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- /*
- File: Streams.h
-
- Contains: Utility routines to stream data into a block of memory
-
- Written by: Chris White
-
- Copyright: Copyright © 1995-1999 by Apple Computer, Inc., All Rights Reserved.
-
- You may incorporate this Apple sample source code into your program(s) without
- restriction. This Apple sample source code has been provided "AS IS" and the
- responsibility for its operation is yours. You are not permitted to redistribute
- this Apple sample source code as "Apple sample source code" after having made
- changes. If you're going to re-distribute the source, we require that you make
- it clear in the source that the code was descended from Apple sample source
- code, but that you've made changes.
-
- Change History (most recent first):
- 8/5/1999 Karl Groethe Updated for Metrowerks Codewarror Pro 2.1
-
-
- */
-
-
-
- #ifndef __STREAMS__
- #define __STREAMS__
-
-
-
- #ifndef __TYPES__
- #include <Types.h>
- #endif
-
- #ifndef __MEMORY__
- #include <Memory.h>
- #endif
-
-
-
-
-
- typedef struct StreamHeader
- {
- Size blockSize;
- Size currentSize;
- Size cursor;
- Size maxCursor;
-
- } tStreamHeader, *tStreamHeaderPtr;
-
-
-
- typedef Ptr tStreamRef;
- typedef UInt32 tStreamCursor;
-
-
-
- enum
- {
- kInvalidStreamRef = -1,
- kBoundsErr = -2
- };
-
-
-
- OSErr NewStream ( tStreamRef* streamRef, Size blockSize );
- OSErr DisposeStream ( tStreamRef streamRef );
- OSErr SetStreamData ( tStreamRef streamRef, Ptr dataPtr, Size dataSize );
- OSErr GetStreamData ( tStreamRef streamRef, Ptr dataPtr, Size dataSize );
- OSErr GetStreamDataPtr ( tStreamRef streamRef, Ptr* dataPtr );
- Size GetStreamDataSize ( tStreamRef streamRef );
- tStreamCursor GetStreamCursor ( tStreamRef streamRef );
- OSErr SetStreamCursor ( tStreamRef streamRef, tStreamCursor byteCount );
- void ResetStreamCursor ( tStreamRef streamRef );
- OSErr CompactStream ( tStreamRef streamRef );
-
-
-
-
-
-
-
-
-
- #endif // define __STREAMS__
-
-