1/*
 2 * Copyright (c) 2014-2016 Hayaki Saito
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 5 * this software and associated documentation files (the "Software"), to deal in
 6 * the Software without restriction, including without limitation the rights to
 7 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 8 * the Software, and to permit persons to whom the Software is furnished to do so,
 9 * subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
16 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
17 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
18 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 */
21
22#ifndef LIBSIXEL_QUANT_H
23#define LIBSIXEL_QUANT_H
24
25#ifdef __cplusplus
26extern "C" {
27#endif
28
29#include <sixel.h>
30
31/* choose colors using median-cut method */
32SIXELSTATUS
33sixel_quant_make_palette(
34    unsigned char           /* out */ **result,
35    unsigned const char     /* in */  *data,             /* data for sampling */
36    unsigned int            /* in */  length,            /* data size */
37    int                     /* in */  pixelformat,
38    unsigned int            /* in */  reqcolors,
39    unsigned int            /* in */  *ncolors,
40    unsigned int            /* in */  *origcolors,
41    int                     /* in */  methodForLargest,
42    int                     /* in */  methodForRep,
43    int                     /* in */  qualityMode,
44    sixel_allocator_t       /* in */  *allocator);
45
46
47/* apply color palette into specified pixel buffers */
48SIXELSTATUS
49sixel_quant_apply_palette(
50    sixel_index_t       /* out */ *result,
51    unsigned char       /* in */  *data,
52    int                 /* in */  width,
53    int                 /* in */  height,
54    int                 /* in */  pixelformat,
55    unsigned char       /* in */  *palette,
56    int                 /* in */  reqcolor,
57    int const           /* in */  methodForDiffuse,
58    int                 /* in */  foptimize,
59    int                 /* in */  foptimize_palette,
60    int                 /* in */  complexion,
61    unsigned short      /* in */  *cachetable,
62    int                 /* in */  *ncolor,
63    sixel_allocator_t   /* in */  *allocator);
64
65
66/* deallocate specified palette */
67void
68sixel_quant_free_palette(
69    unsigned char       /* in */ *data,
70    sixel_allocator_t   /* in */ *allocator);
71
72#if HAVE_TESTS
73int
74sixel_quant_tests_main(void);
75#endif
76
77#ifdef __cplusplus
78}
79#endif
80
81#endif /* LIBSIXEL_QUANT_H */
82
83/* emacs Local Variables:      */
84/* emacs mode: c               */
85/* emacs tab-width: 4          */
86/* emacs indent-tabs-mode: nil */
87/* emacs c-basic-offset: 4     */
88/* emacs End:                  */
89/* vim: set expandtab ts=4 sts=4 sw=4 : */
90/* EOF */