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- /*****************************************************************************
- * mvpred.c: motion vector prediction
- *****************************************************************************
- * Copyright (C) 2003-2018 x264 project
- *
- * Authors: Loren Merritt <lorenm@u.washington.edu>
- * Fiona Glaser <fiona@x264.com>
- * Laurent Aimar <fenrir@via.ecp.fr>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *
- * This program is also available under a commercial proprietary license.
- * For more information, contact us at licensing@x264.com.
- *****************************************************************************/
- #include "common.h"
- void x264_mb_predict_mv( x264_t *h, int i_list, int idx, int i_width, int16_t mvp[2] )
- {
- const int i8 = x264_scan8[idx];
- const int i_ref= h->mb.cache.ref[i_list][i8];
- int i_refa = h->mb.cache.ref[i_list][i8 - 1];
- int16_t *mv_a = h->mb.cache.mv[i_list][i8 - 1];
- int i_refb = h->mb.cache.ref[i_list][i8 - 8];
- int16_t *mv_b = h->mb.cache.mv[i_list][i8 - 8];
- int i_refc = h->mb.cache.ref[i_list][i8 - 8 + i_width];
- int16_t *mv_c = h->mb.cache.mv[i_list][i8 - 8 + i_width];
- // Partitions not yet reached in scan order are unavailable.
- if( (idx&3) >= 2 + (i_width&1) || i_refc == -2 )
- {
- i_refc = h->mb.cache.ref[i_list][i8 - 8 - 1];
- mv_c = h->mb.cache.mv[i_list][i8 - 8 - 1];
- if( SLICE_MBAFF
- && h->mb.cache.ref[i_list][x264_scan8[0]-1] != -2
- && MB_INTERLACED != h->mb.field[h->mb.i_mb_left_xy[0]] )
- {
- if( idx == 2 )
- {
- mv_c = h->mb.cache.topright_mv[i_list][0];
- i_refc = h->mb.cache.topright_ref[i_list][0];
- }
- else if( idx == 8 )
- {
- mv_c = h->mb.cache.topright_mv[i_list][1];
- i_refc = h->mb.cache.topright_ref[i_list][1];
- }
- else if( idx == 10 )
- {
- mv_c = h->mb.cache.topright_mv[i_list][2];
- i_refc = h->mb.cache.topright_ref[i_list][2];
- }
- }
- }
- if( h->mb.i_partition == D_16x8 )
- {
- if( idx == 0 )
- {
- if( i_refb == i_ref )
- {
- CP32( mvp, mv_b );
- return;
- }
- }
- else
- {
- if( i_refa == i_ref )
- {
- CP32( mvp, mv_a );
- return;
- }
- }
- }
- else if( h->mb.i_partition == D_8x16 )
- {
- if( idx == 0 )
- {
- if( i_refa == i_ref )
- {
- CP32( mvp, mv_a );
- return;
- }
- }
- else
- {
- if( i_refc == i_ref )
- {
- CP32( mvp, mv_c );
- return;
- }
- }
- }
- int i_count = (i_refa == i_ref) + (i_refb == i_ref) + (i_refc == i_ref);
- if( i_count > 1 )
- {
- median:
- x264_median_mv( mvp, mv_a, mv_b, mv_c );
- }
- else if( i_count == 1 )
- {
- if( i_refa == i_ref )
- CP32( mvp, mv_a );
- else if( i_refb == i_ref )
- CP32( mvp, mv_b );
- else
- CP32( mvp, mv_c );
- }
- else if( i_refb == -2 && i_refc == -2 && i_refa != -2 )
- CP32( mvp, mv_a );
- else
- goto median;
- }
- void x264_mb_predict_mv_16x16( x264_t *h, int i_list, int i_ref, int16_t mvp[2] )
- {
- int i_refa = h->mb.cache.ref[i_list][X264_SCAN8_0 - 1];
- int16_t *mv_a = h->mb.cache.mv[i_list][X264_SCAN8_0 - 1];
- int i_refb = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8];
- int16_t *mv_b = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8];
- int i_refc = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8 + 4];
- int16_t *mv_c = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8 + 4];
- if( i_refc == -2 )
- {
- i_refc = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8 - 1];
- mv_c = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8 - 1];
- }
- int i_count = (i_refa == i_ref) + (i_refb == i_ref) + (i_refc == i_ref);
- if( i_count > 1 )
- {
- median:
- x264_median_mv( mvp, mv_a, mv_b, mv_c );
- }
- else if( i_count == 1 )
- {
- if( i_refa == i_ref )
- CP32( mvp, mv_a );
- else if( i_refb == i_ref )
- CP32( mvp, mv_b );
- else
- CP32( mvp, mv_c );
- }
- else if( i_refb == -2 && i_refc == -2 && i_refa != -2 )
- CP32( mvp, mv_a );
- else
- goto median;
- }
- void x264_mb_predict_mv_pskip( x264_t *h, int16_t mv[2] )
- {
- int i_refa = h->mb.cache.ref[0][X264_SCAN8_0 - 1];
- int i_refb = h->mb.cache.ref[0][X264_SCAN8_0 - 8];
- int16_t *mv_a = h->mb.cache.mv[0][X264_SCAN8_0 - 1];
- int16_t *mv_b = h->mb.cache.mv[0][X264_SCAN8_0 - 8];
- if( i_refa == -2 || i_refb == -2 ||
- !( i_refa | M32( mv_a ) ) ||
- !( i_refb | M32( mv_b ) ) )
- {
- M32( mv ) = 0;
- }
- else
- x264_mb_predict_mv_16x16( h, 0, 0, mv );
- }
- static int mb_predict_mv_direct16x16_temporal( x264_t *h )
- {
- int mb_x = h->mb.i_mb_x;
- int mb_y = h->mb.i_mb_y;
- int mb_xy = h->mb.i_mb_xy;
- int type_col[2] = { h->fref[1][0]->mb_type[mb_xy], h->fref[1][0]->mb_type[mb_xy] };
- int partition_col[2] = { h->fref[1][0]->mb_partition[mb_xy], h->fref[1][0]->mb_partition[mb_xy] };
- int preshift = MB_INTERLACED;
- int postshift = MB_INTERLACED;
- int offset = 1;
- int yshift = 1;
- h->mb.i_partition = partition_col[0];
- if( PARAM_INTERLACED && h->fref[1][0]->field[mb_xy] != MB_INTERLACED )
- {
- if( MB_INTERLACED )
- {
- mb_y = h->mb.i_mb_y&~1;
- mb_xy = mb_x + h->mb.i_mb_stride * mb_y;
- type_col[0] = h->fref[1][0]->mb_type[mb_xy];
- type_col[1] = h->fref[1][0]->mb_type[mb_xy + h->mb.i_mb_stride];
- partition_col[0] = h->fref[1][0]->mb_partition[mb_xy];
- partition_col[1] = h->fref[1][0]->mb_partition[mb_xy + h->mb.i_mb_stride];
- preshift = 0;
- yshift = 0;
- if( (IS_INTRA(type_col[0]) || partition_col[0] == D_16x16) &&
- (IS_INTRA(type_col[1]) || partition_col[1] == D_16x16) &&
- partition_col[0] != D_8x8 )
- h->mb.i_partition = D_16x8;
- else
- h->mb.i_partition = D_8x8;
- }
- else
- {
- int cur_poc = h->fdec->i_poc + h->fdec->i_delta_poc[MB_INTERLACED&h->mb.i_mb_y&1];
- int col_parity = abs(h->fref[1][0]->i_poc + h->fref[1][0]->i_delta_poc[0] - cur_poc)
- >= abs(h->fref[1][0]->i_poc + h->fref[1][0]->i_delta_poc[1] - cur_poc);
- mb_y = (h->mb.i_mb_y&~1) + col_parity;
- mb_xy = mb_x + h->mb.i_mb_stride * mb_y;
- type_col[0] = type_col[1] = h->fref[1][0]->mb_type[mb_xy];
- partition_col[0] = partition_col[1] = h->fref[1][0]->mb_partition[mb_xy];
- preshift = 1;
- yshift = 2;
- h->mb.i_partition = partition_col[0];
- }
- offset = 0;
- }
- int i_mb_4x4 = 16 * h->mb.i_mb_stride * mb_y + 4 * mb_x;
- int i_mb_8x8 = 4 * h->mb.i_mb_stride * mb_y + 2 * mb_x;
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, 1, 0 );
- /* Don't do any checks other than the ones we have to, based
- * on the size of the colocated partitions.
- * Depends on the enum order: D_8x8, D_16x8, D_8x16, D_16x16 */
- int max_i8 = (D_16x16 - h->mb.i_partition) + 1;
- int step = (h->mb.i_partition == D_16x8) + 1;
- int width = 4 >> ((D_16x16 - h->mb.i_partition)&1);
- int height = 4 >> ((D_16x16 - h->mb.i_partition)>>1);
- for( int i8 = 0; i8 < max_i8; i8 += step )
- {
- int x8 = i8&1;
- int y8 = i8>>1;
- int ypart = (SLICE_MBAFF && h->fref[1][0]->field[mb_xy] != MB_INTERLACED) ?
- MB_INTERLACED ? y8*6 : 2*(h->mb.i_mb_y&1) + y8 :
- 3*y8;
- if( IS_INTRA( type_col[y8] ) )
- {
- x264_macroblock_cache_ref( h, 2*x8, 2*y8, width, height, 0, 0 );
- x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 0, 0 );
- x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 1, 0 );
- continue;
- }
- int i_part_8x8 = i_mb_8x8 + x8 + (ypart>>1) * h->mb.i_b8_stride;
- int i_ref1_ref = h->fref[1][0]->ref[0][i_part_8x8];
- int i_ref = (map_col_to_list0(i_ref1_ref>>preshift) << postshift) + (offset&i_ref1_ref&MB_INTERLACED);
- if( i_ref >= 0 )
- {
- int dist_scale_factor = h->mb.dist_scale_factor[i_ref][0];
- int16_t *mv_col = h->fref[1][0]->mv[0][i_mb_4x4 + 3*x8 + ypart * h->mb.i_b4_stride];
- int16_t mv_y = (mv_col[1]<<yshift)/2;
- int l0x = ( dist_scale_factor * mv_col[0] + 128 ) >> 8;
- int l0y = ( dist_scale_factor * mv_y + 128 ) >> 8;
- if( h->param.i_threads > 1 && (l0y > h->mb.mv_max_spel[1] || l0y-mv_y > h->mb.mv_max_spel[1]) )
- return 0;
- x264_macroblock_cache_ref( h, 2*x8, 2*y8, width, height, 0, i_ref );
- x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 0, pack16to32_mask(l0x, l0y) );
- x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 1, pack16to32_mask(l0x-mv_col[0], l0y-mv_y) );
- }
- else
- {
- /* the collocated ref isn't in the current list0 */
- /* FIXME: we might still be able to use direct_8x8 on some partitions */
- /* FIXME: with B-pyramid + extensive ref list reordering
- * (not currently used), we would also have to check
- * l1mv1 like in spatial mode */
- return 0;
- }
- }
- return 1;
- }
- static ALWAYS_INLINE int mb_predict_mv_direct16x16_spatial( x264_t *h, int b_interlaced )
- {
- int8_t ref[2];
- ALIGNED_ARRAY_8( int16_t, mv,[2],[2] );
- for( int i_list = 0; i_list < 2; i_list++ )
- {
- int i_refa = h->mb.cache.ref[i_list][X264_SCAN8_0 - 1];
- int16_t *mv_a = h->mb.cache.mv[i_list][X264_SCAN8_0 - 1];
- int i_refb = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8];
- int16_t *mv_b = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8];
- int i_refc = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8 + 4];
- int16_t *mv_c = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8 + 4];
- if( i_refc == -2 )
- {
- i_refc = h->mb.cache.ref[i_list][X264_SCAN8_0 - 8 - 1];
- mv_c = h->mb.cache.mv[i_list][X264_SCAN8_0 - 8 - 1];
- }
- int i_ref = X264_MIN3( (unsigned)i_refa, (unsigned)i_refb, (unsigned)i_refc );
- if( i_ref < 0 )
- {
- i_ref = -1;
- M32( mv[i_list] ) = 0;
- }
- else
- {
- /* Same as x264_mb_predict_mv_16x16, but simplified to eliminate cases
- * not relevant to spatial direct. */
- int i_count = (i_refa == i_ref) + (i_refb == i_ref) + (i_refc == i_ref);
- if( i_count > 1 )
- x264_median_mv( mv[i_list], mv_a, mv_b, mv_c );
- else
- {
- if( i_refa == i_ref )
- CP32( mv[i_list], mv_a );
- else if( i_refb == i_ref )
- CP32( mv[i_list], mv_b );
- else
- CP32( mv[i_list], mv_c );
- }
- }
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, i_list, i_ref );
- x264_macroblock_cache_mv_ptr( h, 0, 0, 4, 4, i_list, mv[i_list] );
- ref[i_list] = i_ref;
- }
- int mb_x = h->mb.i_mb_x;
- int mb_y = h->mb.i_mb_y;
- int mb_xy = h->mb.i_mb_xy;
- int type_col[2] = { h->fref[1][0]->mb_type[mb_xy], h->fref[1][0]->mb_type[mb_xy] };
- int partition_col[2] = { h->fref[1][0]->mb_partition[mb_xy], h->fref[1][0]->mb_partition[mb_xy] };
- h->mb.i_partition = partition_col[0];
- if( b_interlaced && h->fref[1][0]->field[mb_xy] != MB_INTERLACED )
- {
- if( MB_INTERLACED )
- {
- mb_y = h->mb.i_mb_y&~1;
- mb_xy = mb_x + h->mb.i_mb_stride * mb_y;
- type_col[0] = h->fref[1][0]->mb_type[mb_xy];
- type_col[1] = h->fref[1][0]->mb_type[mb_xy + h->mb.i_mb_stride];
- partition_col[0] = h->fref[1][0]->mb_partition[mb_xy];
- partition_col[1] = h->fref[1][0]->mb_partition[mb_xy + h->mb.i_mb_stride];
- if( (IS_INTRA(type_col[0]) || partition_col[0] == D_16x16) &&
- (IS_INTRA(type_col[1]) || partition_col[1] == D_16x16) &&
- partition_col[0] != D_8x8 )
- h->mb.i_partition = D_16x8;
- else
- h->mb.i_partition = D_8x8;
- }
- else
- {
- int cur_poc = h->fdec->i_poc + h->fdec->i_delta_poc[MB_INTERLACED&h->mb.i_mb_y&1];
- int col_parity = abs(h->fref[1][0]->i_poc + h->fref[1][0]->i_delta_poc[0] - cur_poc)
- >= abs(h->fref[1][0]->i_poc + h->fref[1][0]->i_delta_poc[1] - cur_poc);
- mb_y = (h->mb.i_mb_y&~1) + col_parity;
- mb_xy = mb_x + h->mb.i_mb_stride * mb_y;
- type_col[0] = type_col[1] = h->fref[1][0]->mb_type[mb_xy];
- partition_col[0] = partition_col[1] = h->fref[1][0]->mb_partition[mb_xy];
- h->mb.i_partition = partition_col[0];
- }
- }
- int i_mb_4x4 = b_interlaced ? 4 * (h->mb.i_b4_stride*mb_y + mb_x) : h->mb.i_b4_xy;
- int i_mb_8x8 = b_interlaced ? 2 * (h->mb.i_b8_stride*mb_y + mb_x) : h->mb.i_b8_xy;
- int8_t *l1ref0 = &h->fref[1][0]->ref[0][i_mb_8x8];
- int8_t *l1ref1 = &h->fref[1][0]->ref[1][i_mb_8x8];
- int16_t (*l1mv[2])[2] = { (int16_t (*)[2]) &h->fref[1][0]->mv[0][i_mb_4x4],
- (int16_t (*)[2]) &h->fref[1][0]->mv[1][i_mb_4x4] };
- if( (M16( ref ) & 0x8080) == 0x8080 ) /* if( ref[0] < 0 && ref[1] < 0 ) */
- {
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, 0, 0 );
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, 1, 0 );
- return 1;
- }
- if( h->param.i_threads > 1
- && ( mv[0][1] > h->mb.mv_max_spel[1]
- || mv[1][1] > h->mb.mv_max_spel[1] ) )
- {
- #if 0
- fprintf(stderr, "direct_spatial: (%d,%d) (%d,%d) > %d \n",
- mv[0][0], mv[0][1], mv[1][0], mv[1][1],
- h->mb.mv_max_spel[1]);
- #endif
- return 0;
- }
- if( !M64( mv ) || (!b_interlaced && IS_INTRA( type_col[0] )) || (ref[0]&&ref[1]) )
- return 1;
- /* Don't do any checks other than the ones we have to, based
- * on the size of the colocated partitions.
- * Depends on the enum order: D_8x8, D_16x8, D_8x16, D_16x16 */
- int max_i8 = (D_16x16 - h->mb.i_partition) + 1;
- int step = (h->mb.i_partition == D_16x8) + 1;
- int width = 4 >> ((D_16x16 - h->mb.i_partition)&1);
- int height = 4 >> ((D_16x16 - h->mb.i_partition)>>1);
- /* col_zero_flag */
- for( int i8 = 0; i8 < max_i8; i8 += step )
- {
- const int x8 = i8&1;
- const int y8 = i8>>1;
- int ypart = (b_interlaced && h->fref[1][0]->field[mb_xy] != MB_INTERLACED) ?
- MB_INTERLACED ? y8*6 : 2*(h->mb.i_mb_y&1) + y8 :
- 3*y8;
- int o8 = x8 + (ypart>>1) * h->mb.i_b8_stride;
- int o4 = 3*x8 + ypart * h->mb.i_b4_stride;
- if( b_interlaced && IS_INTRA( type_col[y8] ) )
- continue;
- int idx;
- if( l1ref0[o8] == 0 )
- idx = 0;
- else if( l1ref0[o8] < 0 && l1ref1[o8] == 0 )
- idx = 1;
- else
- continue;
- if( abs( l1mv[idx][o4][0] ) <= 1 && abs( l1mv[idx][o4][1] ) <= 1 )
- {
- if( ref[0] == 0 ) x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 0, 0 );
- if( ref[1] == 0 ) x264_macroblock_cache_mv( h, 2*x8, 2*y8, width, height, 1, 0 );
- }
- }
- return 1;
- }
- static int mb_predict_mv_direct16x16_spatial_interlaced( x264_t *h )
- {
- return mb_predict_mv_direct16x16_spatial( h, 1 );
- }
- static int mb_predict_mv_direct16x16_spatial_progressive( x264_t *h )
- {
- return mb_predict_mv_direct16x16_spatial( h, 0 );
- }
- int x264_mb_predict_mv_direct16x16( x264_t *h, int *b_changed )
- {
- int b_available;
- if( h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_NONE )
- return 0;
- else if( h->sh.b_direct_spatial_mv_pred )
- {
- if( SLICE_MBAFF )
- b_available = mb_predict_mv_direct16x16_spatial_interlaced( h );
- else
- b_available = mb_predict_mv_direct16x16_spatial_progressive( h );
- }
- else
- b_available = mb_predict_mv_direct16x16_temporal( h );
- if( b_changed != NULL && b_available )
- {
- int changed;
- changed = M32( h->mb.cache.direct_mv[0][0] ) ^ M32( h->mb.cache.mv[0][x264_scan8[0]] );
- changed |= M32( h->mb.cache.direct_mv[1][0] ) ^ M32( h->mb.cache.mv[1][x264_scan8[0]] );
- changed |= h->mb.cache.direct_ref[0][0] ^ h->mb.cache.ref[0][x264_scan8[0]];
- changed |= h->mb.cache.direct_ref[1][0] ^ h->mb.cache.ref[1][x264_scan8[0]];
- if( !changed && h->mb.i_partition != D_16x16 )
- {
- changed |= M32( h->mb.cache.direct_mv[0][3] ) ^ M32( h->mb.cache.mv[0][x264_scan8[12]] );
- changed |= M32( h->mb.cache.direct_mv[1][3] ) ^ M32( h->mb.cache.mv[1][x264_scan8[12]] );
- changed |= h->mb.cache.direct_ref[0][3] ^ h->mb.cache.ref[0][x264_scan8[12]];
- changed |= h->mb.cache.direct_ref[1][3] ^ h->mb.cache.ref[1][x264_scan8[12]];
- }
- if( !changed && h->mb.i_partition == D_8x8 )
- {
- changed |= M32( h->mb.cache.direct_mv[0][1] ) ^ M32( h->mb.cache.mv[0][x264_scan8[4]] );
- changed |= M32( h->mb.cache.direct_mv[1][1] ) ^ M32( h->mb.cache.mv[1][x264_scan8[4]] );
- changed |= M32( h->mb.cache.direct_mv[0][2] ) ^ M32( h->mb.cache.mv[0][x264_scan8[8]] );
- changed |= M32( h->mb.cache.direct_mv[1][2] ) ^ M32( h->mb.cache.mv[1][x264_scan8[8]] );
- changed |= h->mb.cache.direct_ref[0][1] ^ h->mb.cache.ref[0][x264_scan8[4]];
- changed |= h->mb.cache.direct_ref[1][1] ^ h->mb.cache.ref[1][x264_scan8[4]];
- changed |= h->mb.cache.direct_ref[0][2] ^ h->mb.cache.ref[0][x264_scan8[8]];
- changed |= h->mb.cache.direct_ref[1][2] ^ h->mb.cache.ref[1][x264_scan8[8]];
- }
- *b_changed = changed;
- if( !changed )
- return b_available;
- }
- /* cache ref & mv */
- if( b_available )
- for( int l = 0; l < 2; l++ )
- {
- CP32( h->mb.cache.direct_mv[l][0], h->mb.cache.mv[l][x264_scan8[ 0]] );
- CP32( h->mb.cache.direct_mv[l][1], h->mb.cache.mv[l][x264_scan8[ 4]] );
- CP32( h->mb.cache.direct_mv[l][2], h->mb.cache.mv[l][x264_scan8[ 8]] );
- CP32( h->mb.cache.direct_mv[l][3], h->mb.cache.mv[l][x264_scan8[12]] );
- h->mb.cache.direct_ref[l][0] = h->mb.cache.ref[l][x264_scan8[ 0]];
- h->mb.cache.direct_ref[l][1] = h->mb.cache.ref[l][x264_scan8[ 4]];
- h->mb.cache.direct_ref[l][2] = h->mb.cache.ref[l][x264_scan8[ 8]];
- h->mb.cache.direct_ref[l][3] = h->mb.cache.ref[l][x264_scan8[12]];
- h->mb.cache.direct_partition = h->mb.i_partition;
- }
- return b_available;
- }
- /* This just improves encoder performance, it's not part of the spec */
- void x264_mb_predict_mv_ref16x16( x264_t *h, int i_list, int i_ref, int16_t mvc[9][2], int *i_mvc )
- {
- int16_t (*mvr)[2] = h->mb.mvr[i_list][i_ref];
- int i = 0;
- #define SET_MVP(mvp) \
- { \
- CP32( mvc[i], mvp ); \
- i++; \
- }
- #define SET_IMVP(xy) \
- if( xy >= 0 ) \
- { \
- int shift = 1 + MB_INTERLACED - h->mb.field[xy]; \
- int16_t *mvp = h->mb.mvr[i_list][i_ref<<1>>shift][xy]; \
- mvc[i][0] = mvp[0]; \
- mvc[i][1] = mvp[1]<<1>>shift; \
- i++; \
- }
- /* b_direct */
- if( h->sh.i_type == SLICE_TYPE_B
- && h->mb.cache.ref[i_list][x264_scan8[12]] == i_ref )
- {
- SET_MVP( h->mb.cache.mv[i_list][x264_scan8[12]] );
- }
- if( i_ref == 0 && h->frames.b_have_lowres )
- {
- int idx = i_list ? h->fref[1][0]->i_frame-h->fenc->i_frame-1
- : h->fenc->i_frame-h->fref[0][0]->i_frame-1;
- if( idx <= h->param.i_bframe )
- {
- int16_t (*lowres_mv)[2] = h->fenc->lowres_mvs[i_list][idx];
- if( lowres_mv[0][0] != 0x7fff )
- {
- M32( mvc[i] ) = (M32( lowres_mv[h->mb.i_mb_xy] )*2)&0xfffeffff;
- i++;
- }
- }
- }
- /* spatial predictors */
- if( SLICE_MBAFF )
- {
- SET_IMVP( h->mb.i_mb_left_xy[0] );
- SET_IMVP( h->mb.i_mb_top_xy );
- SET_IMVP( h->mb.i_mb_topleft_xy );
- SET_IMVP( h->mb.i_mb_topright_xy );
- }
- else
- {
- SET_MVP( mvr[h->mb.i_mb_left_xy[0]] );
- SET_MVP( mvr[h->mb.i_mb_top_xy] );
- SET_MVP( mvr[h->mb.i_mb_topleft_xy] );
- SET_MVP( mvr[h->mb.i_mb_topright_xy] );
- }
- #undef SET_IMVP
- #undef SET_MVP
- /* temporal predictors */
- if( h->fref[0][0]->i_ref[0] > 0 )
- {
- x264_frame_t *l0 = h->fref[0][0];
- int field = h->mb.i_mb_y&1;
- int curpoc = h->fdec->i_poc + h->fdec->i_delta_poc[field];
- int refpoc = h->fref[i_list][i_ref>>SLICE_MBAFF]->i_poc;
- refpoc += l0->i_delta_poc[field^(i_ref&1)];
- #define SET_TMVP( dx, dy ) \
- { \
- int mb_index = h->mb.i_mb_xy + dx + dy*h->mb.i_mb_stride; \
- int scale = (curpoc - refpoc) * l0->inv_ref_poc[MB_INTERLACED&field]; \
- mvc[i][0] = (l0->mv16x16[mb_index][0]*scale + 128) >> 8; \
- mvc[i][1] = (l0->mv16x16[mb_index][1]*scale + 128) >> 8; \
- i++; \
- }
- SET_TMVP(0,0);
- if( h->mb.i_mb_x < h->mb.i_mb_width-1 )
- SET_TMVP(1,0);
- if( h->mb.i_mb_y < h->mb.i_mb_height-1 )
- SET_TMVP(0,1);
- #undef SET_TMVP
- }
- *i_mvc = i;
- }
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