mirror of https://git.ffmpeg.org/ffmpeg.git
848 lines
24 KiB
C
848 lines
24 KiB
C
/*
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* Copyright (c) 2002 The FFmpeg Project.
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/**
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* @file wmv2.c
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* wmv2 codec.
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*/
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#include "simple_idct.h"
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#define SKIP_TYPE_NONE 0
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#define SKIP_TYPE_MPEG 1
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#define SKIP_TYPE_ROW 2
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#define SKIP_TYPE_COL 3
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typedef struct Wmv2Context{
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MpegEncContext s;
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int j_type_bit;
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int j_type;
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int flag3;
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int flag63;
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int abt_flag;
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int abt_type;
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int abt_type_table[6];
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int per_mb_abt;
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int per_block_abt;
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int mspel_bit;
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int cbp_table_index;
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int top_left_mv_flag;
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int per_mb_rl_bit;
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int skip_type;
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int hshift;
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ScanTable abt_scantable[2];
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DCTELEM abt_block2[6][64] __align8;
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}Wmv2Context;
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static void wmv2_common_init(Wmv2Context * w){
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MpegEncContext * const s= &w->s;
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ff_init_scantable(s, &w->abt_scantable[0], wmv2_scantableA);
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ff_init_scantable(s, &w->abt_scantable[1], wmv2_scantableB);
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}
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static int encode_ext_header(Wmv2Context *w){
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MpegEncContext * const s= &w->s;
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PutBitContext pb;
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int code;
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init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size, NULL, NULL);
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put_bits(&pb, 5, s->avctx->frame_rate / s->avctx->frame_rate_base); //yes 29.97 -> 29
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put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
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put_bits(&pb, 1, w->mspel_bit=1);
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put_bits(&pb, 1, w->flag3=1);
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put_bits(&pb, 1, w->abt_flag=1);
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put_bits(&pb, 1, w->j_type_bit=1);
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put_bits(&pb, 1, w->top_left_mv_flag=0);
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put_bits(&pb, 1, w->per_mb_rl_bit=1);
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put_bits(&pb, 3, code=1);
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flush_put_bits(&pb);
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s->slice_height = s->mb_height / code;
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return 0;
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}
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#ifdef CONFIG_ENCODERS
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static int wmv2_encode_init(AVCodecContext *avctx){
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Wmv2Context * const w= avctx->priv_data;
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if(MPV_encode_init(avctx) < 0)
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return -1;
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wmv2_common_init(w);
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avctx->extradata_size= 4;
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avctx->extradata= av_mallocz(avctx->extradata_size + 10);
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encode_ext_header(w);
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return 0;
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}
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static int wmv2_encode_end(AVCodecContext *avctx){
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Wmv2Context * const w= avctx->priv_data;
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if(MPV_encode_end(avctx) < 0)
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return -1;
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avctx->extradata_size= 0;
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av_freep(&avctx->extradata);
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return 0;
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}
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int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
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{
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Wmv2Context * const w= (Wmv2Context*)s;
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put_bits(&s->pb, 1, s->pict_type - 1);
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if(s->pict_type == I_TYPE){
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put_bits(&s->pb, 7, 0);
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}
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put_bits(&s->pb, 5, s->qscale);
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s->dc_table_index = 1;
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s->mv_table_index = 1; /* only if P frame */
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// s->use_skip_mb_code = 1; /* only if P frame */
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s->per_mb_rl_table = 0;
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s->mspel= 0;
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w->per_mb_abt=0;
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w->abt_type=0;
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w->j_type=0;
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assert(s->flipflop_rounding);
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if (s->pict_type == I_TYPE) {
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assert(s->no_rounding==1);
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if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
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if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
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if(!s->per_mb_rl_table){
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code012(&s->pb, s->rl_chroma_table_index);
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code012(&s->pb, s->rl_table_index);
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}
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put_bits(&s->pb, 1, s->dc_table_index);
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s->inter_intra_pred= 0;
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}else{
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int cbp_index;
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put_bits(&s->pb, 2, SKIP_TYPE_NONE);
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code012(&s->pb, cbp_index=0);
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if(s->qscale <= 10){
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int map[3]= {0,2,1};
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w->cbp_table_index= map[cbp_index];
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}else if(s->qscale <= 20){
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int map[3]= {1,0,2};
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w->cbp_table_index= map[cbp_index];
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}else{
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int map[3]= {2,1,0};
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w->cbp_table_index= map[cbp_index];
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}
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if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
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if(w->abt_flag){
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put_bits(&s->pb, 1, w->per_mb_abt^1);
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if(!w->per_mb_abt){
