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engines/cine/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 CINE_SOUND_H_
+#define CINE_SOUND_H_
+
+#include "common/util.h"
+#include "common/mutex.h"
+#include "audio/mixer.h"
+#include "audio/mididrv.h"
+
+namespace Audio {
+class AudioStream;
+}
+
+namespace Cine {
+
+class CineEngine;
+
+class Sound {
+public:
+
+	Sound(Audio::Mixer *mixer, CineEngine *vm) : _mixer(mixer), _vm(vm), _musicType(MT_INVALID) {}
+	virtual ~Sound() {}
+
+	virtual MusicType musicType();
+	virtual void loadMusic(const char *name) = 0;
+	virtual void playMusic() = 0;
+	virtual void stopMusic() = 0;
+	virtual void fadeOutMusic() = 0;
+
+	virtual void playSound(int mode, int channel, int param3, int param4, int param5, int size) = 0;
+	virtual void playSound(int channel, int frequency, const uint8 *data, int size, int volumeStep, int stepCount, int volume, int repeat) = 0;
+	virtual void stopSound(int channel) = 0;
+	virtual void setBgMusic(int num) = 0;
+
+protected:
+
+	Audio::Mixer *_mixer;
+	CineEngine *_vm;
+	MusicType _musicType;
+};
+
+class PCSoundDriver;
+class PCSoundFxPlayer;
+
+class PCSound : public Sound {
+public:
+
+	PCSound(Audio::Mixer *mixer, CineEngine *vm);
+	~PCSound() override;
+
+	void loadMusic(const char *name) override;
+	void playMusic() override;
+	void stopMusic() override;
+	void fadeOutMusic() override;
+
+	void playSound(int mode, int channel, int param3, int param4, int param5, int size) override;
+	void playSound(int channel, int frequency, const uint8 *data, int size, int volumeStep, int stepCount, int volume, int repeat) override;
+	void stopSound(int channel) override;
+	void setBgMusic(int num) override;
+
+protected:
+
+	PCSoundDriver *_soundDriver;
+	PCSoundFxPlayer *_player;
+
+	uint8 _currentMusic, _currentMusicStatus, _currentBgSlot;
+};
+
+class PaulaSound : public Sound {
+public:
+
+	PaulaSound(Audio::Mixer *mixer, CineEngine *vm);
+	~PaulaSound() override;
+
+	void loadMusic(const char *name) override;
+	void playMusic() override;
+	void stopMusic() override;
+	void fadeOutMusic() override;
+
+	void playSound(int mode, int channel, int param3, int param4, int param5, int size) override;
+	void playSound(int channel, int frequency, const uint8 *data, int size, int volumeStep, int stepCount, int volume, int repeat) override;
+	void stopSound(int channel) override;
+	void setBgMusic(int num) override;
+
+	enum {
+		PAULA_FREQ = 3579545,
+		NUM_CHANNELS = 4
+	};
+
+protected:
+
+	struct SfxChannel {
+		Audio::SoundHandle handle;
+		int volume;
+		int volumeStep;
+		int curStep;
+		int stepCount;
+
+		void initialize(int vol, int volStep, int stepCnt) {
+			volume     = vol;
+			volumeStep = volStep;
+			curStep    = stepCount = stepCnt;
+		}
+	};
+	SfxChannel _channelsTable[NUM_CHANNELS];
+	static const int _channelBalance[NUM_CHANNELS];
+	Common::Mutex _sfxMutex;
+	int _sfxTimer;
+	static void sfxTimerProc(void *param);
+	void sfxTimerCallback();
+
+	Common::Mutex _musicMutex;
+	int _musicTimer;
+	int _musicFadeTimer;
+	static void musicTimerProc(void *param);
+	void musicTimerCallback();
+	Audio::SoundHandle _moduleHandle;
+	Audio::AudioStream *_moduleStream;
+};
+
+extern Sound *g_sound;
+
+} // End of namespace Cine
+
+#endif /* CINE_SOUND_H_ */