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 file. 9 * 10 * This file exists to provide a single place to fix any problems with 11 * including the wrong system include files. (Common problems are taken 12 * care of by the standard jconfig symbols, but on really weird systems 13 * you may have to edit this file.) 14 * 15 * NOTE: this file is NOT intended to be included by applications using the 16 * JPEG library. Most applications need only include jpeglib.h. 17 */ 18 19 20 /* Include auto-config file to find out which system include files we need. */ 21 22 #include "jconfig.h" /* auto configuration options */ 23 #define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */ 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 HAVE_STDDEF_H 37 #include <stddef.h> 38 #endif 39 40 #ifdef HAVE_STDLIB_H 41 #include <stdlib.h> 42 #endif 43 44 #ifdef NEED_SYS_TYPES_H 45 #include <sys/types.h> 46 #endif 47 48 #include <stdio.h> 49 50 /* 51 * We need memory copying and zeroing functions, plus strncpy(). 52 * ANSI and System V implementations declare these in <string.h>. 53 * BSD doesn't have the mem() functions, but it does have bcopy()/bzero(). 54 * Some systems may declare memset and memcpy in <memory.h>. 55 * 56 * NOTE: we assume the size parameters to these functions are of type size_t. 57 * Change the casts in these macros if not! 58 */ 59 60 #ifdef NEED_BSD_STRINGS 61 62 #include <strings.h> 63 #define MEMZERO(target,size) bzero((void *)(target), (size_t)(size)) 64 #define MEMCOPY(dest,src,size) bcopy((const void *)(src), (void *)(dest), (size_t)(size)) 65 66 #else /* not BSD, assume ANSI/SysV string lib */ 67 68 #include <string.h> 69 #define MEMZERO(target,size) memset((void *)(target), 0, (size_t)(size)) 70 #define MEMCOPY(dest,src,size) memcpy((void *)(dest), (const void *)(src), (size_t)(size)) 71 72 #endif 73 74 /* 75 * The modules that use fread() and fwrite() always invoke them through 76 * these macros. On some systems you may need to twiddle the argument casts. 77 * CAUTION: argument order is different from underlying functions! 78 */ 79 80 #define JFREAD(file,buf,sizeofbuf) \ 81 ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) 82 #define JFWRITE(file,buf,sizeofbuf) \ 83 ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) 84
