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engines/hugo/sound.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/>.
+ *
+ */
+
+/*
+ * This code is based on original Hugo Trilogy source code
+ *
+ * Copyright (c) 1989-1995 David P. Gray
+ *
+ */
+
+#ifndef HUGO_SOUND_H
+#define HUGO_SOUND_H
+
+#include "audio/mixer.h"
+#include "audio/midiplayer.h"
+
+namespace Audio {
+class PCSpeaker;
+}
+
+namespace Hugo {
+
+class MidiPlayer : public Audio::MidiPlayer {
+public:
+	MidiPlayer();
+
+	void pause(bool p);
+	void play(uint8 *stream, uint16 size);
+
+	// The following line prevents compiler warnings about hiding the pause()
+	// method from the parent class.
+	// FIXME: Maybe the pause(bool p) method should be removed and the
+	// pause/resume methods of the parent class be used instead?
+	void pause() override { Audio::MidiPlayer::pause(); }
+
+	uint32 getBaseTempo();
+
+	// Overload Audio::MidiPlayer method
+	void sendToChannel(byte channel, uint32 b) override;
+	void onTimer() override;
+
+private:
+	bool _paused;
+};
+
+class SoundHandler {
+public:
+	SoundHandler(HugoEngine *vm);
+	~SoundHandler();
+
+	static const int kHugoCNT = 1190000;
+
+	int8 _pcspkrTimer;                              // Timer (ticks) for note being played
+	int8 _pcspkrOctave;                             // Current octave 1..7
+	int8 _pcspkrNoteDuration;                       // Current length of note (ticks)
+
+	const char *_DOSSongPtr;
+	const char *_DOSIntroSong;
+
+	void toggleMusic();
+	void toggleSound();
+	void setMusicVolume();
+	static void loopPlayer(void *refCon);
+	void pcspkr_player();
+	void playMusic(int16 tune);
+	void playSound(int16 sound, const byte priority);
+	void initSound();
+	void syncVolume();
+	void checkMusic();
+	void loadIntroSong(Common::ReadStream &in);
+	void initPcspkrPlayer();
+protected:
+	byte _curPriority;                              // Priority of currently playing sound
+
+private:
+	HugoEngine *_vm;
+	Audio::SoundHandle _soundHandle;
+	MidiPlayer *_midiPlayer;
+	Audio::PCSpeaker *_speaker;
+
+	void stopSound();
+	void stopMusic();
+	void playMIDI(SoundPtr seqPtr, uint16 size);
+};
+
+} // End of namespace Hugo
+
+#endif //HUGO_SOUND_H