Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 1 | |
| 2 | /* pngset.c - storage of image information into info struct |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 3 | * |
Glenn Randers-Pehrson | 7908421 | 2008-08-04 13:31:41 -0500 | [diff] [blame^] | 4 | * Last changed in libpng 1.4.0 [August 4, 2008] |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 5 | * For conditions of distribution and use, see copyright notice in png.h |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 6 | * Copyright (c) 1998-2008 Glenn Randers-Pehrson |
Glenn Randers-Pehrson | d436672 | 2000-06-04 14:29:29 -0500 | [diff] [blame] | 7 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
| 8 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 9 | * |
| 10 | * The functions here are used during reads to store data from the file |
| 11 | * into the info struct, and during writes to store application data |
| 12 | * into the info struct for writing into the file. This abstracts the |
| 13 | * info struct and allows us to change the structure in the future. |
| 14 | */ |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 15 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 16 | #include "png.h" |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 17 | #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 18 | #include "pngpriv.h" |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 19 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 20 | #if defined(PNG_bKGD_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 21 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 22 | png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background) |
| 23 | { |
| 24 | png_debug1(1, "in %s storage function\n", "bKGD"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 25 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 26 | return; |
| 27 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 28 | png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 29 | info_ptr->valid |= PNG_INFO_bKGD; |
| 30 | } |
| 31 | #endif |
| 32 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 33 | #if defined(PNG_cHRM_SUPPORTED) |
| 34 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 35 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 36 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, |
| 37 | double white_x, double white_y, double red_x, double red_y, |
| 38 | double green_x, double green_y, double blue_x, double blue_y) |
| 39 | { |
| 40 | png_debug1(1, "in %s storage function\n", "cHRM"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 41 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 42 | return; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 43 | if (!(white_x || white_y || red_x || red_y || green_x || green_y || |
| 44 | blue_x || blue_y)) |
| 45 | { |
| 46 | png_warning(png_ptr, |
| 47 | "Ignoring attempt to set all-zero chromaticity values"); |
| 48 | return; |
| 49 | } |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 50 | if (white_x < 0.0 || white_y < 0.0 || |
| 51 | red_x < 0.0 || red_y < 0.0 || |
| 52 | green_x < 0.0 || green_y < 0.0 || |
| 53 | blue_x < 0.0 || blue_y < 0.0) |
| 54 | { |
| 55 | png_warning(png_ptr, |
| 56 | "Ignoring attempt to set negative chromaticity value"); |
| 57 | return; |
| 58 | } |
| 59 | if (white_x > 21474.83 || white_y > 21474.83 || |
| 60 | red_x > 21474.83 || red_y > 21474.83 || |
| 61 | green_x > 21474.83 || green_y > 21474.83 || |
| 62 | blue_x > 21474.83 || blue_y > 21474.83) |
| 63 | { |
| 64 | png_warning(png_ptr, |
| 65 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 66 | return; |
| 67 | } |
| 68 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 69 | info_ptr->x_white = (float)white_x; |
| 70 | info_ptr->y_white = (float)white_y; |
| 71 | info_ptr->x_red = (float)red_x; |
| 72 | info_ptr->y_red = (float)red_y; |
| 73 | info_ptr->x_green = (float)green_x; |
| 74 | info_ptr->y_green = (float)green_y; |
| 75 | info_ptr->x_blue = (float)blue_x; |
| 76 | info_ptr->y_blue = (float)blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 77 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 78 | info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); |
| 79 | info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 80 | info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5); |
| 81 | info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 82 | info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); |
| 83 | info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 84 | info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5); |
| 85 | info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 86 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 87 | info_ptr->valid |= PNG_INFO_cHRM; |
| 88 | } |
| 89 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 90 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 91 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 92 | png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 93 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, |
| 94 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, |
| 95 | png_fixed_point blue_x, png_fixed_point blue_y) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 96 | { |
| 97 | png_debug1(1, "in %s storage function\n", "cHRM"); |
| 98 | if (png_ptr == NULL || info_ptr == NULL) |
| 99 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 100 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 101 | if (!(white_x || white_y || red_x || red_y || green_x || green_y || |
| 102 | blue_x || blue_y)) |
| 103 | { |
| 104 | png_warning(png_ptr, |
| 105 | "Ignoring attempt to set all-zero chromaticity values"); |
| 106 | return; |
| 107 | } |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 108 | if (white_x < 0 || white_y < 0 || |
| 109 | red_x < 0 || red_y < 0 || |
| 110 | green_x < 0 || green_y < 0 || |
| 111 | blue_x < 0 || blue_y < 0) |
| 112 | { |
| 113 | png_warning(png_ptr, |
| 114 | "Ignoring attempt to set negative chromaticity value"); |
| 115 | return; |
| 116 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 117 | if (white_x > (png_fixed_point) PNG_UINT_31_MAX || |
| 118 | white_y > (png_fixed_point) PNG_UINT_31_MAX || |
| 119 | red_x > (png_fixed_point) PNG_UINT_31_MAX || |
| 120 | red_y > (png_fixed_point) PNG_UINT_31_MAX || |
| 121 | green_x > (png_fixed_point) PNG_UINT_31_MAX || |
| 122 | green_y > (png_fixed_point) PNG_UINT_31_MAX || |
| 123 | blue_x > (png_fixed_point) PNG_UINT_31_MAX || |
| 124 | blue_y > (png_fixed_point) PNG_UINT_31_MAX ) |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 125 | { |
| 126 | png_warning(png_ptr, |
| 127 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 128 | return; |
| 129 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 130 | info_ptr->int_x_white = white_x; |
| 131 | info_ptr->int_y_white = white_y; |
| 132 | info_ptr->int_x_red = red_x; |
| 133 | info_ptr->int_y_red = red_y; |
| 134 | info_ptr->int_x_green = green_x; |
| 135 | info_ptr->int_y_green = green_y; |
| 136 | info_ptr->int_x_blue = blue_x; |
| 137 | info_ptr->int_y_blue = blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 138 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 139 | info_ptr->x_white = (float)(white_x/100000.); |
| 140 | info_ptr->y_white = (float)(white_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 141 | info_ptr->x_red = (float)( red_x/100000.); |
| 142 | info_ptr->y_red = (float)( red_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 143 | info_ptr->x_green = (float)(green_x/100000.); |
| 144 | info_ptr->y_green = (float)(green_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 145 | info_ptr->x_blue = (float)( blue_x/100000.); |
| 146 | info_ptr->y_blue = (float)( blue_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 147 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 148 | info_ptr->valid |= PNG_INFO_cHRM; |
| 149 | } |
| 150 | #endif |
| 151 | #endif |
| 152 | |
| 153 | #if defined(PNG_gAMA_SUPPORTED) |
| 154 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 155 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 156 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 157 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 158 | double gamma; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 159 | png_debug1(1, "in %s storage function\n", "gAMA"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 160 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 161 | return; |
| 162 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 163 | /* Check for overflow */ |
| 164 | if (file_gamma > 21474.83) |
| 165 | { |
| 166 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
| 167 | gamma=21474.83; |
| 168 | } |
| 169 | else |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 170 | gamma = file_gamma; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 171 | info_ptr->gamma = (float)gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 172 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 173 | info_ptr->int_gamma = (int)(gamma*100000.+.5); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 174 | #endif |
| 175 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 176 | if (gamma == 0.0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 177 | png_warning(png_ptr, "Setting gamma=0"); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 178 | } |
| 179 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 180 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 181 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 182 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 183 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 184 | png_fixed_point gamma; |
| 185 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 186 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 187 | if (png_ptr == NULL || info_ptr == NULL) |
| 188 | return; |
| 189 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 190 | if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 191 | { |
| 192 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 193 | gamma=PNG_UINT_31_MAX; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 194 | } |
| 195 | else |
| 196 | { |
| 197 | if (int_gamma < 0) |
| 198 | { |
| 199 | png_warning(png_ptr, "Setting negative gamma to zero"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 200 | gamma = 0; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 201 | } |
| 202 | else |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 203 | gamma = int_gamma; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 204 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 205 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 206 | info_ptr->gamma = (float)(gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 207 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 208 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 209 | info_ptr->int_gamma = gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 210 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 211 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 212 | if (gamma == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 213 | png_warning(png_ptr, "Setting gamma=0"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 214 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 215 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 216 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 217 | #if defined(PNG_hIST_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 218 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 219 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 220 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 221 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 222 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 223 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 224 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 225 | return; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 226 | if (info_ptr->num_palette == 0 || info_ptr->num_palette |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 227 | > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 228 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 229 | png_warning(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 230 | "Invalid palette size, hIST allocation skipped"); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 231 | return; |
| 232 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 233 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 234 | #ifdef PNG_FREE_ME_SUPPORTED |
| 235 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 236 | #endif |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 237 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version |
| 238 | 1.2.1 */ |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 239 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 240 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 241 | if (png_ptr->hist == NULL) |
| 242 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 243 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 244 | return; |
| 245 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 246 | |
| 247 | for (i = 0; i < info_ptr->num_palette; i++) |
| 248 | png_ptr->hist[i] = hist[i]; |
| 249 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 250 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 251 | |
| 252 | #ifdef PNG_FREE_ME_SUPPORTED |
| 253 | info_ptr->free_me |= PNG_FREE_HIST; |
| 254 | #else |
| 255 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 256 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 257 | } |
| 258 | #endif |
| 259 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 260 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 261 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 262 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 263 | int color_type, int interlace_type, int compression_type, |
| 264 | int filter_type) |
| 265 | { |
| 266 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 267 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 268 | return; |
| 269 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 270 | /* check for width and height valid values */ |
| 271 | if (width == 0 || height == 0) |
| 272 | png_error(png_ptr, "Image width or height is zero in IHDR"); |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 273 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
| 274 | if (width > png_ptr->user_width_max || height > png_ptr->user_height_max) |
| 275 | png_error(png_ptr, "image size exceeds user limits in IHDR"); |
| 276 | #else |
| 277 | if (width > PNG_USER_WIDTH_MAX || height > PNG_USER_HEIGHT_MAX) |
| 278 | png_error(png_ptr, "image size exceeds user limits in IHDR"); |
| 279 | #endif |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 280 | if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 281 | png_error(png_ptr, "Invalid image size in IHDR"); |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 282 | if ( width > (PNG_UINT_32_MAX |
| 283 | >> 3) /* 8-byte RGBA pixels */ |
| 284 | - 64 /* bigrowbuf hack */ |
| 285 | - 1 /* filter byte */ |
| 286 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 287 | - 8) /* extra max_pixel_depth pad */ |
| 288 | png_warning(png_ptr, "Width is too large for libpng to process pixels"); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 289 | |
| 290 | /* check other values */ |
| 291 | if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && |
| 292 | bit_depth != 8 && bit_depth != 16) |
| 293 | png_error(png_ptr, "Invalid bit depth in IHDR"); |
| 294 | |
| 295 | if (color_type < 0 || color_type == 1 || |
| 296 | color_type == 5 || color_type > 6) |
| 297 | png_error(png_ptr, "Invalid color type in IHDR"); |
| 298 | |
| 299 | if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || |
| 300 | ((color_type == PNG_COLOR_TYPE_RGB || |
| 301 | color_type == PNG_COLOR_TYPE_GRAY_ALPHA || |
| 302 | color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) |
