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engines/awe/resource.h

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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/>.
+ *
+ */
+
+#ifndef AWE_RESOURCE_H
+#define AWE_RESOURCE_H
+
+#include "awe/detection.h"
+#include "awe/intern.h"
+
+namespace Awe {
+
+struct MemEntry {
+	uint8 status = 0;        // 0x0
+	uint8 type = 0;          // 0x1, Resource::ResType
+	uint8 *bufPtr = nullptr; // 0x2
+	uint8 rankNum = 0;       // 0x6
+	uint8 bankNum = 0;       // 0x7
+	uint32 bankPos = 0;      // 0x8
+	uint32 packedSize = 0;   // 0xC
+	uint32 unpackedSize = 0; // 0x12
+
+	void load(Common::SeekableReadStream *src);
+};
+
+struct AmigaMemEntry {
+	uint8 type;
+	uint8 bank;
+	uint32 offset;
+	uint32 packedSize;
+	uint32 unpackedSize;
+};
+
+struct DemoJoy {
+	uint8 keymask = 0;
+	uint8 counter = 0;
+
+	uint8 *bufPtr = nullptr;
+	int bufPos = 0, bufSize = 0;
+
+	bool start() {
+		if (bufSize > 0) {
+			keymask = bufPtr[0];
+			counter = bufPtr[1];
+			bufPos = 2;
+			return true;
+		}
+		return false;
+	}
+
+	uint8 update() {
+		if (bufPos >= 0 && bufPos < bufSize) {
+			if (counter == 0) {
+				keymask = bufPtr[bufPos++];
+				counter = bufPtr[bufPos++];
+			} else {
+				--counter;
+			}
+			return keymask;
+		}
+		return 0;
+	}
+};
+
+struct ResourceNth;
+struct ResourceWin31;
+struct Resource3do;
+struct Video;
+
+typedef void (*PreloadSoundProc)(void *userdata, int num, const uint8 *data);
+
+struct Resource {
+	enum ResType {
+		RT_SOUND = 0,
+		RT_MUSIC = 1,
+		RT_BITMAP = 2, // full screen 4bpp video buffer, size=200*320/2
+		RT_PALETTE = 3, // palette (1024=vga + 1024=ega), size=2048
+		RT_BYTECODE = 4,
+		RT_SHAPE = 5,
+		RT_BANK = 6, // common part shapes (bank2.mat)
+	};
+
+	enum {
+		MEM_BLOCK_SIZE = 1 * 1024 * 1024,
+		ENTRIES_COUNT = 146,
+		ENTRIES_COUNT_20TH = 178,
+	};
+
+	enum {
+		STATUS_NULL,
+		STATUS_LOADED,
+		STATUS_TOLOAD,
+	};
+
+	static const AmigaMemEntry MEMLIST_AMIGA_FR[ENTRIES_COUNT];
+	static const AmigaMemEntry MEMLIST_AMIGA_EN[ENTRIES_COUNT];
+	static const AmigaMemEntry MEMLIST_ATARI_EN[ENTRIES_COUNT];
+	static const uint8 MEMLIST_PARTS[][4];
+	static const AmigaMemEntry *detectAmigaAtari();
+
+	Video *_vid;
+	DataType _dataType;
+	MemEntry _memList[ENTRIES_COUNT_20TH];
+	uint16 _numMemList = 0;
+	uint16 _currentPart = 0, _nextPart = 0;
+	uint8 *_memPtrStart = nullptr,
+		*_scriptBakPtr = nullptr,
+		*_scriptCurPtr = nullptr,
+		*_vidCurPtr = nullptr;
+	bool _useSegVideo2 = false;
+	uint8 *_segVideoPal = nullptr;
+	uint8 *_segCode = nullptr;
+	uint8 *_segVideo1 = nullptr;
+	uint8 *_segVideo2 = nullptr;
+	const char *_bankPrefix = "bank";
+	bool _hasPasswordScreen = true;
+	ResourceNth *_nth = nullptr;
+	ResourceWin31 *_win31 = nullptr;
+	Resource3do *_3do = nullptr;
+	Language _lang = Language::EN_ANY;
+	const AmigaMemEntry *_amigaMemList;
+	DemoJoy _demo3Joy;
+	bool _copyProtection = false;
+
+	Resource(Video *vid, DataType dataType);
+	~Resource();
+
+	DataType getDataType() const {
+		return _dataType;
+	}
+	const char *getGameTitle(Language lang) const;
+	bool readBank(const MemEntry *me, uint8 *dstBuf);
+	void readEntries();
+	void readEntriesAmiga(const AmigaMemEntry *entries, int count);
+	void dumpEntries();
+	void load();
+	void invalidateAll();
+	void invalidateRes();
+	void update(uint16 num, PreloadSoundProc, void *);
+	void loadBmp(int num);
+	uint8 *loadDat(int num);
+	void loadFont();
+	void loadHeads();
+	uint8 *loadWav(int num, uint32 *size = nullptr);
+	const char *getString(int num);
+	const char *getMusicPath(int num, char *buf, int bufSize, uint32 *offset = nullptr);
+	void setupPart(int part);
+	void allocMemBlock();
+	void freeMemBlock();
+	void readDemo3Joy();
+};
+
+} // namespace Awe
+
+#endif