vopmbdec.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:
- vopmbDec.hpp
- Abstract:
- Decoder for VOP composed of MB's
- Revision History:
- *************************************************************************/
- #ifndef __VOPMBDEC_HPP_
- #define __VOPMBDEC_HPP_
- Class CVOPofMBsDecoder : public CVOPofMBs
- {
- friend Class CShapeDecoder;
- public:
- // Constructors
- ~CVOPofMBsDecoder ();
- CVOPofMBsDecoder (
- Time tBCounter, // B-VOP counter
- VOLMode& volmd,
- VOPMode& vopmd,
- const CRct& rctVOP,
- const CIntImage* pfiRecA,
- const CVOPIntYUVBA* pvopfRefer0, // reference VOP in a previous time
- const CVOPIntYUVBA* pvopfRefer1, // reference VOP in a later time
- const CDirectModeData* pdrtmdRef1, // for B-VOP direct mode
- CInBitStream* pbitstrmIn, // bitstream
- CEntropyDecoderSet* pentrdecSet // huffman decoder set
- );
- // Operations
- Void decode ();
- ///////////////// implementation /////////////////
- private:
- CInBitStream* m_pbitstrmIn; // bitstream
- CEntropyDecoder* m_pentrdecMV; // huffman decoder for MV
- CEntropyDecoderSet* m_pentrdecSet; // huffman decoder set
- CShapeDecoder** m_ppshpdec; // shape decoders
- //motion dec funcs
- Void decodeMV (const UInt ix, const UInt iy);
- Int deScaleMV ( const Int iVLC, const UInt uiResidual,
- const UInt uiScaleFactor);
- CVector2D getDiffMV ();
- Void setForwardMVofDirect (
- CMacroBlock* pmbCurr,
- const CVector2D& vctMVdelta,
- const CVector2D& vctMVRef,
- const Double dblTimeScale,
- const BlockNum blkn
- );
- Void decodeMVforward (UInt ix, UInt iy);
- Void decodeMVbackward (UInt ix, UInt iy);
- Void decodeMVdirect (UInt ix, UInt iy);
- //motion dec funcs for the d*n sepr mode
- Void decodeMVD (const UInt ix, const UInt iy);
- Void forwardMVfromMVD (UInt ix, UInt iy);
- Void backwardMVfromMVD (UInt ix, UInt iy);
- Void mvFromMVD (const UInt ix, const UInt iy);
- Void decodeMVDforward (UInt ix, UInt iy);
- Void decodeMVDbackward (UInt ix, UInt iy);
- Void decodeNS ();
- Void decodeSI ();
- Void decodeSPB ();
- };
- #endif // __VOPMBDEC_HPP_