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Passing an explicit filename to this command is only necessary if the documentation in the @file block refers to a file different from the one the block resides in. Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
716 lines
25 KiB
C
716 lines
25 KiB
C
/*
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* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
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* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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* Chinese AVS video (AVS1-P2, JiZhun profile) decoder
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* @author Stefan Gehrer <stefan.gehrer@gmx.de>
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*/
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#include "avcodec.h"
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#include "get_bits.h"
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#include "golomb.h"
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#include "mathops.h"
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#include "cavs.h"
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#include "cavsdata.h"
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/*****************************************************************************
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*
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* in-loop deblocking filter
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*
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****************************************************************************/
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static inline int get_bs(cavs_vector *mvP, cavs_vector *mvQ, int b) {
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if((mvP->ref == REF_INTRA) || (mvQ->ref == REF_INTRA))
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return 2;
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if( (abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4) )
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return 1;
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if(b){
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mvP += MV_BWD_OFFS;
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mvQ += MV_BWD_OFFS;
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if( (abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4) )
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return 1;
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}else{
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if(mvP->ref != mvQ->ref)
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return 1;
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}
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return 0;
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}
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#define SET_PARAMS \
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alpha = alpha_tab[av_clip(qp_avg + h->alpha_offset,0,63)]; \
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beta = beta_tab[av_clip(qp_avg + h->beta_offset, 0,63)]; \
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tc = tc_tab[av_clip(qp_avg + h->alpha_offset,0,63)];
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/**
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* in-loop deblocking filter for a single macroblock
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*
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* boundary strength (bs) mapping:
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*
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* --4---5--
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* 0 2 |
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* | 6 | 7 |
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* 1 3 |
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* ---------
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*
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*/
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void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type) {
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uint8_t bs[8];
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int qp_avg, alpha, beta, tc;
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int i;
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/* save un-deblocked lines */
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h->topleft_border_y = h->top_border_y[h->mbx*16+15];
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h->topleft_border_u = h->top_border_u[h->mbx*10+8];
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h->topleft_border_v = h->top_border_v[h->mbx*10+8];
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memcpy(&h->top_border_y[h->mbx*16], h->cy + 15* h->l_stride,16);
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memcpy(&h->top_border_u[h->mbx*10+1], h->cu + 7* h->c_stride,8);
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memcpy(&h->top_border_v[h->mbx*10+1], h->cv + 7* h->c_stride,8);
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for(i=0;i<8;i++) {
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h->left_border_y[i*2+1] = *(h->cy + 15 + (i*2+0)*h->l_stride);
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h->left_border_y[i*2+2] = *(h->cy + 15 + (i*2+1)*h->l_stride);
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h->left_border_u[i+1] = *(h->cu + 7 + i*h->c_stride);
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h->left_border_v[i+1] = *(h->cv + 7 + i*h->c_stride);
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}
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if(!h->loop_filter_disable) {
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/* determine bs */
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if(mb_type == I_8X8)
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memset(bs,2,8);
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else{
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memset(bs,0,8);
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if(ff_cavs_partition_flags[mb_type] & SPLITV){
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bs[2] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X1], mb_type > P_8X8);
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bs[3] = get_bs(&h->mv[MV_FWD_X2], &h->mv[MV_FWD_X3], mb_type > P_8X8);
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}
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if(ff_cavs_partition_flags[mb_type] & SPLITH){
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bs[6] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X2], mb_type > P_8X8);
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bs[7] = get_bs(&h->mv[MV_FWD_X1], &h->mv[MV_FWD_X3], mb_type > P_8X8);
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}
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bs[0] = get_bs(&h->mv[MV_FWD_A1], &h->mv[MV_FWD_X0], mb_type > P_8X8);
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bs[1] = get_bs(&h->mv[MV_FWD_A3], &h->mv[MV_FWD_X2], mb_type > P_8X8);
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bs[4] = get_bs(&h->mv[MV_FWD_B2], &h->mv[MV_FWD_X0], mb_type > P_8X8);
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bs[5] = get_bs(&h->mv[MV_FWD_B3], &h->mv[MV_FWD_X1], mb_type > P_8X8);
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}
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if(AV_RN64(bs)) {
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if(h->flags & A_AVAIL) {
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qp_avg = (h->qp + h->left_qp + 1) >> 1;
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SET_PARAMS;
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h->s.dsp.cavs_filter_lv(h->cy,h->l_stride,alpha,beta,tc,bs[0],bs[1]);
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h->s.dsp.cavs_filter_cv(h->cu,h->c_stride,alpha,beta,tc,bs[0],bs[1]);
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h->s.dsp.cavs_filter_cv(h->cv,h->c_stride,alpha,beta,tc,bs[0],bs[1]);
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}
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qp_avg = h->qp;
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SET_PARAMS;
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h->s.dsp.cavs_filter_lv(h->cy + 8,h->l_stride,alpha,beta,tc,bs[2],bs[3]);
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h->s.dsp.cavs_filter_lh(h->cy + 8*h->l_stride,h->l_stride,alpha,beta,tc,
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bs[6],bs[7]);
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if(h->flags & B_AVAIL) {
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qp_avg = (h->qp + h->top_qp[h->mbx] + 1) >> 1;
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SET_PARAMS;
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h->s.dsp.cavs_filter_lh(h->cy,h->l_stride,alpha,beta,tc,bs[4],bs[5]);
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h->s.dsp.cavs_filter_ch(h->cu,h->c_stride,alpha,beta,tc,bs[4],bs[5]);
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h->s.dsp.cavs_filter_ch(h->cv,h->c_stride,alpha,beta,tc,bs[4],bs[5]);
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}
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}
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}
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h->left_qp = h->qp;
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h->top_qp[h->mbx] = h->qp;
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}
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#undef SET_PARAMS
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/*****************************************************************************
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*
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* spatial intra prediction
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*
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****************************************************************************/
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void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top,
