entropy.hpp
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上传日期:2007-02-02
资源大小:6116k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*************************************************************************
- This software module was originally developed by
- Ming-Chieh Lee (mingcl@microsoft.com), Microsoft Corporation
- Wei-ge Chen (wchen@microsoft.com), Microsoft Corporation
- Bruce Lin (blin@microsoft.com), Microsoft Corporation
- Chuang Gu (chuanggu@microsoft.com), Microsoft Corporation
- (date: March, 1996)
- in the course of development of the MPEG-4 Video (ISO/IEC 14496-2).
- This software module is an implementation of a part of one or more MPEG-4 Video tools
- as specified by the MPEG-4 Video.
- ISO/IEC gives users of the MPEG-4 Video free license to this software module or modifications
- thereof for use in hardware or software products claiming conformance to the MPEG-4 Video.
- Those intending to use this software module in hardware or software products are advised that its use may infringe existing patents.
- The original developer of this software module and his/her company,
- the subsequent editors and their companies,
- and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation.
- Copyright is not released for non MPEG-4 Video conforming products.
- Microsoft retains full right to use the code for his/her own purpose,
- assign or donate the code to a third party and to inhibit third parties from using the code for non <MPEG standard> conforming products.
- This copyright notice must be included in all copies or derivative works.
- Copyright (c) 1996, 1997.
- Module Name:
- entropy.hpp
- Abstract:
- base classes for entropy encoder/decoder
- Revision History:
- *************************************************************************/
- #ifndef __ENTROPY_HPP_
- #define __ENTROPY_HPP_
- class istream;
- class ostream;
- class CInBitStream;
- class COutBitStream;
- typedef struct VlcTableTag {
- Int lSymbol;
- char *pchBits;
- } VlcTable;
- Class CEntropyEncoder
- {
- public:
- virtual ~CEntropyEncoder () {};
- virtual Void loadTable (istream &Table) = 0;
- virtual Void loadTable (VlcTable *pVlc) = 0;
- virtual Void attachStream (COutBitStream &BitStream) = 0;
- virtual UInt encodeSymbol (Int lSymbol, Char* rgchSymbolName = NULL, Bool bDontSendBits = FALSE) = 0;
- virtual COutBitStream* bitstream () = 0;
- };
- Class CEntropyDecoder
- {
- public:
- virtual ~CEntropyDecoder () {};
- virtual Void loadTable (istream &Table, Bool bIncompleteTree=TRUE) = 0;
- virtual Void loadTable (VlcTable *pVlc, Bool bIncompleteTree=TRUE) = 0;
- virtual Int decodeSymbol () = 0;
- virtual Void attachStream (CInBitStream &bitStream) = 0;
- virtual CInBitStream* bitstream () = 0;
- };
- #endif // __ENTROPY_HPP_