1893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 2893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* png.c - location for general purpose libpng functions 3893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * 466dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier * Last changed in libpng 1.2.46 [February 25, 2011] 566dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier * Copyright (c) 1998-2011 Glenn Randers-Pehrson 6893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 7893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 8a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott * 9a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott * This code is released under the libpng license. 10a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott * For conditions of distribution and use, see the disclaimer 11a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott * and license in png.h 12893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 13893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 14893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#define PNG_INTERNAL 15893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#define PNG_NO_EXTERN 165f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#define PNG_NO_PEDANTIC_WARNINGS 17893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#include "png.h" 1814cab8628b01f030647fb0a42dac7a5c031bb50eGeremy Condra#include <stdint.h> 19893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 20893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Generate a compiler error if there is an old png.h in the search path. */ 2166dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vanniertypedef version_1_2_46 Your_png_h_is_not_version_1_2_46; 22893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 23893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Version information for C files. This had better match the version 245f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * string defined in png.h. 255f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott */ 26893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 27893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_USE_GLOBAL_ARRAYS 28893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* png_libpng_ver was changed to a function in version 1.0.5c */ 29893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING; 30893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 31893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_READ_SUPPORTED 32893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 33893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* png_sig was changed to a function in version 1.0.5c */ 34893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Place to hold the signature string for a PNG file. */ 35893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; 36893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_READ_SUPPORTED */ 37893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 38893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Invoke global declarations for constant strings for known chunk types */ 39893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_IHDR; 40893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_IDAT; 41893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_IEND; 42893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_PLTE; 43893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_bKGD; 44893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_cHRM; 45893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_gAMA; 46893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_hIST; 47893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_iCCP; 48893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_iTXt; 49893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_oFFs; 50893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_pCAL; 51893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_sCAL; 52893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_pHYs; 53893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_sBIT; 54893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_sPLT; 55893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_sRGB; 56893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_tEXt; 57893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_tIME; 58893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_tRNS; 59893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_zTXt; 60893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 61893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_READ_SUPPORTED 62a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ 63893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 64a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Start of interlace block */ 65893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; 66893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 67a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Offset to next interlace block */ 68893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; 69893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 70a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Start of interlace block in the y direction */ 71893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; 72893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 73a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Offset to next interlace block in the y direction */ 74893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; 75893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 76893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Height of interlace block. This is not currently used - if you need 77893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * it, uncomment it here and in png.h 78893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1}; 79893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project*/ 80893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 81893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Mask to determine which pixels are valid in a pass */ 825f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick ScottPNG_CONST int FARDATA png_pass_mask[] = 835f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}; 84893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 85893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Mask to determine which pixels to overwrite while displaying */ 86893912bfc2683463dc3e2c445336752d012563d3The Android Open Source ProjectPNG_CONST int FARDATA png_pass_dsp_mask[] 87893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}; 88893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 89893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_READ_SUPPORTED */ 90893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_USE_GLOBAL_ARRAYS */ 91893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 92893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Tells libpng that we have already handled the first "num_bytes" bytes 93893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * of the PNG file signature. If the PNG data is embedded into another 94893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * stream we can set num_bytes = 8 so that libpng will not attempt to read 95893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * or write any of the magic bytes before it starts on the IHDR. 96893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 97893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 98893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_READ_SUPPORTED 99893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 100893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_set_sig_bytes(png_structp png_ptr, int num_bytes) 101893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 1025f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_debug(1, "in png_set_sig_bytes"); 1035f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 104a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 105a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return; 1065f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 107893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (num_bytes > 8) 108893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_error(png_ptr, "Too many bytes for PNG signature."); 109893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 110893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes); 111893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 112893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 113893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Checks whether the supplied bytes match the PNG signature. We allow 114893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * checking less than the full 8-byte signature so that those apps that 115893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * already read the first few bytes of a file to determine the file type 116893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * can simply check the remaining bytes for extra assurance. Returns 117893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * an integer less than, equal to, or greater than zero if sig is found, 118893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * respectively, to be less than, to match, or be greater than the correct 119893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * PNG signature (this is the same behaviour as strcmp, memcmp, etc). 120893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 121893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectint PNGAPI 122893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check) 123893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 124893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; 125893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (num_to_check > 8) 126893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project num_to_check = 8; 127893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project else if (num_to_check < 1) 128893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (-1); 129893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 130893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (start > 7) 131893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (-1); 132893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 133893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (start + num_to_check > 8) 134893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project num_to_check = 8 - start; 135893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 136893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((int)(png_memcmp(&sig[start], &png_signature[start], num_to_check))); 137893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 138893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 139893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_1_0_X) || defined(PNG_1_2_X) 140893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* (Obsolete) function to check signature bytes. It does not allow one 141893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * to check a partial signature. This function might be removed in the 142893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * future - use png_sig_cmp(). Returns true (nonzero) if the file is PNG. 143893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 144893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectint PNGAPI 145893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_check_sig(png_bytep sig, int num) 146893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 147893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num)); 148893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 149893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 150893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_READ_SUPPORTED */ 151893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 152893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 153893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Function to allocate memory for zlib and clear it to 0. */ 154893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_1_0_X 155893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoidpf PNGAPI 156893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 1575f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottvoidpf /* PRIVATE */ 158893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 159893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_zalloc(voidpf png_ptr, uInt items, uInt size) 160893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 161893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_voidp ptr; 162893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_structp p=(png_structp)png_ptr; 163893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_uint_32 save_flags=p->flags; 164893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_uint_32 num_bytes; 165893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 166a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 167a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return (NULL); 168893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (items > PNG_UINT_32_MAX/size) 169893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 170893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_warning (p, "Potential overflow in png_zalloc()"); 171893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (NULL); 172893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 173893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project num_bytes = (png_uint_32)items * size; 174893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 175893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project p->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK; 176893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptr = (png_voidp)png_malloc((png_structp)png_ptr, num_bytes); 177893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project p->flags=save_flags; 178893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 179893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_1_0_X) && !defined(PNG_NO_ZALLOC_ZERO) 180893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (ptr == NULL) 181893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((voidpf)ptr); 182893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 183893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (num_bytes > (png_uint_32)0x8000L) 184893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 185893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_memset(ptr, 0, (png_size_t)0x8000L); 186893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_memset((png_bytep)ptr + (png_size_t)0x8000L, 0, 187893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project (png_size_t)(num_bytes - (png_uint_32)0x8000L)); 188893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 189893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project else 190893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 191893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_memset(ptr, 0, (png_size_t)num_bytes); 192893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 193893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 194893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((voidpf)ptr); 195893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 196893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 197a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* Function to free memory for zlib */ 198893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_1_0_X 199893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 200893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 2015f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottvoid /* PRIVATE */ 202893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 203893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_zfree(voidpf png_ptr, voidpf ptr) 204893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 205893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_free((png_structp)png_ptr, (png_voidp)ptr); 206893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 207893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 208893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Reset the CRC variable to 32 bits of 1's. Care must be taken 209893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * in case CRC is > 32 bits to leave the top bits 0. 210893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 211893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid /* PRIVATE */ 212893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_reset_crc(png_structp png_ptr) 213893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 214893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->crc = crc32(0, Z_NULL, 0); 215893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 216893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 217893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Calculate the CRC over a section of data. We can only pass as 218893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * much data to this routine as the largest single buffer size. We 219893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * also check that this data will actually be used before going to the 220893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * trouble of calculating it. 221893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 222893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid /* PRIVATE */ 223893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length) 224893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 225893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project int need_crc = 1; 226893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 227893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr->chunk_name[0] & 0x20) /* ancillary */ 228893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 229893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == 230893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN)) 231893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project need_crc = 0; 232893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 233893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project else /* critical */ 234893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 235893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) 236893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project need_crc = 0; 237893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 238893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 239893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (need_crc) 240893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->crc = crc32(png_ptr->crc, ptr, (uInt)length); 241893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 242893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 243893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Allocate the memory for an info_struct for the application. We don't 244893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * really need the png_ptr, but it could potentially be useful in the 245893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * future. This should be used in favour of malloc(png_sizeof(png_info)) 246893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * and png_info_init() so that applications that want to use a shared 247893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * libpng don't have to be recompiled if png_info changes size. 248893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 249893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_infop PNGAPI 250893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_create_info_struct(png_structp png_ptr) 251893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 252893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_infop info_ptr; 253893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 2544215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in png_create_info_struct"); 2555f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 256a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 257a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return (NULL); 2585f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 259893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_USER_MEM_SUPPORTED 260893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO, 261893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->malloc_fn, png_ptr->mem_ptr); 262893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 263893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); 264893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 265893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (info_ptr != NULL) 266893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_info_init_3(&info_ptr, png_sizeof(png_info)); 267893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 268893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (info_ptr); 269893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 270893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 271893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* This function frees the memory associated with a single info struct. 272893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * Normally, one would use either png_destroy_read_struct() or 273893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * png_destroy_write_struct() to free an info struct, but this may be 274893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * useful for some applications. 275893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 276893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 277893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr) 278893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 279893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_infop info_ptr = NULL; 2805f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 2815f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_debug(1, "in png_destroy_info_struct"); 2825f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 283a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 284a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return; 285893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 286893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (info_ptr_ptr != NULL) 287893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project info_ptr = *info_ptr_ptr; 288893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 289893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (info_ptr != NULL) 290893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 291893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_info_destroy(png_ptr, info_ptr); 292893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 293893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_USER_MEM_SUPPORTED 294893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn, 295893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->mem_ptr); 296893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 297893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_destroy_struct((png_voidp)info_ptr); 298893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 299893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project *info_ptr_ptr = NULL; 300893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 301893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 302893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 303893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Initialize the info structure. This is now an internal function (0.89) 304893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * and applications using it are urged to use png_create_info_struct() 305893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * instead. 306893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 307893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_1_0_X) || defined(PNG_1_2_X) 308893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#undef png_info_init 309893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 310893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_info_init(png_infop info_ptr) 311893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 312893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project /* We only come here via pre-1.0.12-compiled applications */ 313893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_info_init_3(&info_ptr, 0); 314893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 315893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 316893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 317893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 318893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size) 319893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 320893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_infop info_ptr = *ptr_ptr; 321893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 3225f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_debug(1, "in png_info_init_3"); 3235f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 324a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr == NULL) 325a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return; 326893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 3274215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (png_sizeof(png_info) > png_info_struct_size) 328a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 329a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_destroy_struct(info_ptr); 330a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); 331a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott *ptr_ptr = info_ptr; 332a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 333893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 334a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Set everything to 0 */ 3354215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_memset(info_ptr, 0, png_sizeof(png_info)); 336893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 337893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 338893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 339893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 340893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_data_freer(png_structp png_ptr, png_infop info_ptr, 341893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project int freer, png_uint_32 mask) 342893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 3434215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in png_data_freer"); 3445f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 345893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr == NULL || info_ptr == NULL) 346893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return; 3475f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 3484215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (freer == PNG_DESTROY_WILL_FREE_DATA) 349893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project info_ptr->free_me |= mask; 3504215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project else if (freer == PNG_USER_WILL_FREE_DATA) 351893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project info_ptr->free_me &= ~mask; 352893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project else 353893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_warning(png_ptr, 354893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project "Unknown freer parameter in png_data_freer."); 355893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 356893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 357893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 358893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 359893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, 360893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project int num) 361893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 3624215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in png_free_data"); 3635f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 364893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr == NULL || info_ptr == NULL) 365893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return; 366893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 3675f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_TEXT_SUPPORTED 368a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free text item num or (if num == -1) all text items */ 369893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 370a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_TEXT) & info_ptr->free_me) 371893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 372a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_TEXT) 373893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 374893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 375a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (num != -1) 376a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 377a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->text && info_ptr->text[num].key) 378a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 379a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->text[num].key); 380a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->text[num].key = NULL; 381a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 382a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 383a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott else 384a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 385a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott int i; 386a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott for (i = 0; i < info_ptr->num_text; i++) 387a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i); 388a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->text); 389a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->text = NULL; 390a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->num_text=0; 391a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 392893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 393893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 394893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 3955f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_tRNS_SUPPORTED 396a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any tRNS entry */ 