| 303 | png_error(png_ptr, "Invalid color type/bit depth combination in IHDR"); |
| 304 | |
| 305 | if (interlace_type >= PNG_INTERLACE_LAST) |
| 306 | png_error(png_ptr, "Unknown interlace method in IHDR"); |
| 307 | |
| 308 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 309 | png_error(png_ptr, "Unknown compression method in IHDR"); |
| 310 | |
| 311 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 312 | /* Accept filter_method 64 (intrapixel differencing) only if |
| 313 | * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and |
| 314 | * 2. Libpng did not read a PNG signature (this filter_method is only |
| 315 | * used in PNG datastreams that are embedded in MNG datastreams) and |
| 316 | * 3. The application called png_permit_mng_features with a mask that |
| 317 | * included PNG_FLAG_MNG_FILTER_64 and |
| 318 | * 4. The filter_method is 64 and |
| 319 | * 5. The color_type is RGB or RGBA |
| 320 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 321 | if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted) |
| 322 | png_warning(png_ptr, "MNG features are not allowed in a PNG datastream"); |
| 323 | if (filter_type != PNG_FILTER_TYPE_BASE) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 324 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 325 | if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 326 | (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && |
| 327 | ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && |
Glenn Randers-Pehrson | e647462 | 2006-03-04 16:50:47 -0600 | [diff] [blame] | 328 | (color_type == PNG_COLOR_TYPE_RGB || |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 329 | color_type == PNG_COLOR_TYPE_RGB_ALPHA))) |
| 330 | png_error(png_ptr, "Unknown filter method in IHDR"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 331 | if (png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 332 | png_warning(png_ptr, "Invalid filter method in IHDR"); |
| 333 | } |
| 334 | #else |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 335 | if (filter_type != PNG_FILTER_TYPE_BASE) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 336 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 337 | #endif |
| 338 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 339 | info_ptr->width = width; |
| 340 | info_ptr->height = height; |
| 341 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 342 | info_ptr->color_type =(png_byte) color_type; |
| 343 | info_ptr->compression_type = (png_byte)compression_type; |
| 344 | info_ptr->filter_type = (png_byte)filter_type; |
| 345 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 346 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 347 | info_ptr->channels = 1; |
| 348 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 349 | info_ptr->channels = 3; |
| 350 | else |
| 351 | info_ptr->channels = 1; |
| 352 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 353 | info_ptr->channels++; |
| 354 | info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 355 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 356 | /* check for potential overflow */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 357 | if (width > (PNG_UINT_32_MAX |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 358 | >> 3) /* 8-byte RGBA pixels */ |
| 359 | - 64 /* bigrowbuf hack */ |
| 360 | - 1 /* filter byte */ |
| 361 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 362 | - 8) /* extra max_pixel_depth pad */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 363 | info_ptr->rowbytes = 0; |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 364 | else |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 365 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 366 | } |
| 367 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 368 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 369 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 370 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 371 | png_int_32 offset_x, png_int_32 offset_y, int unit_type) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 372 | { |
| 373 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 374 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 375 | return; |
| 376 | |
| 377 | info_ptr->x_offset = offset_x; |
| 378 | info_ptr->y_offset = offset_y; |
| 379 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 380 | info_ptr->valid |= PNG_INFO_oFFs; |
| 381 | } |
| 382 | #endif |
| 383 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 384 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 385 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 386 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 387 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 388 | png_charp units, png_charpp params) |
| 389 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 390 | png_size_t length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 391 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 392 | |
| 393 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 394 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 395 | return; |
| 396 | |
| 397 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 398 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 399 | (unsigned long)length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 400 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); |
| 401 | if (info_ptr->pcal_purpose == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 402 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 403 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 404 | return; |
| 405 | } |
| 406 | png_memcpy(info_ptr->pcal_purpose, purpose, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 407 | |
| 408 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 409 | info_ptr->pcal_X0 = X0; |
| 410 | info_ptr->pcal_X1 = X1; |
| 411 | info_ptr->pcal_type = (png_byte)type; |
| 412 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 413 | |
| 414 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 415 | png_debug1(3, "allocating units for info (%lu bytes)\n", |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 416 | (unsigned long)length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 417 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); |
| 418 | if (info_ptr->pcal_units == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 419 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 420 | png_warning(png_ptr, "Insufficient memory for pCAL units"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 421 | return; |
| 422 | } |
| 423 | png_memcpy(info_ptr->pcal_units, units, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 424 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 425 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 426 | (png_size_t)((nparams + 1) * png_sizeof(png_charp))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 427 | if (info_ptr->pcal_params == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 428 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 429 | png_warning(png_ptr, "Insufficient memory for pCAL params"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 430 | return; |
| 431 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 432 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 433 | info_ptr->pcal_params[nparams] = NULL; |
| 434 | |
| 435 | for (i = 0; i < nparams; i++) |
| 436 | { |
| 437 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 438 | png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 439 | (unsigned long)length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 440 | info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); |
| 441 | if (info_ptr->pcal_params[i] == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 442 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 443 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); |
| 444 | return; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 445 | } |
| 446 | png_memcpy(info_ptr->pcal_params[i], params[i], length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 450 | #ifdef PNG_FREE_ME_SUPPORTED |
| 451 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 452 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 453 | } |
| 454 | #endif |
| 455 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 456 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 457 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 458 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 459 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 460 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 461 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 462 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 463 | if (png_ptr == NULL || info_ptr == NULL) |
| 464 | return; |
| 465 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 466 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 467 | info_ptr->scal_pixel_width = width; |
| 468 | info_ptr->scal_pixel_height = height; |
| 469 | |
| 470 | info_ptr->valid |= PNG_INFO_sCAL; |
| 471 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 472 | #else |
| 473 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 474 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 475 | png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 476 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 477 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 478 | png_size_t length; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 479 | |
| 480 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 481 | if (png_ptr == NULL || info_ptr == NULL) |
| 482 | return; |
| 483 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 484 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 485 | |
| 486 | length = png_strlen(swidth) + 1; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 487 | png_debug1(3, "allocating unit for info (%u bytes)\n", |
| 488 | (unsigned int)length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 489 | info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length); |
| 490 | if (info_ptr->scal_s_width == NULL) |
| 491 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 492 | png_warning(png_ptr, |
| 493 | "Memory allocation failed while processing sCAL"); |
| 494 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 495 | } |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 496 | png_memcpy(info_ptr->scal_s_width, swidth, length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 497 | |
| 498 | length = png_strlen(sheight) + 1; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 499 | png_debug1(3, "allocating unit for info (%u bytes)\n", |
| 500 | (unsigned int)length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 501 | info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length); |
| 502 | if (info_ptr->scal_s_height == NULL) |
| 503 | { |
| 504 | png_free (png_ptr, info_ptr->scal_s_width); |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 505 | info_ptr->scal_s_width = NULL; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 506 | png_warning(png_ptr, |
| 507 | "Memory allocation failed while processing sCAL"); |
| 508 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 509 | } |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 510 | png_memcpy(info_ptr->scal_s_height, sheight, length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 511 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 512 | #ifdef PNG_FREE_ME_SUPPORTED |
| 513 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 514 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 515 | } |
| 516 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 517 | #endif |
| 518 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 519 | |
| 520 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 521 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 522 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 523 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 524 | { |
| 525 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 526 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 527 | return; |
| 528 | |
| 529 | info_ptr->x_pixels_per_unit = res_x; |
| 530 | info_ptr->y_pixels_per_unit = res_y; |
| 531 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 532 | info_ptr->valid |= PNG_INFO_pHYs; |
| 533 | } |
| 534 | #endif |
| 535 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 536 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 537 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 538 | png_colorp palette, int num_palette) |
| 539 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 540 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 541 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 542 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 543 | return; |
| 544 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 545 | if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) |
| 546 | { |
| 547 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 548 | png_error(png_ptr, "Invalid palette length"); |
| 549 | else |
| 550 | { |
| 551 | png_warning(png_ptr, "Invalid palette length"); |
| 552 | return; |
| 553 | } |
| 554 | } |
| 555 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 556 | /* |
| 557 | * It may not actually be necessary to set png_ptr->palette here; |
| 558 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 559 | * function used to do the allocation. |
| 560 | */ |
| 561 | #ifdef PNG_FREE_ME_SUPPORTED |
| 562 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 563 | #endif |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 564 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 565 | /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead |
| 566 | of num_palette entries, |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 567 | in case of an invalid PNG file that has too-large sample values. */ |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 568 | png_ptr->palette = (png_colorp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 569 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 570 | png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH * |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 571 | png_sizeof(png_color)); |
| 572 | png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color)); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 573 | info_ptr->palette = png_ptr->palette; |
| 574 | info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 575 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 576 | #ifdef PNG_FREE_ME_SUPPORTED |
| 577 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 578 | #else |
| 579 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 580 | #endif |
| 581 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 582 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 583 | } |
| 584 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 585 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 586 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 587 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 588 | png_color_8p sig_bit) |
| 589 | { |
| 590 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 591 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 592 | return; |
| 593 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 594 | png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 595 | info_ptr->valid |= PNG_INFO_sBIT; |
| 596 | } |
| 597 | #endif |
| 598 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 599 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 600 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 601 | png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 602 | { |
| 603 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 604 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 605 | return; |
| 606 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 607 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 608 | info_ptr->valid |= PNG_INFO_sRGB; |
