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engines/macventure/image.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/>.
+ *
+ */
+
+/*
+ * Based on
+ * WebVenture (c) 2010, Sean Kasun
+ * https://github.com/mrkite/webventure, http://seancode.com/webventure/
+ *
+ * Used with explicit permission from the author
+ */
+
+#ifndef MACVENTURE_IMAGE_H
+#define MACVENTURE_IMAGE_H
+
+#include "macventure/macventure.h"
+#include "macventure/container.h"
+#include "common/bitstream.h"
+
+namespace MacVenture {
+
+typedef uint32 ObjID;
+class Container;
+
+
+enum BlitMode {
+	kBlitDirect = 0,
+	kBlitBIC = 1,
+	kBlitOR = 2,
+	kBlitXOR = 3
+};
+
+enum GraphicsEncoding {
+	kPPIC0 = 0,
+	kPPIC1 = 1,
+	kPPIC2 = 2,
+	kPPIC3 = 3
+};
+
+struct PPICHuff {
+	uint16 masks[17];
+	uint16 lens[17];
+	uint8 symbols[17];
+};
+
+class ImageAsset {
+public:
+	ImageAsset(ObjID original, Container *container);
+	ImageAsset(Common::SeekableReadStream *stream);
+	~ImageAsset();
+
+	void blitInto(Graphics::ManagedSurface *target, int x, int y, BlitMode mode);
+
+	bool isPointInside(Common::Point point);
+	bool isRectInside(Common::Rect rect);
+
+	int getWidth();
+	int getHeight();
+
+private:
+	void decodePPIC(Common::SeekableReadStream *baseStream, Common::Array<byte> &data, uint &bitHeight, uint &bitWidth, uint &rowBytes);
+	void decodePPIC(ObjID id, Common::Array<byte> &data, uint &bitHeight, uint &bitWidth, uint &rowBytes);
+
+	void decodePPIC0(Common::BitStream8MSB &stream, Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void decodePPIC1(Common::BitStream8MSB &stream, Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void decodePPIC2(Common::BitStream8MSB &stream, Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void decodePPIC3(Common::BitStream8MSB &stream, Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+
+	void decodeHuffGraphic(const PPICHuff &huff, Common::BitStream8MSB &stream, Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	byte walkHuff(const PPICHuff &huff, Common::BitStream8MSB &stream);
+
+	void blitDirect(Graphics::ManagedSurface *target, int ox, int oy, const Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void blitBIC(Graphics::ManagedSurface *target, int ox, int oy, const Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void blitOR(Graphics::ManagedSurface *target, int ox, int oy, const Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+	void blitXOR(Graphics::ManagedSurface *target, int ox, int oy, const Common::Array<byte> &data, uint bitHeight, uint bitWidth, uint rowBytes);
+
+	void calculateSectionToDraw(Graphics::ManagedSurface *target, int &ox, int &oy, uint bitWidth, uint bitHeight, uint &sx, uint &sy, uint &w, uint &h);
+	void calculateSectionInDirection(uint targetWhole, uint originWhole, int &originPosition, uint &startPosition, uint &blittedWhole);
+
+private:
+	ObjID _id;
+	ObjID _mask;
+	Container *_container;
+
+	uint16 _walkRepeat;
+	uint16 _walkLast;
+
+	Common::Array<byte> _imgData;
+	uint16 _imgRowBytes;
+	uint16 _imgBitWidth;
+	uint16 _imgBitHeight;
+
+	Common::Array<byte> _maskData;
+	uint16 _maskRowBytes;
+	uint16 _maskBitWidth;
+	uint16 _maskBitHeight;
+};
+
+} // End of namespace MacVenture
+
+#endif