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[libng16] Reverted recent mistaken change of 0xnnnn to 0xnnnnUL

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This commit is contained in:
Glenn Randers-Pehrson 2015-08-17 20:46:27 -05:00
parent 15e69748f1
commit a8242fe6fb
11 changed files with 77 additions and 82 deletions
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5
ANNOUNCE
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@ -1,4 +1,4 @@
Libpng 1.6.19beta02 - August 17, 2015
Libpng 1.6.19beta02 - August 18, 2015
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -40,7 +40,7 @@ Version 1.6.19beta01 [July 30, 2015]
Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
Version 1.6.19beta02 [August 17, 2015]
Version 1.6.19beta02 [August 18, 2015]
Moved config.h.in~ from the "libpng_autotools_files" list to the
"libpng_autotools_extra" list in autogen.sh because it was causing a
false positive for missing files (bug report by Robert C. Seacord).
@ -48,7 +48,6 @@ Version 1.6.19beta02 [August 17, 2015]
to suppress clang warnings (Bug report by Viktor Szakats).
Fixed some bad links in the man page.
Changed "n bit" to "n-bit" in comments.
Changed 0xnnnn constants to 0xnnnnUL.
Added signed/unsigned 16-bit safety net. This removes the dubious
0x8000 flag definitions on 16-bit systems. They aren't supported
yet the defs *probably* work, however it seems much safer to do this

3
CHANGES
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@ -5320,7 +5320,7 @@ Version 1.6.19beta01 [July 30, 2015]
Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
Version 1.6.19beta02 [August 17, 2015]
Version 1.6.19beta02 [August 18, 2015]
Moved config.h.in~ from the "libpng_autotools_files" list to the
"libpng_autotools_extra" list in autogen.sh because it was causing a
false positive for missing files (bug report by Robert C. Seacord).
@ -5328,7 +5328,6 @@ Version 1.6.19beta02 [August 17, 2015]
to suppress clang warnings (Bug report by Viktor Szakats).
Fixed some bad links in the man page.
Changed "n bit" to "n-bit" in comments.
Changed 0xnnnn constants to 0xnnnnUL.
Added signed/unsigned 16-bit safety net. This removes the dubious
0x8000 flag definitions on 16-bit systems. They aren't supported
yet the defs *probably* work, however it seems much safer to do this

4
example.c
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@ -271,7 +271,7 @@ void read_png(char *file_name) /* We need to open the file */
{
png_structp png_ptr;
png_infop info_ptr;
unsigned int sig_read = 0;
int sig_read = 0;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type;
FILE *fp;
@ -280,7 +280,7 @@ void read_png(char *file_name) /* We need to open the file */
return (ERROR);
#else no_open_file /* prototype 2 */
void read_png(FILE *fp, unsigned int sig_read) /* File is already open */
void read_png(FILE *fp, int sig_read) /* File is already open */
{
png_structp png_ptr;
png_infop info_ptr;

94
png.c
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@ -769,13 +769,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.6.19beta02 - August 17, 2015" PNG_STRING_NEWLINE \
"libpng version 1.6.19beta02 - August 18, 2015" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2015 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 1.6.19beta02 - August 17, 2015\
return "libpng version 1.6.19beta02 - August 18, 2015\
Copyright (c) 1998-2015 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -1512,10 +1512,10 @@ png_XYZ_normalize(png_XYZ *XYZ)
* safe.
*/
Y = XYZ->red_Y;
if (0x7fffffffL - Y < XYZ->green_X)
if (0x7fffffff - Y < XYZ->green_X)
return 1;
Y += XYZ->green_Y;
if (0x7fffffffL - Y < XYZ->blue_X)
if (0x7fffffff - Y < XYZ->blue_X)
return 1;
Y += XYZ->blue_Y;
@ -1743,7 +1743,7 @@ png_colorspace_set_endpoints(png_const_structrp png_ptr,
static char
png_icc_tag_char(png_uint_32 byte)
{
byte &= 0xffU;
byte &= 0xff;
if (byte >= 32 && byte <= 126)
return (char)byte;
else
@ -1967,7 +1967,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
* 16 bits.
*/
temp = png_get_uint_32(profile+64);
if (temp >= 0xffffUL) /* The ICC limit */
if (temp >= 0xffff) /* The ICC limit */
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid rendering intent");
@ -1991,7 +1991,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
* data.)
*/
temp = png_get_uint_32(profile+36); /* signature 'ascp' */
if (temp != 0x61637370UL)
if (temp != 0x61637370)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid signature");
@ -2029,13 +2029,13 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+16); /* data colour space field */
switch (temp)
{
case 0x52474220UL: /* 'RGB ' */
case 0x52474220: /* 'RGB ' */
if ((color_type & PNG_COLOR_MASK_COLOR) == 0)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"RGB color space not permitted on grayscale PNG");
break;
case 0x47524159UL: /* 'GRAY' */
case 0x47524159: /* 'GRAY' */
if ((color_type & PNG_COLOR_MASK_COLOR) != 0)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"Gray color space not permitted on RGB PNG");
@ -2058,19 +2058,19 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+12); /* profile/device class */
switch (temp)
{
case 0x73636e72UL: /* 'scnr' */
case 0x6d6e7472UL: /* 'mntr' */
case 0x70727472UL: /* 'prtr' */
case 0x73706163UL: /* 'spac' */
case 0x73636e72: /* 'scnr' */
case 0x6d6e7472: /* 'mntr' */
case 0x70727472: /* 'prtr' */
case 0x73706163: /* 'spac' */
/* All supported */
break;
case 0x61627374UL: /* 'abst' */
case 0x61627374: /* 'abst' */
/* May not be embedded in an image */
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid embedded Abstract ICC profile");
case 0x6c696e6bUL: /* 'link' */
case 0x6c696e6b: /* 'link' */
/* DeviceLink profiles cannot be interpreted in a non-device specific
* fashion, if an app uses the AToB0Tag in the profile the results are
* undefined unless the result is sent to the intended device,
@ -2080,7 +2080,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"unexpected DeviceLink ICC profile class");
case 0x6e6d636cUL: /* 'nmcl' */
case 0x6e6d636c: /* 'nmcl' */
/* A NamedColor profile is also device specific, however it doesn't
* contain an AToB0 tag that is open to misinterpretation. Almost
* certainly it will fail the tests below.
@ -2106,8 +2106,8 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+20);
switch (temp)
{
case 0x58595a20UL: /* 'XYZ ' */
case 0x4c616220UL: /* 'Lab ' */
case 0x58595a20: /* 'XYZ ' */
case 0x4c616220: /* 'Lab ' */
break;
default:
@ -2184,22 +2184,22 @@ static const struct
* all four ICC sRGB profiles from www.color.org.
*/
/* adler32, crc32, MD5[4], intent, date, length, file-name */
PNG_ICC_CHECKSUM(0x0a3fd9f6UL, 0x3b8772b9UL,
PNG_MD5(0x29f83ddeUL, 0xaff255aeUL, 0x7842fae4UL, 0xca83390dUL), 0, 0,
PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9,
PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
"2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
/* ICC sRGB v2 perceptual no black-compensation: */
PNG_ICC_CHECKSUM(0x4909e5e1UL, 0x427ebb21UL,
PNG_MD5(0xc95bd637UL, 0xe95d8a3bUL, 0x0df38f99UL, 0xc1320389UL), 1, 0,
PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21,
PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
"2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
PNG_ICC_CHECKSUM(0xfd2144a1UL, 0x306fd8aeUL,
PNG_MD5(0xfc663378UL, 0x37e2886bUL, 0xfd72e983UL, 0x8228f1b8UL), 0, 0,
PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae,
PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
"2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
/* ICC sRGB v4 perceptual */
PNG_ICC_CHECKSUM(0x209c35d2UL, 0xbbef7812UL,
PNG_MD5(0x34562abfUL, 0x994ccd06UL, 0x6d2c5721UL, 0xd0d68c5dUL), 0, 0,
PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812,
PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
"2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
/* The following profiles have no known MD5 checksum. If there is a match
@ -2207,8 +2207,8 @@ static const struct
* a warning is produced. The first two of these profiles have a 'cprt' tag
* which suggests that they were also made by Hewlett Packard.
*/
PNG_ICC_CHECKSUM(0xa054d762UL, 0x5d5129ceUL,
PNG_MD5(0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL), 1, 0,
PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
"2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
/* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not
@ -2218,14 +2218,12 @@ static const struct
* the previous profile except for the mediaWhitePointTag error and a missing
* chromaticAdaptationTag.
*/
PNG_ICC_CHECKSUM(0xf784f3fbUL, 0x182ea552UL,
PNG_MD5(0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL),
0, 1/*broken*/,
PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
PNG_ICC_CHECKSUM(0x0398f3fcUL, 0xf29e526dUL,
PNG_MD5(0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL),
1, 1/*broken*/,
PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
};
@ -2242,7 +2240,7 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
*/
png_uint_32 length = 0;
png_uint_32 intent = 0x10000UL; /* invalid */
png_uint_32 intent = 0x10000; /* invalid */
#if PNG_sRGB_PROFILE_CHECKS > 1
uLong crc = 0; /* the value for 0 length data */
#endif
@ -3151,7 +3149,7 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
else
num = fp;
if (num <= 0x80000000UL) /* else overflowed */
if (num <= 0x80000000) /* else overflowed */
{
unsigned int ndigits = 0, first = 16 /* flag value */;
char digits[10];
@ -3285,15 +3283,15 @@ png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
/* Following can't overflow because the arguments only
* have 31 bits each, however the result may be 32 bits.
*/
s16 = (A >> 16) * (T & 0xffffUL) +
(A & 0xffffUL) * (T >> 16);
s16 = (A >> 16) * (T & 0xffff) +
(A & 0xffff) * (T >> 16);
/* Can't overflow because the a*times bit is only 30
* bits at most.
*/
s32 = (A >> 16) * (T >> 16) + (s16 >> 16);
s00 = (A & 0xffffUL) * (T & 0xffffUL);
s00 = (A & 0xffff) * (T & 0xffff);
s16 = (s16 & 0xffffUL) << 16;
s16 = (s16 & 0xffff) << 16;
s00 += s16;
if (s00 < s16)
@ -3586,19 +3584,19 @@ png_log16bit(png_uint_32 x)
unsigned int lg2 = 0;
/* As above, but now the input has 16 bits. */
if ((x &= 0xffffUL) == 0)
if ((x &= 0xffff) == 0)
return -1;
if ((x & 0xff00UL) == 0)
if ((x & 0xff00) == 0)
lg2 = 8, x <<= 8;
if ((x & 0xf000UL) == 0)
if ((x & 0xf000) == 0)
lg2 += 4, x <<= 4;
if ((x & 0xc000UL) == 0)
if ((x & 0xc000) == 0)
lg2 += 2, x <<= 2;
if ((x & 0x8000UL) == 0)
if ((x & 0x8000) == 0)
lg2 += 1, x <<= 1;
/* Calculate the base logarithm from the top 8 bits as a 28-bit fractional
@ -3675,7 +3673,7 @@ for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
static png_uint_32
png_exp(png_fixed_point x)
{
if (x > 0 && x <= 0xfffffUL) /* Else overflow or zero (underflow) */
if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
{
/* Obtain a 4-bit approximation */
png_uint_32 e = png_32bit_exp[(x >> 12) & 0x0f];
@ -3731,7 +3729,7 @@ png_exp8bit(png_fixed_point lg2)
* step.
*/
x -= x >> 8;
return (png_byte)(((x + 0x7fffffUL) >> 24) & 0xff);
return (png_byte)(((x + 0x7fffffU) >> 24) & 0xff);
}
#ifdef PNG_16BIT_SUPPORTED
@ -3991,7 +3989,7 @@ png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
/* And fill in the final entries. */
while (last < (num << 8))
{
table[last & (0xffU >> shift)][last >> (8U - shift)] = 65535U;
table[last & (0xff >> shift)][last >> (8U - shift)] = 65535U;
last++;
}
}

10
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.19beta02, August 17, 2015
* libpng version 1.6.19beta02, August 18, 2015
*
* Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers:
* 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 0.97, January 1998, through 1.6.19beta02, August 17, 2015: Glenn
* libpng versions 0.97, January 1998, through 1.6.19beta02, August 18, 2015: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -251,7 +251,7 @@
*
* This code is released under the libpng license.
*
* libpng versions 1.0.7, July 1, 2000, through 1.6.19beta02, August 17, 2015, are
* libpng versions 1.0.7, July 1, 2000, through 1.6.19beta02, August 18, 2015, are
* Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.0.6
* with the following individuals added to the list of Contributing Authors:
@ -360,7 +360,7 @@
* Y2K compliance in libpng:
* =========================
*
* August 17, 2015
* August 18, 2015
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
@ -430,7 +430,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.19beta02"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.19beta02 - August 17, 2015\n"
" libpng version 1.6.19beta02 - August 18, 2015\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16

4
pngread.c
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@ -359,8 +359,8 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (s0 + s1 + 65536) & 0xffffUL;
png_uint_32 blue = (s2 + s1 + 65536) & 0xffffUL;
png_uint_32 red = (s0 + s1 + 65536) & 0xffff;
png_uint_32 blue = (s2 + s1 + 65536) & 0xffff;
*(rp ) = (png_byte)((red >> 8) & 0xff);
*(rp + 1) = (png_byte)(red & 0xff);
*(rp + 4) = (png_byte)((blue >> 8) & 0xff);

8
pngrtran.c
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@ -3642,7 +3642,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ *(sp + 3));
if (a == (png_uint_16)0xffffL)
if (a == (png_uint_16)0xffff)
{
png_uint_16 v;
@ -3691,7 +3691,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
*(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
}
else if (a < 0xffffL)
else if (a < 0xffff)
{
png_uint_16 g, v;
@ -3795,7 +3795,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
<< 8) + (png_uint_16)(*(sp + 7)));
if (a == (png_uint_16)0xffffL)
if (a == (png_uint_16)0xffff)
{
png_uint_16 v;
@ -3881,7 +3881,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
*(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
else if (a < 0xffffL)
else if (a < 0xffff)
{
png_uint_16 v;

15
pngrutil.c
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@ -85,10 +85,10 @@ png_int_32 (PNGAPI
png_get_int_32)(png_const_bytep buf)
{
png_uint_32 uval = png_get_uint_32(buf);
if ((uval & 0x80000000UL) == 0) /* non-negative */
if ((uval & 0x80000000) == 0) /* non-negative */
return uval;
uval = (uval ^ 0xffffffffU) + 1; /* 2's complement: -x = ~x+1 */
uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
return -(png_int_32)uval;
}
@ -3120,10 +3120,10 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
# define PNG_LSR(x,s) ((x)>>(s))
# define PNG_LSL(x,s) ((x)<<(s))
# endif
# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822UL,(3-(p))*8+(7-(x))) :\
PNG_LSR(0xaa55ff00UL,(7-(p))*8+(7-(x)))) & 1)
# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33UL,(3-(p))*8+(7-(x))) :\
PNG_LSR(0xff55ff00UL,(7-(p))*8+(7-(x)))) & 1)
# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822,(3-(p))*8+(7-(x))) :\
PNG_LSR(0xaa55ff00,(7-(p))*8+(7-(x)))) & 1)
# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33,(3-(p))*8+(7-(x))) :\
PNG_LSR(0xff55ff00,(7-(p))*8+(7-(x)))) & 1)
/* Return a mask for pass 'p' pixel 'x' at depth 'd'. The mask is
* little endian - the first pixel is at bit 0 - however the extra
@ -3143,8 +3143,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
* cases the result needs replicating, for the 4-bpp case the above
* generates a full 32 bits.
*/
# define MASK_EXPAND(m,d) \
((m)*((d)==1?0x01010101UL:((d)==2?0x00010001UL:1)))
# define MASK_EXPAND(m,d) ((m)*((d)==1?0x01010101:((d)==2?0x00010001:1)))
# define S_MASK(p,d,s) MASK_EXPAND(S_MASKx(p,0,d,s) + S_MASKx(p,1,d,s) +\
S_MASKx(p,2,d,s) + S_MASKx(p,3,d,s) + S_MASKx(p,4,d,s) +\

4
pngset.c
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@ -709,7 +709,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
{
int i;
png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11UL :
png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11U :
(unsigned long)png_ptr->chunk_name);
if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
@ -1568,7 +1568,7 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
{
/* Images with dimensions larger than these limits will be
* rejected by png_set_IHDR(). To accept any PNG datastream
* regardless of dimensions, set both limits to 0x7ffffffUL.
* regardless of dimensions, set both limits to 0x7ffffff.
*/
if (png_ptr == NULL)
return;

10
pngwrite.c
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@ -669,8 +669,8 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffUL);
png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffUL);
png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
*(rp ) = (png_byte)(red >> 8);
*(rp + 1) = (png_byte)red;
*(rp + 4) = (png_byte)(blue >> 8);
@ -1570,7 +1570,7 @@ png_write_image_16bit(png_voidp argument)
* is only initialized when required.
*/
if (alpha > 0 && alpha < 65535)
reciprocal = ((0xffffU<<15)+(alpha>>1))/alpha;
reciprocal = ((0xffff<<15)+(alpha>>1))/alpha;
c = channels;
do /* always at least one channel */
@ -1621,7 +1621,7 @@ png_write_image_16bit(png_voidp argument)
* calculation can be done to 15 bits of accuracy; however, the output needs to
* be scaled in the range 0..255*65535, so include that scaling here.
*/
# define UNP_RECIPROCAL(alpha) ((((0xffffU*0xffU)<<7)+(alpha>>1))/alpha)
# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha)
static png_byte
png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
@ -1836,7 +1836,7 @@ png_image_set_PLTE(png_image_write_control *display)
* divided by 128 (i.e. asr 7).
*/
if (alphabyte > 0 && alphabyte < 255)
reciprocal = (((0xffffU*0xffU)<<7)+(alpha>>1))/alpha;
reciprocal = (((0xffff*0xff)<<7)+(alpha>>1))/alpha;
tRNS[i] = alphabyte;
if (alphabyte < 255)

2
pngwutil.c
View File

@ -237,7 +237,7 @@ png_image_size(png_structrp png_ptr)
}
else
return 0xffffffffUL;
return 0xffffffffU;
}
#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED