XBMC4Xbox/xbmc/xbox/xbeheader.cpp

#include "system.h"
#include "AutoPtrHandle.h"
#include "xbeheader.h"
#include "Util.h"
#include "settings/GUISettings.h"

using namespace AUTOPTR;

CXBE::CXBE()
{
  // Assume 256K is enough for header information
  m_iHeaderSize = ( 256 * 1024 );
  m_pHeader = new char[ m_iHeaderSize ] ;

  m_iImageSize = ( 256 * 1024 );
  m_pImage = new char[m_iImageSize];

}
CXBE::~CXBE()
{
  if (m_pHeader) delete [] m_pHeader;

  m_pHeader = NULL;
  if (m_pImage) delete [] m_pImage;
  m_pImage = NULL;
}

bool CXBE::ExtractIcon(const CStdString& strFilename, const CStdString& strIcon)
{
  // Open the local file
  CAutoPtrHandle hFile( CreateFile( strFilename.c_str(),
                                    GENERIC_READ,
                                    0,
                                    NULL,
                                    OPEN_EXISTING,
                                    FILE_ATTRIBUTE_NORMAL,
                                    NULL ) );

  if (!hFile.isValid() ) return false;

  // Read the header
  DWORD dwRead;
  if ( !::ReadFile( (HANDLE)hFile,
                    m_pHeader,
                    std::min( m_iHeaderSize,
                         ( int )GetFileSize( (HANDLE)hFile, ( LPDWORD )NULL ) ),
                    &dwRead,
                    NULL ) )
  {
    return false;
  }

  // Header read. Copy information about header
  memcpy( &m_XBEInfo.Header, m_pHeader, sizeof( m_XBEInfo.Header ) );

  // Header read. Copy information about certificate
  int iNumSections;
  char * pszSectionName;

  // Assume 256K is enough for image information

  // Initialize
  iNumSections = m_XBEInfo.Header.sections;
  // Position at the first section
  m_XBEInfo.pSection_Header = ( _xbe_info_::section_header * )( m_pHeader + ( m_XBEInfo.Header.section_headers_addr -
                              m_XBEInfo.Header.base ) );

  // Sections read. Parse all the section headers
  while ( iNumSections-- > ( int )0 )
  {
    // Is this section an inserted file?
    if ( ( int )m_XBEInfo.pSection_Header->Flags.inserted_file == ( int )1 )
    {
      // Inserted file. Position at the name of the section
      pszSectionName = ( m_pHeader + ( m_XBEInfo.pSection_Header->section_name_addr -
                                       m_XBEInfo.Header.base ) );

      // Title image?
      if ( strcmp( pszSectionName, "$$XTIMAGE" ) == ( int )0 )
      {
        // Position at 'title image' in the XBE itself
        if ( SetFilePointer( (HANDLE)hFile,
                             m_XBEInfo.pSection_Header->raw_addr,
                             NULL,
                             FILE_BEGIN ) == ( DWORD )0xFFFFFFFF )
        {
          // Unable to set file position. Break out of loop
          return false;
        }

        // Read the image
        if ( ::ReadFile( (HANDLE)hFile,
                         m_pImage,
                         std::min( m_iImageSize,
                              ( int )m_XBEInfo.pSection_Header->sizeof_raw ),
                         &dwRead,
                         NULL ) == ( BOOL )FALSE )
        {
          // Image not read. Break out of loop
          return false;
        }

        // The m_pImage variable now contains the image data itself
        CAutoPtrHandle hIcon ( CreateFile( strIcon.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL ) );
        if (!hIcon.isValid() ) return false;

        DWORD dwWrote;
        WriteFile( (HANDLE)hIcon, m_pImage, dwRead, &dwWrote, NULL);
        return true;
      }
    }

    // Position at the next section
    m_XBEInfo.pSection_Header++;
  }
  return false;
}

// spiff
uint32 CXBE::ExtractGameRegion(const CStdString& strFilename)
{
  // Open the local file
  CAutoPtrHandle hFile( CreateFile( strFilename.c_str(),
    GENERIC_READ,
    0,
    NULL,
    OPEN_EXISTING,
    FILE_ATTRIBUTE_NORMAL,
    NULL ) );

  if (!hFile.isValid() ) return( 0 );

  // Read the header
  DWORD dwRead;
  if ( !::ReadFile( (HANDLE)hFile,
    m_pHeader,
    std::min( m_iHeaderSize,
    ( int )GetFileSize( (HANDLE)hFile, ( LPDWORD )NULL ) ),
    &dwRead,
    NULL ) )
  {
    return( 0 );
  }

  // Header read. Copy information about header
  memcpy( &m_XBEInfo.Header, m_pHeader, sizeof( m_XBEInfo.Header ) );

  if ( SetFilePointer( (HANDLE)hFile,
    m_XBEInfo.Header.certificate_addr-m_XBEInfo.Header.base,
    NULL,
    FILE_BEGIN ) == ( DWORD )0xFFFFFFFF )
  {
    return( 0 );
  }
  // re-read to be sure
  if ( !::ReadFile( (HANDLE)hFile,
    m_pHeader,
    sizeof(m_XBEInfo.Certificate),
    &dwRead,
    NULL ) )
  {
    return( 0 );
  }

  memcpy(&m_XBEInfo.Certificate,m_pHeader,sizeof(m_XBEInfo.Certificate));

  return( m_XBEInfo.Certificate.game_region );
}

int CXBE::FilterRegion(int iRegion, bool bForceAllModes)
{
  int iVideoMode, iPreferred;
#ifdef HAS_XBOX_D3D
  iVideoMode = iPreferred = XGetVideoStandard();
#else
  iVideoMode = iPreferred = 4; // PAL?
#endif
  if (iPreferred == 3)
    iPreferred = 4;
  int iNTSCMode = 0;
  if (!bForceAllModes)
    iNTSCMode = g_guiSettings.GetInt("myprograms.ntscmode");

  if (iRegion == 0)
    iRegion = iVideoMode;
  else if ((iRegion & 1  && iPreferred == 1) || (iRegion == 1))
  {
    if (iNTSCMode == 0 || iNTSCMode == 1)
      iRegion = VIDEO_NTSCM;
    else
      iRegion = iNTSCMode==2?VIDEO_NTSCJ:VIDEO_PAL60;
  }
  else if ((iRegion & 2  && iPreferred == 2) || (iRegion == 2))
  {
    if (iNTSCMode == 0 || iNTSCMode == 2)
      iRegion = VIDEO_NTSCJ;
    else
      iRegion = iNTSCMode==1?VIDEO_NTSCM:VIDEO_PAL60;
  }
  else if ((iRegion & 4  && iPreferred == 4) || (iRegion == 4)) // stored as 4 in the db (xbe values) but the actual video-mode is VIDEO_PAL50=3
    iRegion = VIDEO_PAL50;
  else if (iRegion == 8)
    iRegion = VIDEO_PAL60;
  else if (iRegion & 1)
  {
    if (iNTSCMode == 0 || iNTSCMode == 1)
      iRegion = VIDEO_NTSCM;
    else
      iRegion = iNTSCMode==2?VIDEO_NTSCJ:VIDEO_PAL60;
  }
  else if (iRegion & 4)
    iRegion = VIDEO_PAL50;
  else if (iRegion & 2)
  {
    if (iNTSCMode == 0 || iNTSCMode == 2)
      iRegion = VIDEO_NTSCJ;
    else
      iRegion = iNTSCMode==1?VIDEO_NTSCM:VIDEO_PAL60;
  }
  
  return iRegion;
}