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libpng: Update to 1.6.43

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(cherry picked from commit 41268d7faa05888f0067679fa3374138de2f073b)
This commit is contained in:
Jakub Marcowski 2024-03-09 15:10:17 +01:00 committed by Relintai
parent d4078c5568
commit 86c59a960e
18 changed files with 408 additions and 337 deletions
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4
COPYRIGHT.txt
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@ -194,8 +194,8 @@ License: BSD-3-clause
Files: ./thirdparty/libpng/
Comment: libpng
Copyright: 1995-2019, The PNG Reference Library Authors.
2018-2019, Cosmin Truta.
Copyright: 1995-2024, The PNG Reference Library Authors.
2018-2024, Cosmin Truta.
2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
1996-1997, Andreas Dilger.
1995-1996, Guy Eric Schalnat, Group 42, Inc.

8
thirdparty/README.md vendored
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@ -150,14 +150,14 @@ Files extracted from upstream source:
## libpng
- Upstream: http://libpng.org/pub/png/libpng.html
- Version: 1.6.40 (f135775ad4e5d4408d2e12ffcc71bb36e6b48551, 2023)
- Version: 1.6.43 (ed217e3e601d8e462f7fd1e04bed43ac42212429, 2024)
- License: libpng/zlib
Files extracted from upstream source:
- all .c and .h files of the main directory, except from
`example.c` and `pngtest.c`
- the arm/ folder
- All `.c` and `.h` files of the main directory, apart from `example.c` and
`pngtest.c`
- The `arm/` folder
- `scripts/pnglibconf.h.prebuilt` as `pnglibconf.h`
- `LICENSE`

4
thirdparty/libpng/LICENSE vendored
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@ -4,8 +4,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
PNG Reference Library License version 2
---------------------------------------
* Copyright (c) 1995-2023 The PNG Reference Library Authors.
* Copyright (c) 2018-2023 Cosmin Truta.
* Copyright (c) 1995-2024 The PNG Reference Library Authors.
* Copyright (c) 2018-2024 Cosmin Truta.
* Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* Copyright (c) 1996-1997 Andreas Dilger.
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

110
thirdparty/libpng/png.c vendored
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -14,27 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_40 Your_png_h_is_not_version_1_6_40;
#ifdef __GNUC__
/* The version tests may need to be added to, but the problem warning has
* consistently been fixed in GCC versions which obtain wide-spread release.
* The problem is that many versions of GCC rearrange comparison expressions in
* the optimizer in such a way that the results of the comparison will change
* if signed integer overflow occurs. Such comparisons are not permitted in
* ANSI C90, however GCC isn't clever enough to work out that that do not occur
* below in png_ascii_from_fp and png_muldiv, so it produces a warning with
* -Wextra. Unfortunately this is highly dependent on the optimizer and the
* machine architecture so the warning comes and goes unpredictably and is
* impossible to "fix", even were that a good idea.
*/
#if __GNUC__ == 7 && __GNUC_MINOR__ == 1
#define GCC_STRICT_OVERFLOW 1
#endif /* GNU 7.1.x */
#endif /* GNU */
#ifndef GCC_STRICT_OVERFLOW
#define GCC_STRICT_OVERFLOW 0
#endif
typedef png_libpng_version_1_6_43 Your_png_h_is_not_version_1_6_43;
/* 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
@ -73,21 +53,21 @@ png_set_sig_bytes(png_structrp png_ptr, int num_bytes)
int PNGAPI
png_sig_cmp(png_const_bytep sig, size_t start, size_t num_to_check)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
static const png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
if (num_to_check > 8)
num_to_check = 8;
else if (num_to_check < 1)
return (-1);
return -1;
if (start > 7)
return (-1);
return -1;
if (start + num_to_check > 8)
num_to_check = 8 - start;
return ((int)(memcmp(&sig[start], &png_signature[start], num_to_check)));
return memcmp(&sig[start], &png_signature[start], num_to_check);
}
#endif /* READ */
@ -447,7 +427,6 @@ png_info_init_3,(png_infopp ptr_ptr, size_t png_info_struct_size),
memset(info_ptr, 0, (sizeof *info_ptr));
}
/* The following API is not called internally */
void PNGAPI
png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
int freer, png_uint_32 mask)
@ -686,9 +665,9 @@ png_voidp PNGAPI
png_get_io_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
return NULL;
return (png_ptr->io_ptr);
return png_ptr->io_ptr;
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@ -752,7 +731,7 @@ png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
{
size_t pos = 0;
char number_buf[5]; /* enough for a four-digit year */
char number_buf[5] = {0, 0, 0, 0, 0}; /* enough for a four-digit year */
# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string))
# define APPEND_NUMBER(format, value)\
@ -815,8 +794,8 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.40" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2023 Cosmin Truta" PNG_STRING_NEWLINE \
"libpng version 1.6.43" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2024 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
@ -977,7 +956,7 @@ png_reset_zstream(png_structrp png_ptr)
return Z_STREAM_ERROR;
/* WARNING: this resets the window bits to the maximum! */
return (inflateReset(&png_ptr->zstream));
return inflateReset(&png_ptr->zstream);
}
#endif /* READ */
@ -986,7 +965,7 @@ png_uint_32 PNGAPI
png_access_version_number(void)
{
/* Version of *.c files used when building libpng */
return((png_uint_32)PNG_LIBPNG_VER);
return (png_uint_32)PNG_LIBPNG_VER;
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@ -1842,14 +1821,14 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
}
# ifdef PNG_WARNINGS_SUPPORTED
else
{
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
{
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
pos = png_safecat(message, (sizeof message), pos,
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
}
pos = png_safecat(message, (sizeof message), pos,
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
}
# endif
/* The 'reason' is an arbitrary message, allow +79 maximum 195 */
pos = png_safecat(message, (sizeof message), pos, reason);
@ -2532,17 +2511,6 @@ png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
#endif /* COLORSPACE */
#ifdef __GNUC__
/* This exists solely to work round a warning from GNU C. */
static int /* PRIVATE */
png_gt(size_t a, size_t b)
{
return a > b;
}
#else
# define png_gt(a,b) ((a) > (b))
#endif
void /* PRIVATE */
png_check_IHDR(png_const_structrp png_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
@ -2564,8 +2532,16 @@ png_check_IHDR(png_const_structrp png_ptr,
error = 1;
}
if (png_gt(((width + 7) & (~7U)),
((PNG_SIZE_MAX
/* The bit mask on the first line below must be at least as big as a
* png_uint_32. "~7U" is not adequate on 16-bit systems because it will
* be an unsigned 16-bit value. Casting to (png_alloc_size_t) makes the
* type of the result at least as bit (in bits) as the RHS of the > operator
* which also avoids a common warning on 64-bit systems that the comparison
* of (png_uint_32) against the constant value on the RHS will always be
* false.
*/
if (((width + 7) & ~(png_alloc_size_t)7) >
(((PNG_SIZE_MAX
- 48 /* big_row_buf hack */
- 1) /* filter byte */
/ 8) /* 8-byte RGBA pixels */
@ -2891,14 +2867,6 @@ png_pow10(int power)
/* Function to format a floating point value in ASCII with a given
* precision.
*/
#if GCC_STRICT_OVERFLOW
#pragma GCC diagnostic push
/* The problem arises below with exp_b10, which can never overflow because it
* comes, originally, from frexp and is therefore limited to a range which is
* typically +/-710 (log2(DBL_MAX)/log2(DBL_MIN)).
*/
#pragma GCC diagnostic warning "-Wstrict-overflow=2"
#endif /* GCC_STRICT_OVERFLOW */
void /* PRIVATE */
png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, size_t size,
double fp, unsigned int precision)
@ -3220,10 +3188,6 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, size_t size,
/* Here on buffer too small. */
png_error(png_ptr, "ASCII conversion buffer too small");
}
#if GCC_STRICT_OVERFLOW
#pragma GCC diagnostic pop
#endif /* GCC_STRICT_OVERFLOW */
# endif /* FLOATING_POINT */
# ifdef PNG_FIXED_POINT_SUPPORTED
@ -3251,7 +3215,7 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
if (num <= 0x80000000) /* else overflowed */
{
unsigned int ndigits = 0, first = 16 /* flag value */;
char digits[10];
char digits[10] = {0};
while (num)
{
@ -3336,15 +3300,6 @@ png_fixed(png_const_structrp png_ptr, double fp, png_const_charp text)
* the nearest .00001). Overflow and divide by zero are signalled in
* the result, a boolean - true on success, false on overflow.
*/
#if GCC_STRICT_OVERFLOW /* from above */
/* It is not obvious which comparison below gets optimized in such a way that
* signed overflow would change the result; looking through the code does not
* reveal any tests which have the form GCC complains about, so presumably the
* optimizer is moving an add or subtract into the 'if' somewhere.
*/
#pragma GCC diagnostic push
#pragma GCC diagnostic warning "-Wstrict-overflow=2"
#endif /* GCC_STRICT_OVERFLOW */
int
png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
png_int_32 divisor)
@ -3459,9 +3414,6 @@ png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
return 0;
}
#if GCC_STRICT_OVERFLOW
#pragma GCC diagnostic pop
#endif /* GCC_STRICT_OVERFLOW */
#endif /* READ_GAMMA || INCH_CONVERSIONS */
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)

63
thirdparty/libpng/png.h vendored
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@ -1,9 +1,9 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.40
* libpng version 1.6.43
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -15,7 +15,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.40, June 2023:
* libpng versions 1.6.36, December 2018, through 1.6.43, February 2024:
* Cosmin Truta
* See also "Contributing Authors", below.
*/
@ -27,8 +27,8 @@
* PNG Reference Library License version 2
* ---------------------------------------
*
* * Copyright (c) 1995-2023 The PNG Reference Library Authors.
* * Copyright (c) 2018-2023 Cosmin Truta.
* * Copyright (c) 1995-2024 The PNG Reference Library Authors.
* * Copyright (c) 2018-2024 Cosmin Truta.
* * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* * Copyright (c) 1996-1997 Andreas Dilger.
* * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -239,7 +239,7 @@
* ...
* 1.5.30 15 10530 15.so.15.30[.0]
* ...
* 1.6.40 16 10640 16.so.16.40[.0]
* 1.6.43 16 10643 16.so.16.43[.0]
*
* Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for
@ -255,9 +255,6 @@
* 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/IEC Standard; see
* <https://www.w3.org/TR/2003/REC-PNG-20031110/>
@ -278,19 +275,21 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.40"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.40 - June 21, 2023\n"
#define PNG_LIBPNG_VER_STRING "1.6.43"
#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
/* The versions of shared library builds should stay in sync, going forward */
#define PNG_LIBPNG_VER_SHAREDLIB 16
#define PNG_LIBPNG_VER_SONUM PNG_LIBPNG_VER_SHAREDLIB /* [Deprecated] */
#define PNG_LIBPNG_VER_DLLNUM PNG_LIBPNG_VER_SHAREDLIB /* [Deprecated] */
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 40
#define PNG_LIBPNG_VER_RELEASE 43
/* This should be zero for a public release, or non-zero for a
* development version. [Deprecated]
* development version.
*/
#define PNG_LIBPNG_VER_BUILD 0
@ -318,7 +317,7 @@
* From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
#define PNG_LIBPNG_VER 10640 /* 1.6.40 */
#define PNG_LIBPNG_VER 10643 /* 1.6.43 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@ -428,7 +427,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_40;
typedef char* png_libpng_version_1_6_43;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
@ -849,7 +848,7 @@ PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
/* Added to libpng-1.5.4 */
#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
#if INT_MAX >= 0x8000 /* else this might break */
#if ~0U > 0xffffU /* or else this might break on a 16-bit machine */
#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
#endif
@ -908,15 +907,15 @@ PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes));
/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
* PNG file. Returns zero if the supplied bytes match the 8-byte PNG
* signature, and non-zero otherwise. Having num_to_check == 0 or
* start > 7 will always fail (ie return non-zero).
* start > 7 will always fail (i.e. return non-zero).
*/
PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, size_t start,
size_t num_to_check));
/* Simple signature checking function. This is the same as calling
* png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
* png_check_sig(sig, n) := (png_sig_cmp(sig, 0, n) == 0).
*/
#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
#define png_check_sig(sig, n) (png_sig_cmp((sig), 0, (n)) == 0) /* DEPRECATED */
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
PNG_EXPORTA(4, png_structp, png_create_read_struct,
@ -1730,12 +1729,9 @@ PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr));
PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_32 free_me, int num));
/* Reassign responsibility for freeing existing data, whether allocated
/* Reassign the responsibility for freeing existing data, whether allocated
* by libpng or by the application; this works on the png_info structure passed
* in, it does not change the state for other png_info structures.
*
* It is unlikely that this function works correctly as of 1.6.0 and using it
* may result either in memory leaks or double free of allocated data.
* in, without changing the state for other png_info structures.
*/
PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr,
png_inforp info_ptr, int freer, png_uint_32 mask));
@ -3207,11 +3203,18 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
#ifdef PNG_MIPS_MSA_API_SUPPORTED
# define PNG_MIPS_MSA 6 /* HARDWARE: MIPS Msa SIMD instructions supported */
#endif
#define PNG_IGNORE_ADLER32 8
#ifdef PNG_POWERPC_VSX_API_SUPPORTED
# define PNG_POWERPC_VSX 10 /* HARDWARE: PowerPC VSX SIMD instructions supported */
#ifdef PNG_DISABLE_ADLER32_CHECK_SUPPORTED
# define PNG_IGNORE_ADLER32 8 /* SOFTWARE: disable Adler32 check on IDAT */
#endif
#define PNG_OPTION_NEXT 12 /* Next option - numbers must be even */
#ifdef PNG_POWERPC_VSX_API_SUPPORTED
# define PNG_POWERPC_VSX 10 /* HARDWARE: PowerPC VSX SIMD instructions
* supported */
#endif
#ifdef PNG_MIPS_MMI_API_SUPPORTED
# define PNG_MIPS_MMI 12 /* HARDWARE: MIPS MMI SIMD instructions supported */
#endif
#define PNG_OPTION_NEXT 14 /* Next option - numbers must be even */
/* Return values: NOTE: there are four values and 'off' is *not* zero */
#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */

4
thirdparty/libpng/pngconf.h vendored
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@ -1,9 +1,9 @@
/* pngconf.h - machine-configurable file for libpng
*
* libpng version 1.6.40
* libpng version 1.6.43
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

34
thirdparty/libpng/pngerror.c vendored
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@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -255,7 +255,7 @@ void
png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
png_alloc_size_t value)
{
char buffer[PNG_NUMBER_BUFFER_SIZE];
char buffer[PNG_NUMBER_BUFFER_SIZE] = {0};
png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
}
@ -265,7 +265,7 @@ png_warning_parameter_signed(png_warning_parameters p, int number, int format,
{
png_alloc_size_t u;
png_charp str;
char buffer[PNG_NUMBER_BUFFER_SIZE];
char buffer[PNG_NUMBER_BUFFER_SIZE] = {0};
/* Avoid overflow by doing the negate in a png_alloc_size_t: */
u = (png_alloc_size_t)value;
@ -858,7 +858,7 @@ png_get_error_ptr(png_const_structrp png_ptr)
if (png_ptr == NULL)
return NULL;
return ((png_voidp)png_ptr->error_ptr);
return (png_voidp)png_ptr->error_ptr;
}
@ -933,31 +933,25 @@ png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
#endif
int /* PRIVATE */
png_safe_execute(png_imagep image_in, int (*function)(png_voidp), png_voidp arg)
png_safe_execute(png_imagep image, int (*function)(png_voidp), png_voidp arg)
{
volatile png_imagep image = image_in;
volatile int result;
volatile png_voidp saved_error_buf;
png_voidp saved_error_buf = image->opaque->error_buf;
jmp_buf safe_jmpbuf;
int result;
/* Safely execute function(arg) with png_error returning to this function. */
saved_error_buf = image->opaque->error_buf;
result = setjmp(safe_jmpbuf) == 0;
if (result != 0)
/* Safely execute function(arg), with png_error returning back here. */
if (setjmp(safe_jmpbuf) == 0)
{
image->opaque->error_buf = safe_jmpbuf;
result = function(arg);
image->opaque->error_buf = saved_error_buf;
return result;
}
/* On png_error, return via longjmp, pop the jmpbuf, and free the image. */
image->opaque->error_buf = saved_error_buf;
/* And do the cleanup prior to any failure return. */
if (result == 0)
png_image_free(image);
return result;
png_image_free(image);
return 0;
}
#endif /* SIMPLIFIED READ || SIMPLIFIED_WRITE */
#endif /* READ || WRITE */

245
thirdparty/libpng/pngget.c vendored
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -28,22 +28,22 @@ png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
* valid tRNS chunk in this case.
*/
if (flag == PNG_INFO_tRNS && png_ptr->num_trans == 0)
return(0);
return 0;
#endif
return(info_ptr->valid & flag);
return info_ptr->valid & flag;
}
return(0);
return 0;
}
size_t PNGAPI
png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->rowbytes);
return info_ptr->rowbytes;
return(0);
return 0;
}
#ifdef PNG_INFO_IMAGE_SUPPORTED
@ -51,9 +51,9 @@ png_bytepp PNGAPI
png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->row_pointers);
return info_ptr->row_pointers;
return(0);
return 0;
}
#endif
@ -65,7 +65,7 @@ png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->width;
return (0);
return 0;
}
png_uint_32 PNGAPI
@ -74,7 +74,7 @@ png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->height;
return (0);
return 0;
}
png_byte PNGAPI
@ -83,7 +83,7 @@ png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->bit_depth;
return (0);
return 0;
}
png_byte PNGAPI
@ -92,7 +92,7 @@ png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->color_type;
return (0);
return 0;
}
png_byte PNGAPI
@ -101,7 +101,7 @@ png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->filter_type;
return (0);
return 0;
}
png_byte PNGAPI
@ -110,7 +110,7 @@ png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->interlace_type;
return (0);
return 0;
}
png_byte PNGAPI
@ -119,7 +119,7 @@ png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->compression_type;
return (0);
return 0;
}
png_uint_32 PNGAPI
@ -127,21 +127,20 @@ png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
png_debug(1, "in png_get_x_pixels_per_meter");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function",
"png_get_x_pixels_per_meter");
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
return (info_ptr->x_pixels_per_unit);
}
{
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
return info_ptr->x_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
png_uint_32 PNGAPI
@ -149,42 +148,41 @@ png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
png_debug(1, "in png_get_y_pixels_per_meter");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function",
"png_get_y_pixels_per_meter");
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
return (info_ptr->y_pixels_per_unit);
return info_ptr->y_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
png_uint_32 PNGAPI
png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
png_debug(1, "in png_get_pixels_per_meter");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
return (info_ptr->x_pixels_per_unit);
return info_ptr->x_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
#ifdef PNG_FLOATING_POINT_SUPPORTED
@ -193,21 +191,21 @@ png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
png_debug(1, "in png_get_pixel_aspect_ratio");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
if (info_ptr->x_pixels_per_unit != 0)
return ((float)((float)info_ptr->y_pixels_per_unit
/(float)info_ptr->x_pixels_per_unit));
return (float)info_ptr->y_pixels_per_unit
/ (float)info_ptr->x_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return ((float)0.0);
return (float)0.0;
}
#endif
@ -217,6 +215,8 @@ png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
png_const_inforp info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
png_debug(1, "in png_get_pixel_aspect_ratio_fixed");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0 &&
info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 &&
@ -225,8 +225,6 @@ png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
{
png_fixed_point res;
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
/* The following casts work because a PNG 4 byte integer only has a valid
* range of 0..2^31-1; otherwise the cast might overflow.
*/
@ -247,80 +245,80 @@ png_int_32 PNGAPI
png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
png_debug(1, "in png_get_x_offset_microns");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
return (info_ptr->x_offset);
return info_ptr->x_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
png_int_32 PNGAPI
png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
png_debug(1, "in png_get_y_offset_microns");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
return (info_ptr->y_offset);
return info_ptr->y_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
png_int_32 PNGAPI
png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
png_debug(1, "in png_get_x_offset_pixels");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
return (info_ptr->x_offset);
return info_ptr->x_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
png_int_32 PNGAPI
png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
png_debug(1, "in png_get_y_offset_pixels");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
return (info_ptr->y_offset);
return info_ptr->y_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
return (0);
return 0;
}
#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
@ -434,11 +432,11 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
{
png_uint_32 retval = 0;
png_debug1(1, "in %s retrieval function", "pHYs");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "pHYs");
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@ -464,7 +462,7 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
}
}
return (retval);
return retval;
}
#endif /* pHYs */
#endif /* INCH_CONVERSIONS */
@ -478,9 +476,9 @@ png_byte PNGAPI
png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->channels);
return info_ptr->channels;
return (0);
return 0;
}
#ifdef PNG_READ_SUPPORTED
@ -488,9 +486,9 @@ png_const_bytep PNGAPI
png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->signature);
return info_ptr->signature;
return (NULL);
return NULL;
}
#endif
@ -499,17 +497,17 @@ png_uint_32 PNGAPI
png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
png_color_16p *background)
{
png_debug1(1, "in %s retrieval function", "bKGD");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_bKGD) != 0 &&
background != NULL)
{
png_debug1(1, "in %s retrieval function", "bKGD");
*background = &(info_ptr->background);
return (PNG_INFO_bKGD);
return PNG_INFO_bKGD;
}
return (0);
return 0;
}
#endif
@ -524,6 +522,8 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *white_x, double *white_y, double *red_x, double *red_y,
double *green_x, double *green_y, double *blue_x, double *blue_y)
{
png_debug1(1, "in %s retrieval function", "cHRM");
/* Quiet API change: this code used to only return the end points if a cHRM
* chunk was present, but the end points can also come from iCCP or sRGB
* chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
@ -533,8 +533,6 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
*white_x = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
@ -559,10 +557,10 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (blue_y != NULL)
*blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
"cHRM blue Y");
return (PNG_INFO_cHRM);
return PNG_INFO_cHRM;
}
return (0);
return 0;
}
png_uint_32 PNGAPI
@ -571,11 +569,11 @@ png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
double *blue_Z)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
if (red_X != NULL)
*red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
"cHRM red X");
@ -603,10 +601,10 @@ png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (blue_Z != NULL)
*blue_Z = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
return (PNG_INFO_cHRM);
return PNG_INFO_cHRM;
}
return (0);
return 0;
}
# endif
@ -619,11 +617,11 @@ png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
png_fixed_point *int_blue_Z)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
if (int_red_X != NULL)
*int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
if (int_red_Y != NULL)
@ -642,10 +640,10 @@ png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
if (int_blue_Z != NULL)
*int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
return (PNG_INFO_cHRM);
return PNG_INFO_cHRM;
}
return (0);
return 0;
}
png_uint_32 PNGAPI
@ -675,10 +673,10 @@ png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*blue_x = info_ptr->colorspace.end_points_xy.bluex;
if (blue_y != NULL)
*blue_y = info_ptr->colorspace.end_points_xy.bluey;
return (PNG_INFO_cHRM);
return PNG_INFO_cHRM;
}
return (0);
return 0;
}
# endif
#endif
@ -696,10 +694,10 @@ png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
file_gamma != NULL)
{
*file_gamma = info_ptr->colorspace.gamma;
return (PNG_INFO_gAMA);
return PNG_INFO_gAMA;
}
return (0);
return 0;
}
# endif
@ -716,10 +714,10 @@ png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
{
*file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
"png_get_gAMA");
return (PNG_INFO_gAMA);
return PNG_INFO_gAMA;
}
return (0);
return 0;
}
# endif
#endif
@ -735,10 +733,10 @@ png_get_sRGB(png_const_structrp png_ptr, png_const_inforp info_ptr,
(info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL)
{
*file_srgb_intent = info_ptr->colorspace.rendering_intent;
return (PNG_INFO_sRGB);
return PNG_INFO_sRGB;
}
return (0);
return 0;
}
#endif
@ -762,10 +760,10 @@ png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
*/
if (compression_type != NULL)
*compression_type = PNG_COMPRESSION_TYPE_BASE;
return (PNG_INFO_iCCP);
return PNG_INFO_iCCP;
}
return (0);
return 0;
}
#endif
@ -775,13 +773,15 @@ int PNGAPI
png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr,
png_sPLT_tpp spalettes)
{
png_debug1(1, "in %s retrieval function", "sPLT");
if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
{
*spalettes = info_ptr->splt_palettes;
return info_ptr->splt_palettes_num;
}
return (0);
return 0;
}
#endif
@ -807,10 +807,10 @@ png_get_eXIf_1(png_const_structrp png_ptr, png_const_inforp info_ptr,
{
*num_exif = info_ptr->num_exif;
*exif = info_ptr->exif;
return (PNG_INFO_eXIf);
return PNG_INFO_eXIf;
}
return (0);
return 0;
}
#endif
@ -825,10 +825,10 @@ png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_hIST) != 0 && hist != NULL)
{
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
return PNG_INFO_hIST;
}
return (0);
return 0;
}
#endif
@ -841,7 +841,7 @@ png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_debug1(1, "in %s retrieval function", "IHDR");
if (png_ptr == NULL || info_ptr == NULL)
return (0);
return 0;
if (width != NULL)
*width = info_ptr->width;
@ -873,7 +873,7 @@ png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
info_ptr->compression_type, info_ptr->filter_type);
return (1);
return 1;
}
#ifdef PNG_oFFs_SUPPORTED
@ -890,10 +890,10 @@ png_get_oFFs(png_const_structrp png_ptr, png_const_inforp info_ptr,
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
return (PNG_INFO_oFFs);
return PNG_INFO_oFFs;
}
return (0);
return 0;
}
#endif
@ -917,10 +917,10 @@ png_get_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
*nparams = (int)info_ptr->pcal_nparams;
*units = info_ptr->pcal_units;
*params = info_ptr->pcal_params;
return (PNG_INFO_pCAL);
return PNG_INFO_pCAL;
}
return (0);
return 0;
}
#endif
@ -932,6 +932,8 @@ png_uint_32 PNGAPI
png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, png_fixed_point *width, png_fixed_point *height)
{
png_debug1(1, "in %s retrieval function", "sCAL");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
@ -943,10 +945,10 @@ png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
*height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
"sCAL height");
return (PNG_INFO_sCAL);
return PNG_INFO_sCAL;
}
return(0);
return 0;
}
# endif /* FLOATING_ARITHMETIC */
# endif /* FIXED_POINT */
@ -955,32 +957,36 @@ png_uint_32 PNGAPI
png_get_sCAL(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, double *width, double *height)
{
png_debug1(1, "in %s retrieval function", "sCAL(float)");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
*unit = info_ptr->scal_unit;
*width = atof(info_ptr->scal_s_width);
*height = atof(info_ptr->scal_s_height);
return (PNG_INFO_sCAL);
return PNG_INFO_sCAL;
}
return(0);
return 0;
}
# endif /* FLOATING POINT */
png_uint_32 PNGAPI
png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, png_charpp width, png_charpp height)
{
png_debug1(1, "in %s retrieval function", "sCAL(str)");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_s_width;
*height = info_ptr->scal_s_height;
return (PNG_INFO_sCAL);
return PNG_INFO_sCAL;
}
return(0);
return 0;
}
#endif /* sCAL */
@ -1015,7 +1021,7 @@ png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr,
}
}
return (retval);
return retval;
}
#endif /* pHYs */
@ -1031,10 +1037,10 @@ png_get_PLTE(png_const_structrp png_ptr, png_inforp info_ptr,
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
png_debug1(3, "num_palette = %d", *num_palette);
return (PNG_INFO_PLTE);
return PNG_INFO_PLTE;
}
return (0);
return 0;
}
#ifdef PNG_sBIT_SUPPORTED
@ -1048,10 +1054,10 @@ png_get_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_sBIT) != 0 && sig_bit != NULL)
{
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
return PNG_INFO_sBIT;
}
return (0);
return 0;
}
#endif
@ -1062,7 +1068,7 @@ png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
{
if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
{
png_debug1(1, "in 0x%lx retrieval function",
png_debug1(1, "in text retrieval function, chunk typeid = 0x%lx",
(unsigned long)png_ptr->chunk_name);
if (text_ptr != NULL)
@ -1077,7 +1083,7 @@ png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
if (num_text != NULL)
*num_text = 0;
return(0);
return 0;
}
#endif
@ -1092,10 +1098,10 @@ png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_tIME) != 0 && mod_time != NULL)
{
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_tIME);
return PNG_INFO_tIME;
}
return (0);
return 0;
}
#endif
@ -1105,11 +1111,12 @@ png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
{
png_uint_32 retval = 0;
png_debug1(1, "in %s retrieval function", "tRNS");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_tRNS) != 0)
{
png_debug1(1, "in %s retrieval function", "tRNS");
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (trans_alpha != NULL)
@ -1141,7 +1148,7 @@ png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
}
}
return (retval);
return retval;
}
#endif
@ -1156,7 +1163,7 @@ png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
return info_ptr->unknown_chunks_num;
}
return (0);
return 0;
}
#endif
@ -1252,7 +1259,7 @@ png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return png_ptr->num_palette_max;
return (-1);
return -1;
}
# endif
#endif

9
thirdparty/libpng/pnglibconf.h vendored
View File

@ -1,8 +1,8 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.40 */
/* libpng version 1.6.43 */
/* Copyright (c) 2018-2023 Cosmin Truta */
/* Copyright (c) 2018-2024 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */
@ -27,6 +27,7 @@
#define PNG_COLORSPACE_SUPPORTED
#define PNG_CONSOLE_IO_SUPPORTED
#define PNG_CONVERT_tIME_SUPPORTED
/*#undef PNG_DISABLE_ADLER32_CHECK_SUPPORTED*/
#define PNG_EASY_ACCESS_SUPPORTED
/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
#define PNG_ERROR_TEXT_SUPPORTED
@ -41,6 +42,10 @@
#define PNG_INCH_CONVERSIONS_SUPPORTED
#define PNG_INFO_IMAGE_SUPPORTED
#define PNG_IO_STATE_SUPPORTED
/*#undef PNG_MIPS_MMI_API_SUPPORTED*/
/*#undef PNG_MIPS_MMI_CHECK_SUPPORTED*/
/*#undef PNG_MIPS_MSA_API_SUPPORTED*/
/*#undef PNG_MIPS_MSA_CHECK_SUPPORTED*/
#define PNG_MNG_FEATURES_SUPPORTED
#define PNG_POINTER_INDEXING_SUPPORTED
/*#undef PNG_POWERPC_VSX_API_SUPPORTED*/

16
thirdparty/libpng/pngpread.c vendored
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -145,10 +145,10 @@ png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
num_to_check);
png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0)
{
if (num_checked < 4 &&
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4) != 0)
png_error(png_ptr, "Not a PNG file");
else
@ -294,6 +294,14 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
#ifdef PNG_READ_eXIf_SUPPORTED
else if (png_ptr->chunk_name == png_eXIf)
{
PNG_PUSH_SAVE_BUFFER_IF_FULL
png_handle_eXIf(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
else if (chunk_name == png_sRGB)
@ -1089,7 +1097,7 @@ png_voidp PNGAPI
png_get_progressive_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
return NULL;
return png_ptr->io_ptr;
}

118
thirdparty/libpng/pngpriv.h vendored
View File

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -36,7 +36,7 @@
* still required (as of 2011-05-02.)
*/
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
# define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
#endif
#ifndef PNG_VERSION_INFO_ONLY
@ -190,13 +190,27 @@
#endif /* PNG_ARM_NEON_OPT > 0 */
#ifndef PNG_MIPS_MSA_OPT
# if defined(__mips_msa) && (__mips_isa_rev >= 5) && defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# if defined(__mips_msa) && (__mips_isa_rev >= 5) && \
defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_MIPS_MSA_OPT 2
# else
# define PNG_MIPS_MSA_OPT 0
# endif
#endif
#ifndef PNG_MIPS_MMI_OPT
# ifdef PNG_MIPS_MMI
# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64) && \
defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_MIPS_MMI_OPT 1
# else
# define PNG_MIPS_MMI_OPT 0
# endif
# else
# define PNG_MIPS_MMI_OPT 0
# endif
#endif
#ifndef PNG_POWERPC_VSX_OPT
# if defined(__PPC64__) && defined(__ALTIVEC__) && defined(__VSX__)
# define PNG_POWERPC_VSX_OPT 2
@ -205,13 +219,21 @@
# endif
#endif
#ifndef PNG_LOONGARCH_LSX_OPT
# if defined(__loongarch_sx)
# define PNG_LOONGARCH_LSX_OPT 1
# else
# define PNG_LOONGARCH_LSX_OPT 0
# endif
#endif
#ifndef PNG_INTEL_SSE_OPT
# ifdef PNG_INTEL_SSE
/* Only check for SSE if the build configuration has been modified to
* enable SSE optimizations. This means that these optimizations will
* be off by default. See contrib/intel for more details.
*/
# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
(defined(_M_IX86_FP) && _M_IX86_FP >= 2)
# define PNG_INTEL_SSE_OPT 1
@ -248,7 +270,6 @@
#endif
#if PNG_MIPS_MSA_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# if defined(__mips_msa)
# if defined(__clang__)
@ -264,11 +285,28 @@
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# define PNG_MIPS_MSA_IMPLEMENTATION 1
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
# endif
#else
# define PNG_MIPS_MSA_IMPLEMENTATION 0
#endif /* PNG_MIPS_MSA_OPT > 0 */
#if PNG_MIPS_MMI_OPT > 0
# ifndef PNG_MIPS_MMI_IMPLEMENTATION
# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64)
# define PNG_MIPS_MMI_IMPLEMENTATION 2
# else /* !defined __mips_loongson_mmi || _MIPS_SIM != _ABI64 */
# define PNG_MIPS_MMI_IMPLEMENTATION 0
# endif /* __mips_loongson_mmi && _MIPS_SIM == _ABI64 */
# endif /* !PNG_MIPS_MMI_IMPLEMENTATION */
# if PNG_MIPS_MMI_IMPLEMENTATION > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
# endif
#else
# define PNG_MIPS_MMI_IMPLEMENTATION 0
#endif /* PNG_MIPS_MMI_OPT > 0 */
#if PNG_POWERPC_VSX_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_vsx
# define PNG_POWERPC_VSX_IMPLEMENTATION 1
@ -276,6 +314,12 @@
# define PNG_POWERPC_VSX_IMPLEMENTATION 0
#endif
#if PNG_LOONGARCH_LSX_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_lsx
# define PNG_LOONGARCH_LSX_IMPLEMENTATION 1
#else
# define PNG_LOONGARCH_LSX_IMPLEMENTATION 0
#endif
/* Is this a build of a DLL where compilation of the object modules requires
* different preprocessor settings to those required for a simple library? If
@ -514,18 +558,8 @@
*/
# include <float.h>
# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
*/
# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
# include <fp.h>
# endif
# else
# include <math.h>
# endif
# include <math.h>
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
@ -1306,7 +1340,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_MIPS_MSA_OPT > 0
#if PNG_MIPS_MSA_IMPLEMENTATION == 1
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_msa,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_msa,(png_row_infop
@ -1323,6 +1357,23 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_MIPS_MMI_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_mmi,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_mmi,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_POWERPC_VSX_OPT > 0
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_vsx,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
@ -1355,6 +1406,23 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
#if PNG_LOONGARCH_LSX_IMPLEMENTATION == 1
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_lsx,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
/* Choose the best filter to use and filter the row data */
PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
png_row_infop row_info),PNG_EMPTY);
@ -2094,17 +2162,27 @@ PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
#if PNG_MIPS_MSA_OPT > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa,
#if PNG_MIPS_MSA_IMPLEMENTATION == 1
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
# if PNG_MIPS_MMI_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
# endif
# if PNG_INTEL_SSE_IMPLEMENTATION > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
# endif
#endif
#if PNG_LOONGARCH_LSX_OPT > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_lsx,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,
png_const_charp key, png_bytep new_key), PNG_EMPTY);

12
thirdparty/libpng/pngread.c vendored
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -568,7 +568,11 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
#endif
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
if (png_ptr->transformations)
if (png_ptr->transformations
# ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
|| png_ptr->num_palette_max >= 0
# endif
)
png_do_read_transformations(png_ptr, &row_info);
#endif
@ -785,7 +789,7 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
/* Report invalid palette index; added at libng-1.5.10 */
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
png_ptr->num_palette_max > png_ptr->num_palette)
png_ptr->num_palette_max >= png_ptr->num_palette)
png_benign_error(png_ptr, "Read palette index exceeding num_palette");
#endif
@ -1049,6 +1053,8 @@ void PNGAPI
png_read_png(png_structrp png_ptr, png_inforp info_ptr,
int transforms, voidp params)
{
png_debug(1, "in png_read_png");
if (png_ptr == NULL || info_ptr == NULL)
return;

34
thirdparty/libpng/pngrtran.c vendored
View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -290,21 +290,20 @@ png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
int compose = 0;
png_fixed_point file_gamma;
png_debug(1, "in png_set_alpha_mode");
png_debug(1, "in png_set_alpha_mode_fixed");
if (png_rtran_ok(png_ptr, 0) == 0)
return;
output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
/* Validate the value to ensure it is in a reasonable range. The value
/* Validate the value to ensure it is in a reasonable range. The value
* is expected to be 1 or greater, but this range test allows for some
* viewing correction values. The intent is to weed out users of this API
* who use the inverse of the gamma value accidentally! Since some of these
* values are reasonable this may have to be changed:
* viewing correction values. The intent is to weed out the API users
* who might use the inverse of the gamma value accidentally!
*
* 1.6.x: changed from 0.07..3 to 0.01..100 (to accommodate the optimal 16-bit
* gamma of 36, and its reciprocal.)
* In libpng 1.6.0, we changed from 0.07..3 to 0.01..100, to accommodate
* the optimal 16-bit gamma of 36 and its reciprocal.
*/
if (output_gamma < 1000 || output_gamma > 10000000)
png_error(png_ptr, "output gamma out of expected range");
@ -441,7 +440,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
int i;
png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
(png_alloc_size_t)((png_uint_32)num_palette * (sizeof (png_byte))));
(png_alloc_size_t)num_palette);
for (i = 0; i < num_palette; i++)
png_ptr->quantize_index[i] = (png_byte)i;
}
@ -458,7 +457,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
/* Initialize an array to sort colors */
png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
(png_alloc_size_t)((png_uint_32)num_palette * (sizeof (png_byte))));
(png_alloc_size_t)num_palette);
/* Initialize the quantize_sort array */
for (i = 0; i < num_palette; i++)
@ -592,11 +591,9 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
/* Initialize palette index arrays */
png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
(png_alloc_size_t)((png_uint_32)num_palette *
(sizeof (png_byte))));
(png_alloc_size_t)num_palette);
png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
(png_alloc_size_t)((png_uint_32)num_palette *
(sizeof (png_byte))));
(png_alloc_size_t)num_palette);
/* Initialize the sort array */
for (i = 0; i < num_palette; i++)
@ -761,12 +758,11 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
size_t num_entries = ((size_t)1 << total_bits);
png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr,
(png_alloc_size_t)(num_entries * (sizeof (png_byte))));
(png_alloc_size_t)(num_entries));
distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)(num_entries *
(sizeof (png_byte))));
distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)num_entries);
memset(distance, 0xff, num_entries * (sizeof (png_byte)));
memset(distance, 0xff, num_entries);
for (i = 0; i < num_palette; i++)
{
@ -970,7 +966,7 @@ void PNGFAPI
png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
png_fixed_point red, png_fixed_point green)
{
png_debug(1, "in png_set_rgb_to_gray");
png_debug(1, "in png_set_rgb_to_gray_fixed");
/* Need the IHDR here because of the check on color_type below. */
/* TODO: fix this */

19
thirdparty/libpng/pngrutil.c vendored
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -26,7 +26,7 @@ png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf)
if (uval > PNG_UINT_31_MAX)
png_error(png_ptr, "PNG unsigned integer out of range");
return (uval);
return uval;
}
#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
@ -140,7 +140,7 @@ png_read_sig(png_structrp png_ptr, png_inforp info_ptr)
if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0)
{
if (num_checked < 4 &&
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4) != 0)
png_error(png_ptr, "Not a PNG file");
else
png_error(png_ptr, "PNG file corrupted by ASCII conversion");
@ -171,7 +171,7 @@ png_read_chunk_header(png_structrp png_ptr)
/* Put the chunk name into png_ptr->chunk_name. */
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
png_debug2(0, "Reading %lx chunk, length = %lu",
png_debug2(0, "Reading chunk typeid = 0x%lx, length = %lu",
(unsigned long)png_ptr->chunk_name, (unsigned long)length);
/* Reset the crc and run it over the chunk name. */
@ -238,10 +238,10 @@ png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
else
png_chunk_error(png_ptr, "CRC error");
return (1);
return 1;
}
return (0);
return 0;
}
/* Compare the CRC stored in the PNG file with that calculated by libpng from
@ -277,11 +277,11 @@ png_crc_error(png_structrp png_ptr)
if (need_crc != 0)
{
crc = png_get_uint_32(crc_bytes);
return ((int)(crc != png_ptr->crc));
return crc != png_ptr->crc;
}
else
return (0);
return 0;
}
#if defined(PNG_READ_iCCP_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) ||\
@ -421,8 +421,7 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
}
#if ZLIB_VERNUM >= 0x1290 && \
defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_IGNORE_ADLER32)
#ifdef PNG_DISABLE_ADLER32_CHECK_SUPPORTED
if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON)
/* Turn off validation of the ADLER32 checksum in IDAT chunks */
ret = inflateValidate(&png_ptr->zstream, 0);

22
thirdparty/libpng/pngset.c vendored
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -763,11 +763,11 @@ 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 ? 0xabadca11U :
(unsigned long)png_ptr->chunk_name);
png_debug1(1, "in text storage function, chunk typeid = 0x%lx",
png_ptr == NULL ? 0xabadca11UL : (unsigned long)png_ptr->chunk_name);
if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
return(0);
return 0;
/* Make sure we have enough space in the "text" array in info_struct
* to hold all of the incoming text_ptr objects. This compare can't overflow
@ -947,7 +947,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
}
return(0);
return 0;
}
#endif
@ -1063,6 +1063,8 @@ png_set_sPLT(png_const_structrp png_ptr,
{
png_sPLT_tp np;
png_debug1(1, "in %s storage function", "sPLT");
if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || entries == NULL)
return;
@ -1537,7 +1539,7 @@ void PNGAPI
png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytepp row_pointers)
{
png_debug1(1, "in %s storage function", "rows");
png_debug(1, "in png_set_rows");
if (png_ptr == NULL || info_ptr == NULL)
return;
@ -1556,6 +1558,8 @@ png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
void PNGAPI
png_set_compression_buffer_size(png_structrp png_ptr, size_t size)
{
png_debug(1, "in png_set_compression_buffer_size");
if (png_ptr == NULL)
return;
@ -1627,6 +1631,8 @@ void PNGAPI
png_set_user_limits(png_structrp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
png_debug(1, "in png_set_user_limits");
/* 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 0x7fffffff.
@ -1642,6 +1648,8 @@ png_set_user_limits(png_structrp png_ptr, png_uint_32 user_width_max,
void PNGAPI
png_set_chunk_cache_max(png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
{
png_debug(1, "in png_set_chunk_cache_max");
if (png_ptr != NULL)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
}
@ -1651,6 +1659,8 @@ void PNGAPI
png_set_chunk_malloc_max(png_structrp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
png_debug(1, "in png_set_chunk_malloc_max");
if (png_ptr != NULL)
png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
}

14
thirdparty/libpng/pngtrans.c vendored
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -103,10 +103,10 @@ png_set_interlace_handling(png_structrp png_ptr)
if (png_ptr != 0 && png_ptr->interlaced != 0)
{
png_ptr->transformations |= PNG_INTERLACE;
return (7);
return 7;
}
return (1);
return 1;
}
#endif
@ -498,6 +498,8 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
png_bytep dp = row; /* destination pointer */
png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
png_debug(1, "in png_do_strip_channel");
/* At the start sp will point to the first byte to copy and dp to where
* it is copied to. ep always points just beyond the end of the row, so
* the loop simply copies (channels-1) channels until sp reaches ep.
@ -698,6 +700,8 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
void /* PRIVATE */
png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
{
png_debug(1, "in png_do_check_palette_indexes");
if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */
{
@ -708,7 +712,7 @@ png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
* forms produced on either GCC or MSVC.
*/
int padding = PNG_PADBITS(row_info->pixel_depth, row_info->width);
png_bytep rp = png_ptr->row_buf + row_info->rowbytes - 1;
png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
switch (row_info->bit_depth)
{
@ -833,7 +837,7 @@ png_voidp PNGAPI
png_get_user_transform_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
return NULL;
return png_ptr->user_transform_ptr;
}

19
thirdparty/libpng/pngwrite.c vendored
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -369,7 +369,8 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
png_error(png_ptr, "No IDATs written into file");
#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
if (png_ptr->num_palette_max > png_ptr->num_palette)
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
png_ptr->num_palette_max >= png_ptr->num_palette)
png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
#endif
@ -714,12 +715,12 @@ png_write_row(png_structrp png_ptr, png_const_bytep row)
/* 1.5.6: moved from png_struct to be a local structure: */
png_row_info row_info;
if (png_ptr == NULL)
return;
png_debug2(1, "in png_write_row (row %u, pass %d)",
png_ptr->row_number, png_ptr->pass);
if (png_ptr == NULL)
return;
/* Initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
@ -1210,6 +1211,8 @@ png_set_compression_strategy(png_structrp png_ptr, int strategy)
void PNGAPI
png_set_compression_window_bits(png_structrp png_ptr, int window_bits)
{
png_debug(1, "in png_set_compression_window_bits");
if (png_ptr == NULL)
return;
@ -1293,6 +1296,8 @@ png_set_text_compression_strategy(png_structrp png_ptr, int strategy)
void PNGAPI
png_set_text_compression_window_bits(png_structrp png_ptr, int window_bits)
{
png_debug(1, "in png_set_text_compression_window_bits");
if (png_ptr == NULL)
return;
@ -1330,6 +1335,8 @@ png_set_text_compression_method(png_structrp png_ptr, int method)
void PNGAPI
png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn)
{
png_debug(1, "in png_set_write_status_fn");
if (png_ptr == NULL)
return;
@ -1357,6 +1364,8 @@ void PNGAPI
png_write_png(png_structrp png_ptr, png_inforp info_ptr,
int transforms, voidp params)
{
png_debug(1, "in png_write_png");
if (png_ptr == NULL || info_ptr == NULL)
return;

10
thirdparty/libpng/pngwutil.c vendored
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -2311,7 +2311,7 @@ png_setup_sub_row(png_structrp png_ptr, png_uint_32 bpp,
break;
}
return (sum);
return sum;
}
static void /* PRIVATE */
@ -2361,7 +2361,7 @@ png_setup_up_row(png_structrp png_ptr, size_t row_bytes, size_t lmins)
break;
}
return (sum);
return sum;
}
static void /* PRIVATE */
png_setup_up_row_only(png_structrp png_ptr, size_t row_bytes)
@ -2417,7 +2417,7 @@ png_setup_avg_row(png_structrp png_ptr, png_uint_32 bpp,
break;
}
return (sum);
return sum;
}
static void /* PRIVATE */
png_setup_avg_row_only(png_structrp png_ptr, png_uint_32 bpp,
@ -2500,7 +2500,7 @@ png_setup_paeth_row(png_structrp png_ptr, png_uint_32 bpp,
break;
}
return (sum);
return sum;
}
static void /* PRIVATE */
png_setup_paeth_row_only(png_structrp png_ptr, png_uint_32 bpp,