CWE-ou-minkata/Sources/Plasma/PubUtilLib/plAudio/plSound.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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*==LICENSE==*/
#include "HeadSpin.h"

#include "hsResMgr.h"
#include "hsTimer.h"
#include "hsGeometry3.h"
#include "hsColorRGBA.h"
#include "plProfile.h"
#include "plgDispatch.h"

#include "plAudioSystem.h"
#include "plSound.h"
#include "plWin32Sound.h"

#include "plAudioCore/plSoundBuffer.h"
#include "plDrawable/plDrawableGenerator.h"
#include "pnMessage/plRefMsg.h"
#include "pnMessage/plTimeMsg.h"
#include "pnMessage/plAudioSysMsg.h"
#include "pnMessage/plSoundMsg.h"
#include "plMessage/plListenerMsg.h"
#include "plIntersect/plSoftVolume.h"
#include "plStatusLog/plStatusLog.h"
#include "plPipeline/plPlates.h"
#include "pnKeyedObject/plKey.h"
#include "pnNetCommon/plSDLTypes.h"
#include "plAvatar/plScalarChannel.h"
#include "plAvatar/plAGModifier.h"
#include "pnSceneObject/plSceneObject.h"
#include "pnSceneObject/plAudioInterface.h"

plProfile_CreateCounterNoReset( "Loaded", "Sound", SoundNumLoaded );
plProfile_CreateCounterNoReset( "Waiting to Die", "Sound", WaitingToDie );
plProfile_CreateAsynchTimer( "Sound Load Time", "Sound", SoundLoadTime );

plGraphPlate    *plSound::fDebugPlate = nil;
plSound         *plSound::fCurrDebugPlateSound = nil;
hsBool          plSound::fLoadOnDemandFlag = true;
hsBool          plSound::fLoadFromDiskOnDemand = true;
unsigned        plSound::fIncidentalsPlaying = 0;

plSound::plSound() :
fPlaying(false),
fActive(false),
fTime(0),
fMaxFalloff(0),
fMinFalloff(0),
fCurrVolume(0.f),
fOuterVol(0),
fOuterCone(360),
fInnerCone(360),
fLength(0.0f),
fDesiredVol(0.f),
fFading(false),
fRegisteredForTime(false),
fMuted(true),
fFadedVolume(0.f),
fSoftRegion(nil),
fSoftOcclusionRegion(nil),
fSoftVolume(0.f),
fCurrFadeParams(nil),
fRegistered(false),
fDistAttenuation(0.f),
fProperties(0),
fNotHighEnoughPriority(false),
fVirtualStartTime(0),
fOwningSceneObject(nil),
fPriority(0),
fType(plSound::kSoundFX),
fQueued(false),
fLoading(false),
fSynchedStartTimeSec(0),
fMaxVolume(0),
fFreeData(false)
{
    plProfile_Inc( SoundNumLoaded );
    f3DPosition.Set( 0.f, 0.f, 0.f );
    f3DVelocity.Set( 0.f, 0.f, 0.f );
    fDataBuffer = nil;
    fDataBufferKey = nil;
    fPlayOnReactivate = false;
    fDataBufferLoaded = false;
}

plSound::~plSound()
{
    IStopFade( true );
    plProfile_Dec( SoundNumLoaded );
}

void plSound::IPrintDbgMessage( const char *msg, hsBool isError )
{
    static plStatusLog  *ourLog = nil;

    // Print to our log file (create it if necessary)
    if( ourLog == nil )
    {
//      ourLog = plStatusLogMgr::GetInstance().CreateStatusLog( 15, 
//              "audio.log", plStatusLog::kFilledBackground | plStatusLog::kDeleteForMe | plStatusLog::kAlignToTop );
    }

    if( isError )
//      ourLog->AddLineF( plStatusLog::kRed, "ERROR: %s (%s)", msg, GetKey() ? GetKeyName() : "unkeyed" );
        ourLog->AddLineS( "audio.log", plStatusLog::kRed, "ERROR: %s (%s)", msg, GetKey() ? GetKeyName().c_str() : "unkeyed" );
    else
//      ourLog->AddLineF( "%s (%s)", msg, GetKey() ? GetKeyName() : "unkeyed" );
        ourLog->AddLineS( "audio.log", "%s (%s)", msg, GetKey() ? GetKeyName().c_str() : "unkeyed" );
}

///////////////////////////////////////////////////////////
//  Called to send more values to the debug plate, assuming this is the right
//  sound. Should be called every time any of the values change, which means
//  the best place is inside ISetActualVolume(). Since that's a pure virtual,
//  it makes the placement of the call a bit annoying, but oh well.
void plSound::IUpdateDebugPlate( void )
{
    if( this == fCurrDebugPlateSound )
    {
        if( fDebugPlate == nil )
        {
            plPlateManager::Instance().CreateGraphPlate( &fDebugPlate );
            fDebugPlate->SetSize( 0.50, 0.25 );
            fDebugPlate->SetPosition( -0.5, 0 );
            fDebugPlate->SetDataRange( 0, 100, 100 );
            fDebugPlate->SetColors( 0x80202000 );
            fDebugPlate->SetTitle( _TEMP_CONVERT_TO_CONST_CHAR( GetKeyName() ) );      // Bleah
            fDebugPlate->SetLabelText( "Desired", "Curr", "Soft", "Dist" );
        }

        fDebugPlate->SetVisible( true );
        fDebugPlate->AddData( (int32_t)( fDesiredVol * 100.f ), 
                              (int32_t)( fCurrVolume * 100.f ),
                              (int32_t)( fSoftVolume * 100.f ),
                              (int32_t)( fDistAttenuation * 100.f ) );
    }
}

void plSound::SetCurrDebugPlate( const plKey soundKey )
{
    if( soundKey == nil )
    {
        fCurrDebugPlateSound = nil;
        if( fDebugPlate != nil )
            fDebugPlate->SetVisible( false );
    }
    else
    {
        fCurrDebugPlateSound = plSound::ConvertNoRef( soundKey->GetObjectPtr() );
        if( fDebugPlate != nil )
        {
            fDebugPlate->ClearData();
            fDebugPlate->SetVisible( true );
            fDebugPlate->SetTitle( _TEMP_CONVERT_TO_CONST_CHAR( fCurrDebugPlateSound->GetKeyName() ) );        // Bleah
        }
    }
}

