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scummvm/graphics/scaler/2xsai.cpp
strangerke 69b1485a22 GIT: Clean up: Suppress SVN tags, now useless
2011-05-12 01:16:22 +02:00

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "graphics/scaler/intern.h"
static inline int GetResult(uint32 A, uint32 B, uint32 C, uint32 D) {
const bool ac = (A==C);
const bool bc = (B==C);
const int x1 = ac;
const int y1 = (bc & !ac);
const bool ad = (A==D);
const bool bd = (B==D);
const int x2 = ad;
const int y2 = (bd & !ad);
const int x = x1+x2;
const int y = y1+y2;
return (y>>1) - (x>>1);
}
#define interpolate_1_1 interpolate16_1_1<ColorMask>
#define interpolate_3_1 interpolate16_3_1<ColorMask>
#define interpolate_6_1_1 interpolate16_6_1_1<ColorMask>
#define interpolate_1_1_1_1 interpolate16_1_1_1_1<ColorMask>
template<typename ColorMask>
void Super2xSaITemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
const uint16 *bP;
uint16 *dP;
const uint32 nextlineSrc = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = (uint16 *)dstPtr;
for (int i = 0; i < width; ++i) {
unsigned color4, color5, color6;
unsigned color1, color2, color3;
unsigned colorA0, colorA1, colorA2, colorA3;
unsigned colorB0, colorB1, colorB2, colorB3;
unsigned colorS1, colorS2;
unsigned product1a, product1b, product2a, product2b;
//--------------------------------------- B1 B2
// 4 5 6 S2
// 1 2 3 S1
// A1 A2
colorB0 = *(bP - nextlineSrc - 1);
colorB1 = *(bP - nextlineSrc);
colorB2 = *(bP - nextlineSrc + 1);
colorB3 = *(bP - nextlineSrc + 2);
color4 = *(bP - 1);
color5 = *(bP);
color6 = *(bP + 1);
colorS2 = *(bP + 2);
color1 = *(bP + nextlineSrc - 1);
color2 = *(bP + nextlineSrc);
color3 = *(bP + nextlineSrc + 1);
colorS1 = *(bP + nextlineSrc + 2);
colorA0 = *(bP + 2 * nextlineSrc - 1);
colorA1 = *(bP + 2 * nextlineSrc);
colorA2 = *(bP + 2 * nextlineSrc + 1);
colorA3 = *(bP + 2 * nextlineSrc + 2);
//--------------------------------------
if (color2 == color6 && color5 != color3) {
product2b = product1b = color2;
} else if (color5 == color3 && color2 != color6) {
product2b = product1b = color5;
} else if (color5 == color3 && color2 == color6) {
register int r = 0;
r += GetResult(color6, color5, color1, colorA1);
r += GetResult(color6, color5, color4, colorB1);
r += GetResult(color6, color5, colorA2, colorS1);
r += GetResult(color6, color5, colorB2, colorS2);
if (r > 0)
product2b = product1b = color6;
else if (r < 0)
product2b = product1b = color5;
else {
product2b = product1b = interpolate_1_1(color5, color6);
}
} else {
if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0)
product2b = interpolate_3_1(color3, color2);
else if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3)
product2b = interpolate_3_1(color2, color3);
else
product2b = interpolate_1_1(color2, color3);
if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0)
product1b = interpolate_3_1(color6, color5);
else if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3)
product1b = interpolate_3_1(color5, color6);
else
product1b = interpolate_1_1(color5, color6);
}
if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2)
product2a = interpolate_1_1(color2, color5);
else if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0)
product2a = interpolate_1_1(color2, color5);
else
product2a = color2;
if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2)
product1a = interpolate_1_1(color2, color5);
else if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0)
product1a = interpolate_1_1(color2, color5);
else
product1a = color5;
*(dP + 0) = (uint16) product1a;
*(dP + 1) = (uint16) product1b;
*(dP + dstPitch/2 + 0) = (uint16) product2a;
*(dP + dstPitch/2 + 1) = (uint16) product2b;
bP += 1;
dP += 2;
}
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
}
}
void Super2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
extern int gBitFormat;
if (gBitFormat == 565)
Super2xSaITemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
else
Super2xSaITemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
}
template<typename ColorMask>
void SuperEagleTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
const uint16 *bP;
uint16 *dP;
const uint32 nextlineSrc = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = (uint16 *)dstPtr;
for (int i = 0; i < width; ++i) {
unsigned color4, color5, color6;
unsigned color1, color2, color3;
unsigned colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;
unsigned product1a, product1b, product2a, product2b;
colorB1 = *(bP - nextlineSrc);
colorB2 = *(bP - nextlineSrc + 1);
color4 = *(bP - 1);
color5 = *(bP);
color6 = *(bP + 1);
colorS2 = *(bP + 2);
color1 = *(bP + nextlineSrc - 1);
color2 = *(bP + nextlineSrc);
color3 = *(bP + nextlineSrc + 1);
colorS1 = *(bP + nextlineSrc + 2);
colorA1 = *(bP + 2 * nextlineSrc);
colorA2 = *(bP + 2 * nextlineSrc + 1);
// --------------------------------------
if (color5 != color3) {
if (color2 == color6) {
product1b = product2a = color2;
if ((color1 == color2) || (color6 == colorB2)) {
product1a = interpolate_3_1(color2, color5);
} else {
product1a = interpolate_1_1(color5, color6);
}
if ((color6 == colorS2) || (color2 == colorA1)) {
product2b = interpolate_3_1(color2, color3);
} else {
product2b = interpolate_1_1(color2, color3);
}
} else {
product2b = interpolate_6_1_1(color3, color2, color6);
product1a = interpolate_6_1_1(color5, color2, color6);
product2a = interpolate_6_1_1(color2, color5, color3);
product1b = interpolate_6_1_1(color6, color5, color3);
}
} else {
if (color2 != color6) {
product2b = product1a = color5;
if ((colorB1 == color5) || (color3 == colorS1)) {
product1b = interpolate_3_1(color5, color6);
} else {
product1b = interpolate_1_1(color5, color6);
}
if ((color3 == colorA2) || (color4 == color5)) {
product2a = interpolate_3_1(color5, color2);
} else {
product2a = interpolate_1_1(color2, color3);
}
} else {
register int r = 0;
r += GetResult(color6, color5, color1, colorA1);
r += GetResult(color6, color5, color4, colorB1);
r += GetResult(color6, color5, colorA2, colorS1);
r += GetResult(color6, color5, colorB2, colorS2);
if (r > 0) {
product1b = product2a = color2;
product1a = product2b = interpolate_1_1(color5, color6);
} else if (r < 0) {
product2b = product1a = color5;
product1b = product2a = interpolate_1_1(color5, color6);
} else {
product2b = product1a = color5;
product1b = product2a = color2;
}
}
}
*(dP + 0) = (uint16) product1a;
*(dP + 1) = (uint16) product1b;
*(dP + dstPitch/2 + 0) = (uint16) product2a;
*(dP + dstPitch/2 + 1) = (uint16) product2b;
bP += 1;
dP += 2;
}
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
}
}
void SuperEagle(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
extern int gBitFormat;
if (gBitFormat == 565)
SuperEagleTemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
else
SuperEagleTemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
}
template<typename ColorMask>
void _2xSaITemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
const uint16 *bP;
uint16 *dP;
const uint32 nextlineSrc = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = (uint16 *)dstPtr;
for (int i = 0; i < width; ++i) {
register unsigned colorA, colorB;
unsigned colorC, colorD,
colorE, colorF, colorG, colorH, colorI, colorJ, colorK, colorL, colorM, colorN, colorO;
unsigned product, product1, product2;
//---------------------------------------
// Map of the pixels: I|E F|J
// G|A B|K
// H|C D|L
// M|N O|P
colorI = *(bP - nextlineSrc - 1);
colorE = *(bP - nextlineSrc);
colorF = *(bP - nextlineSrc + 1);
colorJ = *(bP - nextlineSrc + 2);
colorG = *(bP - 1);
colorA = *(bP);
colorB = *(bP + 1);
colorK = *(bP + 2);
colorH = *(bP + nextlineSrc - 1);
colorC = *(bP + nextlineSrc);
colorD = *(bP + nextlineSrc + 1);
colorL = *(bP + nextlineSrc + 2);
colorM = *(bP + 2 * nextlineSrc - 1);
colorN = *(bP + 2 * nextlineSrc);
colorO = *(bP + 2 * nextlineSrc + 1);
if ((colorA == colorD) && (colorB != colorC)) {
if (((colorA == colorE) && (colorB == colorL)) ||
((colorA == colorC) && (colorA == colorF) && (colorB != colorE) && (colorB == colorJ))) {
product = colorA;
} else {
product = interpolate_1_1(colorA, colorB);
}
if (((colorA == colorG) && (colorC == colorO)) ||
((colorA == colorB) && (colorA == colorH) && (colorG != colorC) && (colorC == colorM))) {
product1 = colorA;
} else {
product1 = interpolate_1_1(colorA, colorC);
}
product2 = colorA;
} else if ((colorB == colorC) && (colorA != colorD)) {
if (((colorB == colorF) && (colorA == colorH)) ||
((colorB == colorE) && (colorB == colorD) && (colorA != colorF) && (colorA == colorI))) {
product = colorB;
} else {
product = interpolate_1_1(colorA, colorB);
}
if (((colorC == colorH) && (colorA == colorF)) ||
((colorC == colorG) && (colorC == colorD) && (colorA != colorH) && (colorA == colorI))) {
product1 = colorC;
} else {
product1 = interpolate_1_1(colorA, colorC);
}
product2 = colorB;
} else if ((colorA == colorD) && (colorB == colorC)) {
if (colorA == colorB) {
product = colorA;
product1 = colorA;
product2 = colorA;
} else {
register int r = 0;
product1 = interpolate_1_1(colorA, colorC);
product = interpolate_1_1(colorA, colorB);
r += GetResult(colorA, colorB, colorG, colorE);
r -= GetResult(colorB, colorA, colorK, colorF);
r -= GetResult(colorB, colorA, colorH, colorN);
r += GetResult(colorA, colorB, colorL, colorO);
if (r > 0)
product2 = colorA;
else if (r < 0)
product2 = colorB;
else {
product2 = interpolate_1_1_1_1(colorA, colorB, colorC, colorD);
}
}
} else {
product2 = interpolate_1_1_1_1(colorA, colorB, colorC, colorD);
if ((colorA == colorC) && (colorA == colorF)
&& (colorB != colorE) && (colorB == colorJ)) {
product = colorA;
} else if ((colorB == colorE) && (colorB == colorD)
&& (colorA != colorF) && (colorA == colorI)) {
product = colorB;
} else {
product = interpolate_1_1(colorA, colorB);
}
if ((colorA == colorB) && (colorA == colorH)
&& (colorG != colorC) && (colorC == colorM)) {
product1 = colorA;
} else if ((colorC == colorG) && (colorC == colorD)
&& (colorA != colorH) && (colorA == colorI)) {
product1 = colorC;
} else {
product1 = interpolate_1_1(colorA, colorC);
}
}
*(dP + 0) = (uint16) colorA;
*(dP + 1) = (uint16) product;
*(dP + dstPitch/2 + 0) = (uint16) product1;
*(dP + dstPitch/2 + 1) = (uint16) product2;
bP += 1;
dP += 2;
}
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
}
}
void _2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
extern int gBitFormat;
if (gBitFormat == 565)
_2xSaITemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
else
_2xSaITemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
}
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