| /* |
| * 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. |
| */ |
| |
| #ifdef __STDC__ |
| #ifndef NONANSI_INCLUDES |
| #define INCLUDES_ARE_ANSI /* this is what's tested before including */ |
| #endif |
| #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! |
| */ |
| |
| #define JFREAD(file,buf,sizeofbuf) \ |
| ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) |
| #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(). |
| * NOTE: we assume the size parameters to these functions are of type size_t. |
| * Insert casts in these macros if not! |
| */ |
| |
| #ifdef INCLUDES_ARE_ANSI |
| #include <string.h> |
| #define MEMZERO(voidptr,size) memset((voidptr), 0, (size)) |
| #else /* not ANSI */ |
| #ifdef BSD |
| #include <strings.h> |
| #define MEMZERO(voidptr,size) bzero((voidptr), (size)) |
| #define memcpy(dest,src,size) bcopy((src), (dest), (size)) |
| #else /* not BSD, assume Sys V or compatible */ |
| #include <string.h> |
| #define MEMZERO(voidptr,size) memset((voidptr), 0, (size)) |
| #endif /* BSD */ |
| #endif /* ANSI */ |
| |
| |
| /* Now include the portable JPEG definition files. */ |
| |
| #include "jconfig.h" |
| |
| #include "jpegdata.h" |