- if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
- else s->mspel= 0; //FIXME check
-
- if(w->abt_flag){
- w->per_mb_abt= get_bits1(&s->gb)^1;
- if(!w->per_mb_abt){
- w->abt_type= decode012(&s->gb);
- }
- }
-
- if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
- else s->per_mb_rl_table= 0;
-
- if(!s->per_mb_rl_table){
- s->rl_table_index = decode012(&s->gb);
- s->rl_chroma_table_index = s->rl_table_index;
- }
-
- s->dc_table_index = get_bits1(&s->gb);
- s->mv_table_index = get_bits1(&s->gb);
-
- s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
- s->no_rounding ^= 1;
-
- if(s->avctx->debug&FF_DEBUG_PICT_INFO){
- av_log(s->avctx, AV_LOG_DEBUG, "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",
- s->rl_table_index,
- s->rl_chroma_table_index,
- s->dc_table_index,
- s->mv_table_index,
- s->per_mb_rl_table,
- s->qscale,
- s->mspel,
- w->per_mb_abt,
- w->abt_type,
- w->cbp_table_index,
- s->inter_intra_pred);
- }
- }
- s->esc3_level_length= 0;
- s->esc3_run_length= 0;
-
-s->picture_number++; //FIXME ?
-
-
-// if(w->j_type)
-// return wmv2_decode_j_picture(w); //FIXME
-
- if(w->j_type){
- av_log(s->avctx, AV_LOG_ERROR, "J-type picture is not supported\n");
- return -1;
- }
-
- return 0;
-}
-
-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->b8_stride;
- xy = s->block_index[0];
-
- mot_val = s->current_picture.motion_val[0][xy];
-
- A = s->current_picture.motion_val[0][xy - 1];
- B = s->current_picture.motion_val[0][xy - wrap];
- C = s->current_picture.motion_val[0][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;
-
- 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:
- av_log(s->avctx, AV_LOG_ERROR, "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);