path: root/indra/newview/llvoicevisualizer.cpp

/**
 * @file llvoicevisualizer.cpp
 * @brief Draws in-world speaking indicators.
 *
 * $LicenseInfo:firstyear=2000&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, 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
 * $/LicenseInfo$
 */

//----------------------------------------------------------------------
// Voice Visualizer
// author: JJ Ventrella
// (information about this stuff can be found in "llvoicevisualizer.h")
//----------------------------------------------------------------------
#include "llviewerprecompiledheaders.h"
#include "llviewercontrol.h"
#include "llglheaders.h"
#include "llsphere.h"
#include "llvoicevisualizer.h"
#include "llviewercamera.h"
#include "llviewerobject.h"
#include "llviewertexture.h"
#include "llviewertexturelist.h"
#include "llvoiceclient.h"
#include "llrender.h"
#include "llagent.h"

//brent's wave image
//29de489d-0491-fb00-7dab-f9e686d31e83


//--------------------------------------------------------------------------------------
// sound symbol constants
//--------------------------------------------------------------------------------------
const F32   HEIGHT_ABOVE_HEAD   = 0.3f;     // how many meters vertically above the av's head the voice symbol will appear
const F32   RED_THRESHOLD       = LLVoiceClient::OVERDRIVEN_POWER_LEVEL;        // value above which speaking amplitude causes the voice symbol to turn red
const F32   GREEN_THRESHOLD     = 0.2f;     // value above which speaking amplitude causes the voice symbol to turn green
const F32   FADE_OUT_DURATION   = 0.4f;     // how many seconds it takes for a pair of waves to fade away
const F32   EXPANSION_RATE      = 1.0f;     // how many seconds it takes for the waves to expand to twice their original size
const F32   EXPANSION_MAX       = 1.5f;     // maximum size scale to which the waves can expand before popping back to 1.0
const F32   WAVE_WIDTH_SCALE    = 0.03f;    // base width of the waves
const F32   WAVE_HEIGHT_SCALE   = 0.02f;    // base height of the waves
const F32   BASE_BRIGHTNESS     = 0.7f;     // gray level of the voice indicator when quiet (below green threshold)
const F32   DOT_SIZE            = 0.05f;    // size of the dot billboard texture
const F32   DOT_OPACITY         = 0.7f;     // how opaque the dot is
const F32   WAVE_MOTION_RATE    = 1.5f;     // scalar applied to consecutive waves as a function of speaking amplitude

//--------------------------------------------------------------------------------------
// gesticulation constants
//--------------------------------------------------------------------------------------
const F32 DEFAULT_MINIMUM_GESTICULATION_AMPLITUDE   = 0.2f;
const F32 DEFAULT_MAXIMUM_GESTICULATION_AMPLITUDE   = 1.0f;

//--------------------------------------------------------------------------------------
// other constants
//--------------------------------------------------------------------------------------
const LLVector3 WORLD_UPWARD_DIRECTION = LLVector3( 0.0f, 0.0f, 1.0f ); // Z is up in SL

//------------------------------------------------------------------
// Initialize the statics
//------------------------------------------------------------------
bool LLVoiceVisualizer::sPrefsInitialized   = false;
bool LLVoiceVisualizer::sLipSyncEnabled     = false;
F32* LLVoiceVisualizer::sOoh                = NULL;
F32* LLVoiceVisualizer::sAah                = NULL;
U32  LLVoiceVisualizer::sOohs               = 0;
U32  LLVoiceVisualizer::sAahs               = 0;
F32  LLVoiceVisualizer::sOohAahRate         = 0.0f;
F32* LLVoiceVisualizer::sOohPowerTransfer   = NULL;
U32  LLVoiceVisualizer::sOohPowerTransfers  = 0;
F32  LLVoiceVisualizer::sOohPowerTransfersf = 0.0f;
F32* LLVoiceVisualizer::sAahPowerTransfer   = NULL;
U32  LLVoiceVisualizer::sAahPowerTransfers  = 0;
F32  LLVoiceVisualizer::sAahPowerTransfersf = 0.0f;


//-----------------------------------------------
// constructor
//-----------------------------------------------
LLVoiceVisualizer::LLVoiceVisualizer( const U8 type )
    : LLHUDEffect(type)
{
    mCurrentTime                    = mTimer.getTotalSeconds();
    mPreviousTime                   = mCurrentTime;
    mStartTime                      = mCurrentTime;
    mVoiceSourceWorldPosition       = LLVector3( 0.0f, 0.0f, 0.0f );
    mSpeakingAmplitude              = 0.0f;
    mCurrentlySpeaking              = false;
    mVoiceEnabled                   = false;
    mMinGesticulationAmplitude      = DEFAULT_MINIMUM_GESTICULATION_AMPLITUDE;
    mMaxGesticulationAmplitude      = DEFAULT_MAXIMUM_GESTICULATION_AMPLITUDE;
    mSoundSymbol.mActive            = true;
    mSoundSymbol.mPosition          = LLVector3( 0.0f, 0.0f, 0.0f );

    mTimer.reset();

    const char* sound_level_img[] =
    {
        "voice_meter_dot.j2c",
        "voice_meter_rings.j2c",
        "voice_meter_rings.j2c",
        "voice_meter_rings.j2c",
        "voice_meter_rings.j2c",
        "voice_meter_rings.j2c",
        "voice_meter_rings.j2c"
    };

    for (int i=0; i<NUM_VOICE_SYMBOL_WAVES; i++)
    {
        mSoundSymbol.mWaveFadeOutStartTime  [i] = mCurrentTime;
        mSoundSymbol.mTexture               [i] = LLViewerTextureManager::getFetchedTextureFromFile(sound_level_img[i], FTT_LOCAL_FILE, false, LLGLTexture::BOOST_UI);
        mSoundSymbol.mWaveActive            [i] = false;
        mSoundSymbol.mWaveOpacity           [i] = 1.0f;
        mSoundSymbol.mWaveExpansion         [i] = 1.0f;
    }

    mSoundSymbol.mTexture[0]->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC);

    // The first instance loads the initial state from prefs.
    if (!sPrefsInitialized)
    {
        setPreferences();

        // Set up our listener to get updates on all prefs values we care about.
        gSavedSettings.getControl("LipSyncEnabled")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));
        gSavedSettings.getControl("LipSyncOohAahRate")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));
        gSavedSettings.getControl("LipSyncOoh")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));
        gSavedSettings.getControl("LipSyncAah")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));
        gSavedSettings.getControl("LipSyncOohPowerTransfer")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));
        gSavedSettings.getControl("LipSyncAahPowerTransfer")->getSignal()->connect(boost::bind(&LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged, _2));

        sPrefsInitialized = true;
    }

}//---------------------------------------------------

//---------------------------------------------------
void LLVoiceVisualizer::setMinGesticulationAmplitude( F32 m )
{
    mMinGesticulationAmplitude = m;

}//---------------------------------------------------

//---------------------------------------------------
void LLVoiceVisualizer::setMaxGesticulationAmplitude( F32 m )
{
    mMaxGesticulationAmplitude = m;

}//---------------------------------------------------

//---------------------------------------------------
void LLVoiceVisualizer::setVoiceEnabled( bool v )
{
    mVoiceEnabled = v;

}//---------------------------------------------------

//---------------------------------------------------
void LLVoiceVisualizer::setStartSpeaking()
{
    mStartTime              = mTimer.getTotalSeconds();
    mCurrentlySpeaking      = true;
    mSoundSymbol.mActive    = true;

}//---------------------------------------------------


//---------------------------------------------------
bool LLVoiceVisualizer::getCurrentlySpeaking()
{
    return mCurrentlySpeaking;

}//---------------------------------------------------


//---------------------------------------------------
void LLVoiceVisualizer::setStopSpeaking()
{
    mCurrentlySpeaking = false;
    mSpeakingAmplitude = 0.0f;

}//---------------------------------------------------


//---------------------------------------------------
void LLVoiceVisualizer::setSpeakingAmplitude( F32 a )
{
    mSpeakingAmplitude = a;

