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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/** \file
* \brief Utilities
*
* See Copyright Notice in im_lib.h
*/
#ifndef __IM_UTIL_H
#define __IM_UTIL_H
#if defined(__cplusplus)
extern "C" {
#endif
/** \defgroup util Utilities
* \par
* See \ref im_util.h
* @{
*/
#define IM_MIN(_a, _b) (_a < _b? _a: _b)
#define IM_MAX(_a, _b) (_a > _b? _a: _b)
/** @} */
/** \defgroup str String Utilities
* \par
* See \ref im_util.h
* \ingroup util */
/** Check if the two strings are equal.
* \ingroup str */
int imStrEqual(const char* str1, const char* str2);
/** Calculate the size of the string but limited to max_len.
* \ingroup str */
int imStrNLen(const char* str, int max_len);
/** Check if the data is a string.
* \ingroup str */
int imStrCheck(const void* data, int count);
/** \defgroup imageutil Raw Data Utilities
* \par
* See \ref im_util.h
* \ingroup imagerep */
/** Returns the size of the data buffer.
*
* \verbatim im.ImageDataSize(width: number, height: number, color_mode: number, data_type: number) -> datasize: number [in Lua 5] \endverbatim
* \ingroup imageutil */
int imImageDataSize(int width, int height, int color_mode, int data_type);
/** Returns the size of one line of the data buffer. \n
* This depends if the components are packed. If packed includes all components, if not includes only one.
*
* \verbatim im.ImageLineSize(width: number, color_mode: number, data_type: number) -> linesize: number [in Lua 5] \endverbatim
* \ingroup imageutil */
int imImageLineSize(int width, int color_mode, int data_type);
/** Returns the number of elements of one line of the data buffer. \n
* This depends if the components are packed. If packed includes all components, if not includes only one.
*
* \verbatim im.ImageLineCount(width: number, color_mode: number) -> linecount: number [in Lua 5] \endverbatim
* \ingroup imageutil */
int imImageLineCount(int width, int color_mode);
/** Check if the combination color_mode+data_type is valid.
*
* \verbatim im.ImageCheckFormat(color_mode: number, data_type: number) -> check: boolean [in Lua 5] \endverbatim
* \ingroup imageutil */
int imImageCheckFormat(int color_mode, int data_type);
/** \defgroup colorutl Color Utilities
* \par
* See \ref im_util.h
* \ingroup util */
/** Encode RGB components in a long for palete usage. \n
* "long" definition is compatible with the CD library definition.
*
* \verbatim im.ColorEncode(red: number, green: number, blue: number) -> color: lightuserdata [in Lua 5] \endverbatim
* \ingroup colorutl */
long imColorEncode(unsigned char red, unsigned char green, unsigned char blue);
/** Decode RGB components from a long for palete usage. \n
* "long" definition is compatible with the CD library definition.
*
* \verbatim im.ColorDecode(color: lightuserdata) -> red: number, green: number, blue: number [in Lua 5] \endverbatim
* \ingroup colorutl */
void imColorDecode(unsigned char *red, unsigned char *green, unsigned char *blue, long color);
/** \defgroup colormodeutl Color Mode Utilities
* \par
* See \ref im_util.h
* \ingroup imagerep */
/** Returns the color mode name.
*
* \verbatim im.ColorModeSpaceName(color_mode: number) -> name: string [in Lua 5] \endverbatim
* \ingroup colormodeutl */
const char* imColorModeSpaceName(int color_mode);
/** Returns the number of components of the color space including alpha.
*
* \verbatim im.ColorModeDepth(color_mode: number) -> depth: number [in Lua 5] \endverbatim
* \ingroup colormodeutl */
int imColorModeDepth(int color_mode);
/** Returns the color space of the color mode.
*
* \verbatim im.ColorModeSpace(color_mode: number) -> color_space: number [in Lua 5] \endverbatim
* \ingroup colormodeutl */
#define imColorModeSpace(_cm) (_cm & 0xFF)
/** Check if the two color modes match. Only the color space is compared.
*
* \verbatim im.ColorModeMatch(color_mode1: number, color_mode2: number) -> match: boolean [in Lua 5] \endverbatim
* \ingroup colormodeutl */
#define imColorModeMatch(_cm1, _cm2) (imColorModeSpace(_cm1) == imColorModeSpace(_cm2))
/** Check if the color mode has an alpha channel.
*
* \verbatim im.ColorModeHasAlpha(color_mode: number) -> has_alpha: boolean [in Lua 5] \endverbatim
* \ingroup colormodeutl */
#define imColorModeHasAlpha(_cm) (_cm & IM_ALPHA)
/** Check if the color mode components are packed in one plane.
*
* \verbatim im.ColorModeIsPacked(color_mode: number) -> is_packed: boolean [in Lua 5] \endverbatim
* \ingroup colormodeutl */
#define imColorModeIsPacked(_cm) (_cm & IM_PACKED)
/** Check if the color mode orients the image from top down to bottom.
