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 | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 4 | * libpng 1.2.0beta2 - May 7, 2001 |
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 | be9de0f | 2001-01-22 08:52:16 -0600 | [diff] [blame] | 6 | * Copyright (c) 1998-2001 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 | |
| 43 | info_ptr->x_white = (float)white_x; |
| 44 | info_ptr->y_white = (float)white_y; |
| 45 | info_ptr->x_red = (float)red_x; |
| 46 | info_ptr->y_red = (float)red_y; |
| 47 | info_ptr->x_green = (float)green_x; |
| 48 | info_ptr->y_green = (float)green_y; |
| 49 | info_ptr->x_blue = (float)blue_x; |
| 50 | info_ptr->y_blue = (float)blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 51 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 52 | info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); |
| 53 | info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5); |
| 54 | info_ptr->int_x_red = (png_fixed_point)(red_x*100000.+0.5); |
| 55 | info_ptr->int_y_red = (png_fixed_point)(red_y*100000.+0.5); |
| 56 | info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); |
| 57 | info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5); |
| 58 | info_ptr->int_x_blue = (png_fixed_point)(blue_x*100000.+0.5); |
| 59 | info_ptr->int_y_blue = (png_fixed_point)(blue_y*100000.+0.5); |
| 60 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 61 | info_ptr->valid |= PNG_INFO_cHRM; |
| 62 | } |
| 63 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 64 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 65 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 66 | 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] | 67 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, |
| 68 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, |
| 69 | png_fixed_point blue_x, png_fixed_point blue_y) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 70 | { |
| 71 | png_debug1(1, "in %s storage function\n", "cHRM"); |
| 72 | if (png_ptr == NULL || info_ptr == NULL) |
| 73 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 74 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 75 | info_ptr->int_x_white = white_x; |
| 76 | info_ptr->int_y_white = white_y; |
| 77 | info_ptr->int_x_red = red_x; |
| 78 | info_ptr->int_y_red = red_y; |
| 79 | info_ptr->int_x_green = green_x; |
| 80 | info_ptr->int_y_green = green_y; |
| 81 | info_ptr->int_x_blue = blue_x; |
| 82 | info_ptr->int_y_blue = blue_y; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 83 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 84 | info_ptr->x_white = (float)(white_x/100000.); |
| 85 | info_ptr->y_white = (float)(white_y/100000.); |
| 86 | info_ptr->x_red = (float)(red_x/100000.); |
| 87 | info_ptr->y_red = (float)(red_y/100000.); |
| 88 | info_ptr->x_green = (float)(green_x/100000.); |
| 89 | info_ptr->y_green = (float)(green_y/100000.); |
| 90 | info_ptr->x_blue = (float)(blue_x/100000.); |
| 91 | info_ptr->y_blue = (float)(blue_y/100000.); |
| 92 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 93 | info_ptr->valid |= PNG_INFO_cHRM; |
| 94 | } |
| 95 | #endif |
| 96 | #endif |
| 97 | |
| 98 | #if defined(PNG_gAMA_SUPPORTED) |
| 99 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 100 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 101 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 102 | { |
| 103 | png_debug1(1, "in %s storage function\n", "gAMA"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 104 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 105 | return; |
| 106 | |
| 107 | info_ptr->gamma = (float)file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 108 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 109 | info_ptr->int_gamma = (int)(file_gamma*100000.+.5); |
| 110 | #endif |
| 111 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 112 | if(file_gamma == 0.0) |
| 113 | png_warning(png_ptr, "Setting gamma=0"); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 114 | } |
| 115 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 116 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 117 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 118 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 119 | { |
| 120 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 121 | if (png_ptr == NULL || info_ptr == NULL) |
| 122 | return; |
| 123 | |
| 124 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 125 | info_ptr->gamma = (float)(int_gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 126 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 127 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 128 | info_ptr->int_gamma = int_gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 129 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 130 | info_ptr->valid |= PNG_INFO_gAMA; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 131 | if(int_gamma == 0) |
| 132 | png_warning(png_ptr, "Setting gamma=0"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 133 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 134 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 135 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 136 | #if defined(PNG_hIST_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_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 139 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 140 | int i; |
| 141 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 142 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 143 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 144 | return; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 145 | if (info_ptr->num_palette == 0) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 146 | { |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 147 | png_warning(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 148 | "Palette size 0, hIST allocation skipped."); |
| 149 | return; |
| 150 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 151 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 152 | #ifdef PNG_FREE_ME_SUPPORTED |
| 153 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 154 | #endif |
| 155 | png_ptr->hist = (png_uint_16p)png_malloc(png_ptr, |
| 156 | (png_uint_32)(info_ptr->num_palette * sizeof (png_uint_16))); |
| 157 | |
| 158 | for (i = 0; i < info_ptr->num_palette; i++) |
| 159 | png_ptr->hist[i] = hist[i]; |
| 160 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 161 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 162 | |
| 163 | #ifdef PNG_FREE_ME_SUPPORTED |
| 164 | info_ptr->free_me |= PNG_FREE_HIST; |
| 165 | #else |
| 166 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 167 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 168 | } |
| 169 | #endif |
| 170 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 171 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 172 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 173 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 174 | int color_type, int interlace_type, int compression_type, |
| 175 | int filter_type) |
| 176 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 177 | int rowbytes_per_pixel; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 178 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 179 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 180 | return; |
| 181 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 182 | /* check for width and height valid values */ |
| 183 | if (width == 0 || height == 0) |
| 184 | png_error(png_ptr, "Image width or height is zero in IHDR"); |
| 185 | if (width > PNG_MAX_UINT || height > PNG_MAX_UINT) |
| 186 | png_error(png_ptr, "Invalid image size in IHDR"); |
| 187 | |
| 188 | /* check other values */ |
| 189 | if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && |
| 190 | bit_depth != 8 && bit_depth != 16) |
| 191 | png_error(png_ptr, "Invalid bit depth in IHDR"); |
| 192 | |
| 193 | if (color_type < 0 || color_type == 1 || |
| 194 | color_type == 5 || color_type > 6) |
| 195 | png_error(png_ptr, "Invalid color type in IHDR"); |
| 196 | |
| 197 | if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || |
| 198 | ((color_type == PNG_COLOR_TYPE_RGB || |
| 199 | color_type == PNG_COLOR_TYPE_GRAY_ALPHA || |
| 200 | color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) |
| 201 | png_error(png_ptr, "Invalid color type/bit depth combination in IHDR"); |
| 202 | |
| 203 | if (interlace_type >= PNG_INTERLACE_LAST) |
| 204 | png_error(png_ptr, "Unknown interlace method in IHDR"); |
| 205 | |
| 206 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 207 | png_error(png_ptr, "Unknown compression method in IHDR"); |
| 208 | |
| 209 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 210 | /* Accept filter_method 64 (intrapixel differencing) only if |
| 211 | * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and |
| 212 | * 2. Libpng did not read a PNG signature (this filter_method is only |
| 213 | * used in PNG datastreams that are embedded in MNG datastreams) and |
| 214 | * 3. The application called png_permit_mng_features with a mask that |
| 215 | * included PNG_FLAG_MNG_FILTER_64 and |
| 216 | * 4. The filter_method is 64 and |
| 217 | * 5. The color_type is RGB or RGBA |
| 218 | */ |
| 219 | if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted) |
| 220 | png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n"); |
| 221 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 222 | { |
| 223 | if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && |
| 224 | (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && |
| 225 | ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && |
| 226 | (color_type == PNG_COLOR_TYPE_RGB || |
| 227 | color_type == PNG_COLOR_TYPE_RGB_ALPHA))) |
| 228 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 229 | if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) |
| 230 | png_warning(png_ptr, "Invalid filter method in IHDR"); |
| 231 | } |
| 232 | #else |
| 233 | if(filter_type != PNG_FILTER_TYPE_BASE) |
| 234 | png_error(png_ptr, "Unknown filter method in IHDR"); |
| 235 | #endif |
| 236 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 237 | info_ptr->width = width; |
| 238 | info_ptr->height = height; |
| 239 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 240 | info_ptr->color_type =(png_byte) color_type; |
| 241 | info_ptr->compression_type = (png_byte)compression_type; |
| 242 | info_ptr->filter_type = (png_byte)filter_type; |
| 243 | info_ptr->interlace_type = (png_byte)interlace_type; |
| 244 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 245 | info_ptr->channels = 1; |
| 246 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
| 247 | info_ptr->channels = 3; |
| 248 | else |
| 249 | info_ptr->channels = 1; |
| 250 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 251 | info_ptr->channels++; |
| 252 | 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] | 253 | |
| 254 | /* check for overflow */ |
| 255 | rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 256 | if (( width > PNG_MAX_UINT/rowbytes_per_pixel)) |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 257 | { |
| 258 | png_warning(png_ptr, |
| 259 | "Width too large to process image data; rowbytes will overflow."); |
| 260 | info_ptr->rowbytes = (png_size_t)0; |
| 261 | } |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 262 | else |
| 263 | info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 264 | } |
| 265 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 266 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 267 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 268 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 269 | 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] | 270 | { |
| 271 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 272 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 273 | return; |
| 274 | |
| 275 | info_ptr->x_offset = offset_x; |
| 276 | info_ptr->y_offset = offset_y; |
| 277 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 278 | info_ptr->valid |= PNG_INFO_oFFs; |
| 279 | } |
| 280 | #endif |
| 281 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 282 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 283 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 284 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 285 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 286 | png_charp units, png_charpp params) |
| 287 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 288 | png_uint_32 length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 289 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 290 | |
| 291 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 292 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 293 | return; |
| 294 | |
| 295 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 296 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 297 | info_ptr->pcal_purpose = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 298 | png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 299 | |
| 300 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 301 | info_ptr->pcal_X0 = X0; |
| 302 | info_ptr->pcal_X1 = X1; |
| 303 | info_ptr->pcal_type = (png_byte)type; |
| 304 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 305 | |
| 306 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 307 | png_debug1(3, "allocating units for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 308 | info_ptr->pcal_units = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 309 | png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 310 | |
| 311 | info_ptr->pcal_params = (png_charpp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 312 | (png_uint_32)((nparams + 1) * sizeof(png_charp))); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 313 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 314 | info_ptr->pcal_params[nparams] = NULL; |
| 315 | |
| 316 | for (i = 0; i < nparams; i++) |
| 317 | { |
| 318 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 319 | 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] | 320 | 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] | 321 | 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] | 322 | } |
| 323 | |
| 324 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 325 | #ifdef PNG_FREE_ME_SUPPORTED |
| 326 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 327 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 328 | } |
| 329 | #endif |
| 330 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 331 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 332 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 333 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 334 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 335 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 336 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 337 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 338 | if (png_ptr == NULL || info_ptr == NULL) |
| 339 | return; |
| 340 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 341 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 342 | info_ptr->scal_pixel_width = width; |
| 343 | info_ptr->scal_pixel_height = height; |
| 344 | |
| 345 | info_ptr->valid |= PNG_INFO_sCAL; |
| 346 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 347 | #else |
| 348 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 349 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 350 | 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] | 351 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 352 | { |
| 353 | png_uint_32 length; |
| 354 | |
| 355 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 356 | if (png_ptr == NULL || info_ptr == NULL) |
| 357 | return; |
| 358 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 359 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 360 | |
| 361 | length = png_strlen(swidth) + 1; |
| 362 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
| 363 | 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] | 364 | 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] | 365 | |
| 366 | length = png_strlen(sheight) + 1; |
| 367 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 368 | 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] | 369 | 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] | 370 | |
| 371 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 372 | #ifdef PNG_FREE_ME_SUPPORTED |
| 373 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 374 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 375 | } |
| 376 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 377 | #endif |
| 378 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 379 | |
| 380 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 381 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 382 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 383 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 384 | { |
| 385 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 386 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 387 | return; |
| 388 | |
| 389 | info_ptr->x_pixels_per_unit = res_x; |
| 390 | info_ptr->y_pixels_per_unit = res_y; |
| 391 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 392 | info_ptr->valid |= PNG_INFO_pHYs; |
| 393 | } |
| 394 | #endif |
| 395 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 396 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 397 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 398 | png_colorp palette, int num_palette) |
| 399 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 400 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 401 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 402 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 403 | return; |
| 404 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 405 | /* |
| 406 | * It may not actually be necessary to set png_ptr->palette here; |
| 407 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 408 | * function used to do the allocation. |
| 409 | */ |
| 410 | #ifdef PNG_FREE_ME_SUPPORTED |
| 411 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 412 | #endif |
| 413 | png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette, |
| 414 | sizeof (png_color)); |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 415 | png_memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color)); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 416 | info_ptr->palette = png_ptr->palette; |
| 417 | 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] | 418 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 419 | #ifdef PNG_FREE_ME_SUPPORTED |
| 420 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 421 | #else |
| 422 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 423 | #endif |
| 424 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 425 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 426 | } |
| 427 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 428 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 429 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 430 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 431 | png_color_8p sig_bit) |
| 432 | { |
| 433 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 434 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 435 | return; |
| 436 | |
| 437 | png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof (png_color_8)); |
| 438 | info_ptr->valid |= PNG_INFO_sBIT; |
| 439 | } |
| 440 | #endif |
| 441 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 442 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 443 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 444 | 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] | 445 | { |
| 446 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 447 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 448 | return; |
| 449 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 450 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 451 | info_ptr->valid |= PNG_INFO_sRGB; |
| 452 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 453 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 454 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 455 | 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] | 456 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 457 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 458 | #if defined(PNG_gAMA_SUPPORTED) |
| 459 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 460 | float file_gamma; |
| 461 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 462 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 463 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 464 | #endif |
| 465 | #endif |
| 466 | #if defined(PNG_cHRM_SUPPORTED) |
| 467 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 468 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 469 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 470 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 471 | 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] | 472 | int_green_y, int_blue_x, int_blue_y; |
| 473 | #endif |
| 474 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 475 | 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] | 476 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 477 | return; |
| 478 | |
| 479 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 480 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 481 | #if defined(PNG_gAMA_SUPPORTED) |
| 482 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 483 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 484 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 485 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 486 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 487 | int_file_gamma = 45455L; |
| 488 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 489 | #endif |
| 490 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 491 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 492 | #if defined(PNG_cHRM_SUPPORTED) |
| 493 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 494 | int_white_x = 31270L; |
| 495 | int_white_y = 32900L; |
| 496 | int_red_x = 64000L; |
| 497 | int_red_y = 33000L; |
| 498 | int_green_x = 30000L; |
| 499 | int_green_y = 60000L; |
| 500 | int_blue_x = 15000L; |
| 501 | int_blue_y = 6000L; |
| 502 | |
| 503 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 504 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 505 | int_blue_x, int_blue_y); |
| 506 | #endif |
| 507 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 508 | white_x = (float).3127; |
| 509 | white_y = (float).3290; |
| 510 | red_x = (float).64; |
| 511 | red_y = (float).33; |
| 512 | green_x = (float).30; |
| 513 | green_y = (float).60; |
| 514 | blue_x = (float).15; |
| 515 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 516 | |
| 517 | png_set_cHRM(png_ptr, info_ptr, |
| 518 | 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] | 519 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 520 | #endif |
| 521 | } |
| 522 | #endif |
| 523 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 524 | |
| 525 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 526 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 527 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 528 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 529 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 530 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 531 | png_charp new_iccp_name; |
| 532 | png_charp new_iccp_profile; |
| 533 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 534 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 535 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 536 | return; |
| 537 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 538 | new_iccp_name = (png_charp)png_malloc(png_ptr, png_strlen(name)+1); |
| 539 | png_strcpy(new_iccp_name, name); |
| 540 | new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 541 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 542 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 543 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 544 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 545 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 546 | info_ptr->iccp_name = new_iccp_name; |
| 547 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 548 | /* 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] | 549 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 550 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 551 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 552 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 553 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 554 | info_ptr->valid |= PNG_INFO_iCCP; |
| 555 | } |
| 556 | #endif |
| 557 | |
| 558 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 559 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 560 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 561 | int num_text) |
| 562 | { |
| 563 | int i; |
| 564 | |
| 565 | 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] | 566 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 567 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 568 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 569 | return; |
| 570 | |
| 571 | /* Make sure we have enough space in the "text" array in info_struct |
| 572 | * to hold all of the incoming text_ptr objects. |
| 573 | */ |
| 574 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 575 | { |
| 576 | if (info_ptr->text != NULL) |
| 577 | { |
| 578 | png_textp old_text; |
| 579 | int old_max; |
| 580 | |
| 581 | old_max = info_ptr->max_text; |
| 582 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 583 | old_text = info_ptr->text; |
| 584 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 585 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 586 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
| 587 | sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 588 | png_free(png_ptr, old_text); |
| 589 | } |
| 590 | else |
| 591 | { |
| 592 | info_ptr->max_text = num_text + 8; |
| 593 | info_ptr->num_text = 0; |
| 594 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 595 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 596 | #ifdef PNG_FREE_ME_SUPPORTED |
| 597 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 598 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 599 | } |
| 600 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 601 | info_ptr->max_text); |
| 602 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 603 | for (i = 0; i < num_text; i++) |
| 604 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 605 | png_size_t text_length,key_len; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 606 | png_size_t lang_len,lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 607 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 608 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 609 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 610 | continue; |
| 611 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 612 | key_len = png_strlen(text_ptr[i].key); |
| 613 | |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 614 | if(text_ptr[i].compression <= 0) |
| 615 | { |
| 616 | lang_len = 0; |
| 617 | lang_key_len = 0; |
| 618 | } |
| 619 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 620 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 621 | { |
| 622 | /* set iTXt data */ |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 623 | if (text_ptr[i].key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 624 | lang_len = png_strlen(text_ptr[i].lang); |
| 625 | else |
| 626 | lang_len = 0; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 627 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 628 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 629 | else |
| 630 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 631 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 632 | #else |
| 633 | { |
| 634 | png_warning(png_ptr, "iTXt chunk not supported."); |
| 635 | continue; |
| 636 | } |
| 637 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 638 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 639 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 640 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 641 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 642 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 643 | if(text_ptr[i].compression > 0) |
| 644 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 645 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 646 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 647 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 648 | } |
| 649 | else |
| 650 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 651 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 652 | textp->compression = text_ptr[i].compression; |
| 653 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 654 | |
| 655 | textp->key = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 656 | (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 1fd5fb3 | 2001-05-06 05:34:26 -0500 | [diff] [blame] | 657 | png_debug2(2, "Allocated %d bytes at %x in png_set_text\n", |
| 658 | key_len + lang_len + lang_key_len + text_length + 4, (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 659 | |
| 660 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 661 | (png_size_t)(key_len)); |
| 662 | *(textp->key+key_len) = '\0'; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 663 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 664 | if (text_ptr[i].compression > 0) |
| 665 | { |
| 666 | textp->lang=textp->key + key_len + 1; |
| 667 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
| 668 | *(textp->lang+lang_len) = '\0'; |
| 669 | textp->lang_key=textp->lang + lang_len + 1; |
| 670 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
| 671 | *(textp->lang_key+lang_key_len) = '\0'; |
| 672 | textp->text=textp->lang_key + lang_key_len + 1; |
| 673 | } |
| 674 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 675 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 676 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 677 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 678 | textp->lang=(png_charp)NULL; |
| 679 | textp->lang_key=(png_charp)NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 680 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 681 | textp->text=textp->key + key_len + 1; |
| 682 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 683 | if(text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 684 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 685 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 686 | *(textp->text+text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 687 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 688 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 689 | if(textp->compression > 0) |
| 690 | { |
| 691 | textp->text_length = 0; |
| 692 | textp->itxt_length = text_length; |
| 693 | } |
| 694 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 695 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 696 | { |
| 697 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 698 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 699 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 700 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 701 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 702 | info_ptr->text[info_ptr->num_text]= *textp; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 703 | info_ptr->num_text++; |
| 704 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 705 | } |
| 706 | } |
| 707 | #endif |
| 708 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 709 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 710 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 711 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 712 | { |
| 713 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 714 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 715 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 716 | return; |
| 717 | |
| 718 | png_memcpy(&(info_ptr->mod_time), mod_time, sizeof (png_time)); |
| 719 | info_ptr->valid |= PNG_INFO_tIME; |
| 720 | } |
| 721 | #endif |
| 722 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 723 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 724 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 725 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 726 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 727 | { |
| 728 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 729 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 730 | return; |
| 731 | |
| 732 | if (trans != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 733 | { |
| 734 | /* |
| 735 | * It may not actually be necessary to set png_ptr->trans here; |
| 736 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 737 | * function used to do the allocation. |
| 738 | */ |
| 739 | #ifdef PNG_FREE_ME_SUPPORTED |
| 740 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 741 | #endif |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 742 | png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, |
| 743 | num_trans); |
| 744 | png_memcpy(info_ptr->trans, trans, num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 745 | #ifdef PNG_FREE_ME_SUPPORTED |
| 746 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 747 | #else |
| 748 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 749 | #endif |
| 750 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 751 | |
| 752 | if (trans_values != NULL) |
| 753 | { |
| 754 | png_memcpy(&(info_ptr->trans_values), trans_values, |
| 755 | sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 756 | if (num_trans == 0) |
| 757 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 758 | } |
| 759 | info_ptr->num_trans = (png_uint_16)num_trans; |
| 760 | info_ptr->valid |= PNG_INFO_tRNS; |
| 761 | } |
| 762 | #endif |
| 763 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 764 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 765 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 766 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 767 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 768 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 769 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 770 | int i; |
| 771 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 772 | np = (png_sPLT_tp)png_malloc(png_ptr, |
| 773 | (info_ptr->splt_palettes_num + nentries) * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 774 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 775 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 776 | info_ptr->splt_palettes_num * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 777 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 778 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 779 | |
| 780 | for (i = 0; i < nentries; i++) |
| 781 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 782 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 783 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 784 | |
| 785 | to->name = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 786 | png_strlen(from->name) + 1); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 787 | png_strcpy(to->name, from->name); |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 788 | to->entries = (png_sPLT_entryp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 789 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 790 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 791 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 792 | to->nentries = from->nentries; |
| 793 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | info_ptr->splt_palettes = np; |
| 797 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 798 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 799 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 800 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 801 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 802 | } |
| 803 | #endif /* PNG_sPLT_SUPPORTED */ |
| 804 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 805 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 806 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 807 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 808 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 809 | { |
| 810 | png_unknown_chunkp np; |
| 811 | int i; |
| 812 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 813 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 814 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 815 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 816 | np = (png_unknown_chunkp)png_malloc(png_ptr, |
| 817 | (info_ptr->unknown_chunks_num + num_unknowns) * |
| 818 | sizeof(png_unknown_chunk)); |
| 819 | |
| 820 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 821 | info_ptr->unknown_chunks_num * sizeof(png_unknown_chunk)); |
| 822 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 823 | info_ptr->unknown_chunks=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 824 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 825 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 826 | { |
| 827 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 828 | png_unknown_chunkp from = unknowns + i; |
| 829 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 830 | png_strcpy((png_charp)to->name, (png_charp)from->name); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 831 | to->data = (png_bytep)png_malloc(png_ptr, from->size); |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 832 | png_memcpy(to->data, from->data, from->size); |
| 833 | to->size = from->size; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 834 | |
Glenn Randers-Pehrson | 82ae383 | 2001-04-20 10:32:10 -0500 | [diff] [blame] | 835 | /* note our location in the read or write sequence */ |
| 836 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 840 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 841 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 842 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 843 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 844 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 845 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 846 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 847 | int chunk, int location) |
| 848 | { |
Glenn Randers-Pehrson | d56aca7 | 2000-11-23 11:51:42 -0600 | [diff] [blame] | 849 | if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 850 | (int)info_ptr->unknown_chunks_num) |
| 851 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 852 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 853 | #endif |
| 854 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 855 | #if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ |
| 856 | defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 857 | void PNGAPI |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 858 | png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) |
| 859 | { |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 860 | /* This function is deprecated in favor of png_permit_mng_features() |
| 861 | and will be removed from libpng-2.0.0 */ |
| 862 | png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 863 | if (png_ptr == NULL) |
| 864 | return; |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 865 | png_ptr->mng_features_permitted = (png_byte) |
| 866 | ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) | |
| 867 | ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); |
| 868 | } |
| 869 | #endif |
| 870 | |
| 871 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 872 | png_uint_32 PNGAPI |
| 873 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 874 | { |
| 875 | png_debug(1, "in png_permit_mng_features\n"); |
| 876 | if (png_ptr == NULL) |
| 877 | return (png_uint_32)0; |
| 878 | png_ptr->mng_features_permitted = |
| 879 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 880 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 881 | } |
| 882 | #endif |
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 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 885 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 886 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 887 | chunk_list, int num_chunks) |
| 888 | { |
| 889 | png_bytep new_list, p; |
| 890 | int i, old_num_chunks; |
| 891 | if (num_chunks == 0) |
| 892 | { |
| 893 | if(keep == HANDLE_CHUNK_ALWAYS || keep == HANDLE_CHUNK_IF_SAFE) |
| 894 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 895 | else |
| 896 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 897 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 898 | if(keep == HANDLE_CHUNK_ALWAYS) |
| 899 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 900 | else |
| 901 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 902 | return; |
| 903 | } |
| 904 | if (chunk_list == NULL) |
| 905 | return; |
| 906 | old_num_chunks=png_ptr->num_chunk_list; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame^] | 907 | new_list=(png_bytep)png_malloc(png_ptr,5*(num_chunks+old_num_chunks)); |
| 908 | if(png_ptr->chunk_list != NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 909 | { |
| 910 | png_memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks); |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 911 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 912 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 913 | } |
| 914 | png_memcpy(new_list+5*old_num_chunks, chunk_list, 5*num_chunks); |
| 915 | for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5) |
| 916 | *p=(png_byte)keep; |
| 917 | png_ptr->num_chunk_list=old_num_chunks+num_chunks; |
| 918 | png_ptr->chunk_list=new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 919 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 920 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 921 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 922 | } |
| 923 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 924 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 925 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 926 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 927 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 928 | png_user_chunk_ptr read_user_chunk_fn) |
| 929 | { |
| 930 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
| 931 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 932 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 933 | } |
| 934 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 935 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 936 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 937 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 938 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 939 | { |
| 940 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 941 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 942 | if (png_ptr == NULL || info_ptr == NULL) |
| 943 | return; |
| 944 | |
Glenn Randers-Pehrson | ec61c23 | 2000-05-16 06:17:36 -0500 | [diff] [blame] | 945 | if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 946 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 947 | info_ptr->row_pointers = row_pointers; |
| 948 | if(row_pointers) |
| 949 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 950 | } |
| 951 | #endif |
| 952 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 953 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 954 | png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size) |
| 955 | { |
| 956 | if(png_ptr->zbuf) |
| 957 | png_free(png_ptr, png_ptr->zbuf); |
| 958 | png_ptr->zbuf_size = (png_size_t)size; |
| 959 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
| 960 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 961 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 962 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 963 | |
| 964 | void PNGAPI |
| 965 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 966 | { |
| 967 | if (png_ptr && info_ptr) |
| 968 | info_ptr->valid &= ~(mask); |
| 969 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 970 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 971 | |
| 972 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 973 | /* this function was added to libpng 1.2.0 and should always exist by default */ |
| 974 | void PNGAPI |
| 975 | png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) |
| 976 | { |
| 977 | png_uint_32 settable_asm_flags; |
| 978 | png_uint_32 settable_mmx_flags; |
| 979 | |
| 980 | settable_mmx_flags = |
| 981 | #ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW |
| 982 | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW | |
| 983 | #endif |
| 984 | #ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE |
| 985 | PNG_ASM_FLAG_MMX_READ_INTERLACE | |
| 986 | #endif |
| 987 | #ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW |
| 988 | PNG_ASM_FLAG_MMX_READ_FILTER_SUB | |
| 989 | PNG_ASM_FLAG_MMX_READ_FILTER_UP | |
| 990 | PNG_ASM_FLAG_MMX_READ_FILTER_AVG | |
| 991 | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH | |
| 992 | #endif |
| 993 | 0; |
| 994 | |
| 995 | /* could be some non-MMX ones in the future, but not currently: */ |
| 996 | settable_asm_flags = settable_mmx_flags; |
| 997 | |
| 998 | if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) || |
| 999 | !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)) |
| 1000 | { |
| 1001 | /* clear all MMX flags if MMX isn't supported */ |
| 1002 | settable_asm_flags &= ~settable_mmx_flags; |
| 1003 | png_ptr->asm_flags &= ~settable_mmx_flags; |
| 1004 | } |
| 1005 | |
| 1006 | /* we're replacing the settable bits with those passed in by the user, |
| 1007 | * so first zero them out of the master copy, then logical-OR in the |
| 1008 | * allowed subset that was requested */ |
| 1009 | |
| 1010 | png_ptr->asm_flags &= ~settable_asm_flags; /* zero them */ |
| 1011 | png_ptr->asm_flags |= (asm_flags & settable_asm_flags); /* set them */ |
| 1012 | } |
| 1013 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |
| 1014 | |
| 1015 | #ifdef PNG_ASSEMBLER_CODE_SUPPORTED |
| 1016 | /* this function was added to libpng 1.2.0 */ |
| 1017 | void PNGAPI |
| 1018 | png_set_mmx_thresholds (png_structp png_ptr, |
| 1019 | png_byte mmx_bitdepth_threshold, |
| 1020 | png_uint_32 mmx_rowbytes_threshold) |
| 1021 | { |
| 1022 | png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold; |
| 1023 | png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold; |
| 1024 | } |
| 1025 | #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ |