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engines/zvision/sound/volume_manager.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/>.
+ *
+ */
+
+#include "common/scummsys.h"
+#include "math/angle.h"
+#include "zvision/zvision.h"
+
+#ifndef ZVISION_VOLUME_MANAGER
+#define ZVISION_VOLUME_MANAGER
+
+namespace ZVision {
+
+enum volumeScaling {
+	kVolumeLinear,
+	kVolumePowerLaw,
+	kVolumeParabolic,
+	kVolumeCubic,
+	kVolumeQuartic,
+	kVolumeLogPower,
+	kVolumeLogAmplitude
+};
+
+class VolumeManager {
+public:
+	VolumeManager(ZVision *engine, volumeScaling mode);
+	~VolumeManager() {};
+	volumeScaling getMode() const {
+		return _mode;
+	}
+	void setMode(volumeScaling mode) {
+		_mode = mode;
+	}
+	uint8 convert(uint8 inputValue);
+	uint8 convert(uint8 inputValue, volumeScaling &mode);
+	uint8 convert(uint8 inputValue, Math::Angle azimuth, uint8 directionality = 255);
+	uint8 convert(uint8 inputValue, volumeScaling &mode, Math::Angle azimuth, uint8 directionality = 255);
+#if defined(USE_MPEG2) && defined(USE_A52)
+	double getVobAmplification(Common::String fileName) const;
+#endif
+
+private:
+	uint _scriptScale = 100; // Z-Vision scripts internally use a volume scale of 0-100; ScummVM uses a scale of 0-255.
+	volumeScaling _mode = kVolumeLinear;
+};
+
+} // End of namespace ZVision
+
+#endif