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51ec2c97c6
* 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>
46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#ifndef MXDSFILE_H
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#define MXDSFILE_H
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#include "mxcore.h"
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#include "mxstring.h"
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#include "mxioinfo.h"
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#include "mxdssource.h"
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class MxDSFile : public MxDSSource
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{
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public:
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__declspec(dllexport) MxDSFile(const char *filename, unsigned long skipReadingChunks);
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__declspec(dllexport) virtual ~MxDSFile();
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__declspec(dllexport) virtual long Open(unsigned long);
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__declspec(dllexport) virtual long Close();
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__declspec(dllexport) virtual long Read(unsigned char *,unsigned long);
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__declspec(dllexport) virtual long Seek(long,int);
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__declspec(dllexport) virtual unsigned long GetBufferSize();
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__declspec(dllexport) virtual unsigned long GetStreamBuffersNum();
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private:
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long ReadChunks();
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struct ChunkHeader {
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ChunkHeader()
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: majorVersion(0)
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, minorVersion(0)
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, bufferSize(0)
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, streamBuffersNum(0)
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{}
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unsigned short majorVersion;
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unsigned short minorVersion;
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unsigned long bufferSize;
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short streamBuffersNum;
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short reserved;
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};
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MxString m_filename;
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MXIOINFO m_io;
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ChunkHeader m_header;
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// If false, read chunks immediately on open, otherwise
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// skip reading chunks until ReadChunks is explicitly called.
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unsigned long m_skipReadingChunks;
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};
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#endif // MXDSFILE_H
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