/** 
 * @file streamingaudio_fmodstudio.h
 * @brief Definition of LLStreamingAudio_FMODSTUDIO implementation
 *
 * $LicenseInfo:firstyear=2020&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2020, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_STREAMINGAUDIO_FMODSTUDIO_H
#define LL_STREAMINGAUDIO_FMODSTUDIO_H

#include "stdtypes.h" // from llcommon

#include "llstreamingaudio.h"
#include "lltimer.h"

//Stubs
class LLAudioStreamManagerFMODSTUDIO;
namespace FMOD
{
	class System;
	class Channel;
	class ChannelGroup;
	class DSP;
}

//Interfaces
class LLStreamingAudio_FMODSTUDIO : public LLStreamingAudioInterface
{
public:
    LLStreamingAudio_FMODSTUDIO(FMOD::System *system);
    /*virtual*/ ~LLStreamingAudio_FMODSTUDIO();

    /*virtual*/ void start(const std::string& url);
    /*virtual*/ void stop();
    /*virtual*/ void pause(S32 pause);
    /*virtual*/ void update();
    /*virtual*/ S32 isPlaying();
    /*virtual*/ void setGain(F32 vol);
    /*virtual*/ F32 getGain();
    /*virtual*/ std::string getURL();

    /*virtual*/ bool supportsAdjustableBufferSizes(){return true;}
    /*virtual*/ void setBufferSizes(U32 streambuffertime, U32 decodebuffertime);
    //Streamtitle display DKO
    LLSD getCurrentMetadata() const noexcept { return mMetadata; }

private:
    bool releaseDeadStreams();

    FMOD::System *mSystem;

    LLAudioStreamManagerFMODSTUDIO *mCurrentInternetStreamp;
    FMOD::ChannelGroup* mStreamGroup;
    FMOD::Channel *mFMODInternetStreamChannelp;
    std::list<LLAudioStreamManagerFMODSTUDIO *> mDeadStreams;

    std::string mURL;
    std::string mPendingURL;
    F32 mGain;
    // <DKO> Streamtitle display
    LLSD mMetadata;

    bool mWasAlreadyPlaying;
};

#endif // LL_STREAMINGAUDIO_FMODSTUDIO_H
