97                                          gint                    value);

    98 #ifdef __SYMBIAN32__

    99 IMPORT_C

   100 #endif

   101 

   102 gint    gst_color_balance_get_value     (GstColorBalance        *balance,

   103                                          GstColorBalanceChannel *channel);

   104 

   105 /* trigger signal */

   106 #ifdef __SYMBIAN32__

   107 IMPORT_C

   108 #endif

   109 

   110 void    gst_color_balance_value_changed (GstColorBalance        *balance,

   111                                          GstColorBalanceChannel *channel,

   112                                          gint                    value);

   113 

   114 G_END_DECLS

   115 

   116 #endif /* __GST_COLOR_BALANCE_H__ */