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Updated ssfn.h to latest

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bzt 2023-02-19 13:31:57 +01:00
parent 7798e28f98
commit 219fa5dff8
1 changed files with 27 additions and 44 deletions
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71
examples/0B_vecfont/ssfn.h
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@ -165,7 +165,7 @@ typedef struct {
} ssfn_buf_t;
/* cached bitmap struct */
#define SSFN_DATA_MAX ((SSFN_SIZE_MAX + 4 + (SSFN_SIZE_MAX + 4) / SSFN_ITALIC_DIV) << 8)
#define SSFN_DATA_MAX 65536
typedef struct {
uint16_t p; /* data buffer pitch, bytes per line */
uint8_t h; /* data buffer height */
@ -600,35 +600,26 @@ inline static int _ssfn__zhuffman_decode(_ssfn__zbuf *a, _ssfn__zhuffman *z)
static int _ssfn__zexpand(_ssfn__zbuf *z, char *zout)
{
char *q;
int cur, limit;
z->zout = zout;
cur = (int) (z->zout - z->zout_start);
limit = (int) (z->zout_end - z->zout_start);
if(limit == 8) {
if(z->zout_start[0] != 'S' || z->zout_start[1] != 'F' || z->zout_start[2] != 'N') return 0;
limit = *((uint32_t*)&z->zout_start[4]);
} else return 0;
unsigned int cur, limit;
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wuse-after-free"
#endif
z->zout = zout; cur = (unsigned int) (z->zout - z->zout_start); limit = (unsigned int) (z->zout_end - z->zout_start);
if(limit == 8) { if(z->zout_start[0] != 'S' || z->zout_start[1] != 'F' || z->zout_start[2] != 'N') return 0; limit = *((uint32_t*)&z->zout_start[4]); } else return 0;
q = (char *) SSFN_realloc(z->zout_start, limit);
if (q == NULL) return 0;
z->zout_start = q;
z->zout = q + cur;
z->zout_end = q + limit;
z->zout_start = q; z->zout = q + cur; z->zout_end = q + limit;
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
return 1;
}
static int _ssfn__zlength_base[31] = {
3,4,5,6,7,8,9,10,11,13,
15,17,19,23,27,31,35,43,51,59,
67,83,99,115,131,163,195,227,258,0,0 };
static int _ssfn__zlength_extra[31]=
{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 };
static int _ssfn__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,
257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
static int _ssfn__zdist_extra[32] =
{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
static int _ssfn__zlength_base[31]={3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0};
static int _ssfn__zlength_extra[31]={0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0};
static int _ssfn__zdist_base[32]={1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
static int _ssfn__zdist_extra[32]={0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
static int _ssfn__parse_huffman_block(_ssfn__zbuf *a)
{
@ -637,10 +628,7 @@ static int _ssfn__parse_huffman_block(_ssfn__zbuf *a)
int z = _ssfn__zhuffman_decode(a, &a->z_length);
if (z < 256) {
if (z < 0) return 0;
if (zout >= a->zout_end) {
if (!_ssfn__zexpand(a, zout)) return 0;
zout = a->zout;
}
if (zout >= a->zout_end) { if (!_ssfn__zexpand(a, zout)) return 0; zout = a->zout; }
*zout++ = (char) z;
} else {
unsigned char *p;
@ -659,12 +647,8 @@ static int _ssfn__parse_huffman_block(_ssfn__zbuf *a)
zout = a->zout;
}
p = (unsigned char *) (zout - dist);
if (dist == 1) {
unsigned char v = *p;
if (len) { do *zout++ = v; while (--len); }
} else {
if (len) { do *zout++ = *p++; while (--len); }
}
if (dist == 1) {unsigned char v = *p;if (len) { do *zout++ = v; while (--len); }
} else { if (len) { do *zout++ = *p++; while (--len); } }
}
}
}
@ -1063,6 +1047,7 @@ again: if(p >= SSFN_FAMILY_BYNAME) { n = 0; m = 4; } else n = m = p;
ci = (ctx->style & SSFN_STYLE_ITALIC) && !(SSFN_TYPE_STYLE(ctx->f->type) & SSFN_STYLE_ITALIC);
cb = (ctx->style & SSFN_STYLE_BOLD) && !(SSFN_TYPE_STYLE(ctx->f->type) & SSFN_STYLE_BOLD) ? (ctx->f->height+64)>>6 : 0;
w = (ctx->rc->w * h + ctx->f->height - 1) / ctx->f->height;
if(w > SSFN_SIZE_MAX) { h = h * SSFN_SIZE_MAX / w; w = SSFN_SIZE_MAX; }
p = w + (ci ? h / SSFN_ITALIC_DIV : 0) + cb;
/* failsafe, should never happen */
if(p * h >= SSFN_DATA_MAX) return SSFN_ERR_BADSIZE;
@ -1086,7 +1071,7 @@ again: if(p >= SSFN_FAMILY_BYNAME) { n = 0; m = 4; } else n = m = p;
x = (ctx->rc->x > 0 && ci ? (ctx->f->height - ctx->f->baseline) * h / SSFN_ITALIC_DIV / ctx->f->height : 0);
ctx->g->p = p;
ctx->g->h = h;
ctx->g->x = ctx->rc->x + x;
ctx->g->x = (ctx->rc->x + x > 255 ? 255 : ctx->rc->x + x);
ctx->g->y = ctx->rc->y;
ctx->g->o = (ctx->rc->t & 0x3F) + x;
SSFN_memset(&ctx->g->data, 0xFF, p * h);
@ -1448,8 +1433,9 @@ ssfn_buf_t *ssfn_text(ssfn_t *ctx, const char *str, unsigned int fg)
buf->fg = fg;
if(!*str || ssfn_bbox(ctx, str, (int*)&buf->w, (int*)&buf->h, (int*)&buf->x, (int*)&buf->y) != SSFN_OK)
return buf;
buf->ptr = (uint8_t*)SSFN_realloc(NULL, buf->w * buf->h * sizeof(uint32_t));
SSFN_memset(buf->ptr, 0, buf->w * buf->h * sizeof(uint32_t));
buf->p = buf->w * sizeof(uint32_t);
buf->ptr = (uint8_t*)SSFN_realloc(NULL, buf->p * buf->h);
SSFN_memset(buf->ptr, 0, buf->p * buf->h);
ctx->style &= ~SSFN_STYLE_A;
while((ret = ssfn_render(ctx, buf, str)) > 0)
str += ret;
@ -1536,11 +1522,8 @@ int ssfn_putc(uint32_t unicode)
for(p = o, l = 0; l < k; l++, p++, m <<= 1) {
if(m > 0x80) { frg++; m = 1; }
if(ssfn_dst.x + l >= 0 && (!w || ssfn_dst.x + l < w)) {
if(*frg & m) {
*p = ssfn_dst.fg;
} else if(ssfn_dst.bg) {
*p = ssfn_dst.bg;
}
if(*frg & m) *p = ssfn_dst.fg; else
if(ssfn_dst.bg) *p = ssfn_dst.bg;
}
}
}
@ -1612,5 +1595,5 @@ namespace SSFN {
#endif
}
#endif
/* */
/* */
#endif /* _SSFN_H_ */