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