/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     dev_CallbackChain.cpp

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  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.

  $Revision: 14250 $
 *---------------------------------------------------------------------------*/

#include <nw/dev/dev_CallbackChain.h>

#if defined(NW_DEV_ENABLED) && defined(NW_PLATFORM_CTR)
#include <nn/os/os_Tick.h>
#endif

namespace nw
{
namespace dev
{

#if defined(NW_DEV_ENABLED) && defined(NW_PLATFORM_CTR)

CallbackChain* CallbackChain::s_CallbackChain = NULL;

//! @brief コンストラクタです。
CallbackChain::CallbackChain( nw::os::IAllocator* allocator )
: m_Cost( 0.f ),
m_StartReqCount( 0 ),
m_EndReqCount( 0 ),
m_CurrentReqCount( 0 ),
m_MicroSecArray( NULL ),
m_Allocator( allocator )
{
    NW_ASSERT( !s_CallbackChain );
    NW_NULL_ASSERT( m_Allocator );

    GLint maxRequestCount = 0;

    s_CallbackChain = this;

    nngxGetCmdlistParameteri(NN_GX_CMDLIST_MAX_REQCOUNT, &maxRequestCount);
    m_MaxRequestCount = maxRequestCount;

    m_MicroSecArray = static_cast<s64*>( m_Allocator->Alloc( sizeof(s64) * m_MaxRequestCount ) );
    NW_NULL_ASSERT( m_MicroSecArray );
}


//! @brief デストラクタです。
CallbackChain::~CallbackChain()
{
    m_Allocator->Free( m_MicroSecArray );
    s_CallbackChain = NULL;

    nngxSetCmdlistCallback(NULL);
}


//! @brief インスタンスを破棄します。
void
CallbackChain::Destroy()
{
    if (m_Allocator != NULL)
    {
        void* memory = reinterpret_cast<void*>(this);
        this->~CallbackChain();
        m_Allocator->Free(memory);
    }
}

//! @brief バインドされているコマンドリストにコールバックを設定します。
void
CallbackChain::SetCallback()
{
    nngxStopCmdlist();
    nngxSetCmdlistCallback(CallbackChain::CommandListCallback);
    nngxRunCmdlist();
}

//! @brief コールバックチェイン処理を開始します。
void 
CallbackChain::Begin()
{
    int i = 0;
    s64 costMicro = 0;
    GLint requestCount = 0;

    for ( i = m_StartReqCount; i < m_EndReqCount; ++i )
    {
        if ( m_MicroSecArray[i+1] != 0 && m_MicroSecArray[i] != 0 )
        {
            costMicro += m_MicroSecArray[i+1] - m_MicroSecArray[i];
        }
    }

    m_Cost = static_cast<f32>(costMicro) / 1000.f;

    for ( i = 0; i<m_MaxRequestCount; ++i ) { m_MicroSecArray[i] = 0; }

    nngxGetCmdlistParameteri(NN_GX_CMDLIST_USED_REQCOUNT, &requestCount);

    m_StartReqCount     = requestCount + 1;
    m_CurrentReqCount   = m_StartReqCount;
    m_EndReqCount       = 0;

    nngxEnableCmdlistCallback( m_CurrentReqCount );
    nngxSplitDrawCmdlist();

    NW_GL_ASSERT();
}


//! @brief コールバックチェイン処理を終了します。
void CallbackChain::End()
{
    GLint requestCount = 0;
    nngxGetCmdlistParameteri(NN_GX_CMDLIST_USED_REQCOUNT, &requestCount);
    m_EndReqCount = requestCount + 1;
    nngxSplitDrawCmdlist();

    NW_GL_ASSERT();
}


//! @brief コールバックの呼び出しです。
void 
CallbackChain::Invoke(GLint id)
{
    NW_UNUSED_VARIABLE(id);

    m_MicroSecArray[m_CurrentReqCount] = nn::os::Tick::GetSystemCurrent().ToTimeSpan().GetMicroSeconds();

    m_CurrentReqCount++;
    nngxEnableCmdlistCallback(m_CurrentReqCount);

    NW_GL_ASSERT();    
}


//! @brief 登録されるコールバック関数です。
void
CallbackChain::CommandListCallback(GLint id)
{
    if ( s_CallbackChain )
    {
        s_CallbackChain->Invoke(id);
    }
}

#endif // defined(NW_DEV_ENABLED) && defined(NW_PLATFORM_CTR)

} // namespace nw::dev
} // namespace nw