47 lines
919 B
C
47 lines
919 B
C
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#ifndef MEMORYFILE_H
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#define MEMORYFILE_H
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#define DEF_MEMORYFILEALLOC 512
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// memory based file access/buffer
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class CMemoryFile : public CBaseFile
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{
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public:
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CMemoryFile();
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virtual ~CMemoryFile();
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int Open(void *buf, size_t size, unsigned int mode);
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int Close();
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void Free();
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size_t Read(void *buf, size_t size);
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size_t Write(void *buf, size_t size);
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long Seek(long pos, int mode);
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long GetSize();
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long GetPosition();
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uint8_t *GetBuffer();
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protected:
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// memory type
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enum {
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mtAlloc,
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mtUser,
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mtLast
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};
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void Clear(int clbuf=1);
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void AllocBuffer(size_t maxsize);
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void FreeBuffer();
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protected:
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int filemt; // file memory type
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uint8_t *filebuf[mtLast]; // file buffer
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size_t filesize[mtLast]; // buffer size
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size_t filecount; // valid data count in buffer
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size_t filepos; // file position in buffer
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};
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typedef CMemoryFile *PCMEMORYFILE;
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#endif
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