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code012(&s->pb, w->abt_type);
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}
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}
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if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
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if(!s->per_mb_rl_table){
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code012(&s->pb, s->rl_table_index);
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s->rl_chroma_table_index = s->rl_table_index;
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}
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put_bits(&s->pb, 1, s->dc_table_index);
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put_bits(&s->pb, 1, s->mv_table_index);
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s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
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}
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s->esc3_level_length= 0;
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s->esc3_run_length= 0;
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return 0;
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}
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// nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
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// its duplicated here in case someone wants to add support for these carp features
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void ff_wmv2_encode_mb(MpegEncContext * s,
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DCTELEM block[6][64],
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int motion_x, int motion_y)
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{
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Wmv2Context * const w= (Wmv2Context*)s;
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int cbp, coded_cbp, i;
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int pred_x, pred_y;
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uint8_t *coded_block;
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handle_slices(s);
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if (!s->mb_intra) {
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/* compute cbp */
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set_stat(ST_INTER_MB);
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cbp = 0;
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for (i = 0; i < 6; i++) {
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if (s->block_last_index[i] >= 0)
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cbp |= 1 << (5 - i);
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}
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put_bits(&s->pb,
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wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
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wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
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/* motion vector */
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h263_pred_motion(s, 0, &pred_x, &pred_y);
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msmpeg4_encode_motion(s, motion_x - pred_x,
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motion_y - pred_y);
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} else {
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/* compute cbp */
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cbp = 0;
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coded_cbp = 0;
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for (i = 0; i < 6; i++) {
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int val, pred;
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val = (s->block_last_index[i] >= 1);
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cbp |= val << (5 - i);
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if (i < 4) {
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/* predict value for close blocks only for luma */
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pred = coded_block_pred(s, i, &coded_block);
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*coded_block = val;
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val = val ^ pred;
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}
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coded_cbp |= val << (5 - i);
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}
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#if 0
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if (coded_cbp)
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printf("cbp=%x %x\n", cbp, coded_cbp);
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#endif
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if (s->pict_type == I_TYPE) {
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set_stat(ST_INTRA_MB);
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put_bits(&s->pb,
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table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
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} else {
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put_bits(&s->pb,
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wmv2_inter_table[w->cbp_table_index][cbp][1],
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wmv2_inter_table[w->cbp_table_index][cbp][0]);
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}
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set_stat(ST_INTRA_MB);
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put_bits(&s->pb, 1, 0); /* no AC prediction yet */
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if(s->inter_intra_pred){
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s->h263_aic_dir=0;
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put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
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}
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}
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for (i = 0; i < 6; i++) {
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msmpeg4_encode_block(s, block[i], i);
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}
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}
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#endif //CONFIG_ENCODERS
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static void parse_mb_skip(Wmv2Context * w){
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int mb_x, mb_y;
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MpegEncContext * const s= &w->s;
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w->skip_type= get_bits(&s->gb, 2);
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switch(w->skip_type){
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case SKIP_TYPE_NONE:
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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s->mb_type[mb_y*s->mb_width + mb_x]= 0;
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}
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}
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break;
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case SKIP_TYPE_MPEG:
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
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}
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}
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break;
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case SKIP_TYPE_ROW:
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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if(get_bits1(&s->gb)){
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
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}
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}else{
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
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}
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}
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}
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break;
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case SKIP_TYPE_COL:
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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if(get_bits1(&s->gb)){
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
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}
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}else{
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
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}
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}
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}
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break;
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}
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}
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static int decode_ext_header(Wmv2Context *w){
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MpegEncContext * const s= &w->s;
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GetBitContext gb;
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int fps;
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int code;
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if(s->avctx->extradata_size<4) return -1;
