Wei Chang Shen / DMemWin

Dependencies:   emwin_lib

Fork of DMemWin by Embedded Artists

png/pngget.c@4:20387dbf7ecf, 2016-06-02 (annotated)

Committer:
destinyXfate
Date:
Thu Jun 02 04:55:08 2016 +0000
Revision:
4:20387dbf7ecf
Parent:
2:0e2ef1edf01b 
;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
destinyXfate 2:0e2ef1edf01b 1
destinyXfate 2:0e2ef1edf01b 2 /* pngget.c - retrieval of values from info struct
destinyXfate 2:0e2ef1edf01b 3 *
destinyXfate 2:0e2ef1edf01b 4 * Last changed in libpng 1.2.15 January 5, 2007
destinyXfate 2:0e2ef1edf01b 5 * For conditions of distribution and use, see copyright notice in png.h
destinyXfate 2:0e2ef1edf01b 6 * Copyright (c) 1998-2007 Glenn Randers-Pehrson
destinyXfate 2:0e2ef1edf01b 7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
destinyXfate 2:0e2ef1edf01b 8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
destinyXfate 2:0e2ef1edf01b 9 */
destinyXfate 2:0e2ef1edf01b 10
destinyXfate 2:0e2ef1edf01b 11 #define PNG_INTERNAL
destinyXfate 2:0e2ef1edf01b 12 #include "png.h"
destinyXfate 2:0e2ef1edf01b 13
destinyXfate 2:0e2ef1edf01b 14 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 15
destinyXfate 2:0e2ef1edf01b 16 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 17 png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
destinyXfate 2:0e2ef1edf01b 18 {
destinyXfate 2:0e2ef1edf01b 19 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 20 return(info_ptr->valid & flag);
destinyXfate 2:0e2ef1edf01b 21 else
destinyXfate 2:0e2ef1edf01b 22 return(0);
destinyXfate 2:0e2ef1edf01b 23 }
destinyXfate 2:0e2ef1edf01b 24
destinyXfate 2:0e2ef1edf01b 25 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 26 png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 27 {
destinyXfate 2:0e2ef1edf01b 28 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 29 return(info_ptr->rowbytes);
destinyXfate 2:0e2ef1edf01b 30 else
destinyXfate 2:0e2ef1edf01b 31 return(0);
destinyXfate 2:0e2ef1edf01b 32 }
destinyXfate 2:0e2ef1edf01b 33
destinyXfate 2:0e2ef1edf01b 34 #if defined(PNG_INFO_IMAGE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 35 png_bytepp PNGAPI
destinyXfate 2:0e2ef1edf01b 36 png_get_rows(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 37 {
destinyXfate 2:0e2ef1edf01b 38 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 39 return(info_ptr->row_pointers);
destinyXfate 2:0e2ef1edf01b 40 else
destinyXfate 2:0e2ef1edf01b 41 return(0);
destinyXfate 2:0e2ef1edf01b 42 }
destinyXfate 2:0e2ef1edf01b 43 #endif
destinyXfate 2:0e2ef1edf01b 44
destinyXfate 2:0e2ef1edf01b 45 #ifdef PNG_EASY_ACCESS_SUPPORTED
destinyXfate 2:0e2ef1edf01b 46 /* easy access to info, added in libpng-0.99 */
destinyXfate 2:0e2ef1edf01b 47 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 48 png_get_image_width(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 49 {
destinyXfate 2:0e2ef1edf01b 50 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 51 {
destinyXfate 2:0e2ef1edf01b 52 return info_ptr->width;
destinyXfate 2:0e2ef1edf01b 53 }
destinyXfate 2:0e2ef1edf01b 54 return (0);
destinyXfate 2:0e2ef1edf01b 55 }
destinyXfate 2:0e2ef1edf01b 56
destinyXfate 2:0e2ef1edf01b 57 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 58 png_get_image_height(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 59 {
destinyXfate 2:0e2ef1edf01b 60 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 61 {
destinyXfate 2:0e2ef1edf01b 62 return info_ptr->height;
destinyXfate 2:0e2ef1edf01b 63 }
destinyXfate 2:0e2ef1edf01b 64 return (0);
destinyXfate 2:0e2ef1edf01b 65 }
destinyXfate 2:0e2ef1edf01b 66
destinyXfate 2:0e2ef1edf01b 67 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 68 png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 69 {
destinyXfate 2:0e2ef1edf01b 70 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 71 {
destinyXfate 2:0e2ef1edf01b 72 return info_ptr->bit_depth;
destinyXfate 2:0e2ef1edf01b 73 }
destinyXfate 2:0e2ef1edf01b 74 return (0);
destinyXfate 2:0e2ef1edf01b 75 }
destinyXfate 2:0e2ef1edf01b 76
destinyXfate 2:0e2ef1edf01b 77 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 78 png_get_color_type(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 79 {
destinyXfate 2:0e2ef1edf01b 80 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 81 {
destinyXfate 2:0e2ef1edf01b 82 return info_ptr->color_type;
destinyXfate 2:0e2ef1edf01b 83 }
destinyXfate 2:0e2ef1edf01b 84 return (0);
destinyXfate 2:0e2ef1edf01b 85 }
destinyXfate 2:0e2ef1edf01b 86
destinyXfate 2:0e2ef1edf01b 87 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 88 png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 89 {
destinyXfate 2:0e2ef1edf01b 90 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 91 {
destinyXfate 2:0e2ef1edf01b 92 return info_ptr->filter_type;
destinyXfate 2:0e2ef1edf01b 93 }
destinyXfate 2:0e2ef1edf01b 94 return (0);
destinyXfate 2:0e2ef1edf01b 95 }
destinyXfate 2:0e2ef1edf01b 96
destinyXfate 2:0e2ef1edf01b 97 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 98 png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 99 {
destinyXfate 2:0e2ef1edf01b 100 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 101 {
destinyXfate 2:0e2ef1edf01b 102 return info_ptr->interlace_type;
destinyXfate 2:0e2ef1edf01b 103 }
destinyXfate 2:0e2ef1edf01b 104 return (0);
destinyXfate 2:0e2ef1edf01b 105 }
destinyXfate 2:0e2ef1edf01b 106
destinyXfate 2:0e2ef1edf01b 107 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 108 png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 109 {
destinyXfate 2:0e2ef1edf01b 110 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 111 {
destinyXfate 2:0e2ef1edf01b 112 return info_ptr->compression_type;
destinyXfate 2:0e2ef1edf01b 113 }
destinyXfate 2:0e2ef1edf01b 114 return (0);
destinyXfate 2:0e2ef1edf01b 115 }
destinyXfate 2:0e2ef1edf01b 116
destinyXfate 2:0e2ef1edf01b 117 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 118 png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 119 {
destinyXfate 2:0e2ef1edf01b 120 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 121 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 122 if (info_ptr->valid & PNG_INFO_pHYs)
destinyXfate 2:0e2ef1edf01b 123 {
destinyXfate 2:0e2ef1edf01b 124 png_debug1(1, "in %s retrieval function\n", "png_get_x_pixels_per_meter");
destinyXfate 2:0e2ef1edf01b 125 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
destinyXfate 2:0e2ef1edf01b 126 return (0);
destinyXfate 2:0e2ef1edf01b 127 else return (info_ptr->x_pixels_per_unit);
destinyXfate 2:0e2ef1edf01b 128 }
destinyXfate 2:0e2ef1edf01b 129 #else
destinyXfate 2:0e2ef1edf01b 130 return (0);
