fries/GRRLIB
1
0
Fork 0
mirror of https://github.com/GRRLIB/GRRLIB.git synced 2024-11-22 15:02:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

libpng updated to version 1.6.20.

Browse source
This commit is contained in:
Crayon2000 2015-12-28 19:29:46 -05:00
parent 6d2adb576d
commit 539a46ad8d
18 changed files with 335 additions and 392 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
GRRLIB/lib/png/LICENSE
View file

@ -10,10 +10,11 @@ this sentence.
This code is released under the libpng license. This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000, through 1.6.18, July 23, 2015, are libpng versions 1.0.7, July 1, 2000, through 1.6.20, December 3, 2015, are
Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, are
distributed according to the same disclaimer and license as libpng-1.0.6 derived from libpng-1.0.6, and are distributed according to the same
with the following individuals added to the list of Contributing Authors: disclaimer and license as libpng-1.0.6 with the following individuals
added to the list of Contributing Authors:
Simon-Pierre Cadieux Simon-Pierre Cadieux
Eric S. Raymond Eric S. Raymond
@ -32,18 +33,20 @@ and with the following additions to the disclaimer:
the user. the user.
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
Copyright (c) 1998-2000 Glenn Randers-Pehrson, and are distributed according Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
to the same disclaimer and license as libpng-0.96, with the following libpng-0.96, and are distributed according to the same disclaimer and
individuals added to the list of Contributing Authors: license as libpng-0.96, with the following individuals added to the list
of Contributing Authors:
Tom Lane Tom Lane
Glenn Randers-Pehrson Glenn Randers-Pehrson
Willem van Schaik Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May 1997, are libpng versions 0.89, June 1996, through 0.96, May 1997, are
Copyright (c) 1996-1997 Andreas Dilger, and are Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
distributed according to the same disclaimer and license as libpng-0.88, and are distributed according to the same disclaimer and license as
with the following individuals added to the list of Contributing Authors: libpng-0.88, with the following individuals added to the list of
Contributing Authors:
John Bowler John Bowler
Kevin Bracey Kevin Bracey
@ -90,6 +93,8 @@ supporting the PNG file format in commercial products. If you use this
source code in a product, acknowledgment is not required but would be source code in a product, acknowledgment is not required but would be
appreciated. appreciated.
END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
A "png_get_copyright" function is available, for convenient use in "about" A "png_get_copyright" function is available, for convenient use in "about"
boxes and the like: boxes and the like:
@ -104,4 +109,4 @@ the additional disclaimers inserted at version 1.0.7.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
July 23, 2015 December 3, 2015

61
GRRLIB/lib/png/png.c
View file

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -14,7 +14,7 @@
#include "pngpriv.h" #include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_18 Your_png_h_is_not_version_1_6_18; typedef png_libpng_version_1_6_20 Your_png_h_is_not_version_1_6_20;
/* Tells libpng that we have already handled the first "num_bytes" bytes /* Tells libpng that we have already handled the first "num_bytes" bytes
* of the PNG file signature. If the PNG data is embedded into another * of the PNG file signature. If the PNG data is embedded into another
@ -26,15 +26,20 @@ typedef png_libpng_version_1_6_18 Your_png_h_is_not_version_1_6_18;
void PNGAPI void PNGAPI
png_set_sig_bytes(png_structrp png_ptr, int num_bytes) png_set_sig_bytes(png_structrp png_ptr, int num_bytes)
{ {
unsigned int nb = (unsigned int)num_bytes;
png_debug(1, "in png_set_sig_bytes"); png_debug(1, "in png_set_sig_bytes");
if (png_ptr == NULL) if (png_ptr == NULL)
return; return;
if (num_bytes > 8) if (num_bytes < 0)
nb = 0;
if (nb > 8)
png_error(png_ptr, "Too many bytes for PNG signature"); png_error(png_ptr, "Too many bytes for PNG signature");
png_ptr->sig_bytes = (png_byte)((num_bytes < 0 ? 0 : num_bytes) & 0xff); png_ptr->sig_bytes = (png_byte)nb;
} }
/* Checks whether the supplied bytes match the PNG signature. We allow /* Checks whether the supplied bytes match the PNG signature. We allow
@ -413,6 +418,8 @@ png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
free(info_ptr); free(info_ptr);
info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL, info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL,
(sizeof *info_ptr))); (sizeof *info_ptr)));
if (info_ptr == NULL)
return;
*ptr_ptr = info_ptr; *ptr_ptr = info_ptr;
} }
@ -664,19 +671,20 @@ png_init_io(png_structrp png_ptr, png_FILE_p fp)
# endif # endif
# ifdef PNG_SAVE_INT_32_SUPPORTED # ifdef PNG_SAVE_INT_32_SUPPORTED
/* The png_save_int_32 function assumes integers are stored in two's /* PNG signed integers are saved in 32-bit 2's complement format. ANSI C-90
* complement format. If this isn't the case, then this routine needs to * defines a cast of a signed integer to an unsigned integer either to preserve
* be modified to write data in two's complement format. Note that, * the value, if it is positive, or to calculate:
* the following works correctly even if png_int_32 has more than 32 bits *
* (compare the more complex code required on read for sign extension.) * (UNSIGNED_MAX+1) + integer
*
* Where UNSIGNED_MAX is the appropriate maximum unsigned value, so when the
* negative integral value is added the result will be an unsigned value
* correspnding to the 2's complement representation.
*/ */
void PNGAPI void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i) png_save_int_32(png_bytep buf, png_int_32 i)
{ {
buf[0] = (png_byte)((i >> 24) & 0xff); png_save_uint_32(buf, i);
buf[1] = (png_byte)((i >> 16) & 0xff);
buf[2] = (png_byte)((i >> 8) & 0xff);
buf[3] = (png_byte)(i & 0xff);
} }
# endif # endif
@ -722,6 +730,7 @@ png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
APPEND(':'); APPEND(':');
APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second); APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second);
APPEND_STRING(" +0000"); /* This reliably terminates the buffer */ APPEND_STRING(" +0000"); /* This reliably terminates the buffer */
PNG_UNUSED (pos)
# undef APPEND # undef APPEND
# undef APPEND_NUMBER # undef APPEND_NUMBER
@ -766,13 +775,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else #else
# ifdef __STDC__ # ifdef __STDC__
return PNG_STRING_NEWLINE \ return PNG_STRING_NEWLINE \
"libpng version 1.6.18 - July 23, 2015" PNG_STRING_NEWLINE \ "libpng version 1.6.20 - December 3, 2015" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \ "Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE; PNG_STRING_NEWLINE;
# else # else
return "libpng version 1.6.18 - July 23, 2015\ return "libpng version 1.6.20 - December 3, 2015\
Copyright (c) 1998-2015 Glenn Randers-Pehrson\ Copyright (c) 1998-2015 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\ Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -1703,7 +1712,6 @@ png_colorspace_set_chromaticities(png_const_structrp png_ptr,
*/ */
colorspace->flags |= PNG_COLORSPACE_INVALID; colorspace->flags |= PNG_COLORSPACE_INVALID;
png_error(png_ptr, "internal error checking chromaticities"); png_error(png_ptr, "internal error checking chromaticities");
break;
} }
return 0; /* failed */ return 0; /* failed */
@ -1731,7 +1739,6 @@ png_colorspace_set_endpoints(png_const_structrp png_ptr,
default: default:
colorspace->flags |= PNG_COLORSPACE_INVALID; colorspace->flags |= PNG_COLORSPACE_INVALID;
png_error(png_ptr, "internal error checking chromaticities"); png_error(png_ptr, "internal error checking chromaticities");
break;
} }
return 0; /* failed */ return 0; /* failed */
@ -2057,8 +2064,8 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+12); /* profile/device class */ temp = png_get_uint_32(profile+12); /* profile/device class */
switch (temp) switch (temp)
{ {
case 0x73636E72: /* 'scnr' */ case 0x73636e72: /* 'scnr' */
case 0x6D6E7472: /* 'mntr' */ case 0x6d6e7472: /* 'mntr' */
case 0x70727472: /* 'prtr' */ case 0x70727472: /* 'prtr' */
case 0x73706163: /* 'spac' */ case 0x73706163: /* 'spac' */
/* All supported */ /* All supported */
@ -2069,7 +2076,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
return png_icc_profile_error(png_ptr, colorspace, name, temp, return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid embedded Abstract ICC profile"); "invalid embedded Abstract ICC profile");
case 0x6C696E6B: /* 'link' */ case 0x6c696e6b: /* 'link' */
/* DeviceLink profiles cannot be interpreted in a non-device specific /* DeviceLink profiles cannot be interpreted in a non-device specific
* fashion, if an app uses the AToB0Tag in the profile the results are * fashion, if an app uses the AToB0Tag in the profile the results are
* undefined unless the result is sent to the intended device, * undefined unless the result is sent to the intended device,
@ -2079,7 +2086,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
return png_icc_profile_error(png_ptr, colorspace, name, temp, return png_icc_profile_error(png_ptr, colorspace, name, temp,
"unexpected DeviceLink ICC profile class"); "unexpected DeviceLink ICC profile class");
case 0x6E6D636C: /* 'nmcl' */ case 0x6e6d636c: /* 'nmcl' */
/* A NamedColor profile is also device specific, however it doesn't /* A NamedColor profile is also device specific, however it doesn't
* contain an AToB0 tag that is open to misinterpretation. Almost * contain an AToB0 tag that is open to misinterpretation. Almost
* certainly it will fail the tests below. * certainly it will fail the tests below.
@ -2105,8 +2112,8 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+20); temp = png_get_uint_32(profile+20);
switch (temp) switch (temp)
{ {
case 0x58595A20: /* 'XYZ ' */ case 0x58595a20: /* 'XYZ ' */
case 0x4C616220: /* 'Lab ' */ case 0x4c616220: /* 'Lab ' */
break; break;
default: default:
@ -2276,7 +2283,7 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
} }
/* Length *and* intent must match */ /* Length *and* intent must match */
if (length == png_sRGB_checks[i].length && if (length == (png_uint_32) png_sRGB_checks[i].length &&
intent == (png_uint_32) png_sRGB_checks[i].intent) intent == (png_uint_32) png_sRGB_checks[i].intent)
{ {
/* Now calculate the adler32 if not done already. */ /* Now calculate the adler32 if not done already. */
@ -2336,7 +2343,7 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
* Fall through to "no match". * Fall through to "no match".
*/ */
png_chunk_report(png_ptr, png_chunk_report(png_ptr,
"Not recognizing known sRGB profile that has been edited", "Not recognizing known sRGB profile that has been edited",
PNG_CHUNK_WARNING); PNG_CHUNK_WARNING);
break; break;
# endif # endif
@ -3144,7 +3151,7 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
/* Avoid overflow here on the minimum integer. */ /* Avoid overflow here on the minimum integer. */
if (fp < 0) if (fp < 0)
*ascii++ = 45, --size, num = -fp; *ascii++ = 45, num = -fp;
else else
num = fp; num = fp;
@ -3675,7 +3682,7 @@ png_exp(png_fixed_point x)
if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */ if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
{ {
/* Obtain a 4-bit approximation */ /* Obtain a 4-bit approximation */
png_uint_32 e = png_32bit_exp[(x >> 12) & 0xf]; png_uint_32 e = png_32bit_exp[(x >> 12) & 0x0f];
/* Incorporate the low 12 bits - these decrease the returned value by /* Incorporate the low 12 bits - these decrease the returned value by
* multiplying by a number less than 1 if the bit is set. The multiplier * multiplying by a number less than 1 if the bit is set. The multiplier

407
GRRLIB/lib/png/png.h
View file

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.6.18, July 23, 2015 * libpng version 1.6.20, December 3, 2015
* *
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,234 +12,9 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.18, July 23, 2015: Glenn * libpng versions 0.97, January 1998, through 1.6.20, December 3, 2015:
* Glenn Randers-Pehrson.
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
*
* Note about libpng version numbers:
*
* Due to various miscommunications, unforeseen code incompatibilities
* and occasional factors outside the authors' control, version numbering
* on the library has not always been consistent and straightforward.
* The following table summarizes matters since version 0.89c, which was
* the first widely used release:
*
* source png.h png.h shared-lib
* version string int version
* ------- ------ ----- ----------
* 0.89c "1.0 beta 3" 0.89 89 1.0.89
* 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
* 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
* 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
* 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
* 0.97c 0.97 97 2.0.97
* 0.98 0.98 98 2.0.98
* 0.99 0.99 98 2.0.99
* 0.99a-m 0.99 99 2.0.99
* 1.00 1.00 100 2.1.0 [100 should be 10000]
* 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
* 1.0.1 png.h string is 10001 2.1.0
* 1.0.1a-e identical to the 10002 from here on, the shared library
* 1.0.2 source version) 10002 is 2.V where V is the source code
* 1.0.2a-b 10003 version, except as noted.
* 1.0.3 10003
* 1.0.3a-d 10004
* 1.0.4 10004
* 1.0.4a-f 10005
* 1.0.5 (+ 2 patches) 10005
* 1.0.5a-d 10006
* 1.0.5e-r 10100 (not source compatible)
* 1.0.5s-v 10006 (not binary compatible)
* 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
* 1.0.6d-f 10007 (still binary incompatible)
* 1.0.6g 10007
* 1.0.6h 10007 10.6h (testing xy.z so-numbering)
* 1.0.6i 10007 10.6i
* 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
* 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible)
* 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible)
* 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
* 1.0.7 1 10007 (still compatible)
* 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
* 1.0.8rc1 1 10008 2.1.0.8rc1
* 1.0.8 1 10008 2.1.0.8
* 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
* 1.0.9rc1 1 10009 2.1.0.9rc1
* 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
* 1.0.9rc2 1 10009 2.1.0.9rc2
* 1.0.9 1 10009 2.1.0.9
* 1.0.10beta1 1 10010 2.1.0.10beta1
* 1.0.10rc1 1 10010 2.1.0.10rc1
* 1.0.10 1 10010 2.1.0.10
* 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
* 1.0.11rc1 1 10011 2.1.0.11rc1
* 1.0.11 1 10011 2.1.0.11
* 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
* 1.0.12rc1 2 10012 2.1.0.12rc1
* 1.0.12 2 10012 2.1.0.12
* 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned)
* 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
* 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
* 1.2.0rc1 3 10200 3.1.2.0rc1
* 1.2.0 3 10200 3.1.2.0
* 1.2.1beta1-4 3 10201 3.1.2.1beta1-4
* 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
* 1.2.1 3 10201 3.1.2.1
* 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
* 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
* 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
* 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
* 1.0.13 10 10013 10.so.0.1.0.13
* 1.2.2 12 10202 12.so.0.1.2.2
* 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
* 1.2.3 12 10203 12.so.0.1.2.3
* 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
* 1.0.14rc1 13 10014 10.so.0.1.0.14rc1
* 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
* 1.0.14 10 10014 10.so.0.1.0.14
* 1.2.4 13 10204 12.so.0.1.2.4
* 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
* 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3
* 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3
* 1.0.15 10 10015 10.so.0.1.0.15
* 1.2.5 13 10205 12.so.0.1.2.5
* 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
* 1.0.16 10 10016 10.so.0.1.0.16
* 1.2.6 13 10206 12.so.0.1.2.6
* 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
* 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
* 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
* 1.0.17 10 10017 12.so.0.1.0.17
* 1.2.7 13 10207 12.so.0.1.2.7
* 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
* 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
* 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
* 1.0.18 10 10018 12.so.0.1.0.18
* 1.2.8 13 10208 12.so.0.1.2.8
* 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
* 1.2.9beta4-11 13 10209 12.so.0.9[.0]
* 1.2.9rc1 13 10209 12.so.0.9[.0]
* 1.2.9 13 10209 12.so.0.9[.0]
* 1.2.10beta1-7 13 10210 12.so.0.10[.0]
* 1.2.10rc1-2 13 10210 12.so.0.10[.0]
* 1.2.10 13 10210 12.so.0.10[.0]
* 1.4.0beta1-5 14 10400 14.so.0.0[.0]
* 1.2.11beta1-4 13 10211 12.so.0.11[.0]
* 1.4.0beta7-8 14 10400 14.so.0.0[.0]
* 1.2.11 13 10211 12.so.0.11[.0]
* 1.2.12 13 10212 12.so.0.12[.0]
* 1.4.0beta9-14 14 10400 14.so.0.0[.0]
* 1.2.13 13 10213 12.so.0.13[.0]
* 1.4.0beta15-36 14 10400 14.so.0.0[.0]
* 1.4.0beta37-87 14 10400 14.so.14.0[.0]
* 1.4.0rc01 14 10400 14.so.14.0[.0]
* 1.4.0beta88-109 14 10400 14.so.14.0[.0]
* 1.4.0rc02-08 14 10400 14.so.14.0[.0]
* 1.4.0 14 10400 14.so.14.0[.0]
* 1.4.1beta01-03 14 10401 14.so.14.1[.0]
* 1.4.1rc01 14 10401 14.so.14.1[.0]
* 1.4.1beta04-12 14 10401 14.so.14.1[.0]
* 1.4.1 14 10401 14.so.14.1[.0]
* 1.4.2 14 10402 14.so.14.2[.0]
* 1.4.3 14 10403 14.so.14.3[.0]
* 1.4.4 14 10404 14.so.14.4[.0]
* 1.5.0beta01-58 15 10500 15.so.15.0[.0]
* 1.5.0rc01-07 15 10500 15.so.15.0[.0]
* 1.5.0 15 10500 15.so.15.0[.0]
* 1.5.1beta01-11 15 10501 15.so.15.1[.0]
* 1.5.1rc01-02 15 10501 15.so.15.1[.0]
* 1.5.1 15 10501 15.so.15.1[.0]
* 1.5.2beta01-03 15 10502 15.so.15.2[.0]
* 1.5.2rc01-03 15 10502 15.so.15.2[.0]
* 1.5.2 15 10502 15.so.15.2[.0]
* 1.5.3beta01-10 15 10503 15.so.15.3[.0]
* 1.5.3rc01-02 15 10503 15.so.15.3[.0]
* 1.5.3beta11 15 10503 15.so.15.3[.0]
* 1.5.3 [omitted]
* 1.5.4beta01-08 15 10504 15.so.15.4[.0]
* 1.5.4rc01 15 10504 15.so.15.4[.0]
* 1.5.4 15 10504 15.so.15.4[.0]
* 1.5.5beta01-08 15 10505 15.so.15.5[.0]
* 1.5.5rc01 15 10505 15.so.15.5[.0]
* 1.5.5 15 10505 15.so.15.5[.0]
* 1.5.6beta01-07 15 10506 15.so.15.6[.0]
* 1.5.6rc01-03 15 10506 15.so.15.6[.0]
* 1.5.6 15 10506 15.so.15.6[.0]
* 1.5.7beta01-05 15 10507 15.so.15.7[.0]
* 1.5.7rc01-03 15 10507 15.so.15.7[.0]
* 1.5.7 15 10507 15.so.15.7[.0]
* 1.6.0beta01-40 16 10600 16.so.16.0[.0]
* 1.6.0rc01-08 16 10600 16.so.16.0[.0]
* 1.6.0 16 10600 16.so.16.0[.0]
* 1.6.1beta01-09 16 10601 16.so.16.1[.0]
* 1.6.1rc01 16 10601 16.so.16.1[.0]
* 1.6.1 16 10601 16.so.16.1[.0]
* 1.6.2beta01 16 10602 16.so.16.2[.0]
* 1.6.2rc01-06 16 10602 16.so.16.2[.0]
* 1.6.2 16 10602 16.so.16.2[.0]
* 1.6.3beta01-11 16 10603 16.so.16.3[.0]
* 1.6.3rc01 16 10603 16.so.16.3[.0]
* 1.6.3 16 10603 16.so.16.3[.0]
* 1.6.4beta01-02 16 10604 16.so.16.4[.0]
* 1.6.4rc01 16 10604 16.so.16.4[.0]
* 1.6.4 16 10604 16.so.16.4[.0]
* 1.6.5 16 10605 16.so.16.5[.0]
* 1.6.6 16 10606 16.so.16.6[.0]
* 1.6.7beta01-04 16 10607 16.so.16.7[.0]
* 1.6.7rc01-03 16 10607 16.so.16.7[.0]
* 1.6.7 16 10607 16.so.16.7[.0]
* 1.6.8beta01-02 16 10608 16.so.16.8[.0]
* 1.6.8rc01-02 16 10608 16.so.16.8[.0]
* 1.6.8 16 10608 16.so.16.8[.0]
* 1.6.9beta01-04 16 10609 16.so.16.9[.0]
* 1.6.9rc01-02 16 10609 16.so.16.9[.0]
* 1.6.9 16 10609 16.so.16.9[.0]
* 1.6.10beta01-03 16 10610 16.so.16.10[.0]
* 1.6.10rc01-03 16 10610 16.so.16.10[.0]
* 1.6.10 16 10610 16.so.16.10[.0]
* 1.6.11beta01-06 16 10611 16.so.16.11[.0]
* 1.6.11rc01-02 16 10611 16.so.16.11[.0]
* 1.6.11 16 10611 16.so.16.11[.0]
* 1.6.12rc01-03 16 10612 16.so.16.12[.0]
* 1.6.12 16 10612 16.so.16.12[.0]
* 1.6.13beta01-04 16 10613 16.so.16.13[.0]
* 1.6.13rc01-02 16 10613 16.so.16.13[.0]
* 1.6.13 16 10613 16.so.16.13[.0]
* 1.6.14beta01-07 16 10614 16.so.16.14[.0]
* 1.6.14rc01-02 16 10614 16.so.16.14[.0]
* 1.6.14 16 10614 16.so.16.14[.0]
* 1.6.15beta01-08 16 10615 16.so.16.15[.0]
* 1.6.15rc01-03 16 10615 16.so.16.15[.0]
* 1.6.15 16 10615 16.so.16.15[.0]
* 1.6.16beta01-03 16 10616 16.so.16.16[.0]
* 1.6.16rc01-02 16 10616 16.so.16.16[.0]
* 1.6.16 16 10616 16.so.16.16[.0]
* 1.6.17beta01-06 16 10617 16.so.16.17[.0]
* 1.6.17rc01-06 16 10617 16.so.16.17[.0]
* 1.6.17 16 10617 16.so.16.17[.0]
* 1.6.18beta01-09 16 10618 16.so.16.18[.0]
* 1.6.18rc01-03 16 10618 16.so.16.18[.0]
* 1.6.18 16 10618 16.so.16.18[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
* used for changes in backward compatibility, as it is intended. The
* PNG_LIBPNG_VER macro, which is not used within libpng but is available
* for applications, is an unsigned integer of the form xyyzz corresponding
* to the source version x.y.z (leading zeros in y and z). Beta versions
* were given the previous public release number plus a letter, until
* version 1.0.6j; from then on they were given the upcoming public
* release number plus "betaNN" or "rcNN".
*
* Binary incompatibility exists only when applications make direct access
* to the info_ptr or png_ptr members through png.h, and the compiled
* application is loaded with a different version of the library.
*
* DLLNUM will change each time there are forward or backward changes
* in binary compatibility (e.g., when a new feature is added).
*
* See libpng-manual.txt or libpng.3 for more information. The PNG
* specification is available as a W3C Recommendation and as an ISO
* Specification, <http://www.w3.org/TR/2003/REC-PNG-20031110/
*/ */
/* /*
@ -250,12 +25,14 @@
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* *
* libpng versions 1.0.7, July 1, 2000, through 1.6.18, July 23, 2015, are * libpng versions 1.0.7, July 1, 2000, through 1.6.20, December 3, 2015, are
* Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are * Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, are
* distributed according to the same disclaimer and license as libpng-1.0.6 * derived from libpng-1.0.6, and are distributed according to the same
* with the following individuals added to the list of Contributing Authors: * disclaimer and license as libpng-1.0.6 with the following individuals
* added to the list of Contributing Authors:
* *
* Simon-Pierre Cadieux * Simon-Pierre Cadieux
* Eric S. Raymond
* Mans Rullgard * Mans Rullgard
* Cosmin Truta * Cosmin Truta
* Gilles Vollant * Gilles Vollant
@ -271,19 +48,20 @@
* the user. * the user.
* *
* libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
* Copyright (c) 1998-2000 Glenn Randers-Pehrson, and are distributed according * Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
* to the same disclaimer and license as libpng-0.96, with the following * libpng-0.96, and are distributed according to the same disclaimer and
* individuals added to the list of Contributing Authors: * license as libpng-0.96, with the following individuals added to the list
* of Contributing Authors:
* *
* Tom Lane * Tom Lane
* Glenn Randers-Pehrson * Glenn Randers-Pehrson
* Eric S. Raymond
* Willem van Schaik * Willem van Schaik
* *
* libpng versions 0.89, June 1996, through 0.96, May 1997, are * libpng versions 0.89, June 1996, through 0.96, May 1997, are
* Copyright (c) 1996-1997 Andreas Dilger, and are * Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
* distributed according to the same disclaimer and license as libpng-0.88, * and are distributed according to the same disclaimer and license as
* with the following individuals added to the list of Contributing Authors: * libpng-0.88, with the following individuals added to the list of
* Contributing Authors:
* *
* John Bowler * John Bowler
* Kevin Bracey * Kevin Bracey
@ -329,6 +107,8 @@
* supporting the PNG file format in commercial products. If you use this * supporting the PNG file format in commercial products. If you use this
* source code in a product, acknowledgment is not required but would be * source code in a product, acknowledgment is not required but would be
* appreciated. * appreciated.
*
* END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
*/ */
/* /*
@ -355,17 +135,92 @@
* Thanks to Frank J. T. Wojcik for helping with the documentation. * Thanks to Frank J. T. Wojcik for helping with the documentation.
*/ */
/* Note about libpng version numbers:
*
* Due to various miscommunications, unforeseen code incompatibilities
* and occasional factors outside the authors' control, version numbering
* on the library has not always been consistent and straightforward.
* The following table summarizes matters since version 0.89c, which was
* the first widely used release:
*
* source png.h png.h shared-lib
* version string int version
* ------- ------ ----- ----------
* 0.89c "1.0 beta 3" 0.89 89 1.0.89
* 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
* 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
* 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
* 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
* 0.97c 0.97 97 2.0.97
* 0.98 0.98 98 2.0.98
* 0.99 0.99 98 2.0.99
* 0.99a-m 0.99 99 2.0.99
* 1.00 1.00 100 2.1.0 [100 should be 10000]
* 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
* 1.0.1 png.h string is 10001 2.1.0
* 1.0.1a-e identical to the 10002 from here on, the shared library
* 1.0.2 source version) 10002 is 2.V where V is the source code
* 1.0.2a-b 10003 version, except as noted.
* 1.0.3 10003
* 1.0.3a-d 10004
* 1.0.4 10004
* 1.0.4a-f 10005
* 1.0.5 (+ 2 patches) 10005
* 1.0.5a-d 10006
* 1.0.5e-r 10100 (not source compatible)
* 1.0.5s-v 10006 (not binary compatible)
* 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
* 1.0.6d-f 10007 (still binary incompatible)
* 1.0.6g 10007
* 1.0.6h 10007 10.6h (testing xy.z so-numbering)
* 1.0.6i 10007 10.6i
* 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
* 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible)
* 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible)
* 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
* 1.0.7 1 10007 (still compatible)
* ...
* 1.0.19 10 10019 10.so.0.19[.0]
* ...
* 1.2.53 13 10253 12.so.0.53[.0]
* ...
* 1.5.23 15 10523 15.so.15.23[.0]
* ...
* 1.6.20 16 10620 16.so.16.20[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
* used for changes in backward compatibility, as it is intended. The
* PNG_LIBPNG_VER macro, which is not used within libpng but is available
* for applications, is an unsigned integer of the form xyyzz corresponding
* to the source version x.y.z (leading zeros in y and z). Beta versions
* were given the previous public release number plus a letter, until
* version 1.0.6j; from then on they were given the upcoming public
* release number plus "betaNN" or "rcNN".
*
* Binary incompatibility exists only when applications make direct access
* to the info_ptr or png_ptr members through png.h, and the compiled
* application is loaded with a different version of the library.
*
* DLLNUM will change each time there are forward or backward changes
* in binary compatibility (e.g., when a new feature is added).
*
* See libpng.txt or libpng.3 for more information. The PNG specification
* is available as a W3C Recommendation and as an ISO Specification,
* <http://www.w3.org/TR/2003/REC-PNG-20031110/
*/
/* /*
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* July 23, 2015 * December 3, 2015
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.6.18 are Y2K compliant. It is my belief that * upward through 1.6.20 are Y2K compliant. It is my belief that
* earlier versions were also Y2K compliant. * earlier versions were also Y2K compliant.
* *
* Libpng only has two year fields. One is a 2-byte unsigned integer * Libpng only has two year fields. One is a 2-byte unsigned integer
@ -427,9 +282,9 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.18" #define PNG_LIBPNG_VER_STRING "1.6.20"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.18 - July 23, 2015\n" " libpng version 1.6.20 - December 3, 2015\n"
#define PNG_LIBPNG_VER_SONUM 16 #define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16 #define PNG_LIBPNG_VER_DLLNUM 16
@ -437,7 +292,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1 #define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6 #define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 18 #define PNG_LIBPNG_VER_RELEASE 20
/* This should match the numeric part of the final component of /* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: * PNG_LIBPNG_VER_STRING, omitting any leading zero:
@ -468,7 +323,7 @@
* version 1.0.0 was mis-numbered 100 instead of 10000). From * version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/ */
#define PNG_LIBPNG_VER 10618 /* 1.6.18 */ #define PNG_LIBPNG_VER 10620 /* 1.6.20 */
/* Library configuration: these options cannot be changed after /* Library configuration: these options cannot be changed after
* the library has been built. * the library has been built.
@ -525,17 +380,22 @@ extern "C" {
/* This file is arranged in several sections: /* This file is arranged in several sections:
* *
* 1. Any configuration options that can be specified by for the application * 1. [omitted]
* 2. Any configuration options that can be specified by for the application
* code when it is built. (Build time configuration is in pnglibconf.h) * code when it is built. (Build time configuration is in pnglibconf.h)
* 2. Type definitions (base types are defined in pngconf.h), structure * 3. Type definitions (base types are defined in pngconf.h), structure
* definitions. * definitions.
* 3. Exported library functions. * 4. Exported library functions.
* 4. Simplified API. * 5. Simplified API.
* 6. Implementation options.
* *
* The library source code has additional files (principally pngpriv.h) that * The library source code has additional files (principally pngpriv.h) that
