pngconf.h

hl2 source code. Do not use it illegal.

#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 */
#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
#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 */

#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

/* This adds extra functions in pngget.c for accessing data from the
 * info pointer (added in version 0.99)
 * png_get_image_width()
 * png_get_image_height()
 * png_get_bit_depth()
 * png_get_color_type()
 * png_get_compression_type()
 * png_get_filter_type()
 * png_get_interlace_type()
 * png_get_pixel_aspect_ratio()
 * png_get_pixels_per_meter()
 * png_get_x_offset_pixels()
 * png_get_y_offset_pixels()
 * png_get_x_offset_microns()
 * png_get_y_offset_microns()
 */
#ifndef PNG_NO_EASY_ACCESS
#define PNG_EASY_ACCESS_SUPPORTED
#endif

/* These are currently experimental features, define them if you want */

/* 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 */
/* some testing */
/*
#define PNG_READ_BIG_ENDIAN_SUPPORTED
*/

/* 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,
 * tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
 * a bit smaller.
 */

#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
    !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#endif
#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 */
#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 */
#if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED)
#include <time.h>
#endif

/* Some typedefs to get us started.  These should be safe on most of the
 * common platforms.  The typedefs should be at least as large as the
 * 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.  Likewise, for 64-bit systems, you may
 * want to have unsigned int for png_uint_32 instead of unsigned long.
 */

typedef unsigned long png_uint_32;
typedef long png_int_32;
typedef unsigned short png_uint_16;
typedef short png_int_16;
typedef unsigned char png_byte;

/* 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) */
typedef size_t png_size_t;

/* The following is needed for medium model support.  It cannot be in the
 * 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
 * have been made in zlib.  The USE_FAR_KEYWORD define triggers other
 * changes that are needed. (Tim Wegner)
 */

/* Separate compiler dependencies (problem here is that zlib.h always
   defines FAR. (SJT) */
#ifdef __BORLANDC__
#if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
#define LDATA 1
#else
#define LDATA 0
#endif

#if !defined(__WIN32__) && !defined(__FLAT__)
#define PNG_MAX_MALLOC_64K
#if (LDATA != 1)
#ifndef FAR
#define FAR __far
#endif
#define USE_FAR_KEYWORD
#endif   /* LDATA != 1 */

/* Possibly useful for moving data out of default segment.
 * Uncomment it if you want. Could also define FARDATA as
 * const if your compiler supports it. (SJT)
#  define FARDATA FAR
 */
#endif  /* __WIN32__, __FLAT__ */

#endif   /* __BORLANDC__ */


/* Suggest testing for specific compiler first before testing for
 * FAR.  The Watcom compiler defines both __MEDIUM__ and M_I86MM,
 * making reliance oncertain keywords suspect. (SJT)
 */

/* MSC Medium model */
#if defined(FAR)
#  if defined(M_I86MM)
#     define USE_FAR_KEYWORD
#     define FARDATA FAR
#     include <dos.h>
#  endif
#endif

/* SJT: default case */
#ifndef FAR
#   define FAR
#endif

/* At this point FAR is always defined */
#ifndef FARDATA
#define FARDATA
#endif

/* Add typedefs for pointers */
typedef void            FAR * png_voidp;
typedef png_byte        FAR * png_bytep;
typedef png_uint_32     FAR * png_uint_32p;
typedef png_int_32      FAR * png_int_32p;
typedef png_uint_16     FAR * png_uint_16p;
typedef png_int_16      FAR * png_int_16p;
typedef PNG_CONST char  FAR * png_const_charp;
typedef char            FAR * png_charp;
typedef double          FAR * png_doublep;

/* Pointers to pointers; i.e. arrays */
typedef png_byte        FAR * FAR * png_bytepp;
typedef png_uint_32     FAR * FAR * png_uint_32pp;
typedef png_int_32      FAR * FAR * png_int_32pp;
typedef png_uint_16     FAR * FAR * png_uint_16pp;
typedef png_int_16      FAR * FAR * png_int_16pp;
typedef PNG_CONST char  FAR * FAR * png_const_charpp;
typedef char            FAR * FAR * png_charpp;
typedef double          FAR * FAR * png_doublepp;

/* Pointers to pointers to pointers; i.e. pointer to array */
typedef char            FAR * FAR * FAR * png_charppp;

/* 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;

/* allow for compilation as dll under MS Windows */
#ifdef __WIN32DLL__
#define PNG_EXPORT(type,symbol) __declspec(dllexport) type symbol
#endif

/* allow for compilation as dll with BORLAND C++ 5.0 */
#if defined(__BORLANDC__) && defined(_Windows) && defined(__DLL__)
#   define PNG_EXPORT(type,symbol) type _export symbol
#endif

/* allow for compilation as shared lib under BeOS */
#ifdef __BEOSDLL__
#define PNG_EXPORT(type,symbol) __declspec(export) type symbol
#endif

#ifndef PNG_EXPORT
#define PNG_EXPORT(type,symbol) type symbol
#endif


/* User may want to use these so not in PNG_INTERNAL. Any library functions
 * that are passed far data must be model independent.
 */

#if defined(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_strlen _fstrlen
#   define png_memcmp _fmemcmp      /* SJT: added */
#   define png_memcpy _fmemcpy
#   define png_memset _fmemset
#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
#   define png_memset memset
#endif
/* End of memory model independent support */

/* Just a double check that someone hasn't tried to define something
 * contradictory.
 */
#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
#undef PNG_ZBUF_SIZE
#define PNG_ZBUF_SIZE 65536
#endif

#endif /* PNGCONF_H */