destinyXfate 2:0e2ef1edf01b 131 #endif
destinyXfate 2:0e2ef1edf01b 132 return (0);
destinyXfate 2:0e2ef1edf01b 133 }
destinyXfate 2:0e2ef1edf01b 134
destinyXfate 2:0e2ef1edf01b 135 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 136 png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 137 {
destinyXfate 2:0e2ef1edf01b 138 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 139 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 140 if (info_ptr->valid & PNG_INFO_pHYs)
destinyXfate 2:0e2ef1edf01b 141 {
destinyXfate 2:0e2ef1edf01b 142 png_debug1(1, "in %s retrieval function\n", "png_get_y_pixels_per_meter");
destinyXfate 2:0e2ef1edf01b 143 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
destinyXfate 2:0e2ef1edf01b 144 return (0);
destinyXfate 2:0e2ef1edf01b 145 else return (info_ptr->y_pixels_per_unit);
destinyXfate 2:0e2ef1edf01b 146 }
destinyXfate 2:0e2ef1edf01b 147 #else
destinyXfate 2:0e2ef1edf01b 148 return (0);
destinyXfate 2:0e2ef1edf01b 149 #endif
destinyXfate 2:0e2ef1edf01b 150 return (0);
destinyXfate 2:0e2ef1edf01b 151 }
destinyXfate 2:0e2ef1edf01b 152
destinyXfate 2:0e2ef1edf01b 153 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 154 png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 155 {
destinyXfate 2:0e2ef1edf01b 156 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 157 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 158 if (info_ptr->valid & PNG_INFO_pHYs)
destinyXfate 2:0e2ef1edf01b 159 {
destinyXfate 2:0e2ef1edf01b 160 png_debug1(1, "in %s retrieval function\n", "png_get_pixels_per_meter");
destinyXfate 2:0e2ef1edf01b 161 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
destinyXfate 2:0e2ef1edf01b 162 info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
destinyXfate 2:0e2ef1edf01b 163 return (0);
destinyXfate 2:0e2ef1edf01b 164 else return (info_ptr->x_pixels_per_unit);
destinyXfate 2:0e2ef1edf01b 165 }
destinyXfate 2:0e2ef1edf01b 166 #else
destinyXfate 2:0e2ef1edf01b 167 return (0);
destinyXfate 2:0e2ef1edf01b 168 #endif
destinyXfate 2:0e2ef1edf01b 169 return (0);
destinyXfate 2:0e2ef1edf01b 170 }
destinyXfate 2:0e2ef1edf01b 171
destinyXfate 2:0e2ef1edf01b 172 #ifdef PNG_FLOATING_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 173 float PNGAPI
destinyXfate 2:0e2ef1edf01b 174 png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 175 {
destinyXfate 2:0e2ef1edf01b 176 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 177 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 178 if (info_ptr->valid & PNG_INFO_pHYs)
destinyXfate 2:0e2ef1edf01b 179 {
destinyXfate 2:0e2ef1edf01b 180 png_debug1(1, "in %s retrieval function\n", "png_get_aspect_ratio");
destinyXfate 2:0e2ef1edf01b 181 if (info_ptr->x_pixels_per_unit == 0)
destinyXfate 2:0e2ef1edf01b 182 return ((float)0.0);
destinyXfate 2:0e2ef1edf01b 183 else
destinyXfate 2:0e2ef1edf01b 184 return ((float)((float)info_ptr->y_pixels_per_unit
destinyXfate 2:0e2ef1edf01b 185 /(float)info_ptr->x_pixels_per_unit));
destinyXfate 2:0e2ef1edf01b 186 }
destinyXfate 2:0e2ef1edf01b 187 #else
destinyXfate 2:0e2ef1edf01b 188 return (0.0);
destinyXfate 2:0e2ef1edf01b 189 #endif
destinyXfate 2:0e2ef1edf01b 190 return ((float)0.0);
destinyXfate 2:0e2ef1edf01b 191 }
destinyXfate 2:0e2ef1edf01b 192 #endif
destinyXfate 2:0e2ef1edf01b 193
destinyXfate 2:0e2ef1edf01b 194 png_int_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 195 png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 196 {
destinyXfate 2:0e2ef1edf01b 197 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 198 #if defined(PNG_oFFs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 199 if (info_ptr->valid & PNG_INFO_oFFs)
destinyXfate 2:0e2ef1edf01b 200 {
destinyXfate 2:0e2ef1edf01b 201 png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
destinyXfate 2:0e2ef1edf01b 202 if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
destinyXfate 2:0e2ef1edf01b 203 return (0);
destinyXfate 2:0e2ef1edf01b 204 else return (info_ptr->x_offset);
destinyXfate 2:0e2ef1edf01b 205 }
destinyXfate 2:0e2ef1edf01b 206 #else
destinyXfate 2:0e2ef1edf01b 207 return (0);
destinyXfate 2:0e2ef1edf01b 208 #endif
destinyXfate 2:0e2ef1edf01b 209 return (0);
destinyXfate 2:0e2ef1edf01b 210 }
destinyXfate 2:0e2ef1edf01b 211
destinyXfate 2:0e2ef1edf01b 212 png_int_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 213 png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 214 {
destinyXfate 2:0e2ef1edf01b 215 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 216 #if defined(PNG_oFFs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 217 if (info_ptr->valid & PNG_INFO_oFFs)
destinyXfate 2:0e2ef1edf01b 218 {
destinyXfate 2:0e2ef1edf01b 219 png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
destinyXfate 2:0e2ef1edf01b 220 if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
destinyXfate 2:0e2ef1edf01b 221 return (0);
destinyXfate 2:0e2ef1edf01b 222 else return (info_ptr->y_offset);
destinyXfate 2:0e2ef1edf01b 223 }
destinyXfate 2:0e2ef1edf01b 224 #else
destinyXfate 2:0e2ef1edf01b 225 return (0);
destinyXfate 2:0e2ef1edf01b 226 #endif
destinyXfate 2:0e2ef1edf01b 227 return (0);
destinyXfate 2:0e2ef1edf01b 228 }
destinyXfate 2:0e2ef1edf01b 229
destinyXfate 2:0e2ef1edf01b 230 png_int_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 231 png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 232 {
destinyXfate 2:0e2ef1edf01b 233 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 234 #if defined(PNG_oFFs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 235 if (info_ptr->valid & PNG_INFO_oFFs)
destinyXfate 2:0e2ef1edf01b 236 {
destinyXfate 2:0e2ef1edf01b 237 png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
destinyXfate 2:0e2ef1edf01b 238 if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
destinyXfate 2:0e2ef1edf01b 239 return (0);
destinyXfate 2:0e2ef1edf01b 240 else return (info_ptr->x_offset);
destinyXfate 2:0e2ef1edf01b 241 }
destinyXfate 2:0e2ef1edf01b 242 #else
destinyXfate 2:0e2ef1edf01b 243 return (0);
destinyXfate 2:0e2ef1edf01b 244 #endif
destinyXfate 2:0e2ef1edf01b 245 return (0);
destinyXfate 2:0e2ef1edf01b 246 }
destinyXfate 2:0e2ef1edf01b 247
destinyXfate 2:0e2ef1edf01b 248 png_int_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 249 png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 250 {
destinyXfate 2:0e2ef1edf01b 251 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 252 #if defined(PNG_oFFs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 253 if (info_ptr->valid & PNG_INFO_oFFs)
destinyXfate 2:0e2ef1edf01b 254 {
destinyXfate 2:0e2ef1edf01b 255 png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
destinyXfate 2:0e2ef1edf01b 256 if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
destinyXfate 2:0e2ef1edf01b 257 return (0);
destinyXfate 2:0e2ef1edf01b 258 else return (info_ptr->y_offset);
destinyXfate 2:0e2ef1edf01b 259 }
destinyXfate 2:0e2ef1edf01b 260 #else
destinyXfate 2:0e2ef1edf01b 261 return (0);
destinyXfate 2:0e2ef1edf01b 262 #endif
destinyXfate 2:0e2ef1edf01b 263 return (0);
destinyXfate 2:0e2ef1edf01b 264 }
destinyXfate 2:0e2ef1edf01b 265
destinyXfate 2:0e2ef1edf01b 266 #if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 267 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 268 png_get_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 269 {
destinyXfate 2:0e2ef1edf01b 270 return ((png_uint_32)((float)png_get_pixels_per_meter(png_ptr, info_ptr)
destinyXfate 2:0e2ef1edf01b 271 *.0254 +.5));
destinyXfate 2:0e2ef1edf01b 272 }
destinyXfate 2:0e2ef1edf01b 273
destinyXfate 2:0e2ef1edf01b 274 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 275 png_get_x_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 276 {
destinyXfate 2:0e2ef1edf01b 277 return ((png_uint_32)((float)png_get_x_pixels_per_meter(png_ptr, info_ptr)
destinyXfate 2:0e2ef1edf01b 278 *.0254 +.5));
destinyXfate 2:0e2ef1edf01b 279 }
destinyXfate 2:0e2ef1edf01b 280
destinyXfate 2:0e2ef1edf01b 281 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 282 png_get_y_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 283 {
destinyXfate 2:0e2ef1edf01b 284 return ((png_uint_32)((float)png_get_y_pixels_per_meter(png_ptr, info_ptr)
destinyXfate 2:0e2ef1edf01b 285 *.0254 +.5));
destinyXfate 2:0e2ef1edf01b 286 }
destinyXfate 2:0e2ef1edf01b 287
destinyXfate 2:0e2ef1edf01b 288 float PNGAPI
destinyXfate 2:0e2ef1edf01b 289 png_get_x_offset_inches(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 290 {
destinyXfate 2:0e2ef1edf01b 291 return ((float)png_get_x_offset_microns(png_ptr, info_ptr)
destinyXfate 2:0e2ef1edf01b 292 *.00003937);
destinyXfate 2:0e2ef1edf01b 293 }
destinyXfate 2:0e2ef1edf01b 294
destinyXfate 2:0e2ef1edf01b 295 float PNGAPI
destinyXfate 2:0e2ef1edf01b 296 png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 297 {
destinyXfate 2:0e2ef1edf01b 298 return ((float)png_get_y_offset_microns(png_ptr, info_ptr)
destinyXfate 2:0e2ef1edf01b 299 *.00003937);
destinyXfate 2:0e2ef1edf01b 300 }
destinyXfate 2:0e2ef1edf01b 301
destinyXfate 2:0e2ef1edf01b 302 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 303 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 304 png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 305 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
destinyXfate 2:0e2ef1edf01b 306 {
destinyXfate 2:0e2ef1edf01b 307 png_uint_32 retval = 0;
destinyXfate 2:0e2ef1edf01b 308
destinyXfate 2:0e2ef1edf01b 309 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
destinyXfate 2:0e2ef1edf01b 310 {
destinyXfate 2:0e2ef1edf01b 311 png_debug1(1, "in %s retrieval function\n", "pHYs");
destinyXfate 2:0e2ef1edf01b 312 if (res_x != NULL)
destinyXfate 2:0e2ef1edf01b 313 {
destinyXfate 2:0e2ef1edf01b 314 *res_x = info_ptr->x_pixels_per_unit;
destinyXfate 2:0e2ef1edf01b 315 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 316 }
destinyXfate 2:0e2ef1edf01b 317 if (res_y != NULL)
destinyXfate 2:0e2ef1edf01b 318 {
destinyXfate 2:0e2ef1edf01b 319 *res_y = info_ptr->y_pixels_per_unit;
destinyXfate 2:0e2ef1edf01b 320 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 321 }
destinyXfate 2:0e2ef1edf01b 322 if (unit_type != NULL)
destinyXfate 2:0e2ef1edf01b 323 {
destinyXfate 2:0e2ef1edf01b 324 *unit_type = (int)info_ptr->phys_unit_type;
destinyXfate 2:0e2ef1edf01b 325 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 326 if(*unit_type == 1)
destinyXfate 2:0e2ef1edf01b 327 {
destinyXfate 2:0e2ef1edf01b 328 if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
destinyXfate 2:0e2ef1edf01b 329 if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
destinyXfate 2:0e2ef1edf01b 330 }
destinyXfate 2:0e2ef1edf01b 331 }
destinyXfate 2:0e2ef1edf01b 332 }
destinyXfate 2:0e2ef1edf01b 333 return (retval);
destinyXfate 2:0e2ef1edf01b 334 }
destinyXfate 2:0e2ef1edf01b 335 #endif /* PNG_pHYs_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 336 #endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 337
destinyXfate 2:0e2ef1edf01b 338 /* png_get_channels really belongs in here, too, but it's been around longer */
destinyXfate 2:0e2ef1edf01b 339
destinyXfate 2:0e2ef1edf01b 340 #endif /* PNG_EASY_ACCESS_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 341
destinyXfate 2:0e2ef1edf01b 342 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 343 png_get_channels(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 344 {
destinyXfate 2:0e2ef1edf01b 345 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 346 return(info_ptr->channels);
destinyXfate 2:0e2ef1edf01b 347 else
destinyXfate 2:0e2ef1edf01b 348 return (0);
destinyXfate 2:0e2ef1edf01b 349 }
destinyXfate 2:0e2ef1edf01b 350
destinyXfate 2:0e2ef1edf01b 351 png_bytep PNGAPI
destinyXfate 2:0e2ef1edf01b 352 png_get_signature(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 353 {
destinyXfate 2:0e2ef1edf01b 354 if (png_ptr != NULL && info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 355 return(info_ptr->signature);
destinyXfate 2:0e2ef1edf01b 356 else
destinyXfate 2:0e2ef1edf01b 357 return (NULL);
destinyXfate 2:0e2ef1edf01b 358 }
destinyXfate 2:0e2ef1edf01b 359
destinyXfate 2:0e2ef1edf01b 360 #if defined(PNG_bKGD_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 361 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 362 png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 363 png_color_16p *background)
destinyXfate 2:0e2ef1edf01b 364 {
destinyXfate 2:0e2ef1edf01b 365 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
destinyXfate 2:0e2ef1edf01b 366 && background != NULL)
destinyXfate 2:0e2ef1edf01b 367 {
destinyXfate 2:0e2ef1edf01b 368 png_debug1(1, "in %s retrieval function\n", "bKGD");
destinyXfate 2:0e2ef1edf01b 369 *background = &(info_ptr->background);
destinyXfate 2:0e2ef1edf01b 370 return (PNG_INFO_bKGD);
destinyXfate 2:0e2ef1edf01b 371 }
destinyXfate 2:0e2ef1edf01b 372 return (0);
destinyXfate 2:0e2ef1edf01b 373 }
destinyXfate 2:0e2ef1edf01b 374 #endif
destinyXfate 2:0e2ef1edf01b 375
destinyXfate 2:0e2ef1edf01b 376 #if defined(PNG_cHRM_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 377 #ifdef PNG_FLOATING_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 378 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 379 png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 380 double *white_x, double *white_y, double *red_x, double *red_y,
destinyXfate 2:0e2ef1edf01b 381 double *green_x, double *green_y, double *blue_x, double *blue_y)
destinyXfate 2:0e2ef1edf01b 382 {
destinyXfate 2:0e2ef1edf01b 383 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
destinyXfate 2:0e2ef1edf01b 384 {
destinyXfate 2:0e2ef1edf01b 385 png_debug1(1, "in %s retrieval function\n", "cHRM");
destinyXfate 2:0e2ef1edf01b 386 if (white_x != NULL)
destinyXfate 2:0e2ef1edf01b 387 *white_x = (double)info_ptr->x_white;
destinyXfate 2:0e2ef1edf01b 388 if (white_y != NULL)
destinyXfate 2:0e2ef1edf01b 389 *white_y = (double)info_ptr->y_white;
destinyXfate 2:0e2ef1edf01b 390 if (red_x != NULL)
destinyXfate 2:0e2ef1edf01b 391 *red_x = (double)info_ptr->x_red;
destinyXfate 2:0e2ef1edf01b 392 if (red_y != NULL)
destinyXfate 2:0e2ef1edf01b 393 *red_y = (double)info_ptr->y_red;
destinyXfate 2:0e2ef1edf01b 394 if (green_x != NULL)
destinyXfate 2:0e2ef1edf01b 395 *green_x = (double)info_ptr->x_green;
destinyXfate 2:0e2ef1edf01b 396 if (green_y != NULL)
destinyXfate 2:0e2ef1edf01b 397 *green_y = (double)info_ptr->y_green;
destinyXfate 2:0e2ef1edf01b 398 if (blue_x != NULL)
destinyXfate 2:0e2ef1edf01b 399 *blue_x = (double)info_ptr->x_blue;
destinyXfate 2:0e2ef1edf01b 400 if (blue_y != NULL)
destinyXfate 2:0e2ef1edf01b 401 *blue_y = (double)info_ptr->y_blue;
destinyXfate 2:0e2ef1edf01b 402 return (PNG_INFO_cHRM);
destinyXfate 2:0e2ef1edf01b 403 }
destinyXfate 2:0e2ef1edf01b 404 return (0);
destinyXfate 2:0e2ef1edf01b 405 }
destinyXfate 2:0e2ef1edf01b 406 #endif
destinyXfate 2:0e2ef1edf01b 407 #ifdef PNG_FIXED_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 408 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 409 png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 410 png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
destinyXfate 2:0e2ef1edf01b 411 png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
destinyXfate 2:0e2ef1edf01b 412 png_fixed_point *blue_x, png_fixed_point *blue_y)
destinyXfate 2:0e2ef1edf01b 413 {
destinyXfate 2:0e2ef1edf01b 414 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
destinyXfate 2:0e2ef1edf01b 415 {
destinyXfate 2:0e2ef1edf01b 416 png_debug1(1, "in %s retrieval function\n", "cHRM");
destinyXfate 2:0e2ef1edf01b 417 if (white_x != NULL)
destinyXfate 2:0e2ef1edf01b 418 *white_x = info_ptr->int_x_white;
destinyXfate 2:0e2ef1edf01b 419 if (white_y != NULL)
destinyXfate 2:0e2ef1edf01b 420 *white_y = info_ptr->int_y_white;
destinyXfate 2:0e2ef1edf01b 421 if (red_x != NULL)
destinyXfate 2:0e2ef1edf01b 422 *red_x = info_ptr->int_x_red;
destinyXfate 2:0e2ef1edf01b 423 if (red_y != NULL)
destinyXfate 2:0e2ef1edf01b 424 *red_y = info_ptr->int_y_red;
destinyXfate 2:0e2ef1edf01b 425 if (green_x != NULL)
destinyXfate 2:0e2ef1edf01b 426 *green_x = info_ptr->int_x_green;
destinyXfate 2:0e2ef1edf01b 427 if (green_y != NULL)
destinyXfate 2:0e2ef1edf01b 428 *green_y = info_ptr->int_y_green;
destinyXfate 2:0e2ef1edf01b 429 if (blue_x != NULL)
destinyXfate 2:0e2ef1edf01b 430 *blue_x = info_ptr->int_x_blue;
destinyXfate 2:0e2ef1edf01b 431 if (blue_y != NULL)
destinyXfate 2:0e2ef1edf01b 432 *blue_y = info_ptr->int_y_blue;
destinyXfate 2:0e2ef1edf01b 433 return (PNG_INFO_cHRM);
destinyXfate 2:0e2ef1edf01b 434 }
destinyXfate 2:0e2ef1edf01b 435 return (0);
destinyXfate 2:0e2ef1edf01b 436 }
destinyXfate 2:0e2ef1edf01b 437 #endif
destinyXfate 2:0e2ef1edf01b 438 #endif
destinyXfate 2:0e2ef1edf01b 439
destinyXfate 2:0e2ef1edf01b 440 #if defined(PNG_gAMA_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 441 #ifdef PNG_FLOATING_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 442 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 443 png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
destinyXfate 2:0e2ef1edf01b 444 {
destinyXfate 2:0e2ef1edf01b 445 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
destinyXfate 2:0e2ef1edf01b 446 && file_gamma != NULL)
destinyXfate 2:0e2ef1edf01b 447 {
destinyXfate 2:0e2ef1edf01b 448 png_debug1(1, "in %s retrieval function\n", "gAMA");
destinyXfate 2:0e2ef1edf01b 449 *file_gamma = (double)info_ptr->gamma;
destinyXfate 2:0e2ef1edf01b 450 return (PNG_INFO_gAMA);
destinyXfate 2:0e2ef1edf01b 451 }
destinyXfate 2:0e2ef1edf01b 452 return (0);
destinyXfate 2:0e2ef1edf01b 453 }
destinyXfate 2:0e2ef1edf01b 454 #endif
destinyXfate 2:0e2ef1edf01b 455 #ifdef PNG_FIXED_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 456 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 457 png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 458 png_fixed_point *int_file_gamma)
destinyXfate 2:0e2ef1edf01b 459 {
destinyXfate 2:0e2ef1edf01b 460 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
destinyXfate 2:0e2ef1edf01b 461 && int_file_gamma != NULL)
destinyXfate 2:0e2ef1edf01b 462 {
destinyXfate 2:0e2ef1edf01b 463 png_debug1(1, "in %s retrieval function\n", "gAMA");
destinyXfate 2:0e2ef1edf01b 464 *int_file_gamma = info_ptr->int_gamma;
destinyXfate 2:0e2ef1edf01b 465 return (PNG_INFO_gAMA);
destinyXfate 2:0e2ef1edf01b 466 }
destinyXfate 2:0e2ef1edf01b 467 return (0);
destinyXfate 2:0e2ef1edf01b 468 }
destinyXfate 2:0e2ef1edf01b 469 #endif
destinyXfate 2:0e2ef1edf01b 470 #endif
destinyXfate 2:0e2ef1edf01b 471
destinyXfate 2:0e2ef1edf01b 472 #if defined(PNG_sRGB_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 473 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 474 png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
destinyXfate 2:0e2ef1edf01b 475 {
destinyXfate 2:0e2ef1edf01b 476 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
destinyXfate 2:0e2ef1edf01b 477 && file_srgb_intent != NULL)
destinyXfate 2:0e2ef1edf01b 478 {
destinyXfate 2:0e2ef1edf01b 479 png_debug1(1, "in %s retrieval function\n", "sRGB");
destinyXfate 2:0e2ef1edf01b 480 *file_srgb_intent = (int)info_ptr->srgb_intent;
destinyXfate 2:0e2ef1edf01b 481 return (PNG_INFO_sRGB);
destinyXfate 2:0e2ef1edf01b 482 }
destinyXfate 2:0e2ef1edf01b 483 return (0);
destinyXfate 2:0e2ef1edf01b 484 }
destinyXfate 2:0e2ef1edf01b 485 #endif
destinyXfate 2:0e2ef1edf01b 486
destinyXfate 2:0e2ef1edf01b 487 #if defined(PNG_iCCP_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 488 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 489 png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 490 png_charpp name, int *compression_type,
destinyXfate 2:0e2ef1edf01b 491 png_charpp profile, png_uint_32 *proflen)
destinyXfate 2:0e2ef1edf01b 492 {
destinyXfate 2:0e2ef1edf01b 493 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
destinyXfate 2:0e2ef1edf01b 494 && name != NULL && profile != NULL && proflen != NULL)
destinyXfate 2:0e2ef1edf01b 495 {
destinyXfate 2:0e2ef1edf01b 496 png_debug1(1, "in %s retrieval function\n", "iCCP");
destinyXfate 2:0e2ef1edf01b 497 *name = info_ptr->iccp_name;
destinyXfate 2:0e2ef1edf01b 498 *profile = info_ptr->iccp_profile;
destinyXfate 2:0e2ef1edf01b 499 /* compression_type is a dummy so the API won't have to change
destinyXfate 2:0e2ef1edf01b 500 if we introduce multiple compression types later. */
destinyXfate 2:0e2ef1edf01b 501 *proflen = (int)info_ptr->iccp_proflen;
destinyXfate 2:0e2ef1edf01b 502 *compression_type = (int)info_ptr->iccp_compression;
destinyXfate 2:0e2ef1edf01b 503 return (PNG_INFO_iCCP);
destinyXfate 2:0e2ef1edf01b 504 }
destinyXfate 2:0e2ef1edf01b 505 return (0);
destinyXfate 2:0e2ef1edf01b 506 }
destinyXfate 2:0e2ef1edf01b 507 #endif
destinyXfate 2:0e2ef1edf01b 508
destinyXfate 2:0e2ef1edf01b 509 #if defined(PNG_sPLT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 510 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 511 png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 512 png_sPLT_tpp spalettes)
destinyXfate 2:0e2ef1edf01b 513 {
destinyXfate 2:0e2ef1edf01b 514 if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
destinyXfate 2:0e2ef1edf01b 515 *spalettes = info_ptr->splt_palettes;
destinyXfate 2:0e2ef1edf01b 516 return ((png_uint_32)info_ptr->splt_palettes_num);
destinyXfate 2:0e2ef1edf01b 517 }
destinyXfate 2:0e2ef1edf01b 518 #endif
destinyXfate 2:0e2ef1edf01b 519
destinyXfate 2:0e2ef1edf01b 520 #if defined(PNG_hIST_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 521 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 522 png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
destinyXfate 2:0e2ef1edf01b 523 {
destinyXfate 2:0e2ef1edf01b 524 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
destinyXfate 2:0e2ef1edf01b 525 && hist != NULL)
destinyXfate 2:0e2ef1edf01b 526 {
destinyXfate 2:0e2ef1edf01b 527 png_debug1(1, "in %s retrieval function\n", "hIST");
destinyXfate 2:0e2ef1edf01b 528 *hist = info_ptr->hist;
destinyXfate 2:0e2ef1edf01b 529 return (PNG_INFO_hIST);
destinyXfate 2:0e2ef1edf01b 530 }
destinyXfate 2:0e2ef1edf01b 531 return (0);
destinyXfate 2:0e2ef1edf01b 532 }
destinyXfate 2:0e2ef1edf01b 533 #endif
destinyXfate 2:0e2ef1edf01b 534
destinyXfate 2:0e2ef1edf01b 535 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 536 png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 537 png_uint_32 *width, png_uint_32 *height, int *bit_depth,
destinyXfate 2:0e2ef1edf01b 538 int *color_type, int *interlace_type, int *compression_type,
destinyXfate 2:0e2ef1edf01b 539 int *filter_type)
destinyXfate 2:0e2ef1edf01b 540
destinyXfate 2:0e2ef1edf01b 541 {
destinyXfate 2:0e2ef1edf01b 542 if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
destinyXfate 2:0e2ef1edf01b 543 bit_depth != NULL && color_type != NULL)
destinyXfate 2:0e2ef1edf01b 544 {
destinyXfate 2:0e2ef1edf01b 545 png_debug1(1, "in %s retrieval function\n", "IHDR");
destinyXfate 2:0e2ef1edf01b 546 *width = info_ptr->width;
destinyXfate 2:0e2ef1edf01b 547 *height = info_ptr->height;
destinyXfate 2:0e2ef1edf01b 548 *bit_depth = info_ptr->bit_depth;
destinyXfate 2:0e2ef1edf01b 549 if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
destinyXfate 2:0e2ef1edf01b 550 png_error(png_ptr, "Invalid bit depth");
destinyXfate 2:0e2ef1edf01b 551 *color_type = info_ptr->color_type;
destinyXfate 2:0e2ef1edf01b 552 if (info_ptr->color_type > 6)
destinyXfate 2:0e2ef1edf01b 553 png_error(png_ptr, "Invalid color type");
destinyXfate 2:0e2ef1edf01b 554 if (compression_type != NULL)
destinyXfate 2:0e2ef1edf01b 555 *compression_type = info_ptr->compression_type;
destinyXfate 2:0e2ef1edf01b 556 if (filter_type != NULL)
destinyXfate 2:0e2ef1edf01b 557 *filter_type = info_ptr->filter_type;
destinyXfate 2:0e2ef1edf01b 558 if (interlace_type != NULL)
destinyXfate 2:0e2ef1edf01b 559 *interlace_type = info_ptr->interlace_type;
destinyXfate 2:0e2ef1edf01b 560
destinyXfate 2:0e2ef1edf01b 561 /* check for potential overflow of rowbytes */
destinyXfate 2:0e2ef1edf01b 562 if (*width == 0 || *width > PNG_UINT_31_MAX)
destinyXfate 2:0e2ef1edf01b 563 png_error(png_ptr, "Invalid image width");
destinyXfate 2:0e2ef1edf01b 564 if (*height == 0 || *height > PNG_UINT_31_MAX)
destinyXfate 2:0e2ef1edf01b 565 png_error(png_ptr, "Invalid image height");
destinyXfate 2:0e2ef1edf01b 566 if (info_ptr->width > (PNG_UINT_32_MAX
destinyXfate 2:0e2ef1edf01b 567 >> 3) /* 8-byte RGBA pixels */
destinyXfate 2:0e2ef1edf01b 568 - 64 /* bigrowbuf hack */
destinyXfate 2:0e2ef1edf01b 569 - 1 /* filter byte */
destinyXfate 2:0e2ef1edf01b 570 - 7*8 /* rounding of width to multiple of 8 pixels */
destinyXfate 2:0e2ef1edf01b 571 - 8) /* extra max_pixel_depth pad */
destinyXfate 2:0e2ef1edf01b 572 {
destinyXfate 2:0e2ef1edf01b 573 png_warning(png_ptr,
destinyXfate 2:0e2ef1edf01b 574 "Width too large for libpng to process image data.");
destinyXfate 2:0e2ef1edf01b 575 }
destinyXfate 2:0e2ef1edf01b 576 return (1);
destinyXfate 2:0e2ef1edf01b 577 }
destinyXfate 2:0e2ef1edf01b 578 return (0);
destinyXfate 2:0e2ef1edf01b 579 }
destinyXfate 2:0e2ef1edf01b 580
destinyXfate 2:0e2ef1edf01b 581 #if defined(PNG_oFFs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 582 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 583 png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 584 png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
destinyXfate 2:0e2ef1edf01b 585 {
destinyXfate 2:0e2ef1edf01b 586 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
destinyXfate 2:0e2ef1edf01b 587 && offset_x != NULL && offset_y != NULL && unit_type != NULL)
destinyXfate 2:0e2ef1edf01b 588 {
destinyXfate 2:0e2ef1edf01b 589 png_debug1(1, "in %s retrieval function\n", "oFFs");
destinyXfate 2:0e2ef1edf01b 590 *offset_x = info_ptr->x_offset;
destinyXfate 2:0e2ef1edf01b 591 *offset_y = info_ptr->y_offset;
destinyXfate 2:0e2ef1edf01b 592 *unit_type = (int)info_ptr->offset_unit_type;
destinyXfate 2:0e2ef1edf01b 593 return (PNG_INFO_oFFs);
destinyXfate 2:0e2ef1edf01b 594 }
destinyXfate 2:0e2ef1edf01b 595 return (0);
destinyXfate 2:0e2ef1edf01b 596 }
destinyXfate 2:0e2ef1edf01b 597 #endif
destinyXfate 2:0e2ef1edf01b 598
destinyXfate 2:0e2ef1edf01b 599 #if defined(PNG_pCAL_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 600 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 601 png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 602 png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
destinyXfate 2:0e2ef1edf01b 603 png_charp *units, png_charpp *params)
destinyXfate 2:0e2ef1edf01b 604 {
destinyXfate 2:0e2ef1edf01b 605 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
destinyXfate 2:0e2ef1edf01b 606 && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
destinyXfate 2:0e2ef1edf01b 607 nparams != NULL && units != NULL && params != NULL)
destinyXfate 2:0e2ef1edf01b 608 {
destinyXfate 2:0e2ef1edf01b 609 png_debug1(1, "in %s retrieval function\n", "pCAL");
destinyXfate 2:0e2ef1edf01b 610 *purpose = info_ptr->pcal_purpose;
destinyXfate 2:0e2ef1edf01b 611 *X0 = info_ptr->pcal_X0;
destinyXfate 2:0e2ef1edf01b 612 *X1 = info_ptr->pcal_X1;
destinyXfate 2:0e2ef1edf01b 613 *type = (int)info_ptr->pcal_type;
destinyXfate 2:0e2ef1edf01b 614 *nparams = (int)info_ptr->pcal_nparams;
destinyXfate 2:0e2ef1edf01b 615 *units = info_ptr->pcal_units;
destinyXfate 2:0e2ef1edf01b 616 *params = info_ptr->pcal_params;
destinyXfate 2:0e2ef1edf01b 617 return (PNG_INFO_pCAL);
destinyXfate 2:0e2ef1edf01b 618 }
destinyXfate 2:0e2ef1edf01b 619 return (0);
destinyXfate 2:0e2ef1edf01b 620 }
destinyXfate 2:0e2ef1edf01b 621 #endif
destinyXfate 2:0e2ef1edf01b 622
destinyXfate 2:0e2ef1edf01b 623 #if defined(PNG_sCAL_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 624 #ifdef PNG_FLOATING_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 625 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 626 png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 627 int *unit, double *width, double *height)
destinyXfate 2:0e2ef1edf01b 628 {
destinyXfate 2:0e2ef1edf01b 629 if (png_ptr != NULL && info_ptr != NULL &&
destinyXfate 2:0e2ef1edf01b 630 (info_ptr->valid & PNG_INFO_sCAL))
destinyXfate 2:0e2ef1edf01b 631 {
destinyXfate 2:0e2ef1edf01b 632 *unit = info_ptr->scal_unit;
destinyXfate 2:0e2ef1edf01b 633 *width = info_ptr->scal_pixel_width;
destinyXfate 2:0e2ef1edf01b 634 *height = info_ptr->scal_pixel_height;
destinyXfate 2:0e2ef1edf01b 635 return (PNG_INFO_sCAL);
destinyXfate 2:0e2ef1edf01b 636 }
destinyXfate 2:0e2ef1edf01b 637 return(0);
destinyXfate 2:0e2ef1edf01b 638 }
destinyXfate 2:0e2ef1edf01b 639 #else
destinyXfate 2:0e2ef1edf01b 640 #ifdef PNG_FIXED_POINT_SUPPORTED
destinyXfate 2:0e2ef1edf01b 641 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 642 png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 643 int *unit, png_charpp width, png_charpp height)
destinyXfate 2:0e2ef1edf01b 644 {
destinyXfate 2:0e2ef1edf01b 645 if (png_ptr != NULL && info_ptr != NULL &&
destinyXfate 2:0e2ef1edf01b 646 (info_ptr->valid & PNG_INFO_sCAL))
destinyXfate 2:0e2ef1edf01b 647 {
destinyXfate 2:0e2ef1edf01b 648 *unit = info_ptr->scal_unit;
destinyXfate 2:0e2ef1edf01b 649 *width = info_ptr->scal_s_width;
destinyXfate 2:0e2ef1edf01b 650 *height = info_ptr->scal_s_height;
destinyXfate 2:0e2ef1edf01b 651 return (PNG_INFO_sCAL);
destinyXfate 2:0e2ef1edf01b 652 }
destinyXfate 2:0e2ef1edf01b 653 return(0);
destinyXfate 2:0e2ef1edf01b 654 }
destinyXfate 2:0e2ef1edf01b 655 #endif
destinyXfate 2:0e2ef1edf01b 656 #endif
destinyXfate 2:0e2ef1edf01b 657 #endif
destinyXfate 2:0e2ef1edf01b 658
destinyXfate 2:0e2ef1edf01b 659 #if defined(PNG_pHYs_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 660 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 661 png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 662 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
destinyXfate 2:0e2ef1edf01b 663 {
destinyXfate 2:0e2ef1edf01b 664 png_uint_32 retval = 0;
destinyXfate 2:0e2ef1edf01b 665
destinyXfate 2:0e2ef1edf01b 666 if (png_ptr != NULL && info_ptr != NULL &&
destinyXfate 2:0e2ef1edf01b 667 (info_ptr->valid & PNG_INFO_pHYs))
destinyXfate 2:0e2ef1edf01b 668 {
destinyXfate 2:0e2ef1edf01b 669 png_debug1(1, "in %s retrieval function\n", "pHYs");
destinyXfate 2:0e2ef1edf01b 670 if (res_x != NULL)
destinyXfate 2:0e2ef1edf01b 671 {
destinyXfate 2:0e2ef1edf01b 672 *res_x = info_ptr->x_pixels_per_unit;
destinyXfate 2:0e2ef1edf01b 673 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 674 }
destinyXfate 2:0e2ef1edf01b 675 if (res_y != NULL)
destinyXfate 2:0e2ef1edf01b 676 {
destinyXfate 2:0e2ef1edf01b 677 *res_y = info_ptr->y_pixels_per_unit;
destinyXfate 2:0e2ef1edf01b 678 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 679 }
destinyXfate 2:0e2ef1edf01b 680 if (unit_type != NULL)
destinyXfate 2:0e2ef1edf01b 681 {
destinyXfate 2:0e2ef1edf01b 682 *unit_type = (int)info_ptr->phys_unit_type;
destinyXfate 2:0e2ef1edf01b 683 retval |= PNG_INFO_pHYs;
destinyXfate 2:0e2ef1edf01b 684 }
destinyXfate 2:0e2ef1edf01b 685 }
destinyXfate 2:0e2ef1edf01b 686 return (retval);
destinyXfate 2:0e2ef1edf01b 687 }
destinyXfate 2:0e2ef1edf01b 688 #endif
destinyXfate 2:0e2ef1edf01b 689
destinyXfate 2:0e2ef1edf01b 690 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 691 png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
destinyXfate 2:0e2ef1edf01b 692 int *num_palette)
destinyXfate 2:0e2ef1edf01b 693 {
destinyXfate 2:0e2ef1edf01b 694 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
destinyXfate 2:0e2ef1edf01b 695 && palette != NULL)
destinyXfate 2:0e2ef1edf01b 696 {
destinyXfate 2:0e2ef1edf01b 697 png_debug1(1, "in %s retrieval function\n", "PLTE");
destinyXfate 2:0e2ef1edf01b 698 *palette = info_ptr->palette;
destinyXfate 2:0e2ef1edf01b 699 *num_palette = info_ptr->num_palette;
destinyXfate 2:0e2ef1edf01b 700 png_debug1(3, "num_palette = %d\n", *num_palette);
destinyXfate 2:0e2ef1edf01b 701 return (PNG_INFO_PLTE);
destinyXfate 2:0e2ef1edf01b 702 }
destinyXfate 2:0e2ef1edf01b 703 return (0);
destinyXfate 2:0e2ef1edf01b 704 }
destinyXfate 2:0e2ef1edf01b 705
destinyXfate 2:0e2ef1edf01b 706 #if defined(PNG_sBIT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 707 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 708 png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
destinyXfate 2:0e2ef1edf01b 709 {
destinyXfate 2:0e2ef1edf01b 710 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
destinyXfate 2:0e2ef1edf01b 711 && sig_bit != NULL)
destinyXfate 2:0e2ef1edf01b 712 {
destinyXfate 2:0e2ef1edf01b 713 png_debug1(1, "in %s retrieval function\n", "sBIT");
destinyXfate 2:0e2ef1edf01b 714 *sig_bit = &(info_ptr->sig_bit);
destinyXfate 2:0e2ef1edf01b 715 return (PNG_INFO_sBIT);
destinyXfate 2:0e2ef1edf01b 716 }
destinyXfate 2:0e2ef1edf01b 717 return (0);
destinyXfate 2:0e2ef1edf01b 718 }
destinyXfate 2:0e2ef1edf01b 719 #endif
destinyXfate 2:0e2ef1edf01b 720
destinyXfate 2:0e2ef1edf01b 721 #if defined(PNG_TEXT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 722 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 723 png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
destinyXfate 2:0e2ef1edf01b 724 int *num_text)
destinyXfate 2:0e2ef1edf01b 725 {
destinyXfate 2:0e2ef1edf01b 726 if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
destinyXfate 2:0e2ef1edf01b 727 {
destinyXfate 2:0e2ef1edf01b 728 png_debug1(1, "in %s retrieval function\n",
destinyXfate 2:0e2ef1edf01b 729 (png_ptr->chunk_name[0] == '\0' ? "text"
destinyXfate 2:0e2ef1edf01b 730 : (png_const_charp)png_ptr->chunk_name));
destinyXfate 2:0e2ef1edf01b 731 if (text_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 732 *text_ptr = info_ptr->text;
destinyXfate 2:0e2ef1edf01b 733 if (num_text != NULL)
destinyXfate 2:0e2ef1edf01b 734 *num_text = info_ptr->num_text;
destinyXfate 2:0e2ef1edf01b 735 return ((png_uint_32)info_ptr->num_text);
destinyXfate 2:0e2ef1edf01b 736 }
destinyXfate 2:0e2ef1edf01b 737 if (num_text != NULL)
destinyXfate 2:0e2ef1edf01b 738 *num_text = 0;
destinyXfate 2:0e2ef1edf01b 739 return(0);
destinyXfate 2:0e2ef1edf01b 740 }
destinyXfate 2:0e2ef1edf01b 741 #endif
destinyXfate 2:0e2ef1edf01b 742
destinyXfate 2:0e2ef1edf01b 743 #if defined(PNG_tIME_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 744 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 745 png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
destinyXfate 2:0e2ef1edf01b 746 {
destinyXfate 2:0e2ef1edf01b 747 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
destinyXfate 2:0e2ef1edf01b 748 && mod_time != NULL)
destinyXfate 2:0e2ef1edf01b 749 {
destinyXfate 2:0e2ef1edf01b 750 png_debug1(1, "in %s retrieval function\n", "tIME");
destinyXfate 2:0e2ef1edf01b 751 *mod_time = &(info_ptr->mod_time);
destinyXfate 2:0e2ef1edf01b 752 return (PNG_INFO_tIME);
destinyXfate 2:0e2ef1edf01b 753 }
destinyXfate 2:0e2ef1edf01b 754 return (0);
destinyXfate 2:0e2ef1edf01b 755 }
destinyXfate 2:0e2ef1edf01b 756 #endif
destinyXfate 2:0e2ef1edf01b 757
destinyXfate 2:0e2ef1edf01b 758 #if defined(PNG_tRNS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 759 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 760 png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 761 png_bytep *trans, int *num_trans, png_color_16p *trans_values)
destinyXfate 2:0e2ef1edf01b 762 {
destinyXfate 2:0e2ef1edf01b 763 png_uint_32 retval = 0;
destinyXfate 2:0e2ef1edf01b 764 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
destinyXfate 2:0e2ef1edf01b 765 {
destinyXfate 2:0e2ef1edf01b 766 png_debug1(1, "in %s retrieval function\n", "tRNS");
destinyXfate 2:0e2ef1edf01b 767 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
destinyXfate 2:0e2ef1edf01b 768 {
destinyXfate 2:0e2ef1edf01b 769 if (trans != NULL)
destinyXfate 2:0e2ef1edf01b 770 {
destinyXfate 2:0e2ef1edf01b 771 *trans = info_ptr->trans;
destinyXfate 2:0e2ef1edf01b 772 retval |= PNG_INFO_tRNS;
destinyXfate 2:0e2ef1edf01b 773 }
destinyXfate 2:0e2ef1edf01b 774 if (trans_values != NULL)
destinyXfate 2:0e2ef1edf01b 775 *trans_values = &(info_ptr->trans_values);
destinyXfate 2:0e2ef1edf01b 776 }
destinyXfate 2:0e2ef1edf01b 777 else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
destinyXfate 2:0e2ef1edf01b 778 {
destinyXfate 2:0e2ef1edf01b 779 if (trans_values != NULL)
destinyXfate 2:0e2ef1edf01b 780 {
destinyXfate 2:0e2ef1edf01b 781 *trans_values = &(info_ptr->trans_values);
destinyXfate 2:0e2ef1edf01b 782 retval |= PNG_INFO_tRNS;
destinyXfate 2:0e2ef1edf01b 783 }
destinyXfate 2:0e2ef1edf01b 784 if(trans != NULL)
destinyXfate 2:0e2ef1edf01b 785 *trans = NULL;
destinyXfate 2:0e2ef1edf01b 786 }
destinyXfate 2:0e2ef1edf01b 787 if(num_trans != NULL)
destinyXfate 2:0e2ef1edf01b 788 {
destinyXfate 2:0e2ef1edf01b 789 *num_trans = info_ptr->num_trans;
destinyXfate 2:0e2ef1edf01b 790 retval |= PNG_INFO_tRNS;
destinyXfate 2:0e2ef1edf01b 791 }
destinyXfate 2:0e2ef1edf01b 792 }
destinyXfate 2:0e2ef1edf01b 793 return (retval);
destinyXfate 2:0e2ef1edf01b 794 }
destinyXfate 2:0e2ef1edf01b 795 #endif
destinyXfate 2:0e2ef1edf01b 796
destinyXfate 2:0e2ef1edf01b 797 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 798 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 799 png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 800 png_unknown_chunkpp unknowns)
destinyXfate 2:0e2ef1edf01b 801 {
destinyXfate 2:0e2ef1edf01b 802 if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
destinyXfate 2:0e2ef1edf01b 803 *unknowns = info_ptr->unknown_chunks;
destinyXfate 2:0e2ef1edf01b 804 return ((png_uint_32)info_ptr->unknown_chunks_num);
destinyXfate 2:0e2ef1edf01b 805 }
destinyXfate 2:0e2ef1edf01b 806 #endif
destinyXfate 2:0e2ef1edf01b 807
destinyXfate 2:0e2ef1edf01b 808 #if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 809 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 810 png_get_rgb_to_gray_status (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 811 {
destinyXfate 2:0e2ef1edf01b 812 return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0);
destinyXfate 2:0e2ef1edf01b 813 }
destinyXfate 2:0e2ef1edf01b 814 #endif
destinyXfate 2:0e2ef1edf01b 815
destinyXfate 2:0e2ef1edf01b 816 #if defined(PNG_USER_CHUNKS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 817 png_voidp PNGAPI
destinyXfate 2:0e2ef1edf01b 818 png_get_user_chunk_ptr(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 819 {
destinyXfate 2:0e2ef1edf01b 820 return (png_ptr? png_ptr->user_chunk_ptr : NULL);
destinyXfate 2:0e2ef1edf01b 821 }
destinyXfate 2:0e2ef1edf01b 822 #endif
destinyXfate 2:0e2ef1edf01b 823
destinyXfate 2:0e2ef1edf01b 824 #ifdef PNG_WRITE_SUPPORTED
destinyXfate 2:0e2ef1edf01b 825 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 826 png_get_compression_buffer_size(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 827 {
destinyXfate 2:0e2ef1edf01b 828 return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
destinyXfate 2:0e2ef1edf01b 829 }
destinyXfate 2:0e2ef1edf01b 830 #endif
destinyXfate 2:0e2ef1edf01b 831
destinyXfate 2:0e2ef1edf01b 832 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
destinyXfate 2:0e2ef1edf01b 833 #ifndef PNG_1_0_X
destinyXfate 2:0e2ef1edf01b 834 /* this function was added to libpng 1.2.0 and should exist by default */
destinyXfate 2:0e2ef1edf01b 835 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 836 png_get_asm_flags (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 837 {
destinyXfate 2:0e2ef1edf01b 838 #ifdef PNG_MMX_CODE_SUPPORTED
destinyXfate 2:0e2ef1edf01b 839 return (png_uint_32)(png_ptr? png_ptr->asm_flags : 0L);
destinyXfate 2:0e2ef1edf01b 840 #else
destinyXfate 2:0e2ef1edf01b 841 return (png_ptr? 0L: 0L);
destinyXfate 2:0e2ef1edf01b 842 #endif
destinyXfate 2:0e2ef1edf01b 843 }
destinyXfate 2:0e2ef1edf01b 844
destinyXfate 2:0e2ef1edf01b 845 /* this function was added to libpng 1.2.0 and should exist by default */
destinyXfate 2:0e2ef1edf01b 846 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 847 png_get_asm_flagmask (int flag_select)
destinyXfate 2:0e2ef1edf01b 848 {
destinyXfate 2:0e2ef1edf01b 849 #ifdef PNG_MMX_CODE_SUPPORTED
destinyXfate 2:0e2ef1edf01b 850 png_uint_32 settable_asm_flags = 0;
destinyXfate 2:0e2ef1edf01b 851
destinyXfate 2:0e2ef1edf01b 852 if (flag_select & PNG_SELECT_READ)
destinyXfate 2:0e2ef1edf01b 853 settable_asm_flags |=
destinyXfate 2:0e2ef1edf01b 854 PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
destinyXfate 2:0e2ef1edf01b 855 PNG_ASM_FLAG_MMX_READ_INTERLACE |
destinyXfate 2:0e2ef1edf01b 856 PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
destinyXfate 2:0e2ef1edf01b 857 PNG_ASM_FLAG_MMX_READ_FILTER_UP |
destinyXfate 2:0e2ef1edf01b 858 PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
destinyXfate 2:0e2ef1edf01b 859 PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
destinyXfate 2:0e2ef1edf01b 860 /* no non-MMX flags yet */
destinyXfate 2:0e2ef1edf01b 861
destinyXfate 2:0e2ef1edf01b 862 #if 0
destinyXfate 2:0e2ef1edf01b 863 /* GRR: no write-flags yet, either, but someday... */
destinyXfate 2:0e2ef1edf01b 864 if (flag_select & PNG_SELECT_WRITE)
destinyXfate 2:0e2ef1edf01b 865 settable_asm_flags |=
destinyXfate 2:0e2ef1edf01b 866 PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
destinyXfate 2:0e2ef1edf01b 867 #endif /* 0 */
destinyXfate 2:0e2ef1edf01b 868
destinyXfate 2:0e2ef1edf01b 869 return settable_asm_flags; /* _theoretically_ settable capabilities only */
destinyXfate 2:0e2ef1edf01b 870 #else
destinyXfate 2:0e2ef1edf01b 871 return (0L);
destinyXfate 2:0e2ef1edf01b 872 #endif /* PNG_MMX_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 873 }
destinyXfate 2:0e2ef1edf01b 874
destinyXfate 2:0e2ef1edf01b 875
destinyXfate 2:0e2ef1edf01b 876 /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 877 /* this function was added to libpng 1.2.0 */
destinyXfate 2:0e2ef1edf01b 878 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 879 png_get_mmx_flagmask (int flag_select, int *compilerID)
destinyXfate 2:0e2ef1edf01b 880 {
destinyXfate 2:0e2ef1edf01b 881 #if defined(PNG_MMX_CODE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 882 png_uint_32 settable_mmx_flags = 0;
destinyXfate 2:0e2ef1edf01b 883
destinyXfate 2:0e2ef1edf01b 884 if (flag_select & PNG_SELECT_READ)
destinyXfate 2:0e2ef1edf01b 885 settable_mmx_flags |=
destinyXfate 2:0e2ef1edf01b 886 PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
destinyXfate 2:0e2ef1edf01b 887 PNG_ASM_FLAG_MMX_READ_INTERLACE |
destinyXfate 2:0e2ef1edf01b 888 PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
destinyXfate 2:0e2ef1edf01b 889 PNG_ASM_FLAG_MMX_READ_FILTER_UP |
destinyXfate 2:0e2ef1edf01b 890 PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
destinyXfate 2:0e2ef1edf01b 891 PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
destinyXfate 2:0e2ef1edf01b 892 #if 0
destinyXfate 2:0e2ef1edf01b 893 /* GRR: no MMX write support yet, but someday... */
destinyXfate 2:0e2ef1edf01b 894 if (flag_select & PNG_SELECT_WRITE)
destinyXfate 2:0e2ef1edf01b 895 settable_mmx_flags |=
destinyXfate 2:0e2ef1edf01b 896 PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
destinyXfate 2:0e2ef1edf01b 897 #endif /* 0 */
destinyXfate 2:0e2ef1edf01b 898
destinyXfate 2:0e2ef1edf01b 899 if (compilerID != NULL) {
destinyXfate 2:0e2ef1edf01b 900 #ifdef PNG_USE_PNGVCRD
destinyXfate 2:0e2ef1edf01b 901 *compilerID = 1; /* MSVC */
destinyXfate 2:0e2ef1edf01b 902 #else
destinyXfate 2:0e2ef1edf01b 903 #ifdef PNG_USE_PNGGCCRD
destinyXfate 2:0e2ef1edf01b 904 *compilerID = 2; /* gcc/gas */
destinyXfate 2:0e2ef1edf01b 905 #else
destinyXfate 2:0e2ef1edf01b 906 *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
destinyXfate 2:0e2ef1edf01b 907 #endif
destinyXfate 2:0e2ef1edf01b 908 #endif
destinyXfate 2:0e2ef1edf01b 909 }
destinyXfate 2:0e2ef1edf01b 910
destinyXfate 2:0e2ef1edf01b 911 return settable_mmx_flags; /* _theoretically_ settable capabilities only */
destinyXfate 2:0e2ef1edf01b 912 #else
destinyXfate 2:0e2ef1edf01b 913 return (0L);
destinyXfate 2:0e2ef1edf01b 914 #endif /* ?PNG_MMX_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 915 }
destinyXfate 2:0e2ef1edf01b 916
destinyXfate 2:0e2ef1edf01b 917 /* this function was added to libpng 1.2.0 */
destinyXfate 2:0e2ef1edf01b 918 png_byte PNGAPI
destinyXfate 2:0e2ef1edf01b 919 png_get_mmx_bitdepth_threshold (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 920 {
destinyXfate 2:0e2ef1edf01b 921 #if defined(PNG_MMX_CODE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 922 return (png_byte)(png_ptr? png_ptr->mmx_bitdepth_threshold : 0);
destinyXfate 2:0e2ef1edf01b 923 #else
destinyXfate 2:0e2ef1edf01b 924 return (png_ptr? 0: 0);
destinyXfate 2:0e2ef1edf01b 925 #endif /* ?PNG_MMX_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 926 }
destinyXfate 2:0e2ef1edf01b 927
destinyXfate 2:0e2ef1edf01b 928 /* this function was added to libpng 1.2.0 */
destinyXfate 2:0e2ef1edf01b 929 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 930 png_get_mmx_rowbytes_threshold (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 931 {
destinyXfate 2:0e2ef1edf01b 932 #if defined(PNG_MMX_CODE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 933 return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
destinyXfate 2:0e2ef1edf01b 934 #else
destinyXfate 2:0e2ef1edf01b 935 return (png_ptr? 0L: 0L);
destinyXfate 2:0e2ef1edf01b 936 #endif /* ?PNG_MMX_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 937 }
destinyXfate 2:0e2ef1edf01b 938 #endif /* ?PNG_1_0_X */
destinyXfate 2:0e2ef1edf01b 939 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 940
destinyXfate 2:0e2ef1edf01b 941 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
destinyXfate 2:0e2ef1edf01b 942 /* these functions were added to libpng 1.2.6 */
destinyXfate 2:0e2ef1edf01b 943 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 944 png_get_user_width_max (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 945 {
destinyXfate 2:0e2ef1edf01b 946 return (png_ptr? png_ptr->user_width_max : 0);
destinyXfate 2:0e2ef1edf01b 947 }
destinyXfate 2:0e2ef1edf01b 948 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 949 png_get_user_height_max (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 950 {
destinyXfate 2:0e2ef1edf01b 951 return (png_ptr? png_ptr->user_height_max : 0);
destinyXfate 2:0e2ef1edf01b 952 }
destinyXfate 2:0e2ef1edf01b 953 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 954
destinyXfate 2:0e2ef1edf01b 955 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 956