/usr/include/babl-0.1/babl/babl.h is in libbabl-dev 0.1.10-1ubuntu2.
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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 | /* babl - dynamically extendable universal pixel conversion library.
* Copyright (C) 2005-2008, Øyvind Kolås.
*
* 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 3 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 _BABL_H
#define _BABL_H
#ifdef __cplusplus
extern "C" {
#endif
#define BABL_INSIDE_BABL_H
#include <babl/babl-macros.h>
#include <babl/babl-types.h>
#include <babl/babl-version.h>
#undef BABL_INSIDE_BABL_H
/**
* Initializes the babl library.
*/
void babl_init (void);
/**
* Deinitializes the babl library and frees any resources used when
* matched with the number of calls to babl_init().
*/
void babl_exit (void);
/**
* Returns the babl object representing the data type given by @name
* such as for example "u8", "u16" or "float".
*/
const Babl * babl_type (const char *name);
/**
* Returns the babl object representing the @horizontal and @vertical
* sampling such as for example 2, 2 for the chroma components in
* YCbCr.
*/
const Babl * babl_sampling (int horizontal,
int vertical);
/**
* Returns the babl object representing the color component given by
* @name such as for example "R", "cyan" or "CIE L".
*/
const Babl * babl_component (const char *name);
/**
* Returns the babl object representing the color model given by @name
* such as for example "RGB", "CMYK" or "CIE Lab".
*/
const Babl * babl_model (const char *name);
/**
* Returns the babl object representing the color format given by
* @name such as for example "RGB u8", "CMYK float" or "CIE Lab u16".
*/
const Babl * babl_format (const char *name);
/* Create a babl fish capable of converting from source_format to
* destination_format, source and destination can be either strings
* with the names of the formats or Babl-format objects.
*/
const Babl * babl_fish (const void *source_format,
const void *destination_format);
/** Process n pixels from source to destination using babl_fish,
* returns number of pixels converted.
*/
long babl_process (const Babl *babl_fish,
const void *source,
void *destination,
long n);
/**
* Returns a string decsribing a Babl object.
*/
const char * babl_get_name (const Babl *babl);
/**
* Returns whether the @format has an alpha channel.
*/
int babl_format_has_alpha (const Babl *format);
/**
* Returns the bytes per pixel for a babl color format.
*/
int babl_format_get_bytes_per_pixel (const Babl *format);
/**
* Returns the number of components for the given @format.
*/
int babl_format_get_n_components (const Babl *format);
/**
* Returns the type in the given @format for the given
* @component_index.
*/
const Babl * babl_format_get_type (const Babl *format,
int component_index);
/**
* Defines a new data type in babl. A data type that babl can have in
* its buffers requires conversions to and from "double" to be
* registered before passing sanity.
*
* babl_type_new (const char *name,
* "bits", int bits,
* ["min_val", double min_val,]
* ["max_val", double max_val,]
* NULL);
*/
const Babl * babl_type_new (void *first_arg,
...) BABL_ARG_NULL_TERMINATED;
/**
* Defines a new color component with babl.
*
* babl_component_new (const char *name,
* NULL);
*/
const Babl * babl_component_new (void *first_arg,
...) BABL_ARG_NULL_TERMINATED;
/**
* Defines a new color model in babl. If no name is provided a name is
* generated by concatenating the name of all the involved components.
*
* babl_model_new (["name", const char *name,]
* BablComponent *component1,
* [BablComponent *componentN, ...]
* NULL);
*/
const Babl * babl_model_new (void *first_arg,
...) BABL_ARG_NULL_TERMINATED;
/**
* Defines a new pixel format in babl. Provided BablType and|or
* BablSampling is valid for the following components as well. If no
* name is provided a (long) descriptive name is used.
*
* babl_format_new (["name", const char *name,]
* BablModel *model,
* [BablType *type,]
* [BablSampling, *sampling,]
* BablComponent *component1,
* [[BablType *type,]
* [BablSampling *sampling,]
* BablComponent *componentN,
* ...]
* ["planar",]
* NULL);
*/
const Babl * babl_format_new (const void *first_arg,
...) BABL_ARG_NULL_TERMINATED;
/*
* Defines a new pixel format in babl. With the specified data storage
* type and the given number of components. At the moment behavior of
* conversions are only well defined to other babl_format_n derived formats
* with the same number of components.
*/
const Babl *
babl_format_n (const Babl *type,
int components);
/**
* Returns whether the @format is a format_n type.
*/
int babl_format_is_format_n (const Babl *format);
/**
* Defines a new conversion between either two formats, two models or
* two types in babl.
*
* babl_conversion_new (<BablFormat *source, BablFormat *destination|
* BablModel *source, BablModel *destination|
* BablType *source, BablType *destination>,
* <"linear"|"planar">, <BablFuncLinear | BablFuncPlanar> conv_func,
* NULL);
*/
const Babl * babl_conversion_new (const void *first_arg,
...) BABL_ARG_NULL_TERMINATED;
/**
* create a new palette based format, name is optional pass in NULL to get
* an anonymous format. If you pass in with_alpha the format also gets
* an 8bit alpha channel. Returns the BablModel of the color model. If
* you pass in the same name the previous formats will be provided
* again.
*/
const Babl *babl_new_palette (const char *name,
const Babl **format_u8,
const Babl **format_u8_with_alpha);
/**
* check whether a format is a palette backed format.
*/
int babl_format_is_palette (const Babl *format);
/**
* Assign a palette to a palette format, the data is a single span of pixels
* representing the colors of the palette.
*/
void babl_palette_set_palette (const Babl *babl,
const Babl *format,
void *data,
int count);
/**
* reset a palette to initial state, frees up some caches that optimize
* conversions.
*/
void babl_palette_reset (const Babl *babl);
/**
* associate a data pointer with a format/model, this data can be accessed and
* used from the conversion functions, encoding color profiles, palettes or
* similar with the data, perhaps this should be made internal API, not
* accesible at all from
*/
void babl_set_user_data (const Babl *babl, void *data);
/**
* get data set with babl_set_user_data
*/
void * babl_get_user_data (const Babl *babl);
/*
* Backwards compatibility stuff
*
* NOTE: will most likely be removed in the first stable release!
*/
#ifndef BABL_DISABLE_DEPRECATED
#define babl_destroy babl_exit
#endif
#ifdef __cplusplus
}
#endif
#endif
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