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authorGlenn Randers-Pehrson <glennrp at users.sourceforge.net>2009-11-03 11:06:42 -0600
committerGlenn Randers-Pehrson <glennrp at users.sourceforge.net>2009-11-03 11:06:42 -0600
commit45efadff816cfd426bb49ab968555b0f78120ee4 (patch)
tree33b0a752cfab8b345f013f5622c3a584feba352c
parentc7903cec98aec665474ce7d85326b15770c340ee (diff)
downloadlibpng-45efadff816cfd426bb49ab968555b0f78120ee4.tar.gz
Bump version to 1.7.5; embed libpng-1.2.41beta14v1.7.5
Diffstat
-rw-r--r--png.c208
-rw-r--r--png.h1517
-rw-r--r--pngconf.h657
-rw-r--r--pngcrush.c9
-rw-r--r--pngcrush.h2
-rw-r--r--pngerror.c4
-rw-r--r--pngget.c77
-rw-r--r--pngmem.c76
-rw-r--r--pngpread.c115
-rw-r--r--pngpriv.h835
-rw-r--r--pngread.c419
-rw-r--r--pngrio.c28
-rw-r--r--pngrtran.c360
-rw-r--r--pngrutil.c157
-rw-r--r--pngset.c241
-rw-r--r--pngtest.c156
-rw-r--r--pngtrans.c27
-rw-r--r--pngwio.c25
-rw-r--r--pngwrite.c266
-rw-r--r--pngwtran.c20
-rw-r--r--pngwutil.c124
21 files changed, 3551 insertions, 1772 deletions
diff --git a/png.c b/png.c
index 86118ad94..ad3b69edc 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -11,17 +11,81 @@
* and license in png.h
*/
+#define PNG_INTERNAL
#define PNG_NO_EXTERN
#include "png.h"
-#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0rc01 Your_png_h_is_not_version_1_4_0rc01;
+typedef version_1_2_41beta14 Your_png_h_is_not_version_1_2_41beta14;
/* 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
@@ -38,7 +102,7 @@ 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);
}
@@ -69,17 +133,32 @@ 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_alloc_size_t num_bytes;
+ png_uint_32 num_bytes;
if (png_ptr == NULL)
return (NULL);
@@ -88,17 +167,36 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
png_warning (p, "Potential overflow in png_zalloc()");
return (NULL);
}
- num_bytes = (png_alloc_size_t)items * size;
+ num_bytes = (png_uint_32)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);
@@ -203,6 +301,15 @@ 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)
@@ -225,6 +332,7 @@ 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)
@@ -240,8 +348,9 @@ 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,
@@ -254,7 +363,11 @@ 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)
{
@@ -278,17 +391,28 @@ 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_alpha);
- info_ptr->trans_alpha = NULL;
+ png_free(png_ptr, info_ptr->trans);
+ info_ptr->trans = 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);
@@ -302,7 +426,11 @@ 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);
@@ -325,7 +453,11 @@ 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);
@@ -337,7 +469,11 @@ 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)
{
@@ -373,7 +509,11 @@ 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)
{
@@ -402,26 +542,44 @@ 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)
{
@@ -429,17 +587,21 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
for (row = 0; row < (int)info_ptr->height; row++)
{
png_free(png_ptr, info_ptr->row_pointers[row]);
+ info_ptr->row_pointers[row]=NULL;
}
png_free(png_ptr, info_ptr->row_pointers);
+ info_ptr->row_pointers=NULL;
}
info_ptr->valid &= ~PNG_INFO_IDAT;
}
#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
@@ -457,6 +619,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_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
@@ -516,6 +679,17 @@ 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];
@@ -532,6 +706,7 @@ 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 */
@@ -547,13 +722,13 @@ png_get_copyright(png_structp png_ptr)
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
- "libpng version x 1.4.0rc01 - October 21, 2009" PNG_STRING_NEWLINE \
+ "libpng version 1.2.41beta14 - November 3, 2009" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2009 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 1.4.0rc01 - October 21, 2009\
+ return ((png_charp) "libpng version 1.2.41beta14 - November 3, 2009\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@@ -638,6 +813,17 @@ 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
diff --git a/png.h b/png.h
index 8d6768031..9871a325e 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,6 @@
-
/* png.h - header file for PNG reference library
*
- * libpng version 1.4.0rc01 - October 21, 2009
+ * libpng version 1.2.41beta14 - November 3, 2009
* Copyright (c) 1998-2009 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.)
@@ -11,7 +10,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- * libpng versions 0.97, January 1998, through 1.4.0rc01 - October 21, 2009: Glenn
+ * libpng versions 0.97, January 1998, through 1.2.41beta14 - November 3, 2009: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@@ -105,31 +104,148 @@
* 1.0.16 10 10016 10.so.0.1.0.16
* 1.2.6 13 10206 12.so.0.1.2.6
* 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
- * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
+ * 1.0.17rc1 10 10017 10.so.0.1.0.17rc1
* 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
- * 1.0.17 10 10017 12.so.0.1.0.17
+ * 1.0.17 10 10017 10.so.0.1.0.17
* 1.2.7 13 10207 12.so.0.1.2.7
* 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
- * 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
+ * 1.0.18rc1-5 10 10018 10.so.0.1.0.18rc1-5
* 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
- * 1.0.18 10 10018 12.so.0.1.0.18
+ * 1.0.18 10 10018 10.so.0.1.0.18
* 1.2.8 13 10208 12.so.0.1.2.8
* 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
* 1.2.9beta4-11 13 10209 12.so.0.9[.0]
* 1.2.9rc1 13 10209 12.so.0.9[.0]
* 1.2.9 13 10209 12.so.0.9[.0]
- * 1.2.10beta1-7 13 10210 12.so.0.10[.0]
- * 1.2.10rc1-2 13 10210 12.so.0.10[.0]
+ * 1.2.10beta1-8 13 10210 12.so.0.10[.0]
+ * 1.2.10rc1-3 13 10210 12.so.0.10[.0]
* 1.2.10 13 10210 12.so.0.10[.0]
- * 1.4.0beta1-5 14 10400 14.so.0.0[.0]
* 1.2.11beta1-4 13 10211 12.so.0.11[.0]
- * 1.4.0beta7-8 14 10400 14.so.0.0[.0]
+ * 1.0.19rc1-5 10 10019 10.so.0.19[.0]
+ * 1.2.11rc1-5 13 10211 12.so.0.11[.0]
+ * 1.0.19 10 10019 10.so.0.19[.0]
* 1.2.11 13 10211 12.so.0.11[.0]
+ * 1.0.20 10 10020 10.so.0.20[.0]
* 1.2.12 13 10212 12.so.0.12[.0]
- * 1.4.0beta9-14 14 10400 14.so.0.0[.0]
+ * 1.2.13beta1 13 10213 12.so.0.13[.0]
+ * 1.0.21 10 10021 10.so.0.21[.0]
* 1.2.13 13 10213 12.so.0.13[.0]
- * 1.4.0beta15-36 14 10400 14.so.0.0[.0]
- * 1.4.0beta37-87 14 10400 14.so.14.0[.0]
+ * 1.2.14beta1-2 13 10214 12.so.0.14[.0]
+ * 1.0.22rc1 10 10022 10.so.0.22[.0]
+ * 1.2.14rc1 13 10214 12.so.0.14[.0]
+ * 1.0.22 10 10022 10.so.0.22[.0]
+ * 1.2.14 13 10214 12.so.0.14[.0]
+ * 1.2.15beta1-6 13 10215 12.so.0.15[.0]
+ * 1.0.23rc1-5 10 10023 10.so.0.23[.0]
+ * 1.2.15rc1-5 13 10215 12.so.0.15[.0]
+ * 1.0.23 10 10023 10.so.0.23[.0]
+ * 1.2.15 13 10215 12.so.0.15[.0]
+ * 1.2.16beta1-2 13 10216 12.so.0.16[.0]
+ * 1.2.16rc1 13 10216 12.so.0.16[.0]
+ * 1.0.24 10 10024 10.so.0.24[.0]
+ * 1.2.16 13 10216 12.so.0.16[.0]
+ * 1.2.17beta1-2 13 10217 12.so.0.17[.0]
+ * 1.0.25rc1 10 10025 10.so.0.25[.0]
+ * 1.2.17rc1-3 13 10217 12.so.0.17[.0]
+ * 1.0.25 10 10025 10.so.0.25[.0]
+ * 1.2.17 13 10217 12.so.0.17[.0]
+ * 1.0.26 10 10026 10.so.0.26[.0]
+ * 1.2.18 13 10218 12.so.0.18[.0]
+ * 1.2.19beta1-31 13 10219 12.so.0.19[.0]
+ * 1.0.27rc1-6 10 10027 10.so.0.27[.0]
+ * 1.2.19rc1-6 13 10219 12.so.0.19[.0]
+ * 1.0.27 10 10027 10.so.0.27[.0]
+ * 1.2.19 13 10219 12.so.0.19[.0]
+ * 1.2.20beta01-04 13 10220 12.so.0.20[.0]
+ * 1.0.28rc1-6 10 10028 10.so.0.28[.0]
+ * 1.2.20rc1-6 13 10220 12.so.0.20[.0]
+ * 1.0.28 10 10028 10.so.0.28[.0]
+ * 1.2.20 13 10220 12.so.0.20[.0]
+ * 1.2.21beta1-2 13 10221 12.so.0.21[.0]
+ * 1.2.21rc1-3 13 10221 12.so.0.21[.0]
+ * 1.0.29 10 10029 10.so.0.29[.0]
+ * 1.2.21 13 10221 12.so.0.21[.0]
+ * 1.2.22beta1-4 13 10222 12.so.0.22[.0]
+ * 1.0.30rc1 10 10030 10.so.0.30[.0]
+ * 1.2.22rc1 13 10222 12.so.0.22[.0]
+ * 1.0.30 10 10030 10.so.0.30[.0]
+ * 1.2.22 13 10222 12.so.0.22[.0]
+ * 1.2.23beta01-05 13 10223 12.so.0.23[.0]
+ * 1.2.23rc01 13 10223 12.so.0.23[.0]
+ * 1.2.23 13 10223 12.so.0.23[.0]
+ * 1.2.24beta01-02 13 10224 12.so.0.24[.0]
+ * 1.2.24rc01 13 10224 12.so.0.24[.0]
+ * 1.2.24 13 10224 12.so.0.24[.0]
+ * 1.2.25beta01-06 13 10225 12.so.0.25[.0]
+ * 1.2.25rc01-02 13 10225 12.so.0.25[.0]
+ * 1.0.31 10 10031 10.so.0.31[.0]
+ * 1.2.25 13 10225 12.so.0.25[.0]
+ * 1.2.26beta01-06 13 10226 12.so.0.26[.0]
+ * 1.2.26rc01 13 10226 12.so.0.26[.0]
+ * 1.2.26 13 10226 12.so.0.26[.0]
+ * 1.0.32 10 10032 10.so.0.32[.0]
+ * 1.2.27beta01-06 13 10227 12.so.0.27[.0]
+ * 1.2.27rc01 13 10227 12.so.0.27[.0]
+ * 1.0.33 10 10033 10.so.0.33[.0]
+ * 1.2.27 13 10227 12.so.0.27[.0]
+ * 1.0.34 10 10034 10.so.0.34[.0]
+ * 1.2.28 13 10228 12.so.0.28[.0]
+ * 1.2.29beta01-03 13 10229 12.so.0.29[.0]
+ * 1.2.29rc01 13 10229 12.so.0.29[.0]
+ * 1.0.35 10 10035 10.so.0.35[.0]
+ * 1.2.29 13 10229 12.so.0.29[.0]
+ * 1.0.37 10 10037 10.so.0.37[.0]
+ * 1.2.30beta01-04 13 10230 12.so.0.30[.0]
+ * 1.0.38rc01-08 10 10038 10.so.0.38[.0]
+ * 1.2.30rc01-08 13 10230 12.so.0.30[.0]
+ * 1.0.38 10 10038 10.so.0.38[.0]
+ * 1.2.30 13 10230 12.so.0.30[.0]
+ * 1.0.39rc01-03 10 10039 10.so.0.39[.0]
+ * 1.2.31rc01-03 13 10231 12.so.0.31[.0]
+ * 1.0.39 10 10039 10.so.0.39[.0]
+ * 1.2.31 13 10231 12.so.0.31[.0]
+ * 1.2.32beta01-02 13 10232 12.so.0.32[.0]
+ * 1.0.40rc01 10 10040 10.so.0.40[.0]
+ * 1.2.32rc01 13 10232 12.so.0.32[.0]
+ * 1.0.40 10 10040 10.so.0.40[.0]
+ * 1.2.32 13 10232 12.so.0.32[.0]
+ * 1.2.33beta01-02 13 10233 12.so.0.33[.0]
+ * 1.2.33rc01-02 13 10233 12.so.0.33[.0]
+ * 1.0.41rc01 10 10041 10.so.0.41[.0]
+ * 1.2.33 13 10233 12.so.0.33[.0]
+ * 1.0.41 10 10041 10.so.0.41[.0]
+ * 1.2.34beta01-07 13 10234 12.so.0.34[.0]
+ * 1.0.42rc01 10 10042 10.so.0.42[.0]
+ * 1.2.34rc01 13 10234 12.so.0.34[.0]
+ * 1.0.42 10 10042 10.so.0.42[.0]
+ * 1.2.34 13 10234 12.so.0.34[.0]
+ * 1.2.35beta01-03 13 10235 12.so.0.35[.0]
+ * 1.0.43rc01-02 10 10043 10.so.0.43[.0]
+ * 1.2.35rc01-02 13 10235 12.so.0.35[.0]
+ * 1.0.43 10 10043 10.so.0.43[.0]
+ * 1.2.35 13 10235 12.so.0.35[.0]
+ * 1.2.36beta01-05 13 10236 12.so.0.36[.0]
+ * 1.2.36rc01 13 10236 12.so.0.36[.0]
+ * 1.0.44 10 10044 10.so.0.44[.0]
+ * 1.2.36 13 10236 12.so.0.36[.0]
+ * 1.2.37beta01-03 13 10237 12.so.0.37[.0]
+ * 1.2.37rc01 13 10237 12.so.0.37[.0]
+ * 1.2.37 13 10237 12.so.0.37[.0]
+ * 1.2.45 10 10045 12.so.0.45[.0]
+ * 1.0.46 10 10046 10.so.0.46[.0]
+ * 1.2.38beta01 13 10238 12.so.0.38[.0]
+ * 1.2.38rc01-03 13 10238 12.so.0.38[.0]
+ * 1.0.47 10 10047 10.so.0.47[.0]
+ * 1.2.38 13 10238 12.so.0.38[.0]
+ * 1.2.39beta01-05 13 10239 12.so.0.39[.0]
+ * 1.2.39rc01 13 10239 12.so.0.39[.0]
+ * 1.0.48 10 10048 10.so.0.48[.0]
+ * 1.2.39 13 10239 12.so.0.39[.0]
+ * 1.2.40beta01 13 10240 12.so.0.40[.0]
+ * 1.2.40rc01 13 10240 12.so.0.40[.0]
+ * 1.0.49 10 10049 10.so.0.49[.0]
+ * 1.2.40 13 10240 12.so.0.40[.0]
+ * 1.2.41beta01-14 13 10241 12.so.0.41[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@@ -139,7 +255,7 @@
* to the source version x.y.z (leading zeros in y and z). Beta versions
* were given the previous public release number plus a letter, until
* version 1.0.6j; from then on they were given the upcoming public
- * release number plus "betaNN" or "rcN".
+ * release number plus "betaNN" or "rcNN".
*
* Binary incompatibility exists only when applications make direct access
* to the info_ptr or png_ptr members through png.h, and the compiled
@@ -161,8 +277,8 @@
*
* This code is released under the libpng license.
*
- * libpng versions 1.2.6, August 15, 2004, through 1.4.0rc01, October 21, 2009, are
- * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.41beta14, November 3, 2009, are
+ * Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
*
@@ -250,7 +366,7 @@
* A "png_get_copyright" function is available, for convenient use in "about"
* boxes and the like:
*
- * printf("%s",png_get_copyright(NULL));
+ * printf("%s",png_get_copyright(NULL));
*
* Also, the PNG logo (in PNG format, of course) is supplied in the
* files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
@@ -273,13 +389,13 @@
* Y2K compliance in libpng:
* =========================
*
- * July 1, 2008
+ * November 3, 2009
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
- * upward through 1.4.0rc01 are Y2K compliant. It is my belief that earlier
+ * upward through 1.2.41beta14 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant.
