isle-portable/LEGO1/mxdsfile.h

#ifndef MXDSFILE_H
#define MXDSFILE_H

#include "mxdssource.h"
#include "mxioinfo.h"
#include "mxstring.h"

// VTABLE 0x100dc890
class MxDSFile : public MxDSSource
{
public:
  __declspec(dllexport) MxDSFile(const char *filename, unsigned long skipReadingChunks);
  __declspec(dllexport) virtual ~MxDSFile(); // vtable+0x0

  // OFFSET: LEGO1 0x100c0120
  inline virtual const char *ClassName() const override // vtable+0x0c
  {
    // 0x10102594
    return "MxDSFile";
  }

  // OFFSET: LEGO1 0x100c0130
  inline virtual MxBool IsA(const char *name) const override // vtable+0x10
  {
    return !strcmp(name, MxDSFile::ClassName()) || MxDSSource::IsA(name);
  }

  __declspec(dllexport) virtual long Open(unsigned long); // vtable+0x14
  __declspec(dllexport) virtual long Close(); // vtable+0x18
  __declspec(dllexport) virtual long Read(unsigned char *,unsigned long); // vtable+0x20
  __declspec(dllexport) virtual long Seek(long,int); // vtable+0x24
  __declspec(dllexport) virtual unsigned long GetBufferSize(); // vtable+0x28
  __declspec(dllexport) virtual unsigned long GetStreamBuffersNum();  // vtable+0x2c
private:
  long ReadChunks();
  struct ChunkHeader {
    ChunkHeader()
      : majorVersion(0)
      , minorVersion(0)
      , bufferSize(0)
      , streamBuffersNum(0)
    {}

    unsigned short majorVersion;
    unsigned short minorVersion;
    unsigned long bufferSize;
    short streamBuffersNum;
    short reserved;
  };

  MxString m_filename;
  MXIOINFO m_io;
  ChunkHeader m_header;

  // If false, read chunks immediately on open, otherwise
  // skip reading chunks until ReadChunks is explicitly called.
  unsigned long m_skipReadingChunks;
};

#endif // MXDSFILE_H