/* 
 *	Copyright (C) 2003-2006 Gabest
 *	http://www.gabest.org
 *
 *  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, 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 GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

#pragma once

#include <vector>
#include "../SubPic/ISubPic.h"
#ifdef _VSMOD // patch m004. gradient colors
#include "STS.h" 
#endif

#ifdef _VSMOD // patch m006. moveable vector clip
class MOD_MOVEVC
{
public:
	// movevc
	bool enable;
	CSize size;
	CPoint pos;
	
	//CSize canvas;	// canvas size
	CSize spd;		// output canvas size
	CPoint curpos;  // output origin point
	int hfull;		// full height
	byte* alphamask;

	MOD_MOVEVC();

	byte GetAlphaValue(int wx,int wy);
	void clear();
};
#endif

#define PT_MOVETONC 0xfe
#define PT_BSPLINETO 0xfc
#define PT_BSPLINEPATCHTO 0xfa 

class RasterizerNfo
{
public:
	int w;
	int h;
	int spdw;
	int overlayp;
	int pitch;
	DWORD color;

	int xo;
	int yo;

	const DWORD* sw;
	byte* s;
	byte* src;
	DWORD* dst;

#ifdef _VSMOD
	int typ;
	MOD_GRADIENT mod_grad;
	MOD_MOVEVC mod_vc;
#else
	byte* am;
#endif

	RasterizerNfo();
};

class Rasterizer
{
	bool fFirstSet;
	CPoint firstp, lastp;

protected:
	BYTE* mpPathTypes;
	POINT* mpPathPoints;
	size_t mPathPoints;

private:
	int mWidth, mHeight;

	typedef std::pair<unsigned __int64, unsigned __int64> tSpan;
	typedef std::vector<tSpan> tSpanBuffer;

	tSpanBuffer mOutline;
	tSpanBuffer mWideOutline;
	int mWideBorder;

	struct Edge {
		int next;
		int posandflag;
	} *mpEdgeBuffer;
	size_t mEdgeHeapSize;
	size_t mEdgeNext;

	size_t* mpScanBuffer;

	typedef unsigned char byte;

protected:
	int mPathOffsetX, mPathOffsetY;
	int mOffsetX, mOffsetY;
	int mOverlayWidth, mOverlayHeight;
	byte *mpOverlayBuffer;

private:
	void _TrashPath();
	void _TrashOverlay();
	void _ReallocEdgeBuffer(int edges);
	void _EvaluateBezier(int ptbase, bool fBSpline);
	void _EvaluateLine(int pt1idx, int pt2idx);
	void _EvaluateLine(int x0, int y0, int x1, int y1);
	static void _OverlapRegion(tSpanBuffer& dst, tSpanBuffer& src, int dx, int dy);
	// helpers
	void Draw_noAlpha_spFF_Body_0(RasterizerNfo& rnfo);
	void Draw_noAlpha_spFF_noBody_0(RasterizerNfo& rnfo);
	void Draw_noAlpha_sp_Body_0(RasterizerNfo& rnfo);
	void Draw_noAlpha_sp_noBody_0(RasterizerNfo& rnfo);
	void Draw_noAlpha_spFF_Body_sse2(RasterizerNfo& rnfo);
	void Draw_noAlpha_spFF_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_noAlpha_sp_Body_sse2(RasterizerNfo& rnfo);
	void Draw_noAlpha_sp_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_Alpha_spFF_Body_0(RasterizerNfo& rnfo);
	void Draw_Alpha_spFF_noBody_0(RasterizerNfo& rnfo);
	void Draw_Alpha_sp_Body_0(RasterizerNfo& rnfo);
	void Draw_Alpha_sp_noBody_0(RasterizerNfo& rnfo);
	void Draw_Alpha_spFF_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Alpha_spFF_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_Alpha_sp_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Alpha_sp_noBody_sse2(RasterizerNfo& rnfo);

#ifdef _VSMOD // patch m004. gradient colors
	void Draw_Grad_noAlpha_spFF_Body_0(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_spFF_noBody_0(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_sp_Body_0(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_sp_noBody_0(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_spFF_Body_0(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_spFF_noBody_0(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_sp_Body_0(RasterizerNfo& rnfo); 
	void Draw_Grad_Alpha_sp_noBody_0(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_spFF_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_spFF_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_sp_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_noAlpha_sp_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_spFF_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_spFF_noBody_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_sp_Body_sse2(RasterizerNfo& rnfo);
	void Draw_Grad_Alpha_sp_noBody_sse2(RasterizerNfo& rnfo);
#endif
public:
	Rasterizer();
	virtual ~Rasterizer();

	bool BeginPath(HDC hdc);
	bool EndPath(HDC hdc);
	bool PartialBeginPath(HDC hdc, bool bClearPath);
	bool PartialEndPath(HDC hdc, long dx, long dy);
	bool ScanConvert();
	bool CreateWidenedRegion(int borderX, int borderY);
	void DeleteOutlines();
	bool Rasterize(int xsub, int ysub, int fBlur, double fGaussianBlur);
	int getOverlayWidth();
#ifdef _VSMOD // patch m004. gradient colors
	CRect Draw(SubPicDesc& spd, CRect& clipRect, byte* pAlphaMask, int xsub, int ysub, const DWORD* switchpts, bool fBody, bool fBorder, int typ, MOD_GRADIENT& mod_grad, MOD_MOVEVC& mod_vc);
#else
	CRect Draw(SubPicDesc& spd, CRect& clipRect, byte* pAlphaMask, int xsub, int ysub, const DWORD* switchpts, bool fBody, bool fBorder);
#endif
	void FillSolidRect(SubPicDesc& spd, int x, int y, int nWidth, int nHeight, DWORD lColor);
};