isle/LEGO1/mxdssource.h
Mark Langen 51ec2c97c6
100% Match of MxDSFile (#51)
* 100% Match of MxDSFile

* ...almost, MxDSFile::Open is still not quite matching but all of the
  other methods are 100% matching.

* Turns out that most of the virtual methods and some of the members are
  actually on the MxDSSource base class, which I've pulled out as part
  of this.

* In order to implement the methods I added the MXIOINFO class, which
  seems to be a thin wrapper around the MMIOINFO windows structure. We
  can tell this because MMIOINFO::~MMIOINFO was included in the DLL
  exports, and calls down to a function which deconstructs something
  looking exactly like MMIOINFO.

* Add mxdssource.cpp

* mattkc feedback

* some accuracy improvements

* Use FOURCC macro

* Tirival solve in mxioinfo.cpp

* Update mxdsfile.cpp

0xFFFFFFFF -> -1

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>
2023-06-27 11:44:02 -07:00

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#ifndef MXDSSOURCE_H
#define MXDSSOURCE_H
#include "mxcore.h"
class MxDSSource : public MxCore
{
public:
MxDSSource()
: m_lengthInDWords(0)
, m_pBuffer(0)
, m_position(-1)
{}
virtual long Open(unsigned long) = 0;
virtual long Close() = 0;
virtual void SomethingWhichCallsRead(void* pUnknownObject);
virtual long Read(unsigned char *, unsigned long) = 0;
virtual long Seek(long, int) = 0;
virtual unsigned long GetBufferSize() = 0;
virtual unsigned long GetStreamBuffersNum() = 0;
virtual long GetLengthInDWords();
protected:
unsigned long m_lengthInDWords;
void* m_pBuffer;
long m_position;
};
#endif // MXDSSOURCE_H