2 * Copyright (c) 2002 The FFmpeg Project.
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "mpegvideo.h"
30 #include "msmpeg4data.h"
31 #include "simple_idct.h"
34 #define SKIP_TYPE_NONE 0
35 #define SKIP_TYPE_MPEG 1
36 #define SKIP_TYPE_ROW 2
37 #define SKIP_TYPE_COL 3
40 typedef struct Wmv2Context{
47 int abt_type_table[6];
57 ScanTable abt_scantable[2];
58 DECLARE_ALIGNED_8(DCTELEM, abt_block2[6][64]);
61 static void wmv2_common_init(Wmv2Context * w){
62 MpegEncContext * const s= &w->s;
64 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA);
65 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB);
68 #ifdef CONFIG_WMV2_ENCODER
70 static int encode_ext_header(Wmv2Context *w){
71 MpegEncContext * const s= &w->s;
75 init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
77 put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
78 put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
80 put_bits(&pb, 1, w->mspel_bit=1);
81 put_bits(&pb, 1, s->loop_filter);
82 put_bits(&pb, 1, w->abt_flag=1);
83 put_bits(&pb, 1, w->j_type_bit=1);
84 put_bits(&pb, 1, w->top_left_mv_flag=0);
85 put_bits(&pb, 1, w->per_mb_rl_bit=1);
86 put_bits(&pb, 3, code=1);
90 s->slice_height = s->mb_height / code;
95 static int wmv2_encode_init(AVCodecContext *avctx){
96 Wmv2Context * const w= avctx->priv_data;
98 if(MPV_encode_init(avctx) < 0)
103 avctx->extradata_size= 4;
104 avctx->extradata= av_mallocz(avctx->extradata_size + 10);
105 encode_ext_header(w);
110 #if 0 /* unused, remove? */
111 static int wmv2_encode_end(AVCodecContext *avctx){
113 if(MPV_encode_end(avctx) < 0)
116 avctx->extradata_size= 0;
117 av_freep(&avctx->extradata);
123 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
125 Wmv2Context * const w= (Wmv2Context*)s;
127 put_bits(&s->pb, 1, s->pict_type - 1);
128 if(s->pict_type == I_TYPE){
129 put_bits(&s->pb, 7, 0);
131 put_bits(&s->pb, 5, s->qscale);
133 s->dc_table_index = 1;
134 s->mv_table_index = 1; /* only if P frame */
135 // s->use_skip_mb_code = 1; /* only if P frame */
136 s->per_mb_rl_table = 0;
142 assert(s->flipflop_rounding);
144 if (s->pict_type == I_TYPE) {
145 assert(s->no_rounding==1);
146 if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
148 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
150 if(!s->per_mb_rl_table){
151 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
152 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
155 put_bits(&s->pb, 1, s->dc_table_index);
157 s->inter_intra_pred= 0;
161 put_bits(&s->pb, 2, SKIP_TYPE_NONE);
163 ff_msmpeg4_code012(&s->pb, cbp_index=0);
166 w->cbp_table_index= map[cbp_index];
167 }else if(s->qscale <= 20){
169 w->cbp_table_index= map[cbp_index];
172 w->cbp_table_index= map[cbp_index];
175 if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
178 put_bits(&s->pb, 1, w->per_mb_abt^1);
180 ff_msmpeg4_code012(&s->pb, w->abt_type);
184 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
186 if(!s->per_mb_rl_table){
187 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
188 s->rl_chroma_table_index = s->rl_table_index;
190 put_bits(&s->pb, 1, s->dc_table_index);
191 put_bits(&s->pb, 1, s->mv_table_index);
193 s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
195 s->esc3_level_length= 0;
196 s->esc3_run_length= 0;
201 /* Nearly identical to wmv1 but that is just because we do not use the
202 * useless M$ crap features. It is duplicated here in case someone wants
203 * to add support for these crap features. */
204 void ff_wmv2_encode_mb(MpegEncContext * s,
205 DCTELEM block[6][64],
206 int motion_x, int motion_y)
208 Wmv2Context * const w= (Wmv2Context*)s;
209 int cbp, coded_cbp, i;
211 uint8_t *coded_block;
213 ff_msmpeg4_handle_slices(s);
218 for (i = 0; i < 6; i++) {
219 if (s->block_last_index[i] >= 0)
224 wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
225 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
228 h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
229 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
235 for (i = 0; i < 6; i++) {
237 val = (s->block_last_index[i] >= 1);
238 cbp |= val << (5 - i);
240 /* predict value for close blocks only for luma */
241 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
245 coded_cbp |= val << (5 - i);
249 printf("cbp=%x %x\n", cbp, coded_cbp);
252 if (s->pict_type == I_TYPE) {
254 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
257 wmv2_inter_table[w->cbp_table_index][cbp][1],
