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 | f0eda4e | 2010-10-15 15:01:57 -0500 | [diff] [blame^] | 4 | * Last changed in libpng 1.5.0 [(PENDING RELEASE)] |
Glenn Randers-Pehrson | e69b55d | 2010-01-01 10:29:06 -0600 | [diff] [blame] | 5 | * Copyright (c) 1998-2010 Glenn Randers-Pehrson |
Glenn Randers-Pehrson | d436672 | 2000-06-04 14:29:29 -0500 | [diff] [blame] | 6 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
| 7 | * (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] | 8 | * |
Glenn Randers-Pehrson | bfbf865 | 2009-06-26 21:46:52 -0500 | [diff] [blame] | 9 | * This code is released under the libpng license. |
Glenn Randers-Pehrson | c332bbc | 2009-06-25 13:43:50 -0500 | [diff] [blame] | 10 | * For conditions of distribution and use, see the disclaimer |
Glenn Randers-Pehrson | 037023b | 2009-06-24 10:27:36 -0500 | [diff] [blame] | 11 | * and license in png.h |
Glenn Randers-Pehrson | 3e61d79 | 2009-06-24 09:31:28 -0500 | [diff] [blame] | 12 | * |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 13 | * The functions here are used during reads to store data from the file |
| 14 | * into the info struct, and during writes to store application data |
| 15 | * into the info struct for writing into the file. This abstracts the |
| 16 | * info struct and allows us to change the structure in the future. |
| 17 | */ |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 18 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 19 | #include "pngpriv.h" |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 20 | |
Glenn Randers-Pehrson | c3cd22b | 2010-03-08 21:10:25 -0600 | [diff] [blame] | 21 | #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) |
| 22 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 23 | #ifdef PNG_bKGD_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 24 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 25 | png_set_bKGD(png_structp png_ptr, png_infop info_ptr, |
| 26 | png_const_color_16p background) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 27 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 28 | png_debug1(1, "in %s storage function", "bKGD"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 29 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 30 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 31 | return; |
| 32 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 33 | png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 34 | info_ptr->valid |= PNG_INFO_bKGD; |
| 35 | } |
| 36 | #endif |
| 37 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 38 | #ifdef PNG_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 39 | void PNGFAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 40 | png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 41 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, |
| 42 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, |
| 43 | png_fixed_point blue_x, png_fixed_point blue_y) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 44 | { |
Glenn Randers-Pehrson | d6d8075 | 2008-12-02 09:49:43 -0600 | [diff] [blame] | 45 | png_debug1(1, "in %s storage function", "cHRM fixed"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 46 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 47 | if (png_ptr == NULL || info_ptr == NULL) |
| 48 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 49 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 50 | #ifdef PNG_CHECK_cHRM_SUPPORTED |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 51 | if (png_check_cHRM_fixed(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 52 | white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) |
Glenn Randers-Pehrson | 71a3c1f | 2008-11-26 12:00:38 -0600 | [diff] [blame] | 53 | #endif |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 54 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 55 | info_ptr->x_white = white_x; |
| 56 | info_ptr->y_white = white_y; |
| 57 | info_ptr->x_red = red_x; |
| 58 | info_ptr->y_red = red_y; |
| 59 | info_ptr->x_green = green_x; |
| 60 | info_ptr->y_green = green_y; |
| 61 | info_ptr->x_blue = blue_x; |
| 62 | info_ptr->y_blue = blue_y; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 63 | info_ptr->valid |= PNG_INFO_cHRM; |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 64 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 65 | } |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 66 | |
| 67 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 68 | void PNGAPI |
| 69 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, |
| 70 | double white_x, double white_y, double red_x, double red_y, |
| 71 | double green_x, double green_y, double blue_x, double blue_y) |
| 72 | { |
| 73 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 74 | png_fixed(png_ptr, white_x, "cHRM White X"), |
| 75 | png_fixed(png_ptr, white_y, "cHRM White Y"), |
| 76 | png_fixed(png_ptr, red_x, "cHRM Red X"), |
| 77 | png_fixed(png_ptr, red_y, "cHRM Red Y"), |
| 78 | png_fixed(png_ptr, green_x, "cHRM Green X"), |
| 79 | png_fixed(png_ptr, green_y, "cHRM Green Y"), |
| 80 | png_fixed(png_ptr, blue_x, "cHRM Blue X"), |
| 81 | png_fixed(png_ptr, blue_y, "cHRM Blue Y")); |
| 82 | } |
| 83 | #endif /* PNG_FLOATING_POINT_SUPPORTED */ |
| 84 | |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 85 | #endif /* PNG_cHRM_SUPPORTED */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 86 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 87 | #ifdef PNG_gAMA_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 88 | void PNGFAPI |
| 89 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
| 90 | gamma) |
| 91 | { |
| 92 | png_debug1(1, "in %s storage function", "gAMA"); |
| 93 | |
| 94 | if (png_ptr == NULL || info_ptr == NULL) |
| 95 | return; |
| 96 | |
| 97 | /* Previously these values were limited, however they must be |
Glenn Randers-Pehrson | 363f96e | 2010-08-11 09:00:26 -0500 | [diff] [blame] | 98 | * wrong, therefore storing them (and setting PNG_INFO_gAMA) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 99 | * must be wrong too. |
| 100 | */ |
| 101 | if (gamma > (png_fixed_point)PNG_UINT_31_MAX) |
| 102 | png_warning(png_ptr, "Gamma too large, ignored"); |
| 103 | |
| 104 | else if (gamma <= 0) |
Glenn Randers-Pehrson | 363f96e | 2010-08-11 09:00:26 -0500 | [diff] [blame] | 105 | png_warning(png_ptr, "Negative or zero gamma ignored"); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 106 | |
| 107 | else |
| 108 | { |
| 109 | info_ptr->gamma = gamma; |
| 110 | info_ptr->valid |= PNG_INFO_gAMA; |
| 111 | } |
| 112 | } |
| 113 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 114 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 115 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 116 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 117 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 118 | png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma, |
| 119 | "png_set_gAMA")); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 120 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 121 | #endif |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 122 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 123 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 124 | #ifdef PNG_hIST_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 125 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 126 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_const_uint_16p hist) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 127 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 128 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 129 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 130 | png_debug1(1, "in %s storage function", "hIST"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 131 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 132 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 133 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 134 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 135 | if (info_ptr->num_palette == 0 || info_ptr->num_palette |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 136 | > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 137 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 138 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 139 | "Invalid palette size, hIST allocation skipped"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 140 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 141 | return; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 142 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 143 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 144 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 145 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in |
