forked from KolibriOS/kolibrios
487 lines
9.3 KiB
C
487 lines
9.3 KiB
C
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#include "fitz.h"
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typedef unsigned char byte;
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/* These C implementations use SWAR (SIMD-within-a-register) techniques. */
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#if 0 /* TODO: move into porterduff.c functions */
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#define MASK 0xFF00FF00;
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static void
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path_w4i1o4_32bit(byte *rgba,
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byte * restrict src, byte cov, int len, byte * restrict dst)
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{
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/* COLOR * coverage + DST * (256-coverage) = (COLOR - DST)*coverage + DST*256 */
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unsigned int *dst32 = (unsigned int *)(void *)dst;
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int alpha = rgba[3];
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unsigned int rb = rgba[0] | (rgba[2] << 16);
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unsigned int ga = rgba[1] | 0xFF0000;
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if (alpha == 0)
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return;
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if (alpha != 255)
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{
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alpha += alpha>>7; /* alpha is now in the 0...256 range */
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while (len--)
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{
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unsigned int ca, drb, dga, crb, cga;
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cov += *src; *src++ = 0;
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ca = cov + (cov>>7); /* ca is in 0...256 range */
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ca = (ca*alpha)>>8; /* ca is is in 0...256 range */
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drb = *dst32++;
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if (ca != 0)
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{
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dga = drb & MASK;
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drb = (drb<<8) & MASK;
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cga = ga - (dga>>8);
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crb = rb - (drb>>8);
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dga += cga * ca;
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drb += crb * ca;
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dga &= MASK;
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drb &= MASK;
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drb = dga | (drb>>8);
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dst32[-1] = drb;
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}
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}
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}
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else
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{
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while (len--)
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{
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unsigned int ca, drb, dga, crb, cga;
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cov += *src; *src++ = 0;
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ca = cov + (cov>>7); /* ca is in 0...256 range */
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drb = *dst32++;
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if (ca == 0)
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continue;
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if (ca == 255)
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{
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drb = (ga<<8) | rb;
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}
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else
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{
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dga = drb & MASK;
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drb = (drb<<8) & MASK;
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cga = ga - (dga>>8);
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crb = rb - (drb>>8);
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dga += cga * ca;
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drb += crb * ca;
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dga &= MASK;
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drb &= MASK;
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drb = dga |(drb>>8);
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}
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dst32[-1] = drb;
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}
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}
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}
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static void
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text_w4i1o4_32bit(byte *rgba,
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byte * restrict src, int srcw,
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byte * restrict dst, int dstw, int w0, int h)
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{
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unsigned int *dst32 = (unsigned int *)(void *)dst;
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unsigned int alpha = rgba[3];
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unsigned int rb = rgba[0] | (rgba[2] << 16);
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unsigned int ga = rgba[1] | 0xFF0000;
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if (alpha == 0)
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return;
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srcw -= w0;
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dstw = (dstw>>2)-w0;
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if (alpha != 255)
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{
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alpha += alpha>>7; /* alpha is now in the 0...256 range */
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while (h--)
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{
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int w = w0;
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while (w--)
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{
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unsigned int ca, drb, dga, crb, cga;
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ca = *src++;
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drb = *dst32++;
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ca += ca>>7;
