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[CHG] Now using libpng 1.4.0 (for more info: http://www.libpng.org/pub/png/src/libpng-1.2.x-to-1.4.x-summary.txt)

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This commit is contained in:
Crayon2000 2010-01-18 05:45:08 +00:00
parent 1012d5a101
commit 1e066f3877
20 changed files with 2126 additions and 3541 deletions
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205
GRRLIB/lib/png/png.c
View file

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.2.42 [January 3, 2010]
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -11,82 +11,18 @@
* and license in png.h
*/
#define PNG_INTERNAL
#define PNG_NO_EXTERN
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_42 Your_png_h_is_not_version_1_2_42;
typedef version_1_4_0 Your_png_h_is_not_version_1_4_0;
/* Version information for C files. This had better match the version
* string defined in png.h.
*/
#ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */
PNG_CONST char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING;
#ifdef PNG_READ_SUPPORTED
/* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */
PNG_CONST png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
#endif /* PNG_READ_SUPPORTED */
/* Invoke global declarations for constant strings for known chunk types */
PNG_IHDR;
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
PNG_bKGD;
PNG_cHRM;
PNG_gAMA;
PNG_hIST;
PNG_iCCP;
PNG_iTXt;
PNG_oFFs;
PNG_pCAL;
PNG_sCAL;
PNG_pHYs;
PNG_sBIT;
PNG_sPLT;
PNG_sRGB;
PNG_tEXt;
PNG_tIME;
PNG_tRNS;
PNG_zTXt;
#ifdef PNG_READ_SUPPORTED
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
/* Height of interlace block. This is not currently used - if you need
* it, uncomment it here and in png.h
PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
*/
/* Mask to determine which pixels are valid in a pass */
PNG_CONST int FARDATA png_pass_mask[] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
/* Mask to determine which pixels to overwrite while displaying */
PNG_CONST int FARDATA png_pass_dsp_mask[]
= {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
#endif /* PNG_READ_SUPPORTED */
#endif /* PNG_USE_GLOBAL_ARRAYS */
/* 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
* stream we can set num_bytes = 8 so that libpng will not attempt to read
@ -103,7 +39,7 @@ png_set_sig_bytes(png_structp png_ptr, int num_bytes)
return;
if (num_bytes > 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);
}
@ -134,32 +70,17 @@ png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
return ((int)(png_memcmp(&sig[start], &png_signature[start], num_to_check)));
}
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* (Obsolete) function to check signature bytes. It does not allow one
* to check a partial signature. This function might be removed in the
* future - use png_sig_cmp(). Returns true (nonzero) if the file is PNG.
*/
int PNGAPI
png_check_sig(png_bytep sig, int num)
{
return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num));
}
#endif
#endif /* PNG_READ_SUPPORTED */
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
/* Function to allocate memory for zlib and clear it to 0. */
#ifdef PNG_1_0_X
voidpf PNGAPI
#else
voidpf /* PRIVATE */
#endif
png_zalloc(voidpf png_ptr, uInt items, uInt size)
{
png_voidp ptr;
png_structp p=(png_structp)png_ptr;
png_uint_32 save_flags=p->flags;
png_uint_32 num_bytes;
png_alloc_size_t num_bytes;
if (png_ptr == NULL)
return (NULL);
@ -168,36 +89,17 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
png_warning (p, "Potential overflow in png_zalloc()");
return (NULL);
}
num_bytes = (png_uint_32)items * size;
num_bytes = (png_alloc_size_t)items * size;
p->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
ptr = (png_voidp)png_malloc((png_structp)png_ptr, num_bytes);
p->flags=save_flags;
#if defined(PNG_1_0_X) && !defined(PNG_NO_ZALLOC_ZERO)
if (ptr == NULL)
return ((voidpf)ptr);
if (num_bytes > (png_uint_32)0x8000L)
{
png_memset(ptr, 0, (png_size_t)0x8000L);
png_memset((png_bytep)ptr + (png_size_t)0x8000L, 0,
(png_size_t)(num_bytes - (png_uint_32)0x8000L));
}
else
{
png_memset(ptr, 0, (png_size_t)num_bytes);
}
#endif
return ((voidpf)ptr);
}
/* Function to free memory for zlib */
#ifdef PNG_1_0_X
void PNGAPI
#else
void /* PRIVATE */
#endif
png_zfree(voidpf png_ptr, voidpf ptr)
{
png_free((png_structp)png_ptr, (png_voidp)ptr);
@ -302,15 +204,6 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
* and applications using it are urged to use png_create_info_struct()
* instead.
*/
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
#undef png_info_init
void PNGAPI
png_info_init(png_infop info_ptr)
{
/* We only come here via pre-1.0.12-compiled applications */
png_info_init_3(&info_ptr, 0);
}
#endif
void PNGAPI
png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
@ -333,7 +226,6 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
png_memset(info_ptr, 0, png_sizeof(png_info));
}
#ifdef PNG_FREE_ME_SUPPORTED
void PNGAPI
png_data_freer(png_structp png_ptr, png_infop info_ptr,
int freer, png_uint_32 mask)
@ -349,9 +241,8 @@ png_data_freer(png_structp png_ptr, png_infop info_ptr,
info_ptr->free_me &= ~mask;
else
png_warning(png_ptr,
"Unknown freer parameter in png_data_freer.");
"Unknown freer parameter in png_data_freer");
}
#endif
void PNGAPI
png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
@ -364,11 +255,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_TEXT_SUPPORTED
/* Free text item num or (if num == -1) all text items */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
#else
if (mask & PNG_FREE_TEXT)
#endif
{
if (num != -1)
{
@ -392,28 +279,17 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_tRNS_SUPPORTED
/* Free any tRNS entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
#else
if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
#endif
{
png_free(png_ptr, info_ptr->trans);
info_ptr->trans = NULL;
png_free(png_ptr, info_ptr->trans_alpha);
info_ptr->trans_alpha = NULL;
info_ptr->valid &= ~PNG_INFO_tRNS;
#ifndef PNG_FREE_ME_SUPPORTED
png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
#endif
}
#endif
#ifdef PNG_sCAL_SUPPORTED
/* Free any sCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
#else
if (mask & PNG_FREE_SCAL)
#endif
{
#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
png_free(png_ptr, info_ptr->scal_s_width);
@ -427,11 +303,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_pCAL_SUPPORTED
/* Free any pCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
#else
if (mask & PNG_FREE_PCAL)
#endif
{
png_free(png_ptr, info_ptr->pcal_purpose);
png_free(png_ptr, info_ptr->pcal_units);
@ -454,11 +326,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_iCCP_SUPPORTED
/* Free any iCCP entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
#else
if (mask & PNG_FREE_ICCP)
#endif
{
png_free(png_ptr, info_ptr->iccp_name);
png_free(png_ptr, info_ptr->iccp_profile);
@ -470,11 +338,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_sPLT_SUPPORTED
/* Free a given sPLT entry, or (if num == -1) all sPLT entries */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
#else
if (mask & PNG_FREE_SPLT)
#endif
{
if (num != -1)
{
@ -510,11 +374,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
png_ptr->unknown_chunk.data = NULL;
}
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
#else
if (mask & PNG_FREE_UNKN)
#endif
{
if (num != -1)
{
@ -543,44 +403,26 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
#ifdef PNG_hIST_SUPPORTED
/* Free any hIST entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
#else
if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
#endif
{
png_free(png_ptr, info_ptr->hist);
info_ptr->hist = NULL;
info_ptr->valid &= ~PNG_INFO_hIST;
#ifndef PNG_FREE_ME_SUPPORTED
png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
#endif
}
#endif
/* Free any PLTE entry that was internally allocated */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
#else
if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
#endif
{
png_zfree(png_ptr, info_ptr->palette);
info_ptr->palette = NULL;
info_ptr->valid &= ~PNG_INFO_PLTE;
#ifndef PNG_FREE_ME_SUPPORTED
png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
#endif
info_ptr->num_palette = 0;
}
#ifdef PNG_INFO_IMAGE_SUPPORTED
/* Free any image bits attached to the info structure */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
#else
if (mask & PNG_FREE_ROWS)
#endif
{
if (info_ptr->row_pointers)
{
@ -597,12 +439,10 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#ifdef PNG_FREE_ME_SUPPORTED
if (num == -1)
info_ptr->free_me &= ~mask;
else
info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
#endif
}
/* This is an internal routine to free any memory that the info struct is
@ -680,17 +520,6 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
png_sizeof(char)));
}
#ifdef _WIN32_WCE
{
wchar_t time_buf[29];
wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
ptime->day % 32, short_months[(ptime->month - 1) % 12],
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 29,
NULL, NULL);
}
#else
#ifdef USE_FAR_KEYWORD
{
char near_time_buf[29];
@ -707,7 +536,6 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
#endif
#endif /* _WIN32_WCE */
return ((png_charp)png_ptr->time_buffer);
}
#endif /* PNG_TIME_RFC1123_SUPPORTED */
@ -723,13 +551,13 @@ png_get_copyright(png_structp png_ptr)
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
"libpng version 1.2.42 - January 3, 2010" PNG_STRING_NEWLINE \
"libpng version 1.4.0 - January 3, 2010" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2010 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 ((png_charp) "libpng version 1.2.42 - January 3, 2010\
return ((png_charp) "libpng version 1.4.0 - January 3, 2010\
Copyright (c) 1998-2010 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@ -814,17 +642,6 @@ png_access_version_number(void)
}
#if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
#ifndef PNG_1_0_X
/* This function was added to libpng 1.2.0 */
int PNGAPI
png_mmx_support(void)
{
/* Obsolete, to be removed from libpng-1.4.0 */
return -1;
}
#endif /* PNG_1_0_X */
#endif /* PNG_READ_SUPPORTED && PNG_ASSEMBLER_CODE_SUPPORTED */
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#ifdef PNG_SIZE_T

1641
GRRLIB/lib/png/png.h
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File diff suppressed because it is too large Load diff

