block.hpp
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上传日期:2007-02-02
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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:
- block.hpp
- Abstract:
- Block base class
- Revision History:
- *************************************************************************/
- #ifndef __BLOCK_HPP_
- #define __BLOCK_HPP_
- Class CBlock
- {
- public:
- // Constructors
- virtual ~CBlock ();
- CBlock (
- const VOLMode& volmd,
- CMBMode* pmbmdFromMB, // (de)coding mode for the current block
- const CIntImage* pfiAlpha,
- const BlockNum thisBlockNum);
- // Attributes
- const CIntImage* textureQ () const {return m_pfiTextureQ;}// the texture (padded) data
- const Int* dctCoeffQ () const {return m_rgiDCTcoefQ;}// reconstructed DCT coefficients
- const Float* dctCoefRecon () const {return m_rgfltDCTcoefRecon;}// reconstructed DCT coefficients
- const CRct& where () const {return m_pfiAlpha -> where();}
- const CMBMode* pmbmd () const {return m_pmbmdFromMB;} //mode of curr mb
- // Operations
- ///////////////// implementation /////////////////
- protected:
- const VOLMode& m_volmd; // coding mode of vop
- CMBMode* m_pmbmdFromMB; // the coding mode information
- own CIntImage* m_pfiAlpha; // the alpha data (for padding)
- BlockNum m_blockNum;
- own CIntImage* m_pfiTextureQ; // quantized texture data (will be de-padded)
- own Int* m_rgiDCTcoefQ; // quantized DCT coefficients
- own Int* m_rgiDCTcoefQD; // quantized DCT coefficients, differentiated
- own Int* m_rgiDCTcoefQDZ; // quantized DCT coefficients, differentiated and zigzag scanned
- own Float* m_rgfltDCTcoefRecon; // reconstructed (de-quantized) DCT coefficients
- CIDCT* m_pidct;
- Void idct ();
- Void inverseQuantizeDCTcoef ();
- Void inverseQuantizeDCTcoefMPEG (); // mpeg2 method
- };
- #endif // __BLOCK_HPP_