mirror of https://github.com/minetest/minetest.git
183 lines
5.8 KiB
C++
183 lines
5.8 KiB
C++
/*
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Minetest
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Copyright (C) 2022 DS
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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OpenAL support based on work by:
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Copyright (C) 2011 Sebastian 'Bahamada' Rühl
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Copyright (C) 2011 Cyriaque 'Cisoun' Skrapits <cysoun@gmail.com>
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Copyright (C) 2011 Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
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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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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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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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#pragma once
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#include "playing_sound.h"
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#include "al_extensions.h"
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#include "sound_constants.h"
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#include "sound_manager_messages.h"
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#include "../sound.h"
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#include "threading/thread.h"
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#include "util/container.h" // MutexedQueue
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namespace sound {
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class SoundManagerSingleton;
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/*
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* The SoundManager thread
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*
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* It's not an ISoundManager. It doesn't allocate ids, and doesn't accept id 0.
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* All sound loading and interaction with OpenAL happens in this thread, and in
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* SoundManagerSingleton.
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* Access from other threads happens via ProxySoundManager.
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*
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* See sound_constants.h for more details.
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*/
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class OpenALSoundManager final : public Thread
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{
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private:
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std::unique_ptr<SoundFallbackPathProvider> m_fallback_path_provider;
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ALCdevice *const m_device;
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ALCcontext *const m_context;
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const ALExtensions m_exts;
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// time in seconds until which removeDeadSounds will be called again
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f32 m_time_until_dead_removal = REMOVE_DEAD_SOUNDS_INTERVAL;
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// loaded sounds
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std::unordered_map<std::string, std::unique_ptr<ISoundDataUnopen>> m_sound_datas_unopen;
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std::unordered_map<std::string, std::shared_ptr<ISoundDataOpen>> m_sound_datas_open;
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// sound groups
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std::unordered_map<std::string, std::vector<std::string>> m_sound_groups;
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// currently playing sounds
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std::unordered_map<sound_handle_t, std::shared_ptr<PlayingSound>> m_sounds_playing;
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// streamed sounds
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std::vector<std::weak_ptr<PlayingSound>> m_sounds_streaming_current_bigstep;
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std::vector<std::weak_ptr<PlayingSound>> m_sounds_streaming_next_bigstep;
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// time left until current bigstep finishes
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f32 m_stream_timer = STREAM_BIGSTEP_TIME;
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std::vector<std::weak_ptr<PlayingSound>> m_sounds_fading;
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// if true, all sounds will be directly paused after creation
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bool m_is_paused = false;
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// used for printing warnings only once
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std::unordered_set<std::string> m_warned_positional_stereo_sounds;
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public:
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// used for communication with ProxySoundManager
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MutexedQueue<SoundManagerMsgToMgr> m_queue_to_mgr;
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MutexedQueue<SoundManagerMsgToProxy> m_queue_to_proxy;
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private:
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void stepStreams(f32 dtime);
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void doFades(f32 dtime);
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/**
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* Gives the open sound for a loaded sound.
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* Opens the sound if currently unopened.
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*
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* @param sound_name Name of the sound.
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* @return The open sound.
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*/
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std::shared_ptr<ISoundDataOpen> openSingleSound(const std::string &sound_name);
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/**
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* Gets a random sound name from a group.
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*
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* @param group_name The name of the sound group.
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* @return The name of a sound in the group, or "" on failure. Getting the
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* sound with `openSingleSound` directly afterwards will not fail.
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*/
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std::string getLoadedSoundNameFromGroup(const std::string &group_name);
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/**
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* Same as `getLoadedSoundNameFromGroup`, but if sound does not exist, try to
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* load from local files.
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*/
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std::string getOrLoadLoadedSoundNameFromGroup(const std::string &group_name);
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std::shared_ptr<PlayingSound> createPlayingSound(const std::string &sound_name,
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bool loop, f32 volume, f32 pitch, f32 start_time,
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const std::optional<std::pair<v3f, v3f>> &pos_vel_opt);
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void playSoundGeneric(sound_handle_t id, const std::string &group_name, bool loop,
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f32 volume, f32 fade, f32 pitch, bool use_local_fallback, f32 start_time,
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const std::optional<std::pair<v3f, v3f>> &pos_vel_opt);
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/**
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* Deletes sounds that are dead (=finished).
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*
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* @return Number of removed sounds.
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*/
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int removeDeadSounds();
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public:
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OpenALSoundManager(SoundManagerSingleton *smg,
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std::unique_ptr<SoundFallbackPathProvider> fallback_path_provider);
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~OpenALSoundManager() override;
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DISABLE_CLASS_COPY(OpenALSoundManager)
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private:
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/* Similar to ISoundManager */
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void step(f32 dtime);
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void pauseAll();
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void resumeAll();
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void updateListener(const v3f &pos_, const v3f &vel_, const v3f &at_, const v3f &up_);
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void setListenerGain(f32 gain);
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bool loadSoundFile(const std::string &name, const std::string &filepath);
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bool loadSoundData(const std::string &name, std::string &&filedata);
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void loadSoundFileNoCheck(const std::string &name, const std::string &filepath);
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void loadSoundDataNoCheck(const std::string &name, std::string &&filedata);
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void addSoundToGroup(const std::string &sound_name, const std::string &group_name);
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void playSound(sound_handle_t id, const SoundSpec &spec);
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void playSoundAt(sound_handle_t id, const SoundSpec &spec, const v3f &pos_,
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const v3f &vel_);
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void stopSound(sound_handle_t sound);
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void fadeSound(sound_handle_t soundid, f32 step, f32 target_gain);
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void updateSoundPosVel(sound_handle_t sound, const v3f &pos_, const v3f &vel_);
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protected:
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/* Thread stuff */
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void *run() override;
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private:
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void send(SoundManagerMsgToProxy msg)
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{
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m_queue_to_proxy.push_back(std::move(msg));
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}
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void reportRemovedSound(sound_handle_t id)
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{
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send(sound_manager_messages_to_proxy::ReportRemovedSound{id});
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}
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};
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} // namespace sound
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