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[master] Revise pngconf.h (iTXt handling) 

and avoid reference to time.h "tm" structure in png.h and pngwrite.c
This commit is contained in:
Glenn Randers-Pehrson 2009-11-01 16:32:57 -06:00
parent 3de7bde0e1
commit 4c49647788
3 changed files with 11 additions and 33 deletions
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6
png.h
View File

@ -1646,18 +1646,18 @@ extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
PNGARG((png_structp png_ptr, png_timep ptime));
#endif
#ifndef _WIN32_WCE
/* "time.h" functions are not supported on WindowsCE */
#ifdef PNG_WRITE_tIME_SUPPORTED
/* Convert from a struct tm to png_time */
# ifndef _WIN32_WCE
/* "tm" structure is not supported on WindowsCE */
extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
struct tm FAR * ttime));
/* 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 /* _WIN32_WCE */
#endif /* PNG_WRITE_tIME_SUPPORTED */
#endif /* _WIN32_WCE */
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */

35
pngconf.h
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@ -523,43 +523,22 @@
* iTXt support was added. iTXt support was turned off by default through
* libpng-1.2.x, to support old apps that malloc the png_text structure
* instead of calling png_set_text() and letting libpng malloc it. It
* will be turned on by default in libpng-1.4.0.
* was turned on by default in libpng-1.2.41.
*/
/* If you have previously been defining PNG_iTXt_SUPPORTED, please
* continue to do so in libpng-1.2.41 and later, until you switch to
* libpng-1.4.0, even though it is not necessary now to gain iTXt support.
* Your PNG_iTXt_SUPPORTED definition will be interpreted in png_set_text()
* as a signal that you have defined it in your builds of previous libpng
* versions that did not support iTXt by default.
*/
#if !defined(PNG_iTXt_SUPPORTED) && !defined(PNG_READ_iTXt_SUPPORTED) && \
!defined(PNG_WRITE_iTXt_SUPPORTED)
# define PNG_iTXt_NOT_PREVIOUSLY_SUPPORTED
#endif
#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
#if 0
#ifndef PNG_NO_iTXt
# ifndef PNG_iTXt_SUPPORTED
# ifndef PNG_NO_iTXt_SUPPORTED
# define PNG_NO_iTXt_SUPPORTED
# endif
# ifndef PNG_NO_READ_iTXt
# define PNG_NO_READ_iTXt
# endif
# ifndef PNG_NO_WRITE_iTXt
# define PNG_NO_WRITE_iTXt
# endif
# define PNG_iTXt_SUPPORTED
# endif
#endif
#ifndef PNG_NO_iTXt_SUPPORTED
# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
# define PNG_READ_iTXt
# define PNG_READ_iTXt_SUPPORTED
# endif
# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
# define PNG_WRITE_iTXt
# define PNG_WRITE_iTXt_SUPPORTED
# endif
#endif
#endif
/* The following support, added after version 1.0.0, can be turned off here en
* masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility

3
pngwrite.c
View File

@ -425,7 +425,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
#ifdef PNG_WRITE_tIME_SUPPORTED
#ifndef _WIN32_WCE
/* "time.h" functions are not supported on WindowsCE */
/* "tm" structure is not supported on WindowsCE */
void PNGAPI
png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
{
@ -452,7 +452,6 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
#endif
#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,