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+/*
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+Minetest
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+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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+
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+This program is free software; you can redistribute it and/or modify
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+it under the terms of the GNU Lesser General Public License as published by
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+the Free Software Foundation; either version 2.1 of the License, or
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+(at your option) any later version.
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+
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+This program is distributed in the hope that it will be useful,
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+but WITHOUT ANY WARRANTY; without even the implied warranty of
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+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+GNU Lesser General Public License for more details.
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+
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+You should have received a copy of the GNU Lesser General Public License along
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+with this program; if not, write to the Free Software Foundation, Inc.,
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+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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+*/
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+
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+#pragma once
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+
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+#include <set>
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+#include <string>
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+#include "irr_v3d.h"
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+#include "../sound.h"
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+
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+class OnDemandSoundFetcher
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+{
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+public:
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+ virtual void fetchSounds(const std::string &name,
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+ std::set<std::string> &dst_paths,
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+ std::set<std::string> &dst_datas) = 0;
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+};
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+
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+class ISoundManager
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+{
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+public:
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+ virtual ~ISoundManager() = default;
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+
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+ // Multiple sounds can be loaded per name; when played, the sound
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+ // should be chosen randomly from alternatives
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+ // Return value determines success/failure
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+ virtual bool loadSoundFile(
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+ const std::string &name, const std::string &filepath) = 0;
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+ virtual bool loadSoundData(
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+ const std::string &name, const std::string &filedata) = 0;
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+
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+ virtual void updateListener(
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+ const v3f &pos, const v3f &vel, const v3f &at, const v3f &up) = 0;
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+ virtual void setListenerGain(float gain) = 0;
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+
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+ // playSound functions return -1 on failure, otherwise a handle to the
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+ // sound. If name=="", call should be ignored without error.
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+ virtual int playSound(const std::string &name, bool loop, float volume,
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+ float fade = 0.0f, float pitch = 1.0f) = 0;
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+ virtual int playSoundAt(const std::string &name, bool loop, float volume, v3f pos,
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+ float pitch = 1.0f) = 0;
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+ virtual void stopSound(int sound) = 0;
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+ virtual bool soundExists(int sound) = 0;
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+ virtual void updateSoundPosition(int sound, v3f pos) = 0;
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+ virtual bool updateSoundGain(int id, float gain) = 0;
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+ virtual float getSoundGain(int id) = 0;
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+ virtual void step(float dtime) = 0;
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+ virtual void fadeSound(int sound, float step, float gain) = 0;
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+
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+ int playSound(const SimpleSoundSpec &spec, bool loop)
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+ {
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+ return playSound(spec.name, loop, spec.gain, spec.fade, spec.pitch);
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+ }
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+ int playSoundAt(const SimpleSoundSpec &spec, bool loop, const v3f &pos)
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+ {
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+ return playSoundAt(spec.name, loop, spec.gain, pos, spec.pitch);
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+ }
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+};
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+
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+class DummySoundManager : public ISoundManager
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+{
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+public:
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+ virtual bool loadSoundFile(const std::string &name, const std::string &filepath)
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+ {
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+ return true;
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+ }
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+ virtual bool loadSoundData(const std::string &name, const std::string &filedata)
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+ {
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+ return true;
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+ }
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+ void updateListener(const v3f &pos, const v3f &vel, const v3f &at, const v3f &up)
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+ {
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+ }
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+ void setListenerGain(float gain) {}
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+ int playSound(const std::string &name, bool loop, float volume, float fade,
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+ float pitch)
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+ {
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+ return 0;
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+ }
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+ int playSoundAt(const std::string &name, bool loop, float volume, v3f pos,
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+ float pitch)
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+ {
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+ return 0;
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+ }
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+ void stopSound(int sound) {}
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+ bool soundExists(int sound) { return false; }
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+ void updateSoundPosition(int sound, v3f pos) {}
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+ bool updateSoundGain(int id, float gain) { return false; }
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+ float getSoundGain(int id) { return 0; }
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+ void step(float dtime) {}
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+ void fadeSound(int sound, float step, float gain) {}
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+};
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+
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+// Global DummySoundManager singleton
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+extern DummySoundManager dummySoundManager;
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