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engines/buried/avi_frames.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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995 Presto Studios, Inc.
+ *
+ * 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 BURIED_AVI_FRAMES_H
+#define BURIED_AVI_FRAMES_H
+
+#include "common/list.h"
+#include "common/scummsys.h"
+#include "common/path.h"
+
+namespace Graphics {
+struct Surface;
+}
+
+namespace Video {
+class VideoDecoder;
+}
+
+namespace Buried {
+
+class AVIFrames {
+public:
+	AVIFrames(const Common::Path &fileName = Common::Path(), uint cachedFrames = 0);
+	~AVIFrames();
+
+	bool open(const Common::Path &fileName, uint cachedFrames = 0);
+	void close();
+
+	const Graphics::Surface *getFrame(int frameIndex);
+	Graphics::Surface *getFrameCopy(int frameIndex);
+
+	int getFrameCount();
+
+	void enableFrameCache(bool enable) { _cacheEnabled = enable; }
+	bool flushFrameCache();
+
+private:
+	const Graphics::Surface *retrieveFrameFromCache(int frameIndex) const;
+	void addFrameToCache(int frameIndex, Graphics::Surface *frame);
+
+	struct CachedFrame {
+		CachedFrame(int i, Graphics::Surface *f) : index(i), frame(f) {}
+
+		int index;
+		Graphics::Surface *frame;
+	};
+
+	typedef Common::List<CachedFrame> FrameList;
+
+	Common::Path _fileName;
+	FrameList _cachedFrames;
+	uint _maxCachedFrames;
+	Video::VideoDecoder *_video;
+	bool _cacheEnabled;
+
+	const Graphics::Surface *_lastFrame;
+	Graphics::Surface *_tempFrame;
+	int _lastFrameIndex;
+};
+
+} // End of namespace Buried
+
+#endif