59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
// 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)(Int64 newSize) PURE;
|
|
};
|
|
|
|
STREAM_INTERFACE(IStreamGetSize, 0x06)
|
|
{
|
|
STDMETHOD(GetSize)(UInt64 *size) PURE;
|
|
};
|
|
|
|
STREAM_INTERFACE(IOutStreamFlush, 0x07)
|
|
{
|
|
STDMETHOD(Flush)() PURE;
|
|
};
|
|
|
|
#endif
|