/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     snd_StreamSoundFileReader.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: 31311 $
 *---------------------------------------------------------------------------*/

#include "precompiled.h"

#include <nw/snd/snd_StreamSoundFileReader.h>
#include <nw/snd/snd_WaveFile.h>                // EncodeMethod

namespace nw {
namespace snd {
namespace internal {

namespace {

const u32 SIGNATURE_FILE = NW_UT_MAKE_SIGWORD( 'C', 'S', 'T', 'M' );
const u32 SIGNATURE_INFO_BLOCK = NW_UT_MAKE_SIGWORD( 'I', 'N', 'F', 'O' );
const u32 SIGNATURE_SEEK_BLOCK = NW_UT_MAKE_SIGWORD( 'S', 'E', 'E', 'K' );
const u32 SIGNATURE_DATA_BLOCK = NW_UT_MAKE_SIGWORD( 'D', 'A', 'T', 'A' );

const int SUPPORTED_FILE_VERSION = 0x02000000;
const int CURRENT_FILE_VERSION = 0x02000000;

} // anonymous namespace

StreamSoundFileReader::StreamSoundFileReader()
: m_pHeader( NULL ),
  m_pInfoBlockBody( NULL )
{
}

void StreamSoundFileReader::Initialize( const void* streamSoundFile )
{
    NW_NULL_ASSERT( streamSoundFile );

    if ( ! IsValidFileHeader( streamSoundFile ) ) return;

    m_pHeader =
        reinterpret_cast<const StreamSoundFile::FileHeader*>( streamSoundFile );
    const StreamSoundFile::InfoBlock* infoBlock = m_pHeader->GetInfoBlock();
    NW_ASSERT( infoBlock->header.kind == SIGNATURE_INFO_BLOCK );

    m_pInfoBlockBody = &infoBlock->body;
    NW_ASSERT( m_pInfoBlockBody->GetStreamSoundInfo()->oneBlockBytes % 32 == 0 );
}

void StreamSoundFileReader::Finalize()
{
    m_pHeader = NULL;
    m_pInfoBlockBody = NULL;
}

bool StreamSoundFileReader::ReadStreamSoundInfo(
        StreamSoundFile::StreamSoundInfo* strmInfo ) const
{
    NW_NULL_ASSERT( m_pInfoBlockBody );
    const StreamSoundFile::StreamSoundInfo* info =
        m_pInfoBlockBody->GetStreamSoundInfo();

    NW_ALIGN32_ASSERT( info->oneBlockBytes );
    NW_ALIGN32_ASSERT( info->lastBlockPaddedBytes );

    // struct copy
    *strmInfo = *info;

    return true;
}

bool StreamSoundFileReader::ReadStreamTrackInfo(
        TrackInfo* pTrackInfo, int trackIndex ) const
{
    NW_NULL_ASSERT( m_pInfoBlockBody );
    NW_NULL_ASSERT( pTrackInfo );
    const StreamSoundFile::TrackInfoTable* table =
        m_pInfoBlockBody->GetTrackInfoTable();

    if ( trackIndex >= static_cast<int>( table->GetTrackCount() ) )
    {
        return false;
    }

    const StreamSoundFile::TrackInfo* src = table->GetTrackInfo( trackIndex );
    pTrackInfo->volume = src->volume;
    pTrackInfo->pan = src->pan;
    pTrackInfo->channelCount = static_cast<u8>( src->GetTrackChannelCount() ); // TODO: バイナリデータも 1 バイトでいいかも (NW4C-0.1.0)

    u32 count = ut::Min( static_cast<int>( pTrackInfo->channelCount ), WAVE_CHANNEL_MAX );
    for ( u32 i = 0; i < count; i++ )
    {
        pTrackInfo->globalChannelIndex[ i ] = src->GetGlobalChannelIndex( i );
    }

    return true;
}

bool StreamSoundFileReader::ReadDspAdpcmChannelInfo(
        DspAdpcmParam* pParam,
        DspAdpcmLoopParam* pLoopParam,
        int channelIndex ) const
{
    NW_NULL_ASSERT( m_pInfoBlockBody );
    NW_NULL_ASSERT( pParam );
    NW_NULL_ASSERT( pLoopParam );

    const StreamSoundFile::DspAdpcmChannelInfo* src =
        m_pInfoBlockBody->
        GetChannelInfoTable()->
        GetChannelInfo( channelIndex )->
        GetDspAdpcmChannelInfo();
    if ( src == NULL ) return false;

    *pParam = src->param;
    *pLoopParam = src->loopParam;
    return true;
}

bool StreamSoundFileReader::IsValidFileHeader( const void* streamSoundFile ) const
{
    NW_NULL_ASSERT( streamSoundFile );

    const ut::BinaryFileHeader& header =
        *reinterpret_cast<const ut::BinaryFileHeader*>( streamSoundFile );

    // シグニチャ確認
    NW_ASSERTMSG(
            header.signature == SIGNATURE_FILE,
            "invalid file signature. stream data is not available." );
    if ( header.signature != SIGNATURE_FILE ) return false;

    // バージョン確認
    NW_ASSERTMSG(
            header.version >= SUPPORTED_FILE_VERSION,
            "stream file is not supported version.\n"
            "please reconvert file using new version tools.\n"
            "(SUPPORTED_FILE_VERSION:0x%08x >= your version:0x%08x)\n",
            SUPPORTED_FILE_VERSION, header.version
    );
    if ( header.version < SUPPORTED_FILE_VERSION ) return false;
    NW_ASSERTMSG(
            header.version <= CURRENT_FILE_VERSION,
            "stream file is not supported version.\n"
            "please reconvert file using new version tools.\n"
            "(CURRENT_FILE_VERSION:0x%08x <= your version:0x%08x)\n",
            CURRENT_FILE_VERSION, header.version
    );
    if ( header.version > CURRENT_FILE_VERSION ) return false;

    return true;
}

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