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scummvm/2xsai.cpp
James Brown 4cc43b3679 Add new Scale mode. Thanks Gregory Montoir. 
svn-id: r4069
2002-04-24 07:42:29 +00:00

764 lines
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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001/2002 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"
/********** 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;
int Init_2xSaI(uint32 BitFormat)
{
if (BitFormat == 565) {
colorMask = 0xF7DEF7DE;
lowPixelMask = 0x08210821;
qcolorMask = 0xE79CE79C;
qlowpixelMask = 0x18631863;
redblueMask = 0xF81F;
greenMask = 0x7E0;
} else if (BitFormat == 555) {
colorMask = 0x7BDE7BDE;
lowPixelMask = 0x04210421;
qcolorMask = 0x739C739C;
qlowpixelMask = 0x0C630C63;
redblueMask = 0x7C1F;
greenMask = 0x3E0;
} else {
return 0;
}
return 1;
}
static inline int GetResult1(uint32 A, uint32 B, uint32 C, uint32 D,
uint32 /* E */ )
{
int x = 0;
int y = 0;
int r = 0;
if (A == C)
x += 1;
else if (B == C)
y += 1;
if (A == D)
x += 1;
else if (B == D)
y += 1;
if (x <= 1)
r += 1;
if (y <= 1)
r -= 1;
return r;
}
static inline int GetResult2(uint32 A, uint32 B, uint32 C, uint32 D,
uint32 /* E */ )
{
int x = 0;
int y = 0;
int r = 0;
if (A == C)
x += 1;
else if (B == C)
y += 1;
if (A == D)
x += 1;
else if (B == D)
y += 1;
if (x <= 1)
r -= 1;
if (y <= 1)
r += 1;
return r;
}
static inline int GetResult(uint32 A, uint32 B, uint32 C, uint32 D)
{
int x = 0;
int y = 0;
int r = 0;
if (A == C)
x += 1;
else if (B == C)
y += 1;
if (A == D)
x += 1;
else if (B == D)
y += 1;
if (x <= 1)
r += 1;
if (y <= 1)
r -= 1;
return r;
}
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;
}
#define BLUE_MASK565 0x001F001F
#define RED_MASK565 0xF800F800
#define GREEN_MASK565 0x07E007E0
#define BLUE_MASK555 0x001F001F
#define RED_MASK555 0x7C007C00
#define GREEN_MASK555 0x03E003E0
void Super2xSaI(uint8 *srcPtr, uint32 srcPitch,
uint8 *deltaPtr, uint8 *dstPtr, uint32 dstPitch,
int width, int height)
{
uint16 *bP;
uint8 *dP;
uint32 inc_bP;
{
uint32 Nextline = srcPitch >> 1;
inc_bP = 1;
while (height--) {
bP = (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,
colorB0, colorB1, colorB2, colorB3, 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;
deltaPtr += srcPitch;
} // while (height--)
}
}
void SuperEagle(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr,
uint8 *dstPtr, uint32 dstPitch, int width, int height)
{
uint8 *dP;
uint16 *bP;
uint32 inc_bP;
{
inc_bP = 1;
uint32 Nextline = srcPitch >> 1;
while (height--) {
bP = (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;
deltaPtr += srcPitch;
} // endof: while (height--)
}
}
void _2xSaI(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr,
uint8 *dstPtr, uint32 dstPitch, int width, int height)
{
uint8 *dP;
uint16 *bP;
uint32 inc_bP;
{
inc_bP = 1;
uint32 Nextline = srcPitch >> 1;
while (height--) {
bP = (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 += GetResult1(colorA, colorB, colorG, colorE, colorI);
r += GetResult2(colorB, colorA, colorK, colorF, colorJ);
r += GetResult2(colorB, colorA, colorH, colorN, colorM);
r += GetResult1(colorA, colorB, colorL, colorO, colorP);
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;
deltaPtr += srcPitch;
} // endof: while (height--)
}
}
static uint32 Bilinear(uint32 A, uint32 B, uint32 x)
{
unsigned long areaA, areaB;
unsigned long result;
if (A == B)
return A;
areaB = (x >> 11) & 0x1f; // reduce 16 bit fraction to 5 bits
areaA = 0x20 - areaB;
A = (A & redblueMask) | ((A & greenMask) << 16);
B = (B & redblueMask) | ((B & greenMask) << 16);
result = ((areaA * A) + (areaB * B)) >> 5;
return (result & redblueMask) | ((result >> 16) & greenMask);
}
static uint32 Bilinear4(uint32 A, uint32 B, uint32 C, uint32 D, uint32 x,
uint32 y)
{
unsigned long areaA, areaB, areaC, areaD;
unsigned long result, xy;
x = (x >> 11) & 0x1f;
y = (y >> 11) & 0x1f;
xy = (x * y) >> 5;
A = (A & redblueMask) | ((A & greenMask) << 16);
B = (B & redblueMask) | ((B & greenMask) << 16);
C = (C & redblueMask) | ((C & greenMask) << 16);
D = (D & redblueMask) | ((D & greenMask) << 16);
areaA = 0x20 + xy - x - y;
areaB = x - xy;
areaC = y - xy;
areaD = xy;
result = ((areaA * A) + (areaB * B) + (areaC * C) + (areaD * D)) >> 5;
return (result & redblueMask) | ((result >> 16) & greenMask);
}
void Scale_2xSaI(uint8 *srcPtr, uint32 srcPitch, uint8 * /* deltaPtr */ ,
uint8 *dstPtr, uint32 dstPitch,
uint32 dstWidth, uint32 dstHeight, int width, int height)
{
uint8 *dP;
uint16 *bP;
uint32 w;
uint32 h;
uint32 dw;
uint32 dh;
uint32 hfinish;
uint32 wfinish;
uint32 Nextline = srcPitch >> 1;
wfinish = (width - 1) << 16; // convert to fixed point
dw = wfinish / (dstWidth - 1);
hfinish = (height - 1) << 16; // convert to fixed point
dh = hfinish / (dstHeight - 1);
for (h = 0; h < hfinish; h += dh) {
uint32 y1, y2;
y1 = h & 0xffff; // fraction part of fixed point
bP = (uint16 *)(srcPtr + ((h >> 16) * srcPitch));
dP = dstPtr;
y2 = 0x10000 - y1;
w = 0;
for (; w < wfinish;) {
uint32 A, B, C, D;
uint32 E, F, G, H;
uint32 I, J, K, L;
uint32 x1, x2, a1, f1, f2;
uint32 position, product1;
position = w >> 16;
A = bP[position]; // current pixel
B = bP[position + 1]; // next pixel
C = bP[position + Nextline];
D = bP[position + Nextline + 1];
E = bP[position - Nextline];
F = bP[position - Nextline + 1];
G = bP[position - 1];
H = bP[position + Nextline - 1];
I = bP[position + 2];
J = bP[position + Nextline + 2];
K = bP[position + Nextline + Nextline];
L = bP[position + Nextline + Nextline + 1];
x1 = w & 0xffff; // fraction part of fixed point
x2 = 0x10000 - x1;
/*0 */
if (A == B && C == D && A == C)
product1 = A;
else
/*1 */
if (A == D && B != C) {
f1 = (x1 >> 1) + (0x10000 >> 2);
f2 = (y1 >> 1) + (0x10000 >> 2);
if (y1 <= f1 && A == J && A != E) // close to B
{
a1 = f1 - y1;
product1 = Bilinear(A, B, a1);
} else if (y1 >= f1 && A == G && A != L) // close to C
{
a1 = y1 - f1;
product1 = Bilinear(A, C, a1);
} else if (x1 >= f2 && A == E && A != J) // close to B
{
a1 = x1 - f2;
product1 = Bilinear(A, B, a1);
} else if (x1 <= f2 && A == L && A != G) // close to C
{
a1 = f2 - x1;
product1 = Bilinear(A, C, a1);
} else if (y1 >= x1) // close to C
{
a1 = y1 - x1;
product1 = Bilinear(A, C, a1);
} else if (y1 <= x1) // close to B
{
a1 = x1 - y1;
product1 = Bilinear(A, B, a1);
}
} else
/*2 */
if (B == C && A != D) {
f1 = (x1 >> 1) + (0x10000 >> 2);
f2 = (y1 >> 1) + (0x10000 >> 2);
if (y2 >= f1 && B == H && B != F) // close to A
{
a1 = y2 - f1;
product1 = Bilinear(B, A, a1);
} else if (y2 <= f1 && B == I && B != K) // close to D
{
a1 = f1 - y2;
product1 = Bilinear(B, D, a1);
} else if (x2 >= f2 && B == F && B != H) // close to A
{
a1 = x2 - f2;
product1 = Bilinear(B, A, a1);
} else if (x2 <= f2 && B == K && B != I) // close to D
{
a1 = f2 - x2;
product1 = Bilinear(B, D, a1);
} else if (y2 >= x1) // close to A
{
a1 = y2 - x1;
product1 = Bilinear(B, A, a1);
} else if (y2 <= x1) // close to D
{
a1 = x1 - y2;
product1 = Bilinear(B, D, a1);
}
}
/*3 */
else {
product1 = Bilinear4(A, B, C, D, x1, y1);
}
//end First Pixel
*(uint32 *)dP = product1;
dP += 2;
w += dw;
}
dstPtr += dstPitch;
}
}
void AdvMame2x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height)
{
unsigned int nextlineSrc = srcPitch / sizeof(short);
short* p = (short*)srcPtr;
unsigned nextlineDst = dstPitch / sizeof(short);
short* q = (short*)dstPtr;
for(int j = 0; j < height; ++j) {
for(int i = 0; i < width; ++i) {
short A = *(p + i - nextlineSrc - 1);
short B = *(p + i - nextlineSrc);
short C = *(p + i - nextlineSrc + 1);
short D = *(p + i - 1);
short E = *(p + i );
short F = *(p + i + 1);
short G = *(p + i + nextlineSrc - 1);
short H = *(p + i + nextlineSrc);
short I = *(p + i + nextlineSrc + 1);
*(q + (i << 1)) = D == B && B != F && D != H ? D : E;
*(q + (i << 1) + 1) = B == F && B != D && F != H ? F : E;
*(q + (i << 1) + nextlineDst) = D == H && D != B && H != F ? D : E;
*(q + (i << 1) + nextlineDst + 1) = H == F && D != H && B != F ? F : E;
}
p += nextlineSrc;
q += nextlineDst << 1;
}
}
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