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

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//  plEAXEffects - Various classes and wrappers to support EAX              //
//                  acceleration.                                           //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////

#include "hsTypes.h"
#include "hsThread.h"
#ifndef EAX_SDK_AVAILABLE
#include <EFX-Util.h>
#endif
#include "plEAXEffects.h"
#include "plAudioCore/plAudioCore.h"
#include "plDSoundBuffer.h"
#include "hsTemplates.h"
#include "plEAXListenerMod.h"
#include "hsStream.h"
#include "plAudioSystem.h"
#include <al.h>

#if HS_BUILD_FOR_WIN32
#    ifdef DX_OLD_SDK
#        include <dxerr9.h>
#    else
#        include <dxerr.h>
#    endif
#endif

#ifdef EAX_SDK_AVAILABLE
#include <eax.h>
#include <eax-util.h>
#include <eaxlegacy.h>
#endif
#include "plStatusLog/plStatusLog.h"

#define kDebugLog   if( myLog != nil ) myLog->AddLineF(

#ifdef EAX_SDK_AVAILABLE
static EAXGet           s_EAXGet;
static EAXSet           s_EAXSet;
#endif


//// GetInstance /////////////////////////////////////////////////////////////

plEAXListener   &plEAXListener::GetInstance( void )
{
    static plEAXListener    instance;
    return instance;
}

//// Constructor/Destructor //////////////////////////////////////////////////

plEAXListener::plEAXListener()
{
    fInited = false;
    ClearProcessCache();
}

plEAXListener::~plEAXListener()
{
    Shutdown();
}

//// Init ////////////////////////////////////////////////////////////////////

hsBool  plEAXListener::Init( void )
{
#ifdef EAX_SDK_AVAILABLE
    if( fInited )
        return true;

    if(!alIsExtensionPresent((ALchar *)"EAX4.0"))       // is eax 4 supported
    {
        if(!alIsExtensionPresent((ALchar *) "EAX4.0Emulated"))      // is an earlier version of eax supported
        {
            plStatusLog::AddLineS("audio.log", "EAX not supported");
            return false;
        }
        else
        {
            plStatusLog::AddLineS("audio.log", "EAX 4 Emulated supported");
        }
    }
    else
    {
        plStatusLog::AddLineS("audio.log", "EAX 4 available");
    }
    
    // EAX is supported 
    s_EAXGet = (EAXGet)alGetProcAddress((ALchar *)"EAXGet");
    s_EAXSet = (EAXSet)alGetProcAddress((ALchar *)"EAXSet");
    if(!s_EAXGet || ! s_EAXSet)
    {
        IFail( "EAX initialization failed", true );
        return false;
    }
    fInited = true;

#if 1
    try
    {
        // Make an EAX call here to prevent problems on WDM driver
        unsigned int lRoom = -10000;

        SetGlobalEAXProperty(DSPROPSETID_EAX_ListenerProperties, DSPROPERTY_EAXLISTENER_ROOM, &lRoom, sizeof( unsigned int ));
    }
    catch ( ... )
    {
        plStatusLog::AddLineS("audio.log", "Unable to set EAX Property Set, disabling EAX...");
        plgAudioSys::EnableEAX(false);
        return false;
    }
#endif

    ClearProcessCache();

    return true;
#else /* !EAX_SDK_AVAILABLE */
    plStatusLog::AddLineS("audio.log", "EAX disabled in this build");
    return false;
#endif
}

//// Shutdown ////////////////////////////////////////////////////////////////

void    plEAXListener::Shutdown( void )
{
    if( !fInited )
        return;

#ifdef EAX_SDK_AVAILABLE
    s_EAXSet = nil;
    s_EAXGet = nil;
#endif
    IRelease();
}


bool plEAXListener::SetGlobalEAXProperty(GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize )
{
    if(fInited)
    {
#ifdef EAX_SDK_AVAILABLE
        return s_EAXSet(&guid, ulProperty, 0, pData, ulDataSize) == AL_NO_ERROR;
#endif
    }
    return false;
}

bool plEAXListener::GetGlobalEAXProperty(GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize)
{
    if(fInited)
    {
#ifdef EAX_SDK_AVAILABLE
        return s_EAXGet(&guid, ulProperty, 0, pData, ulDataSize) == AL_NO_ERROR;
#endif
    }
    return false;
}

bool plEAXSource::SetSourceEAXProperty(unsigned source, GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize)
{
#ifdef EAX_SDK_AVAILABLE
    return s_EAXSet(&guid, ulProperty, source, pData, ulDataSize) == AL_NO_ERROR;
#else
    return false;
#endif
}

bool plEAXSource::GetSourceEAXProperty(unsigned source, GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize)
{
#ifdef EAX_SDK_AVAILABLE
    return s_EAXGet(&guid, ulProperty, source, pData, ulDataSize) == AL_NO_ERROR;
#else
    return false;
#endif
}


//// IRelease ////////////////////////////////////////////////////////////////

void    plEAXListener::IRelease( void )
{
    fInited = false;
}

//// IFail ///////////////////////////////////////////////////////////////////

void    plEAXListener::IFail(  hsBool major )
{
    plStatusLog::AddLineS( "audio.log", plStatusLog::kRed,
                            "ERROR in plEAXListener: Could not set global eax params");

    if( major )
        IRelease();
}

void    plEAXListener::IFail( const char *msg, hsBool major )
{
    plStatusLog::AddLineS( "audio.log", plStatusLog::kRed,
                            "ERROR in plEAXListener: %s", msg );

    if( major )
        IRelease();
}

//// IMuteProperties /////////////////////////////////////////////////////////
//  Mutes the given properties, so if you have some props that you want
//  half strength, this function will do it for ya.

void    plEAXListener::IMuteProperties( EAXREVERBPROPERTIES *props, hsScalar percent )
{
    // We only mute the room, roomHF and roomLF, since those control the overall effect
    // application. All three are a direct linear blend as defined by eax-util.cpp, so
    // this should be rather easy

    hsScalar invPercent = 1.f - percent;

    // The old way, as dictated by EAX sample code...
#ifdef EAX_SDK_AVAILABLE
    props->lRoom   = (int)( ( (float)EAXLISTENER_MINROOM   * invPercent ) + ( (float)props->lRoom   * percent ) );
#endif
    // The new way, as suggested by EAX guys...
//  props->lRoom = (int)( 2000.f * log( invPercent ) ) + props->lRoom;

//  props->lRoomLF = (int)( ( (float)EAXLISTENER_MINROOMLF * invPercent ) + ( (float)props->lRoomLF * percent ) );
//  props->lRoomHF = (int)( ( (float)EAXLISTENER_MINROOMHF * invPercent ) + ( (float)props->lRoomHF * percent ) );
}

//// ClearProcessCache ///////////////////////////////////////////////////////
//  Clears the cache settings used to speed up ProcessMods(). Call whenever
//  the list of mods changed.

void    plEAXListener::ClearProcessCache( void )
{
    fLastBigRegion = nil;
    fLastModCount = -1;
    fLastWasEmpty = false;
    fLastSingleStrength = -1.f;
}

//// ProcessMods /////////////////////////////////////////////////////////////
//  9.13.02 mcn - Updated the caching method. Now fLastBigRegion will point
//  to a region iff it's the only region from the last pass that had a
//  strength > 0. The reason we can't do our trick before is because even if
//  we have a region w/ strength 1, another region might power up from 1 and
//  thus suddenly alter the total reverb settings. Thus, the only time we 
//  can wisely skip is if our current big region == fLastBigRegion *and*
//  the total strength is the same.

void    plEAXListener::ProcessMods( hsTArray<plEAXListenerMod *> &modArray )
{
#ifdef EAX_SDK_AVAILABLE
    int     i;
    float   totalStrength;
    hsBool  firstOne;

    plEAXListenerMod        *thisBigRegion = nil;
    EAXLISTENERPROPERTIES   finalProps;
    static int oldTime = timeGetTime();     // Get starting time
    int newTime;
    hsBool bMorphing = false;

    static plStatusLog  *myLog = nil;

    if( myLog == nil && plgAudioSys::AreExtendedLogsEnabled() )
        myLog = plStatusLogMgr::GetInstance().CreateStatusLog( 30, "EAX Reverbs", plStatusLog::kFilledBackground | plStatusLog::kDeleteForMe | plStatusLog::kDontWriteFile );
    else if( myLog != nil && !plgAudioSys::AreExtendedLogsEnabled() )
    {
        delete myLog;
        myLog = nil;
    }

    if( myLog != nil )
        myLog->Clear();

    if( modArray.GetCount() != fLastModCount )
    {
        kDebugLog "Clearing cache..." );
        ClearProcessCache();    // Code path changed, clear the entire cache
        fLastModCount = modArray.GetCount();
    }
    else
    {
        kDebugLog "" );
    }

    if( modArray.GetCount() > 0 )
    {
        kDebugLog "%d regions to calc", modArray.GetCount() );

        // Reset and find a new one if applicable
        thisBigRegion = nil;

        // Accumulate settings from all the active listener regions (shouldn't be too many, we hope)
        totalStrength = 0.f;
        firstOne = true;
        for( i = 0; i < modArray.GetCount(); i++ )
        {
            float strength = modArray[ i ]->GetStrength();
            kDebugLog "%4.2f - %s", strength, modArray[ i ]->GetKey()->GetUoid().GetObjectName() );
            if( strength > 0.f )
            {
                // fLastBigRegion will point to a region iff it's the only region w/ strength > 0
                if( totalStrength == 0.f )
                    thisBigRegion = modArray[ i ];
                else
                    thisBigRegion = nil;

                if( firstOne )
                {
                    // First one, just init to it
                    memcpy( &finalProps, modArray[ i ]->GetListenerProps(), sizeof( finalProps ) );
                    totalStrength = strength;
                    firstOne = false;
                }
                else
                {
                    hsScalar scale = strength / ( totalStrength + strength );
                    EAX3ListenerInterpolate( &finalProps, modArray[ i ]->GetListenerProps(), scale, &finalProps, false );
                    totalStrength += strength;
                    bMorphing = true;
                }
                
                if( totalStrength >= 1.f )
                    break;
            }
        }

        if( firstOne )
        {
            // No regions of strength > 0, so just make it quiet
            kDebugLog "Reverb should be quiet" );
            if( fLastWasEmpty )
                return;

            memcpy( &finalProps, &EAX30_ORIGINAL_PRESETS[ ORIGINAL_GENERIC ], sizeof( EAXLISTENERPROPERTIES ) );
            finalProps.lRoom = EAXLISTENER_MINROOM;
//          finalProps.lRoomLF = EAXLISTENER_MINROOMLF;
//          finalProps.lRoomHF = EAXLISTENER_MINROOMHF;
            fLastWasEmpty = true;
            fLastBigRegion = nil;
            fLastSingleStrength = -1.f;
        }
        else 
        {
            fLastWasEmpty = false;

            if( thisBigRegion == fLastBigRegion && totalStrength == fLastSingleStrength )
                // Cached values should be the same, so we can bail at this point
                return;

            fLastBigRegion = thisBigRegion;
            fLastSingleStrength = ( thisBigRegion != nil ) ? totalStrength : -1.f;

            if( totalStrength < 1.f )
            {
                kDebugLog "Total strength < 1; muting result" );
                // All of them together is less than full strength, so mute our result
                IMuteProperties( &finalProps, totalStrength );
            }
        }
    }
    else
    {
        kDebugLog "No regions at all; disabling reverb" );
        // No regions whatsoever, so disable listener props entirely
        if( fLastWasEmpty )
            return;

        memcpy( &finalProps, &EAX30_ORIGINAL_PRESETS[ ORIGINAL_GENERIC ], sizeof( EAXLISTENERPROPERTIES ) );
        finalProps.lRoom = EAXLISTENER_MINROOM;
//      finalProps.lRoomLF = EAXLISTENER_MINROOMLF;
//      finalProps.lRoomHF = EAXLISTENER_MINROOMHF;
        fLastWasEmpty = true;
    }

