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 | 55e85c2 | 2011-11-04 13:34:48 -0500 | [diff] [blame] | 4 | * Last changed in libpng 1.5.6 [November 3, 2011] |
Glenn Randers-Pehrson | 64b863c | 2011-01-04 09:57:06 -0600 | [diff] [blame] | 5 | * Copyright (c) 1998-2011 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 | 62333ba | 2010-10-23 08:48:51 -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 | 62333ba | 2010-10-23 08:48:51 -0500 | [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 | |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 67 | void PNGFAPI |
| 68 | png_set_cHRM_XYZ_fixed(png_structp png_ptr, png_infop info_ptr, |
| 69 | png_fixed_point int_red_X, png_fixed_point int_red_Y, |
| 70 | png_fixed_point int_red_Z, png_fixed_point int_green_X, |
| 71 | png_fixed_point int_green_Y, png_fixed_point int_green_Z, |
| 72 | png_fixed_point int_blue_X, png_fixed_point int_blue_Y, |
| 73 | png_fixed_point int_blue_Z) |
| 74 | { |
| 75 | png_XYZ XYZ; |
| 76 | png_xy xy; |
| 77 | |
| 78 | png_debug1(1, "in %s storage function", "cHRM XYZ fixed"); |
| 79 | |
| 80 | if (png_ptr == NULL || info_ptr == NULL) |
| 81 | return; |
| 82 | |
| 83 | XYZ.redX = int_red_X; |
| 84 | XYZ.redY = int_red_Y; |
| 85 | XYZ.redZ = int_red_Z; |
| 86 | XYZ.greenX = int_green_X; |
| 87 | XYZ.greenY = int_green_Y; |
| 88 | XYZ.greenZ = int_green_Z; |
| 89 | XYZ.blueX = int_blue_X; |
| 90 | XYZ.blueY = int_blue_Y; |
| 91 | XYZ.blueZ = int_blue_Z; |
| 92 | |
| 93 | if (png_xy_from_XYZ(&xy, XYZ)) |
| 94 | png_error(png_ptr, "XYZ values out of representable range"); |
| 95 | |
| 96 | png_set_cHRM_fixed(png_ptr, info_ptr, xy.whitex, xy.whitey, xy.redx, xy.redy, |
| 97 | xy.greenx, xy.greeny, xy.bluex, xy.bluey); |
| 98 | } |
| 99 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 100 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 101 | void PNGAPI |
| 102 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, |
| 103 | double white_x, double white_y, double red_x, double red_y, |
| 104 | double green_x, double green_y, double blue_x, double blue_y) |
| 105 | { |
| 106 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 107 | png_fixed(png_ptr, white_x, "cHRM White X"), |
| 108 | png_fixed(png_ptr, white_y, "cHRM White Y"), |
| 109 | png_fixed(png_ptr, red_x, "cHRM Red X"), |
| 110 | png_fixed(png_ptr, red_y, "cHRM Red Y"), |
| 111 | png_fixed(png_ptr, green_x, "cHRM Green X"), |
| 112 | png_fixed(png_ptr, green_y, "cHRM Green Y"), |
| 113 | png_fixed(png_ptr, blue_x, "cHRM Blue X"), |
| 114 | png_fixed(png_ptr, blue_y, "cHRM Blue Y")); |
| 115 | } |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 116 | |
| 117 | void PNGAPI |
| 118 | png_set_cHRM_XYZ(png_structp png_ptr, png_infop info_ptr, double red_X, |
| 119 | double red_Y, double red_Z, double green_X, double green_Y, double green_Z, |
| 120 | double blue_X, double blue_Y, double blue_Z) |
| 121 | { |
| 122 | png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, |
| 123 | png_fixed(png_ptr, red_X, "cHRM Red X"), |
| 124 | png_fixed(png_ptr, red_Y, "cHRM Red Y"), |
| 125 | png_fixed(png_ptr, red_Z, "cHRM Red Z"), |
| 126 | png_fixed(png_ptr, green_X, "cHRM Red X"), |
| 127 | png_fixed(png_ptr, green_Y, "cHRM Red Y"), |
| 128 | png_fixed(png_ptr, green_Z, "cHRM Red Z"), |
| 129 | png_fixed(png_ptr, blue_X, "cHRM Red X"), |
| 130 | png_fixed(png_ptr, blue_Y, "cHRM Red Y"), |
| 131 | png_fixed(png_ptr, blue_Z, "cHRM Red Z")); |
| 132 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 133 | # endif /* PNG_FLOATING_POINT_SUPPORTED */ |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 134 | |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 135 | #endif /* PNG_cHRM_SUPPORTED */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 136 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 137 | #ifdef PNG_gAMA_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 138 | void PNGFAPI |
| 139 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point |
John Bowler | 168a433 | 2011-01-16 19:32:22 -0600 | [diff] [blame] | 140 | file_gamma) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 141 | { |
| 142 | png_debug1(1, "in %s storage function", "gAMA"); |
| 143 | |
| 144 | if (png_ptr == NULL || info_ptr == NULL) |
| 145 | return; |
| 146 | |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 147 | /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't |
| 148 | * occur. Since the fixed point representation is assymetrical it is |
| 149 | * possible for 1/gamma to overflow the limit of 21474 and this means the |
| 150 | * gamma value must be at least 5/100000 and hence at most 20000.0. For |
| 151 | * safety the limits here are a little narrower. The values are 0.00016 to |
Glenn Randers-Pehrson | 0bc7977 | 2011-08-11 09:01:57 -0500 | [diff] [blame] | 152 | * 6250.0, which are truly ridiculous gammma values (and will produce |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 153 | * displays that are all black or all white.) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 154 | */ |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 155 | if (file_gamma < 16 || file_gamma > 625000000) |
| 156 | png_warning(png_ptr, "Out of range gamma value ignored"); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 157 | |
| 158 | else |
| 159 | { |
John Bowler | 168a433 | 2011-01-16 19:32:22 -0600 | [diff] [blame] | 160 | info_ptr->gamma = file_gamma; |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 161 | info_ptr->valid |= PNG_INFO_gAMA; |
| 162 | } |
| 163 | } |
| 164 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 165 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
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_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) |
| 168 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 169 | png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 170 | "png_set_gAMA")); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 171 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 172 | # endif |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 173 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 174 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 175 | #ifdef PNG_hIST_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 176 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 177 | 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] | 178 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 179 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 180 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 181 | png_debug1(1, "in %s storage function", "hIST"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 182 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 183 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 184 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 185 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 186 | if (info_ptr->num_palette == 0 || info_ptr->num_palette |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 187 | > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 188 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 189 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 190 | "Invalid palette size, hIST allocation skipped"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 191 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 192 | return; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 193 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 194 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 195 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 196 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 197 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in |
| 198 | * version 1.2.1 |
| 199 | */ |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 200 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 201 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 202 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 203 | if (png_ptr->hist == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 204 | { |
| 205 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); |
| 206 | return; |
| 207 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 208 | |
| 209 | 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] | 210 | png_ptr->hist[i] = hist[i]; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 211 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 212 | info_ptr->hist = png_ptr->hist; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 213 | info_ptr->valid |= PNG_INFO_hIST; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 214 | info_ptr->free_me |= PNG_FREE_HIST; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 215 | } |
| 216 | #endif |
| 217 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 218 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 219 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 220 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 221 | int color_type, int interlace_type, int compression_type, |
