mirror of
https://github.com/rsms/inter.git
synced 2024-11-23 11:43:47 +03:00
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*
|
|
* Copyright (C) 2013 Jan Bobrowski <jb@wizard.ae.krakow.pl>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2 as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include "ttf2woff.h"
|
|
|
|
#define MIN_COMPR 16
|
|
|
|
void gen_woff(struct buf *out, struct ttf *ttf)
|
|
{
|
|
unsigned woff_size, sfnt_size;
|
|
struct buf meta_comp={0};
|
|
u32 meta_off, priv_off;
|
|
u8 *buf, *p;
|
|
int i;
|
|
|
|
woff_size = 44 + 20*ttf->ntables;
|
|
sfnt_size = 12 + 16*ttf->ntables;
|
|
for(i=0; i<ttf->ntables; i++) {
|
|
struct table *t = ttf->tab_pos[i];
|
|
t->pos = woff_size; // remember offset in output file
|
|
t->zbuf = t->buf;
|
|
if(t->buf.len >= MIN_COMPR)
|
|
zlib_compress(&t->zbuf, &t->buf);
|
|
sfnt_size += t->buf.len+3 & ~3;
|
|
woff_size += t->zbuf.len+3 & ~3;
|
|
}
|
|
|
|
meta_off = 0;
|
|
if(ttf->woff_meta.len >= MIN_COMPR) {
|
|
meta_comp = ttf->woff_meta;
|
|
zlib_compress(&meta_comp, &ttf->woff_meta);
|
|
meta_off = woff_size;
|
|
woff_size += meta_comp.len;
|
|
}
|
|
|
|
priv_off = 0;
|
|
if(ttf->woff_priv.len) {
|
|
priv_off = woff_size;
|
|
woff_size += ttf->woff_priv.len;
|
|
}
|
|
|
|
buf = my_alloc(woff_size);
|
|
|
|
p32(buf, 0x774F4646);
|
|
p32(buf+4, ttf->flavor);
|
|
p32(buf+8, woff_size);
|
|
p16(buf+12, ttf->ntables);
|
|
p16(buf+14, 0);
|
|
p32(buf+16, sfnt_size);
|
|
p32(buf+20, 0); // version ?
|
|
p32(buf+24, meta_off);
|
|
p32(buf+28, meta_comp.len); // meta len
|
|
p32(buf+32, ttf->woff_meta.len); // meta orig len
|
|
p32(buf+36, priv_off);
|
|
p32(buf+40, ttf->woff_priv.len);
|
|
|
|
p = buf + 44;
|
|
for(i=0; i<ttf->ntables; i++) {
|
|
struct table *t = &ttf->tables[i];
|
|
p32(p, t->tag);
|
|
p32(p+4, t->pos);
|
|
p32(p+8, t->zbuf.len);
|
|
p32(p+12, t->buf.len);
|
|
p32(p+16, t->csum);
|
|
p += 20;
|
|
}
|
|
|
|
for(i=0; i<ttf->ntables; i++) {
|
|
struct table *t = ttf->tab_pos[i];
|
|
u32 sz = t->zbuf.len;
|
|
p = append(p, t->zbuf.ptr, sz);
|
|
while(sz&3) *p++=0, sz++;
|
|
// if(t->zbuf.ptr != t->buf.ptr)
|
|
// my_free(t->zbuf.ptr);
|
|
}
|
|
|
|
if(meta_comp.len)
|
|
p = append(p, meta_comp.ptr, meta_comp.len);
|
|
|
|
if(ttf->woff_priv.len)
|
|
p = append(p, ttf->woff_priv.ptr, ttf->woff_priv.len);
|
|
|
|
assert(p == buf+woff_size);
|
|
|
|
out->ptr = buf;
|
|
out->len = woff_size;
|
|
}
|