535
GRRLIB/lib/png/pngconf.h
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@ -1,7 +1,8 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.2.42 - January 3, 2010
* libpng version 1.4.0 - January 3, 2010
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,6 +10,7 @@
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*
*/
/* Any machine specific code is near the front of this file, so if you
@ -20,9 +22,22 @@
#ifndef PNGCONF_H
#define PNGCONF_H
#define PNG_1_2_X
#ifndef PNG_NO_LIMITS_H
# include <limits.h>
#endif
/* Added at libpng-1.2.9 */
/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
#ifdef PNG_CONFIGURE_LIBPNG
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
#endif
/*
* Added at libpng-1.2.8
*
* PNG_USER_CONFIG has to be defined on the compiler command line. This
* includes the resource compiler for Windows DLL configurations.
*/
@ -33,16 +48,7 @@
# include "pngusr.h"
#endif
/* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
#ifdef PNG_CONFIGURE_LIBPNG
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#endif
/*
* Added at libpng-1.2.8
*
* If you create a private DLL you need to define in "pngusr.h" the followings:
* #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
* the DLL was built>
@ -74,17 +80,9 @@
# endif
#endif /* __STDC__ */
#ifndef PNG_VERSION_INFO_ONLY
/* End of material added to libpng-1.2.8 */
/* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
Restored at libpng-1.2.21 */
#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
!defined(PNG_WARN_UNINITIALIZED_ROW)
# define PNG_WARN_UNINITIALIZED_ROW 1
#endif
/* End of material added at libpng-1.2.19/1.2.21 */
#ifndef PNG_VERSION_INFO_ONLY
/* This is the size of the compression buffer, and thus the size of
* an IDAT chunk. Make this whatever size you feel is best for your
@ -115,7 +113,7 @@
# define PNG_WRITE_SUPPORTED
#endif
/* Enabled in 1.2.41. */
/* Enabled in 1.4.0. */
#ifdef PNG_ALLOW_BENIGN_ERRORS
# define png_benign_error png_warning
# define png_chunk_benign_error png_chunk_warning
@ -126,34 +124,46 @@
# endif
#endif
/* Added in libpng-1.2.41 */
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
# define PNG_WARNINGS_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
# define PNG_ERROR_TEXT_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
# define PNG_CHECK_cHRM_SUPPORTED
#endif
/* Added at libpng version 1.4.0 */
#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_ALIGNED_MEMORY_SUPPORTED
#endif
/* Enabled by default in 1.2.0. You can disable this if you don't need to
* support PNGs that are embedded in MNG datastreams
*/
#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
support PNGs that are embedded in MNG datastreams */
#ifndef PNG_NO_MNG_FEATURES
# ifndef PNG_MNG_FEATURES_SUPPORTED
# define PNG_MNG_FEATURES_SUPPORTED
# endif
#endif
/* Added at libpng version 1.4.0 */
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
# ifndef PNG_FLOATING_POINT_SUPPORTED
# define PNG_FLOATING_POINT_SUPPORTED
# endif
#endif
/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
in libpng and png_calloc() is always present)
*/
#define PNG_CALLOC_SUPPORTED
/* If you are running on a machine where you cannot allocate more
* than 64K of memory at once, uncomment this. While libpng will not
* normally need that much memory in a chunk (unless you load up a very
@ -197,7 +207,7 @@
* we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
* to __declspec() stuff. However, we DO need to worry about
* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
* such as CONSOLE_IO.
*/
#ifdef __CYGWIN__
# ifdef ALL_STATIC
@ -261,24 +271,12 @@
# define PNG_STDIO_SUPPORTED
#endif
#ifdef _WIN32_WCE
# include <windows.h>
/* Console I/O functions are not supported on WindowsCE */
# define PNG_NO_CONSOLE_IO
/* abort() may not be supported on some/all Windows CE platforms */
# define PNG_ABORT() exit(-1)
# ifdef PNG_DEBUG
# undef PNG_DEBUG
# endif
#endif
#ifdef PNG_BUILD_DLL
# ifndef PNG_CONSOLE_IO_SUPPORTED
# ifndef PNG_NO_CONSOLE_IO
# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
# define PNG_NO_CONSOLE_IO
# endif
#endif
#endif
# ifdef PNG_NO_STDIO
# ifndef PNG_NO_CONSOLE_IO
@ -290,11 +288,8 @@
# endif
# endif
# else
# ifndef _WIN32_WCE
/* "stdio.h" functions are not supported on WindowsCE */
# include <stdio.h>
# endif
# endif
#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
# define PNG_CONSOLE_IO_SUPPORTED
@ -315,14 +310,10 @@
#ifdef _NO_PROTO
# define PNGARG(arglist) ()
# ifndef PNG_TYPECAST_NULL
# define PNG_TYPECAST_NULL
# endif
#else
# define PNGARG(arglist) arglist
#endif /* _NO_PROTO */
#endif /* OF */
#endif /* PNGARG */
@ -338,12 +329,14 @@
# endif
#endif
/* enough people need this for various reasons to include it here */
#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
/* Enough people need this for various reasons to include it here */
#if !defined(MACOS) && !defined(RISCOS)
# include <sys/types.h>
#endif
#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
#if !defined(PNG_NO_SETJMP) && \
!defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
# define PNG_SETJMP_SUPPORTED
#endif
@ -374,14 +367,15 @@
# endif /* __linux__ */
# endif /* PNG_SKIP_SETJMP_CHECK */
/* include setjmp.h for error handling */
/* Include setjmp.h for error handling */
# include <setjmp.h>
# ifdef __linux__
# ifdef PNG_SAVE_BSD_SOURCE
# ifndef _BSD_SOURCE
# define _BSD_SOURCE
# ifdef _BSD_SOURCE
# undef _BSD_SOURCE
# endif
# define _BSD_SOURCE
# undef PNG_SAVE_BSD_SOURCE
# endif
# endif /* __linux__ */
@ -394,59 +388,6 @@
#endif
/* Other defines for things like memory and the like can go here. */
#ifdef PNG_INTERNAL
#include <stdlib.h>
/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
* aren't usually used outside the library (as far as I know), so it is
* debatable if they should be exported at all. In the future, when it is
* possible to have run-time registry of chunk-handling functions, some of
* these will be made available again.
#define PNG_EXTERN extern
*/
#define PNG_EXTERN
/* Other defines specific to compilers can go here. Try to keep
* them inside an appropriate ifdef/endif pair for portability.
*/
#ifdef PNG_FLOATING_POINT_SUPPORTED
# ifdef MACOS
/* 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
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
# include <m68881.h>
# endif
#endif
/* Codewarrior on NT has linking problems without this. */
#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
# define PNG_ALWAYS_EXTERN
#endif
/* This provides the non-ANSI (far) memory allocation routines. */
#if defined(__TURBOC__) && defined(__MSDOS__)
# include <mem.h>
# include <alloc.h>
#endif
/* I have no idea why is this necessary... */
#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
# include <malloc.h>
#endif
/* This controls how fine the dithering gets. As this allocates
* a largish chunk of memory (32K), those who are not as concerned
@ -480,18 +421,18 @@
# define PNG_GAMMA_THRESHOLD 0.05
#endif
#endif /* PNG_INTERNAL */
/* The following uses const char * instead of char * for error
* and warning message functions, so some compilers won't complain.
* If you do not want to use const, define PNG_NO_CONST here.
*/
#ifndef PNG_CONST
# ifndef PNG_NO_CONST
# define PNG_CONST const
# else
# define PNG_CONST
# endif
#endif
/* The following defines give you the ability to remove code from the
* library that you will not be using. I wish I could figure out how to
@ -510,85 +451,25 @@
/* Any features you will not be using can be undef'ed here */
/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
* to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
* on the compile line, then pick and choose which ones to define without
* having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
* to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
* then pick and choose which ones to define without having to edit this
* file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
* if you only want to have a png-compliant reader/writer but don't need
* any of the extra transformations. This saves about 80 kbytes in a
* typical installation of the library. (PNG_NO_* form added in version
* 1.0.1c, for consistency)
* 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
* 1.4.0)
*/
/* The size of the png_text structure changed in libpng-1.0.6 when
* iTXt support was added. iTXt support was turned off by default through
* libpng-1.2.x, to support old apps that malloc the png_text structure
* instead of calling png_set_text() and letting libpng malloc it. It
* will be turned on by default in libpng-1.4.0.
*/
#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
# ifndef PNG_NO_iTXt_SUPPORTED
# define PNG_NO_iTXt_SUPPORTED
# endif
# ifndef PNG_NO_READ_iTXt
# define PNG_NO_READ_iTXt
# endif
# ifndef PNG_NO_WRITE_iTXt
# define PNG_NO_WRITE_iTXt
# endif
#endif
#if !defined(PNG_NO_iTXt_SUPPORTED)
# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
# define PNG_READ_iTXt
# endif
# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
# define PNG_WRITE_iTXt
# endif
#endif
/* The following support, added after version 1.0.0, can be turned off here en
* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
* with old applications that require the length of png_struct and png_info
* to remain unchanged.
*/
#ifdef PNG_LEGACY_SUPPORTED
# define PNG_NO_FREE_ME
# define PNG_NO_READ_UNKNOWN_CHUNKS
# define PNG_NO_WRITE_UNKNOWN_CHUNKS
# define PNG_NO_HANDLE_AS_UNKNOWN
# define PNG_NO_READ_USER_CHUNKS
# define PNG_NO_READ_iCCP
# define PNG_NO_WRITE_iCCP
# define PNG_NO_READ_iTXt
# define PNG_NO_WRITE_iTXt
# define PNG_NO_READ_sCAL
# define PNG_NO_WRITE_sCAL
# define PNG_NO_READ_sPLT
# define PNG_NO_WRITE_sPLT
# define PNG_NO_INFO_IMAGE
# define PNG_NO_READ_RGB_TO_GRAY
# define PNG_NO_READ_USER_TRANSFORM
# define PNG_NO_WRITE_USER_TRANSFORM
# define PNG_NO_USER_MEM
# define PNG_NO_READ_EMPTY_PLTE
# define PNG_NO_MNG_FEATURES
# define PNG_NO_FIXED_POINT_SUPPORTED
#endif
/* Ignore attempt to turn off both floating and fixed point support */
#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
!defined(PNG_NO_FIXED_POINT_SUPPORTED)
# define PNG_FIXED_POINT_SUPPORTED
#endif
#ifndef PNG_NO_FREE_ME
# define PNG_FREE_ME_SUPPORTED
#endif
#ifdef PNG_READ_SUPPORTED
/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
!defined(PNG_NO_READ_TRANSFORMS)
# define PNG_READ_TRANSFORMS_SUPPORTED
@ -616,28 +497,26 @@
# ifndef PNG_NO_READ_INVERT
# define PNG_READ_INVERT_SUPPORTED
# endif
#if 0 /* removed from libpng-1.4.0 */
# ifndef PNG_NO_READ_DITHER
# define PNG_READ_DITHER_SUPPORTED
# endif
#endif /* 0 */
# ifndef PNG_NO_READ_BACKGROUND
# define PNG_READ_BACKGROUND_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_READ_16_TO_8
# define PNG_READ_16_TO_8_SUPPORTED
# endif
#endif
# ifndef PNG_NO_READ_FILLER
# define PNG_READ_FILLER_SUPPORTED
# endif
# ifndef PNG_NO_READ_GAMMA
# define PNG_READ_GAMMA_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_READ_GRAY_TO_RGB
# define PNG_READ_GRAY_TO_RGB_SUPPORTED
# endif
#endif
# ifndef PNG_NO_READ_SWAP_ALPHA
# define PNG_READ_SWAP_ALPHA_SUPPORTED
# endif
@ -661,6 +540,7 @@
# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
#endif /* about interlacing capability! You'll */
/* still have interlacing unless you change the following define: */
#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
@ -670,19 +550,16 @@
# define PNG_SEQUENTIAL_READ_SUPPORTED
#endif
#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
#ifndef PNG_NO_READ_COMPOSITE_NODIV
# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
# endif
#endif
#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
/* Deprecated, will be removed from version 2.0.0.
Use PNG_MNG_FEATURES_SUPPORTED instead. */
#ifndef PNG_NO_READ_EMPTY_PLTE
# define PNG_READ_EMPTY_PLTE_SUPPORTED
#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
defined(PNG_READ_pCAL_SUPPORTED)
# ifndef PNG_GET_INT_32_SUPPORTED
# define PNG_GET_INT_32_SUPPORTED
# endif
#endif
@ -690,6 +567,7 @@
#ifdef PNG_WRITE_SUPPORTED
/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
!defined(PNG_NO_WRITE_TRANSFORMS)
# define PNG_WRITE_TRANSFORMS_SUPPORTED
@ -720,11 +598,9 @@
# ifndef PNG_NO_WRITE_SWAP_ALPHA
# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_WRITE_INVERT_ALPHA
# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
# endif
#endif
# ifndef PNG_NO_WRITE_USER_TRANSFORM
# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
# endif
@ -732,9 +608,10 @@
#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
!defined(PNG_WRITE_INTERLACING_SUPPORTED)
#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
encoders, but can cause trouble
if left undefined */
/* This is not required for PNG-compliant encoders, but can cause
* trouble if left undefined
*/
# define PNG_WRITE_INTERLACING_SUPPORTED
#endif
#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
@ -747,20 +624,16 @@
# define PNG_WRITE_FLUSH_SUPPORTED
#endif
#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
#ifndef PNG_NO_WRITE_EMPTY_PLTE
# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
defined(PNG_WRITE_pCAL_SUPPORTED)
# ifndef PNG_SAVE_INT_32_SUPPORTED
# define PNG_SAVE_INT_32_SUPPORTED
# endif
#endif
#endif /* PNG_WRITE_SUPPORTED */
#ifndef PNG_1_0_X
# ifndef PNG_NO_ERROR_NUMBERS
# define PNG_ERROR_NUMBERS_SUPPORTED
# endif
#endif /* PNG_1_0_X */
#define PNG_NO_ERROR_NUMBERS
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
@ -769,7 +642,7 @@
# endif
#endif
#ifndef PNG_NO_STDIO
#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
# define PNG_TIME_RFC1123_SUPPORTED
#endif
@ -793,65 +666,19 @@
# define PNG_EASY_ACCESS_SUPPORTED
#endif
/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
* and removed from version 1.2.20. The following will be removed
* from libpng-1.4.0
*/
#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
# ifndef PNG_OPTIMIZED_CODE_SUPPORTED
# define PNG_OPTIMIZED_CODE_SUPPORTED
# endif
#endif
#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
# define PNG_ASSEMBLER_CODE_SUPPORTED
# endif
# if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
/* work around 64-bit gcc compiler bugs in gcc-3.x */
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_NO_MMX_CODE
# endif
# endif
# ifdef __APPLE__
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_NO_MMX_CODE
# endif
# endif
# if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_NO_MMX_CODE
# endif
# endif
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_MMX_CODE_SUPPORTED
# endif
#endif
/* end of obsolete code to be removed from libpng-1.4.0 */
/* Added at libpng-1.2.0 */
#ifndef PNG_1_0_X
#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
# define PNG_USER_MEM_SUPPORTED
#endif
#endif /* PNG_1_0_X */
/* Added at libpng-1.2.6 */
#ifndef PNG_1_0_X
#ifndef PNG_SET_USER_LIMITS_SUPPORTED
# ifndef PNG_NO_SET_USER_LIMITS
# define PNG_SET_USER_LIMITS_SUPPORTED
# endif
#endif
#endif /* PNG_1_0_X */
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
* how large, set these limits to 0x7fffffffL
*/
#ifndef PNG_USER_WIDTH_MAX
@ -861,11 +688,14 @@
# define PNG_USER_HEIGHT_MAX 1000000L
#endif
#ifndef PNG_1_0_X
/* Added at libpng-1.2.41 */
/* Added at libpng-1.4.0 */
#ifndef PNG_USER_CHUNK_CACHE_MAX
# define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
#endif
/* Added at libpng-1.4.0 */
#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
# define PNG_IO_STATE_SUPPORTED
#endif
#ifndef PNG_LITERAL_SHARP
@ -877,15 +707,13 @@
#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
#endif
/* Added at libpng-1.2.34 */
#ifndef PNG_STRING_NEWLINE
#define PNG_STRING_NEWLINE "\n"
#endif
/* These are currently experimental features, define them if you want */
/* very little testing */
/* Very little testing */
/*
#ifdef PNG_READ_SUPPORTED
# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
@ -902,21 +730,17 @@
#endif
*/
/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
/*
#define PNG_NO_POINTER_INDEXING
*/
#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
# define PNG_USE_READ_MACROS
#endif
/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
#if !defined(PNG_NO_POINTER_INDEXING) && \
!defined(PNG_POINTER_INDEXING_SUPPORTED)
# define PNG_POINTER_INDEXING_SUPPORTED
#endif
/* These functions are turned off by default, as they will be phased out. */
/*
#define PNG_USELESS_TESTS_SUPPORTED
#define PNG_CORRECT_PALETTE_SUPPORTED
*/
/* Any chunks you are not interested in, you can undef here. The
* ones that allocate memory may be expecially important (hIST,
@ -924,12 +748,21 @@
* a bit smaller.
*/
/* The size of the png_text structure changed in libpng-1.0.6 when
* iTXt support was added. iTXt support was turned off by default through
* libpng-1.2.x, to support old apps that malloc the png_text structure
* instead of calling png_set_text() and letting libpng malloc it. It
* was turned on by default in libpng-1.4.0.
*/
/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
#if defined(PNG_READ_SUPPORTED) && \
!defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#endif
/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
#if defined(PNG_WRITE_SUPPORTED) && \
!defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
@ -943,6 +776,7 @@
# define PNG_NO_READ_tEXt
# define PNG_NO_READ_zTXt
#endif
#ifndef PNG_NO_READ_bKGD
# define PNG_READ_bKGD_SUPPORTED
# define PNG_bKGD_SUPPORTED
@ -1043,7 +877,6 @@
# undef PNG_NO_HANDLE_AS_UNKNOWN
# endif
#endif
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
@ -1193,7 +1026,6 @@
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
# endif
#endif
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
@ -1220,28 +1052,29 @@
* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
* don't have to be exactly that size. Some compilers dislike passing
* unsigned shorts as function parameters, so you may be better off using
* unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
* want to have unsigned int for png_uint_32 instead of unsigned long.
* unsigned int for png_uint_16.
*/
#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
typedef unsigned int png_uint_32;
typedef int png_int_32;
#else
typedef unsigned long png_uint_32;
typedef long png_int_32;
#endif
typedef unsigned short png_uint_16;
typedef short png_int_16;
typedef unsigned char png_byte;
/* This is usually size_t. It is typedef'ed just in case you need it to
change (I'm not sure if you will or not, so I thought I'd be safe) */
#ifdef PNG_SIZE_T
typedef PNG_SIZE_T png_size_t;
# define png_sizeof(x) png_convert_size(sizeof(x))
#ifdef PNG_NO_SIZE_T
typedef unsigned int png_size_t;
#else
typedef size_t png_size_t;
# define png_sizeof(x) sizeof(x)
#endif
#define png_sizeof(x) sizeof(x)
/* The following is needed for medium model support. It cannot be in the
* PNG_INTERNAL section. Needs modification for other compilers besides
* pngpriv.h header. Needs modification for other compilers besides
* MSC. Model independent support declares all arrays and pointers to be
* large using the far keyword. The zlib version used must also support
* model independent data. As of version zlib 1.0.4, the necessary changes
@ -1250,7 +1083,8 @@ typedef unsigned char png_byte;
*/
/* Separate compiler dependencies (problem here is that zlib.h always
defines FAR. (SJT) */
* defines FAR. (SJT)
*/
#ifdef __BORLANDC__
# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
# define LDATA 1
@ -1315,12 +1149,8 @@ typedef char FAR * png_charp;
typedef png_fixed_point FAR * png_fixed_point_p;
#ifndef PNG_NO_STDIO
#ifdef _WIN32_WCE
typedef HANDLE png_FILE_p;
#else
typedef FILE * png_FILE_p;
#endif
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
typedef double FAR * png_doublep;
@ -1342,20 +1172,7 @@ typedef double FAR * FAR * png_doublepp;
/* Pointers to pointers to pointers; i.e., pointer to array */
typedef char FAR * FAR * FAR * png_charppp;
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* SPC - Is this stuff deprecated? */
/* It'll be removed as of libpng-1.4.0 - GR-P */
/* libpng typedefs for types in zlib. If zlib changes
* or another compression library is used, then change these.
* Eliminates need to change all the source files.
*/
typedef charf * png_zcharp;
typedef charf * FAR * png_zcharpp;
typedef z_stream FAR * png_zstreamp;
#endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
/*
* Define PNG_BUILD_DLL if the module being built is a Windows
/* Define PNG_BUILD_DLL if the module being built is a Windows
* LIBPNG DLL.
*
* Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
@ -1375,42 +1192,6 @@ typedef z_stream FAR * png_zstreamp;
#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
# define PNG_DLL
#endif
/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
* When building a static lib, default to no GLOBAL ARRAYS, but allow
* command-line override
*/
#ifdef __CYGWIN__
# ifndef PNG_STATIC
# ifdef PNG_USE_GLOBAL_ARRAYS
# undef PNG_USE_GLOBAL_ARRAYS
# endif
# ifndef PNG_USE_LOCAL_ARRAYS
# define PNG_USE_LOCAL_ARRAYS
# endif
# else
# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
# ifdef PNG_USE_GLOBAL_ARRAYS
# undef PNG_USE_GLOBAL_ARRAYS
# endif
# endif
# endif
# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
# define PNG_USE_LOCAL_ARRAYS
# endif
#endif
/* Do not use global arrays (helps with building DLL's)
* They are no longer used in libpng itself, since version 1.0.5c,
* but might be required for some pre-1.0.5c applications.
*/
#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
# if defined(PNG_NO_GLOBAL_ARRAYS) || \
(defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
# define PNG_USE_LOCAL_ARRAYS
# else
# define PNG_USE_GLOBAL_ARRAYS
# endif
#endif
#ifdef __CYGWIN__
# undef PNGAPI
@ -1419,6 +1200,8 @@ typedef z_stream FAR * png_zstreamp;
# define PNG_IMPEXP
#endif
#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
* you may get warnings regarding the linkage of png_zalloc and png_zfree.
* Don't ignore those warnings; you must also reset the default calling
@ -1467,8 +1250,7 @@ typedef z_stream FAR * png_zstreamp;
# ifdef PNG_BUILD_DLL
# define PNG_IMPEXP __export
# else
# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
VC++ */
# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
# endif /* Exists in Borland C++ for
C++ classes (== huge) */
# endif
@ -1504,24 +1286,20 @@ typedef z_stream FAR * png_zstreamp;
# ifndef PNG_EXPORT
# define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
# endif
# ifdef PNG_USE_GLOBAL_ARRAYS
# ifndef PNG_EXPORT_VAR
# define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
# endif
# endif
#endif
#ifndef PNG_EXPORT
# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
#endif
#ifdef PNG_USE_GLOBAL_ARRAYS
# ifndef PNG_EXPORT_VAR
# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
# endif
#endif
/* Support for compiler specific function attributes. These are used
* so that where compiler support is available incorrect use of API
* functions in png.h will generate compiler warnings.
*
* Added at libpng-1.2.41.
*/
#ifdef PNG_PEDANTIC_WARNINGS
#ifndef PNG_NO_PEDANTIC_WARNINGS
# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
# define PNG_PEDANTIC_WARNINGS_SUPPORTED
# endif
@ -1585,35 +1363,53 @@ typedef z_stream FAR * png_zstreamp;
# define PNG_PRIVATE /* This is a private libpng function */
#endif
/* User may want to use these so they are not in PNG_INTERNAL. Any library
* functions that are passed far data must be model independent.
/* Users may want to use these so they are not private. Any library
* functions that are passed far data must be model-independent.
*/
/* memory model/platform independent fns */
#ifndef PNG_ABORT
# ifdef _WINDOWS_
# define PNG_ABORT() ExitProcess(0)
# else
# define PNG_ABORT() abort()
# endif
#ifdef PNG_SETJMP_SUPPORTED
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
#else
# define png_jmpbuf(png_ptr) \
(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
#endif
#ifdef USE_FAR_KEYWORD /* memory model independent fns */
#ifdef USE_FAR_KEYWORD
/* Use this to make far-to-near assignments */
# define CHECK 1
# define NOCHECK 0
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
# define png_strcpy _fstrcpy
# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
# define png_strlen _fstrlen
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
# define png_memset _fmemset
#else /* Use the usual functions */
# define png_sprintf sprintf
#else
# ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# define png_strcpy lstrcpyA
# define png_strncpy lstrcpynA
# define png_strlen lstrlenA
# define png_memcmp memcmp
# define png_memcpy CopyMemory
# define png_memset memset
# define png_sprintf wsprintfA
# else
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# define png_strcpy strcpy
# define png_strncpy strncpy /* Added to v 1.2.6 */
# define png_strlen strlen
# define png_memcmp memcmp /* SJT: added */
# define png_memcpy memcpy
# define png_memset memset
# define png_sprintf sprintf
# ifndef PNG_NO_SNPRINTF
# ifdef _MSC_VER
# define png_snprintf _snprintf /* Added to v 1.2.19 */
@ -1636,12 +1432,40 @@ typedef z_stream FAR * png_zstreamp;
# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
# endif
# define png_strlen strlen
# define png_memcmp memcmp /* SJT: added */
# define png_memcpy memcpy
# define png_memset memset
# endif
/* End of memory model independent support */
#endif
/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
* and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
* to png_alloc_size_t are not necessary; in fact, it is recommended
* not to use them at all so that the compiler can complain when something
* turns out to be problematic.
* Casts in the other direction (from png_alloc_size_t to png_size_t or
* png_uint_32) should be explicitly applied; however, we do not expect
* to encounter practical situations that require such conversions.
*/
#if defined(__TURBOC__) && !defined(__FLAT__)
# define png_mem_alloc farmalloc
# define png_mem_free farfree
typedef unsigned long png_alloc_size_t;
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
# define png_mem_alloc(s) halloc(s, 1)
# define png_mem_free hfree
typedef unsigned long png_alloc_size_t;
# else
# if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
# define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
# define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
typedef DWORD png_alloc_size_t;
# else
# define png_mem_alloc malloc
# define png_mem_free free
typedef png_size_t png_alloc_size_t;
# endif
# endif
#endif
/* End of memory model/platform independent support */
/* Just a little check that someone hasn't tried to define something
* contradictory.
@ -1651,6 +1475,7 @@ typedef z_stream FAR * png_zstreamp;
# define PNG_ZBUF_SIZE 65536L
#endif
/* Added at libpng-1.2.8 */
#endif /* PNG_VERSION_INFO_ONLY */

28
GRRLIB/lib/png/pngerror.c
View file

@ -1,8 +1,8 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -16,10 +16,10 @@
* at each function.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
static void /* PRIVATE */
png_default_error PNGARG((png_structp png_ptr,
@ -230,6 +230,22 @@ png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
#endif
#endif /* PNG_READ_SUPPORTED */
#ifdef PNG_SETJMP_SUPPORTED
/* This API only exists if ANSI-C style error handling is used,
* otherwise it is necessary for png_default_error to be overridden.
*/
jmp_buf* PNGAPI
png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
size_t jmp_buf_size)
{
if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
return NULL;
png_ptr->longjmp_fn = longjmp_fn;
return &png_ptr->jmpbuf;
}
#endif
/* This is the default error handling function. Note that replacements for
* this function MUST NOT RETURN, or the program will likely crash. This
* function is used by default, or if the program supplies NULL for the
@ -274,16 +290,16 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
#endif
#ifdef PNG_SETJMP_SUPPORTED
if (png_ptr)
if (png_ptr && png_ptr->longjmp_fn)
{
# ifdef USE_FAR_KEYWORD
{
jmp_buf jmpbuf;
png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
longjmp(jmpbuf,1);
png_ptr->longjmp_fn(jmpbuf, 1);
}
# else
longjmp(png_ptr->jmpbuf, 1);
png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
# endif
}
#endif

