Recon.cpp
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- ////////////////////////////////////////////////////////////////////////////
- //
- //
- // Project : VideoNet version 1.1.
- // Description : Peer to Peer Video Conferencing over the LAN.
- // Author : Nagareshwar Y Talekar ( nsry2002@yahoo.co.in)
- // Date : 15-6-2004.
- //
- // This is the modified version of tmndecode (H.263 decoder)
- // written by Karl & Robert.It was in ANSI C. I have converted into C++
- // so that it can be integrated into any windows application. I have
- // removed some of the files which had display and file storing
- // functions.I have removed the unnecessary code and also added some
- // new files..
- // Original library dealt with files. Input & Output , both were files.
- // I have done some major changes so that it can be used for real time
- // decoding process. Now one can use this library for decoding H263 frames.
- //
- //
- // File description :
- // Name :Recon.cpp
- //
- /////////////////////////////////////////////////////////////////////////////
- /************************************************************************
- *
- * recon.c, motion compensation routines for tmndecode (H.263 decoder)
- * Copyright (C) 1996 Telenor R&D, Norway
- * Karl Olav Lillevold <Karl.Lillevold@nta.no>
- *
- * 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.
- *
- * Karl Olav Lillevold <Karl.Lillevold@nta.no>
- * Telenor Research and Development
- * P.O.Box 83 tel.: +47 63 84 84 00
- * N-2007 Kjeller, Norway fax.: +47 63 81 00 76
- *
- * Robert Danielsen e-mail: Robert.Danielsen@nta.no
- * Telenor Research and Development www: http://www.nta.no/brukere/DVC/
- * P.O.Box 83 tel.: +47 63 84 84 00
- * N-2007 Kjeller, Norway fax.: +47 63 81 00 76
- *
- ************************************************************************/
- /*
- * based on mpeg2decode, (C) 1994, MPEG Software Simulation Group
- * and mpeg2play, (C) 1994 Stefan Eckart
- * <stefan@lis.e-technik.tu-muenchen.de>
- *
- */
- #include "Recon.h"
- void reconstruct(int bx,int by,int P,int bdx,int bdy)
- {
- int w,h,lx,lx2,dx,dy,xp,yp,comp,sum;
- int x,y,mode,xvec,yvec;
- unsigned char *src[3];
- x = bx/16+1; y = by/16+1;
- lx = coded_picture_width;
- if (mv_outside_frame) {
- lx2 = coded_picture_width + 64;
- src[0] = edgeframe[0];
- src[1] = edgeframe[1];
- src[2] = edgeframe[2];
- }
- else {
- lx2 = coded_picture_width;
- src[0] = oldrefframe[0];
- src[1] = oldrefframe[1];
- src[2] = oldrefframe[2];
- }
- mode = modemap[y][x];
- if (P) {
- /* P prediction */
- if (adv_pred_mode) {
- w = 8; h = 8;
- /* Y*/
- for (comp = 0; comp < 4; comp++) {
- xp = bx + ((comp&1)<<3);
- yp = by + ((comp&2)<<2);
- recon_comp_obmc(src[0],newframe[0], lx,lx2,comp,w,h,xp,yp);
- }
- if (mode == MODE_INTER4V) {
- sum = MV[0][1][y][x]+MV[0][2][y][x]+ MV[0][3][y][x]+MV[0][4][y][x];
- dx = sign(sum)*(roundtab[abs(sum)%16] + (abs(sum)/16)*2);
- sum = MV[1][1][y][x]+MV[1][2][y][x]+ MV[1][3][y][x]+MV[1][4][y][x];
- dy = sign(sum)*(roundtab[abs(sum)%16] + (abs(sum)/16)*2);
- }
- else {
- dx = MV[0][0][y][x];
- dy = MV[1][0][y][x];
- /* chroma rounding */
- dx = ( dx % 4 == 0 ? dx >> 1 : (dx>>1)|1 );
- dy = ( dy % 4 == 0 ? dy >> 1 : (dy>>1)|1 );
- }
- lx>>=1;bx>>=1; lx2>>=1;
- by>>=1;
- /* Chroma */
- recon_comp(src[1],newframe[1], lx,lx2,w,h,bx,by,dx,dy,1);
- recon_comp(src[2],newframe[2], lx,lx2,w,h,bx,by,dx,dy,2);
- }
- else { /* normal prediction mode */
- /* P prediction */
- w = 16; h = 16;
- dx = MV[0][0][y][x];
- dy = MV[1][0][y][x];
-
- /* Y */
- recon_comp(src[0],newframe[0], lx,lx2,w,h,bx,by,dx,dy,0);
-
- lx>>=1; w>>=1; bx>>=1; lx2>>=1;
- h>>=1; by>>=1;
- /* chroma rounding */
- dx = ( dx % 4 == 0 ? dx >> 1 : (dx>>1)|1 );
- dy = ( dy % 4 == 0 ? dy >> 1 : (dy>>1)|1 );
- /* Chroma */
- recon_comp(src[1],newframe[1], lx,lx2,w,h,bx,by,dx,dy,1);
- recon_comp(src[2],newframe[2], lx,lx2,w,h,bx,by,dx,dy,2);
- }
- }
- else {
- /* B forward prediction */
- if (adv_pred_mode) {
- if (mode == MODE_INTER4V) {
- w = 8; h = 8;
- /* Y*/
- xvec = yvec = 0;
- for (comp = 0; comp < 4; comp++) {
- xvec += dx = (trb)*MV[0][comp+1][y][x]/trd + bdx;
- yvec += dy = (trb)*MV[1][comp+1][y][x]/trd + bdy;
- xp = bx + ((comp&1)<<3);
- yp = by + ((comp&2)<<2);
- recon_comp(src[0],bframe[0], lx,lx2,w,h,xp,yp,dx,dy,0);
- }
- /* chroma rounding (table 16/H.263) */
- dx = sign(xvec)*(roundtab[abs(xvec)%16] + (abs(xvec)/16)*2);
- dy = sign(yvec)*(roundtab[abs(yvec)%16] + (abs(yvec)/16)*2);
- lx>>=1;bx>>=1; lx2>>=1;
- by>>=1;
- /* Chroma */
- recon_comp(src[1],bframe[1], lx,lx2,w,h,bx,by,dx,dy,1);
- recon_comp(src[2],bframe[2], lx,lx2,w,h,bx,by,dx,dy,2);
- }
- else { /* adv_pred_mode but 16x16 vector */
- w = 16; h = 16;
- dx = (trb)*MV[0][0][y][x]/trd + bdx;
- dy = (trb)*MV[1][0][y][x]/trd + bdy;
- /* Y */
- recon_comp(src[0],bframe[0], lx,lx2,w,h,bx,by,dx,dy,0);
-
- lx>>=1; w>>=1; bx>>=1; lx2>>=1;
- h>>=1; by>>=1;
- xvec = 4*dx;
- yvec = 4*dy;
- /* chroma rounding (table 16/H.263) */
- dx = sign(xvec)*(roundtab[abs(xvec)%16] + (abs(xvec)/16)*2);
- dy = sign(yvec)*(roundtab[abs(yvec)%16] + (abs(yvec)/16)*2);
- /* Chroma */
- recon_comp(src[1],bframe[1], lx,lx2,w,h,bx,by,dx,dy,1);
- recon_comp(src[2],bframe[2], lx,lx2,w,h,bx,by,dx,dy,2);
- }
- }
- else { /* normal B forward prediction */
- w = 16; h = 16;
- dx = (trb)*MV[0][0][y][x]/trd + bdx;
- dy = (trb)*MV[1][0][y][x]/trd + bdy;
- /* Y */
- recon_comp(src[0],bframe[0], lx,lx2,w,h,bx,by,dx,dy,0);
- lx>>=1; w>>=1; bx>>=1; lx2>>=1;
- h>>=1; by>>=1;
- xvec = 4*dx;
- yvec = 4*dy;
- /* chroma rounding (table 16/H.263) */
- dx = sign(xvec)*(roundtab[abs(xvec)%16] + (abs(xvec)/16)*2);
- dy = sign(yvec)*(roundtab[abs(yvec)%16] + (abs(yvec)/16)*2);
- /* Chroma */
- recon_comp(src[1],bframe[1], lx,lx2,w,h,bx,by,dx,dy,1);
- recon_comp(src[2],bframe[2], lx,lx2,w,h,bx,by,dx,dy,2);
- }
- }
- }
- static void recon_comp(unsigned char* src,unsigned char* dst,int lx,int lx2,int w,int h,int x,int y,int dx,int dy,int chroma)
- {
- int xint, xh, yint, yh;
- unsigned char *s, *d;
- xint = dx>>1;
- xh = dx & 1;
- yint = dy>>1;
- yh = dy & 1;
- /* origins */
- s = src + lx2*(y+yint) + x + xint;
- d = dst + lx*y + x;
- if (!xh && !yh)
- if (w!=8)
- rec(s,d,lx,lx2,h);
- else
- recc(s,d,lx,lx2,h);
- else if (!xh && yh)
- if (w!=8)
- recv(s,d,lx,lx2,h);
- else
- recvc(s,d,lx,lx2,h);
- else if (xh && !yh)
- if (w!=8)
- rech(s,d,lx,lx2,h);
- else
- rechc(s,d,lx,lx2,h);
- else /* if (xh && yh) */
- if (w!=8)
- rec4(s,d,lx,lx2,h);
- else
- rec4c(s,d,lx,lx2,h);
- }
- static void rec(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- int j;
- for (j=0; j<h; j++)
- {
- d[0] = s[0];
- d[1] = s[1];
- d[2] = s[2];
- d[3] = s[3];
- d[4] = s[4];
- d[5] = s[5];
- d[6] = s[6];
- d[7] = s[7];
- d[8] = s[8];
- d[9] = s[9];
- d[10] = s[10];
- d[11] = s[11];
- d[12] = s[12];
- d[13] = s[13];
- d[14] = s[14];
- d[15] = s[15];
- s+= lx2;
- d+= lx;
- }
- }
- static void recc(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- int j;
- for (j=0; j<h; j++)
- {
- d[0] = s[0];
- d[1] = s[1];
- d[2] = s[2];
- d[3] = s[3];
- d[4] = s[4];
- d[5] = s[5];
- d[6] = s[6];
- d[7] = s[7];
- s+= lx2;
- d+= lx;
- }
- }
- static void reco(unsigned char* s,int *d,int lx,int lx2,int addflag,int c,int xa,int xb,int ya,int yb)
- {
- int i,j;
- int *om;
- om = &OM[c][ya][0];
- if (!addflag) {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- d[i] = s[i] * om[i];
- }
- s+= lx2;
- d+= lx;
- om+= 8;
- }
- }
- else {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- d[i] += s[i] * om[i];
- }
- s+= lx2;
- d+= lx;
- om+= 8;
- }
- }
- }
- static void rech(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp;
- int j;
- unsigned int s1,s2;
- sp = s;
- dp = d;
- for (j=0; j<h; j++)
- {
- s1=sp[0];
- dp[0] = (unsigned int)(s1+(s2=sp[1])+1)>>1;
- dp[1] = (unsigned int)(s2+(s1=sp[2])+1)>>1;
- dp[2] = (unsigned int)(s1+(s2=sp[3])+1)>>1;
- dp[3] = (unsigned int)(s2+(s1=sp[4])+1)>>1;
- dp[4] = (unsigned int)(s1+(s2=sp[5])+1)>>1;
- dp[5] = (unsigned int)(s2+(s1=sp[6])+1)>>1;
- dp[6] = (unsigned int)(s1+(s2=sp[7])+1)>>1;
- dp[7] = (unsigned int)(s2+(s1=sp[8])+1)>>1;
- dp[8] = (unsigned int)(s1+(s2=sp[9])+1)>>1;
- dp[9] = (unsigned int)(s2+(s1=sp[10])+1)>>1;
- dp[10] = (unsigned int)(s1+(s2=sp[11])+1)>>1;
- dp[11] = (unsigned int)(s2+(s1=sp[12])+1)>>1;
- dp[12] = (unsigned int)(s1+(s2=sp[13])+1)>>1;
- dp[13] = (unsigned int)(s2+(s1=sp[14])+1)>>1;
- dp[14] = (unsigned int)(s1+(s2=sp[15])+1)>>1;
- dp[15] = (unsigned int)(s2+sp[16]+1)>>1;
- sp+= lx2;
- dp+= lx;
- }
- }
- static void rechc(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp;
- int j;
- unsigned int s1,s2;
- sp = s;
- dp = d;
- for (j=0; j<h; j++)
- {
- s1=sp[0];
- dp[0] = (unsigned int)(s1+(s2=sp[1])+1)>>1;
- dp[1] = (unsigned int)(s2+(s1=sp[2])+1)>>1;
- dp[2] = (unsigned int)(s1+(s2=sp[3])+1)>>1;
- dp[3] = (unsigned int)(s2+(s1=sp[4])+1)>>1;
- dp[4] = (unsigned int)(s1+(s2=sp[5])+1)>>1;
- dp[5] = (unsigned int)(s2+(s1=sp[6])+1)>>1;
- dp[6] = (unsigned int)(s1+(s2=sp[7])+1)>>1;
- dp[7] = (unsigned int)(s2+sp[8]+1)>>1;
- sp+= lx2;
- dp+= lx;
- }
- }
- static void recho(unsigned char* s,int *d,int lx,int lx2,int addflag,int c,int xa,int xb,int ya,int yb)
- {
- int *dp,*om;
- unsigned char *sp;
- int i,j;
- sp = s;
- dp = d;
- om = &OM[c][ya][0];
- if (!addflag) {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] = (((unsigned int)(sp[i] + sp[i+1]+1))>>1)*om[i];
- }
- sp+= lx2;
- dp+= lx;
- om+= 8;
- }
- }
- else {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] += (((unsigned int)(sp[i] + sp[i+1]+1))>>1)*OM[c][j][i];
- }
- sp+= lx2;
- dp+= lx;
- om+= 8;
- }
- }
- }
- static void recv(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp,*sp2;
- int j;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- for (j=0; j<h; j++)
- {
- dp[0] = (unsigned int)(sp[0]+sp2[0]+1)>>1;
- dp[1] = (unsigned int)(sp[1]+sp2[1]+1)>>1;
- dp[2] = (unsigned int)(sp[2]+sp2[2]+1)>>1;
- dp[3] = (unsigned int)(sp[3]+sp2[3]+1)>>1;
- dp[4] = (unsigned int)(sp[4]+sp2[4]+1)>>1;
- dp[5] = (unsigned int)(sp[5]+sp2[5]+1)>>1;
- dp[6] = (unsigned int)(sp[6]+sp2[6]+1)>>1;
- dp[7] = (unsigned int)(sp[7]+sp2[7]+1)>>1;
- dp[8] = (unsigned int)(sp[8]+sp2[8]+1)>>1;
- dp[9] = (unsigned int)(sp[9]+sp2[9]+1)>>1;
- dp[10] = (unsigned int)(sp[10]+sp2[10]+1)>>1;
- dp[11] = (unsigned int)(sp[11]+sp2[11]+1)>>1;
- dp[12] = (unsigned int)(sp[12]+sp2[12]+1)>>1;
- dp[13] = (unsigned int)(sp[13]+sp2[13]+1)>>1;
- dp[14] = (unsigned int)(sp[14]+sp2[14]+1)>>1;
- dp[15] = (unsigned int)(sp[15]+sp2[15]+1)>>1;
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- }
- }
- static void recvc(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp,*sp2;
- int j;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- for (j=0; j<h; j++)
- {
- dp[0] = (unsigned int)(sp[0]+sp2[0]+1)>>1;
- dp[1] = (unsigned int)(sp[1]+sp2[1]+1)>>1;
- dp[2] = (unsigned int)(sp[2]+sp2[2]+1)>>1;
- dp[3] = (unsigned int)(sp[3]+sp2[3]+1)>>1;
- dp[4] = (unsigned int)(sp[4]+sp2[4]+1)>>1;
- dp[5] = (unsigned int)(sp[5]+sp2[5]+1)>>1;
- dp[6] = (unsigned int)(sp[6]+sp2[6]+1)>>1;
- dp[7] = (unsigned int)(sp[7]+sp2[7]+1)>>1;
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- }
- }
- static void recvo(unsigned char* s,int *d,int lx,int lx2,int addflag,int c,int xa,int xb,int ya,int yb)
- {
- int *dp,*om;
- unsigned char *sp,*sp2;
- int i,j;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- om = &OM[c][ya][0];
- if (!addflag) {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] = (((unsigned int)(sp[i] + sp2[i]+1))>>1)*om[i];
- }
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- om+= 8;
- }
- }
- else {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] += (((unsigned int)(sp[i] + sp2[i]+1))>>1)*om[i];
- }
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- om+= 8;
- }
- }
- }
- static void rec4(unsigned char* s,unsigned char* d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp,*sp2;
- int j;
- unsigned int s1,s2,s3,s4;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- for (j=0; j<h; j++)
- {
- s1=sp[0]; s3=sp2[0];
- dp[0] = (unsigned int)(s1+(s2=sp[1])+s3+(s4=sp2[1])+2)>>2;
- dp[1] = (unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2;
- dp[2] = (unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2;
- dp[3] = (unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2;
- dp[4] = (unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2;
- dp[5] = (unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2;
- dp[6] = (unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2;
- dp[7] = (unsigned int)(s2+(s1=sp[8])+s4+(s3=sp2[8])+2)>>2;
- dp[8] = (unsigned int)(s1+(s2=sp[9])+s3+(s4=sp2[9])+2)>>2;
- dp[9] = (unsigned int)(s2+(s1=sp[10])+s4+(s3=sp2[10])+2)>>2;
- dp[10] = (unsigned int)(s1+(s2=sp[11])+s3+(s4=sp2[11])+2)>>2;
- dp[11] = (unsigned int)(s2+(s1=sp[12])+s4+(s3=sp2[12])+2)>>2;
- dp[12] = (unsigned int)(s1+(s2=sp[13])+s3+(s4=sp2[13])+2)>>2;
- dp[13] = (unsigned int)(s2+(s1=sp[14])+s4+(s3=sp2[14])+2)>>2;
- dp[14] = (unsigned int)(s1+(s2=sp[15])+s3+(s4=sp2[15])+2)>>2;
- dp[15] = (unsigned int)(s2+sp[16]+s4+sp2[16]+2)>>2;
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- }
- }
- static void rec4c(unsigned char *s ,unsigned char *d,int lx,int lx2,int h)
- {
- unsigned char *dp,*sp,*sp2;
- int j;
- unsigned int s1,s2,s3,s4;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- for (j=0; j<h; j++)
- {
- s1=sp[0]; s3=sp2[0];
- dp[0] = (unsigned int)(s1+(s2=sp[1])+s3+(s4=sp2[1])+2)>>2;
- dp[1] = (unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2;
- dp[2] = (unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2;
- dp[3] = (unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2;
- dp[4] = (unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2;
- dp[5] = (unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2;
- dp[6] = (unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2;
- dp[7] = (unsigned int)(s2+sp[8]+s4+sp2[8]+2)>>2;
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- }
- }
- static void rec4o(unsigned char* s,int *d,int lx,int lx2,int addflag,int c,int xa,int xb,int ya,int yb)
- {
- int *dp,*om;
- unsigned char *sp,*sp2;
- int i,j;
- sp = s;
- sp2 = s+lx2;
- dp = d;
- om = &OM[c][ya][0];
- if (!addflag) {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] = (((unsigned int)(sp[i]+sp2[i]+sp[i+1]+sp2[i+1]+2))>>2)*om[i];
- }
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- om+= 8;
- }
- }
- else {
- for (j = ya; j < yb; j++) {
- for (i = xa; i < xb; i++) {
- dp[i] += (((unsigned int)(sp[i]+sp2[i]+sp[i+1]+sp2[i+1]+2))>>2)*om[i];
- }
- sp+= lx2;
- sp2+= lx2;
- dp+= lx;
- om += 8;
- }
- }
- }
- static void recon_comp_obmc(unsigned char* src,unsigned char* dst,int lx,int lx2,int comp,int w,int h,int x,int y)
- {
- int j,k;
- int xmb,ymb;
- int c8,t8,l8,r8;
- int ti8,li8,ri8;
- int xit,xib,xir,xil;
- int yit,yib,yir,yil;
- int vect,vecb,vecr,vecl;
- int nx[5],ny[5],xint[5],yint[5],xh[5],yh[5];
- int p[64],*pd;
- unsigned char *d,*s[5];
- xmb = (x>>4)+1;
- ymb = (y>>4)+1;
- c8 = (modemap[ymb][xmb] == MODE_INTER4V ? 1 : 0);
- t8 = (modemap[ymb-1][xmb] == MODE_INTER4V ? 1 : 0);
- ti8 = (modemap[ymb-1][xmb] == MODE_INTRA ? 1 : 0);
- ti8 = (modemap[ymb-1][xmb] == MODE_INTRA_Q ? 1 : ti8);
- l8 = (modemap[ymb][xmb-1] == MODE_INTER4V ? 1 : 0);
- li8 = (modemap[ymb][xmb-1] == MODE_INTRA ? 1 : 0);
- li8 = (modemap[ymb][xmb-1] == MODE_INTRA_Q ? 1 : li8);
-
- r8 = (modemap[ymb][xmb+1] == MODE_INTER4V ? 1 : 0);
- ri8 = (modemap[ymb][xmb+1] == MODE_INTRA ? 1 : 0);
- ri8 = (modemap[ymb][xmb+1] == MODE_INTRA_Q ? 1 : ri8);
- if (pb_frame) {
- ti8 = li8 = ri8 = 0;
- }
- switch (comp+1) {
- case 1:
- vect = (ti8 ? (c8 ? 1 : 0) : (t8 ? 3 : 0));
- yit = (ti8 ? ymb : ymb - 1);
- xit = xmb;
- vecb = (c8 ? 3 : 0) ; yib = ymb; xib = xmb;
- vecl = (li8 ? (c8 ? 1 : 0) : (l8 ? 2 : 0));
- yil = ymb;
- xil = (li8 ? xmb : xmb-1);
- vecr = (c8 ? 2 : 0) ; yir = ymb; xir = xmb;
- /* edge handling */
- if (ymb == 1) {
- yit = ymb;
- vect = (c8 ? 1 : 0);
- }
- if (xmb == 1) {
- xil = xmb;
- vecl = (c8 ? 1 : 0);
- }
- break;
-
- case 2:
- vect = (ti8 ? (c8 ? 2 : 0) : (t8 ? 4 : 0));
- yit = (ti8 ? ymb : ymb-1);
- xit = xmb;
- vecb = (c8 ? 4 : 0) ; yib = ymb; xib = xmb;
- vecl = (c8 ? 1 : 0) ; yil = ymb; xil = xmb;
- vecr = (ri8 ? (c8 ? 2 : 0) : (r8 ? 1 : 0));
- yir = ymb;
- xir = (ri8 ? xmb : xmb+1);
- /* edge handling */
- if (ymb == 1) {
- yit = ymb;
- vect = (c8 ? 2 : 0);
- }
- if (xmb == mb_width) {
- xir = xmb;
- vecr = (c8 ? 2 : 0);
- }
- break;
- case 3:
- vect = (c8 ? 1 : 0) ; yit = ymb ; xit = xmb;
- vecb = (c8 ? 3 : 0) ; yib = ymb ; xib = xmb;
-
- vecl = (li8 ? (c8 ? 3 : 0) : (l8 ? 4 : 0));
- yil = ymb;
- xil = (li8 ? xmb : xmb-1);
-
- vecr = (c8 ? 4 : 0) ; yir = ymb ; xir = xmb;
- /* edge handling */
- if (xmb == 1) {
- xil = xmb;
- vecl = (c8 ? 3 : 0);
- }
- break;
- case 4:
- vect = (c8 ? 2 : 0) ; yit = ymb ; xit = xmb;
- vecb = (c8 ? 4 : 0) ; yib = ymb ; xib = xmb;
- vecl = (c8 ? 3 : 0) ; yil = ymb ; xil = xmb;
- vecr = (ri8 ? (c8 ? 4 : 0) : (r8 ? 3 : 0));
- yir = ymb;
- xir = (ri8 ? xmb : xmb+1);
- /* edge handling */
- if (xmb == mb_width) {
- xir = xmb;
- vecr = (c8 ? 4 : 0);
- }
- break;
- default:
- if(trace)
- fputs("Illegal block number in recon_comp_obmc (recon.c)n",dlog);
- return;
- break;
- }
- nx[0] = MV[0][c8 ? comp + 1 : 0][ymb][xmb];
- ny[0] = MV[1][c8 ? comp + 1 : 0][ymb][xmb];
-
- nx[1] = MV[0][vect][yit][xit]; ny[1] = MV[1][vect][yit][xit];
- nx[2] = MV[0][vecb][yib][xib]; ny[2] = MV[1][vecb][yib][xib];
- nx[3] = MV[0][vecr][yir][xir]; ny[3] = MV[1][vecr][yir][xir];
- nx[4] = MV[0][vecl][yil][xil]; ny[4] = MV[1][vecl][yil][xil];
- for (k = 0; k < 5; k++) {
- xint[k] = nx[k]>>1;
- xh[k] = nx[k] & 1;
- yint[k] = ny[k]>>1;
- yh[k] = ny[k] & 1;
- s[k] = src + lx2*(y+yint[k]) + x + xint[k];
- }
-
- d = dst + lx*y + x;
- if (!xh[0] && !yh[0])
- reco(s[0],&p[0],8,lx2,0,0,0,8,0,8);
- else if (!xh[0] && yh[0])
- recvo(s[0],&p[0],8,lx2,0,0,0,8,0,8);
- else if (xh[0] && !yh[0])
- recho(s[0],&p[0],8,lx2,0,0,0,8,0,8);
- else /* if (xh[] && yh[]) */
- rec4o(s[0],&p[0],8,lx2,0,0,0,8,0,8);
- if (!xh[1] && !yh[1])
- reco(s[1],&p[0],8,lx2,1,1,0,8,0,4);
- else if (!xh[1] && yh[1])
- recvo(s[1],&p[0],8,lx2,1,1,0,8,0,4);
- else if (xh[1] && !yh[1])
- recho(s[1],&p[0],8,lx2,1,1,0,8,0,4);
- else /* if (xh[] && yh[]) */
- rec4o(s[1],&p[0],8,lx2,1,1,0,8,0,4);
- if (!xh[2] && !yh[2])
- reco(s[2]+(lx2<<2),&p[32],8,lx2,1,2,0,8,4,8);
- else if (!xh[2] && yh[2])
- recvo(s[2]+(lx2<<2),&p[32],8,lx2,1,2,0,8,4,8);
- else if (xh[2] && !yh[2])
- recho(s[2]+(lx2<<2),&p[32],8,lx2,1,2,0,8,4,8);
- else /* if (xh[] && yh[]) */
- rec4o(s[2]+(lx2<<2),&p[32],8,lx2,1,2,0,8,4,8);
- if (!xh[3] && !yh[3])
- reco(s[3],&p[0],8,lx2,1,3,4,8,0,8);
- else if (!xh[3] && yh[3])
- recvo(s[3],&p[0],8,lx2,1,3,4,8,0,8);
- else if (xh[3] && !yh[3])
- recho(s[3],&p[0],8,lx2,1,3,4,8,0,8);
- else /* if (xh[] && yh[]) */
- rec4o(s[3],&p[0],8,lx2,1,3,4,8,0,8);
- if (!xh[4] && !yh[4])
- reco(s[4],&p[0],8,lx2,1,4,0,4,0,8);
- else if (!xh[4] && yh[4])
- recvo(s[4],&p[0],8,lx2,1,4,0,4,0,8);
- else if (xh[4] && !yh[4])
- recho(s[4],&p[0],8,lx2,1,4,0,4,0,8);
- else /* if (xh[] && yh[]) */
- rec4o(s[4],&p[0],8,lx2,1,4,0,4,0,8);
- pd = &p[0];
- for (j = 0; j < 8; j++) {
- d[0] = (pd[0] + 4 )>>3;
- d[1] = (pd[1] + 4 )>>3;
- d[2] = (pd[2] + 4 )>>3;
- d[3] = (pd[3] + 4 )>>3;
- d[4] = (pd[4] + 4 )>>3;
- d[5] = (pd[5] + 4 )>>3;
- d[6] = (pd[6] + 4 )>>3;
- d[7] = (pd[7] + 4 )>>3;
- d += lx;
- pd += 8;
- }
- }