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engines/grim/movie/codecs/smush_decoder.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 GRIM_SMUSH_DECODER_H
+#define GRIM_SMUSH_DECODER_H
+
+#include "audio/audiostream.h"
+
+#include "video/video_decoder.h"
+
+#include "graphics/surface.h"
+
+namespace Audio {
+class QueuingAudioStream;
+}
+
+namespace Grim {
+
+class Codec48Decoder;
+class Blocky8;
+class Blocky16;
+
+class SmushDecoder : public Video::VideoDecoder {
+public:
+	SmushDecoder();
+	~SmushDecoder();
+
+	int getX() const { return _videoTrack->_x; }
+	int getY() const { return _videoTrack->_y; }
+	void setLooping(bool l);
+	bool isRewindable() const override { return true; }
+	bool isSeekable() const override { return true; }
+	bool rewind() override;
+	bool seekIntern(const Audio::Timestamp &time) override;
+	bool loadStream(Common::SeekableReadStream *stream) override;
+
+protected:
+	bool readHeader();
+	void handleFrameDemo();
+	void handleFrame();
+	bool handleFramesHeader();
+	void handleFRME(Common::SeekableReadStream *stream, uint32 size);
+	void init();
+	void close() override;
+	const Graphics::Surface *decodeNextFrame() override;
+	class SmushVideoTrack : public FixedRateVideoTrack {
+	public:
+		SmushVideoTrack(int width, int height, int fps, int numFrames, bool is16Bit);
+		~SmushVideoTrack();
+
+		uint16 getWidth() const override { return _width; }
+		uint16 getHeight() const override { return _height; }
+		Graphics::PixelFormat getPixelFormat() const override { return _format; }
+		int getCurFrame() const override { return _curFrame; }
+		void setCurFrame(int frame) { _curFrame = frame; }
+		int getFrameCount() const override { return _nbframes; }
+		Common::Rational getFrameRate() const override { return _frameRate; }
+		void setMsPerFrame(int ms);
+
+		void finishFrame();
+		bool isSeekable() const override { return true; }
+		bool seek(const Audio::Timestamp &time) override { return true; }
+		void setFrameStart(int frame);
+
+		void handleBlocky16(Common::SeekableReadStream *stream, uint32 size);
+		void handleFrameObject(Common::SeekableReadStream *stream, uint32 size);
+		void handleDeltaPalette(Common::SeekableReadStream *stream, int32 size);
+		void init();
+		Graphics::Surface *decodeNextFrame() override;
+		const byte *getPalette() const override { _dirtyPalette = false; return _palette; }
+		bool hasDirtyPalette() const override { return _dirtyPalette; }
+
+		byte *getPal() { _dirtyPalette = true; return _palette; }
+		int _x, _y;
+	private:
+		void convertDemoFrame();
+		bool _is16Bit;
+		int32 _curFrame;
+		byte _palette[0x300];
+		int16 _deltaPal[0x300];
+		mutable bool _dirtyPalette;
+		int _width, _height;
+		Graphics::Surface _surface;
+		Graphics::PixelFormat _format;
+		Common::Rational _frameRate;
+		Blocky8 *_blocky8;
+		Blocky16 *_blocky16;
+		Codec48Decoder *_codec48;
+		int32 _nbframes;
+		int _frameStart;
+	};
+
+	class SmushAudioTrack : public AudioTrack {
+	public:
+		SmushAudioTrack(Audio::Mixer::SoundType soundType, bool isVima, int freq = 22050, int channels = -1);
+		~SmushAudioTrack();
+
+		Audio::AudioStream *getAudioStream() const override { return _queueStream; }
+		bool isSeekable() const override { return true; }
+		bool seek(const Audio::Timestamp &time) override;
+		void skipSamples(int samples);
+		inline int getRate() const { return _queueStream->getRate(); }
+
+		void handleVIMA(Common::SeekableReadStream *stream, uint32 size);
+		void handleIACT(Common::SeekableReadStream *stream, int32 size);
+		void init();
+	private:
+		bool _isVima;
+		byte _IACToutput[4096];
+		int32 _IACTpos;
+		int _channels;
+		int _freq;
+		Audio::QueuingAudioStream *_queueStream;
+	};
+private:
+	void initFrames();
+
+	SmushAudioTrack *_audioTrack;
+	SmushVideoTrack *_videoTrack;
+
+	Common::SeekableReadStream *_file;
+
+	uint32 _startPos;
+
+	bool _videoPause;
+	bool _videoLooping;
+	struct Frame {
+		int frame;
+		int pos;
+		bool keyframe;
+	};
+	Frame *_frames;
+	static bool _demo;
+};
+
+} // end of namespace Grim
+
+#endif