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engines/mtropolis/audio_player.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 MTROPOLIS_AUDIO_PLAYER_H
+#define MTROPOLIS_AUDIO_PLAYER_H
+
+#include "common/mutex.h"
+
+#include "audio/audiostream.h"
+#include "audio/mixer.h"
+
+namespace MTropolis {
+
+struct AudioMetadata;
+class CachedAudio;
+
+// Audio player, this does not support requeueing.  If the sound exhausts, then you must create a
+// new audio player.  In particular, since time is being tracked separately, if the loop status
+// changes when the timer thinks the sound should still be playing, but the sound has actually
+// exhausted, then the sound needs to be requeued.
+class AudioPlayer : public Audio::AudioStream {
+public:
+	AudioPlayer(Audio::Mixer *mixer, byte volume, int8 balance, const Common::SharedPtr<AudioMetadata> &metadata, const Common::SharedPtr<CachedAudio> &audio, bool isLooping, size_t currentPos, size_t startPos, size_t endPos);
+	~AudioPlayer();
+
+	int readBuffer(int16 *buffer, const int numSamples) override;
+	bool isStereo() const override;
+	int getRate() const override;
+	bool endOfData() const override;
+
+	void sendToMixer(Audio::Mixer *mixer, byte volume, int8 balance);
+	void stop();
+
+private:
+	Common::Mutex _mutex;
+
+	Common::SharedPtr<AudioMetadata> _metadata;
+	Common::SharedPtr<CachedAudio> _audio;
+	Audio::SoundHandle _handle;
+	bool _isLooping;
+	bool _exhausted;
+	size_t _currentPos;
+	size_t _startPos;
+	size_t _endPos;
+	Audio::Mixer *_mixer;
+};
+
+} // End of namespace MTropolis
+
+#endif