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75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file music_driver.hpp Base for all music playback. */
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#ifndef MUSIC_MUSIC_DRIVER_HPP
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#define MUSIC_MUSIC_DRIVER_HPP
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#include "../driver.h"
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#include <memory>
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#include <mutex>
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extern std::mutex _music_driver_mutex;
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struct MusicSongInfo;
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/** Driver for all music playback. */
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class MusicDriver : public Driver {
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public:
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/**
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* Play a particular song.
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* @param song The information for the song to play.
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*/
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virtual void PlaySong(const MusicSongInfo &song) = 0;
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/**
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* Stop playing the current song.
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*/
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virtual void StopSong() = 0;
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/**
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* Are we currently playing a song?
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* @return True if a song is being played.
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*/
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virtual bool IsSongPlaying() = 0;
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/**
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* Set the volume, if possible.
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* @param vol The new volume.
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*/
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virtual void SetVolume(byte vol) = 0;
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/**
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* Is playback in a failed state?
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* @return True if playback is in a failed state.
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*/
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virtual bool IsInFailedState() { return false; }
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static std::unique_ptr<MusicDriver> ExtractDriver()
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{
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Driver **dptr = DriverFactoryBase::GetActiveDriver(Driver::DT_MUSIC);
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Driver *driver = *dptr;
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*dptr = nullptr;
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return std::unique_ptr<MusicDriver>(static_cast<MusicDriver*>(driver));
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}
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/**
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* Get the currently active instance of the music driver.
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*/
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static MusicDriver *GetInstance() {
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std::unique_lock<std::mutex> lock(_music_driver_mutex);
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return static_cast<MusicDriver*>(*DriverFactoryBase::GetActiveDriver(Driver::DT_MUSIC));
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}
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};
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extern std::string _ini_musicdriver;
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#endif /* MUSIC_MUSIC_DRIVER_HPP */
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