mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 21:31:53 +00:00
418 lines
13 KiB
C++
418 lines
13 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "graphics/scaler/intern.h"
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static inline int GetResult(uint32 A, uint32 B, uint32 C, uint32 D) {
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const bool ac = (A==C);
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const bool bc = (B==C);
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const int x1 = ac;
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const int y1 = (bc & !ac);
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const bool ad = (A==D);
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const bool bd = (B==D);
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const int x2 = ad;
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const int y2 = (bd & !ad);
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const int x = x1+x2;
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const int y = y1+y2;
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return (y>>1) - (x>>1);
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}
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#define interpolate_1_1 interpolate16_1_1<ColorMask>
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#define interpolate_3_1 interpolate16_3_1<ColorMask>
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#define interpolate_6_1_1 interpolate16_6_1_1<ColorMask>
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#define interpolate_1_1_1_1 interpolate16_1_1_1_1<ColorMask>
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template<typename ColorMask>
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void Super2xSaITemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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const uint16 *bP;
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uint16 *dP;
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const uint32 nextlineSrc = srcPitch >> 1;
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while (height--) {
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bP = (const uint16 *)srcPtr;
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dP = (uint16 *)dstPtr;
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for (int i = 0; i < width; ++i) {
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unsigned color4, color5, color6;
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unsigned color1, color2, color3;
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unsigned colorA0, colorA1, colorA2, colorA3;
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unsigned colorB0, colorB1, colorB2, colorB3;
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unsigned colorS1, colorS2;
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unsigned product1a, product1b, product2a, product2b;
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//--------------------------------------- B1 B2
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// 4 5 6 S2
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// 1 2 3 S1
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// A1 A2
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colorB0 = *(bP - nextlineSrc - 1);
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colorB1 = *(bP - nextlineSrc);
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colorB2 = *(bP - nextlineSrc + 1);
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colorB3 = *(bP - nextlineSrc + 2);
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color4 = *(bP - 1);
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color5 = *(bP);
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color6 = *(bP + 1);
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colorS2 = *(bP + 2);
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color1 = *(bP + nextlineSrc - 1);
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color2 = *(bP + nextlineSrc);
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color3 = *(bP + nextlineSrc + 1);
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colorS1 = *(bP + nextlineSrc + 2);
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colorA0 = *(bP + 2 * nextlineSrc - 1);
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colorA1 = *(bP + 2 * nextlineSrc);
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colorA2 = *(bP + 2 * nextlineSrc + 1);
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colorA3 = *(bP + 2 * nextlineSrc + 2);
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//--------------------------------------
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if (color2 == color6 && color5 != color3) {
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product2b = product1b = color2;
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} else if (color5 == color3 && color2 != color6) {
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product2b = product1b = color5;
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} else if (color5 == color3 && color2 == color6) {
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register int r = 0;
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r += GetResult(color6, color5, color1, colorA1);
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r += GetResult(color6, color5, color4, colorB1);
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r += GetResult(color6, color5, colorA2, colorS1);
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r += GetResult(color6, color5, colorB2, colorS2);
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if (r > 0)
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product2b = product1b = color6;
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else if (r < 0)
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product2b = product1b = color5;
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else {
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product2b = product1b = interpolate_1_1(color5, color6);
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}
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} else {
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if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0)
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product2b = interpolate_3_1(color3, color2);
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else if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3)
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product2b = interpolate_3_1(color2, color3);
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else
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product2b = interpolate_1_1(color2, color3);
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if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0)
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product1b = interpolate_3_1(color6, color5);
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else if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3)
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product1b = interpolate_3_1(color5, color6);
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else
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product1b = interpolate_1_1(color5, color6);
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}
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if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2)
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product2a = interpolate_1_1(color2, color5);
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else if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0)
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product2a = interpolate_1_1(color2, color5);
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else
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product2a = color2;
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if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2)
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product1a = interpolate_1_1(color2, color5);
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else if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0)
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product1a = interpolate_1_1(color2, color5);
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else
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product1a = color5;
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*(dP + 0) = (uint16) product1a;
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*(dP + 1) = (uint16) product1b;
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*(dP + dstPitch/2 + 0) = (uint16) product2a;
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*(dP + dstPitch/2 + 1) = (uint16) product2b;
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bP += 1;
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dP += 2;
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch * 2;
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}
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}
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void Super2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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extern int gBitFormat;
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if (gBitFormat == 565)
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Super2xSaITemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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else
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Super2xSaITemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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}
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template<typename ColorMask>
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void SuperEagleTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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const uint16 *bP;
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uint16 *dP;
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const uint32 nextlineSrc = srcPitch >> 1;
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while (height--) {
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bP = (const uint16 *)srcPtr;
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dP = (uint16 *)dstPtr;
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for (int i = 0; i < width; ++i) {
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unsigned color4, color5, color6;
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unsigned color1, color2, color3;
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unsigned colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;
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unsigned product1a, product1b, product2a, product2b;
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colorB1 = *(bP - nextlineSrc);
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colorB2 = *(bP - nextlineSrc + 1);
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color4 = *(bP - 1);
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color5 = *(bP);
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color6 = *(bP + 1);
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colorS2 = *(bP + 2);
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color1 = *(bP + nextlineSrc - 1);
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color2 = *(bP + nextlineSrc);
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color3 = *(bP + nextlineSrc + 1);
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colorS1 = *(bP + nextlineSrc + 2);
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colorA1 = *(bP + 2 * nextlineSrc);
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colorA2 = *(bP + 2 * nextlineSrc + 1);
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// --------------------------------------
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if (color5 != color3) {
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if (color2 == color6) {
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product1b = product2a = color2;
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if ((color1 == color2) || (color6 == colorB2)) {
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product1a = interpolate_3_1(color2, color5);
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} else {
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product1a = interpolate_1_1(color5, color6);
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}
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if ((color6 == colorS2) || (color2 == colorA1)) {
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product2b = interpolate_3_1(color2, color3);
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} else {
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product2b = interpolate_1_1(color2, color3);
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}
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} else {
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product2b = interpolate_6_1_1(color3, color2, color6);
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product1a = interpolate_6_1_1(color5, color2, color6);
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product2a = interpolate_6_1_1(color2, color5, color3);
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product1b = interpolate_6_1_1(color6, color5, color3);
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}
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} else {
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if (color2 != color6) {
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product2b = product1a = color5;
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if ((colorB1 == color5) || (color3 == colorS1)) {
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product1b = interpolate_3_1(color5, color6);
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} else {
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product1b = interpolate_1_1(color5, color6);
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}
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if ((color3 == colorA2) || (color4 == color5)) {
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product2a = interpolate_3_1(color5, color2);
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} else {
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product2a = interpolate_1_1(color2, color3);
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}
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} else {
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register int r = 0;
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r += GetResult(color6, color5, color1, colorA1);
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r += GetResult(color6, color5, color4, colorB1);
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r += GetResult(color6, color5, colorA2, colorS1);
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r += GetResult(color6, color5, colorB2, colorS2);
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if (r > 0) {
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product1b = product2a = color2;
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product1a = product2b = interpolate_1_1(color5, color6);
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} else if (r < 0) {
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product2b = product1a = color5;
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product1b = product2a = interpolate_1_1(color5, color6);
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} else {
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product2b = product1a = color5;
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product1b = product2a = color2;
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}
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}
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}
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*(dP + 0) = (uint16) product1a;
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*(dP + 1) = (uint16) product1b;
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*(dP + dstPitch/2 + 0) = (uint16) product2a;
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*(dP + dstPitch/2 + 1) = (uint16) product2b;
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bP += 1;
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dP += 2;
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch * 2;
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}
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}
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void SuperEagle(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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extern int gBitFormat;
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if (gBitFormat == 565)
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SuperEagleTemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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else
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SuperEagleTemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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}
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template<typename ColorMask>
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void _2xSaITemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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const uint16 *bP;
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uint16 *dP;
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const uint32 nextlineSrc = srcPitch >> 1;
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while (height--) {
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bP = (const uint16 *)srcPtr;
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dP = (uint16 *)dstPtr;
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for (int i = 0; i < width; ++i) {
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register unsigned colorA, colorB;
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unsigned colorC, colorD,
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colorE, colorF, colorG, colorH, colorI, colorJ, colorK, colorL, colorM, colorN, colorO, colorP;
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unsigned product, product1, product2;
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//---------------------------------------
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// Map of the pixels: I|E F|J
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// G|A B|K
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// H|C D|L
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// M|N O|P
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colorI = *(bP - nextlineSrc - 1);
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colorE = *(bP - nextlineSrc);
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colorF = *(bP - nextlineSrc + 1);
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colorJ = *(bP - nextlineSrc + 2);
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colorG = *(bP - 1);
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colorA = *(bP);
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colorB = *(bP + 1);
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colorK = *(bP + 2);
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colorH = *(bP + nextlineSrc - 1);
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colorC = *(bP + nextlineSrc);
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colorD = *(bP + nextlineSrc + 1);
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colorL = *(bP + nextlineSrc + 2);
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colorM = *(bP + 2 * nextlineSrc - 1);
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colorN = *(bP + 2 * nextlineSrc);
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colorO = *(bP + 2 * nextlineSrc + 1);
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colorP = *(bP + 2 * nextlineSrc + 2);
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if ((colorA == colorD) && (colorB != colorC)) {
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if (((colorA == colorE) && (colorB == colorL)) ||
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((colorA == colorC) && (colorA == colorF) && (colorB != colorE) && (colorB == colorJ))) {
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product = colorA;
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} else {
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product = interpolate_1_1(colorA, colorB);
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}
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if (((colorA == colorG) && (colorC == colorO)) ||
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((colorA == colorB) && (colorA == colorH) && (colorG != colorC) && (colorC == colorM))) {
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product1 = colorA;
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} else {
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product1 = interpolate_1_1(colorA, colorC);
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}
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product2 = colorA;
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} else if ((colorB == colorC) && (colorA != colorD)) {
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if (((colorB == colorF) && (colorA == colorH)) ||
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((colorB == colorE) && (colorB == colorD) && (colorA != colorF) && (colorA == colorI))) {
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product = colorB;
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} else {
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product = interpolate_1_1(colorA, colorB);
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}
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if (((colorC == colorH) && (colorA == colorF)) ||
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((colorC == colorG) && (colorC == colorD) && (colorA != colorH) && (colorA == colorI))) {
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product1 = colorC;
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} else {
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product1 = interpolate_1_1(colorA, colorC);
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}
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product2 = colorB;
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} else if ((colorA == colorD) && (colorB == colorC)) {
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if (colorA == colorB) {
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product = colorA;
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product1 = colorA;
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product2 = colorA;
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} else {
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register int r = 0;
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product1 = interpolate_1_1(colorA, colorC);
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product = interpolate_1_1(colorA, colorB);
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r += GetResult(colorA, colorB, colorG, colorE);
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r -= GetResult(colorB, colorA, colorK, colorF);
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r -= GetResult(colorB, colorA, colorH, colorN);
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r += GetResult(colorA, colorB, colorL, colorO);
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if (r > 0)
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product2 = colorA;
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else if (r < 0)
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product2 = colorB;
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else {
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product2 = interpolate_1_1_1_1(colorA, colorB, colorC, colorD);
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}
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}
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} else {
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product2 = interpolate_1_1_1_1(colorA, colorB, colorC, colorD);
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if ((colorA == colorC) && (colorA == colorF)
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&& (colorB != colorE) && (colorB == colorJ)) {
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product = colorA;
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} else if ((colorB == colorE) && (colorB == colorD)
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&& (colorA != colorF) && (colorA == colorI)) {
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product = colorB;
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} else {
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product = interpolate_1_1(colorA, colorB);
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}
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if ((colorA == colorB) && (colorA == colorH)
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&& (colorG != colorC) && (colorC == colorM)) {
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product1 = colorA;
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} else if ((colorC == colorG) && (colorC == colorD)
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&& (colorA != colorH) && (colorA == colorI)) {
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product1 = colorC;
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} else {
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product1 = interpolate_1_1(colorA, colorC);
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}
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}
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*(dP + 0) = (uint16) colorA;
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*(dP + 1) = (uint16) product;
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*(dP + dstPitch/2 + 0) = (uint16) product1;
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*(dP + dstPitch/2 + 1) = (uint16) product2;
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bP += 1;
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dP += 2;
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch * 2;
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}
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}
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void _2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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extern int gBitFormat;
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if (gBitFormat == 565)
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_2xSaITemplate<Graphics::ColorMasks<565> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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else
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_2xSaITemplate<Graphics::ColorMasks<555> >(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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}
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