/* pngconf.h - machine configurable file for libpng
*
- * libpng 1.0.1
+ * libpng 1.0.3 - January 14, 1999
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
- * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 15, 1998
+ * Copyright (c) 1998, 1999 Glenn Randers-Pehrson
*/
/* Any machine specific code is near the front of this file, so if you
#ifndef PNGCONF_H
#define PNGCONF_H
+
/* 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
* machine. One of these will be allocated per png_struct. When this
#define PNG_MAX_MALLOC_64K
#endif
-/* This protects us against compilers which run on a windowing system
+/* This protects us against compilers that run on a windowing system
* and thus don't have or would rather us not use the stdio types:
* stdin, stdout, and stderr. The only one currently used is stderr
- * in png_error() and png_warning(). #defining PNG_NO_STDIO will
- * prevent these from being compiled and used.
+ * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
+ * prevent these from being compiled and used. #defining PNG_NO_STDIO
+ * will also prevent these, plus will prevent the entire set of stdio
+ * macros and functions (FILE *, printf, etc.) from being compiled and used,
+ * unless PNG_DEBUG has been #defined.
+ *
+ * #define PNG_NO_CONSOLE_IO
* #define PNG_NO_STDIO
*/
-#ifndef PNG_NO_STDIO
-#include <stdio.h>
+#ifdef PNG_DEBUG
+# if (PNG_DEBUG > 0)
+# include <stdio.h>
+# endif
+#else
+# ifdef PNG_NO_STDIO
+# ifndef PNG_NO_CONSOLE_IO
+# define PNG_NO_CONSOLE_IO
+# endif
+# else
+# include <stdio.h>
+# endif
#endif
/* This macro protects us against machines that don't have function
/* Any transformations you will not be using can be undef'ed here */
/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
- to turn it off with "*TRANSFORMS_NOT_SUPPORTED" 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
+ 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.
+ typical installation of the library. (PNG_NO_* form added in version
+ 1.0.1c, for consistency)
*/
-#ifndef PNG_READ_TRANSFORMS_NOT_SUPPORTED
+#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_READ_TRANSFORMS)
#define PNG_READ_TRANSFORMS_SUPPORTED
#endif
-#ifndef PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_WRITE_TRANSFORMS)
#define PNG_WRITE_TRANSFORMS_SUPPORTED
#endif
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
+#ifndef PNG_NO_READ_EXPAND
#define PNG_READ_EXPAND_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_SHIFT
#define PNG_READ_SHIFT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_PACK
#define PNG_READ_PACK_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_BGR
#define PNG_READ_BGR_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_SWAP
#define PNG_READ_SWAP_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_PACKSWAP
#define PNG_READ_PACKSWAP_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_INVERT
#define PNG_READ_INVERT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_DITHER
#define PNG_READ_DITHER_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_BACKGROUND
#define PNG_READ_BACKGROUND_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_16_TO_8
#define PNG_READ_16_TO_8_SUPPORTED
+#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_NO_READ_GRAY_TO_RGB
#define PNG_READ_GRAY_TO_RGB_SUPPORTED
+#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_NO_READ_STRIP_ALPHA
#define PNG_READ_STRIP_ALPHA_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_USER_TRANSFORM
#define PNG_READ_USER_TRANSFORM_SUPPORTED
-/* the following aren't implemented yet
+#endif
+#ifndef PNG_NO_READ_RGB_TO_GRAY
#define PNG_READ_RGB_TO_GRAY_SUPPORTED
- */
+#endif
#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
-#ifndef PNG_PROGRESSIVE_READ_NOT_SUPPORTED /* if you don't do progressive */
+#if !defined(PNG_NO_PROGRESSIVE_READ) && \
+ !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
#define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
#endif /* about interlacing capability! You'll */
/* still have interlacing unless you change the following line: */
#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
+
+#ifndef PNG_NO_READ_COMPOSITED_NODIV
#define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */
+#endif
#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+#ifndef PNG_NO_WRITE_SHIFT
#define PNG_WRITE_SHIFT_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_PACK
#define PNG_WRITE_PACK_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_BGR
#define PNG_WRITE_BGR_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_SWAP
#define PNG_WRITE_SWAP_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_PACKSWAP
#define PNG_WRITE_PACKSWAP_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_INVERT
#define PNG_WRITE_INVERT_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_FILLER
#define PNG_WRITE_FILLER_SUPPORTED /* This is the same as WRITE_STRIP_ALPHA */
-#define PNG_WRITE_FLUSH_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_SWAP_ALPHA
#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_INVERT_ALPHA
#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
-#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_USER_TRANSFORM
#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#endif
#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
encoders, but can cause trouble
if left undefined */
-#if !defined(PNG_NO_STDIO)
+#ifndef PNG_NO_WRITE_WEIGHTED_FILTER
+#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#endif
+
+#ifndef PNG_NO_WRITE_FLUSH
+#define PNG_WRITE_FLUSH_SUPPORTED
+#endif
+
+#ifndef PNG_NO_STDIO
#define PNG_TIME_RFC1123_SUPPORTED
#endif
* png_get_x_offset_microns()
* png_get_y_offset_microns()
*/
-#if !defined(PNG_NO_EASY_ACCESS)
+#ifndef PNG_NO_EASY_ACCESS
#define PNG_EASY_ACCESS_SUPPORTED
#endif
/* very little testing */
/*
#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+#define PNG_USER_MEM_SUPPORTED
*/
/* This is only for PowerPC big-endian and 680x0 systems */
* a bit smaller.
*/
-#ifndef PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#endif
-#ifndef PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+#if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+ !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
#endif
#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#ifndef PNG_NO_READ_bKGD
#define PNG_READ_bKGD_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_cHRM
#define PNG_READ_cHRM_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_gAMA
#define PNG_READ_gAMA_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_hIST
#define PNG_READ_hIST_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_oFFs
#define PNG_READ_oFFs_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_pCAL
#define PNG_READ_pCAL_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_pHYs
#define PNG_READ_pHYs_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sBIT
#define PNG_READ_sBIT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sRGB
#define PNG_READ_sRGB_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tEXt
#define PNG_READ_tEXt_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tIME
#define PNG_READ_tIME_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_tRNS
#define PNG_READ_tRNS_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_zTXt
#define PNG_READ_zTXt_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_OPT_PLTE
#define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the optional */
- /* PLTE chunk in RGB and RGBA images */
+#endif /* PLTE chunk in RGB and RGBA images */
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#ifndef PNG_NO_WRITE_bKGD
#define PNG_WRITE_bKGD_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_cHRM
#define PNG_WRITE_cHRM_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_gAMA
#define PNG_WRITE_gAMA_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_hIST
#define PNG_WRITE_hIST_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_oFFs
#define PNG_WRITE_oFFs_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_pCAL
#define PNG_WRITE_pCAL_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_pHYs
#define PNG_WRITE_pHYs_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_sBIT
#define PNG_WRITE_sBIT_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_sRGB
#define PNG_WRITE_sRGB_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_tEXt
#define PNG_WRITE_tEXt_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_tIME
#define PNG_WRITE_tIME_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_tRNS
#define PNG_WRITE_tRNS_SUPPORTED
+#endif
+#ifndef PNG_NO_WRITE_zTXt
#define PNG_WRITE_zTXt_SUPPORTED
+#endif
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
/* need the time information for reading tIME chunks */
*/
typedef charf * png_zcharp;
typedef charf * FAR * png_zcharpp;
-typedef z_stream FAR * png_zstreamp;
+typedef z_stream FAR * png_zstreamp;
/* allow for compilation as dll under MS Windows */
#ifdef __WIN32DLL__
# 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_strlen _fstrlen
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
#else /* use the usual functions */
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
+# define png_strcpy strcpy
# define png_strlen strlen
# define png_memcmp memcmp /* SJT: added */
# define png_memcpy memcpy
/* End of memory model independent support */
/* Just a double check that someone hasn't tried to define something
- * contradictory.
+ * contradictory.
*/
#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
#undef PNG_ZBUF_SIZE
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