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[libpng16] Removed non-working ICC profile support code. There was too much

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code for too little gain; implementing full ICC color correction is maybe
desireable but is left up to applications.
This commit is contained in:
John Bowler 2012-11-01 08:12:47 -05:00 committed by Glenn Randers-Pehrson
parent 7f912dbeb5
commit 520803d57e
12 changed files with 44 additions and 1382 deletions
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7
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.6.0beta31 - October 27, 2012 Libpng 1.6.0beta31 - November 1, 2012
This is not intended to be a public release. It will be replaced This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version. within a few weeks by a public version or by another test version.
@ -525,7 +525,7 @@ Version 1.6.0beta30 [October 24, 2012]
Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
pngrtran.c (Domani Hannes). pngrtran.c (Domani Hannes).
Version 1.6.0beta31 [October 27, 2012] Version 1.6.0beta31 [November 1, 2012]
Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30. Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30.
Made pngvalid so that it will build outside the libpng source tree. Made pngvalid so that it will build outside the libpng source tree.
Changed ICC profile support to allow use of an external color management Changed ICC profile support to allow use of an external color management
@ -550,6 +550,9 @@ Version 1.6.0beta31 [October 27, 2012]
question (typically most users who disable it won't). question (typically most users who disable it won't).
Fixed GUIDs in projects/vstudio. Some were duplicated or missing, Fixed GUIDs in projects/vstudio. Some were duplicated or missing,
resulting in VS2010 having to update the files. resulting in VS2010 having to update the files.
Removed non-working ICC profile support code. There was too much code
for too little gain; implementing full ICC color correction is maybe
desireable but is left up to applications.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

5
CHANGES
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@ -4277,7 +4277,7 @@ Version 1.6.0beta30 [October 24, 2012]
Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
pngrtran.c (Domani Hannes). pngrtran.c (Domani Hannes).
Version 1.6.0beta31 [October 27, 2012] Version 1.6.0beta31 [November 1, 2012]
Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30. Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30.
Made pngvalid so that it will build outside the libpng source tree. Made pngvalid so that it will build outside the libpng source tree.
Changed ICC profile support to allow use of an external color management Changed ICC profile support to allow use of an external color management
@ -4302,6 +4302,9 @@ Version 1.6.0beta31 [October 27, 2012]
question (typically most users who disable it won't). question (typically most users who disable it won't).
Fixed GUIDs in projects/vstudio. Some were duplicated or missing, Fixed GUIDs in projects/vstudio. Some were duplicated or missing,
resulting in VS2010 having to update the files. resulting in VS2010 having to update the files.
Removed non-working ICC profile support code. There was too much code
for too little gain; implementing full ICC color correction is maybe
desireable but is left up to applications.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

1158
png.c
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File diff suppressed because it is too large Load Diff

96
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.6.0beta31 - October 26, 2012 * libpng version 1.6.0beta31 - November 1, 2012
* Copyright (c) 1998-2012 Glenn Randers-Pehrson * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -11,7 +11,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * 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 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.0beta31 - October 26, 2012: Glenn * libpng versions 0.97, January 1998, through 1.6.0beta31 - November 1, 2012: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -198,7 +198,7 @@
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* *
* libpng versions 1.2.6, August 15, 2004, through 1.6.0beta31, October 26, 2012, are * libpng versions 1.2.6, August 15, 2004, through 1.6.0beta31, November 1, 2012, are
* Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are * Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5 * distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors: * with the following individual added to the list of Contributing Authors:
@ -310,7 +310,7 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* October 26, 2012 * November 1, 2012
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
@ -378,7 +378,7 @@
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.0beta31" #define PNG_LIBPNG_VER_STRING "1.6.0beta31"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.0beta31 - October 26, 2012\n" " libpng version 1.6.0beta31 - November 1, 2012\n"
#define PNG_LIBPNG_VER_SONUM 16 #define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16 #define PNG_LIBPNG_VER_DLLNUM 16
@ -3204,90 +3204,6 @@ PNG_EXPORT(242, void, png_set_check_for_invalid_index,
(png_structrp png_ptr, int allowed)); (png_structrp png_ptr, int allowed));
#endif #endif
/*******************************************************************************
* CMS (Color Management System) SUPPORT
*******************************************************************************
*
* The PNG file format supports embedding of ICC profiles, however libpng
* provides only limited support for handling these profiles. In particular
* libpng includes no support for using the profile to transform data into a
* different color space. If PNG_ICC_SUPPORTED is set, however, libpng allows
* an external CMS to be registered into the png_struct after it is created.
* This simply records a single callback function to transform samples between
* two color spaces.
*/
typedef struct png_cms_data *png_cms_datap, * PNG_RESTRICT png_cms_datarp;
/* An opaque type defined by a specific implementation to hold whatever data
* is required. The implementation is responsible for all storage management
* of this data.
*/
typedef PNG_CALLBACK(png_uint_32, *png_cms_transform_ptr,
(png_const_structrp png_ptr, png_cms_datarp data_ptr, png_const_voidp input,
png_alloc_size_t input_bytes, png_voidp output,
png_alloc_size_t output_bytes, int format, int intent));
/* Transform input[input_bytes] of samples to output[output_bytes]. The
* format of the input and output is given by 'format'. The function shall
* transform only so much input as there is space for in the output buffer.
* 'intent' is the ICC intent required for the transformation.
*
* The connection space data (which may be either the input or output) is
* always either 16-bit achromatic data (as described in Annex F.2 of the v4
* ICC specification) for grayscale PNG files or 16-bit PCSXYZ data for RGB
* PNG files. Any alpha channel may be present in the connection space, in
* which case it is a 16-bit channel and the alpha value follows each sample.
* Samples are not pre-multiplied by the alpha. The connection space data
* is stored as an array of png_uint_16 values in the native representation
* of the machine.
*
* For transforms to the connection space the input is in the PNG format
* using either 8-bit or big-endian 16-bit components. 16-bit quantities use
* the PNG layout - big-endian in two bytes.
*
* By default a transform from the connection space will be to 8-bit sRGB
* (with an optional alpha value) or 8-bit gray encoded with the inverse of
* the sRGB transfer function. If png_set_cms_output is called, however, the
* transform may produce arbitrary output in a format potentially not handled
* by libpng.
*
* It is valid to register a CMS when writing a PNG image, however the CMS
* will only be used to generate appropriate values for cHRM and gAMA of the
* profile.
*
* The format parameter is made up of the following flags:
*/
#define PNG_CMS_FORMAT_FLAG_ALPHA 0x01 /* data has alpha channel */
#define PNG_CMS_FORMAT_FLAG_16BIT 0x02 /* 16-bit image components else 8-bit */
#define PNG_CMS_FORMAT_FLAG_PCS 0x04 /* input is PCS data, else image data */
#ifdef PNG_ICC_SUPPORTED
PNG_EXPORT(243, void, png_set_cms, (png_structrp png_ptr,
png_cms_datap cms_data_ptr, png_cms_transform_ptr cms_transform_function));
/* Register the CMS transform function. The given pointer will be passed to
* every call to the function.
*/
#ifdef PNG_READ_SUPPORTED
PNG_EXPORT(244, void, png_set_cms_output, (png_structrp png_ptr,
int bytes_per_pixel, int rendering_intent));
/* Inform libpng that the transform function will write output requiring
* bytes_per_pixel bytes for each sample. The output need not be in any
* particular format, for example the transform could produce a print
* separation. libpng will provide a buffer equal in size to the row width
* of the image times the bytes_per_pixel value (and the application must
* provide this size buffer.)
*
* This also forces the CMS transform to be used even when it is apparently
* not necessary (e.g. for sRGB input data, or for PNG files with no ICC
* profile information and no sRGB data.) The intent overrides the default,
* which is perceptual.
*/
#endif
#endif
/*******************************************************************************
* END OF CMS (Color Management System) SUPPORT
******************************************************************************/
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project /* Maintainer: Put new public prototypes here ^, in libpng.3, and project
* defs * defs
*/ */
@ -3297,7 +3213,7 @@ PNG_EXPORT(244, void, png_set_cms_output, (png_structrp png_ptr,
* scripts/symbols.def as well. * scripts/symbols.def as well.
*/ */
#ifdef PNG_EXPORT_LAST_ORDINAL #ifdef PNG_EXPORT_LAST_ORDINAL
PNG_EXPORT_LAST_ORDINAL(244); PNG_EXPORT_LAST_ORDINAL(242);
#endif #endif
#ifdef __cplusplus #ifdef __cplusplus

