/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     snd_Sound3DEngine.cpp
  
  Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc.  All rights reserved.
  
  These coded instructions, statements, and computer programs contain proprietary
  information of Nintendo and/or its licensed developers and are protected by
  national and international copyright laws. They may not be disclosed to third
  parties or copied or duplicated in any form, in whole or in part, without the
  prior written consent of Nintendo.
  
  The content herein is highly confidential and should be handled accordingly.
  
  $Revision: $
 *---------------------------------------------------------------------------*/

#include "precompiled.h"

#include <nw/snd/snd_Sound3DEngine.h>

#include <nw/snd/snd_BasicSound.h>      // nw::snd::SoundAmbientParam

namespace nw {
namespace snd {

/*---------------------------------------------------------------------------*
  Name:         Sound3DEngine

  Description:  コンストラクタ

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
Sound3DEngine::Sound3DEngine()
{
}

void Sound3DEngine::UpdateAmbientParam(
    const Sound3DManager* sound3DManager,
    const Sound3DParam* sound3DParam,
    u32 soundId,
    u32 updateFlag,
    SoundAmbientParam* ambientParam
)
{
    NW_NULL_ASSERT( sound3DManager );
    NW_NULL_ASSERT( sound3DParam );
    NW_NULL_ASSERT( ambientParam );

    (void)soundId;

    const Sound3DManager::ListenerList& listenerList = sound3DManager->GetListenerList();

    // 更新する場合は、最低値で初期化
    if ( updateFlag & UPDATE_VOLUME )
    {
        ambientParam->volume = 0.0f;
    }
    if ( updateFlag & UPDATE_PRIORITY )
    {
        ambientParam->priority = - sound3DManager->GetMaxPriorityReduction();
    }
    if ( updateFlag & UPDATE_FILTER )
    {
        ambientParam->biquadFilterValue = 1.0f; // biquad filter 値は最大値で初期化
    }

    // マルチリスナー場合、パン・ピッチ計算を行わない
    if ( listenerList.GetSize() > 1 )
    {
        updateFlag &= ~UPDATE_PAN;
        updateFlag &= ~UPDATE_SPAN;
        updateFlag &= ~UPDATE_PITCH;
    }
    
    for( Sound3DManager::ListenerList::ConstIterator itr = listenerList.GetBeginIter() ;
         itr != listenerList.GetEndIter() ; itr++ )
    {
        const Sound3DListener& listener = *itr;

        //------------------------------------------------------------------
        // 音量/プライオリティ計算
        if ( updateFlag & ( UPDATE_VOLUME | UPDATE_PRIORITY ) )
        {
            f32 volume;
            int priority;
            Sound3DCalculator::CalcVolumeAndPriority(
                *sound3DManager,
                listener,
                *sound3DParam,
                &volume,
                &priority
            );

            if ( updateFlag & UPDATE_VOLUME )
            {
                ambientParam->volume = ut::Max( volume, ambientParam->volume );
            }
            if ( updateFlag & UPDATE_PRIORITY )
            {
                ambientParam->priority = ut::Max( priority, ambientParam->priority );
            }
        }

        //------------------------------------------------------------------
        // パン/サラウンドパン計算
        if ( updateFlag & ( UPDATE_PAN | UPDATE_SPAN ))
        {
            f32 pan;
            f32 span;

            Sound3DCalculator::CalcPan(
                *sound3DManager,
                listener,
                *sound3DParam,
                m_CalcPanParam,
                &pan,
                &span
            );

            if ( updateFlag & UPDATE_PAN )
            {
                ambientParam->pan = pan;
            }
            if ( updateFlag & UPDATE_SPAN )
            {
                ambientParam->span = span;
            }
        }

        //------------------------------------------------------------------
        // ピッチ計算
        if ( updateFlag & UPDATE_PITCH )
        {
            float pitch;

            Sound3DCalculator::CalcPitch(
                *sound3DManager,
                listener,
                *sound3DParam,
                &pitch
            );

            ambientParam->pitch = pitch;
        }

        //------------------------------------------------------------------
        // Biquadフィルタ計算
        if ( updateFlag & UPDATE_FILTER )
        {
            float biquadFilterValue;

            Sound3DCalculator::CalcBiquadFilterValue(
                *sound3DManager,
                listener,
                *sound3DParam,
                &biquadFilterValue
            );

            ambientParam->biquadFilterType = sound3DManager->GetBiquadFilterType();
            ambientParam->biquadFilterValue = ut::Min( biquadFilterValue, ambientParam->biquadFilterValue );
        }
    }
}

void Sound3DEngine::UpdateAmbientParam(
    const Sound3DManager* sound3DManager,
    const Sound3DParam* sound3DParam,
    u32 soundId,
    SoundAmbientParam* ambientParam
)
{
    NW_NULL_ASSERT( sound3DManager );
    NW_NULL_ASSERT( sound3DParam );
    NW_NULL_ASSERT( ambientParam );

    u32 updateFlag = 0;
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_VOLUME )
    {
        updateFlag |= UPDATE_VOLUME;
    }
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_PRIORITY )
    {
        updateFlag |= UPDATE_PRIORITY;
    }
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_PAN )
    {
        updateFlag |= UPDATE_PAN;
    }
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_SPAN )
    {
        updateFlag |= UPDATE_SPAN;
    }
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_FILTER )
    {
        updateFlag |= UPDATE_FILTER;
    }
    if ( sound3DParam->dopplerFactor > 0 )
    {
        updateFlag |= UPDATE_PITCH;
    }

    UpdateAmbientParam(
        sound3DManager,
        sound3DParam,
        soundId,
        updateFlag,
        ambientParam
    );
}

int Sound3DEngine::GetAmbientPriority(
    const Sound3DManager* sound3DManager,
    const Sound3DParam* sound3DParam,
    u32 soundId
)
{
    NW_NULL_ASSERT( sound3DManager );
    NW_NULL_ASSERT( sound3DParam );

    u32 updateFlag = UPDATE_START_PRIORITY ;
    if ( sound3DParam->ctrlFlag & SoundArchive::Sound3DInfo::FLAG_CTRL_PRIORITY )
    {
        updateFlag |= UPDATE_PRIORITY;
    }

    SoundAmbientParam ambientParam;
    UpdateAmbientParam(
        sound3DManager,
        sound3DParam,
        soundId,
        updateFlag,
        &ambientParam
    );

    return ambientParam.priority;
}

} // namespace nw::snd
} // namespace nw