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- /*
- * jinclude.h
- *
- * Copyright (C) 1991, 1992, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This is the central file that's #include'd by all the JPEG .c files.
- * Its purpose is to provide a single place to fix any problems with
- * including the wrong system include files.
- * You can edit these declarations if you use a system with nonstandard
- * system include files.
- */
-
-
- /*
- * Normally the __STDC__ macro can be taken as indicating that the system
- * include files conform to the ANSI C standard. However, if you are running
- * GCC on a machine with non-ANSI system include files, that is not the case.
- * In that case change the following, or add -DNONANSI_INCLUDES to your CFLAGS.
- */
-
- #if defined __STDC__ & !defined NONANSI_INCLUDES
- #define INCLUDES_ARE_ANSI /* this is what's tested before including */
- #endif
-
- /*
- * <stdio.h> is included to get the FILE typedef and NULL macro.
- * Note that the core portable-JPEG files do not actually do any I/O
- * using the stdio library; only the user interface, error handler,
- * and file reading/writing modules invoke any stdio functions.
- * (Well, we did cheat a bit in jmemmgr.c, but only if MEM_STATS is defined.)
- */
-
- #include <stdio.h>
-
- /*
- * We need the size_t typedef, which defines the parameter type of malloc().
- * In an ANSI-conforming implementation this is provided by <stdio.h>,
- * but on non-ANSI systems it's more likely to be in <sys/types.h>.
- * On some not-quite-ANSI systems you may find it in <stddef.h>.
- */
-
- #ifndef INCLUDES_ARE_ANSI /* shouldn't need this if ANSI C */
- #include <sys/types.h>
- #endif
- #ifdef __SASC /* Amiga SAS C provides it in stddef.h. */
- #include <stddef.h>
- #endif
-
- /*
- * In ANSI C, and indeed any rational implementation, size_t is also the
- * type returned by sizeof(). However, it seems there are some irrational
- * implementations out there, in which sizeof() returns an int even though
- * size_t is defined as long or unsigned long. To ensure consistent results
- * we always use this SIZEOF() macro in place of using sizeof() directly.
- */
-
- #undef SIZEOF /* in case you included X11/xmd.h */
- #define SIZEOF(object) ((size_t) sizeof(object))
-
- /*
- * fread() and fwrite() are always invoked through these macros.
- * On some systems you may need to twiddle the argument casts.
- * CAUTION: argument order is different from underlying functions!
- */
-
- #ifndef STREAM_IMAGE
- #define JFREAD(file,buf,sizeofbuf) \
- ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
- #else
- #define JFREAD(fp,buf,bsize) \
- (*cinfo->img->read)(buf, 1, bsize, fp)
- #endif
- #define JFWRITE(file,buf,sizeofbuf) \
- ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
-
- /*
- * We need the memcpy() and strcmp() functions, plus memory zeroing.
- * ANSI and System V implementations declare these in <string.h>.
- * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().
- * Some systems may declare memset and memcpy in <memory.h>.
- *
- * NOTE: we assume the size parameters to these functions are of type size_t.
- * Change the casts in these macros if not!
- */
-
- #ifdef INCLUDES_ARE_ANSI
- #include <string.h>
- #define MEMZERO(target,size) memset((void *)(target), 0, (size_t)(size))
- #define MEMCOPY(dest,src,size) memcpy((void *)(dest), (const void *)(src), (size_t)(size))
- #else /* not ANSI */
- #ifdef BSD
- #include <strings.h>
- #define MEMZERO(target,size) bzero((void *)(target), (size_t)(size))
- #define MEMCOPY(dest,src,size) bcopy((const void *)(src), (void *)(dest), (size_t)(size))
- #else /* not BSD, assume Sys V or compatible */
- #include <string.h>
- #define MEMZERO(target,size) memset((void *)(target), 0, (size_t)(size))
- #define MEMCOPY(dest,src,size) memcpy((void *)(dest), (const void *)(src), (size_t)(size))
- #endif /* BSD */
- #endif /* ANSI */
-
-
- /* Now include the portable JPEG definition files. */
-
- #include "header.def"
- #include "imagedef.h"
-
- #include "jconfig.h"
-
- #include "jpegdata.h"
- /*
- * This list defines the known output image formats
- * (not all of which need be supported by a given version).
- * You can change the default output format by defining DEFAULT_FMT;
- * indeed, you had better do so if you undefine PPM_SUPPORTED.
- */
-
- typedef enum {
- FMT_GIF, /* GIF format */
- FMT_PPM, /* PPM/PGM (PBMPLUS formats) */
- FMT_RLE, /* RLE format */
- FMT_TARGA, /* Targa format */
- FMT_TIFF, /* TIFF format */
- FMT_DEFAULT
- } IMAGE_FORMATS;
-
- extern struct Decompress_info_struct dinfo;
- extern struct External_methods_struct e_methods;
- extern struct Decompress_methods_struct dc_methods;
-