}//---------------------------------------------------

//------------------------------------------------------------------
// handles parameter updates
//------------------------------------------------------------------
bool LLVoiceVisualizer::handleVoiceVisualizerPrefsChanged(const LLSD& newvalue)
{
    // Note: Ignore the specific event value, we look up the ones we want
    LLVoiceVisualizer::setPreferences();
    return true;
}

//---------------------------------------------------
void LLVoiceVisualizer::setPreferences( )
{
    sLipSyncEnabled = gSavedSettings.getBOOL("LipSyncEnabled");
    sOohAahRate     = gSavedSettings.getF32("LipSyncOohAahRate");

    std::string oohString = gSavedSettings.getString("LipSyncOoh");
    lipStringToF32s (oohString, sOoh, sOohs);

    std::string aahString = gSavedSettings.getString("LipSyncAah");
    lipStringToF32s (aahString, sAah, sAahs);

    std::string oohPowerString = gSavedSettings.getString("LipSyncOohPowerTransfer");
    lipStringToF32s (oohPowerString, sOohPowerTransfer, sOohPowerTransfers);
    sOohPowerTransfersf = (F32) sOohPowerTransfers;

    std::string aahPowerString = gSavedSettings.getString("LipSyncAahPowerTransfer");
    lipStringToF32s (aahPowerString, sAahPowerTransfer, sAahPowerTransfers);
    sAahPowerTransfersf = (F32) sAahPowerTransfers;

}//---------------------------------------------------


//---------------------------------------------------
// convert a string of digits to an array of floats.
// the result for each digit is the value of the
// digit multiplied by 0.11
//---------------------------------------------------
void LLVoiceVisualizer::lipStringToF32s ( std::string& in_string, F32*& out_F32s, U32& count_F32s )
{
    delete[] out_F32s;  // get rid of the current array

    count_F32s = static_cast<U32>(in_string.length());
    if (count_F32s == 0)
    {
        // we don't like zero length arrays

        count_F32s  = 1;
        out_F32s       = new F32[1];
        out_F32s[0] = 0.0f;
    }
    else
    {
        out_F32s = new F32[count_F32s];

        for (U32 i=0; i<count_F32s; i++)
        {
            // we convert the characters 0 to 9 to their numeric value
            // anything else we take the low order four bits with a ceiling of 9

            U8 digit = in_string[i];
            U8 four_bits = digit % 16;
            if (four_bits > 9)
            {
                four_bits = 9;
            }
            out_F32s[i] = 0.11f * (F32) four_bits;
        }
    }

}//---------------------------------------------------


//--------------------------------------------------------------------------
// find the amount to blend the ooh and aah mouth morphs
//--------------------------------------------------------------------------
void LLVoiceVisualizer::lipSyncOohAah( F32& ooh, F32& aah )
{
    if (sLipSyncEnabled && mCurrentlySpeaking)
    {
        U32 transfer_index = (U32) (sOohPowerTransfersf * mSpeakingAmplitude);
        if (transfer_index >= sOohPowerTransfers)
        {
           transfer_index = sOohPowerTransfers - 1;
        }
        F32 transfer_ooh = sOohPowerTransfer[transfer_index];

        transfer_index = (U32) (sAahPowerTransfersf * mSpeakingAmplitude);
        if (transfer_index >= sAahPowerTransfers)
        {
           transfer_index = sAahPowerTransfers - 1;
        }
        F32 transfer_aah = sAahPowerTransfer[transfer_index];

        F64 current_time   = mTimer.getTotalSeconds();
        F64 elapsed_time   = current_time - mStartTime;
        U32 elapsed_frames = (U32) (elapsed_time * sOohAahRate);
        U32 elapsed_oohs   = elapsed_frames % sOohs;
        U32 elapsed_aahs   = elapsed_frames % sAahs;

        ooh = transfer_ooh * sOoh[elapsed_oohs];
        aah = transfer_aah * sAah[elapsed_aahs];

        /*
        LL_INFOS() << " elapsed frames " << elapsed_frames
                << " ooh "            << ooh
                << " aah "            << aah
                << " transfer ooh"    << transfer_ooh
                << " transfer aah"    << transfer_aah
                << " start time "     << mStartTime
                << " current time "   << current_time
                << " elapsed time "   << elapsed_time
                << " elapsed oohs "   << elapsed_oohs
                << " elapsed aahs "   << elapsed_aahs
                << LL_ENDL;
        */
    }
    else
    {
        ooh = 0.0f;
        aah = 0.0f;
    }

}//---------------------------------------------------


//---------------------------------------------------
// this method is inherited from HUD Effect
//---------------------------------------------------
void LLVoiceVisualizer::render()
{
    static LLCachedControl<bool> show_visualizer(gSavedSettings, "VoiceVisualizerEnabled", true);
    if (!mVoiceEnabled || !show_visualizer)
    {
        return;
    }

    LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;

    if ( mSoundSymbol.mActive )
    {
        mPreviousTime = mCurrentTime;
        mCurrentTime = mTimer.getTotalSeconds();

        //---------------------------------------------------------------
        // set the sound symbol position over the source (avatar's head)
        //---------------------------------------------------------------
        mSoundSymbol.mPosition = gAgent.getPosAgentFromGlobal(mPositionGlobal) + WORLD_UPWARD_DIRECTION * HEIGHT_ABOVE_HEAD;

        //---------------------------------------------------------------
        // some gl state
        //---------------------------------------------------------------
        LLGLSPipelineAlpha alpha_blend;
        LLGLDepthTest depth(GL_TRUE, GL_FALSE);
        //LLGLDisable gls_stencil(GL_STENCIL_TEST);

        //-------------------------------------------------------------
        // create coordinates of the geometry for the dot
        //-------------------------------------------------------------
        LLViewerCamera* camera = LLViewerCamera::getInstance();
        LLVector3 l = camera->getLeftAxis() * DOT_SIZE;
        LLVector3 u = camera->getUpAxis()   * DOT_SIZE;

        LLVector3 bottomLeft    = mSoundSymbol.mPosition + l - u;
        LLVector3 bottomRight   = mSoundSymbol.mPosition - l - u;
        LLVector3 topLeft       = mSoundSymbol.mPosition + l + u;
        LLVector3 topRight      = mSoundSymbol.mPosition - l + u;

        //-----------------------------
        // bind texture 0 (the dot)
        //-----------------------------
        gGL.getTexUnit(0)->bind(mSoundSymbol.mTexture[0]);

        //-------------------------------------------------------------
        // now render the dot
        //-------------------------------------------------------------
        gGL.color4fv( LLColor4( 1.0f, 1.0f, 1.0f, DOT_OPACITY ).mV );

        gGL.begin( LLRender::TRIANGLE_STRIP );
            gGL.texCoord2i( 0,  0   ); gGL.vertex3fv( bottomLeft.mV );
            gGL.texCoord2i( 1,  0   ); gGL.vertex3fv( bottomRight.mV );
            gGL.texCoord2i( 0,  1   ); gGL.vertex3fv( topLeft.mV );
        gGL.end();

        gGL.begin( LLRender::TRIANGLE_STRIP );
            gGL.texCoord2i( 1,  0   ); gGL.vertex3fv( bottomRight.mV );
            gGL.texCoord2i( 1,  1   ); gGL.vertex3fv( topRight.mV );
            gGL.texCoord2i( 0,  1   ); gGL.vertex3fv( topLeft.mV );
        gGL.end();



        //--------------------------------------------------------------------------------------
        // if currently speaking, trigger waves (1 through 6) based on speaking amplitude
        //--------------------------------------------------------------------------------------
        if ( mCurrentlySpeaking )
        {
            F32 min = 0.2f;
            F32 max = 0.7f;
            F32 fraction = ( mSpeakingAmplitude - min ) / ( max - min );

            // in case mSpeakingAmplitude > max....
            if ( fraction > 1.0f )
            {
                fraction = 1.0f;
            }

            S32 level = 1 + (int)( fraction * ( NUM_VOICE_SYMBOL_WAVES - 2 ) );

            for (int i=0; i<level+1; i++)
            {
                mSoundSymbol.mWaveActive            [i] = true;
                mSoundSymbol.mWaveOpacity           [i] = 1.0f;
                mSoundSymbol.mWaveFadeOutStartTime  [i] = mCurrentTime;
            }

        } // if currently speaking

        //---------------------------------------------------
        // determine color
        //---------------------------------------------------
        F32 red     = 0.0f;
        F32 green   = 0.0f;
        F32 blue    = 0.0f;
        if ( mSpeakingAmplitude < RED_THRESHOLD )
        {
            if ( mSpeakingAmplitude < GREEN_THRESHOLD )
            {
                red     = BASE_BRIGHTNESS;
                green   = BASE_BRIGHTNESS;
                blue    = BASE_BRIGHTNESS;
            }
            else
            {
                //---------------------------------------------------
                // fade from gray to bright green
                //---------------------------------------------------
                F32 fraction = ( mSpeakingAmplitude - GREEN_THRESHOLD ) / ( 1.0f - GREEN_THRESHOLD );
                red     = BASE_BRIGHTNESS - ( fraction * BASE_BRIGHTNESS );
                green   = BASE_BRIGHTNESS +   fraction * ( 1.0f - BASE_BRIGHTNESS );
                blue    = BASE_BRIGHTNESS - ( fraction * BASE_BRIGHTNESS );
            }
        }
        else
        {
            //---------------------------------------------------
            // redish
            //---------------------------------------------------
            red     = 1.0f;
            green   = 0.2f;
            blue    = 0.2f;
        }

        for (int i=0; i<NUM_VOICE_SYMBOL_WAVES; i++)
        {
            if ( mSoundSymbol.mWaveActive[i] )
            {
                F32 fadeOutFraction = (F32)( mCurrentTime - mSoundSymbol.mWaveFadeOutStartTime[i] ) / FADE_OUT_DURATION;

                mSoundSymbol.mWaveOpacity[i] = 1.0f - fadeOutFraction;

                if ( mSoundSymbol.mWaveOpacity[i] < 0.0f )
                {
                    mSoundSymbol.mWaveFadeOutStartTime  [i] = mCurrentTime;
                    mSoundSymbol.mWaveOpacity           [i] = 0.0f;
                    mSoundSymbol.mWaveActive            [i] = false;
                }

                //----------------------------------------------------------------------------------
                // This is where we calculate the expansion of the waves - that is, the
                // rate at which they are scaled greater than 1.0 so that they grow over time.
                //----------------------------------------------------------------------------------
                F32 timeSlice = (F32)( mCurrentTime - mPreviousTime );
                F32 waveSpeed = mSpeakingAmplitude * WAVE_MOTION_RATE;
                mSoundSymbol.mWaveExpansion[i] *= ( 1.0f + EXPANSION_RATE * timeSlice * waveSpeed );

                if ( mSoundSymbol.mWaveExpansion[i] > EXPANSION_MAX )
                {
                    mSoundSymbol.mWaveExpansion[i] = 1.0f;
                }

                //----------------------------------------------------------------------------------
                // create geometry for the wave billboard textures
                //----------------------------------------------------------------------------------
                F32 width   = i * WAVE_WIDTH_SCALE  * mSoundSymbol.mWaveExpansion[i];
                F32 height  = i * WAVE_HEIGHT_SCALE * mSoundSymbol.mWaveExpansion[i];

                LLVector3 l = camera->getLeftAxis() * width;
                LLVector3 u = camera->getUpAxis()   * height;

                LLVector3 bottomLeft    = mSoundSymbol.mPosition + l - u;
                LLVector3 bottomRight   = mSoundSymbol.mPosition - l - u;
                LLVector3 topLeft       = mSoundSymbol.mPosition + l + u;
                LLVector3 topRight      = mSoundSymbol.mPosition - l + u;

                gGL.color4fv( LLColor4( red, green, blue, mSoundSymbol.mWaveOpacity[i] ).mV );
                gGL.getTexUnit(0)->bind(mSoundSymbol.mTexture[i]);


                //---------------------------------------------------
                // now, render the mofo
                //---------------------------------------------------
                gGL.begin( LLRender::TRIANGLE_STRIP );
                    gGL.texCoord2i( 0, 0 ); gGL.vertex3fv( bottomLeft.mV );
                    gGL.texCoord2i( 1, 0 ); gGL.vertex3fv( bottomRight.mV );
                    gGL.texCoord2i( 0, 1 ); gGL.vertex3fv( topLeft.mV );
                gGL.end();

                gGL.begin( LLRender::TRIANGLE_STRIP );
                    gGL.texCoord2i( 1, 0 ); gGL.vertex3fv( bottomRight.mV );
                    gGL.texCoord2i( 1, 1 ); gGL.vertex3fv( topRight.mV );
                    gGL.texCoord2i( 0, 1 ); gGL.vertex3fv( topLeft.mV );
                gGL.end();

            } //if ( mSoundSymbol.mWaveActive[i] )

        }// for loop

    }//if ( mSoundSymbol.mActive )

}//---------------------------------------------------

//---------------------------------------------------
void LLVoiceVisualizer::setVoiceSourceWorldPosition( const LLVector3 &p )
{
    mVoiceSourceWorldPosition   = p;

}//---------------------------------------------------

//---------------------------------------------------
VoiceGesticulationLevel LLVoiceVisualizer::getCurrentGesticulationLevel()
{
    VoiceGesticulationLevel gesticulationLevel = VOICE_GESTICULATION_LEVEL_OFF; //default

    //-----------------------------------------------------------------------------------------
    // Within the range of gesticulation amplitudes, the sound signal is split into
    // three equal amplitude regimes, each specifying one of three gesticulation levels.
    //-----------------------------------------------------------------------------------------
    F32 range = mMaxGesticulationAmplitude - mMinGesticulationAmplitude;

            if ( mSpeakingAmplitude > mMinGesticulationAmplitude + range * 0.5f )   { gesticulationLevel = VOICE_GESTICULATION_LEVEL_HIGH;      }
    else    if ( mSpeakingAmplitude > mMinGesticulationAmplitude + range * 0.25f    )   { gesticulationLevel = VOICE_GESTICULATION_LEVEL_MEDIUM;    }
    else    if ( mSpeakingAmplitude > mMinGesticulationAmplitude + range * 0.00000f )   { gesticulationLevel = VOICE_GESTICULATION_LEVEL_LOW;       }

    return gesticulationLevel;

}//---------------------------------------------------



//------------------------------------
// Destructor
//------------------------------------
LLVoiceVisualizer::~LLVoiceVisualizer()
{
}//----------------------------------------------


//---------------------------------------------------
// "packData" is inherited from HUDEffect
//---------------------------------------------------
void LLVoiceVisualizer::packData(LLMessageSystem *mesgsys)
{
    // Pack the default data
    LLHUDEffect::packData(mesgsys);

    // TODO -- pack the relevant data for voice effects
    // we'll come up with some cool configurations....TBD
    //U8 packed_data[41];
    //mesgsys->addBinaryDataFast(_PREHASH_TypeData, packed_data, 41);
    U8 packed_data = 0;
    mesgsys->addBinaryDataFast(_PREHASH_TypeData, &packed_data, 1);
}


//---------------------------------------------------
// "unpackData" is inherited from HUDEffect
//---------------------------------------------------
void LLVoiceVisualizer::unpackData(LLMessageSystem *mesgsys, S32 blocknum)
{
    // TODO -- find the speaker, unpack binary data, set the properties of this effect
    /*
    LLHUDEffect::unpackData(mesgsys, blocknum);
    LLUUID source_id;
    LLUUID target_id;
    S32 size = mesgsys->getSizeFast(_PREHASH_Effect, blocknum, _PREHASH_TypeData);
    if (size != 1)
    {
        LL_WARNS() << "Voice effect with bad size " << size << LL_ENDL;
        return;
    }
    mesgsys->getBinaryDataFast(_PREHASH_Effect, _PREHASH_TypeData, packed_data, 1, blocknum);
    */
}


//------------------------------------------------------------------
// this method is inherited from HUD Effect
//------------------------------------------------------------------
void LLVoiceVisualizer::markDead()
{
    mCurrentlySpeaking      = false;
    mVoiceEnabled           = false;
    mSoundSymbol.mActive    = false;

    LLHUDEffect::markDead();
}//------------------------------------------------------------------