mbdec.hpp
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:4k
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:
- MBDec.hpp
- Abstract:
- MacroBlock Decoder
- Revision History:
- *************************************************************************/
- #ifndef __MBDEC_HPP_
- #define __MBDEC_HPP_
- Class CMacroBlockDecoder : public CMacroBlock
- {
- friend class CVOPofMBsDecoder;
- public:
- // Constructors
- ~CMacroBlockDecoder ();
- CMacroBlockDecoder ( // decoder
- const CRct& rctVOP,
- const CIntImage* pfiRecA,
- UInt indexX, // indexX is the x indexTH macroblock of vopF
- UInt indexY, // indexY is the y indexTH macroblock of vopF
- const VOLMode& volmd,
- const VOPMode& vopmd,
- const CVOPIntYUVBA* pvopfRef0, // reference VOP in a previous time
- const CVOPIntYUVBA* pvopfRef1, // reference VOP in a later time
- CInBitStream* pbitstrmIn, // input bitstream
- CEntropyDecoderSet* pentrdecSet // huffman decoder set
- );
- // attributes
- const CVOPIntYUVBA* pvopfError () {return m_pvopfError;}
- // Operations
- Void decodeOverhead (Int iPart = 0, const CMBMode* pmbmdColocatedRef1 = NULL);
- Void decodeMotionOverhead (const CMBMode* pmbmdColocatedRef1 = NULL); //for sepr SMT
- Void decodeTextureOverhead (const CMBMode* pmbmdColocatedRef1 = NULL); //for sepr SMT
- Void decodeAlphaOverhead ();
- Void textureDecode (const CMacroBlock* pmbPredLeft = NULL,
- const CMacroBlock* pmbPredTop = NULL,
- const CMacroBlock* pmbPredLeftTop = NULL);
- Void textureDecodeAlpha (const CMacroBlock* pmbPredLeft = NULL,
- const CMacroBlock* pmbPredTop = NULL,
- const CMacroBlock* pmbPredLeftTop = NULL);
- Void addPredMBToError (const CVOPIntYUVBA* pvopfPred); // set the predicted MB data
- ///////////////// implementation /////////////////
- private:
- own CVOPIntYUVBA* m_pvopfError; // recodntructed error signals
- CInBitStream* m_pbitstrmIn; // input bitstream
- CEntropyDecoderSet* m_pentrdecSet; // huffman decoder set
- CEntropyDecoder* m_pentrdecDCT; // huffman decoder for DCT
- CEntropyDecoder* m_pentrdecMCBPCintra; // encoder for MCBPC = intra
- CEntropyDecoder* m_pentrdecMCBPCinter; // encoder for MCBPC = inter
- CEntropyDecoder* m_pentrdecCBPY; // decoder for CBPY
- CEntropyDecoder* m_pentrdecMbTypeBVOP; // decoder for MBTYPE (BVOP)
- Void setBlkToErrorMB (const CIntImage* pfiBlkQ, BlockNum blkNum); // overlay a quantized block to currQ
- Void setErrorAlphaZero ();
- };
- #endif // __MBDEC_HPP_