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uint8_t **left, int block) {
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int i;
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switch(block) {
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case 0:
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*left = h->left_border_y;
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h->left_border_y[0] = h->left_border_y[1];
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memset(&h->left_border_y[17],h->left_border_y[16],9);
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memcpy(&top[1],&h->top_border_y[h->mbx*16],16);
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top[17] = top[16];
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top[0] = top[1];
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if((h->flags & A_AVAIL) && (h->flags & B_AVAIL))
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h->left_border_y[0] = top[0] = h->topleft_border_y;
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break;
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case 1:
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*left = h->intern_border_y;
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for(i=0;i<8;i++)
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h->intern_border_y[i+1] = *(h->cy + 7 + i*h->l_stride);
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memset(&h->intern_border_y[9],h->intern_border_y[8],9);
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h->intern_border_y[0] = h->intern_border_y[1];
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memcpy(&top[1],&h->top_border_y[h->mbx*16+8],8);
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if(h->flags & C_AVAIL)
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memcpy(&top[9],&h->top_border_y[(h->mbx + 1)*16],8);
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else
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memset(&top[9],top[8],9);
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top[17] = top[16];
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top[0] = top[1];
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if(h->flags & B_AVAIL)
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h->intern_border_y[0] = top[0] = h->top_border_y[h->mbx*16+7];
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break;
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case 2:
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*left = &h->left_border_y[8];
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memcpy(&top[1],h->cy + 7*h->l_stride,16);
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top[17] = top[16];
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top[0] = top[1];
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if(h->flags & A_AVAIL)
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top[0] = h->left_border_y[8];
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break;
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case 3:
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*left = &h->intern_border_y[8];
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for(i=0;i<8;i++)
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h->intern_border_y[i+9] = *(h->cy + 7 + (i+8)*h->l_stride);
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memset(&h->intern_border_y[17],h->intern_border_y[16],9);
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memcpy(&top[0],h->cy + 7 + 7*h->l_stride,9);
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memset(&top[9],top[8],9);
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break;
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}
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}
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void ff_cavs_load_intra_pred_chroma(AVSContext *h) {
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/* extend borders by one pixel */
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h->left_border_u[9] = h->left_border_u[8];
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h->left_border_v[9] = h->left_border_v[8];
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h->top_border_u[h->mbx*10+9] = h->top_border_u[h->mbx*10+8];
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h->top_border_v[h->mbx*10+9] = h->top_border_v[h->mbx*10+8];
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if(h->mbx && h->mby) {
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h->top_border_u[h->mbx*10] = h->left_border_u[0] = h->topleft_border_u;
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h->top_border_v[h->mbx*10] = h->left_border_v[0] = h->topleft_border_v;
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} else {
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h->left_border_u[0] = h->left_border_u[1];
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h->left_border_v[0] = h->left_border_v[1];
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h->top_border_u[h->mbx*10] = h->top_border_u[h->mbx*10+1];
