diff options
Diffstat (limited to 'libpng/png.c')
| -rw-r--r-- | libpng/png.c | 83 |
1 files changed, 38 insertions, 45 deletions
diff --git a/libpng/png.c b/libpng/png.c index ff02c565..757c755f 100644 --- a/libpng/png.c +++ b/libpng/png.c @@ -1,10 +1,10 @@ /* png.c - location for general purpose libpng functions * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) + * Copyright (c) 2018-2019 Cosmin Truta + * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson + * Copyright (c) 1996-1997 Andreas Dilger + * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. * * This code is released under the libpng license. * For conditions of distribution and use, see the disclaimer @@ -14,7 +14,7 @@ #include "pngpriv.h" /* Generate a compiler error if there is an old png.h in the search path. */ -typedef png_libpng_version_1_6_34 Your_png_h_is_not_version_1_6_34; +typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37; #ifdef __GNUC__ /* The version tests may need to be added to, but the problem warning has @@ -71,7 +71,7 @@ png_set_sig_bytes(png_structrp png_ptr, int num_bytes) * PNG signature (this is the same behavior as strcmp, memcmp, etc). */ int PNGAPI -png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check) +png_sig_cmp(png_const_bytep sig, size_t start, size_t num_to_check) { png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; @@ -136,7 +136,7 @@ png_reset_crc(png_structrp png_ptr) * trouble of calculating it. */ void /* PRIVATE */ -png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length) +png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, size_t length) { int need_crc = 1; @@ -421,7 +421,7 @@ png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr) * those cases where it does anything other than a memset. */ PNG_FUNCTION(void,PNGAPI -png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size), +png_info_init_3,(png_infopp ptr_ptr, size_t png_info_struct_size), PNG_DEPRECATED) { png_inforp info_ptr = *ptr_ptr; @@ -736,7 +736,7 @@ png_save_int_32(png_bytep buf, png_int_32 i) int PNGAPI png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime) { - static PNG_CONST char short_months[12][4] = + static const char short_months[12][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; @@ -814,20 +814,14 @@ png_get_copyright(png_const_structrp png_ptr) #ifdef PNG_STRING_COPYRIGHT return PNG_STRING_COPYRIGHT #else -# ifdef __STDC__ return PNG_STRING_NEWLINE \ - "libpng version 1.6.34 - September 29, 2017" PNG_STRING_NEWLINE \ - "Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson" \ + "libpng version 1.6.37" PNG_STRING_NEWLINE \ + "Copyright (c) 2018-2019 Cosmin Truta" PNG_STRING_NEWLINE \ + "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \ PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ PNG_STRING_NEWLINE; -# else - return "libpng version 1.6.34 - September 29, 2017\ - Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\ - Copyright (c) 1996-1997 Andreas Dilger\ - Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; -# endif #endif } @@ -942,7 +936,7 @@ png_handle_as_unknown(png_const_structrp png_ptr, png_const_bytep chunk_name) /* The code is the fifth byte after each four byte string. Historically this * code was always searched from the end of the list, this is no longer - * necessary because the 'set' routine handles duplicate entries correcty. + * necessary because the 'set' routine handles duplicate entries correctly. */ do /* num_chunk_list > 0, so at least one */ { @@ -1121,7 +1115,7 @@ png_colorspace_set_gamma(png_const_structrp png_ptr, png_colorspacerp colorspace, png_fixed_point gAMA) { /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't - * occur. Since the fixed point representation is asymetrical it is + * occur. Since the fixed point representation is asymmetrical it is * possible for 1/gamma to overflow the limit of 21474 and this means the * gamma value must be at least 5/100000 and hence at most 20000.0. For * safety the limits here are a little narrower. The values are 0.00016 to @@ -2067,7 +2061,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace, */ /* Data checks (could be skipped). These checks must be independent of the - * version number; however, the version number doesn't accomodate changes in + * version number; however, the version number doesn't accommodate changes in * the header fields (just the known tags and the interpretation of the * data.) */ @@ -2707,7 +2701,7 @@ png_check_IHDR(png_const_structrp png_ptr, #if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED) /* ASCII to fp functions */ -/* Check an ASCII formated floating point value, see the more detailed +/* Check an ASCII formatted floating point value, see the more detailed * comments in pngpriv.h */ /* The following is used internally to preserve the sticky flags */ @@ -2715,11 +2709,11 @@ png_check_IHDR(png_const_structrp png_ptr, #define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY)) int /* PRIVATE */ -png_check_fp_number(png_const_charp string, png_size_t size, int *statep, +png_check_fp_number(png_const_charp string, size_t size, int *statep, png_size_tp whereami) { int state = *statep; - png_size_t i = *whereami; + size_t i = *whereami; while (i < size) { @@ -2842,10 +2836,10 @@ PNG_FP_End: /* The same but for a complete string. */ int -png_check_fp_string(png_const_charp string, png_size_t size) +png_check_fp_string(png_const_charp string, size_t size) { int state=0; - png_size_t char_index=0; + size_t char_index=0; if (png_check_fp_number(string, size, &state, &char_index) != 0 && (char_index == size || string[char_index] == 0)) @@ -2906,7 +2900,7 @@ png_pow10(int power) #pragma GCC diagnostic warning "-Wstrict-overflow=2" #endif /* GCC_STRICT_OVERFLOW */ void /* PRIVATE */ -png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size, +png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, size_t size, double fp, unsigned int precision) { /* We use standard functions from math.h, but not printf because @@ -3134,11 +3128,11 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size, /* The total output count (max) is now 4+precision */ /* Check for an exponent, if we don't need one we are - * done and just need to terminate the string. At - * this point exp_b10==(-1) is effectively a flag - it got - * to '-1' because of the decrement after outputting - * the decimal point above (the exponent required is - * *not* -1!) + * done and just need to terminate the string. At this + * point, exp_b10==(-1) is effectively a flag: it got + * to '-1' because of the decrement, after outputting + * the decimal point above. (The exponent required is + * *not* -1.) */ if (exp_b10 >= (-1) && exp_b10 <= 2) { @@ -3237,7 +3231,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size, */ void /* PRIVATE */ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii, - png_size_t size, png_fixed_point fp) + size_t size, png_fixed_point fp) { /* Require space for 10 decimal digits, a decimal point, a minus sign and a * trailing \0, 13 characters: @@ -3976,18 +3970,18 @@ png_gamma_correct(png_structrp png_ptr, unsigned int value, */ static void png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable, - PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val) + unsigned int shift, png_fixed_point gamma_val) { /* Various values derived from 'shift': */ - PNG_CONST unsigned int num = 1U << (8U - shift); + unsigned int num = 1U << (8U - shift); #ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED /* CSE the division and work round wacky GCC warnings (see the comments * in png_gamma_8bit_correct for where these come from.) */ - PNG_CONST double fmax = 1./(((png_int_32)1 << (16U - shift))-1); + double fmax = 1.0 / (((png_int_32)1 << (16U - shift)) - 1); #endif - PNG_CONST unsigned int max = (1U << (16U - shift))-1U; - PNG_CONST unsigned int max_by_2 = 1U << (15U-shift); + unsigned int max = (1U << (16U - shift)) - 1U; + unsigned int max_by_2 = 1U << (15U - shift); unsigned int i; png_uint_16pp table = *ptable = @@ -4053,10 +4047,10 @@ png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable, */ static void png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable, - PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val) + unsigned int shift, png_fixed_point gamma_val) { - PNG_CONST unsigned int num = 1U << (8U - shift); - PNG_CONST unsigned int max = (1U << (16U - shift))-1U; + unsigned int num = 1U << (8U - shift); + unsigned int max = (1U << (16U - shift))-1U; unsigned int i; png_uint_32 last; @@ -4121,7 +4115,7 @@ png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable, */ static void png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable, - PNG_CONST png_fixed_point gamma_val) + png_fixed_point gamma_val) { unsigned int i; png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256); @@ -4344,7 +4338,7 @@ png_set_option(png_structrp png_ptr, int option, int onoff) png_uint_32 setting = (2U + (onoff != 0)) << option; png_uint_32 current = png_ptr->options; - png_ptr->options = (png_uint_32)(((current & ~mask) | setting) & 0xff); + png_ptr->options = (png_uint_32)((current & ~mask) | setting); return (int)(current & mask) >> option; } @@ -4594,8 +4588,7 @@ png_image_free(png_imagep image) if (image != NULL && image->opaque != NULL && image->opaque->error_buf == NULL) { - /* Ignore errors here: */ - (void)png_safe_execute(image, png_image_free_function, image); + png_image_free_function(image); image->opaque = NULL; } } |