* allow configuration of the library. * allow configuration of the library.
*/ */
/* Section 1: run time configuration
/* Section 1: [omitted] */
/* Section 2: run time configuration
* See pnglibconf.h for build time configuration * See pnglibconf.h for build time configuration
* *
* Run time configuration allows the application to choose between * Run time configuration allows the application to choose between
@ -565,7 +425,7 @@ extern "C" {
* Otherwise the calls are mapped to png_error. * Otherwise the calls are mapped to png_error.
*/ */
/* Section 2: type definitions, including structures and compile time /* Section 3: type definitions, including structures and compile time
* constants. * constants.
* See pngconf.h for base types that vary by machine/system * See pngconf.h for base types that vary by machine/system
*/ */
@ -573,7 +433,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef char* png_libpng_version_1_6_18; typedef char* png_libpng_version_1_6_20;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info. /* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
* *
@ -889,7 +749,9 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */ #define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */ #define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */ #define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
#if INT_MAX >= 0x8000 /* else this might break */
#define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */ #define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */
#endif
/* This is used for the transformation routines, as some of them /* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using * change these values for the row. It also should enable using
@ -993,7 +855,9 @@ PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */ #define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
/* Added to libpng-1.5.4 */ /* Added to libpng-1.5.4 */
#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */ #define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
#if INT_MAX >= 0x8000 /* else this might break */
#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */ #define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
#endif
/* Flags for MNG supported features */ /* Flags for MNG supported features */
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01 #define PNG_FLAG_MNG_EMPTY_PLTE 0x01
@ -1010,7 +874,7 @@ typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp,
png_alloc_size_t)); png_alloc_size_t));
typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp)); typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp));
/* Section 3: exported functions /* Section 4: exported functions
* Here are the function definitions most commonly used. This is not * Here are the function definitions most commonly used. This is not
* the place to find out how to use libpng. See libpng-manual.txt for the * the place to find out how to use libpng. See libpng-manual.txt for the
* full explanation, see example.c for the summary. This just provides * full explanation, see example.c for the summary. This just provides
@ -1383,13 +1247,13 @@ PNG_EXPORT(38, void, png_set_invert_alpha, (png_structrp png_ptr));
#endif #endif
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */ /* Add a filler byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */
PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler, PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler,
int flags)); int flags));
/* The values of the PNG_FILLER_ defines should NOT be changed */ /* The values of the PNG_FILLER_ defines should NOT be changed */
# define PNG_FILLER_BEFORE 0 # define PNG_FILLER_BEFORE 0
# define PNG_FILLER_AFTER 1 # define PNG_FILLER_AFTER 1
/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */ /* Add an alpha byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */
PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr, PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr,
png_uint_32 filler, int flags)); png_uint_32 filler, int flags));
#endif /* READ_FILLER || WRITE_FILLER */ #endif /* READ_FILLER || WRITE_FILLER */
@ -2714,7 +2578,7 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
# define PNG_get_int_32(buf) \ # define PNG_get_int_32(buf) \
((png_int_32)((*(buf) & 0x80) \ ((png_int_32)((*(buf) & 0x80) \
? -((png_int_32)((png_get_uint_32(buf) ^ 0xffffffffL) + 1)) \ ? -((png_int_32)(((png_get_uint_32(buf)^0xffffffffU)+1U)&0x7fffffffU)) \
: (png_int_32)png_get_uint_32(buf))) : (png_int_32)png_get_uint_32(buf)))
/* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h, /* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h,
@ -2734,10 +2598,17 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
# endif # endif
#endif #endif
#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) || \ #ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) PNG_EXPORT(242, void, png_set_check_for_invalid_index,
(png_structrp png_ptr, int allowed));
# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr,
png_const_infop info_ptr));
# endif
#endif /* CHECK_FOR_INVALID_INDEX */
/******************************************************************************* /*******************************************************************************
* SIMPLIFIED API * Section 5: SIMPLIFIED API
******************************************************************************* *******************************************************************************
* *
* Please read the documentation in libpng-manual.txt (TODO: write said * Please read the documentation in libpng-manual.txt (TODO: write said
@ -2782,6 +2653,9 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
* when it is being read or defines the in-memory format of an image that you * when it is being read or defines the in-memory format of an image that you
* need to write: * need to write:
*/ */
#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) || \
defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
#define PNG_IMAGE_VERSION 1 #define PNG_IMAGE_VERSION 1
typedef struct png_control *png_controlp; typedef struct png_control *png_controlp;
@ -2881,7 +2755,7 @@ typedef struct
* called to read or write the color-map and set the format correctly for the * called to read or write the color-map and set the format correctly for the
* image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly! * image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly!
* *
* NOTE: libpng can be built with particular features disabled, if you see * NOTE: libpng can be built with particular features disabled. If you see
* compiler errors because the definition of one of the following flags has been * compiler errors because the definition of one of the following flags has been
* compiled out it is because libpng does not have the required support. It is * compiled out it is because libpng does not have the required support. It is
* possible, however, for the libpng configuration to enable the format on just * possible, however, for the libpng configuration to enable the format on just
@ -2893,7 +2767,7 @@ typedef struct
*/ */
#define PNG_FORMAT_FLAG_ALPHA 0x01U /* format with an alpha channel */ #define PNG_FORMAT_FLAG_ALPHA 0x01U /* format with an alpha channel */
#define PNG_FORMAT_FLAG_COLOR 0x02U /* color format: otherwise grayscale */ #define PNG_FORMAT_FLAG_COLOR 0x02U /* color format: otherwise grayscale */
#define PNG_FORMAT_FLAG_LINEAR 0x04U /* 2 byte channels else 1 byte */ #define PNG_FORMAT_FLAG_LINEAR 0x04U /* 2-byte channels else 1-byte */
#define PNG_FORMAT_FLAG_COLORMAP 0x08U /* image data is color-mapped */ #define PNG_FORMAT_FLAG_COLORMAP 0x08U /* image data is color-mapped */
#ifdef PNG_FORMAT_BGR_SUPPORTED #ifdef PNG_FORMAT_BGR_SUPPORTED
@ -3193,17 +3067,8 @@ PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
******************************************************************************/ ******************************************************************************/
#endif /* SIMPLIFIED_{READ|WRITE} */ #endif /* SIMPLIFIED_{READ|WRITE} */
#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
PNG_EXPORT(242, void, png_set_check_for_invalid_index,
(png_structrp png_ptr, int allowed));
# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr,
png_const_infop info_ptr));
# endif
#endif /* CHECK_FOR_INVALID_INDEX */
/******************************************************************************* /*******************************************************************************
* IMPLEMENTATION OPTIONS * Section 6: IMPLEMENTATION OPTIONS
******************************************************************************* *******************************************************************************
* *
* Support for arbitrary implementation-specific optimizations. The API allows * Support for arbitrary implementation-specific optimizations. The API allows

14
GRRLIB/lib/png/pngconf.h
View file

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.6.18, July 23, 2015 * libpng version 1.6.20, December 3, 2015
* *
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -63,7 +63,7 @@
*/ */
#define PNG_CONST const /* backward compatibility only */ #define PNG_CONST const /* backward compatibility only */
/* This controls optimization of the reading of 16 and 32 bit values /* This controls optimization of the reading of 16-bit and 32-bit values
* from PNG files. It can be set on a per-app-file basis - it * from PNG files. It can be set on a per-app-file basis - it
* just changes whether a macro is used when the function is called. * just changes whether a macro is used when the function is called.
* The library builder sets the default; if read functions are not * The library builder sets the default; if read functions are not
@ -480,7 +480,7 @@
#if CHAR_BIT == 8 && UCHAR_MAX == 255 #if CHAR_BIT == 8 && UCHAR_MAX == 255
typedef unsigned char png_byte; typedef unsigned char png_byte;
#else #else
# error "libpng requires 8 bit bytes" # error "libpng requires 8-bit bytes"
#endif #endif
#if INT_MIN == -32768 && INT_MAX == 32767 #if INT_MIN == -32768 && INT_MAX == 32767
@ -488,7 +488,7 @@
#elif SHRT_MIN == -32768 && SHRT_MAX == 32767 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767
typedef short png_int_16; typedef short png_int_16;
#else #else
# error "libpng requires a signed 16 bit type" # error "libpng requires a signed 16-bit type"
#endif #endif
#if UINT_MAX == 65535 #if UINT_MAX == 65535
@ -496,7 +496,7 @@
#elif USHRT_MAX == 65535 #elif USHRT_MAX == 65535
typedef unsigned short png_uint_16; typedef unsigned short png_uint_16;
#else #else
# error "libpng requires an unsigned 16 bit type" # error "libpng requires an unsigned 16-bit type"
#endif #endif
#if INT_MIN < -2147483646 && INT_MAX > 2147483646 #if INT_MIN < -2147483646 && INT_MAX > 2147483646
@ -504,7 +504,7 @@
#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
typedef long int png_int_32; typedef long int png_int_32;
#else #else
# error "libpng requires a signed 32 bit (or more) type" # error "libpng requires a signed 32-bit (or more) type"
#endif #endif
#if UINT_MAX > 4294967294 #if UINT_MAX > 4294967294
@ -512,7 +512,7 @@
#elif ULONG_MAX > 4294967294 #elif ULONG_MAX > 4294967294
typedef unsigned long int png_uint_32; typedef unsigned long int png_uint_32;
#else #else
# error "libpng requires an unsigned 32 bit (or more) type" # error "libpng requires an unsigned 32-bit (or more) type"
#endif #endif
/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however, /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,

2
GRRLIB/lib/png/pngerror.c
View file

@ -768,7 +768,7 @@ png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN)
/* If control reaches this point, png_longjmp() must not return. The only /* If control reaches this point, png_longjmp() must not return. The only
* choice is to terminate the whole process (or maybe the thread); to do * choice is to terminate the whole process (or maybe the thread); to do
* this the ANSI-C abort() function is used unless a different method is * this the ANSI-C abort() function is used unless a different method is
* implemented by overriding the default configuration setting for * implemented by overriding the default configuration setting for
* PNG_ABORT(). * PNG_ABORT().
*/ */

2
GRRLIB/lib/png/pnginfo.h
View file

@ -223,7 +223,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
/* Storage for unknown chunks that the library doesn't recognize. */ /* Storage for unknown chunks that the library doesn't recognize. */
png_unknown_chunkp unknown_chunks; png_unknown_chunkp unknown_chunks;
/* The type of this field is limited by the type of /* The type of this field is limited by the type of
* png_struct::user_chunk_cache_max, else overflow can occur. * png_struct::user_chunk_cache_max, else overflow can occur.
*/ */
int unknown_chunks_num; int unknown_chunks_num;

6
GRRLIB/lib/png/pngpread.c
View file

@ -133,7 +133,7 @@ png_process_some_data(png_structrp png_ptr, png_inforp info_ptr)
void /* PRIVATE */ void /* PRIVATE */
png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr) png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
{ {
png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */ png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */
num_to_check = 8 - num_checked; num_to_check = 8 - num_checked;
if (png_ptr->buffer_size < num_to_check) if (png_ptr->buffer_size < num_to_check)
@ -563,7 +563,7 @@ png_push_read_IDAT(png_structrp png_ptr)
* are of different types and we don't know which variable has the fewest * are of different types and we don't know which variable has the fewest
* bits. Carefully select the smaller and cast it to the type of the * bits. Carefully select the smaller and cast it to the type of the
* larger - this cannot overflow. Do not cast in the following test - it * larger - this cannot overflow. Do not cast in the following test - it
* will break on either 16 or 64 bit platforms. * will break on either 16-bit or 64-bit platforms.
*/ */
if (idat_size < save_size) if (idat_size < save_size)
save_size = (png_size_t)idat_size; save_size = (png_size_t)idat_size;
@ -662,7 +662,7 @@ png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
* change the current behavior (see comments in inflate.c * change the current behavior (see comments in inflate.c
* for why this doesn't happen at present with zlib 1.2.5). * for why this doesn't happen at present with zlib 1.2.5).
*/ */
ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH); ret = PNG_INFLATE(png_ptr, Z_SYNC_FLUSH);
/* Check for any failure before proceeding. */ /* Check for any failure before proceeding. */
if (ret != Z_OK && ret != Z_STREAM_END) if (ret != Z_OK && ret != Z_STREAM_END)

16
GRRLIB/lib/png/pngpriv.h
View file

@ -575,10 +575,6 @@
#define PNG_STRUCT_PNG 0x0001 #define PNG_STRUCT_PNG 0x0001
#define PNG_STRUCT_INFO 0x0002 #define PNG_STRUCT_INFO 0x0002
/* Scaling factor for filter heuristic weighting calculations */
#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
/* Flags for the png_ptr->flags rather than declaring a byte for each one */ /* Flags for the png_ptr->flags rather than declaring a byte for each one */
#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 #define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */ #define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */
@ -669,7 +665,7 @@
/* The fixed point conversion performs range checking and evaluates /* The fixed point conversion performs range checking and evaluates
* its argument multiple times, so must be used with care. The * its argument multiple times, so must be used with care. The
* range checking uses the PNG specification values for a signed * range checking uses the PNG specification values for a signed
* 32 bit fixed point value except that the values are deliberately * 32-bit fixed point value except that the values are deliberately
* rounded-to-zero to an integral value - 21474 (21474.83 is roughly * rounded-to-zero to an integral value - 21474 (21474.83 is roughly
* (2^31-1) * 100000). 's' is a string that describes the value being * (2^31-1) * 100000). 's' is a string that describes the value being
* converted. * converted.
@ -816,7 +812,7 @@
*/ */
#endif #endif
/* This is used for 16 bit gamma tables -- only the top level pointers are /* This is used for 16-bit gamma tables -- only the top level pointers are
* const; this could be changed: * const; this could be changed:
*/ */
typedef const png_uint_16p * png_const_uint_16pp; typedef const png_uint_16p * png_const_uint_16pp;
@ -1219,6 +1215,14 @@ PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
/* Initialize the row buffers, etc. */ /* Initialize the row buffers, etc. */
PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY); PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
#if PNG_ZLIB_VERNUM >= 0x1240
PNG_INTERNAL_FUNCTION(int,png_zlib_inflate,(png_structrp png_ptr, int flush),
PNG_EMPTY);
# define PNG_INFLATE(pp, flush) png_zlib_inflate(pp, flush)
#else /* Zlib < 1.2.4 */
# define PNG_INFLATE(pp, flush) inflate(&(pp)->zstream, flush)
#endif /* Zlib < 1.2.4 */
#ifdef PNG_READ_TRANSFORMS_SUPPORTED #ifdef PNG_READ_TRANSFORMS_SUPPORTED
/* Optional call to update the users info structure */ /* Optional call to update the users info structure */
PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr, PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr,

22
GRRLIB/lib/png/pngread.c
View file

@ -1683,10 +1683,11 @@ decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding)
value *= 257; value *= 257;
break; break;
#ifdef __GNUC__
default: default:
png_error(display->image->opaque->png_ptr, png_error(display->image->opaque->png_ptr,
"unexpected encoding (internal error)"); "unexpected encoding (internal error)");
break; #endif
} }
return value; return value;
@ -2837,7 +2838,6 @@ png_image_read_colormap(png_voidp argument)
default: default:
png_error(png_ptr, "invalid PNG color type"); png_error(png_ptr, "invalid PNG color type");
/*NOT REACHED*/ /*NOT REACHED*/
break;
} }
/* Now deal with the output processing */ /* Now deal with the output processing */
@ -2847,10 +2847,6 @@ png_image_read_colormap(png_voidp argument)
switch (data_encoding) switch (data_encoding)
{ {
default:
png_error(png_ptr, "bad data option (internal error)");
break;
case P_sRGB: case P_sRGB:
/* Change to 8-bit sRGB */ /* Change to 8-bit sRGB */
png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB); png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB);
@ -2860,6 +2856,11 @@ png_image_read_colormap(png_voidp argument)
if (png_ptr->bit_depth > 8) if (png_ptr->bit_depth > 8)
png_set_scale_16(png_ptr); png_set_scale_16(png_ptr);
break; break;
#ifdef __GNUC__
default:
png_error(png_ptr, "bad data option (internal error)");
#endif
} }
if (cmap_entries > 256 || cmap_entries > image->colormap_entries) if (cmap_entries > 256 || cmap_entries > image->colormap_entries)
@ -3410,10 +3411,6 @@ png_image_read_background(png_voidp argument)
*/ */
switch (info_ptr->bit_depth) switch (info_ptr->bit_depth)
{ {
default:
png_error(png_ptr, "unexpected bit depth");
break;
case 8: case 8:
/* 8-bit sRGB gray values with an alpha channel; the alpha channel is /* 8-bit sRGB gray values with an alpha channel; the alpha channel is
* to be removed by composing on a background: either the row if * to be removed by composing on a background: either the row if
@ -3631,6 +3628,11 @@ png_image_read_background(png_voidp argument)
} }
} }
break; break;
#ifdef __GNUC__
default:
png_error(png_ptr, "unexpected bit depth");
#endif
} }
return 1; return 1;

2
GRRLIB/lib/png/pngrio.c
View file

@ -26,7 +26,7 @@
* reads from a file pointer. Note that this routine sometimes gets called * reads from a file pointer. Note that this routine sometimes gets called
* with very small lengths, so you should implement some kind of simple * with very small lengths, so you should implement some kind of simple
* buffering if you are using unbuffered reads. This should never be asked * buffering if you are using unbuffered reads. This should never be asked
* to read more than 64K on a 16 bit machine. * to read more than 64K on a 16-bit machine.
*/ */
void /* PRIVATE */ void /* PRIVATE */
png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length) png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)

25
GRRLIB/lib/png/pngrtran.c
View file

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers /* pngrtran.c - transforms the data in a row for PNG readers
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -976,7 +976,6 @@ png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
default: default:
png_error(png_ptr, "invalid error action to rgb_to_gray"); png_error(png_ptr, "invalid error action to rgb_to_gray");
break;
} }
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@ -1997,7 +1996,7 @@ png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr)
# endif # endif
# else # else
/* No 16 bit support: force chopping 16-bit input down to 8, in this case /* No 16-bit support: force chopping 16-bit input down to 8, in this case
* the app program can chose if both APIs are available by setting the * the app program can chose if both APIs are available by setting the
* correct scaling to use. * correct scaling to use.
*/ */
@ -2098,10 +2097,10 @@ png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr)
defined(PNG_READ_USER_TRANSFORM_SUPPORTED) defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0)
{ {
if (info_ptr->bit_depth < png_ptr->user_transform_depth) if (png_ptr->user_transform_depth != 0)
info_ptr->bit_depth = png_ptr->user_transform_depth; info_ptr->bit_depth = png_ptr->user_transform_depth;
if (info_ptr->channels < png_ptr->user_transform_channels) if (png_ptr->user_transform_channels != 0)
info_ptr->channels = png_ptr->user_transform_channels; info_ptr->channels = png_ptr->user_transform_channels;
} }
#endif #endif
@ -2382,8 +2381,8 @@ png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
while (sp < ep) while (sp < ep)
{ {
/* The input is an array of 16 bit components, these must be scaled to /* The input is an array of 16-bit components, these must be scaled to
* 8 bits each. For a 16 bit value V the required value (from the PNG * 8 bits each. For a 16-bit value V the required value (from the PNG
* specification) is: * specification) is:
* *
* (V * 255) / 65535 * (V * 255) / 65535
@ -2404,7 +2403,7 @@ png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
* *
* The approximate differs from the exact answer only when (vlo-vhi) is * The approximate differs from the exact answer only when (vlo-vhi) is
* 128; it then gives a correction of +1 when the exact correction is * 128; it then gives a correction of +1 when the exact correction is
* 0. This gives 128 errors. The exact answer (correct for all 16 bit * 0. This gives 128 errors. The exact answer (correct for all 16-bit
* input values) is: * input values) is:
* *
* error = (vlo-vhi+128)*65535 >> 24; * error = (vlo-vhi+128)*65535 >> 24;
@ -3148,9 +3147,9 @@ png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row)
if (red != green || red != blue) if (red != green || red != blue)
rgb_error |= 1; rgb_error |= 1;
/* From 1.5.5 in the 16 bit case do the accurate conversion even /* From 1.5.5 in the 16-bit case do the accurate conversion even
* in the 'fast' case - this is because this is where the code * in the 'fast' case - this is because this is where the code
* ends up when handling linear 16 bit data. * ends up when handling linear 16-bit data.
*/ */
gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >> gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >>
15); 15);
@ -3315,7 +3314,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
if ((png_uint_16)((*sp >> shift) & 0x0f) if ((png_uint_16)((*sp >> shift) & 0x0f)
== png_ptr->trans_color.gray) == png_ptr->trans_color.gray)
{ {
unsigned int tmp = *sp & (0xf0f >> (4 - shift)); unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
tmp |= png_ptr->background.gray << shift; tmp |= png_ptr->background.gray << shift;
*sp = (png_byte)(tmp & 0xff); *sp = (png_byte)(tmp & 0xff);
} }
@ -3325,7 +3324,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
unsigned int p = (*sp >> shift) & 0x0f; unsigned int p = (*sp >> shift) & 0x0f;
unsigned int g = (gamma_table[p | (p << 4)] >> 4) & unsigned int g = (gamma_table[p | (p << 4)] >> 4) &
0x0f; 0x0f;
unsigned int tmp = *sp & (0xf0f >> (4 - shift)); unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
tmp |= g << shift; tmp |= g << shift;
*sp = (png_byte)(tmp & 0xff); *sp = (png_byte)(tmp & 0xff);
} }
@ -3351,7 +3350,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
if ((png_uint_16)((*sp >> shift) & 0x0f) if ((png_uint_16)((*sp >> shift) & 0x0f)
== png_ptr->trans_color.gray) == png_ptr->trans_color.gray)
{ {
unsigned int tmp = *sp & (0xf0f >> (4 - shift)); unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
tmp |= png_ptr->background.gray << shift; tmp |= png_ptr->background.gray << shift;
*sp = (png_byte)(tmp & 0xff); *sp = (png_byte)(tmp & 0xff);
} }

75
GRRLIB/lib/png/pngrutil.c
View file

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.20 [December 3, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -89,7 +89,13 @@ png_get_int_32)(png_const_bytep buf)
return uval; return uval;
uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */ uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
return -(png_int_32)uval; if ((uval & 0x80000000) == 0) /* no overflow */
return -(png_int_32)uval;
/* The following has to be safe; this function only gets called on PNG data
* and if we get here that data is invalid. 0 is the most safe value and
* if not then an attacker would surely just generate a PNG with 0 instead.
*/
return 0;
} }
/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */ /* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
@ -98,7 +104,7 @@ png_get_uint_16)(png_const_bytep buf)
{ {
/* ANSI-C requires an int value to accomodate at least 16 bits so this /* ANSI-C requires an int value to accomodate at least 16 bits so this
* works and allows the compiler not to worry about possible narrowing * works and allows the compiler not to worry about possible narrowing
* on 32 bit systems. (Pre-ANSI systems did not make integers smaller * on 32-bit systems. (Pre-ANSI systems did not make integers smaller
* than 16 bits either.) * than 16 bits either.)
*/ */
unsigned int val = unsigned int val =
@ -371,10 +377,16 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) == if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) ==
PNG_OPTION_ON) PNG_OPTION_ON)
{
window_bits = 15; window_bits = 15;
png_ptr->zstream_start = 0; /* fixed window size */
}
else else
{
window_bits = 0; window_bits = 0;
png_ptr->zstream_start = 1;
}
# else # else
# define window_bits 0 # define window_bits 0
# endif # endif
@ -423,6 +435,31 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
#endif #endif
} }
#if PNG_ZLIB_VERNUM >= 0x1240
/* Handle the start of the inflate stream if we called inflateInit2(strm,0);
* in this case some zlib versions skip validation of the CINFO field and, in
* certain circumstances, libpng may end up displaying an invalid image, in
* contrast to implementations that call zlib in the normal way (e.g. libpng
* 1.5).
*/
int /* PRIVATE */
png_zlib_inflate(png_structrp png_ptr, int flush)
{
if (png_ptr->zstream_start && png_ptr->zstream.avail_in > 0)
{
if ((*png_ptr->zstream.next_in >> 4) > 7)
{
png_ptr->zstream.msg = "invalid window size (libpng)";
return Z_DATA_ERROR;
}
png_ptr->zstream_start = 0;
}
return inflate(&png_ptr->zstream, flush);
}
#endif /* Zlib >= 1.2.4 */
#ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED #ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED
/* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to /* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to
* allow the caller to do multiple calls if required. If the 'finish' flag is * allow the caller to do multiple calls if required. If the 'finish' flag is
@ -516,7 +553,7 @@ png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish,
* the previous chunk of input data. Tell zlib if we have reached the * the previous chunk of input data. Tell zlib if we have reached the
* end of the output buffer. * end of the output buffer.
*/ */
ret = inflate(&png_ptr->zstream, avail_out > 0 ? Z_NO_FLUSH : ret = PNG_INFLATE(png_ptr, avail_out > 0 ? Z_NO_FLUSH :
(finish ? Z_FINISH : Z_SYNC_FLUSH)); (finish ? Z_FINISH : Z_SYNC_FLUSH));
} while (ret == Z_OK); } while (ret == Z_OK);
@ -765,7 +802,7 @@ png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
* the available output is produced; this allows reading of truncated * the available output is produced; this allows reading of truncated
* streams. * streams.
*/ */
ret = inflate(&png_ptr->zstream, ret = PNG_INFLATE(png_ptr,
*chunk_bytes > 0 ? Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH)); *chunk_bytes > 0 ? Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH));
} }
while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0)); while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0));
@ -866,7 +903,7 @@ void /* PRIVATE */
png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{ {
png_color palette[PNG_MAX_PALETTE_LENGTH]; png_color palette[PNG_MAX_PALETTE_LENGTH];
int num, i; int max_palette_length, num, i;
#ifdef PNG_POINTER_INDEXING_SUPPORTED #ifdef PNG_POINTER_INDEXING_SUPPORTED
png_colorp pal_ptr; png_colorp pal_ptr;
#endif #endif
@ -927,6 +964,19 @@ png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
/* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */ /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
num = (int)length / 3; num = (int)length / 3;
/* If the palette has 256 or fewer entries but is too large for the bit
* depth, we don't issue an error, to preserve the behavior of previous
* libpng versions. We silently truncate the unused extra palette entries
* here.
*/
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
max_palette_length = (1 << png_ptr->bit_depth);
else
max_palette_length = PNG_MAX_PALETTE_LENGTH;
if (num > max_palette_length)
num = max_palette_length;
#ifdef PNG_POINTER_INDEXING_SUPPORTED #ifdef PNG_POINTER_INDEXING_SUPPORTED
for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++) for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
{ {
@ -959,7 +1009,7 @@ png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
#endif #endif
{ {
png_crc_finish(png_ptr, 0); png_crc_finish(png_ptr, (int) length - num * 3);
} }
#ifndef PNG_READ_OPT_PLTE_SUPPORTED #ifndef PNG_READ_OPT_PLTE_SUPPORTED
@ -1651,7 +1701,7 @@ png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
++entry_start; ++entry_start;
/* A sample depth should follow the separator, and we should be on it */ /* A sample depth should follow the separator, and we should be on it */
if (entry_start > buffer + length - 2) if (length < 2U || entry_start > buffer + (length - 2U))
{ {
png_warning(png_ptr, "malformed sPLT chunk"); png_warning(png_ptr, "malformed sPLT chunk");
return; return;
@ -1818,7 +1868,7 @@ png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
return; return;
} }
if (length > png_ptr->num_palette || if (length > (unsigned int) png_ptr->num_palette ||
length > (unsigned int) PNG_MAX_PALETTE_LENGTH || length > (unsigned int) PNG_MAX_PALETTE_LENGTH ||
length == 0) length == 0)
{ {
@ -1982,7 +2032,8 @@ png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
num = length / 2 ; num = length / 2 ;
if (num != png_ptr->num_palette || num > (unsigned int) PNG_MAX_PALETTE_LENGTH) if (num != (unsigned int) png_ptr->num_palette ||
num > (unsigned int) PNG_MAX_PALETTE_LENGTH)
{ {
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "invalid"); png_chunk_benign_error(png_ptr, "invalid");
@ -2154,7 +2205,7 @@ png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
/* We need to have at least 12 bytes after the purpose string /* We need to have at least 12 bytes after the purpose string
* in order to get the parameter information. * in order to get the parameter information.
*/ */
if (endptr <= buf + 12) if (endptr - buf <= 12)
{ {
png_chunk_benign_error(png_ptr, "invalid"); png_chunk_benign_error(png_ptr, "invalid");
return; return;
@ -4019,7 +4070,7 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
* *
* TODO: deal more elegantly with truncated IDAT lists. * TODO: deal more elegantly with truncated IDAT lists.
*/ */
ret = inflate(&png_ptr->zstream, Z_NO_FLUSH); ret = PNG_INFLATE(png_ptr, Z_NO_FLUSH);
/* Take the unconsumed output back. */ /* Take the unconsumed output back. */
if (output != NULL) if (output != NULL)

29
GRRLIB/lib/png/pngset.c
View file

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -123,12 +123,12 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
png_fixed(png_ptr, red_X, "cHRM Red X"), png_fixed(png_ptr, red_X, "cHRM Red X"),
png_fixed(png_ptr, red_Y, "cHRM Red Y"), png_fixed(png_ptr, red_Y, "cHRM Red Y"),
png_fixed(png_ptr, red_Z, "cHRM Red Z"), png_fixed(png_ptr, red_Z, "cHRM Red Z"),
png_fixed(png_ptr, green_X, "cHRM Red X"), png_fixed(png_ptr, green_X, "cHRM Green X"),
png_fixed(png_ptr, green_Y, "cHRM Red Y"), png_fixed(png_ptr, green_Y, "cHRM Green Y"),
png_fixed(png_ptr, green_Z, "cHRM Red Z"), png_fixed(png_ptr, green_Z, "cHRM Green Z"),
png_fixed(png_ptr, blue_X, "cHRM Red X"), png_fixed(png_ptr, blue_X, "cHRM Blue X"),
png_fixed(png_ptr, blue_Y, "cHRM Red Y"), png_fixed(png_ptr, blue_Y, "cHRM Blue Y"),
png_fixed(png_ptr, blue_Z, "cHRM Red Z")); png_fixed(png_ptr, blue_Z, "cHRM Blue Z"));
} }
# endif /* FLOATING_POINT */ # endif /* FLOATING_POINT */
@ -513,12 +513,17 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
png_const_colorp palette, int num_palette) png_const_colorp palette, int num_palette)
{ {
png_uint_32 max_palette_length;
png_debug1(1, "in %s storage function", "PLTE"); png_debug1(1, "in %s storage function", "PLTE");
if (png_ptr == NULL || info_ptr == NULL) if (png_ptr == NULL || info_ptr == NULL)
return; return;
if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) max_palette_length = (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
(1 << info_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
if (num_palette < 0 || num_palette > (int) max_palette_length)
{ {
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Invalid palette length"); png_error(png_ptr, "Invalid palette length");
@ -551,8 +556,8 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
/* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
* of num_palette entries, in case of an invalid PNG file that has * of num_palette entries, in case of an invalid PNG file or incorrect
* too-large sample values. * call to png_set_PLTE() with too-large sample values.
*/ */
png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr, png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr,
PNG_MAX_PALETTE_LENGTH * (sizeof (png_color)))); PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
@ -709,7 +714,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
{ {
int i; int i;
png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11 : png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11U :
(unsigned long)png_ptr->chunk_name); (unsigned long)png_ptr->chunk_name);
if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL) if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
@ -1568,7 +1573,7 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
{ {
/* Images with dimensions larger than these limits will be /* Images with dimensions larger than these limits will be
* rejected by png_set_IHDR(). To accept any PNG datastream * rejected by png_set_IHDR(). To accept any PNG datastream
* regardless of dimensions, set both limits to 0x7ffffffL. * regardless of dimensions, set both limits to 0x7fffffff.
*/ */
if (png_ptr == NULL) if (png_ptr == NULL)
return; return;

3
GRRLIB/lib/png/pngstruct.h
View file

@ -263,6 +263,9 @@ struct png_struct_def
/* pixel depth used for the row buffers */ /* pixel depth used for the row buffers */
png_byte transformed_pixel_depth; png_byte transformed_pixel_depth;
/* pixel depth after read/write transforms */ /* pixel depth after read/write transforms */
#if PNG_ZLIB_VERNUM >= 0x1240
png_byte zstream_start; /* at start of an input zlib stream */
#endif /* Zlib >= 1.2.4 */
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
png_uint_16 filler; /* filler bytes for pixel expansion */ png_uint_16 filler; /* filler bytes for pixel expansion */
#endif #endif

4
GRRLIB/lib/png/pngtrans.c
View file

@ -30,7 +30,7 @@ png_set_bgr(png_structrp png_ptr)
#endif #endif
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Turn on 16 bit byte swapping */ /* Turn on 16-bit byte swapping */
void PNGAPI void PNGAPI
png_set_swap(png_structrp png_ptr) png_set_swap(png_structrp png_ptr)
{ {
@ -313,7 +313,7 @@ png_do_invert(png_row_infop row_info, png_bytep row)
#ifdef PNG_16BIT_SUPPORTED #ifdef PNG_16BIT_SUPPORTED
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Swaps byte order on 16 bit depth images */ /* Swaps byte order on 16-bit depth images */
void /* PRIVATE */ void /* PRIVATE */
png_do_swap(png_row_infop row_info, png_bytep row) png_do_swap(png_row_infop row_info, png_bytep row)
{ {

2
GRRLIB/lib/png/pngwio.c
View file

@ -26,7 +26,7 @@
* writes to a file pointer. Note that this routine sometimes gets called * writes to a file pointer. Note that this routine sometimes gets called
* with very small lengths, so you should implement some kind of simple * with very small lengths, so you should implement some kind of simple
* buffering if you are using unbuffered writes. This should never be asked * buffering if you are using unbuffered writes. This should never be asked
* to write more than 64K on a 16 bit machine. * to write more than 64K on a 16-bit machine.
*/ */
void /* PRIVATE */ void /* PRIVATE */

8
GRRLIB/lib/png/pngwrite.c
View file

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file /* pngwrite.c - general routines to write a PNG file
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -206,7 +206,7 @@ png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
png_write_PLTE(png_ptr, info_ptr->palette, png_write_PLTE(png_ptr, info_ptr->palette,
(png_uint_32)info_ptr->num_palette); (png_uint_32)info_ptr->num_palette);
else if ((info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) !=0) else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Valid palette required for paletted images"); png_error(png_ptr, "Valid palette required for paletted images");
#ifdef PNG_WRITE_tRNS_SUPPORTED #ifdef PNG_WRITE_tRNS_SUPPORTED
@ -1422,7 +1422,7 @@ png_write_png(png_structrp png_ptr, png_inforp info_ptr,
png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ENDIAN not supported"); png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ENDIAN not supported");
#endif #endif
/* Swap bits of 1, 2, 4 bit packed pixel formats */ /* Swap bits of 1-bit, 2-bit, 4-bit packed pixel formats */
if ((transforms & PNG_TRANSFORM_PACKSWAP) != 0) if ((transforms & PNG_TRANSFORM_PACKSWAP) != 0)
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED #ifdef PNG_WRITE_PACKSWAP_SUPPORTED
png_set_packswap(png_ptr); png_set_packswap(png_ptr);
@ -1998,7 +1998,7 @@ png_image_write_main(png_voidp argument)
/* Now set up the data transformations (*after* the header is written), /* Now set up the data transformations (*after* the header is written),
* remove the handled transformations from the 'format' flags for checking. * remove the handled transformations from the 'format' flags for checking.
* *
* First check for a little endian system if writing 16 bit files. * First check for a little endian system if writing 16-bit files.
*/ */
if (write_16bit != 0) if (write_16bit != 0)
{ {

22
GRRLIB/lib/png/pngwutil.c
View file

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file /* pngwutil.c - utilities to write a PNG file
* *
* Last changed in libpng 1.6.18 [July 23, 2015] * Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2015 Glenn Randers-Pehrson * Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -179,7 +179,7 @@ png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
if (png_ptr == NULL) if (png_ptr == NULL)
return; return;
/* On 64 bit architectures 'length' may not fit in a png_uint_32. */ /* On 64-bit architectures 'length' may not fit in a png_uint_32. */
if (length > PNG_UINT_31_MAX) if (length > PNG_UINT_31_MAX)
png_error(png_ptr, "length exceeds PNG maximum"); png_error(png_ptr, "length exceeds PNG maximum");
@ -922,17 +922,20 @@ void /* PRIVATE */
png_write_PLTE(png_structrp png_ptr, png_const_colorp palette, png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
png_uint_32 num_pal) png_uint_32 num_pal)
{ {
png_uint_32 i; png_uint_32 max_palette_length, i;
png_const_colorp pal_ptr; png_const_colorp pal_ptr;
png_byte buf[3]; png_byte buf[3];
png_debug(1, "in png_write_PLTE"); png_debug(1, "in png_write_PLTE");
max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
(1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
if (( if ((
#ifdef PNG_MNG_FEATURES_SUPPORTED #ifdef PNG_MNG_FEATURES_SUPPORTED
(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 && (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 &&
#endif #endif
num_pal == 0) || num_pal > 256) num_pal == 0) || num_pal > max_palette_length)
{ {
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{ {
@ -1444,7 +1447,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
else if (color_type == PNG_COLOR_TYPE_GRAY) else if (color_type == PNG_COLOR_TYPE_GRAY)
{ {
/* One 16 bit value */ /* One 16-bit value */
if (tran->gray >= (1 << png_ptr->bit_depth)) if (tran->gray >= (1 << png_ptr->bit_depth))
{ {
png_app_warning(png_ptr, png_app_warning(png_ptr,
@ -1459,7 +1462,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
else if (color_type == PNG_COLOR_TYPE_RGB) else if (color_type == PNG_COLOR_TYPE_RGB)
{ {
/* Three 16 bit values */ /* Three 16-bit values */
png_save_uint_16(buf, tran->red); png_save_uint_16(buf, tran->red);
png_save_uint_16(buf + 2, tran->green); png_save_uint_16(buf + 2, tran->green);
png_save_uint_16(buf + 4, tran->blue); png_save_uint_16(buf + 4, tran->blue);
@ -2560,7 +2563,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
if (filter_to_do == PNG_FILTER_SUB) if (filter_to_do == PNG_FILTER_SUB)
/* It's the only filter so no testing is needed */ /* It's the only filter so no testing is needed */
{ {
(void) png_setup_sub_row(png_ptr, bpp, row_bytes, mins); (void) png_setup_sub_row(png_ptr, bpp, row_bytes, mins);
best_row = png_ptr->try_row; best_row = png_ptr->try_row;
} }
@ -2569,7 +2572,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
png_size_t sum; png_size_t sum;
png_size_t lmins = mins; png_size_t lmins = mins;
sum = png_setup_sub_row(png_ptr, bpp, row_bytes, lmins); sum = png_setup_sub_row(png_ptr, bpp, row_bytes, lmins);
if (sum < mins) if (sum < mins)
{ {
@ -2595,7 +2598,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
png_size_t sum; png_size_t sum;
png_size_t lmins = mins; png_size_t lmins = mins;
sum = png_setup_up_row(png_ptr, row_bytes, lmins); sum = png_setup_up_row(png_ptr, row_bytes, lmins);
if (sum < mins) if (sum < mins)
{ {
@ -2651,7 +2654,6 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
if (sum < mins) if (sum < mins)
{ {
mins = sum;
best_row = png_ptr->try_row; best_row = png_ptr->try_row;
if (png_ptr->tst_row != NULL) if (png_ptr->tst_row != NULL)
{ {