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TIFF wrapper: to access lib methods [message #32278]

Thu, 05 May 2011 21:11

tojocky
Messages: 607
Registered: April 2008
Location: UK

Contributor

Hello All,

I propose to add in <plugin/tif/tif.h>


#define HAVE_INT8
#define HAVE_INT16
#define HAVE_INT32
#define HAVE_UINT8
#define HAVE_UINT16
#define HAVE_UINT32
#define	int8 signed char
#define	uint8 unsigned char
#define	int16 short
#define	uint16 unsigned short
#if !defined(PLATFORM_WIN32)
	#define	int32 int
	#define	uint32 unsigned int
#else
	#define	int32 long
	#define	uint32 unsigned long

#endif

#include <plugin/tif/lib/tiff.h>
#include <plugin/tif/lib/tiffio.h>
#include <plugin/tif/lib/tiffiop.h>
/*
#undef int8
#undef uint8
#undef int16
#undef uint16
#undef int32
#undef uint32
*/
#undef HAVE_INT8
#undef HAVE_INT16
#undef HAVE_INT32
#undef HAVE_UINT8
#undef HAVE_UINT16
#undef HAVE_UINT32

in tifupp.cpp to remove include files of library and add:

#define tif_int32 int32
#define tif_uint32 uint32

in file <plugin/tif/lib/tif.h> to change the code in:


#ifndef HAVE_INT8
typedef	signed char int8;	/* NB: non-ANSI compilers may not grok */
#endif
#ifndef HAVE_UINT8
typedef	unsigned char uint8;
#endif
#ifndef HAVE_INT16
typedef	short int16;
#endif
#ifndef HAVE_UINT16
typedef	unsigned short uint16;	/* sizeof (uint16) must == 2 */
#endif
#if SIZEOF_INT == 4
#ifndef HAVE_INT32
typedef	int int32;
#endif
#ifndef HAVE_UINT32
typedef	unsigned int uint32;	/* sizeof (uint32) must == 4 */
#endif
#elif SIZEOF_LONG == 4
#ifndef HAVE_INT32
typedef	long int32;
#endif
#ifndef HAVE_UINT32
typedef	unsigned long uint32;	/* sizeof (uint32) must == 4 */
#endif
#endif

This realization gives the possibility to access core tif functions.

Motivation: I used this to access 16 bit image.

Any advice are welcome.

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