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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.
*
* $URL$
* $Id$
*
*/
#include "common/endian.h"
#include "kyra/kyra_hof.h"
#include "kyra/screen_hof.h"
namespace Kyra {
Screen_HoF::Screen_HoF(KyraEngine_HoF *vm, OSystem *system)
: Screen_v2(vm, system), _vm(vm) {
}
void Screen_HoF::setScreenDim(int dim) {
assert(dim < _screenDimTableCount);
_curDim = &_screenDimTable[dim];
}
const ScreenDim *Screen_HoF::getScreenDim(int dim) {
assert(dim < _screenDimTableCount);
return &_screenDimTable[dim];
}
void Screen_HoF::generateGrayOverlay(const uint8 *srcPal, uint8 *grayOverlay, int factor, int addR, int addG, int addB, int lastColor, bool flag) {
uint8 tmpPal[768];
for (int i = 0; i != lastColor; i++) {
if (flag) {
int v = ((((srcPal[3 * i] & 0x3f) + (srcPal[3 * i + 1] & 0x3f)
+ (srcPal[3 * i + 2] & 0x3f)) / 3) * factor) / 0x40;
tmpPal[3 * i] = tmpPal[3 * i + 1] = tmpPal[3 * i + 2] = v & 0xff;
} else {
int v = (((srcPal[3 * i] & 0x3f) * factor) / 0x40) + addR;
tmpPal[3 * i] = (v > 0x3f) ? 0x3f : v & 0xff;
v = (((srcPal[3 * i + 1] & 0x3f) * factor) / 0x40) + addG;
tmpPal[3 * i + 1] = (v > 0x3f) ? 0x3f : v & 0xff;
v = (((srcPal[3 * i + 2] & 0x3f) * factor) / 0x40) + addB;
tmpPal[3 * i + 2] = (v > 0x3f) ? 0x3f : v & 0xff;
}
}
for (int i = 0; i < lastColor; i++)
grayOverlay[i] = findLeastDifferentColor(tmpPal + 3 * i, srcPal, lastColor);
}
void Screen_HoF::cmpFadeFrameStep(int srcPage, int srcW, int srcH, int srcX, int srcY, int dstPage, int dstW,
int dstH, int dstX, int dstY, int cmpW, int cmpH, int cmpPage) {
if (!cmpW || !cmpH)
return;
int r1, r2, r3, r4, r5, r6;
int X1 = srcX;
int Y1 = srcY;
int W1 = cmpW;
int H1 = cmpH;
if (!calcBounds(srcW, srcH, X1, Y1, W1, H1, r1, r2, r3))
return;
int X2 = dstX;
int Y2 = dstY;
int W2 = W1;
int H2 = H1;
if (!calcBounds(dstW, dstH, X2, Y2, W2, H2, r4, r5, r6))
return;
const uint8 *src = getPagePtr(srcPage) + srcW * (Y1 + r5);
uint8 *dst = getPagePtr(dstPage) + dstW * (Y2 + r2);
const uint8 *cmp = getPagePtr(cmpPage);
while (H2--) {
const uint8 *s = src + r4 + X1;
uint8 *d = dst + r1 + X2;
for (int i = 0; i < W2; i++) {
int ix = (*s++ << 8) + *d;
*d++ = cmp[ix];
}
src += W1;
dst += W2;
}
}
void Screen_HoF::copyPageMemory(int srcPage, int srcPos, int dstPage, int dstPos, int numBytes) {
const uint8 *src = getPagePtr(srcPage) + srcPos;
uint8 *dst = getPagePtr(dstPage) + dstPos;
memcpy(dst, src, numBytes);
}
void Screen_HoF::copyRegionEx(int srcPage, int srcW, int srcH, int dstPage, int dstX, int dstY, int dstW, int dstH, const ScreenDim *dim, bool flag) {
int x0 = dim->sx << 3;
int y0 = dim->sy;
int w0 = dim->w << 3;
int h0 = dim->h;
int x1 = dstX;
int y1 = dstY;
int w1 = dstW;
int h1 = dstH;
int x2, y2, w2;
calcBounds(w0, h0, x1, y1, w1, h1, x2, y2, w2);
const uint8 *src = getPagePtr(srcPage) + (320 * srcH) + srcW;
uint8 *dst = getPagePtr(dstPage) + 320 * (y0 + y1);
for (int y = 0; y < h1; y++) {
const uint8 *s = src + x2;
uint8 *d = dst + x0 + x1;
if (flag)
d += (h1 >> 1);
for (int x = 0; x < w1; x++) {
if (*s)
*d = *s;
s++;
d++;
}
dst += 320;
src += 320;
}
}
} // end of namespace Kyra
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