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ca = (ca*alpha)>>8;
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if (ca == 0)
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continue;
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dga = drb & MASK;
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drb = (drb<<8) & MASK;
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cga = ga - (dga>>8);
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crb = rb - (drb>>8);
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dga += cga * ca;
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drb += crb * ca;
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dga &= MASK;
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drb &= MASK;
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drb = dga | (drb>>8);
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dst32[-1] = drb;
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}
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src += srcw;
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dst32 += dstw;
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}
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}
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else
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{
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while (h--)
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{
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int w = w0;
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while (w--)
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{
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unsigned int ca, drb, dga, crb, cga;
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ca = *src++;
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drb = *dst32++;
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ca += ca>>7;
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if (ca == 0)
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continue;
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dga = drb & MASK;
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drb = (drb<<8) & MASK;
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cga = ga - (dga>>8);
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crb = rb - (drb>>8);
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dga += cga * ca;
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drb += crb * ca;
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dga &= MASK;
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drb &= MASK;
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drb = dga | (drb>>8);
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dst32[-1] = drb;
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}
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src += srcw;
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dst32 += dstw;
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}
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}
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}
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static void
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img_4o4_32bit(byte * restrict src, byte cov, int len, byte * restrict dst,
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fz_pixmap *image, int u, int v, int fa, int fb)
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{
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unsigned int *dst32 = (unsigned int *)(void *)dst;
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unsigned int *samples = (unsigned int *)(void *)image->samples;
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int w = image->w;
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int h = image->h-1;
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while (len--)
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{
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unsigned int a, a1, d, d1;
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int sa;
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cov += *src; *src = 0; src++;
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/* (a,a1) = sampleargb(samples, w, h, u, v, argb); */
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{
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int ui, ui1, vi, vi1, ud, vd;
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unsigned int b, b1, c, c1;
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ui1 = 1;
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ui = u >> 16;
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if (ui < 0)
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{
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ui = 0;
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ui1 = 0;
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}
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else if (ui >= w-1)
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{
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ui = w-1;
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ui1 = 0;
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}
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vi1 = w;
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vi = v >> 16;
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if (vi < 0)
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{
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vi = 0;
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vi1 = 0;
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}
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else if (vi >= h)
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{
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vi = h;
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vi1 = 0;
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}
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ui += vi*w;
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a = samples[ui];
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b = samples[ui + ui1];
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c = samples[ui + vi1];
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d = samples[ui + ui1 + vi1];
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ud = (u>>8) & 0xFF;
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vd = (v>>8) & 0xFF;
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ud = FZ_EXPAND(ud);
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vd = FZ_EXPAND(vd);
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/* (a,a1) = blend(a,b,ud) */
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a1 = a & MASK;
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a = (a<<8) & MASK;
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b1 = (b>>8) & ~MASK;
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b = b & ~MASK;
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a = ((b -(a >>8)) * ud + a ) & MASK;
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a1 = ((b1-(a1>>8)) * ud + a1) & MASK;
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/* (c,c1) = blend(c,d,ud) */
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c1 = c & MASK;
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c = (c<<8) & MASK;
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d1 = (d>>8) & ~MASK;
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d = d & ~MASK;
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c = ((d -(c >>8)) * ud + c ) & MASK;
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c1 = ((d1-(c1>>8)) * ud + c1) & MASK;
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/* (a,a1) = blend((a,a1),(c,c1),vd) */
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a = (((c >>8)-(a >>8)) * vd + a ) & MASK;
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a1 = (((c1>>8)-(a1>>8)) * vd + a1) & MASK;
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}
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sa = (a1>>24);
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sa = FZ_COMBINE(FZ_EXPAND(sa), FZ_EXPAND(cov));
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a1 |= 0xFF000000;
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d = *dst32++;
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d1 = d & MASK;
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d = (d<<8) & MASK;
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a = (((a >>8)-(d >>8)) * sa + d ) & MASK;
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a1 = (((a1>>8)-(d1>>8)) * sa + d1) & MASK;
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dst32[-1] = (a>>8) | a1;
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u += fa;
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v += fb;
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}
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}
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static void
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img_w4i1o4_32bit(byte *rgba, byte * restrict src, byte cov, int len,
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byte * restrict dst, fz_pixmap *image, int u, int v, int fa, int fb)
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{
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byte *samples = image->samples;
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int w = image->w;
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int h = image->h-1;
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int alpha = FZ_EXPAND(rgba[3]);
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unsigned int rb = rgba[0] | (rgba[2] << 16);
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unsigned int ga = rgba[1] | 0xFF0000;
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unsigned int *dst32 = (unsigned int *)(void *)dst;
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if (alpha == 0)
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return;
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if (alpha != 256)
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{
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while (len--)
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{
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unsigned int ca, drb, dga, crb, cga;
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unsigned int a, b;
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cov += *src; *src = 0; src++;
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drb = *dst32++;
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ca = FZ_COMBINE(FZ_EXPAND(cov), alpha);
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if (ca != 0)
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{
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int ui, ui1, vi, vi1, ud, vd;
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/* a = samplemask(samples, w, h, u, v); */
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ui1 = 1;
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ui = u >> 16;
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if (ui < 0)
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{
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ui = 0;
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ui1 = 0;
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}
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else if (ui >= w-1)
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{
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ui = w-1;
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ui1 = 0;
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}
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vi1 = w;
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vi = v >> 16;
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if (vi < 0)
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{
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vi = 0;
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vi1 = 0;
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}
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else if (vi >= h)
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{
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vi = h;
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vi1 = 0;
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}
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ui += vi*w;
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a = samples[ui];
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b = samples[ui + ui1];
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a |= samples[ui + vi1]<<16;
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b |= samples[ui + ui1 + vi1]<<16;
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ud = (u>>8) & 0xFF;
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vd = (v>>8) & 0xFF;
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ud = FZ_EXPAND(ud);
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vd = FZ_EXPAND(vd);
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/* a = blend(a,b,ud) */
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a = ((b-a) * ud + (a<<8)) & MASK;
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/* a = blend(a,a>>16,vd) */
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a = (((a>>24)-(a>>8)) * vd + a);
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a = (a>>8) & 0xFF;
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ca = FZ_COMBINE(ca, FZ_EXPAND(a));
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}
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if (ca != 0)
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{
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dga = drb & MASK;
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drb = (drb<<8) & MASK;
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cga = ga - (dga>>8);
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crb = rb - (drb>>8);
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dga += cga * ca;
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drb += crb * ca;
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dga &= MASK;
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drb &= MASK;
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drb = dga | (drb>>8);
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dst32[-1] = drb;
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}
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u += fa;
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v += fb;
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}
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}
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else
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{
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while (len--)
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{
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unsigned int ca, drb, dga, crb, cga;
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unsigned int a, b;
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cov += *src; *src = 0; src++;
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drb = *dst32++;
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if (cov != 0)
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{
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int ui, ui1, vi, vi1, ud, vd;
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/* a = samplemask(samples, w, h, u, v); */
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ui1 = 1;
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ui = u >> 16;
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if (ui < 0)
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{
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ui = 0;
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ui1 = 0;
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}
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else if (ui >= w-1)
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{
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ui = w-1;
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ui1 = 0;
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}
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vi1 = w;
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vi = v >> 16;
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if (vi < 0)
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{
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vi = 0;
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vi1 = 0;
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}
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else if (vi >= h)
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{
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vi = h;
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vi1 = 0;
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}
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ui += vi*w;
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a = samples[ui];
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b = samples[ui + ui1];
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a |= samples[ui + vi1]<<16;
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b |= samples[ui + ui1 + vi1]<<16;
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ud = (u>>8) & 0xFF;
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vd = (v>>8) & 0xFF;
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ud = FZ_EXPAND(ud);
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vd = FZ_EXPAND(vd);
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/* a = blend(a,b,ud) */
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a = ((b-a) * ud + (a<<8)) & MASK;
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/* a = blend(a,a>>16,vd) */
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a = (((a>>24)-(a>>8)) * vd + a);
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a = (a>>8) & 0xFF;
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ca = FZ_COMBINE(FZ_EXPAND(cov),FZ_EXPAND(a));
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if (ca != 0)
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{
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if (ca == 256)
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{
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drb = (ga<<8) | rb;
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}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dga = drb & MASK;
|
||
|
|
drb = (drb<<8) & MASK;
|
||
|
|
cga = ga - (dga>>8);
|
||
|
|
crb = rb - (drb>>8);
|
||
|
|
dga += cga * ca;
|
||
|
|
drb += crb * ca;
|
||
|
|
dga &= MASK;
|
||
|
|
drb &= MASK;
|
||
|
|
drb = dga | (drb>>8);
|
||
|
|
}
|
||
|
|
dst32[-1] = drb;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
u += fa;
|
||
|
|
v += fb;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
img_1o1_32bit(byte * restrict src, byte cov, int len, byte * restrict dst,
|
||
|
|
fz_pixmap *image, int u, int v, int fa, int fb)
|
||
|
|
{
|
||
|
|
byte *samples = image->samples;
|
||
|
|
int w = image->w;
|
||
|
|
int h = image->h-1;
|
||
|
|
|
||
|
|
while (len--)
|
||
|
|
{
|
||
|
|
unsigned int a, b;
|
||
|
|
cov += *src; *src = 0; src++;
|
||
|
|
if (cov != 0)
|
||
|
|
{
|
||
|
|
int ui, ui1, vi, vi1, ud, vd;
|
||
|
|
/* sa = samplemask(samples, w, h, u, v); */
|
||
|
|
ui1 = 1;
|
||
|
|
ui = u >> 16;
|
||
|
|
if (ui < 0)
|
||
|
|
{
|
||
|
|
ui = 0;
|
||
|
|
ui1 = 0;
|
||
|
|
}
|
||
|
|
else if (ui >= w-1)
|
||
|
|
{
|
||
|
|
ui = w-1;
|
||
|
|
ui1 = 0;
|
||
|
|
}
|
||
|
|
vi1 = w;
|
||
|
|
vi = v >> 16;
|
||
|
|
if (vi < 0)
|
||
|
|
{
|
||
|
|
vi = 0;
|
||
|
|
vi1 = 0;
|
||
|
|
}
|
||
|
|
else if (vi >= h)
|
||
|
|
{
|
||
|
|
vi = h;
|
||
|
|
vi1 = 0;
|
||
|
|
}
|
||
|
|
ui += vi*w;
|
||
|
|
a = samples[ui];
|
||
|
|
b = samples[ui + ui1];
|
||
|
|
a |= samples[ui + vi1]<<16;
|
||
|
|
b |= samples[ui + ui1 + vi1]<<16;
|
||
|
|
ud = (u>>8) & 0xFF;
|
||
|
|
vd = (v>>8) & 0xFF;
|
||
|
|
ud = FZ_EXPAND(ud);
|
||
|
|
vd = FZ_EXPAND(vd);
|
||
|
|
/* a = blend(a,b,ud) */
|
||
|
|
a = ((b-a) * ud + (a<<8)) & MASK;
|
||
|
|
/* a = blend(a,a>>16,vd) */
|
||
|
|
a = (((a>>24)-(a>>8)) * vd + a);
|
||
|
|
a = (a>>8) & 0xFF;
|
||
|
|
a = FZ_COMBINE(FZ_EXPAND(a), FZ_EXPAND(cov));
|
||
|
|
if (a != 0)
|
||
|
|
{
|
||
|
|
if (a == 256)
|
||
|
|
dst[0] = 255;
|
||
|
|
else
|
||
|
|
dst[0] = FZ_BLEND(255, dst[0], a);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
dst++;
|
||
|
|
u += fa;
|
||
|
|
v += fb;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void fz_accelerate(void)
|
||
|
|
{
|
||
|
|
if (sizeof(int) == 4 && sizeof(unsigned int) == 4 && !fz_is_big_endian())
|
||
|
|
{
|
||
|
|
// fz_path_w4i1o4 = path_w4i1o4_32bit;
|
||
|
|
// fz_text_w4i1o4 = text_w4i1o4_32bit;
|
||
|
|
// fz_img_4o4 = img_4o4_32bit;
|
||
|
|
// fz_img_w4i1o4 = img_w4i1o4_32bit;
|
||
|
|
// fz_img_1o1 = img_1o1_32bit;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef HAVE_CPUDEP
|
||
|
|
fz_accelerate_arch();
|
||
|
|
#endif
|
||
|
|
}
|