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 | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame^] | 4 | * libpng 1.2.2beta5 - March 26, 2002 |
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 | c6de22d | 2002-02-23 18:55:25 -0600 | [diff] [blame] | 6 | * Copyright (c) 1998-2002 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 | |
| 27 | png_memcpy(&(info_ptr->background), background, sizeof(png_color_16)); |
| 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 | } |
| 103 | if (white_x > PNG_MAX_UINT || white_y > PNG_MAX_UINT || |
| 104 | red_x > PNG_MAX_UINT || red_y > PNG_MAX_UINT || |
| 105 | green_x > PNG_MAX_UINT || green_y > PNG_MAX_UINT || |
| 106 | blue_x > PNG_MAX_UINT || blue_y > PNG_MAX_UINT) |
| 107 | { |
| 108 | png_warning(png_ptr, |
| 109 | "Ignoring attempt to set chromaticity value exceeding 21474.83"); |
| 110 | return; |
| 111 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 112 | info_ptr->int_x_white = white_x; |
| 113 | info_ptr->int_y_white = white_y; |
| 114 | info_ptr->int_x_red = red_x; |
| 115 | info_ptr->int_y_red = red_y; |
| 116 | info_ptr->int_x_green = green_x; |
| 117 | info_ptr->int_y_green = green_y; |
| 118 | info_ptr->int_x_blue = blue_x; |
| 119 | info_ptr->int_y_blue = blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 120 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 121 | info_ptr->x_white = (float)(white_x/100000.); |
| 122 | info_ptr->y_white = (float)(white_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 123 | info_ptr->x_red = (float)( red_x/100000.); |
| 124 | info_ptr->y_red = (float)( red_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 125 | info_ptr->x_green = (float)(green_x/100000.); |
| 126 | info_ptr->y_green = (float)(green_y/100000.); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 127 | info_ptr->x_blue = (float)( blue_x/100000.); |
| 128 | info_ptr->y_blue = (float)( blue_y/100000.); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 129 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 130 | info_ptr->valid |= PNG_INFO_cHRM; |
| 131 | } |
| 132 | #endif |
| 133 | #endif |
| 134 | |
| 135 | #if defined(PNG_gAMA_SUPPORTED) |
| 136 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 137 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 138 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 139 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 140 | double gamma; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 141 | png_debug1(1, "in %s storage function\n", "gAMA"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 142 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 143 | return; |
| 144 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 145 | /* Check for overflow */ |
| 146 | if (file_gamma > 21474.83) |
| 147 | { |
| 148 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
| 149 | gamma=21474.83; |
| 150 | } |
| 151 | else |
| 152 | gamma=file_gamma; |
| 153 | info_ptr->gamma = (float)gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 154 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 155 | info_ptr->int_gamma = (int)(gamma*100000.+.5); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 156 | #endif |
| 157 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 158 | if(gamma == 0.0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 159 | png_warning(png_ptr, "Setting gamma=0"); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 160 | } |
| 161 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 162 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 163 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 164 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 165 | { |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 166 | png_fixed_point gamma; |
| 167 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 168 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 169 | if (png_ptr == NULL || info_ptr == NULL) |
| 170 | return; |
| 171 | |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 172 | if (int_gamma > PNG_MAX_UINT) |
| 173 | { |
| 174 | png_warning(png_ptr, "Limiting gamma to 21474.83"); |
| 175 | gamma=PNG_MAX_UINT; |
| 176 | } |
| 177 | else |
| 178 | { |
| 179 | if (int_gamma < 0) |
| 180 | { |
| 181 | png_warning(png_ptr, "Setting negative gamma to zero"); |
| 182 | gamma=0; |
| 183 | } |
| 184 | else |
| 185 | gamma=int_gamma; |
| 186 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 187 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 188 | info_ptr->gamma = (float)(gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 189 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 190 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 191 | info_ptr->int_gamma = gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 192 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 193 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 194 | if(gamma == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 195 | png_warning(png_ptr, "Setting gamma=0"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 196 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 197 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 198 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 199 | #if defined(PNG_hIST_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 200 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 201 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 202 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 203 | int i; |
| 204 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 205 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 206 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 207 | return; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 208 | if (info_ptr->num_palette == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 209 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 210 | png_warning(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 211 | "Palette size 0, hIST allocation skipped."); |
| 212 | return; |
| 213 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 214 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 215 | #ifdef PNG_FREE_ME_SUPPORTED |
| 216 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 217 | #endif |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 218 | /* Changed from info->num_palette to 256 in version 1.2.1 */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 219 | png_ptr->hist = (png_uint_16p)png_malloc(png_ptr, |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 220 | (png_uint_32)(256 * sizeof (png_uint_16))); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 221 | |
| 222 | for (i = 0; i < info_ptr->num_palette; i++) |
| 223 | png_ptr->hist[i] = hist[i]; |
| 224 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 225 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 226 | |
| 227 | #ifdef PNG_FREE_ME_SUPPORTED |
| 228 | info_ptr->free_me |= PNG_FREE_HIST; |
| 229 | #else |
| 230 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 231 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 232 | } |
| 233 | #endif |
| 234 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 235 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 236 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 237 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 238 | int color_type, int interlace_type, int compression_type, |
| 239 | int filter_type) |
| 240 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 241 | int rowbytes_per_pixel; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 242 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 243 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 244 | return; |
| 245 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 246 | /* check for width and height valid values */ |
| 247 | if (width == 0 || height == 0) |
| 248 | png_error(png_ptr, "Image width or height is zero in IHDR"); |
| 249 | if (width > PNG_MAX_UINT || height > PNG_MAX_UINT) |
| 250 | png_error(png_ptr, "Invalid image size in IHDR"); |
| 251 | |
| 252 | /* check other values */ |
| 253 | if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && |
| 254 | bit_depth != 8 && bit_depth != 16) |
| 255 | png_error(png_ptr, "Invalid bit depth in IHDR"); |
| 256 | |
| 257 | if (color_type < 0 || color_type == 1 || |
| 258 | color_type == 5 || color_type > 6) |
| 259 | png_error(png_ptr, "Invalid color type in IHDR"); |
| 260 | |
| 261 | if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || |
| 262 | ((color_type == PNG_COLOR_TYPE_RGB || |
| 263 | color_type == PNG_COLOR_TYPE_GRAY_ALPHA || |
| 264 | color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) |
| 265 | png_error(png_ptr, "Invalid color type/bit depth combination in IHDR"); |
| 266 | |
| 267 | if (interlace_type >= PNG_INTERLACE_LAST) |
| 268 | png_error(png_ptr, "Unknown interlace method in IHDR"); |
| 269 | |
| 270 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 271 | png_error(png_ptr, "Unknown compression method in IHDR"); |
| 272 | |
| 273 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 274 | /* Accept filter_method 64 (intrapixel differencing) only if |
| 275 | * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and |
| 276 | * 2. Libpng did not read a PNG signature (this filter_method is only |
| 277 | * used in PNG datastreams that are embedded in MNG datastreams) and |
| 278 | * 3. The application called png_permit_mng_features with a mask that |
| 279 | * included PNG_FLAG_MNG_FILTER_64 and |
| 280 | * 4. The filter_method is 64 and |
| 281 | * 5. The color_type is RGB or RGBA |
| 282 | */ |
| 283 | if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted) |
| 284 | png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n"); |
| 285 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 286 | { |
| 287 | if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && |
| 288 | (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && |
| 289 | ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && |
| 290 | (color_type == PNG_COLOR_TYPE_RGB || |
| 291 | color_type == PNG_COLOR_TYPE_RGB_ALPHA))) |
| 292 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 293 | if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) |
| 294 | png_warning(png_ptr, "Invalid filter method in IHDR"); |
| 295 | } |
| 296 | #else |
| 297 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 298 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 299 | #endif |
| 300 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 301 | info_ptr->width = width; |
| 302 | info_ptr->height = height; |
| 303 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 304 | info_ptr->color_type =(png_byte) color_type; |
| 305 | info_ptr->compression_type = (png_byte)compression_type; |
| 306 | info_ptr->filter_type = (png_byte)filter_type; |
| 307 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame^] | 308 | if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 309 | info_ptr->channels = 3; |
| 310 | else |
| 311 | info_ptr->channels = 1; |
| 312 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 313 | info_ptr->channels++; |
| 314 | 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] | 315 | |
| 316 | /* check for overflow */ |
| 317 | rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 318 | if (( width > PNG_MAX_UINT/rowbytes_per_pixel)) |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 319 | { |
| 320 | png_warning(png_ptr, |
| 321 | "Width too large to process image data; rowbytes will overflow."); |
| 322 | info_ptr->rowbytes = (png_size_t)0; |
| 323 | } |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 324 | else |
| 325 | info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 326 | } |
| 327 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 328 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 329 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 330 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 331 | 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] | 332 | { |
| 333 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 334 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 335 | return; |
| 336 | |
| 337 | info_ptr->x_offset = offset_x; |
| 338 | info_ptr->y_offset = offset_y; |
| 339 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 340 | info_ptr->valid |= PNG_INFO_oFFs; |
| 341 | } |
| 342 | #endif |
| 343 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 344 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 345 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 346 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 347 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 348 | png_charp units, png_charpp params) |
| 349 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 350 | png_uint_32 length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 351 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 352 | |
| 353 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 354 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 355 | return; |
| 356 | |
| 357 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 358 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 359 | info_ptr->pcal_purpose = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 360 | png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 361 | |
| 362 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 363 | info_ptr->pcal_X0 = X0; |
| 364 | info_ptr->pcal_X1 = X1; |
| 365 | info_ptr->pcal_type = (png_byte)type; |
| 366 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 367 | |
| 368 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 369 | png_debug1(3, "allocating units for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 370 | info_ptr->pcal_units = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 371 | png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 372 | |
| 373 | info_ptr->pcal_params = (png_charpp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 374 | (png_uint_32)((nparams + 1) * sizeof(png_charp))); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 375 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 376 | info_ptr->pcal_params[nparams] = NULL; |
| 377 | |
| 378 | for (i = 0; i < nparams; i++) |
| 379 | { |
| 380 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 381 | png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 382 | info_ptr->pcal_params[i] = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 383 | 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] | 384 | } |
| 385 | |
| 386 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 387 | #ifdef PNG_FREE_ME_SUPPORTED |
| 388 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 389 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 390 | } |
| 391 | #endif |
| 392 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 393 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 394 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 395 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 396 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 397 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 398 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 399 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 400 | if (png_ptr == NULL || info_ptr == NULL) |
| 401 | return; |
| 402 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 403 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 404 | info_ptr->scal_pixel_width = width; |
| 405 | info_ptr->scal_pixel_height = height; |
| 406 | |
| 407 | info_ptr->valid |= PNG_INFO_sCAL; |
| 408 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 409 | #else |
| 410 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 411 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 412 | 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] | 413 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 414 | { |
| 415 | png_uint_32 length; |
| 416 | |
| 417 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 418 | if (png_ptr == NULL || info_ptr == NULL) |
| 419 | return; |
| 420 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 421 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 422 | |
| 423 | length = png_strlen(swidth) + 1; |
| 424 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
| 425 | info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 426 | 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] | 427 | |
| 428 | length = png_strlen(sheight) + 1; |
| 429 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 430 | info_ptr->scal_s_height = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 431 | 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] | 432 | |
| 433 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 434 | #ifdef PNG_FREE_ME_SUPPORTED |
| 435 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 436 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 437 | } |
| 438 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 439 | #endif |
| 440 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 441 | |
| 442 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 443 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 444 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 445 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 446 | { |
| 447 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 448 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 449 | return; |
| 450 | |
| 451 | info_ptr->x_pixels_per_unit = res_x; |
| 452 | info_ptr->y_pixels_per_unit = res_y; |
| 453 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 454 | info_ptr->valid |= PNG_INFO_pHYs; |
| 455 | } |
| 456 | #endif |
| 457 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 458 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 459 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 460 | png_colorp palette, int num_palette) |
| 461 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 462 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 463 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 464 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 465 | return; |
| 466 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 467 | /* |
| 468 | * It may not actually be necessary to set png_ptr->palette here; |
| 469 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 470 | * function used to do the allocation. |
| 471 | */ |
| 472 | #ifdef PNG_FREE_ME_SUPPORTED |
| 473 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 474 | #endif |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 475 | /* Changed in libpng-1.2.1 to allocate 256 instead of num_palette entries, |
| 476 | in case of an invalid PNG file that has too-large sample values. */ |
| 477 | png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)256, |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 478 | sizeof (png_color)); |
Glenn Randers-Pehrson | 9c0f094 | 2002-02-21 23:14:23 -0600 | [diff] [blame] | 479 | if (png_ptr->palette == NULL) |
| 480 | png_error(png_ptr, "Unable to malloc palette"); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 481 | png_memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color)); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 482 | info_ptr->palette = png_ptr->palette; |
| 483 | 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] | 484 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 485 | #ifdef PNG_FREE_ME_SUPPORTED |
| 486 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 487 | #else |
| 488 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 489 | #endif |
| 490 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 491 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 492 | } |
| 493 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 494 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 495 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 496 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 497 | png_color_8p sig_bit) |
| 498 | { |
| 499 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 500 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 501 | return; |
| 502 | |
| 503 | png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof (png_color_8)); |
| 504 | info_ptr->valid |= PNG_INFO_sBIT; |
| 505 | } |
| 506 | #endif |
| 507 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 508 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 509 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 510 | 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] | 511 | { |
| 512 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 513 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 514 | return; |
| 515 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 516 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 517 | info_ptr->valid |= PNG_INFO_sRGB; |
| 518 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 519 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 520 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 521 | 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] | 522 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 523 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 524 | #if defined(PNG_gAMA_SUPPORTED) |
| 525 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 526 | float file_gamma; |
| 527 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 528 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 529 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 530 | #endif |
| 531 | #endif |
| 532 | #if defined(PNG_cHRM_SUPPORTED) |
| 533 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 534 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 535 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 536 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 537 | 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] | 538 | int_green_y, int_blue_x, int_blue_y; |
| 539 | #endif |
| 540 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 541 | 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] | 542 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 543 | return; |
| 544 | |
| 545 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 546 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 547 | #if defined(PNG_gAMA_SUPPORTED) |
| 548 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 549 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 550 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 551 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 552 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 553 | int_file_gamma = 45455L; |
| 554 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 555 | #endif |
| 556 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 557 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 558 | #if defined(PNG_cHRM_SUPPORTED) |
| 559 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 560 | int_white_x = 31270L; |
| 561 | int_white_y = 32900L; |
| 562 | int_red_x = 64000L; |
| 563 | int_red_y = 33000L; |
| 564 | int_green_x = 30000L; |
| 565 | int_green_y = 60000L; |
| 566 | int_blue_x = 15000L; |
| 567 | int_blue_y = 6000L; |
| 568 | |
| 569 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 570 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 571 | int_blue_x, int_blue_y); |
| 572 | #endif |
| 573 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 574 | white_x = (float).3127; |
| 575 | white_y = (float).3290; |
| 576 | red_x = (float).64; |
| 577 | red_y = (float).33; |
| 578 | green_x = (float).30; |
| 579 | green_y = (float).60; |
| 580 | blue_x = (float).15; |
| 581 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 582 | |
| 583 | png_set_cHRM(png_ptr, info_ptr, |
| 584 | 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] | 585 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 586 | #endif |
| 587 | } |
| 588 | #endif |
| 589 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 590 | |
| 591 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 592 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 593 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 594 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 595 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 596 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 597 | png_charp new_iccp_name; |
| 598 | png_charp new_iccp_profile; |
| 599 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 600 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 601 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 602 | return; |
| 603 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 604 | new_iccp_name = (png_charp)png_malloc(png_ptr, png_strlen(name)+1); |
| 605 | png_strcpy(new_iccp_name, name); |
| 606 | new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 607 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 608 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 609 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 610 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 611 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 612 | info_ptr->iccp_name = new_iccp_name; |
| 613 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 614 | /* 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] | 615 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 616 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 617 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 618 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 619 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 620 | info_ptr->valid |= PNG_INFO_iCCP; |
| 621 | } |
| 622 | #endif |
| 623 | |
| 624 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 625 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 626 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 627 | int num_text) |
| 628 | { |
| 629 | int i; |
| 630 | |
| 631 | 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] | 632 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 633 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 634 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 635 | return; |
| 636 | |
| 637 | /* Make sure we have enough space in the "text" array in info_struct |
| 638 | * to hold all of the incoming text_ptr objects. |
| 639 | */ |
| 640 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 641 | { |
| 642 | if (info_ptr->text != NULL) |
| 643 | { |
| 644 | png_textp old_text; |
| 645 | int old_max; |
| 646 | |
| 647 | old_max = info_ptr->max_text; |
| 648 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 649 | old_text = info_ptr->text; |
| 650 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 651 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 652 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
| 653 | sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 654 | png_free(png_ptr, old_text); |
| 655 | } |
| 656 | else |
| 657 | { |
| 658 | info_ptr->max_text = num_text + 8; |
| 659 | info_ptr->num_text = 0; |
| 660 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 661 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 662 | #ifdef PNG_FREE_ME_SUPPORTED |
| 663 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 664 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 665 | } |
| 666 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 667 | info_ptr->max_text); |
| 668 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 669 | for (i = 0; i < num_text; i++) |
| 670 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 671 | png_size_t text_length,key_len; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 672 | png_size_t lang_len,lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 673 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 674 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 675 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 676 | continue; |
| 677 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 678 | key_len = png_strlen(text_ptr[i].key); |
| 679 | |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 680 | if(text_ptr[i].compression <= 0) |
| 681 | { |
| 682 | lang_len = 0; |
| 683 | lang_key_len = 0; |
| 684 | } |
| 685 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 686 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 687 | { |
| 688 | /* set iTXt data */ |
Glenn Randers-Pehrson | 73d57cb | 2002-03-25 18:49:08 -0600 | [diff] [blame^] | 689 | if (text_ptr[i].lang != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 690 | lang_len = png_strlen(text_ptr[i].lang); |
| 691 | else |
| 692 | lang_len = 0; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 693 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 694 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 695 | else |
| 696 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 697 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 698 | #else |
| 699 | { |
| 700 | png_warning(png_ptr, "iTXt chunk not supported."); |
| 701 | continue; |
| 702 | } |
| 703 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 704 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 705 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 706 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 707 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 708 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 709 | if(text_ptr[i].compression > 0) |
| 710 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 711 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 712 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 713 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 714 | } |
| 715 | else |
| 716 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 717 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 718 | textp->compression = text_ptr[i].compression; |
| 719 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 720 | |
| 721 | textp->key = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 722 | (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 8b6a889 | 2001-05-18 04:54:50 -0500 | [diff] [blame] | 723 | png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n", |
| 724 | (png_uint_32)(key_len + lang_len + lang_key_len + text_length + 4), |
| 725 | (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 726 | |
| 727 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 728 | (png_size_t)(key_len)); |
| 729 | *(textp->key+key_len) = '\0'; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 730 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 731 | if (text_ptr[i].compression > 0) |
| 732 | { |
| 733 | textp->lang=textp->key + key_len + 1; |
| 734 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
| 735 | *(textp->lang+lang_len) = '\0'; |
| 736 | textp->lang_key=textp->lang + lang_len + 1; |
| 737 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
| 738 | *(textp->lang_key+lang_key_len) = '\0'; |
| 739 | textp->text=textp->lang_key + lang_key_len + 1; |
| 740 | } |
| 741 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 742 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 743 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 744 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 745 | textp->lang=NULL; |
| 746 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 747 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 748 | textp->text=textp->key + key_len + 1; |
| 749 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 750 | if(text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 751 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 752 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 753 | *(textp->text+text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 754 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 755 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 756 | if(textp->compression > 0) |
| 757 | { |
| 758 | textp->text_length = 0; |
| 759 | textp->itxt_length = text_length; |
| 760 | } |
| 761 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 762 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 763 | { |
| 764 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 765 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 766 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 767 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 768 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 769 | info_ptr->text[info_ptr->num_text]= *textp; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 770 | info_ptr->num_text++; |
| 771 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 772 | } |
| 773 | } |
| 774 | #endif |
| 775 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 776 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 777 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 778 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 779 | { |
| 780 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 781 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 782 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 783 | return; |
| 784 | |
| 785 | png_memcpy(&(info_ptr->mod_time), mod_time, sizeof (png_time)); |
| 786 | info_ptr->valid |= PNG_INFO_tIME; |
| 787 | } |
| 788 | #endif |
| 789 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 790 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 791 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 792 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 793 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 794 | { |
| 795 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 796 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 797 | return; |
| 798 | |
| 799 | if (trans != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 800 | { |
| 801 | /* |
| 802 | * It may not actually be necessary to set png_ptr->trans here; |
| 803 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 804 | * function used to do the allocation. |
| 805 | */ |
| 806 | #ifdef PNG_FREE_ME_SUPPORTED |
| 807 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 808 | #endif |
Glenn Randers-Pehrson | db3b88d | 2001-12-04 06:30:43 -0600 | [diff] [blame] | 809 | /* Changed from num_trans to 256 in version 1.2.1 */ |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 810 | 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] | 811 | (png_uint_32)256); |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 812 | png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 813 | #ifdef PNG_FREE_ME_SUPPORTED |
| 814 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 815 | #else |
| 816 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 817 | #endif |
| 818 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 819 | |
| 820 | if (trans_values != NULL) |
| 821 | { |
| 822 | png_memcpy(&(info_ptr->trans_values), trans_values, |
| 823 | sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 824 | if (num_trans == 0) |
| 825 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 826 | } |
| 827 | info_ptr->num_trans = (png_uint_16)num_trans; |
| 828 | info_ptr->valid |= PNG_INFO_tRNS; |
| 829 | } |
| 830 | #endif |
| 831 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 832 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 833 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 834 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 835 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 836 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 837 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 838 | int i; |
| 839 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 840 | np = (png_sPLT_tp)png_malloc(png_ptr, |
| 841 | (info_ptr->splt_palettes_num + nentries) * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 842 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 843 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 844 | info_ptr->splt_palettes_num * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 845 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 846 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 847 | |
| 848 | for (i = 0; i < nentries; i++) |
| 849 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 850 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 851 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 852 | |
| 853 | to->name = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 854 | png_strlen(from->name) + 1); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 855 | png_strcpy(to->name, from->name); |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 856 | to->entries = (png_sPLT_entryp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 857 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 858 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 859 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 860 | to->nentries = from->nentries; |
| 861 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | info_ptr->splt_palettes = np; |
| 865 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 866 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 867 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 868 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 869 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 870 | } |
| 871 | #endif /* PNG_sPLT_SUPPORTED */ |
| 872 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 873 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 874 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 875 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 876 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 877 | { |
| 878 | png_unknown_chunkp np; |
| 879 | int i; |
| 880 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 881 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 882 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 883 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 884 | np = (png_unknown_chunkp)png_malloc(png_ptr, |
| 885 | (info_ptr->unknown_chunks_num + num_unknowns) * |
| 886 | sizeof(png_unknown_chunk)); |
| 887 | |
| 888 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 889 | info_ptr->unknown_chunks_num * sizeof(png_unknown_chunk)); |
| 890 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 891 | info_ptr->unknown_chunks=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 892 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 893 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 894 | { |
| 895 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 896 | png_unknown_chunkp from = unknowns + i; |
| 897 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 898 | png_strcpy((png_charp)to->name, (png_charp)from->name); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 899 | to->data = (png_bytep)png_malloc(png_ptr, from->size); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 900 | png_memcpy(to->data, from->data, from->size); |
| 901 | to->size = from->size; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 902 | |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 903 | /* note our location in the read or write sequence */ |
| 904 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 908 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 909 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 910 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 911 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 912 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 913 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 914 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 915 | int chunk, int location) |
| 916 | { |
Glenn Randers-Pehrson | d56aca7 | 2000-11-23 11:51:42 -0600 | [diff] [blame] | 917 | if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 918 | (int)info_ptr->unknown_chunks_num) |
| 919 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 920 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 921 | #endif |
| 922 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 923 | #if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ |
| 924 | defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 925 | void PNGAPI |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 926 | png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) |
| 927 | { |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 928 | /* This function is deprecated in favor of png_permit_mng_features() |
| 929 | and will be removed from libpng-2.0.0 */ |
| 930 | png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 931 | if (png_ptr == NULL) |
| 932 | return; |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 933 | png_ptr->mng_features_permitted = (png_byte) |
| 934 | ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) | |
| 935 | ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); |
| 936 | } |
| 937 | #endif |
| 938 | |
| 939 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 940 | png_uint_32 PNGAPI |
| 941 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 942 | { |
| 943 | png_debug(1, "in png_permit_mng_features\n"); |
| 944 | if (png_ptr == NULL) |
| 945 | return (png_uint_32)0; |
| 946 | png_ptr->mng_features_permitted = |
| 947 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 948 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 949 | } |
| 950 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 951 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 952 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 953 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 954 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 955 | chunk_list, int num_chunks) |
| 956 | { |
| 957 | png_bytep new_list, p; |
| 958 | int i, old_num_chunks; |
| 959 | if (num_chunks == 0) |
| 960 | { |
| 961 | if(keep == HANDLE_CHUNK_ALWAYS || keep == HANDLE_CHUNK_IF_SAFE) |
| 962 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 963 | else |
| 964 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 965 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 966 | if(keep == HANDLE_CHUNK_ALWAYS) |
| 967 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 968 | else |
| 969 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 970 | return; |
| 971 | } |
| 972 | if (chunk_list == NULL) |
| 973 | return; |
| 974 | old_num_chunks=png_ptr->num_chunk_list; |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 975 | new_list=(png_bytep)png_malloc(png_ptr, |
| 976 | (png_uint_32)(5*(num_chunks+old_num_chunks))); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 977 | if(png_ptr->chunk_list != NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 978 | { |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 979 | png_memcpy(new_list, png_ptr->chunk_list, |
| 980 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 981 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 982 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 983 | } |
Glenn Randers-Pehrson | b182893 | 2001-06-23 08:03:17 -0500 | [diff] [blame] | 984 | png_memcpy(new_list+5*old_num_chunks, chunk_list, |
| 985 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 986 | for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5) |
| 987 | *p=(png_byte)keep; |
| 988 | png_ptr->num_chunk_list=old_num_chunks+num_chunks; |
| 989 | png_ptr->chunk_list=new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 990 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 991 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 992 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 993 | } |
| 994 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 995 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 996 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 997 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 998 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 999 | png_user_chunk_ptr read_user_chunk_fn) |
| 1000 | { |
| 1001 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
| 1002 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1003 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1004 | } |
| 1005 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1006 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1007 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1008 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1009 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1010 | { |
| 1011 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1012 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1013 | if (png_ptr == NULL || info_ptr == NULL) |
| 1014 | return; |
| 1015 | |
Glenn Randers-Pehrson | ec61c23 | 2000-05-16 06:17:36 -0500 | [diff] [blame] | 1016 | if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1017 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1018 | info_ptr->row_pointers = row_pointers; |
| 1019 | if(row_pointers) |
| 1020 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1021 | } |
| 1022 | #endif |
| 1023 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1024 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1025 | png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size) |
| 1026 | { |
| 1027 | if(png_ptr->zbuf) |
| 1028 | png_free(png_ptr, png_ptr->zbuf); |
| 1029 | png_ptr->zbuf_size = (png_size_t)size; |
| 1030 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
| 1031 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 1032 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 1033 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1034 | |
| 1035 | void PNGAPI |
| 1036 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 1037 | { |
| 1038 | if (png_ptr && info_ptr) |
| 1039 | info_ptr->valid &= ~(mask); |
| 1040 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1041 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1042 | |
Glenn Randers-Pehrson | 377657d | 2002-03-08 01:31:27 -0600 | [diff] [blame] | 1043 | #ifndef PNG_1_0_X |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1044 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1045 | /* this function was added to libpng 1.2.0 and should always exist by default */ |
| 1046 | void PNGAPI |
| 1047 | png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) |
| 1048 | { |
| 1049 | png_uint_32 settable_asm_flags; |
| 1050 | png_uint_32 settable_mmx_flags; |
| 1051 | |
| 1052 | settable_mmx_flags = |
| 1053 | #ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW |
| 1054 | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW | |
| 1055 | #endif |
| 1056 | #ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE |
| 1057 | PNG_ASM_FLAG_MMX_READ_INTERLACE | |
| 1058 | #endif |
| 1059 | #ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW |
| 1060 | PNG_ASM_FLAG_MMX_READ_FILTER_SUB | |
| 1061 | PNG_ASM_FLAG_MMX_READ_FILTER_UP | |
| 1062 | PNG_ASM_FLAG_MMX_READ_FILTER_AVG | |
| 1063 | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH | |
| 1064 | #endif |
| 1065 | 0; |
| 1066 | |
| 1067 | /* could be some non-MMX ones in the future, but not currently: */ |
| 1068 | settable_asm_flags = settable_mmx_flags; |
| 1069 | |
| 1070 | if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) || |
| 1071 | !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)) |
| 1072 | { |
| 1073 | /* clear all MMX flags if MMX isn't supported */ |
| 1074 | settable_asm_flags &= ~settable_mmx_flags; |
| 1075 | png_ptr->asm_flags &= ~settable_mmx_flags; |
| 1076 | } |
| 1077 | |
| 1078 | /* we're replacing the settable bits with those passed in by the user, |
| 1079 | * so first zero them out of the master copy, then logical-OR in the |
| 1080 | * allowed subset that was requested */ |
| 1081 | |
| 1082 | png_ptr->asm_flags &= ~settable_asm_flags; /* zero them */ |
| 1083 | png_ptr->asm_flags |= (asm_flags & settable_asm_flags); /* set them */ |
| 1084 | } |
| 1085 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
| 1086 | |
| 1087 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1088 | /* this function was added to libpng 1.2.0 */ |
| 1089 | void PNGAPI |
| 1090 | png_set_mmx_thresholds (png_structp png_ptr, |
| 1091 | png_byte mmx_bitdepth_threshold, |
| 1092 | png_uint_32 mmx_rowbytes_threshold) |
| 1093 | { |
| 1094 | png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold; |
| 1095 | png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold; |
| 1096 | } |
| 1097 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
Glenn Randers-Pehrson | 377657d | 2002-03-08 01:31:27 -0600 | [diff] [blame] | 1098 | #endif /* ?PNG_1_0_X */ |