*
* Libpng only has three year fields. One is a 2-byte unsigned integer
@@ -335,22 +451,22 @@
*/
/* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.4.0rc01"
+#define PNG_LIBPNG_VER_STRING "1.2.41beta14"
#define PNG_HEADER_VERSION_STRING \
- " libpng version 1.4.0rc01 - October 21, 2009\n"
+ " libpng version 1.2.41beta14 - November 3, 2009\n"
-#define PNG_LIBPNG_VER_SONUM 14
-#define PNG_LIBPNG_VER_DLLNUM 14
+#define PNG_LIBPNG_VER_SONUM 0
+#define PNG_LIBPNG_VER_DLLNUM 13
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
-#define PNG_LIBPNG_VER_MINOR 4
-#define PNG_LIBPNG_VER_RELEASE 0
+#define PNG_LIBPNG_VER_MINOR 2
+#define PNG_LIBPNG_VER_RELEASE 41
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
*/
-#define PNG_LIBPNG_VER_BUILD 01
+#define PNG_LIBPNG_VER_BUILD 14
/* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1
@@ -375,24 +491,19 @@
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/
-#define PNG_LIBPNG_VER 10400 /* 1.4.0 */
+#define PNG_LIBPNG_VER 10241 /* 1.2.41 */
#ifndef PNG_VERSION_INFO_ONLY
/* Include the compression library's header */
#include "zlib.h"
#endif
-#ifdef AIX
-#define jmpbuf __jmpbuf
-#endif
-
/* Include all user configurable info, including optional assembler routines */
#include "pngconf.h"
/*
- * Added at libpng-1.2.8
- *
- * Ref MSDN: Private as priority over Special
+ * Added at libpng-1.2.8 */
+/* Ref MSDN: Private as priority over Special
* VS_FF_PRIVATEBUILD File *was not* built using standard release
* procedures. If this value is given, the StringFileInfo block must
* contain a PrivateBuild string.
@@ -428,12 +539,65 @@ extern "C" {
* which applications aren't expected to use directly.
*/
+#ifndef PNG_NO_TYPECAST_NULL
+#define int_p_NULL (int *)NULL
+#define png_bytep_NULL (png_bytep)NULL
+#define png_bytepp_NULL (png_bytepp)NULL
+#define png_doublep_NULL (png_doublep)NULL
+#define png_error_ptr_NULL (png_error_ptr)NULL
+#define png_flush_ptr_NULL (png_flush_ptr)NULL
+#define png_free_ptr_NULL (png_free_ptr)NULL
+#define png_infopp_NULL (png_infopp)NULL
+#define png_malloc_ptr_NULL (png_malloc_ptr)NULL
+#define png_read_status_ptr_NULL (png_read_status_ptr)NULL
+#define png_rw_ptr_NULL (png_rw_ptr)NULL
+#define png_structp_NULL (png_structp)NULL
+#define png_uint_16p_NULL (png_uint_16p)NULL
+#define png_voidp_NULL (png_voidp)NULL
+#define png_write_status_ptr_NULL (png_write_status_ptr)NULL
+#else
+#define int_p_NULL NULL
+#define png_bytep_NULL NULL
+#define png_bytepp_NULL NULL
+#define png_doublep_NULL NULL
+#define png_error_ptr_NULL NULL
+#define png_flush_ptr_NULL NULL
+#define png_free_ptr_NULL NULL
+#define png_infopp_NULL NULL
+#define png_malloc_ptr_NULL NULL
+#define png_read_status_ptr_NULL NULL
+#define png_rw_ptr_NULL NULL
+#define png_structp_NULL NULL
+#define png_uint_16p_NULL NULL
+#define png_voidp_NULL NULL
+#define png_write_status_ptr_NULL NULL
+#endif
+
/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
/* Version information for C files, stored in png.c. This had better match
* the version above.
*/
+#ifdef PNG_USE_GLOBAL_ARRAYS
+PNG_EXPORT_VAR (PNG_CONST char) png_libpng_ver[18];
+ /* Need room for 99.99.99beta99z */
+#else
#define png_libpng_ver png_get_header_ver(NULL)
+#endif
+
+#ifdef PNG_USE_GLOBAL_ARRAYS
+/* This was removed in version 1.0.5c */
+/* Structures to facilitate easy interlacing. See png.c for more details */
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_start[7];
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_inc[7];
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_ystart[7];
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_yinc[7];
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_mask[7];
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_dsp_mask[7];
+/* This isn't currently used. If you need it, see png.c for more details.
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_height[7];
+*/
+#endif
#endif /* PNG_NO_EXTERN */
@@ -535,7 +699,8 @@ typedef png_text FAR * FAR * png_textpp;
#endif
/* Supported compression types for text in PNG files (tEXt, and zTXt).
- * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */
+ * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed.
+ */
#define PNG_TEXT_COMPRESSION_NONE_WR -3
#define PNG_TEXT_COMPRESSION_zTXt_WR -2
#define PNG_TEXT_COMPRESSION_NONE -1
@@ -569,9 +734,10 @@ typedef png_time FAR * FAR * png_timepp;
* up private chunks for output even though the library doesn't actually
* know about their semantics.
*/
+#define PNG_CHUNK_NAME_LENGTH 5
typedef struct png_unknown_chunk_t
{
- png_byte name[5];
+ png_byte name[PNG_CHUNK_NAME_LENGTH];
png_byte *data;
png_size_t size;
@@ -624,11 +790,11 @@ typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
*/
typedef struct png_info_struct
{
- /* the following are necessary for every PNG file */
+ /* The following are necessary for every PNG file */
png_uint_32 width; /* width of image in pixels (from IHDR) */
png_uint_32 height; /* height of image in pixels (from IHDR) */
png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
- png_size_t rowbytes; /* bytes needed to hold an untransformed row */
+ png_uint_32 rowbytes; /* bytes needed to hold an untransformed row */
png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
@@ -707,8 +873,8 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
* single color specified that should be treated as fully transparent.
* Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
*/
- png_bytep trans_alpha; /* alpha values for paletted image */
- png_color_16 trans_color; /* transparent color for non-palette image */
+ png_bytep trans; /* transparent values for paletted image */
+ png_color_16 trans_values; /* transparent color for non-palette image */
#endif
#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
@@ -793,7 +959,9 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#endif
/* New members added in libpng-1.0.6 */
+#ifdef PNG_FREE_ME_SUPPORTED
png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
@@ -866,6 +1034,10 @@ typedef png_info FAR * FAR * png_infopp;
#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
#define PNG_UINT_32_MAX ((png_uint_32)(-1))
#define PNG_SIZE_MAX ((png_size_t)(-1))
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* PNG_MAX_UINT is deprecated; use PNG_UINT_31_MAX instead. */
+#define PNG_MAX_UINT PNG_UINT_31_MAX
+#endif
/* These describe the color_type field in png_info. */
/* color type masks */
@@ -962,7 +1134,7 @@ typedef png_info FAR * FAR * png_infopp;
typedef struct png_row_info_struct
{
png_uint_32 width; /* width of row */
- png_size_t rowbytes; /* number of bytes in row */
+ png_uint_32 rowbytes; /* number of bytes in row */
png_byte color_type; /* color type of row */
png_byte bit_depth; /* bit depth of row */
png_byte channels; /* number of channels (1, 2, 3, or 4) */
@@ -997,7 +1169,8 @@ typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_LEGACY_SUPPORTED)
typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
png_row_infop, png_bytep));
#endif
@@ -1022,11 +1195,11 @@ typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
-#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only */
+#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only, deprecated */
/* Added to libpng-1.2.34 */
-#define PNG_TRANSFORM_STRIP_FILLER_BEFORE PNG_TRANSFORM_STRIP_FILLER
-#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
-/* Added to libpng-1.4.0 */
+#define PNG_TRANSFORM_STRIP_FILLER_BEFORE 0x0800 /* write only */
+#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
+/* Added to libpng-1.2.41 */
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
/* Flags for MNG supported features */
@@ -1034,7 +1207,7 @@ typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
#define PNG_FLAG_MNG_FILTER_64 0x04
#define PNG_ALL_MNG_FEATURES 0x05
-typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_alloc_size_t));
+typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_size_t));
typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
/* The structure that holds the information to read and write PNG files.
@@ -1091,16 +1264,18 @@ struct png_struct_def
png_uint_32 height; /* height of image in pixels */
png_uint_32 num_rows; /* number of rows in current pass */
png_uint_32 usr_width; /* width of row at start of write */
- png_size_t rowbytes; /* size of row in bytes */
- png_size_t irowbytes; /* size of current interlaced row in bytes */
+ png_uint_32 rowbytes; /* size of row in bytes */
+ png_uint_32 irowbytes; /* size of current interlaced row in bytes */
png_uint_32 iwidth; /* width of current interlaced row in pixels */
png_uint_32 row_number; /* current row in interlace pass */
png_bytep prev_row; /* buffer to save previous (unfiltered) row */
png_bytep row_buf; /* buffer to save current (unfiltered) row */
+#ifndef PNG_NO_WRITE_FILTER
png_bytep sub_row; /* buffer to save "sub" row when filtering */
png_bytep up_row; /* buffer to save "up" row when filtering */
png_bytep avg_row; /* buffer to save "avg" row when filtering */
png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
+#endif
png_row_info row_info; /* used for transformation routines */
png_uint_32 idat_size; /* current IDAT size for read */
@@ -1123,8 +1298,12 @@ struct png_struct_def
png_byte sig_bytes; /* magic bytes read/written from start of file */
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+#ifdef PNG_LEGACY_SUPPORTED
+ png_byte filler; /* filler byte for pixel expansion */
+#else
png_uint_16 filler; /* filler bytes for pixel expansion */
#endif
+#endif
#ifdef PNG_bKGD_SUPPORTED
png_byte background_gamma_type;
@@ -1170,8 +1349,8 @@ struct png_struct_def
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
|| defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep trans_alpha; /* alpha values for paletted files */
- png_color_16 trans_color; /* transparent color for non-paletted files */
+ png_bytep trans; /* transparency values for paletted files */
+ png_color_16 trans_values; /* transparency values for non-paletted files */
#endif
png_read_status_ptr read_row_fn; /* called after each row is decoded */
@@ -1198,12 +1377,11 @@ struct png_struct_def
png_size_t current_text_left; /* how much text left to read in input */
png_charp current_text; /* current text chunk buffer */
png_charp current_text_ptr; /* current location in current_text */
-# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
+# endif /* PNG_TEXT_SUPPORTED */
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
+/* for the Borland special 64K segment handler */
png_bytepp offset_table_ptr;
png_bytep offset_table;
png_uint_16 offset_table_number;
@@ -1236,7 +1414,9 @@ struct png_struct_def
/* New members added in libpng-1.0.6 */
- png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+#ifdef PNG_FREE_ME_SUPPORTED
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+#endif
#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp user_chunk_ptr;
@@ -1262,7 +1442,11 @@ struct png_struct_def
defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+#ifdef PNG_1_0_X
+ png_byte mng_features_permitted;
+#else
png_uint_32 mng_features_permitted;
+#endif /* PNG_1_0_X */
#endif
/* New member added in libpng-1.0.7 */
@@ -1275,25 +1459,39 @@ struct png_struct_def
png_byte filter_type;
#endif
+#ifdef PNG_1_0_X
+/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */
+ png_uint_32 row_buf_size;
+#endif
+
/* New members added in libpng-1.2.0 */
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+# ifndef PNG_1_0_X
+# ifdef PNG_MMX_CODE_SUPPORTED
+ png_byte mmx_bitdepth_threshold;
+ png_uint_32 mmx_rowbytes_threshold;
+# endif
+ png_uint_32 asm_flags;
+# endif
+#endif
/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
#ifdef PNG_USER_MEM_SUPPORTED
- png_voidp mem_ptr; /* user supplied struct for mem functions */
- png_malloc_ptr malloc_fn; /* function for allocating memory */
- png_free_ptr free_fn; /* function for freeing memory */
+ png_voidp mem_ptr; /* user supplied struct for mem functions */
+ png_malloc_ptr malloc_fn; /* function for allocating memory */
+ png_free_ptr free_fn; /* function for freeing memory */
#endif
/* New member added in libpng-1.0.13 and 1.2.0 */
- png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
+ png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
#ifdef PNG_READ_DITHER_SUPPORTED
/* The following three members were added at version 1.0.14 and 1.2.4 */
- png_bytep dither_sort; /* working sort array */
- png_bytep index_to_palette; /* where the original index currently is */
- /* in the palette */
- png_bytep palette_to_index; /* which original index points to this */
- /* palette color */
+ png_bytep dither_sort; /* working sort array */
+ png_bytep index_to_palette; /* where the original index currently is */
+ /* in the palette */
+ png_bytep palette_to_index; /* which original index points to this */
+ /* palette color */
#endif
/* New members added in libpng-1.0.16 and 1.2.6 */
@@ -1302,10 +1500,6 @@ struct png_struct_def
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_uint_32 user_width_max;
png_uint_32 user_height_max;
- /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
- * chunks that can be stored (0x7fffffff means unlimited).
- */
- png_uint_32 user_chunk_cache_max;
#endif
/* New member added in libpng-1.0.25 and 1.2.17 */
@@ -1320,9 +1514,22 @@ struct png_struct_def
/* New member added in libpng-1.2.30 */
png_charp chunkdata; /* buffer for reading chunk data */
-/* New member added in libpng-1.4.0 */
+/* New member added in libpng-1.2.41 */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ /* Total number of sPLT, text, and unknown
+ * chunks that can be stored (0x7fffffff means unlimited).
+ */
+ png_uint_32 user_chunk_cache_max;
+#endif
+
+/* New member added in libpng-1.2.41 */
#ifdef PNG_IO_STATE_SUPPORTED
- png_uint_32 io_state;
+ png_uint_32 io_state;
+#endif
+
+/* New member added in libpng-1.2.41, will be removed from 1.4.0 */
+#ifdef PNG_iTXt_SUPPORTED
+ png_charp user_png_ver; /* libpng version used to build calling app */
#endif
};
@@ -1330,7 +1537,7 @@ struct png_struct_def
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
-typedef png_structp version_1_4_0rc01;
+typedef png_structp version_1_2_41beta14;
typedef png_struct FAR * FAR * png_structpp;
@@ -1360,7 +1567,7 @@ extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
/* Simple signature checking function. This is the same as calling
* png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
*/
-#define png_check_sig(sig,n) !png_sig_cmp((sig), 0, (n))
+extern PNG_EXPORT(int,png_check_sig) PNGARG((png_bytep sig, int num));
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
extern PNG_EXPORT(png_structp,png_create_read_struct)
@@ -1373,13 +1580,13 @@ extern PNG_EXPORT(png_structp,png_create_write_struct)
png_error_ptr error_fn, png_error_ptr warn_fn));
#ifdef PNG_WRITE_SUPPORTED
-extern PNG_EXPORT(png_size_t,png_get_compression_buffer_size)
+extern PNG_EXPORT(png_uint_32,png_get_compression_buffer_size)
PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_WRITE_SUPPORTED
extern PNG_EXPORT(void,png_set_compression_buffer_size)
- PNGARG((png_structp png_ptr, png_size_t size));
+ PNGARG((png_structp png_ptr, png_uint_32 size));
#endif
/* Reset the compression stream */
@@ -1397,9 +1604,6 @@ extern PNG_EXPORT(png_structp,png_create_write_struct_2)
png_malloc_ptr malloc_fn, png_free_ptr free_fn));
#endif
-/* Write the PNG file signature. */
-extern PNG_EXPORT(void,png_write_sig) PNGARG((png_structp png_ptr));
-
/* Write a PNG chunk - size, type, (optional) data, CRC. */
extern PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr,
png_bytep chunk_name, png_bytep data, png_size_t length));
@@ -1419,6 +1623,14 @@ extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_infop,png_create_info_struct)
PNGARG((png_structp png_ptr));
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* Initialize the info structure (old interface - DEPRECATED) */
+extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr));
+#undef png_info_init
+#define png_info_init(info_ptr) png_info_init_3(&info_ptr,\
+ png_sizeof(png_info));
+#endif
+
extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
png_size_t png_info_struct_size));
@@ -1439,7 +1651,7 @@ extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
PNGARG((png_structp png_ptr, png_timep ptime));
#endif
-#ifdef PNG_WRITE_tIME_SUPPORTED
+#ifdef PNG_CONVERT_tIME_SUPPORTED
/* Convert from a struct tm to png_time */
extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
struct tm FAR * ttime));
@@ -1447,15 +1659,21 @@ extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
/* Convert from time_t to png_time. Uses gmtime() */
extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
time_t ttime));
-#endif /* PNG_WRITE_tIME_SUPPORTED */
+#endif /* PNG_CONVERT_tIME_SUPPORTED */
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr));
+#ifndef PNG_1_0_X
extern PNG_EXPORT(void,png_set_expand_gray_1_2_4_to_8) PNGARG((png_structp
png_ptr));
+#endif
extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* Deprecated */
+extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr));
+#endif
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
@@ -1510,8 +1728,10 @@ extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr,
#define PNG_FILLER_BEFORE 0
#define PNG_FILLER_AFTER 1
/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
+#ifndef PNG_1_0_X
extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr,
png_uint_32 filler, int flags));
+#endif
#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
@@ -1579,6 +1799,15 @@ extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr,
#endif
#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)
+/* Permit or disallow empty PLTE (0: not permitted, 1: permitted) */
+/* Deprecated and will be removed. Use png_permit_mng_features() instead. */
+extern PNG_EXPORT(void,png_permit_empty_plte) PNGARG((png_structp png_ptr,
+ int empty_plte_permitted));
+#endif
+#endif
#ifdef PNG_WRITE_FLUSH_SUPPORTED
/* Set how many lines between output flushes - 0 for no flushing */
@@ -1594,20 +1823,20 @@ extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
png_infop info_ptr));
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* Read one or more rows of image data. */
extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr,
png_bytepp row, png_bytepp display_row, png_uint_32 num_rows));
#endif
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* Read a row of data. */
extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr,
png_bytep row,
png_bytep display_row));
#endif
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* Read the whole image into memory at once. */
extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr,
png_bytepp image));
@@ -1625,11 +1854,11 @@ extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
png_bytepp image));
-/* Write the end of the PNG file. */
+/* Writes the end of the PNG file. */
extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
png_infop info_ptr));
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* Read the end of the PNG file. */
extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr,
png_infop info_ptr));
@@ -1712,7 +1941,7 @@ extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
#define PNG_FILTER_VALUE_PAETH 4
#define PNG_FILTER_VALUE_LAST 5
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* EXPERIMENTAL */
+#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* EXPERIMENTAL */
/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_
* defines, either the default (minimum-sum-of-absolute-differences), or
* the experimental method (weighted-minimum-sum-of-absolute-differences).
@@ -1840,18 +2069,21 @@ extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr,
extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr));
#endif
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_LEGACY_SUPPORTED)
extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp
png_ptr, png_user_transform_ptr read_user_transform_fn));
#endif
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_LEGACY_SUPPORTED)
extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp
png_ptr, png_user_transform_ptr write_user_transform_fn));
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
+ defined(PNG_LEGACY_SUPPORTED)
extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp
png_ptr, png_voidp user_transform_ptr, int user_transform_depth,
int user_transform_channels));
@@ -1892,25 +2124,41 @@ extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr,
- png_alloc_size_t size));
-/* Added at libpng version 1.4.0 */
+ png_uint_32 size));
+/* Added at libpng version 1.2.41 */
extern PNG_EXPORT(png_voidp,png_calloc) PNGARG((png_structp png_ptr,
- png_alloc_size_t size));
+ png_uint_32 size));
+#ifdef PNG_1_0_X
+# define png_malloc_warn png_malloc
+#else
/* Added at libpng version 1.2.4 */
extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr,
- png_alloc_size_t size));
+ png_uint_32 size));
+#endif
/* Frees a pointer allocated by png_malloc() */
extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
+#ifdef PNG_1_0_X
+/* Function to allocate memory for zlib. */
+extern PNG_EXPORT(voidpf,png_zalloc) PNGARG((voidpf png_ptr, uInt items,
+ uInt size));
+
+/* Function to free memory for zlib */
+extern PNG_EXPORT(void,png_zfree) PNGARG((voidpf png_ptr, voidpf ptr));
+#endif
+
/* Free data that was allocated internally */
extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 free_me, int num));
+#ifdef PNG_FREE_ME_SUPPORTED
/* Reassign responsibility for freeing existing data, whether allocated
- * by libpng or by the application */
+ * by libpng or by the application
+ */
extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
png_infop info_ptr, int freer, png_uint_32 mask));
+#endif
/* Assignments for png_data_freer */
#define PNG_DESTROY_WILL_FREE_DATA 1
#define PNG_SET_WILL_FREE_DATA 1
@@ -1932,16 +2180,23 @@ extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
#ifdef PNG_USER_MEM_SUPPORTED
extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr,
- png_alloc_size_t size));
+ png_uint_32 size));
extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr,
png_voidp ptr));
#endif
-#ifdef USE_FAR_KEYWORD /* memory model conversion function */
+extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr,
+ png_voidp s1, png_voidp s2, png_uint_32 size));
+
+extern PNG_EXPORT(png_voidp,png_memset_check) PNGARG((png_structp png_ptr,
+ png_voidp s1, int value, png_uint_32 size));
+
+#if defined(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 */
+#ifndef PNG_NO_ERROR_TEXT
/* Fatal error in PNG image of libpng - can't continue */
extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr,
png_const_charp error_message));
@@ -1949,28 +2204,22 @@ extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr,
/* The same, but the chunk name is prepended to the error string. */
extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr,
png_const_charp error_message));
+#else
+/* Fatal error in PNG image of libpng - can't continue */
+extern PNG_EXPORT(void,png_err) PNGARG((png_structp png_ptr));
+#endif
+#ifndef PNG_NO_WARNINGS
/* Non-fatal error in libpng. Can continue, but may have a problem. */
extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr,
png_const_charp warning_message));
+#ifdef PNG_READ_SUPPORTED
/* Non-fatal error in libpng, chunk name is prepended to message. */
extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr,
png_const_charp warning_message));
-
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-/* Benign error in libpng. Can continue, but may have a problem.
- * User can choose whether to handle as a fatal error or as a warning. */
-extern PNG_EXPORT(void,png_benign_error) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
-
-/* Same, chunk name is prepended to message. */
-extern PNG_EXPORT(void,png_chunk_benign_error) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
-
-extern PNG_EXPORT(void,png_set_benign_errors) PNGARG((png_structp
- png_ptr, int allowed));
-#endif
+#endif /* PNG_READ_SUPPORTED */
+#endif /* PNG_NO_WARNINGS */
/* The png_set_<chunk> functions are for storing values in the png_info_struct.
* Similarly, the png_get_<chunk> calls are used to read values from the
@@ -1989,7 +2238,7 @@ extern PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_uint_32 flag));
/* Returns number of bytes needed to hold a transformed row. */
-extern PNG_EXPORT(png_size_t,png_get_rowbytes) PNGARG((png_structp png_ptr,
+extern PNG_EXPORT(png_uint_32,png_get_rowbytes) PNGARG((png_structp png_ptr,
png_infop info_ptr));
#ifdef PNG_INFO_IMAGE_SUPPORTED
@@ -2239,11 +2488,12 @@ extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_textp *text_ptr, int *num_text));
#endif
-/* Note while png_set_text() will accept a structure whose text,
- * language, and translated keywords are NULL pointers, the structure
- * returned by png_get_text will always contain regular
- * zero-terminated C strings. They might be empty strings but
- * they will never be NULL pointers.
+/*
+ * Note while png_set_text() will accept a structure whose text,
+ * language, and translated keywords are NULL pointers, the structure
+ * returned by png_get_text will always contain regular
+ * zero-terminated C strings. They might be empty strings but
+ * they will never be NULL pointers.
*/
#ifdef PNG_TEXT_SUPPORTED
@@ -2263,14 +2513,14 @@ extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr,
#ifdef PNG_tRNS_SUPPORTED
extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep *trans_alpha, int *num_trans,
- png_color_16p *trans_color));
+ png_infop info_ptr, png_bytep *trans, int *num_trans,
+ png_color_16p *trans_values));
#endif
#ifdef PNG_tRNS_SUPPORTED
extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep trans_alpha, int num_trans,
- png_color_16p trans_color));
+ png_infop info_ptr, png_bytep trans, int num_trans,
+ png_color_16p trans_values));
#endif
#ifdef PNG_tRNS_SUPPORTED
@@ -2372,8 +2622,8 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
#endif /* PNG_DEBUG_FILE */
#if (PNG_DEBUG > 1)
-/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
- * non-ISO compilers
+/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on non-ISO
+ * compilers.
*/
# ifdef __STDC__
# ifndef png_debug
@@ -2450,10 +2700,6 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
#define png_debug2(l, m, p1, p2)
#endif
-#if 0
-extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((void));
-#endif
-
extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr));
@@ -2470,6 +2716,74 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
#define PNG_HANDLE_CHUNK_IF_SAFE 2
#define PNG_HANDLE_CHUNK_ALWAYS 3
+/* Added to version 1.2.0 */
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+#ifdef PNG_MMX_CODE_SUPPORTED
+#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */
+#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */
+#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04
+#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08
+#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10
+#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20
+#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40
+#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80
+#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */
+
+#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
+ | PNG_ASM_FLAG_MMX_READ_INTERLACE \
+ | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
+ | PNG_ASM_FLAG_MMX_READ_FILTER_UP \
+ | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
+ | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH )
+#define PNG_MMX_WRITE_FLAGS ( 0 )
+
+#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \
+ | PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU \
+ | PNG_MMX_READ_FLAGS \
+ | PNG_MMX_WRITE_FLAGS )
+
+#define PNG_SELECT_READ 1
+#define PNG_SELECT_WRITE 2
+#endif /* PNG_MMX_CODE_SUPPORTED */
+
+#ifndef PNG_1_0_X
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask)
+ PNGARG((int flag_select, int *compilerID));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask)
+ PNGARG((int flag_select));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_asm_flags)
+ PNGARG((png_structp png_ptr));
+
+/* pngget.c */
+extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold)
+ PNGARG((png_structp png_ptr));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold)
+ PNGARG((png_structp png_ptr));
+
+/* pngset.c */
+extern PNG_EXPORT(void,png_set_asm_flags)
+ PNGARG((png_structp png_ptr, png_uint_32 asm_flags));
+
+/* pngset.c */
+extern PNG_EXPORT(void,png_set_mmx_thresholds)
+ PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold,
+ png_uint_32 mmx_rowbytes_threshold));
+
+#endif /* PNG_1_0_X */
+
+#ifndef PNG_1_0_X
+/* png.c, pnggccrd.c, or pngvcrd.c */
+extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
+#endif /* PNG_1_0_X */
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+
/* Strip the prepended error numbers ("#nnn ") from error and warning
* messages before passing them to the error or warning handler.
*/
@@ -2478,7 +2792,7 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
png_ptr, png_uint_32 strip_mode));
#endif
-/* Added in libpng-1.2.6 */
+/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max));
@@ -2486,36 +2800,14 @@ extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp
png_ptr));
extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
png_ptr));
-/* Added in libpng-1.4.0 */
+/* Added in libpng-1.2.41 */
extern PNG_EXPORT(void,png_set_chunk_cache_max) PNGARG((png_structp
png_ptr, png_uint_32 user_chunk_cache_max));
extern PNG_EXPORT(png_uint_32,png_get_chunk_cache_max)
PNGARG((png_structp png_ptr));
#endif
-#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
-PNG_EXPORT(png_uint_32,png_get_pixels_per_inch) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
-
-PNG_EXPORT(png_uint_32,png_get_x_pixels_per_inch) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
-
-PNG_EXPORT(png_uint_32,png_get_y_pixels_per_inch) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
-
-PNG_EXPORT(float,png_get_x_offset_inches) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
-
-PNG_EXPORT(float,png_get_y_offset_inches) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
-
-#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(png_uint_32,png_get_pHYs_dpi) PNGARG((png_structp png_ptr,
-png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
-#endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
-
-/* Added in libpng-1.4.0 */
+/* Added in libpng-1.2.41 */
#ifdef PNG_IO_STATE_SUPPORTED
extern PNG_EXPORT(png_uint_32,png_get_io_state) PNGARG((png_structp png_ptr));
@@ -2523,19 +2815,19 @@ extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
PNGARG((png_structp png_ptr));
/* The flags returned by png_get_io_state() are the following: */
-#define PNG_IO_NONE 0x0000 /* no I/O at this moment */
-#define PNG_IO_READING 0x0001 /* currently reading */
-#define PNG_IO_WRITING 0x0002 /* currently writing */
-#define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
-#define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
-#define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
-#define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
-#define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
-#define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
+#define PNG_IO_NONE 0x0000 /* no I/O at this moment */
+#define PNG_IO_READING 0x0001 /* currently reading */
+#define PNG_IO_WRITING 0x0002 /* currently writing */
+#define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
+#define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
+#define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
+#define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
+#define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
+#define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
#endif /* ?PNG_IO_STATE_SUPPORTED */
-/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
- * defs
+/* Maintainer: Put new public prototypes here ^, in libpng.3, and in
+ * project defs
*/
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
@@ -2579,39 +2871,29 @@ extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
-#ifdef PNG_USE_READ_MACROS
-/* Inline macros to do direct reads of bytes from the input buffer.
- * The png_get_int_32() routine assumes we are using two's complement
- * format for negative values, which is almost certainly true.
- */
-/* We could make special-case BIG_ENDIAN macros that do direct reads here */
-# define png_get_uint_32(buf) \
- (((png_uint_32)(*(buf)) << 24) + \
- ((png_uint_32)(*((buf) + 1)) << 16) + \
- ((png_uint_32)(*((buf) + 2)) << 8) + \
- ((png_uint_32)(*((buf) + 3))))
-# define png_get_uint_16(buf) \
- (((png_uint_32)(*(buf)) << 8) + \
- ((png_uint_32)(*((buf) + 1))))
-#ifdef PNG_GET_INT_32_SUPPORTED
-# define png_get_int_32(buf) \
- (((png_int_32)(*(buf)) << 24) + \
- ((png_int_32)(*((buf) + 1)) << 16) + \
- ((png_int_32)(*((buf) + 2)) << 8) + \
- ((png_int_32)(*((buf) + 3))))
-#endif
+/* Inline macros to do direct reads of bytes from the input buffer. These
+ * require that you are using an architecture that uses PNG byte ordering
+ * (MSB first) and supports unaligned data storage. I think that PowerPC
+ * in big-endian mode and 680x0 are the only ones that will support this.
+ * The x86 line of processors definitely do not. The png_get_int_32()
+ * routine also assumes we are using two's complement format for negative
+ * values, which is almost certainly true.
+ */
+#ifdef PNG_READ_BIG_ENDIAN_SUPPORTED
+# define png_get_uint_32(buf) ( *((png_uint_32p) (buf)))
+# define png_get_uint_16(buf) ( *((png_uint_16p) (buf)))
+# define png_get_int_32(buf) ( *((png_int_32p) (buf)))
#else
extern PNG_EXPORT(png_uint_32,png_get_uint_32) PNGARG((png_bytep buf));
extern PNG_EXPORT(png_uint_16,png_get_uint_16) PNGARG((png_bytep buf));
-#ifdef PNG_GET_INT_32_SUPPORTED
extern PNG_EXPORT(png_int_32,png_get_int_32) PNGARG((png_bytep buf));
-#endif
-#endif
+#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */
extern PNG_EXPORT(png_uint_32,png_get_uint_31)
PNGARG((png_structp png_ptr, png_bytep buf));
/* No png_get_int_16 -- may be added if there's a real need for it. */
-/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
+/* Place a 32-bit number into a buffer in PNG byte order (big-endian).
+ */
extern PNG_EXPORT(void,png_save_uint_32)
PNGARG((png_bytep buf, png_uint_32 i));
extern PNG_EXPORT(void,png_save_int_32)
@@ -2627,16 +2909,873 @@ extern PNG_EXPORT(void,png_save_uint_16)
/* ************************************************************************* */
-/* Various modes of operation. Note that after an init, mode is set to
- * zero automatically when the structure is created.
+/* These next 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.
+ */
+
+
+/* Various modes of operation, that are visible to applications because
+ * they are used for unknown chunk location.
*/
#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
+
+#ifdef PNG_INTERNAL
+
+/* More modes of operation. Note that after an init, mode is set to
+ * zero automatically when the structure is created.
+ */
#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 */
+#define PNG_PREMULTIPLY_ALPHA 0x4000000L /* Added to libpng-1.2.41 */
+ /* by volker */
+ /* 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
+#define PNG_FLAG_FREE_PLTE 0x1000
+#define PNG_FLAG_FREE_TRNS 0x2000
+#define PNG_FLAG_FREE_HIST 0x4000
+#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 */
+ /* 0x800000L unused */
+ /* 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 ? \
+ ((width) * (((png_uint_32)(pixel_bits)) >> 3)) : \
+ (( ((width) * ((png_uint_32)(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) )
+
+/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
+#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
+/* Place to hold the signature string for a PNG file. */
+#ifdef PNG_USE_GLOBAL_ARRAYS
+ PNG_EXPORT_VAR (PNG_CONST png_byte FARDATA) png_sig[8];
+#else
+#endif
+#endif /* PNG_NO_EXTERN */
+
+/* Constant strings for known chunk types. If you need to add a chunk,
+ * define the name here, and add an invocation of the macro in png.c and
+ * wherever it's needed.
+ */
+#define PNG_IHDR png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'}
+#define PNG_IDAT png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'}
+#define PNG_IEND png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'}
+#define PNG_PLTE png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'}
+#define PNG_bKGD png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'}
+#define PNG_cHRM png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'}
+#define PNG_gAMA png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'}
+#define PNG_hIST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'}
+#define PNG_iCCP png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'}
+#define PNG_iTXt png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'}
+#define PNG_oFFs png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'}
+#define PNG_pCAL png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'}
+#define PNG_sCAL png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'}
+#define PNG_pHYs png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'}
+#define PNG_sBIT png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'}
+#define PNG_sPLT png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'}
+#define PNG_sRGB png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'}
+#define PNG_tEXt png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'}
+#define PNG_tIME png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
+#define PNG_tRNS png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
+#define PNG_zTXt png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
+
+#ifdef PNG_USE_GLOBAL_ARRAYS
+PNG_EXPORT_VAR (png_byte FARDATA) png_IHDR[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_IDAT[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_IEND[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_PLTE[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_bKGD[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_cHRM[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_gAMA[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_hIST[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_iCCP[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_iTXt[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_oFFs[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_pCAL[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_sCAL[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_pHYs[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_sBIT[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_sPLT[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_sRGB[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_tEXt[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_tIME[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_tRNS[5];
+PNG_EXPORT_VAR (png_byte FARDATA) png_zTXt[5];
+#endif /* PNG_USE_GLOBAL_ARRAYS */
+
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* Initialize png_ptr struct for reading, and allocate any other memory.
+ * (old interface - DEPRECATED - use png_create_read_struct instead).
+ */
+extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
+#undef png_read_init
+#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \
+ PNG_LIBPNG_VER_STRING, png_sizeof(png_struct));
+#endif
+
+extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr,
+ png_const_charp user_png_ver, png_size_t png_struct_size));
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
+ png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
+ png_info_size));
+#endif
+
+#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
+/* Initialize png_ptr struct for writing, and allocate any other memory.
+ * (old interface - DEPRECATED - use png_create_write_struct instead).
+ */
+extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
+#undef png_write_init
+#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \
+ PNG_LIBPNG_VER_STRING, png_sizeof(png_struct));
+#endif
+
+extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr,
+ png_const_charp user_png_ver, png_size_t png_struct_size));
+extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr,
+ png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
+ png_info_size));
+
+/* 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));
+
+#ifndef PNG_1_0_X
+/* Function to allocate memory for zlib. */
+PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
+
+/* Function to free memory for zlib */
+PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
+
+#ifdef PNG_SIZE_T
+/* Function to convert a sizeof an item to png_sizeof item */
+ PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
+#endif
+
+/* 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
+#else /* PNG_1_0_X */
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer, png_size_t length));
+#endif
+#endif /* PNG_1_0_X */
+
+/* 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 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
+
+/* Simple function to write the signature */
+PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr));
+
+/* 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
+#ifdef PNG_FIXED_POINT_SUPPORTED
+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
+#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_NO_STDIO)
+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));
+#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
+
+#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
+PNG_EXTERN void png_do_read_premultiply_alpha
+ PNGARG((png_row_infop row_info, png_bytep row));
+#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_values, 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_values, 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
+
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+#ifdef PNG_MMX_CODE_SUPPORTED
+/* png.c */ /* PRIVATE */
+PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr));
+#endif
+#endif
+
+#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
+PNG_EXTERN png_uint_32 png_get_pixels_per_inch PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXTERN png_uint_32 png_get_x_pixels_per_inch PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXTERN png_uint_32 png_get_y_pixels_per_inch PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXTERN float png_get_x_offset_inches PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+PNG_EXTERN float png_get_y_offset_inches PNGARG((png_structp png_ptr,
+png_infop info_ptr));
+
+#ifdef PNG_pHYs_SUPPORTED
+PNG_EXTERN png_uint_32 png_get_pHYs_dpi PNGARG((png_structp png_ptr,
+png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
+#endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
+
+/* Read the chunk header (length + type name) */
+PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr));
+
+/* Added at libpng version 1.2.34 */
+#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 */
+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 1.2.41 */
+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));
+
+/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+
+#endif /* PNG_INTERNAL */
#ifdef __cplusplus
}
diff --git a/pngconf.h b/pngconf.h
index f3a87e1ab..80a9616f8 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,6 +1,12 @@
+
/* pngconf.h - machine configurable file for libpng
*
+ * libpng version 1.2.41beta14 - November 3, 2009
+ * Copyright (c) 1998-2009 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
@@ -19,24 +25,11 @@
#ifndef PNGCONF_H
#define PNGCONF_H
-#include "pngcrush.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
+#include "pngcrush.h"
/*
- * 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.
*/
@@ -44,10 +37,19 @@
# ifndef PNG_USER_PRIVATEBUILD
# define PNG_USER_PRIVATEBUILD
# endif
-# include "pngusr.h"
+#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>
@@ -67,21 +69,29 @@
*/
#ifdef __STDC__
-# ifdef SPECIALBUILD
-# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
- are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
-# endif
+#ifdef SPECIALBUILD
+# pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
+ are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+#endif
-# ifdef PRIVATEBUILD
-# pragma message("PRIVATEBUILD is deprecated.\
- Use PNG_USER_PRIVATEBUILD instead.")
-# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
-# endif
+#ifdef PRIVATEBUILD
+# pragma message("PRIVATEBUILD is deprecated.\
+ Use PNG_USER_PRIVATEBUILD instead.")
+# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+#endif
#endif /* __STDC__ */
+#ifndef PNG_VERSION_INFO_ONLY
+
/* End of material added to libpng-1.2.8 */
-#ifndef PNG_VERSION_INFO_ONLY
+/* 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 */
/* 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
@@ -112,7 +122,7 @@
# define PNG_WRITE_SUPPORTED
#endif
-/* Enabled in 1.4.0. */
+/* Enabled in 1.2.41. */
#ifdef PNG_ALLOW_BENIGN_ERRORS
# define png_benign_error png_warning
# define png_chunk_benign_error png_chunk_warning
@@ -123,7 +133,7 @@
# endif
#endif
-/* Added at libpng version 1.4.0 */
+/* Added in libpng-1.2.41 */
#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
# define PNG_WARNINGS_SUPPORTED
#endif
@@ -137,25 +147,20 @@
#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 */
-#ifndef PNG_NO_MNG_FEATURES
+ * support PNGs that are embedded in MNG datastreams
+ */
+#if !defined(PNG_1_0_X) && !defined(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
@@ -199,7 +204,7 @@
* 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.
+ * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
*/
#ifdef __CYGWIN__
# ifdef ALL_STATIC
@@ -267,14 +272,18 @@
# 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
-# if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
-# define PNG_NO_CONSOLE_IO
+# ifndef PNG_CONSOLE_IO_SUPPORTED
+# ifndef PNG_NO_CONSOLE_IO
+# define PNG_NO_CONSOLE_IO
+# endif
# endif
#endif
@@ -288,7 +297,10 @@
# endif
# endif
# else
-# include <stdio.h>
+# 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)
@@ -310,10 +322,14 @@
#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 */
@@ -329,14 +345,12 @@
# endif
#endif
-/* Enough people need this for various reasons to include it here */
+/* enough people need this for various reasons to include it here */
#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
# include <sys/types.h>
#endif
-/* 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)
+#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
# define PNG_SETJMP_SUPPORTED
#endif
@@ -367,15 +381,14 @@
# 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
-# ifdef _BSD_SOURCE
-# undef _BSD_SOURCE
+# ifndef _BSD_SOURCE
+# define _BSD_SOURCE
# endif
-# define _BSD_SOURCE
# undef PNG_SAVE_BSD_SOURCE
# endif
# endif /* __linux__ */
@@ -388,6 +401,59 @@
#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
@@ -421,6 +487,8 @@
# 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.
@@ -449,25 +517,64 @@
/* 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 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
+ * 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
* 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; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
- * 1.4.0)
+ * 1.0.1c, for consistency)
*/
+/* 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-1.2.41.
+ */
+
+/* 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
@@ -495,35 +602,39 @@
# 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
# ifndef PNG_NO_READ_INVERT_ALPHA
# define PNG_READ_INVERT_ALPHA_SUPPORTED
# endif
+#ifndef PNG_1_0_X
# ifndef PNG_NO_READ_PREMULTIPLY_ALPHA
# define PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
# endif
+#endif
# ifndef PNG_NO_READ_STRIP_ALPHA
# define PNG_READ_STRIP_ALPHA_SUPPORTED
# endif
@@ -541,7 +652,6 @@
# 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. */
@@ -551,25 +661,27 @@
# 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 */
+# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
# endif
#endif
-#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
+#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
+#endif
#endif
#endif /* PNG_READ_SUPPORTED */
#ifdef PNG_WRITE_SUPPORTED
-/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
-#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
!defined(PNG_NO_WRITE_TRANSFORMS)
# define PNG_WRITE_TRANSFORMS_SUPPORTED
#endif
@@ -599,9 +711,11 @@
# 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
@@ -609,10 +723,9 @@
#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
!defined(PNG_WRITE_INTERLACING_SUPPORTED)
- /* This is not required for PNG-compliant encoders, but can cause
- * trouble if left undefined
- */
-# define PNG_WRITE_INTERLACING_SUPPORTED
+#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
+ encoders, but can cause trouble
+ if left undefined */
#endif
#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
@@ -625,16 +738,21 @@
# define PNG_WRITE_FLUSH_SUPPORTED
#endif
-#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
+#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
+#endif
#endif
#endif /* PNG_WRITE_SUPPORTED */
#define PNG_NO_ERROR_NUMBERS
+#ifndef PNG_1_0_X
+# ifndef PNG_NO_ERROR_NUMBERS
+# define PNG_ERROR_NUMBERS_SUPPORTED
+# endif
+#endif /* PNG_1_0_X */
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
@@ -643,7 +761,7 @@
# endif
#endif
-#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifndef PNG_NO_STDIO
# define PNG_TIME_RFC1123_SUPPORTED
#endif
@@ -667,19 +785,65 @@
# 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_SET_USER_LIMITS_SUPPORTED
-# ifndef PNG_NO_SET_USER_LIMITS
-# define PNG_SET_USER_LIMITS_SUPPORTED
+#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
+#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
@@ -689,15 +853,19 @@
# define PNG_USER_HEIGHT_MAX 1000000L
#endif
-/* Added at libpng-1.4.0 */
+#ifndef PNG_1_0_X
+/* Added at libpng-1.2.41 */
#ifndef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 0x7ffffffLL
+# define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
+#endif
#endif
-/* Added at libpng-1.4.0 */
+/* Added at libpng-1.2.41 */
+#ifndef PNG_1_0_X
#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
# define PNG_IO_STATE_SUPPORTED
#endif
+#endif
#ifndef PNG_LITERAL_SHARP
# define PNG_LITERAL_SHARP 0x23
@@ -708,13 +876,15 @@
#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
@@ -731,17 +901,21 @@
#endif
*/
-#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 */
+/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
+/*
+#define 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,
@@ -749,21 +923,12 @@
* 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)
@@ -777,7 +942,6 @@
# 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
@@ -878,6 +1042,7 @@
# 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
@@ -1004,6 +1169,15 @@
# endif
#endif
+#ifndef PNG_NO_CONVERT_tIME
+# ifndef _WIN32_WCE
+/* The "tm" structure is not supported on WindowsCE */
+# ifndef PNG_CONVERT_tIME_SUPPORTED
+# define PNG_CONVERT_tIME_SUPPORTED
+# endif
+# endif
+#endif
+
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
@@ -1016,6 +1190,7 @@
# 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
@@ -1031,12 +1206,10 @@
# define PNG_INFO_IMAGE_SUPPORTED
#endif
-/* Need the time information for reading tIME chunks */
-#ifdef PNG_tIME_SUPPORTED
-# ifndef _WIN32_WCE
+/* Need the time information for converting tIME chunks */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
/* "time.h" functions are not supported on WindowsCE */
# include <time.h>
-# endif
#endif
/* Some typedefs to get us started. These should be safe on most of the
@@ -1044,29 +1217,28 @@
* 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.
+ * 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.
*/
-#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;
-#ifdef PNG_NO_SIZE_T
- typedef unsigned int png_size_t;
+/* 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))
#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
- * pngpriv.h header. Needs modification for other compilers besides
+ * PNG_INTERNAL section. 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
@@ -1075,8 +1247,7 @@ 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
@@ -1141,11 +1312,11 @@ typedef char FAR * png_charp;
typedef png_fixed_point FAR * png_fixed_point_p;
#ifndef PNG_NO_STDIO
-# ifdef _WIN32_WCE
+#ifdef _WIN32_WCE
typedef HANDLE png_FILE_p;
-# else
+#else
typedef FILE * png_FILE_p;
-# endif
+#endif
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -1168,7 +1339,20 @@ typedef double FAR * FAR * png_doublepp;
/* Pointers to pointers to pointers; i.e., pointer to array */
typedef char FAR * FAR * FAR * png_charppp;
-/* Define PNG_BUILD_DLL if the module being built is a Windows
+#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
* LIBPNG DLL.
*
* Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
@@ -1188,6 +1372,42 @@ typedef char FAR * FAR * FAR * png_charppp;
#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
@@ -1196,8 +1416,6 @@ typedef char FAR * FAR * FAR * png_charppp;
# 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
@@ -1234,40 +1452,41 @@ typedef char FAR * FAR * FAR * png_charppp;
# ifndef PNG_IMPEXP
-# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
-# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
-
- /* Borland/Microsoft */
-# if defined(_MSC_VER) || defined(__BORLANDC__)
-# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
-# define PNG_EXPORT PNG_EXPORT_TYPE1
-# else
-# define PNG_EXPORT PNG_EXPORT_TYPE2
-# ifdef PNG_BUILD_DLL
-# define PNG_IMPEXP __export
-# else
-# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
-# endif /* Exists in Borland C++ for
- C++ classes (== huge) */
-# endif
-# endif
+# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
+# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
+
+ /* Borland/Microsoft */
+# if defined(_MSC_VER) || defined(__BORLANDC__)
+# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
+# define PNG_EXPORT PNG_EXPORT_TYPE1
+# else
+# define PNG_EXPORT PNG_EXPORT_TYPE2
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP __export
+# else
+# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
+ VC++ */
+# endif /* Exists in Borland C++ for
+ C++ classes (== huge) */
+# endif
+# endif
-# ifndef PNG_IMPEXP
-# ifdef PNG_BUILD_DLL
-# define PNG_IMPEXP __declspec(dllexport)
-# else
-# define PNG_IMPEXP __declspec(dllimport)
-# endif
-# endif
+# ifndef PNG_IMPEXP
+# ifdef PNG_BUILD_DLL
+# define PNG_IMPEXP __declspec(dllexport)
+# else
+# define PNG_IMPEXP __declspec(dllimport)
+# endif
+# endif
# endif /* PNG_IMPEXP */
#else /* !(DLL || non-cygwin WINDOWS) */
# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
-# ifndef PNGAPI
-# define PNGAPI _System
-# endif
+# ifndef PNGAPI
+# define PNGAPI _System
+# endif
# else
-# if 0 /* ... other platforms, with other meanings */
-# endif
+# if 0 /* ... other platforms, with other meanings */
+# endif
# endif
#endif
@@ -1282,122 +1501,79 @@ typedef char FAR * FAR * FAR * png_charppp;
# 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
-/* Users may want to use these so they are not private. Any library
- * functions that are passed far data must be model-independent.
+#ifdef PNG_USE_GLOBAL_ARRAYS
+# ifndef PNG_EXPORT_VAR
+# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
+# endif
+#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.
*/
+#ifndef PNG_ABORT
+# 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_NO_SETJMP)
-#endif
-
-/* memory model/platform independent fns */
-#ifndef PNG_ABORT
-# ifdef _WINDOWS_
-# define PNG_ABORT() ExitProcess(0)
-# else
-# define PNG_ABORT() abort()
-# endif
+ (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
#endif
-#ifdef USE_FAR_KEYWORD
+#ifdef USE_FAR_KEYWORD /* memory model independent fns */
/* 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_strcpy _fstrcpy
-# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
+# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
# define png_strlen _fstrlen
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
# define png_memset _fmemset
-# 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 */
-# define png_snprintf2 _snprintf
-# define png_snprintf6 _snprintf
-# else
-# define png_snprintf snprintf /* Added to v 1.2.19 */
-# define png_snprintf2 snprintf
-# define png_snprintf6 snprintf
-# endif
+#else /* use the usual functions */
+# define CVT_PTR(ptr) (ptr)
+# define CVT_PTR_NOCHECK(ptr) (ptr)
+# ifndef PNG_NO_SNPRINTF
+# ifdef _MSC_VER
+# define png_snprintf _snprintf /* Added to v 1.2.19 */
+# define png_snprintf2 _snprintf
+# define png_snprintf6 _snprintf
# else
- /* You don't have or don't want to use snprintf(). Caution: Using
- * sprintf instead of snprintf exposes your application to accidental
- * or malevolent buffer overflows. If you don't have snprintf()
- * as a general rule you should provide one (you can get one from
- * Portable OpenSSH).
- */
-# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
-# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
-# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
- sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
+# define png_snprintf snprintf /* Added to v 1.2.19 */
+# define png_snprintf2 snprintf
+# define png_snprintf6 snprintf
# endif
-# endif
-#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 */
+ /* You don't have or don't want to use snprintf(). Caution: Using
+ * sprintf instead of snprintf exposes your application to accidental
+ * or malevolent buffer overflows. If you don't have snprintf()
+ * as a general rule you should provide one (you can get one from
+ * Portable OpenSSH). */
+# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
+# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
+# 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 */
/* Just a little check that someone hasn't tried to define something
* contradictory.
@@ -1407,7 +1583,6 @@ typedef char FAR * FAR * FAR * png_charppp;
# define PNG_ZBUF_SIZE 65536L
#endif
-
/* Added at libpng-1.2.8 */
#endif /* PNG_VERSION_INFO_ONLY */
diff --git a/pngcrush.c b/pngcrush.c
index f26ef0f7b..ce34b85c3 100644
--- a/pngcrush.c
+++ b/pngcrush.c
@@ -57,7 +57,7 @@
*
*/
-#define PNGCRUSH_VERSION "1.7.3"
+#define PNGCRUSH_VERSION "1.7.5"
/*
#define PNGCRUSH_COUNT_COLORS
@@ -160,7 +160,9 @@
Change log:
-Version 1.7.4 (built with libpng-1.4.0rc01 and zlib-1.2.3.2)
+Version 1.7.5 (built with libpng-1.2.41beta14 and zlib-1.2.3.2)
+
+Version 1.7.4 (built with libpng-1.2.40rc01 and zlib-1.2.3.2)
Use unmodified pngconf.h from libpng-1.2.41beta05 or later.
Version 1.7.3 (built with libpng-1.2.40 and zlib-1.2.3.2)
@@ -5241,14 +5243,11 @@ int main(int argc, char *argv[])
png_textp text_ptr;
int num_text = 0;
-P1("whoopee.\n");
-
if (png_get_text
(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0
|| text_inputs)
{
int ntext;
-P1("again.\n");
#ifdef PNG_iTXt_SUPPORTED
P1( "Handling %d tEXt/zTXt/iTXt chunks after IDAT\n",
diff --git a/pngcrush.h b/pngcrush.h
index e33ded094..9f89e2cb3 100644
--- a/pngcrush.h
+++ b/pngcrush.h
@@ -15,6 +15,8 @@
#include <malloc.h>
*/
+#define PNG_NO_GLOBAL_ARRAYS
+
#ifndef PNG_NO_ZALLOC_ZERO
# define PNG_NO_ZALLOC_ZERO /* speeds it up a little */
#endif
diff --git a/pngerror.c b/pngerror.c
index d19623346..993a3bcb6 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -16,9 +16,9 @@
* at each function.
*/
+#define PNG_INTERNAL
#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,
diff --git a/pngget.c b/pngget.c
index 771473918..ba66b98e8 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -12,9 +12,9 @@
*
*/
+#define PNG_INTERNAL
#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)
@@ -26,7 +26,7 @@ png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
return(0);
}
-png_size_t PNGAPI
+png_uint_32 PNGAPI
png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
@@ -802,7 +802,7 @@ 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_alpha, int *num_trans, png_color_16p *trans_color)
+ png_bytep *trans, int *num_trans, png_color_16p *trans_values)
{
png_uint_32 retval = 0;
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
@@ -811,25 +811,25 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- if (trans_alpha != NULL)
+ if (trans != NULL)
{
- *trans_alpha = info_ptr->trans_alpha;
+ *trans = info_ptr->trans;
retval |= PNG_INFO_tRNS;
}
- if (trans_color != NULL)
- *trans_color = &(info_ptr->trans_color);
+ if (trans_values != NULL)
+ *trans_values = &(info_ptr->trans_values);
}
else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
{
- if (trans_color != NULL)
+ if (trans_values != NULL)
{
- *trans_color = &(info_ptr->trans_color);
+ *trans_values = &(info_ptr->trans_values);
retval |= PNG_INFO_tRNS;
}
- if (trans_alpha != NULL)
- *trans_alpha = NULL;
+ if (trans != NULL)
+ *trans = NULL;
}
if (num_trans != NULL)
{
@@ -872,13 +872,60 @@ png_get_user_chunk_ptr(png_structp png_ptr)
#endif
#ifdef PNG_WRITE_SUPPORTED
-png_size_t PNGAPI
+png_uint_32 PNGAPI
png_get_compression_buffer_size(png_structp png_ptr)
{
- return (png_ptr ? png_ptr->zbuf_size : 0L);
+ return (png_uint_32)(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 */
@@ -892,7 +939,7 @@ 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 */
+/* This function was added to libpng 1.2.41 */
png_uint_32 PNGAPI
png_get_chunk_cache_max (png_structp png_ptr)
{
diff --git a/pngmem.c b/pngmem.c
index 47ab07e5d..1a0a5b589 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
* Copyright (c) 1998-2009 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.)
@@ -17,9 +17,9 @@
* identify the replacement functions.
*/
+#define PNG_INTERNAL
#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__)
@@ -31,7 +31,7 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
- return (png_create_struct_2(type, NULL, NULL));
+ return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
}
/* Alternate version of png_create_struct, for use with user-defined malloc. */
@@ -70,7 +70,7 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
- png_destroy_struct_2(struct_ptr, NULL, NULL);
+ png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
}
/* Free memory allocated by a png_create_struct() call */
@@ -115,7 +115,7 @@ 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_alloc_size_t size)
+png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
@@ -126,7 +126,7 @@ png_calloc(png_structp png_ptr, png_alloc_size_t size)
}
png_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_alloc_size_t size)
+png_malloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
@@ -139,12 +139,12 @@ png_malloc(png_structp png_ptr, png_alloc_size_t 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_alloc_size_t size)
+png_malloc_default(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
@@ -200,9 +200,9 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t 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);
}
@@ -228,9 +228,9 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t 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);
}
@@ -257,9 +257,9 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t 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);
}
@@ -273,9 +273,9 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t 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
@@ -347,7 +347,7 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
- return (png_create_struct_2(type, NULL, NULL));
+ return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
}
/* Allocate memory for a png_struct or a png_info. The malloc and
@@ -401,7 +401,7 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
- png_destroy_struct_2(struct_ptr, NULL, NULL);
+ png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
}
/* Free memory allocated by a png_create_struct() call */
@@ -442,7 +442,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
*/
png_voidp PNGAPI
-png_calloc(png_structp png_ptr, png_alloc_size_t size)
+png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
@@ -453,7 +453,7 @@ png_calloc(png_structp png_ptr, png_alloc_size_t size)
}
png_voidp PNGAPI
-png_malloc(png_structp png_ptr, png_alloc_size_t size)
+png_malloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
@@ -466,12 +466,12 @@ png_malloc(png_structp png_ptr, png_alloc_size_t 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_alloc_size_t size)
+png_malloc_default(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
@@ -558,13 +558,16 @@ 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_alloc_size_t size)
+png_malloc_warn(png_structp png_ptr, png_uint_32 size)
{
png_voidp ptr;
png_uint_32 save_flags;
@@ -577,7 +580,34 @@ png_malloc_warn(png_structp png_ptr, png_alloc_size_t 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
diff --git a/pngpread.c b/pngpread.c
index 3ac38f139..239c04d8a 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.38 [July 16, 2009]
* Copyright (c) 1998-2009 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.)
@@ -11,9 +11,9 @@
* and license in png.h
*/
+#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-#include "pngpriv.h"
/* Push model modes */
#define PNG_READ_SIG_MODE 0
@@ -149,61 +149,63 @@ 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)
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IHDR;
+ PNG_CONST PNG_IDAT;
+ PNG_CONST PNG_IEND;
+ PNG_CONST PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
+ PNG_CONST PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
+ PNG_CONST PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
+ PNG_CONST PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
+ PNG_CONST PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
+ PNG_CONST PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
+ PNG_CONST PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
+ PNG_CONST PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
+ PNG_CONST PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
+ PNG_CONST PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
+ PNG_CONST PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
+ PNG_CONST PNG_sCAL;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
+ PNG_CONST PNG_sRGB;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
+ PNG_CONST PNG_sPLT;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
+ PNG_CONST PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
+ PNG_CONST PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
+ PNG_CONST PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
+ PNG_CONST 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
@@ -321,7 +323,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
return;
if (png_ptr->mode & PNG_AFTER_IDAT)
- png_benign_error(png_ptr, "Too many IDATs found");
+ png_error(png_ptr, "Too many IDAT's found");
}
png_ptr->idat_size = png_ptr->push_length;
@@ -698,7 +700,7 @@ 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_size_t)new_max);
+ (png_uint_32)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;
@@ -727,7 +729,9 @@ png_push_restore_buffer(png_structp png_ptr, png_bytep buffer,
void /* PRIVATE */
png_push_read_IDAT(png_structp png_ptr)
{
- PNG_IDAT;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IDAT;
+#endif
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
{
png_byte chunk_length[4];
@@ -824,7 +828,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
int ret;
if ((png_ptr->flags & PNG_FLAG_ZLIB_FINISHED) && buffer_length)
- png_benign_error(png_ptr, "Extra compression data");
+ png_error(png_ptr, "Extra compression data");
png_ptr->zstream.next_in = buffer;
png_ptr->zstream.avail_in = (uInt)buffer_length;
@@ -836,7 +840,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
if (ret == Z_STREAM_END)
{
if (png_ptr->zstream.avail_in)
- png_benign_error(png_ptr, "Extra compressed data");
+ png_error(png_ptr, "Extra compressed data");
if (!(png_ptr->zstream.avail_out))
{
@@ -893,7 +897,8 @@ 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(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+ png_memcpy_check(png_ptr, 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);
@@ -924,7 +929,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
@@ -933,14 +938,14 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
if (png_ptr->pass == 6 && png_ptr->height <= 4)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
@@ -960,7 +965,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
@@ -980,7 +985,7 @@ png_push_process_row(png_structp png_ptr)
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
@@ -988,7 +993,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
@@ -1010,7 +1015,7 @@ png_push_process_row(png_structp png_ptr)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
@@ -1030,13 +1035,13 @@ png_push_process_row(png_structp png_ptr)
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 6) /* Pass 5 might be empty */
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
@@ -1055,7 +1060,7 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->pass == 6) /* Skip top generated row */
{
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
@@ -1069,7 +1074,7 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->pass != 6)
break;
- png_push_have_row(png_ptr, NULL);
+ png_push_have_row(png_ptr, png_bytep_NULL);
png_read_push_finish_row(png_ptr);
}
}
@@ -1085,6 +1090,7 @@ 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 */
@@ -1103,6 +1109,7 @@ 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)
@@ -1112,7 +1119,7 @@ png_read_push_finish_row(png_structp png_ptr)
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
- png_memset(png_ptr->prev_row, 0,
+ png_memset_check(png_ptr, png_ptr->prev_row, 0,
png_ptr->rowbytes + 1);
do
{
@@ -1172,7 +1179,7 @@ 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_size_t)(length + 1));
+ (png_uint_32)(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;
@@ -1226,7 +1233,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
text++;
text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
+ (png_uint_32)png_sizeof(png_text));
text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
text_ptr->key = key;
#ifdef PNG_iTXt_SUPPORTED
@@ -1242,7 +1249,7 @@ 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
@@ -1272,7 +1279,7 @@ 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_size_t)(length + 1));
+ (png_uint_32)(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;
@@ -1365,7 +1372,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
if (text == NULL)
{
text = (png_charp)png_malloc(png_ptr,
- (png_ptr->zbuf_size
+ (png_uint_32)(png_ptr->zbuf_size
- png_ptr->zstream.avail_out + key_size + 1));
png_memcpy(text + key_size, png_ptr->zbuf,
@@ -1384,7 +1391,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
tmp = text;
text = (png_charp)png_malloc(png_ptr, text_size +
- (png_ptr->zbuf_size
+ (png_uint_32)(png_ptr->zbuf_size
- png_ptr->zstream.avail_out + 1));
png_memcpy(text, tmp, text_size);
@@ -1428,7 +1435,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
text += key_size;
text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
+ (png_uint_32)png_sizeof(png_text));
text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
text_ptr->key = key;
#ifdef PNG_iTXt_SUPPORTED
@@ -1443,7 +1450,7 @@ 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
@@ -1471,7 +1478,7 @@ 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_size_t)(length + 1));
+ (png_uint_32)(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;
@@ -1548,7 +1555,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
text++;
text_ptr = (png_textp)png_malloc(png_ptr,
- png_sizeof(png_text));
+ (png_uint_32)png_sizeof(png_text));
text_ptr->compression = comp_flag + 2;
text_ptr->key = key;
@@ -1564,7 +1571,7 @@ 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
@@ -1619,7 +1626,7 @@ 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_size_t)length);
+ (png_uint_32)length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
@@ -1684,8 +1691,10 @@ 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;
diff --git a/pngpriv.h b/pngpriv.h
index c0983cac5..b541e2ae9 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,841 +1,12 @@
/* pngpriv.h - private declarations for use inside libpng
*
- * libpng version 1.4.0rc01 - October 21, 2009
+ * libpng version 1.2.41beta14 - November 3, 2009
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 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 */
-#define PNG_PREMULTIPLY_ALPHA 0x4000000L /* Added to libpng-1.4.0 */
- /* by volker */
- /* 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));
-#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
-
-#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
-PNG_EXTERN void png_do_read_premultiply_alpha
- PNGARG((png_row_infop row_info, png_bytep row));
-#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));
-
-/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* PNG_VERSION_INFO_ONLY */
-#endif /* PNGPRIV_H */
+/* This is a placeholder for a header file that is introduced in
+ * libpng-1.4.0 */
diff --git a/pngread.c b/pngread.c
index b45b6cf10..7da0e2120 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -14,9 +14,9 @@
* read a PNG file or stream.
*/
+#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_READ_SUPPORTED
-#include "pngpriv.h"
/* Create a PNG structure for reading, and allocate any memory needed. */
@@ -27,7 +27,7 @@ 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, NULL, NULL, NULL));
+ warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
}
/* Alternate create PNG structure for reading, and allocate any memory needed. */
@@ -42,7 +42,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
volatile
#endif
png_structp png_ptr;
- int png_cleanup_needed = 0;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
@@ -56,7 +55,7 @@ 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,
- malloc_fn, mem_ptr);
+ (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
#else
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
#endif
@@ -65,20 +64,32 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
/* 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;
+ png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
+ png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
+ /* Added at libpng-1.2.41 */
+ 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))
#endif
- PNG_ABORT();
+ {
+ 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));
+#endif
#endif /* PNG_SETJMP_SUPPORTED */
#ifdef PNG_USER_MEM_SUPPORTED
@@ -107,6 +118,10 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
* For versions after libpng 1.0, we will be compatible, so we need
* only check the first digit.
*/
+#ifdef PNG_iTXt_SUPPORTED
+ png_size_t length;
+#endif
+
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
@@ -128,64 +143,216 @@ 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_warning(png_ptr,
+ png_error(png_ptr,
"Incompatible libpng version in application and library");
-
- png_cleanup_needed = 1;
}
+
+#ifdef PNG_iTXt_SUPPORTED
+ /* Any library mismatch is trouble for png_set_read() in
+ * libpng-1.2.41 and later 1.2.x, so we store the caller's
+ * library version string.