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h->top_border_v[h->mbx*10] = h->top_border_v[h->mbx*10+1];
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}
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}
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static void intra_pred_vert(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int y;
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uint64_t a = AV_RN64(&top[1]);
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for(y=0;y<8;y++) {
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*((uint64_t *)(d+y*stride)) = a;
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}
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}
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static void intra_pred_horiz(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int y;
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uint64_t a;
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for(y=0;y<8;y++) {
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a = left[y+1] * 0x0101010101010101ULL;
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*((uint64_t *)(d+y*stride)) = a;
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}
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}
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static void intra_pred_dc_128(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int y;
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uint64_t a = 0x8080808080808080ULL;
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for(y=0;y<8;y++)
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*((uint64_t *)(d+y*stride)) = a;
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}
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static void intra_pred_plane(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y,ia;
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int ih = 0;
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int iv = 0;
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uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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for(x=0; x<4; x++) {
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ih += (x+1)*(top[5+x]-top[3-x]);
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iv += (x+1)*(left[5+x]-left[3-x]);
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}
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ia = (top[8]+left[8])<<4;
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ih = (17*ih+16)>>5;
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iv = (17*iv+16)>>5;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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d[y*stride+x] = cm[(ia+(x-3)*ih+(y-3)*iv+16)>>5];
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}
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#define LOWPASS(ARRAY,INDEX) \
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(( ARRAY[(INDEX)-1] + 2*ARRAY[(INDEX)] + ARRAY[(INDEX)+1] + 2) >> 2)
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static void intra_pred_lp(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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d[y*stride+x] = (LOWPASS(top,x+1) + LOWPASS(left,y+1)) >> 1;
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}
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static void intra_pred_down_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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d[y*stride+x] = (LOWPASS(top,x+y+2) + LOWPASS(left,x+y+2)) >> 1;
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}
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static void intra_pred_down_right(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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if(x==y)
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d[y*stride+x] = (left[1]+2*top[0]+top[1]+2)>>2;
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else if(x>y)
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d[y*stride+x] = LOWPASS(top,x-y);
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else
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d[y*stride+x] = LOWPASS(left,y-x);
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}
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static void intra_pred_lp_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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d[y*stride+x] = LOWPASS(left,y+1);
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}
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static void intra_pred_lp_top(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
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int x,y;
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for(y=0; y<8; y++)
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for(x=0; x<8; x++)
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d[y*stride+x] = LOWPASS(top,x+1);
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}
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#undef LOWPASS
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void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv) {
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/* save pred modes before they get modified */
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h->pred_mode_Y[3] = h->pred_mode_Y[5];
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h->pred_mode_Y[6] = h->pred_mode_Y[8];
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h->top_pred_Y[h->mbx*2+0] = h->pred_mode_Y[7];
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h->top_pred_Y[h->mbx*2+1] = h->pred_mode_Y[8];
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/* modify pred modes according to availability of neighbour samples */
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if(!(h->flags & A_AVAIL)) {
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modify_pred(ff_left_modifier_l, &h->pred_mode_Y[4] );
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modify_pred(ff_left_modifier_l, &h->pred_mode_Y[7] );
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modify_pred(ff_left_modifier_c, pred_mode_uv );
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}
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if(!(h->flags & B_AVAIL)) {
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modify_pred(ff_top_modifier_l, &h->pred_mode_Y[4] );
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modify_pred(ff_top_modifier_l, &h->pred_mode_Y[5] );
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modify_pred(ff_top_modifier_c, pred_mode_uv );
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}
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}
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/*****************************************************************************
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*
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* motion compensation
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*
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****************************************************************************/
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static inline void mc_dir_part(AVSContext *h,Picture *pic,int square,
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int chroma_height,int delta,int list,uint8_t *dest_y,
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uint8_t *dest_cb,uint8_t *dest_cr,int src_x_offset,
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int src_y_offset,qpel_mc_func *qpix_op,
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h264_chroma_mc_func chroma_op,cavs_vector *mv){
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MpegEncContext * const s = &h->s;
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const int mx= mv->x + src_x_offset*8;
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const int my= mv->y + src_y_offset*8;
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const int luma_xy= (mx&3) + ((my&3)<<2);
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uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->l_stride;
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uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->c_stride;
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uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->c_stride;
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int extra_width= 0; //(s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
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int extra_height= extra_width;
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int emu=0;
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const int full_mx= mx>>2;
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const int full_my= my>>2;
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const int pic_width = 16*h->mb_width;
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const int pic_height = 16*h->mb_height;
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if(!pic->data[0])
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return;
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if(mx&7) extra_width -= 3;
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if(my&7) extra_height -= 3;
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if( full_mx < 0-extra_width
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|| full_my < 0-extra_height
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|| full_mx + 16/*FIXME*/ > pic_width + extra_width
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|| full_my + 16/*FIXME*/ > pic_height + extra_height){
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ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->l_stride, h->l_stride,
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16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
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src_y= s->edge_emu_buffer + 2 + 2*h->l_stride;
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emu=1;
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}
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qpix_op[luma_xy](dest_y, src_y, h->l_stride); //FIXME try variable height perhaps?
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if(!square){
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qpix_op[luma_xy](dest_y + delta, src_y + delta, h->l_stride);
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}
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if(emu){
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ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->c_stride,
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9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
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src_cb= s->edge_emu_buffer;
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}
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chroma_op(dest_cb, src_cb, h->c_stride, chroma_height, mx&7, my&7);
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if(emu){
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ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->c_stride,
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9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
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src_cr= s->edge_emu_buffer;
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}
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chroma_op(dest_cr, src_cr, h->c_stride, chroma_height, mx&7, my&7);
|
|
}
|
|
|
|
static inline void mc_part_std(AVSContext *h,int square,int chroma_height,int delta,
|
|
uint8_t *dest_y,uint8_t *dest_cb,uint8_t *dest_cr,
|
|
int x_offset, int y_offset,qpel_mc_func *qpix_put,
|
|
h264_chroma_mc_func chroma_put,qpel_mc_func *qpix_avg,
|
|
h264_chroma_mc_func chroma_avg, cavs_vector *mv){
|
|
qpel_mc_func *qpix_op= qpix_put;
|
|
h264_chroma_mc_func chroma_op= chroma_put;
|
|
|
|
dest_y += 2*x_offset + 2*y_offset*h->l_stride;
|
|
dest_cb += x_offset + y_offset*h->c_stride;
|
|
dest_cr += x_offset + y_offset*h->c_stride;
|
|
x_offset += 8*h->mbx;
|
|
y_offset += 8*h->mby;
|
|
|
|
if(mv->ref >= 0){
|
|
Picture *ref= &h->DPB[mv->ref];
|
|
mc_dir_part(h, ref, square, chroma_height, delta, 0,
|
|
dest_y, dest_cb, dest_cr, x_offset, y_offset,
|
|
qpix_op, chroma_op, mv);
|
|
|
|
qpix_op= qpix_avg;
|
|
chroma_op= chroma_avg;
|
|
}
|
|
|
|
if((mv+MV_BWD_OFFS)->ref >= 0){
|
|
Picture *ref= &h->DPB[0];
|
|
mc_dir_part(h, ref, square, chroma_height, delta, 1,
|
|
dest_y, dest_cb, dest_cr, x_offset, y_offset,
|
|
qpix_op, chroma_op, mv+MV_BWD_OFFS);
|
|
}
|
|
}
|
|
|
|
void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type) {
|
|
if(ff_cavs_partition_flags[mb_type] == 0){ // 16x16
|
|
mc_part_std(h, 1, 8, 0, h->cy, h->cu, h->cv, 0, 0,
|
|
h->s.dsp.put_cavs_qpel_pixels_tab[0],
|
|
h->s.dsp.put_h264_chroma_pixels_tab[0],
|
|
h->s.dsp.avg_cavs_qpel_pixels_tab[0],
|
|
h->s.dsp.avg_h264_chroma_pixels_tab[0],&h->mv[MV_FWD_X0]);
|
|
}else{
|
|
mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 0, 0,
|
|
h->s.dsp.put_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.put_h264_chroma_pixels_tab[1],
|
|
h->s.dsp.avg_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X0]);
|
|
mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 4, 0,
|
|
h->s.dsp.put_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.put_h264_chroma_pixels_tab[1],
|
|
h->s.dsp.avg_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X1]);
|
|
mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 0, 4,
|
|
h->s.dsp.put_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.put_h264_chroma_pixels_tab[1],
|
|
h->s.dsp.avg_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X2]);
|
|
mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 4, 4,
|
|
h->s.dsp.put_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.put_h264_chroma_pixels_tab[1],
|
|
h->s.dsp.avg_cavs_qpel_pixels_tab[1],
|
|
h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X3]);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* motion vector prediction
|
|
*
|
|
****************************************************************************/
|
|
|
|
static inline void scale_mv(AVSContext *h, int *d_x, int *d_y, cavs_vector *src, int distp) {
|
|
int den = h->scale_den[src->ref];
|
|
|
|
*d_x = (src->x*distp*den + 256 + (src->x>>31)) >> 9;
|
|
*d_y = (src->y*distp*den + 256 + (src->y>>31)) >> 9;
|
|
}
|
|
|
|
static inline void mv_pred_median(AVSContext *h, cavs_vector *mvP,
|
|
cavs_vector *mvA, cavs_vector *mvB, cavs_vector *mvC) {
|
|
int ax, ay, bx, by, cx, cy;
|
|
int len_ab, len_bc, len_ca, len_mid;
|
|
|
|
/* scale candidates according to their temporal span */
|
|
scale_mv(h, &ax, &ay, mvA, mvP->dist);
|
|
scale_mv(h, &bx, &by, mvB, mvP->dist);
|
|
scale_mv(h, &cx, &cy, mvC, mvP->dist);
|
|
/* find the geometrical median of the three candidates */
|
|
len_ab = abs(ax - bx) + abs(ay - by);
|
|
len_bc = abs(bx - cx) + abs(by - cy);
|
|
len_ca = abs(cx - ax) + abs(cy - ay);
|
|
len_mid = mid_pred(len_ab, len_bc, len_ca);
|
|
if(len_mid == len_ab) {
|
|
mvP->x = cx;
|
|
mvP->y = cy;
|
|
} else if(len_mid == len_bc) {
|
|
mvP->x = ax;
|
|
mvP->y = ay;
|
|
} else {
|
|
mvP->x = bx;
|
|
mvP->y = by;
|
|
}
|
|
}
|
|
|
|
void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
|
|
enum cavs_mv_pred mode, enum cavs_block size, int ref) {
|
|
cavs_vector *mvP = &h->mv[nP];
|
|
cavs_vector *mvA = &h->mv[nP-1];
|
|
cavs_vector *mvB = &h->mv[nP-4];
|
|
cavs_vector *mvC = &h->mv[nC];
|
|
const cavs_vector *mvP2 = NULL;
|
|
|
|
mvP->ref = ref;
|
|
mvP->dist = h->dist[mvP->ref];
|
|
if(mvC->ref == NOT_AVAIL)
|
|
mvC = &h->mv[nP-5]; // set to top-left (mvD)
|
|
if((mode == MV_PRED_PSKIP) &&
|
|
((mvA->ref == NOT_AVAIL) || (mvB->ref == NOT_AVAIL) ||
|
|
((mvA->x | mvA->y | mvA->ref) == 0) ||
|
|
((mvB->x | mvB->y | mvB->ref) == 0) )) {
|
|
mvP2 = &ff_cavs_un_mv;
|
|
/* if there is only one suitable candidate, take it */
|
|
} else if((mvA->ref >= 0) && (mvB->ref < 0) && (mvC->ref < 0)) {
|
|
mvP2= mvA;
|
|
} else if((mvA->ref < 0) && (mvB->ref >= 0) && (mvC->ref < 0)) {
|
|
mvP2= mvB;
|
|
} else if((mvA->ref < 0) && (mvB->ref < 0) && (mvC->ref >= 0)) {
|
|
mvP2= mvC;
|
|
} else if(mode == MV_PRED_LEFT && mvA->ref == ref){
|
|
mvP2= mvA;
|
|
} else if(mode == MV_PRED_TOP && mvB->ref == ref){
|
|
mvP2= mvB;
|
|
} else if(mode == MV_PRED_TOPRIGHT && mvC->ref == ref){
|
|
mvP2= mvC;
|
|
}
|
|
if(mvP2){
|
|
mvP->x = mvP2->x;
|
|
mvP->y = mvP2->y;
|
|
}else
|
|
mv_pred_median(h, mvP, mvA, mvB, mvC);
|
|
|
|
if(mode < MV_PRED_PSKIP) {
|
|
mvP->x += get_se_golomb(&h->s.gb);
|
|
mvP->y += get_se_golomb(&h->s.gb);
|
|
}
|
|
set_mvs(mvP,size);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* macroblock level
|
|
*
|
|
****************************************************************************/
|
|
|
|
/**
|
|
* initialise predictors for motion vectors and intra prediction
|
|
*/
|
|
void ff_cavs_init_mb(AVSContext *h) {
|
|
int i;
|
|
|
|
/* copy predictors from top line (MB B and C) into cache */
|
|
for(i=0;i<3;i++) {
|
|
h->mv[MV_FWD_B2+i] = h->top_mv[0][h->mbx*2+i];
|
|
h->mv[MV_BWD_B2+i] = h->top_mv[1][h->mbx*2+i];
|
|
}
|
|
h->pred_mode_Y[1] = h->top_pred_Y[h->mbx*2+0];
|
|
h->pred_mode_Y[2] = h->top_pred_Y[h->mbx*2+1];
|
|
/* clear top predictors if MB B is not available */
|
|
if(!(h->flags & B_AVAIL)) {
|
|
h->mv[MV_FWD_B2] = ff_cavs_un_mv;
|
|
h->mv[MV_FWD_B3] = ff_cavs_un_mv;
|
|
h->mv[MV_BWD_B2] = ff_cavs_un_mv;
|
|
h->mv[MV_BWD_B3] = ff_cavs_un_mv;
|
|
h->pred_mode_Y[1] = h->pred_mode_Y[2] = NOT_AVAIL;
|
|
h->flags &= ~(C_AVAIL|D_AVAIL);
|
|
} else if(h->mbx) {
|
|
h->flags |= D_AVAIL;
|
|
}
|
|
if(h->mbx == h->mb_width-1) //MB C not available
|
|
h->flags &= ~C_AVAIL;
|
|
/* clear top-right predictors if MB C is not available */
|
|
if(!(h->flags & C_AVAIL)) {
|
|
h->mv[MV_FWD_C2] = ff_cavs_un_mv;
|
|
h->mv[MV_BWD_C2] = ff_cavs_un_mv;
|
|
}
|
|
/* clear top-left predictors if MB D is not available */
|
|
if(!(h->flags & D_AVAIL)) {
|
|
h->mv[MV_FWD_D3] = ff_cavs_un_mv;
|
|
h->mv[MV_BWD_D3] = ff_cavs_un_mv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* save predictors for later macroblocks and increase
|
|
* macroblock address
|
|
* @return 0 if end of frame is reached, 1 otherwise
|
|
*/
|
|
int ff_cavs_next_mb(AVSContext *h) {
|
|
int i;
|
|
|
|
h->flags |= A_AVAIL;
|
|
h->cy += 16;
|
|
h->cu += 8;
|
|
h->cv += 8;
|
|
/* copy mvs as predictors to the left */
|
|
for(i=0;i<=20;i+=4)
|
|
h->mv[i] = h->mv[i+2];
|
|
/* copy bottom mvs from cache to top line */
|
|
h->top_mv[0][h->mbx*2+0] = h->mv[MV_FWD_X2];
|
|
h->top_mv[0][h->mbx*2+1] = h->mv[MV_FWD_X3];
|
|
h->top_mv[1][h->mbx*2+0] = h->mv[MV_BWD_X2];
|
|
h->top_mv[1][h->mbx*2+1] = h->mv[MV_BWD_X3];
|
|
/* next MB address */
|
|
h->mbidx++;
|
|
h->mbx++;
|
|
if(h->mbx == h->mb_width) { //new mb line
|
|
h->flags = B_AVAIL|C_AVAIL;
|
|
/* clear left pred_modes */
|
|
h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
|
|
/* clear left mv predictors */
|
|
for(i=0;i<=20;i+=4)
|
|
h->mv[i] = ff_cavs_un_mv;
|
|
h->mbx = 0;
|
|
h->mby++;
|
|
/* re-calculate sample pointers */
|
|
h->cy = h->picture.data[0] + h->mby*16*h->l_stride;
|
|
h->cu = h->picture.data[1] + h->mby*8*h->c_stride;
|
|
h->cv = h->picture.data[2] + h->mby*8*h->c_stride;
|
|
if(h->mby == h->mb_height) { //frame end
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* frame level
|
|
*
|
|
****************************************************************************/
|
|
|
|
void ff_cavs_init_pic(AVSContext *h) {
|
|
int i;
|
|
|
|
/* clear some predictors */
|
|
for(i=0;i<=20;i+=4)
|
|
h->mv[i] = ff_cavs_un_mv;
|
|
h->mv[MV_BWD_X0] = ff_cavs_dir_mv;
|
|
set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
|
|
h->mv[MV_FWD_X0] = ff_cavs_dir_mv;
|
|
set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
|
|
h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
|
|
h->cy = h->picture.data[0];
|
|
h->cu = h->picture.data[1];
|
|
h->cv = h->picture.data[2];
|
|
h->l_stride = h->picture.linesize[0];
|
|
h->c_stride = h->picture.linesize[1];
|
|
h->luma_scan[2] = 8*h->l_stride;
|
|
h->luma_scan[3] = 8*h->l_stride+8;
|
|
h->mbx = h->mby = h->mbidx = 0;
|
|
h->flags = 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* headers and interface
|
|
*
|
|
****************************************************************************/
|
|
|
|
/**
|
|
* some predictions require data from the top-neighbouring macroblock.
|
|
* this data has to be stored for one complete row of macroblocks
|
|
* and this storage space is allocated here
|
|
*/
|
|
void ff_cavs_init_top_lines(AVSContext *h) {
|
|
/* alloc top line of predictors */
|
|
h->top_qp = av_malloc( h->mb_width);
|
|
h->top_mv[0] = av_malloc((h->mb_width*2+1)*sizeof(cavs_vector));
|
|
h->top_mv[1] = av_malloc((h->mb_width*2+1)*sizeof(cavs_vector));
|
|
h->top_pred_Y = av_malloc( h->mb_width*2*sizeof(*h->top_pred_Y));
|
|
h->top_border_y = av_malloc((h->mb_width+1)*16);
|
|
h->top_border_u = av_malloc((h->mb_width)*10);
|
|
h->top_border_v = av_malloc((h->mb_width)*10);
|
|
|
|
/* alloc space for co-located MVs and types */
|
|
h->col_mv = av_malloc( h->mb_width*h->mb_height*4*sizeof(cavs_vector));
|
|
h->col_type_base = av_malloc(h->mb_width*h->mb_height);
|
|
h->block = av_mallocz(64*sizeof(DCTELEM));
|
|
}
|
|
|
|
av_cold int ff_cavs_init(AVCodecContext *avctx) {
|
|
AVSContext *h = avctx->priv_data;
|
|
MpegEncContext * const s = &h->s;
|
|
|
|
MPV_decode_defaults(s);
|
|
s->avctx = avctx;
|
|
|
|
avctx->pix_fmt= PIX_FMT_YUV420P;
|
|
|
|
h->luma_scan[0] = 0;
|
|
h->luma_scan[1] = 8;
|
|
h->intra_pred_l[ INTRA_L_VERT] = intra_pred_vert;
|
|
h->intra_pred_l[ INTRA_L_HORIZ] = intra_pred_horiz;
|
|
h->intra_pred_l[ INTRA_L_LP] = intra_pred_lp;
|
|
h->intra_pred_l[ INTRA_L_DOWN_LEFT] = intra_pred_down_left;
|
|
h->intra_pred_l[INTRA_L_DOWN_RIGHT] = intra_pred_down_right;
|
|
h->intra_pred_l[ INTRA_L_LP_LEFT] = intra_pred_lp_left;
|
|
h->intra_pred_l[ INTRA_L_LP_TOP] = intra_pred_lp_top;
|
|
h->intra_pred_l[ INTRA_L_DC_128] = intra_pred_dc_128;
|
|
h->intra_pred_c[ INTRA_C_LP] = intra_pred_lp;
|
|
h->intra_pred_c[ INTRA_C_HORIZ] = intra_pred_horiz;
|
|
h->intra_pred_c[ INTRA_C_VERT] = intra_pred_vert;
|
|
h->intra_pred_c[ INTRA_C_PLANE] = intra_pred_plane;
|
|
h->intra_pred_c[ INTRA_C_LP_LEFT] = intra_pred_lp_left;
|
|
h->intra_pred_c[ INTRA_C_LP_TOP] = intra_pred_lp_top;
|
|
h->intra_pred_c[ INTRA_C_DC_128] = intra_pred_dc_128;
|
|
h->mv[ 7] = ff_cavs_un_mv;
|
|
h->mv[19] = ff_cavs_un_mv;
|
|
return 0;
|
|
}
|
|
|
|
av_cold int ff_cavs_end(AVCodecContext *avctx) {
|
|
AVSContext *h = avctx->priv_data;
|
|
|
|
av_free(h->top_qp);
|
|
av_free(h->top_mv[0]);
|
|
av_free(h->top_mv[1]);
|
|
av_free(h->top_pred_Y);
|
|
av_free(h->top_border_y);
|
|
av_free(h->top_border_u);
|
|
av_free(h->top_border_v);
|
|
av_free(h->col_mv);
|
|
av_free(h->col_type_base);
|
|
av_free(h->block);
|
|
return 0;
|
|
}
|