draw: Rename files in draw directory.

1 files changed, 486 insertions, 0 deletions

diff --git a/draw/arch_port.c b/draw/arch_port.c
new file mode 100644
index 00000000..c7be977a
--- /dev/null
+++ b/draw/arch_port.c
@@ -0,0 +1,486 @@
+#include "fitz.h"
+
+typedef unsigned char byte;
+
+/* These C implementations use SWAR (SIMD-within-a-register) techniques. */
+
+#if 0 /* TODO: move into porterduff.c functions */
+
+#define MASK 0xFF00FF00;
+
+static void
+path_w4i1o4_32bit(byte *rgba,
+	byte * restrict src, byte cov, int len, byte * restrict dst)
+{
+	/* COLOR * coverage + DST * (256-coverage) = (COLOR - DST)*coverage + DST*256 */
+	unsigned int *dst32 = (unsigned int *)(void *)dst;
+	int alpha = rgba[3];
+	unsigned int rb = rgba[0] | (rgba[2] << 16);
+	unsigned int ga = rgba[1] | 0xFF0000;
+
+	if (alpha == 0)
+		return;
+
+	if (alpha != 255)
+	{
+		alpha += alpha>>7; /* alpha is now in the 0...256 range */
+		while (len--)
+		{
+			unsigned int ca, drb, dga, crb, cga;
+			cov += *src; *src++ = 0;
+			ca = cov + (cov>>7); /* ca is in 0...256 range */
+			ca = (ca*alpha)>>8; /* ca is is in 0...256 range */
+			drb = *dst32++;
+			if (ca != 0)
+			{
+				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;
+			}
+		}
+	}
+	else
+	{
+		while (len--)
+		{
+			unsigned int ca, drb, dga, crb, cga;
+			cov += *src; *src++ = 0;
+			ca = cov + (cov>>7); /* ca is in 0...256 range */
+			drb = *dst32++;
+			if (ca == 0)
+				continue;
+			if (ca == 255)
+			{
+				drb = (ga<<8) | rb;
+			}
+			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;
+		}
+	}
+}
+
+static void
+text_w4i1o4_32bit(byte *rgba,
+	byte * restrict src, int srcw,
+	byte * restrict dst, int dstw, int w0, int h)
+{
+	unsigned int *dst32 = (unsigned int *)(void *)dst;
+	unsigned int alpha = rgba[3];
+	unsigned int rb = rgba[0] | (rgba[2] << 16);
+	unsigned int ga = rgba[1] | 0xFF0000;
+
+	if (alpha == 0)
+		return;
+
+	srcw -= w0;
+	dstw = (dstw>>2)-w0;
+
+	if (alpha != 255)
+	{
+		alpha += alpha>>7; /* alpha is now in the 0...256 range */
+		while (h--)
+		{
+			int w = w0;
+			while (w--)
+			{
+				unsigned int ca, drb, dga, crb, cga;
+				ca = *src++;
+				drb = *dst32++;
+				ca += ca>>7;
+				ca = (ca*alpha)>>8;
+				if (ca == 0)
+					continue;
+				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;
+			}
+			src += srcw;
+			dst32 += dstw;
+		}
+	}
+	else
+	{
+		while (h--)
+		{
+			int w = w0;
+			while (w--)
+			{
+				unsigned int ca, drb, dga, crb, cga;
+				ca = *src++;
+				drb = *dst32++;
+				ca += ca>>7;
+				if (ca == 0)
+					continue;
+				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;
+			}
+			src += srcw;
+			dst32 += dstw;
+		}
+	}
+}
+
+static void
+img_4o4_32bit(byte * restrict src, byte cov, int len, byte * restrict dst,
+	fz_pixmap *image, int u, int v, int fa, int fb)
+{
+	unsigned int *dst32 = (unsigned int *)(void *)dst;
+	unsigned int *samples = (unsigned int *)(void *)image->samples;
+	int w = image->w;
+	int h = image->h-1;
+
+	while (len--)
+	{
+		unsigned int a, a1, d, d1;
+		int sa;
+		cov += *src; *src = 0; src++;
+		/* (a,a1) = sampleargb(samples, w, h, u, v, argb); */
+		{
+			int ui, ui1, vi, vi1, ud, vd;
+			unsigned int b, b1, c, c1;
+			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];
+			c = samples[ui + vi1];
+			d = samples[ui + ui1 + vi1];
+			ud = (u>>8) & 0xFF;
+			vd = (v>>8) & 0xFF;
+			ud = FZ_EXPAND(ud);
+			vd = FZ_EXPAND(vd);
+			/* (a,a1) = blend(a,b,ud) */
+			a1 = a & MASK;
+			a = (a<<8) & MASK;
+			b1 = (b>>8) & ~MASK;
+			b = b & ~MASK;
+			a = ((b -(a >>8)) * ud + a ) & MASK;
+			a1 = ((b1-(a1>>8)) * ud + a1) & MASK;
+			/* (c,c1) = blend(c,d,ud) */
+			c1 = c & MASK;
+			c = (c<<8) & MASK;
+			d1 = (d>>8) & ~MASK;
+			d = d & ~MASK;
+			c = ((d -(c >>8)) * ud + c ) & MASK;
+			c1 = ((d1-(c1>>8)) * ud + c1) & MASK;
+			/* (a,a1) = blend((a,a1),(c,c1),vd) */
+			a = (((c >>8)-(a >>8)) * vd + a ) & MASK;
+			a1 = (((c1>>8)-(a1>>8)) * vd + a1) & MASK;
+		}
+		sa = (a1>>24);
+		sa = FZ_COMBINE(FZ_EXPAND(sa), FZ_EXPAND(cov));
+		a1 |= 0xFF000000;
+		d = *dst32++;
+		d1 = d & MASK;
+		d = (d<<8) & MASK;
+		a = (((a >>8)-(d >>8)) * sa + d ) & MASK;
+		a1 = (((a1>>8)-(d1>>8)) * sa + d1) & MASK;
+		dst32[-1] = (a>>8) | a1;
+		u += fa;
+		v += fb;
+	}
+}
+
+static void
+img_w4i1o4_32bit(byte *rgba, 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;
+	int alpha = FZ_EXPAND(rgba[3]);
+	unsigned int rb = rgba[0] | (rgba[2] << 16);
+	unsigned int ga = rgba[1] | 0xFF0000;
+	unsigned int *dst32 = (unsigned int *)(void *)dst;
+
+	if (alpha == 0)
+		return;
+	if (alpha != 256)
+	{
+		while (len--)
+		{
+			unsigned int ca, drb, dga, crb, cga;
+			unsigned int a, b;
+			cov += *src; *src = 0; src++;
+			drb = *dst32++;
+			ca = FZ_COMBINE(FZ_EXPAND(cov), alpha);
+			if (ca != 0)
+			{
+				int ui, ui1, vi, vi1, ud, vd;
+				/* a = 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;
+				ca = FZ_COMBINE(ca, FZ_EXPAND(a));
+			}
+			if (ca != 0)
+			{
+				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;
+		}
+	}
+	else
+	{
+		while (len--)
+		{
+			unsigned int ca, drb, dga, crb, cga;
+			unsigned int a, b;
+			cov += *src; *src = 0; src++;
+			drb = *dst32++;
+			if (cov != 0)
+			{
+				int ui, ui1, vi, vi1, ud, vd;
+				/* a = 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;
+				ca = FZ_COMBINE(FZ_EXPAND(cov),FZ_EXPAND(a));
+				if (ca != 0)
+				{
+					if (ca == 256)
+					{
+						drb = (ga<<8) | rb;
+					}
+					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_isbigendian())
+	{
+//		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_acceleratearch();
+#endif
+}