662 lines
20 KiB
C++

/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "scummsys.h"
#include "scaler.h"
/********** 2XSAI Filter *****************/
static uint32 colorMask = 0xF7DEF7DE;
static uint32 lowPixelMask = 0x08210821;
static uint32 qcolorMask = 0xE79CE79C;
static uint32 qlowpixelMask = 0x18631863;
static uint32 redblueMask = 0xF81F;
static uint32 greenMask = 0x7E0;
static const uint16 dotmatrix_565[16] = {
0x01E0, 0x0007, 0x3800, 0x0000,
0x39E7, 0x0000, 0x39E7, 0x0000,
0x3800, 0x0000, 0x01E0, 0x0007,
0x39E7, 0x0000, 0x39E7, 0x0000
};
static const uint16 dotmatrix_555[16] = {
0x00E0, 0x0007, 0x1C00, 0x0000,
0x1CE7, 0x0000, 0x1CE7, 0x0000,
0x1C00, 0x0000, 0x00E0, 0x0007,
0x1CE7, 0x0000, 0x1CE7, 0x0000
};
static const uint16 *dotmatrix;
int Init_2xSaI(uint32 BitFormat) {
if (BitFormat == 565) {
colorMask = 0xF7DEF7DE;
lowPixelMask = 0x08210821;
qcolorMask = 0xE79CE79C;
qlowpixelMask = 0x18631863;
redblueMask = 0xF81F;
greenMask = 0x7E0;
dotmatrix = dotmatrix_565;
} else if (BitFormat == 555) {
colorMask = 0x7BDE7BDE;
lowPixelMask = 0x04210421;
qcolorMask = 0x739C739C;
qlowpixelMask = 0x0C630C63;
redblueMask = 0x7C1F;
greenMask = 0x3E0;
dotmatrix = dotmatrix_555;
} else {
return 0;
}
return 1;
}
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;
static const int rmap[3][3] = {
{0, 0, -1},
{0, 0, -1},
{1, 1, 0}
};
return rmap[y][x];
}
static inline uint32 INTERPOLATE(uint32 A, uint32 B) {
if (A != B) {
return (((A & colorMask) >> 1) + ((B & colorMask) >> 1) + (A & B & lowPixelMask));
} else
return A;
}
static inline uint32 Q_INTERPOLATE(uint32 A, uint32 B, uint32 C, uint32 D) {
register uint32 x = ((A & qcolorMask) >> 2) +
((B & qcolorMask) >> 2) + ((C & qcolorMask) >> 2) + ((D & qcolorMask) >> 2);
register uint32 y = (A & qlowpixelMask) +
(B & qlowpixelMask) + (C & qlowpixelMask) + (D & qlowpixelMask);
y = (y >> 2) & qlowpixelMask;
return x + y;
}
void Super2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
const uint16 *bP;
uint8 *dP;
const uint32 inc_bP = 1;
const uint32 Nextline = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = (uint8 *)dstPtr;
for (uint32 finish = width; finish; finish -= inc_bP) {
uint32 color4, color5, color6;
uint32 color1, color2, color3;
uint32 colorA0, colorA1, colorA2, colorA3;
uint32 colorB0, colorB1, colorB2, colorB3;
uint32 colorS1, colorS2;
uint32 product1a, product1b, product2a, product2b;
//--------------------------------------- B1 B2
// 4 5 6 S2
// 1 2 3 S1
// A1 A2
colorB0 = *(bP - Nextline - 1);
colorB1 = *(bP - Nextline);
colorB2 = *(bP - Nextline + 1);
colorB3 = *(bP - Nextline + 2);
color4 = *(bP - 1);
color5 = *(bP);
color6 = *(bP + 1);
colorS2 = *(bP + 2);
color1 = *(bP + Nextline - 1);
color2 = *(bP + Nextline);
color3 = *(bP + Nextline + 1);
colorS1 = *(bP + Nextline + 2);
colorA0 = *(bP + Nextline + Nextline - 1);
colorA1 = *(bP + Nextline + Nextline);
colorA2 = *(bP + Nextline + Nextline + 1);
colorA3 = *(bP + Nextline + Nextline + 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(color5, color6);
}
} else {
if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0)
product2b = Q_INTERPOLATE(color3, color3, color3, color2);
else if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3)
product2b = Q_INTERPOLATE(color2, color2, color2, color3);
else
product2b = INTERPOLATE(color2, color3);
if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0)
product1b = Q_INTERPOLATE(color6, color6, color6, color5);
else if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3)
product1b = Q_INTERPOLATE(color6, color5, color5, color5);
else
product1b = INTERPOLATE(color5, color6);
}
if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2)
product2a = INTERPOLATE(color2, color5);
else if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0)
product2a = INTERPOLATE(color2, color5);
else
product2a = color2;
if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2)
product1a = INTERPOLATE(color2, color5);
else if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0)
product1a = INTERPOLATE(color2, color5);
else
product1a = color5;
#ifdef SCUMM_LITTLE_ENDIAN
product1a = product1a | (product1b << 16);
product2a = product2a | (product2b << 16);
#endif
#ifdef SCUMM_BIG_ENDIAN
product1a = product1b | (product1a << 16);
product2a = product2b | (product2a << 16);
#endif
*((uint32 *)dP) = product1a;
*((uint32 *)(dP + dstPitch)) = product2a;
bP += inc_bP;
dP += sizeof(uint32);
} // end of for ( finish= width etc..)
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
} // while (height--)
}
void SuperEagle(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *dP;
const uint16 *bP;
const uint32 inc_bP = 1;
const uint32 Nextline = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = dstPtr;
for (uint32 finish = width; finish; finish -= inc_bP) {
uint32 color4, color5, color6;
uint32 color1, color2, color3;
uint32 colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;
uint32 product1a, product1b, product2a, product2b;
colorB1 = *(bP - Nextline);
colorB2 = *(bP - Nextline + 1);
color4 = *(bP - 1);
color5 = *(bP);
color6 = *(bP + 1);
colorS2 = *(bP + 2);
color1 = *(bP + Nextline - 1);
color2 = *(bP + Nextline);
color3 = *(bP + Nextline + 1);
colorS1 = *(bP + Nextline + 2);
colorA1 = *(bP + Nextline + Nextline);
colorA2 = *(bP + Nextline + Nextline + 1);
// --------------------------------------
if (color2 == color6 && color5 != color3) {
product1b = product2a = color2;
if ((color1 == color2) || (color6 == colorB2)) {
product1a = INTERPOLATE(color2, color5);
product1a = INTERPOLATE(color2, product1a);
} else {
product1a = INTERPOLATE(color5, color6);
}
if ((color6 == colorS2) || (color2 == colorA1)) {
product2b = INTERPOLATE(color2, color3);
product2b = INTERPOLATE(color2, product2b);
} else {
product2b = INTERPOLATE(color2, color3);
}
} else if (color5 == color3 && color2 != color6) {
product2b = product1a = color5;
if ((colorB1 == color5) || (color3 == colorS1)) {
product1b = INTERPOLATE(color5, color6);
product1b = INTERPOLATE(color5, product1b);
} else {
product1b = INTERPOLATE(color5, color6);
}
if ((color3 == colorA2) || (color4 == color5)) {
product2a = INTERPOLATE(color5, color2);
product2a = INTERPOLATE(color5, product2a);
} else {
product2a = INTERPOLATE(color2, color3);
}
} 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) {
product1b = product2a = color2;
product1a = product2b = INTERPOLATE(color5, color6);
} else if (r < 0) {
product2b = product1a = color5;
product1b = product2a = INTERPOLATE(color5, color6);
} else {
product2b = product1a = color5;
product1b = product2a = color2;
}
} else {
product2b = product1a = INTERPOLATE(color2, color6);
product2b = Q_INTERPOLATE(color3, color3, color3, product2b);
product1a = Q_INTERPOLATE(color5, color5, color5, product1a);
product2a = product1b = INTERPOLATE(color5, color3);
product2a = Q_INTERPOLATE(color2, color2, color2, product2a);
product1b = Q_INTERPOLATE(color6, color6, color6, product1b);
}
#ifdef SCUMM_LITTLE_ENDIAN
product1a = product1a | (product1b << 16);
product2a = product2a | (product2b << 16);
#endif
#ifdef SCUMM_BIG_ENDIAN
product1a = product1b | (product1a << 16);
product2a = product2b | (product2a << 16);
#endif
*((uint32 *)dP) = product1a;
*((uint32 *)(dP + dstPitch)) = product2a;
bP += inc_bP;
dP += sizeof(uint32);
} // end of for ( finish= width etc..)
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
} // endof: while (height--)
}
void _2xSaI(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *dP;
const uint16 *bP;
const uint32 inc_bP = 1;
const uint32 Nextline = srcPitch >> 1;
while (height--) {
bP = (const uint16 *)srcPtr;
dP = dstPtr;
for (uint32 finish = width; finish; finish -= inc_bP) {
register uint32 colorA, colorB;
uint32 colorC, colorD,
colorE, colorF, colorG, colorH, colorI, colorJ, colorK, colorL, colorM, colorN, colorO, colorP;
uint32 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 - Nextline - 1);
colorE = *(bP - Nextline);
colorF = *(bP - Nextline + 1);
colorJ = *(bP - Nextline + 2);
colorG = *(bP - 1);
colorA = *(bP);
colorB = *(bP + 1);
colorK = *(bP + 2);
colorH = *(bP + Nextline - 1);
colorC = *(bP + Nextline);
colorD = *(bP + Nextline + 1);
colorL = *(bP + Nextline + 2);
colorM = *(bP + Nextline + Nextline - 1);
colorN = *(bP + Nextline + Nextline);
colorO = *(bP + Nextline + Nextline + 1);
colorP = *(bP + Nextline + Nextline + 2);
if ((colorA == colorD) && (colorB != colorC)) {
if (((colorA == colorE) && (colorB == colorL)) || ((colorA == colorC) && (colorA == colorF)
&& (colorB != colorE)
&& (colorB == colorJ))) {
product = colorA;
} else {
product = INTERPOLATE(colorA, colorB);
}
if (((colorA == colorG) && (colorC == colorO)) || ((colorA == colorB) && (colorA == colorH)
&& (colorG != colorC)
&& (colorC == colorM))) {
product1 = colorA;
} else {
product1 = INTERPOLATE(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(colorA, colorB);
}
if (((colorC == colorH) && (colorA == colorF)) || ((colorC == colorG) && (colorC == colorD)
&& (colorA != colorH)
&& (colorA == colorI))) {
product1 = colorC;
} else {
product1 = INTERPOLATE(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(colorA, colorC);
product = INTERPOLATE(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 = Q_INTERPOLATE(colorA, colorB, colorC, colorD);
}
}
} else {
product2 = Q_INTERPOLATE(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(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(colorA, colorC);
}
}
#ifdef SCUMM_LITTLE_ENDIAN
product = colorA | (product << 16);
product1 = product1 | (product2 << 16);
#endif
#ifdef SCUMM_BIG_ENDIAN
product = (colorA << 16) | product;
product1 = (product1 << 16) | product2;
#endif
*((int32 *)dP) = product;
*((uint32 *)(dP + dstPitch)) = product1;
bP += inc_bP;
dP += sizeof(uint32);
} // end of for ( finish= width etc..)
srcPtr += srcPitch;
dstPtr += dstPitch * 2;
} // endof: while (height--)
}
void AdvMame2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
const uint16 *p = (const uint16 *)srcPtr;
unsigned int nextlineDst = dstPitch / sizeof(uint16);
uint16 *q = (uint16 *)dstPtr;
uint16 A, B, C;
uint16 D, E, F;
uint16 G, H, I;
while (height--) {
B = *(p - 1 - nextlineSrc);
E = *(p - 1);
H = *(p - 1 + nextlineSrc);
C = *(p - nextlineSrc);
F = *(p);
I = *(p + nextlineSrc);
for (int i = 0; i < width; ++i) {
p++;
A = B; B = C; C = *(p - nextlineSrc);
D = E; E = F; F = *(p);
G = H; H = I; I = *(p + nextlineSrc);
*(q) = D == B && B != F && D != H ? D : E;
*(q + 1) = B == F && B != D && F != H ? F : E;
*(q + nextlineDst) = D == H && D != B && H != F ? D : E;
*(q + nextlineDst + 1) = H == F && D != H && B != F ? F : E;
q += 2;
}
p += nextlineSrc - width;
q += (nextlineDst - width) << 1;
}
}
void AdvMame3x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
const uint16 *p = (const uint16 *)srcPtr;
unsigned int nextlineDst = dstPitch / sizeof(uint16);
uint16 *q = (uint16 *)dstPtr;
uint16 A, B, C;
uint16 D, E, F;
uint16 G, H, I;
while (height--) {
B = *(p - 1 - nextlineSrc);
E = *(p - 1);
H = *(p - 1 + nextlineSrc);
C = *(p - nextlineSrc);
F = *(p);
I = *(p + nextlineSrc);
for (int i = 0; i < width; ++i) {
p++;
A = B; B = C; C = *(p - nextlineSrc);
D = E; E = F; F = *(p);
G = H; H = I; I = *(p + nextlineSrc);
*(q) = D == B && B != F && D != H ? D : E;
*(q + 1) = E;
*(q + 2) = B == F && B != D && F != H ? F : E;
*(q + nextlineDst) = E;
*(q + nextlineDst + 1) = E;
*(q + nextlineDst + 2) = E;
*(q + 2 * nextlineDst) = D == H && D != B && H != F ? D : E;
*(q + 2 * nextlineDst + 1) = E;
*(q + 2 * nextlineDst + 2) = H == F && D != H && B != F ? F : E;
q += 3;
}
p += nextlineSrc - width;
q += (nextlineDst - width) * 3;
}
}
void Normal1x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
while (height--) {
memcpy(dstPtr, srcPtr, 2 * width);
srcPtr += srcPitch;
dstPtr += dstPitch;
}
}
void Normal2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
uint8 *r;
while (height--) {
r = dstPtr;
for (int i = 0; i < width; ++i, r += 4) {
uint16 color = *(((const uint16 *)srcPtr) + i);
*(uint16 *)(r + 0) = color;
*(uint16 *)(r + 2) = color;
*(uint16 *)(r + 0 + dstPitch) = color;
*(uint16 *)(r + 2 + dstPitch) = color;
}
srcPtr += srcPitch;
dstPtr += dstPitch << 1;
}
}
void Normal3x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
uint8 *r;
uint32 dstPitch2 = dstPitch * 2;
uint32 dstPitch3 = dstPitch * 3;
while (height--) {
r = dstPtr;
for (int i = 0; i < width; ++i, r += 6) {
uint16 color = *(((const uint16 *)srcPtr) + i);
*(uint16 *)(r + 0) = color;
*(uint16 *)(r + 2) = color;
*(uint16 *)(r + 4) = color;
*(uint16 *)(r + 0 + dstPitch) = color;
*(uint16 *)(r + 2 + dstPitch) = color;
*(uint16 *)(r + 4 + dstPitch) = color;
*(uint16 *)(r + 0 + dstPitch2) = color;
*(uint16 *)(r + 2 + dstPitch2) = color;
*(uint16 *)(r + 4 + dstPitch2) = color;
}
srcPtr += srcPitch;
dstPtr += dstPitch3;
}
}
void TV2x(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height) {
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
const uint16 *p = (const uint16 *)srcPtr;
unsigned int nextlineDst = dstPitch / sizeof(uint16);
uint16 *q = (uint16 *)dstPtr;
while(height--) {
for (int i = 0, j = 0; i < width; ++i, j += 2) {
uint16 p1 = *(p + i);
uint32 pi;
pi = (((p1 & redblueMask) * 7) >> 3) & redblueMask;
pi |= (((p1 & greenMask) * 7) >> 3) & greenMask;
*(q + j) = p1;
*(q + j + 1) = p1;
*(q + j + nextlineDst) = (uint16)pi;
*(q + j + nextlineDst + 1) = (uint16)pi;
}
p += nextlineSrc;
q += nextlineDst << 1;
}
}
static inline uint16 DOT_16(uint16 c, int j, int i) {
return c - ((c >> 2) & *(dotmatrix + ((j & 3) << 2) + (i & 3)));
}
void DotMatrix(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height)
{
unsigned int nextlineSrc = srcPitch / sizeof(uint16);
const uint16 *p = (const uint16 *)srcPtr;
unsigned int nextlineDst = dstPitch / sizeof(uint16);
uint16 *q = (uint16 *)dstPtr;
for (int j = 0, jj = 0; j < height; ++j, jj += 2) {
for (int i = 0, ii = 0; i < width; ++i, ii += 2) {
uint16 c = *(p + i);
*(q + ii) = DOT_16(c, jj, ii);
*(q + ii + 1) = DOT_16(c, jj, ii + 1);
*(q + ii + nextlineDst) = DOT_16(c, jj + 1, ii);
*(q + ii + nextlineDst + 1) = DOT_16(c, jj + 1, ii + 1);
}
p += nextlineSrc;
q += nextlineDst << 1;
}
}