[libpng16] Add 'const' to png_structrp arguments of png_set_*() APIs.

Because these APIs store to the png_info they can take a
 png_const_structrp now that the error routines also accept
 one of these.
This commit is contained in:
John Bowler 2011-12-28 08:43:37 -06:00 committed by Glenn Randers-Pehrson
parent f87ef8bcb5
commit 4f67e40898
7 changed files with 140 additions and 138 deletions

12
png.c
View File

@ -762,13 +762,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.6.0beta04 - December 24, 2011" PNG_STRING_NEWLINE \
"libpng version 1.6.0beta04 - December 28, 2011" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
return "libpng version 1.6.0beta04 - December 24, 2011\
return "libpng version 1.6.0beta04 - December 28, 2011\
Copyright (c) 1998-2011 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -884,7 +884,7 @@ png_access_version_number(void)
# ifdef PNG_CHECK_cHRM_SUPPORTED
int /* PRIVATE */
png_check_cHRM_fixed(png_structrp png_ptr,
png_check_cHRM_fixed(png_const_structrp png_ptr,
png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
png_fixed_point blue_x, png_fixed_point blue_y)
@ -1608,7 +1608,7 @@ png_pow10(int power)
* precision.
*/
void /* PRIVATE */
png_ascii_from_fp(png_structrp png_ptr, png_charp ascii, png_size_t size,
png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
double fp, unsigned int precision)
{
/* We use standard functions from math.h, but not printf because
@ -1922,8 +1922,8 @@ png_ascii_from_fp(png_structrp png_ptr, png_charp ascii, png_size_t size,
/* Function to format a fixed point value in ASCII.
*/
void /* PRIVATE */
png_ascii_from_fixed(png_structrp png_ptr, png_charp ascii, png_size_t size,
png_fixed_point fp)
png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
png_size_t size, png_fixed_point fp)
{
/* Require space for 10 decimal digits, a decimal point, a minus sign and a
* trailing \0, 13 characters:

