eBookReaderSwitch/mupdf/source/fitz/paint-glyph.h

375 lines
7.5 KiB
C

/*
This file is #included by draw-paint.c multiple times to
produce optimised plotters.
*/
#ifdef ALPHA
#define NAME alpha
#else
#define NAME solid
#endif
#ifdef DA
#define NAME2 _da
#else
#define NAME2
#endif
#ifdef EOP
#define NAME3 _op
#else
#define NAME3
#endif
#define FUNCTION_NAMER(NAME,N,NAME2,NAME3) fz_paint_glyph_##NAME##_##N##NAME2##NAME3
#define FUNCTION_NAME(NAME,N,NAME2,NAME3) FUNCTION_NAMER(NAME,N,NAME2,NAME3)
#ifdef EOP
#define IF_OVERPRINT_COMPONENT(k) if (fz_overprint_component(eop, k))
#else
#define IF_OVERPRINT_COMPONENT(k) if (1)
#endif
static inline void
FUNCTION_NAME(NAME,N,NAME2,NAME3)(const unsigned char * FZ_RESTRICT colorbv,
#ifndef N
const int n1,
#endif
int span, unsigned char * FZ_RESTRICT dp, const fz_glyph *glyph, int w, int h, int skip_x, int skip_y
#ifdef EOP
, const fz_overprint *eop
#endif
)
{
#ifdef N
const int n1 = N;
#endif
#ifdef DA
const int n = n1 + 1;
#else
const int n = n1;
#endif
#ifdef ALPHA
int sa = FZ_EXPAND(colorbv[n1]);
#else
#if defined(N) && N == 1 && defined(DA)
const uint16_t color = *(const uint16_t *)colorbv;
#elif defined(N) && N == 3 && defined(DA)
const uint32_t color = *(const uint32_t *)colorbv;
#elif defined(N) && N == 4 && !defined(DA)
const uint32_t color = *(const uint32_t *)colorbv;
#endif
#endif
TRACK_FN();
while (h--)
{
int skip_xx, ww, len, extend;
const unsigned char *runp;
unsigned char *ddp = dp;
int offset = ((int *)(glyph->data))[skip_y++];
if (offset >= 0)
{
int eol = 0;
runp = &glyph->data[offset];
extend = 0;
ww = w;
skip_xx = skip_x;
while (skip_xx)
{
int v = *runp++;
switch (v & 3)
{
case 0: /* Extend */
extend = v>>2;
len = 0;
break;
case 1: /* Transparent */
len = (v>>2) + 1 + (extend<<6);
extend = 0;
if (len > skip_xx)
{
len -= skip_xx;
goto transparent_run;
}
break;
case 2: /* Solid */
eol = v & 4;
len = (v>>3) + 1 + (extend<<5);
extend = 0;
if (len > skip_xx)
{
len -= skip_xx;
goto solid_run;
}
break;
default: /* Intermediate */
eol = v & 4;
len = (v>>3) + 1 + (extend<<5);
extend = 0;
if (len > skip_xx)
{
runp += skip_xx;
len -= skip_xx;
goto intermediate_run;
}
runp += len;
break;
}
if (eol)
{
ww = 0;
break;
}
skip_xx -= len;
}
while (ww > 0)
{
int v = *runp++;
switch(v & 3)
{
case 0: /* Extend */
extend = v>>2;
break;
case 1: /* Transparent */
len = (v>>2) + 1 + (extend<<6);
extend = 0;
transparent_run:
if (len > ww)
len = ww;
ww -= len;
ddp += len * n;
break;
case 2: /* Solid */
eol = v & 4;
len = (v>>3) + 1 + (extend<<5);
extend = 0;
solid_run:
if (len > ww)
len = ww;
ww -= len;
do
{
#ifdef ALPHA
#if defined(N) && N == 1
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], sa);
#ifdef DA
ddp[1] = FZ_BLEND(0xFF, ddp[1], sa);
ddp += 2;
#else
ddp++;
#endif
#elif defined(N) && N == 3
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], sa);
IF_OVERPRINT_COMPONENT(1)
ddp[1] = FZ_BLEND(colorbv[1], ddp[1], sa);
IF_OVERPRINT_COMPONENT(2)
ddp[2] = FZ_BLEND(colorbv[2], ddp[2], sa);
#ifdef DA
ddp[3] = FZ_BLEND(0xFF, ddp[3], sa);
ddp += 4;
#else
ddp += 3;
#endif
#elif defined(N) && N == 4
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], sa);
IF_OVERPRINT_COMPONENT(1)
ddp[1] = FZ_BLEND(colorbv[1], ddp[1], sa);
IF_OVERPRINT_COMPONENT(2)
ddp[2] = FZ_BLEND(colorbv[2], ddp[2], sa);
IF_OVERPRINT_COMPONENT(3)
ddp[3] = FZ_BLEND(colorbv[3], ddp[3], sa);
#ifdef DA
ddp[4] = FZ_BLEND(0xFF, ddp[4], sa);
ddp += 5;
#else
ddp += 4;
#endif
#else
int k = 0;
do
{
IF_OVERPRINT_COMPONENT(k)
*ddp = FZ_BLEND(colorbv[k], *ddp, sa);
k++;
ddp++;
}
while (k != n1);
#ifdef DA
*ddp = FZ_BLEND(0xFF, *ddp, sa);
ddp++;
#endif
#endif
#else
#if defined(N) && N == 1
#ifdef DA
#ifdef EOP
IF_OVERPRINT_COMPONENT(0)
ddp[0] = colorbv[0];
IF_OVERPRINT_COMPONENT(1)
*ddp[1] = colorbv[1];
#else
*(uint16_t *)ddp = color;
#endif
ddp += 2;
#else
*ddp++ = colorbv[0];
#endif
#elif defined(N) && N == 3
#ifdef DA
#ifdef EOP
IF_OVERPRINT_COMPONENT(0)
ddp[0] = colorbv[0];
IF_OVERPRINT_COMPONENT(1)
ddp[1] = colorbv[1];
IF_OVERPRINT_COMPONENT(2)
ddp[2] = colorbv[2];
IF_OVERPRINT_COMPONENT(3)
#else
*(uint32_t *)ddp = color;
#endif
ddp += 4;
#else
IF_OVERPRINT_COMPONENT(0)
ddp[0] = colorbv[0];
IF_OVERPRINT_COMPONENT(1)
ddp[1] = colorbv[1];
IF_OVERPRINT_COMPONENT(2)
ddp[2] = colorbv[2];
ddp += 3;
#endif
#elif defined(N) && N == 4
#ifdef DA
IF_OVERPRINT_COMPONENT(0)
ddp[0] = colorbv[0];
IF_OVERPRINT_COMPONENT(1)
ddp[1] = colorbv[1];
IF_OVERPRINT_COMPONENT(2)
ddp[2] = colorbv[2];
IF_OVERPRINT_COMPONENT(3)
ddp[3] = colorbv[3];
ddp[4] = colorbv[4];
ddp += 5;
#else
#ifdef EOP
IF_OVERPRINT_COMPONENT(0)
ddp[0] = colorbv[0];
IF_OVERPRINT_COMPONENT(1)
ddp[1] = colorbv[1];
IF_OVERPRINT_COMPONENT(2)
ddp[2] = colorbv[2];
ddp[3] = colorbv[3];
#else
*(uint32_t *)ddp = color;
#endif
ddp += 4;
#endif
#else
int k = 0;
do
{
IF_OVERPRINT_COMPONENT(k)
*ddp = colorbv[k];
k++;
ddp++;
}
while (k != n);
#endif
#endif
}
while (--len);
break;
default: /* Intermediate */
eol = v & 4;
len = (v>>3) + 1 + (extend<<5);
extend = 0;
intermediate_run:
if (len > ww)
len = ww;
ww -= len;
do
{
int k = 0;
int a = *runp++;
#ifdef ALPHA
a = FZ_COMBINE(sa, FZ_EXPAND(a));
#else
a = FZ_EXPAND(a);
#endif
(void)k;
#if defined(N) && N == 1
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], a);
#ifdef DA
ddp[1] = FZ_BLEND(0xFF, ddp[1], a);
ddp += 2;
#else
ddp++;
#endif
#elif defined(N) && N == 3
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], a);
IF_OVERPRINT_COMPONENT(1)
ddp[1] = FZ_BLEND(colorbv[1], ddp[1], a);
IF_OVERPRINT_COMPONENT(2)
ddp[2] = FZ_BLEND(colorbv[2], ddp[2], a);
#ifdef DA
ddp[3] = FZ_BLEND(0xFF, ddp[3], a);
ddp += 4;
#else
ddp += 3;
#endif
#elif defined(N) && N == 4
IF_OVERPRINT_COMPONENT(0)
ddp[0] = FZ_BLEND(colorbv[0], ddp[0], a);
IF_OVERPRINT_COMPONENT(1)
ddp[1] = FZ_BLEND(colorbv[1], ddp[1], a);
IF_OVERPRINT_COMPONENT(2)
ddp[2] = FZ_BLEND(colorbv[2], ddp[2], a);
IF_OVERPRINT_COMPONENT(3)
ddp[3] = FZ_BLEND(colorbv[3], ddp[3], a);
#ifdef DA
ddp[4] = FZ_BLEND(0xFF, ddp[4], a);
ddp += 5;
#else
ddp += 4;
#endif
#else
do
{
IF_OVERPRINT_COMPONENT(k)
*ddp = FZ_BLEND(colorbv[k], *ddp, a);
k++;
ddp++;
}
while (k != n1);
#ifdef DA
*ddp = FZ_BLEND(0xFF, *ddp, a);
ddp++;
#endif
#endif
}
while (--len);
break;
}
if (eol)
break;
}
}
dp += span;
}
}
#undef NAME
#undef ALPHA
#undef NAME2
#undef NAME3
#undef EOP
#undef DA
#undef N
#undef FUNCTION_NAMER
#undef FUNCTION_NAME
#undef IF_OVERPRINT_COMPONENT