Wei Chang Shen / DMemWin

Dependencies:   emwin_lib

Fork of DMemWin by Embedded Artists

png/png.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 /* png.c - location for general purpose libpng functions
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 #define PNG_NO_EXTERN
destinyXfate 2:0e2ef1edf01b 13 #include "png.h"
destinyXfate 2:0e2ef1edf01b 14
destinyXfate 2:0e2ef1edf01b 15 /* Generate a compiler error if there is an old png.h in the search path. */
destinyXfate 2:0e2ef1edf01b 16 typedef version_1_2_15 Your_png_h_is_not_version_1_2_15;
destinyXfate 2:0e2ef1edf01b 17
destinyXfate 2:0e2ef1edf01b 18 /* Version information for C files. This had better match the version
destinyXfate 2:0e2ef1edf01b 19 * string defined in png.h. */
destinyXfate 2:0e2ef1edf01b 20
destinyXfate 2:0e2ef1edf01b 21 #ifdef PNG_USE_GLOBAL_ARRAYS
destinyXfate 2:0e2ef1edf01b 22 /* png_libpng_ver was changed to a function in version 1.0.5c */
destinyXfate 2:0e2ef1edf01b 23 const char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING;
destinyXfate 2:0e2ef1edf01b 24
destinyXfate 2:0e2ef1edf01b 25 #ifdef PNG_READ_SUPPORTED
destinyXfate 2:0e2ef1edf01b 26
destinyXfate 2:0e2ef1edf01b 27 /* png_sig was changed to a function in version 1.0.5c */
destinyXfate 2:0e2ef1edf01b 28 /* Place to hold the signature string for a PNG file. */
destinyXfate 2:0e2ef1edf01b 29 const png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
destinyXfate 2:0e2ef1edf01b 30 #endif /* PNG_READ_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 31
destinyXfate 2:0e2ef1edf01b 32 /* Invoke global declarations for constant strings for known chunk types */
destinyXfate 2:0e2ef1edf01b 33 PNG_IHDR;
destinyXfate 2:0e2ef1edf01b 34 PNG_IDAT;
destinyXfate 2:0e2ef1edf01b 35 PNG_IEND;
destinyXfate 2:0e2ef1edf01b 36 PNG_PLTE;
destinyXfate 2:0e2ef1edf01b 37 PNG_bKGD;
destinyXfate 2:0e2ef1edf01b 38 PNG_cHRM;
destinyXfate 2:0e2ef1edf01b 39 PNG_gAMA;
destinyXfate 2:0e2ef1edf01b 40 PNG_hIST;
destinyXfate 2:0e2ef1edf01b 41 PNG_iCCP;
destinyXfate 2:0e2ef1edf01b 42 PNG_iTXt;
destinyXfate 2:0e2ef1edf01b 43 PNG_oFFs;
destinyXfate 2:0e2ef1edf01b 44 PNG_pCAL;
destinyXfate 2:0e2ef1edf01b 45 PNG_sCAL;
destinyXfate 2:0e2ef1edf01b 46 PNG_pHYs;
destinyXfate 2:0e2ef1edf01b 47 PNG_sBIT;
destinyXfate 2:0e2ef1edf01b 48 PNG_sPLT;
destinyXfate 2:0e2ef1edf01b 49 PNG_sRGB;
destinyXfate 2:0e2ef1edf01b 50 PNG_tEXt;
destinyXfate 2:0e2ef1edf01b 51 PNG_tIME;
destinyXfate 2:0e2ef1edf01b 52 PNG_tRNS;
destinyXfate 2:0e2ef1edf01b 53 PNG_zTXt;
destinyXfate 2:0e2ef1edf01b 54
destinyXfate 2:0e2ef1edf01b 55 #ifdef PNG_READ_SUPPORTED
destinyXfate 2:0e2ef1edf01b 56 /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
destinyXfate 2:0e2ef1edf01b 57
destinyXfate 2:0e2ef1edf01b 58 /* start of interlace block */
destinyXfate 2:0e2ef1edf01b 59 const int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
destinyXfate 2:0e2ef1edf01b 60
destinyXfate 2:0e2ef1edf01b 61 /* offset to next interlace block */
destinyXfate 2:0e2ef1edf01b 62 const int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
destinyXfate 2:0e2ef1edf01b 63
destinyXfate 2:0e2ef1edf01b 64 /* start of interlace block in the y direction */
destinyXfate 2:0e2ef1edf01b 65 const int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
destinyXfate 2:0e2ef1edf01b 66
destinyXfate 2:0e2ef1edf01b 67 /* offset to next interlace block in the y direction */
destinyXfate 2:0e2ef1edf01b 68 const int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
destinyXfate 2:0e2ef1edf01b 69
destinyXfate 2:0e2ef1edf01b 70 /* width of interlace block (used in assembler routines only) */
destinyXfate 2:0e2ef1edf01b 71 #ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
destinyXfate 2:0e2ef1edf01b 72 const int FARDATA png_pass_width[] = {8, 4, 4, 2, 2, 1, 1};
destinyXfate 2:0e2ef1edf01b 73 #endif
destinyXfate 2:0e2ef1edf01b 74
destinyXfate 2:0e2ef1edf01b 75 /* Height of interlace block. This is not currently used - if you need
destinyXfate 2:0e2ef1edf01b 76 * it, uncomment it here and in png.h
destinyXfate 2:0e2ef1edf01b 77 const int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
destinyXfate 2:0e2ef1edf01b 78 */
destinyXfate 2:0e2ef1edf01b 79
destinyXfate 2:0e2ef1edf01b 80 /* Mask to determine which pixels are valid in a pass */
destinyXfate 2:0e2ef1edf01b 81 const int FARDATA png_pass_mask[] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
destinyXfate 2:0e2ef1edf01b 82
destinyXfate 2:0e2ef1edf01b 83 /* Mask to determine which pixels to overwrite while displaying */
destinyXfate 2:0e2ef1edf01b 84 const int FARDATA png_pass_dsp_mask[]
destinyXfate 2:0e2ef1edf01b 85 = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
destinyXfate 2:0e2ef1edf01b 86
destinyXfate 2:0e2ef1edf01b 87 #endif /* PNG_READ_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 88 #endif /* PNG_USE_GLOBAL_ARRAYS */
destinyXfate 2:0e2ef1edf01b 89
destinyXfate 2:0e2ef1edf01b 90 /* Tells libpng that we have already handled the first "num_bytes" bytes
destinyXfate 2:0e2ef1edf01b 91 * of the PNG file signature. If the PNG data is embedded into another
destinyXfate 2:0e2ef1edf01b 92 * stream we can set num_bytes = 8 so that libpng will not attempt to read
destinyXfate 2:0e2ef1edf01b 93 * or write any of the magic bytes before it starts on the IHDR.
destinyXfate 2:0e2ef1edf01b 94 */
destinyXfate 2:0e2ef1edf01b 95
destinyXfate 2:0e2ef1edf01b 96 #ifdef PNG_READ_SUPPORTED
destinyXfate 2:0e2ef1edf01b 97 void PNGAPI
destinyXfate 2:0e2ef1edf01b 98 png_set_sig_bytes(png_structp png_ptr, int num_bytes)
destinyXfate 2:0e2ef1edf01b 99 {
destinyXfate 2:0e2ef1edf01b 100 if(png_ptr == NULL) return;
destinyXfate 2:0e2ef1edf01b 101 png_debug(1, "in png_set_sig_bytes\n");
destinyXfate 2:0e2ef1edf01b 102 if (num_bytes > 8)
destinyXfate 2:0e2ef1edf01b 103 png_error(png_ptr, "Too many bytes for PNG signature.");
destinyXfate 2:0e2ef1edf01b 104
destinyXfate 2:0e2ef1edf01b 105 png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes);
destinyXfate 2:0e2ef1edf01b 106 }
destinyXfate 2:0e2ef1edf01b 107
destinyXfate 2:0e2ef1edf01b 108 /* Checks whether the supplied bytes match the PNG signature. We allow
destinyXfate 2:0e2ef1edf01b 109 * checking less than the full 8-byte signature so that those apps that
destinyXfate 2:0e2ef1edf01b 110 * already read the first few bytes of a file to determine the file type
destinyXfate 2:0e2ef1edf01b 111 * can simply check the remaining bytes for extra assurance. Returns
destinyXfate 2:0e2ef1edf01b 112 * an integer less than, equal to, or greater than zero if sig is found,
destinyXfate 2:0e2ef1edf01b 113 * respectively, to be less than, to match, or be greater than the correct
destinyXfate 2:0e2ef1edf01b 114 * PNG signature (this is the same behaviour as strcmp, memcmp, etc).