/////////////////////////////////////////////////////////////////////
//  We don't keep track of the current time we should be at, but rather the
//  time we started at. Since we're calling SetTime(), we should adjust the
//  start time to be accurate for the time we want to be at now. Note: we
//  don't actually move the buffer position unless it's loaded, since we
//  don't want to force a load on a buffer just from a SetTime() call.
void plSound::SetTime( double t )
{
    fVirtualStartTime = hsTimer::GetSysSeconds() - t;

    if( IActuallyLoaded() )
        ISetActualTime( t );
}

// Support for Fast forward responder
void plSound::FastForwardPlay()
{
    if(fProperties & kPropLooping)
    {
        Play();
    }
}

void plSound::FastForwardToggle()
{
    if(fPlaying == true)
    {
        Stop();
        return;
    }
    FastForwardPlay();
}

////////////////////////////////////////////////////////////////////////
//  Our basic play function. Marks the sound as playing, and if we're actually
//  allowed to play, will actually start the sound playing as well.
void plSound::Play()
{   
    if(fLoading)    // if we are loading there is no reason to do this. Play will be called, by Update(), once the data is loaded and this floag is set to false
        return;

    if( !fActive )
    {
        // We're not active, so we can't play, but mark to make sure we'll play once we do get activated
        fPlayOnReactivate = true;
        return;
    }

    fPlaying = true;

    if(IPreLoadBuffer(true) == plSoundBuffer::kPending)
    {
        return;
    }

    fVirtualStartTime = hsTimer::GetSysSeconds();   // When we "started", even if we really don't start

    // if the sound system is not active do a fake play so callbacks get sent
    if(!plgAudioSys::Active())
    {
        // Do the (fake) actual play
        IActuallyPlay();
    }
    if( IWillBeAbleToPlay() )
    {
        IRefreshParams();

        if( fFadeInParams.fLengthInSecs > 0 )
        {
            IStartFade( &fFadeInParams);
        }
        else
        {
            // we're NOT fading!!!!
            if( fFading )
                IStopFade();
             SetVolume( fDesiredVol );
        }

        // Do the actual play
        IActuallyPlay();
    }
}

void plSound::SynchedPlay(unsigned bytes )
{
    if( fFading )
        IStopFade();
    if(fLoading)    // the sound is loading, it will be played when loading is finished
        return;

    if( !fActive )
    {
        // We're not active, so we can't play, but mark to make sure we'll play once we do get activated
        fPlayOnReactivate = true;
        return;
    }

    // Mark as playing, since we'll be calling ITryPlay() directly
    fPlaying = true;
    fPlayOnReactivate = false;

    if( IWillBeAbleToPlay() )
    {
        SetStartPos(bytes);
        Play();
    }
}

/////////////////////////////////////////////////////////////////
//  Used for synching play state. The state only knows that we're playing
//  and what time we started at, so we use that to compute what time we should
//  be at and update. Note that we also set our virtual start time to what
//  we're given, NOT the current time, 'cause, well, duh, that should be our
//  start time!
//  So think of it as "Play() but act as if you started at *this* time"...
void plSound::SynchedPlay( float virtualStartTime )
{
    if( fFading )
        IStopFade();

    ISynchedPlay( virtualStartTime );
}

////////////////////////////////////////////////////////////////
//  Only want to do the fade hack when somebody outside synch()s us.
void plSound::ISynchedPlay( double virtualStartTime )
{   
    if(fLoading)    // the sound is loading, it will be played when loading is finished
        return;

    // Store our start time
    fVirtualStartTime = virtualStartTime;

    if( !fActive )
    {
        // We're not active, so we can't play, but mark to make sure we'll play once we do get activated
        fPlayOnReactivate = true;
        return;
    }

    // Mark as playing, since we'll be calling ITryPlay() directly
    fPlaying = true;
    fPlayOnReactivate = false;

    // Do da synch, which will start us playing
    if( IWillBeAbleToPlay() )
    {
        ISynchToStartTime();
    }
}

///////////////////////////////////////////////////////////
//  Takes the virtual start time and sets us to the real time we should be at,
//  then starts us playing via ITryPlay().
void plSound::ISynchToStartTime( void )
{
    if( !plgAudioSys::Active() )
        return;

    // We don't want to do this until we're actually loaded, since that's when we'll know our
    // REAL length (thanks to the inaccuracies of WMA compression)
//  LoadSound( IsPropertySet( kPropIs3DSound ) );
    // Haha, the GetLength() call will do this for us

    // Calculate what time we should be at
    double deltaTime = hsTimer::GetSysSeconds() - fVirtualStartTime;
    double length = GetLength();

    if( deltaTime > length || deltaTime < 0 )
    {
        // Hmm, our time went past the length of sound, so handle that
        if( IsPropertySet( kPropLooping ) ) 
        {
            if( length <= 0 )
                deltaTime = 0;      // Error, attempt to recover
            else if( deltaTime < 0 )
            {
                int numWholeParts = (int)( -deltaTime / length );
                deltaTime += length * ( numWholeParts + 1 );
            }
            else
            {
                int numWholeParts = (int)( deltaTime / length );
                deltaTime -= length * (double)numWholeParts;
            }

            //ISetActualTime( deltaTime );
            Play();
        }
        else
            // We already played and stopped virtually, so really mark us as stopped
            Stop();
    }
    else
    {
        // Easy 'nuf...
        //ISetActualTime( deltaTime );
        Play();
    }
} 

void plSound::SetPosition(const hsPoint3 pos)
{
    f3DPosition = pos;
}

void plSound::SetVelocity(const hsVector3 vel)
{
    f3DVelocity = vel;
}

hsPoint3 plSound::GetPosition( void ) const
{
    return f3DPosition;
}

hsVector3 plSound::GetVelocity( void ) const
{
    return f3DVelocity;
}

void plSound::SetMin(const int m)
{
    fMinFalloff = m;
}

void plSound::SetMax(const int m)
{
    fMaxFalloff = m;
}

void plSound::SetOuterVolume(const int v)
{
    fOuterVol = v;
}

void plSound::SetConeOrientation( float x, float y, float z )
{
    fConeOrientation.Set( x, y, z );
}

void plSound::SetConeAngles( int inner, int outer )
{
    fOuterCone = outer;
    fInnerCone = inner;
}

int plSound::GetMin() const
{
    return fMinFalloff;
}

int plSound::GetMax() const
{
    return fMaxFalloff;
}

void plSound::SetVolume(const float v)
{
    fDesiredVol = v;

    if( !fMuted && !fFading )
        fCurrVolume = fDesiredVol;

    RefreshVolume();
}

void plSound::RefreshVolume( void )
{
    this->ISetActualVolume( fCurrVolume );
}

void plSound::SetMuted( hsBool muted )
{
    if( muted != fMuted )
    {
        fMuted = muted;
        if( fMuted )
            fCurrVolume = 0.f;
        else if( !fFading )
            fCurrVolume = fDesiredVol;

        RefreshVolume();
    }
}

void plSound::IRefreshParams( void )
{
    SetMax( fMaxFalloff );
    SetMin( fMinFalloff );
    SetOuterVolume( fOuterVol );
    SetConeAngles( fInnerCone, fOuterCone );
    SetConeOrientation( fConeOrientation.fX, fConeOrientation.fY, fConeOrientation.fZ);
    SetPosition( f3DPosition );
    SetVelocity( f3DVelocity );
}

////////////////////////////////////////////////////////////////////////
//  The public interface to stopping, which also synchs the state with the
//  server.
void plSound::Stop( void )
{
    fPlaying = false;

    // if the audio data is loading while stop is called we need to make sure the sounds doesn't play, and the data is unloaded.
    fPlayOnReactivate = false;  
    fFreeData = true;
    
    // Do we have an ending fade?
    if( fFadeOutParams.fLengthInSecs > 0 && !plgAudioSys::IsRestarting() )
    {
        IStartFade( &fFadeOutParams );
    }
    else
    {
        if( fFading )
            IStopFade();

        fCurrVolume = 0.f;
        ISetActualVolume( fCurrVolume );
        IActuallyStop();
    }
    if(fPlayWhenLoaded)
    {
        fPlayWhenLoaded = false;
    }
}

void plSound::IActuallyStop( void )
{
    if( fLoadOnDemandFlag && !IsPropertySet( kPropDisableLOD ) && !IsPropertySet( kPropLoadOnlyOnCall ) )
    {
        // If we're loading on demand, we want to unload on stop
        IFreeBuffers();
    }
}

void plSound::Update() 
{
    if(fLoading)
    {       
        plSoundBuffer::ELoadReturnVal retVal = IPreLoadBuffer(fPlayWhenLoaded);
        
        if(retVal == plSoundBuffer::kError)
        {
            fLoading = false;
            fPlayWhenLoaded = false;
        }
        if(retVal == plSoundBuffer::kSuccess)
        {
            fLoading = false;
            if(fPlayWhenLoaded)
                Play();
            fPlayWhenLoaded = false;

            // ensure the sound data is released if the sound object was stopped while the audio data was being loaded.
            if(fFreeData)
            {
                fFreeData = false;
                FreeSoundData();
            }
        }
    }
}

float plSound::IGetChannelVolume( void ) const
{
    float channelVol = plgAudioSys::GetChannelVolume( (plgAudioSys::ASChannel)fType );

    // if not using hardware acceleration then apply 2D/3D bias to non 3D sounds
    if( !plgAudioSys::Hardware() && !IsPropertySet( kPropIs3DSound ) )
        channelVol *= plgAudioSys::Get2D3Dbias();

    if( IsPropertySet( kPropDontFade ) )
        return channelVol;
    
    return channelVol * plgAudioSys::GetGlobalFadeVolume();
}

void plSound::IStartFade( plFadeParams *params, float offsetIntoFade )
{
    fFading = true;

    if( params == &fFadeOutParams )
    {
        fFadeOutParams.fVolStart = fCurrVolume;
        fFadeOutParams.fVolEnd = fFadedVolume;
        fCurrFadeParams = &fFadeOutParams;
    }
    else if( params == &fFadeInParams )
    {
        fFadeInParams.fVolStart = fCurrVolume;  // Hopefully, we got to fFadedVolume, but maybe not
        fFadeInParams.fVolEnd = fDesiredVol;
        fCurrFadeParams = &fFadeInParams;
        plStatusLog::AddLineS("audio.log", "Fading in %s", GetKeyName().c_str());
    }
    else
        fCurrFadeParams = params;

    fCurrFadeParams->fCurrTime = offsetIntoFade;
    ISetActualVolume( fCurrFadeParams->InterpValue() );

    if( !fRegisteredForTime )
    {
        plgDispatch::Dispatch()->RegisterForExactType( plTimeMsg::Index(), GetKey() );
        fRegisteredForTime = true;
    }
}

void plSound::IStopFade( hsBool shuttingDown, hsBool SetVolEnd)
{
    if( fCurrFadeParams != nil )
    {
        if( fCurrFadeParams == &fCoolSoftVolumeTrickParams )
        {
            plProfile_Dec( WaitingToDie );
        }

        // This can cause problems if we've exited a soft region and are doing a soft volume fade.
        // If the camera pops back into the region of this particular sound this will cause the soft volume to be zero, 
        // therefore not allowing the sound to play until the listener moves again(triggering another softsound update).
        // So if this function is called from UpdateSoftSounds this will not be performed
        if(SetVolEnd)
        {
            if( fCurrFadeParams->fFadeSoftVol )
                fSoftVolume = fCurrFadeParams->fVolEnd;
            else
                fCurrVolume = fCurrFadeParams->fVolEnd;
        }

        if( !shuttingDown )
            ISetActualVolume( fCurrVolume );

        fCurrFadeParams->fCurrTime = -1.f;
    }

    fFading = false;
    fCurrFadeParams = nil;

    // Fade done, unregister for time message
    if( fRegisteredForTime )
    {
        plgDispatch::Dispatch()->UnRegisterForExactType( plTimeMsg::Index(), GetKey() );
        fRegisteredForTime = false;
    }
}

hsBool plSound::MsgReceive( plMessage* pMsg )
{
    plTimeMsg   *time = plTimeMsg::ConvertNoRef( pMsg );
    if( time != nil )
    {
        /// Time message for handling fade ins/outs
        if( fCurrFadeParams == nil )
            return true;

        fCurrFadeParams->fCurrTime += time->DelSeconds();

        if( fCurrFadeParams->fCurrTime >= fCurrFadeParams->fLengthInSecs )
        {
            if( fCurrFadeParams->fFadeSoftVol )
                fSoftVolume = fCurrFadeParams->fVolEnd;
            else
                fCurrVolume = fCurrFadeParams->fVolEnd;
            ISetActualVolume( fCurrVolume );
            fCurrFadeParams->fCurrTime = -1.f;
                        
            // Fade done, unregister for time message
            if( fRegisteredForTime )
            {
                plgDispatch::Dispatch()->UnRegisterForExactType( plTimeMsg::Index(), GetKey() );
                fRegisteredForTime = false;
            }

            // Note: if we're done, and we were fading out, we need to STOP
            if( fCurrFadeParams->fStopWhenDone )
            {
                // REALLY STOP
                IActuallyStop();
            }

            if( fCurrFadeParams == &fCoolSoftVolumeTrickParams )
            {
                plProfile_Dec( WaitingToDie );
            }

            // Done with this one!
            fCurrFadeParams = nil;
            fFading = false;
        }   
        else
        {
            // Gotta interp
            if( fCurrFadeParams->fFadeSoftVol )
                fSoftVolume = fCurrFadeParams->InterpValue();
            else
                fCurrVolume = fCurrFadeParams->InterpValue();
                        
            ISetActualVolume( fCurrVolume );
        }

        return true;
    }

    plGenRefMsg* refMsg = plGenRefMsg::ConvertNoRef( pMsg );
    if( refMsg )
    {
        if( refMsg->fType == kRefSoftVolume )
        {
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
            {
                ISetSoftRegion( plSoftVolume::ConvertNoRef(refMsg->GetRef()) );
                return true;
            }
            else if( refMsg->GetContext() & (plRefMsg::kOnRemove | plRefMsg::kOnDestroy) )
            {
                ISetSoftRegion( nil );
                return true;
            }
        }
        else if( refMsg->fType == kRefSoftOcclusionRegion )
        {
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
            {
                ISetSoftOcclusionRegion( plSoftVolume::ConvertNoRef( refMsg->GetRef() ) );
                return true;
            }
            else if( refMsg->GetContext() & (plRefMsg::kOnRemove | plRefMsg::kOnDestroy) )
            {
                ISetSoftOcclusionRegion( nil );
                return true;
            }
        }
        else if( refMsg->fType == kRefDataBuffer )
        {
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
            {
                fDataBuffer = plSoundBuffer::ConvertNoRef( refMsg->GetRef() );
                SetLength( fDataBuffer->GetDataLengthInSecs() );
            }
            else
                fDataBuffer = nil;

            return true;
        }
        else if( refMsg->fType == kRefParentSceneObject )
        {
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
                fOwningSceneObject = plSceneObject::ConvertNoRef( refMsg->GetRef() );
            else
                fOwningSceneObject = nil;

            return true;
        }
    }

    plSoundMsg *pSoundMsg = plSoundMsg::ConvertNoRef( pMsg );
    if( pSoundMsg != nil )
    {   
        if( pSoundMsg->Cmd( plSoundMsg::kAddCallbacks ) )
        {
            AddCallbacks( pSoundMsg );
            return true;
        }
        else if( pSoundMsg->Cmd( plSoundMsg::kRemoveCallbacks ) )
        {
            RemoveCallbacks( pSoundMsg );
            return true;
        }
        return false;
    }

    plListenerMsg *listenMsg = plListenerMsg::ConvertNoRef( pMsg );
    if( listenMsg != nil )
    {
        if( fSoftOcclusionRegion != nil )
        {
            // The EAX settings have 0 as the start value and 1 as the end, and since start
            // translates to "inside the soft region", it's reversed of what the region gives us
            fEAXSettings.SetOcclusionSoftValue( 1.f - fSoftOcclusionRegion->GetListenerStrength() );
            IRefreshEAXSettings();
        }
        return true;
    }

    return plSynchedObject::MsgReceive( pMsg );
}

void plSound::ForceLoad()
{
    if( !IsPropertySet( kPropLoadOnlyOnCall ) )
        return;

    LoadSound( IsPropertySet( kPropIs3DSound ) );
}

void plSound::ForceUnload( void )
{
    if( !IsPropertySet( kPropLoadOnlyOnCall ) )
        return;

    Stop();
    IFreeBuffers();
}

bool plSound::ILoadDataBuffer( void )
{
    if(!fDataBufferLoaded)
    {
        plSoundBuffer *buffer = (plSoundBuffer *)fDataBufferKey->RefObject();
        if(!buffer)
        {
            hsAssert(false, "unable to load sound buffer");
            plStatusLog::AddLineS("audio.log", "Unable to load sound buffer: %s", GetKeyName().c_str());
            return false;
        }
        SetLength( buffer->GetDataLengthInSecs() );
        fDataBufferLoaded = true;
    }
    return true;
}

void plSound::FreeSoundData() 
{
    if(!fDataBufferKey) return; // for plugins
    plSoundBuffer *buffer = (plSoundBuffer *) fDataBufferKey->ObjectIsLoaded();
    if(buffer)
    {
        buffer->UnLoad();
    }
}

void plSound::IUnloadDataBuffer( void )
{
    if(fDataBufferLoaded)
    {
        fDataBufferLoaded = false;
        fDataBufferKey->UnRefObject();
    }
}

/////////////////////////////////////////////////////////////////////////
// calling preload will cause the sound to play once loaded
plSoundBuffer::ELoadReturnVal plSound::IPreLoadBuffer( hsBool playWhenLoaded, hsBool isIncidental /* = false */ )
{
    if(!ILoadDataBuffer())
    {
        return plSoundBuffer::kError;
    }

    plSoundBuffer *buffer = (plSoundBuffer *)fDataBufferKey->ObjectIsLoaded();

    if(buffer && buffer->IsValid() )
    {
        plProfile_BeginTiming( SoundLoadTime );
        plSoundBuffer::ELoadReturnVal retVal = buffer->AsyncLoad(buffer->HasFlag(plSoundBuffer::kStreamCompressed) ? plAudioFileReader::kStreamNative : plAudioFileReader::kStreamWAV);
        if(retVal == plSoundBuffer::kPending)
        {
            fPlayWhenLoaded = playWhenLoaded;
            fLoading = true;
        }
        
        plProfile_EndTiming( SoundLoadTime );
    
        return retVal;
    }
    else
    {
        return plSoundBuffer::kError;
    }
}

const char *plSound::GetFileName( void ) const
{
    if(fDataBufferKey->ObjectIsLoaded())
    {
        return ((plSoundBuffer *)fDataBufferKey->ObjectIsLoaded())->GetFileName();
    }

    return nil;
}

/////////////////////////////////////////////////////////////////////////
//  WARNING: to do this right, we have to load the data buffer in, which could
//  force an early load of the sound if you're just calling this on a whim. So
//  it's best to call this right before you're going to load it anyway (or
//  when it's already loaded).
//  Note that if we already set the length (like at export time), we never need
//  to load the sound, so the optimization at export time is all ready to plug-
//  and-play...
double plSound::GetLength( void )
{
    if( ( (double)fLength == 0.f ) )
        ILoadDataBuffer();

    return fLength;
}

void plSound::ISetSoftRegion( plSoftVolume *region )
{
    /// We're either registering or unregistering
    if( fSoftRegion == nil && region != nil )
        RegisterOnAudioSys();
    else if( fSoftRegion != nil && region == nil )
        UnregisterOnAudioSys();

    fSoftRegion = region;
    fSoftVolume = 0.f;      // Set to zero until we can get our processing call
}

void plSound::ISetSoftOcclusionRegion( plSoftVolume *region )
{
    /// We're either registering or unregistering for listener messages
    if( fSoftOcclusionRegion == nil && region != nil )
    {
        plgDispatch::Dispatch()->RegisterForExactType( plListenerMsg::Index(), GetKey() );
    }
    else if( fSoftOcclusionRegion != nil && region == nil )
    {
        plgDispatch::Dispatch()->UnRegisterForExactType( plListenerMsg::Index(), GetKey() );
    }

    fSoftOcclusionRegion = region;
}

/////////////////////////////////////////////////////////////////////////
//  This function calculates our new softVolume value. Used both to update the
//  said value and so the audio system can rank us in importance.
float plSound::CalcSoftVolume( hsBool enable, float distToListenerSquared )
{
    // Do distance-based attenuation ourselves
#if MCN_HACK_OUR_ATTEN
    if( IsPropertySet( kPropIs3DSound ) )
    {
        float    minDist = (float)GetMin();
        if( distToListenerSquared <= minDist * minDist )
        {
            fDistAttenuation = 1.f;
        }
        else
        {
            float    maxDist = (float)GetMax();
            if( distToListenerSquared >= maxDist * maxDist )
            {
                fDistAttenuation = 0.f;
            }
            else
            {
                float d = (float)sqrt( distToListenerSquared );
                fDistAttenuation = minDist / d;

                // The following line ramps it to 0 at the maxDistance. Kinda klunky, but good for now I guess...
//              fDistAttenuation *= 1.f - ( 1.f / ( maxDist - minDist ) ) * ( d - minDist );
            }
        }
    }
    else
        fDistAttenuation = 1.f;
#endif
    // At the last 50% of our distance attenuation (squared, so it really is farther than that), 
    // ramp down to 0 so we don't get annoying popping when we stop stuff
    if( IsPropertySet( kPropIs3DSound ) )
    {
        float    maxDistSquared = (float)( GetMax() * GetMax() );
        float    distToStartSquared = (float)(maxDistSquared * 0.50);

        if( maxDistSquared < 0.f )  // Happens when the max distance is REALLY big
        {
            maxDistSquared = distToListenerSquared + 1.f;   // :)
            distToStartSquared = maxDistSquared;
        }

        if( distToListenerSquared > maxDistSquared )
            fDistAttenuation = 0.f;
        else if( distToListenerSquared > distToStartSquared )
            fDistAttenuation = ( maxDistSquared - distToListenerSquared ) / ( maxDistSquared - distToStartSquared );
        else
            fDistAttenuation = 1.f;

        fDistToListenerSquared = distToListenerSquared;
    }
    else
    {
        fDistAttenuation = 1.f;
        fDistToListenerSquared = 0.f;
    }

    // Attenuate based on our soft region, if we have one
    if( !enable )
        // We apparently don't know jack. Let the audioSystem's decision rule
        fSoftVolume = 0.f;
    else if( fSoftRegion != nil )
        fSoftVolume = fSoftRegion->GetListenerStrength();
    else
        fSoftVolume = 1.f;

    return fSoftVolume;
}

/////////////////////////////////////////////////////////////////////////
//  Wee function for the audio system. This basically returns the effective
//  current volume of this sound. Useful for doing things like ranking all
//  sounds based on volume.
float plSound::GetVolumeRank( void )
{
    if( !IsPlaying() && !this->IActuallyPlaying() )
        return 0.f;

    float    rank = fSoftVolume * fDesiredVol;

    if( IsPropertySet( kPropIs3DSound ) )
    {
        float minDistSquared = (float)( GetMin() * GetMin() );
        float maxDistSquared = (float) (GetMax() * GetMax());
        hsPoint3 listenerPos = plgAudioSys::Sys()->GetCurrListenerPos();
        if( fDistToListenerSquared > minDistSquared )
        {
            float diff = maxDistSquared - minDistSquared;
            rank *= fabs((fDistToListenerSquared - maxDistSquared)) / diff;  
        }
    }

    return rank;
}

/////////////////////////////////////////////////////////////////////////
//  Tests to see whether, if we try to play this sound now, it'll actually
//  be able to play. Takes into account whether the sound is within range
//  of the listener and the current soft region value.
hsBool plSound::IWillBeAbleToPlay( void )
{
    if( fSoftVolume == 0.f )
        return false;

    return IsWithinRange( plgAudioSys::Sys()->GetCurrListenerPos(), nil );
}

/////////////////////////////////////////////////////////////////////////
//  Tests to see whether this sound is within range of the position given,
//  ignoring soft volumes.
hsBool plSound::IsWithinRange( const hsPoint3 &listenerPos, float *distSquared )
{
    if( !IsPropertySet( plSound::kPropIs3DSound ) )
    {
        if( distSquared != nil )
            *distSquared = 1.f;
        return true;
    }

    hsVector3   distance;
    hsPoint3    soundPos = GetPosition();

    distance.Set( &listenerPos, &soundPos );

    if( distSquared != nil )
        *distSquared = distance.MagnitudeSquared();

    if( GetMax() == 1000000000 )
        return true;

    float    soundRadius = (float)( GetMax() * GetMax() );

    return ( distance.MagnitudeSquared() <= soundRadius ) ? true : false;
}


//// ////////////////////////////////////////////////////////
//  Once the soft volume is calculated and our rank is computed, we can 
//  decide whether to actually enable or not.
//  Note: we might have been "enabled" by our Calc call, but the ranking
//  still could have disabled us, so we have to specify again whether
//  we're enabled.
//  Note: if we KNOW we're disabling this sound (out of range), Calc() doesn't
//  have to be called at all, and we can simply call this function with
//  enable = false.
void plSound::UpdateSoftVolume( hsBool enable, hsBool firstTime )
{
    fNotHighEnoughPriority = !enable;

    // Don't do any of this special stuff that follows if we're not supposed to be playing
    if( IsPlaying() )
    {
        if( fSoftVolume * fDistAttenuation > 0.f && !fNotHighEnoughPriority )
        {
            if( fCurrFadeParams == &fCoolSoftVolumeTrickParams )
            {
                // Stop the fade, but since we are updating the softvolume with the intention of being audible
                // tell StopFade not to set the soft volume to zero.
                IStopFade(false, false);
            }
            if( !IActuallyPlaying() )
            {
                // Must've been stopped from being out of range. Start up again...

                // Synch up to our start time.
                // If this sound is auto starting and is background music, get the current time so we don't start 
                // with the play cursor already into the piece.
                if(IsPropertySet(kPropAutoStart) && fType == kBackgroundMusic) fVirtualStartTime = hsTimer::GetSysSeconds();
                ISynchedPlay( fVirtualStartTime );
            }
        }
        else if( fCurrFadeParams != &fCoolSoftVolumeTrickParams && IActuallyPlaying() )
        {
            // Start our special trick, courtesy of Brice. Basically, we don't 
            // stop the sound immediately, but rather let it get to the end of
            // the sound and loop once more. This way, if we go away and come back soon
            // enough, it will be continuing as we expect it to, but if we wait long enough,
            // it'll stop, saving processing time.

            // Note: we just do it as a fade because it makes it easier on us that way!
            fCoolSoftVolumeTrickParams.fCurrTime = 0.f;
            fCoolSoftVolumeTrickParams.fLengthInSecs = firstTime ? 0.f : (float)fLength + ( (float)fLength - (float)GetTime() );
            fCoolSoftVolumeTrickParams.fStopWhenDone = true;
            fCoolSoftVolumeTrickParams.fFadeSoftVol = true;
            fCoolSoftVolumeTrickParams.fType = plFadeParams::kLinear;
            fCoolSoftVolumeTrickParams.fVolStart = fSoftVolume; // Don't actually change the volume this way
            fCoolSoftVolumeTrickParams.fVolEnd = 0.f;

            IStartFade( &fCoolSoftVolumeTrickParams );

            plProfile_Inc( WaitingToDie );
        }
    }

    RefreshVolume();
}

/////////////////////////////////////////////////////////////////////////
// Returns the current volume, attenuated
float plSound::QueryCurrVolume( void ) const
{
    return IAttenuateActualVolume( fCurrVolume ) * IGetChannelVolume();
}

/////////////////////////////////////////////////////////////////////////
//  Used by ISetActualVolume(). Does the final attenuation on a volume before
//  sending it to the sound processing. Only does soft regions for now.
float plSound::IAttenuateActualVolume( float volume ) const
{
    if( fNotHighEnoughPriority )
        return 0.f;
    
    volume *= fSoftVolume;

    if( IsPropertySet( kPropIs3DSound ) )
        volume *= fDistAttenuation;

    return volume;
}

void plSound::Activate(hsBool forcePlay)
{
    // Our actual state...
    fActive = true;

    // re-create the sound state here:
    if( forcePlay || fPlayOnReactivate )
    {
        ISynchedPlay( hsTimer::GetSysSeconds() );
        fPlayOnReactivate = false;
    }

    RegisterOnAudioSys();
    SetMuted(plgAudioSys::IsMuted());
}

void plSound::DeActivate( void )
{
    UnregisterOnAudioSys();

    if( fActive )
    {
        if( IsPlaying() )
        {
            Stop();
            fPlayOnReactivate = true;
        }
        else
            fPlayOnReactivate = false;
    }

    fActive = false;
}

/////////////////////////////////////////////////////////////////////////
//  Tell the audio system about ourselves.
void plSound::RegisterOnAudioSys( void )
{
    if( !fRegistered )
    {
        plgAudioSys::RegisterSoftSound(GetKey());
        fRegistered = true;
    }
}

/////////////////////////////////////////////////////////////////////////
//  Tell the audio system to stop caring about us
void plSound::UnregisterOnAudioSys( void )
{
    if( fRegistered )
    {
        plgAudioSys::UnregisterSoftSound(GetKey());
        fRegistered = false;
    }
}

/////////////////////////////////////////////////////////////////////////
//  Called by the audio system when we've been booted off (audio system is
//  shutting down). Normally, we should already be shut down, but in case
//  we're not, this function makes sure everything is cleaned up before
//  the audio system itself shuts down.
void plSound::ForceUnregisterFromAudioSys( void )
{
    DeActivate();
    fRegistered = false;
}

void plSound::Read(hsStream* s, hsResMgr* mgr)
{
    plSynchedObject::Read(s, mgr);

    IRead( s, mgr );

    // If we're autostart, start playing
    if( IsPropertySet( kPropAutoStart ) )
        Play();

    // Make sure we synch or don't synch
    if( IsPropertySet( kPropLocalOnly ) )
        SetLocalOnly(true);

    // If we're not playing, but we're going to, and we're going to fade in,
    // then our current state is faded out, so set fFading
    if( fFadeInParams.fLengthInSecs > 0 && !fPlaying )
        fFading = true;
    else if( fFadeInParams.fLengthInSecs <= 0 && !fPlaying )
        fFading = false;

    ILoadDataBuffer();      // make sure our sound buffer is loaded

    // Force load on read
    if( !fLoadOnDemandFlag || IsPropertySet( kPropDisableLOD ) )
    {
        LoadSound( IsPropertySet( kPropIs3DSound ) );
    }
    else
    {
        // Loading on demand, but we still need the length. But that's ok, we'll get it when we get the fDataBuffer ref.
        // But we want to preload the data, so go ahead and do that
        if( !fLoadFromDiskOnDemand && !IsPropertySet( kPropLoadOnlyOnCall ) && fPriority <= plgAudioSys::GetPriorityCutoff())
        {           
            IPreLoadBuffer(false);          
        }
    }
}

void plSound::Write(hsStream* s, hsResMgr* mgr)
{
    plSynchedObject::Write(s, mgr);
    IWrite( s, mgr );
}

void plSound::IRead( hsStream *s, hsResMgr *mgr )
{
    fPlaying = s->ReadBool();
    fVirtualStartTime = hsTimer::GetSysSeconds();   // Need if we're autostart
    fTime = s->ReadLEDouble();
    fMaxFalloff = s->ReadLE32();
    fMinFalloff = s->ReadLE32();
    s->ReadLE( &fCurrVolume );
    s->ReadLE( &fDesiredVol );

    /// mcn debugging - Thanks to some of my older sound code, it's possible that a few volumes
    /// will come in too large. This will only happen with scenes that were exported with that intermediate
    /// code, which should be limited to my test scenes locally. Otherwise, things should be fine. This
    /// is to compensate for those bogus files. (The fix is to reset the volume in MAX, since the bogusness
    /// is in the range of the volume slider itself).
    if( fDesiredVol > 1.f )
        fDesiredVol = 1.f;
    if( fCurrVolume > 1.f )
        fCurrVolume = 1.f;
    fMaxVolume = fDesiredVol;

    fOuterVol = s->ReadLE32();
    fInnerCone = s->ReadLE32();
    fOuterCone = s->ReadLE32();
    s->ReadLE( &fFadedVolume );
    s->ReadLE( &fProperties );

    fType = s->ReadByte();
    fPriority = s->ReadByte();

    // HACK FOR OLDER EXPORTERS that thought Auto-start meant set fPlaying true
    if( fPlaying )
        SetProperty( kPropAutoStart, true );

    // Read in fade params
    fFadeInParams.Read( s );
    fFadeOutParams.Read( s );

    // Read in soft volume key
    mgr->ReadKeyNotifyMe( s, new plGenRefMsg( GetKey(), plRefMsg::kOnCreate, 0, kRefSoftVolume ), plRefFlags::kActiveRef );

    // Read in the data buffer key
    fDataBufferKey = mgr->ReadKey( s );

    // EAX params
    fEAXSettings.Read( s );

    // EAX soft keys
    mgr->ReadKeyNotifyMe( s, new plGenRefMsg( GetKey(), plRefMsg::kOnCreate, 0, kRefSoftOcclusionRegion ), plRefFlags::kActiveRef );
}

void plSound::IWrite( hsStream *s, hsResMgr *mgr )
{
    s->WriteBool(fPlaying);
    s->WriteLEDouble(fTime);
    s->WriteLE32(fMaxFalloff);
    s->WriteLE32(fMinFalloff);
    s->WriteLE( fCurrVolume );
    s->WriteLE( fDesiredVol );
    s->WriteLE32(fOuterVol);
    s->WriteLE32(fInnerCone);
    s->WriteLE32(fOuterCone);
    s->WriteLE( fFadedVolume );
    s->WriteLE( fProperties );
    s->WriteByte( fType );
    s->WriteByte( fPriority );
    
    // Write out fade params
    fFadeInParams.Write( s );
    fFadeOutParams.Write( s );

    // Write out soft volume key
    mgr->WriteKey( s, fSoftRegion );
    
    // Write out data buffer key
    if(fDataBuffer)
        mgr->WriteKey( s, fDataBuffer->GetKey() );
    else
        mgr->WriteKey( s, fDataBufferKey );

    // EAX params
    fEAXSettings.Write( s );

    // EAX Soft keys
    mgr->WriteKey( s, fSoftOcclusionRegion );
}

void plSound::plFadeParams::Read( hsStream *s )
{
    s->ReadLE( &fLengthInSecs );
    s->ReadLE( &fVolStart );
    s->ReadLE( &fVolEnd );
    s->ReadLE( &fType );
    s->ReadLE( &fCurrTime );
    s->ReadLE( &fStopWhenDone );
    s->ReadLE( &fFadeSoftVol );
}

void plSound::plFadeParams::Write( hsStream *s )
{
    s->WriteLE( fLengthInSecs );
    s->WriteLE( fVolStart );
    s->WriteLE( fVolEnd );
    s->WriteLE( fType );
    s->WriteLE( fCurrTime );
    s->WriteLE( fStopWhenDone );
    s->WriteLE( fFadeSoftVol );
}

float plSound::plFadeParams::InterpValue( void )
{
    float    val;

    switch( fType )
    {
        case kLinear:
            val = ( ( fCurrTime / fLengthInSecs ) * ( fVolEnd - fVolStart ) ) + fVolStart;
            break;
        case kLogarithmic:
            val = fCurrTime / fLengthInSecs;
            val = ( ( val * val ) * ( fVolEnd - fVolStart ) ) + fVolStart;
            break;
        case kExponential:
            val = fCurrTime / fLengthInSecs;
            val = ( (float)sqrt( val ) * ( fVolEnd - fVolStart ) ) + fVolStart;
            break;
        default:
            val = 0.f;
    }
    return val;
}

void plSound::SetFadeInEffect( plSound::plFadeParams::Type type, float length )
{
    fFadeInParams.fLengthInSecs = length;
    fFadeInParams.fType = type;
    fFadeInParams.fVolStart = 0.f;  // Will be set when activated
    fFadeInParams.fVolEnd = 1.f;    // Will be set when activated
    fFadeInParams.fCurrTime = -1.f;

    // If we're not playing, but we're going to, and we're going to fade in,
    // then our current state is faded out, so set fFading
    if( fFadeInParams.fLengthInSecs > 0 && !fPlaying )
        fFading = true;
    else if( fFadeInParams.fLengthInSecs <= 0 && !fPlaying )
        fFading = false;
}

void plSound::SetFadeOutEffect( plSound::plFadeParams::Type type, float length )
{
    fFadeOutParams.fLengthInSecs = length;
    fFadeOutParams.fType = type;
    fFadeOutParams.fVolStart = 1.f; // Will be set when activated
    fFadeOutParams.fVolEnd = 0.f;   // Will be set when activated
    fFadeOutParams.fCurrTime = -1.f;
    fFadeOutParams.fStopWhenDone = true;
}

plDrawableSpans* plSound::CreateProxy(const hsMatrix44& l2w, hsGMaterial* mat, hsTArray<uint32_t>& idx, plDrawableSpans* addTo)
{
    plDrawableSpans* myDraw = addTo;

    if( fOuterCone < 360 )
    {
        float len = (float)GetMax();
        float halfAng = hsDegreesToRadians(float(fInnerCone) * 0.5f);
        float radius = len * tanf(halfAng);
        if( fInnerCone < 180 )
            len = -len;
        myDraw = plDrawableGenerator::GenerateConicalDrawable(
            radius, 
            len, 
            mat, 
            l2w, 
            true,
            &hsColorRGBA().Set(1.f, 0.5f, 0.5f, 1.f),
            &idx,
            myDraw);

        len = (float)GetMin();
        halfAng = hsDegreesToRadians(float(fOuterCone) * 0.5f);
        radius = len * tanf(halfAng);
        if( fOuterCone < 180 )
            len = -len;

        myDraw = plDrawableGenerator::GenerateConicalDrawable(
            radius, 
            len, 
            mat, 
            l2w, 
            true,
            &hsColorRGBA().Set(0.25f, 0.25f, 0.5f, 1.f),
            &idx,
            myDraw);
    }
    else
    {
        myDraw = plDrawableGenerator::GenerateSphericalDrawable(
            hsPoint3(0,0,0), 
            (float)GetMin(), 
            mat, 
            l2w, 
            true,
            &hsColorRGBA().Set(1.f, 0.5f, 0.5f, 1.f),
            &idx,
            myDraw);

        myDraw = plDrawableGenerator::GenerateSphericalDrawable(
            hsPoint3(0,0,0), 
            (float)GetMax(), 
            mat, 
            l2w, 
            true,
            &hsColorRGBA().Set(0.25f, 0.25f, 0.5f, 1.f),
            &idx,
            myDraw);
    }
    return myDraw;
}


// call when state has changed
hsBool plSound::DirtySynchState(const char* sdlName /* kSDLSound */, uint32_t sendFlags)
{
    /*
    if( sdlName == nil )
        sdlName = kSDLSound;

    if( fOwningSceneObject != nil )
        return fOwningSceneObject->DirtySynchState(sdlName, sendFlags);
*/
    return false;
}


//////////////////////////////////////////////////////////////////////////////
//// plSoundVolumeApplicator /////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

void plSoundVolumeApplicator::IApply( const plAGModifier *mod, double time )
{
    plScalarChannel *chan = plScalarChannel::ConvertNoRef( fChannel );
    if(chan)
    {
        float volume = chan->Value( time );

        float digitalVolume = (float)pow( 10.f, volume / 20.f );

        // Find the audio interface and thus the plSound from it
        plSceneObject *so = mod->GetTarget( 0 );
        if( so != nil )
        {
            const plAudioInterface *ai = so->GetAudioInterface();
            if( ai != nil && fIndex < ai->GetNumSounds() )
            {
                plSound *sound = ai->GetSound( fIndex );
                if( sound != nil )
                {
                    sound->SetVolume( digitalVolume );
                    return;
                }
            }
        }
    }
}

plAGApplicator *plSoundVolumeApplicator::CloneWithChannel( plAGChannel *channel )
{
    plSoundVolumeApplicator *clone = (plSoundVolumeApplicator *)plAGApplicator::CloneWithChannel( channel );
    clone->fIndex = fIndex;
    return clone;
}

void plSoundVolumeApplicator::Write( hsStream *stream, hsResMgr *mgr )
{
    plAGApplicator::Write( stream, mgr );
    stream->WriteLE32( fIndex );
}

void plSoundVolumeApplicator::Read( hsStream *s, hsResMgr *mgr )
{
    plAGApplicator::Read( s, mgr );
    fIndex = s->ReadLE32();
}