397893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 398a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_TRNS) & info_ptr->free_me) 399893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 400a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS)) 401893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 402a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 403a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->trans); 404a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->trans = NULL; 405a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_tRNS; 406893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifndef PNG_FREE_ME_SUPPORTED 407a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr->flags &= ~PNG_FLAG_FREE_TRNS; 408893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 409a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 410893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 411893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 4125f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_sCAL_SUPPORTED 413a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any sCAL entry */ 414893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 415a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_SCAL) & info_ptr->free_me) 416893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 417a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_SCAL) 418893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 419a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 420893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) 421a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->scal_s_width); 422a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->scal_s_height); 423a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->scal_s_width = NULL; 424a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->scal_s_height = NULL; 425893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 426a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_sCAL; 427a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 428893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 429893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 4305f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_pCAL_SUPPORTED 431a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any pCAL entry */ 432893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 433a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_PCAL) & info_ptr->free_me) 434893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 435a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_PCAL) 436893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 437a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 438a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->pcal_purpose); 439a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->pcal_units); 440a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->pcal_purpose = NULL; 441a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->pcal_units = NULL; 442a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->pcal_params != NULL) 443a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 444a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott int i; 445a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott for (i = 0; i < (int)info_ptr->pcal_nparams; i++) 446a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 447a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->pcal_params[i]); 4485f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott info_ptr->pcal_params[i] = NULL; 449a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 450a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->pcal_params); 451a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->pcal_params = NULL; 452a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 453a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_pCAL; 454a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 455893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 456893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 4575f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_iCCP_SUPPORTED 458a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any iCCP entry */ 459893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 460a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_ICCP) & info_ptr->free_me) 461893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 462a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_ICCP) 463893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 464a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 465a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->iccp_name); 466a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->iccp_profile); 467a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->iccp_name = NULL; 468a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->iccp_profile = NULL; 469a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_iCCP; 470a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 471893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 472893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 4735f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_sPLT_SUPPORTED 474a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free a given sPLT entry, or (if num == -1) all sPLT entries */ 475893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 476a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_SPLT) & info_ptr->free_me) 477893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 478a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_SPLT) 479893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 480893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 481a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (num != -1) 482893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 483a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->splt_palettes) 484a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 485a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->splt_palettes[num].name); 486a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->splt_palettes[num].entries); 487a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->splt_palettes[num].name = NULL; 488a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->splt_palettes[num].entries = NULL; 489a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 490a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 491a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott else 492a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 493a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->splt_palettes_num) 494a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 495a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott int i; 496a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) 497a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i); 498a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott 499a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->splt_palettes); 500a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->splt_palettes = NULL; 501a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->splt_palettes_num = 0; 502a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 503a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_sPLT; 504893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 505893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 506893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 507893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 5085f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 509a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr->unknown_chunk.data) 510a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 511a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, png_ptr->unknown_chunk.data); 512a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr->unknown_chunk.data = NULL; 513a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 5144215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 515893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 516a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_UNKN) & info_ptr->free_me) 517893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 518a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_UNKN) 519893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 520893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 521a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (num != -1) 522a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 523a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->unknown_chunks) 524a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 525a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->unknown_chunks[num].data); 526a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->unknown_chunks[num].data = NULL; 527a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 528a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 529a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott else 530a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 531a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott int i; 532893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 533a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->unknown_chunks_num) 534a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 535a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++) 536a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i); 537893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 538a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->unknown_chunks); 539a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->unknown_chunks = NULL; 540a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->unknown_chunks_num = 0; 541a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 542a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 543893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 544893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 545893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 5465f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_hIST_SUPPORTED 547a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any hIST entry */ 548893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 549a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_HIST) & info_ptr->free_me) 550893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 551a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST)) 552893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 553a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 554a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->hist); 555a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->hist = NULL; 556a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_hIST; 557893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifndef PNG_FREE_ME_SUPPORTED 558a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr->flags &= ~PNG_FLAG_FREE_HIST; 559893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 560a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 561893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 562893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 563a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any PLTE entry that was internally allocated */ 564893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 565a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_PLTE) & info_ptr->free_me) 566893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 567a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE)) 568893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 569a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 570a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_zfree(png_ptr, info_ptr->palette); 571a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->palette = NULL; 572a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_PLTE; 573893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifndef PNG_FREE_ME_SUPPORTED 574a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr->flags &= ~PNG_FLAG_FREE_PLTE; 575893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 576a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->num_palette = 0; 577a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 578893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 5795f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_INFO_IMAGE_SUPPORTED 580a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Free any image bits attached to the info structure */ 581893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 582a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if ((mask & PNG_FREE_ROWS) & info_ptr->free_me) 583893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 584a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (mask & PNG_FREE_ROWS) 585893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 586a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 587a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (info_ptr->row_pointers) 588a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 589a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott int row; 590a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott for (row = 0; row < (int)info_ptr->height; row++) 591a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott { 592a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->row_pointers[row]); 5935f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott info_ptr->row_pointers[row] = NULL; 594a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 595a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, info_ptr->row_pointers); 5965f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott info_ptr->row_pointers = NULL; 597a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 598a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->valid &= ~PNG_INFO_IDAT; 599a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott } 600893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 601893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 602893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_FREE_ME_SUPPORTED 6034215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (num == -1) 604a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->free_me &= ~mask; 605893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project else 606a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL); 607893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 608893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 609893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 610893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* This is an internal routine to free any memory that the info struct is 611893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * pointing to before re-using it or freeing the struct itself. Recall 612893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * that png_free() checks for NULL pointers for us. 613893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 614893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid /* PRIVATE */ 615893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_info_destroy(png_structp png_ptr, png_infop info_ptr) 616893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 6174215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in png_info_destroy"); 618893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 619893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1); 620893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 6215f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 622893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr->num_chunk_list) 623893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 624a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_free(png_ptr, png_ptr->chunk_list); 6255f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_ptr->chunk_list = NULL; 626a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr->num_chunk_list = 0; 627893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 628893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 629893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 630893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_info_init_3(&info_ptr, png_sizeof(png_info)); 631893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 632893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ 633893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 634893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* This function returns a pointer to the io_ptr associated with the user 635893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * functions. The application should free any memory associated with this 636893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * pointer before png_write_destroy() or png_read_destroy() are called. 637893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 638893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_voidp PNGAPI 639893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_get_io_ptr(png_structp png_ptr) 640893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 641a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 642a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return (NULL); 643893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (png_ptr->io_ptr); 644893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 645893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 646893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 6475f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_STDIO_SUPPORTED 648893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Initialize the default input/output functions for the PNG file. If you 649893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * use your own read or write routines, you can call either png_set_read_fn() 650893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * or png_set_write_fn() instead of png_init_io(). If you have defined 651893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't 652893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * necessarily available. 653893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 654893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectvoid PNGAPI 655893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_init_io(png_structp png_ptr, png_FILE_p fp) 656893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 6574215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in png_init_io"); 6585f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 659a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 660a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return; 6615f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 662893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->io_ptr = (png_voidp)fp; 663893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 664893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 665893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 6665f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_TIME_RFC1123_SUPPORTED 667893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Convert the supplied time into an RFC 1123 string suitable for use in 668893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * a "Creation Time" or other text-based time string. 669893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 670893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_charp PNGAPI 671893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_convert_to_rfc1123(png_structp png_ptr, png_timep ptime) 672893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 673893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project static PNG_CONST char short_months[12][4] = 674893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project {"Jan", "Feb", "Mar", "Apr", "May", "Jun", 675893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; 676893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 677a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 678a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return (NULL); 679893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (png_ptr->time_buffer == NULL) 680893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 681893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29* 682893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_sizeof(char))); 683893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 684893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 6855f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef _WIN32_WCE 686893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 687893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project wchar_t time_buf[29]; 688893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"), 689893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->day % 32, short_months[(ptime->month - 1) % 12], 690893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->year, ptime->hour % 24, ptime->minute % 60, 691893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->second % 61); 6925f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 6935f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 29, NULL, NULL); 694893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 695893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 696893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef USE_FAR_KEYWORD 697893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project { 698893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project char near_time_buf[29]; 6994215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_snprintf6(near_time_buf, 29, "%d %s %d %02d:%02d:%02d +0000", 700893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->day % 32, short_months[(ptime->month - 1) % 12], 701893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->year, ptime->hour % 24, ptime->minute % 60, 702893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->second % 61); 703893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_memcpy(png_ptr->time_buffer, near_time_buf, 704893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 29*png_sizeof(char)); 705893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project } 706893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#else 7074215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_snprintf6(png_ptr->time_buffer, 29, "%d %s %d %02d:%02d:%02d +0000", 708893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->day % 32, short_months[(ptime->month - 1) % 12], 709893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->year, ptime->hour % 24, ptime->minute % 60, 710893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project ptime->second % 61); 711893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 712893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* _WIN32_WCE */ 713893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((png_charp)png_ptr->time_buffer); 714893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 715893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_TIME_RFC1123_SUPPORTED */ 716893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 717893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ 718893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 719893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_charp PNGAPI 720893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_get_copyright(png_structp png_ptr) 721893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 722a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ 7235f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_STRING_COPYRIGHT 7245f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott return PNG_STRING_COPYRIGHT 7255f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 7265f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef __STDC__ 7275f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott return ((png_charp) PNG_STRING_NEWLINE \ 72866dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier "libpng version 1.2.46 - July 9, 2011" PNG_STRING_NEWLINE \ 72966dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \ 7305f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ 7315f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ 7325f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott PNG_STRING_NEWLINE); 7335f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 73466dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier return ((png_charp) "libpng version 1.2.46 - July 9, 2011\ 73566dce0da6a5db51ee0c2875517d3a6ca6cbbe53dEric Vannier Copyright (c) 1998-2011 Glenn Randers-Pehrson\ 7365f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott Copyright (c) 1996-1997 Andreas Dilger\ 7375f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."); 7385f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 7395f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 740893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 741893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 742893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* The following return the library version as a short string in the 743893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * format 1.0.0 through 99.99.99zz. To get the version of *.h files 744893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * used with your application, print out PNG_LIBPNG_VER_STRING, which 745893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * is defined in png.h. 746893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * Note: now there is no difference between png_get_libpng_ver() and 747893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard, 748893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project * it is guaranteed that png.c uses the correct version of png.h. 749893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project */ 750893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_charp PNGAPI 751893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_get_libpng_ver(png_structp png_ptr) 752893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 753893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project /* Version of *.c files used when building libpng */ 754a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ 755893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((png_charp) PNG_LIBPNG_VER_STRING); 756893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 757893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 758893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_charp PNGAPI 759893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_get_header_ver(png_structp png_ptr) 760893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 761893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project /* Version of *.h files used when building libpng */ 762a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ 763893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((png_charp) PNG_LIBPNG_VER_STRING); 764893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 765893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 766893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_charp PNGAPI 767893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_get_header_version(png_structp png_ptr) 768893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 769893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project /* Returns longer string containing both version and date */ 770a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ 7715f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef __STDC__ 772893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return ((png_charp) PNG_HEADER_VERSION_STRING 773893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifndef PNG_READ_SUPPORTED 774893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project " (NO READ SUPPORT)" 775893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 7765f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott PNG_STRING_NEWLINE); 7775f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 7785f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott return ((png_charp) PNG_HEADER_VERSION_STRING); 7795f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 780893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 781893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 782893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 783893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 784893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectint PNGAPI 785893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name) 786893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 787a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Check chunk_name and return "keep" value if it's on the list, else 0 */ 788893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project int i; 789893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project png_bytep p; 7904215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0) 791893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return 0; 7924215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project p = png_ptr->chunk_list + png_ptr->num_chunk_list*5 - 5; 7934215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project for (i = png_ptr->num_chunk_list; i; i--, p -= 5) 794893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project if (!png_memcmp(chunk_name, p, 4)) 7954215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project return ((int)*(p + 4)); 796893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return 0; 797893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 798893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif 799893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 800893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* This function, added to libpng-1.0.6g, is untested. */ 801893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectint PNGAPI 802893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_reset_zstream(png_structp png_ptr) 803893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 804a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (png_ptr == NULL) 805a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return Z_STREAM_ERROR; 806893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return (inflateReset(&png_ptr->zstream)); 807893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 808893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ 809893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 810893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* This function was added to libpng-1.0.7 */ 811893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_uint_32 PNGAPI 812893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_access_version_number(void) 813893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 814893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project /* Version of *.c files used when building libpng */ 815893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return((png_uint_32) PNG_LIBPNG_VER); 816893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 817893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 818893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 819893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) 8205f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifndef PNG_1_0_X 821a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott/* This function was added to libpng 1.2.0 */ 822893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectint PNGAPI 823893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_mmx_support(void) 824893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 825a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott /* Obsolete, to be removed from libpng-1.4.0 */ 826893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project return -1; 827893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 828893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_1_0_X */ 829893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_READ_SUPPORTED && PNG_ASSEMBLER_CODE_SUPPORTED */ 830893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project 831893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 832893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#ifdef PNG_SIZE_T 833893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project/* Added at libpng version 1.2.6 */ 834893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size)); 835893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_size_t PNGAPI 836893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Projectpng_convert_size(size_t size) 837893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project{ 838a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott if (size > (png_size_t)-1) 839a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */ 840a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott return ((png_size_t)size); 841893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project} 842893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* PNG_SIZE_T */ 8434215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 8444215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */ 8455f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_cHRM_SUPPORTED 8465f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_CHECK_cHRM_SUPPORTED 847a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott 8485f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottvoid /* PRIVATE */ 8495f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottpng_64bit_product (long v1, long v2, unsigned long *hi_product, 8504215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project unsigned long *lo_product) 8514215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project{ 85214cab8628b01f030647fb0a42dac7a5c031bb50eGeremy Condra int64_t x = (int64_t)v1 * (int64_t)v2; 85314cab8628b01f030647fb0a42dac7a5c031bb50eGeremy Condra *hi_product = (unsigned long) (x >> 32); 85414cab8628b01f030647fb0a42dac7a5c031bb50eGeremy Condra *lo_product = (unsigned long) x; 8554215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project} 856a0bb96c34e65378853ee518bac502842d26c2d1aPatrick Scott 8575f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottint /* PRIVATE */ 8584215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Projectpng_check_cHRM_fixed(png_structp png_ptr, 8594215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, 8604215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, 8614215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_fixed_point blue_x, png_fixed_point blue_y) 8624215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project{ 8634215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project int ret = 1; 8644215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project unsigned long xy_hi,xy_lo,yx_hi,yx_lo; 8654215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 8664215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_debug(1, "in function png_check_cHRM_fixed"); 8675f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 8684215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (png_ptr == NULL) 8694215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project return 0; 8704215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 8714215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (white_x < 0 || white_y <= 0 || 8724215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project red_x < 0 || red_y < 0 || 8734215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project green_x < 0 || green_y < 0 || 8744215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project blue_x < 0 || blue_y < 0) 8754215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 8764215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, 8774215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project "Ignoring attempt to set negative chromaticity value"); 8784215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 8794215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 8804215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (white_x > (png_fixed_point) PNG_UINT_31_MAX || 8814215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project white_y > (png_fixed_point) PNG_UINT_31_MAX || 8824215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project red_x > (png_fixed_point) PNG_UINT_31_MAX || 8834215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project red_y > (png_fixed_point) PNG_UINT_31_MAX || 8844215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project green_x > (png_fixed_point) PNG_UINT_31_MAX || 8854215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project green_y > (png_fixed_point) PNG_UINT_31_MAX || 8864215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project blue_x > (png_fixed_point) PNG_UINT_31_MAX || 8874215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project blue_y > (png_fixed_point) PNG_UINT_31_MAX ) 8884215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 8894215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, 8904215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project "Ignoring attempt to set chromaticity value exceeding 21474.83"); 8914215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 8924215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 8934215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (white_x > 100000L - white_y) 8944215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 8954215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, "Invalid cHRM white point"); 8964215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 8974215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 8984215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (red_x > 100000L - red_y) 8994215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 9004215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, "Invalid cHRM red point"); 9014215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 9024215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 9034215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (green_x > 100000L - green_y) 9044215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 9054215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, "Invalid cHRM green point"); 9064215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 9074215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 9084215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (blue_x > 100000L - blue_y) 9094215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 9104215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, "Invalid cHRM blue point"); 9114215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 9124215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 9134215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 9144215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_64bit_product(green_x - red_x, blue_y - red_y, &xy_hi, &xy_lo); 9154215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_64bit_product(green_y - red_y, blue_x - red_x, &yx_hi, &yx_lo); 9164215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 9174215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project if (xy_hi == yx_hi && xy_lo == yx_lo) 9184215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project { 9194215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project png_warning(png_ptr, 9204215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project "Ignoring attempt to set cHRM RGB triangle with zero area"); 9214215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project ret = 0; 9224215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project } 9234215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project 9244215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project return ret; 9254215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project} 9265f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif /* PNG_CHECK_cHRM_SUPPORTED */ 9274215dd1533c56e1a89ae6f1d6ea68677fac27fdaThe Android Open Source Project#endif /* PNG_cHRM_SUPPORTED */ 9285f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9295f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottvoid /* PRIVATE */ 9305f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scottpng_check_IHDR(png_structp png_ptr, 9315f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_uint_32 width, png_uint_32 height, int bit_depth, 9325f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott int color_type, int interlace_type, int compression_type, 9335f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott int filter_type) 9345f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott{ 9355f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott int error = 0; 9365f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9375f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott /* Check for width and height valid values */ 9385f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (width == 0) 9395f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9405f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Image width is zero in IHDR"); 9415f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9425f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9435f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9445f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (height == 0) 9455f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9465f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Image height is zero in IHDR"); 9475f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9485f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9495f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9505f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_SET_USER_LIMITS_SUPPORTED 9515f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX) 9525f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 9535f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (width > PNG_USER_WIDTH_MAX) 9545f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 9555f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9565f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Image width exceeds user limit in IHDR"); 9575f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9585f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9595f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9605f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_SET_USER_LIMITS_SUPPORTED 9615f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX) 9625f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 9635f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (height > PNG_USER_HEIGHT_MAX) 9645f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 9655f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9665f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Image height exceeds user limit in IHDR"); 9675f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9685f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9695f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9705f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (width > PNG_UINT_31_MAX) 9715f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9725f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid image width in IHDR"); 9735f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9745f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9755f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9765f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if ( height > PNG_UINT_31_MAX) 9775f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9785f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid image height in IHDR"); 9795f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9805f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9815f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9825f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if ( width > (PNG_UINT_32_MAX 9835f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott >> 3) /* 8-byte RGBA pixels */ 9845f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott - 64 /* bigrowbuf hack */ 9855f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott - 1 /* filter byte */ 9865f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott - 7*8 /* rounding of width to multiple of 8 pixels */ 9875f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott - 8) /* extra max_pixel_depth pad */ 9885f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Width is too large for libpng to process pixels"); 9895f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9905f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott /* Check other values */ 9915f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && 9925f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott bit_depth != 8 && bit_depth != 16) 9935f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 9945f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid bit depth in IHDR"); 9955f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 9965f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 9975f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 9985f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (color_type < 0 || color_type == 1 || 9995f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott color_type == 5 || color_type > 6) 10005f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10015f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid color type in IHDR"); 10025f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10035f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10045f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10055f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || 10065f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott ((color_type == PNG_COLOR_TYPE_RGB || 10075f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott color_type == PNG_COLOR_TYPE_GRAY_ALPHA || 10085f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) 10095f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10105f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR"); 10115f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10125f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10135f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10145f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (interlace_type >= PNG_INTERLACE_LAST) 10155f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10165f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Unknown interlace method in IHDR"); 10175f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10185f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10195f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10205f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (compression_type != PNG_COMPRESSION_TYPE_BASE) 10215f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10225f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Unknown compression method in IHDR"); 10235f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10245f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10255f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10265f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#ifdef PNG_MNG_FEATURES_SUPPORTED 10275f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott /* Accept filter_method 64 (intrapixel differencing) only if 10285f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and 10295f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * 2. Libpng did not read a PNG signature (this filter_method is only 10305f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * used in PNG datastreams that are embedded in MNG datastreams) and 10315f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * 3. The application called png_permit_mng_features with a mask that 10325f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * included PNG_FLAG_MNG_FILTER_64 and 10335f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * 4. The filter_method is 64 and 10345f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott * 5. The color_type is RGB or RGBA 10355f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott */ 10365f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) && 10375f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_ptr->mng_features_permitted) 10385f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "MNG features are not allowed in a PNG datastream"); 10395f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10405f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (filter_type != PNG_FILTER_TYPE_BASE) 10415f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10425f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && 10435f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && 10445f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) && 10455f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott (color_type == PNG_COLOR_TYPE_RGB || 10465f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott color_type == PNG_COLOR_TYPE_RGB_ALPHA))) 10475f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10485f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Unknown filter method in IHDR"); 10495f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10505f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10515f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10525f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) 10535f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10545f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Invalid filter method in IHDR"); 10555f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10565f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10575f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10585f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10595f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#else 10605f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (filter_type != PNG_FILTER_TYPE_BASE) 10615f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott { 10625f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_warning(png_ptr, "Unknown filter method in IHDR"); 10635f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott error = 1; 10645f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott } 10655f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott#endif 10665f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott 10675f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott if (error == 1) 10685f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott png_error(png_ptr, "Invalid IHDR data"); 10695f6bd84e375226bf228fc8ac90318957ec9e1e7fPatrick Scott} 1070893912bfc2683463dc3e2c445336752d012563d3The Android Open Source Project#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ 1071