/***************************************************************************** * *  XVID MPEG-4 VIDEO CODEC *  - GMC interpolation module header - * *  Copyright(C) 2002-2003 Pascal Massimino <skal@planet-d.net> * *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA * * $Id$ * ****************************************************************************/#include "../portab.h"#include "../global.h"/* This is borrowed from	decoder.c   */static __inline intgmc_sanitize(int value, int quarterpel, int fcode){	int length = 1 << (fcode+4);#if 0	if (quarterpel) value *= 2;#endif	if (value < -length)		return -length;	else if (value >= length)		return length-1;	else return value;}/* And this is borrowed from   bitstream.c  until we find a common solution */static uint32_t __inlinelog2bin(uint32_t value){/* Changed by Chenm001 */#if !defined(_MSC_VER)  int n = 0;  while (value) {	value >>= 1;	n++;  }  return n;#else  __asm {	bsr eax, value	inc eax  }#endif}/* 16*sizeof(int) -> 1 or 2 cachelines *//* table lookup might be faster!  (still to be benchmarked) *//*static int log2bin_table[16] =	{ 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4};*//*	1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 */#define RDIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))#define RSHIFT(a,b) ( (a)>0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b))#define MLT(i)  (((16-(i))<<16) + (i))static const uint32_t MTab[16] = {  MLT( 0), MLT( 1), MLT( 2), MLT( 3), MLT( 4), MLT( 5), MLT( 6), MLT( 7),  MLT( 8), MLT( 9), MLT(10), MLT(11), MLT(12), MLT(13), MLT(14), MLT(15)};#undef MLT/* ************************************************************ * Pts = 2 or 3 * * Warning! *src is the global frame pointer (that is: adress * of pixel 0,0), not the macroblock one. * Conversely, *dst is the macroblock top-left adress. */void Predict_16x16_C(const NEW_GMC_DATA * const This,					 uint8_t *dst, const uint8_t *src,					 int dststride, int srcstride, int x, int y, int rounding);void Predict_8x8_C(const NEW_GMC_DATA * const This,				   uint8_t *uDst, const uint8_t *uSrc,				   uint8_t *vDst, const uint8_t *vSrc,				   int dststride, int srcstride, int x, int y, int rounding);void get_average_mv_C(const NEW_GMC_DATA * const Dsp, VECTOR * const mv,					  int x, int y, int qpel);/* ************************************************************ * simplified version for 1 warp point */void Predict_1pt_16x16_C(const NEW_GMC_DATA * const This,						 uint8_t *Dst, const uint8_t *Src,						 int dststride, int srcstride, int x, int y, int rounding);void Predict_1pt_8x8_C(const NEW_GMC_DATA * const This,					   uint8_t *uDst, const uint8_t *uSrc,					   uint8_t *vDst, const uint8_t *vSrc,					   int dststride, int srcstride, int x, int y, int rounding);void get_average_mv_1pt_C(const NEW_GMC_DATA * const Dsp, VECTOR * const mv,						  int x, int y, int qpel);/* ************************************************************* * Warning! It's Accuracy being passed, not 'resolution'! */void generate_GMCparameters(int nb_pts, const int accuracy,							const WARPPOINTS *const pts,							const int width, const int height,							NEW_GMC_DATA *const gmc);/* ******************************************************************* */voidgenerate_GMCimage(	const NEW_GMC_DATA *const gmc_data, /* [input] precalculated data */					const IMAGE *const pRef,		/* [input] */					const int mb_width,					const int mb_height,					const int stride,					const int stride2,					const int fcode, 				/* [input] some parameters... */  					const int32_t quarterpel,		/* [input] for rounding avgMV */					const int reduced_resolution,	/* [input] ignored */					const int32_t rounding,			/* [input] for rounding image data */					MACROBLOCK *const pMBs, 		/* [output] average motion vectors */					IMAGE *const pGMC);				/* [output] full warped image */