| 222 | int filter_type) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 223 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 224 | png_debug1(1, "in %s storage function", "IHDR"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 225 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 226 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 227 | return; |
| 228 | |
| 229 | info_ptr->width = width; |
| 230 | info_ptr->height = height; |
| 231 | info_ptr->bit_depth = (png_byte)bit_depth; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 232 | info_ptr->color_type = (png_byte)color_type; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 233 | info_ptr->compression_type = (png_byte)compression_type; |
| 234 | info_ptr->filter_type = (png_byte)filter_type; |
| 235 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 236 | |
| 237 | png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, |
| 238 | info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, |
| 239 | info_ptr->compression_type, info_ptr->filter_type); |
| 240 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 241 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 242 | info_ptr->channels = 1; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 243 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 244 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 245 | info_ptr->channels = 3; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 246 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 247 | else |
| 248 | info_ptr->channels = 1; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 249 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 250 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 251 | info_ptr->channels++; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 252 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 253 | 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] | 254 | |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 255 | /* Check for potential overflow */ |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 256 | if (width > |
| 257 | (PNG_UINT_32_MAX >> 3) /* 8-byte RRGGBBAA pixels */ |
| 258 | - 48 /* bigrowbuf hack */ |
| 259 | - 1 /* filter byte */ |
| 260 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 261 | - 8) /* extra max_pixel_depth pad */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 262 | info_ptr->rowbytes = 0; |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 263 | else |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 264 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 265 | } |
| 266 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 267 | #ifdef PNG_oFFs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 268 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 269 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 270 | 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] | 271 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 272 | png_debug1(1, "in %s storage function", "oFFs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 273 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 274 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 275 | return; |
| 276 | |
| 277 | info_ptr->x_offset = offset_x; |
| 278 | info_ptr->y_offset = offset_y; |
| 279 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 280 | info_ptr->valid |= PNG_INFO_oFFs; |
| 281 | } |
| 282 | #endif |
| 283 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 284 | #ifdef PNG_pCAL_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 285 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 286 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 287 | png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, |
| 288 | int nparams, png_const_charp units, png_charpp params) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 289 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 290 | png_size_t length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 291 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 292 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 293 | png_debug1(1, "in %s storage function", "pCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 294 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 295 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 296 | return; |
| 297 | |
| 298 | length = png_strlen(purpose) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 299 | png_debug1(3, "allocating purpose for info (%lu bytes)", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 300 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 301 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 302 | /* TODO: validate format of calibration name and unit name */ |
| 303 | |
| 304 | /* Check that the type matches the specification. */ |
| 305 | if (type < 0 || type > 3) |
| 306 | png_error(png_ptr, "Invalid pCAL equation type"); |
| 307 | |
| 308 | /* Validate params[nparams] */ |
| 309 | for (i=0; i<nparams; ++i) |
| 310 | if (!png_check_fp_string(params[i], png_strlen(params[i]))) |
| 311 | png_error(png_ptr, "Invalid format for pCAL parameter"); |
| 312 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 313 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 314 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 315 | if (info_ptr->pcal_purpose == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 316 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 317 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 318 | return; |
| 319 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 320 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 321 | png_memcpy(info_ptr->pcal_purpose, purpose, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 322 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 323 | png_debug(3, "storing X0, X1, type, and nparams in info"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 324 | info_ptr->pcal_X0 = X0; |
| 325 | info_ptr->pcal_X1 = X1; |
| 326 | info_ptr->pcal_type = (png_byte)type; |
| 327 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 328 | |
| 329 | length = png_strlen(units) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 330 | png_debug1(3, "allocating units for info (%lu bytes)", |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 331 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 332 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 333 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 334 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 335 | if (info_ptr->pcal_units == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 336 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 337 | png_warning(png_ptr, "Insufficient memory for pCAL units"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 338 | return; |
| 339 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 340 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 341 | png_memcpy(info_ptr->pcal_units, units, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 342 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 343 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 344 | (png_size_t)((nparams + 1) * png_sizeof(png_charp))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 345 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 346 | if (info_ptr->pcal_params == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 347 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 348 | png_warning(png_ptr, "Insufficient memory for pCAL params"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 349 | return; |
| 350 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 351 | |
Glenn Randers-Pehrson | 0ffb71a | 2009-02-28 06:08:20 -0600 | [diff] [blame] | 352 | 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] | 353 | |
| 354 | for (i = 0; i < nparams; i++) |
| 355 | { |
| 356 | length = png_strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 357 | png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 358 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 359 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 360 | 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] | 361 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 362 | if (info_ptr->pcal_params[i] == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 363 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 364 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); |
| 365 | return; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 366 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 367 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 368 | png_memcpy(info_ptr->pcal_params[i], params[i], length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 372 | info_ptr->free_me |= PNG_FREE_PCAL; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 373 | } |
| 374 | #endif |
| 375 | |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 376 | #ifdef PNG_sCAL_SUPPORTED |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 377 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 378 | 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] | 379 | int unit, png_const_charp swidth, png_const_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 380 | { |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 381 | png_size_t lengthw = 0, lengthh = 0; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 382 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 383 | png_debug1(1, "in %s storage function", "sCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 384 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 385 | if (png_ptr == NULL || info_ptr == NULL) |
| 386 | return; |
| 387 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 388 | /* Double check the unit (should never get here with an invalid |
| 389 | * unit unless this is an API call.) |
| 390 | */ |
| 391 | if (unit != 1 && unit != 2) |
| 392 | png_error(png_ptr, "Invalid sCAL unit"); |
| 393 | |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 394 | if (swidth == NULL || (lengthw = png_strlen(swidth)) == 0 || |
Glenn Randers-Pehrson | b75b241 | 2011-04-16 19:35:05 -0500 | [diff] [blame] | 395 | swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw)) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 396 | png_error(png_ptr, "Invalid sCAL width"); |
| 397 | |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 398 | if (sheight == NULL || (lengthh = png_strlen(sheight)) == 0 || |
Glenn Randers-Pehrson | b75b241 | 2011-04-16 19:35:05 -0500 | [diff] [blame] | 399 | sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh)) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 400 | png_error(png_ptr, "Invalid sCAL height"); |
| 401 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 402 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 403 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 404 | ++lengthw; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 405 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 406 | png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 407 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 408 | 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] | 409 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 410 | if (info_ptr->scal_s_width == NULL) |
| 411 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 412 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 413 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 414 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 415 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 416 | png_memcpy(info_ptr->scal_s_width, swidth, lengthw); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 417 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 418 | ++lengthh; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 419 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 420 | png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 421 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 422 | 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] | 423 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 424 | if (info_ptr->scal_s_height == NULL) |
| 425 | { |
| 426 | png_free (png_ptr, info_ptr->scal_s_width); |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 427 | info_ptr->scal_s_width = NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 428 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 429 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 430 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 431 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 432 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 433 | png_memcpy(info_ptr->scal_s_height, sheight, lengthh); |
| 434 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 435 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 436 | info_ptr->free_me |= PNG_FREE_SCAL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 437 | } |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 438 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 439 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 440 | void PNGAPI |
| 441 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 442 | double height) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 443 | { |
| 444 | png_debug1(1, "in %s storage function", "sCAL"); |
| 445 | |
| 446 | /* Check the arguments. */ |
| 447 | if (width <= 0) |
| 448 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 449 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 450 | else if (height <= 0) |
| 451 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 452 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 453 | else |
| 454 | { |
| 455 | /* Convert 'width' and 'height' to ASCII. */ |
| 456 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 457 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 458 | |
| 459 | png_ascii_from_fp(png_ptr, swidth, sizeof swidth, width, |
| 460 | PNG_sCAL_PRECISION); |
| 461 | png_ascii_from_fp(png_ptr, sheight, sizeof sheight, height, |
| 462 | PNG_sCAL_PRECISION); |
| 463 | |
| 464 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 465 | } |
| 466 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 467 | # endif |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 468 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 469 | # ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 470 | void PNGAPI |
| 471 | png_set_sCAL_fixed(png_structp png_ptr, png_infop info_ptr, int unit, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 472 | png_fixed_point width, png_fixed_point height) |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 473 | { |
| 474 | png_debug1(1, "in %s storage function", "sCAL"); |
| 475 | |
| 476 | /* Check the arguments. */ |
| 477 | if (width <= 0) |
| 478 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 479 | |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 480 | else if (height <= 0) |
| 481 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 482 | |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 483 | else |
| 484 | { |
| 485 | /* Convert 'width' and 'height' to ASCII. */ |
| 486 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 487 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 488 | |
| 489 | png_ascii_from_fixed(png_ptr, swidth, sizeof swidth, width); |
| 490 | png_ascii_from_fixed(png_ptr, sheight, sizeof sheight, height); |
| 491 | |
| 492 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 493 | } |
| 494 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 495 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 496 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 497 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 498 | #ifdef PNG_pHYs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 499 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 500 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 501 | 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] | 502 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 503 | png_debug1(1, "in %s storage function", "pHYs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 504 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 505 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 506 | return; |
| 507 | |
| 508 | info_ptr->x_pixels_per_unit = res_x; |
| 509 | info_ptr->y_pixels_per_unit = res_y; |
| 510 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 511 | info_ptr->valid |= PNG_INFO_pHYs; |
| 512 | } |
| 513 | #endif |
| 514 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 515 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 516 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 517 | png_const_colorp palette, int num_palette) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 518 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 519 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 520 | png_debug1(1, "in %s storage function", "PLTE"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 521 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 522 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 523 | return; |
| 524 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 525 | 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] | 526 | { |
| 527 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 528 | png_error(png_ptr, "Invalid palette length"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 529 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 530 | else |
| 531 | { |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 532 | png_warning(png_ptr, "Invalid palette length"); |
| 533 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 534 | } |
| 535 | } |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 536 | |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 537 | /* 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] | 538 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 539 | * function used to do the allocation. |
| 540 | */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 541 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 542 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 543 | /* 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] | 544 | * of num_palette entries, in case of an invalid PNG file that has |
| 545 | * too-large sample values. |
| 546 | */ |
Glenn Randers-Pehrson | 79134c6 | 2009-02-14 10:32:18 -0600 | [diff] [blame] | 547 | png_ptr->palette = (png_colorp)png_calloc(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 548 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 549 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 550 | 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] | 551 | info_ptr->palette = png_ptr->palette; |
| 552 | 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] | 553 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 554 | info_ptr->free_me |= PNG_FREE_PLTE; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 555 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 556 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 557 | } |
| 558 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 559 | #ifdef PNG_sBIT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 560 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 561 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 562 | png_const_color_8p sig_bit) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 563 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 564 | png_debug1(1, "in %s storage function", "sBIT"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 565 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 566 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 567 | return; |
| 568 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 569 | 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] | 570 | info_ptr->valid |= PNG_INFO_sBIT; |
| 571 | } |
| 572 | #endif |
| 573 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 574 | #ifdef PNG_sRGB_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 575 | void PNGAPI |
Glenn Randers-Pehrson | 8d0bc0f | 2011-01-25 22:15:58 -0600 | [diff] [blame] | 576 | png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int srgb_intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 577 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 578 | png_debug1(1, "in %s storage function", "sRGB"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 579 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 580 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 581 | return; |
| 582 | |
Glenn Randers-Pehrson | 8d0bc0f | 2011-01-25 22:15:58 -0600 | [diff] [blame] | 583 | info_ptr->srgb_intent = (png_byte)srgb_intent; |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 584 | info_ptr->valid |= PNG_INFO_sRGB; |
| 585 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 586 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 587 | void PNGAPI |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 588 | png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | 8d0bc0f | 2011-01-25 22:15:58 -0600 | [diff] [blame] | 589 | int srgb_intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 590 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 591 | png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 592 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 593 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 594 | return; |
| 595 | |
Glenn Randers-Pehrson | 8d0bc0f | 2011-01-25 22:15:58 -0600 | [diff] [blame] | 596 | png_set_sRGB(png_ptr, info_ptr, srgb_intent); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 597 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 598 | # ifdef PNG_gAMA_SUPPORTED |
John Bowler | f70c7d0 | 2011-05-10 22:54:37 -0500 | [diff] [blame] | 599 | png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 600 | # endif |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 601 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 602 | # ifdef PNG_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 85b0237 | 2009-09-24 19:49:13 -0500 | [diff] [blame] | 603 | png_set_cHRM_fixed(png_ptr, info_ptr, |
Glenn Randers-Pehrson | 82980f3 | 2010-06-26 12:31:58 -0500 | [diff] [blame] | 604 | /* color x y */ |
John Bowler | 7515612 | 2011-09-09 17:21:44 -0500 | [diff] [blame] | 605 | /* white */ 31270, 32900, |
| 606 | /* red */ 64000, 33000, |
| 607 | /* green */ 30000, 60000, |
| 608 | /* blue */ 15000, 6000 |
Glenn Randers-Pehrson | 82980f3 | 2010-06-26 12:31:58 -0500 | [diff] [blame] | 609 | ); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 610 | # endif /* cHRM */ |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 611 | } |
Glenn Randers-Pehrson | 02a5e33 | 2008-11-24 22:10:23 -0600 | [diff] [blame] | 612 | #endif /* sRGB */ |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 613 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 614 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 615 | #ifdef PNG_iCCP_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 616 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 617 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 618 | png_const_charp name, int compression_type, |
| 619 | png_const_bytep profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 620 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 621 | png_charp new_iccp_name; |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 622 | png_bytep new_iccp_profile; |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 623 | png_size_t length; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 624 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 625 | png_debug1(1, "in %s storage function", "iCCP"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 626 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 627 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 628 | return; |
| 629 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 630 | length = png_strlen(name)+1; |
| 631 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 632 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 633 | if (new_iccp_name == NULL) |
| 634 | { |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 635 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 636 | return; |
| 637 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 638 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 639 | png_memcpy(new_iccp_name, name, length); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 640 | new_iccp_profile = (png_bytep)png_malloc_warn(png_ptr, proflen); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 641 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 642 | if (new_iccp_profile == NULL) |
| 643 | { |
| 644 | png_free (png_ptr, new_iccp_name); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 645 | png_warning(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 646 | "Insufficient memory to process iCCP profile"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 647 | return; |
| 648 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 649 | |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 650 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); |
| 651 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 652 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 653 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 654 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 655 | info_ptr->iccp_name = new_iccp_name; |
| 656 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 657 | /* 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] | 658 | * does not have to change if we introduce multiple compression types |
| 659 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 660 | info_ptr->iccp_compression = (png_byte)compression_type; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 661 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 662 | info_ptr->valid |= PNG_INFO_iCCP; |
| 663 | } |
| 664 | #endif |
| 665 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 666 | #ifdef PNG_TEXT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 667 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 668 | 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] | 669 | int num_text) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 670 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 671 | int ret; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 672 | 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] | 673 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 674 | if (ret) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 675 | png_error(png_ptr, "Insufficient memory to store text"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | int /* PRIVATE */ |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 679 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, |
