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 | 67ee8ce | 2011-12-22 08:21:00 -0600 | [diff] [blame] | 4 | * Last changed in libpng 1.6.0 [(PENDING RELEASE)] |
Glenn Randers-Pehrson | 1531bd6 | 2012-01-01 14:45:04 -0600 | [diff] [blame] | 5 | * Copyright (c) 1998-2012 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 |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 25 | png_set_bKGD(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 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 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 30 | if (png_ptr == NULL || info_ptr == NULL || background == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 31 | return; |
| 32 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 33 | info_ptr->background = *background; |
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 |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 40 | png_set_cHRM_fixed(png_const_structrp png_ptr, png_inforp 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 | { |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 45 | png_xy xy; |
| 46 | |
Glenn Randers-Pehrson | d6d8075 | 2008-12-02 09:49:43 -0600 | [diff] [blame] | 47 | png_debug1(1, "in %s storage function", "cHRM fixed"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 48 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 49 | if (png_ptr == NULL || info_ptr == NULL) |
| 50 | return; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 51 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 52 | xy.redx = red_x; |
| 53 | xy.redy = red_y; |
| 54 | xy.greenx = green_x; |
| 55 | xy.greeny = green_y; |
| 56 | xy.bluex = blue_x; |
| 57 | xy.bluey = blue_y; |
| 58 | xy.whitex = white_x; |
| 59 | xy.whitey = white_y; |
| 60 | |
| 61 | if (png_colorspace_set_chromaticities(png_ptr, &info_ptr->colorspace, &xy, |
| 62 | 2/* override with app values*/)) |
| 63 | info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; |
| 64 | |
| 65 | png_colorspace_sync_info(png_ptr, info_ptr); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 66 | } |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 67 | |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 68 | void PNGFAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 69 | png_set_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_inforp info_ptr, |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 70 | png_fixed_point int_red_X, png_fixed_point int_red_Y, |
| 71 | png_fixed_point int_red_Z, png_fixed_point int_green_X, |
| 72 | png_fixed_point int_green_Y, png_fixed_point int_green_Z, |
| 73 | png_fixed_point int_blue_X, png_fixed_point int_blue_Y, |
| 74 | png_fixed_point int_blue_Z) |
| 75 | { |
| 76 | png_XYZ XYZ; |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 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 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 93 | if (png_colorspace_set_endpoints(png_ptr, &info_ptr->colorspace, &XYZ, 2)) |
| 94 | info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 95 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 96 | png_colorspace_sync_info(png_ptr, info_ptr); |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 97 | } |
| 98 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 99 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 100 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 101 | png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 102 | double white_x, double white_y, double red_x, double red_y, |
| 103 | double green_x, double green_y, double blue_x, double blue_y) |
| 104 | { |
| 105 | png_set_cHRM_fixed(png_ptr, info_ptr, |
| 106 | png_fixed(png_ptr, white_x, "cHRM White X"), |
| 107 | png_fixed(png_ptr, white_y, "cHRM White Y"), |
| 108 | png_fixed(png_ptr, red_x, "cHRM Red X"), |
| 109 | png_fixed(png_ptr, red_y, "cHRM Red Y"), |
| 110 | png_fixed(png_ptr, green_x, "cHRM Green X"), |
| 111 | png_fixed(png_ptr, green_y, "cHRM Green Y"), |
| 112 | png_fixed(png_ptr, blue_x, "cHRM Blue X"), |
| 113 | png_fixed(png_ptr, blue_y, "cHRM Blue Y")); |
| 114 | } |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 115 | |
| 116 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 117 | png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X, |
John Bowler | 736f40f | 2011-08-25 16:19:44 -0500 | [diff] [blame] | 118 | double red_Y, double red_Z, double green_X, double green_Y, double green_Z, |
| 119 | double blue_X, double blue_Y, double blue_Z) |
| 120 | { |
| 121 | png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, |
| 122 | png_fixed(png_ptr, red_X, "cHRM Red X"), |
| 123 | png_fixed(png_ptr, red_Y, "cHRM Red Y"), |
| 124 | png_fixed(png_ptr, red_Z, "cHRM Red Z"), |
| 125 | png_fixed(png_ptr, green_X, "cHRM Red X"), |
| 126 | png_fixed(png_ptr, green_Y, "cHRM Red Y"), |
| 127 | png_fixed(png_ptr, green_Z, "cHRM Red Z"), |
| 128 | png_fixed(png_ptr, blue_X, "cHRM Red X"), |
| 129 | png_fixed(png_ptr, blue_Y, "cHRM Red Y"), |
| 130 | png_fixed(png_ptr, blue_Z, "cHRM Red Z")); |
| 131 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 132 | # endif /* PNG_FLOATING_POINT_SUPPORTED */ |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 133 | |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 134 | #endif /* PNG_cHRM_SUPPORTED */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 135 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 136 | #ifdef PNG_gAMA_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 137 | void PNGFAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 138 | png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr, |
| 139 | png_fixed_point file_gamma) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 140 | { |
| 141 | png_debug1(1, "in %s storage function", "gAMA"); |
| 142 | |
| 143 | if (png_ptr == NULL || info_ptr == NULL) |
| 144 | return; |
| 145 | |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 146 | /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't |
| 147 | * occur. Since the fixed point representation is assymetrical it is |
| 148 | * possible for 1/gamma to overflow the limit of 21474 and this means the |
| 149 | * gamma value must be at least 5/100000 and hence at most 20000.0. For |
| 150 | * safety the limits here are a little narrower. The values are 0.00016 to |
Glenn Randers-Pehrson | 8f4d672 | 2012-05-23 12:30:59 -0500 | [diff] [blame] | 151 | * 6250.0, which are truly ridiculous gamma values (and will produce |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 152 | * displays that are all black or all white.) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 153 | */ |
John Bowler | d2f0bc2 | 2011-06-11 06:42:06 -0500 | [diff] [blame] | 154 | if (file_gamma < 16 || file_gamma > 625000000) |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 155 | png_app_error(png_ptr, "Out of range gamma value ignored"); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 156 | |
| 157 | else |
| 158 | { |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 159 | if (png_colorspace_set_gamma(png_ptr, &info_ptr->colorspace, file_gamma, |
| 160 | 2/* overrided with app value */)) |
| 161 | info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_gAMA; |
| 162 | |
| 163 | png_colorspace_sync_info(png_ptr, info_ptr); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 164 | } |
| 165 | } |
| 166 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 167 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 168 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 169 | png_set_gAMA(png_const_structrp png_ptr, png_inforp info_ptr, double file_gamma) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 170 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 171 | 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] | 172 | "png_set_gAMA")); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 173 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 174 | # endif |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 175 | #endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 176 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 177 | #ifdef PNG_hIST_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 178 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 179 | png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr, |
| 180 | png_const_uint_16p hist) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 181 | { |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 182 | int i; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 183 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 184 | png_debug1(1, "in %s storage function", "hIST"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 185 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 186 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 187 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 188 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 189 | if (info_ptr->num_palette == 0 || info_ptr->num_palette |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 190 | > PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 191 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 192 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 193 | "Invalid palette size, hIST allocation skipped"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 194 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 195 | return; |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 196 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 197 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 198 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 199 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 200 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in |
| 201 | * version 1.2.1 |
| 202 | */ |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 203 | info_ptr->hist = png_voidcast(png_uint_16p, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 204 | PNG_MAX_PALETTE_LENGTH * (sizeof (png_uint_16)))); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 205 | |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 206 | if (info_ptr->hist == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 207 | { |
| 208 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); |
| 209 | return; |
| 210 | } |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 211 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 212 | info_ptr->free_me |= PNG_FREE_HIST; |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 213 | |
| 214 | for (i = 0; i < info_ptr->num_palette; i++) |
| 215 | info_ptr->hist[i] = hist[i]; |
| 216 | |
| 217 | info_ptr->valid |= PNG_INFO_hIST; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 218 | } |
| 219 | #endif |
| 220 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 221 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 222 | png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 223 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 224 | int color_type, int interlace_type, int compression_type, |
| 225 | int filter_type) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 226 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 227 | png_debug1(1, "in %s storage function", "IHDR"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 228 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 229 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 230 | return; |
| 231 | |
| 232 | info_ptr->width = width; |
| 233 | info_ptr->height = height; |
| 234 | info_ptr->bit_depth = (png_byte)bit_depth; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 235 | info_ptr->color_type = (png_byte)color_type; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 236 | info_ptr->compression_type = (png_byte)compression_type; |
| 237 | info_ptr->filter_type = (png_byte)filter_type; |
| 238 | info_ptr->interlace_type = (png_byte)interlace_type; |
Glenn Randers-Pehrson | b35a745 | 2009-09-30 23:12:13 -0500 | [diff] [blame] | 239 | |
| 240 | png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, |
| 241 | info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, |
| 242 | info_ptr->compression_type, info_ptr->filter_type); |
| 243 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 244 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
| 245 | info_ptr->channels = 1; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 246 | |
Glenn Randers-Pehrson | 25d8224 | 2002-05-01 11:51:26 -0500 | [diff] [blame] | 247 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 248 | info_ptr->channels = 3; |
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 | else |
| 251 | info_ptr->channels = 1; |
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 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) |
| 254 | info_ptr->channels++; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 255 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 256 | 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] | 257 | |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 258 | /* Check for potential overflow */ |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 259 | if (width > |
| 260 | (PNG_UINT_32_MAX >> 3) /* 8-byte RRGGBBAA pixels */ |
| 261 | - 48 /* bigrowbuf hack */ |
| 262 | - 1 /* filter byte */ |
| 263 | - 7*8 /* rounding of width to multiple of 8 pixels */ |
| 264 | - 8) /* extra max_pixel_depth pad */ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 265 | info_ptr->rowbytes = 0; |
Glenn Randers-Pehrson | 896239b | 1998-04-21 15:03:57 -0500 | [diff] [blame] | 266 | else |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 267 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 268 | } |
| 269 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 270 | #ifdef PNG_oFFs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 271 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 272 | png_set_oFFs(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 273 | 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] | 274 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 275 | png_debug1(1, "in %s storage function", "oFFs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 276 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 277 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 278 | return; |
| 279 | |
| 280 | info_ptr->x_offset = offset_x; |
| 281 | info_ptr->y_offset = offset_y; |
| 282 | info_ptr->offset_unit_type = (png_byte)unit_type; |
| 283 | info_ptr->valid |= PNG_INFO_oFFs; |
| 284 | } |
| 285 | #endif |
| 286 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 287 | #ifdef PNG_pCAL_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 288 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 289 | png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 290 | png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, |
| 291 | int nparams, png_const_charp units, png_charpp params) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 292 | { |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 293 | png_size_t length; |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 294 | int i; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 295 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 296 | png_debug1(1, "in %s storage function", "pCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 297 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 298 | if (png_ptr == NULL || info_ptr == NULL || purpose == NULL || units == NULL |
| 299 | || (nparams > 0 && params == NULL)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 300 | return; |
| 301 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 302 | length = strlen(purpose) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 303 | png_debug1(3, "allocating purpose for info (%lu bytes)", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 304 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 305 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 306 | /* TODO: validate format of calibration name and unit name */ |
| 307 | |
| 308 | /* Check that the type matches the specification. */ |
| 309 | if (type < 0 || type > 3) |
| 310 | png_error(png_ptr, "Invalid pCAL equation type"); |
| 311 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 312 | if (nparams < 0 || nparams > 255) |
| 313 | png_error(png_ptr, "Invalid pCAL parameter count"); |
| 314 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 315 | /* Validate params[nparams] */ |
| 316 | for (i=0; i<nparams; ++i) |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 317 | if (params[i] == NULL || |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 318 | !png_check_fp_string(params[i], strlen(params[i]))) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 319 | png_error(png_ptr, "Invalid format for pCAL parameter"); |
| 320 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 321 | info_ptr->pcal_purpose = png_voidcast(png_charp, |
| 322 | png_malloc_warn(png_ptr, length)); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 323 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 324 | if (info_ptr->pcal_purpose == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 325 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 326 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 327 | return; |
| 328 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 329 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 330 | memcpy(info_ptr->pcal_purpose, purpose, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 331 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 332 | png_debug(3, "storing X0, X1, type, and nparams in info"); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 333 | info_ptr->pcal_X0 = X0; |
| 334 | info_ptr->pcal_X1 = X1; |
| 335 | info_ptr->pcal_type = (png_byte)type; |
| 336 | info_ptr->pcal_nparams = (png_byte)nparams; |
| 337 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 338 | length = strlen(units) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 339 | png_debug1(3, "allocating units for info (%lu bytes)", |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 340 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 341 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 342 | info_ptr->pcal_units = png_voidcast(png_charp, |
| 343 | png_malloc_warn(png_ptr, length)); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 344 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 345 | if (info_ptr->pcal_units == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 346 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 347 | png_warning(png_ptr, "Insufficient memory for pCAL units"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 348 | return; |
| 349 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 350 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 351 | memcpy(info_ptr->pcal_units, units, length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 352 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 353 | info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 354 | (png_size_t)((nparams + 1) * (sizeof (png_charp))))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 355 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 356 | if (info_ptr->pcal_params == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 357 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 358 | png_warning(png_ptr, "Insufficient memory for pCAL params"); |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 359 | return; |
| 360 | } |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 361 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 362 | memset(info_ptr->pcal_params, 0, (nparams + 1) * (sizeof (png_charp))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 363 | |
| 364 | for (i = 0; i < nparams; i++) |
| 365 | { |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 366 | length = strlen(params[i]) + 1; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 367 | png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 368 | (unsigned long)length); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 369 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 370 | 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] | 371 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 372 | if (info_ptr->pcal_params[i] == NULL) |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 373 | { |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 374 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); |
| 375 | return; |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 376 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 377 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 378 | memcpy(info_ptr->pcal_params[i], params[i], length); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | info_ptr->valid |= PNG_INFO_pCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 382 | info_ptr->free_me |= PNG_FREE_PCAL; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 383 | } |
| 384 | #endif |
| 385 | |
Glenn Randers-Pehrson | a272d8f | 2010-06-25 21:45:31 -0500 | [diff] [blame] | 386 | #ifdef PNG_sCAL_SUPPORTED |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 387 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 388 | png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 389 | int unit, png_const_charp swidth, png_const_charp sheight) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 390 | { |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 391 | png_size_t lengthw = 0, lengthh = 0; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 392 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 393 | png_debug1(1, "in %s storage function", "sCAL"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 394 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 395 | if (png_ptr == NULL || info_ptr == NULL) |
| 396 | return; |
| 397 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 398 | /* Double check the unit (should never get here with an invalid |
| 399 | * unit unless this is an API call.) |
| 400 | */ |
| 401 | if (unit != 1 && unit != 2) |
| 402 | png_error(png_ptr, "Invalid sCAL unit"); |
| 403 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 404 | if (swidth == NULL || (lengthw = strlen(swidth)) == 0 || |
Glenn Randers-Pehrson | b75b241 | 2011-04-16 19:35:05 -0500 | [diff] [blame] | 405 | swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw)) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 406 | png_error(png_ptr, "Invalid sCAL width"); |
| 407 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 408 | if (sheight == NULL || (lengthh = strlen(sheight)) == 0 || |
Glenn Randers-Pehrson | b75b241 | 2011-04-16 19:35:05 -0500 | [diff] [blame] | 409 | sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh)) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 410 | png_error(png_ptr, "Invalid sCAL height"); |
| 411 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 412 | info_ptr->scal_unit = (png_byte)unit; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 413 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 414 | ++lengthw; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 415 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 416 | 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] | 417 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 418 | info_ptr->scal_s_width = png_voidcast(png_charp, |
| 419 | png_malloc_warn(png_ptr, lengthw)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 420 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 421 | if (info_ptr->scal_s_width == NULL) |
| 422 | { |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 423 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 424 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 425 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 426 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 427 | memcpy(info_ptr->scal_s_width, swidth, lengthw); |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 428 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 429 | ++lengthh; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 430 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 431 | 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] | 432 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 433 | info_ptr->scal_s_height = png_voidcast(png_charp, |
| 434 | png_malloc_warn(png_ptr, lengthh)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 435 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 436 | if (info_ptr->scal_s_height == NULL) |
| 437 | { |
| 438 | png_free (png_ptr, info_ptr->scal_s_width); |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 439 | info_ptr->scal_s_width = NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 440 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 441 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 442 | return; |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 443 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 444 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 445 | memcpy(info_ptr->scal_s_height, sheight, lengthh); |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 446 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 447 | info_ptr->valid |= PNG_INFO_sCAL; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 448 | info_ptr->free_me |= PNG_FREE_SCAL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 449 | } |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 450 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 451 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 452 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 453 | png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit, |
| 454 | double width, double height) |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 455 | { |
| 456 | png_debug1(1, "in %s storage function", "sCAL"); |
| 457 | |
| 458 | /* Check the arguments. */ |
| 459 | if (width <= 0) |
| 460 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 461 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 462 | else if (height <= 0) |
| 463 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 464 | |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 465 | else |
| 466 | { |
| 467 | /* Convert 'width' and 'height' to ASCII. */ |
| 468 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 469 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 470 | |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 471 | png_ascii_from_fp(png_ptr, swidth, (sizeof swidth), width, |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 472 | PNG_sCAL_PRECISION); |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 473 | png_ascii_from_fp(png_ptr, sheight, (sizeof sheight), height, |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 474 | PNG_sCAL_PRECISION); |
| 475 | |
| 476 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 477 | } |
| 478 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 479 | # endif |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 480 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 481 | # ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 482 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 483 | png_set_sCAL_fixed(png_const_structrp png_ptr, png_inforp info_ptr, int unit, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 484 | png_fixed_point width, png_fixed_point height) |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 485 | { |
| 486 | png_debug1(1, "in %s storage function", "sCAL"); |
| 487 | |
| 488 | /* Check the arguments. */ |
| 489 | if (width <= 0) |
| 490 | png_warning(png_ptr, "Invalid sCAL width ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 491 | |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 492 | else if (height <= 0) |
| 493 | png_warning(png_ptr, "Invalid sCAL height ignored"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 494 | |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 495 | else |
| 496 | { |
| 497 | /* Convert 'width' and 'height' to ASCII. */ |
| 498 | char swidth[PNG_sCAL_MAX_DIGITS+1]; |
| 499 | char sheight[PNG_sCAL_MAX_DIGITS+1]; |
| 500 | |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 501 | png_ascii_from_fixed(png_ptr, swidth, (sizeof swidth), width); |
| 502 | png_ascii_from_fixed(png_ptr, sheight, (sizeof sheight), height); |
Glenn Randers-Pehrson | 4009a76 | 2010-07-31 06:34:36 -0500 | [diff] [blame] | 503 | |
| 504 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); |
| 505 | } |
| 506 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 507 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 508 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 509 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 510 | #ifdef PNG_pHYs_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 511 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 512 | png_set_pHYs(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 513 | 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] | 514 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 515 | png_debug1(1, "in %s storage function", "pHYs"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 516 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 517 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 518 | return; |
| 519 | |
| 520 | info_ptr->x_pixels_per_unit = res_x; |
| 521 | info_ptr->y_pixels_per_unit = res_y; |
| 522 | info_ptr->phys_unit_type = (png_byte)unit_type; |
| 523 | info_ptr->valid |= PNG_INFO_pHYs; |
| 524 | } |
| 525 | #endif |
| 526 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 527 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 528 | png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 529 | png_const_colorp palette, int num_palette) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 530 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 531 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 532 | png_debug1(1, "in %s storage function", "PLTE"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 533 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 534 | if (png_ptr == NULL || info_ptr == NULL || palette == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 535 | return; |
| 536 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 537 | 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] | 538 | { |
| 539 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 540 | png_error(png_ptr, "Invalid palette length"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 541 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 542 | else |
| 543 | { |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 544 | png_warning(png_ptr, "Invalid palette length"); |
| 545 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 546 | } |
| 547 | } |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 548 | |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 549 | /* 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] | 550 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 551 | * function used to do the allocation. |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 552 | * |
| 553 | * 1.6.0: the above statement appears to be incorrect; something has to set |
| 554 | * the palette inside png_struct on read. |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 555 | */ |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 556 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 557 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 558 | /* 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] | 559 | * of num_palette entries, in case of an invalid PNG file that has |
| 560 | * too-large sample values. |
| 561 | */ |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 562 | png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 563 | PNG_MAX_PALETTE_LENGTH * (sizeof (png_color)))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 564 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 565 | memcpy(png_ptr->palette, palette, num_palette * (sizeof (png_color))); |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 566 | info_ptr->palette = png_ptr->palette; |
| 567 | 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] | 568 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 569 | info_ptr->free_me |= PNG_FREE_PLTE; |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 570 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 571 | info_ptr->valid |= PNG_INFO_PLTE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 572 | } |
| 573 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 574 | #ifdef PNG_sBIT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 575 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 576 | png_set_sBIT(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 577 | png_const_color_8p sig_bit) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 578 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 579 | png_debug1(1, "in %s storage function", "sBIT"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 580 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 581 | if (png_ptr == NULL || info_ptr == NULL || sig_bit == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 582 | return; |
| 583 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 584 | info_ptr->sig_bit = *sig_bit; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 585 | info_ptr->valid |= PNG_INFO_sBIT; |
| 586 | } |
| 587 | #endif |
| 588 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 589 | #ifdef PNG_sRGB_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 590 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 591 | png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 592 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 593 | png_debug1(1, "in %s storage function", "sRGB"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 594 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 595 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 596 | return; |
| 597 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 598 | (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent, |
| 599 | 2/* app value overrides*/); |
| 600 | |
| 601 | png_colorspace_sync_info(png_ptr, info_ptr); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 602 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 603 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 604 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 605 | png_set_sRGB_gAMA_and_cHRM(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | 8d0bc0f | 2011-01-25 22:15:58 -0600 | [diff] [blame] | 606 | int srgb_intent) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 607 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 608 | png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 609 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 610 | if (png_ptr == NULL || info_ptr == NULL) |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 611 | return; |
| 612 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 613 | if (png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent, |
| 614 | 2/* app value overrides*/)) |
| 615 | { |
| 616 | /* And cause the gAMA and cHRM to be written too */ |
| 617 | info_ptr->colorspace.flags |= |
| 618 | PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM; |
| 619 | } |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 620 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 621 | png_colorspace_sync_info(png_ptr, info_ptr); |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 622 | } |
Glenn Randers-Pehrson | 02a5e33 | 2008-11-24 22:10:23 -0600 | [diff] [blame] | 623 | #endif /* sRGB */ |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 624 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 625 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 626 | #ifdef PNG_iCCP_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 627 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 628 | png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 629 | png_const_charp name, int compression_type, |
| 630 | png_const_bytep profile, png_uint_32 proflen) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 631 | { |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 632 | png_charp new_iccp_name; |
Glenn Randers-Pehrson | 31aee0d | 2010-07-29 17:39:14 -0500 | [diff] [blame] | 633 | png_bytep new_iccp_profile; |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 634 | png_size_t length; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 635 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 636 | png_debug1(1, "in %s storage function", "iCCP"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 637 | |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 638 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) |
| 639 | return; |
| 640 | |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 641 | if (compression_type != PNG_COMPRESSION_TYPE_BASE) |
| 642 | png_app_error(png_ptr, "Invalid iCCP compression method"); |
| 643 | |
| 644 | /* Set the colorspace first because this validates the profile; do not |
| 645 | * override previously set app cHRM or gAMA here (because likely as not the |
| 646 | * application knows better than libpng what the correct values are.) |
| 647 | */ |
| 648 | { |
| 649 | int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name, |
| 650 | proflen, profile, 0/* do *not* override the app cHRM or gAMA */); |
| 651 | |
| 652 | png_colorspace_sync_info(png_ptr, info_ptr); |
| 653 | |
| 654 | /* Don't do any of the copying if the profile was bad, or inconsistent. */ |
| 655 | if (!result) |
| 656 | return; |
| 657 | |
| 658 | /* But do write the gAMA and cHRM chunks from the profile. */ |
| 659 | info_ptr->colorspace.flags |= |
| 660 | PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM; |
| 661 | } |
| 662 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 663 | length = strlen(name)+1; |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 664 | new_iccp_name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length)); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 665 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 666 | if (new_iccp_name == NULL) |
| 667 | { |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 668 | png_benign_error(png_ptr, "Insufficient memory to process iCCP chunk"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 669 | return; |
| 670 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 671 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 672 | memcpy(new_iccp_name, name, length); |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 673 | new_iccp_profile = png_voidcast(png_bytep, |
| 674 | png_malloc_warn(png_ptr, proflen)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 675 | |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 676 | if (new_iccp_profile == NULL) |
| 677 | { |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 678 | png_free(png_ptr, new_iccp_name); |
| 679 | png_benign_error(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 680 | "Insufficient memory to process iCCP profile"); |
Glenn Randers-Pehrson | 5fea36f | 2004-07-28 08:20:44 -0500 | [diff] [blame] | 681 | return; |
| 682 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 683 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 684 | memcpy(new_iccp_profile, profile, proflen); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 685 | |
Glenn Randers-Pehrson | 38e6e77 | 2000-04-09 19:06:13 -0500 | [diff] [blame] | 686 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 687 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 688 | info_ptr->iccp_proflen = proflen; |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 689 | info_ptr->iccp_name = new_iccp_name; |
| 690 | info_ptr->iccp_profile = new_iccp_profile; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 691 | info_ptr->free_me |= PNG_FREE_ICCP; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 692 | info_ptr->valid |= PNG_INFO_iCCP; |
| 693 | } |
| 694 | #endif |
| 695 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 696 | #ifdef PNG_TEXT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 697 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 698 | png_set_text(png_const_structrp png_ptr, png_inforp info_ptr, |
| 699 | png_const_textp text_ptr, int num_text) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 700 | { |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 701 | int ret; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 702 | 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] | 703 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 704 | if (ret) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 705 | png_error(png_ptr, "Insufficient memory to store text"); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 706 | } |
| 707 | |
| 708 | int /* PRIVATE */ |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 709 | png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 710 | png_const_textp text_ptr, int num_text) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 711 | { |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 712 | int i; |
| 713 | |
Glenn Randers-Pehrson | bb5cb14 | 2011-09-22 12:41:58 -0500 | [diff] [blame] | 714 | png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" : |
| 715 | (unsigned long)png_ptr->chunk_name); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 716 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 717 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 718 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 719 | |
| 720 | /* Make sure we have enough space in the "text" array in info_struct |
| 721 | * to hold all of the incoming text_ptr objects. |
| 722 | */ |
| 723 | if (info_ptr->num_text + num_text > info_ptr->max_text) |
| 724 | { |
Glenn Randers-Pehrson | 96027d9 | 2012-03-29 06:15:55 -0500 | [diff] [blame] | 725 | int old_max_text = info_ptr->max_text; |
| 726 | int old_num_text = info_ptr->num_text; |
| 727 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 728 | if (info_ptr->text != NULL) |
| 729 | { |
| 730 | png_textp old_text; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 731 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 732 | info_ptr->max_text = info_ptr->num_text + num_text + 8; |
| 733 | old_text = info_ptr->text; |
Glenn Randers-Pehrson | 96027d9 | 2012-03-29 06:15:55 -0500 | [diff] [blame] | 734 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 735 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 736 | (png_size_t)(info_ptr->max_text * (sizeof (png_text)))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 737 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 738 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 739 | { |
Glenn Randers-Pehrson | 96027d9 | 2012-03-29 06:15:55 -0500 | [diff] [blame] | 740 | /* Restore to previous condition */ |
| 741 | info_ptr->max_text = old_max_text; |
| 742 | info_ptr->text = old_text; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 743 | return(1); |
| 744 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 745 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 746 | memcpy(info_ptr->text, old_text, (png_size_t)(old_max_text * |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 747 | (sizeof (png_text)))); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 748 | png_free(png_ptr, old_text); |
| 749 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 750 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 751 | else |
