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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _I_SOUND_H_
#define _I_SOUND_H_
#include <string>
class float3;
class LuaParser;
class CSoundSource;
class SoundItem;
/**
* @brief sound system interface
* This is used in other parts of the engine, whenever sound should be played.
*/
class ISound {
static ISound* singleton;
public:
static void Initialize(bool reload, bool forceNullSound = false);
static void Shutdown(bool reload);
static bool IsInitialized() { return (singleton != nullptr); }
static inline ISound* GetInstance() { return singleton; }
virtual ~ISound() {}
virtual void Init() {}
virtual void Kill() {}
virtual bool HasSoundItem(const std::string& name) const = 0;
virtual bool PreloadSoundItem(const std::string& name) = 0;
virtual size_t GetDefSoundId(const std::string& name) = 0;
virtual size_t GetSoundId(const std::string& name) = 0;
virtual SoundItem* GetSoundItem(size_t id) = 0;
/**
* Returns a free sound source if available,
* the one with the lowest priority otherwise.
*/
virtual CSoundSource* GetNextBestSource(bool lock = true) = 0;
virtual void UpdateListener(const float3& camPos, const float3& camDir, const float3& camUp) = 0;
virtual void NewFrame() = 0;
virtual void ConfigNotify(const std::string& key, const std::string& value) = 0;
virtual void PitchAdjust(const float newPitch) = 0;
/// @return true if now muted, false otherwise
virtual bool Mute() = 0;
virtual bool IsMuted() const = 0;
///change current output device
static bool ChangeOutput(bool forceNullSound = false);
virtual void Iconified(bool state) = 0;
virtual void PrintDebugInfo() = 0;
virtual bool SoundThreadQuit() const = 0;
virtual bool CanLoadSoundDefs() const = 0;
bool LoadSoundDefs(LuaParser* defsParser);
virtual const float3& GetListenerPos() const = 0;
public:
unsigned numEmptyPlayRequests = 0;
unsigned numAbortedPlays = 0;
private:
virtual bool LoadSoundDefsImpl(LuaParser* defsParser) = 0;
static bool IsNullAudio();
};
#define sound ISound::GetInstance()
#endif // _I_SOUND_H_
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