--- mbprediction.h 2002/06/30 10:46:29 1.11 +++ mbprediction.h 2002/07/03 12:32:50 1.12 @@ -26,7 +26,7 @@ * along with this program; if not, write to the xvid_free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * $Id: mbprediction.h,v 1.11 2002/06/30 10:46:29 suxen_drol Exp $ + * $Id: mbprediction.h,v 1.12 2002/07/03 12:32:50 suxen_drol Exp $ * *************************************************************************/ @@ -207,18 +207,6 @@ } - -int -get_pmvdata2(const MACROBLOCK * const pMBs, - const uint32_t x, - const uint32_t y, - const uint32_t x_dim, - const uint32_t block, - VECTOR * const pmv, - int32_t * const psad, - const int bound); - - /* This is somehow a copy of get_pmv, but returning all MVs and Minimum SAD instead of only Median MV */ @@ -359,7 +347,7 @@ psad[3] = MV_MAX_ERROR; } else { pmv[3] = pMBs[xin3 + yin3 * x_dim].mvs[vec3]; - psad[3] = pMBs[xin2 + yin2 * x_dim].sad8[vec3]; + psad[3] = pMBs[xin3 + yin3 * x_dim].sad8[vec3]; } if ((MVequal(pmv[1], pmv[2])) && (MVequal(pmv[1], pmv[3]))) { @@ -382,5 +370,233 @@ } + /* + * MODE_INTER, vm18 page 48 + * MODE_INTER4V vm18 page 51 + * + * (x,y-1) (x+1,y-1) + * [ | ] [ | ] + * [ 2 | 3 ] [ 2 | ] + * + * (x-1,y) (x,y) (x+1,y) + * [ | 1 ] [ 0 | 1 ] [ 0 | ] + * [ | 3 ] [ 2 | 3 ] [ | ] + */ + +static __inline VECTOR +get_pmv2(const MACROBLOCK * const mbs, + const int mb_width, + const int bound, + const int x, + const int y, + const int block) +{ + static const VECTOR zeroMV = { 0, 0 }; + + int lx, ly, lz; /* left */ + int tx, ty, tz; /* top */ + int rx, ry, rz; /* top-right */ + int lpos, tpos, rpos; + int num_cand, last_cand; + + VECTOR pmv[4]; /* left neighbour, top neighbour, top-right neighbour */ + + switch (block) { + case 0: + lx = x - 1; ly = y; lz = 1; + tx = x; ty = y - 1; tz = 2; + rx = x + 1; ry = y - 1; rz = 2; + break; + case 1: + lx = x; ly = y; lz = 0; + tx = x; ty = y - 1; tz = 3; + rx = x + 1; ry = y - 1; rz = 2; + break; + case 2: + lx = x - 1; ly = y; lz = 3; + tx = x; ty = y; tz = 0; + rx = x; ry = y; rz = 1; + break; + default: + lx = x; ly = y; lz = 2; + tx = x; ty = y; tz = 0; + rx = x; ry = y; rz = 1; + } + + lpos = lx + ly * mb_width; + rpos = rx + ry * mb_width; + tpos = tx + ty * mb_width; + num_cand = 0; + + if (lpos >= bound && lx >= 0) { + num_cand++; + last_cand = 1; + pmv[1] = mbs[lpos].mvs[lz]; + } else { + pmv[1] = zeroMV; + } + + if (tpos >= bound) { + num_cand++; + last_cand = 2; + pmv[2] = mbs[tpos].mvs[tz]; + } else { + pmv[2] = zeroMV; + } + + if (rpos >= bound && rx < mb_width) { + num_cand++; + last_cand = 3; + pmv[3] = mbs[rpos].mvs[rz]; + } else { + pmv[3] = zeroMV; + } + + /* if only one valid candidate preictor, the invalid candiates are set to the canidate */ + if (num_cand != 1) { + /* set median */ + + pmv[0].x = + MIN(MAX(pmv[1].x, pmv[2].x), + MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); + pmv[0].y = + MIN(MAX(pmv[1].y, pmv[2].y), + MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); + return pmv[0]; + } + + return pmv[last_cand]; /* no point calculating median mv */ +} + + + + /* + * pmv are filled with: + * [0]: Median (or whatever is correct in a special case) + * [1]: left neighbour + * [2]: top neighbour + * [3]: topright neighbour + * psad are filled with: + * [0]: minimum of [1] to [3] + * [1]: left neighbour's SAD (NB:[1] to [3] are actually not needed) + * [2]: top neighbour's SAD + * [3]: topright neighbour's SAD + */ +static __inline int +get_pmvdata2(const MACROBLOCK * const mbs, + const int mb_width, + const int bound, + const int x, + const int y, + const int block, + VECTOR * const pmv, + int32_t * const psad) +{ + static const VECTOR zeroMV = { 0, 0 }; + + int lx, ly, lz; /* left */ + int tx, ty, tz; /* top */ + int rx, ry, rz; /* top-right */ + int lpos, tpos, rpos; + int num_cand, last_cand; + + switch (block) { + case 0: + lx = x - 1; ly = y; lz = 1; + tx = x; ty = y - 1; tz = 2; + rx = x + 1; ry = y - 1; rz = 2; + break; + case 1: + lx = x; ly = y; lz = 0; + tx = x; ty = y - 1; tz = 3; + rx = x + 1; ry = y - 1; rz = 2; + break; + case 2: + lx = x - 1; ly = y; lz = 3; + tx = x; ty = y; tz = 0; + rx = x; ry = y; rz = 1; + break; + default: + lx = x; ly = y; lz = 2; + tx = x; ty = y; tz = 0; + rx = x; ry = y; rz = 1; + } + + lpos = lx + ly * mb_width; + rpos = rx + ry * mb_width; + tpos = tx + ty * mb_width; + num_cand = 0; + + if (lpos >= bound && lx >= 0) { + num_cand++; + last_cand = 1; + pmv[1] = mbs[lpos].mvs[lz]; + psad[1] = mbs[lpos].sad8[lz]; + } else { + pmv[1] = zeroMV; + psad[1] = MV_MAX_ERROR; + } + + if (tpos >= bound) { + num_cand++; + last_cand = 2; + pmv[2]= mbs[tpos].mvs[tz]; + psad[2] = mbs[tpos].sad8[tz]; + } else { + pmv[2] = zeroMV; + psad[2] = MV_MAX_ERROR; + } + + if (rpos >= bound && rx < mb_width) { + num_cand++; + last_cand = 3; + pmv[3] = mbs[rpos].mvs[rz]; + psad[3] = mbs[rpos].sad8[rz]; + } else { + pmv[3] = zeroMV; + psad[3] = MV_MAX_ERROR; + } + + /* original pmvdata() compatibility hack */ + if (x == 0 && y == 0 && block == 0) + { + pmv[0] = pmv[1] = pmv[2] = pmv[3] = zeroMV; + psad[0] = 0; + psad[1] = psad[2] = psad[3] = MV_MAX_ERROR; + return 0; + } + + /* if only one valid candidate preictor, the invalid candiates are set to the canidate */ + if (num_cand == 1) { + pmv[0] = pmv[last_cand]; + psad[0] = psad[last_cand]; + // return MVequal(pmv[0], zeroMV); /* no point calculating median mv and minimum sad */ + + /* original pmvdata() compatibility hack */ + return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); + } + + if ((MVequal(pmv[1], pmv[2])) && (MVequal(pmv[1], pmv[3]))) { + pmv[0] = pmv[1]; + psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); + return 1; + /* compatibility patch */ + //return y==0 && block <= 1 ? 0 : 1; + } + + /* set median, minimum */ + + pmv[0].x = + MIN(MAX(pmv[1].x, pmv[2].x), + MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); + pmv[0].y = + MIN(MAX(pmv[1].y, pmv[2].y), + MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); + + psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); + + return 0; +} + #endif /* _MBPREDICTION_H_ */