*
* \verbatim im.ColorModeIsTopDown(color_mode: number) -> is_top_down: boolean [in Lua 5] \endverbatim
* \ingroup colormodeutl */
#define imColorModeIsTopDown(_cm) (_cm & IM_TOPDOWN)
/** Returns the color space of the equivalent display bitmap image. \n
* Original packing and alpha are ignored. Returns IM_RGB, IM_GRAY, IM_MAP or IM_BINARY.
*
* \verbatim im.ColorModeToBitmap(color_mode: number) -> color_space: number [in Lua 5] \endverbatim
* \ingroup colormodeutl */
int imColorModeToBitmap(int color_mode);
/** Check if the color mode and data_type defines a display bitmap image.
*
* \verbatim im.ColorModeIsBitmap(color_mode: number, data_type: number) -> is_bitmap: boolean [in Lua 5] \endverbatim
* \ingroup colormodeutl */
int imColorModeIsBitmap(int color_mode, int data_type);
/** \defgroup datatypeutl Data Type Utilities
* \par
* See \ref im_util.h
* \ingroup util
* @{
*/
typedef unsigned char imbyte;
typedef unsigned short imushort;
#define IM_BYTECROP(_v) (_v < 0? 0: _v > 255? 255: _v)
#define IM_CROPMAX(_v, _max) (_v < 0? 0: _v > _max? _max: _v)
/** @} */
/** Returns the size in bytes of a specified numeric data type.
*
* \verbatim im.DataTypeSize(data_type: number) -> size: number [in Lua 5] \endverbatim
* \ingroup datatypeutl */
int imDataTypeSize(int data_type);
/** Returns the numeric data type name given its identifier.
*
* \verbatim im.DataTypeName(data_type: number) -> name: string [in Lua 5] \endverbatim
* \ingroup datatypeutl */
const char* imDataTypeName(int data_type);
/** Returns the maximum value of an integer data type. For floating point returns 0.
*
* \verbatim im.DataTypeIntMax(data_type: number) -> int_max: number [in Lua 5] \endverbatim
* \ingroup datatypeutl */
unsigned long imDataTypeIntMax(int data_type);
/** Returns the minimum value of an integer data type. For floating point returns 0.
*
* \verbatim im.DataTypeIntMin(data_type: number) -> int_min: number [in Lua 5] \endverbatim
* \ingroup datatypeutl */
long imDataTypeIntMin(int data_type);
/** \defgroup bin Binary Data Utilities
* \par
* See \ref im_util.h
* \ingroup util */
/** CPU Byte Orders.
* \ingroup bin */
enum imByteOrder
{
IM_LITTLEENDIAN, /**< Little Endian - The most significant byte is on the right end of a word. Used by Intel processors. */
IM_BIGENDIAN /**< Big Endian - The most significant byte is on the left end of a word. Used by Motorola processors, also is the network standard byte order. */
};
/** Returns the current CPU byte order.
* \ingroup bin */
int imBinCPUByteOrder(void);
/** Changes the byte order of an array of 2, 4 or 8 byte values.
* \ingroup bin */
void imBinSwapBytes(void *data, int count, int size);
/** Changes the byte order of an array of 2 byte values.
* \ingroup bin */
void imBinSwapBytes2(void *data, int count);
/** Inverts the byte order of the 4 byte values
* \ingroup bin */
void imBinSwapBytes4(void *data, int count);
/** Inverts the byte order of the 8 byte values
* \ingroup bin */
void imBinSwapBytes8(void *data, int count);
/** \defgroup compress Data Compression Utilities
* \par
* Deflate compression support uses zlib version 1.2.3. \n
* http://www.zlib.org/ \n
* Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler
* \par
* LZF compression support uses libLZF version 1.51. \n
* http://liblzf.plan9.de/ \n
* Copyright (C) 2000-2005 Marc Alexander Lehmann
* See \ref im_util.h
* \ingroup util */
/** Compresses the data using the ZLIB Deflate compression. \n
* The destination buffer must be at least 0.1% larger than source_size plus 12 bytes. \n
* It compresses raw byte data. zip_quality can be 1 to 9. \n
* Returns the size of the compressed buffer or zero if failed.
* \ingroup compress */
int imCompressDataZ(const void* src_data, int src_size, void* dst_data, int dst_size, int zip_quality);
/** Uncompresses the data compressed with the ZLIB Deflate compression. \n
* Returns zero if failed.
* \ingroup compress */
int imCompressDataUnZ(const void* src_data, int src_size, void* dst_data, int dst_size);
/** Compresses the data using the libLZF compression. \n
* Returns the size of the compressed buffer or zero if failed.
* \ingroup compress */
int imCompressDataLZF(const void* src_data, int src_size, void* dst_data, int dst_size, int zip_quality);
/** Uncompresses the data compressed with the libLZF compression.
* Returns zero if failed.
* \ingroup compress */
int imCompressDataUnLZF(const void* src_data, int src_size, void* dst_data, int dst_size);
#if defined(__cplusplus)
}
#endif
#endif
|
