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/* sfnt.h
Copyright 2002 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team <dvipdfmx@project.ktug.or.kr>
Copyright 2006-2008 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
LuaTeX is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
#ifndef _SFNT_H_
# define _SFNT_H_
# if HAVE_CONFIG_H
# include <w2c/config.h>
# endif /* HAVE_CONFIG_H_ */
/* Data Types as described in Apple's TTRefMan */
typedef unsigned char BYTE;
typedef signed char ICHAR;
typedef unsigned short USHORT;
typedef signed short SHORT;
typedef unsigned long ULONG;
typedef signed long LONG;
typedef unsigned long Fixed; /* 16.16-bit signed fixed-point number */
typedef short FWord;
typedef unsigned short uFWord;
typedef short F2Dot14; /* 16-bit signed fixed number with the low 14 bits representing fraction. */
struct sfnt_table {
/* table header */
char tag[4];
ULONG check_sum;
ULONG offset;
ULONG length;
char *data; /* table data */
};
# define SFNT_TABLE_REQUIRED (1 << 0)
struct sfnt_table_directory {
ULONG version; /* Fixed for Win */
USHORT num_tables;
USHORT search_range;
USHORT entry_selector;
USHORT range_shift;
USHORT num_kept_tables; /* number of kept tables */
char *flags; /* keep or omit */
struct sfnt_table *tables;
};
/* sfnt resource */
# define SFNT_TYPE_TRUETYPE (1 << 0)
# define SFNT_TYPE_OPENTYPE (1 << 1)
# define SFNT_TYPE_POSTSCRIPT (1 << 2)
# define SFNT_TYPE_TTC (1 << 4)
typedef struct {
int type;
struct sfnt_table_directory *directory;
# ifdef XETEX
FT_Face ft_face;
long loc;
# elif defined(pdfTeX)
BYTE *buffer;
long buflen;
long loc;
# else
FILE *stream;
# endif
} sfnt;
/* Convert sfnt "fixed" type to double */
# define fixed(a) ((double)((a)%0x10000L)/(double)(0x10000L) + \
(a)/0x10000L - (((a)/0x10000L > 0x7fffL) ? 0x10000L : 0))
# ifdef XETEX
UNSIGNED_BYTE ft_unsigned_byte(sfnt * f);
SIGNED_BYTE ft_signed_byte(sfnt * f);
UNSIGNED_PAIR ft_unsigned_pair(sfnt * f);
SIGNED_PAIR ft_signed_pair(sfnt * f);
UNSIGNED_QUAD ft_unsigned_quad(sfnt * f);
unsigned long ft_read(unsigned char *buf, unsigned long len, sfnt * f);
# define sfnt_get_byte(s) ((BYTE) ft_unsigned_byte(s))
# define sfnt_get_char(s) ((ICHAR) ft_signed_byte (s))
# define sfnt_get_ushort(s) ((USHORT) ft_unsigned_pair(s))
# define sfnt_get_short(s) ((SHORT) ft_signed_pair (s))
# define sfnt_get_ulong(s) ((ULONG) ft_unsigned_quad(s))
# define sfnt_get_long(s) ((LONG) ft_signed_quad (s))
# define sfnt_seek_set(s,o) (s)->loc = (o)
# define sfnt_read(b,l,s) ft_read((b), (l), (s))
# elif defined(pdfTeX)
BYTE get_unsigned_byte(sfnt * f);
ICHAR get_signed_byte(sfnt * f);
USHORT get_unsigned_pair(sfnt * f);
SHORT get_signed_pair(sfnt * f);
ULONG get_unsigned_quad(sfnt * f);
int do_sfnt_read(unsigned char *dest, int len, sfnt * f);
# define sfnt_get_byte(s) ((BYTE) get_unsigned_byte(s))
# define sfnt_get_char(s) ((ICHAR) get_signed_byte (s))
# define sfnt_get_ushort(s) ((USHORT) get_unsigned_pair(s))
# define sfnt_get_short(s) ((SHORT) get_signed_pair (s))
# define sfnt_get_ulong(s) ((ULONG) get_unsigned_quad(s))
# define sfnt_get_long(s) ((LONG) get_signed_quad (s))
# define sfnt_seek_set(s,o) (s)->loc = (o)
# define sfnt_read(b,l,s) do_sfnt_read((b), (l), (s))
# else
/* get_***_*** from numbers.h */
# define sfnt_get_byte(s) ((BYTE) get_unsigned_byte((s)->stream))
# define sfnt_get_char(s) ((ICHAR) get_signed_byte ((s)->stream))
# define sfnt_get_ushort(s) ((USHORT) get_unsigned_pair((s)->stream))
# define sfnt_get_short(s) ((SHORT) get_signed_pair ((s)->stream))
# define sfnt_get_ulong(s) ((ULONG) get_unsigned_quad((s)->stream))
# define sfnt_get_long(s) ((LONG) get_signed_quad ((s)->stream))
# define sfnt_seek_set(s,o) seek_absolute((s)->stream, (o))
# define sfnt_read(b,l,s) fread((b), 1, (l), (s)->stream)
# endif
extern int put_big_endian(void *s, LONG q, int n);
# define sfnt_put_ushort(s,v) put_big_endian((s), v, 2);
# define sfnt_put_short(s,v) put_big_endian((s), v, 2);
# define sfnt_put_ulong(s,v) put_big_endian((s), v, 4);
# define sfnt_put_long(s,v) put_big_endian((s), v, 4);
# ifdef XETEX
extern sfnt *sfnt_open(FT_Face face, int accept_types);
# elif defined(pdfTeX)
extern sfnt *sfnt_open(unsigned char *buffer, int buflen);
# else
extern sfnt *sfnt_open(FILE * fp);
# endif
extern void sfnt_close(sfnt * sfont);
/* table directory */
extern int sfnt_read_table_directory(sfnt * sfont, ULONG offset);
extern ULONG sfnt_find_table_len(sfnt * sfont, const char *tag);
extern ULONG sfnt_find_table_pos(sfnt * sfont, const char *tag);
extern ULONG sfnt_locate_table(sfnt * sfont, const char *tag);
extern void sfnt_set_table(sfnt * sfont,
const char *tag, void *data, ULONG length);
extern int sfnt_require_table(sfnt * sfont, const char *tag, int must_exist);
# ifdef pdfTeX
typedef struct {
ULONG length;
BYTE *data;
} pdf_obj;
# define ASSERT(a) assert(a)
# define RELEASE(a) free(a)
# define NEW(a,b) xmalloc((unsigned)((unsigned)(a)*sizeof(b)))
# define RENEW(a,b,c) xrealloc(a, (unsigned)((unsigned)(b)*sizeof(c)))
# endif
extern pdf_obj *sfnt_create_FontFile_stream(sfnt * sfont);
#endif /* _SFNT_H_ */
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