--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/compressionlibs/ziplib/test/oldezlib/inc/OldEZCompressor.h Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,124 @@
+// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// EZLib: COMPRESSOR.H
+// Declaration for Compression class
+//
+//
+
+#ifndef __EZLIB_EZCOMPRESSOR_H__
+#define __EZLIB_EZCOMPRESSOR_H__
+
+#include <e32base.h>
+#include "OldEZstream.h"
+#include "OldEZBufman.h"
+
+/**
+The CEZCompressor class provides in-memory compression functions, including integrity checks of the uncompressed data.
+This version of the library supports only one compression method (deflation). Compression can be done in a single step
+(using CompressL()) if the buffers are large enough (for example if an input file is mmap'ed), or can be done by repeated calls
+of the DeflateL() function. The source data is compressed to the target buffer (both source and target contained within
+the buffer manager argument), and various other arguments distinguish the different compression settings.
+
+@publishedAll
+@released
+*/
+namespace TOLDEZLIB
+{
+
+class CEZCompressor : public CEZZStream
+ {
+public:
+ /** Compression strategy - used to tune the compression algorithm */
+ enum TStrategy
+ {
+ /** Use for normal data */
+ EDefaultStrategy = Z_DEFAULT_STRATEGY,
+
+ /** Force Huffman encoding only (no string match) */
+ EFiltered = Z_FILTERED,
+
+ /** Use for data produced by a filter (or predictor) */
+ EHuffmanOnly = Z_HUFFMAN_ONLY
+ };
+
+ /** Compression levels */
+ enum
+ {
+ EDefaultCompression = Z_DEFAULT_COMPRESSION,
+ ENoCompression = Z_NO_COMPRESSION,
+ EBestSpeed = Z_BEST_SPEED,
+ EBestCompression = Z_BEST_COMPRESSION
+ };
+
+ /** Window Bits - the base two logarithm of the window size (the size of the history buffer) */
+ enum
+ {
+ EMaxWBits = MAX_WBITS
+ };
+
+ /** Memory level - specifies how much memory should be allocated for the internal compression state */
+ enum
+ {
+ EDefMemLevel = MAX_MEM_LEVEL
+ };
+
+ /** Compression panic values */
+ enum
+ {
+ EDeflateInitlialiserError = EUnexpected + 1,
+ EDeflateTerminated
+ };
+
+ public:
+ ~CEZCompressor();
+
+ IMPORT_C static CEZCompressor* NewLC(MEZBufferManager& aInit, TInt aLevel = EDefaultCompression,
+ TInt aWindowBits = EMaxWBits, TInt aMemLevel = EDefMemLevel, TStrategy aStrategy = EDefaultStrategy);
+ IMPORT_C static CEZCompressor* NewL(MEZBufferManager& aInit, TInt aLevel = EDefaultCompression,
+ TInt aWindowBits = EMaxWBits, TInt aMemLevel = EDefMemLevel, TStrategy aStrategy = EDefaultStrategy);
+ IMPORT_C static CEZCompressor* NewLC(MEZBufferManager& aInit, const TDesC8 &aDictionary,
+ TInt aLevel = EDefaultCompression, TInt aWindowBits = EMaxWBits, TInt aMemLevel = EDefMemLevel,
+ TStrategy aStrategy = EDefaultStrategy);
+ IMPORT_C static CEZCompressor* NewL(MEZBufferManager& aInit, const TDesC8 &aDictionary,
+ TInt aLevel = EDefaultCompression, TInt aWindowBits = EMaxWBits, TInt aMemLevel = EDefMemLevel,
+ TStrategy aStrategy = EDefaultStrategy);
+
+ IMPORT_C void ResetL(MEZBufferManager& aInit);
+
+ IMPORT_C TBool DeflateL();
+
+ IMPORT_C static void CompressL(TDes8 &aDestination, const TDesC8 &aSource, TInt aLevel = EDefaultCompression);
+
+ private:
+ enum TDeflationState
+ {
+ ENoFlush,
+ EFinish,
+ EFinalize,
+ ETerminated
+ };
+
+ private:
+ CEZCompressor(MEZBufferManager* aInit);
+ void ConstructL(TInt aLevel, const TUint8* aDictionary, TInt aLength, TInt aWindowBits, TInt aMemLevel, TStrategy aStrategy);
+ void ConstructL(TInt aLevel, TInt aWindowBits, TInt aMemLevel, TStrategy aStrategy);
+
+ private:
+ MEZBufferManager* iBufferInit;
+ TDeflationState iDeflationState;
+ };
+} //namespace TOLDEZLIB
+#endif
+
+