114
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.0beta04 - December 24, 2011
* libpng version 1.6.0beta04 - December 28, 2011
* Copyright (c) 1998-2011 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 +11,7 @@
* 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 1.6.0beta04 - December 24, 2011: Glenn
* libpng versions 0.97, January 1998, through 1.6.0beta04 - December 28, 2011: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -198,7 +198,7 @@
*
* This code is released under the libpng license.
*
* libpng versions 1.2.6, August 15, 2004, through 1.6.0beta04, December 24, 2011, are
* libpng versions 1.2.6, August 15, 2004, through 1.6.0beta04, December 28, 2011, are
* Copyright (c) 2004, 2006-2011 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:
@ -310,7 +310,7 @@
* Y2K compliance in libpng:
* =========================
*
* December 24, 2011
* December 28, 2011
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
@ -376,7 +376,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.0beta04"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.0beta04 - December 24, 2011\n"
" libpng version 1.6.0beta04 - December 28, 2011\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
@ -2000,8 +2000,8 @@ PNG_EXPORT(112, png_bytepp, png_get_rows, (png_const_structrp png_ptr,
/* Set row_pointers, which is an array of pointers to scanlines for use
* by png_write_png().
*/
PNG_EXPORT(113, void, png_set_rows, (png_structrp png_ptr, png_inforp info_ptr,
png_bytepp row_pointers));
PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr,
png_inforp info_ptr, png_bytepp row_pointers));
#endif
/* Returns number of color channels in image. */
@ -2065,7 +2065,7 @@ PNG_EXPORT(129, png_int_32, png_get_y_offset_microns,
/* Returns pointer to signature string read from PNG header */
PNG_EXPORT(130, png_const_bytep, png_get_signature, (png_const_structrp png_ptr,
png_inforp info_ptr));
png_const_inforp info_ptr));
#ifdef PNG_bKGD_SUPPORTED
PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr,
@ -2073,8 +2073,8 @@ PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr,
#endif
#ifdef PNG_bKGD_SUPPORTED
PNG_EXPORT(132, void, png_set_bKGD, (png_structrp png_ptr, png_inforp info_ptr,
png_const_color_16p background));
PNG_EXPORT(132, void, png_set_bKGD, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_color_16p background));
#endif
#ifdef PNG_cHRM_SUPPORTED
@ -2104,20 +2104,21 @@ PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
#endif
#ifdef PNG_cHRM_SUPPORTED
PNG_FP_EXPORT(135, void, png_set_cHRM, (png_structrp png_ptr, png_inforp info_ptr,
PNG_FP_EXPORT(135, void, png_set_cHRM, (png_const_structrp png_ptr,
png_inforp info_ptr,
double white_x, double white_y, double red_x, double red_y, double green_x,
double green_y, double blue_x, double blue_y));
PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_structrp png_ptr,
PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_const_structrp png_ptr,
png_inforp info_ptr, double red_X, double red_Y, double red_Z,
double green_X, double green_Y, double green_Z, double blue_X,
double blue_Y, double blue_Z));
PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_structrp png_ptr,
PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_const_structrp png_ptr,
png_inforp info_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));
PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_structrp png_ptr,
PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr,
png_inforp info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
png_fixed_point int_red_Z, png_fixed_point int_green_X,
png_fixed_point int_green_Y, png_fixed_point int_green_Z,
@ -2134,9 +2135,9 @@ PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
#endif
#ifdef PNG_gAMA_SUPPORTED
PNG_FP_EXPORT(139, void, png_set_gAMA, (png_structrp png_ptr,
PNG_FP_EXPORT(139, void, png_set_gAMA, (png_const_structrp png_ptr,
png_inforp info_ptr, double file_gamma));
PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_structrp png_ptr,
PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr,
png_inforp info_ptr, png_fixed_point int_file_gamma));
#endif
@ -2146,18 +2147,19 @@ PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr,
#endif
#ifdef PNG_hIST_SUPPORTED
PNG_EXPORT(142, void, png_set_hIST, (png_structrp png_ptr, png_inforp info_ptr,
png_const_uint_16p hist));
PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_uint_16p hist));
#endif
PNG_EXPORT(143, png_uint_32, png_get_IHDR, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_32 *width, png_uint_32 *height,
png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height,
int *bit_depth, int *color_type, int *interlace_method,
int *compression_method, int *filter_method));
PNG_EXPORT(144, void, png_set_IHDR, (png_structrp png_ptr, png_inforp info_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth, int color_type,
int interlace_method, int compression_method, int filter_method));
PNG_EXPORT(144, void, png_set_IHDR, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_method, int compression_method,
int filter_method));
#ifdef PNG_oFFs_SUPPORTED
PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr,
@ -2166,8 +2168,9 @@ PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr,
#endif
#ifdef PNG_oFFs_SUPPORTED
PNG_EXPORT(146, void, png_set_oFFs, (png_structrp png_ptr, png_inforp info_ptr,
png_int_32 offset_x, png_int_32 offset_y, int unit_type));
PNG_EXPORT(146, void, png_set_oFFs, (png_const_structrp png_ptr,
png_inforp info_ptr, png_int_32 offset_x, png_int_32 offset_y,
int unit_type));
#endif
#ifdef PNG_pCAL_SUPPORTED
@ -2178,9 +2181,9 @@ PNG_EXPORT(147, png_uint_32, png_get_pCAL, (png_const_structrp png_ptr,
#endif
#ifdef PNG_pCAL_SUPPORTED
PNG_EXPORT(148, void, png_set_pCAL, (png_structrp png_ptr, png_inforp info_ptr,
png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
int nparams, png_const_charp units, png_charpp params));
PNG_EXPORT(148, void, png_set_pCAL, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_charp purpose, png_int_32 X0, png_int_32 X1,
int type, int nparams, png_const_charp units, png_charpp params));
#endif
#ifdef PNG_pHYs_SUPPORTED
@ -2190,15 +2193,15 @@ PNG_EXPORT(149, png_uint_32, png_get_pHYs, (png_const_structrp png_ptr,
#endif
#ifdef PNG_pHYs_SUPPORTED
PNG_EXPORT(150, void, png_set_pHYs, (png_structrp png_ptr, png_inforp info_ptr,
png_uint_32 res_x, png_uint_32 res_y, int unit_type));
PNG_EXPORT(150, void, png_set_pHYs, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
#endif
PNG_EXPORT(151, png_uint_32, png_get_PLTE, (png_const_structrp png_ptr,
png_const_inforp info_ptr, png_colorp *palette, int *num_palette));
PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr, png_inforp info_ptr,
png_const_colorp palette, int num_palette));
PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr,
png_inforp info_ptr, png_const_colorp palette, int num_palette));
#ifdef PNG_sBIT_SUPPORTED
PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr,
@ -2206,8 +2209,8 @@ PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr,
#endif
#ifdef PNG_sBIT_SUPPORTED
PNG_EXPORT(154, void, png_set_sBIT, (png_structrp png_ptr, png_inforp info_ptr,
png_const_color_8p sig_bit));
PNG_EXPORT(154, void, png_set_sBIT, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_color_8p sig_bit));
#endif
#ifdef PNG_sRGB_SUPPORTED
@ -2216,9 +2219,9 @@ PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structrp png_ptr,
#endif
#ifdef PNG_sRGB_SUPPORTED
PNG_EXPORT(156, void, png_set_sRGB, (png_structrp png_ptr, png_inforp info_ptr,
int srgb_intent));
PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_structrp png_ptr,
PNG_EXPORT(156, void, png_set_sRGB, (png_const_structrp png_ptr,
png_inforp info_ptr, int srgb_intent));
PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_const_structrp png_ptr,
png_inforp info_ptr, int srgb_intent));
#endif
@ -2229,9 +2232,9 @@ PNG_EXPORT(158, png_uint_32, png_get_iCCP, (png_const_structrp png_ptr,
#endif
#ifdef PNG_iCCP_SUPPORTED
PNG_EXPORT(159, void, png_set_iCCP, (png_structrp png_ptr, png_inforp info_ptr,
png_const_charp name, int compression_type, png_const_bytep profile,
png_uint_32 proflen));
PNG_EXPORT(159, void, png_set_iCCP, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_charp name, int compression_type,
png_const_bytep profile, png_uint_32 proflen));
#endif
#ifdef PNG_sPLT_SUPPORTED
@ -2240,8 +2243,8 @@ PNG_EXPORT(160, png_uint_32, png_get_sPLT, (png_const_structrp png_ptr,
#endif
#ifdef PNG_sPLT_SUPPORTED
PNG_EXPORT(161, void, png_set_sPLT, (png_structrp png_ptr, png_inforp info_ptr,
png_const_sPLT_tp entries, int nentries));
PNG_EXPORT(161, void, png_set_sPLT, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_sPLT_tp entries, int nentries));
#endif
#ifdef PNG_TEXT_SUPPORTED
@ -2258,8 +2261,8 @@ PNG_EXPORT(162, png_uint_32, png_get_text, (png_const_structrp png_ptr,
*/
#ifdef PNG_TEXT_SUPPORTED
PNG_EXPORT(163, void, png_set_text, (png_structrp png_ptr, png_inforp info_ptr,
png_const_textp text_ptr, int num_text));
PNG_EXPORT(163, void, png_set_text, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_textp text_ptr, int num_text));
#endif
#ifdef PNG_tIME_SUPPORTED
@ -2268,8 +2271,8 @@ PNG_EXPORT(164, png_uint_32, png_get_tIME, (png_const_structrp png_ptr,
#endif
#ifdef PNG_tIME_SUPPORTED
PNG_EXPORT(165, void, png_set_tIME, (png_structrp png_ptr, png_inforp info_ptr,
png_const_timep mod_time));
PNG_EXPORT(165, void, png_set_tIME, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_timep mod_time));
#endif
#ifdef PNG_tRNS_SUPPORTED
@ -2279,8 +2282,8 @@ PNG_EXPORT(166, png_uint_32, png_get_tRNS, (png_const_structrp png_ptr,
#endif
#ifdef PNG_tRNS_SUPPORTED
PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr, png_inforp info_ptr,
png_const_bytep trans_alpha, int num_trans,
PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr,
png_inforp info_ptr, png_const_bytep trans_alpha, int num_trans,
png_const_color_16p trans_color));
#endif
@ -2302,13 +2305,14 @@ PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
(png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit,
png_charpp swidth, png_charpp sheight));
PNG_FP_EXPORT(170, void, png_set_sCAL, (png_structrp png_ptr, png_inforp info_ptr,
int unit, double width, double height));
PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_structrp png_ptr,
PNG_FP_EXPORT(170, void, png_set_sCAL, (png_const_structrp png_ptr,
png_inforp info_ptr, int unit, double width, double height));
PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_const_structrp png_ptr,
png_inforp info_ptr, int unit, png_fixed_point width,
png_fixed_point height));
PNG_EXPORT(171, void, png_set_sCAL_s, (png_structrp png_ptr, png_inforp info_ptr,
int unit, png_const_charp swidth, png_const_charp sheight));
PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr,
png_inforp info_ptr, int unit,
png_const_charp swidth, png_const_charp sheight));
#endif /* PNG_sCAL_SUPPORTED */
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
@ -2333,11 +2337,11 @@ PNG_EXPORT(173, int, png_handle_as_unknown, (png_structrp png_ptr,
png_const_bytep chunk_name));
#endif
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
PNG_EXPORT(174, void, png_set_unknown_chunks, (png_structrp png_ptr,
PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_unknown_chunkp unknowns,
int num_unknowns));
PNG_EXPORT(175, void, png_set_unknown_chunk_location, (png_structrp png_ptr,
png_inforp info_ptr, int chunk, int location));
PNG_EXPORT(175, void, png_set_unknown_chunk_location,
(png_const_structrp png_ptr, png_inforp info_ptr, int chunk, int location));
PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structrp png_ptr,
png_const_inforp info_ptr, png_unknown_chunkpp entries));
#endif

View File

@ -432,7 +432,7 @@ png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
}
png_const_bytep PNGAPI
png_get_signature(png_const_structrp png_ptr, png_inforp info_ptr)
png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->signature);
@ -733,7 +733,7 @@ png_get_hIST(png_const_structrp png_ptr, png_const_inforp info_ptr,
#endif
png_uint_32 PNGAPI
png_get_IHDR(png_const_structrp png_ptr, png_inforp info_ptr,
png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 *width, png_uint_32 *height, int *bit_depth,
int *color_type, int *interlace_type, int *compression_type,
int *filter_type)
@ -975,7 +975,8 @@ png_get_text(png_const_structrp png_ptr, png_const_inforp info_ptr,
#ifdef PNG_tIME_SUPPORTED
png_uint_32 PNGAPI
png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr, png_timep *mod_time)
png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
png_timep *mod_time)
{
png_debug1(1, "in %s retrieval function", "tIME");

View File

@ -874,7 +874,7 @@ PNG_EXTERN void png_write_iTXt PNGARG((png_structrp png_ptr,
#endif
#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
PNG_EXTERN int png_set_text_2 PNGARG((png_structrp png_ptr,
PNG_EXTERN int png_set_text_2 PNGARG((png_const_structrp png_ptr,
png_inforp info_ptr, png_const_textp text_ptr, int num_text));
#endif
@ -1316,7 +1316,7 @@ PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
/* Added at libpng version 1.4.0 */
#ifdef PNG_CHECK_cHRM_SUPPORTED
PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structrp png_ptr,
PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_const_structrp 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,
@ -1452,12 +1452,12 @@ PNG_EXTERN void png_formatted_warning(png_const_structrp png_ptr,
#define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
#ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_EXTERN void png_ascii_from_fp PNGARG((png_structrp png_ptr, png_charp ascii,
png_size_t size, double fp, unsigned int precision));
PNG_EXTERN void png_ascii_from_fp PNGARG((png_const_structrp png_ptr,
png_charp ascii, png_size_t size, double fp, unsigned int precision));
#endif /* FLOATING_POINT */
#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_ascii_from_fixed PNGARG((png_structrp png_ptr,
PNG_EXTERN void png_ascii_from_fixed PNGARG((png_const_structrp png_ptr,
png_charp ascii, png_size_t size, png_fixed_point fp));
#endif /* FIXED_POINT */
#endif /* READ_sCAL */

View File

@ -903,12 +903,6 @@ png_read_destroy(png_structrp png_ptr)
png_ptr->free_me &= ~PNG_FREE_TRNS;
#endif
#ifdef PNG_READ_hIST_SUPPORTED
if (png_ptr->free_me & PNG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
png_ptr->free_me &= ~PNG_FREE_HIST;
#endif
inflateEnd(&png_ptr->zstream);
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
@ -1437,7 +1431,7 @@ png_image_read_composite(png_voidp argument)
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
png_byte interlace_type = png_ptr->interlaced;
int passes = 0;
int passes;
switch (interlace_type)
{
@ -1450,6 +1444,7 @@ png_image_read_composite(png_voidp argument)
break;
default:
passes = 0;
png_error(png_ptr, "unknown interlace type");
}
@ -1567,7 +1562,7 @@ png_image_read_background(png_voidp argument)
png_byte interlace_type = png_ptr->interlaced;
png_uint_32 height = image->height;
png_uint_32 width = image->width;
int pass, passes = 0;
int pass, passes;
/* Double check the convoluted logic below. We expect to get here with
* libpng doing rgb to gray and gamma correction but background processing
@ -1599,6 +1594,7 @@ png_image_read_background(png_voidp argument)
break;
default:
passes = 0;
png_error(png_ptr, "unknown interlace type");
}

117
pngset.c
View File

@ -22,7 +22,7 @@
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
png_set_bKGD(png_structrp png_ptr, png_inforp info_ptr,
png_set_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_color_16p background)
{
png_debug1(1, "in %s storage function", "bKGD");
@ -37,7 +37,7 @@ png_set_bKGD(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_cHRM_SUPPORTED
void PNGFAPI
png_set_cHRM_fixed(png_structrp png_ptr, png_inforp info_ptr,
png_set_cHRM_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
png_fixed_point blue_x, png_fixed_point blue_y)
@ -65,7 +65,7 @@ png_set_cHRM_fixed(png_structrp png_ptr, png_inforp info_ptr,
}
void PNGFAPI
png_set_cHRM_XYZ_fixed(png_structrp png_ptr, png_inforp info_ptr,
png_set_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
png_fixed_point int_red_X, png_fixed_point int_red_Y,
png_fixed_point int_red_Z, png_fixed_point int_green_X,
png_fixed_point int_green_Y, png_fixed_point int_green_Z,
@ -99,7 +99,7 @@ png_set_cHRM_XYZ_fixed(png_structrp png_ptr, png_inforp info_ptr,
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_cHRM(png_structrp png_ptr, png_inforp info_ptr,
png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
double white_x, double white_y, double red_x, double red_y,
double green_x, double green_y, double blue_x, double blue_y)
{
@ -115,7 +115,7 @@ png_set_cHRM(png_structrp png_ptr, png_inforp info_ptr,
}
void PNGAPI
png_set_cHRM_XYZ(png_structrp png_ptr, png_inforp info_ptr, double red_X,
png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
double red_Y, double red_Z, double green_X, double green_Y, double green_Z,
double blue_X, double blue_Y, double blue_Z)
{
@ -136,8 +136,8 @@ png_set_cHRM_XYZ(png_structrp png_ptr, png_inforp info_ptr, double red_X,
#ifdef PNG_gAMA_SUPPORTED
void PNGFAPI
png_set_gAMA_fixed(png_structrp png_ptr, png_inforp info_ptr, png_fixed_point
file_gamma)
png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
png_fixed_point file_gamma)
{
png_debug1(1, "in %s storage function", "gAMA");
@ -164,7 +164,7 @@ png_set_gAMA_fixed(png_structrp png_ptr, png_inforp info_ptr, png_fixed_point
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_gAMA(png_structrp png_ptr, png_inforp info_ptr, double file_gamma)
png_set_gAMA(png_const_structrp png_ptr, png_inforp info_ptr, double file_gamma)
{
png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma,
"png_set_gAMA"));
@ -174,7 +174,8 @@ png_set_gAMA(png_structrp png_ptr, png_inforp info_ptr, double file_gamma)
#ifdef PNG_hIST_SUPPORTED
void PNGAPI
png_set_hIST(png_structrp png_ptr, png_inforp info_ptr, png_const_uint_16p hist)
png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_uint_16p hist)
{
int i;
@ -197,26 +198,26 @@ png_set_hIST(png_structrp png_ptr, png_inforp info_ptr, png_const_uint_16p hist)
/* 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));
info_ptr->hist = png_voidcast(png_uint_16p, png_malloc_warn(png_ptr,
PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)));
if (png_ptr->hist == NULL)
if (info_ptr->hist == NULL)
{
png_warning(png_ptr, "Insufficient memory for hIST chunk data");
return;
}
for (i = 0; i < info_ptr->num_palette; i++)
png_ptr->hist[i] = hist[i];
info_ptr->hist = png_ptr->hist;
info_ptr->valid |= PNG_INFO_hIST;
info_ptr->free_me |= PNG_FREE_HIST;
for (i = 0; i < info_ptr->num_palette; i++)
info_ptr->hist[i] = hist[i];
info_ptr->valid |= PNG_INFO_hIST;
}
#endif
void PNGAPI
png_set_IHDR(png_structrp png_ptr, png_inforp info_ptr,
png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type)
@ -266,7 +267,7 @@ png_set_IHDR(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_oFFs_SUPPORTED
void PNGAPI
png_set_oFFs(png_structrp png_ptr, png_inforp info_ptr,
png_set_oFFs(png_const_structrp png_ptr, png_inforp info_ptr,
png_int_32 offset_x, png_int_32 offset_y, int unit_type)
{
png_debug1(1, "in %s storage function", "oFFs");
@ -283,7 +284,7 @@ png_set_oFFs(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_pCAL_SUPPORTED
void PNGAPI
png_set_pCAL(png_structrp png_ptr, png_inforp info_ptr,
png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
int nparams, png_const_charp units, png_charpp params)
{
@ -375,7 +376,7 @@ png_set_pCAL(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_sCAL_SUPPORTED
void PNGAPI
png_set_sCAL_s(png_structrp png_ptr, png_inforp info_ptr,
png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
int unit, png_const_charp swidth, png_const_charp sheight)
{
png_size_t lengthw = 0, lengthh = 0;
@ -438,8 +439,8 @@ png_set_sCAL_s(png_structrp png_ptr, png_inforp info_ptr,
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_sCAL(png_structrp png_ptr, png_inforp info_ptr, int unit, double width,
double height)
png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
double width, double height)
{
png_debug1(1, "in %s storage function", "sCAL");
@ -468,7 +469,7 @@ png_set_sCAL(png_structrp png_ptr, png_inforp info_ptr, int unit, double width,
# ifdef PNG_FIXED_POINT_SUPPORTED
void PNGAPI
png_set_sCAL_fixed(png_structrp png_ptr, png_inforp info_ptr, int unit,
png_set_sCAL_fixed(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
png_fixed_point width, png_fixed_point height)
{
png_debug1(1, "in %s storage function", "sCAL");
@ -497,7 +498,7 @@ png_set_sCAL_fixed(png_structrp png_ptr, png_inforp info_ptr, int unit,
#ifdef PNG_pHYs_SUPPORTED
void PNGAPI
png_set_pHYs(png_structrp png_ptr, png_inforp info_ptr,
png_set_pHYs(png_const_structrp png_ptr, png_inforp info_ptr,
png_uint_32 res_x, png_uint_32 res_y, int unit_type)
{
png_debug1(1, "in %s storage function", "pHYs");
@ -537,6 +538,9 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
/* It may not actually be necessary to set png_ptr->palette here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*
* 1.6.0: the above statement appears to be incorrect; something has to set
* the palette inside png_struct on read.
*/
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
@ -558,7 +562,7 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_sBIT_SUPPORTED
void PNGAPI
png_set_sBIT(png_structrp png_ptr, png_inforp info_ptr,
png_set_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_color_8p sig_bit)
{
png_debug1(1, "in %s storage function", "sBIT");
@ -573,7 +577,7 @@ png_set_sBIT(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_sRGB_SUPPORTED
void PNGAPI
png_set_sRGB(png_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
{
png_debug1(1, "in %s storage function", "sRGB");
@ -585,7 +589,7 @@ png_set_sRGB(png_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
}
void PNGAPI
png_set_sRGB_gAMA_and_cHRM(png_structrp png_ptr, png_inforp info_ptr,
png_set_sRGB_gAMA_and_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
int srgb_intent)
{
png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
@ -614,7 +618,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_iCCP_SUPPORTED
void PNGAPI
png_set_iCCP(png_structrp png_ptr, png_inforp info_ptr,
png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_charp name, int compression_type,
png_const_bytep profile, png_uint_32 proflen)
{
@ -665,8 +669,8 @@ png_set_iCCP(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_TEXT_SUPPORTED
void PNGAPI
png_set_text(png_structrp png_ptr, png_inforp info_ptr, png_const_textp text_ptr,
int num_text)
png_set_text(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_textp text_ptr, int num_text)
{
int ret;
ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
@ -676,7 +680,7 @@ png_set_text(png_structrp png_ptr, png_inforp info_ptr, png_const_textp text_ptr
}
int /* PRIVATE */
png_set_text_2(png_structrp png_ptr, png_inforp info_ptr,
png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_textp text_ptr, int num_text)
{
int i;
@ -856,7 +860,8 @@ png_set_text_2(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_tIME_SUPPORTED
void PNGAPI
png_set_tIME(png_structrp png_ptr, png_inforp info_ptr, png_const_timep mod_time)
png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_timep mod_time)
{
png_debug1(1, "in %s storage function", "tIME");
@ -893,13 +898,17 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
/* It may not actually be necessary to set png_ptr->trans_alpha here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*
* 1.6.0: The above statement is incorrect; png_handle_tRNS effectively
* relies on png_set_tRNS storing the information in png_struct
* (otherwise it won't be there for the code in pngrtran.c).
*/
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
/* 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_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, 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);
@ -910,11 +919,11 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
int sample_max = (1 << info_ptr->bit_depth);
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_color->gray > sample_max) ||
trans_color->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)))
(trans_color->red > sample_max ||
trans_color->green > sample_max ||
trans_color->blue > sample_max)))
png_warning(png_ptr,
"tRNS chunk has out-of-range samples for bit_depth");
@ -937,7 +946,7 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_sPLT_SUPPORTED
void PNGAPI
png_set_sPLT(png_structrp png_ptr,
png_set_sPLT(png_const_structrp png_ptr,
png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)
/*
* entries - array of png_sPLT_t structures
@ -1015,7 +1024,7 @@ png_set_sPLT(png_structrp png_ptr,
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
void PNGAPI
png_set_unknown_chunks(png_structrp png_ptr,
png_set_unknown_chunks(png_const_structrp png_ptr,
png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
{
png_unknown_chunkp np;
@ -1080,7 +1089,7 @@ png_set_unknown_chunks(png_structrp png_ptr,
}
void PNGAPI
png_set_unknown_chunk_location(png_structrp png_ptr, png_inforp info_ptr,
png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
int chunk, int location)
{
if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
@ -1097,19 +1106,18 @@ png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
png_debug(1, "in png_permit_mng_features");
if (png_ptr == NULL)
return (png_uint_32)0;
return 0;
png_ptr->mng_features_permitted =
(png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
png_ptr->mng_features_permitted = mng_features & PNG_ALL_MNG_FEATURES;
return (png_uint_32)png_ptr->mng_features_permitted;
return png_ptr->mng_features_permitted;
}
#endif
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
void PNGAPI
png_set_keep_unknown_chunks(png_structrp png_ptr, int keep, png_const_bytep
chunk_list, int num_chunks)
png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
png_const_bytep chunk_list, int num_chunks)
{
png_bytep new_list, p;
int i, old_num_chunks;
@ -1142,14 +1150,12 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep, png_const_bytep
if (png_ptr->chunk_list != NULL)
{
png_memcpy(new_list, png_ptr->chunk_list,
(png_size_t)(5*old_num_chunks));
png_memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
png_free(png_ptr, png_ptr->chunk_list);
png_ptr->chunk_list=NULL;
}
png_memcpy(new_list + 5*old_num_chunks, chunk_list,
(png_size_t)(5*num_chunks));
png_memcpy(new_list + 5*old_num_chunks, chunk_list, 5*num_chunks);
for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
*p=(png_byte)keep;
@ -1177,7 +1183,8 @@ png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr,
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_set_rows(png_structrp png_ptr, png_inforp info_ptr, png_bytepp row_pointers)
png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytepp row_pointers)
{
png_debug1(1, "in %s storage function", "rows");
@ -1230,7 +1237,6 @@ png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
}
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
@ -1250,8 +1256,7 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
/* This function was added to libpng 1.4.0 */
void PNGAPI
png_set_chunk_cache_max (png_structrp png_ptr,
png_uint_32 user_chunk_cache_max)
png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
{
if (png_ptr)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;

View File

@ -238,10 +238,6 @@ struct png_struct_def
png_bytep quantize_index; /* index translation for palette files */
#endif
#if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
png_uint_16p hist; /* histogram */
#endif
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_byte heuristic_method; /* heuristic for row filter selection */
png_byte num_prev_filters; /* number of weights for previous rows */