+ */
+
+ length = (png_size_t)png_strlen(user_png_ver) + 1;
+ png_debug1(3, "allocating user_png_ver for png_ptr (%lu bytes)",
+ (unsigned long)length);
+ png_ptr->user_png_ver = (png_charp)png_malloc_warn(png_ptr,
+ (png_uint_32)length);
+
+ if (png_ptr->user_png_ver == NULL)
+ png_warning(png_ptr, "Could not store png_ptr->user_png_ver");
+
+ else
+ png_memcpy(png_ptr->user_png_ver, user_png_ver, length);
+
+#endif /* PNG_iTXt_SUPPORTED */
}
- if (!png_cleanup_needed)
- {
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_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->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;
- if (!png_cleanup_needed)
- {
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_MEM_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;
+ 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_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_cleanup_needed)
+ if (png_ptr == NULL)
+ return;
+
+ do
{
- /* 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);
+ if (user_png_ver[i] != png_libpng_ver[i])
+ {
+#ifdef PNG_LEGACY_SUPPORTED
+ png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
- png_destroy_struct((png_voidp)png_ptr);
+ png_ptr->warning_fn = NULL;
+ png_warning(png_ptr,
+ "Application uses deprecated png_read_init() and should be recompiled.");
+ break;
#endif
- return (NULL);
+ }
+ } 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;
}
- png_ptr->zstream.next_out = png_ptr->zbuf;
- png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
+ /* 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
- png_set_read_fn(png_ptr, NULL, NULL);
+ /* 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;
+ /* Added at libpng-1.2.41 */
+ png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_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");
+ }
- return (png_ptr);
-}
+ 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
@@ -231,61 +398,63 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
for (;;)
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IHDR;
+ PNG_CONST PNG_IDAT;
+ PNG_CONST PNG_IEND;
+ PNG_CONST PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
+ PNG_CONST PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
+ PNG_CONST PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
+ PNG_CONST PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
+ PNG_CONST PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
+ PNG_CONST PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
+ PNG_CONST PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
+ PNG_CONST PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
+ PNG_CONST PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
+ PNG_CONST PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
+ PNG_CONST PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
+ PNG_CONST PNG_sCAL;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
+ PNG_CONST PNG_sPLT;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
+ PNG_CONST PNG_sRGB;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
+ PNG_CONST PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
+ PNG_CONST PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
+ PNG_CONST PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
+ PNG_CONST 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;
@@ -445,7 +614,7 @@ 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_IDAT;
+ PNG_CONST 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};
@@ -455,7 +624,7 @@ 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)",
- (unsigned long) png_ptr->row_number, png_ptr->pass);
+ png_ptr->row_number, png_ptr->pass);
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
@@ -464,31 +633,31 @@ 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
}
@@ -599,7 +768,7 @@ 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_benign_error(png_ptr, "Extra compressed data");
+ png_error(png_ptr, "Extra compressed data");
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
@@ -623,7 +792,8 @@ 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(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
+ png_memcpy_check(png_ptr, 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) &&
@@ -723,14 +893,14 @@ 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, NULL);
+ png_read_row(png_ptr, rptr, png_bytep_NULL);
rp++;
}
else if (dp != NULL)
for (i = 0; i < num_rows; i++)
{
png_bytep dptr = *dp;
- png_read_row(png_ptr, NULL, dptr);
+ png_read_row(png_ptr, png_bytep_NULL, dptr);
dp++;
}
}
@@ -766,7 +936,7 @@ 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
@@ -779,7 +949,7 @@ 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, NULL);
+ png_read_row(png_ptr, *rp, png_bytep_NULL);
rp++;
}
}
@@ -802,61 +972,63 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
do
{
- PNG_IHDR;
- PNG_IDAT;
- PNG_IEND;
- PNG_PLTE;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IHDR;
+ PNG_CONST PNG_IDAT;
+ PNG_CONST PNG_IEND;
+ PNG_CONST PNG_PLTE;
#ifdef PNG_READ_bKGD_SUPPORTED
- PNG_bKGD;
+ PNG_CONST PNG_bKGD;
#endif
#ifdef PNG_READ_cHRM_SUPPORTED
- PNG_cHRM;
+ PNG_CONST PNG_cHRM;
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
- PNG_gAMA;
+ PNG_CONST PNG_gAMA;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
- PNG_hIST;
+ PNG_CONST PNG_hIST;
#endif
#ifdef PNG_READ_iCCP_SUPPORTED
- PNG_iCCP;
+ PNG_CONST PNG_iCCP;
#endif
#ifdef PNG_READ_iTXt_SUPPORTED
- PNG_iTXt;
+ PNG_CONST PNG_iTXt;
#endif
#ifdef PNG_READ_oFFs_SUPPORTED
- PNG_oFFs;
+ PNG_CONST PNG_oFFs;
#endif
#ifdef PNG_READ_pCAL_SUPPORTED
- PNG_pCAL;
+ PNG_CONST PNG_pCAL;
#endif
#ifdef PNG_READ_pHYs_SUPPORTED
- PNG_pHYs;
+ PNG_CONST PNG_pHYs;
#endif
#ifdef PNG_READ_sBIT_SUPPORTED
- PNG_sBIT;
+ PNG_CONST PNG_sBIT;
#endif
#ifdef PNG_READ_sCAL_SUPPORTED
- PNG_sCAL;
+ PNG_CONST PNG_sCAL;
#endif
#ifdef PNG_READ_sPLT_SUPPORTED
- PNG_sPLT;
+ PNG_CONST PNG_sPLT;
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
- PNG_sRGB;
+ PNG_CONST PNG_sRGB;
#endif
#ifdef PNG_READ_tEXt_SUPPORTED
- PNG_tEXt;
+ PNG_CONST PNG_tEXt;
#endif
#ifdef PNG_READ_tIME_SUPPORTED
- PNG_tIME;
+ PNG_CONST PNG_tIME;
#endif
#ifdef PNG_READ_tRNS_SUPPORTED
- PNG_tRNS;
+ PNG_CONST PNG_tRNS;
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
- PNG_zTXt;
+ PNG_CONST 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;
@@ -870,7 +1042,7 @@ 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_benign_error(png_ptr, "Too many IDATs found");
+ png_error(png_ptr, "Too many IDAT's found");
}
png_handle_unknown(png_ptr, info_ptr, length);
if (!png_memcmp(chunk_name, png_PLTE, 4))
@@ -883,7 +1055,7 @@ 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_benign_error(png_ptr, "Too many IDATs found");
+ png_error(png_ptr, "Too many IDAT's found");
png_crc_finish(png_ptr, length);
}
else if (!png_memcmp(chunk_name, png_PLTE, 4))
@@ -1072,19 +1244,37 @@ 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_alpha);
+ png_free(png_ptr, png_ptr->trans);
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)
@@ -1135,6 +1325,11 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
#endif /* PNG_TEXT_SUPPORTED */
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+/* New member added in libpng-1.2.41, will be removed from 1.4.0 */
+#ifdef PNG_iTXt_SUPPORTED
+ png_free(png_ptr, png_ptr->user_png_ver);
+#endif
+
/* Save the important info out of the png_struct, in case it is
* being used again.
*/
@@ -1184,6 +1379,12 @@ 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).
@@ -1284,6 +1485,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_swap(png_ptr);
#endif
+/* Added at libpng-1.2.41 */
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency
*/
@@ -1291,6 +1493,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_invert_alpha(png_ptr);
#endif
+/* Added at libpng-1.2.41 */
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
/* Expand grayscale image to RGB
*/
@@ -1308,17 +1511,19 @@ 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));
- for (iptr=0; iptr<info_ptr->height; iptr++)
- info_ptr->row_pointers[iptr] = NULL;
+ png_memset(info_ptr->row_pointers, 0, info_ptr->height
+ * png_sizeof(png_bytep));
+#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,
diff --git a/pngrio.c b/pngrio.c
index 1c28688e0..e33525076 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -18,9 +18,9 @@
* libpng use it at run time with png_set_read_fn(...).
*/
+#define PNG_INTERNAL
#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
@@ -56,7 +56,13 @@ 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.
*/
- check = fread(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+#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
if (check != length)
png_error(png_ptr, "Read Error");
@@ -73,7 +79,7 @@ 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)
{
- png_size_t check;
+ int check;
png_byte *n_data;
png_FILE_p io_ptr;
@@ -84,7 +90,12 @@ 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
{
@@ -95,7 +106,12 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
- err = fread(buf, 1, read, io_ptr);
+#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
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
if (err != read)
break;
@@ -152,7 +168,7 @@ 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
diff --git a/pngrtran.c b/pngrtran.c
index 7cd0fa819..1241224a5 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -16,9 +16,9 @@
* in pngtrans.c.
*/
+#define PNG_INTERNAL
#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
@@ -48,7 +48,7 @@ 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:
@@ -624,6 +624,7 @@ 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)
@@ -636,7 +637,22 @@ 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. */
@@ -704,7 +720,7 @@ 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
@@ -735,6 +751,7 @@ 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
@@ -749,6 +766,11 @@ 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
@@ -760,6 +782,9 @@ 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)
@@ -808,9 +833,9 @@ 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_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;
+ 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;
}
break;
@@ -820,9 +845,9 @@ 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_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;
+ 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;
}
break;
@@ -832,9 +857,9 @@ 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_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;
+ 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;
}
break;
@@ -868,7 +893,7 @@ 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_alpha[i] = (png_byte)(255 - png_ptr->trans_alpha[i]);
+ png_ptr->trans[i] = (png_byte)(255 - png_ptr->trans[i]);
}
}
#endif
@@ -890,7 +915,7 @@ png_init_read_transformations(png_structp png_ptr)
k=0;
for (i=0; i<png_ptr->num_trans; i++)
{
- if (png_ptr->trans_alpha[i] != 0 && png_ptr->trans_alpha[i] != 0xff)
+ if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff)
k=1; /* Partial transparency is present */
}
if (k == 0)
@@ -972,26 +997,26 @@ png_init_read_transformations(png_structp png_ptr)
}
for (i = 0; i < num_palette; i++)
{
- if (i < (int)png_ptr->num_trans && png_ptr->trans_alpha[i] != 0xff)
+ if (i < (int)png_ptr->num_trans && png_ptr->trans[i] != 0xff)
{
- if (png_ptr->trans_alpha[i] == 0)
+ if (png_ptr->trans[i] == 0)
{
palette[i] = back;
}
- else /* if (png_ptr->trans_alpha[i] != 0xff) */
+ else /* if (png_ptr->trans[i] != 0xff) */
{
png_byte v, w;
v = png_ptr->gamma_to_1[palette[i].red];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.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[palette[i].green];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.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[palette[i].blue];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue);
+ png_composite(w, v, png_ptr->trans[i], back_1.blue);
palette[i].blue = png_ptr->gamma_from_1[w];
}
}
@@ -1111,19 +1136,19 @@ png_init_read_transformations(png_structp png_ptr)
for (i = 0; i < istop; i++)
{
- if (png_ptr->trans_alpha[i] == 0)
+ if (png_ptr->trans[i] == 0)
{
palette[i] = back;
}
- else if (png_ptr->trans_alpha[i] != 0xff)
+ else if (png_ptr->trans[i] != 0xff)
{
/* The png_composite() macro is defined in png.h */
png_composite(palette[i].red, palette[i].red,
- png_ptr->trans_alpha[i], back.red);
+ png_ptr->trans[i], back.red);
png_composite(palette[i].green, palette[i].green,
- png_ptr->trans_alpha[i], back.green);
+ png_ptr->trans[i], back.green);
png_composite(palette[i].blue, palette[i].blue,
- png_ptr->trans_alpha[i], back.blue);
+ png_ptr->trans[i], back.blue);
}
}
@@ -1277,8 +1302,10 @@ 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
@@ -1345,14 +1372,14 @@ 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_alpha, png_ptr->num_trans);
+ png_ptr->palette, png_ptr->trans, 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_color));
+ &(png_ptr->trans_values));
else
png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1,
NULL);
@@ -1434,7 +1461,7 @@ 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_color), &(png_ptr->background)
+ &(png_ptr->trans_values), &(png_ptr->background)
#ifdef PNG_READ_GAMMA_SUPPORTED
, &(png_ptr->background_1),
png_ptr->gamma_table, png_ptr->gamma_from_1,
@@ -1569,7 +1596,11 @@ 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;
@@ -1659,6 +1690,9 @@ 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];
@@ -1765,7 +1799,11 @@ 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;
@@ -1819,6 +1857,9 @@ 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)
@@ -1909,6 +1950,9 @@ 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)
@@ -2093,6 +2137,9 @@ 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)
@@ -2263,6 +2310,9 @@ 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)
@@ -2367,6 +2417,9 @@ 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;
@@ -2641,6 +2694,188 @@ 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.
@@ -2649,7 +2884,7 @@ png_build_grayscale_palette(int bit_depth, png_colorp palette)
*/
void /* PRIVATE */
png_do_background(png_row_infop row_info, png_bytep row,
- png_color_16p trans_color, png_color_16p background
+ png_color_16p trans_values, 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,
@@ -2666,8 +2901,11 @@ 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_color)))
+ (row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_values)))
{
switch (row_info->color_type)
{
@@ -2682,7 +2920,7 @@ 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_color->gray)
+ == trans_values->gray)
{
*sp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@@ -2708,7 +2946,7 @@ 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_color->gray)
+ == trans_values->gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@@ -2738,7 +2976,7 @@ 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_color->gray)
+ == trans_values->gray)
{
*sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@@ -2765,7 +3003,7 @@ 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_color->gray)
+ == trans_values->gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@@ -2795,7 +3033,7 @@ 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_color->gray)
+ == trans_values->gray)
{
*sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
*sp |= (png_byte)(background->gray << shift);
@@ -2820,7 +3058,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
- if (*sp == trans_color->gray)
+ if (*sp == trans_values->gray)
{
*sp = (png_byte)background->gray;
}
@@ -2836,7 +3074,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
sp = row;
for (i = 0; i < row_width; i++, sp++)
{
- if (*sp == trans_color->gray)
+ if (*sp == trans_values->gray)
{
*sp = (png_byte)background->gray;
}
@@ -2856,7 +3094,7 @@ 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_color->gray)
+ if (v == trans_values->gray)
{
/* Background is already in screen gamma */
*sp = (png_byte)((background->gray >> 8) & 0xff);
@@ -2879,7 +3117,7 @@ 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_color->gray)
+ if (v == trans_values->gray)
{
*sp = (png_byte)((background->gray >> 8) & 0xff);
*(sp + 1) = (png_byte)(background->gray & 0xff);
@@ -2902,9 +3140,9 @@ 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_color->red &&
- *(sp + 1) == trans_color->green &&
- *(sp + 2) == trans_color->blue)
+ if (*sp == trans_values->red &&
+ *(sp + 1) == trans_values->green &&
+ *(sp + 2) == trans_values->blue)
{
*sp = (png_byte)background->red;
*(sp + 1) = (png_byte)background->green;
@@ -2924,9 +3162,9 @@ 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_color->red &&
- *(sp + 1) == trans_color->green &&
- *(sp + 2) == trans_color->blue)
+ if (*sp == trans_values->red &&
+ *(sp + 1) == trans_values->green &&
+ *(sp + 2) == trans_values->blue)
{
*sp = (png_byte)background->red;
*(sp + 1) = (png_byte)background->green;
@@ -2946,8 +3184,8 @@ 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_color->red && g == trans_color->green &&
- b == trans_color->blue)
+ if (r == trans_values->red && g == trans_values->green &&
+ b == trans_values->blue)
{
/* Background is already in screen gamma */
*sp = (png_byte)((background->red >> 8) & 0xff);
@@ -2981,8 +3219,8 @@ 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_color->red && g == trans_color->green &&
- b == trans_color->blue)
+ if (r == trans_values->red && g == trans_values->green &&
+ b == trans_values->blue)
{
*sp = (png_byte)((background->red >> 8) & 0xff);
*(sp + 1) = (png_byte)(background->red & 0xff);
@@ -3353,6 +3591,9 @@ 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)))
{
@@ -3529,7 +3770,7 @@ 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_alpha, int num_trans)
+ png_colorp palette, png_bytep trans, int num_trans)
{
int shift, value;
png_bytep sp, dp;
@@ -3539,6 +3780,9 @@ 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)
@@ -3621,7 +3865,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
{
case 8:
{
- if (trans_alpha != NULL)
+ if (trans != NULL)
{
sp = row + (png_size_t)row_width - 1;
dp = row + (png_size_t)(row_width << 2) - 1;
@@ -3631,7 +3875,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
if ((int)(*sp) >= num_trans)
*dp-- = 0xff;
else
- *dp-- = trans_alpha[*sp];
+ *dp-- = trans[*sp];
*dp-- = palette[*sp].blue;
*dp-- = palette[*sp].green;
*dp-- = palette[*sp].red;
@@ -3682,6 +3926,9 @@ 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)
{
@@ -3891,6 +4138,9 @@ 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)
@@ -3990,7 +4240,6 @@ static PNG_CONST int png_gamma_shift[] =
* AND
* {
* the screen_gamma is known
- *
* OR
*
* RGB_to_gray transformation is being performed
@@ -4236,6 +4485,9 @@ 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;
diff --git a/pngrutil.c b/pngrutil.c
index 6e15f1fd1..0e83884ac 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -14,20 +14,57 @@
* libpng itself during the course of reading an image.
*/
+#define PNG_INTERNAL
#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_USE_READ_MACROS
+#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
png_uint_32 PNGAPI
png_get_uint_32(png_bytep buf)
@@ -64,7 +101,7 @@ png_get_uint_16(png_bytep buf)
return (i);
}
-#endif /* PNG_USE_READ_MACROS */
+#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */
/* Read the chunk header (length + type name).
* Put the type name into png_ptr->chunk_name, and return the length.
@@ -150,8 +187,7 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip)
}
else
{
- png_chunk_benign_error(png_ptr, "CRC error");
- return (0);
+ png_chunk_error(png_ptr, "CRC error");
}
return (1);
}
@@ -274,7 +310,7 @@ 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);
@@ -286,16 +322,30 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_charp tmp;
tmp = text;
- text = (png_charp)png_malloc_warn(png_ptr,
- (png_size_t)(text_size +
- png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
+#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_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);
@@ -315,7 +365,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
if (ret != Z_STREAM_END)
{
-#ifdef PNG_STDIO_SUPPORTED
+#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char umsg[52];
if (ret == Z_BUF_ERROR)
@@ -346,7 +396,7 @@ 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);
}
@@ -362,7 +412,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
{
-#ifdef PNG_STDIO_SUPPORTED
+#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char umsg[50];
png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
@@ -555,7 +605,7 @@ 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_benign_error(png_ptr, "CRC error");
+ png_chunk_error(png_ptr, "CRC error");
}
else
{
@@ -1093,7 +1143,7 @@ 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;
}
@@ -1302,7 +1352,7 @@ 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_color.gray = png_get_uint_16(buf);
+ png_ptr->trans_values.gray = png_get_uint_16(buf);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
@@ -1316,9 +1366,9 @@ 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_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);
+ 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);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
@@ -1357,7 +1407,7 @@ 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_color));
+ &(png_ptr->trans_values));
}
#endif
@@ -1625,7 +1675,7 @@ 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;
@@ -1686,12 +1736,12 @@ 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_size_t)(nparams * png_sizeof(png_charp)));
+ (png_uint_32)(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;
}
@@ -1794,7 +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 width");
return;
}
- png_memcpy(swidth, ep, png_strlen(ep));
+ png_memcpy(swidth, ep, (png_size_t)png_strlen(ep));
#endif
#endif
@@ -1829,7 +1879,7 @@ 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_strlen(ep));
+ png_memcpy(sheight, ep, (png_size_t)png_strlen(ep));
#endif
#endif
@@ -1961,7 +2011,7 @@ 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;
@@ -1985,10 +2035,10 @@ 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_sizeof(png_text));
+ (png_uint_32)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;
@@ -2009,7 +2059,7 @@ 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
@@ -2064,7 +2114,7 @@ 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;
@@ -2105,10 +2155,10 @@ 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_sizeof(png_text));
+ (png_uint_32)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;
@@ -2129,7 +2179,7 @@ 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
@@ -2185,7 +2235,7 @@ 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;
@@ -2253,10 +2303,10 @@ 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_sizeof(png_text));
+ (png_uint_32)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;
@@ -2275,7 +2325,7 @@ 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
@@ -2310,7 +2360,9 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (png_ptr->mode & PNG_HAVE_IDAT)
{
- PNG_IDAT;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IDAT;
+#endif
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */
png_ptr->mode |= PNG_AFTER_IDAT;
}
@@ -3001,7 +3053,7 @@ png_read_finish_row(png_structp png_ptr)
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
- png_memset(png_ptr->prev_row, 0,
+ png_memset_check(png_ptr, png_ptr->prev_row, 0,
png_ptr->rowbytes + 1);
do
{
@@ -3036,7 +3088,9 @@ png_read_finish_row(png_structp png_ptr)
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
{
- PNG_IDAT;
+#ifdef PNG_USE_LOCAL_ARRAYS
+ PNG_CONST PNG_IDAT;
+#endif
char extra;
int ret;
@@ -3083,7 +3137,7 @@ 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;
@@ -3273,27 +3327,28 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (png_ptr->interlaced)
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, row_bytes + 64);
else
- png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
+ png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
png_ptr->row_buf = png_ptr->big_row_buf + 32;
png_ptr->old_big_row_buf_size = row_bytes + 64;
}
#ifdef PNG_MAX_MALLOC_64K
- if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
+ if ((png_uint_32)row_bytes + 1 > (png_uint_32)65536L)
png_error(png_ptr, "This image requires a row greater than 64KB");
#endif
- 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 ((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_ptr->rowbytes + 1 > png_ptr->old_prev_row_size)
+ if (row_bytes + 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)(
- png_ptr->rowbytes + 1));
- png_ptr->old_prev_row_size = png_ptr->rowbytes + 1;
+ 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_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
+ png_ptr->rowbytes = row_bytes;
png_debug1(3, "width = %lu,", png_ptr->width);
png_debug1(3, "height = %lu,", png_ptr->height);
diff --git a/pngset.c b/pngset.c
index c313b6ca2..2e6c6774c 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -16,9 +16,9 @@
* info struct and allows us to change the structure in the future.
*/
+#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-#include "pngpriv.h"
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
@@ -191,19 +191,21 @@ 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_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16));
+ (png_uint_32)(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;
}
@@ -212,7 +214,11 @@ 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
@@ -256,7 +262,7 @@ 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 = 0;
+ info_ptr->rowbytes = (png_size_t)0;
else
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
}
@@ -284,7 +290,7 @@ 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_size_t length;
+ png_uint_32 length;
int i;
png_debug1(1, "in %s storage function", "pCAL");
@@ -298,10 +304,10 @@ 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, length);
+ png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length);
png_debug(3, "storing X0, X1, type, and nparams in info");
info_ptr->pcal_X0 = X0;
@@ -315,16 +321,16 @@ 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, length);
+ png_memcpy(info_ptr->pcal_units, units, (png_size_t)length);
info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
- (png_size_t)((nparams + 1) * png_sizeof(png_charp)));
+ (png_uint_32)((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;
}
@@ -338,14 +344,16 @@ 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], length);
+ png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length);
}
info_ptr->valid |= PNG_INFO_pCAL;
+#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_PCAL;
+#endif
}
#endif
@@ -372,7 +380,7 @@ void PNGAPI
png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
int unit, png_charp swidth, png_charp sheight)
{
- png_size_t length;
+ png_uint_32 length;
png_debug1(1, "in %s storage function", "sCAL");
@@ -388,10 +396,10 @@ 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, length);
+ png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
length = png_strlen(sheight) + 1;
png_debug1(3, "allocating unit for info (%u bytes)",
@@ -402,12 +410,14 @@ 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, length);
+ png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
info_ptr->valid |= PNG_INFO_sCAL;
+#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_SCAL;
+#endif
}
#endif
#endif
@@ -456,7 +466,9 @@ 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
@@ -468,7 +480,11 @@ 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;
}
@@ -592,7 +608,7 @@ 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);
@@ -601,7 +617,7 @@ 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);
@@ -614,7 +630,9 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
/* Compression is always zero but is here so the API and info structure
* 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
@@ -635,6 +653,9 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
int num_text)
{
int i;
+#ifdef PNG_iTXt_SUPPORTED
+ int caller_no_itxt = 0;
+#endif
png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
png_ptr->chunk_name[0] == '\0') ?
@@ -643,6 +664,45 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
return(0);
+#ifdef PNG_iTXt_SUPPORTED
+ /* If an earlier version of the library was used to build the
+ * application, it might be using a png_textp structure that
+ * does not contain the lang or lang_key elements. Even if you build
+ * this library with PNG_iTXt_SUPPORTED explicitly defined,
+ * and your older library was also built with PNG_iTXt_SUPPORTED
+ * defined, the complete png_textp structure probably has not existed
+ * all along and it's not safe to access them, due to a bug in
+ * pngconf.h from version 1.2.9 to 1.2.40.
+ */
+ if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
+ {
+ int j;
+ png_byte c[12];
+
+ j = 0;
+ for (j = 0; j < 12; j++)
+ c[j] = 0;
+
+ for (j = 0; c[j] && j < 12; j++)
+ c[j] = png_ptr->user_png_ver[j];
+
+ if ((c[5] == '\0') /* 1.2.N */ ||
+ (c[5] == 'b') /* 1.2.NbetaNN */ ||
+ (c[5] == 'r') /* 1.2.NrcNN */ ||
+ (c[4] == '1') /* 1.2.1x */ ||
+ (c[4] == '2') /* 1.2.2x */ ||
+ (c[4] == '3') /* 1.2.3x */ ||
+ ((c[4] == '4') /* 1.2.4x */ &&
+ (((c[5] == '0')) /* 1.2.40 */ ||
+ ((c[5] == '1') /* 1.2.41x */ &&
+ (((c[6] == 'b') /* 1.2.41betax */ &&
+ ((c[10] == '0'))) /* 1.2.41beta0x */ ||
+ ((c[10] == '1') /* 1.2.41beta1x */ &&
+ (c[11] == '0'))))))) /* 1.2.41beta10 */
+ caller_no_itxt = 1;
+ }
+#endif /* PNG_iTXt_SUPPORTED */
+
/* Make sure we have enough space in the "text" array in info_struct
* to hold all of the incoming text_ptr objects.
*/
@@ -657,7 +717,7 @@ 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_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+ (png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
if (info_ptr->text == NULL)
{
png_free(png_ptr, old_text);
@@ -672,10 +732,12 @@ 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_size_t)(info_ptr->max_text * png_sizeof(png_text)));
+ (png_uint_32)(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);
@@ -696,10 +758,14 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
lang_len = 0;
lang_key_len = 0;
}
+
else
#ifdef PNG_iTXt_SUPPORTED
{
/* Set iTXt data */
+
+ if (caller_no_itxt == 0)
+ {
if (text_ptr[i].lang != NULL)
lang_len = png_strlen(text_ptr[i].lang);
else
@@ -708,10 +774,19 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
lang_key_len = png_strlen(text_ptr[i].lang_key);
else
lang_key_len = 0;
+ }
+
+ else /* Caller does not support iTXt */
+ {
+ lang_len = 0;
+ lang_key_len = 0;
+ png_warning(png_ptr,
+ "iTXt lang and lang_key not available from application");
+ }
}
-#else
+#else /* PNG_iTXt_SUPPORTED */
{
- png_warning(png_ptr, "iTXt chunk not supported");
+ png_warning(png_ptr, "iTXt chunk not supported.");
continue;
}
#endif
@@ -726,6 +801,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
#endif
textp->compression = PNG_TEXT_COMPRESSION_NONE;
}
+
else
{
text_length = png_strlen(text_ptr[i].text);
@@ -733,12 +809,12 @@ 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_size_t)
+ (png_uint_32)
(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",
- (unsigned long)(png_uint_32)
+ (png_uint_32)
(key_len + lang_len + lang_key_len + text_length + 4),
(int)textp->key);
@@ -777,6 +853,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
else
#endif
+
{
textp->text_length = text_length;
#ifdef PNG_iTXt_SUPPORTED
@@ -808,42 +885,43 @@ 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_alpha, int num_trans, png_color_16p trans_color)
+ png_bytep trans, int num_trans, png_color_16p trans_values)
{
png_debug1(1, "in %s storage function", "tRNS");
if (png_ptr == NULL || info_ptr == NULL)
return;
- if (trans_alpha != NULL)
+ if (trans != NULL)
{
- /*
- * It may not actually be necessary to set png_ptr->trans_alpha here;
+ /* It may not actually be necessary to set png_ptr->trans 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_alpha = info_ptr->trans_alpha = (png_bytep)png_malloc(png_ptr,
- (png_size_t)PNG_MAX_PALETTE_LENGTH);
+ png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)PNG_MAX_PALETTE_LENGTH);
if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
- png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
+ png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
}
- if (trans_color != NULL)
+ if (trans_values != NULL)
{
int sample_max = (1 << info_ptr->bit_depth);
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
- (int)trans_color->gray > sample_max) ||
+ (int)trans_values->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
- ((int)trans_color->red > sample_max ||
- (int)trans_color->green > sample_max ||
- (int)trans_color->blue > sample_max)))
+ ((int)trans_values->red > sample_max ||
+ (int)trans_values->green > sample_max ||
+ (int)trans_values->blue > sample_max)))
png_warning(png_ptr,
"tRNS chunk has out-of-range samples for bit_depth");
- png_memcpy(&(info_ptr->trans_color), trans_color,
+ png_memcpy(&(info_ptr->trans_values), trans_values,
png_sizeof(png_color_16));
if (num_trans == 0)
num_trans = 1;
@@ -853,7 +931,11 @@ 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
@@ -878,10 +960,10 @@ png_set_sPLT(png_structp png_ptr,
np = (png_sPLT_tp)png_malloc_warn(png_ptr,
(info_ptr->splt_palettes_num + nentries) *
- (png_size_t)png_sizeof(png_sPLT_t));
+ (png_uint_32)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;
}
@@ -897,7 +979,7 @@ 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, (png_size_t)length);
+ to->name = (png_charp)png_malloc_warn(png_ptr, length);
if (to->name == NULL)
{
png_warning(png_ptr,
@@ -906,7 +988,7 @@ 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_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
+ (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
if (to->entries == NULL)
{
png_warning(png_ptr,
@@ -924,7 +1006,9 @@ 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 */
@@ -940,18 +1024,19 @@ png_set_unknown_chunks(png_structp png_ptr,
return;
np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
- (png_size_t)((info_ptr->unknown_chunks_num + num_unknowns) *
+ (png_uint_32)((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;
}
png_memcpy(np, info_ptr->unknown_chunks,
info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
png_free(png_ptr, info_ptr->unknown_chunks);
+ info_ptr->unknown_chunks=NULL;
for (i = 0; i < num_unknowns; i++)
{
@@ -971,11 +1056,11 @@ png_set_unknown_chunks(png_structp png_ptr,
else
{
to->data = (png_bytep)png_malloc_warn(png_ptr,
- (png_size_t)from->size);
+ (png_uint_32)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
@@ -985,7 +1070,9 @@ 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,
@@ -997,6 +1084,25 @@ 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
@@ -1038,7 +1144,7 @@ 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_size_t)
+ (png_uint_32)
(5*(num_chunks + old_num_chunks)));
if (png_ptr->chunk_list != NULL)
{
@@ -1053,7 +1159,9 @@ 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
@@ -1092,12 +1200,12 @@ 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_size_t size)
+ png_uint_32 size)
{
if (png_ptr == NULL)
return;
png_free(png_ptr, png_ptr->zbuf);
- png_ptr->zbuf_size = size;
+ png_ptr->zbuf_size = (png_size_t)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;
@@ -1112,6 +1220,32 @@ 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 */
@@ -1128,7 +1262,7 @@ 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 */
+/* This function was added to libpng 1.2.41 */
void PNGAPI
png_set_chunk_cache_max (png_structp png_ptr,
png_uint_32 user_chunk_cache_max)
@@ -1156,4 +1290,5 @@ 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 */
diff --git a/pngtest.c b/pngtest.c
index 863fba56a..9f2d6a856 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -32,14 +32,34 @@
*/
#include "png.h"
-#include "pngpriv.h"
+#ifdef _WIN32_WCE
+# if _WIN32_WCE < 211
+ __error__ (f|w)printf functions are not supported on old WindowsCE.;
+# endif
+# include <windows.h>
+# include <stdlib.h>
+# define READFILE(file, data, length, check) \
+ if (ReadFile(file, data, length, &check, NULL)) check = 0
+# define WRITEFILE(file, data, length, check)) \
+ if (WriteFile(file, data, length, &check, NULL)) check = 0
+# define FCLOSE(file) CloseHandle(file)
+#else
# include <stdio.h>
# include <stdlib.h>
+# define READFILE(file, data, length, check) \
+ check=(png_size_t)fread(data, (png_size_t)1, length, file)
+# define WRITEFILE(file, data, length, check) \
+ check=(png_size_t)fwrite(data, (png_size_t)1, length, file)
# define FCLOSE(file) fclose(file)
+#endif
#ifndef PNG_STDIO_SUPPORTED
+# ifdef _WIN32_WCE
+ typedef HANDLE png_FILE_p;
+# else
typedef FILE * png_FILE_p;
+# endif
#endif
/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
@@ -98,8 +118,14 @@ static int status_dots_requested = 0;
static int status_dots = 1;
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
@@ -120,8 +146,14 @@ read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
}
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
@@ -137,8 +169,14 @@ write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
*/
static png_uint_32 filters_used[256];
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
if (png_ptr != NULL && row_info != NULL)
@@ -154,8 +192,14 @@ count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
static png_uint_32 zero_samples;
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
void
+#ifdef PNG_1_0_X
+PNGAPI
+#endif
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
png_bytep dp = data;
@@ -272,7 +316,7 @@ pngtest_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.
*/
- check = fread(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+ READFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
if (check != length)
{
@@ -291,7 +335,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
static void
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_size_t check;
+ int check;
png_byte *n_data;
png_FILE_p io_ptr;
@@ -300,7 +344,7 @@ pngtest_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)
{
- check = fread(n_data, 1, length, io_ptr);
+ READFILE(io_ptr, n_data, length, check);
}
else
{
@@ -311,7 +355,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
- err = fread(buf, 1, 1, io_ptr);
+ READFILE(io_ptr, buf, 1, err);
png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
if (err != read)
break;
@@ -345,9 +389,9 @@ pngtest_flush(png_structp png_ptr)
static void
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_size_t check;
+ png_uint_32 check;
- check = fwrite(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+ WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
if (check != length)
{
png_error(png_ptr, "Write Error");
@@ -365,7 +409,7 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
static void
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_size_t check;
+ png_uint_32 check;
png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
png_FILE_p io_ptr;
@@ -374,7 +418,7 @@ pngtest_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)
{
- check = fwrite(near_data, 1, length, io_ptr);
+ WRITEFILE(io_ptr, near_data, length, check);
}
else
{
@@ -386,7 +430,7 @@ pngtest_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 */
- err = fwrite(buf, 1, written, io_ptr);
+ WRITEFILE(io_ptr, buf, written, err);
if (err != written)
break;
else
@@ -447,7 +491,7 @@ pngtest_error(png_structp png_ptr, png_const_charp message)
*/
typedef struct memory_information
{
- png_alloc_size_t size;
+ png_uint_32 size;
png_voidp pointer;
struct memory_information FAR *next;
} memory_information;
@@ -459,12 +503,11 @@ static int maximum_allocation = 0;
static int total_allocation = 0;
static int num_allocations = 0;
-png_voidp png_debug_malloc
- PNGARG((png_structp png_ptr, png_alloc_size_t size));
+png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size));
void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
png_voidp
-png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
+png_debug_malloc(png_structp png_ptr, png_uint_32 size)
{
/* png_malloc has already tested for NULL; png_create_struct calls
@@ -481,23 +524,24 @@ png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
memory_infop pinfo;
png_set_mem_fn(png_ptr, NULL, NULL, NULL);
pinfo = (memory_infop)png_malloc(png_ptr,
- png_sizeof(*pinfo));
+ (png_uint_32)png_sizeof(*pinfo));
pinfo->size = size;
current_allocation += size;
total_allocation += size;
num_allocations ++;
if (current_allocation > maximum_allocation)
maximum_allocation = current_allocation;
- pinfo->pointer = png_malloc(png_ptr, size);
+ pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
/* Restore malloc_fn and free_fn */
png_set_mem_fn(png_ptr,
- NULL, png_debug_malloc, png_debug_free);
+ png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
+ (png_free_ptr)png_debug_free);
if (size != 0 && pinfo->pointer == NULL)
{
current_allocation -= size;
total_allocation -= size;
png_error(png_ptr,
- "out of memory in pngtest->png_debug_malloc");
+ "out of memory in pngtest->png_debug_malloc.");
}
pinfo->next = pinformation;
pinformation = pinfo;
@@ -657,17 +701,30 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#endif
+#ifdef _WIN32_WCE
+ TCHAR path[MAX_PATH];
+#endif
char inbuf[256], outbuf[256];
row_buf = NULL;
+#ifdef _WIN32_WCE
+ MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
+ if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+#else
if ((fpin = fopen(inname, "rb")) == NULL)
+#endif
{
fprintf(STDERR, "Could not find input file %s\n", inname);
return (1);
}
+#ifdef _WIN32_WCE
+ MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
+ if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
+#else
if ((fpout = fopen(outname, "wb")) == NULL)
+#endif
{
fprintf(STDERR, "Could not open output file %s\n", outname);
FCLOSE(fpin);
@@ -677,12 +734,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_debug(0, "Allocating read and write structures");
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
read_ptr =
- png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL,
+ png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+ png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
(png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
#else
read_ptr =
- png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+ png_error_ptr_NULL, png_error_ptr_NULL);
#endif
#ifndef PNG_STDIO_SUPPORTED
png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
@@ -701,11 +759,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef PNG_WRITE_SUPPORTED
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
write_ptr =
- png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL, png_debug_malloc, png_debug_free);
+ png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+ png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
+ (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
#else
write_ptr =
- png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
+ png_error_ptr_NULL, png_error_ptr_NULL);
#endif
#ifndef PNG_STDIO_SUPPORTED
png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
@@ -795,9 +855,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
else
{
#ifdef PNG_WRITE_SUPPORTED
- png_set_write_status_fn(write_ptr, NULL);
+ png_set_write_status_fn(write_ptr, png_write_status_ptr_NULL);
#endif
- png_set_read_status_fn(read_ptr, NULL);
+ png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL);
}
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
@@ -818,14 +878,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
# define PNG_HANDLE_CHUNK_ALWAYS 3
# endif
png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
- NULL, 0);
+ png_bytep_NULL, 0);
#endif
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
# ifndef PNG_HANDLE_CHUNK_IF_SAFE
# define PNG_HANDLE_CHUNK_IF_SAFE 2
# endif
png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
- NULL, 0);
+ png_bytep_NULL, 0);
#endif
png_debug(0, "Reading info struct");
@@ -1045,23 +1105,23 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#ifdef PNG_tRNS_SUPPORTED
{
- png_bytep trans_alpha;
+ png_bytep trans;
int num_trans;
- png_color_16p trans_color;
+ png_color_16p trans_values;
- if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
- &trans_color))
+ if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
+ &trans_values))
{
int sample_max = (1 << read_info_ptr->bit_depth);
/* libpng doesn't reject a tRNS chunk with out-of-range samples */
if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
- (int)trans_color->gray > sample_max) ||
+ (int)trans_values->gray > sample_max) ||
(read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
- ((int)trans_color->red > sample_max ||
- (int)trans_color->green > sample_max ||
- (int)trans_color->blue > sample_max))))
- png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
- trans_color);
+ ((int)trans_values->red > sample_max ||
+ (int)trans_values->green > sample_max ||
+ (int)trans_values->blue > sample_max))))
+ png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
+ trans_values);
}
}
#endif
@@ -1164,7 +1224,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
png_get_rowbytes(read_ptr, read_info_ptr));
#endif /* !SINGLE_ROWBUF_ALLOC */
- png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
+ png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNGTEST_TIMING
@@ -1286,13 +1346,23 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
FCLOSE(fpout);
png_debug(0, "Opening files for comparison");
+#ifdef _WIN32_WCE
+ MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
+ if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+#else
if ((fpin = fopen(inname, "rb")) == NULL)
+#endif
{
fprintf(STDERR, "Could not find file %s\n", inname);
return (1);
}
+#ifdef _WIN32_WCE
+ MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
+ if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+#else
if ((fpout = fopen(outname, "rb")) == NULL)
+#endif
{
fprintf(STDERR, "Could not find file %s\n", outname);
FCLOSE(fpin);
@@ -1303,8 +1373,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
png_size_t num_in, num_out;
- num_in = fread(inbuf, 1, 1, fpin);
- num_out = fread(outbuf, 1, 1, fpout);
+ READFILE(fpin, inbuf, 1, num_in);
+ READFILE(fpout, outbuf, 1, num_out);
if (num_in != num_out)
{
@@ -1619,4 +1689,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0rc01 your_png_h_is_not_version_1_4_0rc01;
+typedef version_1_2_41beta14 your_png_h_is_not_version_1_2_41beta14;
diff --git a/pngtrans.c b/pngtrans.c
index 470c1e915..5ef2a5396 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -11,9 +11,9 @@
* and license in png.h
*/
+#define PNG_INTERNAL
#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 */
@@ -117,7 +117,11 @@ 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
@@ -142,6 +146,7 @@ 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)
@@ -153,6 +158,7 @@ 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
@@ -202,6 +208,10 @@ 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;
@@ -252,6 +262,9 @@ 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;
@@ -381,6 +394,9 @@ 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;
@@ -410,6 +426,9 @@ 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;
@@ -567,6 +586,9 @@ 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;
@@ -635,6 +657,7 @@ 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
diff --git a/pngwio.c b/pngwio.c
index 7fdca230d..f949f733f 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -18,9 +18,9 @@
* them at run time with png_set_write_fn(...).
*/
+#define PNG_INTERNAL
#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
@@ -52,7 +52,12 @@ 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");
}
@@ -79,7 +84,12 @@ 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
{
@@ -91,7 +101,12 @@ 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;
@@ -126,11 +141,15 @@ 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
@@ -202,7 +221,7 @@ 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.");
}
}
diff --git a/pngwrite.c b/pngwrite.c
index a4e7e532a..66f585596 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -12,9 +12,9 @@
*/
/* Get internal access to png.h */
+#define PNG_INTERNAL
#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,
@@ -159,10 +159,10 @@ 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_alpha[j] = (png_byte)(255 - info_ptr->trans_alpha[j]);
+ info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
}
#endif
- png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
+ png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values),
info_ptr->num_trans, info_ptr->color_type);
}
#endif
@@ -200,7 +200,7 @@ 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 */
@@ -412,16 +412,19 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
/* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
* and restored again in libpng-1.2.30, may cause some applications that
* do not set png_ptr->output_flush_fn to crash. If your application
- * experiences a problem, please report the event to
- * png-mng-implement at lists.sf.net .
+ * experiences a problem, please try building libpng with
+ * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
+ * png-mng-implement at lists.sf.net . This kludge will be removed
+ * from libpng-1.4.0.
*/
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#if defined(PNG_WRITE_FLUSH_SUPPORTED) && \
+ defined(PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED)
png_flush(png_ptr);
#endif
}
-#ifdef PNG_WRITE_tIME_SUPPORTED
-/* "time.h" functions are not supported on WindowsCE */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+/* "tm" structure is not supported on WindowsCE */
void PNGAPI
png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
{
@@ -447,7 +450,6 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
}
#endif
-
/* Initialize png_ptr structure, and allocate any memory needed */
png_structp PNGAPI
png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
@@ -455,7 +457,7 @@ 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, NULL, NULL, NULL));
+ warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
}
/* Alternate initialize png_ptr structure, and allocate any memory needed */
@@ -465,7 +467,6 @@ 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 */
- int png_cleanup_needed = 0;
#ifdef PNG_SETJMP_SUPPORTED
volatile
#endif
@@ -495,15 +496,25 @@ 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))
#endif
- PNG_ABORT();
+ {
+ 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));
+#endif
#endif
#ifdef PNG_USER_MEM_SUPPORTED
@@ -523,6 +534,10 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
{
+#ifdef PNG_iTXt_SUPPORTED
+ png_size_t length;
+#endif
+
/* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
* we must recompile any applications that use any older library version.
* For versions after libpng 1.0, we will be compatible, so we need
@@ -549,46 +564,190 @@ 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_warning(png_ptr,
+ png_error(png_ptr,
"Incompatible libpng version in application and library");
- png_cleanup_needed = 1;
}
+#ifdef PNG_iTXt_SUPPORTED
+
+ /* Any library mismatch is trouble for png_set_read() in
+ * libpng-1.2.41 and later 1.2.x, so we store the caller's
+ * library version string.
+ */
+
+ length = (png_size_t)png_strlen(user_png_ver) + 1;
+ png_debug1(3, "allocating user_png_ver for png_ptr (%lu bytes)",
+ (unsigned long)length);
+ png_ptr->user_png_ver = (png_charp)png_malloc_warn(png_ptr,
+ (png_uint_32)length);
+
+ if (png_ptr->user_png_ver == NULL)
+ png_warning(png_ptr, "Could not store png_ptr->user_png_ver");
+
+ else
+ png_memcpy(png_ptr->user_png_ver, user_png_ver, length);
+
+#endif /* PNG_iTXt_SUPPORTED */
+
}
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
- if (!png_cleanup_needed)
+ png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
+ (png_uint_32)png_ptr->zbuf_size);
+
+ png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
+ png_flush_ptr_NULL);
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
+ 1, png_doublep_NULL, png_doublep_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)
{
- png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr,
- png_ptr->zbuf_size);
- if (png_ptr->zbuf == NULL)
- png_cleanup_needed = 1;
+ 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);
}
- if (png_cleanup_needed)
+#endif
+ if (png_sizeof(png_struct) > png_struct_size)
{
- /* 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);
+ 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_destroy_struct((png_voidp)png_ptr);
+ png_ptr->warning_fn = NULL;
+ png_warning(png_ptr,
+ "Application uses deprecated png_write_init() and should be recompiled.");
#endif
- return (NULL);
+ }
+ } 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;
}
- png_set_write_fn(png_ptr, NULL, NULL, NULL);
+ /* 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, NULL, NULL);
+ 1, png_doublep_NULL, png_doublep_NULL);
#endif
-
- return (png_ptr);
}
-
/* 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
* have called png_set_interlace_handling(), you will have to
@@ -663,36 +822,36 @@ 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);
@@ -776,7 +935,8 @@ 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(png_ptr->row_buf + 1, row, png_ptr->row_info.rowbytes);
+ png_memcpy_check(png_ptr, png_ptr->row_buf + 1, row,
+ png_ptr->row_info.rowbytes);
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Handle interlacing */
@@ -934,6 +1094,7 @@ 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
@@ -1016,6 +1177,11 @@ png_write_destroy(png_structp png_ptr)
free_fn = png_ptr->free_fn;
#endif
+/* New member added in libpng-1.2.41, will be removed from 1.4.0 */
+#ifdef PNG_iTXt_SUPPORTED
+ png_free(png_ptr, png_ptr->user_png_ver);
+#endif
+
png_memset(png_ptr, 0, png_sizeof(png_struct));
png_ptr->error_fn = error_fn;
@@ -1432,12 +1598,6 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
png_set_invert_alpha(png_ptr);
#endif
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
- /* Invert the alpha channel from opacity to transparency */
- if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
- png_set_invert_alpha(png_ptr);
-#endif
-
/* ----------------------- end of transformations ------------------- */
/* Write the bits */
diff --git a/pngwtran.c b/pngwtran.c
index 88ca5df1c..05048c009 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -11,9 +11,9 @@
* and license in png.h
*/
+#define PNG_INTERNAL
#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.
@@ -92,6 +92,9 @@ 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)
@@ -215,7 +218,11 @@ 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];
@@ -336,6 +343,9 @@ 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)
{
@@ -422,6 +432,9 @@ 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)
{
@@ -511,6 +524,9 @@ 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;
diff --git a/pngwutil.c b/pngwutil.c
index f0db36f84..741123ac6 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
- * Last changed in libpng 1.4.0 [October 21, 2009]
+ * Last changed in libpng 1.2.41 [November 3, 2009]
* Copyright (c) 1998-2009 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.)
@@ -11,9 +11,9 @@
* and license in png.h
*/
+#define PNG_INTERNAL
#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
@@ -28,7 +28,6 @@ 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.
@@ -41,7 +40,6 @@ 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,
@@ -128,7 +126,7 @@ 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, 4);
+ png_calculate_crc(png_ptr, chunk_name, (png_size_t)4);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be written.
@@ -220,7 +218,7 @@ png_text_compress(png_structp png_ptr,
if (compression >= PNG_TEXT_COMPRESSION_LAST)
{
-#ifdef PNG_STDIO_SUPPORTED
+#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[50];
png_snprintf(msg, 50, "Unknown compression type %d", compression);
png_warning(png_ptr, msg);
@@ -279,7 +277,7 @@ png_text_compress(png_structp png_ptr,
old_ptr = comp->output_ptr;
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)
+ (png_uint_32)
(comp->max_output_ptr * png_sizeof(png_charpp)));
png_memcpy(comp->output_ptr, old_ptr, old_max
* png_sizeof(png_charp));
@@ -287,14 +285,14 @@ png_text_compress(png_structp png_ptr,
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)
+ (png_uint_32)
(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_alloc_size_t)png_ptr->zbuf_size);
+ (png_uint_32)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@@ -331,7 +329,7 @@ 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_alloc_size_t)(comp->max_output_ptr *
+ (png_uint_32)(comp->max_output_ptr *
png_sizeof(png_charp)));
png_memcpy(comp->output_ptr, old_ptr,
old_max * png_sizeof(png_charp));
@@ -339,14 +337,14 @@ png_text_compress(png_structp png_ptr,
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_alloc_size_t)(comp->max_output_ptr *
+ (png_uint_32)(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_alloc_size_t)png_ptr->zbuf_size);
+ (png_uint_32)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@@ -394,9 +392,11 @@ 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,
@@ -417,7 +417,9 @@ 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 */
@@ -593,7 +595,9 @@ 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];
@@ -656,7 +660,9 @@ 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");
@@ -709,11 +715,13 @@ 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, NULL,
+ png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL,
(png_size_t)0);
png_ptr->mode |= PNG_HAVE_IEND;
}
@@ -724,7 +732,9 @@ 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];
@@ -740,7 +750,9 @@ 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");
@@ -757,7 +769,9 @@ 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");
@@ -776,7 +790,9 @@ 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;
@@ -854,12 +870,14 @@ 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];
- png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
- png_size_t palette_size = entry_size * spalette->nentries;
+ int entry_size = (spalette->depth == 8 ? 6 : 10);
+ int palette_size = entry_size * spalette->nentries;
png_sPLT_entryp ep;
#ifndef PNG_POINTER_INDEXING_SUPPORTED
int i;
@@ -933,7 +951,9 @@ 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;
@@ -991,7 +1011,9 @@ 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,
@@ -1038,7 +1060,9 @@ 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");
@@ -1070,10 +1094,12 @@ 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_alpha, png_color_16p tran,
+png_write_tRNS(png_structp png_ptr, png_bytep trans, 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");
@@ -1086,7 +1112,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
return;
}
/* Write the chunk out as it is */
- png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
+ png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans,
(png_size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
@@ -1127,7 +1153,9 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, 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");
@@ -1179,7 +1207,9 @@ 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];
@@ -1249,7 +1279,7 @@ 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))
{
-#ifdef PNG_STDIO_SUPPORTED
+#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[40];
png_snprintf(msg, 40,
@@ -1321,6 +1351,7 @@ 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");
}
@@ -1341,7 +1372,9 @@ 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;
@@ -1380,7 +1413,9 @@ 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;
@@ -1438,7 +1473,9 @@ 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;
@@ -1525,7 +1562,9 @@ 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");
@@ -1546,7 +1585,9 @@ 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];
@@ -1565,7 +1606,7 @@ 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_alloc_size_t)(nparams * png_sizeof(png_uint_32)));
+ (png_uint_32)(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. */
@@ -1607,17 +1648,36 @@ 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);
@@ -1628,7 +1688,9 @@ 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;
@@ -1661,7 +1723,9 @@ 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");
@@ -1684,7 +1748,9 @@ 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");
@@ -1737,7 +1803,7 @@ png_write_start_row(png_structp png_ptr)
/* Set up row buffer */
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
- (png_alloc_size_t)buf_size);
+ (png_uint_32)buf_size);
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
#ifdef PNG_WRITE_FILTER_SUPPORTED
@@ -1745,35 +1811,35 @@ 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_alloc_size_t)(png_ptr->rowbytes + 1));
+ (png_uint_32)(png_ptr->rowbytes + 1));
png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
}
/* We only need to keep the previous row if we are using one of these. */
if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
{
- /* Set up previous row buffer */
- png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
- (png_alloc_size_t)buf_size);
+ /* Set up previous row buffer */
+ png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
+ (png_uint_32)buf_size);
if (png_ptr->do_filter & PNG_FILTER_UP)
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- (png_size_t)(png_ptr->rowbytes + 1));
+ (png_uint_32)(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_alloc_size_t)(png_ptr->rowbytes + 1));
+ (png_uint_32)(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_size_t)(png_ptr->rowbytes + 1));
+ (png_uint_32)(png_ptr->rowbytes + 1));
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
@@ -1939,7 +2005,11 @@ 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)
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