InterCD 2001 May/may_2001.iso/intercd/root/Multimedia/^DivX_Article/virtualdub/VirtualDub-source-1_4d/VBitmap.h

C/C++ Source or Header | 2001-03-20 | 4.8 KB | 152 lines

//    VirtualDub - Video processing and capture application
//    Copyright (C) 1998-2001 Avery Lee
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program; if not, write to the Free Software
//    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#ifndef f_VIRTUALDUB_VBITMAP_H
#define f_VIRTUALDUB_VBITMAP_H

#include <windows.h>

typedef unsigned long    Pixel;
typedef unsigned long    Pixel32;
typedef unsigned char    Pixel8;
typedef long            PixCoord;
typedef    long            PixDim;
typedef    long            PixOffset;

#ifdef VDEXT_VIDEO_FILTER
#define NOVTABLE __declspec(novtable)
#else
#define NOVTABLE
#endif

class NOVTABLE VBitmap {
public:
    Pixel *            data;
    Pixel *            palette;
    int                depth;
    PixCoord        w, h;
    PixOffset        pitch;
    PixOffset        modulo;
    PixOffset        size;
    PixOffset        offset;

    Pixel *Address(PixCoord x, PixCoord y) const {
        return Addressi(x, h-y-1);
    }

    Pixel *Addressi(PixCoord x, PixCoord y) const {
        return (Pixel *)((char *)data + y*pitch + x*(depth>>3));
    }

    Pixel *Address16(PixCoord x, PixCoord y) const {
        return Address16i(x, h-y-1);
    }

    Pixel *Address16i(PixCoord x, PixCoord y) const {
        return (Pixel *)((char *)data + y*pitch + x*2);
    }

    Pixel *Address32(PixCoord x, PixCoord y) const {
        return Address32i(x, h-y-1);
    }

    Pixel *Address32i(PixCoord x, PixCoord y) const {
        return (Pixel *)((char *)data + y*pitch + x*sizeof(Pixel));
    }

    PixOffset PitchAlign4() {
        return ((w * depth + 31)/32)*4;
    }

    PixOffset PitchAlign8() {
        return ((w * depth + 63)/64)*8;
    }

    PixOffset Modulo() {
        return pitch - (w*depth+7)/8;
    }

    PixOffset Size() {
        return pitch*h;
    }

    //////

    VBitmap() throw() {
#ifdef VDEXT_VIDEO_FILTER
        init();
#endif
    }
    VBitmap(void *data, PixDim w, PixDim h, int depth) throw();
    VBitmap(void *data, BITMAPINFOHEADER *) throw();

#ifdef VDEXT_VIDEO_FILTER
    void init() throw() { *(void **)this = g_vtbls.pvtblVBitmap; }
#endif

    virtual VBitmap& init(void *data, PixDim w, PixDim h, int depth) throw();
    virtual VBitmap& init(void *data, BITMAPINFOHEADER *) throw();

    virtual void MakeBitmapHeader(BITMAPINFOHEADER *bih) const throw();

    virtual void AlignTo4() throw();
    virtual void AlignTo8() throw();

    virtual void BitBlt(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy) const throw();
    virtual void BitBltDither(PixCoord x2, PixCoord y2, const VBitmap *src, PixDim x1, PixDim y1, PixDim dx, PixDim dy, bool to565) const throw();
    virtual void BitBlt565(PixCoord x2, PixCoord y2, const VBitmap *src, PixDim x1, PixDim y1, PixDim dx, PixDim dy) const throw();

    virtual bool BitBltXlat1(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy, const Pixel8 *tbl) const throw();
    virtual bool BitBltXlat3(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy, const Pixel32 *tbl) const throw();

    virtual bool StretchBltNearestFast(PixCoord x1, PixCoord y1, PixDim dx, PixDim dy, const VBitmap *src, double x2, double y2, double dx1, double dy1) const throw();

    virtual bool StretchBltBilinearFast(PixCoord x1, PixCoord y1, PixDim dx, PixDim dy, const VBitmap *src, double x2, double y2, double dx1, double dy1) const throw();

    virtual bool RectFill(PixCoord x1, PixCoord y1, PixDim dx, PixDim dy, Pixel32 c) const throw();

    enum {
        HISTO_LUMA,
        HISTO_GRAY,
        HISTO_RED,
        HISTO_GREEN,
        HISTO_BLUE,
    };

    virtual bool Histogram(PixCoord x, PixCoord y, PixCoord dx, PixCoord dy, long *pHisto, int iHistoType) const throw();

    //// NEW AS OF VIRTUALDUB V1.2B

    virtual bool BitBltFromYUY2(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy) const throw();
    virtual bool BitBltFromI420(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy) const throw();

    //// NEW AS OF VIRTUALDUB V1.4C

    virtual void MakeBitmapHeaderNoPadding(BITMAPINFOHEADER *bih) const throw();

    ///////////

    bool BitBltFromYUY2Fullscale(PixCoord x2, PixCoord y2, const VBitmap *src, PixCoord x1, PixCoord y1, PixDim dx, PixDim dy) const throw();

private:
    bool dualrectclip(PixCoord& x2, PixCoord& y2, const VBitmap *src, PixCoord& x1, PixCoord& y1, PixDim& dx, PixDim& dy) const throw();
};

#undef NOVTABLE

#endif