sound.h

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#ifndef ENGINE_SOUND_H
#define ENGINE_SOUND_H
 
#include <engine/kernel.h>
#include <engine/storage.h>
 
#include <base/vmath.h>
 
class ISound : public IInterface
{
    MACRO_INTERFACE("sound")
public:
    enum
    {
        FLAG_LOOP = 1 << 0,
        FLAG_POS = 1 << 1,
        FLAG_NO_PANNING = 1 << 2,
        FLAG_PREVIEW = 1 << 3,
        FLAG_ALL = FLAG_LOOP | FLAG_POS | FLAG_NO_PANNING | FLAG_PREVIEW,
    };
 
    enum
    {
        SHAPE_CIRCLE,
        SHAPE_RECTANGLE,
    };
 
    // unused
    struct CSampleHandle
    {
        int m_SampleId;
    };
 
    struct CVoiceShapeCircle
    {
        float m_Radius;
    };
 
    struct CVoiceShapeRectangle
    {
        float m_Width;
        float m_Height;
    };
 
    class CVoiceHandle
    {
        friend class ISound;
        int m_Id;
        int m_Age;
 
    public:
        CVoiceHandle() :
            m_Id(-1), m_Age(-1)
        {
        }
 
        bool IsValid() const { return (Id() >= 0) && (Age() >= 0); }
        int Id() const { return m_Id; }
        int Age() const { return m_Age; }
 
        bool operator==(const CVoiceHandle &Other) const { return m_Id == Other.m_Id && m_Age == Other.m_Age; }
    };
 
    virtual bool IsSoundEnabled() = 0;
 
    virtual int LoadOpus(const char *pFilename, int StorageType = IStorage::TYPE_ALL) = 0;
    virtual int LoadWV(const char *pFilename, int StorageType = IStorage::TYPE_ALL) = 0;
    virtual int LoadOpusFromMem(const void *pData, unsigned DataSize, bool ForceLoad = false) = 0;
    virtual int LoadWVFromMem(const void *pData, unsigned DataSize, bool ForceLoad = false) = 0;
    virtual void UnloadSample(int SampleId) = 0;
 
    virtual float GetSampleTotalTime(int SampleId) = 0; // in s
    virtual float GetSampleCurrentTime(int SampleId) = 0; // in s
    virtual void SetSampleCurrentTime(int SampleId, float Time) = 0;
 
    virtual void SetChannel(int ChannelId, float Volume, float Panning) = 0;
    virtual void SetListenerPosition(vec2 Position) = 0;
 
    virtual void SetVoiceVolume(CVoiceHandle Voice, float Volume) = 0;
    virtual void SetVoiceFalloff(CVoiceHandle Voice, float Falloff) = 0;
    virtual void SetVoicePosition(CVoiceHandle Voice, vec2 Position) = 0;
    virtual void SetVoiceTimeOffset(CVoiceHandle Voice, float TimeOffset) = 0; // in s
 
    virtual void SetVoiceCircle(CVoiceHandle Voice, float Radius) = 0;
    virtual void SetVoiceRectangle(CVoiceHandle Voice, float Width, float Height) = 0;
 
    virtual CVoiceHandle PlayAt(int ChannelId, int SampleId, int Flags, float Volume, vec2 Position) = 0;
    virtual CVoiceHandle Play(int ChannelId, int SampleId, int Flags, float Volume) = 0;
    virtual void Pause(int SampleId) = 0;
    virtual void Stop(int SampleId) = 0;
    virtual void StopAll() = 0;
    virtual void StopVoice(CVoiceHandle Voice) = 0;
    virtual bool IsPlaying(int SampleId) = 0;
 
    virtual int MixingRate() const = 0;
    virtual void Mix(short *pFinalOut, unsigned Frames) = 0;
 
    // useful for thread synchronization
    virtual void PauseAudioDevice() = 0;
    virtual void UnpauseAudioDevice() = 0;
 
protected:
    inline CVoiceHandle CreateVoiceHandle(int Index, int Age)
    {
        CVoiceHandle Voice;
        Voice.m_Id = Index;
        Voice.m_Age = Age;
        return Voice;
    }
};
 
class IEngineSound : public ISound
{
    MACRO_INTERFACE("enginesound")
public:
    virtual int Init() = 0;
    virtual int Update() = 0;
    void Shutdown() override = 0;
};
 
extern IEngineSound *CreateEngineSound();
 
#endif