| 680 | png_const_textp text_ptr, int num_text) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 681 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 682 | int i; |
| 683 | |
Glenn Randers-Pehrson | bb5cb14 | 2011-09-22 12:41:58 -0500 | [diff] [blame] | 684 | png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" : |
| 685 | (unsigned long)png_ptr->chunk_name); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 686 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 687 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 688 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 689 | |
| 690 | /* Make sure we have enough space in the "text" array in info_struct |
| 691 | * to hold all of the incoming text_ptr objects. |
| 692 | */ |
| 693 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 694 | { |
| 695 | if (info_ptr->text != NULL) |
| 696 | { |
| 697 | png_textp old_text; |
| 698 | int old_max; |
| 699 | |
| 700 | old_max = info_ptr->max_text; |
| 701 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 702 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 703 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 704 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 705 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 706 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 707 | { |
| 708 | png_free(png_ptr, old_text); |
| 709 | return(1); |
| 710 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 711 | |
Glenn Randers-Pehrson | 0f881d6 | 1998-02-07 10:20:57 -0600 | [diff] [blame] | 712 | 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] | 713 | png_sizeof(png_text))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 714 | png_free(png_ptr, old_text); |
| 715 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 716 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 717 | else |
| 718 | { |
| 719 | info_ptr->max_text = num_text + 8; |
| 720 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 721 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 722 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 723 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 724 | return(1); |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 725 | info_ptr->free_me |= PNG_FREE_TEXT; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 726 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 727 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 728 | png_debug1(3, "allocated %d entries for info_ptr->text", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 729 | info_ptr->max_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 730 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 731 | for (i = 0; i < num_text; i++) |
| 732 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 733 | png_size_t text_length, key_len; |
| 734 | png_size_t lang_len, lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 735 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 736 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 737 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 738 | continue; |
| 739 | |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 740 | if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE || |
| 741 | text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST) |
Glenn Randers-Pehrson | e34f80e | 2010-10-13 06:55:30 -0500 | [diff] [blame] | 742 | { |
| 743 | png_warning(png_ptr, "text compression mode is out of range"); |
| 744 | continue; |
| 745 | } |
| 746 | |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 747 | key_len = png_strlen(text_ptr[i].key); |
| 748 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 749 | if (text_ptr[i].compression <= 0) |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 750 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 751 | lang_len = 0; |
| 752 | lang_key_len = 0; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 753 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 754 | |
Glenn Randers-Pehrson | dd78d52 | 2010-03-30 08:34:02 -0500 | [diff] [blame] | 755 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 756 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 757 | { |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 758 | /* Set iTXt data */ |
Glenn Randers-Pehrson | d6ea40a | 2009-11-02 07:32:00 -0600 | [diff] [blame] | 759 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 760 | if (text_ptr[i].lang != NULL) |
| 761 | lang_len = png_strlen(text_ptr[i].lang); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 762 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 763 | else |
| 764 | lang_len = 0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 765 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 766 | if (text_ptr[i].lang_key != NULL) |
| 767 | lang_key_len = png_strlen(text_ptr[i].lang_key); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 768 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 769 | else |
| 770 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 771 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 772 | # else /* PNG_iTXt_SUPPORTED */ |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 773 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 774 | png_warning(png_ptr, "iTXt chunk not supported"); |
| 775 | continue; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 776 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 777 | # endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 778 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 779 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 780 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 781 | text_length = 0; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 782 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 783 | if (text_ptr[i].compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 784 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 785 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 786 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 787 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 788 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 789 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 790 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 791 | else |
| 792 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 793 | text_length = png_strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 794 | textp->compression = text_ptr[i].compression; |
| 795 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 796 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 797 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 798 | (png_size_t) |
| 799 | (key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 800 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 801 | if (textp->key == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 802 | return(1); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 803 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 804 | png_debug2(2, "Allocated %lu bytes at %p in png_set_text", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 805 | (unsigned long)(png_uint_32) |
| 806 | (key_len + lang_len + lang_key_len + text_length + 4), |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 807 | textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 808 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 809 | 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] | 810 | *(textp->key + key_len) = '\0'; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 811 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 812 | if (text_ptr[i].compression > 0) |
| 813 | { |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 814 | textp->lang = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 815 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 816 | *(textp->lang + lang_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 817 | textp->lang_key = textp->lang + lang_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 818 | 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] | 819 | *(textp->lang_key + lang_key_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 820 | textp->text = textp->lang_key + lang_key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 821 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 822 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 823 | else |
| 824 | { |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 825 | textp->lang=NULL; |
