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 | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 4 | * libpng 1.0.9beta10 - January 16, 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 | fbbb5ec | 2001-01-15 22:01:20 -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; |
| 112 | } |
| 113 | #endif |
| 114 | #endif |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 115 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 116 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 117 | int_gamma) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 118 | { |
| 119 | png_debug1(1, "in %s storage function\n", "gAMA"); |
| 120 | if (png_ptr == NULL || info_ptr == NULL) |
| 121 | return; |
| 122 | |
| 123 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 124 | info_ptr->gamma = (float)(int_gamma/100000.); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 125 | #endif |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 126 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 127 | info_ptr->int_gamma = int_gamma; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 128 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 129 | info_ptr->valid |= PNG_INFO_gAMA; |
| 130 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 131 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 132 | #if defined(PNG_hIST_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 133 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 134 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) |
| 135 | { |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 136 | int i; |
| 137 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 138 | png_debug1(1, "in %s storage function\n", "hIST"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 139 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 140 | return; |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 141 | if (info_ptr->num_palette == 0) |
| 142 | png_warning(png_ptr, |
| 143 | "Palette size 0, hIST allocation skipped."); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 144 | |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 145 | #ifdef PNG_FREE_ME_SUPPORTED |
| 146 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
| 147 | #endif |
| 148 | png_ptr->hist = (png_uint_16p)png_malloc(png_ptr, |
| 149 | (png_uint_32)(info_ptr->num_palette * sizeof (png_uint_16))); |
| 150 | |
| 151 | for (i = 0; i < info_ptr->num_palette; i++) |
| 152 | png_ptr->hist[i] = hist[i]; |
| 153 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 154 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 155 | |
| 156 | #ifdef PNG_FREE_ME_SUPPORTED |
| 157 | info_ptr->free_me |= PNG_FREE_HIST; |
| 158 | #else |
| 159 | png_ptr->flags |= PNG_FLAG_FREE_HIST; |
| 160 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 161 | } |
| 162 | #endif |
| 163 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 164 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 165 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 166 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 167 | int color_type, int interlace_type, int compression_type, |
| 168 | int filter_type) |
| 169 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 170 | int rowbytes_per_pixel; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 171 | png_debug1(1, "in %s storage function\n", "IHDR"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 172 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 173 | return; |
| 174 | |
| 175 | info_ptr->width = width; |
| 176 | info_ptr->height = height; |
| 177 | info_ptr->bit_depth = (png_byte)bit_depth; |
| 178 | info_ptr->color_type =(png_byte) color_type; |
| 179 | info_ptr->compression_type = (png_byte)compression_type; |
| 180 | info_ptr->filter_type = (png_byte)filter_type; |
| 181 | info_ptr->interlace_type = (png_byte)interlace_type; |
| 182 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 183 | info_ptr->channels = 1; |
| 184 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
| 185 | info_ptr->channels = 3; |
| 186 | else |
| 187 | info_ptr->channels = 1; |
| 188 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 189 | info_ptr->channels++; |
| 190 | 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] | 191 | |
| 192 | /* check for overflow */ |
| 193 | rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 194 | if (( width > PNG_MAX_UINT/rowbytes_per_pixel)) |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 195 | { |
| 196 | png_warning(png_ptr, |
| 197 | "Width too large to process image data; rowbytes will overflow."); |
| 198 | info_ptr->rowbytes = (png_size_t)0; |
| 199 | } |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 200 | else |
| 201 | info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 202 | } |
| 203 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 204 | #if defined(PNG_oFFs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 205 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 206 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 207 | 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] | 208 | { |
| 209 | png_debug1(1, "in %s storage function\n", "oFFs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 210 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 211 | return; |
| 212 | |
| 213 | info_ptr->x_offset = offset_x; |
| 214 | info_ptr->y_offset = offset_y; |
| 215 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 216 | info_ptr->valid |= PNG_INFO_oFFs; |
| 217 | } |
| 218 | #endif |
| 219 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 220 | #if defined(PNG_pCAL_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 221 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 222 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
| 223 | png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 224 | png_charp units, png_charpp params) |
| 225 | { |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 226 | png_uint_32 length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 227 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 228 | |
| 229 | png_debug1(1, "in %s storage function\n", "pCAL"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 230 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 231 | return; |
| 232 | |
| 233 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 234 | png_debug1(3, "allocating purpose for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 235 | info_ptr->pcal_purpose = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 236 | png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 237 | |
| 238 | png_debug(3, "storing X0, X1, type, and nparams in info\n"); |
| 239 | info_ptr->pcal_X0 = X0; |
| 240 | info_ptr->pcal_X1 = X1; |
| 241 | info_ptr->pcal_type = (png_byte)type; |
| 242 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 243 | |
| 244 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 245 | png_debug1(3, "allocating units for info (%lu bytes)\n", length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 246 | info_ptr->pcal_units = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 247 | png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 248 | |
| 249 | info_ptr->pcal_params = (png_charpp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 250 | (png_uint_32)((nparams + 1) * sizeof(png_charp))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 251 | info_ptr->pcal_params[nparams] = NULL; |
| 252 | |
| 253 | for (i = 0; i < nparams; i++) |
| 254 | { |
| 255 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 256 | 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] | 257 | info_ptr->pcal_params[i] = (png_charp)png_malloc(png_ptr, length); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 258 | 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] | 259 | } |
| 260 | |
| 261 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 262 | #ifdef PNG_FREE_ME_SUPPORTED |
| 263 | info_ptr->free_me |= PNG_FREE_PCAL; |
| 264 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 265 | } |
| 266 | #endif |
| 267 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 268 | #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) |
| 269 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 270 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 271 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 272 | int unit, double width, double height) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 273 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 274 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 275 | if (png_ptr == NULL || info_ptr == NULL) |
| 276 | return; |
| 277 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 278 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 279 | info_ptr->scal_pixel_width = width; |
| 280 | info_ptr->scal_pixel_height = height; |
| 281 | |
| 282 | info_ptr->valid |= PNG_INFO_sCAL; |
| 283 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 284 | #else |
| 285 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 286 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 287 | 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] | 288 | int unit, png_charp swidth, png_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 289 | { |
| 290 | png_uint_32 length; |
| 291 | |
| 292 | png_debug1(1, "in %s storage function\n", "sCAL"); |
| 293 | if (png_ptr == NULL || info_ptr == NULL) |
| 294 | return; |
| 295 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 296 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 297 | |
| 298 | length = png_strlen(swidth) + 1; |
| 299 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
| 300 | info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length); |
| 301 | png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length); |
| 302 | |
| 303 | length = png_strlen(sheight) + 1; |
| 304 | png_debug1(3, "allocating unit for info (%d bytes)\n", length); |
| 305 | info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length); |
| 306 | png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length); |
| 307 | |
| 308 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 309 | #ifdef PNG_FREE_ME_SUPPORTED |
| 310 | info_ptr->free_me |= PNG_FREE_SCAL; |
| 311 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 312 | } |
| 313 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 314 | #endif |
| 315 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 316 | |
| 317 | #if defined(PNG_pHYs_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 318 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 319 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
| 320 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
| 321 | { |
| 322 | png_debug1(1, "in %s storage function\n", "pHYs"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 323 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 324 | return; |
| 325 | |
| 326 | info_ptr->x_pixels_per_unit = res_x; |
| 327 | info_ptr->y_pixels_per_unit = res_y; |
| 328 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 329 | info_ptr->valid |= PNG_INFO_pHYs; |
| 330 | } |
| 331 | #endif |
| 332 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 333 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 334 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
| 335 | png_colorp palette, int num_palette) |
| 336 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 337 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 338 | png_debug1(1, "in %s storage function\n", "PLTE"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 339 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 340 | return; |
| 341 | |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 342 | /* |
| 343 | * It may not actually be necessary to set png_ptr->palette here; |
| 344 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 345 | * function used to do the allocation. |
| 346 | */ |
| 347 | #ifdef PNG_FREE_ME_SUPPORTED |
| 348 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
| 349 | #endif |
| 350 | png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette, |
| 351 | sizeof (png_color)); |
| 352 | memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color)); |
| 353 | info_ptr->palette = png_ptr->palette; |
| 354 | 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] | 355 | |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 356 | #ifdef PNG_FREE_ME_SUPPORTED |
| 357 | info_ptr->free_me |= PNG_FREE_PLTE; |
| 358 | #else |
| 359 | png_ptr->flags |= PNG_FLAG_FREE_PLTE; |
| 360 | #endif |
| 361 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 362 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 363 | } |
| 364 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 365 | #if defined(PNG_sBIT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 366 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 367 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
| 368 | png_color_8p sig_bit) |
| 369 | { |
| 370 | png_debug1(1, "in %s storage function\n", "sBIT"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 371 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 372 | return; |
| 373 | |
| 374 | png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof (png_color_8)); |
| 375 | info_ptr->valid |= PNG_INFO_sBIT; |
| 376 | } |
| 377 | #endif |
| 378 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 379 | #if defined(PNG_sRGB_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 380 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 381 | 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] | 382 | { |
| 383 | png_debug1(1, "in %s storage function\n", "sRGB"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 384 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 385 | return; |
| 386 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 387 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 388 | info_ptr->valid |= PNG_INFO_sRGB; |
| 389 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 390 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 391 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 392 | 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] | 393 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 394 | { |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 395 | #if defined(PNG_gAMA_SUPPORTED) |
| 396 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 397 | float file_gamma; |
| 398 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 399 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 400 | png_fixed_point int_file_gamma; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 401 | #endif |
| 402 | #endif |
| 403 | #if defined(PNG_cHRM_SUPPORTED) |
| 404 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 405 | float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; |
| 406 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 407 | #ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 408 | 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] | 409 | int_green_y, int_blue_x, int_blue_y; |
| 410 | #endif |
| 411 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 412 | 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] | 413 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 414 | return; |
| 415 | |
| 416 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 417 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 418 | #if defined(PNG_gAMA_SUPPORTED) |
| 419 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | ab1e583 | 1999-10-06 04:57:42 -0500 | [diff] [blame] | 420 | file_gamma = (float).45455; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 421 | png_set_gAMA(png_ptr, info_ptr, file_gamma); |
| 422 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 423 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 424 | int_file_gamma = 45455L; |
| 425 | png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); |
| 426 | #endif |
| 427 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 428 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 429 | #if defined(PNG_cHRM_SUPPORTED) |
| 430 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 431 | int_white_x = 31270L; |
| 432 | int_white_y = 32900L; |
| 433 | int_red_x = 64000L; |
| 434 | int_red_y = 33000L; |
| 435 | int_green_x = 30000L; |
| 436 | int_green_y = 60000L; |
| 437 | int_blue_x = 15000L; |
| 438 | int_blue_y = 6000L; |
| 439 | |
| 440 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 441 | int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y, |
| 442 | int_blue_x, int_blue_y); |
| 443 | #endif |
| 444 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 70e3f54 | 1998-01-03 22:40:55 -0600 | [diff] [blame] | 445 | white_x = (float).3127; |
| 446 | white_y = (float).3290; |
| 447 | red_x = (float).64; |
| 448 | red_y = (float).33; |
| 449 | green_x = (float).30; |
| 450 | green_y = (float).60; |
| 451 | blue_x = (float).15; |
| 452 | blue_y = (float).06; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 453 | |
| 454 | png_set_cHRM(png_ptr, info_ptr, |
| 455 | 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] | 456 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 457 | #endif |
| 458 | } |
| 459 | #endif |
| 460 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 461 | |
| 462 | #if defined(PNG_iCCP_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 463 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 464 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
| 465 | png_charp name, int compression_type, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 466 | png_charp profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 467 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 468 | png_charp new_iccp_name; |
| 469 | png_charp new_iccp_profile; |
| 470 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 471 | png_debug1(1, "in %s storage function\n", "iCCP"); |
| 472 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 473 | return; |
| 474 | |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 475 | new_iccp_name = png_malloc(png_ptr, png_strlen(name)+1); |
| 476 | strcpy(new_iccp_name, name); |
| 477 | new_iccp_profile = png_malloc(png_ptr, proflen); |
| 478 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 479 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 480 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 481 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 482 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 483 | info_ptr->iccp_name = new_iccp_name; |
| 484 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 485 | /* 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] | 486 | * does not have to change if we introduce multiple compression types */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 487 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 488 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 489 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 490 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 491 | info_ptr->valid |= PNG_INFO_iCCP; |
| 492 | } |
| 493 | #endif |
| 494 | |
| 495 | #if defined(PNG_TEXT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 496 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 497 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, |
| 498 | int num_text) |
| 499 | { |
| 500 | int i; |
| 501 | |
| 502 | 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] | 503 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 504 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 505 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 506 | return; |
| 507 | |
| 508 | /* Make sure we have enough space in the "text" array in info_struct |
| 509 | * to hold all of the incoming text_ptr objects. |
| 510 | */ |
| 511 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 512 | { |
| 513 | if (info_ptr->text != NULL) |
| 514 | { |
| 515 | png_textp old_text; |
| 516 | int old_max; |
| 517 | |
| 518 | old_max = info_ptr->max_text; |
| 519 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 520 | old_text = info_ptr->text; |
| 521 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 522 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 523 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
| 524 | sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 525 | png_free(png_ptr, old_text); |
| 526 | } |
| 527 | else |
| 528 | { |
| 529 | info_ptr->max_text = num_text + 8; |
| 530 | info_ptr->num_text = 0; |
| 531 | info_ptr->text = (png_textp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 532 | (png_uint_32)(info_ptr->max_text * sizeof (png_text))); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 533 | #ifdef PNG_FREE_ME_SUPPORTED |
| 534 | info_ptr->free_me |= PNG_FREE_TEXT; |
| 535 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 536 | } |
| 537 | png_debug1(3, "allocated %d entries for info_ptr->text\n", |
| 538 | info_ptr->max_text); |
| 539 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 540 | for (i = 0; i < num_text; i++) |
| 541 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 542 | png_size_t text_length,key_len; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 543 | png_size_t lang_len,lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 544 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 545 | |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 546 | if (text_ptr[i].key == (png_charp)NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 547 | continue; |
| 548 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 549 | key_len = png_strlen(text_ptr[i].key); |
| 550 | |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 551 | if(text_ptr[i].compression <= 0) |
| 552 | { |
| 553 | lang_len = 0; |
| 554 | lang_key_len = 0; |
| 555 | } |
| 556 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 557 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 558 | { |
| 559 | /* set iTXt data */ |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 560 | if (text_ptr[i].key != (png_charp)NULL) |
| 561 | lang_len = png_strlen(text_ptr[i].lang); |
| 562 | else |
| 563 | lang_len = 0; |
| 564 | if (text_ptr[i].lang_key != (png_charp)NULL) |
| 565 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
| 566 | else |
| 567 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 568 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 569 | #else |
| 570 | { |
| 571 | png_warning(png_ptr, "iTXt chunk not supported."); |
| 572 | continue; |
| 573 | } |
| 574 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 575 | |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 576 | if (text_ptr[i].text == (png_charp)NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 577 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 578 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 579 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 580 | if(text_ptr[i].compression > 0) |
| 581 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
| 582 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 583 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 584 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 585 | } |
| 586 | else |
| 587 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 588 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 589 | textp->compression = text_ptr[i].compression; |
| 590 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 591 | |
| 592 | textp->key = (png_charp)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 593 | (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 594 | png_debug2(2, "Allocated %d bytes at %x in png_set_text\n", |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 595 | 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] | 596 | |
| 597 | png_memcpy(textp->key, text_ptr[i].key, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 598 | (png_size_t)(key_len)); |
| 599 | *(textp->key+key_len) = '\0'; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 600 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 601 | if (text_ptr[i].compression > 0) |
| 602 | { |
| 603 | textp->lang=textp->key + key_len + 1; |
| 604 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
| 605 | *(textp->lang+lang_len) = '\0'; |
| 606 | textp->lang_key=textp->lang + lang_len + 1; |
| 607 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
| 608 | *(textp->lang_key+lang_key_len) = '\0'; |
| 609 | textp->text=textp->lang_key + lang_key_len + 1; |
| 610 | } |
| 611 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 612 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 613 | { |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 614 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 615 | textp->lang=(png_charp)NULL; |
| 616 | textp->lang_key=(png_charp)NULL; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 617 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 618 | textp->text=textp->key + key_len + 1; |
| 619 | } |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 620 | if(text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 621 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 622 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 623 | *(textp->text+text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 624 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 625 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 626 | if(textp->compression > 0) |
| 627 | { |
| 628 | textp->text_length = 0; |
| 629 | textp->itxt_length = text_length; |
| 630 | } |
| 631 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 632 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 633 | { |
| 634 | textp->text_length = text_length; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 635 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 636 | textp->itxt_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 637 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 638 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 639 | info_ptr->text[info_ptr->num_text]= *textp; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 640 | info_ptr->num_text++; |
| 641 | png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text); |
| 642 | } |
| 643 | } |
| 644 | #endif |
| 645 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 646 | #if defined(PNG_tIME_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 647 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 648 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) |
| 649 | { |
| 650 | png_debug1(1, "in %s storage function\n", "tIME"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 651 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 652 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 653 | return; |
| 654 | |
| 655 | png_memcpy(&(info_ptr->mod_time), mod_time, sizeof (png_time)); |
| 656 | info_ptr->valid |= PNG_INFO_tIME; |
| 657 | } |
| 658 | #endif |
| 659 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 660 | #if defined(PNG_tRNS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 661 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 662 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
| 663 | png_bytep trans, int num_trans, png_color_16p trans_values) |
| 664 | { |
| 665 | png_debug1(1, "in %s storage function\n", "tRNS"); |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 666 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 667 | return; |
| 668 | |
| 669 | if (trans != NULL) |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 670 | { |
| 671 | /* |
| 672 | * It may not actually be necessary to set png_ptr->trans here; |
| 673 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 674 | * function used to do the allocation. |
| 675 | */ |
| 676 | #ifdef PNG_FREE_ME_SUPPORTED |
| 677 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
| 678 | #endif |
| 679 | png_ptr->trans = info_ptr->trans = png_malloc(png_ptr, num_trans); |
| 680 | memcpy(info_ptr->trans, trans, num_trans); |
| 681 | #ifdef PNG_FREE_ME_SUPPORTED |
| 682 | info_ptr->free_me |= PNG_FREE_TRNS; |
| 683 | #else |
| 684 | png_ptr->flags |= PNG_FLAG_FREE_TRNS; |
| 685 | #endif |
| 686 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 687 | |
| 688 | if (trans_values != NULL) |
| 689 | { |
| 690 | png_memcpy(&(info_ptr->trans_values), trans_values, |
| 691 | sizeof(png_color_16)); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 692 | if (num_trans == 0) |
| 693 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 694 | } |
| 695 | info_ptr->num_trans = (png_uint_16)num_trans; |
| 696 | info_ptr->valid |= PNG_INFO_tRNS; |
| 697 | } |
| 698 | #endif |
| 699 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 700 | #if defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 701 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 702 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 703 | png_infop info_ptr, png_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 704 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 705 | png_sPLT_tp np; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 706 | int i; |
| 707 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 708 | np = (png_sPLT_tp)png_malloc(png_ptr, |
| 709 | (info_ptr->splt_palettes_num + nentries) * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 710 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 711 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 712 | info_ptr->splt_palettes_num * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 713 | png_free(png_ptr, info_ptr->splt_palettes); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 714 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 715 | |
| 716 | for (i = 0; i < nentries; i++) |
| 717 | { |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 718 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
| 719 | png_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 720 | |
| 721 | to->name = (png_charp)png_malloc(png_ptr, |
| 722 | png_strlen(from->name) + 1); |
| 723 | png_strcpy(to->name, from->name); |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 724 | to->entries = (png_sPLT_entryp)png_malloc(png_ptr, |
| 725 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 726 | png_memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 727 | from->nentries * sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 728 | to->nentries = from->nentries; |
| 729 | to->depth = from->depth; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | info_ptr->splt_palettes = np; |
| 733 | info_ptr->splt_palettes_num += nentries; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 734 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 735 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 736 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 737 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 738 | } |
| 739 | #endif /* PNG_sPLT_SUPPORTED */ |
| 740 | |
| 741 | #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 742 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 743 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 744 | png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 745 | { |
| 746 | png_unknown_chunkp np; |
| 747 | int i; |
| 748 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 749 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
| 750 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 751 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 752 | np = (png_unknown_chunkp)png_malloc(png_ptr, |
| 753 | (info_ptr->unknown_chunks_num + num_unknowns) * |
| 754 | sizeof(png_unknown_chunk)); |
| 755 | |
| 756 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 757 | info_ptr->unknown_chunks_num * sizeof(png_unknown_chunk)); |
| 758 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 759 | info_ptr->unknown_chunks=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 760 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 761 | for (i = 0; i < num_unknowns; i++) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 762 | { |
| 763 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
| 764 | png_unknown_chunkp from = unknowns + i; |
| 765 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 766 | png_strcpy((png_charp)to->name, (png_charp)from->name); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 767 | to->data = (png_bytep)png_malloc(png_ptr, from->size); |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 768 | png_memcpy(to->data, from->data, from->size); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 769 | to->size = from->size; |
| 770 | |
| 771 | /* note our location in the read or write sequence */ |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 772 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | info_ptr->unknown_chunks = np; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 776 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 777 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 778 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 779 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 780 | } |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 781 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 782 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
| 783 | int chunk, int location) |
| 784 | { |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 785 | if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 786 | (int)info_ptr->unknown_chunks_num) |
| 787 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 788 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 789 | #endif |
| 790 | |
Glenn Randers-Pehrson | 520a764 | 2000-03-21 05:13:06 -0600 | [diff] [blame] | 791 | #if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ |
| 792 | defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 793 | void PNGAPI |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 794 | png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) |
| 795 | { |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 796 | /* This function is deprecated in favor of png_permit_mng_features() |
| 797 | and will be removed from libpng-2.0.0 */ |
| 798 | png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n"); |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 799 | if (png_ptr == NULL) |
| 800 | return; |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 801 | png_ptr->mng_features_permitted = (png_byte) |
| 802 | ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) | |
| 803 | ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); |
| 804 | } |
| 805 | #endif |
| 806 | |
| 807 | #if defined(PNG_MNG_FEATURES_SUPPORTED) |
| 808 | png_uint_32 PNGAPI |
| 809 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 810 | { |
| 811 | png_debug(1, "in png_permit_mng_features\n"); |
| 812 | if (png_ptr == NULL) |
| 813 | return (png_uint_32)0; |
| 814 | png_ptr->mng_features_permitted = |
| 815 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
| 816 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 817 | } |
| 818 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 819 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 820 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 821 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 822 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep |
| 823 | chunk_list, int num_chunks) |
| 824 | { |
| 825 | png_bytep new_list, p; |
| 826 | int i, old_num_chunks; |
| 827 | if (num_chunks == 0) |
| 828 | { |
| 829 | if(keep == HANDLE_CHUNK_ALWAYS || keep == HANDLE_CHUNK_IF_SAFE) |
| 830 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
| 831 | else |
| 832 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 833 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 834 | if(keep == HANDLE_CHUNK_ALWAYS) |
| 835 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 836 | else |
| 837 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
| 838 | return; |
| 839 | } |
| 840 | if (chunk_list == NULL) |
| 841 | return; |
| 842 | old_num_chunks=png_ptr->num_chunk_list; |
| 843 | new_list=png_malloc(png_ptr,5*(num_chunks+old_num_chunks)); |
| 844 | if(png_ptr->chunk_list != (png_bytep)NULL) |
| 845 | { |
| 846 | 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] | 847 | png_free(png_ptr, png_ptr->chunk_list); |
Glenn Randers-Pehrson | 4766a24 | 2000-07-17 06:17:09 -0500 | [diff] [blame] | 848 | png_ptr->chunk_list=NULL; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 849 | } |
| 850 | png_memcpy(new_list+5*old_num_chunks, chunk_list, 5*num_chunks); |
| 851 | for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5) |
| 852 | *p=(png_byte)keep; |
| 853 | png_ptr->num_chunk_list=old_num_chunks+num_chunks; |
| 854 | png_ptr->chunk_list=new_list; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 855 | #ifdef PNG_FREE_ME_SUPPORTED |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 856 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 6942d53 | 2000-05-01 09:31:54 -0500 | [diff] [blame] | 857 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 858 | } |
| 859 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 860 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 861 | #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 862 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 863 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
| 864 | png_user_chunk_ptr read_user_chunk_fn) |
| 865 | { |
| 866 | png_debug(1, "in png_set_read_user_chunk_fn\n"); |
| 867 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 868 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 869 | } |
| 870 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 871 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 872 | #if defined(PNG_INFO_IMAGE_SUPPORTED) |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 873 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 874 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 875 | { |
| 876 | png_debug1(1, "in %s storage function\n", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 877 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 878 | if (png_ptr == NULL || info_ptr == NULL) |
| 879 | return; |
| 880 | |
Glenn Randers-Pehrson | ec61c23 | 2000-05-16 06:17:36 -0500 | [diff] [blame] | 881 | if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 882 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 883 | info_ptr->row_pointers = row_pointers; |
| 884 | if(row_pointers) |
| 885 | info_ptr->valid |= PNG_INFO_IDAT; |
| 886 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 887 | } |
| 888 | #endif |
| 889 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 890 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 891 | png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size) |
| 892 | { |
| 893 | if(png_ptr->zbuf) |
| 894 | png_free(png_ptr, png_ptr->zbuf); |
| 895 | png_ptr->zbuf_size = (png_size_t)size; |
| 896 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 897 | if(!png_ptr->zbuf) |
| 898 | png_error(png_ptr,"Unable to malloc zbuf"); |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 899 | png_ptr->zstream.next_out = png_ptr->zbuf; |
| 900 | png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; |
| 901 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 902 | |
| 903 | void PNGAPI |
| 904 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 905 | { |
| 906 | if (png_ptr && info_ptr) |
| 907 | info_ptr->valid &= ~(mask); |
| 908 | } |
Glenn Randers-Pehrson | fbbb5ec | 2001-01-15 22:01:20 -0600 | [diff] [blame^] | 909 | |