| 609 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 610 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 611 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 612 | png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 613 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 614 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 615 | #if defined(PNG_gAMA_SUPPORTED) |
| 616 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 617 | float file_gamma; |
| 618 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 619 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 620 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 621 | #endif |
| 622 | #endif |
| 623 | #if defined(PNG_cHRM_SUPPORTED) |
| 624 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 625 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 626 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 627 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 628 | png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 629 | int_green_y, int_blue_x, int_blue_y; |
| 630 | #endif |
| 631 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 632 | png_debug1(1, "in %s storage function\n", "sRGB_gAMA_and_cHRM"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 633 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 634 | return; |
| 635 | |
| 636 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 637 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 638 | #if defined(PNG_gAMA_SUPPORTED) |
| 639 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 640 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 641 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 642 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 643 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 644 | int_file_gamma = 45455L; |
| 645 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 646 | #endif |
| 647 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 648 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 649 | #if defined(PNG_cHRM_SUPPORTED) |
| 650 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 651 | int_white_x = 31270L; |
| 652 | int_white_y = 32900L; |
| 653 | int_red_x = 64000L; |
| 654 | int_red_y = 33000L; |
| 655 | int_green_x = 30000L; |
| 656 | int_green_y = 60000L; |
| 657 | int_blue_x = 15000L; |
| 658 | int_blue_y = 6000L; |
| 659 | |
| 660 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 661 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 662 | int_blue_x, int_blue_y); |
| 663 | #endif |
| 664 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 665 | white_x = (float).3127; |
| 666 | white_y = (float).3290; |
| 667 | red_x = (float).64; |
| 668 | red_y = (float).33; |
| 669 | green_x = (float).30; |
| 670 | green_y = (float).60; |
| 671 | blue_x = (float).15; |
| 672 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 673 | |
| 674 | png_set_cHRM(png_ptr, info_ptr, |
| 675 | white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 676 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 677 | #endif |
| 678 | } |
| 679 | #endif |
| 680 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 681 | |
| 682 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 683 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 684 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 685 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 686 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 687 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 688 | png_charp new_iccp_name; |
| 689 | png_charp new_iccp_profile; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 690 | png_uint_32 length; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 691 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 692 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 693 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 694 | return; |
| 695 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 696 | length = png_strlen(name)+1; |
| 697 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 698 | if (new_iccp_name == NULL) |
| 699 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 700 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 701 | return; |
| 702 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 703 | png_memcpy(new_iccp_name, name, length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 704 | new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen); |
| 705 | if (new_iccp_profile == NULL) |
| 706 | { |
| 707 | png_free (png_ptr, new_iccp_name); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 708 | png_warning(png_ptr, |
| 709 | "Insufficient memory to process iCCP profile"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 710 | return; |
| 711 | } |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 712 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 713 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 714 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 715 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 716 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 717 | info_ptr->iccp_name = new_iccp_name; |
| 718 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 719 | /* Compression is always zero but is here so the API and info structure |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 720 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 721 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 722 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 723 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 724 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 725 | info_ptr->valid |= PNG_INFO_iCCP; |
| 726 | } |
| 727 | #endif |
| 728 | |
| 729 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 730 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 731 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 732 | int num_text) |
| 733 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 734 | int ret; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 735 | ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 736 | if (ret) |
| 737 | png_error(png_ptr, "Insufficient memory to store text"); |
| 738 | } |
| 739 | |
| 740 | int /* PRIVATE */ |
| 741 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 742 | int num_text) |
| 743 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 744 | int i; |
| 745 | |
| 746 | png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ? |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 747 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 748 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 749 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 750 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 751 | |
| 752 | /* Make sure we have enough space in the "text" array in info_struct |
| 753 | * to hold all of the incoming text_ptr objects. |
| 754 | */ |
| 755 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 756 | { |
| 757 | if (info_ptr->text != NULL) |
| 758 | { |
| 759 | png_textp old_text; |
| 760 | int old_max; |
| 761 | |
| 762 | old_max = info_ptr->max_text; |
| 763 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 764 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 765 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 766 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 767 | if (info_ptr->text == NULL) |
| 768 | { |
| 769 | png_free(png_ptr, old_text); |
| 770 | return(1); |
| 771 | } |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 772 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 773 | png_sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 774 | png_free(png_ptr, old_text); |
| 775 | } |
| 776 | else |
| 777 | { |
| 778 | info_ptr->max_text = num_text + 8; |
| 779 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 780 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 781 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 782 | if (info_ptr->text == NULL) |
| 783 | return(1); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 784 | #ifdef PNG_FREE_ME_SUPPORTED |
| 785 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 786 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 787 | } |
| 788 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 789 | info_ptr->max_text); |
| 790 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 791 | for (i = 0; i < num_text; i++) |
| 792 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 793 | png_size_t text_length, key_len; |
| 794 | png_size_t lang_len, lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 795 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 796 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 797 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 798 | continue; |
| 799 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 800 | key_len = png_strlen(text_ptr[i].key); |
| 801 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 802 | if (text_ptr[i].compression <= 0) |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 803 | { |
| 804 | lang_len = 0; |
| 805 | lang_key_len = 0; |
| 806 | } |
| 807 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 808 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 809 | { |
| 810 | /* set iTXt data */ |
Glenn Randers-Pehrson | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame] | 811 | if (text_ptr[i].lang != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 812 | lang_len = png_strlen(text_ptr[i].lang); |
| 813 | else |
| 814 | lang_len = 0; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 815 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 816 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 817 | else |
| 818 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 819 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 820 | #else |
| 821 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 822 | png_warning(png_ptr, "iTXt chunk not supported"); |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 823 | continue; |
| 824 | } |
| 825 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 826 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 827 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 828 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 829 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 830 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 831 | if (text_ptr[i].compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 832 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 833 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 834 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 835 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 836 | } |
| 837 | else |
| 838 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 839 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 840 | textp->compression = text_ptr[i].compression; |
| 841 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 842 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 843 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 844 | (png_size_t) |
| 845 | (key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 846 | if (textp->key == NULL) |
| 847 | return(1); |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 848 | png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n", |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 849 | (unsigned long)(png_uint_32) |
| 850 | (key_len + lang_len + lang_key_len + text_length + 4), |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 851 | (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 852 | |
| 853 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 854 | (png_size_t)(key_len)); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 855 | *(textp->key + key_len) = '\0'; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 856 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 857 | if (text_ptr[i].compression > 0) |
| 858 | { |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 859 | textp->lang = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 860 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 861 | *(textp->lang + lang_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 862 | textp->lang_key = textp->lang + lang_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 863 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 864 | *(textp->lang_key + lang_key_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 865 | textp->text = textp->lang_key + lang_key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 866 | } |
| 867 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 868 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 869 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 870 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 871 | textp->lang=NULL; |
| 872 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 873 | #endif |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 874 | textp->text = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 875 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 876 | if (text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 877 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 878 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 879 | *(textp->text + text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 880 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 881 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 882 | if (textp->compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 883 | { |
| 884 | textp->text_length = 0; |
| 885 | textp->itxt_length = text_length; |
| 886 | } |
| 887 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 888 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 889 | { |
| 890 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 891 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 892 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 893 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 894 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 895 | info_ptr->num_text++; |
| 896 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 897 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 898 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 899 | } |
| 900 | #endif |
| 901 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 902 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 903 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 904 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 905 | { |
| 906 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 907 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 908 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 909 | return; |
| 910 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 911 | png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 912 | info_ptr->valid |= PNG_INFO_tIME; |
| 913 | } |
| 914 | #endif |
| 915 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 916 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 917 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 918 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 919 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 920 | { |
| 921 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 922 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 923 | return; |
| 924 | |
| 925 | if (trans != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 926 | { |
| 927 | /* |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 928 | * It may not actually be necessary to set png_ptr->trans here; |
| 929 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 930 | * function used to do the allocation. |
| 931 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 932 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 933 | #ifdef PNG_FREE_ME_SUPPORTED |
| 934 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 935 | #endif |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 936 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 937 | /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 938 | png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 939 | (png_size_t)PNG_MAX_PALETTE_LENGTH); |
| 940 | if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 941 | png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 942 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 943 | |
| 944 | if (trans_values != NULL) |
| 945 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 946 | int sample_max = (1 << info_ptr->bit_depth); |
| 947 | if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && |
| 948 | (int)trans_values->gray > sample_max) || |
| 949 | (info_ptr->color_type == PNG_COLOR_TYPE_RGB && |
| 950 | ((int)trans_values->red > sample_max || |
| 951 | (int)trans_values->green > sample_max || |
| 952 | (int)trans_values->blue > sample_max))) |
| 953 | png_warning(png_ptr, |
| 954 | "tRNS chunk has out-of-range samples for bit_depth"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 955 | png_memcpy(&(info_ptr->trans_values), trans_values, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 956 | png_sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 957 | if (num_trans == 0) |
| 958 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 959 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 960 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 961 | info_ptr->num_trans = (png_uint_16)num_trans; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 962 | if (num_trans != 0) |
| 963 | { |
| 964 | info_ptr->valid |= PNG_INFO_tRNS; |
| 965 | #ifdef PNG_FREE_ME_SUPPORTED |
| 966 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 967 | #else |
| 968 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 969 | #endif |
| 970 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 971 | } |
| 972 | #endif |
| 973 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 974 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 975 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 976 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 977 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 978 | /* |
| 979 | * entries - array of png_sPLT_t structures |
| 980 | * to be added to the list of palettes |
| 981 | * in the info structure. |
| 982 | * nentries - number of palette structures to be |
| 983 | * added. |
| 984 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 985 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 986 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 987 | int i; |
| 988 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 989 | if (png_ptr == NULL || info_ptr == NULL) |
| 990 | return; |
| 991 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 992 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 993 | (info_ptr->splt_palettes_num + nentries) * |
| 994 | (png_size_t)png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 995 | if (np == NULL) |
| 996 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 997 | png_warning(png_ptr, "No memory for sPLT palettes"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 998 | return; |
| 999 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1000 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1001 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1002 | info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1003 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 1004 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1005 | |
| 1006 | for (i = 0; i < nentries; i++) |
| 1007 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 1008 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 1009 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1010 | png_uint_32 length; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1011 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1012 | length = png_strlen(from->name) + 1; |
| 1013 | to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length); |
| 1014 | if (to->name == NULL) |
| 1015 | { |
| 1016 | png_warning(png_ptr, |
| 1017 | "Out of memory while processing sPLT chunk"); |
| 1018 | continue; |
| 1019 | } |
| 1020 | png_memcpy(to->name, from->name, length); |
| 1021 | to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, |
| 1022 | (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry))); |
| 1023 | if (to->entries == NULL) |
| 1024 | { |
| 1025 | png_warning(png_ptr, |
| 1026 | "Out of memory while processing sPLT chunk"); |
| 1027 | png_free(png_ptr, to->name); |
| 1028 | to->name = NULL; |
| 1029 | continue; |
| 1030 | } |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 1031 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1032 | from->nentries * png_sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 1033 | to->nentries = from->nentries; |
| 1034 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1035 | } |
| 1036 | |
| 1037 | info_ptr->splt_palettes = np; |
| 1038 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1039 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1040 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1041 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1042 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1043 | } |
| 1044 | #endif /* PNG_sPLT_SUPPORTED */ |
| 1045 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 1046 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1047 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1048 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1049 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1050 | { |
| 1051 | png_unknown_chunkp np; |
| 1052 | int i; |
| 1053 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1054 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 1055 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1056 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1057 | np = (png_unknown_chunkp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1058 | (png_size_t)((info_ptr->unknown_chunks_num + num_unknowns) * |
| 1059 | png_sizeof(png_unknown_chunk))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1060 | if (np == NULL) |
| 1061 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1062 | png_warning(png_ptr, |
| 1063 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1064 | return; |
| 1065 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1066 | |
| 1067 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1068 | info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1069 | png_free(png_ptr, info_ptr->unknown_chunks); |
| 1070 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1071 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1072 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1073 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 1074 | png_unknown_chunkp from = unknowns + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1075 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1076 | png_memcpy((png_charp)to->name, |
| 1077 | (png_charp)from->name, |
| 1078 | png_sizeof(from->name)); |
| 1079 | to->name[png_sizeof(to->name)-1] = '\0'; |
| 1080 | to->size = from->size; |
| 1081 | /* note our location in the read or write sequence */ |
| 1082 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1083 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1084 | if (from->size == 0) |
| 1085 | to->data=NULL; |
| 1086 | else |
| 1087 | { |
| 1088 | to->data = (png_bytep)png_malloc_warn(png_ptr, |
| 1089 | (png_size_t)from->size); |
| 1090 | if (to->data == NULL) |
| 1091 | { |
| 1092 | png_warning(png_ptr, |
| 1093 | "Out of memory while processing unknown chunk"); |
| 1094 | to->size = 0; |
| 1095 | } |
| 1096 | else |
| 1097 | png_memcpy(to->data, from->data, from->size); |
| 1098 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1099 | } |
| 1100 | |
| 1101 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1102 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1103 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1104 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1105 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1106 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1107 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1108 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 1109 | int chunk, int location) |
