| // IStream.h |
| |
| #ifndef __ISTREAM_H |
| #define __ISTREAM_H |
| |
| #include "../Common/MyUnknown.h" |
| #include "../Common/Types.h" |
| |
| // "23170F69-40C1-278A-0000-000300xx0000" |
| |
| #define STREAM_INTERFACE_SUB(i, b, x) \ |
| DEFINE_GUID(IID_ ## i, \ |
| 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, x, 0x00, 0x00); \ |
| struct i: public b |
| |
| #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 |