| 752 | { |
| 753 | info_ptr->max_text = num_text + 8; |
| 754 | info_ptr->num_text = 0; |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 755 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 756 | (png_size_t)(info_ptr->max_text * (sizeof (png_text)))); |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 757 | if (info_ptr->text == NULL) |
Glenn Randers-Pehrson | 96027d9 | 2012-03-29 06:15:55 -0500 | [diff] [blame] | 758 | { |
| 759 | /* Restore to previous condition */ |
| 760 | info_ptr->num_text = old_num_text; |
| 761 | info_ptr->max_text = old_max_text; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 762 | return(1); |
Glenn Randers-Pehrson | 96027d9 | 2012-03-29 06:15:55 -0500 | [diff] [blame] | 763 | } |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 764 | info_ptr->free_me |= PNG_FREE_TEXT; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 765 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 766 | |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 767 | png_debug1(3, "allocated %d entries for info_ptr->text", |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 768 | info_ptr->max_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 769 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 770 | for (i = 0; i < num_text; i++) |
| 771 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 772 | png_size_t text_length, key_len; |
| 773 | png_size_t lang_len, lang_key_len; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 774 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); |
| 775 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 776 | if (text_ptr[i].key == NULL) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 777 | continue; |
| 778 | |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 779 | if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE || |
| 780 | text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST) |
Glenn Randers-Pehrson | e34f80e | 2010-10-13 06:55:30 -0500 | [diff] [blame] | 781 | { |
| 782 | png_warning(png_ptr, "text compression mode is out of range"); |
| 783 | continue; |
| 784 | } |
| 785 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 786 | key_len = strlen(text_ptr[i].key); |
Glenn Randers-Pehrson | 79b2d64 | 2010-10-13 07:31:14 -0500 | [diff] [blame] | 787 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 788 | if (text_ptr[i].compression <= 0) |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 789 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 790 | lang_len = 0; |
| 791 | lang_key_len = 0; |
Glenn Randers-Pehrson | 1ef65b6 | 2000-05-12 06:19:53 -0500 | [diff] [blame] | 792 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 793 | |
Glenn Randers-Pehrson | dd78d52 | 2010-03-30 08:34:02 -0500 | [diff] [blame] | 794 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 795 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 796 | { |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 797 | /* Set iTXt data */ |
Glenn Randers-Pehrson | d6ea40a | 2009-11-02 07:32:00 -0600 | [diff] [blame] | 798 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 799 | if (text_ptr[i].lang != NULL) |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 800 | lang_len = strlen(text_ptr[i].lang); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 801 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 802 | else |
| 803 | lang_len = 0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 804 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 805 | if (text_ptr[i].lang_key != NULL) |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 806 | lang_key_len = strlen(text_ptr[i].lang_key); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 807 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 808 | else |
| 809 | lang_key_len = 0; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 810 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 811 | # else /* PNG_iTXt_SUPPORTED */ |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 812 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 813 | png_warning(png_ptr, "iTXt chunk not supported"); |
| 814 | continue; |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 815 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 816 | # endif |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 817 | |
Glenn Randers-Pehrson | 3097f61 | 2001-05-07 14:52:45 -0500 | [diff] [blame] | 818 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 819 | { |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 820 | text_length = 0; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 821 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 822 | if (text_ptr[i].compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 823 | textp->compression = PNG_ITXT_COMPRESSION_NONE; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 824 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 825 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 826 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 827 | textp->compression = PNG_TEXT_COMPRESSION_NONE; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 828 | } |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 829 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 830 | else |
| 831 | { |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 832 | text_length = strlen(text_ptr[i].text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 833 | textp->compression = text_ptr[i].compression; |
| 834 | } |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 835 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 836 | textp->key = (png_charp)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 837 | (png_size_t) |
| 838 | (key_len + text_length + lang_len + lang_key_len + 4)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 839 | |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 840 | if (textp->key == NULL) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 841 | return(1); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 842 | |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 843 | 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] | 844 | (unsigned long)(png_uint_32) |
| 845 | (key_len + lang_len + lang_key_len + text_length + 4), |
Glenn Randers-Pehrson | b764c60 | 2011-01-14 21:18:37 -0600 | [diff] [blame] | 846 | textp->key); |
Glenn Randers-Pehrson | 6d8f3b0 | 1999-10-23 08:39:18 -0500 | [diff] [blame] | 847 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 848 | 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] | 849 | *(textp->key + key_len) = '\0'; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 850 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 851 | if (text_ptr[i].compression > 0) |
| 852 | { |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 853 | textp->lang = textp->key + key_len + 1; |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 854 | memcpy(textp->lang, text_ptr[i].lang, lang_len); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 855 | *(textp->lang + lang_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 856 | textp->lang_key = textp->lang + lang_len + 1; |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 857 | 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] | 858 | *(textp->lang_key + lang_key_len) = '\0'; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 859 | textp->text = textp->lang_key + lang_key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 860 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 861 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 862 | else |
| 863 | { |
Glenn Randers-Pehrson | 3f54925 | 2001-10-27 07:35:13 -0500 | [diff] [blame] | 864 | textp->lang=NULL; |
| 865 | textp->lang_key=NULL; |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 866 | textp->text = textp->key + key_len + 1; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 867 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 868 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 869 | if (text_length) |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 870 | memcpy(textp->text, text_ptr[i].text, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 871 | (png_size_t)(text_length)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 872 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 873 | *(textp->text + text_length) = '\0'; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 874 | |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 875 | # ifdef PNG_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 876 | if (textp->compression > 0) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 877 | { |
| 878 | textp->text_length = 0; |
| 879 | textp->itxt_length = text_length; |
| 880 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 881 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 882 | else |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 883 | # endif |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 884 | { |
| 885 | textp->text_length = text_length; |
| 886 | textp->itxt_length = 0; |
| 887 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 888 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 889 | info_ptr->num_text++; |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 890 | png_debug1(3, "transferred text chunk %d", info_ptr->num_text); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 891 | } |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 892 | return(0); |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 893 | } |
| 894 | #endif |
| 895 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 896 | #ifdef PNG_tIME_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 897 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 898 | png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr, |
| 899 | png_const_timep mod_time) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 900 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 901 | png_debug1(1, "in %s storage function", "tIME"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 902 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 903 | if (png_ptr == NULL || info_ptr == NULL || mod_time == NULL || |
Glenn Randers-Pehrson | 5379b24 | 1999-11-27 10:22:33 -0600 | [diff] [blame] | 904 | (png_ptr->mode & PNG_WROTE_tIME)) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 905 | return; |
| 906 | |
Glenn Randers-Pehrson | 29fca79 | 2011-11-19 15:08:04 -0600 | [diff] [blame] | 907 | if (mod_time->month == 0 || mod_time->month > 12 || |
| 908 | mod_time->day == 0 || mod_time->day > 31 || |
| 909 | mod_time->hour > 23 || mod_time->minute > 59 || |
| 910 | mod_time->second > 60) |
| 911 | { |
| 912 | png_warning(png_ptr, "Ignoring invalid time value"); |
| 913 | return; |
| 914 | } |
| 915 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 916 | info_ptr->mod_time = *mod_time; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 917 | info_ptr->valid |= PNG_INFO_tIME; |
| 918 | } |
| 919 | #endif |
| 920 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 921 | #ifdef PNG_tRNS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 922 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 923 | png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 924 | 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] | 925 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 926 | png_debug1(1, "in %s storage function", "tRNS"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 927 | |
Glenn Randers-Pehrson | a357b99 | 1998-02-08 20:56:40 -0600 | [diff] [blame] | 928 | if (png_ptr == NULL || info_ptr == NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 929 | return; |
| 930 | |
Glenn Randers-Pehrson | 6abea75 | 2009-08-08 16:52:06 -0500 | [diff] [blame] | 931 | if (trans_alpha != NULL) |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 932 | { |
Glenn Randers-Pehrson | ef29a5e | 2009-10-31 19:37:05 -0500 | [diff] [blame] | 933 | /* 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] | 934 | * we do it for backward compatibility with the way the png_handle_tRNS |
| 935 | * function used to do the allocation. |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 936 | * |
| 937 | * 1.6.0: The above statement is incorrect; png_handle_tRNS effectively |
| 938 | * relies on png_set_tRNS storing the information in png_struct |
| 939 | * (otherwise it won't be there for the code in pngrtran.c). |
Glenn Randers-Pehrson | d1e8c86 | 2002-06-20 06:54:34 -0500 | [diff] [blame] | 940 | */ |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 941 | |
Glenn Randers-Pehrson | 76e5fd6 | 2000-12-28 07:50:05 -0600 | [diff] [blame] | 942 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 943 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 944 | /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 945 | png_ptr->trans_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep, |
| 946 | png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 947 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 948 | if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 949 | 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] | 950 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 951 | |
Glenn Randers-Pehrson | 56f6396 | 2008-10-06 10:16:17 -0500 | [diff] [blame] | 952 | if (trans_color != NULL) |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 953 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 954 | int sample_max = (1 << info_ptr->bit_depth); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 955 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 956 | if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 957 | trans_color->gray > sample_max) || |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 958 | (info_ptr->color_type == PNG_COLOR_TYPE_RGB && |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 959 | (trans_color->red > sample_max || |
| 960 | trans_color->green > sample_max || |
| 961 | trans_color->blue > sample_max))) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 962 | png_warning(png_ptr, |
| 963 | "tRNS chunk has out-of-range samples for bit_depth"); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 964 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 965 | info_ptr->trans_color = *trans_color; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 966 | |
Glenn Randers-Pehrson | b6ce43d | 1998-01-01 07:13:13 -0600 | [diff] [blame] | 967 | if (num_trans == 0) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 968 | num_trans = 1; |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 969 | } |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 970 | |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 971 | info_ptr->num_trans = (png_uint_16)num_trans; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 972 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 973 | if (num_trans != 0) |
| 974 | { |
| 975 | info_ptr->valid |= PNG_INFO_tRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 976 | info_ptr->free_me |= PNG_FREE_TRNS; |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 977 | } |
Andreas Dilger | 47a0c42 | 1997-05-16 02:46:07 -0500 | [diff] [blame] | 978 | } |
| 979 | #endif |
| 980 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 981 | #ifdef PNG_sPLT_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 982 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 983 | png_set_sPLT(png_const_structrp png_ptr, |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 984 | png_inforp info_ptr, png_const_sPLT_tp entries, int nentries) |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 985 | /* |
| 986 | * entries - array of png_sPLT_t structures |
| 987 | * to be added to the list of palettes |
| 988 | * in the info structure. |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 989 | * |
Glenn Randers-Pehrson | 3779c69 | 2006-11-07 20:38:11 -0600 | [diff] [blame] | 990 | * nentries - number of palette structures to be |
| 991 | * added. |
| 992 | */ |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 993 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 994 | png_sPLT_tp np; |
| 995 | int i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 996 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 997 | if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || |
| 998 | entries == NULL) |
Glenn Randers-Pehrson | 07748d1 | 2002-05-25 11:12:10 -0500 | [diff] [blame] | 999 | return; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1000 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1001 | np = png_voidcast(png_sPLT_tp, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1002 | (info_ptr->splt_palettes_num + nentries) * (sizeof (png_sPLT_t)))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1003 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1004 | if (np == NULL) |
| 1005 | { |
| 1006 | png_warning(png_ptr, "No memory for sPLT palettes"); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1007 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1008 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1009 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1010 | memcpy(np, info_ptr->splt_palettes, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1011 | info_ptr->splt_palettes_num * (sizeof (png_sPLT_t))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1012 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1013 | png_free(png_ptr, info_ptr->splt_palettes); |
| 1014 | info_ptr->splt_palettes=NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1015 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1016 | /* TODO: fix this, it apparently leaves NULL entries in the event of OOM |
| 1017 | * below. |
| 1018 | */ |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1019 | for (i = 0; i < nentries; i++) |
| 1020 | { |
| 1021 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1022 | png_const_sPLT_tp from = entries + i; |
John Bowler | f3f7e14 | 2011-09-09 07:32:37 -0500 | [diff] [blame] | 1023 | png_size_t length; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1024 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1025 | /* In event of error below the name and entries fields must be set to |
| 1026 | * NULL, otherwise libpng will crash later on while trying to free the |
| 1027 | * uninitialized pointers. |
| 1028 | */ |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1029 | memset(to, 0, (sizeof *to)); |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1030 | |
| 1031 | if (from->name == NULL || from->entries == NULL) |
| 1032 | continue; |
| 1033 | |
Glenn Randers-Pehrson | ece07cf | 2012-08-10 18:08:02 -0500 | [diff] [blame^] | 1034 | length = strlen(from->name) + 1; |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1035 | to->name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length)); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1036 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1037 | if (to->name == NULL) |
| 1038 | { |
| 1039 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1040 | "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1041 | continue; |
| 1042 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1043 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1044 | memcpy(to->name, from->name, length); |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1045 | to->entries = png_voidcast(png_sPLT_entryp, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1046 | from->nentries * (sizeof (png_sPLT_entry)))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1047 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1048 | if (to->entries == NULL) |
| 1049 | { |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1050 | png_warning(png_ptr, "Out of memory while processing sPLT chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1051 | png_free(png_ptr, to->name); |
| 1052 | to->name = NULL; |
| 1053 | continue; |
| 1054 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1055 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1056 | memcpy(to->entries, from->entries, |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1057 | from->nentries * (sizeof (png_sPLT_entry))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1058 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1059 | to->nentries = from->nentries; |
| 1060 | to->depth = from->depth; |
| 1061 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1062 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1063 | info_ptr->splt_palettes = np; |
| 1064 | info_ptr->splt_palettes_num += nentries; |
| 1065 | info_ptr->valid |= PNG_INFO_sPLT; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1066 | info_ptr->free_me |= PNG_FREE_SPLT; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1067 | } |
| 1068 | #endif /* PNG_sPLT_SUPPORTED */ |
| 1069 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 1070 | #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1071 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1072 | png_set_unknown_chunks(png_const_structrp png_ptr, |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1073 | png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns) |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1074 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1075 | png_unknown_chunkp np; |
| 1076 | int i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1077 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1078 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) |
Glenn Randers-Pehrson | 83fb855 | 2009-06-16 17:52:23 -0500 | [diff] [blame] | 1079 | return; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1080 | |
John Bowler | 40b2603 | 2011-12-22 08:09:15 -0600 | [diff] [blame] | 1081 | np = png_voidcast(png_unknown_chunkp, png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1082 | (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) * |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1083 | (sizeof (png_unknown_chunk)))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1084 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1085 | if (np == NULL) |
| 1086 | { |
| 1087 | png_warning(png_ptr, |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1088 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1089 | return; |
| 1090 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1091 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1092 | memcpy(np, info_ptr->unknown_chunks, |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1093 | (png_size_t)info_ptr->unknown_chunks_num * |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1094 | (sizeof (png_unknown_chunk))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1095 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1096 | png_free(png_ptr, info_ptr->unknown_chunks); |
Glenn Randers-Pehrson | f81b50b | 2009-12-29 16:50:15 -0600 | [diff] [blame] | 1097 | info_ptr->unknown_chunks = NULL; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1098 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1099 | for (i = 0; i < num_unknowns; i++) |
| 1100 | { |
| 1101 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; |
Glenn Randers-Pehrson | e600c51 | 2010-08-18 07:25:46 -0500 | [diff] [blame] | 1102 | png_const_unknown_chunkp from = unknowns + i; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1103 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1104 | memcpy(to->name, from->name, (sizeof from->name)); |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1105 | to->name[(sizeof to->name)-1] = '\0'; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1106 | to->size = from->size; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1107 | |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 1108 | /* Note our location in the read or write sequence */ |
John Bowler | b11b31a | 2012-03-21 07:55:46 -0500 | [diff] [blame] | 1109 | to->location = (png_byte)png_ptr->mode; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1110 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1111 | if (from->size == 0) |
| 1112 | to->data=NULL; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1113 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1114 | else |
| 1115 | { |
| 1116 | to->data = (png_bytep)png_malloc_warn(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1117 | (png_size_t)from->size); |
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 (to->data == NULL) |
| 1120 | { |
| 1121 | png_warning(png_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1122 | "Out of memory while processing unknown chunk"); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1123 | to->size = 0; |
| 1124 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1125 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1126 | else |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1127 | memcpy(to->data, from->data, from->size); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | info_ptr->unknown_chunks = np; |
| 1132 | info_ptr->unknown_chunks_num += num_unknowns; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1133 | info_ptr->free_me |= PNG_FREE_UNKN; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1134 | } |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1135 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1136 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1137 | png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1138 | int chunk, int location) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1139 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1140 | if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < |
Glenn Randers-Pehrson | 67439c4 | 2010-08-19 07:01:09 -0500 | [diff] [blame] | 1141 | info_ptr->unknown_chunks_num) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1142 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; |
| 1143 | } |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1144 | #endif |
| 1145 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1146 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1147 | #ifdef PNG_MNG_FEATURES_SUPPORTED |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1148 | png_uint_32 PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1149 | png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features) |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1150 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1151 | png_debug(1, "in png_permit_mng_features"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1152 | |
Glenn Randers-Pehrson | 5e5c1e1 | 2000-11-10 12:26:19 -0600 | [diff] [blame] | 1153 | if (png_ptr == NULL) |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1154 | return 0; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1155 | |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1156 | png_ptr->mng_features_permitted = mng_features & PNG_ALL_MNG_FEATURES; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1157 | |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1158 | return png_ptr->mng_features_permitted; |
Glenn Randers-Pehrson | 4393a9a | 1999-09-17 12:27:26 -0500 | [diff] [blame] | 1159 | } |
| 1160 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1161 | |
Glenn Randers-Pehrson | 6ba9088 | 2009-12-25 14:26:13 -0600 | [diff] [blame] | 1162 | #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1163 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1164 | png_set_keep_unknown_chunks(png_structrp png_ptr, int keep, |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1165 | png_const_bytep chunk_list, int num_chunksIn) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1166 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1167 | png_bytep new_list, p; |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1168 | unsigned int i, num_chunks, old_num_chunks; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1169 | if (png_ptr == NULL) |
| 1170 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1171 | |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1172 | if (num_chunksIn <= 0) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1173 | { |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1174 | 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] | 1175 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1176 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1177 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1178 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1179 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1180 | if (keep == PNG_HANDLE_CHUNK_ALWAYS) |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1181 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1182 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1183 | else |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1184 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1185 | |
Glenn Randers-Pehrson | 96b9170 | 2012-06-16 13:26:28 -0500 | [diff] [blame] | 1186 | if (num_chunksIn == 0) |
| 1187 | return; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1188 | } |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1189 | |
Glenn Randers-Pehrson | 96b9170 | 2012-06-16 13:26:28 -0500 | [diff] [blame] | 1190 | if (num_chunksIn < 0) |
| 1191 | { |
| 1192 | /* Ignore all unknown chunks and all chunks recognized by |
| 1193 | * libpng except for IHDR, PLTE, tRNS, IDAT, and IEND |
| 1194 | */ |
| 1195 | static PNG_CONST png_byte chunks_to_ignore[] = { |
| 1196 | 98, 75, 71, 68, '\0', /* bKGD */ |
| 1197 | 99, 72, 82, 77, '\0', /* cHRM */ |
| 1198 | 103, 65, 77, 65, '\0', /* gAMA */ |
| 1199 | 104, 73, 83, 84, '\0', /* hIST */ |
| 1200 | 105, 67, 67, 80, '\0', /* iCCP */ |
| 1201 | 105, 84, 88, 116, '\0', /* iTXt */ |
| 1202 | 111, 70, 70, 115, '\0', /* oFFs */ |
| 1203 | 112, 67, 65, 76, '\0', /* pCAL */ |
| 1204 | 112, 72, 89, 115, '\0', /* pHYs */ |
| 1205 | 115, 66, 73, 84, '\0', /* sBIT */ |
| 1206 | 115, 67, 65, 76, '\0', /* sCAL */ |
| 1207 | 115, 80, 76, 84, '\0', /* sPLT */ |
| 1208 | 115, 84, 69, 82, '\0', /* sTER */ |
| 1209 | 115, 82, 71, 66, '\0', /* sRGB */ |
| 1210 | 116, 69, 88, 116, '\0', /* tEXt */ |
| 1211 | 116, 73, 77, 69, '\0', /* tIME */ |
| 1212 | 122, 84, 88, 116, '\0' /* zTXt */ |
| 1213 | }; |
| 1214 | |
| 1215 | chunk_list = chunks_to_ignore; |
Glenn Randers-Pehrson | 432c174 | 2012-08-09 20:14:48 -0500 | [diff] [blame] | 1216 | num_chunks = (unsigned int)(sizeof chunks_to_ignore)/5; |
Glenn Randers-Pehrson | 96b9170 | 2012-06-16 13:26:28 -0500 | [diff] [blame] | 1217 | } |
| 1218 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1219 | if (chunk_list == NULL) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1220 | return; |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1221 | |
Glenn Randers-Pehrson | 96b9170 | 2012-06-16 13:26:28 -0500 | [diff] [blame] | 1222 | if (num_chunksIn > 0) |
| 1223 | num_chunks = (unsigned int)num_chunksIn; |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1224 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1225 | old_num_chunks = png_ptr->num_chunk_list; |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1226 | new_list = png_voidcast(png_bytep, png_malloc(png_ptr, |
| 1227 | 5 * (num_chunks + old_num_chunks))); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1228 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1229 | if (png_ptr->chunk_list != NULL) |
| 1230 | { |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1231 | memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks); |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1232 | png_free(png_ptr, png_ptr->chunk_list); |
| 1233 | png_ptr->chunk_list=NULL; |
| 1234 | } |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1235 | |
Glenn Randers-Pehrson | dbb7e19 | 2012-08-10 17:27:42 -0500 | [diff] [blame] | 1236 | memcpy(new_list + 5*old_num_chunks, chunk_list, |
John Bowler | fcd301d | 2011-12-28 21:34:27 -0600 | [diff] [blame] | 1237 | 5*(unsigned int)num_chunks); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1238 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1239 | for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) |
| 1240 | *p=(png_byte)keep; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1241 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1242 | png_ptr->num_chunk_list = old_num_chunks + num_chunks; |
| 1243 | png_ptr->chunk_list = new_list; |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1244 | png_ptr->free_me |= PNG_FREE_LIST; |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1245 | } |
| 1246 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1247 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1248 | #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1249 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1250 | png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr, |
Glenn Randers-Pehrson | da30135 | 2010-03-06 06:42:48 -0600 | [diff] [blame] | 1251 | png_user_chunk_ptr read_user_chunk_fn) |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1252 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1253 | png_debug(1, "in png_set_read_user_chunk_fn"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1254 | |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1255 | if (png_ptr == NULL) |
| 1256 | return; |
Glenn Randers-Pehrson | b3ce365 | 2009-08-15 21:47:03 -0500 | [diff] [blame] | 1257 | |
Glenn Randers-Pehrson | 61c32d9 | 2000-02-04 23:40:16 -0600 | [diff] [blame] | 1258 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; |
| 1259 | png_ptr->user_chunk_ptr = user_chunk_ptr; |
| 1260 | } |
| 1261 | #endif |
Glenn Randers-Pehrson | 166c5a3 | 1999-12-10 09:43:02 -0600 | [diff] [blame] | 1262 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1263 | #ifdef PNG_INFO_IMAGE_SUPPORTED |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1264 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1265 | png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr, |
| 1266 | png_bytepp row_pointers) |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1267 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1268 | png_debug1(1, "in %s storage function", "rows"); |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1269 | |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1270 | if (png_ptr == NULL || info_ptr == NULL) |
| 1271 | return; |
| 1272 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1273 | if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) |
Glenn Randers-Pehrson | 4accabb | 2000-04-14 14:20:47 -0500 | [diff] [blame] | 1274 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1275 | |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1276 | info_ptr->row_pointers = row_pointers; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1277 | |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1278 | if (row_pointers) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1279 | info_ptr->valid |= PNG_INFO_IDAT; |
Glenn Randers-Pehrson | a77ef62 | 2000-02-18 13:48:52 -0600 | [diff] [blame] | 1280 | } |
| 1281 | #endif |
| 1282 | |
Glenn Randers-Pehrson | 7529457 | 2000-05-06 14:09:57 -0500 | [diff] [blame] | 1283 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1284 | png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size) |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1285 | { |
Glenn Randers-Pehrson | 170b70c | 2006-03-10 10:19:04 -0600 | [diff] [blame] | 1286 | if (png_ptr == NULL) |
| 1287 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1288 | |
John Bowler | b5d0051 | 2012-03-09 09:15:18 -0600 | [diff] [blame] | 1289 | if (size == 0 || size > PNG_UINT_31_MAX) |
| 1290 | png_error(png_ptr, "invalid compression buffer size"); |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1291 | |
John Bowler | b5d0051 | 2012-03-09 09:15:18 -0600 | [diff] [blame] | 1292 | # ifdef PNG_SEQUENTIAL_READ_SUPPORTED |
| 1293 | if (png_ptr->mode & PNG_IS_READ_STRUCT) |
| 1294 | { |
| 1295 | png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */ |
| 1296 | return; |
| 1297 | } |
| 1298 | # endif |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1299 | |
John Bowler | 134c576 | 2012-08-10 10:46:45 -0500 | [diff] [blame] | 1300 | # ifdef PNG_WRITE_SUPPORTED |
John Bowler | b5d0051 | 2012-03-09 09:15:18 -0600 | [diff] [blame] | 1301 | if (!(png_ptr->mode & PNG_IS_READ_STRUCT)) |
| 1302 | { |
| 1303 | if (png_ptr->zowner != 0) |
| 1304 | { |
| 1305 | png_warning(png_ptr, |
| 1306 | "Compression buffer size cannot be changed because it is in use"); |
| 1307 | return; |
| 1308 | } |
| 1309 | |
| 1310 | if (size > ZLIB_IO_MAX) |
| 1311 | { |
| 1312 | png_warning(png_ptr, |
| 1313 | "Compression buffer size limited to system maximum"); |
| 1314 | size = ZLIB_IO_MAX; /* must fit */ |
| 1315 | } |
| 1316 | |
| 1317 | else if (size < 6) |
| 1318 | { |
| 1319 | /* Deflate will potentially go into an infinite loop on a SYNC_FLUSH |
| 1320 | * if this is permitted. |
| 1321 | */ |
| 1322 | png_warning(png_ptr, |
| 1323 | "Compression buffer size cannot be reduced below 6"); |
| 1324 | return; |
| 1325 | } |
| 1326 | |
| 1327 | if (png_ptr->zbuffer_size != size) |
| 1328 | { |
| 1329 | png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list); |
| 1330 | png_ptr->zbuffer_size = (uInt)size; |
| 1331 | } |
| 1332 | } |
| 1333 | # endif |
Glenn Randers-Pehrson | 228bd39 | 2000-04-23 23:14:02 -0500 | [diff] [blame] | 1334 | } |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1335 | |
| 1336 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1337 | png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask) |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1338 | { |
| 1339 | if (png_ptr && info_ptr) |
Glenn Randers-Pehrson | 145f5c8 | 2008-07-10 09:13:13 -0500 | [diff] [blame] | 1340 | info_ptr->valid &= ~mask; |
Glenn Randers-Pehrson | fc4a143 | 2000-05-17 17:39:34 -0500 | [diff] [blame] | 1341 | } |
Glenn Randers-Pehrson | 231e687 | 2001-01-12 15:13:06 -0600 | [diff] [blame] | 1342 | |
Glenn Randers-Pehrson | e68f5a3 | 2001-05-14 09:20:53 -0500 | [diff] [blame] | 1343 | |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1344 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED |
Glenn Randers-Pehrson | 4bb4d01 | 2009-05-20 12:45:29 -0500 | [diff] [blame] | 1345 | /* This function was added to libpng 1.2.6 */ |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1346 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1347 | png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max, |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1348 | png_uint_32 user_height_max) |
| 1349 | { |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1350 | /* Images with dimensions larger than these limits will be |
| 1351 | * rejected by png_set_IHDR(). To accept any PNG datastream |
| 1352 | * regardless of dimensions, set both limits to 0x7ffffffL. |
| 1353 | */ |
| 1354 | if (png_ptr == NULL) |
| 1355 | return; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1356 | |
Glenn Randers-Pehrson glennrp@comcast.net | b1c0d33 | 2009-05-15 20:39:34 -0500 | [diff] [blame] | 1357 | png_ptr->user_width_max = user_width_max; |
| 1358 | png_ptr->user_height_max = user_height_max; |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1359 | } |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1360 | |
Glenn Randers-Pehrson | 17ca340 | 2009-11-09 06:51:16 -0600 | [diff] [blame] | 1361 | /* This function was added to libpng 1.4.0 */ |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1362 | void PNGAPI |
John Bowler | 4f67e40 | 2011-12-28 08:43:37 -0600 | [diff] [blame] | 1363 | png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max) |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1364 | { |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1365 | if (png_ptr) |
| 1366 | png_ptr->user_chunk_cache_max = user_chunk_cache_max; |
| 1367 | } |
| 1368 | |
| 1369 | /* This function was added to libpng 1.4.1 */ |
| 1370 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1371 | png_set_chunk_malloc_max (png_structrp png_ptr, |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1372 | png_alloc_size_t user_chunk_malloc_max) |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 1373 | { |
Glenn Randers-Pehrson | 62333ba | 2010-10-23 08:48:51 -0500 | [diff] [blame] | 1374 | if (png_ptr) |
| 1375 | png_ptr->user_chunk_malloc_max = user_chunk_malloc_max; |
Glenn Randers-Pehrson | 800d1e9 | 2008-08-20 17:25:21 -0500 | [diff] [blame] | 1376 | } |
Glenn Randers-Pehrson | 272489d | 2004-08-04 06:34:52 -0500 | [diff] [blame] | 1377 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ |
| 1378 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1379 | |
Glenn Randers-Pehrson | e26c095 | 2009-09-23 11:22:08 -0500 | [diff] [blame] | 1380 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1381 | void PNGAPI |
John Bowler | 5d56786 | 2011-12-24 09:12:00 -0600 | [diff] [blame] | 1382 | png_set_benign_errors(png_structrp png_ptr, int allowed) |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1383 | { |
Glenn Randers-Pehrson | 51650b8 | 2008-08-05 07:44:42 -0500 | [diff] [blame] | 1384 | png_debug(1, "in png_set_benign_errors"); |
Glenn Randers-Pehrson | da00980 | 2009-08-15 13:25:47 -0500 | [diff] [blame] | 1385 | |
Glenn Randers-Pehrson | dd6ecbe | 2012-03-16 07:33:38 -0500 | [diff] [blame] | 1386 | /* If allowed is 1, png_benign_error() is treated as a warning. |
| 1387 | * |
| 1388 | * If allowed is 0, png_benign_error() is treated as an error (which |
| 1389 | * is the default behavior if png_set_benign_errors() is not called). |
| 1390 | */ |
| 1391 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1392 | if (allowed) |
Glenn Randers-Pehrson | ce9d8a3 | 2012-03-18 22:39:52 -0500 | [diff] [blame] | 1393 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN | |
| 1394 | PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN; |
Glenn Randers-Pehrson | f24daf2 | 2010-05-06 09:44:04 -0500 | [diff] [blame] | 1395 | |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1396 | else |
Glenn Randers-Pehrson | ce9d8a3 | 2012-03-18 22:39:52 -0500 | [diff] [blame] | 1397 | png_ptr->flags &= ~(PNG_FLAG_BENIGN_ERRORS_WARN | |
| 1398 | PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN); |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 1399 | } |
| 1400 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ |
Glenn Randers-Pehrson | eeb1bb6 | 2012-03-02 22:10:15 -0600 | [diff] [blame] | 1401 | |
Glenn Randers-Pehrson | e243a1f | 2012-04-13 12:35:21 -0500 | [diff] [blame] | 1402 | #ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED |
Glenn Randers-Pehrson | eeb1bb6 | 2012-03-02 22:10:15 -0600 | [diff] [blame] | 1403 | /* Do not report invalid palette index; added at libng-1.5.10 */ |
| 1404 | void PNGAPI |
| 1405 | png_set_check_for_invalid_index(png_structrp png_ptr, int allowed) |
| 1406 | { |
| 1407 | png_debug(1, "in png_set_check_for_invalid_index"); |
| 1408 | |
Glenn Randers-Pehrson | 945cb1f | 2012-03-10 08:48:04 -0600 | [diff] [blame] | 1409 | if (allowed > 0) |
Glenn Randers-Pehrson | eeb1bb6 | 2012-03-02 22:10:15 -0600 | [diff] [blame] | 1410 | png_ptr->num_palette_max = 0; |
| 1411 | |
| 1412 | else |
| 1413 | png_ptr->num_palette_max = -1; |
| 1414 | } |
Glenn Randers-Pehrson | eeb1bb6 | 2012-03-02 22:10:15 -0600 | [diff] [blame] | 1415 | #endif |
| 1416 | |
Glenn Randers-Pehrson | 9c3ab68 | 2006-02-20 22:09:05 -0600 | [diff] [blame] | 1417 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |