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Diffstat (limited to 'vcl/source/filter/jpeg/jinclude.h')
-rw-r--r-- | vcl/source/filter/jpeg/jinclude.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/vcl/source/filter/jpeg/jinclude.h b/vcl/source/filter/jpeg/jinclude.h new file mode 100644 index 000000000..b863b11c4 --- /dev/null +++ b/vcl/source/filter/jpeg/jinclude.h @@ -0,0 +1,79 @@ +/* + * jinclude.h + * + * Copyright (C) 1991-1994, 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 file exists to provide a single place to fix any problems with + * including the wrong system include files. (Common problems are taken + * care of by the standard jconfig symbols, but on really weird systems + * you may have to edit this file.) + * + * NOTE: this file is NOT intended to be included by applications using the + * JPEG library. Most applications need only include jpeglib.h. + */ + +/* Include auto-config file to find out which system include files we need. */ + +#include <jconfig.h> /* auto configuration options */ +#define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */ + +/* + * We need the NULL macro and size_t typedef. + * On an ANSI-conforming system it is sufficient to include <stddef.h>. + * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to + * pull in <sys/types.h> as well. + * Note that the core JPEG library does not require <stdio.h>; + * only the default error handler and data source/destination modules do. + * But we must pull it in because of the references to FILE in jpeglib.h. + * You can remove those references if you want to compile without <stdio.h>. + */ + +#ifdef HAVE_STDDEF_H +#include <stddef.h> +#endif + +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif + +#ifdef NEED_SYS_TYPES_H +#include <sys/types.h> +#endif + +#include <stdio.h> + +/* + * We need memory copying and zeroing functions, plus strncpy(). + * 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 NEED_BSD_STRINGS + +#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 ANSI/SysV string lib */ + +#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 + +/* + * 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. + */ + +#define SIZEOF(object) ((size_t)sizeof(object)) |