9
pngpriv.h
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@ -1467,16 +1467,15 @@ PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_const_charp name, png_colorspacerp colorspace, png_const_charp name,
png_uint_32 profile_length, png_uint_32 profile_length,
png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY); png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_icc_set_gAMA_and_cHRM,( #ifdef PNG_sRGB_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_icc_set_sRGB,(
png_const_structrp png_ptr, png_colorspacerp colorspace, png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_const_bytep profile, uLong adler), PNG_EMPTY); png_const_bytep profile, uLong adler), PNG_EMPTY);
/* 'adler' is the Adler32 checksum of the uncompressed profile data. It may /* 'adler' is the Adler32 checksum of the uncompressed profile data. It may
* be zero to indicate that it is not available. It is used, if provided, * be zero to indicate that it is not available. It is used, if provided,
* as a fast check on the profile when checking to see if it is sRGB. * as a fast check on the profile when checking to see if it is sRGB.
* The routine may not set gAMA or cHRM if there are problems in the profile,
* however none of these problems are fatal (the profile has already been
* checked.)
*/ */
#endif
#endif /* iCCP */ #endif /* iCCP */
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED

15
pngrutil.c
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@ -1276,7 +1276,7 @@ png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
return; return;
} }
png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent); (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent);
png_colorspace_sync(png_ptr, info_ptr); png_colorspace_sync(png_ptr, info_ptr);
} }
#endif /* PNG_READ_sRGB_SUPPORTED */ #endif /* PNG_READ_sRGB_SUPPORTED */
@ -1447,13 +1447,12 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
finished = 1; finished = 1;
/* Set the gAMA and cHRM information, this # ifdef PNG_sRGB_SUPPORTED
* checks for a known sRGB profile. The /* Check for a match against sRGB */
* result is 0 on error. png_icc_set_sRGB(png_ptr,
*/ &png_ptr->colorspace, profile,
png_icc_set_gAMA_and_cHRM(png_ptr, png_ptr->zstream.adler);
&png_ptr->colorspace, keyword, profile, # endif
png_ptr->zstream.adler);
/* Steal the profile for info_ptr. */ /* Steal the profile for info_ptr. */
if (info_ptr != NULL) if (info_ptr != NULL)

33
pngset.c
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@ -578,7 +578,7 @@ png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
if (png_ptr == NULL || info_ptr == NULL) if (png_ptr == NULL || info_ptr == NULL)
return; return;
png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent); (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent);
png_colorspace_sync_info(png_ptr, info_ptr); png_colorspace_sync_info(png_ptr, info_ptr);
} }
@ -1549,35 +1549,4 @@ png_set_check_for_invalid_index(png_structrp png_ptr, int allowed)
png_ptr->num_palette_max = -1; png_ptr->num_palette_max = -1;
} }
#endif #endif
#ifdef PNG_ICC_SUPPORTED
void PNGAPI
png_set_cms(png_structrp png_ptr, png_cms_datap cms_data_ptr,
png_cms_transform_ptr cms_transform_function)
{
png_ptr->cms_transform_fn = cms_transform_function;
png_ptr->cms_data_ptr = cms_data_ptr;
}
#ifdef PNG_READ_SUPPORTED
void PNGAPI
png_set_cms_output(png_structrp png_ptr, int bytes_per_pixel,
int rendering_intent)
{
if (png_ptr->mode & PNG_IS_READ_STRUCT)
{
png_ptr->cms_bytes_per_pixel = bytes_per_pixel;
png_ptr->cms_intent = rendering_intent;
/* A CMS must be registered before calling this */
if (png_ptr->cms_transform_fn == NULL)
png_app_error(png_ptr, "no CMS registered to transform output");
}
else
png_app_error(png_ptr, "attempt to do CMS tranform on write");
}
#endif /* PNG_READ_SUPPORTED */
#endif /* PNG_ICC_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

81
pngstruct.h
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@ -119,7 +119,6 @@ typedef struct png_colorspace
#ifdef PNG_COLORSPACE_SUPPORTED #ifdef PNG_COLORSPACE_SUPPORTED
png_xy end_points_xy; /* End points as chromaticities */ png_xy end_points_xy; /* End points as chromaticities */
png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */ png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */
png_uint_32 icc_info; /* Record of information from the colorspace */
png_uint_16 rendering_intent; /* Rendering intent of a profile */ png_uint_16 rendering_intent; /* Rendering intent of a profile */
#endif #endif
@ -129,74 +128,6 @@ typedef struct png_colorspace
typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp; typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp;
/* ICC specific flags for the 'icc_info' field. */
/* The first four bits are for information defined from the profile, the
* remainder of the bits indicate the presence of specific tags. The #define
* names are derived from the tag name in the ICC 2010 (v4) specification.
*/
# define PNG_ICC_PCSXYZ 0x00000001U /* PCSXYS, else PCSLAB */
# define PNG_ICC_RGB 0x00000002U /* 'RGB ', else 'GRAY ' */
/* 0x00000004U reserved */
/* 0x00000008U reserved */
/* A utility to return the number of channels on the A side of the transform
* given an info value (can be optimized).
*/
# define PNG_ICC_CHANNELS(info) ((((info)&PNG_ICC_RGB)?2U:0U)+1U)
/* The profile description and copyright must be present in all valid ICC
* profiles, however libpng does not use them so absence is just reported as
* a warning. The media white point should be present too, but if it isn't
* all we lose is the ability to know if it differs from the adopted white
* (i.e. the information that the device maxima are actually colored;
* a non-white substrate for a printer, or an uncorrected scan for example.)
* The chromaticAdaptationTag tells us that the adopted white of the original
* differs from the PCS adopted white (which is identical to the PCS
* illuminant and should always be D50).
*/
# define PNG_ICC_profileDescriptionTag 0x00000010U /* required */
# define PNG_ICC_copyrightTag 0x00000020U /* required */
# define PNG_ICC_mediaWhitePointTag 0x00000040U /* required */
# define PNG_ICC_chromaticAdaptationTag 0x00000080U /* optional */
/* Tags that are required in all profiles (except DeviceLink): */
# define PNG_ICC_REQUIRED_BASE 0x00000070U
/* Other tags have to appear in specific profiles. In general a profile must
* either contain appropriate TRC and (for RGB profiles) matrix tags *or* it
* must contain AToB0 and BToA0 - the CLUT based transforms to an absolute
* colorimetric PCS. In the TRC case the PCS encoding must be PCSXYZ.
*/
# define PNG_ICC_redMatrixColumnTag 0x00000100U
# define PNG_ICC_greenMatrixColumnTag 0x00000200U
# define PNG_ICC_blueMatrixColumnTag 0x00000400U
/* 0x00000800U reserved */
# define PNG_ICC_redTRCTag 0x00001000U
# define PNG_ICC_greenTRCTag 0x00002000U
# define PNG_ICC_blueTRCTag 0x00004000U
# define PNG_ICC_grayTRCTag 0x00008000U
# define PNG_ICC_REQUIRED_RGB_MATRIXTRC 0x00007700U /* Required for RGB TRC */
# define PNG_ICC_ALL_TRC 0x0000f000U /* Includes all TRCTags */
# define PNG_ICC_REQUIRED_MATRIX 0x00000700U /* All MatrixColumnTags */
# define PNG_ICC_AToB0Tag 0x00010000U
# define PNG_ICC_BToA0Tag 0x00020000U
# define PNG_ICC_AToB1Tag 0x00040000U
# define PNG_ICC_BToA1Tag 0x00080000U
# define PNG_ICC_AToB2Tag 0x00100000U
# define PNG_ICC_BToA2Tag 0x00200000U
# define PNG_ICC_AToB_TAGS 0x00050000U /* Just AToB0 and AToB1 */
# define PNG_ICC_ALL_LUT 0x003f0000U
/* 0x00400000U reserved */
/* 0x00800000U reserved */
/* The ICC profile specification allows for shortcuts in the cHRM calculation
* via the colorant table (clrt) or the chromaticity tag (chrm).
*/
# define PNG_ICC_chromaticityTag 0x01000000U
# define PNG_ICC_colorantTableTag 0x02000000U
# define PNG_ICC_gamutTag 0x04000000U
/* General flags for the 'flags' field */ /* General flags for the 'flags' field */
#define PNG_COLORSPACE_HAVE_GAMMA 0x0001 #define PNG_COLORSPACE_HAVE_GAMMA 0x0001
#define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002 #define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002
@ -548,17 +479,5 @@ struct png_struct_def
png_colorspace colorspace; png_colorspace colorspace;
#endif #endif
#endif #endif
#ifdef PNG_ICC_SUPPORTED
/* Full ICC support requires an external CMS be registered in the png_struct
* after it is created. The registration stores this information.
*/
png_cms_transform_ptr cms_transform_fn;
png_cms_datap cms_data_ptr;
#ifdef PNG_READ_SUPPORTED
int cms_bytes_per_pixel; /* non-standard output size */
int cms_intent; /* for non-standard output */
#endif
#endif /* PNG_ICC_SUPPORTED */
}; };
#endif /* PNGSTRUCT_H */ #endif /* PNGSTRUCT_H */

16
scripts/pnglibconf.dfa
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@ -151,7 +151,7 @@ logunsupported = 1
# These are currently experimental features; define them if you want (NOTE: # These are currently experimental features; define them if you want (NOTE:
# experimental options must be disabled before they are defined in this file!) # experimental options must be disabled before they are defined in this file!)
option ICC disabled # NONE
# Note that PNG_USR_CONFIG only has an effect when building # Note that PNG_USR_CONFIG only has an effect when building
# pnglibconf.h # pnglibconf.h
@ -318,20 +318,6 @@ setting USER_CHUNK_MALLOC_MAX
option SAFE_LIMITS enables USER_LIMITS disabled option SAFE_LIMITS enables USER_LIMITS disabled
= SAFE_LIMITS SAFE_LIMITS = SAFE_LIMITS SAFE_LIMITS
# ICC profile support; basic ICC profile support is enabled if iCCP chunk read
# or write is enabled. The application must perform all iCCP profile handling
# itself. If full support is enabled with the option below libpng will attempt
# to do more processing using the profile data itself, this includes setting
# appropriate values for cHRM and gAMA chunks if not present in the stream.
#
# ICC profile support is not build in to core libpng because of the size of the
# code required; an external ICC implementation must be passed to libpng to
# enable it.
#
# WARNING: this option is CURRENTLY UNTESTED because a test CMS implementation
# has not yet been written, as a result it is disabled in current beta builds.
option ICC requires iCCP enables SAVE_INT_32
# All of the following options relate to code capabilities for # All of the following options relate to code capabilities for
# processing image data before creating a PNG or after reading one. # processing image data before creating a PNG or after reading one.
# You can remove these capabilities safely and still be PNG # You can remove these capabilities safely and still be PNG

3
scripts/pnglibconf.h.prebuilt
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@ -3,7 +3,7 @@
/* pnglibconf.h - library build configuration */ /* pnglibconf.h - library build configuration */
/* Libpng 1.6.0beta31 - October 26, 2012 */ /* Libpng 1.6.0beta31 - November 1, 2012 */
/* Copyright (c) 1998-2012 Glenn Randers-Pehrson */ /* Copyright (c) 1998-2012 Glenn Randers-Pehrson */
@ -63,7 +63,6 @@
#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED #define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
#define PNG_hIST_SUPPORTED #define PNG_hIST_SUPPORTED
#define PNG_iCCP_SUPPORTED #define PNG_iCCP_SUPPORTED
/*#undef PNG_ICC_SUPPORTED*/
#define PNG_INCH_CONVERSIONS_SUPPORTED #define PNG_INCH_CONVERSIONS_SUPPORTED
#define PNG_INFO_IMAGE_SUPPORTED #define PNG_INFO_IMAGE_SUPPORTED
#define PNG_IO_STATE_SUPPORTED #define PNG_IO_STATE_SUPPORTED

2
scripts/symbols.def
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@ -247,5 +247,3 @@ EXPORTS
png_image_write_to_stdio @240 png_image_write_to_stdio @240
png_convert_to_rfc1123_buffer @241 png_convert_to_rfc1123_buffer @241
png_set_check_for_invalid_index @242 png_set_check_for_invalid_index @242
png_set_cms @243
png_set_cms_output @244

1
scripts/symbols.dfn
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@ -42,7 +42,6 @@
#define PNG_READ_BIG_ENDIAN_SUPPORTED /* should do nothing! */ #define PNG_READ_BIG_ENDIAN_SUPPORTED /* should do nothing! */
#define PNG_INCH_CONVERSIONS_SUPPORTED #define PNG_INCH_CONVERSIONS_SUPPORTED
#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED #define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
#define PNG_ICC_SUPPORTED /* currently disabled */
#undef PNG_H #undef PNG_H
#include "../png.h" #include "../png.h"