Initial commit

engines/tucker/graphics.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#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, const int *whitelistReservedColors) {
+	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 (( (whitelistReservedColors != nullptr && (dst[offset] & 0xE0) == 0xE0 && *(whitelistReservedColors + dst[offset] - 0xE0) == 1) || 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 < _charset._charH; ++y) {
+		for (int x = 0; x < _charset._charW; ++x, ++offset) {
+			const int color = src[offset];
+			if (y < h && x < w && 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) {
+	default:
+	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