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init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
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fps = get_bits(&gb, 5);
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s->bit_rate = get_bits(&gb, 11)*1024;
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w->mspel_bit = get_bits1(&gb);
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w->flag3 = get_bits1(&gb);
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w->abt_flag = get_bits1(&gb);
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w->j_type_bit = get_bits1(&gb);
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w->top_left_mv_flag= get_bits1(&gb);
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w->per_mb_rl_bit = get_bits1(&gb);
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code = get_bits(&gb, 3);
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if(code==0) return -1;
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s->slice_height = s->mb_height / code;
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if(s->avctx->debug&FF_DEBUG_PICT_INFO){
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printf("fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, flag3:%d, slices:%d\n",
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fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, w->flag3,
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code);
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}
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return 0;
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}
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int ff_wmv2_decode_picture_header(MpegEncContext * s)
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{
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Wmv2Context * const w= (Wmv2Context*)s;
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int code, i;
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#if 0
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{
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int i;
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for(i=0; i<s->gb.size*8; i++)
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printf("%d", get_bits1(&s->gb));
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// get_bits1(&s->gb);
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printf("END\n");
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return -1;
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}
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#endif
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if(s->picture_number==0)
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decode_ext_header(w);
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s->pict_type = get_bits(&s->gb, 1) + 1;
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if(s->pict_type == I_TYPE){
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code = get_bits(&s->gb, 7);
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printf("I7:%X/\n", code);
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}
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s->qscale = get_bits(&s->gb, 5);
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if (s->pict_type == I_TYPE) {
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if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
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else w->j_type= 0; //FIXME check
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if(!w->j_type){
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if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
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else s->per_mb_rl_table= 0;
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if(!s->per_mb_rl_table){
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s->rl_chroma_table_index = decode012(&s->gb);
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s->rl_table_index = decode012(&s->gb);
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}
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s->dc_table_index = get_bits1(&s->gb);
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}
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s->inter_intra_pred= 0;
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s->no_rounding = 1;
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if(s->avctx->debug&FF_DEBUG_PICT_INFO){
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printf("qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
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s->qscale,
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s->rl_chroma_table_index,
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s->rl_table_index,
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s->dc_table_index,
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s->per_mb_rl_table,
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w->j_type);
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}
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}else{
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int cbp_index;
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w->j_type=0;
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parse_mb_skip(w);
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cbp_index= decode012(&s->gb);
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if(s->qscale <= 10){
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int map[3]= {0,2,1};
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w->cbp_table_index= map[cbp_index];
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}else if(s->qscale <= 20){
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int map[3]= {1,0,2};
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w->cbp_table_index= map[cbp_index];
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}else{
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int map[3]= {2,1,0};
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w->cbp_table_index= map[cbp_index];
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}
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if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
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else s->mspel= 0; //FIXME check
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if(w->abt_flag){
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w->per_mb_abt= get_bits1(&s->gb)^1;
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if(!w->per_mb_abt){
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w->abt_type= decode012(&s->gb);
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}
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}
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if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
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else s->per_mb_rl_table= 0;
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if(!s->per_mb_rl_table){
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s->rl_table_index = decode012(&s->gb);
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s->rl_chroma_table_index = s->rl_table_index;
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}
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s->dc_table_index = get_bits1(&s->gb);
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s->mv_table_index = get_bits1(&s->gb);
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s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
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s->no_rounding ^= 1;
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if(s->avctx->debug&FF_DEBUG_PICT_INFO){
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printf("rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
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s->rl_table_index,
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s->rl_chroma_table_index,
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s->dc_table_index,
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s->mv_table_index,
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s->per_mb_rl_table,
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s->qscale,
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s->mspel,
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w->per_mb_abt,
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w->abt_type,
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w->cbp_table_index,
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s->inter_intra_pred);
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}
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}
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s->esc3_level_length= 0;
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s->esc3_run_length= 0;
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if(s->avctx->debug&FF_DEBUG_SKIP){
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for(i=0; i<s->mb_num; i++){
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if(i%s->mb_width==0) printf("\n");
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printf("%d", s->mb_type[i]);
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}
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}
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s->picture_number++; //FIXME ?
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// if(w->j_type)
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// return wmv2_decode_j_picture(w); //FIXME
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|
if(w->j_type){
|
|
printf("J-type picture isnt supported\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ff_wmv2_decode_init(MpegEncContext *s){
|
|
}
|
|
|
|
static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
|
|
MpegEncContext * const s= &w->s;
|
|
int ret;
|
|
|
|
ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
|
|
|
|
if(ret<0) return -1;
|
|
|
|
if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
|
|
w->hshift= get_bits1(&s->gb);
|
|
else
|
|
w->hshift= 0;
|
|
|
|
//printf("%d %d ", *mx_ptr, *my_ptr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
|
|
MpegEncContext * const s= &w->s;
|
|
int xy, wrap, diff, type;
|
|
int16_t *A, *B, *C, *mot_val;
|
|
|
|
wrap = s->block_wrap[0];
|
|
xy = s->block_index[0];
|
|
|
|
mot_val = s->motion_val[xy];
|
|
|
|
A = s->motion_val[xy - 1];
|
|
B = s->motion_val[xy - wrap];
|
|
C = s->motion_val[xy + 2 - wrap];
|
|
|
|
diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
|
|
|
|
if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
|
|
type= get_bits1(&s->gb);
|
|
else
|
|
type= 2;
|
|
|
|
if(type == 0){
|
|
*px= A[0];
|
|
*py= A[1];
|
|
}else if(type == 1){
|
|
*px= B[0];
|
|
*py= B[1];
|
|
}else{
|
|
/* special case for first (slice) line */
|
|
if (s->first_slice_line) {
|
|
*px = A[0];
|
|
*py = A[1];
|
|
} else {
|
|
*px = mid_pred(A[0], B[0], C[0]);
|
|
*py = mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
}
|
|
|
|
return mot_val;
|
|
}
|
|
|
|
static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
|
|
MpegEncContext * const s= &w->s;
|
|
static const int sub_cbp_table[3]= {2,3,1};
|
|
int sub_cbp;
|
|
|
|
if(!cbp){
|
|
s->block_last_index[n] = -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
if(w->per_block_abt)
|
|
w->abt_type= decode012(&s->gb);
|
|
#if 0
|
|
if(w->per_block_abt)
|
|
printf("B%d", w->abt_type);
|
|
#endif
|
|
w->abt_type_table[n]= w->abt_type;
|
|
|
|
if(w->abt_type){
|
|
// const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
|
|
const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
|
|
// const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
|
|
|
|
sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
|
|
// printf("S%d", sub_cbp);
|
|
|
|
if(sub_cbp&1){
|
|
if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
|
|
return -1;
|
|
}
|
|
|
|
if(sub_cbp&2){
|
|
if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
|
|
return -1;
|
|
}
|
|
s->block_last_index[n] = 63;
|
|
|
|
return 0;
|
|
}else{
|
|
return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
|
|
}
|
|
}
|
|
|
|
static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
|
|
MpegEncContext * const s= &w->s;
|
|
uint8_t temp[2][64];
|
|
|
|
switch(w->abt_type_table[n]){
|
|
case 0:
|
|
if (s->block_last_index[n] >= 0) {
|
|
s->dsp.idct_add (dst, stride, block1);
|
|
}
|
|
break;
|
|
case 1:
|
|
simple_idct84_add(dst , stride, block1);
|
|
simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
|
|
memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
|
|
break;
|
|
case 2:
|
|
simple_idct48_add(dst , stride, block1);
|
|
simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
|
|
memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
|
|
break;
|
|
default:
|
|
fprintf(stderr, "internal error in WMV2 abt\n");
|
|
}
|
|
}
|
|
|
|
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
|
|
Wmv2Context * const w= (Wmv2Context*)s;
|
|
|
|
wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
|
|
wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
|
|
wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
|
|
wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
|
|
|
|
if(s->flags&CODEC_FLAG_GRAY) return;
|
|
|
|
wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
|
|
wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
|
|
}
|
|
|
|
void ff_mspel_motion(MpegEncContext *s,
|
|
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
|
|
uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
|
|
int motion_x, int motion_y, int h)
|
|
{
|
|
Wmv2Context * const w= (Wmv2Context*)s;
|
|
uint8_t *ptr;
|
|
int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
|
|
int emu=0;
|
|
|
|
dxy = ((motion_y & 1) << 1) | (motion_x & 1);
|
|
dxy = 2*dxy + w->hshift;
|
|
src_x = s->mb_x * 16 + (motion_x >> 1);
|
|
src_y = s->mb_y * 16 + (motion_y >> 1);
|
|
|
|
/* WARNING: do no forget half pels */
|
|
v_edge_pos = s->v_edge_pos;
|
|
src_x = clip(src_x, -16, s->width);
|
|
src_y = clip(src_y, -16, s->height);
|
|
linesize = s->linesize;
|
|
uvlinesize = s->uvlinesize;
|
|
ptr = ref_picture[0] + (src_y * linesize) + src_x;
|
|
|
|
if(s->flags&CODEC_FLAG_EMU_EDGE){
|
|
if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
|
|
|| src_y + h+1 >= v_edge_pos){
|
|
ff_emulated_edge_mc(s, ptr - 1 - s->linesize, s->linesize, 19, 19,
|
|
src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
|
|
ptr= s->edge_emu_buffer + 1 + s->linesize;
|
|
emu=1;
|
|
}
|
|
}
|
|
|
|
s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
|
|
s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
|
|
s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
|
|
s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
|
|
|
|
if(s->flags&CODEC_FLAG_GRAY) return;
|
|
|
|
if (s->out_format == FMT_H263) {
|
|
dxy = 0;
|
|
if ((motion_x & 3) != 0)
|
|
dxy |= 1;
|
|
if ((motion_y & 3) != 0)
|
|
dxy |= 2;
|
|
mx = motion_x >> 2;
|
|
my = motion_y >> 2;
|
|
} else {
|
|
mx = motion_x / 2;
|
|
my = motion_y / 2;
|
|
dxy = ((my & 1) << 1) | (mx & 1);
|
|
mx >>= 1;
|
|
my >>= 1;
|
|
}
|
|
|
|
src_x = s->mb_x * 8 + mx;
|
|
src_y = s->mb_y * 8 + my;
|
|
src_x = clip(src_x, -8, s->width >> 1);
|
|
if (src_x == (s->width >> 1))
|
|
dxy &= ~1;
|
|
src_y = clip(src_y, -8, s->height >> 1);
|
|
if (src_y == (s->height >> 1))
|
|
dxy &= ~2;
|
|
offset = (src_y * uvlinesize) + src_x;
|
|
ptr = ref_picture[1] + offset;
|
|
if(emu){
|
|
ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
|
|
src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
|
|
ptr= s->edge_emu_buffer;
|
|
}
|
|
pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
|
|
|
|
ptr = ref_picture[2] + offset;
|
|
if(emu){
|
|
ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
|
|
src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
|
|
ptr= s->edge_emu_buffer;
|
|
}
|
|
pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
|
|
}
|
|
|
|
|
|
static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
|
|
{
|
|
Wmv2Context * const w= (Wmv2Context*)s;
|
|
int cbp, code, i;
|
|
uint8_t *coded_val;
|
|
|
|
if(w->j_type) return 0;
|
|
|
|
if (s->pict_type == P_TYPE) {
|
|
if(s->mb_type[s->mb_y * s->mb_width + s->mb_x]&MB_TYPE_SKIPED){
|
|
/* skip mb */
|
|
s->mb_intra = 0;
|
|
for(i=0;i<6;i++)
|
|
s->block_last_index[i] = -1;
|
|
s->mv_dir = MV_DIR_FORWARD;
|
|
s->mv_type = MV_TYPE_16X16;
|
|
s->mv[0][0][0] = 0;
|
|
s->mv[0][0][1] = 0;
|
|
s->mb_skiped = 1;
|
|
return 0;
|
|
}
|
|
|
|
code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
|
|
if (code < 0)
|
|
return -1;
|
|
s->mb_intra = (~code & 0x40) >> 6;
|
|
|
|
cbp = code & 0x3f;
|
|
} else {
|
|
s->mb_intra = 1;
|
|
code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
|
|
if (code < 0){
|
|
fprintf(stderr, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
|
|
return -1;
|
|
}
|
|
/* predict coded block pattern */
|
|
cbp = 0;
|
|
for(i=0;i<6;i++) {
|
|
int val = ((code >> (5 - i)) & 1);
|
|
if (i < 4) {
|
|
int pred = coded_block_pred(s, i, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - i);
|
|
}
|
|
}
|
|
|
|
if (!s->mb_intra) {
|
|
int mx, my;
|
|
//printf("P at %d %d\n", s->mb_x, s->mb_y);
|
|
wmv2_pred_motion(w, &mx, &my);
|
|
|
|
if(cbp){
|
|
if(s->per_mb_rl_table){
|
|
s->rl_table_index = decode012(&s->gb);
|
|
s->rl_chroma_table_index = s->rl_table_index;
|
|
}
|
|
|
|
if(w->abt_flag && w->per_mb_abt){
|
|
w->per_block_abt= get_bits1(&s->gb);
|
|
if(!w->per_block_abt)
|
|
w->abt_type= decode012(&s->gb);
|
|
}else
|
|
w->per_block_abt=0;
|
|
}
|
|
|
|
if (wmv2_decode_motion(w, &mx, &my) < 0)
|
|
return -1;
|
|
|
|
s->mv_dir = MV_DIR_FORWARD;
|
|
s->mv_type = MV_TYPE_16X16;
|
|
s->mv[0][0][0] = mx;
|
|
s->mv[0][0][1] = my;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
|
|
{
|
|
fprintf(stderr,"\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
|
|
return -1;
|
|
}
|
|
}
|
|
} else {
|
|
//if(s->pict_type==P_TYPE)
|
|
// printf("%d%d ", s->inter_intra_pred, cbp);
|
|
//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
|
|
s->ac_pred = get_bits1(&s->gb);
|
|
if(s->inter_intra_pred){
|
|
s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
|
|
// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
|
|
}
|
|
if(s->per_mb_rl_table && cbp){
|
|
s->rl_table_index = decode012(&s->gb);
|
|
s->rl_chroma_table_index = s->rl_table_index;
|
|
}
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
|
|
{
|
|
fprintf(stderr,"\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wmv2_decode_init(AVCodecContext *avctx){
|
|
Wmv2Context * const w= avctx->priv_data;
|
|
|
|
if(ff_h263_decode_init(avctx) < 0)
|
|
return -1;
|
|
|
|
wmv2_common_init(w);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec wmv2_decoder = {
|
|
"wmv2",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_WMV2,
|
|
sizeof(Wmv2Context),
|
|
wmv2_decode_init,
|
|
NULL,
|
|
ff_h263_decode_end,
|
|
ff_h263_decode_frame,
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
|
};
|
|
|
|
#ifdef CONFIG_ENCODERS
|
|
AVCodec wmv2_encoder = {
|
|
"wmv2",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_WMV2,
|
|
sizeof(Wmv2Context),
|
|
wmv2_encode_init,
|
|
MPV_encode_picture,
|
|
MPV_encode_end,
|
|
};
|
|
#endif
|