1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
/* GdkPixbuf library - GIF loader declarations
*
* Copyright (C) 1999 The Free Software Foundation
*
* Authors: Mark Crichton <crichton@gimp.org>
* Miguel de Icaza <miguel@gnu.org>
* Federico Mena-Quintero <federico@gimp.org>
* Havoc Pennington <hp@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GDK_PIXBUF_GIF_H
#define GDK_PIXBUF_GIF_H
#include "gdk-pixbuf-animation.h"
typedef enum {
/* Keep this frame and composite next frame over it */
/* (GIF disposal method 1) */
GDK_PIXBUF_FRAME_RETAIN,
/* Revert to background color before compositing next frame */
/* (GIF disposal method 2) */
GDK_PIXBUF_FRAME_DISPOSE,
/* Revert to previously-displayed composite image after
* displaying this frame
*/
/* (GIF disposal method 3) */
GDK_PIXBUF_FRAME_REVERT
} GdkPixbufFrameAction;
typedef struct _GdkPixbufGifAnim GdkPixbufGifAnim;
typedef struct _GdkPixbufGifAnimClass GdkPixbufGifAnimClass;
typedef struct _GdkPixbufFrame GdkPixbufFrame;
#define GDK_TYPE_PIXBUF_GIF_ANIM (gdk_pixbuf_gif_anim_get_type ())
#define GDK_PIXBUF_GIF_ANIM(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_GIF_ANIM, GdkPixbufGifAnim))
#define GDK_IS_PIXBUF_GIF_ANIM(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_GIF_ANIM))
#define GDK_PIXBUF_GIF_ANIM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_GIF_ANIM, GdkPixbufGifAnimClass))
#define GDK_IS_PIXBUF_GIF_ANIM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_GIF_ANIM))
#define GDK_PIXBUF_GIF_ANIM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_GIF_ANIM, GdkPixbufGifAnimClass))
/* Private part of the GdkPixbufGifAnim structure */
struct _GdkPixbufGifAnim {
GdkPixbufAnimation parent_instance;
/* Total length of animation */
int total_time;
/* Color map */
guchar color_map[256 * 3];
/* List of GdkPixbufFrame structures */
GList *frames;
/* bounding box size */
int width, height;
int loop;
/* Last rendered frames */
GdkPixbuf *last_frame_data;
GdkPixbufFrame *last_frame;
GdkPixbuf *last_frame_revert_data;
};
struct _GdkPixbufGifAnimClass {
GdkPixbufAnimationClass parent_class;
};
GType gdk_pixbuf_gif_anim_get_type (void) G_GNUC_CONST;
typedef struct _GdkPixbufGifAnimIter GdkPixbufGifAnimIter;
typedef struct _GdkPixbufGifAnimIterClass GdkPixbufGifAnimIterClass;
#define GDK_TYPE_PIXBUF_GIF_ANIM_ITER (gdk_pixbuf_gif_anim_iter_get_type ())
#define GDK_PIXBUF_GIF_ANIM_ITER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_GIF_ANIM_ITER, GdkPixbufGifAnimIter))
#define GDK_IS_PIXBUF_GIF_ANIM_ITER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_GIF_ANIM_ITER))
#define GDK_PIXBUF_GIF_ANIM_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_GIF_ANIM_ITER, GdkPixbufGifAnimIterClass))
#define GDK_IS_PIXBUF_GIF_ANIM_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_GIF_ANIM_ITER))
#define GDK_PIXBUF_GIF_ANIM_ITER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_GIF_ANIM_ITER, GdkPixbufGifAnimIterClass))
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
struct _GdkPixbufGifAnimIter {
GdkPixbufAnimationIter parent_instance;
GdkPixbufGifAnim *gif_anim;
GTimeVal start_time;
GTimeVal current_time;
/* Time in milliseconds into this run of the animation */
gint position;
GList *current_frame;
gint first_loop_slowness;
};
G_GNUC_END_IGNORE_DEPRECATIONS
struct _GdkPixbufGifAnimIterClass {
GdkPixbufAnimationIterClass parent_class;
};
GType gdk_pixbuf_gif_anim_iter_get_type (void) G_GNUC_CONST;
struct _GdkPixbufFrame {
/* Compressed frame data */
GByteArray *lzw_data;
guint8 lzw_code_size;
/* Position of frame data in image */
int x_offset;
int y_offset;
guint16 width;
guint16 height;
/* Layout of pixels */
gboolean interlace;
/* Color map */
gboolean color_map_allocated;
guchar *color_map;
/* Transparency */
int transparent_index;
/* Frame duration in ms */
int delay_time;
/* Sum of preceding delay times */
int elapsed;
/* Overlay mode */
GdkPixbufFrameAction action;
};
#endif
|