| 826 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 827 | textp->text = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 828 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 829 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 830 | if (text_length) |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 831 | png_memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 832 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 833 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 834 | *(textp->text + text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 835 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 836 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 837 | if (textp->compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 838 | { |
| 839 | textp->text_length = 0; |
| 840 | textp->itxt_length = text_length; |
| 841 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 842 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 843 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 844 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 845 | { |
| 846 | textp->text_length = text_length; |
| 847 | textp->itxt_length = 0; |
| 848 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 849 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 850 | info_ptr->num_text++; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 851 | png_debug1(3, "transferred text chunk %d", info_ptr->num_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 852 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 853 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 854 | } |
| 855 | #endif |
| 856 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 857 | #ifdef PNG_tIME_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 858 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 859 | 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] | 860 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 861 | png_debug1(1, "in %s storage function", "tIME"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 862 | |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 863 | if (png_ptr == NULL || info_ptr == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 864 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 865 | return; |
| 866 | |
Glenn Randers-Pehrson | 29fca79 | 2011-11-19 15:08:04 -0600 | [diff] [blame] | 867 | if (mod_time->month == 0 || mod_time->month > 12 || |
| 868 | mod_time->day == 0 || mod_time->day > 31 || |
| 869 | mod_time->hour > 23 || mod_time->minute > 59 || |
| 870 | mod_time->second > 60) |
| 871 | { |
| 872 | png_warning(png_ptr, "Ignoring invalid time value"); |
| 873 | return; |
| 874 | } |
| 875 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 876 | png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 877 | info_ptr->valid |= PNG_INFO_tIME; |
| 878 | } |
| 879 | #endif |
| 880 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 881 | #ifdef PNG_tRNS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 882 | void PNGAPI |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 883 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 884 | 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] | 885 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 886 | png_debug1(1, "in %s storage function", "tRNS"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 887 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 888 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 889 | return; |
| 890 | |
Glenn Randers-Pehrson | 6abea75 | 2009-08-08 16:52:06 -0500 | [diff] [blame] | 891 | if (trans_alpha != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 892 | { |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 893 | /* 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] | 894 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 895 | * function used to do the allocation. |
| 896 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 897 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 898 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 899 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 900 | /* 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] | 901 | png_ptr->trans_alpha = info_ptr->trans_alpha = |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 902 | (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] | 903 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 904 | if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 6abea75 | 2009-08-08 16:52:06 -0500 | [diff] [blame] | 905 | 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] | 906 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 907 | |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 908 | if (trans_color != NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 909 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 910 | int sample_max = (1 << info_ptr->bit_depth); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 911 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 912 | if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 913 | (int)trans_color->gray > sample_max) || |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 914 | (info_ptr->color_type == PNG_COLOR_TYPE_RGB && |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 915 | ((int)trans_color->red > sample_max || |
| 916 | (int)trans_color->green > sample_max || |
| 917 | (int)trans_color->blue > sample_max))) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 918 | png_warning(png_ptr, |
| 919 | "tRNS chunk has out-of-range samples for bit_depth"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 920 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 921 | png_memcpy(&(info_ptr->trans_color), trans_color, |
| 922 | png_sizeof(png_color_16)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 923 | |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 924 | if (num_trans == 0) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 925 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 926 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 927 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 928 | info_ptr->num_trans = (png_uint_16)num_trans; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 929 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 930 | if (num_trans != 0) |
| 931 | { |
| 932 | info_ptr->valid |= PNG_INFO_tRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 933 | info_ptr->free_me |= PNG_FREE_TRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 934 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 935 | } |
| 936 | #endif |
| 937 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 938 | #ifdef PNG_sPLT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 939 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 940 | png_set_sPLT(png_structp png_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 941 | png_infop info_ptr, png_const_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 942 | /* |
| 943 | * entries - array of png_sPLT_t structures |
| 944 | * to be added to the list of palettes |
| 945 | * in the info structure. |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 946 | * |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 947 | * nentries - number of palette structures to be |
| 948 | * added. |
| 949 | */ |
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_sPLT_tp 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) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 955 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 956 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 957 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, |
| 958 | (info_ptr->splt_palettes_num + nentries) * |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 959 | (png_size_t)png_sizeof(png_sPLT_t)); |
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, "No memory for sPLT palettes"); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 964 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 965 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 966 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 967 | png_memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 968 | info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 969 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 970 | png_free(png_ptr, info_ptr->splt_palettes); |
| 971 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 972 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 973 | for (i = 0; i < nentries; i++) |
| 974 | { |
| 975 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 976 | png_const_sPLT_tp from = entries + i; |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 977 | png_size_t length; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 978 | |
| 979 | length = png_strlen(from->name) + 1; |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 980 | to->name = (png_charp)png_malloc_warn(png_ptr, length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 981 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 982 | if (to->name == NULL) |
| 983 | { |
| 984 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 985 | "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 986 | continue; |
| 987 | } |
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 | png_memcpy(to->name, from->name, length); |
| 990 | to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 991 | from->nentries * png_sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 992 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 993 | if (to->entries == NULL) |
| 994 | { |
| 995 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 996 | "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 997 | png_free(png_ptr, to->name); |
| 998 | to->name = NULL; |
| 999 | continue; |
| 1000 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1001 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1002 | png_memcpy(to->entries, from->entries, |
| 1003 | from->nentries * png_sizeof(png_sPLT_entry)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1004 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1005 | to->nentries = from->nentries; |
| 1006 | to->depth = from->depth; |
| 1007 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1008 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1009 | info_ptr->splt_palettes = np; |
| 1010 | info_ptr->splt_palettes_num += nentries; |
| 1011 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1012 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1013 | } |
| 1014 | #endif /* PNG_sPLT_SUPPORTED */ |
| 1015 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 1016 | #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1017 | void PNGAPI |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1018 | png_set_unknown_chunks(png_structp png_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1019 | 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] | 1020 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1021 | png_unknown_chunkp np; |
| 1022 | int i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1023 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1024 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 1025 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1026 | |
John Bowler | 40b2603 | 2011-12-22 08:09:15 -0600 | [diff] [blame^] | 1027 | np = png_voidcast(png_unknown_chunkp, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1028 | (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) * |
John Bowler | 40b2603 | 2011-12-22 08:09:15 -0600 | [diff] [blame^] | 1029 | png_sizeof(png_unknown_chunk))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1030 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1031 | if (np == NULL) |
| 1032 | { |
| 1033 | png_warning(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1034 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1035 | return; |
| 1036 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1037 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1038 | png_memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1039 | (png_size_t)info_ptr->unknown_chunks_num * |
| 1040 | png_sizeof(png_unknown_chunk)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1041 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1042 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1043 | info_ptr->unknown_chunks = NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1044 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1045 | for (i = 0; i < num_unknowns; i++) |
| 1046 | { |
| 1047 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1048 | png_const_unknown_chunkp from = unknowns + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1049 | |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1050 | 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] | 1051 | to->name[png_sizeof(to->name)-1] = '\0'; |
| 1052 | to->size = from->size; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1053 | |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 1054 | /* 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] | 1055 | to->location = (png_byte)(png_ptr->mode & 0xff); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1056 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1057 | if (from->size == 0) |
| 1058 | to->data=NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1059 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1060 | else |
| 1061 | { |
| 1062 | to->data = (png_bytep)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1063 | (png_size_t)from->size); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1064 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1065 | if (to->data == NULL) |
| 1066 | { |
| 1067 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1068 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1069 | to->size = 0; |
| 1070 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1071 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1072 | else |
| 1073 | png_memcpy(to->data, from->data, from->size); |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | info_ptr->unknown_chunks = np; |
| 1078 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1079 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1080 | } |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1081 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1082 | void PNGAPI |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1083 | 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] | 1084 | int chunk, int location) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1085 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1086 | if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1087 | info_ptr->unknown_chunks_num) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1088 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1089 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1090 | #endif |
| 1091 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1092 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1093 | #ifdef PNG_MNG_FEATURES_SUPPORTED |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1094 | png_uint_32 PNGAPI |
| 1095 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) |
| 1096 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1097 | png_debug(1, "in png_permit_mng_features"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1098 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1099 | if (png_ptr == NULL) |
| 1100 | return (png_uint_32)0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1101 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1102 | png_ptr->mng_features_permitted = |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1103 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1104 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1105 | return (png_uint_32)png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1106 | } |
| 1107 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1108 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 1109 | #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1110 | void PNGAPI |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1111 | 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] | 1112 | chunk_list, int num_chunks) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1113 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1114 | png_bytep new_list, p; |
| 1115 | int i, old_num_chunks; |
| 1116 | if (png_ptr == NULL) |
| 1117 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1118 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1119 | if (num_chunks == 0) |
| 1120 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1121 | 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] | 1122 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1123 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1124 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1125 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1126 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1127 | if (keep == PNG_HANDLE_CHUNK_ALWAYS) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1128 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1129 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1130 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1131 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1132 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1133 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1134 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1135 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1136 | if (chunk_list == NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1137 | return; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1138 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1139 | old_num_chunks = png_ptr->num_chunk_list; |
| 1140 | new_list=(png_bytep)png_malloc(png_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1141 | (png_size_t)(5*(num_chunks + old_num_chunks))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1142 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1143 | if (png_ptr->chunk_list != NULL) |
| 1144 | { |
| 1145 | png_memcpy(new_list, png_ptr->chunk_list, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1146 | (png_size_t)(5*old_num_chunks)); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1147 | png_free(png_ptr, png_ptr->chunk_list); |
| 1148 | png_ptr->chunk_list=NULL; |
| 1149 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1150 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1151 | png_memcpy(new_list + 5*old_num_chunks, chunk_list, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1152 | (png_size_t)(5*num_chunks)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1153 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1154 | for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) |
| 1155 | *p=(png_byte)keep; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1156 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1157 | png_ptr->num_chunk_list = old_num_chunks + num_chunks; |
| 1158 | png_ptr->chunk_list = new_list; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1159 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1160 | } |
| 1161 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1162 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1163 | #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1164 | void PNGAPI |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1165 | 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] | 1166 | png_user_chunk_ptr read_user_chunk_fn) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1167 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1168 | png_debug(1, "in png_set_read_user_chunk_fn"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1169 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1170 | if (png_ptr == NULL) |
| 1171 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 1172 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1173 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1174 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1175 | } |
| 1176 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1177 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1178 | #ifdef PNG_INFO_IMAGE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1179 | void PNGAPI |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1180 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) |
| 1181 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1182 | png_debug1(1, "in %s storage function", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1183 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1184 | if (png_ptr == NULL || info_ptr == NULL) |
| 1185 | return; |
| 1186 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1187 | if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1188 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1189 | |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1190 | info_ptr->row_pointers = row_pointers; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1191 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1192 | if (row_pointers) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1193 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1194 | } |
| 1195 | #endif |
| 1196 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1197 | void PNGAPI |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1198 | 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] | 1199 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1200 | if (png_ptr == NULL) |
| 1201 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1202 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1203 | png_free(png_ptr, png_ptr->zbuf); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1204 | |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1205 | if (size > ZLIB_IO_MAX) |
| 1206 | { |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1207 | png_warning(png_ptr, "Attempt to set buffer size beyond max ignored"); |
| 1208 | png_ptr->zbuf_size = ZLIB_IO_MAX; |
| 1209 | size = ZLIB_IO_MAX; /* must fit */ |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1210 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1211 | |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1212 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1213 | png_ptr->zbuf_size = (uInt)size; |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1214 | |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1215 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1216 | |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1217 | /* The following ensures a relatively safe failure if this gets called while |
| 1218 | * the buffer is actually in use. |
| 1219 | */ |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1220 | png_ptr->zstream.next_out = png_ptr->zbuf; |
Glenn Randers-Pehrson | bcb3aac | 2010-09-10 22:05:27 -0500 | [diff] [blame] | 1221 | png_ptr->zstream.avail_out = 0; |
| 1222 | png_ptr->zstream.avail_in = 0; |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1223 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1224 | |
| 1225 | void PNGAPI |
John Bowler | 40b2603 | 2011-12-22 08:09:15 -0600 | [diff] [blame^] | 1226 | png_set_invalid(png_const_structp png_ptr, png_infop info_ptr, int mask) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1227 | { |
| 1228 | if (png_ptr && info_ptr) |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1229 | info_ptr->valid &= ~mask; |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1230 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1231 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1232 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1233 | |
| 1234 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 1235 | /* This function was added to libpng 1.2.6 */ |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1236 | void PNGAPI |
| 1237 | png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, |
| 1238 | png_uint_32 user_height_max) |
| 1239 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1240 | /* Images with dimensions larger than these limits will be |
| 1241 | * rejected by png_set_IHDR(). To accept any PNG datastream |
| 1242 | * regardless of dimensions, set both limits to 0x7ffffffL. |
| 1243 | */ |
| 1244 | if (png_ptr == NULL) |
| 1245 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1246 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1247 | png_ptr->user_width_max = user_width_max; |
| 1248 | png_ptr->user_height_max = user_height_max; |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1249 | } |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1250 | |
Glenn Randers-Pehrson | 17ca340 | 2009-11-09 06:51:16 -0600 | [diff] [blame] | 1251 | /* This function was added to libpng 1.4.0 */ |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1252 | void PNGAPI |
| 1253 | png_set_chunk_cache_max (png_structp png_ptr, |
| 1254 | png_uint_32 user_chunk_cache_max) |
| 1255 | { |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1256 | if (png_ptr) |
| 1257 | png_ptr->user_chunk_cache_max = user_chunk_cache_max; |
| 1258 | } |
| 1259 | |
| 1260 | /* This function was added to libpng 1.4.1 */ |
| 1261 | void PNGAPI |
| 1262 | png_set_chunk_malloc_max (png_structp png_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1263 | png_alloc_size_t user_chunk_malloc_max) |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1264 | { |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1265 | if (png_ptr) |
| 1266 | png_ptr->user_chunk_malloc_max = user_chunk_malloc_max; |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1267 | } |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1268 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ |
| 1269 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1270 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1271 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1272 | void PNGAPI |
| 1273 | png_set_benign_errors(png_structp png_ptr, int allowed) |
| 1274 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1275 | png_debug(1, "in png_set_benign_errors"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1276 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1277 | if (allowed) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1278 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1279 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1280 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1281 | png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1282 | } |
| 1283 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 1284 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |