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 | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 4 | * libpng 1.2.6beta4 - July 28, 2004 |
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 | 5b5dcf8 | 2004-07-17 22:45:44 -0500 | [diff] [blame] | 6 | * Copyright (c) 1998-2004 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 | |
| 16 | #define PNG_INTERNAL |
| 17 | #include "png.h" |
| 18 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 19 | #if defined(PNG_bKGD_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 20 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 21 | png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background) |
| 22 | { |
| 23 | png_debug1(1, "in %s storage function\n", "bKGD"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 24 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 25 | return; |
| 26 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 27 | png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 28 | info_ptr->valid |= PNG_INFO_bKGD; |
| 29 | } |
| 30 | #endif |
| 31 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 32 | #if defined(PNG_cHRM_SUPPORTED) |
| 33 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 34 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 35 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, |
| 36 | double white_x, double white_y, double red_x, double red_y, |
| 37 | double green_x, double green_y, double blue_x, double blue_y) |
| 38 | { |
| 39 | png_debug1(1, "in %s storage function\n", "cHRM"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 40 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 41 | return; |
| 42 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 43 | if (white_x < 0.0 || white_y < 0.0 || |
| 44 | red_x < 0.0 || red_y < 0.0 || |
| 45 | green_x < 0.0 || green_y < 0.0 || |
| 46 | blue_x < 0.0 || blue_y < 0.0) |
| 47 | { |
| 48 | png_warning(png_ptr, |
| 49 | "Ignoring attempt to set negative chromaticity value"); |
| 50 | return; |
| 51 | } |
| 52 | if (white_x > 21474.83 || white_y > 21474.83 || |
| 53 | red_x > 21474.83 || red_y > 21474.83 || |
| 54 | green_x > 21474.83 || green_y > 21474.83 || |
| 55 | blue_x > 21474.83 || blue_y > 21474.83) |
| 56 | { |
| 57 | png_warning(png_ptr, |
| 58 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 59 | return; |
| 60 | } |
| 61 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 62 | info_ptr->x_white = (float)white_x; |
| 63 | info_ptr->y_white = (float)white_y; |
| 64 | info_ptr->x_red = (float)red_x; |
| 65 | info_ptr->y_red = (float)red_y; |
| 66 | info_ptr->x_green = (float)green_x; |
| 67 | info_ptr->y_green = (float)green_y; |
| 68 | info_ptr->x_blue = (float)blue_x; |
| 69 | info_ptr->y_blue = (float)blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 70 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 71 | info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); |
| 72 | 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] | 73 | info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5); |
| 74 | 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] | 75 | info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); |
| 76 | 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] | 77 | info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5); |
| 78 | 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] | 79 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 80 | info_ptr->valid |= PNG_INFO_cHRM; |
| 81 | } |
| 82 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 83 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 84 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 85 | 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] | 86 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, |
| 87 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, |
| 88 | png_fixed_point blue_x, png_fixed_point blue_y) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 89 | { |
| 90 | png_debug1(1, "in %s storage function\n", "cHRM"); |
| 91 | if (png_ptr == NULL || info_ptr == NULL) |
| 92 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 93 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 94 | if (white_x < 0 || white_y < 0 || |
| 95 | red_x < 0 || red_y < 0 || |
| 96 | green_x < 0 || green_y < 0 || |
| 97 | blue_x < 0 || blue_y < 0) |
| 98 | { |
| 99 | png_warning(png_ptr, |
| 100 | "Ignoring attempt to set negative chromaticity value"); |
| 101 | return; |
| 102 | } |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 103 | if (white_x > (double) PNG_UINT_31_MAX || |
| 104 | white_y > (double) PNG_UINT_31_MAX || |
| 105 | red_x > (double) PNG_UINT_31_MAX || |
| 106 | red_y > (double) PNG_UINT_31_MAX || |
| 107 | green_x > (double) PNG_UINT_31_MAX || |
| 108 | green_y > (double) PNG_UINT_31_MAX || |
| 109 | blue_x > (double) PNG_UINT_31_MAX || |
| 110 | blue_y > (double) PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 111 | { |
| 112 | png_warning(png_ptr, |
| 113 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 114 | return; |
| 115 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 116 | info_ptr->int_x_white = white_x; |
| 117 | info_ptr->int_y_white = white_y; |
| 118 | info_ptr->int_x_red = red_x; |
| 119 | info_ptr->int_y_red = red_y; |
| 120 | info_ptr->int_x_green = green_x; |
| 121 | info_ptr->int_y_green = green_y; |
| 122 | info_ptr->int_x_blue = blue_x; |
| 123 | info_ptr->int_y_blue = blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 124 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 125 | info_ptr->x_white = (float)(white_x/100000.); |
| 126 | info_ptr->y_white = (float)(white_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 127 | info_ptr->x_red = (float)( red_x/100000.); |
| 128 | info_ptr->y_red = (float)( red_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 129 | info_ptr->x_green = (float)(green_x/100000.); |
| 130 | info_ptr->y_green = (float)(green_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 131 | info_ptr->x_blue = (float)( blue_x/100000.); |
| 132 | info_ptr->y_blue = (float)( blue_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 133 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 134 | info_ptr->valid |= PNG_INFO_cHRM; |
| 135 | } |
| 136 | #endif |
| 137 | #endif |
| 138 | |
| 139 | #if defined(PNG_gAMA_SUPPORTED) |
| 140 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 141 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 142 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 143 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 144 | double gamma; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 145 | png_debug1(1, "in %s storage function\n", "gAMA"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 146 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 147 | return; |
| 148 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 149 | /* Check for overflow */ |
| 150 | if (file_gamma > 21474.83) |
| 151 | { |
| 152 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
| 153 | gamma=21474.83; |
| 154 | } |
| 155 | else |
| 156 | gamma=file_gamma; |
| 157 | info_ptr->gamma = (float)gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 158 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 159 | info_ptr->int_gamma = (int)(gamma*100000.+.5); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 160 | #endif |
| 161 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 162 | if(gamma == 0.0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 163 | png_warning(png_ptr, "Setting gamma=0"); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 164 | } |
| 165 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 166 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 167 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 168 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 169 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 170 | png_fixed_point gamma; |
| 171 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 172 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 173 | if (png_ptr == NULL || info_ptr == NULL) |
| 174 | return; |
| 175 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 176 | if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 177 | { |
| 178 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 179 | gamma=PNG_UINT_31_MAX; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 180 | } |
| 181 | else |
| 182 | { |
| 183 | if (int_gamma < 0) |
| 184 | { |
| 185 | png_warning(png_ptr, "Setting negative gamma to zero"); |
| 186 | gamma=0; |
| 187 | } |
| 188 | else |
| 189 | gamma=int_gamma; |
| 190 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 191 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 192 | info_ptr->gamma = (float)(gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 193 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 194 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 195 | info_ptr->int_gamma = gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 196 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 197 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 198 | if(gamma == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 199 | png_warning(png_ptr, "Setting gamma=0"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 200 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 201 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 202 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 203 | #if defined(PNG_hIST_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 204 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 205 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 206 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 207 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 208 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 209 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 210 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 211 | return; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 212 | if (info_ptr->num_palette == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 213 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 214 | png_warning(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 215 | "Palette size 0, hIST allocation skipped."); |
| 216 | return; |
| 217 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 218 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 219 | #ifdef PNG_FREE_ME_SUPPORTED |
| 220 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 221 | #endif |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 222 | /* Changed from info->num_palette to 256 in version 1.2.1 */ |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 223 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 224 | (png_uint_32)(256 * png_sizeof (png_uint_16))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 225 | if (png_ptr->hist == NULL) |
| 226 | { |
| 227 | png_warning(png_ptr, "Insufficient memory for hIST chunk data."); |
| 228 | return; |
| 229 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 230 | |
| 231 | for (i = 0; i < info_ptr->num_palette; i++) |
| 232 | png_ptr->hist[i] = hist[i]; |
| 233 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 234 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 235 | |
| 236 | #ifdef PNG_FREE_ME_SUPPORTED |
| 237 | info_ptr->free_me |= PNG_FREE_HIST; |
| 238 | #else |
| 239 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 240 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 241 | } |
| 242 | #endif |
| 243 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 244 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 245 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 246 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 247 | int color_type, int interlace_type, int compression_type, |
| 248 | int filter_type) |
| 249 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 250 | int rowbytes_per_pixel; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 251 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 252 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 253 | return; |
| 254 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 255 | /* check for width and height valid values */ |
| 256 | if (width == 0 || height == 0) |
| 257 | png_error(png_ptr, "Image width or height is zero in IHDR"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 258 | if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 259 | png_error(png_ptr, "Invalid image size in IHDR"); |
| 260 | |
| 261 | /* check other values */ |
| 262 | if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && |
| 263 | bit_depth != 8 && bit_depth != 16) |
| 264 | png_error(png_ptr, "Invalid bit depth in IHDR"); |
| 265 | |
| 266 | if (color_type < 0 || color_type == 1 || |
| 267 | color_type == 5 || color_type > 6) |
| 268 | png_error(png_ptr, "Invalid color type in IHDR"); |
| 269 | |
| 270 | if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || |
| 271 | ((color_type == PNG_COLOR_TYPE_RGB || |
| 272 | color_type == PNG_COLOR_TYPE_GRAY_ALPHA || |
| 273 | color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) |
| 274 | png_error(png_ptr, "Invalid color type/bit depth combination in IHDR"); |
| 275 | |
| 276 | if (interlace_type >= PNG_INTERLACE_LAST) |
| 277 | png_error(png_ptr, "Unknown interlace method in IHDR"); |
| 278 | |
| 279 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 280 | png_error(png_ptr, "Unknown compression method in IHDR"); |
| 281 | |
| 282 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 283 | /* Accept filter_method 64 (intrapixel differencing) only if |
| 284 | * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and |
| 285 | * 2. Libpng did not read a PNG signature (this filter_method is only |
| 286 | * used in PNG datastreams that are embedded in MNG datastreams) and |
| 287 | * 3. The application called png_permit_mng_features with a mask that |
| 288 | * included PNG_FLAG_MNG_FILTER_64 and |
| 289 | * 4. The filter_method is 64 and |
| 290 | * 5. The color_type is RGB or RGBA |
| 291 | */ |
| 292 | if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted) |
| 293 | png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n"); |
| 294 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 295 | { |
| 296 | if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && |
| 297 | (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && |
| 298 | ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && |
| 299 | (color_type == PNG_COLOR_TYPE_RGB || |
| 300 | color_type == PNG_COLOR_TYPE_RGB_ALPHA))) |
| 301 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 302 | if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) |
| 303 | png_warning(png_ptr, "Invalid filter method in IHDR"); |
| 304 | } |
| 305 | #else |
| 306 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 307 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 308 | #endif |
| 309 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 310 | info_ptr->width = width; |
| 311 | info_ptr->height = height; |
| 312 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 313 | info_ptr->color_type =(png_byte) color_type; |
| 314 | info_ptr->compression_type = (png_byte)compression_type; |
| 315 | info_ptr->filter_type = (png_byte)filter_type; |
| 316 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 317 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 318 | info_ptr->channels = 1; |
| 319 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 320 | info_ptr->channels = 3; |
| 321 | else |
| 322 | info_ptr->channels = 1; |
| 323 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 324 | info_ptr->channels++; |
| 325 | 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] | 326 | |
| 327 | /* check for overflow */ |
| 328 | rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 329 | if ( width > PNG_UINT_32_MAX/rowbytes_per_pixel - 64) |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 330 | { |
| 331 | png_warning(png_ptr, |
| 332 | "Width too large to process image data; rowbytes will overflow."); |
| 333 | info_ptr->rowbytes = (png_size_t)0; |
| 334 | } |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 335 | else |
| 336 | info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 337 | } |
| 338 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 339 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 340 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 341 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 342 | 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] | 343 | { |
| 344 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 345 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 346 | return; |
| 347 | |
| 348 | info_ptr->x_offset = offset_x; |
| 349 | info_ptr->y_offset = offset_y; |
| 350 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 351 | info_ptr->valid |= PNG_INFO_oFFs; |
| 352 | } |
| 353 | #endif |
| 354 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 355 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 356 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 357 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 358 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 359 | png_charp units, png_charpp params) |
| 360 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 361 | png_uint_32 length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 362 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 363 | |
| 364 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 365 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 366 | return; |
| 367 | |
| 368 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 369 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 370 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); |
| 371 | if (info_ptr->pcal_purpose == NULL) |
| 372 | { |
| 373 | png_warning(png_ptr, "Insufficient memory for pCAL purpose."); |
| 374 | return; |
| 375 | } |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 376 | png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 377 | |
| 378 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 379 | info_ptr->pcal_X0 = X0; |
| 380 | info_ptr->pcal_X1 = X1; |
| 381 | info_ptr->pcal_type = (png_byte)type; |
| 382 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 383 | |
| 384 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 385 | png_debug1(3, "allocating units for info (%lu bytes)\n", length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 386 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); |
| 387 | if (info_ptr->pcal_units == NULL) |
| 388 | { |
| 389 | png_warning(png_ptr, "Insufficient memory for pCAL units."); |
| 390 | return; |
| 391 | } |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 392 | png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 393 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 394 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 395 | (png_uint_32)((nparams + 1) * png_sizeof(png_charp))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 396 | if (info_ptr->pcal_params == NULL) |
| 397 | { |
| 398 | png_warning(png_ptr, "Insufficient memory for pCAL params."); |
| 399 | return; |
| 400 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 401 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 402 | info_ptr->pcal_params[nparams] = NULL; |
| 403 | |
| 404 | for (i = 0; i < nparams; i++) |
| 405 | { |
| 406 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 407 | png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i, length); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 408 | info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); |
| 409 | if (info_ptr->pcal_params[i] == NULL) |
| 410 | { |
| 411 | png_warning(png_ptr, "Insufficient memory for pCAL parameter."); |
| 412 | return; |
| 413 | } |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 414 | png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 418 | #ifdef PNG_FREE_ME_SUPPORTED |
| 419 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 420 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 421 | } |
| 422 | #endif |
| 423 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 424 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 425 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 426 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 427 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 428 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 429 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 430 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 431 | if (png_ptr == NULL || info_ptr == NULL) |
| 432 | return; |
| 433 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 434 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 435 | info_ptr->scal_pixel_width = width; |
| 436 | info_ptr->scal_pixel_height = height; |
| 437 | |
| 438 | info_ptr->valid |= PNG_INFO_sCAL; |
| 439 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 440 | #else |
| 441 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 442 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 443 | 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] | 444 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 445 | { |
| 446 | png_uint_32 length; |
| 447 | |
| 448 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 449 | if (png_ptr == NULL || info_ptr == NULL) |
| 450 | return; |
| 451 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 452 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 453 | |
| 454 | length = png_strlen(swidth) + 1; |
| 455 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 456 | info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length); |
| 457 | if (info_ptr->scal_s_width == NULL) |
| 458 | { |
| 459 | png_warning(png_ptr, "Memory allocation failed while processing sCAL."); |
| 460 | } |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 461 | png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 462 | |
| 463 | length = png_strlen(sheight) + 1; |
| 464 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 465 | info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length); |
| 466 | if (info_ptr->scal_s_height == NULL) |
| 467 | { |
| 468 | png_free (png_ptr, info_ptr->scal_s_width); |
| 469 | png_warning(png_ptr, "Memory allocation failed while processing sCAL."); |
| 470 | } |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 471 | png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 472 | |
| 473 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 474 | #ifdef PNG_FREE_ME_SUPPORTED |
| 475 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 476 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 477 | } |
| 478 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 479 | #endif |
| 480 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 481 | |
| 482 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 483 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 484 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 485 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 486 | { |
| 487 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 488 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 489 | return; |
| 490 | |
| 491 | info_ptr->x_pixels_per_unit = res_x; |
| 492 | info_ptr->y_pixels_per_unit = res_y; |
| 493 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 494 | info_ptr->valid |= PNG_INFO_pHYs; |
| 495 | } |
| 496 | #endif |
| 497 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 498 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 499 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 500 | png_colorp palette, int num_palette) |
| 501 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 502 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 503 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 504 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 505 | return; |
| 506 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 507 | /* |
| 508 | * It may not actually be necessary to set png_ptr->palette here; |
| 509 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 510 | * function used to do the allocation. |
| 511 | */ |
| 512 | #ifdef PNG_FREE_ME_SUPPORTED |
| 513 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 514 | #endif |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 515 | |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 516 | /* Changed in libpng-1.2.1 to allocate 256 instead of num_palette entries, |
| 517 | 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^] | 518 | png_ptr->palette = (png_colorp)png_malloc(png_ptr, |
| 519 | 256 * png_sizeof(png_color)); |
| 520 | png_memset(png_ptr->palette, 0, 256 * png_sizeof(png_color)); |
| 521 | 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] | 522 | info_ptr->palette = png_ptr->palette; |
| 523 | 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] | 524 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 525 | #ifdef PNG_FREE_ME_SUPPORTED |
| 526 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 527 | #else |
| 528 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 529 | #endif |
| 530 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 531 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 532 | } |
| 533 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 534 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 535 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 536 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 537 | png_color_8p sig_bit) |
| 538 | { |
| 539 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 540 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 541 | return; |
| 542 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 543 | 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] | 544 | info_ptr->valid |= PNG_INFO_sBIT; |
| 545 | } |
| 546 | #endif |
| 547 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 548 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 549 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 550 | 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] | 551 | { |
| 552 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 553 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 554 | return; |
| 555 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 556 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 557 | info_ptr->valid |= PNG_INFO_sRGB; |
| 558 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 559 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 560 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 561 | 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] | 562 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 563 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 564 | #if defined(PNG_gAMA_SUPPORTED) |
| 565 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 566 | float file_gamma; |
| 567 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 568 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 569 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 570 | #endif |
| 571 | #endif |
| 572 | #if defined(PNG_cHRM_SUPPORTED) |
| 573 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 574 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 575 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 576 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 577 | 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] | 578 | int_green_y, int_blue_x, int_blue_y; |
| 579 | #endif |
| 580 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 581 | 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] | 582 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 583 | return; |
| 584 | |
| 585 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 586 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 587 | #if defined(PNG_gAMA_SUPPORTED) |
| 588 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 589 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 590 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 591 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 592 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 593 | int_file_gamma = 45455L; |
| 594 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 595 | #endif |
| 596 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 597 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 598 | #if defined(PNG_cHRM_SUPPORTED) |
| 599 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 600 | int_white_x = 31270L; |
| 601 | int_white_y = 32900L; |
| 602 | int_red_x = 64000L; |
| 603 | int_red_y = 33000L; |
| 604 | int_green_x = 30000L; |
| 605 | int_green_y = 60000L; |
| 606 | int_blue_x = 15000L; |
| 607 | int_blue_y = 6000L; |
| 608 | |
| 609 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 610 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 611 | int_blue_x, int_blue_y); |
| 612 | #endif |
| 613 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 614 | white_x = (float).3127; |
| 615 | white_y = (float).3290; |
| 616 | red_x = (float).64; |
| 617 | red_y = (float).33; |
| 618 | green_x = (float).30; |
| 619 | green_y = (float).60; |
| 620 | blue_x = (float).15; |
| 621 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 622 | |
| 623 | png_set_cHRM(png_ptr, info_ptr, |
| 624 | 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] | 625 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 626 | #endif |
| 627 | } |
| 628 | #endif |
| 629 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 630 | |
| 631 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 632 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 633 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 634 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 635 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 636 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 637 | png_charp new_iccp_name; |
| 638 | png_charp new_iccp_profile; |
| 639 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 640 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 641 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 642 | return; |
| 643 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 644 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, png_strlen(name)+1); |
| 645 | if (new_iccp_name == NULL) |
| 646 | { |
| 647 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk."); |
| 648 | return; |
| 649 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 650 | png_strcpy(new_iccp_name, name); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 651 | new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen); |
| 652 | if (new_iccp_profile == NULL) |
| 653 | { |
| 654 | png_free (png_ptr, new_iccp_name); |
| 655 | png_warning(png_ptr, "Insufficient memory to process iCCP profile."); |
| 656 | return; |
| 657 | } |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 658 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 659 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 660 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 661 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 662 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 663 | info_ptr->iccp_name = new_iccp_name; |
| 664 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 665 | /* 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] | 666 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 667 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 668 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 669 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 670 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 671 | info_ptr->valid |= PNG_INFO_iCCP; |
| 672 | } |
| 673 | #endif |
| 674 | |
| 675 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 676 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 677 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 678 | int num_text) |
| 679 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 680 | int ret; |
| 681 | ret=png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); |
| 682 | if (ret) |
| 683 | png_error(png_ptr, "Insufficient memory to store text"); |
| 684 | } |
| 685 | |
| 686 | int /* PRIVATE */ |
| 687 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 688 | int num_text) |
| 689 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 690 | int i; |
| 691 | |
| 692 | 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] | 693 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 694 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 695 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 696 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 697 | |
| 698 | /* Make sure we have enough space in the "text" array in info_struct |
| 699 | * to hold all of the incoming text_ptr objects. |
| 700 | */ |
| 701 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 702 | { |
| 703 | if (info_ptr->text != NULL) |
| 704 | { |
| 705 | png_textp old_text; |
| 706 | int old_max; |
| 707 | |
| 708 | old_max = info_ptr->max_text; |
| 709 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 710 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 711 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 712 | (png_uint_32)(info_ptr->max_text * png_sizeof (png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 713 | if (info_ptr->text == NULL) |
| 714 | { |
| 715 | png_free(png_ptr, old_text); |
| 716 | return(1); |
| 717 | } |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 718 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 719 | png_sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 720 | png_free(png_ptr, old_text); |
| 721 | } |
| 722 | else |
| 723 | { |
| 724 | info_ptr->max_text = num_text + 8; |
| 725 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 726 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 727 | (png_uint_32)(info_ptr->max_text * png_sizeof (png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 728 | if (info_ptr->text == NULL) |
| 729 | return(1); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 730 | #ifdef PNG_FREE_ME_SUPPORTED |
| 731 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 732 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 733 | } |
| 734 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 735 | info_ptr->max_text); |
| 736 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 737 | for (i = 0; i < num_text; i++) |
| 738 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 739 | png_size_t text_length,key_len; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 740 | png_size_t lang_len,lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 741 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 742 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 743 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 744 | continue; |
| 745 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 746 | key_len = png_strlen(text_ptr[i].key); |
| 747 | |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 748 | if(text_ptr[i].compression <= 0) |
| 749 | { |
| 750 | lang_len = 0; |
| 751 | lang_key_len = 0; |
| 752 | } |
| 753 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 754 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 755 | { |
| 756 | /* set iTXt data */ |
Glenn Randers-Pehrson | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame] | 757 | if (text_ptr[i].lang != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 758 | lang_len = png_strlen(text_ptr[i].lang); |
| 759 | else |
| 760 | lang_len = 0; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 761 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 762 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 763 | else |
| 764 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 765 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 766 | #else |
| 767 | { |
| 768 | png_warning(png_ptr, "iTXt chunk not supported."); |
| 769 | continue; |
| 770 | } |
| 771 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 772 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 773 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 774 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 775 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 776 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 777 | if(text_ptr[i].compression > 0) |
| 778 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 779 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 780 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 781 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 782 | } |
| 783 | else |
| 784 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 785 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 786 | textp->compression = text_ptr[i].compression; |
| 787 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 788 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 789 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 790 | (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 791 | if (textp->key == NULL) |
| 792 | return(1); |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 793 | png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n", |
| 794 | (png_uint_32)(key_len + lang_len + lang_key_len + text_length + 4), |
| 795 | (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 796 | |
| 797 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 798 | (png_size_t)(key_len)); |
| 799 | *(textp->key+key_len) = '\0'; |
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 | if (text_ptr[i].compression > 0) |
| 802 | { |
| 803 | textp->lang=textp->key + key_len + 1; |
| 804 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
| 805 | *(textp->lang+lang_len) = '\0'; |
| 806 | textp->lang_key=textp->lang + lang_len + 1; |
| 807 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
| 808 | *(textp->lang_key+lang_key_len) = '\0'; |
| 809 | textp->text=textp->lang_key + lang_key_len + 1; |
| 810 | } |
| 811 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 812 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 813 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 814 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 815 | textp->lang=NULL; |
| 816 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 817 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 818 | textp->text=textp->key + key_len + 1; |
| 819 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 820 | if(text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 821 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 822 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 823 | *(textp->text+text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 824 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 825 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 826 | if(textp->compression > 0) |
| 827 | { |
| 828 | textp->text_length = 0; |
| 829 | textp->itxt_length = text_length; |
| 830 | } |
| 831 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 832 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 833 | { |
| 834 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 835 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 836 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 837 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 838 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 839 | info_ptr->text[info_ptr->num_text]= *textp; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 840 | info_ptr->num_text++; |
| 841 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 842 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 843 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 844 | } |
| 845 | #endif |
| 846 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 847 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 848 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 849 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 850 | { |
| 851 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 852 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 853 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 854 | return; |
| 855 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 856 | png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof (png_time)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 857 | info_ptr->valid |= PNG_INFO_tIME; |
| 858 | } |
| 859 | #endif |
| 860 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 861 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 862 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 863 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 864 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 865 | { |
| 866 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 867 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 868 | return; |
| 869 | |
| 870 | if (trans != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 871 | { |
| 872 | /* |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 873 | * It may not actually be necessary to set png_ptr->trans here; |
| 874 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 875 | * function used to do the allocation. |
| 876 | */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 877 | #ifdef PNG_FREE_ME_SUPPORTED |
| 878 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 879 | #endif |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 880 | /* Changed from num_trans to 256 in version 1.2.1 */ |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 881 | png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 882 | (png_uint_32)256); |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 883 | png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 884 | #ifdef PNG_FREE_ME_SUPPORTED |
| 885 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 886 | #else |
| 887 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 888 | #endif |
| 889 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 890 | |
| 891 | if (trans_values != NULL) |
| 892 | { |
| 893 | png_memcpy(&(info_ptr->trans_values), trans_values, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 894 | png_sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 895 | if (num_trans == 0) |
| 896 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 897 | } |
| 898 | info_ptr->num_trans = (png_uint_16)num_trans; |
| 899 | info_ptr->valid |= PNG_INFO_tRNS; |
| 900 | } |
| 901 | #endif |
| 902 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 903 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 904 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 905 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 906 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 907 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 908 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 909 | int i; |
| 910 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 911 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 912 | (info_ptr->splt_palettes_num + nentries) * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 913 | if (np == NULL) |
| 914 | { |
Glenn Randers-Pehrson | 484a8a1 | 2002-07-07 19:15:20 -0500 | [diff] [blame] | 915 | png_warning(png_ptr, "No memory for sPLT palettes."); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 916 | return; |
| 917 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 918 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 919 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 920 | info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 921 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 922 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 923 | |
| 924 | for (i = 0; i < nentries; i++) |
| 925 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 926 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 927 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 928 | |
| 929 | to->name = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 930 | png_strlen(from->name) + 1); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 931 | /* TODO: use png_malloc_warn */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 932 | png_strcpy(to->name, from->name); |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 933 | to->entries = (png_sPLT_entryp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 934 | from->nentries * png_sizeof(png_sPLT_t)); |
| 935 | /* TODO: use png_malloc_warn */ |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 936 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 937 | from->nentries * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 938 | to->nentries = from->nentries; |
| 939 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 940 | } |
| 941 | |
| 942 | info_ptr->splt_palettes = np; |
| 943 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 944 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 945 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 946 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 947 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 948 | } |
| 949 | #endif /* PNG_sPLT_SUPPORTED */ |
| 950 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 951 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 952 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 953 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 954 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 955 | { |
| 956 | png_unknown_chunkp np; |
| 957 | int i; |
| 958 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 959 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 960 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 961 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 962 | np = (png_unknown_chunkp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 963 | (info_ptr->unknown_chunks_num + num_unknowns) * |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 964 | png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 965 | if (np == NULL) |
| 966 | { |
| 967 | png_warning(png_ptr, "Out of memory while processing unknown chunk."); |
| 968 | return; |
| 969 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 970 | |
| 971 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 972 | info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 973 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 974 | info_ptr->unknown_chunks=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 975 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 976 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 977 | { |
| 978 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 979 | png_unknown_chunkp from = unknowns + i; |
| 980 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 981 | png_strncpy((png_charp)to->name, (png_charp)from->name, 5); |
| 982 | to->data = (png_bytep)png_malloc_warn(png_ptr, from->size); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 983 | if (to->data == NULL) |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 984 | { |
| 985 | png_warning(png_ptr, "Out of memory processing unknown chunk."); |
| 986 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 987 | else |
| 988 | { |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 989 | png_memcpy(to->data, from->data, from->size); |
| 990 | to->size = from->size; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 991 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 992 | /* note our location in the read or write sequence */ |
| 993 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 994 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 998 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 999 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1000 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1001 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1002 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1003 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1004 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 1005 | int chunk, int location) |
| 1006 | { |
Glenn Randers-Pehrson | d56aca7 | 2000-11-23 11:51:42 -0600 | [diff] [blame] | 1007 | if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1008 | (int)info_ptr->unknown_chunks_num) |
| 1009 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1010 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1011 | #endif |
| 1012 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 1013 | #if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ |
| 1014 | defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1015 | void PNGAPI |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1016 | png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) |
| 1017 | { |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1018 | /* This function is deprecated in favor of png_permit_mng_features() |
| 1019 | and will be removed from libpng-2.0.0 */ |
| 1020 | png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1021 | if (png_ptr == NULL) |
| 1022 | return; |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1023 | png_ptr->mng_features_permitted = (png_byte) |
| 1024 | ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) | |
| 1025 | ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); |
| 1026 | } |
| 1027 | #endif |
| 1028 | |
| 1029 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 1030 | png_uint_32 PNGAPI |
| 1031 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 1032 | { |
| 1033 | png_debug(1, "in png_permit_mng_features\n"); |
| 1034 | if (png_ptr == NULL) |
| 1035 | return (png_uint_32)0; |
| 1036 | png_ptr->mng_features_permitted = |
| 1037 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 1038 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1039 | } |
| 1040 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1041 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1042 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1043 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1044 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 1045 | chunk_list, int num_chunks) |
| 1046 | { |
| 1047 | png_bytep new_list, p; |
| 1048 | int i, old_num_chunks; |
| 1049 | if (num_chunks == 0) |
| 1050 | { |
| 1051 | if(keep == HANDLE_CHUNK_ALWAYS || keep == HANDLE_CHUNK_IF_SAFE) |
| 1052 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 1053 | else |
| 1054 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1055 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1056 | if(keep == HANDLE_CHUNK_ALWAYS) |
| 1057 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1058 | else |
| 1059 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 1060 | return; |
| 1061 | } |
| 1062 | if (chunk_list == NULL) |
| 1063 | return; |
| 1064 | old_num_chunks=png_ptr->num_chunk_list; |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1065 | new_list=(png_bytep)png_malloc(png_ptr, |
| 1066 | (png_uint_32)(5*(num_chunks+old_num_chunks))); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 1067 | if(png_ptr->chunk_list != NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1068 | { |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1069 | png_memcpy(new_list, png_ptr->chunk_list, |
| 1070 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1071 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 1072 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1073 | } |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 1074 | png_memcpy(new_list+5*old_num_chunks, chunk_list, |
| 1075 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1076 | for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5) |
| 1077 | *p=(png_byte)keep; |
| 1078 | png_ptr->num_chunk_list=old_num_chunks+num_chunks; |
| 1079 | png_ptr->chunk_list=new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1080 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1081 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 1082 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1083 | } |
| 1084 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1085 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1086 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1087 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1088 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 1089 | png_user_chunk_ptr read_user_chunk_fn) |
| 1090 | { |
| 1091 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
| 1092 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1093 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1094 | } |
| 1095 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1096 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1097 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1098 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1099 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1100 | { |
| 1101 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1102 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1103 | if (png_ptr == NULL || info_ptr == NULL) |
| 1104 | return; |
| 1105 | |
Glenn Randers-Pehrson | ec61c23 | 2000-05-16 06:17:36 -0500 | [diff] [blame] | 1106 | if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1107 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1108 | info_ptr->row_pointers = row_pointers; |
| 1109 | if(row_pointers) |
| 1110 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1111 | } |
| 1112 | #endif |
| 1113 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 1114 | #ifdef PNG_WRITE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1115 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1116 | png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size) |
| 1117 | { |
| 1118 | if(png_ptr->zbuf) |
| 1119 | png_free(png_ptr, png_ptr->zbuf); |
| 1120 | png_ptr->zbuf_size = (png_size_t)size; |
| 1121 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
| 1122 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 1123 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 1124 | } |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame^] | 1125 | #endif |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1126 | |
| 1127 | void PNGAPI |
| 1128 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 1129 | { |
| 1130 | if (png_ptr && info_ptr) |
| 1131 | info_ptr->valid &= ~(mask); |
| 1132 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1133 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1134 | |
Glenn Randers-Pehrson | 377657d | 2002-03-08 01:31:27 -0600 | [diff] [blame] | 1135 | #ifndef PNG_1_0_X |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1136 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1137 | /* this function was added to libpng 1.2.0 and should always exist by default */ |
| 1138 | void PNGAPI |
| 1139 | png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) |
| 1140 | { |
| 1141 | png_uint_32 settable_asm_flags; |
| 1142 | png_uint_32 settable_mmx_flags; |
| 1143 | |
| 1144 | settable_mmx_flags = |
| 1145 | #ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW |
| 1146 | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW | |
| 1147 | #endif |
| 1148 | #ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE |
| 1149 | PNG_ASM_FLAG_MMX_READ_INTERLACE | |
| 1150 | #endif |
| 1151 | #ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW |
| 1152 | PNG_ASM_FLAG_MMX_READ_FILTER_SUB | |
| 1153 | PNG_ASM_FLAG_MMX_READ_FILTER_UP | |
| 1154 | PNG_ASM_FLAG_MMX_READ_FILTER_AVG | |
| 1155 | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH | |
| 1156 | #endif |
| 1157 | 0; |
| 1158 | |
| 1159 | /* could be some non-MMX ones in the future, but not currently: */ |
| 1160 | settable_asm_flags = settable_mmx_flags; |
| 1161 | |
| 1162 | if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) || |
| 1163 | !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)) |
| 1164 | { |
| 1165 | /* clear all MMX flags if MMX isn't supported */ |
| 1166 | settable_asm_flags &= ~settable_mmx_flags; |
| 1167 | png_ptr->asm_flags &= ~settable_mmx_flags; |
| 1168 | } |
| 1169 | |
| 1170 | /* we're replacing the settable bits with those passed in by the user, |
| 1171 | * so first zero them out of the master copy, then logical-OR in the |
| 1172 | * allowed subset that was requested */ |
| 1173 | |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 1174 | png_ptr->asm_flags &= ~settable_asm_flags; /* zero them */ |
| 1175 | png_ptr->asm_flags |= (asm_flags & settable_asm_flags); /* set them */ |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1176 | } |
| 1177 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
| 1178 | |
| 1179 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1180 | /* this function was added to libpng 1.2.0 */ |
| 1181 | void PNGAPI |
| 1182 | png_set_mmx_thresholds (png_structp png_ptr, |
| 1183 | png_byte mmx_bitdepth_threshold, |
| 1184 | png_uint_32 mmx_rowbytes_threshold) |
| 1185 | { |
| 1186 | png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold; |
| 1187 | png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold; |
| 1188 | } |
| 1189 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
Glenn Randers-Pehrson | 377657d | 2002-03-08 01:31:27 -0600 | [diff] [blame] | 1190 | #endif /* ?PNG_1_0_X */ |