jas_icc.h

DIGITAL IMAGERY is pervasive in our world today. Consequently, standards for the efficient represen

#define	JAS_ICC_TAG_TECH		0x74656368 /* */
#define	JAS_ICC_TAG_UCRBG		0x62666420 /* */
#define	JAS_ICC_TAG_VIEWCONDDESC	0x76756564 /* */
#define	JAS_ICC_TAG_VIEWCOND		0x76696577 /* */

/* Type signatures. */
#define	JAS_ICC_TYPE_CRDINFO		0x63726469 /* CRD information */
#define	JAS_ICC_TYPE_CURV		0x63757276 /* curve */
#define	JAS_ICC_TYPE_DATA		0x64617461 /* data */
#define	JAS_ICC_TYPE_TIME		0x6474696d /* date/time */
#define	JAS_ICC_TYPE_DEVSET		0x64657673 /* device settings */
#define	JAS_ICC_TYPE_LUT16		0x6d667432 /* */
#define	JAS_ICC_TYPE_LUT8		0x6d667431 /* */
#define	JAS_ICC_TYPE_MEASURE		0x6d656173 /* */
#define	JAS_ICC_TYPE_NAMCOLR		0x6e636f6c /* */
#define	JAS_ICC_TYPE_NAMCOLR2		0x6e636c32 /* */
#define	JAS_ICC_TYPE_PROFSEQDESC	0x70736571 /* profile sequence description */
#define	JAS_ICC_TYPE_RESPCURVSET16	0x72637332 /* response curve set 16 */
#define	JAS_ICC_TYPE_SF32		0x73663332 /* signed 32-bit fixed-point */
#define	JAS_ICC_TYPE_SCRNG		0x7363726e /* screening */
#define	JAS_ICC_TYPE_SIG		0x73696720 /* signature */
#define	JAS_ICC_TYPE_TXTDESC		0x64657363 /* text description */
#define	JAS_ICC_TYPE_TXT		0x74657874 /* text */
#define	JAS_ICC_TYPE_UF32		0x75663332 /* unsigned 32-bit fixed-point */
#define	JAS_ICC_TYPE_UCRBG		0x62666420 /* */
#define	JAS_ICC_TYPE_UI16		0x75693136 /* */
#define	JAS_ICC_TYPE_UI32		0x75693332 /* */
#define	JAS_ICC_TYPE_UI8		0x75693038 /* */
#define	JAS_ICC_TYPE_UI64		0x75693634 /* */
#define	JAS_ICC_TYPE_VIEWCOND		0x76696577 /* */
#define	JAS_ICC_TYPE_XYZ		0x58595a20 /* XYZ */

typedef uint_fast8_t jas_iccuint8_t;
typedef uint_fast16_t jas_iccuint16_t;
typedef uint_fast32_t jas_iccuint32_t;
typedef int_fast32_t jas_iccsint32_t;
typedef int_fast32_t jas_iccs15fixed16_t;
typedef uint_fast32_t jas_iccu16fixed16_t;
typedef uint_fast64_t jas_iccuint64_t;
typedef uint_fast32_t jas_iccsig_t;

typedef jas_iccsig_t jas_icctagsig_t;
typedef jas_iccsig_t jas_icctagtype_t;
typedef jas_iccsig_t jas_iccattrname_t;

/* Date/time type. */
typedef struct {
	jas_iccuint16_t year;
	jas_iccuint16_t month;
	jas_iccuint16_t day;
	jas_iccuint16_t hour;
	jas_iccuint16_t min;
	jas_iccuint16_t sec;
} jas_icctime_t;

/* XYZ type. */
typedef struct {
	jas_iccs15fixed16_t x;
	jas_iccs15fixed16_t y;
	jas_iccs15fixed16_t z;
} jas_iccxyz_t;

/* Curve type. */
typedef struct {
	jas_iccuint32_t numents;
	jas_iccuint16_t *ents;
} jas_icccurv_t;

/* Text description type. */
typedef struct {
	jas_iccuint32_t asclen;
	char *ascdata; /* ASCII invariant description */
	jas_iccuint32_t uclangcode; /* Unicode language code */
	jas_iccuint32_t uclen; /* Unicode localizable description count */
	uchar *ucdata; /* Unicode localizable description */
	jas_iccuint16_t sccode; /* ScriptCode code */
	jas_iccuint8_t maclen; /* Localizable Macintosh description count */
	uchar macdata[69]; /* Localizable Macintosh description */
} jas_icctxtdesc_t;

