1 /* 2 * jinclude.h 3 * 4 * Copyright (C) 1991-1994, Thomas G. Lane. 5 * This file is part of the Independent JPEG Group's software. 6 * For conditions of distribution and use, see the accompanying README file. 7 * 8 * This file exists to provide a single place to fix any problems with 9 * including the wrong system include files. (Common problems are taken 10 * care of by the standard jconfig symbols, but on really weird systems 11 * you may have to edit this file.) 12 * 13 * NOTE: this file is NOT intended to be included by applications using the 14 * JPEG library. Most applications need only include jpeglib.h. 15 */ 16 17 18 /* Include auto-config file to find out which system include files we need. */ 19 20 #include "jconfig.h" /* auto configuration options */ 21 #define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */ 22 23 #include "core/fxcrt/fx_system.h" 24 25 /* 26 * We need the NULL macro and size_t typedef. 27 * On an ANSI-conforming system it is sufficient to include <stddef.h>. 28 * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to 29 * pull in <sys/types.h> as well. 30 * Note that the core JPEG library does not require <stdio.h>; 31 * only the default error handler and data source/destination modules do. 32 * But we must pull it in because of the references to FILE in jpeglib.h. 33 * You can remove those references if you want to compile without <stdio.h>. 34 */ 35 36 #ifdef _DEBUG 37 #define CRTDBG_MAP_ALLOC 38 //#include <stdlib.h> 39 //#include <crtdbg.h> 40 #endif 41 42 #ifdef HAVE_STDDEF_H 43 #include <stddef.h> 44 #endif 45 46 #ifdef HAVE_STDLIB_H 47 //#include <stdlib.h> 48 #endif 49 50 #ifdef NEED_SYS_TYPES_H 51 #include <sys/types.h> 52 #endif 53 54 #ifndef FAR 55 #define FAR 56 #endif 57 58 //#include <stdio.h> 59 60 /* 61 * We need memory copying and zeroing functions, plus strncpy(). 62 * ANSI and System V implementations declare these in <string.h>. 63 * BSD doesn't have the mem() functions, but it does have bcopy()/bzero(). 64 * Some systems may declare memset and memcpy in <memory.h>. 65 * 66 * NOTE: we assume the size parameters to these functions are of type size_t. 67 * Change the casts in these macros if not! 68 */ 69 70 #ifdef NEED_BSD_STRINGS 71 72 //#include <strings.h> 73 #define MEMZERO(target,size) bzero((void *)(target), (size_t)(size)) 74 #define MEMCOPY(dest,src,size) bcopy((const void *)(src), (void *)(dest), (size_t)(size)) 75 76 #else /* not BSD, assume ANSI/SysV string lib */ 77 78 //#include <string.h> 79 #define MEMZERO(target,size) FXSYS_memset((void *)(target), 0, (size_t)(size)) 80 #define MEMCOPY(dest,src,size) FXSYS_memcpy((void *)(dest), (const void *)(src), (size_t)(size)) 81 82 #endif 83 84 /* 85 * In ANSI C, and indeed any rational implementation, size_t is also the 86 * type returned by sizeof(). However, it seems there are some irrational 87 * implementations out there, in which sizeof() returns an int even though 88 * size_t is defined as long or unsigned long. To ensure consistent results 89 * we always use this SIZEOF() macro in place of using sizeof() directly. 90 */ 91 92 #define SIZEOF(object) ((size_t) sizeof(object)) 93 94 /* 95 * The modules that use fread() and fwrite() always invoke them through 96 * these macros. On some systems you may need to twiddle the argument casts. 97 * CAUTION: argument order is different from underlying functions! 98 */ 99 100 #define JFREAD(file,buf,sizeofbuf) \ 101 ((size_t) FXSYS_fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) 102 #define JFWRITE(file,buf,sizeofbuf) \ 103 ((size_t) FXSYS_fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) 104