destinyXfate 2:0e2ef1edf01b 115 */
destinyXfate 2:0e2ef1edf01b 116 int PNGAPI
destinyXfate 2:0e2ef1edf01b 117 png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
destinyXfate 2:0e2ef1edf01b 118 {
destinyXfate 2:0e2ef1edf01b 119 png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
destinyXfate 2:0e2ef1edf01b 120 if (num_to_check > 8)
destinyXfate 2:0e2ef1edf01b 121 num_to_check = 8;
destinyXfate 2:0e2ef1edf01b 122 else if (num_to_check < 1)
destinyXfate 2:0e2ef1edf01b 123 return (-1);
destinyXfate 2:0e2ef1edf01b 124
destinyXfate 2:0e2ef1edf01b 125 if (start > 7)
destinyXfate 2:0e2ef1edf01b 126 return (-1);
destinyXfate 2:0e2ef1edf01b 127
destinyXfate 2:0e2ef1edf01b 128 if (start + num_to_check > 8)
destinyXfate 2:0e2ef1edf01b 129 num_to_check = 8 - start;
destinyXfate 2:0e2ef1edf01b 130
destinyXfate 2:0e2ef1edf01b 131 return ((int)(png_memcmp(&sig[start], &png_signature[start], num_to_check)));
destinyXfate 2:0e2ef1edf01b 132 }
destinyXfate 2:0e2ef1edf01b 133
destinyXfate 2:0e2ef1edf01b 134 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
destinyXfate 2:0e2ef1edf01b 135 /* (Obsolete) function to check signature bytes. It does not allow one
destinyXfate 2:0e2ef1edf01b 136 * to check a partial signature. This function might be removed in the
destinyXfate 2:0e2ef1edf01b 137 * future - use png_sig_cmp(). Returns true (nonzero) if the file is a PNG.
destinyXfate 2:0e2ef1edf01b 138 */
destinyXfate 2:0e2ef1edf01b 139 int PNGAPI
destinyXfate 2:0e2ef1edf01b 140 png_check_sig(png_bytep sig, int num)
destinyXfate 2:0e2ef1edf01b 141 {
destinyXfate 2:0e2ef1edf01b 142 return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num));
destinyXfate 2:0e2ef1edf01b 143 }
destinyXfate 2:0e2ef1edf01b 144 #endif
destinyXfate 2:0e2ef1edf01b 145 #endif /* PNG_READ_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 146
destinyXfate 2:0e2ef1edf01b 147 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 148 /* Function to allocate memory for zlib and clear it to 0. */
destinyXfate 2:0e2ef1edf01b 149 #ifdef PNG_1_0_X
destinyXfate 2:0e2ef1edf01b 150 voidpf PNGAPI
destinyXfate 2:0e2ef1edf01b 151 #else
destinyXfate 2:0e2ef1edf01b 152 voidpf /* private */
destinyXfate 2:0e2ef1edf01b 153 #endif
destinyXfate 2:0e2ef1edf01b 154 png_zalloc(voidpf png_ptr, uInt items, uInt size)
destinyXfate 2:0e2ef1edf01b 155 {
destinyXfate 2:0e2ef1edf01b 156 png_voidp ptr;
destinyXfate 2:0e2ef1edf01b 157 png_structp p=(png_structp)png_ptr;
destinyXfate 2:0e2ef1edf01b 158 png_uint_32 save_flags=p->flags;
destinyXfate 2:0e2ef1edf01b 159 png_uint_32 num_bytes;
destinyXfate 2:0e2ef1edf01b 160
destinyXfate 2:0e2ef1edf01b 161 if(png_ptr == NULL) return (NULL);
destinyXfate 2:0e2ef1edf01b 162 if (items > PNG_UINT_32_MAX/size)
destinyXfate 2:0e2ef1edf01b 163 {
destinyXfate 2:0e2ef1edf01b 164 png_warning (p, "Potential overflow in png_zalloc()");
destinyXfate 2:0e2ef1edf01b 165 return (NULL);
destinyXfate 2:0e2ef1edf01b 166 }
destinyXfate 2:0e2ef1edf01b 167 num_bytes = (png_uint_32)items * size;
destinyXfate 2:0e2ef1edf01b 168
destinyXfate 2:0e2ef1edf01b 169 p->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
destinyXfate 2:0e2ef1edf01b 170 ptr = (png_voidp)png_malloc((png_structp)png_ptr, num_bytes);
destinyXfate 2:0e2ef1edf01b 171 p->flags=save_flags;
destinyXfate 2:0e2ef1edf01b 172
destinyXfate 2:0e2ef1edf01b 173 #if defined(PNG_1_0_X) && !defined(PNG_NO_ZALLOC_ZERO)
destinyXfate 2:0e2ef1edf01b 174 if (ptr == NULL)
destinyXfate 2:0e2ef1edf01b 175 return ((voidpf)ptr);
destinyXfate 2:0e2ef1edf01b 176
destinyXfate 2:0e2ef1edf01b 177 if (num_bytes > (png_uint_32)0x8000L)
destinyXfate 2:0e2ef1edf01b 178 {
destinyXfate 2:0e2ef1edf01b 179 png_memset(ptr, 0, (png_size_t)0x8000L);
destinyXfate 2:0e2ef1edf01b 180 png_memset((png_bytep)ptr + (png_size_t)0x8000L, 0,
destinyXfate 2:0e2ef1edf01b 181 (png_size_t)(num_bytes - (png_uint_32)0x8000L));
destinyXfate 2:0e2ef1edf01b 182 }
destinyXfate 2:0e2ef1edf01b 183 else
destinyXfate 2:0e2ef1edf01b 184 {
destinyXfate 2:0e2ef1edf01b 185 png_memset(ptr, 0, (png_size_t)num_bytes);
destinyXfate 2:0e2ef1edf01b 186 }
destinyXfate 2:0e2ef1edf01b 187 #endif
destinyXfate 2:0e2ef1edf01b 188 return ((voidpf)ptr);
destinyXfate 2:0e2ef1edf01b 189 }
destinyXfate 2:0e2ef1edf01b 190
destinyXfate 2:0e2ef1edf01b 191 /* function to free memory for zlib */
destinyXfate 2:0e2ef1edf01b 192 #ifdef PNG_1_0_X
destinyXfate 2:0e2ef1edf01b 193 void PNGAPI
destinyXfate 2:0e2ef1edf01b 194 #else
destinyXfate 2:0e2ef1edf01b 195 void /* private */
destinyXfate 2:0e2ef1edf01b 196 #endif
destinyXfate 2:0e2ef1edf01b 197 png_zfree(voidpf png_ptr, voidpf ptr)
destinyXfate 2:0e2ef1edf01b 198 {
destinyXfate 2:0e2ef1edf01b 199 png_free((png_structp)png_ptr, (png_voidp)ptr);
destinyXfate 2:0e2ef1edf01b 200 }
destinyXfate 2:0e2ef1edf01b 201
destinyXfate 2:0e2ef1edf01b 202 /* Reset the CRC variable to 32 bits of 1's. Care must be taken
destinyXfate 2:0e2ef1edf01b 203 * in case CRC is > 32 bits to leave the top bits 0.
destinyXfate 2:0e2ef1edf01b 204 */
destinyXfate 2:0e2ef1edf01b 205 void /* PRIVATE */
destinyXfate 2:0e2ef1edf01b 206 png_reset_crc(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 207 {
destinyXfate 2:0e2ef1edf01b 208 png_ptr->crc = crc32(0, Z_NULL, 0);
destinyXfate 2:0e2ef1edf01b 209 }
destinyXfate 2:0e2ef1edf01b 210
destinyXfate 2:0e2ef1edf01b 211 /* Calculate the CRC over a section of data. We can only pass as
destinyXfate 2:0e2ef1edf01b 212 * much data to this routine as the largest single buffer size. We
destinyXfate 2:0e2ef1edf01b 213 * also check that this data will actually be used before going to the
destinyXfate 2:0e2ef1edf01b 214 * trouble of calculating it.
destinyXfate 2:0e2ef1edf01b 215 */
destinyXfate 2:0e2ef1edf01b 216 void /* PRIVATE */
destinyXfate 2:0e2ef1edf01b 217 png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length)
destinyXfate 2:0e2ef1edf01b 218 {
destinyXfate 2:0e2ef1edf01b 219 int need_crc = 1;
destinyXfate 2:0e2ef1edf01b 220
destinyXfate 2:0e2ef1edf01b 221 if (png_ptr->chunk_name[0] & 0x20) /* ancillary */
destinyXfate 2:0e2ef1edf01b 222 {
destinyXfate 2:0e2ef1edf01b 223 if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
destinyXfate 2:0e2ef1edf01b 224 (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
destinyXfate 2:0e2ef1edf01b 225 need_crc = 0;
destinyXfate 2:0e2ef1edf01b 226 }
destinyXfate 2:0e2ef1edf01b 227 else /* critical */
destinyXfate 2:0e2ef1edf01b 228 {
destinyXfate 2:0e2ef1edf01b 229 if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
destinyXfate 2:0e2ef1edf01b 230 need_crc = 0;
destinyXfate 2:0e2ef1edf01b 231 }
destinyXfate 2:0e2ef1edf01b 232
destinyXfate 2:0e2ef1edf01b 233 if (need_crc)
destinyXfate 2:0e2ef1edf01b 234 png_ptr->crc = crc32(png_ptr->crc, ptr, (uInt)length);
destinyXfate 2:0e2ef1edf01b 235 }
destinyXfate 2:0e2ef1edf01b 236
destinyXfate 2:0e2ef1edf01b 237 /* Allocate the memory for an info_struct for the application. We don't
destinyXfate 2:0e2ef1edf01b 238 * really need the png_ptr, but it could potentially be useful in the
destinyXfate 2:0e2ef1edf01b 239 * future. This should be used in favour of malloc(png_sizeof(png_info))
destinyXfate 2:0e2ef1edf01b 240 * and png_info_init() so that applications that want to use a shared
destinyXfate 2:0e2ef1edf01b 241 * libpng don't have to be recompiled if png_info changes size.
destinyXfate 2:0e2ef1edf01b 242 */
destinyXfate 2:0e2ef1edf01b 243 png_infop PNGAPI
destinyXfate 2:0e2ef1edf01b 244 png_create_info_struct(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 245 {
destinyXfate 2:0e2ef1edf01b 246 png_infop info_ptr;
destinyXfate 2:0e2ef1edf01b 247
destinyXfate 2:0e2ef1edf01b 248 png_debug(1, "in png_create_info_struct\n");
destinyXfate 2:0e2ef1edf01b 249 if(png_ptr == NULL) return (NULL);
destinyXfate 2:0e2ef1edf01b 250 #ifdef PNG_USER_MEM_SUPPORTED
destinyXfate 2:0e2ef1edf01b 251 info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
destinyXfate 2:0e2ef1edf01b 252 png_ptr->malloc_fn, png_ptr->mem_ptr);
destinyXfate 2:0e2ef1edf01b 253 #else
destinyXfate 2:0e2ef1edf01b 254 info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
destinyXfate 2:0e2ef1edf01b 255 #endif
destinyXfate 2:0e2ef1edf01b 256 if (info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 257 png_info_init_3(&info_ptr, png_sizeof(png_info));
destinyXfate 2:0e2ef1edf01b 258
destinyXfate 2:0e2ef1edf01b 259 return (info_ptr);
destinyXfate 2:0e2ef1edf01b 260 }
destinyXfate 2:0e2ef1edf01b 261
destinyXfate 2:0e2ef1edf01b 262 /* This function frees the memory associated with a single info struct.
destinyXfate 2:0e2ef1edf01b 263 * Normally, one would use either png_destroy_read_struct() or
destinyXfate 2:0e2ef1edf01b 264 * png_destroy_write_struct() to free an info struct, but this may be
destinyXfate 2:0e2ef1edf01b 265 * useful for some applications.
destinyXfate 2:0e2ef1edf01b 266 */
destinyXfate 2:0e2ef1edf01b 267 void PNGAPI
destinyXfate 2:0e2ef1edf01b 268 png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
destinyXfate 2:0e2ef1edf01b 269 {
destinyXfate 2:0e2ef1edf01b 270 png_infop info_ptr = NULL;
destinyXfate 2:0e2ef1edf01b 271 if(png_ptr == NULL) return;
destinyXfate 2:0e2ef1edf01b 272
destinyXfate 2:0e2ef1edf01b 273 png_debug(1, "in png_destroy_info_struct\n");
destinyXfate 2:0e2ef1edf01b 274 if (info_ptr_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 275 info_ptr = *info_ptr_ptr;
destinyXfate 2:0e2ef1edf01b 276
destinyXfate 2:0e2ef1edf01b 277 if (info_ptr != NULL)
destinyXfate 2:0e2ef1edf01b 278 {
destinyXfate 2:0e2ef1edf01b 279 png_info_destroy(png_ptr, info_ptr);
destinyXfate 2:0e2ef1edf01b 280
destinyXfate 2:0e2ef1edf01b 281 #ifdef PNG_USER_MEM_SUPPORTED
destinyXfate 2:0e2ef1edf01b 282 png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn,
destinyXfate 2:0e2ef1edf01b 283 png_ptr->mem_ptr);
destinyXfate 2:0e2ef1edf01b 284 #else
destinyXfate 2:0e2ef1edf01b 285 png_destroy_struct((png_voidp)info_ptr);
destinyXfate 2:0e2ef1edf01b 286 #endif
destinyXfate 2:0e2ef1edf01b 287 *info_ptr_ptr = NULL;
destinyXfate 2:0e2ef1edf01b 288 }
destinyXfate 2:0e2ef1edf01b 289 }
destinyXfate 2:0e2ef1edf01b 290
destinyXfate 2:0e2ef1edf01b 291 /* Initialize the info structure. This is now an internal function (0.89)
destinyXfate 2:0e2ef1edf01b 292 * and applications using it are urged to use png_create_info_struct()
destinyXfate 2:0e2ef1edf01b 293 * instead.
destinyXfate 2:0e2ef1edf01b 294 */
destinyXfate 2:0e2ef1edf01b 295 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
destinyXfate 2:0e2ef1edf01b 296 #undef png_info_init
destinyXfate 2:0e2ef1edf01b 297 void PNGAPI
destinyXfate 2:0e2ef1edf01b 298 png_info_init(png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 299 {
destinyXfate 2:0e2ef1edf01b 300 /* We only come here via pre-1.0.12-compiled applications */
destinyXfate 2:0e2ef1edf01b 301 png_info_init_3(&info_ptr, 0);
destinyXfate 2:0e2ef1edf01b 302 }
destinyXfate 2:0e2ef1edf01b 303 #endif
destinyXfate 2:0e2ef1edf01b 304
destinyXfate 2:0e2ef1edf01b 305 void PNGAPI
destinyXfate 2:0e2ef1edf01b 306 png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
destinyXfate 2:0e2ef1edf01b 307 {
destinyXfate 2:0e2ef1edf01b 308 png_infop info_ptr = *ptr_ptr;
destinyXfate 2:0e2ef1edf01b 309
destinyXfate 2:0e2ef1edf01b 310 if(info_ptr == NULL) return;
destinyXfate 2:0e2ef1edf01b 311
destinyXfate 2:0e2ef1edf01b 312 png_debug(1, "in png_info_init_3\n");
destinyXfate 2:0e2ef1edf01b 313
destinyXfate 2:0e2ef1edf01b 314 if(png_sizeof(png_info) > png_info_struct_size)
destinyXfate 2:0e2ef1edf01b 315 {
destinyXfate 2:0e2ef1edf01b 316 png_destroy_struct(info_ptr);
destinyXfate 2:0e2ef1edf01b 317 info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
destinyXfate 2:0e2ef1edf01b 318 *ptr_ptr = info_ptr;
destinyXfate 2:0e2ef1edf01b 319 }
destinyXfate 2:0e2ef1edf01b 320
destinyXfate 2:0e2ef1edf01b 321 /* set everything to 0 */
destinyXfate 2:0e2ef1edf01b 322 png_memset(info_ptr, 0, png_sizeof (png_info));
destinyXfate 2:0e2ef1edf01b 323 }
destinyXfate 2:0e2ef1edf01b 324
destinyXfate 2:0e2ef1edf01b 325 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 326 void PNGAPI
destinyXfate 2:0e2ef1edf01b 327 png_data_freer(png_structp png_ptr, png_infop info_ptr,
destinyXfate 2:0e2ef1edf01b 328 int freer, png_uint_32 mask)
destinyXfate 2:0e2ef1edf01b 329 {
destinyXfate 2:0e2ef1edf01b 330 png_debug(1, "in png_data_freer\n");
destinyXfate 2:0e2ef1edf01b 331 if (png_ptr == NULL || info_ptr == NULL)
destinyXfate 2:0e2ef1edf01b 332 return;
destinyXfate 2:0e2ef1edf01b 333 if(freer == PNG_DESTROY_WILL_FREE_DATA)
destinyXfate 2:0e2ef1edf01b 334 info_ptr->free_me |= mask;
destinyXfate 2:0e2ef1edf01b 335 else if(freer == PNG_USER_WILL_FREE_DATA)
destinyXfate 2:0e2ef1edf01b 336 info_ptr->free_me &= ~mask;
destinyXfate 2:0e2ef1edf01b 337 else
destinyXfate 2:0e2ef1edf01b 338 png_warning(png_ptr,
destinyXfate 2:0e2ef1edf01b 339 "Unknown freer parameter in png_data_freer.");
destinyXfate 2:0e2ef1edf01b 340 }
destinyXfate 2:0e2ef1edf01b 341 #endif
destinyXfate 2:0e2ef1edf01b 342
destinyXfate 2:0e2ef1edf01b 343 void PNGAPI
destinyXfate 2:0e2ef1edf01b 344 png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
destinyXfate 2:0e2ef1edf01b 345 int num)
destinyXfate 2:0e2ef1edf01b 346 {
destinyXfate 2:0e2ef1edf01b 347 png_debug(1, "in png_free_data\n");
destinyXfate 2:0e2ef1edf01b 348 if (png_ptr == NULL || info_ptr == NULL)
destinyXfate 2:0e2ef1edf01b 349 return;
destinyXfate 2:0e2ef1edf01b 350
destinyXfate 2:0e2ef1edf01b 351 #if defined(PNG_TEXT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 352 /* free text item num or (if num == -1) all text items */
destinyXfate 2:0e2ef1edf01b 353 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 354 if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 355 #else
destinyXfate 2:0e2ef1edf01b 356 if (mask & PNG_FREE_TEXT)
destinyXfate 2:0e2ef1edf01b 357 #endif
destinyXfate 2:0e2ef1edf01b 358 {
destinyXfate 2:0e2ef1edf01b 359 if (num != -1)
destinyXfate 2:0e2ef1edf01b 360 {
destinyXfate 2:0e2ef1edf01b 361 if (info_ptr->text && info_ptr->text[num].key)
destinyXfate 2:0e2ef1edf01b 362 {
destinyXfate 2:0e2ef1edf01b 363 png_free(png_ptr, info_ptr->text[num].key);
destinyXfate 2:0e2ef1edf01b 364 info_ptr->text[num].key = NULL;
destinyXfate 2:0e2ef1edf01b 365 }
destinyXfate 2:0e2ef1edf01b 366 }
destinyXfate 2:0e2ef1edf01b 367 else
destinyXfate 2:0e2ef1edf01b 368 {
destinyXfate 2:0e2ef1edf01b 369 int i;
destinyXfate 2:0e2ef1edf01b 370 for (i = 0; i < info_ptr->num_text; i++)
destinyXfate 2:0e2ef1edf01b 371 png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
destinyXfate 2:0e2ef1edf01b 372 png_free(png_ptr, info_ptr->text);
destinyXfate 2:0e2ef1edf01b 373 info_ptr->text = NULL;
destinyXfate 2:0e2ef1edf01b 374 info_ptr->num_text=0;
destinyXfate 2:0e2ef1edf01b 375 }
destinyXfate 2:0e2ef1edf01b 376 }
destinyXfate 2:0e2ef1edf01b 377 #endif
destinyXfate 2:0e2ef1edf01b 378
destinyXfate 2:0e2ef1edf01b 379 #if defined(PNG_tRNS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 380 /* free any tRNS entry */
destinyXfate 2:0e2ef1edf01b 381 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 382 if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 383 #else
destinyXfate 2:0e2ef1edf01b 384 if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
destinyXfate 2:0e2ef1edf01b 385 #endif
destinyXfate 2:0e2ef1edf01b 386 {
destinyXfate 2:0e2ef1edf01b 387 png_free(png_ptr, info_ptr->trans);
destinyXfate 2:0e2ef1edf01b 388 info_ptr->valid &= ~PNG_INFO_tRNS;
destinyXfate 2:0e2ef1edf01b 389 #ifndef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 390 png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
destinyXfate 2:0e2ef1edf01b 391 #endif
destinyXfate 2:0e2ef1edf01b 392 info_ptr->trans = NULL;
destinyXfate 2:0e2ef1edf01b 393 }
destinyXfate 2:0e2ef1edf01b 394 #endif
destinyXfate 2:0e2ef1edf01b 395
destinyXfate 2:0e2ef1edf01b 396 #if defined(PNG_sCAL_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 397 /* free any sCAL entry */
destinyXfate 2:0e2ef1edf01b 398 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 399 if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 400 #else
destinyXfate 2:0e2ef1edf01b 401 if (mask & PNG_FREE_SCAL)
destinyXfate 2:0e2ef1edf01b 402 #endif
destinyXfate 2:0e2ef1edf01b 403 {
destinyXfate 2:0e2ef1edf01b 404 #if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 405 png_free(png_ptr, info_ptr->scal_s_width);
destinyXfate 2:0e2ef1edf01b 406 png_free(png_ptr, info_ptr->scal_s_height);
destinyXfate 2:0e2ef1edf01b 407 info_ptr->scal_s_width = NULL;
destinyXfate 2:0e2ef1edf01b 408 info_ptr->scal_s_height = NULL;
destinyXfate 2:0e2ef1edf01b 409 #endif
destinyXfate 2:0e2ef1edf01b 410 info_ptr->valid &= ~PNG_INFO_sCAL;
destinyXfate 2:0e2ef1edf01b 411 }
destinyXfate 2:0e2ef1edf01b 412 #endif
destinyXfate 2:0e2ef1edf01b 413
destinyXfate 2:0e2ef1edf01b 414 #if defined(PNG_pCAL_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 415 /* free any pCAL entry */
destinyXfate 2:0e2ef1edf01b 416 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 417 if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 418 #else
destinyXfate 2:0e2ef1edf01b 419 if (mask & PNG_FREE_PCAL)
destinyXfate 2:0e2ef1edf01b 420 #endif
destinyXfate 2:0e2ef1edf01b 421 {
destinyXfate 2:0e2ef1edf01b 422 png_free(png_ptr, info_ptr->pcal_purpose);
destinyXfate 2:0e2ef1edf01b 423 png_free(png_ptr, info_ptr->pcal_units);
destinyXfate 2:0e2ef1edf01b 424 info_ptr->pcal_purpose = NULL;
destinyXfate 2:0e2ef1edf01b 425 info_ptr->pcal_units = NULL;
destinyXfate 2:0e2ef1edf01b 426 if (info_ptr->pcal_params != NULL)
destinyXfate 2:0e2ef1edf01b 427 {
destinyXfate 2:0e2ef1edf01b 428 int i;
destinyXfate 2:0e2ef1edf01b 429 for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
destinyXfate 2:0e2ef1edf01b 430 {
destinyXfate 2:0e2ef1edf01b 431 png_free(png_ptr, info_ptr->pcal_params[i]);
destinyXfate 2:0e2ef1edf01b 432 info_ptr->pcal_params[i]=NULL;
destinyXfate 2:0e2ef1edf01b 433 }
destinyXfate 2:0e2ef1edf01b 434 png_free(png_ptr, info_ptr->pcal_params);
destinyXfate 2:0e2ef1edf01b 435 info_ptr->pcal_params = NULL;
destinyXfate 2:0e2ef1edf01b 436 }
destinyXfate 2:0e2ef1edf01b 437 info_ptr->valid &= ~PNG_INFO_pCAL;
destinyXfate 2:0e2ef1edf01b 438 }
destinyXfate 2:0e2ef1edf01b 439 #endif
destinyXfate 2:0e2ef1edf01b 440
destinyXfate 2:0e2ef1edf01b 441 #if defined(PNG_iCCP_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 442 /* free any iCCP entry */
destinyXfate 2:0e2ef1edf01b 443 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 444 if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 445 #else
destinyXfate 2:0e2ef1edf01b 446 if (mask & PNG_FREE_ICCP)
destinyXfate 2:0e2ef1edf01b 447 #endif
destinyXfate 2:0e2ef1edf01b 448 {
destinyXfate 2:0e2ef1edf01b 449 png_free(png_ptr, info_ptr->iccp_name);
destinyXfate 2:0e2ef1edf01b 450 png_free(png_ptr, info_ptr->iccp_profile);
destinyXfate 2:0e2ef1edf01b 451 info_ptr->iccp_name = NULL;
destinyXfate 2:0e2ef1edf01b 452 info_ptr->iccp_profile = NULL;
destinyXfate 2:0e2ef1edf01b 453 info_ptr->valid &= ~PNG_INFO_iCCP;
destinyXfate 2:0e2ef1edf01b 454 }
destinyXfate 2:0e2ef1edf01b 455 #endif
destinyXfate 2:0e2ef1edf01b 456
destinyXfate 2:0e2ef1edf01b 457 #if defined(PNG_sPLT_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 458 /* free a given sPLT entry, or (if num == -1) all sPLT entries */
destinyXfate 2:0e2ef1edf01b 459 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 460 if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 461 #else
destinyXfate 2:0e2ef1edf01b 462 if (mask & PNG_FREE_SPLT)
destinyXfate 2:0e2ef1edf01b 463 #endif
destinyXfate 2:0e2ef1edf01b 464 {
destinyXfate 2:0e2ef1edf01b 465 if (num != -1)
destinyXfate 2:0e2ef1edf01b 466 {
destinyXfate 2:0e2ef1edf01b 467 if(info_ptr->splt_palettes)
destinyXfate 2:0e2ef1edf01b 468 {
destinyXfate 2:0e2ef1edf01b 469 png_free(png_ptr, info_ptr->splt_palettes[num].name);
destinyXfate 2:0e2ef1edf01b 470 png_free(png_ptr, info_ptr->splt_palettes[num].entries);
destinyXfate 2:0e2ef1edf01b 471 info_ptr->splt_palettes[num].name = NULL;
destinyXfate 2:0e2ef1edf01b 472 info_ptr->splt_palettes[num].entries = NULL;
destinyXfate 2:0e2ef1edf01b 473 }
destinyXfate 2:0e2ef1edf01b 474 }
destinyXfate 2:0e2ef1edf01b 475 else
destinyXfate 2:0e2ef1edf01b 476 {
destinyXfate 2:0e2ef1edf01b 477 if(info_ptr->splt_palettes_num)
destinyXfate 2:0e2ef1edf01b 478 {
destinyXfate 2:0e2ef1edf01b 479 int i;
destinyXfate 2:0e2ef1edf01b 480 for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
destinyXfate 2:0e2ef1edf01b 481 png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
destinyXfate 2:0e2ef1edf01b 482
destinyXfate 2:0e2ef1edf01b 483 png_free(png_ptr, info_ptr->splt_palettes);
destinyXfate 2:0e2ef1edf01b 484 info_ptr->splt_palettes = NULL;
destinyXfate 2:0e2ef1edf01b 485 info_ptr->splt_palettes_num = 0;
destinyXfate 2:0e2ef1edf01b 486 }
destinyXfate 2:0e2ef1edf01b 487 info_ptr->valid &= ~PNG_INFO_sPLT;
destinyXfate 2:0e2ef1edf01b 488 }
destinyXfate 2:0e2ef1edf01b 489 }
destinyXfate 2:0e2ef1edf01b 490 #endif
destinyXfate 2:0e2ef1edf01b 491
destinyXfate 2:0e2ef1edf01b 492 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 493 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 494 if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 495 #else
destinyXfate 2:0e2ef1edf01b 496 if (mask & PNG_FREE_UNKN)
destinyXfate 2:0e2ef1edf01b 497 #endif
destinyXfate 2:0e2ef1edf01b 498 {
destinyXfate 2:0e2ef1edf01b 499 if (num != -1)
destinyXfate 2:0e2ef1edf01b 500 {
destinyXfate 2:0e2ef1edf01b 501 if(info_ptr->unknown_chunks)
destinyXfate 2:0e2ef1edf01b 502 {
destinyXfate 2:0e2ef1edf01b 503 png_free(png_ptr, info_ptr->unknown_chunks[num].data);
destinyXfate 2:0e2ef1edf01b 504 info_ptr->unknown_chunks[num].data = NULL;
destinyXfate 2:0e2ef1edf01b 505 }
destinyXfate 2:0e2ef1edf01b 506 }
destinyXfate 2:0e2ef1edf01b 507 else
destinyXfate 2:0e2ef1edf01b 508 {
destinyXfate 2:0e2ef1edf01b 509 int i;
destinyXfate 2:0e2ef1edf01b 510
destinyXfate 2:0e2ef1edf01b 511 if(info_ptr->unknown_chunks_num)
destinyXfate 2:0e2ef1edf01b 512 {
destinyXfate 2:0e2ef1edf01b 513 for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++)
destinyXfate 2:0e2ef1edf01b 514 png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
destinyXfate 2:0e2ef1edf01b 515
destinyXfate 2:0e2ef1edf01b 516 png_free(png_ptr, info_ptr->unknown_chunks);
destinyXfate 2:0e2ef1edf01b 517 info_ptr->unknown_chunks = NULL;
destinyXfate 2:0e2ef1edf01b 518 info_ptr->unknown_chunks_num = 0;
destinyXfate 2:0e2ef1edf01b 519 }
destinyXfate 2:0e2ef1edf01b 520 }
destinyXfate 2:0e2ef1edf01b 521 }
destinyXfate 2:0e2ef1edf01b 522 #endif
destinyXfate 2:0e2ef1edf01b 523
destinyXfate 2:0e2ef1edf01b 524 #if defined(PNG_hIST_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 525 /* free any hIST entry */
destinyXfate 2:0e2ef1edf01b 526 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 527 if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 528 #else
destinyXfate 2:0e2ef1edf01b 529 if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
destinyXfate 2:0e2ef1edf01b 530 #endif
destinyXfate 2:0e2ef1edf01b 531 {
destinyXfate 2:0e2ef1edf01b 532 png_free(png_ptr, info_ptr->hist);
destinyXfate 2:0e2ef1edf01b 533 info_ptr->hist = NULL;
destinyXfate 2:0e2ef1edf01b 534 info_ptr->valid &= ~PNG_INFO_hIST;
destinyXfate 2:0e2ef1edf01b 535 #ifndef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 536 png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
destinyXfate 2:0e2ef1edf01b 537 #endif
destinyXfate 2:0e2ef1edf01b 538 }
destinyXfate 2:0e2ef1edf01b 539 #endif
destinyXfate 2:0e2ef1edf01b 540
destinyXfate 2:0e2ef1edf01b 541 /* free any PLTE entry that was internally allocated */
destinyXfate 2:0e2ef1edf01b 542 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 543 if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 544 #else
destinyXfate 2:0e2ef1edf01b 545 if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
destinyXfate 2:0e2ef1edf01b 546 #endif
destinyXfate 2:0e2ef1edf01b 547 {
destinyXfate 2:0e2ef1edf01b 548 png_zfree(png_ptr, info_ptr->palette);
destinyXfate 2:0e2ef1edf01b 549 info_ptr->palette = NULL;
destinyXfate 2:0e2ef1edf01b 550 info_ptr->valid &= ~PNG_INFO_PLTE;
destinyXfate 2:0e2ef1edf01b 551 #ifndef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 552 png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
destinyXfate 2:0e2ef1edf01b 553 #endif
destinyXfate 2:0e2ef1edf01b 554 info_ptr->num_palette = 0;
destinyXfate 2:0e2ef1edf01b 555 }
destinyXfate 2:0e2ef1edf01b 556
destinyXfate 2:0e2ef1edf01b 557 #if defined(PNG_INFO_IMAGE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 558 /* free any image bits attached to the info structure */
destinyXfate 2:0e2ef1edf01b 559 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 560 if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
destinyXfate 2:0e2ef1edf01b 561 #else
destinyXfate 2:0e2ef1edf01b 562 if (mask & PNG_FREE_ROWS)
destinyXfate 2:0e2ef1edf01b 563 #endif
destinyXfate 2:0e2ef1edf01b 564 {
destinyXfate 2:0e2ef1edf01b 565 if(info_ptr->row_pointers)
destinyXfate 2:0e2ef1edf01b 566 {
destinyXfate 2:0e2ef1edf01b 567 int row;
destinyXfate 2:0e2ef1edf01b 568 for (row = 0; row < (int)info_ptr->height; row++)
destinyXfate 2:0e2ef1edf01b 569 {
destinyXfate 2:0e2ef1edf01b 570 png_free(png_ptr, info_ptr->row_pointers[row]);
destinyXfate 2:0e2ef1edf01b 571 info_ptr->row_pointers[row]=NULL;
destinyXfate 2:0e2ef1edf01b 572 }
destinyXfate 2:0e2ef1edf01b 573 png_free(png_ptr, info_ptr->row_pointers);
destinyXfate 2:0e2ef1edf01b 574 info_ptr->row_pointers=NULL;
destinyXfate 2:0e2ef1edf01b 575 }
destinyXfate 2:0e2ef1edf01b 576 info_ptr->valid &= ~PNG_INFO_IDAT;
destinyXfate 2:0e2ef1edf01b 577 }
destinyXfate 2:0e2ef1edf01b 578 #endif
destinyXfate 2:0e2ef1edf01b 579
destinyXfate 2:0e2ef1edf01b 580 #ifdef PNG_FREE_ME_SUPPORTED
destinyXfate 2:0e2ef1edf01b 581 if(num == -1)
destinyXfate 2:0e2ef1edf01b 582 info_ptr->free_me &= ~mask;
destinyXfate 2:0e2ef1edf01b 583 else
destinyXfate 2:0e2ef1edf01b 584 info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
destinyXfate 2:0e2ef1edf01b 585 #endif
destinyXfate 2:0e2ef1edf01b 586 }
destinyXfate 2:0e2ef1edf01b 587
destinyXfate 2:0e2ef1edf01b 588 /* This is an internal routine to free any memory that the info struct is
destinyXfate 2:0e2ef1edf01b 589 * pointing to before re-using it or freeing the struct itself. Recall
destinyXfate 2:0e2ef1edf01b 590 * that png_free() checks for NULL pointers for us.
destinyXfate 2:0e2ef1edf01b 591 */
destinyXfate 2:0e2ef1edf01b 592 void /* PRIVATE */
destinyXfate 2:0e2ef1edf01b 593 png_info_destroy(png_structp png_ptr, png_infop info_ptr)
destinyXfate 2:0e2ef1edf01b 594 {
destinyXfate 2:0e2ef1edf01b 595 png_debug(1, "in png_info_destroy\n");
destinyXfate 2:0e2ef1edf01b 596
destinyXfate 2:0e2ef1edf01b 597 png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
destinyXfate 2:0e2ef1edf01b 598
destinyXfate 2:0e2ef1edf01b 599 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 600 if (png_ptr->num_chunk_list)
destinyXfate 2:0e2ef1edf01b 601 {
destinyXfate 2:0e2ef1edf01b 602 png_free(png_ptr, png_ptr->chunk_list);
destinyXfate 2:0e2ef1edf01b 603 png_ptr->chunk_list=NULL;
destinyXfate 2:0e2ef1edf01b 604 png_ptr->num_chunk_list=0;
destinyXfate 2:0e2ef1edf01b 605 }
destinyXfate 2:0e2ef1edf01b 606 #endif
destinyXfate 2:0e2ef1edf01b 607
destinyXfate 2:0e2ef1edf01b 608 png_info_init_3(&info_ptr, png_sizeof(png_info));
destinyXfate 2:0e2ef1edf01b 609 }
destinyXfate 2:0e2ef1edf01b 610 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 611
destinyXfate 2:0e2ef1edf01b 612 /* This function returns a pointer to the io_ptr associated with the user
destinyXfate 2:0e2ef1edf01b 613 * functions. The application should free any memory associated with this
destinyXfate 2:0e2ef1edf01b 614 * pointer before png_write_destroy() or png_read_destroy() are called.
destinyXfate 2:0e2ef1edf01b 615 */
destinyXfate 2:0e2ef1edf01b 616 png_voidp PNGAPI
destinyXfate 2:0e2ef1edf01b 617 png_get_io_ptr(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 618 {
destinyXfate 2:0e2ef1edf01b 619 if(png_ptr == NULL) return (NULL);
destinyXfate 2:0e2ef1edf01b 620 return (png_ptr->io_ptr);
destinyXfate 2:0e2ef1edf01b 621 }
destinyXfate 2:0e2ef1edf01b 622
destinyXfate 2:0e2ef1edf01b 623 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 624 #if !defined(PNG_NO_STDIO)
destinyXfate 2:0e2ef1edf01b 625 /* Initialize the default input/output functions for the PNG file. If you
destinyXfate 2:0e2ef1edf01b 626 * use your own read or write routines, you can call either png_set_read_fn()
destinyXfate 2:0e2ef1edf01b 627 * or png_set_write_fn() instead of png_init_io(). If you have defined
destinyXfate 2:0e2ef1edf01b 628 * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
destinyXfate 2:0e2ef1edf01b 629 * necessarily available.
destinyXfate 2:0e2ef1edf01b 630 */
destinyXfate 2:0e2ef1edf01b 631 void PNGAPI
destinyXfate 2:0e2ef1edf01b 632 png_init_io(png_structp png_ptr, png_FILE_p fp)
destinyXfate 2:0e2ef1edf01b 633 {
destinyXfate 2:0e2ef1edf01b 634 png_debug(1, "in png_init_io\n");
destinyXfate 2:0e2ef1edf01b 635 if(png_ptr == NULL) return;
destinyXfate 2:0e2ef1edf01b 636 png_ptr->io_ptr = (png_voidp)fp;
destinyXfate 2:0e2ef1edf01b 637 }
destinyXfate 2:0e2ef1edf01b 638 #endif
destinyXfate 2:0e2ef1edf01b 639
destinyXfate 2:0e2ef1edf01b 640 #if defined(PNG_TIME_RFC1123_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 641 /* Convert the supplied time into an RFC 1123 string suitable for use in
destinyXfate 2:0e2ef1edf01b 642 * a "Creation Time" or other text-based time string.
destinyXfate 2:0e2ef1edf01b 643 */
destinyXfate 2:0e2ef1edf01b 644 png_charp PNGAPI
destinyXfate 2:0e2ef1edf01b 645 png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
destinyXfate 2:0e2ef1edf01b 646 {
destinyXfate 2:0e2ef1edf01b 647 static PNG_CONST char short_months[12][4] =
destinyXfate 2:0e2ef1edf01b 648 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
destinyXfate 2:0e2ef1edf01b 649 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
destinyXfate 2:0e2ef1edf01b 650
destinyXfate 2:0e2ef1edf01b 651 if(png_ptr == NULL) return (NULL);
destinyXfate 2:0e2ef1edf01b 652 if (png_ptr->time_buffer == NULL)
destinyXfate 2:0e2ef1edf01b 653 {
destinyXfate 2:0e2ef1edf01b 654 png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
destinyXfate 2:0e2ef1edf01b 655 png_sizeof(char)));
destinyXfate 2:0e2ef1edf01b 656 }
destinyXfate 2:0e2ef1edf01b 657
destinyXfate 2:0e2ef1edf01b 658 #if defined(_WIN32_WCE)
destinyXfate 2:0e2ef1edf01b 659 {
destinyXfate 2:0e2ef1edf01b 660 wchar_t time_buf[29];
destinyXfate 2:0e2ef1edf01b 661 wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
destinyXfate 2:0e2ef1edf01b 662 ptime->day % 32, short_months[(ptime->month - 1) % 12],
destinyXfate 2:0e2ef1edf01b 663 ptime->year, ptime->hour % 24, ptime->minute % 60,
destinyXfate 2:0e2ef1edf01b 664 ptime->second % 61);
destinyXfate 2:0e2ef1edf01b 665 WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 29,
destinyXfate 2:0e2ef1edf01b 666 NULL, NULL);
destinyXfate 2:0e2ef1edf01b 667 }
destinyXfate 2:0e2ef1edf01b 668 #else
destinyXfate 2:0e2ef1edf01b 669 #ifdef USE_FAR_KEYWORD
destinyXfate 2:0e2ef1edf01b 670 {
destinyXfate 2:0e2ef1edf01b 671 char near_time_buf[29];
destinyXfate 2:0e2ef1edf01b 672 sprintf(near_time_buf, "%d %s %d %02d:%02d:%02d +0000",
destinyXfate 2:0e2ef1edf01b 673 ptime->day % 32, short_months[(ptime->month - 1) % 12],
destinyXfate 2:0e2ef1edf01b 674 ptime->year, ptime->hour % 24, ptime->minute % 60,
destinyXfate 2:0e2ef1edf01b 675 ptime->second % 61);
destinyXfate 2:0e2ef1edf01b 676 png_memcpy(png_ptr->time_buffer, near_time_buf,
destinyXfate 2:0e2ef1edf01b 677 29*png_sizeof(char));
destinyXfate 2:0e2ef1edf01b 678 }
destinyXfate 2:0e2ef1edf01b 679 #else
destinyXfate 2:0e2ef1edf01b 680 sprintf(png_ptr->time_buffer, "%d %s %d %02d:%02d:%02d +0000",
destinyXfate 2:0e2ef1edf01b 681 ptime->day % 32, short_months[(ptime->month - 1) % 12],
destinyXfate 2:0e2ef1edf01b 682 ptime->year, ptime->hour % 24, ptime->minute % 60,
destinyXfate 2:0e2ef1edf01b 683 ptime->second % 61);
destinyXfate 2:0e2ef1edf01b 684 #endif
destinyXfate 2:0e2ef1edf01b 685 #endif /* _WIN32_WCE */
destinyXfate 2:0e2ef1edf01b 686 return ((png_charp)png_ptr->time_buffer);
destinyXfate 2:0e2ef1edf01b 687 }
destinyXfate 2:0e2ef1edf01b 688 #endif /* PNG_TIME_RFC1123_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 689
destinyXfate 2:0e2ef1edf01b 690 #if 0
destinyXfate 2:0e2ef1edf01b 691 /* Signature string for a PNG file. */
destinyXfate 2:0e2ef1edf01b 692 png_bytep PNGAPI
destinyXfate 2:0e2ef1edf01b 693 png_sig_bytes(void)
destinyXfate 2:0e2ef1edf01b 694 {
destinyXfate 2:0e2ef1edf01b 695 return ((png_bytep)"\211\120\116\107\015\012\032\012");
destinyXfate 2:0e2ef1edf01b 696 }
destinyXfate 2:0e2ef1edf01b 697 #endif
destinyXfate 2:0e2ef1edf01b 698 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 699
destinyXfate 2:0e2ef1edf01b 700 png_charp PNGAPI
destinyXfate 2:0e2ef1edf01b 701 png_get_copyright(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 702 {
destinyXfate 2:0e2ef1edf01b 703 if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
destinyXfate 2:0e2ef1edf01b 704 return ((png_charp) "\n libpng version 1.2.15 - January 5, 2007\n\
destinyXfate 2:0e2ef1edf01b 705 Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
destinyXfate 2:0e2ef1edf01b 706 Copyright (c) 1996-1997 Andreas Dilger\n\
destinyXfate 2:0e2ef1edf01b 707 Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
destinyXfate 2:0e2ef1edf01b 708 return ((png_charp) "");
destinyXfate 2:0e2ef1edf01b 709 }
destinyXfate 2:0e2ef1edf01b 710
destinyXfate 2:0e2ef1edf01b 711 /* The following return the library version as a short string in the
destinyXfate 2:0e2ef1edf01b 712 * format 1.0.0 through 99.99.99zz. To get the version of *.h files
destinyXfate 2:0e2ef1edf01b 713 * used with your application, print out PNG_LIBPNG_VER_STRING, which
destinyXfate 2:0e2ef1edf01b 714 * is defined in png.h.
destinyXfate 2:0e2ef1edf01b 715 * Note: now there is no difference between png_get_libpng_ver() and
destinyXfate 2:0e2ef1edf01b 716 * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard,
destinyXfate 2:0e2ef1edf01b 717 * it is guaranteed that png.c uses the correct version of png.h.
destinyXfate 2:0e2ef1edf01b 718 */
destinyXfate 2:0e2ef1edf01b 719 png_charp PNGAPI
destinyXfate 2:0e2ef1edf01b 720 png_get_libpng_ver(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 721 {
destinyXfate 2:0e2ef1edf01b 722 /* Version of *.c files used when building libpng */
destinyXfate 2:0e2ef1edf01b 723 if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
destinyXfate 2:0e2ef1edf01b 724 return ((png_charp) PNG_LIBPNG_VER_STRING);
destinyXfate 2:0e2ef1edf01b 725 return ((png_charp) "");
destinyXfate 2:0e2ef1edf01b 726 }
destinyXfate 2:0e2ef1edf01b 727
destinyXfate 2:0e2ef1edf01b 728 png_charp PNGAPI
destinyXfate 2:0e2ef1edf01b 729 png_get_header_ver(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 730 {
destinyXfate 2:0e2ef1edf01b 731 /* Version of *.h files used when building libpng */
destinyXfate 2:0e2ef1edf01b 732 if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
destinyXfate 2:0e2ef1edf01b 733 return ((png_charp) PNG_LIBPNG_VER_STRING);
destinyXfate 2:0e2ef1edf01b 734 return ((png_charp) "");
destinyXfate 2:0e2ef1edf01b 735 }
destinyXfate 2:0e2ef1edf01b 736
destinyXfate 2:0e2ef1edf01b 737 png_charp PNGAPI
destinyXfate 2:0e2ef1edf01b 738 png_get_header_version(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 739 {
destinyXfate 2:0e2ef1edf01b 740 /* Returns longer string containing both version and date */
destinyXfate 2:0e2ef1edf01b 741 if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
destinyXfate 2:0e2ef1edf01b 742 return ((png_charp) PNG_HEADER_VERSION_STRING);
destinyXfate 2:0e2ef1edf01b 743 return ((png_charp) "");
destinyXfate 2:0e2ef1edf01b 744 }
destinyXfate 2:0e2ef1edf01b 745
destinyXfate 2:0e2ef1edf01b 746 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 747 #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
destinyXfate 2:0e2ef1edf01b 748 int PNGAPI
destinyXfate 2:0e2ef1edf01b 749 png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
destinyXfate 2:0e2ef1edf01b 750 {
destinyXfate 2:0e2ef1edf01b 751 /* check chunk_name and return "keep" value if it's on the list, else 0 */
destinyXfate 2:0e2ef1edf01b 752 int i;
destinyXfate 2:0e2ef1edf01b 753 png_bytep p;
destinyXfate 2:0e2ef1edf01b 754 if((png_ptr == NULL && chunk_name == NULL) || png_ptr->num_chunk_list<=0)
destinyXfate 2:0e2ef1edf01b 755 return 0;
destinyXfate 2:0e2ef1edf01b 756 p=png_ptr->chunk_list+png_ptr->num_chunk_list*5-5;
destinyXfate 2:0e2ef1edf01b 757 for (i = png_ptr->num_chunk_list; i; i--, p-=5)
destinyXfate 2:0e2ef1edf01b 758 if (!png_memcmp(chunk_name, p, 4))
destinyXfate 2:0e2ef1edf01b 759 return ((int)*(p+4));
destinyXfate 2:0e2ef1edf01b 760 return 0;
destinyXfate 2:0e2ef1edf01b 761 }
destinyXfate 2:0e2ef1edf01b 762 #endif
destinyXfate 2:0e2ef1edf01b 763
destinyXfate 2:0e2ef1edf01b 764 /* This function, added to libpng-1.0.6g, is untested. */
destinyXfate 2:0e2ef1edf01b 765 int PNGAPI
destinyXfate 2:0e2ef1edf01b 766 png_reset_zstream(png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 767 {
destinyXfate 2:0e2ef1edf01b 768 if (png_ptr == NULL) return Z_STREAM_ERROR;
destinyXfate 2:0e2ef1edf01b 769 return (inflateReset(&png_ptr->zstream));
destinyXfate 2:0e2ef1edf01b 770 }
destinyXfate 2:0e2ef1edf01b 771 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 772
destinyXfate 2:0e2ef1edf01b 773 /* This function was added to libpng-1.0.7 */
destinyXfate 2:0e2ef1edf01b 774 png_uint_32 PNGAPI
destinyXfate 2:0e2ef1edf01b 775 png_access_version_number(void)
destinyXfate 2:0e2ef1edf01b 776 {
destinyXfate 2:0e2ef1edf01b 777 /* Version of *.c files used when building libpng */
destinyXfate 2:0e2ef1edf01b 778 return((png_uint_32) PNG_LIBPNG_VER);
destinyXfate 2:0e2ef1edf01b 779 }
destinyXfate 2:0e2ef1edf01b 780
destinyXfate 2:0e2ef1edf01b 781
destinyXfate 2:0e2ef1edf01b 782 #if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 783 #if !defined(PNG_1_0_X)
destinyXfate 2:0e2ef1edf01b 784 #if defined(PNG_MMX_CODE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 785 /* this INTERNAL function was added to libpng 1.2.0 */
destinyXfate 2:0e2ef1edf01b 786 void /* PRIVATE */
destinyXfate 2:0e2ef1edf01b 787 png_init_mmx_flags (png_structp png_ptr)
destinyXfate 2:0e2ef1edf01b 788 {
destinyXfate 2:0e2ef1edf01b 789 if(png_ptr == NULL) return;
destinyXfate 2:0e2ef1edf01b 790 png_ptr->mmx_rowbytes_threshold = 0;
destinyXfate 2:0e2ef1edf01b 791 png_ptr->mmx_bitdepth_threshold = 0;
destinyXfate 2:0e2ef1edf01b 792
destinyXfate 2:0e2ef1edf01b 793 # if (defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD))
destinyXfate 2:0e2ef1edf01b 794
destinyXfate 2:0e2ef1edf01b 795 png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_COMPILED;
destinyXfate 2:0e2ef1edf01b 796
destinyXfate 2:0e2ef1edf01b 797 if (png_mmx_support() > 0) {
destinyXfate 2:0e2ef1edf01b 798 png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
destinyXfate 2:0e2ef1edf01b 799 # ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
destinyXfate 2:0e2ef1edf01b 800 | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
destinyXfate 2:0e2ef1edf01b 801 # endif
destinyXfate 2:0e2ef1edf01b 802 # ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
destinyXfate 2:0e2ef1edf01b 803 | PNG_ASM_FLAG_MMX_READ_INTERLACE
destinyXfate 2:0e2ef1edf01b 804 # endif
destinyXfate 2:0e2ef1edf01b 805 # ifndef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
destinyXfate 2:0e2ef1edf01b 806 ;
destinyXfate 2:0e2ef1edf01b 807 # else
destinyXfate 2:0e2ef1edf01b 808 | PNG_ASM_FLAG_MMX_READ_FILTER_SUB
destinyXfate 2:0e2ef1edf01b 809 | PNG_ASM_FLAG_MMX_READ_FILTER_UP
destinyXfate 2:0e2ef1edf01b 810 | PNG_ASM_FLAG_MMX_READ_FILTER_AVG
destinyXfate 2:0e2ef1edf01b 811 | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
destinyXfate 2:0e2ef1edf01b 812
destinyXfate 2:0e2ef1edf01b 813 png_ptr->mmx_rowbytes_threshold = PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT;
destinyXfate 2:0e2ef1edf01b 814 png_ptr->mmx_bitdepth_threshold = PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT;
destinyXfate 2:0e2ef1edf01b 815 # endif
destinyXfate 2:0e2ef1edf01b 816 } else {
destinyXfate 2:0e2ef1edf01b 817 png_ptr->asm_flags &= ~( PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
destinyXfate 2:0e2ef1edf01b 818 | PNG_MMX_READ_FLAGS
destinyXfate 2:0e2ef1edf01b 819 | PNG_MMX_WRITE_FLAGS );
destinyXfate 2:0e2ef1edf01b 820 }
destinyXfate 2:0e2ef1edf01b 821
destinyXfate 2:0e2ef1edf01b 822 # else /* !(PNGVCRD || PNGGCCRD) */
destinyXfate 2:0e2ef1edf01b 823
destinyXfate 2:0e2ef1edf01b 824 /* clear all MMX flags; no support is compiled in */
destinyXfate 2:0e2ef1edf01b 825 png_ptr->asm_flags &= ~( PNG_MMX_FLAGS );
destinyXfate 2:0e2ef1edf01b 826
destinyXfate 2:0e2ef1edf01b 827 # endif /* ?(PNGVCRD || PNGGCCRD) */
destinyXfate 2:0e2ef1edf01b 828 }
destinyXfate 2:0e2ef1edf01b 829
destinyXfate 2:0e2ef1edf01b 830 #endif /* !(PNG_MMX_CODE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 831
destinyXfate 2:0e2ef1edf01b 832 /* this function was added to libpng 1.2.0 */
destinyXfate 2:0e2ef1edf01b 833 #if !defined(PNG_USE_PNGGCCRD) && \
destinyXfate 2:0e2ef1edf01b 834 !(defined(PNG_MMX_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD))
destinyXfate 2:0e2ef1edf01b 835 int PNGAPI
destinyXfate 2:0e2ef1edf01b 836 png_mmx_support(void)
destinyXfate 2:0e2ef1edf01b 837 {
destinyXfate 2:0e2ef1edf01b 838 return -1;
destinyXfate 2:0e2ef1edf01b 839 }
destinyXfate 2:0e2ef1edf01b 840 #endif
destinyXfate 2:0e2ef1edf01b 841 #endif /* PNG_1_0_X && PNG_ASSEMBLER_CODE_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 842 #endif /* PNG_READ_SUPPORTED */
destinyXfate 2:0e2ef1edf01b 843
destinyXfate 2:0e2ef1edf01b 844 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
destinyXfate 2:0e2ef1edf01b 845 #ifdef PNG_SIZE_T
destinyXfate 2:0e2ef1edf01b 846 /* Added at libpng version 1.2.6 */
destinyXfate 2:0e2ef1edf01b 847 PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
destinyXfate 2:0e2ef1edf01b 848 png_size_t PNGAPI
destinyXfate 2:0e2ef1edf01b 849 png_convert_size(size_t size)
destinyXfate 2:0e2ef1edf01b 850 {
destinyXfate 2:0e2ef1edf01b 851 if (size > (png_size_t)-1)
destinyXfate 2:0e2ef1edf01b 852 PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */
destinyXfate 2:0e2ef1edf01b 853 return ((png_size_t)size);
destinyXfate 2:0e2ef1edf01b 854 }
destinyXfate 2:0e2ef1edf01b 855 #endif /* PNG_SIZE_T */
destinyXfate 2:0e2ef1edf01b 856 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
destinyXfate 2:0e2ef1edf01b 857