/* Text type. */
typedef struct {
	char *string;	/* ASCII character string */
} jas_icctxt_t;

typedef struct {
	jas_iccuint8_t numinchans;
	jas_iccuint8_t numoutchans;
	jas_iccsint32_t e[3][3];
	jas_iccuint8_t clutlen;
	jas_iccuint8_t *clut;
	jas_iccuint16_t numintabents;
	jas_iccuint8_t **intabs;
	jas_iccuint8_t *intabsbuf;
	jas_iccuint16_t numouttabents;
	jas_iccuint8_t **outtabs;
	jas_iccuint8_t *outtabsbuf;
} jas_icclut8_t;

typedef struct {
	jas_iccuint8_t numinchans;
	jas_iccuint8_t numoutchans;
	jas_iccsint32_t e[3][3];
	jas_iccuint8_t clutlen;
	jas_iccuint16_t *clut;
	jas_iccuint16_t numintabents;
	jas_iccuint16_t **intabs;
	jas_iccuint16_t *intabsbuf;
	jas_iccuint16_t numouttabents;
	jas_iccuint16_t **outtabs;
	jas_iccuint16_t *outtabsbuf;
} jas_icclut16_t;

struct jas_iccattrval_s;

typedef struct {
	void (*destroy)(struct jas_iccattrval_s *);
	int (*copy)(struct jas_iccattrval_s *, struct jas_iccattrval_s *);
	int (*input)(struct jas_iccattrval_s *, jas_stream_t *, int);
	int (*output)(struct jas_iccattrval_s *, jas_stream_t *);
	int (*getsize)(struct jas_iccattrval_s *);
	void (*dump)(struct jas_iccattrval_s *, FILE *);
} jas_iccattrvalops_t;

/* Attribute value type (type and value information). */
typedef struct jas_iccattrval_s {
	int refcnt; /* reference count */
	jas_iccsig_t type; /* type */
	jas_iccattrvalops_t *ops; /* type-dependent operations */
	union {
		jas_iccxyz_t xyz;
		jas_icccurv_t curv;
		jas_icctxtdesc_t txtdesc;
		jas_icctxt_t txt;
		jas_icclut8_t lut8;
		jas_icclut16_t lut16;
	} data; /* value */
} jas_iccattrval_t;

/* Header type. */
typedef struct {
	jas_iccuint32_t size; /* profile size */
	jas_iccsig_t cmmtype; /* CMM type signature */
	jas_iccuint32_t version; /* profile version */
	jas_iccsig_t clas; /* profile/device class signature */
	jas_iccsig_t colorspc; /* color space of data */
	jas_iccsig_t refcolorspc; /* profile connection space */
	jas_icctime_t ctime; /* creation time */
	jas_iccsig_t magic; /* profile file signature */
	jas_iccsig_t platform; /* primary platform */
	jas_iccuint32_t flags; /* profile flags */
	jas_iccsig_t maker; /* device manufacturer signature */
	jas_iccsig_t model; /* device model signature */
	jas_iccuint64_t attr; /* device setup attributes */
	jas_iccsig_t intent; /* rendering intent */
	jas_iccxyz_t illum; /* illuminant */
	jas_iccsig_t creator; /* profile creator signature */
} jas_icchdr_t;

typedef struct {
	jas_iccsig_t name;
	jas_iccattrval_t *val;
} jas_iccattr_t;

typedef struct {
	int numattrs;
	int maxattrs;
	jas_iccattr_t *attrs;
} jas_iccattrtab_t;

typedef struct jas_icctagtabent_s {
	jas_iccuint32_t tag;
	jas_iccuint32_t off;
	jas_iccuint32_t len;
	void *data;
	struct jas_icctagtabent_s *first;
} jas_icctagtabent_t;

typedef struct {
	jas_iccuint32_t numents;
	jas_icctagtabent_t *ents;
} jas_icctagtab_t;

/* ICC profile type. */
typedef struct {
	jas_icchdr_t hdr;
	jas_icctagtab_t tagtab;
	jas_iccattrtab_t *attrtab;
} jas_iccprof_t;

typedef struct {
	jas_iccuint32_t type;
	jas_iccattrvalops_t ops;
} jas_iccattrvalinfo_t;

jas_iccprof_t *jas_iccprof_load(jas_stream_t *in);
int jas_iccprof_save(jas_iccprof_t *prof, jas_stream_t *out);
void jas_iccprof_destroy(jas_iccprof_t *prof);
jas_iccattrval_t *jas_iccprof_getattr(jas_iccprof_t *prof,
  jas_iccattrname_t name);
int jas_iccprof_setattr(jas_iccprof_t *prof, jas_iccattrname_t name,
  jas_iccattrval_t *val);
void jas_iccprof_dump(jas_iccprof_t *prof, FILE *out);
jas_iccprof_t *jas_iccprof_copy(jas_iccprof_t *prof);
int jas_iccprof_gethdr(jas_iccprof_t *prof, jas_icchdr_t *hdr);
int jas_iccprof_sethdr(jas_iccprof_t *prof, jas_icchdr_t *hdr);

void jas_iccattrval_destroy(jas_iccattrval_t *attrval);
void jas_iccattrval_dump(jas_iccattrval_t *attrval, FILE *out);
int jas_iccattrval_allowmodify(jas_iccattrval_t **attrval);
jas_iccattrval_t *jas_iccattrval_clone(jas_iccattrval_t *attrval);
jas_iccattrval_t *jas_iccattrval_create(jas_iccuint32_t type);

void jas_iccattrtab_dump(jas_iccattrtab_t *attrtab, FILE *out);

extern uchar jas_iccprofdata_srgb[];
extern int jas_iccprofdata_srgblen;
extern uchar jas_iccprofdata_sgray[];
extern int jas_iccprofdata_sgraylen;
jas_iccprof_t *jas_iccprof_createfrombuf(uchar *buf, int len);
jas_iccprof_t *jas_iccprof_createfromclrspc(int clrspc);

#ifdef __cplusplus
}
#endif

#endif