| 1110 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1111 | if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1112 | (int)info_ptr->unknown_chunks_num) |
| 1113 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1114 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1115 | #endif |
| 1116 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1117 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1118 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 1119 | png_uint_32 PNGAPI |
| 1120 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 1121 | { |
| 1122 | png_debug(1, "in png_permit_mng_features\n"); |
| 1123 | if (png_ptr == NULL) |
| 1124 | return (png_uint_32)0; |
| 1125 | png_ptr->mng_features_permitted = |
| 1126 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 1127 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1128 | } |
| 1129 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1130 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1131 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1132 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1133 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 1134 | chunk_list, int num_chunks) |
| 1135 | { |
| 1136 | png_bytep new_list, p; |
| 1137 | int i, old_num_chunks; |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1138 | if (png_ptr == NULL) |
| 1139 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1140 | if (num_chunks == 0) |
| 1141 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1142 | if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1143 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 1144 | else |
| 1145 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1146 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1147 | if (keep == PNG_HANDLE_CHUNK_ALWAYS) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1148 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1149 | else |
| 1150 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1151 | return; |
| 1152 | } |
| 1153 | if (chunk_list == NULL) |
| 1154 | return; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 1155 | old_num_chunks = png_ptr->num_chunk_list; |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1156 | new_list=(png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1157 | (png_size_t) |
| 1158 | (5*(num_chunks + old_num_chunks))); |
| 1159 | if (png_ptr->chunk_list != NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1160 | { |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1161 | png_memcpy(new_list, png_ptr->chunk_list, |
| 1162 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1163 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 1164 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1165 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1166 | png_memcpy(new_list + 5*old_num_chunks, chunk_list, |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1167 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 1168 | for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1169 | *p=(png_byte)keep; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 1170 | png_ptr->num_chunk_list = old_num_chunks + num_chunks; |
| 1171 | png_ptr->chunk_list = new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1172 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1173 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1174 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1175 | } |
| 1176 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1177 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1178 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1179 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1180 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 1181 | png_user_chunk_ptr read_user_chunk_fn) |
| 1182 | { |
| 1183 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1184 | if (png_ptr == NULL) |
| 1185 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1186 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1187 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1188 | } |
| 1189 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1190 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1191 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1192 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1193 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1194 | { |
| 1195 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1196 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1197 | if (png_ptr == NULL || info_ptr == NULL) |
| 1198 | return; |
| 1199 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1200 | if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1201 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1202 | info_ptr->row_pointers = row_pointers; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1203 | if (row_pointers) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1204 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1205 | } |
| 1206 | #endif |
| 1207 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1208 | #ifdef PNG_WRITE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1209 | void PNGAPI |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1210 | png_set_compression_buffer_size(png_structp png_ptr, |
| 1211 | png_size_t size) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1212 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1213 | if (png_ptr == NULL) |
| 1214 | return; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1215 | png_free(png_ptr, png_ptr->zbuf); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1216 | png_ptr->zbuf_size = size; |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1217 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
| 1218 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 1219 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 1220 | } |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1221 | #endif |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1222 | |
| 1223 | void PNGAPI |
| 1224 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 1225 | { |
| 1226 | if (png_ptr && info_ptr) |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1227 | info_ptr->valid &= ~mask; |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1228 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1229 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1230 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1231 | |
| 1232 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
| 1233 | /* this function was added to libpng 1.2.6 */ |
| 1234 | void PNGAPI |
| 1235 | png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, |
| 1236 | png_uint_32 user_height_max) |
| 1237 | { |
| 1238 | /* Images with dimensions larger than these limits will be |
| 1239 | * rejected by png_set_IHDR(). To accept any PNG datastream |
| 1240 | * regardless of dimensions, set both limits to 0x7ffffffL. |
| 1241 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1242 | if (png_ptr == NULL) return; |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1243 | png_ptr->user_width_max = user_width_max; |
| 1244 | png_ptr->user_height_max = user_height_max; |
| 1245 | } |
| 1246 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ |
| 1247 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1248 | |
| 1249 | #if defined(PNG_BENIGN_ERRORS_SUPPORTED) |
| 1250 | void PNGAPI |
| 1251 | png_set_benign_errors(png_structp png_ptr, int allowed) |
| 1252 | { |
| 1253 | png_debug(1, "in png_set_benign_errors\n"); |
| 1254 | if (allowed) |
| 1255 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; |
| 1256 | else |
| 1257 | png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; |
| 1258 | } |
| 1259 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 1260 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |