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engines/startrek/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/>.
+ *
+ */
+
+#ifndef STARTREK_SOUND_H
+#define STARTREK_SOUND_H
+
+#include "startrek/soundeffects.h"
+#include "startrek/startrek.h"
+
+#include "audio/midiparser.h"
+#include "audio/mididrv.h"
+#include "audio/mixer.h"
+
+namespace Common {
+class MacResManager;
+}
+
+namespace StarTrek {
+
+class StarTrekEngine;
+
+
+// Max # of VOC files that can play at once
+const int MAX_SFX_PLAYING = 4;
+
+const int NUM_MIDI_SLOTS = 8;
+
+struct MidiPlaybackSlot {
+	int slot;
+	int track;
+	MidiParser *midiParser;
+};
+
+
+class Sound {
+public:
+	Sound(StarTrekEngine *vm);
+	~Sound();
+
+	void clearAllMidiSlots();
+	/**
+	 * Plays a midi track as a sound effect (one of midi slots 1-7)
+	 */
+	void playMidiTrack(MidiTracks track);
+	void playMidiTrackInSlot(int slot, MidiTracks track);
+	bool isMidiPlaying();
+	void loadMusicFile(const Common::String &baseSoundName);
+	void playMidiMusicTracks(MidiTracks startTrack, MidiLoopType loopType = kLoopTypeNone);
+	void playVoc(const Common::String &baseSoundName);
+	void playSpeech(const Common::String &basename);
+	void stopAllVocSounds();
+	void stopPlayingSpeech();
+	void playSoundEffectIndex(SoundEffects index);
+	void setMusicEnabled(bool enable);
+	void setSfxEnabled(bool enable);
+	void toggleMusic();
+	void toggleSfx();
+	void checkLoopMusic();
+
+private:
+	StarTrekEngine *_vm;
+	Audio::SoundHandle *_soundHandle;
+
+	void loadPCMusicFile(const Common::String &baseSoundName);
+	void clearMidiSlot(int slot);
+
+	// MIDI-Related Variables
+	MidiDriver *_midiDriver;
+	MidiPlaybackSlot _midiSlots[NUM_MIDI_SLOTS]; // 0 is for music; 1-7 are for sfx
+	Common::List<MidiPlaybackSlot *> _midiSlotList; // Sorts midi slots by most recently used
+
+	byte *_loadedSoundData;
+	int _loadedSoundDataSize;
+	uint32 _midiDevice;
+
+	// VOC-related variables
+	Audio::SoundHandle _sfxHandles[MAX_SFX_PLAYING];
+	Audio::SoundHandle _speechHandle;
+	bool _playingSpeech;
+
+public:
+	Common::String _loopingAudioName;
+	Common::String _loadedMidiFilename;
+	MidiTracks _loopingMidiTrack;
+
+private:
+	// Driver callback
+	static void midiDriverCallback(void *data);
+};
+
+} // End of namespace StarTrek
+
+#endif