// IStream.h | |
#ifndef __ISTREAM_H | |
#define __ISTREAM_H | |
#include "../Common/MyUnknown.h" | |
#include "../Common/Types.h" | |
#include "IDecl.h" | |
#define STREAM_INTERFACE_SUB(i, base, x) DECL_INTERFACE_SUB(i, base, 3, x) | |
#define STREAM_INTERFACE(i, x) STREAM_INTERFACE_SUB(i, IUnknown, x) | |
STREAM_INTERFACE(ISequentialInStream, 0x01) | |
{ | |
STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize) PURE; | |
/* | |
Out: if size != 0, return_value = S_OK and (*processedSize == 0), | |
then there are no more bytes in stream. | |
if (size > 0) && there are bytes in stream, | |
this function must read at least 1 byte. | |
This function is allowed to read less than number of remaining bytes in stream. | |
You must call Read function in loop, if you need exact amount of data | |
*/ | |
}; | |
STREAM_INTERFACE(ISequentialOutStream, 0x02) | |
{ | |
STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE; | |
/* | |
if (size > 0) this function must write at least 1 byte. | |
This function is allowed to write less than "size". | |
You must call Write function in loop, if you need to write exact amount of data | |
*/ | |
}; | |
STREAM_INTERFACE_SUB(IInStream, ISequentialInStream, 0x03) | |
{ | |
STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE; | |
}; | |
STREAM_INTERFACE_SUB(IOutStream, ISequentialOutStream, 0x04) | |
{ | |
STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE; | |
STDMETHOD(SetSize)(UInt64 newSize) PURE; | |
}; | |
STREAM_INTERFACE(IStreamGetSize, 0x06) | |
{ | |
STDMETHOD(GetSize)(UInt64 *size) PURE; | |
}; | |
STREAM_INTERFACE(IOutStreamFlush, 0x07) | |
{ | |
STDMETHOD(Flush)() PURE; | |
}; | |
#endif |