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