    // if were morphing between regions, do 10th of a second check, otherwise just let it 
    // change due to opt out(caching) feature.
    if(bMorphing)
    {
        newTime = timeGetTime();

        // Update, at most, ten times per second
        if((newTime - oldTime) < 100) return;
            
        oldTime = newTime;      // update time
    }
//finalProps.flAirAbsorptionHF *= 0.3048f; // Convert to feet
    //kDebugLog "** Updating property set **" );


    if(!SetGlobalEAXProperty(DSPROPSETID_EAX_ListenerProperties, DSPROPERTY_EAXLISTENER_ALLPARAMETERS, &finalProps, sizeof( finalProps )))
    {
        IFail(  false );
    }
#endif /* EAX_SDK_AVAILABLE */
}


//////////////////////////////////////////////////////////////////////////////
//// Source Settings /////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

//// Constructor/Destructor //////////////////////////////////////////////////

plEAXSourceSettings::plEAXSourceSettings()
{
    fDirtyParams = kAll;
    Enable( false );
}

plEAXSourceSettings::~plEAXSourceSettings()
{
}

//// Read/Write/Set //////////////////////////////////////////////////////////

void    plEAXSourceSettings::Read( hsStream *s )
{
    fEnabled = s->ReadBool();
    if( fEnabled )
    {
        fRoom = s->ReadLE16();
        fRoomHF = s->ReadLE16();
        fRoomAuto = s->ReadBool();
        fRoomHFAuto = s->ReadBool();

        fOutsideVolHF = s->ReadLE16();
        
        fAirAbsorptionFactor = s->ReadLEFloat();
        fRoomRolloffFactor = s->ReadLEFloat();
        fDopplerFactor = s->ReadLEFloat();
        fRolloffFactor = s->ReadLEFloat();

        fSoftStarts.Read( s );
        fSoftEnds.Read( s );

        fOcclusionSoftValue = -1.f;
        SetOcclusionSoftValue( s->ReadLEFloat() );

        fDirtyParams = kAll;
    }
    else
        Enable( false );    // Force init of params
}

void    plEAXSourceSettings::Write( hsStream *s )
{
    s->WriteBool( fEnabled );
    if( fEnabled )
    {
        s->WriteLE16( fRoom );
        s->WriteLE16( fRoomHF );
        s->WriteBool( fRoomAuto );
        s->WriteBool( fRoomHFAuto );

        s->WriteLE16( fOutsideVolHF );
        
        s->WriteLEFloat( fAirAbsorptionFactor );
        s->WriteLEFloat( fRoomRolloffFactor );
        s->WriteLEFloat( fDopplerFactor );
        s->WriteLEFloat( fRolloffFactor );

        fSoftStarts.Write( s );
        fSoftEnds.Write( s );

        s->WriteLEFloat( fOcclusionSoftValue );
    }
}

void    plEAXSourceSettings::SetRoomParams( Int16 room, Int16 roomHF, hsBool roomAuto, hsBool roomHFAuto )
{
    fRoom = room;
    fRoomHF = roomHF;
    fRoomAuto = roomAuto;
    fRoomHFAuto = roomHFAuto;
    fDirtyParams |= kRoom;
}

void    plEAXSourceSettings::Enable( hsBool e )
{
    fEnabled = e;
    if( !e )
    {
#ifdef EAX_SDK_AVAILABLE
        fRoom = EAXBUFFER_MINROOM;
        fRoomHF = EAXBUFFER_MINROOMHF;
#else
        fRoom = 0;
        fRoomHF = 0;
#endif
        fRoomAuto = true;
        fRoomHFAuto = true;

        fOutsideVolHF = 0;

        fAirAbsorptionFactor = 1.f;
        fRoomRolloffFactor = 0.f;
        fDopplerFactor = 0.f;
        fRolloffFactor = 0.f;

        fOcclusionSoftValue = 0.f;
        fSoftStarts.Reset();
        fSoftEnds.Reset();
        fCurrSoftValues.Reset();
        fDirtyParams = kAll;
    }
}

void    plEAXSourceSettings::SetOutsideVolHF( Int16 vol )
{
    fOutsideVolHF = vol;
    fDirtyParams |= kOutsideVolHF;
}

void    plEAXSourceSettings::SetFactors( hsScalar airAbsorption, hsScalar roomRolloff, hsScalar doppler, hsScalar rolloff )
{
    fAirAbsorptionFactor = airAbsorption;
    fRoomRolloffFactor = roomRolloff;
    fDopplerFactor = doppler;
    fRolloffFactor = rolloff;
    fDirtyParams |= kFactors;
}

void    plEAXSourceSettings::SetOcclusionSoftValue( hsScalar value )
{
    if( fOcclusionSoftValue != value )
    {
        fOcclusionSoftValue = value;
        IRecalcSofts( kOcclusion );
        fDirtyParams |= kOcclusion;
    }
}

void    plEAXSourceSettings::IRecalcSofts( UInt8 whichOnes )
{
    hsScalar    percent, invPercent;

    if( whichOnes & kOcclusion )
    {
        percent = fOcclusionSoftValue;
        invPercent = 1.f - percent;

        Int16       occ = (Int16)( ( (float)fSoftStarts.GetOcclusion() * invPercent ) + ( (float)fSoftEnds.GetOcclusion() * percent ) );
        hsScalar    lfRatio = (hsScalar)( ( fSoftStarts.GetOcclusionLFRatio() * invPercent ) + ( fSoftEnds.GetOcclusionLFRatio() * percent ) );
        hsScalar    roomRatio = (hsScalar)( ( fSoftStarts.GetOcclusionRoomRatio() * invPercent ) + ( fSoftEnds.GetOcclusionRoomRatio() * percent ) );
        hsScalar    directRatio = (hsScalar)( ( fSoftStarts.GetOcclusionDirectRatio() * invPercent ) + ( fSoftEnds.GetOcclusionDirectRatio() * percent ) );

        fCurrSoftValues.SetOcclusion( occ, lfRatio, roomRatio, directRatio );
    }
}


//////////////////////////////////////////////////////////////////////////////
//// Source Soft Settings ////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

void    plEAXSourceSoftSettings::Reset( void )
{
    fOcclusion = 0;
    fOcclusionLFRatio = 0.25f;
    fOcclusionRoomRatio = 1.5f;
    fOcclusionDirectRatio = 1.f;
}

void    plEAXSourceSoftSettings::Read( hsStream *s )
{
    s->ReadLE( &fOcclusion );
    s->ReadLE( &fOcclusionLFRatio );
    s->ReadLE( &fOcclusionRoomRatio );
    s->ReadLE( &fOcclusionDirectRatio );
}

void    plEAXSourceSoftSettings::Write( hsStream *s )
{
    s->WriteLE( fOcclusion );
    s->WriteLE( fOcclusionLFRatio );
    s->WriteLE( fOcclusionRoomRatio );
    s->WriteLE( fOcclusionDirectRatio );
}

void    plEAXSourceSoftSettings::SetOcclusion( Int16 occ, hsScalar lfRatio, hsScalar roomRatio, hsScalar directRatio )
{
    fOcclusion = occ;
    fOcclusionLFRatio = lfRatio;
    fOcclusionRoomRatio = roomRatio;
    fOcclusionDirectRatio = directRatio;
}

//// Constructor/Destructor //////////////////////////////////////////////////

plEAXSource::plEAXSource()
{   
    fInit = false;
    
}

plEAXSource::~plEAXSource()
{
    Release();
}

//// Init/Release ////////////////////////////////////////////////////////////

void    plEAXSource::Init( plDSoundBuffer *parent )
{
    fInit = true;
    // Init some default params
    plEAXSourceSettings defaultParams;
    SetFrom( &defaultParams, parent->GetSource() );
}

void    plEAXSource::Release( void )
{
    fInit = false;
}

hsBool  plEAXSource::IsValid( void ) const
{
    return true;
}

//// SetFrom /////////////////////////////////////////////////////////////////

void    plEAXSource::SetFrom( plEAXSourceSettings *settings, unsigned source, hsBool force )
{
    UInt32 dirtyParams;
    if(source == 0 || !fInit) 
        return;

    if( force )
        dirtyParams = plEAXSourceSettings::kAll;
    else
        dirtyParams = settings->fDirtyParams;
    
    // Do the params
#ifdef EAX_SDK_AVAILABLE
    if( dirtyParams & plEAXSourceSettings::kRoom )
    {
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_ROOM, &settings->fRoom, sizeof(settings->fRoom));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_ROOMHF, &settings->fRoomHF, sizeof(settings->fRoomHF));
    }

    if( dirtyParams & plEAXSourceSettings::kOutsideVolHF )
    {
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_OUTSIDEVOLUMEHF, &settings->fOutsideVolHF, sizeof(settings->fOutsideVolHF));
    }
    
    if( dirtyParams & plEAXSourceSettings::kFactors )
    {
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_DOPPLERFACTOR, &settings->fDopplerFactor, sizeof(settings->fDopplerFactor));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_ROLLOFFFACTOR, &settings->fRolloffFactor, sizeof(settings->fRolloffFactor));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_ROOMROLLOFFFACTOR, &settings->fRoomRolloffFactor, sizeof(settings->fRoomRolloffFactor));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_AIRABSORPTIONFACTOR, &settings->fAirAbsorptionFactor, sizeof(settings->fAirAbsorptionFactor));
    }

    if( dirtyParams & plEAXSourceSettings::kOcclusion )
    {
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_OCCLUSION, &settings->GetCurrSofts().fOcclusion, sizeof(settings->GetCurrSofts().fOcclusion));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_OCCLUSIONLFRATIO, &settings->GetCurrSofts().fOcclusionLFRatio, sizeof(settings->GetCurrSofts().fOcclusionLFRatio));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_OCCLUSIONROOMRATIO, &settings->GetCurrSofts().fOcclusionRoomRatio, sizeof(settings->GetCurrSofts().fOcclusionRoomRatio));
        SetSourceEAXProperty(source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_OCCLUSIONDIRECTRATIO, &settings->GetCurrSofts().fOcclusionDirectRatio, sizeof(settings->GetCurrSofts().fOcclusionDirectRatio));
    }
#endif /* EAX_SDK_AVAILABLE */

    settings->ClearDirtyParams();

    // Do all the flags in one pass
#ifdef EAX_SDK_AVAILABLE
    DWORD   flags;
    

    if( GetSourceEAXProperty( source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_FLAGS, &flags, sizeof( DWORD )) ) 
    {
        if( settings->GetRoomAuto() )
            flags |= EAXBUFFERFLAGS_ROOMAUTO;
        else
            flags &= ~EAXBUFFERFLAGS_ROOMAUTO;

        if( settings->GetRoomHFAuto() )
            flags |= EAXBUFFERFLAGS_ROOMHFAUTO;
        else
            flags &= ~EAXBUFFERFLAGS_ROOMHFAUTO;

        if( SetSourceEAXProperty( source, DSPROPSETID_EAX_BufferProperties, DSPROPERTY_EAXBUFFER_FLAGS, &flags, sizeof( DWORD ) ) ) 
        {
            return; // All worked, return here
        }   
        
        // Flag setting failed somehow
        hsAssert( false, "Unable to set EAX buffer flags" );
    }
#endif /* EAX_SDK_AVAILABLE */
}