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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 "tucker/graphics.h"
namespace Tucker {
int Graphics::encodeRLE(const uint8 *src, uint8 *dst, int w, int h) {
int sz = 0;
int count = 0;
int code = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
code = src[x];
if (code == 0) {
++count;
if (count > 200) {
dst[sz++] = 0;
dst[sz++] = count;
count = 0;
}
} else {
if (count > 0) {
dst[sz++] = 0;
dst[sz++] = count;
count = 0;
}
dst[sz++] = code;
}
}
src += 320;
}
if (count > 0) {
dst[sz++] = 0;
dst[sz++] = count;
}
return sz;
}
int Graphics::encodeRAW(const uint8 *src, uint8 *dst, int w, int h) {
for (int y = 0; y < h; ++y) {
memcpy(dst, src, w);
dst += w;
src += 320;
}
return w * h;
}
void Graphics::decodeRLE(uint8 *dst, const uint8 *src, int w, int h) {
int code = 0;
int color = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
if (code == 0) {
color = *src++;
if (color == 0) {
code = *src++;
}
}
if (color != 0) {
dst[x] = color;
} else {
--code;
}
}
dst += 640;
}
}
void Graphics::decodeRLE_224(uint8 *dst, const uint8 *src, int w, int h) {
int code = 0;
int color = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
if (code == 0) {
color = *src++;
if (color == 0) {
code = *src++;
}
}
if (color != 0) {
if (dst[x] < 0xE0) {
dst[x] = color;
}
} else {
--code;
}
}
dst += 640;
}
}
void Graphics::decodeRLE_248(uint8 *dst, const uint8 *src, int w, int h, int y1, int y2, bool xflip, bool color248Only) {
int code = 0;
int color = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
const int offset = xflip ? (w - 1 - x) : x;
if (code == 0) {
color = *src++;
if (color == 0) {
code = *src++;
}
}
if (color != 0) {
if ((color248Only || dst[offset] < 0xE0 || y + y1 < y2) && dst[offset] < 0xF8) {
dst[offset] = color;
}
} else {
--code;
}
}
dst += 640;
}
}
void Graphics::decodeRLE_320(uint8 *dst, const uint8 *src, int w, int h) {
int code = 0;
int color = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
if (code == 0) {
color = *src++;
if (color == 0) {
code = *src++;
}
}
if (code == 0) {
dst[x] = color;
} else {
--code;
}
}
dst += 320;
}
}
void Graphics::copyRect(uint8 *dst, int dstPitch, uint8 *src, int srcPitch, int w, int h) {
for (int y = 0; y < h; ++y) {
memcpy(dst, src, w);
dst += dstPitch;
src += srcPitch;
}
}
void Graphics::drawStringChar(uint8 *dst, int xDst, int yDst, int pitch, uint8 chr, uint8 chrColor, const uint8 *src) {
if (chr < 32 || chr - 32 >= _charset._xCount * _charset._yCount) {
return;
}
const int h = MIN(_charset._charH, 200 - yDst);
const int w = MIN(_charset._charW, pitch - xDst);
dst += yDst * pitch + xDst;
int offset = (chr - 32) * _charset._charH * _charset._charW;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
const int color = src[offset++];
if (color != 0) {
if (_charsetType == kCharsetTypeCredits) {
dst[x] = color;
} else {
dst[x] = (color == 128) ? color : chrColor;
}
}
}
dst += pitch;
}
}
void Graphics::setCharset(CharsetType type) {
_charsetType = type;
switch (type) {
case kCharsetTypeDefault:
_charset._charW = 10;
_charset._charH = 10;
_charset._xCount = 32;
_charset._yCount = 7;
break;
case kCharsetTypeEng:
_charset._charW = 10;
_charset._charH = 8;
_charset._xCount = 32;
_charset._yCount = 3;
break;
case kCharsetTypeCredits:
_charset._charW = 19;
_charset._charH = 10;
_charset._xCount = 16;
_charset._yCount = 7;
break;
}
}
Charset Graphics::_charset;
CharsetType Graphics::_charsetType;
} // namespace Tucker
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