103
GRRLIB/lib/png/pnggccrd.c
View file

@ -1,103 +0,0 @@
/* pnggccrd.c was removed from libpng-1.2.20. */
/* This code snippet is for use by configure's compilation test. */
#if (!defined _MSC_VER) && \
defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
defined(PNG_MMX_CODE_SUPPORTED)
int PNGAPI png_dummy_mmx_support(void);
static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested
int PNGAPI
png_dummy_mmx_support(void) __attribute__((noinline));
int PNGAPI
png_dummy_mmx_support(void)
{
int result;
#ifdef PNG_MMX_CODE_SUPPORTED // superfluous, but what the heck
__asm__ __volatile__ (
#ifdef __x86_64__
"pushq %%rbx \n\t" // rbx gets clobbered by CPUID instruction
"pushq %%rcx \n\t" // so does rcx...
"pushq %%rdx \n\t" // ...and rdx (but rcx & rdx safe on Linux)
"pushfq \n\t" // save Eflag to stack
"popq %%rax \n\t" // get Eflag from stack into rax
"movq %%rax, %%rcx \n\t" // make another copy of Eflag in rcx
"xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
"pushq %%rax \n\t" // save modified Eflag back to stack
"popfq \n\t" // restore modified value to Eflag reg
"pushfq \n\t" // save Eflag to stack
"popq %%rax \n\t" // get Eflag from stack
"pushq %%rcx \n\t" // save original Eflag to stack
"popfq \n\t" // restore original Eflag
#else
"pushl %%ebx \n\t" // ebx gets clobbered by CPUID instruction
"pushl %%ecx \n\t" // so does ecx...
"pushl %%edx \n\t" // ...and edx (but ecx & edx safe on Linux)
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack into eax
"movl %%eax, %%ecx \n\t" // make another copy of Eflag in ecx
"xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
"pushl %%eax \n\t" // save modified Eflag back to stack
"popfl \n\t" // restore modified value to Eflag reg
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack
"pushl %%ecx \n\t" // save original Eflag to stack
"popfl \n\t" // restore original Eflag
#endif
"xorl %%ecx, %%eax \n\t" // compare new Eflag with original Eflag
"jz 0f \n\t" // if same, CPUID instr. is not supported
"xorl %%eax, %%eax \n\t" // set eax to zero
// ".byte 0x0f, 0xa2 \n\t" // CPUID instruction (two-byte opcode)
"cpuid \n\t" // get the CPU identification info
"cmpl $1, %%eax \n\t" // make sure eax return non-zero value
"jl 0f \n\t" // if eax is zero, MMX is not supported
"xorl %%eax, %%eax \n\t" // set eax to zero and...
"incl %%eax \n\t" // ...increment eax to 1. This pair is
// faster than the instruction "mov eax, 1"
"cpuid \n\t" // get the CPU identification info again
"andl $0x800000, %%edx \n\t" // mask out all bits but MMX bit (23)
"cmpl $0, %%edx \n\t" // 0 = MMX not supported
"jz 0f \n\t" // non-zero = yes, MMX IS supported
"movl $1, %%eax \n\t" // set return value to 1
"jmp 1f \n\t" // DONE: have MMX support
"0: \n\t" // .NOT_SUPPORTED: target label for jump instructions
"movl $0, %%eax \n\t" // set return value to 0
"1: \n\t" // .RETURN: target label for jump instructions
#ifdef __x86_64__
"popq %%rdx \n\t" // restore rdx
"popq %%rcx \n\t" // restore rcx
"popq %%rbx \n\t" // restore rbx
#else
"popl %%edx \n\t" // restore edx
"popl %%ecx \n\t" // restore ecx
"popl %%ebx \n\t" // restore ebx
#endif
// "ret \n\t" // DONE: no MMX support
// (fall through to standard C "ret")
: "=a" (result) // output list
: // any variables used on input (none)
// no clobber list
// , "%ebx", "%ecx", "%edx" // GRR: we handle these manually
// , "memory" // if write to a variable gcc thought was in a reg
// , "cc" // "condition codes" (flag bits)
);
_mmx_supported = result;
#else
_mmx_supported = 0;
#endif /* PNG_MMX_CODE_SUPPORTED */
return _mmx_supported;
}
#endif

98
GRRLIB/lib/png/pngget.c
View file

@ -1,8 +1,8 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -12,10 +12,10 @@
*
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
png_uint_32 PNGAPI
png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
@ -27,7 +27,7 @@ png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
return(0);
}
png_uint_32 PNGAPI
png_size_t PNGAPI
png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
@ -803,7 +803,7 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
#ifdef PNG_tRNS_SUPPORTED
png_uint_32 PNGAPI
png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep *trans, int *num_trans, png_color_16p *trans_values)
png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
{
png_uint_32 retval = 0;
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
@ -812,25 +812,25 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (trans != NULL)
if (trans_alpha != NULL)
{
*trans = info_ptr->trans;
*trans_alpha = info_ptr->trans_alpha;
retval |= PNG_INFO_tRNS;
}
if (trans_values != NULL)
*trans_values = &(info_ptr->trans_values);
if (trans_color != NULL)
*trans_color = &(info_ptr->trans_color);
}
else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
{
if (trans_values != NULL)
if (trans_color != NULL)
{
*trans_values = &(info_ptr->trans_values);
*trans_color = &(info_ptr->trans_color);
retval |= PNG_INFO_tRNS;
}
if (trans != NULL)
*trans = NULL;
if (trans_alpha != NULL)
*trans_alpha = NULL;
}
if (num_trans != NULL)
{
@ -873,60 +873,13 @@ png_get_user_chunk_ptr(png_structp png_ptr)
#endif
#ifdef PNG_WRITE_SUPPORTED
png_uint_32 PNGAPI
png_size_t PNGAPI
png_get_compression_buffer_size(png_structp png_ptr)
{
return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
return (png_ptr ? png_ptr->zbuf_size : 0L);
}
#endif
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
#ifndef PNG_1_0_X
/* This function was added to libpng 1.2.0 and should exist by default */
png_uint_32 PNGAPI
png_get_asm_flags (png_structp png_ptr)
{
/* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0L: 0L);
}
/* This function was added to libpng 1.2.0 and should exist by default */
png_uint_32 PNGAPI
png_get_asm_flagmask (int flag_select)
{
/* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select;
return 0L;
}
/* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
/* This function was added to libpng 1.2.0 */
png_uint_32 PNGAPI
png_get_mmx_flagmask (int flag_select, int *compilerID)
{
/* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select;
*compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
return 0L;
}
/* This function was added to libpng 1.2.0 */
png_byte PNGAPI
png_get_mmx_bitdepth_threshold (png_structp png_ptr)
{
/* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0: 0);
}
/* This function was added to libpng 1.2.0 */
png_uint_32 PNGAPI
png_get_mmx_rowbytes_threshold (png_structp png_ptr)
{
/* Obsolete, to be removed from libpng-1.4.0 */
return (png_ptr? 0L: 0L);
}
#endif /* ?PNG_1_0_X */
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* These functions were added to libpng 1.2.6 */
@ -940,6 +893,27 @@ png_get_user_height_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
png_get_chunk_cache_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL :
png_ptr->user_chunk_cache_max - 1 : 0);
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
png_get_io_state (png_structp png_ptr)
{
return png_ptr->io_state;
}
png_bytep PNGAPI
png_get_io_chunk_name (png_structp png_ptr)
{
return png_ptr->chunk_name;
}
#endif /* ?PNG_IO_STATE_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

78
GRRLIB/lib/png/pngmem.c
View file

@ -1,8 +1,8 @@
/* pngmem.c - stub functions for memory allocation
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -17,10 +17,10 @@
* identify the replacement functions.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
/* Borland DOS special memory handler */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
@ -32,7 +32,7 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
return (png_create_struct_2(type, NULL, NULL));
}
/* Alternate version of png_create_struct, for use with user-defined malloc. */
@ -71,7 +71,7 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
/* Free memory allocated by a png_create_struct() call */
@ -116,7 +116,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* (which should cause a fatal error) and introducing major problems.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
png_calloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
@ -127,7 +127,7 @@ png_calloc(png_structp png_ptr, png_uint_32 size)
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
png_malloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
@ -140,12 +140,12 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
else
ret = (png_malloc_default(png_ptr, size));
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory!");
png_error(png_ptr, "Out of memory");
return (ret);
}
png_voidp PNGAPI
png_malloc_default(png_structp png_ptr, png_uint_32 size)
png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
@ -201,9 +201,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of Memory."); /* Note "O" and "M" */
png_error(png_ptr, "Out Of Memory"); /* Note "O" and "M" */
else
png_warning(png_ptr, "Out Of Memory.");
png_warning(png_ptr, "Out Of Memory");
#endif
return (NULL);
}
@ -229,9 +229,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of memory."); /* Note "O" and "M" */
png_error(png_ptr, "Out Of memory"); /* Note "O" and "M" */
else
png_warning(png_ptr, "Out Of memory.");
png_warning(png_ptr, "Out Of memory");
#endif
return (NULL);
}
@ -258,9 +258,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory."); /* Note "o" and "M" */
png_error(png_ptr, "Out of Memory"); /* Note "o" and "M" */
else
png_warning(png_ptr, "Out of Memory.");
png_warning(png_ptr, "Out of Memory");
#endif
return (NULL);
}
@ -274,9 +274,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
if (ret == NULL)
{
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */
png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
else
png_warning(png_ptr, "Out of memory."); /* Note "o" and "m" */
png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
}
#endif
@ -348,7 +348,7 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
return (png_create_struct_2(type, NULL, NULL));
}
/* Allocate memory for a png_struct or a png_info. The malloc and
@ -402,7 +402,7 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
/* Free memory allocated by a png_create_struct() call */
@ -443,7 +443,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
png_calloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
@ -454,7 +454,7 @@ png_calloc(png_structp png_ptr, png_uint_32 size)
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
png_malloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
@ -467,12 +467,12 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
else
ret = (png_malloc_default(png_ptr, size));
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory!");
png_error(png_ptr, "Out of Memory");
return (ret);
}
png_voidp PNGAPI
png_malloc_default(png_structp png_ptr, png_uint_32 size)
png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
@ -559,16 +559,13 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
#endif /* Not Borland DOS special memory handler */
#ifdef PNG_1_0_X
# define png_malloc_warn png_malloc
#else
/* This function was added at libpng version 1.2.3. The png_malloc_warn()
* function will set up png_malloc() to issue a png_warning and return NULL
* instead of issuing a png_error, if it fails to allocate the requested
* memory.
*/
png_voidp PNGAPI
png_malloc_warn(png_structp png_ptr, png_uint_32 size)
png_malloc_warn(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ptr;
png_uint_32 save_flags;
@ -581,34 +578,7 @@ png_malloc_warn(png_structp png_ptr, png_uint_32 size)
png_ptr->flags=save_flags;
return(ptr);
}
#endif
png_voidp PNGAPI
png_memcpy_check (png_structp png_ptr, png_voidp s1, png_voidp s2,
png_uint_32 length)
{
png_size_t size;
size = (png_size_t)length;
if ((png_uint_32)size != length)
png_error(png_ptr, "Overflow in png_memcpy_check.");
return(png_memcpy (s1, s2, size));
}
png_voidp PNGAPI
png_memset_check (png_structp png_ptr, png_voidp s1, int value,
png_uint_32 length)
{
png_size_t size;
size = (png_size_t)length;
if ((png_uint_32)size != length)
png_error(png_ptr, "Overflow in png_memset_check.");
return (png_memset (s1, value, size));
}
#ifdef PNG_USER_MEM_SUPPORTED
/* This function is called when the application wants to use another method

117
GRRLIB/lib/png/pngpread.c
View file

@ -1,8 +1,8 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.2.42 [January 3, 2010]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -11,10 +11,10 @@
* and license in png.h
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
#include "pngpriv.h"
/* Push model modes */
#define PNG_READ_SIG_MODE 0
@ -150,63 +150,61 @@ png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
void /* PRIVATE */
png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IHDR;
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
PNG_IHDR;
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
PNG_sCAL;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
PNG_sRGB;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
PNG_sPLT;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
/* First we make sure we have enough data for the 4 byte chunk name
* and the 4 byte chunk length before proceeding with decoding the
@ -324,7 +322,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
return;
if (png_ptr->mode & PNG_AFTER_IDAT)
png_error(png_ptr, "Too many IDAT's found");
png_benign_error(png_ptr, "Too many IDATs found");
}
png_ptr->idat_size = png_ptr->push_length;
@ -701,7 +699,7 @@ png_push_save_buffer(png_structp png_ptr)
new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
old_buffer = png_ptr->save_buffer;
png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr,
(png_uint_32)new_max);
(png_size_t)new_max);
png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
png_free(png_ptr, old_buffer);
png_ptr->save_buffer_max = new_max;
@ -730,9 +728,7 @@ png_push_restore_buffer(png_structp png_ptr, png_bytep buffer,
void /* PRIVATE */
png_push_read_IDAT(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
#endif
PNG_IDAT;
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
{
png_byte chunk_length[4];
@ -829,7 +825,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
int ret;
if ((png_ptr->flags & PNG_FLAG_ZLIB_FINISHED) && buffer_length)
png_error(png_ptr, "Extra compression data");
png_benign_error(png_ptr, "Extra compression data");
png_ptr->zstream.next_in = buffer;
png_ptr->zstream.avail_in = (uInt)buffer_length;
@ -841,7 +837,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
if (ret == Z_STREAM_END)
{
if (png_ptr->zstream.avail_in)
png_error(png_ptr, "Extra compressed data");
png_benign_error(png_ptr, "Extra compressed data");
if (!(png_ptr->zstream.avail_out))
{
@ -898,8 +894,7 @@ png_push_process_row(png_structp png_ptr)
png_ptr->row_buf + 1, png_ptr->prev_row + 1,
(int)(png_ptr->row_buf[0]));
png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
png_ptr->rowbytes + 1);
png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
png_do_read_transformations(png_ptr);
@ -930,7 +925,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
@ -939,14 +934,14 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
if (png_ptr->pass == 6 && png_ptr->height <= 4)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
@ -966,7 +961,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
@ -986,7 +981,7 @@ png_push_process_row(png_structp png_ptr)
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
@ -994,7 +989,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
@ -1016,7 +1011,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
@ -1036,13 +1031,13 @@ png_push_process_row(png_structp png_ptr)
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 6) /* Pass 5 might be empty */
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
@ -1061,7 +1056,7 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->pass == 6) /* Skip top generated row */
{
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
@ -1075,7 +1070,7 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->pass != 6)
break;
png_push_have_row(png_ptr, png_bytep_NULL);
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
@ -1091,7 +1086,6 @@ png_push_process_row(png_structp png_ptr)
void /* PRIVATE */
png_read_push_finish_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@ -1110,7 +1104,6 @@ png_read_push_finish_row(png_structp png_ptr)
* it, uncomment it here and in png.h
PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
*/
#endif
png_ptr->row_number++;
if (png_ptr->row_number < png_ptr->num_rows)
@ -1120,7 +1113,7 @@ png_read_push_finish_row(png_structp png_ptr)
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
png_memset_check(png_ptr, png_ptr->prev_row, 0,
png_memset(png_ptr->prev_row, 0,
png_ptr->rowbytes + 1);
do
{
@ -1180,7 +1173,7 @@ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
#endif
png_ptr->current_text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(length + 1));
(png_size_t)(length + 1));
png_ptr->current_text[length] = '\0';
png_ptr->current_text_ptr = png_ptr->current_text;
png_ptr->current_text_size = (png_size_t)length;
@ -1234,7 +1227,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
text++;
text_ptr = (png_textp)png_malloc(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
text_ptr->key = key;
#ifdef PNG_iTXt_SUPPORTED
@ -1250,7 +1243,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
png_ptr->current_text = NULL;
if (ret)
png_warning(png_ptr, "Insufficient memory to store text chunk.");
png_warning(png_ptr, "Insufficient memory to store text chunk");
}
}
#endif
@ -1280,7 +1273,7 @@ png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
#endif
png_ptr->current_text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(length + 1));
(png_size_t)(length + 1));
png_ptr->current_text[length] = '\0';
png_ptr->current_text_ptr = png_ptr->current_text;
png_ptr->current_text_size = (png_size_t)length;
@ -1373,7 +1366,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
if (text == NULL)
{
text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(png_ptr->zbuf_size
(png_ptr->zbuf_size
- png_ptr->zstream.avail_out + key_size + 1));
png_memcpy(text + key_size, png_ptr->zbuf,
@ -1392,7 +1385,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
tmp = text;
text = (png_charp)png_malloc(png_ptr, text_size +
(png_uint_32)(png_ptr->zbuf_size
(png_ptr->zbuf_size
- png_ptr->zstream.avail_out + 1));
png_memcpy(text, tmp, text_size);
@ -1436,7 +1429,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
text += key_size;
text_ptr = (png_textp)png_malloc(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
text_ptr->key = key;
#ifdef PNG_iTXt_SUPPORTED
@ -1451,7 +1444,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to store text chunk.");
png_warning(png_ptr, "Insufficient memory to store text chunk");
}
}
#endif
@ -1479,7 +1472,7 @@ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
#endif
png_ptr->current_text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(length + 1));
(png_size_t)(length + 1));
png_ptr->current_text[length] = '\0';
png_ptr->current_text_ptr = png_ptr->current_text;
png_ptr->current_text_size = (png_size_t)length;
@ -1556,7 +1549,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
text++;
text_ptr = (png_textp)png_malloc(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
text_ptr->compression = comp_flag + 2;
text_ptr->key = key;
@ -1572,7 +1565,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to store iTXt chunk.");
png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
}
}
#endif
@ -1627,7 +1620,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
else
{
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
(png_uint_32)length);
(png_size_t)length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
@ -1692,10 +1685,8 @@ void PNGAPI
png_progressive_combine_row (png_structp png_ptr,
png_bytep old_row, png_bytep new_row)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST int FARDATA png_pass_dsp_mask[7] =
{0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
#endif
if (png_ptr == NULL)
return;

955
GRRLIB/lib/png/pngpriv.h Normal file
View file

@ -0,0 +1,955 @@
/* pngpriv.h - private declarations for use inside libpng
*
* libpng version 1.4.0 - January 3, 2010
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*/
/* The symbols declared in this file (including the functions declared
* as PNG_EXTERN) are PRIVATE. They are not part of the libpng public
* interface, and are not recommended for use by regular applications.
* Some of them may become public in the future; others may stay private,
* change in an incompatible way, or even disappear.
* Although the libpng users are not forbidden to include this header,
* they should be well aware of the issues that may arise from doing so.
*/
#ifndef PNGPRIV_H
#define PNGPRIV_H
#ifndef PNG_VERSION_INFO_ONLY
#include <stdlib.h>
/* The functions exported by PNG_EXTERN are internal functions, which
* aren't usually used outside the library (as far as I know), so it is
* debatable if they should be exported at all. In the future, when it
* is possible to have run-time registry of chunk-handling functions,
* some of these will be made available again.
#define PNG_EXTERN extern
*/
#define PNG_EXTERN
/* Other defines specific to compilers can go here. Try to keep
* them inside an appropriate ifdef/endif pair for portability.
*/
#ifdef PNG_FLOATING_POINT_SUPPORTED
# ifdef MACOS
/* 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
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
# include <m68881.h>
# endif
#endif
/* Codewarrior on NT has linking problems without this. */
#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
# define PNG_ALWAYS_EXTERN
#endif
/* This provides the non-ANSI (far) memory allocation routines. */
#if defined(__TURBOC__) && defined(__MSDOS__)
# include <mem.h>
# include <alloc.h>
#endif
#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
defined(_WIN32) || defined(__WIN32__)
# include <windows.h> /* defines _WINDOWS_ macro */
/* I have no idea why is this necessary... */
# ifdef _MSC_VER
# include <malloc.h>
# endif
#endif
/* Various modes of operation. Note that after an init, mode is set to
* zero automatically when the structure is created.
*/
#define PNG_HAVE_IHDR 0x01
#define PNG_HAVE_PLTE 0x02
#define PNG_HAVE_IDAT 0x04
#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */
#define PNG_HAVE_IEND 0x10
#define PNG_HAVE_gAMA 0x20
#define PNG_HAVE_cHRM 0x40
#define PNG_HAVE_sRGB 0x80
#define PNG_HAVE_CHUNK_HEADER 0x100
#define PNG_WROTE_tIME 0x200
#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
#define PNG_BACKGROUND_IS_GRAY 0x800
#define PNG_HAVE_PNG_SIGNATURE 0x1000
#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
/* Flags for the transformations the PNG library does on the image data */
#define PNG_BGR 0x0001
#define PNG_INTERLACE 0x0002
#define PNG_PACK 0x0004
#define PNG_SHIFT 0x0008
#define PNG_SWAP_BYTES 0x0010
#define PNG_INVERT_MONO 0x0020
#define PNG_DITHER 0x0040
#define PNG_BACKGROUND 0x0080
#define PNG_BACKGROUND_EXPAND 0x0100
/* 0x0200 unused */
#define PNG_16_TO_8 0x0400
#define PNG_RGBA 0x0800
#define PNG_EXPAND 0x1000
#define PNG_GAMMA 0x2000
#define PNG_GRAY_TO_RGB 0x4000
#define PNG_FILLER 0x8000L
#define PNG_PACKSWAP 0x10000L
#define PNG_SWAP_ALPHA 0x20000L
#define PNG_STRIP_ALPHA 0x40000L
#define PNG_INVERT_ALPHA 0x80000L
#define PNG_USER_TRANSFORM 0x100000L
#define PNG_RGB_TO_GRAY_ERR 0x200000L
#define PNG_RGB_TO_GRAY_WARN 0x400000L
#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
/* 0x800000L Unused */
#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
#define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */
/* 0x4000000L unused */
/* 0x8000000L unused */
/* 0x10000000L unused */
/* 0x20000000L unused */
/* 0x40000000L unused */
/* Flags for png_create_struct */
#define PNG_STRUCT_PNG 0x0001
#define PNG_STRUCT_INFO 0x0002
/* Scaling factor for filter heuristic weighting calculations */
#define PNG_WEIGHT_SHIFT 8
#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
#define PNG_COST_SHIFT 3
#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
/* 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_LEVEL 0x0002
#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004
#define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008
#define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010
#define PNG_FLAG_ZLIB_FINISHED 0x0020
#define PNG_FLAG_ROW_INIT 0x0040
#define PNG_FLAG_FILLER_AFTER 0x0080
#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
/* 0x1000 unused */
/* 0x2000 unused */
/* 0x4000 unused */
#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L
#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L
#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L
#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L
#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L
#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L
#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
#define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */
/* 0x1000000L unused */
/* 0x2000000L unused */
/* 0x4000000L unused */
/* 0x8000000L unused */
/* 0x10000000L unused */
/* 0x20000000L unused */
/* 0x40000000L unused */
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
PNG_FLAG_CRC_ANCILLARY_NOWARN)
#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \
PNG_FLAG_CRC_CRITICAL_IGNORE)
#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
PNG_FLAG_CRC_CRITICAL_MASK)
/* Save typing and make code easier to understand */
#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
abs((int)((c1).green) - (int)((c2).green)) + \
abs((int)((c1).blue) - (int)((c2).blue)))
/* Added to libpng-1.2.6 JB */
#define PNG_ROWBYTES(pixel_bits, width) \
((pixel_bits) >= 8 ? \
((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
(( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
/* PNG_OUT_OF_RANGE returns true if value is outside the range
* ideal-delta..ideal+delta. Each argument is evaluated twice.
* "ideal" and "delta" should be constants, normally simple
* integers, "value" a variable. Added to libpng-1.2.6 JB
*/
#define PNG_OUT_OF_RANGE(value, ideal, delta) \
( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
/* Constant strings for known chunk types. If you need to add a chunk,
* define the name here, and add an invocation of the macro wherever it's
* needed.
*/
#define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'}
#define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'}
#define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'}
#define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'}
#define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'}
#define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'}
#define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'}
#define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'}
#define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'}
#define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'}
#define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'}
#define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'}
#define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'}
#define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'}
#define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'}
#define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'}
#define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'}
#define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}
#define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'}
#define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
#define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
#define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* These functions are used internally in the code. They generally
* shouldn't be used unless you are writing code to add or replace some
* functionality in libpng. More information about most functions can
* be found in the files where the functions are located.
*/
/* Allocate memory for an internal libpng struct */
PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
/* Free memory from internal libpng struct */
PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
malloc_fn, png_voidp mem_ptr));
PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
png_free_ptr free_fn, png_voidp mem_ptr));
/* Free any memory that info_ptr points to and reset struct. */
PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
png_infop info_ptr));
/* Function to allocate memory for zlib. PNGAPI is disallowed. */
PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
/* Function to free memory for zlib. PNGAPI is disallowed. */
PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
/* Next four functions are used internally as callbacks. PNGAPI is required
* but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */
PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
png_bytep data, png_size_t length));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
png_bytep buffer, png_size_t length));
#endif
PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
png_bytep data, png_size_t length));
#ifdef PNG_WRITE_FLUSH_SUPPORTED
#ifdef PNG_STDIO_SUPPORTED
PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
#endif
#endif
/* Reset the CRC variable */
PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
/* Write the "data" buffer to whatever output you are using */
PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
png_size_t length));
/* Read the chunk header (length + type name) */
PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr));
/* Read data from whatever input you are using into the "data" buffer */
PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
png_size_t length));
/* Read bytes into buf, and update png_ptr->crc */
PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
png_size_t length));
/* Decompress data in a chunk that uses compression */
#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr,
int comp_type, png_size_t chunklength, png_size_t prefix_length,
png_size_t *data_length));
#endif
/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip));
/* Read the CRC from the file and compare it to the libpng calculated CRC */
PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
/* Calculate the CRC over a section of data. Note that we are only
* passing a maximum of 64K on systems that have this as a memory limit,
* since this is the maximum buffer size we can specify.
*/
PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
png_size_t length));
#ifdef PNG_WRITE_FLUSH_SUPPORTED
PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
#endif
/* Write various chunks */
/* Write the IHDR chunk, and update the png_struct with the necessary
* information.
*/
PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width,
png_uint_32 height,
int bit_depth, int color_type, int compression_method, int filter_method,
int interlace_method));
PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette,
png_uint_32 num_pal));
PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
png_size_t length));
PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
#ifdef PNG_WRITE_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point
file_gamma));
#endif
#endif
#ifdef PNG_WRITE_sBIT_SUPPORTED
PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
int color_type));
#endif
#ifdef PNG_WRITE_cHRM_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_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));
#endif
PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
png_fixed_point int_white_x, png_fixed_point int_white_y,
png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
png_fixed_point int_blue_y));
#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
int intent));
#endif
#ifdef PNG_WRITE_iCCP_SUPPORTED
PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
png_charp name, int compression_type,
png_charp profile, int proflen));
/* Note to maintainer: profile should be png_bytep */
#endif
#ifdef PNG_WRITE_sPLT_SUPPORTED
PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
png_sPLT_tp palette));
#endif
#ifdef PNG_WRITE_tRNS_SUPPORTED
PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
png_color_16p values, int number, int color_type));
#endif
#ifdef PNG_WRITE_bKGD_SUPPORTED
PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
png_color_16p values, int color_type));
#endif
#ifdef PNG_WRITE_hIST_SUPPORTED
PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
int num_hist));
#endif
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
png_charp key, png_charpp new_key));
#endif
#ifdef PNG_WRITE_tEXt_SUPPORTED
PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
png_charp text, png_size_t text_len));
#endif
#ifdef PNG_WRITE_zTXt_SUPPORTED
PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
png_charp text, png_size_t text_len, int compression));
#endif
#ifdef PNG_WRITE_iTXt_SUPPORTED
PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
int compression, png_charp key, png_charp lang, png_charp lang_key,
png_charp text));
#endif
#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
png_infop info_ptr, png_textp text_ptr, int num_text));
#endif
#ifdef PNG_WRITE_oFFs_SUPPORTED
PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
png_int_32 x_offset, png_int_32 y_offset, int unit_type));
#endif
#ifdef PNG_WRITE_pCAL_SUPPORTED
PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
png_int_32 X0, png_int_32 X1, int type, int nparams,
png_charp units, png_charpp params));
#endif
#ifdef PNG_WRITE_pHYs_SUPPORTED
PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
int unit_type));
#endif
#ifdef PNG_WRITE_tIME_SUPPORTED
PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
png_timep mod_time));
#endif
#ifdef PNG_WRITE_sCAL_SUPPORTED
#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
int unit, double width, double height));
#else
#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
int unit, png_charp width, png_charp height));
#endif
#endif
#endif
/* Called when finished processing a row of data */
PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
/* Internal use only. Called before first row of data */
PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
#ifdef PNG_READ_GAMMA_SUPPORTED
PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
png_byte bit_depth));
#endif
/* Combine a row of data, dealing with alpha, etc. if requested */
PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
int mask));
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Expand an interlaced row */
/* OLD pre-1.0.9 interface:
PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
png_bytep row, int pass, png_uint_32 transformations));
*/
PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
#endif
/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Grab pixels out of a row for an interlaced pass */
PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
png_bytep row, int pass));
#endif
/* Unfilter a row */
PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
/* Choose the best filter to use and filter the row data */
PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
png_row_infop row_info));
/* Write out the filtered row. */
PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
png_bytep filtered_row));
/* Finish a row while reading, dealing with interlacing passes, etc. */
PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
/* Initialize the row buffers, etc. */
PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
/* Optional call to update the users info structure */
PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
png_infop info_ptr));
/* These are the functions that do the transformations */
#ifdef PNG_READ_FILLER_SUPPORTED
PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
png_bytep row, png_uint_32 filler, png_uint_32 flags));
#endif
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
png_bytep row, png_uint_32 flags));
#endif
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
row_info, png_bytep row));
#endif
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#ifdef PNG_READ_PACK_SUPPORTED
PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_SHIFT_SUPPORTED
PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
png_color_8p sig_bits));
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_16_TO_8_SUPPORTED
PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_READ_DITHER_SUPPORTED
PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));
# ifdef PNG_CORRECT_PALETTE_SUPPORTED
PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
png_colorp palette, int num_palette));
# endif
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
#endif
#ifdef PNG_WRITE_PACK_SUPPORTED
PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
png_bytep row, png_uint_32 bit_depth));
#endif
#ifdef PNG_WRITE_SHIFT_SUPPORTED
PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
png_color_8p bit_depth));
#endif
#ifdef PNG_READ_BACKGROUND_SUPPORTED
#ifdef PNG_READ_GAMMA_SUPPORTED
PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
png_color_16p trans_color, png_color_16p background,
png_color_16p background_1,
png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
png_uint_16pp gamma_16_to_1, int gamma_shift));
#else
PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
png_color_16p trans_color, png_color_16p background));
#endif
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
png_bytep gamma_table, png_uint_16pp gamma_16_table,
int gamma_shift));
#endif
#ifdef PNG_READ_EXPAND_SUPPORTED
PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
png_bytep row, png_color_16p trans_value));
#endif
/* The following decodes the appropriate chunks, and does error correction,
* then calls the appropriate callback for the chunk if it is valid.
*/
/* Decode the IHDR chunk */
PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_hIST_SUPPORTED
PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif /* PNG_READ_iCCP_SUPPORTED */
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif /* PNG_READ_sPLT_SUPPORTED */
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_tIME_SUPPORTED
PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
#endif
PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
png_bytep chunk_name));
/* Handle the transformations for reading and writing */
PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
png_uint_32 length));
PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
png_bytep buffer, png_size_t buffer_length));
PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
png_bytep buffer, png_size_t buffer_length));
PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row));
PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
png_infop info_ptr));
PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
png_infop info_ptr));
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
png_infop info_ptr));
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 length));
PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
png_infop info_ptr));
#endif
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
#endif
/* Added at libpng version 1.4.0 */
#ifdef PNG_cHRM_SUPPORTED
PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
png_fixed_point int_white_x, png_fixed_point int_white_y,
png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
png_fixed_point int_blue_y));
#endif
#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_CHECK_cHRM_SUPPORTED
/* Added at libpng version 1.2.34 and 1.4.0 */
PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
unsigned long *hi_product, unsigned long *lo_product));
#endif
#endif
/* Added at libpng version 1.4.0 */
PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type));
/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
png_infop end_info_ptr));
/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
extern void png_write_destroy PNGARG((png_structp png_ptr));
#ifdef USE_FAR_KEYWORD /* memory model conversion function */
extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
int check));
#endif /* USE_FAR_KEYWORD */
/* Define PNG_DEBUG at compile time for debugging information. Higher
* numbers for PNG_DEBUG mean more debugging information. This has
* only been added since version 0.95 so it is not implemented throughout
* libpng yet, but more support will be added as needed.
*/
#ifdef PNG_DEBUG
#if (PNG_DEBUG > 0)
#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
#include <crtdbg.h>
#if (PNG_DEBUG > 1)
#ifndef _DEBUG
# define _DEBUG
#endif
#ifndef png_debug
#define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
#endif
#ifndef png_debug1
#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
#endif
#ifndef png_debug2
#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
#endif
#endif
#else /* PNG_DEBUG_FILE || !_MSC_VER */
#ifndef PNG_DEBUG_FILE
#define PNG_DEBUG_FILE stderr
#endif /* PNG_DEBUG_FILE */
#if (PNG_DEBUG > 1)
/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
* non-ISO compilers
*/
# ifdef __STDC__
# ifndef png_debug
# define png_debug(l,m) \
{ \
int num_tabs=l; \
fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
}
# endif
# ifndef png_debug1
# define png_debug1(l,m,p1) \
{ \
int num_tabs=l; \
fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
}
# endif
# ifndef png_debug2
# define png_debug2(l,m,p1,p2) \
{ \
int num_tabs=l; \
fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
}
# endif
# else /* __STDC __ */
# ifndef png_debug
# define png_debug(l,m) \
{ \
int num_tabs=l; \
char format[256]; \
snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
m,PNG_STRING_NEWLINE); \
fprintf(PNG_DEBUG_FILE,format); \
}
# endif
# ifndef png_debug1
# define png_debug1(l,m,p1) \
{ \
int num_tabs=l; \
char format[256]; \
snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
m,PNG_STRING_NEWLINE); \
fprintf(PNG_DEBUG_FILE,format,p1); \
}
# endif
# ifndef png_debug2
# define png_debug2(l,m,p1,p2) \
{ \
int num_tabs=l; \
char format[256]; \
snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
m,PNG_STRING_NEWLINE); \
fprintf(PNG_DEBUG_FILE,format,p1,p2); \
}
# endif
# endif /* __STDC __ */
#endif /* (PNG_DEBUG > 1) */
#endif /* _MSC_VER */
#endif /* (PNG_DEBUG > 0) */
#endif /* PNG_DEBUG */
#ifndef png_debug
#define png_debug(l, m)
#endif
#ifndef png_debug1
#define png_debug1(l, m, p1)
#endif
#ifndef png_debug2
#define png_debug2(l, m, p1, p2)
#endif
/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
#ifdef __cplusplus
}
#endif
#endif /* PNG_VERSION_INFO_ONLY */
#endif /* PNGPRIV_H */

393
GRRLIB/lib/png/pngread.c
View file

@ -1,8 +1,8 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -14,10 +14,10 @@
* read a PNG file or stream.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
/* Create a PNG structure for reading, and allocate any memory needed. */
@ -28,7 +28,7 @@ png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
warn_fn, NULL, NULL, NULL));
}
/* Alternate create PNG structure for reading, and allocate any memory needed. */
@ -43,6 +43,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
volatile
#endif
png_structp png_ptr;
volatile int png_cleanup_needed = 0;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
@ -56,7 +57,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
(png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
malloc_fn, mem_ptr);
#else
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
#endif
@ -67,27 +68,22 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
/* Added at libpng-1.4.0 */
png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
encounter a png_error() will longjmp here. Since the jmpbuf is
then meaningless we abort instead of returning. */
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
#else
if (setjmp(png_ptr->jmpbuf))
if (setjmp(png_jmpbuf(png_ptr))) /* Sets longjmp to match setjmp */
#endif
{
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
(png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
return (NULL);
}
PNG_ABORT();
#ifdef USE_FAR_KEYWORD
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
#endif
#endif /* PNG_SETJMP_SUPPORTED */
@ -121,7 +117,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char msg[80];
if (user_png_ver)
{
@ -138,194 +134,64 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
png_warning(png_ptr,
"Incompatible libpng version in application and library");
png_cleanup_needed = 1;
}
}
if (!png_cleanup_needed)
{
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
png_ptr->zbuf_size);
if (png_ptr->zbuf == NULL)
png_cleanup_needed = 1;
}
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
if (!png_cleanup_needed)
{
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_MEM_ERROR:
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error");
break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error");
break;
default: png_error(png_ptr, "Unknown zlib error");
case Z_STREAM_ERROR: png_warning(png_ptr, "zlib memory error");
png_cleanup_needed = 1; break;
case Z_VERSION_ERROR: png_warning(png_ptr, "zlib version error");
png_cleanup_needed = 1; break;
default: png_warning(png_ptr, "Unknown zlib error");
png_cleanup_needed = 1;
}
}
if (png_cleanup_needed)
{
/* Clean up PNG structure and deallocate any memory. */
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
(png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
return (NULL);
}
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL);
png_set_read_fn(png_ptr, NULL, NULL);
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
encounter a png_error() will longjmp here. Since the jmpbuf is
then meaningless we abort instead of returning. */
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
PNG_ABORT();
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
#else
if (setjmp(png_ptr->jmpbuf))
PNG_ABORT();
#endif
#endif /* PNG_SETJMP_SUPPORTED */
return (png_ptr);
}
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* Initialize PNG structure for reading, and allocate any memory needed.
* This interface is deprecated in favour of the png_create_read_struct(),
* and it will disappear as of libpng-1.3.0.
*/
#undef png_read_init
void PNGAPI
png_read_init(png_structp png_ptr)
{
/* We only come here via pre-1.0.7-compiled applications */
png_read_init_2(png_ptr, "1.0.6 or earlier", 0, 0);
}
void PNGAPI
png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size, png_size_t png_info_size)
{
/* We only come here via pre-1.0.12-compiled applications */
if (png_ptr == NULL)
return;
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
if (png_sizeof(png_struct) > png_struct_size ||
png_sizeof(png_info) > png_info_size)
{
char msg[80];
png_ptr->warning_fn = NULL;
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
}
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The png struct allocated by the application for reading is too small.");
}
if (png_sizeof(png_info) > png_info_size)
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The info struct allocated by application for reading is too small.");
}
png_read_init_3(&png_ptr, user_png_ver, png_struct_size);
}
#endif /* PNG_1_0_X || PNG_1_2_X */
void PNGAPI
png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
int i = 0;
png_structp png_ptr=*ptr_ptr;
if (png_ptr == NULL)
return;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
{
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_read_init() and should be recompiled.");
break;
#endif
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_read_init_3");
#ifdef PNG_SETJMP_SUPPORTED
/* Save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_destroy_struct(png_ptr);
*ptr_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
png_ptr = *ptr_ptr;
}
/* Reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof(png_struct));
#ifdef PNG_SETJMP_SUPPORTED
/* Restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
#endif
/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); break;
default: png_error(png_ptr, "Unknown zlib error");
}
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL);
}
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the information before the actual image data. This has been
@ -350,6 +216,10 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_size_t num_checked = png_ptr->sig_bytes,
num_to_check = 8 - num_checked;
#ifdef PNG_IO_STATE_SUPPORTED
png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE;
#endif
png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
png_ptr->sig_bytes = 8;
@ -367,63 +237,61 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
for (;;)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IHDR;
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
PNG_IHDR;
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
PNG_sCAL;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
PNG_sPLT;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
PNG_sRGB;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
png_uint_32 length = png_read_chunk_header(png_ptr);
PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
@ -584,7 +452,7 @@ png_start_read_image(png_structp png_ptr)
void PNGAPI
png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
{
PNG_CONST PNG_IDAT;
PNG_IDAT;
PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
0xff};
PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
@ -594,7 +462,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
return;
png_debug2(1, "in png_read_row (row %lu, pass %d)",
png_ptr->row_number, png_ptr->pass);
(unsigned long) png_ptr->row_number, png_ptr->pass);
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
@ -603,31 +471,31 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
/* Check for transforms that have been set but were defined out */
#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO)
png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && !defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP)
png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK)
png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT)
png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR)
png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined");
#endif
}
@ -738,7 +606,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
{
if (png_ptr->zstream.avail_out || png_ptr->zstream.avail_in ||
png_ptr->idat_size)
png_error(png_ptr, "Extra compressed data");
png_benign_error(png_ptr, "Extra compressed data");
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
@ -762,8 +630,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_ptr->row_buf + 1, png_ptr->prev_row + 1,
(int)(png_ptr->row_buf[0]));
png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
png_ptr->rowbytes + 1);
png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
@ -863,14 +730,14 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
for (i = 0; i < num_rows; i++)
{
png_bytep rptr = *rp;
png_read_row(png_ptr, rptr, png_bytep_NULL);
png_read_row(png_ptr, rptr, NULL);
rp++;
}
else if (dp != NULL)
for (i = 0; i < num_rows; i++)
{
png_bytep dptr = *dp;
png_read_row(png_ptr, png_bytep_NULL, dptr);
png_read_row(png_ptr, NULL, dptr);
dp++;
}
}
@ -906,7 +773,7 @@ png_read_image(png_structp png_ptr, png_bytepp image)
#else
if (png_ptr->interlaced)
png_error(png_ptr,
"Cannot read interlaced image -- interlace handler disabled.");
"Cannot read interlaced image -- interlace handler disabled");
pass = 1;
#endif
@ -919,7 +786,7 @@ png_read_image(png_structp png_ptr, png_bytepp image)
rp = image;
for (i = 0; i < image_height; i++)
{
png_read_row(png_ptr, *rp, png_bytep_NULL);
png_read_row(png_ptr, *rp, NULL);
rp++;
}
}
@ -942,63 +809,61 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
do
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IHDR;
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
PNG_IHDR;
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
PNG_sCAL;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
PNG_sPLT;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
PNG_sRGB;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
png_uint_32 length = png_read_chunk_header(png_ptr);
PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
@ -1012,7 +877,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
if (!png_memcmp(chunk_name, png_IDAT, 4))
{
if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
png_error(png_ptr, "Too many IDAT's found");
png_benign_error(png_ptr, "Too many IDATs found");
}
png_handle_unknown(png_ptr, info_ptr, length);
if (!png_memcmp(chunk_name, png_PLTE, 4))
@ -1025,7 +890,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
* read, but not after other chunks have been read.
*/
if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
png_error(png_ptr, "Too many IDAT's found");
png_benign_error(png_ptr, "Too many IDATs found");
png_crc_finish(png_ptr, length);
}
else if (!png_memcmp(chunk_name, png_PLTE, 4))
@ -1214,37 +1079,19 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_free(png_ptr, png_ptr->gamma_from_1);
png_free(png_ptr, png_ptr->gamma_to_1);
#endif
#ifdef PNG_FREE_ME_SUPPORTED
if (png_ptr->free_me & PNG_FREE_PLTE)
png_zfree(png_ptr, png_ptr->palette);
png_ptr->free_me &= ~PNG_FREE_PLTE;
#else
if (png_ptr->flags & PNG_FLAG_FREE_PLTE)
png_zfree(png_ptr, png_ptr->palette);
png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
#endif
#if defined(PNG_tRNS_SUPPORTED) || \
defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_FREE_ME_SUPPORTED
if (png_ptr->free_me & PNG_FREE_TRNS)
png_free(png_ptr, png_ptr->trans);
png_free(png_ptr, png_ptr->trans_alpha);
png_ptr->free_me &= ~PNG_FREE_TRNS;
#else
if (png_ptr->flags & PNG_FLAG_FREE_TRNS)
png_free(png_ptr, png_ptr->trans);
png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
#endif
#endif
#ifdef PNG_READ_hIST_SUPPORTED
#ifdef PNG_FREE_ME_SUPPORTED
if (png_ptr->free_me & PNG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
png_ptr->free_me &= ~PNG_FREE_HIST;
#else
if (png_ptr->flags & PNG_FLAG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
#endif
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
if (png_ptr->gamma_16_table != NULL)
@ -1344,12 +1191,6 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL)
return;
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency
*/
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr);
#endif
/* png_read_info() gives us all of the information from the
* PNG file before the first IDAT (image data chunk).
@ -1476,19 +1317,17 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* -------------- image transformations end here ------------------- */
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
#endif
if (info_ptr->row_pointers == NULL)
{
png_uint_32 iptr;
info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
info_ptr->height * png_sizeof(png_bytep));
png_memset(info_ptr->row_pointers, 0, info_ptr->height
* png_sizeof(png_bytep));
for (iptr=0; iptr<info_ptr->height; iptr++)
info_ptr->row_pointers[iptr] = NULL;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_ROWS;
#endif
for (row = 0; row < (int)info_ptr->height; row++)
info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,

30
GRRLIB/lib/png/pngrio.c
View file

@ -1,8 +1,8 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -18,10 +18,10 @@
* libpng use it at run time with png_set_read_fn(...).
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
/* Read the data from whatever input you are using. The default routine
* reads from a file pointer. Note that this routine sometimes gets called
@ -57,13 +57,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
/* fread() returns 0 on error, so it is OK to store this in a png_size_t
* instead of an int, which is what fread() actually returns.
*/
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
check = (png_size_t)fread(data, (png_size_t)1, length,
(png_FILE_p)png_ptr->io_ptr);
#endif
check = fread(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
if (check != length)
png_error(png_ptr, "Read Error");
@ -80,7 +74,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
static void PNGAPI
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
int check;
png_size_t check;
png_byte *n_data;
png_FILE_p io_ptr;
@ -91,12 +85,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)n_data == data)
{
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
check = fread(n_data, 1, length, io_ptr);
#endif
}
else
{
@ -107,12 +96,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
err = 0;
#else
err = fread(buf, (png_size_t)1, read, io_ptr);
#endif
err = fread(buf, 1, read, io_ptr);
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
if (err != read)
break;
@ -169,7 +153,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
png_warning(png_ptr,
"It's an error to set both read_data_fn and write_data_fn in the ");
png_warning(png_ptr,
"same structure. Resetting write_data_fn to NULL.");
"same structure. Resetting write_data_fn to NULL");
}
#ifdef PNG_WRITE_FLUSH_SUPPORTED

380
GRRLIB/lib/png/pngrtran.c
View file

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.2.42 [January 3, 2010]
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -16,10 +16,10 @@
* in pngtrans.c.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
/* Set the action on getting a CRC error for an ancillary or critical chunk. */
void PNGAPI
@ -49,7 +49,7 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action)
case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
png_warning(png_ptr,
"Can't discard critical data on CRC error.");
"Can't discard critical data on CRC error");
case PNG_CRC_ERROR_QUIT: /* Error/quit */
case PNG_CRC_DEFAULT:
@ -610,7 +610,6 @@ png_set_palette_to_rgb(png_structp png_ptr)
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
#ifndef PNG_1_0_X
/* Expand grayscale images of less than 8-bit depth to 8 bits. */
void PNGAPI
png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
@ -623,22 +622,7 @@ png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
png_ptr->transformations |= PNG_EXPAND;
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
#endif
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* Expand grayscale images of less than 8-bit depth to 8 bits. */
/* Deprecated as of libpng-1.2.9 */
void PNGAPI
png_set_gray_1_2_4_to_8(png_structp png_ptr)
{
png_debug(1, "in png_set_gray_1_2_4_to_8");
if (png_ptr == NULL)
return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
}
#endif
/* Expand tRNS chunks to alpha channels. */
@ -706,7 +690,7 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
#else
{
png_warning(png_ptr,
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED.");
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
png_ptr->transformations &= ~PNG_RGB_TO_GRAY;
}
#endif
@ -737,7 +721,6 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
void PNGAPI
png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
@ -752,11 +735,6 @@ png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
png_ptr->transformations |= PNG_USER_TRANSFORM;
png_ptr->read_user_transform_fn = read_user_transform_fn;
#endif
#ifdef PNG_LEGACY_SUPPORTED
if (read_user_transform_fn)
png_warning(png_ptr,
"This version of libpng does not support user transforms");
#endif
}
#endif
@ -768,9 +746,6 @@ png_init_read_transformations(png_structp png_ptr)
{
png_debug(1, "in png_init_read_transformations");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (png_ptr != NULL)
#endif
{
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
|| defined(PNG_READ_GAMMA_SUPPORTED)
@ -819,9 +794,9 @@ png_init_read_transformations(png_structp png_ptr)
= png_ptr->background.blue = png_ptr->background.gray;
if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
{
png_ptr->trans_values.gray *= (png_uint_16)0xff;
png_ptr->trans_values.red = png_ptr->trans_values.green
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
png_ptr->trans_color.gray *= (png_uint_16)0xff;
png_ptr->trans_color.red = png_ptr->trans_color.green
= png_ptr->trans_color.blue = png_ptr->trans_color.gray;
}
break;
@ -831,9 +806,9 @@ png_init_read_transformations(png_structp png_ptr)
= png_ptr->background.blue = png_ptr->background.gray;
if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
{
png_ptr->trans_values.gray *= (png_uint_16)0x55;
png_ptr->trans_values.red = png_ptr->trans_values.green
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
png_ptr->trans_color.gray *= (png_uint_16)0x55;
png_ptr->trans_color.red = png_ptr->trans_color.green
= png_ptr->trans_color.blue = png_ptr->trans_color.gray;
}
break;
@ -843,9 +818,9 @@ png_init_read_transformations(png_structp png_ptr)
= png_ptr->background.blue = png_ptr->background.gray;
if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
{
png_ptr->trans_values.gray *= (png_uint_16)0x11;
png_ptr->trans_values.red = png_ptr->trans_values.green
= png_ptr->trans_values.blue = png_ptr->trans_values.gray;
png_ptr->trans_color.gray *= (png_uint_16)0x11;
png_ptr->trans_color.red = png_ptr->trans_color.green
= png_ptr->trans_color.blue = png_ptr->trans_color.gray;
}
break;
@ -879,7 +854,7 @@ png_init_read_transformations(png_structp png_ptr)
int i, istop;
istop=(int)png_ptr->num_trans;
for (i=0; i<istop; i++)
png_ptr->trans[i] = (png_byte)(255 - png_ptr->trans[i]);
png_ptr->trans_alpha[i] = (png_byte)(255 - png_ptr->trans_alpha[i]);
}
}
#endif
@ -901,7 +876,7 @@ png_init_read_transformations(png_structp png_ptr)
k=0;
for (i=0; i<png_ptr->num_trans; i++)
{
if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff)
if (png_ptr->trans_alpha[i] != 0 && png_ptr->trans_alpha[i] != 0xff)
k=1; /* Partial transparency is present */
}
if (k == 0)
@ -911,7 +886,7 @@ png_init_read_transformations(png_structp png_ptr)
if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
png_ptr->gamma != 0.0)
{
png_build_gamma_table(png_ptr);
png_build_gamma_table(png_ptr, png_ptr->bit_depth);
#ifdef PNG_READ_BACKGROUND_SUPPORTED
if (png_ptr->transformations & PNG_BACKGROUND)
@ -968,42 +943,42 @@ png_init_read_transformations(png_structp png_ptr)
else
{
back.red = (png_byte)(pow(
(double)png_ptr->background.red/255, gs) * 255.0 + .5);
(double)png_ptr->background.red/255.0, gs) * 255.0 + .5);
back.green = (png_byte)(pow(
(double)png_ptr->background.green/255, gs) * 255.0 + .5);
(double)png_ptr->background.green/255.0, gs) * 255.0 + .5);
back.blue = (png_byte)(pow(
(double)png_ptr->background.blue/255, gs) * 255.0 + .5);
(double)png_ptr->background.blue/255.0, gs) * 255.0 + .5);
}
back_1.red = (png_byte)(pow(
(double)png_ptr->background.red/255, g) * 255.0 + .5);
(double)png_ptr->background.red/255.0, g) * 255.0 + .5);
back_1.green = (png_byte)(pow(
(double)png_ptr->background.green/255, g) * 255.0 + .5);
(double)png_ptr->background.green/255.0, g) * 255.0 + .5);
back_1.blue = (png_byte)(pow(
(double)png_ptr->background.blue/255, g) * 255.0 + .5);
(double)png_ptr->background.blue/255.0, g) * 255.0 + .5);
}
for (i = 0; i < num_palette; i++)
{
if (i < (int)png_ptr->num_trans && png_ptr->trans[i] != 0xff)
if (i < (int)png_ptr->num_trans && png_ptr->trans_alpha[i] != 0xff)
{
if (png_ptr->trans[i] == 0)
if (png_ptr->trans_alpha[i] == 0)
{
palette[i] = back;
}
else /* if (png_ptr->trans[i] != 0xff) */
else /* if (png_ptr->trans_alpha[i] != 0xff) */
{
png_byte v, w;
v = png_ptr->gamma_to_1[palette[i].red];
png_composite(w, v, png_ptr->trans[i], back_1.red);
png_composite(w, v, png_ptr->trans_alpha[i], back_1.red);
palette[i].red = png_ptr->gamma_from_1[w];
v = png_ptr->gamma_to_1[palette[i].green];
png_composite(w, v, png_ptr->trans[i], back_1.green);
png_composite(w, v, png_ptr->trans_alpha[i], back_1.green);
palette[i].green = png_ptr->gamma_from_1[w];
v = png_ptr->gamma_to_1[palette[i].blue];
png_composite(w, v, png_ptr->trans[i], back_1.blue);
png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue);
palette[i].blue = png_ptr->gamma_from_1[w];
}
}
@ -1123,19 +1098,19 @@ png_init_read_transformations(png_structp png_ptr)
for (i = 0; i < istop; i++)
{
if (png_ptr->trans[i] == 0)
if (png_ptr->trans_alpha[i] == 0)
{
palette[i] = back;
}
else if (png_ptr->trans[i] != 0xff)
else if (png_ptr->trans_alpha[i] != 0xff)
{
/* The png_composite() macro is defined in png.h */
png_composite(palette[i].red, palette[i].red,
png_ptr->trans[i], back.red);
png_ptr->trans_alpha[i], back.red);
png_composite(palette[i].green, palette[i].green,
png_ptr->trans[i], back.green);
png_ptr->trans_alpha[i], back.green);
png_composite(palette[i].blue, palette[i].blue,
png_ptr->trans[i], back.blue);
png_ptr->trans_alpha[i], back.blue);
}
}
@ -1289,10 +1264,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
{
info_ptr->channels++;
/* If adding a true alpha channel not just filler */
#ifndef PNG_1_0_X
if (png_ptr->transformations & PNG_ADD_ALPHA)
info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
#endif
}
#endif
@ -1329,7 +1302,7 @@ png_do_read_transformations(png_structp png_ptr)
if (png_ptr->row_buf == NULL)
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char msg[50];
png_snprintf2(msg, 50,
@ -1359,14 +1332,14 @@ png_do_read_transformations(png_structp png_ptr)
if (png_ptr->row_info.color_type == PNG_COLOR_TYPE_PALETTE)
{
png_do_expand_palette(&(png_ptr->row_info), png_ptr->row_buf + 1,
png_ptr->palette, png_ptr->trans, png_ptr->num_trans);
png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
}
else
{
if (png_ptr->num_trans &&
(png_ptr->transformations & PNG_EXPAND_tRNS))
png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
&(png_ptr->trans_values));
&(png_ptr->trans_color));
else
png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
NULL);
@ -1443,7 +1416,7 @@ png_do_read_transformations(png_structp png_ptr)
((png_ptr->num_trans != 0 ) ||
(png_ptr->color_type & PNG_COLOR_MASK_ALPHA)))
png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1,
&(png_ptr->trans_values), &(png_ptr->background)
&(png_ptr->trans_color), &(png_ptr->background)
#ifdef PNG_READ_GAMMA_SUPPORTED
, &(png_ptr->background_1),
png_ptr->gamma_table, png_ptr->gamma_from_1,
@ -1577,11 +1550,7 @@ png_do_unpack(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_unpack");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL && row_info->bit_depth < 8)
#else
if (row_info->bit_depth < 8)
#endif
{
png_uint_32 i;
png_uint_32 row_width=row_info->width;
@ -1671,9 +1640,6 @@ png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits)
png_debug(1, "in png_do_unshift");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL && sig_bits != NULL &&
#endif
row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift[4];
@ -1780,11 +1746,7 @@ png_do_chop(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_chop");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL && row_info->bit_depth == 16)
#else
if (row_info->bit_depth == 16)
#endif
{
png_bytep sp = row;
png_bytep dp = row;
@ -1838,9 +1800,6 @@ png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_read_swap_alpha");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
png_uint_32 row_width = row_info->width;
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
@ -1931,9 +1890,6 @@ png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_read_invert_alpha");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
png_uint_32 row_width = row_info->width;
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
@ -2039,9 +1995,6 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_read_filler");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
if (row_info->bit_depth == 8)
@ -2212,9 +2165,6 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_gray_to_rgb");
if (row_info->bit_depth >= 8 &&
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
!(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
@ -2319,9 +2269,6 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_rgb_to_gray");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
@ -2596,188 +2543,6 @@ png_build_grayscale_palette(int bit_depth, png_colorp palette)
}
}
/* This function is currently unused. Do we really need it? */
#if defined(PNG_READ_DITHER_SUPPORTED) && defined(PNG_CORRECT_PALETTE_SUPPORTED)
void /* PRIVATE */
png_correct_palette(png_structp png_ptr, png_colorp palette,
int num_palette)
{
png_debug(1, "in png_correct_palette");
#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
if (png_ptr->transformations & (PNG_GAMMA | PNG_BACKGROUND))
{
png_color back, back_1;
if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE)
{
back.red = png_ptr->gamma_table[png_ptr->background.red];
back.green = png_ptr->gamma_table[png_ptr->background.green];
back.blue = png_ptr->gamma_table[png_ptr->background.blue];
back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
}
else
{
double g;
g = 1.0 / (png_ptr->background_gamma * png_ptr->screen_gamma);
if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_SCREEN ||
fabs(g - 1.0) < PNG_GAMMA_THRESHOLD)
{
back.red = png_ptr->background.red;
back.green = png_ptr->background.green;
back.blue = png_ptr->background.blue;
}
else
{
back.red =
(png_byte)(pow((double)png_ptr->background.red/255, g) *
255.0 + 0.5);
back.green =
(png_byte)(pow((double)png_ptr->background.green/255, g) *
255.0 + 0.5);
back.blue =
(png_byte)(pow((double)png_ptr->background.blue/255, g) *
255.0 + 0.5);
}
g = 1.0 / png_ptr->background_gamma;
back_1.red =
(png_byte)(pow((double)png_ptr->background.red/255, g) *
255.0 + 0.5);
back_1.green =
(png_byte)(pow((double)png_ptr->background.green/255, g) *
255.0 + 0.5);
back_1.blue =
(png_byte)(pow((double)png_ptr->background.blue/255, g) *
255.0 + 0.5);
}
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
png_uint_32 i;
for (i = 0; i < (png_uint_32)num_palette; i++)
{
if (i < png_ptr->num_trans && png_ptr->trans[i] == 0)
{
palette[i] = back;
}
else if (i < png_ptr->num_trans && png_ptr->trans[i] != 0xff)
{
png_byte v, w;
v = png_ptr->gamma_to_1[png_ptr->palette[i].red];
png_composite(w, v, png_ptr->trans[i], back_1.red);
palette[i].red = png_ptr->gamma_from_1[w];
v = png_ptr->gamma_to_1[png_ptr->palette[i].green];
png_composite(w, v, png_ptr->trans[i], back_1.green);
palette[i].green = png_ptr->gamma_from_1[w];
v = png_ptr->gamma_to_1[png_ptr->palette[i].blue];
png_composite(w, v, png_ptr->trans[i], back_1.blue);
palette[i].blue = png_ptr->gamma_from_1[w];
}
else
{
palette[i].red = png_ptr->gamma_table[palette[i].red];
palette[i].green = png_ptr->gamma_table[palette[i].green];
palette[i].blue = png_ptr->gamma_table[palette[i].blue];
}
}
}
else
{
int i;
for (i = 0; i < num_palette; i++)
{
if (palette[i].red == (png_byte)png_ptr->trans_values.gray)
{
palette[i] = back;
}
else
{
palette[i].red = png_ptr->gamma_table[palette[i].red];
palette[i].green = png_ptr->gamma_table[palette[i].green];
palette[i].blue = png_ptr->gamma_table[palette[i].blue];
}
}
}
}
else
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
if (png_ptr->transformations & PNG_GAMMA)
{
int i;
for (i = 0; i < num_palette; i++)
{
palette[i].red = png_ptr->gamma_table[palette[i].red];
palette[i].green = png_ptr->gamma_table[palette[i].green];
palette[i].blue = png_ptr->gamma_table[palette[i].blue];
}
}
#ifdef PNG_READ_BACKGROUND_SUPPORTED
else
#endif
#endif
#ifdef PNG_READ_BACKGROUND_SUPPORTED
if (png_ptr->transformations & PNG_BACKGROUND)
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
png_color back;
back.red = (png_byte)png_ptr->background.red;
back.green = (png_byte)png_ptr->background.green;
back.blue = (png_byte)png_ptr->background.blue;
for (i = 0; i < (int)png_ptr->num_trans; i++)
{
if (png_ptr->trans[i] == 0)
{
palette[i].red = back.red;
palette[i].green = back.green;
palette[i].blue = back.blue;
}
else if (png_ptr->trans[i] != 0xff)
{
png_composite(palette[i].red, png_ptr->palette[i].red,
png_ptr->trans[i], back.red);
png_composite(palette[i].green, png_ptr->palette[i].green,
png_ptr->trans[i], back.green);
png_composite(palette[i].blue, png_ptr->palette[i].blue,
png_ptr->trans[i], back.blue);
}
}
}
else /* Assume grayscale palette (what else could it be?) */
{
int i;
for (i = 0; i < num_palette; i++)
{
if (i == (png_byte)png_ptr->trans_values.gray)
{
palette[i].red = (png_byte)png_ptr->background.red;
palette[i].green = (png_byte)png_ptr->background.green;
palette[i].blue = (png_byte)png_ptr->background.blue;
}
}
}
}
#endif
}
#endif
#ifdef PNG_READ_BACKGROUND_SUPPORTED
/* Replace any alpha or transparency with the supplied background color.
@ -2786,7 +2551,7 @@ png_correct_palette(png_structp png_ptr, png_colorp palette,
*/
void /* PRIVATE */
png_do_background(png_row_infop row_info, png_bytep row,
png_color_16p trans_values, png_color_16p background
png_color_16p trans_color, png_color_16p background
#ifdef PNG_READ_GAMMA_SUPPORTED
, png_color_16p background_1,
png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
@ -2803,11 +2568,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_background");
if (background != NULL &&
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(!(row_info->color_type & PNG_COLOR_MASK_ALPHA) ||
(row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_values)))
(row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_color)))
{
switch (row_info->color_type)
{
@ -2822,7 +2584,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x01)
== trans_values->gray)
== trans_color->gray)
{
*sp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@ -2848,7 +2610,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x03)
== trans_values->gray)
== trans_color->gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@ -2878,7 +2640,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x03)
== trans_values->gray)
== trans_color->gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@ -2905,7 +2667,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x0f)
== trans_values->gray)
== trans_color->gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@ -2935,7 +2697,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
for (i = 0; i < row_width; i++)
{
if ((png_uint_16)((*sp >> shift) & 0x0f)
== trans_values->gray)
== trans_color->gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@ -2960,7 +2722,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
if (*sp == trans_values->gray)
if (*sp == trans_color->gray)
{
*sp = (png_byte)background->gray;
}
@ -2976,7 +2738,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
if (*sp == trans_values->gray)
if (*sp == trans_color->gray)
{
*sp = (png_byte)background->gray;
}
@ -2996,7 +2758,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
png_uint_16 v;
v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
if (v == trans_values->gray)
if (v == trans_color->gray)
{
/* Background is already in screen gamma */
*sp = (png_byte)((background->gray >> 8) & 0xff);
@ -3019,7 +2781,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
png_uint_16 v;
v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
if (v == trans_values->gray)
if (v == trans_color->gray)
{
*sp = (png_byte)((background->gray >> 8) & 0xff);
*(sp + 1) = (png_byte)(background->gray & 0xff);
@ -3042,9 +2804,9 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp += 3)
{
if (*sp == trans_values->red &&
*(sp + 1) == trans_values->green &&
*(sp + 2) == trans_values->blue)
if (*sp == trans_color->red &&
*(sp + 1) == trans_color->green &&
*(sp + 2) == trans_color->blue)
{
*sp = (png_byte)background->red;
*(sp + 1) = (png_byte)background->green;
@ -3064,9 +2826,9 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp += 3)
{
if (*sp == trans_values->red &&
*(sp + 1) == trans_values->green &&
*(sp + 2) == trans_values->blue)
if (*sp == trans_color->red &&
*(sp + 1) == trans_color->green &&
*(sp + 2) == trans_color->blue)
{
*sp = (png_byte)background->red;
*(sp + 1) = (png_byte)background->green;
@ -3086,8 +2848,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
if (r == trans_values->red && g == trans_values->green &&
b == trans_values->blue)
if (r == trans_color->red && g == trans_color->green &&
b == trans_color->blue)
{
/* Background is already in screen gamma */
*sp = (png_byte)((background->red >> 8) & 0xff);
@ -3121,8 +2883,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
if (r == trans_values->red && g == trans_values->green &&
b == trans_values->blue)
if (r == trans_color->red && g == trans_color->green &&
b == trans_color->blue)
{
*sp = (png_byte)((background->red >> 8) & 0xff);
*(sp + 1) = (png_byte)(background->red & 0xff);
@ -3493,9 +3255,6 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_gamma");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
((row_info->bit_depth <= 8 && gamma_table != NULL) ||
(row_info->bit_depth == 16 && gamma_16_table != NULL)))
{
@ -3672,7 +3431,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
*/
void /* PRIVATE */
png_do_expand_palette(png_row_infop row_info, png_bytep row,
png_colorp palette, png_bytep trans, int num_trans)
png_colorp palette, png_bytep trans_alpha, int num_trans)
{
int shift, value;
png_bytep sp, dp;
@ -3682,9 +3441,6 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_expand_palette");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (row_info->bit_depth < 8)
@ -3767,7 +3523,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
{
case 8:
{
if (trans != NULL)
if (trans_alpha != NULL)
{
sp = row + (png_size_t)row_width - 1;
dp = row + (png_size_t)(row_width << 2) - 1;
@ -3777,7 +3533,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
if ((int)(*sp) >= num_trans)
*dp-- = 0xff;
else
*dp-- = trans[*sp];
*dp-- = trans_alpha[*sp];
*dp-- = palette[*sp].blue;
*dp-- = palette[*sp].green;
*dp-- = palette[*sp].red;
@ -3828,9 +3584,6 @@ png_do_expand(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_expand");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
@ -4040,9 +3793,6 @@ png_do_dither(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_dither");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
palette_lookup && row_info->bit_depth == 8)
@ -4142,6 +3892,7 @@ static PNG_CONST int png_gamma_shift[] =
* AND
* {
* the screen_gamma is known
*
* OR
*
* RGB_to_gray transformation is being performed
@ -4160,11 +3911,11 @@ static PNG_CONST int png_gamma_shift[] =
*/
void /* PRIVATE */
png_build_gamma_table(png_structp png_ptr)
png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
{
png_debug(1, "in png_build_gamma_table");
if (png_ptr->bit_depth <= 8)
if (bit_depth <= 8)
{
int i;
double g;
@ -4387,9 +4138,6 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_read_intrapixel");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;

280
GRRLIB/lib/png/pngrutil.c
View file

@ -1,8 +1,8 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -14,58 +14,21 @@
* libpng itself during the course of reading an image.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
#if defined(_WIN32_WCE) && (_WIN32_WCE<0x500)
# define WIN32_WCE_OLD
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
# ifdef WIN32_WCE_OLD
/* The strtod() function is not supported on WindowsCE */
__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, char **endptr)
{
double result = 0;
int len;
wchar_t *str, *end;
len = MultiByteToWideChar(CP_ACP, 0, nptr, -1, NULL, 0);
str = (wchar_t *)png_malloc(png_ptr, len * png_sizeof(wchar_t));
if ( NULL != str )
{
MultiByteToWideChar(CP_ACP, 0, nptr, -1, str, len);
result = wcstod(str, &end);
len = WideCharToMultiByte(CP_ACP, 0, end, -1, NULL, 0, NULL, NULL);
*endptr = (char *)nptr + (png_strlen(nptr) - len + 1);
png_free(png_ptr, str);
}
return result;
}
# else
# define png_strtod(p,a,b) strtod(a,b)
# endif
#endif
png_uint_32 PNGAPI
png_get_uint_31(png_structp png_ptr, png_bytep buf)
{
#ifdef PNG_READ_BIG_ENDIAN_SUPPORTED
png_uint_32 i = png_get_uint_32(buf);
#else
/* Avoid an extra function call by inlining the result. */
png_uint_32 i = ((png_uint_32)(*buf) << 24) +
((png_uint_32)(*(buf + 1)) << 16) +
((png_uint_32)(*(buf + 2)) << 8) +
(png_uint_32)(*(buf + 3));
#endif
if (i > PNG_UINT_31_MAX)
png_error(png_ptr, "PNG unsigned integer out of range.");
png_error(png_ptr, "PNG unsigned integer out of range");
return (i);
}
#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
#ifndef PNG_USE_READ_MACROS
/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
png_uint_32 PNGAPI
png_get_uint_32(png_bytep buf)
@ -102,7 +65,7 @@ png_get_uint_16(png_bytep buf)
return (i);
}
#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */
#endif /* PNG_USE_READ_MACROS */
/* Read the chunk header (length + type name).
* Put the type name into png_ptr->chunk_name, and return the length.
@ -113,6 +76,13 @@ png_read_chunk_header(png_structp png_ptr)
png_byte buf[8];
png_uint_32 length;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk header is being read.
* PNG_IO_CHUNK_HDR requires a single I/O call.
*/
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
#endif
/* Read the length and the chunk name */
png_read_data(png_ptr, buf, 8);
length = png_get_uint_31(png_ptr, buf);
@ -130,6 +100,13 @@ png_read_chunk_header(png_structp png_ptr)
/* Check to see if chunk name is valid */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be read.
* PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
*/
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
#endif
return length;
}
@ -174,7 +151,8 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip)
}
else
{
png_chunk_error(png_ptr, "CRC error");
png_chunk_benign_error(png_ptr, "CRC error");
return (0);
}
return (1);
}
@ -204,6 +182,12 @@ png_crc_error(png_structp png_ptr)
need_crc = 0;
}
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk CRC is being read */
/* PNG_IO_CHUNK_CRC requires the I/O to be done at once */
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
#endif
png_read_data(png_ptr, crc_bytes, 4);
if (need_crc)
@ -291,7 +275,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr,
"Not enough memory to decompress chunk.");
"Not enough memory to decompress chunk");
}
png_memcpy(text + prefix_size, png_ptr->zbuf,
text_size - prefix_size);
@ -303,16 +287,30 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_charp tmp;
tmp = text;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if ((png_ptr->user_chunk_cache_max != 0) &&
(--png_ptr->user_chunk_cache_max == 0))
{
png_warning(png_ptr, "No space in chunk cache");
text = NULL;
}
else
{
#endif
text = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)(text_size +
(png_size_t)(text_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
}
#endif
if (text == NULL)
{
png_free(png_ptr, tmp);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr,
"Not enough memory to decompress chunk..");
"Not enough memory to decompress chunk");
}
png_memcpy(text, tmp, text_size);
png_free(png_ptr, tmp);
@ -332,7 +330,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
if (ret != Z_STREAM_END)
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char umsg[52];
if (ret == Z_BUF_ERROR)
@ -363,7 +361,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr, "Not enough memory for text.");
png_error(png_ptr, "Not enough memory for text");
}
png_memcpy(text, png_ptr->chunkdata, prefix_size);
}
@ -379,7 +377,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char umsg[50];
png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
@ -572,7 +570,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)
{
png_chunk_error(png_ptr, "CRC error");
png_chunk_benign_error(png_ptr, "CRC error");
}
else
{
@ -1110,7 +1108,7 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_warning(png_ptr, "Ignoring truncated iCCP profile.");
png_warning(png_ptr, "Ignoring truncated iCCP profile");
return;
}
@ -1137,6 +1135,24 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_sPLT");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for sPLT");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sPLT");
else if (png_ptr->mode & PNG_HAVE_IDAT)
@ -1301,7 +1317,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_read(png_ptr, buf, 2);
png_ptr->num_trans = 1;
png_ptr->trans_values.gray = png_get_uint_16(buf);
png_ptr->trans_color.gray = png_get_uint_16(buf);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
@ -1315,9 +1331,9 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
png_crc_read(png_ptr, buf, (png_size_t)length);
png_ptr->num_trans = 1;
png_ptr->trans_values.red = png_get_uint_16(buf);
png_ptr->trans_values.green = png_get_uint_16(buf + 2);
png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
png_ptr->trans_color.red = png_get_uint_16(buf);
png_ptr->trans_color.green = png_get_uint_16(buf + 2);
png_ptr->trans_color.blue = png_get_uint_16(buf + 4);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
@ -1356,7 +1372,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
&(png_ptr->trans_values));
&(png_ptr->trans_color));
}
#endif
@ -1624,7 +1640,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "No memory for pCAL purpose.");
png_warning(png_ptr, "No memory for pCAL purpose");
return;
}
slength = (png_size_t)length;
@ -1685,12 +1701,12 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(3, "Allocating pCAL parameters array");
params = (png_charpp)png_malloc_warn(png_ptr,
(png_uint_32)(nparams * png_sizeof(png_charp))) ;
(png_size_t)(nparams * png_sizeof(png_charp)));
if (params == NULL)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_warning(png_ptr, "No memory for pCAL params.");
png_warning(png_ptr, "No memory for pCAL params");
return;
}
@ -1793,7 +1809,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr, "Out of memory while processing sCAL chunk width");
return;
}
png_memcpy(swidth, ep, (png_size_t)png_strlen(ep));
png_memcpy(swidth, ep, png_strlen(ep));
#endif
#endif
@ -1828,7 +1844,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr, "Out of memory while processing sCAL chunk height");
return;
}
png_memcpy(sheight, ep, (png_size_t)png_strlen(ep));
png_memcpy(sheight, ep, png_strlen(ep));
#endif
#endif
@ -1923,6 +1939,23 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_tEXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for tEXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before tEXt");
@ -1943,7 +1976,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "No memory to process text chunk.");
png_warning(png_ptr, "No memory to process text chunk");
return;
}
slength = (png_size_t)length;
@ -1967,10 +2000,10 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
text++;
text_ptr = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
if (text_ptr == NULL)
{
png_warning(png_ptr, "Not enough memory to process text chunk.");
png_warning(png_ptr, "Not enough memory to process text chunk");
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
@ -1991,7 +2024,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->chunkdata = NULL;
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to process text chunk.");
png_warning(png_ptr, "Insufficient memory to process text chunk");
}
#endif
@ -2008,6 +2041,23 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_zTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for zTXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before zTXt");
@ -2029,7 +2079,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "Out of memory processing zTXt chunk.");
png_warning(png_ptr, "Out of memory processing zTXt chunk");
return;
}
slength = (png_size_t)length;
@ -2070,10 +2120,10 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
(png_size_t)length, prefix_len, &data_len);
text_ptr = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
if (text_ptr == NULL)
{
png_warning(png_ptr, "Not enough memory to process zTXt chunk.");
png_warning(png_ptr, "Not enough memory to process zTXt chunk");
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
@ -2094,7 +2144,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
if (ret)
png_error(png_ptr, "Insufficient memory to store zTXt chunk.");
png_error(png_ptr, "Insufficient memory to store zTXt chunk");
}
#endif
@ -2112,6 +2162,23 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_iTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for iTXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before iTXt");
@ -2133,7 +2200,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "No memory to process iTXt chunk.");
png_warning(png_ptr, "No memory to process iTXt chunk");
return;
}
slength = (png_size_t)length;
@ -2201,10 +2268,10 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
else
data_len = png_strlen(png_ptr->chunkdata + prefix_len);
text_ptr = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)png_sizeof(png_text));
png_sizeof(png_text));
if (text_ptr == NULL)
{
png_warning(png_ptr, "Not enough memory to process iTXt chunk.");
png_warning(png_ptr, "Not enough memory to process iTXt chunk");
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
@ -2223,7 +2290,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
if (ret)
png_error(png_ptr, "Insufficient memory to store iTXt chunk.");
png_error(png_ptr, "Insufficient memory to store iTXt chunk");
}
#endif
@ -2239,11 +2306,26 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_unknown");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for unknown chunk");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (png_ptr->mode & PNG_HAVE_IDAT)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
#endif
PNG_IDAT;
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */
png_ptr->mode |= PNG_AFTER_IDAT;
}
@ -2934,7 +3016,7 @@ png_read_finish_row(png_structp png_ptr)
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
png_memset_check(png_ptr, png_ptr->prev_row, 0,
png_memset(png_ptr->prev_row, 0,
png_ptr->rowbytes + 1);
do
{
@ -2969,9 +3051,7 @@ png_read_finish_row(png_structp png_ptr)
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
#endif
PNG_IDAT;
char extra;
int ret;
@ -3018,7 +3098,7 @@ png_read_finish_row(png_structp png_ptr)
if (!(png_ptr->zstream.avail_out))
{
png_warning(png_ptr, "Extra compressed data.");
png_warning(png_ptr, "Extra compressed data");
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
@ -3202,39 +3282,47 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_error(png_ptr, "This image requires a row greater than 64KB");
#endif
if (row_bytes + 64 > png_ptr->old_big_row_buf_size)
if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
if (png_ptr->interlaced)
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
row_bytes + 64);
row_bytes + 48);
else
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr,
row_bytes + 64);
png_ptr->old_big_row_buf_size = row_bytes + 64;
row_bytes + 48);
png_ptr->old_big_row_buf_size = row_bytes + 48;
/* Use 32 bytes of padding before and after row_buf. */
#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
/* Use 16-byte aligned memory for row_buf with at least 16 bytes
* of padding before and after row_buf.
*/
png_ptr->row_buf = png_ptr->big_row_buf + 32
- (((png_alloc_size_t)&(png_ptr->big_row_buf[0]) + 15) % 16);
png_ptr->old_big_row_buf_size = row_bytes + 48;
#else
/* Use 32 bytes of padding before and 16 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 32;
png_ptr->old_big_row_buf_size = row_bytes + 64;
#endif
png_ptr->old_big_row_buf_size = row_bytes + 48;
}
#ifdef PNG_MAX_MALLOC_64K
if ((png_uint_32)row_bytes + 1 > (png_uint_32)65536L)
if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
png_error(png_ptr, "This image requires a row greater than 64KB");
#endif
if ((png_uint_32)row_bytes > (png_uint_32)(PNG_SIZE_MAX - 1))
png_error(png_ptr, "Row has too many bytes to allocate in memory.");
if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
png_error(png_ptr, "Row has too many bytes to allocate in memory");
if (row_bytes + 1 > png_ptr->old_prev_row_size)
if (png_ptr->rowbytes + 1 > png_ptr->old_prev_row_size)
{
png_free(png_ptr, png_ptr->prev_row);
png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
row_bytes + 1));
png_memset_check(png_ptr, png_ptr->prev_row, 0, row_bytes + 1);
png_ptr->old_prev_row_size = row_bytes + 1;
png_ptr->rowbytes + 1));
png_ptr->old_prev_row_size = png_ptr->rowbytes + 1;
}
png_ptr->rowbytes = row_bytes;
png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
png_debug1(3, "width = %lu,", png_ptr->width);
png_debug1(3, "height = %lu,", png_ptr->height);

191
GRRLIB/lib/png/pngset.c
View file

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.2.42 [January 3, 2010]
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -16,10 +16,10 @@
* info struct and allows us to change the structure in the future.
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
@ -192,21 +192,19 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
> PNG_MAX_PALETTE_LENGTH)
{
png_warning(png_ptr,
"Invalid palette size, hIST allocation skipped.");
"Invalid palette size, hIST allocation skipped");
return;
}
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
#endif
/* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
* version 1.2.1
*/
png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
(png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)));
PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16));
if (png_ptr->hist == NULL)
{
png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
png_warning(png_ptr, "Insufficient memory for hIST chunk data");
return;
}
@ -215,11 +213,7 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
info_ptr->hist = png_ptr->hist;
info_ptr->valid |= PNG_INFO_hIST;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_HIST;
#else
png_ptr->flags |= PNG_FLAG_FREE_HIST;
#endif
}
#endif
@ -263,7 +257,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
- 1 /* filter byte */
- 7*8 /* rounding of width to multiple of 8 pixels */
- 8) /* extra max_pixel_depth pad */
info_ptr->rowbytes = (png_size_t)0;
info_ptr->rowbytes = 0;
else
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
}
@ -291,7 +285,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
png_charp units, png_charpp params)
{
png_uint_32 length;
png_size_t length;
int i;
png_debug1(1, "in %s storage function", "pCAL");
@ -305,10 +299,10 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length);
if (info_ptr->pcal_purpose == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL purpose.");
png_warning(png_ptr, "Insufficient memory for pCAL purpose");
return;
}
png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length);
png_memcpy(info_ptr->pcal_purpose, purpose, length);
png_debug(3, "storing X0, X1, type, and nparams in info");
info_ptr->pcal_X0 = X0;
@ -322,16 +316,16 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length);
if (info_ptr->pcal_units == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL units.");
png_warning(png_ptr, "Insufficient memory for pCAL units");
return;
}
png_memcpy(info_ptr->pcal_units, units, (png_size_t)length);
png_memcpy(info_ptr->pcal_units, units, length);
info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
(png_uint_32)((nparams + 1) * png_sizeof(png_charp)));
(png_size_t)((nparams + 1) * png_sizeof(png_charp)));
if (info_ptr->pcal_params == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL params.");
png_warning(png_ptr, "Insufficient memory for pCAL params");
return;
}
@ -345,16 +339,14 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
if (info_ptr->pcal_params[i] == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL parameter.");
png_warning(png_ptr, "Insufficient memory for pCAL parameter");
return;
}
png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length);
png_memcpy(info_ptr->pcal_params[i], params[i], length);
}
info_ptr->valid |= PNG_INFO_pCAL;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_PCAL;
#endif
}
#endif
@ -381,7 +373,7 @@ void PNGAPI
png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
int unit, png_charp swidth, png_charp sheight)
{
png_uint_32 length;
png_size_t length;
png_debug1(1, "in %s storage function", "sCAL");
@ -397,10 +389,10 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
if (info_ptr->scal_s_width == NULL)
{
png_warning(png_ptr,
"Memory allocation failed while processing sCAL.");
"Memory allocation failed while processing sCAL");
return;
}
png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
png_memcpy(info_ptr->scal_s_width, swidth, length);
length = png_strlen(sheight) + 1;
png_debug1(3, "allocating unit for info (%u bytes)",
@ -411,14 +403,12 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
png_free (png_ptr, info_ptr->scal_s_width);
info_ptr->scal_s_width = NULL;
png_warning(png_ptr,
"Memory allocation failed while processing sCAL.");
"Memory allocation failed while processing sCAL");
return;
}
png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
png_memcpy(info_ptr->scal_s_height, sheight, length);
info_ptr->valid |= PNG_INFO_sCAL;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_SCAL;
#endif
}
#endif
#endif
@ -466,9 +456,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
#endif
/* 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
@ -480,11 +468,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_PLTE;
#else
png_ptr->flags |= PNG_FLAG_FREE_PLTE;
#endif
info_ptr->valid |= PNG_INFO_PLTE;
}
@ -608,7 +592,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
if (new_iccp_name == NULL)
{
png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
png_warning(png_ptr, "Insufficient memory to process iCCP chunk");
return;
}
png_memcpy(new_iccp_name, name, length);
@ -617,7 +601,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
{
png_free (png_ptr, new_iccp_name);
png_warning(png_ptr,
"Insufficient memory to process iCCP profile.");
"Insufficient memory to process iCCP profile");
return;
}
png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
@ -631,9 +615,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
* does not have to change if we introduce multiple compression types
*/
info_ptr->iccp_compression = (png_byte)compression_type;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_ICCP;
#endif
info_ptr->valid |= PNG_INFO_iCCP;
}
#endif
@ -676,7 +658,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
info_ptr->max_text = info_ptr->num_text + num_text + 8;
old_text = info_ptr->text;
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
(png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
{
png_free(png_ptr, old_text);
@ -691,12 +673,10 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
info_ptr->max_text = num_text + 8;
info_ptr->num_text = 0;
info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
(png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
(png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
return(1);
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TEXT;
#endif
}
png_debug1(3, "allocated %d entries for info_ptr->text",
info_ptr->max_text);
@ -734,7 +714,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
#else /* PNG_iTXt_SUPPORTED */
{
png_warning(png_ptr, "iTXt chunk not supported.");
png_warning(png_ptr, "iTXt chunk not supported");
continue;
}
#endif
@ -757,12 +737,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
textp->key = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)
(png_size_t)
(key_len + text_length + lang_len + lang_key_len + 4));
if (textp->key == NULL)
return(1);
png_debug2(2, "Allocated %lu bytes at %x in png_set_text",
(png_uint_32)
(unsigned long)(png_uint_32)
(key_len + lang_len + lang_key_len + text_length + 4),
(int)textp->key);
@ -833,43 +813,41 @@ png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
#ifdef PNG_tRNS_SUPPORTED
void PNGAPI
png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep trans, int num_trans, png_color_16p trans_values)
png_bytep trans_alpha, int num_trans, png_color_16p trans_color)
{
png_debug1(1, "in %s storage function", "tRNS");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (trans != NULL)
if (trans_alpha != NULL)
{
/* It may not actually be necessary to set png_ptr->trans here;
/* It may not actually be necessary to set png_ptr->trans_alpha here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
#endif
/* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
(png_uint_32)PNG_MAX_PALETTE_LENGTH);
png_ptr->trans_alpha = info_ptr->trans_alpha = (png_bytep)png_malloc(png_ptr,
(png_size_t)PNG_MAX_PALETTE_LENGTH);
if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
}
if (trans_values != NULL)
if (trans_color != NULL)
{
int sample_max = (1 << info_ptr->bit_depth);
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_values->gray > sample_max) ||
(int)trans_color->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
((int)trans_values->red > sample_max ||
(int)trans_values->green > sample_max ||
(int)trans_values->blue > sample_max)))
((int)trans_color->red > sample_max ||
(int)trans_color->green > sample_max ||
(int)trans_color->blue > sample_max)))
png_warning(png_ptr,
"tRNS chunk has out-of-range samples for bit_depth");
png_memcpy(&(info_ptr->trans_values), trans_values,
png_memcpy(&(info_ptr->trans_color), trans_color,
png_sizeof(png_color_16));
if (num_trans == 0)
num_trans = 1;
@ -879,11 +857,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
if (num_trans != 0)
{
info_ptr->valid |= PNG_INFO_tRNS;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TRNS;
#else
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
#endif
}
}
#endif
@ -908,10 +882,10 @@ png_set_sPLT(png_structp png_ptr,
np = (png_sPLT_tp)png_malloc_warn(png_ptr,
(info_ptr->splt_palettes_num + nentries) *
(png_uint_32)png_sizeof(png_sPLT_t));
(png_size_t)png_sizeof(png_sPLT_t));
if (np == NULL)
{
png_warning(png_ptr, "No memory for sPLT palettes.");
png_warning(png_ptr, "No memory for sPLT palettes");
return;
}
@ -927,7 +901,7 @@ png_set_sPLT(png_structp png_ptr,
png_uint_32 length;
length = png_strlen(from->name) + 1;
to->name = (png_charp)png_malloc_warn(png_ptr, length);
to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length);
if (to->name == NULL)
{
png_warning(png_ptr,
@ -936,7 +910,7 @@ png_set_sPLT(png_structp png_ptr,
}
png_memcpy(to->name, from->name, length);
to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
(png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
(png_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
if (to->entries == NULL)
{
png_warning(png_ptr,
@ -954,9 +928,7 @@ png_set_sPLT(png_structp png_ptr,
info_ptr->splt_palettes = np;
info_ptr->splt_palettes_num += nentries;
info_ptr->valid |= PNG_INFO_sPLT;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_SPLT;
#endif
}
#endif /* PNG_sPLT_SUPPORTED */
@ -972,12 +944,12 @@ png_set_unknown_chunks(png_structp png_ptr,
return;
np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
(png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) *
(png_size_t)((info_ptr->unknown_chunks_num + num_unknowns) *
png_sizeof(png_unknown_chunk)));
if (np == NULL)
{
png_warning(png_ptr,
"Out of memory while processing unknown chunk.");
"Out of memory while processing unknown chunk");
return;
}
@ -1003,11 +975,11 @@ png_set_unknown_chunks(png_structp png_ptr,
else
{
to->data = (png_bytep)png_malloc_warn(png_ptr,
(png_uint_32)from->size);
(png_size_t)from->size);
if (to->data == NULL)
{
png_warning(png_ptr,
"Out of memory while processing unknown chunk.");
"Out of memory while processing unknown chunk");
to->size = 0;
}
else
@ -1017,9 +989,7 @@ png_set_unknown_chunks(png_structp png_ptr,
info_ptr->unknown_chunks = np;
info_ptr->unknown_chunks_num += num_unknowns;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_UNKN;
#endif
}
void PNGAPI
png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
@ -1031,25 +1001,6 @@ png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
void PNGAPI
png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted)
{
/* This function is deprecated in favor of png_permit_mng_features()
and will be removed from libpng-1.3.0 */
png_debug(1, "in png_permit_empty_plte, DEPRECATED.");
if (png_ptr == NULL)
return;
png_ptr->mng_features_permitted = (png_byte)
((png_ptr->mng_features_permitted & (~PNG_FLAG_MNG_EMPTY_PLTE)) |
((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE)));
}
#endif
#endif
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
@ -1091,7 +1042,7 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
return;
old_num_chunks = png_ptr->num_chunk_list;
new_list=(png_bytep)png_malloc(png_ptr,
(png_uint_32)
(png_size_t)
(5*(num_chunks + old_num_chunks)));
if (png_ptr->chunk_list != NULL)
{
@ -1106,9 +1057,7 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
*p=(png_byte)keep;
png_ptr->num_chunk_list = old_num_chunks + num_chunks;
png_ptr->chunk_list = new_list;
#ifdef PNG_FREE_ME_SUPPORTED
png_ptr->free_me |= PNG_FREE_LIST;
#endif
}
#endif
@ -1147,12 +1096,12 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
#ifdef PNG_WRITE_SUPPORTED
void PNGAPI
png_set_compression_buffer_size(png_structp png_ptr,
png_uint_32 size)
png_size_t size)
{
if (png_ptr == NULL)
return;
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf_size = (png_size_t)size;
png_ptr->zbuf_size = size;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
@ -1167,32 +1116,6 @@ png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
}
#ifndef PNG_1_0_X
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
/* Function was added to libpng 1.2.0 and should always exist by default */
void PNGAPI
png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
{
/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
if (png_ptr != NULL)
png_ptr->asm_flags = 0;
asm_flags = asm_flags; /* Quiet the compiler */
}
/* This function was added to libpng 1.2.0 */
void PNGAPI
png_set_mmx_thresholds (png_structp png_ptr,
png_byte mmx_bitdepth_threshold,
png_uint_32 mmx_rowbytes_threshold)
{
/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
if (png_ptr == NULL)
return;
/* Quiet the compiler */
mmx_bitdepth_threshold = mmx_bitdepth_threshold;
mmx_rowbytes_threshold = mmx_rowbytes_threshold;
}
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
@ -1209,6 +1132,19 @@ png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
png_ptr->user_width_max = user_width_max;
png_ptr->user_height_max = user_height_max;
}
/* This function was added to libpng 1.4.0 */
void PNGAPI
png_set_chunk_cache_max (png_structp png_ptr,
png_uint_32 user_chunk_cache_max)
{
if (png_ptr == NULL)
return;
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
if (user_chunk_cache_max == 0x7fffffffL) /* Unlimited */
png_ptr->user_chunk_cache_max = 0;
else
png_ptr->user_chunk_cache_max = user_chunk_cache_max + 1;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
@ -1224,5 +1160,4 @@ png_set_benign_errors(png_structp png_ptr, int allowed)
png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
}
#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
#endif /* ?PNG_1_0_X */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

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

@ -1,8 +1,8 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -11,10 +11,10 @@
* and license in png.h
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
/* Turn on BGR-to-RGB mapping */
@ -118,11 +118,7 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_FILLER;
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->filler = (png_byte)filler;
#else
png_ptr->filler = (png_uint_16)filler;
#endif
if (filler_loc == PNG_FILLER_AFTER)
png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
else
@ -147,7 +143,6 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
}
}
#ifndef PNG_1_0_X
/* Added to libpng-1.2.7 */
void PNGAPI
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
@ -159,7 +154,6 @@ png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
png_set_filler(png_ptr, filler, filler_loc);
png_ptr->transformations |= PNG_ADD_ALPHA;
}
#endif
#endif
@ -209,10 +203,6 @@ png_do_invert(png_row_infop row_info, png_bytep row)
/* This test removed from libpng version 1.0.13 and 1.2.0:
* if (row_info->bit_depth == 1 &&
*/
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row == NULL || row_info == NULL)
return;
#endif
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
png_bytep rp = row;
@ -263,9 +253,6 @@ png_do_swap(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_swap");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->bit_depth == 16)
{
png_bytep rp = row;
@ -395,9 +382,6 @@ png_do_packswap(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_packswap");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->bit_depth < 8)
{
png_bytep rp, end, table;
@ -427,9 +411,6 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
{
png_debug(1, "in png_do_strip_filler");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
png_bytep sp=row;
png_bytep dp=row;
@ -587,9 +568,6 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_bgr");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
png_uint_32 row_width = row_info->width;
@ -658,7 +636,6 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
void PNGAPI
png_set_user_transform_info(png_structp png_ptr, png_voidp

1
GRRLIB/lib/png/pngvcrd.c
View file

@ -1 +0,0 @@
/* pnggvrd.c was removed from libpng-1.2.20. */

27
GRRLIB/lib/png/pngwio.c
View file

@ -1,8 +1,8 @@
/* pngwio.c - functions for data output
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -18,10 +18,10 @@
* them at run time with png_set_write_fn(...).
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
/* Write the data to whatever output you are using. The default routine
* writes to a file pointer. Note that this routine sometimes gets called
@ -53,12 +53,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
if (png_ptr == NULL)
return;
#ifdef _WIN32_WCE
if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
#endif
if (check != length)
png_error(png_ptr, "Write Error");
}
@ -85,12 +80,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)near_data == data)
{
#ifdef _WIN32_WCE
if ( !WriteFile(io_ptr, near_data, length, &check, NULL) )
check = 0;
#else
check = fwrite(near_data, 1, length, io_ptr);
#endif
}
else
{
@ -102,12 +92,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
written = MIN(NEAR_BUF_SIZE, remaining);
png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
#ifdef _WIN32_WCE
if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
err = 0;
#else
err = fwrite(buf, 1, written, io_ptr);
#endif
if (err != written)
break;
@ -142,15 +127,11 @@ png_flush(png_structp png_ptr)
void PNGAPI
png_default_flush(png_structp png_ptr)
{
#ifndef _WIN32_WCE
png_FILE_p io_ptr;
#endif
if (png_ptr == NULL)
return;
#ifndef _WIN32_WCE
io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
fflush(io_ptr);
#endif
}
#endif
#endif
@ -222,7 +203,7 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
png_warning(png_ptr,
"Attempted to set both read_data_fn and write_data_fn in");
png_warning(png_ptr,
"the same structure. Resetting read_data_fn to NULL.");
"the same structure. Resetting read_data_fn to NULL");
}
}

225
GRRLIB/lib/png/pngwrite.c
View file

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.2.42 [January 3, 2010]
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -12,10 +12,10 @@
*/
/* Get internal access to png.h */
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
/* Writes all the PNG information. This is the suggested way to use the
* library. If you have a new chunk to add, make a function to write it,
@ -160,10 +160,10 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
{
int j;
for (j = 0; j<(int)info_ptr->num_trans; j++)
info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
info_ptr->trans_alpha[j] = (png_byte)(255 - info_ptr->trans_alpha[j]);
}
#endif
png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values),
png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
info_ptr->num_trans, info_ptr->color_type);
}
#endif
@ -201,7 +201,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
#endif /* FLOATING_POINT */
#else /* !WRITE_sCAL */
png_warning(png_ptr,
"png_write_sCAL not supported; sCAL chunk not written.");
"png_write_sCAL not supported; sCAL chunk not written");
#endif /* WRITE_sCAL */
#endif /* sCAL */
@ -458,7 +458,7 @@ png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
warn_fn, NULL, NULL, NULL));
}
/* Alternate initialize png_ptr structure, and allocate any memory needed */
@ -468,6 +468,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_malloc_ptr malloc_fn, png_free_ptr free_fn)
{
#endif /* PNG_USER_MEM_SUPPORTED */
volatile int png_cleanup_needed = 0;
#ifdef PNG_SETJMP_SUPPORTED
volatile
#endif
@ -497,25 +498,18 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
encounter a png_error() will longjmp here. Since the jmpbuf is
then meaningless we abort instead of returning. */
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
#else
if (setjmp(png_ptr->jmpbuf))
if (setjmp(png_jmpbuf(png_ptr))) /* sets longjmp to match setjmp */
#endif
{
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
(png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
return (NULL);
}
#ifdef USE_FAR_KEYWORD
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
#endif
PNG_ABORT();
#endif
#ifdef PNG_USER_MEM_SUPPORTED
@ -544,7 +538,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char msg[80];
if (user_png_ver)
{
@ -561,168 +555,45 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
png_warning(png_ptr,
"Incompatible libpng version in application and library");
png_cleanup_needed = 1;
}
}
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
if (!png_cleanup_needed)
{
png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
png_ptr->zbuf_size);
if (png_ptr->zbuf == NULL)
png_cleanup_needed = 1;
}
if (png_cleanup_needed)
{
/* Clean up PNG structure and deallocate any memory. */
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
(png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
return (NULL);
}
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
png_set_write_fn(png_ptr, NULL, NULL, NULL);
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, png_doublep_NULL, png_doublep_NULL);
1, NULL, NULL);
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then
* encounter a png_error() will longjmp here. Since the jmpbuf is
* then meaningless we abort instead of returning.
*/
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
PNG_ABORT();
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
#else
if (setjmp(png_ptr->jmpbuf))
PNG_ABORT();
#endif
#endif
return (png_ptr);
}
/* Initialize png_ptr structure, and allocate any memory needed */
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* Deprecated. */
#undef png_write_init
void PNGAPI
png_write_init(png_structp png_ptr)
{
/* We only come here via pre-1.0.7-compiled applications */
png_write_init_2(png_ptr, "1.0.6 or earlier", 0, 0);
}
void PNGAPI
png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size, png_size_t png_info_size)
{
/* We only come here via pre-1.0.12-compiled applications */
if (png_ptr == NULL) return;
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
if (png_sizeof(png_struct) > png_struct_size ||
png_sizeof(png_info) > png_info_size)
{
char msg[80];
png_ptr->warning_fn = NULL;
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
}
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The png struct allocated by the application for writing is too small.");
}
if (png_sizeof(png_info) > png_info_size)
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The info struct allocated by the application for writing is too small.");
}
png_write_init_3(&png_ptr, user_png_ver, png_struct_size);
}
#endif /* PNG_1_0_X || PNG_1_2_X */
void PNGAPI
png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
png_structp png_ptr = *ptr_ptr;
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
int i = 0;
if (png_ptr == NULL)
return;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
{
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_write_init() and should be recompiled.");
#endif
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_write_init_3");
#ifdef PNG_SETJMP_SUPPORTED
/* Save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_destroy_struct(png_ptr);
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
*ptr_ptr = png_ptr;
}
/* Reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof(png_struct));
/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
#endif
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, png_doublep_NULL, png_doublep_NULL);
#endif
}
/* Write a few rows of image data. If the image is interlaced,
* either you will have to write the 7 sub images, or, if you
@ -798,36 +669,36 @@ png_write_row(png_structp png_ptr, png_bytep row)
/* Make sure we wrote the header info */
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
png_error(png_ptr,
"png_write_info was never called before png_write_row.");
"png_write_info was never called before png_write_row");
/* Check for transforms that have been set but were defined out */
#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO)
png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP)
png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK)
png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT)
png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR)
png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");
#endif
#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");
png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");
#endif
png_write_start_row(png_ptr);
@ -911,8 +782,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
png_debug1(3, "row_info->rowbytes = %lu", png_ptr->row_info.rowbytes);
/* Copy user's row into buffer, leaving room for filter byte. */
png_memcpy_check(png_ptr, png_ptr->row_buf + 1, row,
png_ptr->row_info.rowbytes);
png_memcpy(png_ptr->row_buf + 1, row, png_ptr->row_info.rowbytes);
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Handle interlacing */
@ -1070,7 +940,6 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);
png_ptr->chunk_list = NULL;
png_ptr->num_chunk_list = 0;
}
#endif

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

@ -1,8 +1,8 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -11,10 +11,10 @@
* and license in png.h
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
/* Transform the data according to the user's wishes. The order of
* transformations is significant.
@ -93,9 +93,6 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
png_debug(1, "in png_do_pack");
if (row_info->bit_depth == 8 &&
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->channels == 1)
{
switch ((int)bit_depth)
@ -219,11 +216,7 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
{
png_debug(1, "in png_do_shift");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL &&
#else
if (
#endif
row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift_start[4], shift_dec[4];
@ -344,9 +337,6 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_swap_alpha");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
@ -433,9 +423,6 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_invert_alpha");
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
@ -525,9 +512,6 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
png_debug(1, "in png_do_write_intrapixel");
if (
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;

147
GRRLIB/lib/png/pngwutil.c
View file

@ -1,8 +1,8 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.2.41 [December 3, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -11,10 +11,10 @@
* and license in png.h
*/
#define PNG_INTERNAL
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
/* Place a 32-bit number into a buffer in PNG byte order. We work
* with unsigned numbers for convenience, although one supported
@ -29,6 +29,7 @@ png_save_uint_32(png_bytep buf, png_uint_32 i)
buf[3] = (png_byte)(i & 0xff);
}
#ifdef PNG_SAVE_INT_32_SUPPORTED
/* The png_save_int_32 function assumes integers are stored in two's
* complement format. If this isn't the case, then this routine needs to
* be modified to write data in two's complement format.
@ -41,6 +42,7 @@ png_save_int_32(png_bytep buf, png_int_32 i)
buf[2] = (png_byte)((i >> 8) & 0xff);
buf[3] = (png_byte)(i & 0xff);
}
#endif
/* Place a 16-bit number into a buffer in PNG byte order.
* The parameter is declared unsigned int, not png_uint_16,
@ -64,6 +66,11 @@ png_write_sig(png_structp png_ptr)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the signature is being written */
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
#endif
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)(8 - png_ptr->sig_bytes));
@ -107,6 +114,12 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
if (png_ptr == NULL)
return;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk header is being written.
* PNG_IO_CHUNK_HDR requires a single I/O call.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
#endif
/* Write the length and the chunk name */
png_save_uint_32(buf, length);
@ -116,7 +129,14 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
png_memcpy(png_ptr->chunk_name, chunk_name, 4);
/* Reset the crc and run it over the chunk name */
png_reset_crc(png_ptr);
png_calculate_crc(png_ptr, chunk_name, (png_size_t)4);
png_calculate_crc(png_ptr, chunk_name, 4);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be written.
* PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
#endif
}
/* Write the data of a PNG chunk started with png_write_chunk_start().
@ -148,6 +168,13 @@ png_write_chunk_end(png_structp png_ptr)
if (png_ptr == NULL) return;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk CRC is being written.
* PNG_IO_CHUNK_CRC requires a single I/O function call.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
#endif
/* Write the crc in a single operation */
png_save_uint_32(buf, png_ptr->crc);
@ -194,7 +221,7 @@ png_text_compress(png_structp png_ptr,
if (compression >= PNG_TEXT_COMPRESSION_LAST)
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char msg[50];
png_snprintf(msg, 50, "Unknown compression type %d", compression);
png_warning(png_ptr, msg);
@ -253,7 +280,7 @@ png_text_compress(png_structp png_ptr,
old_ptr = comp->output_ptr;
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)
(png_alloc_size_t)
(comp->max_output_ptr * png_sizeof(png_charpp)));
png_memcpy(comp->output_ptr, old_ptr, old_max
* png_sizeof(png_charp));
@ -261,14 +288,14 @@ png_text_compress(png_structp png_ptr,
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)
(png_alloc_size_t)
(comp->max_output_ptr * png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
(png_alloc_size_t)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@ -305,7 +332,7 @@ png_text_compress(png_structp png_ptr,
old_ptr = comp->output_ptr;
/* This could be optimized to realloc() */
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)(comp->max_output_ptr *
(png_alloc_size_t)(comp->max_output_ptr *
png_sizeof(png_charp)));
png_memcpy(comp->output_ptr, old_ptr,
old_max * png_sizeof(png_charp));
@ -313,14 +340,14 @@ png_text_compress(png_structp png_ptr,
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)(comp->max_output_ptr *
(png_alloc_size_t)(comp->max_output_ptr *
png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
(png_alloc_size_t)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@ -368,11 +395,9 @@ png_write_compressed_data_out(png_structp png_ptr, compression_state *comp)
png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i],
(png_size_t)png_ptr->zbuf_size);
png_free(png_ptr, comp->output_ptr[i]);
comp->output_ptr[i]=NULL;
}
if (comp->max_output_ptr != 0)
png_free(png_ptr, comp->output_ptr);
comp->output_ptr=NULL;
/* Write anything left in zbuf */
if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size)
png_write_chunk_data(png_ptr, png_ptr->zbuf,
@ -393,9 +418,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
int bit_depth, int color_type, int compression_type, int filter_type,
int interlace_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IHDR;
#endif
int ret;
png_byte buf[13]; /* Buffer to store the IHDR info */
@ -571,9 +594,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
void /* PRIVATE */
png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_PLTE;
#endif
png_uint_32 i;
png_colorp pal_ptr;
png_byte buf[3];
@ -636,9 +657,7 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
void /* PRIVATE */
png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IDAT;
#endif
png_debug(1, "in png_write_IDAT");
@ -691,13 +710,11 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
void /* PRIVATE */
png_write_IEND(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IEND;
#endif
png_debug(1, "in png_write_IEND");
png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL,
png_write_chunk(png_ptr, (png_bytep)png_IEND, NULL,
(png_size_t)0);
png_ptr->mode |= PNG_HAVE_IEND;
}
@ -708,9 +725,7 @@ png_write_IEND(png_structp png_ptr)
void /* PRIVATE */
png_write_gAMA(png_structp png_ptr, double file_gamma)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_gAMA;
#endif
png_uint_32 igamma;
png_byte buf[4];
@ -726,9 +741,7 @@ png_write_gAMA(png_structp png_ptr, double file_gamma)
void /* PRIVATE */
png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_gAMA;
#endif
png_byte buf[4];
png_debug(1, "in png_write_gAMA");
@ -745,9 +758,7 @@ png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
void /* PRIVATE */
png_write_sRGB(png_structp png_ptr, int srgb_intent)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sRGB;
#endif
png_byte buf[1];
png_debug(1, "in png_write_sRGB");
@ -766,9 +777,7 @@ void /* PRIVATE */
png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
png_charp profile, int profile_len)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_iCCP;
#endif
png_size_t name_len;
png_charp new_name;
compression_state comp;
@ -846,14 +855,12 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
void /* PRIVATE */
png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sPLT;
#endif
png_size_t name_len;
png_charp new_name;
png_byte entrybuf[10];
int entry_size = (spalette->depth == 8 ? 6 : 10);
int palette_size = entry_size * spalette->nentries;
png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
png_size_t palette_size = entry_size * spalette->nentries;
png_sPLT_entryp ep;
#ifndef PNG_POINTER_INDEXING_SUPPORTED
int i;
@ -927,9 +934,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
void /* PRIVATE */
png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sBIT;
#endif
png_byte buf[4];
png_size_t size;
@ -987,9 +992,7 @@ png_write_cHRM(png_structp png_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)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_cHRM;
#endif
png_byte buf[32];
png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
@ -1036,9 +1039,7 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
png_fixed_point blue_y)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_cHRM;
#endif
png_byte buf[32];
png_debug(1, "in png_write_cHRM");
@ -1070,12 +1071,10 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
#ifdef PNG_WRITE_tRNS_SUPPORTED
/* Write the tRNS chunk */
void /* PRIVATE */
png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
int num_trans, int color_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tRNS;
#endif
png_byte buf[6];
png_debug(1, "in png_write_tRNS");
@ -1088,7 +1087,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
return;
}
/* Write the chunk out as it is */
png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans,
png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
(png_size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
@ -1129,9 +1128,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
void /* PRIVATE */
png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_bKGD;
#endif
png_byte buf[6];
png_debug(1, "in png_write_bKGD");
@ -1183,9 +1180,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
void /* PRIVATE */
png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_hIST;
#endif
int i;
png_byte buf[3];
@ -1255,7 +1250,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
if ((png_byte)*kp < 0x20 ||
((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
#ifdef PNG_STDIO_SUPPORTED
char msg[40];
png_snprintf(msg, 40,
@ -1327,7 +1322,6 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
if (key_len == 0)
{
png_free(png_ptr, *new_key);
*new_key=NULL;
png_warning(png_ptr, "Zero length keyword");
}
@ -1348,9 +1342,7 @@ void /* PRIVATE */
png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
png_size_t text_len)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tEXt;
#endif
png_size_t key_len;
png_charp new_key;
@ -1389,9 +1381,7 @@ void /* PRIVATE */
png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
png_size_t text_len, int compression)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_zTXt;
#endif
png_size_t key_len;
char buf[1];
png_charp new_key;
@ -1449,9 +1439,7 @@ void /* PRIVATE */
png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
png_charp lang, png_charp lang_key, png_charp text)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_iTXt;
#endif
png_size_t lang_len, key_len, lang_key_len, text_len;
png_charp new_lang;
png_charp new_key = NULL;
@ -1538,9 +1526,7 @@ void /* PRIVATE */
png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
int unit_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_oFFs;
#endif
png_byte buf[9];
png_debug(1, "in png_write_oFFs");
@ -1561,9 +1547,7 @@ void /* PRIVATE */
png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_pCAL;
#endif
png_size_t purpose_len, units_len, total_len;
png_uint_32p params_len;
png_byte buf[10];
@ -1582,7 +1566,7 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
total_len = purpose_len + units_len + 10;
params_len = (png_uint_32p)png_malloc(png_ptr,
(png_uint_32)(nparams * png_sizeof(png_uint_32)));
(png_alloc_size_t)(nparams * png_sizeof(png_uint_32)));
/* Find the length of each parameter, making sure we don't count the
null terminator for the last parameter. */
@ -1624,36 +1608,17 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
void /* PRIVATE */
png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sCAL;
#endif
char buf[64];
png_size_t total_len;
png_debug(1, "in png_write_sCAL");
buf[0] = (char)unit;
#ifdef _WIN32_WCE
/* sprintf() function is not supported on WindowsCE */
{
wchar_t wc_buf[32];
size_t wc_len;
swprintf(wc_buf, TEXT("%12.12e"), width);
wc_len = wcslen(wc_buf);
WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + 1, wc_len, NULL, NULL);
total_len = wc_len + 2;
swprintf(wc_buf, TEXT("%12.12e"), height);
wc_len = wcslen(wc_buf);
WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + total_len, wc_len,
NULL, NULL);
total_len += wc_len;
}
#else
png_snprintf(buf + 1, 63, "%12.12e", width);
total_len = 1 + png_strlen(buf + 1) + 1;
png_snprintf(buf + total_len, 64-total_len, "%12.12e", height);
total_len += png_strlen(buf + total_len);
#endif
png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
png_write_chunk(png_ptr, (png_bytep)png_sCAL, (png_bytep)buf, total_len);
@ -1664,9 +1629,7 @@ void /* PRIVATE */
png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
png_charp height)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sCAL;
#endif
png_byte buf[64];
png_size_t wlen, hlen, total_len;
@ -1699,9 +1662,7 @@ png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
png_uint_32 y_pixels_per_unit,
int unit_type)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_pHYs;
#endif
png_byte buf[9];
png_debug(1, "in png_write_pHYs");
@ -1724,9 +1685,7 @@ png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
void /* PRIVATE */
png_write_tIME(png_structp png_ptr, png_timep mod_time)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tIME;
#endif
png_byte buf[7];
png_debug(1, "in png_write_tIME");
@ -1779,7 +1738,7 @@ png_write_start_row(png_structp png_ptr)
/* Set up row buffer */
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)buf_size);
(png_alloc_size_t)buf_size);
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
#ifdef PNG_WRITE_FILTER_SUPPORTED
@ -1787,7 +1746,7 @@ png_write_start_row(png_structp png_ptr)
if (png_ptr->do_filter & PNG_FILTER_SUB)
{
png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_alloc_size_t)(png_ptr->rowbytes + 1));
png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
}
@ -1796,26 +1755,26 @@ png_write_start_row(png_structp png_ptr)
{
/* Set up previous row buffer */
png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
(png_uint_32)buf_size);
(png_alloc_size_t)buf_size);
if (png_ptr->do_filter & PNG_FILTER_UP)
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_size_t)(png_ptr->rowbytes + 1));
png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
}
if (png_ptr->do_filter & PNG_FILTER_AVG)
{
png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_alloc_size_t)(png_ptr->rowbytes + 1));
png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
}
if (png_ptr->do_filter & PNG_FILTER_PAETH)
{
png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_size_t)(png_ptr->rowbytes + 1));
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
@ -1981,11 +1940,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
png_debug(1, "in png_do_write_interlace");
/* We don't have to do anything on the last pass (6) */
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL && pass < 6)
#else
if (pass < 6)
#endif
{
/* Each pixel depth is handled separately */
switch (row_info->pixel_depth)