vop.hpp
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上传日期:2007-02-02
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文件大小:7k
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:
- vop.hpp
- Abstract:
- class for Video Object Plane
- Revision History:
- *************************************************************************/
- #ifndef __VOP_HPP_
- #define __VOP_HPP_
- #include <stdio.h>
- class CU8Image;
- class CFloatImage;
- class CIntImage;
- class CTransform;
- Class CVideoObjectPlane
- {
- public:
- // Constructors
- ~CVideoObjectPlane ();
- CVideoObjectPlane (const CVideoObjectPlane& vop, CRct r = CRct ()); // copy constructor
- CVideoObjectPlane (CRct r = CRct (), CPixel pxl = transpPixel);
- CVideoObjectPlane ( // load a VOP from MPEG4 file
- const Char* pchFileName, // file name
- UInt ifr, // frame number, 0 is always the base number
- const CRct& rct, // rect for the VOP
- ChromType chrType, // chrominance type
- Int nszHeader = 0 // header to be skipped
- );
- CVideoObjectPlane (const Char* vdlFileName); // load from a vdl stream
- // Attributes
- Bool valid () const {return this != 0;}
- CRct where () const {return m_rc;}
- CPixel pixel (CoordI x, CoordI y) const {return m_ppxl [m_rc.offset (x, y)];}
- CPixel pixel (CoordI x, CoordI y, UInt accuracy) const;
- CPixel pixel (const CSite& st, UInt accuracy) const {return pixel (st.x, st.y, accuracy);} // bi-linear interpolation
- CPixel pixel (const CSite& st) const {return pixel (st.x, st.y);}
- CPixel pixel (CoordD x, CoordD y) const; // bi-linear interpolation
- CPixel pixel (const CSiteD& std) const {return pixel (std.x, std.y);} // bi-linear interpolation
- const CPixel* pixels () const {return m_ppxl;} // return pointer
- const CPixel* pixels (CoordI x, CoordI y) const {return m_ppxl + m_rc.offset (x, y);}
- const CPixel* pixels (const CSite& st) const {return pixels (st.x, st.y);}
- CRct whereVisible() const; // smallest rect containing all non transparent pixels
- // Resultants
- own CVideoObjectPlane* warp (const CAffine2D& aff) const; // affine warp
- own CVideoObjectPlane* warp (const CAffine2D& aff, const CRct& rctWarp) const; // affine warp to rctWarp
- own CVideoObjectPlane* warp (const CPerspective2D& persp) const; // perspective warp
- own CVideoObjectPlane* warp (const CPerspective2D& persp, const CRct& rctWarp) const; // perspective warp to rctWarp
- own CVideoObjectPlane* warp (const CPerspective2D& persp, const CRct& rctWarp, UInt accuracy) const;
- own CVideoObjectPlane* decimate (UInt rateX, UInt rateY) const; // decimate the vframe by rateX and rateY.
- own CVideoObjectPlane* zoomup (UInt rateX, UInt rateY) const;
- own CVideoObjectPlane* expand (UInt rateX, UInt rateY) const;
- own CVideoObjectPlane* biInterpolate () const; // bilinearly interpolate the vframe
- own CVideoObjectPlane* biInterpolate (UInt accuracy) const; // bilinearly interpolate the vframe
- own CVideoObjectPlane* biInterpolate (const CRct& r) const; // bilinearly interpolate the vframe
- own CFloatImage* plane (RGBA pxlCom) const; // get a plane
- Void vdlDump (const Char* fileName = "tmp.vdl", CPixel ppxlFalse = CPixel (0, 0, 0, 0)) const;
- Void vdlByteDump (const Char* fileName = "tmp.vdl", CPixel ppxlFalse = CPixel (0, 0, 0, 0)) const;
- Void dump (FILE* pfFile, ChromType = FOUR_TWO_TWO) const;
- Void dumpAlpha (FILE* pfFile) const;
- Void dumpAbekas (FILE* pfFile) const; //dump abekas file
- // Operations
- Void where (const CRct& r); // crop based on r
- Void pixel (CoordI x, CoordI y, CPixel p) {m_ppxl [m_rc.offset (x, y)] = p;} // set a pixel
- Void pixel (const CSite& st, CPixel p) {pixel (st.x, st.y, p);} // set a pixel
- Void lightChange (Int rShift, Int gShift, Int bShift); // lighting change
- Void falseColor (CPixel pxl); // replace the rgb values of the transparent pixels by pxl
- Void falseColor (U8 r, U8 g, U8 b); // replace the rgb values of the transparent pixels by r, g, b
- Void shift (Int nX, Int nY) {m_rc.shift (nX,nY);} // shift CRct by nX and nY
- Void mirrorPad (); // mirror padding
- Void repeatPad (); // repetitive padding
- Void multiplyAlpha (); // multiply alpha
- Void multiplyBiAlpha (); // multiply alpha
- Void unmultiplyAlpha ();
- Void thresholdAlpha (U8 uThresh); // convert 8-bit alpha to binary alpha
- Void thresholdRGB (U8 uThresh); // threshold RGB components
- Void cropOnAlpha (); // Crop based on the alpha plane
- Void overlay (const CVideoObjectPlane& vop); // overlay VOP on top of *this
- Void setPlane (const CFloatImage& fi, RGBA pxlCom); // set a plane
- Void setPlane (const CIntImage& ii, RGBA pxlCom); // set a plane
- Void setPlane (const CU8Image& ci, RGBA pxlCom); // set a plane
- Void getDownSampledPlane(CFloatImage &fi,Int plane,Int sx,Int sy); // downsample plane into float image
- Void setUpSampledPlane(const CFloatImage &fi,Int plane,Int sx,Int sy); // upsample float image into plane
- Void getDownSampledPlane(CIntImage &fi,Int plane,Int sx,Int sy); // downsample plane into int image
- Void setUpSampledPlane(const CIntImage &fi,Int plane,Int sx,Int sy); // upsample int image into plane
- Void rgbToYUV ();
- Void yuvToRGB ();
- // Overloaded operators
- own CVideoObjectPlane* operator * (const CTransform& tf) const;
- own CVideoObjectPlane* operator * (const CAffine2D& aff) const {return warp (aff);} // affine warp
- own CVideoObjectPlane* operator * (const CPerspective2D& persp) const {return warp (persp);} // perspective warp
- own CVideoObjectPlane* operator - (const CVideoObjectPlane& vop) const;
- ///////////////// implementation /////////////////
- private:
- CPixel* m_ppxl;
- CRct m_rc;
- Void allocate (CRct r, CPixel pxl = transpPixel);
- Void copyConstruct (const CVideoObjectPlane& vop, CRct r = CRct());
- Void swap (CVideoObjectPlane& vop);
- };
- #endif // __VOP_HPP_