| 146 | * version 1.2.1 |
| 147 | */ |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 148 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 149 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 150 | if (png_ptr->hist == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 151 | { |
| 152 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); |
| 153 | return; |
| 154 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 155 | |
| 156 | for (i = 0; i < info_ptr->num_palette; i++) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 157 | png_ptr->hist[i] = hist[i]; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 158 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 159 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 160 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 161 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 162 | info_ptr->free_me |= PNG_FREE_HIST; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 163 | } |
| 164 | #endif |
| 165 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 166 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 167 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
| 168 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 169 | int color_type, int interlace_type, int compression_type, |
| 170 | int filter_type) |
| 171 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 172 | png_debug1(1, "in %s storage function", "IHDR"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 173 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 174 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 175 | return; |
| 176 | |
| 177 | info_ptr->width = width; |
| 178 | info_ptr->height = height; |
| 179 | info_ptr->bit_depth = (png_byte)bit_depth; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 180 | info_ptr->color_type = (png_byte)color_type; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 181 | info_ptr->compression_type = (png_byte)compression_type; |
| 182 | info_ptr->filter_type = (png_byte)filter_type; |
| 183 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 184 | |
| 185 | png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, |
| 186 | info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, |
| 187 | info_ptr->compression_type, info_ptr->filter_type); |
| 188 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 189 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 190 | info_ptr->channels = 1; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 191 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 192 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 193 | info_ptr->channels = 3; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 194 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 195 | else |
| 196 | info_ptr->channels = 1; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 197 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 198 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 199 | info_ptr->channels++; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 200 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 201 | 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] | 202 | |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 203 | /* Check for potential overflow */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 204 | if (width > (PNG_UINT_32_MAX |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 205 | >> 3) /* 8-byte RRGGBBAA pixels */ |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 206 | - 64 /* bigrowbuf hack */ |
| 207 | - 1 /* filter byte */ |
| 208 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 209 | - 8) /* extra max_pixel_depth pad */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 210 | info_ptr->rowbytes = 0; |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 211 | else |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 212 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 213 | } |
| 214 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 215 | #ifdef PNG_oFFs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 216 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 217 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 218 | 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] | 219 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 220 | png_debug1(1, "in %s storage function", "oFFs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 221 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 222 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 223 | return; |
| 224 | |
| 225 | info_ptr->x_offset = offset_x; |
| 226 | info_ptr->y_offset = offset_y; |
| 227 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 228 | info_ptr->valid |= PNG_INFO_oFFs; |
| 229 | } |
| 230 | #endif |
| 231 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 232 | #ifdef PNG_pCAL_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 233 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 234 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 235 | png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, |
| 236 | int nparams, png_const_charp units, png_charpp params) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 237 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 238 | png_size_t length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 239 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 240 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 241 | png_debug1(1, "in %s storage function", "pCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 242 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 243 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 244 | return; |
| 245 | |
| 246 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 247 | png_debug1(3, "allocating purpose for info (%lu bytes)", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 248 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 249 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 250 | /* TODO: validate format of calibration name and unit name */ |
| 251 | |
| 252 | /* Check that the type matches the specification. */ |
| 253 | if (type < 0 || type > 3) |
| 254 | png_error(png_ptr, "Invalid pCAL equation type"); |
| 255 | |
| 256 | /* Validate params[nparams] */ |
| 257 | for (i=0; i<nparams; ++i) |
| 258 | if (!png_check_fp_string(params[i], png_strlen(params[i]))) |
| 259 | png_error(png_ptr, "Invalid format for pCAL parameter"); |
| 260 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 261 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); |
| 262 | if (info_ptr->pcal_purpose == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 263 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 264 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 265 | return; |
| 266 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 267 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 268 | png_memcpy(info_ptr->pcal_purpose, purpose, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 269 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 270 | png_debug(3, "storing X0, X1, type, and nparams in info"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 271 | info_ptr->pcal_X0 = X0; |
| 272 | info_ptr->pcal_X1 = X1; |
| 273 | info_ptr->pcal_type = (png_byte)type; |
| 274 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 275 | |
| 276 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 277 | png_debug1(3, "allocating units for info (%lu bytes)", |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 278 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 279 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 280 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); |
| 281 | if (info_ptr->pcal_units == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 282 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 283 | png_warning(png_ptr, "Insufficient memory for pCAL units"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 284 | return; |
| 285 | } |
| 286 | png_memcpy(info_ptr->pcal_units, units, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 287 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 288 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 289 | (png_size_t)((nparams + 1) * png_sizeof(png_charp))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 290 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 291 | if (info_ptr->pcal_params == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 292 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 293 | png_warning(png_ptr, "Insufficient memory for pCAL params"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 294 | return; |
| 295 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 296 | |
Glenn Randers-Pehrson | 0ffb71a | 2009-02-28 06:08:20 -0600 | [diff] [blame] | 297 | png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 298 | |
| 299 | for (i = 0; i < nparams; i++) |
| 300 | { |
| 301 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 302 | png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 303 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 304 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 305 | info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 306 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 307 | if (info_ptr->pcal_params[i] == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 308 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 309 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); |
| 310 | return; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 311 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 312 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 313 | png_memcpy(info_ptr->pcal_params[i], params[i], length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 317 | info_ptr->free_me |= PNG_FREE_PCAL; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 318 | } |
| 319 | #endif |
| 320 | |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 321 | #ifdef PNG_sCAL_SUPPORTED |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 322 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 323 | png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 324 | int unit, png_const_charp swidth, png_const_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 325 | { |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 326 | png_size_t lengthw = 0, lengthh = 0; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 327 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 328 | png_debug1(1, "in %s storage function", "sCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 329 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 330 | if (png_ptr == NULL || info_ptr == NULL) |
| 331 | return; |
| 332 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 333 | /* Double check the unit (should never get here with an invalid |
| 334 | * unit unless this is an API call.) |
| 335 | */ |
| 336 | if (unit != 1 && unit != 2) |
| 337 | png_error(png_ptr, "Invalid sCAL unit"); |
| 338 | |
| 339 | if (swidth == NULL || (lengthw = png_strlen(swidth)) <= 0 || |
| 340 | swidth[0] == 45 /*'-'*/ || !png_check_fp_string(swidth, lengthw)) |
| 341 | png_error(png_ptr, "Invalid sCAL width"); |
| 342 | |
| 343 | if (sheight == NULL || (lengthh = png_strlen(sheight)) <= 0 || |
| 344 | sheight[0] == 45 /*'-'*/ || !png_check_fp_string(sheight, lengthh)) |
| 345 | png_error(png_ptr, "Invalid sCAL height"); |
| 346 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 347 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 348 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 349 | ++lengthw; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 350 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 351 | png_debug1(3, "allocating unit for info (%u bytes)", lengthw); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 352 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 353 | info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, lengthw); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 354 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 355 | if (info_ptr->scal_s_width == NULL) |
| 356 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 357 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 358 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 359 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 360 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 361 | png_memcpy(info_ptr->scal_s_width, swidth, lengthw); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 362 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 363 | ++lengthh; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 364 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 365 | png_debug1(3, "allocating unit for info (%u bytes)", lengthh); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 366 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 367 | info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, lengthh); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 368 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 369 | if (info_ptr->scal_s_height == NULL) |
| 370 | { |
| 371 | png_free (png_ptr, info_ptr->scal_s_width); |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 372 | info_ptr->scal_s_width = NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 373 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 374 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 375 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 376 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 377 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 378 | png_memcpy(info_ptr->scal_s_height, sheight, lengthh); |
| 379 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 380 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 381 | info_ptr->free_me |= PNG_FREE_SCAL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 382 | } |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 383 | |
| 384 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
| 385 | void PNGAPI |
| 386 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width, |
| 387 | double height) |
| 388 | { |
| 389 | png_debug1(1, "in %s storage function", "sCAL"); |
| 390 | |
| 391 | /* Check the arguments. */ |
| 392 | if (width <= 0) |
| 393 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
| 394 | else if (height <= 0) |
| 395 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
| 396 | else |
| 397 | { |
| 398 | /* Convert 'width' and 'height' to ASCII. */ |
| 399 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 400 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 401 | |
| 402 | png_ascii_from_fp(png_ptr, swidth, sizeof swidth, width, |
| 403 | PNG_sCAL_PRECISION); |
| 404 | png_ascii_from_fp(png_ptr, sheight, sizeof sheight, height, |
| 405 | PNG_sCAL_PRECISION); |
| 406 | |
| 407 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 408 | } |
| 409 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 410 | #endif |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 411 | |
| 412 | #ifdef PNG_FIXED_POINT_SUPPORTED |
| 413 | void PNGAPI |
| 414 | png_set_sCAL_fixed(png_structp png_ptr, png_infop info_ptr, int unit, |
| 415 | png_fixed_point width, png_fixed_point height) |
| 416 | { |
| 417 | png_debug1(1, "in %s storage function", "sCAL"); |
| 418 | |
| 419 | /* Check the arguments. */ |
| 420 | if (width <= 0) |
| 421 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
| 422 | else if (height <= 0) |
| 423 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
| 424 | else |
| 425 | { |
| 426 | /* Convert 'width' and 'height' to ASCII. */ |
| 427 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 428 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 429 | |
| 430 | png_ascii_from_fixed(png_ptr, swidth, sizeof swidth, width); |
| 431 | png_ascii_from_fixed(png_ptr, sheight, sizeof sheight, height); |
| 432 | |
| 433 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 434 | } |
| 435 | } |
| 436 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 437 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 438 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 439 | #ifdef PNG_pHYs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 440 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 441 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 442 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 443 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 444 | png_debug1(1, "in %s storage function", "pHYs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 445 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 446 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 447 | return; |
| 448 | |
| 449 | info_ptr->x_pixels_per_unit = res_x; |
| 450 | info_ptr->y_pixels_per_unit = res_y; |
| 451 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 452 | info_ptr->valid |= PNG_INFO_pHYs; |
| 453 | } |
| 454 | #endif |
| 455 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 456 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 457 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 458 | png_const_colorp palette, int num_palette) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 459 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 460 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 461 | png_debug1(1, "in %s storage function", "PLTE"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 462 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 463 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 464 | return; |
| 465 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 466 | if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 467 | { |
| 468 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 469 | png_error(png_ptr, "Invalid palette length"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 470 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 471 | else |
| 472 | { |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 473 | png_warning(png_ptr, "Invalid palette length"); |
| 474 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 475 | } |
| 476 | } |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 477 | |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 478 | /* It may not actually be necessary to set png_ptr->palette here; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 479 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 480 | * function used to do the allocation. |
| 481 | */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 482 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 483 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 484 | /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 485 | * of num_palette entries, in case of an invalid PNG file that has |
| 486 | * too-large sample values. |
| 487 | */ |
Glenn Randers-Pehrson | 79134c6 | 2009-02-14 10:32:18 -0600 | [diff] [blame] | 488 | png_ptr->palette = (png_colorp)png_calloc(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 489 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 490 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 491 | png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color)); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 492 | info_ptr->palette = png_ptr->palette; |
| 493 | 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] | 494 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 495 | info_ptr->free_me |= PNG_FREE_PLTE; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 496 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 497 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 498 | } |
| 499 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 500 | #ifdef PNG_sBIT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 501 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 502 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 503 | png_const_color_8p sig_bit) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 504 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 505 | png_debug1(1, "in %s storage function", "sBIT"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 506 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 507 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 508 | return; |
| 509 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 510 | png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 511 | info_ptr->valid |= PNG_INFO_sBIT; |
| 512 | } |
| 513 | #endif |
| 514 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 515 | #ifdef PNG_sRGB_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 516 | void PNGAPI |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 517 | 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] | 518 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 519 | png_debug1(1, "in %s storage function", "sRGB"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 520 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 521 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 522 | return; |
| 523 | |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 524 | info_ptr->srgb_intent = (png_byte)intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 525 | info_ptr->valid |= PNG_INFO_sRGB; |
| 526 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 527 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 528 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 529 | png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 530 | int intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 531 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 532 | png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 533 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 534 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 535 | return; |
| 536 | |
| 537 | png_set_sRGB(png_ptr, info_ptr, intent); |
| 538 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 539 | #ifdef PNG_gAMA_SUPPORTED |
Glenn Randers-Pehrson | 82980f3 | 2010-06-26 12:31:58 -0500 | [diff] [blame] | 540 | png_set_gAMA_fixed(png_ptr, info_ptr, 45455L); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 541 | #endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 542 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 543 | #ifdef PNG_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 85b0237 | 2009-09-24 19:49:13 -0500 | [diff] [blame] | 544 | png_set_cHRM_fixed(png_ptr, info_ptr, |
Glenn Randers-Pehrson | 82980f3 | 2010-06-26 12:31:58 -0500 | [diff] [blame] | 545 | /* color x y */ |
| 546 | /* white */ 31270L, 32900L, |
| 547 | /* red */ 64000L, 33000L, |
| 548 | /* green */ 30000L, 60000L, |
| 549 | /* blue */ 15000L, 6000L |
| 550 | ); |
Glenn Randers-Pehrson | 02a5e33 | 2008-11-24 22:10:23 -0600 | [diff] [blame] | 551 | #endif /* cHRM */ |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 552 | } |
Glenn Randers-Pehrson | 02a5e33 | 2008-11-24 22:10:23 -0600 | [diff] [blame] | 553 | #endif /* sRGB */ |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 554 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 555 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 556 | #ifdef PNG_iCCP_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 557 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 558 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 559 | png_const_charp name, int compression_type, |
| 560 | png_const_bytep profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 561 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 562 | png_charp new_iccp_name; |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 563 | png_bytep new_iccp_profile; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 564 | png_uint_32 length; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 565 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 566 | png_debug1(1, "in %s storage function", "iCCP"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 567 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 568 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 569 | return; |
| 570 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 571 | length = png_strlen(name)+1; |
| 572 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 573 | if (new_iccp_name == NULL) |
| 574 | { |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 575 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 576 | return; |
| 577 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 578 | png_memcpy(new_iccp_name, name, length); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 579 | new_iccp_profile = (png_bytep)png_malloc_warn(png_ptr, proflen); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 580 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 581 | if (new_iccp_profile == NULL) |
| 582 | { |
| 583 | png_free (png_ptr, new_iccp_name); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 584 | png_warning(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 585 | "Insufficient memory to process iCCP profile"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 586 | return; |
| 587 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 588 | |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 589 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 590 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 591 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 592 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 593 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 594 | info_ptr->iccp_name = new_iccp_name; |
| 595 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 596 | /* Compression is always zero but is here so the API and info structure |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 597 | * does not have to change if we introduce multiple compression types |
| 598 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 599 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 600 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 601 | info_ptr->valid |= PNG_INFO_iCCP; |
| 602 | } |
| 603 | #endif |
| 604 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 605 | #ifdef PNG_TEXT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 606 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 607 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_const_textp text_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 608 | int num_text) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 609 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 610 | int ret; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 611 | ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 612 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 613 | if (ret) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 614 | png_error(png_ptr, "Insufficient memory to store text"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | int /* PRIVATE */ |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 618 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, |
| 619 | png_const_textp text_ptr, int num_text) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 620 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 621 | int i; |
| 622 | |
Glenn Randers-Pehrson | e2a118f | 2009-07-27 22:08:25 -0500 | [diff] [blame] | 623 | png_debug1(1, "in %s storage function", ((png_ptr == NULL || |
| 624 | png_ptr->chunk_name[0] == '\0') ? |
Glenn Randers-Pehrson | c4a2ae6 | 1998-01-16 22:06:18 -0600 | [diff] [blame] | 625 | "text" : (png_const_charp)png_ptr->chunk_name)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 626 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 627 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 628 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 629 | |
| 630 | /* Make sure we have enough space in the "text" array in info_struct |
| 631 | * to hold all of the incoming text_ptr objects. |
| 632 | */ |
| 633 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 634 | { |
| 635 | if (info_ptr->text != NULL) |
| 636 | { |
| 637 | png_textp old_text; |
| 638 | int old_max; |
| 639 | |
| 640 | old_max = info_ptr->max_text; |
| 641 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 642 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 643 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 644 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 645 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 646 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 647 | { |
| 648 | png_free(png_ptr, old_text); |
| 649 | return(1); |
| 650 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 651 | |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 652 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 653 | png_sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 654 | png_free(png_ptr, old_text); |
| 655 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 656 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 657 | else |
| 658 | { |
| 659 | info_ptr->max_text = num_text + 8; |
| 660 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 661 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 662 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 663 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 664 | return(1); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 665 | info_ptr->free_me |= PNG_FREE_TEXT; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 666 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 667 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 668 | png_debug1(3, "allocated %d entries for info_ptr->text", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 669 | info_ptr->max_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 670 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 671 | for (i = 0; i < num_text; i++) |
| 672 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 673 | png_size_t text_length, key_len; |
| 674 | png_size_t lang_len, lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 675 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 676 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 677 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 678 | continue; |
| 679 | |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 680 | if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE || |
| 681 | text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST) |
Glenn Randers-Pehrson | e34f80e | 2010-10-13 06:55:30 -0500 | [diff] [blame] | 682 | { |
| 683 | png_warning(png_ptr, "text compression mode is out of range"); |
| 684 | continue; |
| 685 | } |
| 686 | |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 687 | key_len = png_strlen(text_ptr[i].key); |
| 688 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 689 | if (text_ptr[i].compression <= 0) |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 690 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 691 | lang_len = 0; |
| 692 | lang_key_len = 0; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 693 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 694 | |
Glenn Randers-Pehrson | dd78d52 | 2010-03-30 08:34:02 -0500 | [diff] [blame] | 695 | else |
Glenn Randers-Pehrson | 946c3f9 | 2010-03-30 14:50:07 -0500 | [diff] [blame] | 696 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 697 | { |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 698 | /* Set iTXt data */ |
Glenn Randers-Pehrson | d6ea40a | 2009-11-02 07:32:00 -0600 | [diff] [blame] | 699 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 700 | if (text_ptr[i].lang != NULL) |
| 701 | lang_len = png_strlen(text_ptr[i].lang); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 702 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 703 | else |
| 704 | lang_len = 0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 705 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 706 | if (text_ptr[i].lang_key != NULL) |
| 707 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 708 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 709 | else |
| 710 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 711 | } |
Glenn Randers-Pehrson | d6ea40a | 2009-11-02 07:32:00 -0600 | [diff] [blame] | 712 | #else /* PNG_iTXt_SUPPORTED */ |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 713 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 714 | png_warning(png_ptr, "iTXt chunk not supported"); |
| 715 | continue; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 716 | } |
| 717 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 718 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 719 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 720 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 721 | text_length = 0; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 722 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 723 | if (text_ptr[i].compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 724 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 725 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 726 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 727 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 728 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 729 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 730 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 731 | else |
| 732 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 733 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 734 | textp->compression = text_ptr[i].compression; |
| 735 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 736 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 737 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 738 | (png_size_t) |
| 739 | (key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 740 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 741 | if (textp->key == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 742 | return(1); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 743 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 744 | png_debug2(2, "Allocated %lu bytes at %x in png_set_text", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 745 | (unsigned long)(png_uint_32) |
| 746 | (key_len + lang_len + lang_key_len + text_length + 4), |
| 747 | (int)textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 748 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 749 | png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len)); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 750 | *(textp->key + key_len) = '\0'; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 751 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 752 | if (text_ptr[i].compression > 0) |
| 753 | { |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 754 | textp->lang = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 755 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 756 | *(textp->lang + lang_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 757 | textp->lang_key = textp->lang + lang_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 758 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 759 | *(textp->lang_key + lang_key_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 760 | textp->text = textp->lang_key + lang_key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 761 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 762 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 763 | else |
| 764 | { |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 765 | textp->lang=NULL; |
| 766 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 767 | textp->text = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 768 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 769 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 770 | if (text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 771 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 772 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 773 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 774 | *(textp->text + text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 775 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 776 | #ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 777 | if (textp->compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 778 | { |
| 779 | textp->text_length = 0; |
| 780 | textp->itxt_length = text_length; |
| 781 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 782 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 783 | else |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 784 | #endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 785 | { |
| 786 | textp->text_length = text_length; |
| 787 | textp->itxt_length = 0; |
| 788 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 789 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 790 | info_ptr->num_text++; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 791 | png_debug1(3, "transferred text chunk %d", info_ptr->num_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 792 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 793 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 794 | } |
| 795 | #endif |
| 796 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 797 | #ifdef PNG_tIME_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 798 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 799 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 800 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 801 | png_debug1(1, "in %s storage function", "tIME"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 802 | |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 803 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 804 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 805 | return; |
| 806 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 807 | png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 808 | info_ptr->valid |= PNG_INFO_tIME; |
| 809 | } |
| 810 | #endif |
| 811 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 812 | #ifdef PNG_tRNS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 813 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 814 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 815 | png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 816 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 817 | png_debug1(1, "in %s storage function", "tRNS"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 818 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 819 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 820 | return; |
| 821 | |
Glenn Randers-Pehrson | 6abea75 | 2009-08-08 16:52:06 -0500 | [diff] [blame] | 822 | if (trans_alpha != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 823 | { |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 824 | /* It may not actually be necessary to set png_ptr->trans_alpha here; |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 825 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 826 | * function used to do the allocation. |
| 827 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 828 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 829 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 830 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 831 | /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 832 | png_ptr->trans_alpha = info_ptr->trans_alpha = |
| 833 | (png_bytep)png_malloc(png_ptr, (png_size_t)PNG_MAX_PALETTE_LENGTH); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 834 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 835 | if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 6abea75 | 2009-08-08 16:52:06 -0500 | [diff] [blame] | 836 | png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 837 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 838 | |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 839 | if (trans_color != NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 840 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 841 | int sample_max = (1 << info_ptr->bit_depth); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 842 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 843 | if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 844 | (int)trans_color->gray > sample_max) || |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 845 | (info_ptr->color_type == PNG_COLOR_TYPE_RGB && |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 846 | ((int)trans_color->red > sample_max || |
| 847 | (int)trans_color->green > sample_max || |
| 848 | (int)trans_color->blue > sample_max))) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 849 | png_warning(png_ptr, |
| 850 | "tRNS chunk has out-of-range samples for bit_depth"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 851 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 852 | png_memcpy(&(info_ptr->trans_color), trans_color, |
| 853 | png_sizeof(png_color_16)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 854 | |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 855 | if (num_trans == 0) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 856 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 857 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 858 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 859 | info_ptr->num_trans = (png_uint_16)num_trans; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 860 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 861 | if (num_trans != 0) |
| 862 | { |
| 863 | info_ptr->valid |= PNG_INFO_tRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 864 | info_ptr->free_me |= PNG_FREE_TRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 865 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 866 | } |
| 867 | #endif |
| 868 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 869 | #ifdef PNG_sPLT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 870 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 871 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 872 | png_infop info_ptr, png_const_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 873 | /* |
| 874 | * entries - array of png_sPLT_t structures |
| 875 | * to be added to the list of palettes |
| 876 | * in the info structure. |
| 877 | * nentries - number of palette structures to be |
| 878 | * added. |
| 879 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 880 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 881 | png_sPLT_tp np; |
| 882 | int i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 883 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 884 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 885 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 886 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 887 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, |
| 888 | (info_ptr->splt_palettes_num + nentries) * |
| 889 | (png_size_t)png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 890 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 891 | if (np == NULL) |
| 892 | { |
| 893 | png_warning(png_ptr, "No memory for sPLT palettes"); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 894 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 895 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 896 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 897 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 898 | info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 899 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 900 | png_free(png_ptr, info_ptr->splt_palettes); |
| 901 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 902 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 903 | for (i = 0; i < nentries; i++) |
| 904 | { |
| 905 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 906 | png_const_sPLT_tp from = entries + i; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 907 | png_uint_32 length; |
| 908 | |
| 909 | length = png_strlen(from->name) + 1; |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 910 | to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 911 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 912 | if (to->name == NULL) |
| 913 | { |
| 914 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 915 | "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 916 | continue; |
| 917 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 918 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 919 | png_memcpy(to->name, from->name, length); |
| 920 | to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 921 | (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 922 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 923 | if (to->entries == NULL) |
| 924 | { |
| 925 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 926 | "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 927 | png_free(png_ptr, to->name); |
| 928 | to->name = NULL; |
| 929 | continue; |
| 930 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 931 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 932 | png_memcpy(to->entries, from->entries, |
| 933 | from->nentries * png_sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 934 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 935 | to->nentries = from->nentries; |
| 936 | to->depth = from->depth; |
| 937 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 938 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 939 | info_ptr->splt_palettes = np; |
| 940 | info_ptr->splt_palettes_num += nentries; |
| 941 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 942 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 943 | } |
| 944 | #endif /* PNG_sPLT_SUPPORTED */ |
| 945 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 946 | #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 947 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 948 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 949 | png_infop info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 950 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 951 | png_unknown_chunkp np; |
| 952 | int i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 953 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 954 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 955 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 956 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 957 | np = (png_unknown_chunkp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 958 | (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) * |
| 959 | png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 960 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 961 | if (np == NULL) |
| 962 | { |
| 963 | png_warning(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 964 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 965 | return; |
| 966 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 967 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 968 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 969 | (png_size_t)info_ptr->unknown_chunks_num * |
| 970 | png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 971 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 972 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 973 | info_ptr->unknown_chunks = NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 974 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 975 | for (i = 0; i < num_unknowns; i++) |
| 976 | { |
| 977 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 978 | png_const_unknown_chunkp from = unknowns + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 979 | |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 980 | png_memcpy(to->name, from->name, png_sizeof(from->name)); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 981 | to->name[png_sizeof(to->name)-1] = '\0'; |
| 982 | to->size = from->size; |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 983 | /* Note our location in the read or write sequence */ |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 984 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 985 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 986 | if (from->size == 0) |
| 987 | to->data=NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 988 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 989 | else |
| 990 | { |
| 991 | to->data = (png_bytep)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 992 | (png_size_t)from->size); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 993 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 994 | if (to->data == NULL) |
| 995 | { |
| 996 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 997 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 998 | to->size = 0; |
| 999 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1000 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1001 | else |
| 1002 | png_memcpy(to->data, from->data, from->size); |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | info_ptr->unknown_chunks = np; |
| 1007 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1008 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1009 | } |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1010 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1011 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1012 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1013 | int chunk, int location) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1014 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1015 | if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1016 | info_ptr->unknown_chunks_num) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1017 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1018 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1019 | #endif |
| 1020 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1021 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1022 | #ifdef PNG_MNG_FEATURES_SUPPORTED |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1023 | png_uint_32 PNGAPI |
| 1024 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 1025 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1026 | png_debug(1, "in png_permit_mng_features"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1027 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1028 | if (png_ptr == NULL) |
| 1029 | return (png_uint_32)0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1030 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1031 | png_ptr->mng_features_permitted = |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1032 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1033 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1034 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1035 | } |
| 1036 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1037 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 1038 | #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1039 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1040 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_const_bytep |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1041 | chunk_list, int num_chunks) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1042 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1043 | png_bytep new_list, p; |
| 1044 | int i, old_num_chunks; |
| 1045 | if (png_ptr == NULL) |
| 1046 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1047 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1048 | if (num_chunks == 0) |
| 1049 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1050 | if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1051 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1052 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1053 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1054 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1055 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1056 | if (keep == PNG_HANDLE_CHUNK_ALWAYS) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1057 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1058 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1059 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1060 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1061 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1062 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1063 | } |
| 1064 | if (chunk_list == NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1065 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1066 | old_num_chunks = png_ptr->num_chunk_list; |
| 1067 | new_list=(png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1068 | (png_size_t) |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1069 | (5*(num_chunks + old_num_chunks))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1070 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1071 | if (png_ptr->chunk_list != NULL) |
| 1072 | { |
| 1073 | png_memcpy(new_list, png_ptr->chunk_list, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1074 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1075 | png_free(png_ptr, png_ptr->chunk_list); |
| 1076 | png_ptr->chunk_list=NULL; |
| 1077 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1078 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1079 | png_memcpy(new_list + 5*old_num_chunks, chunk_list, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1080 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1081 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1082 | for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) |
| 1083 | *p=(png_byte)keep; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1084 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1085 | png_ptr->num_chunk_list = old_num_chunks + num_chunks; |
| 1086 | png_ptr->chunk_list = new_list; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1087 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1088 | } |
| 1089 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1090 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1091 | #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1092 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1093 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1094 | png_user_chunk_ptr read_user_chunk_fn) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1095 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1096 | png_debug(1, "in png_set_read_user_chunk_fn"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1097 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1098 | if (png_ptr == NULL) |
| 1099 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 1100 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1101 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1102 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1103 | } |
| 1104 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1105 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1106 | #ifdef PNG_INFO_IMAGE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1107 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1108 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1109 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1110 | png_debug1(1, "in %s storage function", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1111 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1112 | if (png_ptr == NULL || info_ptr == NULL) |
| 1113 | return; |
| 1114 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1115 | if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1116 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1117 | |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1118 | info_ptr->row_pointers = row_pointers; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1119 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1120 | if (row_pointers) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1121 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1122 | } |
| 1123 | #endif |
| 1124 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1125 | void PNGAPI |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1126 | png_set_compression_buffer_size(png_structp png_ptr, png_size_t size) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1127 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1128 | if (png_ptr == NULL) |
| 1129 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1130 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1131 | png_free(png_ptr, png_ptr->zbuf); |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1132 | if (size > ZLIB_IO_MAX) |
| 1133 | { |
| 1134 | png_warning(png_ptr, "Attempt to set buffer size beyond max ignored"); |
| 1135 | png_ptr->zbuf_size = ZLIB_IO_MAX; |
| 1136 | size = ZLIB_IO_MAX; /* must fit */ |
| 1137 | } |
| 1138 | else |
| 1139 | png_ptr->zbuf_size = (uInt)size; |
| 1140 | |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1141 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1142 | /* The following ensures a relatively safe failure if this gets called while |
| 1143 | * the buffer is actually in use. |
| 1144 | */ |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1145 | png_ptr->zstream.next_out = png_ptr->zbuf; |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1146 | png_ptr->zstream.avail_out = 0; |
| 1147 | png_ptr->zstream.avail_in = 0; |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1148 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1149 | |
| 1150 | void PNGAPI |
| 1151 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) |
| 1152 | { |
| 1153 | if (png_ptr && info_ptr) |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1154 | info_ptr->valid &= ~mask; |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1155 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1156 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1157 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1158 | |
| 1159 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 1160 | /* This function was added to libpng 1.2.6 */ |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1161 | void PNGAPI |
| 1162 | png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, |
| 1163 | png_uint_32 user_height_max) |
| 1164 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1165 | /* Images with dimensions larger than these limits will be |
| 1166 | * rejected by png_set_IHDR(). To accept any PNG datastream |
| 1167 | * regardless of dimensions, set both limits to 0x7ffffffL. |
| 1168 | */ |
| 1169 | if (png_ptr == NULL) |
| 1170 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1171 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1172 | png_ptr->user_width_max = user_width_max; |
| 1173 | png_ptr->user_height_max = user_height_max; |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1174 | } |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1175 | |
Glenn Randers-Pehrson | 17ca340 | 2009-11-09 06:51:16 -0600 | [diff] [blame] | 1176 | /* This function was added to libpng 1.4.0 */ |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1177 | void PNGAPI |
| 1178 | png_set_chunk_cache_max (png_structp png_ptr, |
| 1179 | png_uint_32 user_chunk_cache_max) |
| 1180 | { |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1181 | if (png_ptr) |
| 1182 | png_ptr->user_chunk_cache_max = user_chunk_cache_max; |
| 1183 | } |
| 1184 | |
| 1185 | /* This function was added to libpng 1.4.1 */ |
| 1186 | void PNGAPI |
| 1187 | png_set_chunk_malloc_max (png_structp png_ptr, |
| 1188 | png_alloc_size_t user_chunk_malloc_max) |
| 1189 | { |
| 1190 | if (png_ptr) |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1191 | png_ptr->user_chunk_malloc_max = user_chunk_malloc_max; |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1192 | } |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1193 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ |
| 1194 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1195 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1196 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1197 | void PNGAPI |
| 1198 | png_set_benign_errors(png_structp png_ptr, int allowed) |
| 1199 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1200 | png_debug(1, "in png_set_benign_errors"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1201 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1202 | if (allowed) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1203 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1204 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1205 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1206 | png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1207 | } |
| 1208 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 1209 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |