*****************************************************************************
* Copyright (C) 2003-2008 x264 project
*
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ * Authors: Fiona Glaser <fiona@x264.com>
+ * Laurent Aimar <fenrir@via.ecp.fr>
* Loren Merritt <lorenm@u.washington.edu>
- * Fiona Glaser <fiona@x264.com>
*
* 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
#include "common.h"
#include "encoder/me.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];
-
- 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( 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 x264_mb_predict_mv_direct16x16_temporal( x264_t *h )
-{
- int i_mb_4x4 = 16 * h->mb.i_mb_stride * h->mb.i_mb_y + 4 * h->mb.i_mb_x;
- int i_mb_8x8 = 4 * h->mb.i_mb_stride * h->mb.i_mb_y + 2 * h->mb.i_mb_x;
- const int type_col = h->fref1[0]->mb_type[h->mb.i_mb_xy];
- const int partition_col = h->fref1[0]->mb_partition[h->mb.i_mb_xy];
-
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, 1, 0 );
-
- h->mb.i_partition = partition_col;
-
- if( IS_INTRA( type_col ) )
- {
- x264_macroblock_cache_ref( h, 0, 0, 4, 4, 0, 0 );
- x264_macroblock_cache_mv( h, 0, 0, 4, 4, 0, 0 );
- x264_macroblock_cache_mv( h, 0, 0, 4, 4, 1, 0 );
- 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 - partition_col) + 1;
- int step = (partition_col == D_16x8) + 1;
- int width = 4 >> ((D_16x16 - partition_col)&1);
- int height = 4 >> ((D_16x16 - partition_col)>>1);
-
- for( int i8 = 0; i8 < max_i8; i8 += step )
- {
- int x8 = i8&1;
- int y8 = i8>>1;
- int i_part_8x8 = i_mb_8x8 + x8 + y8 * h->mb.i_b8_stride;
- int i_ref1_ref = h->fref1[0]->ref[0][i_part_8x8];
- int i_ref = (map_col_to_list0(i_ref1_ref>>h->sh.b_mbaff) << h->sh.b_mbaff) + (i_ref1_ref&h->sh.b_mbaff);
-
- if( i_ref >= 0 )
- {
- int dist_scale_factor = h->mb.dist_scale_factor[i_ref][0];
- int16_t *mv_col = h->fref1[0]->mv[0][i_mb_4x4 + 3*x8 + 3*y8 * h->mb.i_b4_stride];
- int l0x = ( dist_scale_factor * mv_col[0] + 128 ) >> 8;
- int l0y = ( dist_scale_factor * mv_col[1] + 128 ) >> 8;
- if( h->param.i_threads > 1 && (l0y > h->mb.mv_max_spel[1] || l0y-mv_col[1] > 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_col[1]) );
- }
- 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 int x264_mb_predict_mv_direct16x16_spatial( x264_t *h )
-{
- int8_t ref[2];
- ALIGNED_ARRAY_8( int16_t, mv,[2],[2] );
- const int8_t *l1ref0 = &h->fref1[0]->ref[0][h->mb.i_b8_xy];
- const int8_t *l1ref1 = &h->fref1[0]->ref[1][h->mb.i_b8_xy];
- const int16_t (*l1mv[2])[2] = { (const int16_t (*)[2]) &h->fref1[0]->mv[0][h->mb.i_b4_xy],
- (const int16_t (*)[2]) &h->fref1[0]->mv[1][h->mb.i_b4_xy] };
- const int type_col = h->fref1[0]->mb_type[h->mb.i_mb_xy];
- const int partition_col = h->fref1[0]->mb_partition[h->mb.i_mb_xy];
-
- h->mb.i_partition = partition_col;
-
- 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;
- }
-
- 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 ) || IS_INTRA( type_col ) || (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 - partition_col) + 1;
- int step = (partition_col == D_16x8) + 1;
- int width = 4 >> ((D_16x16 - partition_col)&1);
- int height = 4 >> ((D_16x16 - partition_col)>>1);
-
- /* col_zero_flag */
- for( int i8 = 0; i8 < max_i8; i8 += step )
- {
- const int x8 = i8&1;
- const int y8 = i8>>1;
- const int o8 = x8 + y8 * h->mb.i_b8_stride;
- const int o4 = 3*(x8 + y8 * h->mb.i_b4_stride);
- 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;
-}
-
-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 )
- b_available = x264_mb_predict_mv_direct16x16_spatial( h );
- else
- b_available = x264_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++; \
- }
-
- /* 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 )
- {
- int16_t (*lowres_mv)[2] = i_list ? h->fenc->lowres_mvs[1][h->fref1[0]->i_frame-h->fenc->i_frame-1]
- : h->fenc->lowres_mvs[0][h->fenc->i_frame-h->fref0[0]->i_frame-1];
- if( lowres_mv[0][0] != 0x7fff )
- {
- M32( mvc[i] ) = (M32( lowres_mv[h->mb.i_mb_xy] )*2)&0xfffeffff;
- i++;
- }
- }
-
- /* spatial predictors */
- if( h->mb.i_neighbour_frame & MB_LEFT )
- {
- SET_MVP( mvr[h->mb.i_mb_left_xy] );
- }
- if( h->mb.i_neighbour_frame & MB_TOP )
- {
- SET_MVP( mvr[h->mb.i_mb_top_xy] );
-
- if( h->mb.i_neighbour_frame & MB_TOPLEFT )
- SET_MVP( mvr[h->mb.i_mb_topleft_xy] );
- if( h->mb.i_neighbour_frame & MB_TOPRIGHT )
- SET_MVP( mvr[h->mb.i_mb_topright_xy] );
- }
-#undef SET_MVP
-
- /* temporal predictors */
- if( h->fref0[0]->i_ref[0] > 0 )
- {
- x264_frame_t *l0 = h->fref0[0];
- x264_frame_t **fref = i_list ? h->fref1 : h->fref0;
- int field = h->mb.i_mb_y&1;
- int curpoc = h->fdec->i_poc + field*h->sh.i_delta_poc_bottom;
- int refpoc = fref[i_ref>>h->sh.b_mbaff]->i_poc;
- if( h->sh.b_mbaff && field^(i_ref&1) )
- refpoc += h->sh.i_delta_poc_bottom;
-
-#define SET_TMVP(dx, dy) { \
- int i_b4 = h->mb.i_b4_xy + dx*4 + dy*4*h->mb.i_b4_stride; \
- int i_b8 = h->mb.i_b8_xy + dx*2 + dy*2*h->mb.i_b8_stride; \
- int ref_col = l0->ref[0][i_b8]; \
- if( ref_col >= 0 ) \
- { \
- int scale = (curpoc - refpoc) * l0->inv_ref_poc[h->mb.b_interlaced&field][ref_col];\
- mvc[i][0] = (l0->mv[0][i_b4][0]*scale + 128) >> 8;\
- mvc[i][1] = (l0->mv[0][i_b4][1]*scale + 128) >> 8;\
- i++; \
- } \
- }
-
- SET_TMVP(0,0);
- if( h->mb.i_mb_x < h->sps->i_mb_width-1 )
- SET_TMVP(1,0);
- if( h->mb.i_mb_y < h->sps->i_mb_height-1 )
- SET_TMVP(0,1);
-#undef SET_TMVP
- }
-
- *i_mvc = i;
-}
-
/* Set up a lookup table for delta pocs to reduce an IDIV to an IMUL */
static void setup_inverse_delta_pocs( x264_t *h )
{
--- /dev/null
+/*****************************************************************************
+ * mvpred.c: h264 encoder library
+ *****************************************************************************
+ * Copyright (C) 2003-2008 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.
+ *****************************************************************************/
+
+#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];
+
+ 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( 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 x264_mb_predict_mv_direct16x16_temporal( x264_t *h )
+{
+ int i_mb_4x4 = 16 * h->mb.i_mb_stride * h->mb.i_mb_y + 4 * h->mb.i_mb_x;
+ int i_mb_8x8 = 4 * h->mb.i_mb_stride * h->mb.i_mb_y + 2 * h->mb.i_mb_x;
+ const int type_col = h->fref1[0]->mb_type[h->mb.i_mb_xy];
+ const int partition_col = h->fref1[0]->mb_partition[h->mb.i_mb_xy];
+
+ x264_macroblock_cache_ref( h, 0, 0, 4, 4, 1, 0 );
+
+ h->mb.i_partition = partition_col;
+
+ if( IS_INTRA( type_col ) )
+ {
+ x264_macroblock_cache_ref( h, 0, 0, 4, 4, 0, 0 );
+ x264_macroblock_cache_mv( h, 0, 0, 4, 4, 0, 0 );
+ x264_macroblock_cache_mv( h, 0, 0, 4, 4, 1, 0 );
+ 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 - partition_col) + 1;
+ int step = (partition_col == D_16x8) + 1;
+ int width = 4 >> ((D_16x16 - partition_col)&1);
+ int height = 4 >> ((D_16x16 - partition_col)>>1);
+
+ for( int i8 = 0; i8 < max_i8; i8 += step )
+ {
+ int x8 = i8&1;
+ int y8 = i8>>1;
+ int i_part_8x8 = i_mb_8x8 + x8 + y8 * h->mb.i_b8_stride;
+ int i_ref1_ref = h->fref1[0]->ref[0][i_part_8x8];
+ int i_ref = (map_col_to_list0(i_ref1_ref>>h->sh.b_mbaff) << h->sh.b_mbaff) + (i_ref1_ref&h->sh.b_mbaff);
+
+ if( i_ref >= 0 )
+ {
+ int dist_scale_factor = h->mb.dist_scale_factor[i_ref][0];
+ int16_t *mv_col = h->fref1[0]->mv[0][i_mb_4x4 + 3*x8 + 3*y8 * h->mb.i_b4_stride];
+ int l0x = ( dist_scale_factor * mv_col[0] + 128 ) >> 8;
+ int l0y = ( dist_scale_factor * mv_col[1] + 128 ) >> 8;
+ if( h->param.i_threads > 1 && (l0y > h->mb.mv_max_spel[1] || l0y-mv_col[1] > 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_col[1]) );
+ }
+ 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 int x264_mb_predict_mv_direct16x16_spatial( x264_t *h )
+{
+ int8_t ref[2];
+ ALIGNED_ARRAY_8( int16_t, mv,[2],[2] );
+ const int8_t *l1ref0 = &h->fref1[0]->ref[0][h->mb.i_b8_xy];
+ const int8_t *l1ref1 = &h->fref1[0]->ref[1][h->mb.i_b8_xy];
+ const int16_t (*l1mv[2])[2] = { (const int16_t (*)[2]) &h->fref1[0]->mv[0][h->mb.i_b4_xy],
+ (const int16_t (*)[2]) &h->fref1[0]->mv[1][h->mb.i_b4_xy] };
+ const int type_col = h->fref1[0]->mb_type[h->mb.i_mb_xy];
+ const int partition_col = h->fref1[0]->mb_partition[h->mb.i_mb_xy];
+
+ h->mb.i_partition = partition_col;
+
+ 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;
+ }
+
+ 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 ) || IS_INTRA( type_col ) || (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 - partition_col) + 1;
+ int step = (partition_col == D_16x8) + 1;
+ int width = 4 >> ((D_16x16 - partition_col)&1);
+ int height = 4 >> ((D_16x16 - partition_col)>>1);
+
+ /* col_zero_flag */
+ for( int i8 = 0; i8 < max_i8; i8 += step )
+ {
+ const int x8 = i8&1;
+ const int y8 = i8>>1;
+ const int o8 = x8 + y8 * h->mb.i_b8_stride;
+ const int o4 = 3*(x8 + y8 * h->mb.i_b4_stride);
+ 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;
+}
+
+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 )
+ b_available = x264_mb_predict_mv_direct16x16_spatial( h );
+ else
+ b_available = x264_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++; \
+ }
+
+ /* 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 )
+ {
+ int16_t (*lowres_mv)[2] = i_list ? h->fenc->lowres_mvs[1][h->fref1[0]->i_frame-h->fenc->i_frame-1]
+ : h->fenc->lowres_mvs[0][h->fenc->i_frame-h->fref0[0]->i_frame-1];
+ if( lowres_mv[0][0] != 0x7fff )
+ {
+ M32( mvc[i] ) = (M32( lowres_mv[h->mb.i_mb_xy] )*2)&0xfffeffff;
+ i++;
+ }
+ }
+
+ /* spatial predictors */
+ if( h->mb.i_neighbour_frame & MB_LEFT )
+ {
+ SET_MVP( mvr[h->mb.i_mb_left_xy] );
+ }
+ if( h->mb.i_neighbour_frame & MB_TOP )
+ {
+ SET_MVP( mvr[h->mb.i_mb_top_xy] );
+
+ if( h->mb.i_neighbour_frame & MB_TOPLEFT )
+ SET_MVP( mvr[h->mb.i_mb_topleft_xy] );
+ if( h->mb.i_neighbour_frame & MB_TOPRIGHT )
+ SET_MVP( mvr[h->mb.i_mb_topright_xy] );
+ }
+#undef SET_MVP
+
+ /* temporal predictors */
+ if( h->fref0[0]->i_ref[0] > 0 )
+ {
+ x264_frame_t *l0 = h->fref0[0];
+ x264_frame_t **fref = i_list ? h->fref1 : h->fref0;
+ int field = h->mb.i_mb_y&1;
+ int curpoc = h->fdec->i_poc + field*h->sh.i_delta_poc_bottom;
+ int refpoc = fref[i_ref>>h->sh.b_mbaff]->i_poc;
+ if( h->sh.b_mbaff && field^(i_ref&1) )
+ refpoc += h->sh.i_delta_poc_bottom;
+
+#define SET_TMVP(dx, dy) { \
+ int i_b4 = h->mb.i_b4_xy + dx*4 + dy*4*h->mb.i_b4_stride; \
+ int i_b8 = h->mb.i_b8_xy + dx*2 + dy*2*h->mb.i_b8_stride; \
+ int ref_col = l0->ref[0][i_b8]; \
+ if( ref_col >= 0 ) \
+ { \
+ int scale = (curpoc - refpoc) * l0->inv_ref_poc[h->mb.b_interlaced&field][ref_col];\
+ mvc[i][0] = (l0->mv[0][i_b4][0]*scale + 128) >> 8;\
+ mvc[i][1] = (l0->mv[0][i_b4][1]*scale + 128) >> 8;\
+ i++; \
+ } \
+ }
+
+ SET_TMVP(0,0);
+ if( h->mb.i_mb_x < h->sps->i_mb_width-1 )
+ SET_TMVP(1,0);
+ if( h->mb.i_mb_y < h->sps->i_mb_height-1 )
+ SET_TMVP(0,1);
+#undef SET_TMVP
+ }
+
+ *i_mvc = i;
+}
projects / x264 / commitdiff