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comparison mupdf-source/thirdparty/leptonica/src/pngiostub.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*====================================================================*
2 - Copyright (C) 2001 Leptonica. All rights reserved.
3 -
4 - Redistribution and use in source and binary forms, with or without
5 - modification, are permitted provided that the following conditions
6 - are met:
7 - 1. Redistributions of source code must retain the above copyright
8 - notice, this list of conditions and the following disclaimer.
9 - 2. Redistributions in binary form must reproduce the above
10 - copyright notice, this list of conditions and the following
11 - disclaimer in the documentation and/or other materials
12 - provided with the distribution.
13 -
14 - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
18 - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23 - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *====================================================================*/
26
27 /*!
28 * \file pngiostub.c
29 * <pre>
30 *
31 * Stubs for pngio.c functions
32 * </pre>
33 */
34
35 #ifdef HAVE_CONFIG_H
36 #include <config_auto.h>
37 #endif /* HAVE_CONFIG_H */
38
39 #include "allheaders.h"
40
41 /* --------------------------------------------*/
42 #if !HAVE_LIBPNG /* defined in environ.h */
43 /* --------------------------------------------*/
44
45 PIX * pixReadStreamPng(FILE *fp)
46 {
47 return (PIX * )ERROR_PTR("function not present", __func__, NULL);
48 }
49
50 /* ----------------------------------------------------------------------*/
51
52 l_ok readHeaderPng(const char *filename, l_int32 *pwidth, l_int32 *pheight,
53 l_int32 *pbps, l_int32 *pspp, l_int32 *piscmap)
54 {
55 return ERROR_INT("function not present", __func__, 1);
56 }
57
58 /* ----------------------------------------------------------------------*/
59
60 l_ok freadHeaderPng(FILE *fp, l_int32 *pwidth, l_int32 *pheight,
61 l_int32 *pbps, l_int32 *pspp, l_int32 *piscmap)
62 {
63 return ERROR_INT("function not present", __func__, 1);
64 }
65
66 /* ----------------------------------------------------------------------*/
67
68 l_ok readHeaderMemPng(const l_uint8 *data, size_t size, l_int32 *pwidth,
69 l_int32 *pheight, l_int32 *pbps, l_int32 *pspp,
70 l_int32 *piscmap)
71 {
72 return ERROR_INT("function not present", __func__, 1);
73 }
74
75 /* ----------------------------------------------------------------------*/
76
77 l_int32 fgetPngResolution(FILE *fp, l_int32 *pxres, l_int32 *pyres)
78 {
79 return ERROR_INT("function not present", __func__, 1);
80 }
81
82 /* ----------------------------------------------------------------------*/
83
84 l_ok isPngInterlaced(const char *filename, l_int32 *pinterlaced)
85 {
86 return ERROR_INT("function not present", __func__, 1);
87 }
88
89 /* ----------------------------------------------------------------------*/
90
91 l_ok fgetPngColormapInfo(FILE *fp, PIXCMAP **pcmap, l_int32 *ptransparency)
92 {
93 return ERROR_INT("function not present", __func__, 1);
94 }
95
96 /* ----------------------------------------------------------------------*/
97
98 l_ok pixWritePng(const char *filename, PIX *pix, l_float32 gamma)
99 {
100 return ERROR_INT("function not present", __func__, 1);
101 }
102
103 /* ----------------------------------------------------------------------*/
104
105 l_ok pixWriteStreamPng(FILE *fp, PIX *pix, l_float32 gamma)
106 {
107 return ERROR_INT("function not present", __func__, 1);
108 }
109
110 /* ----------------------------------------------------------------------*/
111
112 l_ok pixSetZlibCompression(PIX *pix, l_int32 compval)
113
114 {
115 return ERROR_INT("function not present", __func__, 1);
116 }
117
118 /* ----------------------------------------------------------------------*/
119
120 void l_pngSetReadStrip16To8(l_int32 flag)
121 {
122 L_ERROR("function not present\n", __func__);
123 return;
124 }
125
126 /* ----------------------------------------------------------------------*/
127
128 PIX * pixReadMemPng(const l_uint8 *filedata, size_t filesize)
129 {
130 return (PIX * )ERROR_PTR("function not present", __func__, NULL);
131 }
132
133 /* ----------------------------------------------------------------------*/
134
135 l_ok pixWriteMemPng(l_uint8 **pfiledata, size_t *pfilesize, PIX *pix,
136 l_float32 gamma)
137 {
138 return ERROR_INT("function not present", __func__, 1);
139 }
140
141 /* --------------------------------------------*/
142 #endif /* !HAVE_LIBPNG */
143 /* --------------------------------------------*/