//============ Copyright (c) Valve Corporation, All rights reserved.
//============

#ifndef ISTEAMMUSIC_H
#define ISTEAMMUSIC_H
#ifdef _WIN32
#pragma once
#endif

#include "isteamclient.h"

//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
enum AudioPlayback_Status {
    AudioPlayback_Undefined = 0,
    AudioPlayback_Playing = 1,
    AudioPlayback_Paused = 2,
    AudioPlayback_Idle = 3
};

//-----------------------------------------------------------------------------
// Purpose: Functions to control music playback in the steam client
//-----------------------------------------------------------------------------
class ISteamMusic {
   public:
    virtual bool BIsEnabled() = 0;
    virtual bool BIsPlaying() = 0;

    virtual AudioPlayback_Status GetPlaybackStatus() = 0;

    virtual void Play() = 0;
    virtual void Pause() = 0;
    virtual void PlayPrevious() = 0;
    virtual void PlayNext() = 0;

    // volume is between 0.0 and 1.0
    virtual void SetVolume(float flVolume) = 0;
    virtual float GetVolume() = 0;
};

#define STEAMMUSIC_INTERFACE_VERSION "STEAMMUSIC_INTERFACE_VERSION001"

// callbacks
#if defined(VALVE_CALLBACK_PACK_SMALL)
#pragma pack(push, 4)
#elif defined(VALVE_CALLBACK_PACK_LARGE)
#pragma pack(push, 8)
#else
#error isteamclient.h must be included
#endif

DEFINE_CALLBACK(PlaybackStatusHasChanged_t, k_iSteamMusicCallbacks + 1)
END_DEFINE_CALLBACK_0()

DEFINE_CALLBACK(VolumeHasChanged_t, k_iSteamMusicCallbacks + 2)
CALLBACK_MEMBER(0, float, m_flNewVolume)
END_DEFINE_CALLBACK_1()

#pragma pack(pop)

#endif  // #define ISTEAMMUSIC_H