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 | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 4 | * Last changed in libpng 1.4.0 April 20, 2006 |
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 | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 6 | * Copyright (c) 1998-2006 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 | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 17 | #include "pngpriv.h" |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 18 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 19 | #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) |
| 20 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 21 | #if defined(PNG_bKGD_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 22 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 23 | png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background) |
| 24 | { |
| 25 | png_debug1(1, "in %s storage function\n", "bKGD"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 26 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 27 | return; |
| 28 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 29 | png_memcpy(&(info_ptr->background), background, sizeof(png_color_16)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 30 | info_ptr->valid |= PNG_INFO_bKGD; |
| 31 | } |
| 32 | #endif |
| 33 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 34 | #if defined(PNG_cHRM_SUPPORTED) |
| 35 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 36 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 37 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, |
| 38 | double white_x, double white_y, double red_x, double red_y, |
| 39 | double green_x, double green_y, double blue_x, double blue_y) |
| 40 | { |
| 41 | png_debug1(1, "in %s storage function\n", "cHRM"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 42 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 43 | return; |
| 44 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 45 | if (white_x < 0.0 || white_y < 0.0 || |
| 46 | red_x < 0.0 || red_y < 0.0 || |
| 47 | green_x < 0.0 || green_y < 0.0 || |
| 48 | blue_x < 0.0 || blue_y < 0.0) |
| 49 | { |
| 50 | png_warning(png_ptr, |
| 51 | "Ignoring attempt to set negative chromaticity value"); |
| 52 | return; |
| 53 | } |
| 54 | if (white_x > 21474.83 || white_y > 21474.83 || |
| 55 | red_x > 21474.83 || red_y > 21474.83 || |
| 56 | green_x > 21474.83 || green_y > 21474.83 || |
| 57 | blue_x > 21474.83 || blue_y > 21474.83) |
| 58 | { |
| 59 | png_warning(png_ptr, |
| 60 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 61 | return; |
| 62 | } |
| 63 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 64 | info_ptr->x_white = (float)white_x; |
| 65 | info_ptr->y_white = (float)white_y; |
| 66 | info_ptr->x_red = (float)red_x; |
| 67 | info_ptr->y_red = (float)red_y; |
| 68 | info_ptr->x_green = (float)green_x; |
| 69 | info_ptr->y_green = (float)green_y; |
| 70 | info_ptr->x_blue = (float)blue_x; |
| 71 | info_ptr->y_blue = (float)blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 72 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 73 | info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); |
| 74 | 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] | 75 | info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5); |
| 76 | 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] | 77 | info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); |
| 78 | 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] | 79 | info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5); |
| 80 | 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] | 81 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 82 | info_ptr->valid |= PNG_INFO_cHRM; |
| 83 | } |
| 84 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 85 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 86 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 87 | 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] | 88 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, |
| 89 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, |
| 90 | png_fixed_point blue_x, png_fixed_point blue_y) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 91 | { |
| 92 | png_debug1(1, "in %s storage function\n", "cHRM"); |
| 93 | if (png_ptr == NULL || info_ptr == NULL) |
| 94 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 95 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 96 | if (white_x < 0 || white_y < 0 || |
| 97 | red_x < 0 || red_y < 0 || |
| 98 | green_x < 0 || green_y < 0 || |
| 99 | blue_x < 0 || blue_y < 0) |
| 100 | { |
| 101 | png_warning(png_ptr, |
| 102 | "Ignoring attempt to set negative chromaticity value"); |
| 103 | return; |
| 104 | } |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 105 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 106 | if (white_x > (double) PNG_UINT_31_MAX || |
| 107 | white_y > (double) PNG_UINT_31_MAX || |
| 108 | red_x > (double) PNG_UINT_31_MAX || |
| 109 | red_y > (double) PNG_UINT_31_MAX || |
| 110 | green_x > (double) PNG_UINT_31_MAX || |
| 111 | green_y > (double) PNG_UINT_31_MAX || |
| 112 | blue_x > (double) PNG_UINT_31_MAX || |
| 113 | blue_y > (double) PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 114 | #else |
| 115 | if (white_x > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 116 | white_y > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 117 | red_x > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 118 | red_y > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 119 | green_x > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 120 | green_y > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 121 | blue_x > (png_fixed_point) PNG_UINT_31_MAX/100000L || |
| 122 | blue_y > (png_fixed_point) PNG_UINT_31_MAX/100000L) |
| 123 | #endif |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 124 | { |
| 125 | png_warning(png_ptr, |
| 126 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 127 | return; |
| 128 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 129 | info_ptr->int_x_white = white_x; |
| 130 | info_ptr->int_y_white = white_y; |
| 131 | info_ptr->int_x_red = red_x; |
| 132 | info_ptr->int_y_red = red_y; |
| 133 | info_ptr->int_x_green = green_x; |
| 134 | info_ptr->int_y_green = green_y; |
| 135 | info_ptr->int_x_blue = blue_x; |
| 136 | info_ptr->int_y_blue = blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 137 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 138 | info_ptr->x_white = (float)(white_x/100000.); |
| 139 | info_ptr->y_white = (float)(white_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 140 | info_ptr->x_red = (float)( red_x/100000.); |
| 141 | info_ptr->y_red = (float)( red_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 142 | info_ptr->x_green = (float)(green_x/100000.); |
| 143 | info_ptr->y_green = (float)(green_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 144 | info_ptr->x_blue = (float)( blue_x/100000.); |
| 145 | info_ptr->y_blue = (float)( blue_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 146 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 147 | info_ptr->valid |= PNG_INFO_cHRM; |
| 148 | } |
| 149 | #endif |
| 150 | #endif |
| 151 | |
| 152 | #if defined(PNG_gAMA_SUPPORTED) |
| 153 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 154 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 155 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 156 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 157 | double gamma; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 158 | png_debug1(1, "in %s storage function\n", "gAMA"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 159 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 160 | return; |
| 161 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 162 | /* Check for overflow */ |
| 163 | if (file_gamma > 21474.83) |
| 164 | { |
| 165 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
| 166 | gamma=21474.83; |
| 167 | } |
| 168 | else |
| 169 | gamma=file_gamma; |
| 170 | info_ptr->gamma = (float)gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 171 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 172 | info_ptr->int_gamma = (int)(gamma*100000.+.5); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 173 | #endif |
| 174 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 175 | if(gamma == 0.0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 176 | png_warning(png_ptr, "Setting gamma=0"); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 177 | } |
| 178 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 179 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 180 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 181 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 182 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 183 | png_fixed_point gamma; |
| 184 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 185 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 186 | if (png_ptr == NULL || info_ptr == NULL) |
| 187 | return; |
| 188 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 189 | if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 190 | { |
| 191 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 192 | gamma=PNG_UINT_31_MAX; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 193 | } |
| 194 | else |
| 195 | { |
| 196 | if (int_gamma < 0) |
| 197 | { |
| 198 | png_warning(png_ptr, "Setting negative gamma to zero"); |
| 199 | gamma=0; |
| 200 | } |
| 201 | else |
| 202 | gamma=int_gamma; |
| 203 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 204 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 205 | info_ptr->gamma = (float)(gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 206 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 207 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 208 | info_ptr->int_gamma = gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 209 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 210 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 211 | if(gamma == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 212 | png_warning(png_ptr, "Setting gamma=0"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 213 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 214 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 215 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 216 | #if defined(PNG_hIST_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 217 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 218 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 219 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 220 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 221 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 222 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 223 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 224 | return; |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 225 | if (info_ptr->num_palette <= 0 || info_ptr->num_palette |
| 226 | > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 227 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 228 | png_warning(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 229 | "Invalid palette size, hIST allocation skipped"); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 230 | return; |
| 231 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 232 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 233 | #ifdef PNG_FREE_ME_SUPPORTED |
| 234 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 235 | #endif |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 236 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version |
| 237 | 1.2.1 */ |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 238 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 239 | PNG_MAX_PALETTE_LENGTH * sizeof(png_uint_16)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 240 | if (png_ptr->hist == NULL) |
| 241 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 242 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 243 | return; |
| 244 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 245 | |
| 246 | for (i = 0; i < info_ptr->num_palette; i++) |
| 247 | png_ptr->hist[i] = hist[i]; |
| 248 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 249 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 250 | |
| 251 | #ifdef PNG_FREE_ME_SUPPORTED |
| 252 | info_ptr->free_me |= PNG_FREE_HIST; |
| 253 | #else |
| 254 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 255 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 256 | } |
| 257 | #endif |
| 258 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 259 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 260 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 261 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 262 | int color_type, int interlace_type, int compression_type, |
| 263 | int filter_type) |
| 264 | { |
| 265 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 266 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 267 | return; |
| 268 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 269 | /* check for width and height valid values */ |
| 270 | if (width == 0 || height == 0) |
| 271 | 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] | 272 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
| 273 | if (width > png_ptr->user_width_max || height > png_ptr->user_height_max) |
| 274 | png_error(png_ptr, "image size exceeds user limits in IHDR"); |
| 275 | #else |
| 276 | if (width > PNG_USER_WIDTH_MAX || height > PNG_USER_HEIGHT_MAX) |
| 277 | png_error(png_ptr, "image size exceeds user limits in IHDR"); |
| 278 | #endif |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 279 | if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 280 | png_error(png_ptr, "Invalid image size in IHDR"); |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 281 | if ( width > (PNG_UINT_32_MAX |
| 282 | >> 3) /* 8-byte RGBA pixels */ |
| 283 | - 64 /* bigrowbuf hack */ |
| 284 | - 1 /* filter byte */ |
| 285 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 286 | - 8) /* extra max_pixel_depth pad */ |
| 287 | 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] | 288 | |
| 289 | /* check other values */ |
| 290 | if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && |
| 291 | bit_depth != 8 && bit_depth != 16) |
| 292 | png_error(png_ptr, "Invalid bit depth in IHDR"); |
| 293 | |
| 294 | if (color_type < 0 || color_type == 1 || |
| 295 | color_type == 5 || color_type > 6) |
| 296 | png_error(png_ptr, "Invalid color type in IHDR"); |
| 297 | |
| 298 | if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || |
| 299 | ((color_type == PNG_COLOR_TYPE_RGB || |
| 300 | color_type == PNG_COLOR_TYPE_GRAY_ALPHA || |
| 301 | color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) |
| 302 | png_error(png_ptr, "Invalid color type/bit depth combination in IHDR"); |
| 303 | |
| 304 | if (interlace_type >= PNG_INTERLACE_LAST) |
| 305 | png_error(png_ptr, "Unknown interlace method in IHDR"); |
| 306 | |
| 307 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 308 | png_error(png_ptr, "Unknown compression method in IHDR"); |
| 309 | |
| 310 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 311 | /* Accept filter_method 64 (intrapixel differencing) only if |
| 312 | * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and |
| 313 | * 2. Libpng did not read a PNG signature (this filter_method is only |
| 314 | * used in PNG datastreams that are embedded in MNG datastreams) and |
| 315 | * 3. The application called png_permit_mng_features with a mask that |
| 316 | * included PNG_FLAG_MNG_FILTER_64 and |
| 317 | * 4. The filter_method is 64 and |
| 318 | * 5. The color_type is RGB or RGBA |
| 319 | */ |
| 320 | if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted) |
Glenn Randers-Pehrson | c3d51c1 | 2006-03-02 07:23:18 -0600 | [diff] [blame] | 321 | png_warning(png_ptr,"MNG features are not allowed in a PNG datastream"); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 322 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 323 | { |
| 324 | if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && |
| 325 | (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && |
| 326 | ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && |
Glenn Randers-Pehrson | e647462 | 2006-03-04 16:50:47 -0600 | [diff] [blame] | 327 | (color_type == PNG_COLOR_TYPE_RGB || |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 328 | color_type == PNG_COLOR_TYPE_RGB_ALPHA))) |
| 329 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 330 | if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) |
| 331 | png_warning(png_ptr, "Invalid filter method in IHDR"); |
| 332 | } |
| 333 | #else |
| 334 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 335 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 336 | #endif |
| 337 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 338 | info_ptr->width = width; |
| 339 | info_ptr->height = height; |
| 340 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 341 | info_ptr->color_type =(png_byte) color_type; |
| 342 | info_ptr->compression_type = (png_byte)compression_type; |
| 343 | info_ptr->filter_type = (png_byte)filter_type; |
| 344 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 345 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 346 | info_ptr->channels = 1; |
| 347 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 348 | info_ptr->channels = 3; |
| 349 | else |
| 350 | info_ptr->channels = 1; |
| 351 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 352 | info_ptr->channels++; |
| 353 | 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] | 354 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 355 | /* check for potential overflow */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 356 | if (width > (PNG_UINT_32_MAX |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 357 | >> 3) /* 8-byte RGBA pixels */ |
| 358 | - 64 /* bigrowbuf hack */ |
| 359 | - 1 /* filter byte */ |
| 360 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 361 | - 8) /* extra max_pixel_depth pad */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 362 | info_ptr->rowbytes = 0; |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 363 | else |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 364 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,width); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 365 | } |
| 366 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 367 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 368 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 369 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 370 | 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] | 371 | { |
| 372 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 373 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 374 | return; |
| 375 | |
| 376 | info_ptr->x_offset = offset_x; |
| 377 | info_ptr->y_offset = offset_y; |
| 378 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 379 | info_ptr->valid |= PNG_INFO_oFFs; |
| 380 | } |
| 381 | #endif |
| 382 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 383 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 384 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 385 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 386 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 387 | png_charp units, png_charpp params) |
| 388 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 389 | png_size_t length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 390 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 391 | |
| 392 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 393 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 394 | return; |
| 395 | |
| 396 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 397 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", |
| 398 | (unsigned long) length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 399 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); |
| 400 | if (info_ptr->pcal_purpose == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 401 | { |
| 402 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); |
| 403 | return; |
| 404 | } |
| 405 | png_memcpy(info_ptr->pcal_purpose, purpose, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 406 | |
| 407 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 408 | info_ptr->pcal_X0 = X0; |
| 409 | info_ptr->pcal_X1 = X1; |
| 410 | info_ptr->pcal_type = (png_byte)type; |
| 411 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 412 | |
| 413 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 414 | png_debug1(3, "allocating units for info (%lu bytes)\n", |
| 415 | (unsigned long)length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 416 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); |
| 417 | if (info_ptr->pcal_units == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 418 | { |
| 419 | png_warning(png_ptr, "Insufficient memory for pCAL units"); |
| 420 | return; |
| 421 | } |
| 422 | png_memcpy(info_ptr->pcal_units, units, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 423 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 424 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 425 | (png_size_t)((nparams + 1) * sizeof(png_charp))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 426 | if (info_ptr->pcal_params == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 427 | { |
| 428 | png_warning(png_ptr, "Insufficient memory for pCAL params"); |
| 429 | return; |
| 430 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 431 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 432 | info_ptr->pcal_params[nparams] = NULL; |
| 433 | |
| 434 | for (i = 0; i < nparams; i++) |
| 435 | { |
| 436 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 437 | png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i, |
| 438 | (unsigned long) length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 439 | info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); |
| 440 | if (info_ptr->pcal_params[i] == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 441 | { |
| 442 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); |
| 443 | return; |
| 444 | } |
| 445 | png_memcpy(info_ptr->pcal_params[i], params[i], length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 449 | #ifdef PNG_FREE_ME_SUPPORTED |
| 450 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 451 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 452 | } |
| 453 | #endif |
| 454 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 455 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 456 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 457 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 458 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 459 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 460 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 461 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 462 | if (png_ptr == NULL || info_ptr == NULL) |
| 463 | return; |
| 464 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 465 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 466 | info_ptr->scal_pixel_width = width; |
| 467 | info_ptr->scal_pixel_height = height; |
| 468 | |
| 469 | info_ptr->valid |= PNG_INFO_sCAL; |
| 470 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 471 | #else |
| 472 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 473 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 474 | 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] | 475 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 476 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 477 | png_size_t length; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 478 | |
| 479 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 480 | if (png_ptr == NULL || info_ptr == NULL) |
| 481 | return; |
| 482 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 483 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 484 | |
| 485 | length = png_strlen(swidth) + 1; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 486 | png_debug1(3, "allocating unit for info (%u bytes)\n", |
| 487 | (unsigned int)length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 488 | info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length); |
| 489 | if (info_ptr->scal_s_width == NULL) |
| 490 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 491 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 492 | } |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 493 | png_memcpy(info_ptr->scal_s_width, swidth, length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 494 | |
| 495 | length = png_strlen(sheight) + 1; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 496 | png_debug1(3, "allocating unit for info (%u bytes)\n", |
| 497 | (unsigned int)length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 498 | info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length); |
| 499 | if (info_ptr->scal_s_height == NULL) |
| 500 | { |
| 501 | png_free (png_ptr, info_ptr->scal_s_width); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 502 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 503 | } |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 504 | png_memcpy(info_ptr->scal_s_height, sheight, length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 505 | |
| 506 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 507 | #ifdef PNG_FREE_ME_SUPPORTED |
| 508 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 509 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 510 | } |
| 511 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 512 | #endif |
| 513 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 514 | |
| 515 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 516 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 517 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 518 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 519 | { |
| 520 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 521 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 522 | return; |
| 523 | |
| 524 | info_ptr->x_pixels_per_unit = res_x; |
| 525 | info_ptr->y_pixels_per_unit = res_y; |
| 526 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 527 | info_ptr->valid |= PNG_INFO_pHYs; |
| 528 | } |
| 529 | #endif |
| 530 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 531 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 532 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 533 | png_colorp palette, int num_palette) |
| 534 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 535 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 536 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 537 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 538 | return; |
| 539 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 540 | if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) |
| 541 | { |
| 542 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 543 | png_error(png_ptr, "Invalid palette length"); |
| 544 | else |
| 545 | { |
| 546 | png_warning(png_ptr, "Invalid palette length"); |
| 547 | return; |
| 548 | } |
| 549 | } |
| 550 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 551 | /* |
| 552 | * It may not actually be necessary to set png_ptr->palette here; |
| 553 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 554 | * function used to do the allocation. |
| 555 | */ |
| 556 | #ifdef PNG_FREE_ME_SUPPORTED |
| 557 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 558 | #endif |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 559 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 560 | /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead |
| 561 | of num_palette entries, |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 562 | 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] | 563 | png_ptr->palette = (png_colorp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 564 | PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 565 | png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH * |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 566 | sizeof(png_color)); |
| 567 | png_memcpy(png_ptr->palette, palette, num_palette * sizeof(png_color)); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 568 | info_ptr->palette = png_ptr->palette; |
| 569 | 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] | 570 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 571 | #ifdef PNG_FREE_ME_SUPPORTED |
| 572 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 573 | #else |
| 574 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 575 | #endif |
| 576 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 577 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 578 | } |
| 579 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 580 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 581 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 582 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 583 | png_color_8p sig_bit) |
| 584 | { |
| 585 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 586 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 587 | return; |
| 588 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 589 | png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof(png_color_8)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 590 | info_ptr->valid |= PNG_INFO_sBIT; |
| 591 | } |
| 592 | #endif |
| 593 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 594 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 595 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 596 | 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] | 597 | { |
| 598 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 599 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 600 | return; |
| 601 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 602 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 603 | info_ptr->valid |= PNG_INFO_sRGB; |
| 604 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 605 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 606 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 607 | 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] | 608 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 609 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 610 | #if defined(PNG_gAMA_SUPPORTED) |
| 611 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 612 | float file_gamma; |
| 613 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 614 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 615 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 616 | #endif |
| 617 | #endif |
| 618 | #if defined(PNG_cHRM_SUPPORTED) |
| 619 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 620 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 621 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 622 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 623 | 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] | 624 | int_green_y, int_blue_x, int_blue_y; |
| 625 | #endif |
| 626 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 627 | 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] | 628 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 629 | return; |
| 630 | |
| 631 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 632 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 633 | #if defined(PNG_gAMA_SUPPORTED) |
| 634 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 635 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 636 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 637 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 638 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 639 | int_file_gamma = 45455L; |
| 640 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 641 | #endif |
| 642 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 643 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 644 | #if defined(PNG_cHRM_SUPPORTED) |
| 645 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 646 | int_white_x = 31270L; |
| 647 | int_white_y = 32900L; |
| 648 | int_red_x = 64000L; |
| 649 | int_red_y = 33000L; |
| 650 | int_green_x = 30000L; |
| 651 | int_green_y = 60000L; |
| 652 | int_blue_x = 15000L; |
| 653 | int_blue_y = 6000L; |
| 654 | |
| 655 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 656 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 657 | int_blue_x, int_blue_y); |
| 658 | #endif |
| 659 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 660 | white_x = (float).3127; |
| 661 | white_y = (float).3290; |
| 662 | red_x = (float).64; |
| 663 | red_y = (float).33; |
| 664 | green_x = (float).30; |
| 665 | green_y = (float).60; |
| 666 | blue_x = (float).15; |
| 667 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 668 | |
| 669 | png_set_cHRM(png_ptr, info_ptr, |
| 670 | 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] | 671 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 672 | #endif |
| 673 | } |
| 674 | #endif |
| 675 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 676 | |
| 677 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 678 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 679 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 680 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 681 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 682 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 683 | png_charp new_iccp_name; |
| 684 | png_charp new_iccp_profile; |
| 685 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 686 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 687 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 688 | return; |
| 689 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 690 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, png_strlen(name)+1); |
| 691 | if (new_iccp_name == NULL) |
| 692 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 693 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 694 | return; |
| 695 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 696 | png_strcpy(new_iccp_name, name); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 697 | new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen); |
| 698 | if (new_iccp_profile == NULL) |
| 699 | { |
| 700 | png_free (png_ptr, new_iccp_name); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 701 | png_warning(png_ptr, "Insufficient memory to process iCCP profile"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 702 | return; |
| 703 | } |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 704 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 705 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 706 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 707 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 708 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 709 | info_ptr->iccp_name = new_iccp_name; |
| 710 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 711 | /* 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] | 712 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 713 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 714 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 715 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 716 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 717 | info_ptr->valid |= PNG_INFO_iCCP; |
| 718 | } |
| 719 | #endif |
| 720 | |
| 721 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 722 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 723 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 724 | int num_text) |
| 725 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 726 | int ret; |
| 727 | ret=png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); |
| 728 | if (ret) |
| 729 | png_error(png_ptr, "Insufficient memory to store text"); |
| 730 | } |
| 731 | |
| 732 | int /* PRIVATE */ |
| 733 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 734 | int num_text) |
| 735 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 736 | int i; |
| 737 | |
| 738 | 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] | 739 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 740 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 741 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 742 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 743 | |
| 744 | /* Make sure we have enough space in the "text" array in info_struct |
| 745 | * to hold all of the incoming text_ptr objects. |
| 746 | */ |
| 747 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 748 | { |
| 749 | if (info_ptr->text != NULL) |
| 750 | { |
| 751 | png_textp old_text; |
| 752 | int old_max; |
| 753 | |
| 754 | old_max = info_ptr->max_text; |
| 755 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 756 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 757 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 758 | (png_size_t)(info_ptr->max_text * sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 759 | if (info_ptr->text == NULL) |
| 760 | { |
| 761 | png_free(png_ptr, old_text); |
| 762 | return(1); |
| 763 | } |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 764 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 765 | sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 766 | png_free(png_ptr, old_text); |
| 767 | } |
| 768 | else |
| 769 | { |
| 770 | info_ptr->max_text = num_text + 8; |
| 771 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 772 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 773 | (png_uint_32)(info_ptr->max_text * sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 774 | if (info_ptr->text == NULL) |
| 775 | return(1); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 776 | #ifdef PNG_FREE_ME_SUPPORTED |
| 777 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 778 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 779 | } |
| 780 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 781 | info_ptr->max_text); |
| 782 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 783 | for (i = 0; i < num_text; i++) |
| 784 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 785 | png_size_t text_length,key_len; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 786 | png_size_t lang_len,lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 787 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 788 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 789 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 790 | continue; |
| 791 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 792 | key_len = png_strlen(text_ptr[i].key); |
| 793 | |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 794 | if(text_ptr[i].compression <= 0) |
| 795 | { |
| 796 | lang_len = 0; |
| 797 | lang_key_len = 0; |
| 798 | } |
| 799 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 800 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 801 | { |
| 802 | /* set iTXt data */ |
Glenn Randers-Pehrson | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame] | 803 | if (text_ptr[i].lang != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 804 | lang_len = png_strlen(text_ptr[i].lang); |
| 805 | else |
| 806 | lang_len = 0; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 807 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 808 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 809 | else |
| 810 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 811 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 812 | #else |
| 813 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 814 | png_warning(png_ptr, "iTXt chunk not supported"); |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 815 | continue; |
| 816 | } |
| 817 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 818 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 819 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 820 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 821 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 822 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 823 | if(text_ptr[i].compression > 0) |
| 824 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 825 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 826 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 827 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 828 | } |
| 829 | else |
| 830 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 831 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 832 | textp->compression = text_ptr[i].compression; |
| 833 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 834 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 835 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 836 | (png_size_t)(key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 837 | if (textp->key == NULL) |
| 838 | return(1); |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 839 | png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n", |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 840 | (unsigned long)(png_uint_32)(key_len + lang_len + lang_key_len |
| 841 | + text_length + 4), |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 842 | (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 843 | |
| 844 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 845 | (png_size_t)(key_len)); |
| 846 | *(textp->key+key_len) = '\0'; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 847 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 848 | if (text_ptr[i].compression > 0) |
| 849 | { |
| 850 | textp->lang=textp->key + key_len + 1; |
| 851 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
| 852 | *(textp->lang+lang_len) = '\0'; |
| 853 | textp->lang_key=textp->lang + lang_len + 1; |
| 854 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
| 855 | *(textp->lang_key+lang_key_len) = '\0'; |
| 856 | textp->text=textp->lang_key + lang_key_len + 1; |
| 857 | } |
| 858 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 859 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 860 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 861 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 862 | textp->lang=NULL; |
| 863 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 864 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 865 | textp->text=textp->key + key_len + 1; |
| 866 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 867 | if(text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 868 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 869 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 870 | *(textp->text+text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 871 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 872 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 873 | if(textp->compression > 0) |
| 874 | { |
| 875 | textp->text_length = 0; |
| 876 | textp->itxt_length = text_length; |
| 877 | } |
| 878 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 879 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 880 | { |
| 881 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 882 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 883 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 884 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 885 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 886 | info_ptr->text[info_ptr->num_text]= *textp; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 887 | info_ptr->num_text++; |
| 888 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 889 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 890 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 891 | } |
| 892 | #endif |
| 893 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 894 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 895 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 896 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 897 | { |
| 898 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 899 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 900 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 901 | return; |
| 902 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 903 | png_memcpy(&(info_ptr->mod_time), mod_time, sizeof(png_time)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 904 | info_ptr->valid |= PNG_INFO_tIME; |
| 905 | } |
| 906 | #endif |
| 907 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 908 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 909 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 910 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 911 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 912 | { |
| 913 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 914 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 915 | return; |
| 916 | |
| 917 | if (trans != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 918 | { |
| 919 | /* |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 920 | * It may not actually be necessary to set png_ptr->trans here; |
| 921 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 922 | * function used to do the allocation. |
| 923 | */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 924 | #ifdef PNG_FREE_ME_SUPPORTED |
| 925 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 926 | #endif |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 927 | /* 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] | 928 | png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 929 | PNG_MAX_PALETTE_LENGTH); |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 930 | if (num_trans <= PNG_MAX_PALETTE_LENGTH) |
| 931 | png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 932 | #ifdef PNG_FREE_ME_SUPPORTED |
| 933 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 934 | #else |
| 935 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 936 | #endif |
| 937 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 938 | |
| 939 | if (trans_values != NULL) |
| 940 | { |
| 941 | png_memcpy(&(info_ptr->trans_values), trans_values, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 942 | sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 943 | if (num_trans == 0) |
| 944 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 945 | } |
| 946 | info_ptr->num_trans = (png_uint_16)num_trans; |
| 947 | info_ptr->valid |= PNG_INFO_tRNS; |
| 948 | } |
| 949 | #endif |
| 950 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 951 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 952 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 953 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 954 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame^] | 955 | /* |
| 956 | * entries - array of png_sPLT_t structures |
| 957 | * to be added to the list of palettes |
| 958 | * in the info structure. |
| 959 | * nentries - number of palette structures to be |
| 960 | * added. |
| 961 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 962 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 963 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 964 | int i; |
| 965 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 966 | if (png_ptr == NULL || info_ptr == NULL) |
| 967 | return; |
| 968 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 969 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 970 | (info_ptr->splt_palettes_num + nentries) * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 971 | if (np == NULL) |
| 972 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 973 | png_warning(png_ptr, "No memory for sPLT palettes"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 974 | return; |
| 975 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 976 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 977 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 978 | info_ptr->splt_palettes_num * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 979 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 980 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 981 | |
| 982 | for (i = 0; i < nentries; i++) |
| 983 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 984 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 985 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 986 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 987 | to->name = (png_charp)png_malloc(png_ptr, png_strlen(from->name) + 1); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 988 | /* TODO: use png_malloc_warn */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 989 | png_strcpy(to->name, from->name); |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 990 | to->entries = (png_sPLT_entryp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame^] | 991 | from->nentries * sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 992 | /* TODO: use png_malloc_warn */ |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 993 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame^] | 994 | from->nentries * sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 995 | to->nentries = from->nentries; |
| 996 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | info_ptr->splt_palettes = np; |
| 1000 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1001 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1002 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1003 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1004 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1005 | } |
| 1006 | #endif /* PNG_sPLT_SUPPORTED */ |
| 1007 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 1008 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1009 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1010 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1011 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1012 | { |
| 1013 | png_unknown_chunkp np; |
| 1014 | int i; |
| 1015 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1016 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 1017 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1018 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1019 | np = (png_unknown_chunkp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1020 | (info_ptr->unknown_chunks_num + num_unknowns) * |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1021 | sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1022 | if (np == NULL) |
| 1023 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1024 | png_warning(png_ptr, "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1025 | return; |
| 1026 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1027 | |
| 1028 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1029 | info_ptr->unknown_chunks_num * sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1030 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 1031 | info_ptr->unknown_chunks=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1032 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1033 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1034 | { |
| 1035 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 1036 | png_unknown_chunkp from = unknowns + i; |
| 1037 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1038 | png_strncpy((png_charp)to->name, (png_charp)from->name, 5); |
| 1039 | to->data = (png_bytep)png_malloc_warn(png_ptr, from->size); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1040 | if (to->data == NULL) |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1041 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1042 | png_warning(png_ptr, "Out of memory processing unknown chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1043 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1044 | else |
| 1045 | { |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1046 | png_memcpy(to->data, from->data, from->size); |
| 1047 | to->size = from->size; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1048 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1049 | /* note our location in the read or write sequence */ |
| 1050 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 1051 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1055 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1056 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1057 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1058 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1059 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1060 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1061 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 1062 | int chunk, int location) |
| 1063 | { |
Glenn Randers-Pehrson | d56aca7 | 2000-11-23 11:51:42 -0600 | [diff] [blame] | 1064 | if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1065 | (int)info_ptr->unknown_chunks_num) |
| 1066 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1067 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1068 | #endif |
| 1069 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1070 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 1071 | png_uint_32 PNGAPI |
| 1072 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 1073 | { |
| 1074 | png_debug(1, "in png_permit_mng_features\n"); |
| 1075 | if (png_ptr == NULL) |
| 1076 | return (png_uint_32)0; |
| 1077 | png_ptr->mng_features_permitted = |
| 1078 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 1079 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1080 | } |
| 1081 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1082 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1083 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1084 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1085 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 1086 | chunk_list, int num_chunks) |
| 1087 | { |
| 1088 | png_bytep new_list, p; |
| 1089 | int i, old_num_chunks; |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1090 | if (png_ptr == NULL) |
| 1091 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1092 | if (num_chunks == 0) |
| 1093 | { |
Glenn Randers-Pehrson | dff799e | 2004-08-07 21:42:49 -0500 | [diff] [blame] | 1094 | 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] | 1095 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 1096 | else |
| 1097 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1098 | |
Glenn Randers-Pehrson | dff799e | 2004-08-07 21:42:49 -0500 | [diff] [blame] | 1099 | if(keep == PNG_HANDLE_CHUNK_ALWAYS) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1100 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1101 | else |
| 1102 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1103 | return; |
| 1104 | } |
| 1105 | if (chunk_list == NULL) |
| 1106 | return; |
| 1107 | old_num_chunks=png_ptr->num_chunk_list; |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1108 | new_list=(png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1109 | (png_size_t)(5*(num_chunks+old_num_chunks))); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 1110 | if(png_ptr->chunk_list != NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1111 | { |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1112 | png_memcpy(new_list, png_ptr->chunk_list, |
| 1113 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1114 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 1115 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1116 | } |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1117 | png_memcpy(new_list+5*old_num_chunks, chunk_list, |
| 1118 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1119 | for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5) |
| 1120 | *p=(png_byte)keep; |
| 1121 | png_ptr->num_chunk_list=old_num_chunks+num_chunks; |
| 1122 | png_ptr->chunk_list=new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1123 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1124 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1125 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1126 | } |
| 1127 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1128 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1129 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1130 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1131 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 1132 | png_user_chunk_ptr read_user_chunk_fn) |
| 1133 | { |
| 1134 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1135 | if (png_ptr == NULL) |
| 1136 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1137 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1138 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1139 | } |
| 1140 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1141 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1142 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1143 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1144 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1145 | { |
| 1146 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1147 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1148 | if (png_ptr == NULL || info_ptr == NULL) |
| 1149 | return; |
| 1150 | |
Glenn Randers-Pehrson | ec61c23 | 2000-05-16 06:17:36 -0500 | [diff] [blame] | 1151 | if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1152 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1153 | info_ptr->row_pointers = row_pointers; |
| 1154 | if(row_pointers) |
| 1155 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1156 | } |
| 1157 | #endif |
| 1158 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1159 | #ifdef PNG_WRITE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1160 | void PNGAPI |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1161 | png_set_compression_buffer_size(png_structp png_ptr, png_size_t size) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1162 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1163 | if (png_ptr == NULL) |
| 1164 | return; |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1165 | if(png_ptr->zbuf) |
| 1166 | png_free(png_ptr, png_ptr->zbuf); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 1167 | png_ptr->zbuf_size = size; |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1168 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
| 1169 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 1170 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 1171 | } |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 1172 | #endif |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1173 | |
| 1174 | void PNGAPI |
| 1175 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 1176 | { |
| 1177 | if (png_ptr && info_ptr) |
| 1178 | info_ptr->valid &= ~(mask); |
| 1179 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1180 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1181 | |
| 1182 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1183 | /* this function was added to libpng 1.2.0 and should always exist by default */ |
| 1184 | void PNGAPI |
| 1185 | png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) |
| 1186 | { |
| 1187 | png_uint_32 settable_asm_flags; |
| 1188 | png_uint_32 settable_mmx_flags; |
| 1189 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1190 | if (png_ptr == NULL) |
| 1191 | return; |
| 1192 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1193 | settable_mmx_flags = |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 1194 | #ifdef PNG_MMX_CODE_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1195 | #ifdef PNG_HAVE_MMX_COMBINE_ROW |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1196 | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW | |
| 1197 | #endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1198 | #ifdef PNG_HAVE_MMX_READ_INTERLACE |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1199 | PNG_ASM_FLAG_MMX_READ_INTERLACE | |
| 1200 | #endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1201 | #ifdef PNG_HAVE_MMX_READ_FILTER_ROW |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1202 | PNG_ASM_FLAG_MMX_READ_FILTER_SUB | |
| 1203 | PNG_ASM_FLAG_MMX_READ_FILTER_UP | |
| 1204 | PNG_ASM_FLAG_MMX_READ_FILTER_AVG | |
| 1205 | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH | |
| 1206 | #endif |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 1207 | #endif |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1208 | 0; |
| 1209 | |
| 1210 | /* could be some non-MMX ones in the future, but not currently: */ |
| 1211 | settable_asm_flags = settable_mmx_flags; |
| 1212 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1213 | #ifdef PNG_MMX_CODE_SUPPORTED |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1214 | if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) || |
| 1215 | !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)) |
| 1216 | { |
| 1217 | /* clear all MMX flags if MMX isn't supported */ |
| 1218 | settable_asm_flags &= ~settable_mmx_flags; |
| 1219 | png_ptr->asm_flags &= ~settable_mmx_flags; |
| 1220 | } |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1221 | #endif |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1222 | |
| 1223 | /* we're replacing the settable bits with those passed in by the user, |
Glenn Randers-Pehrson | ebd7f9a | 2006-10-19 09:37:56 -0500 | [diff] [blame] | 1224 | * so first zero them out of the master copy, then bitwise-OR in the |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1225 | * allowed subset that was requested */ |
| 1226 | |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 1227 | png_ptr->asm_flags &= ~settable_asm_flags; /* zero them */ |
| 1228 | png_ptr->asm_flags |= (asm_flags & settable_asm_flags); /* set them */ |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1229 | } |
| 1230 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
| 1231 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1232 | #ifdef PNG_MMX_CODE_SUPPORTED |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1233 | /* this function was added to libpng 1.2.0 */ |
| 1234 | void PNGAPI |
| 1235 | png_set_mmx_thresholds (png_structp png_ptr, |
| 1236 | png_byte mmx_bitdepth_threshold, |
| 1237 | png_uint_32 mmx_rowbytes_threshold) |
| 1238 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1239 | if (png_ptr == NULL) |
| 1240 | return; |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1241 | png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold; |
| 1242 | png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold; |
| 1243 | } |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 1244 | #endif /* ?PNG_MMX_CODE_SUPPORTED */ |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1245 | |
| 1246 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
| 1247 | /* this function was added to libpng 1.2.6 */ |
| 1248 | void PNGAPI |
| 1249 | png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, |
| 1250 | png_uint_32 user_height_max) |
| 1251 | { |
| 1252 | /* Images with dimensions larger than these limits will be |
| 1253 | * rejected by png_set_IHDR(). To accept any PNG datastream |
| 1254 | * regardless of dimensions, set both limits to 0x7ffffffL. |
| 1255 | */ |
| 1256 | png_ptr->user_width_max = user_width_max; |
| 1257 | png_ptr->user_height_max = user_height_max; |
| 1258 | } |
| 1259 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ |
| 1260 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1261 | |
| 1262 | #if defined(PNG_BENIGN_ERRORS_SUPPORTED) |
| 1263 | void PNGAPI |
| 1264 | png_set_benign_errors(png_structp png_ptr, int allowed) |
| 1265 | { |
| 1266 | png_debug(1, "in png_set_benign_errors\n"); |
| 1267 | if (allowed) |
| 1268 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; |
| 1269 | else |
| 1270 | png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; |
| 1271 | } |
| 1272 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ |
| 1273 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 1274 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |