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https://git.videolan.org/git/ffmpeg.git
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793 lines
31 KiB
C
793 lines
31 KiB
C
/*
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* H.26L/H.264/AVC/JVT/14496-10/... motion vector predicion
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* H.264 / AVC / MPEG4 part10 motion vector predicion.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_H264_MVPRED_H
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#define AVCODEC_H264_MVPRED_H
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#include "internal.h"
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#include "avcodec.h"
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#include "h264.h"
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//#undef NDEBUG
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#include <assert.h>
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static av_always_inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
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const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
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MpegEncContext *s = &h->s;
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/* there is no consistent mapping of mvs to neighboring locations that will
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* make mbaff happy, so we can't move all this logic to fill_caches */
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if(FRAME_MBAFF){
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#define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4)\
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const int xy = XY, y4 = Y4;\
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const int mb_type = mb_types[xy+(y4>>2)*s->mb_stride];\
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if(!USES_LIST(mb_type,list))\
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return LIST_NOT_USED;\
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mv = s->current_picture_ptr->f.motion_val[list][h->mb2b_xy[xy] + 3 + y4*h->b_stride];\
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h->mv_cache[list][scan8[0]-2][0] = mv[0];\
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h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
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return s->current_picture_ptr->f.ref_index[list][4*xy + 1 + (y4 & ~1)] REF_OP;
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if(topright_ref == PART_NOT_AVAILABLE
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&& i >= scan8[0]+8 && (i&7)==4
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&& h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
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const uint32_t *mb_types = s->current_picture_ptr->f.mb_type;
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const int16_t *mv;
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AV_ZERO32(h->mv_cache[list][scan8[0]-2]);
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*C = h->mv_cache[list][scan8[0]-2];
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if(!MB_FIELD
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&& IS_INTERLACED(h->left_type[0])){
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SET_DIAG_MV(*2, >>1, h->left_mb_xy[0]+s->mb_stride, (s->mb_y&1)*2+(i>>5));
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}
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if(MB_FIELD
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&& !IS_INTERLACED(h->left_type[0])){
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// left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
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SET_DIAG_MV(/2, <<1, h->left_mb_xy[i>=36], ((i>>2))&3);
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}
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}
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#undef SET_DIAG_MV
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}
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if(topright_ref != PART_NOT_AVAILABLE){
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*C= h->mv_cache[list][ i - 8 + part_width ];
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return topright_ref;
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}else{
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tprintf(s->avctx, "topright MV not available\n");
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*C= h->mv_cache[list][ i - 8 - 1 ];
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return h->ref_cache[list][ i - 8 - 1 ];
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}
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}
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/**
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* Get the predicted MV.
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* @param n the block index
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* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
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const int index8= scan8[n];
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const int top_ref= h->ref_cache[list][ index8 - 8 ];
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const int left_ref= h->ref_cache[list][ index8 - 1 ];
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const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
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const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
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const int16_t * C;
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int diagonal_ref, match_count;
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assert(part_width==1 || part_width==2 || part_width==4);
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/* mv_cache
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B . . A T T T T
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U . . L . . , .
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U . . L . . . .
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U . . L . . , .
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. . . L . . . .
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*/
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diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
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match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
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tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
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if(match_count > 1){ //most common
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*mx= mid_pred(A[0], B[0], C[0]);
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*my= mid_pred(A[1], B[1], C[1]);
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}else if(match_count==1){
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if(left_ref==ref){
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*mx= A[0];
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*my= A[1];
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}else if(top_ref==ref){
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*mx= B[0];
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*my= B[1];
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}else{
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*mx= C[0];
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*my= C[1];
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}
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}else{
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if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
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*mx= A[0];
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*my= A[1];
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}else{
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*mx= mid_pred(A[0], B[0], C[0]);
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*my= mid_pred(A[1], B[1], C[1]);
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}
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}
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tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
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}
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/**
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* Get the directionally predicted 16x8 MV.
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* @param n the block index
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
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if(n==0){
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const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
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const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
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tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
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if(top_ref == ref){
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*mx= B[0];
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*my= B[1];
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return;
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}
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}else{
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const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
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const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
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tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
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if(left_ref == ref){
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*mx= A[0];
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*my= A[1];
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return;
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}
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}
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//RARE
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pred_motion(h, n, 4, list, ref, mx, my);
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}
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/**
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* Get the directionally predicted 8x16 MV.
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* @param n the block index
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
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if(n==0){
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const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
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const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
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tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
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if(left_ref == ref){
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*mx= A[0];
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*my= A[1];
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return;
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}
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}else{
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const int16_t * C;
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int diagonal_ref;
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diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
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tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
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if(diagonal_ref == ref){
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*mx= C[0];
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*my= C[1];
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return;
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}
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}
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//RARE
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pred_motion(h, n, 2, list, ref, mx, my);
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}
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#define FIX_MV_MBAFF(type, refn, mvn, idx)\
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if(FRAME_MBAFF){\
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if(MB_FIELD){\
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if(!IS_INTERLACED(type)){\
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refn <<= 1;\
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AV_COPY32(mvbuf[idx], mvn);\
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mvbuf[idx][1] /= 2;\
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mvn = mvbuf[idx];\
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}\
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}else{\
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if(IS_INTERLACED(type)){\
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refn >>= 1;\
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AV_COPY32(mvbuf[idx], mvn);\
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mvbuf[idx][1] <<= 1;\
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mvn = mvbuf[idx];\
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}\
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}\
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}
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static av_always_inline void pred_pskip_motion(H264Context * const h){
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DECLARE_ALIGNED(4, static const int16_t, zeromv)[2] = {0};
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DECLARE_ALIGNED(4, int16_t, mvbuf)[3][2];
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MpegEncContext * const s = &h->s;
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int8_t *ref = s->current_picture.f.ref_index[0];
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int16_t (*mv)[2] = s->current_picture.f.motion_val[0];
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int top_ref, left_ref, diagonal_ref, match_count, mx, my;
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const int16_t *A, *B, *C;
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int b_stride = h->b_stride;
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
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/* To avoid doing an entire fill_decode_caches, we inline the relevant parts here.
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* FIXME: this is a partial duplicate of the logic in fill_decode_caches, but it's
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* faster this way. Is there a way to avoid this duplication?
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*/
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if(USES_LIST(h->left_type[LTOP], 0)){
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left_ref = ref[4*h->left_mb_xy[LTOP] + 1 + (h->left_block[0]&~1)];
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A = mv[h->mb2b_xy[h->left_mb_xy[LTOP]] + 3 + b_stride*h->left_block[0]];
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FIX_MV_MBAFF(h->left_type[LTOP], left_ref, A, 0);
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if(!(left_ref | AV_RN32A(A))){
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goto zeromv;
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}
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}else if(h->left_type[LTOP]){
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left_ref = LIST_NOT_USED;
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A = zeromv;
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}else{
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goto zeromv;
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}
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if(USES_LIST(h->top_type, 0)){
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top_ref = ref[4*h->top_mb_xy + 2];
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B = mv[h->mb2b_xy[h->top_mb_xy] + 3*b_stride];
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FIX_MV_MBAFF(h->top_type, top_ref, B, 1);
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if(!(top_ref | AV_RN32A(B))){
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goto zeromv;
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}
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}else if(h->top_type){
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top_ref = LIST_NOT_USED;
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B = zeromv;
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}else{
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goto zeromv;
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}
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tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
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if(USES_LIST(h->topright_type, 0)){
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diagonal_ref = ref[4*h->topright_mb_xy + 2];
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C = mv[h->mb2b_xy[h->topright_mb_xy] + 3*b_stride];
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FIX_MV_MBAFF(h->topright_type, diagonal_ref, C, 2);
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}else if(h->topright_type){
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diagonal_ref = LIST_NOT_USED;
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C = zeromv;
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}else{
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if(USES_LIST(h->topleft_type, 0)){
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diagonal_ref = ref[4*h->topleft_mb_xy + 1 + (h->topleft_partition & 2)];
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C = mv[h->mb2b_xy[h->topleft_mb_xy] + 3 + b_stride + (h->topleft_partition & 2*b_stride)];
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FIX_MV_MBAFF(h->topleft_type, diagonal_ref, C, 2);
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}else if(h->topleft_type){
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diagonal_ref = LIST_NOT_USED;
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C = zeromv;
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}else{
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diagonal_ref = PART_NOT_AVAILABLE;
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C = zeromv;
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}
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}
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match_count= !diagonal_ref + !top_ref + !left_ref;
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tprintf(h->s.avctx, "pred_pskip_motion match_count=%d\n", match_count);
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if(match_count > 1){
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mx = mid_pred(A[0], B[0], C[0]);
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my = mid_pred(A[1], B[1], C[1]);
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}else if(match_count==1){
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if(!left_ref){
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mx = A[0];
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my = A[1];
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}else if(!top_ref){
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mx = B[0];
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my = B[1];
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}else{
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mx = C[0];
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my = C[1];
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}
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}else{
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mx = mid_pred(A[0], B[0], C[0]);
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my = mid_pred(A[1], B[1], C[1]);
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}
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fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
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return;
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zeromv:
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fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
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return;
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}
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static void fill_decode_neighbors(H264Context *h, int mb_type){
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MpegEncContext * const s = &h->s;
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const int mb_xy= h->mb_xy;
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int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
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static const uint8_t left_block_options[4][32]={
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{0,1,2,3,7,10,8,11,3+0*4, 3+1*4, 3+2*4, 3+3*4, 1+4*4, 1+8*4, 1+5*4, 1+9*4},
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{2,2,3,3,8,11,8,11,3+2*4, 3+2*4, 3+3*4, 3+3*4, 1+5*4, 1+9*4, 1+5*4, 1+9*4},
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{0,0,1,1,7,10,7,10,3+0*4, 3+0*4, 3+1*4, 3+1*4, 1+4*4, 1+8*4, 1+4*4, 1+8*4},
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{0,2,0,2,7,10,7,10,3+0*4, 3+2*4, 3+0*4, 3+2*4, 1+4*4, 1+8*4, 1+4*4, 1+8*4}
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};
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h->topleft_partition= -1;
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top_xy = mb_xy - (s->mb_stride << MB_FIELD);
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/* Wow, what a mess, why didn't they simplify the interlacing & intra
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* stuff, I can't imagine that these complex rules are worth it. */
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topleft_xy = top_xy - 1;
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topright_xy= top_xy + 1;
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left_xy[LBOT] = left_xy[LTOP] = mb_xy-1;
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h->left_block = left_block_options[0];
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if(FRAME_MBAFF){
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const int left_mb_field_flag = IS_INTERLACED(s->current_picture.f.mb_type[mb_xy - 1]);
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const int curr_mb_field_flag = IS_INTERLACED(mb_type);
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if(s->mb_y&1){
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if (left_mb_field_flag != curr_mb_field_flag) {
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left_xy[LBOT] = left_xy[LTOP] = mb_xy - s->mb_stride - 1;
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if (curr_mb_field_flag) {
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left_xy[LBOT] += s->mb_stride;
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h->left_block = left_block_options[3];
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} else {
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topleft_xy += s->mb_stride;
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// take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
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h->topleft_partition = 0;
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h->left_block = left_block_options[1];
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}
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}
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}else{
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if(curr_mb_field_flag){
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topleft_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy - 1] >> 7) & 1) - 1);
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topright_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy + 1] >> 7) & 1) - 1);
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top_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy ] >> 7) & 1) - 1);
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}
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if (left_mb_field_flag != curr_mb_field_flag) {
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if (curr_mb_field_flag) {
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left_xy[LBOT] += s->mb_stride;
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h->left_block = left_block_options[3];
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} else {
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h->left_block = left_block_options[2];
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}
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}
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}
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}
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h->topleft_mb_xy = topleft_xy;
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h->top_mb_xy = top_xy;
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h->topright_mb_xy= topright_xy;
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h->left_mb_xy[LTOP] = left_xy[LTOP];
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h->left_mb_xy[LBOT] = left_xy[LBOT];
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//FIXME do we need all in the context?
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h->topleft_type = s->current_picture.f.mb_type[topleft_xy];
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h->top_type = s->current_picture.f.mb_type[top_xy];
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h->topright_type = s->current_picture.f.mb_type[topright_xy];
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h->left_type[LTOP] = s->current_picture.f.mb_type[left_xy[LTOP]];
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h->left_type[LBOT] = s->current_picture.f.mb_type[left_xy[LBOT]];
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if(FMO){
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if(h->slice_table[topleft_xy ] != h->slice_num) h->topleft_type = 0;
|
|
if(h->slice_table[top_xy ] != h->slice_num) h->top_type = 0;
|
|
if(h->slice_table[left_xy[LTOP] ] != h->slice_num) h->left_type[LTOP] = h->left_type[LBOT] = 0;
|
|
}else{
|
|
if(h->slice_table[topleft_xy ] != h->slice_num){
|
|
h->topleft_type = 0;
|
|
if(h->slice_table[top_xy ] != h->slice_num) h->top_type = 0;
|
|
if(h->slice_table[left_xy[LTOP] ] != h->slice_num) h->left_type[LTOP] = h->left_type[LBOT] = 0;
|
|
}
|
|
}
|
|
if(h->slice_table[topright_xy] != h->slice_num) h->topright_type= 0;
|
|
}
|
|
|
|
static void fill_decode_caches(H264Context *h, int mb_type){
|
|
MpegEncContext * const s = &h->s;
|
|
int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
|
|
int topleft_type, top_type, topright_type, left_type[LEFT_MBS];
|
|
const uint8_t * left_block= h->left_block;
|
|
int i;
|
|
uint8_t *nnz;
|
|
uint8_t *nnz_cache;
|
|
|
|
topleft_xy = h->topleft_mb_xy;
|
|
top_xy = h->top_mb_xy;
|
|
topright_xy = h->topright_mb_xy;
|
|
left_xy[LTOP] = h->left_mb_xy[LTOP];
|
|
left_xy[LBOT] = h->left_mb_xy[LBOT];
|
|
topleft_type = h->topleft_type;
|
|
top_type = h->top_type;
|
|
topright_type = h->topright_type;
|
|
left_type[LTOP]= h->left_type[LTOP];
|
|
left_type[LBOT]= h->left_type[LBOT];
|
|
|
|
if(!IS_SKIP(mb_type)){
|
|
if(IS_INTRA(mb_type)){
|
|
int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
|
|
h->topleft_samples_available=
|
|
h->top_samples_available=
|
|
h->left_samples_available= 0xFFFF;
|
|
h->topright_samples_available= 0xEEEA;
|
|
|
|
if(!(top_type & type_mask)){
|
|
h->topleft_samples_available= 0xB3FF;
|
|
h->top_samples_available= 0x33FF;
|
|
h->topright_samples_available= 0x26EA;
|
|
}
|
|
if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[LTOP])){
|
|
if(IS_INTERLACED(mb_type)){
|
|
if(!(left_type[LTOP] & type_mask)){
|
|
h->topleft_samples_available&= 0xDFFF;
|
|
h->left_samples_available&= 0x5FFF;
|
|
}
|
|
if(!(left_type[LBOT] & type_mask)){
|
|
h->topleft_samples_available&= 0xFF5F;
|
|
h->left_samples_available&= 0xFF5F;
|
|
}
|
|
}else{
|
|
int left_typei = s->current_picture.f.mb_type[left_xy[LTOP] + s->mb_stride];
|
|
|
|
assert(left_xy[LTOP] == left_xy[LBOT]);
|
|
if(!((left_typei & type_mask) && (left_type[LTOP] & type_mask))){
|
|
h->topleft_samples_available&= 0xDF5F;
|
|
h->left_samples_available&= 0x5F5F;
|
|
}
|
|
}
|
|
}else{
|
|
if(!(left_type[LTOP] & type_mask)){
|
|
h->topleft_samples_available&= 0xDF5F;
|
|
h->left_samples_available&= 0x5F5F;
|
|
}
|
|
}
|
|
|
|
if(!(topleft_type & type_mask))
|
|
h->topleft_samples_available&= 0x7FFF;
|
|
|
|
if(!(topright_type & type_mask))
|
|
h->topright_samples_available&= 0xFBFF;
|
|
|
|
if(IS_INTRA4x4(mb_type)){
|
|
if(IS_INTRA4x4(top_type)){
|
|
AV_COPY32(h->intra4x4_pred_mode_cache+4+8*0, h->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
|
|
}else{
|
|
h->intra4x4_pred_mode_cache[4+8*0]=
|
|
h->intra4x4_pred_mode_cache[5+8*0]=
|
|
h->intra4x4_pred_mode_cache[6+8*0]=
|
|
h->intra4x4_pred_mode_cache[7+8*0]= 2 - 3*!(top_type & type_mask);
|
|
}
|
|
for(i=0; i<2; i++){
|
|
if(IS_INTRA4x4(left_type[LEFT(i)])){
|
|
int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[left_xy[LEFT(i)]];
|
|
h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= mode[6-left_block[0+2*i]];
|
|
h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= mode[6-left_block[1+2*i]];
|
|
}else{
|
|
h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
|
|
h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= 2 - 3*!(left_type[LEFT(i)] & type_mask);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
0 . T T. T T T T
|
|
1 L . .L . . . .
|
|
2 L . .L . . . .
|
|
3 . T TL . . . .
|
|
4 L . .L . . . .
|
|
5 L . .. . . . .
|
|
*/
|
|
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
|
|
nnz_cache = h->non_zero_count_cache;
|
|
if(top_type){
|
|
nnz = h->non_zero_count[top_xy];
|
|
AV_COPY32(&nnz_cache[4+8* 0], &nnz[4*3]);
|
|
if(!s->chroma_y_shift){
|
|
AV_COPY32(&nnz_cache[4+8* 5], &nnz[4* 7]);
|
|
AV_COPY32(&nnz_cache[4+8*10], &nnz[4*11]);
|
|
}else{
|
|
AV_COPY32(&nnz_cache[4+8* 5], &nnz[4* 5]);
|
|
AV_COPY32(&nnz_cache[4+8*10], &nnz[4* 9]);
|
|
}
|
|
}else{
|
|
uint32_t top_empty = CABAC && !IS_INTRA(mb_type) ? 0 : 0x40404040;
|
|
AV_WN32A(&nnz_cache[4+8* 0], top_empty);
|
|
AV_WN32A(&nnz_cache[4+8* 5], top_empty);
|
|
AV_WN32A(&nnz_cache[4+8*10], top_empty);
|
|
}
|
|
|
|
for (i=0; i<2; i++) {
|
|
if(left_type[LEFT(i)]){
|
|
nnz = h->non_zero_count[left_xy[LEFT(i)]];
|
|
nnz_cache[3+8* 1 + 2*8*i]= nnz[left_block[8+0+2*i]];
|
|
nnz_cache[3+8* 2 + 2*8*i]= nnz[left_block[8+1+2*i]];
|
|
if(CHROMA444){
|
|
nnz_cache[3+8* 6 + 2*8*i]= nnz[left_block[8+0+2*i]+4*4];
|
|
nnz_cache[3+8* 7 + 2*8*i]= nnz[left_block[8+1+2*i]+4*4];
|
|
nnz_cache[3+8*11 + 2*8*i]= nnz[left_block[8+0+2*i]+8*4];
|
|
nnz_cache[3+8*12 + 2*8*i]= nnz[left_block[8+1+2*i]+8*4];
|
|
}else if(CHROMA422) {
|
|
nnz_cache[3+8* 6 + 2*8*i]= nnz[left_block[8+0+2*i]-2+4*4];
|
|
nnz_cache[3+8* 7 + 2*8*i]= nnz[left_block[8+1+2*i]-2+4*4];
|
|
nnz_cache[3+8*11 + 2*8*i]= nnz[left_block[8+0+2*i]-2+8*4];
|
|
nnz_cache[3+8*12 + 2*8*i]= nnz[left_block[8+1+2*i]-2+8*4];
|
|
}else{
|
|
nnz_cache[3+8* 6 + 8*i]= nnz[left_block[8+4+2*i]];
|
|
nnz_cache[3+8*11 + 8*i]= nnz[left_block[8+5+2*i]];
|
|
}
|
|
}else{
|
|
nnz_cache[3+8* 1 + 2*8*i]=
|
|
nnz_cache[3+8* 2 + 2*8*i]=
|
|
nnz_cache[3+8* 6 + 2*8*i]=
|
|
nnz_cache[3+8* 7 + 2*8*i]=
|
|
nnz_cache[3+8*11 + 2*8*i]=
|
|
nnz_cache[3+8*12 + 2*8*i]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
|
|
}
|
|
}
|
|
|
|
if( CABAC ) {
|
|
// top_cbp
|
|
if(top_type) {
|
|
h->top_cbp = h->cbp_table[top_xy];
|
|
} else {
|
|
h->top_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
|
|
}
|
|
// left_cbp
|
|
if (left_type[LTOP]) {
|
|
h->left_cbp = (h->cbp_table[left_xy[LTOP]] & 0x7F0)
|
|
| ((h->cbp_table[left_xy[LTOP]]>>(left_block[0]&(~1)))&2)
|
|
| (((h->cbp_table[left_xy[LBOT]]>>(left_block[2]&(~1)))&2) << 2);
|
|
} else {
|
|
h->left_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){
|
|
int list;
|
|
int b_stride = h->b_stride;
|
|
for(list=0; list<h->list_count; list++){
|
|
int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
|
|
int8_t *ref = s->current_picture.f.ref_index[list];
|
|
int16_t (*mv_cache)[2] = &h->mv_cache[list][scan8[0]];
|
|
int16_t (*mv)[2] = s->current_picture.f.motion_val[list];
|
|
if(!USES_LIST(mb_type, list)){
|
|
continue;
|
|
}
|
|
assert(!(IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred));
|
|
|
|
if(USES_LIST(top_type, list)){
|
|
const int b_xy= h->mb2b_xy[top_xy] + 3*b_stride;
|
|
AV_COPY128(mv_cache[0 - 1*8], mv[b_xy + 0]);
|
|
ref_cache[0 - 1*8]=
|
|
ref_cache[1 - 1*8]= ref[4*top_xy + 2];
|
|
ref_cache[2 - 1*8]=
|
|
ref_cache[3 - 1*8]= ref[4*top_xy + 3];
|
|
}else{
|
|
AV_ZERO128(mv_cache[0 - 1*8]);
|
|
AV_WN32A(&ref_cache[0 - 1*8], ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101u);
|
|
}
|
|
|
|
if(mb_type & (MB_TYPE_16x8|MB_TYPE_8x8)){
|
|
for(i=0; i<2; i++){
|
|
int cache_idx = -1 + i*2*8;
|
|
if(USES_LIST(left_type[LEFT(i)], list)){
|
|
const int b_xy= h->mb2b_xy[left_xy[LEFT(i)]] + 3;
|
|
const int b8_xy= 4*left_xy[LEFT(i)] + 1;
|
|
AV_COPY32(mv_cache[cache_idx ], mv[b_xy + b_stride*left_block[0+i*2]]);
|
|
AV_COPY32(mv_cache[cache_idx+8], mv[b_xy + b_stride*left_block[1+i*2]]);
|
|
ref_cache[cache_idx ]= ref[b8_xy + (left_block[0+i*2]&~1)];
|
|
ref_cache[cache_idx+8]= ref[b8_xy + (left_block[1+i*2]&~1)];
|
|
}else{
|
|
AV_ZERO32(mv_cache[cache_idx ]);
|
|
AV_ZERO32(mv_cache[cache_idx+8]);
|
|
ref_cache[cache_idx ]=
|
|
ref_cache[cache_idx+8]= (left_type[LEFT(i)]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
}else{
|
|
if(USES_LIST(left_type[LTOP], list)){
|
|
const int b_xy= h->mb2b_xy[left_xy[LTOP]] + 3;
|
|
const int b8_xy= 4*left_xy[LTOP] + 1;
|
|
AV_COPY32(mv_cache[-1], mv[b_xy + b_stride*left_block[0]]);
|
|
ref_cache[-1]= ref[b8_xy + (left_block[0]&~1)];
|
|
}else{
|
|
AV_ZERO32(mv_cache[-1]);
|
|
ref_cache[-1]= left_type[LTOP] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
if(USES_LIST(topright_type, list)){
|
|
const int b_xy= h->mb2b_xy[topright_xy] + 3*b_stride;
|
|
AV_COPY32(mv_cache[4 - 1*8], mv[b_xy]);
|
|
ref_cache[4 - 1*8]= ref[4*topright_xy + 2];
|
|
}else{
|
|
AV_ZERO32(mv_cache[4 - 1*8]);
|
|
ref_cache[4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
|
|
}
|
|
if(ref_cache[4 - 1*8] < 0){
|
|
if(USES_LIST(topleft_type, list)){
|
|
const int b_xy = h->mb2b_xy[topleft_xy] + 3 + b_stride + (h->topleft_partition & 2*b_stride);
|
|
const int b8_xy= 4*topleft_xy + 1 + (h->topleft_partition & 2);
|
|
AV_COPY32(mv_cache[-1 - 1*8], mv[b_xy]);
|
|
ref_cache[-1 - 1*8]= ref[b8_xy];
|
|
}else{
|
|
AV_ZERO32(mv_cache[-1 - 1*8]);
|
|
ref_cache[-1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
if((mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2)) && !FRAME_MBAFF)
|
|
continue;
|
|
|
|
if(!(mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2))){
|
|
uint8_t (*mvd_cache)[2] = &h->mvd_cache[list][scan8[0]];
|
|
uint8_t (*mvd)[2] = h->mvd_table[list];
|
|
ref_cache[2+8*0] =
|
|
ref_cache[2+8*2] = PART_NOT_AVAILABLE;
|
|
AV_ZERO32(mv_cache[2+8*0]);
|
|
AV_ZERO32(mv_cache[2+8*2]);
|
|
|
|
if( CABAC ) {
|
|
if(USES_LIST(top_type, list)){
|
|
const int b_xy= h->mb2br_xy[top_xy];
|
|
AV_COPY64(mvd_cache[0 - 1*8], mvd[b_xy + 0]);
|
|
}else{
|
|
AV_ZERO64(mvd_cache[0 - 1*8]);
|
|
}
|
|
if(USES_LIST(left_type[LTOP], list)){
|
|
const int b_xy= h->mb2br_xy[left_xy[LTOP]] + 6;
|
|
AV_COPY16(mvd_cache[-1 + 0*8], mvd[b_xy - left_block[0]]);
|
|
AV_COPY16(mvd_cache[-1 + 1*8], mvd[b_xy - left_block[1]]);
|
|
}else{
|
|
AV_ZERO16(mvd_cache[-1 + 0*8]);
|
|
AV_ZERO16(mvd_cache[-1 + 1*8]);
|
|
}
|
|
if(USES_LIST(left_type[LBOT], list)){
|
|
const int b_xy= h->mb2br_xy[left_xy[LBOT]] + 6;
|
|
AV_COPY16(mvd_cache[-1 + 2*8], mvd[b_xy - left_block[2]]);
|
|
AV_COPY16(mvd_cache[-1 + 3*8], mvd[b_xy - left_block[3]]);
|
|
}else{
|
|
AV_ZERO16(mvd_cache[-1 + 2*8]);
|
|
AV_ZERO16(mvd_cache[-1 + 3*8]);
|
|
}
|
|
AV_ZERO16(mvd_cache[2+8*0]);
|
|
AV_ZERO16(mvd_cache[2+8*2]);
|
|
if(h->slice_type_nos == AV_PICTURE_TYPE_B){
|
|
uint8_t *direct_cache = &h->direct_cache[scan8[0]];
|
|
uint8_t *direct_table = h->direct_table;
|
|
fill_rectangle(direct_cache, 4, 4, 8, MB_TYPE_16x16>>1, 1);
|
|
|
|
if(IS_DIRECT(top_type)){
|
|
AV_WN32A(&direct_cache[-1*8], 0x01010101u*(MB_TYPE_DIRECT2>>1));
|
|
}else if(IS_8X8(top_type)){
|
|
int b8_xy = 4*top_xy;
|
|
direct_cache[0 - 1*8]= direct_table[b8_xy + 2];
|
|
direct_cache[2 - 1*8]= direct_table[b8_xy + 3];
|
|
}else{
|
|
AV_WN32A(&direct_cache[-1*8], 0x01010101*(MB_TYPE_16x16>>1));
|
|
}
|
|
|
|
if(IS_DIRECT(left_type[LTOP]))
|
|
direct_cache[-1 + 0*8]= MB_TYPE_DIRECT2>>1;
|
|
else if(IS_8X8(left_type[LTOP]))
|
|
direct_cache[-1 + 0*8]= direct_table[4*left_xy[LTOP] + 1 + (left_block[0]&~1)];
|
|
else
|
|
direct_cache[-1 + 0*8]= MB_TYPE_16x16>>1;
|
|
|
|
if(IS_DIRECT(left_type[LBOT]))
|
|
direct_cache[-1 + 2*8]= MB_TYPE_DIRECT2>>1;
|
|
else if(IS_8X8(left_type[LBOT]))
|
|
direct_cache[-1 + 2*8]= direct_table[4*left_xy[LBOT] + 1 + (left_block[2]&~1)];
|
|
else
|
|
direct_cache[-1 + 2*8]= MB_TYPE_16x16>>1;
|
|
}
|
|
}
|
|
}
|
|
if(FRAME_MBAFF){
|
|
#define MAP_MVS\
|
|
MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
|
|
MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
|
|
MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
|
|
MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
|
|
MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
|
|
MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
|
|
MAP_F2F(scan8[0] - 1 + 0*8, left_type[LTOP])\
|
|
MAP_F2F(scan8[0] - 1 + 1*8, left_type[LTOP])\
|
|
MAP_F2F(scan8[0] - 1 + 2*8, left_type[LBOT])\
|
|
MAP_F2F(scan8[0] - 1 + 3*8, left_type[LBOT])
|
|
if(MB_FIELD){
|
|
#define MAP_F2F(idx, mb_type)\
|
|
if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
|
|
h->ref_cache[list][idx] <<= 1;\
|
|
h->mv_cache[list][idx][1] /= 2;\
|
|
h->mvd_cache[list][idx][1] >>=1;\
|
|
}
|
|
MAP_MVS
|
|
#undef MAP_F2F
|
|
}else{
|
|
#define MAP_F2F(idx, mb_type)\
|
|
if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
|
|
h->ref_cache[list][idx] >>= 1;\
|
|
h->mv_cache[list][idx][1] <<= 1;\
|
|
h->mvd_cache[list][idx][1] <<= 1;\
|
|
}
|
|
MAP_MVS
|
|
#undef MAP_F2F
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[LTOP]);
|
|
}
|
|
|
|
/**
|
|
* decodes a P_SKIP or B_SKIP macroblock
|
|
*/
|
|
static void av_unused decode_mb_skip(H264Context *h){
|
|
MpegEncContext * const s = &h->s;
|
|
const int mb_xy= h->mb_xy;
|
|
int mb_type=0;
|
|
|
|
memset(h->non_zero_count[mb_xy], 0, 48);
|
|
|
|
if(MB_FIELD)
|
|
mb_type|= MB_TYPE_INTERLACED;
|
|
|
|
if( h->slice_type_nos == AV_PICTURE_TYPE_B )
|
|
{
|
|
// just for fill_caches. pred_direct_motion will set the real mb_type
|
|
mb_type|= MB_TYPE_L0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
|
|
if(h->direct_spatial_mv_pred){
|
|
fill_decode_neighbors(h, mb_type);
|
|
fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
|
|
}
|
|
ff_h264_pred_direct_motion(h, &mb_type);
|
|
mb_type|= MB_TYPE_SKIP;
|
|
}
|
|
else
|
|
{
|
|
mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
|
|
|
|
fill_decode_neighbors(h, mb_type);
|
|
pred_pskip_motion(h);
|
|
}
|
|
|
|
write_back_motion(h, mb_type);
|
|
s->current_picture.f.mb_type[mb_xy] = mb_type;
|
|
s->current_picture.f.qscale_table[mb_xy] = s->qscale;
|
|
h->slice_table[ mb_xy ]= h->slice_num;
|
|
h->prev_mb_skipped= 1;
|
|
}
|
|
|
|
#endif /* AVCODEC_H264_MVPRED_H */
|