258 wmv2_inter_table[w->cbp_table_index][cbp][0]);
260 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
261 if(s->inter_intra_pred){
263 put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
267 for (i = 0; i < 6; i++) {
268 ff_msmpeg4_encode_block(s, block[i], i);
271 #endif //CONFIG_WMV2_ENCODER
273 static void parse_mb_skip(Wmv2Context * w){
275 MpegEncContext * const s= &w->s;
276 uint32_t * const mb_type= s->current_picture_ptr->mb_type;
278 w->skip_type= get_bits(&s->gb, 2);
279 switch(w->skip_type){
281 for(mb_y=0; mb_y<s->mb_height; mb_y++){
282 for(mb_x=0; mb_x<s->mb_width; mb_x++){
283 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
288 for(mb_y=0; mb_y<s->mb_height; mb_y++){
289 for(mb_x=0; mb_x<s->mb_width; mb_x++){
290 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
295 for(mb_y=0; mb_y<s->mb_height; mb_y++){
296 if(get_bits1(&s->gb)){
297 for(mb_x=0; mb_x<s->mb_width; mb_x++){
298 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
301 for(mb_x=0; mb_x<s->mb_width; mb_x++){
302 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
308 for(mb_x=0; mb_x<s->mb_width; mb_x++){
309 if(get_bits1(&s->gb)){
310 for(mb_y=0; mb_y<s->mb_height; mb_y++){
311 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
314 for(mb_y=0; mb_y<s->mb_height; mb_y++){
315 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
323 static int decode_ext_header(Wmv2Context *w){
324 MpegEncContext * const s= &w->s;
329 if(s->avctx->extradata_size<4) return -1;
331 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
333 fps = get_bits(&gb, 5);
334 s->bit_rate = get_bits(&gb, 11)*1024;
335 w->mspel_bit = get_bits1(&gb);
336 s->loop_filter = get_bits1(&gb);
337 w->abt_flag = get_bits1(&gb);
338 w->j_type_bit = get_bits1(&gb);
339 w->top_left_mv_flag= get_bits1(&gb);
340 w->per_mb_rl_bit = get_bits1(&gb);
341 code = get_bits(&gb, 3);
343 if(code==0) return -1;
345 s->slice_height = s->mb_height / code;
347 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
348 av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%d, slices:%d\n",
349 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, s->loop_filter,
355 int ff_wmv2_decode_picture_header(MpegEncContext * s)
357 Wmv2Context * const w= (Wmv2Context*)s;
363 for(i=0; i<s->gb.size*8; i++)
364 printf("%d", get_bits1(&s->gb));
365 // get_bits1(&s->gb);
370 if(s->picture_number==0)
371 decode_ext_header(w);
373 s->pict_type = get_bits1(&s->gb) + 1;
374 if(s->pict_type == I_TYPE){
375 code = get_bits(&s->gb, 7);
376 av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
378 s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
385 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
387 Wmv2Context * const w= (Wmv2Context*)s;
389 if (s->pict_type == I_TYPE) {
390 if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
391 else w->j_type= 0; //FIXME check
394 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
395 else s->per_mb_rl_table= 0;
397 if(!s->per_mb_rl_table){
398 s->rl_chroma_table_index = decode012(&s->gb);
399 s->rl_table_index = decode012(&s->gb);
402 s->dc_table_index = get_bits1(&s->gb);
404 s->inter_intra_pred= 0;
406 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
407 av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
409 s->rl_chroma_table_index,
420 cbp_index= decode012(&s->gb);
423 w->cbp_table_index= map[cbp_index];
424 }else if(s->qscale <= 20){
426 w->cbp_table_index= map[cbp_index];
429 w->cbp_table_index= map[cbp_index];
432 if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
433 else s->mspel= 0; //FIXME check
436 w->per_mb_abt= get_bits1(&s->gb)^1;
438 w->abt_type= decode012(&s->gb);
442 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
443 else s->per_mb_rl_table= 0;
445 if(!s->per_mb_rl_table){
446 s->rl_table_index = decode012(&s->gb);
447 s->rl_chroma_table_index = s->rl_table_index;
450 s->dc_table_index = get_bits1(&s->gb);
451 s->mv_table_index = get_bits1(&s->gb);
453 s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
456 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
457 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",
459 s->rl_chroma_table_index,
468 s->inter_intra_pred);
471 s->esc3_level_length= 0;
472 s->esc3_run_length= 0;
474 s->picture_number++; //FIXME ?
478 ff_intrax8_decode_picture(&w->x8, 2*s->qscale, (s->qscale-1)|1 );
485 static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
486 MpegEncContext * const s= &w->s;
489 ret= ff_msmpeg4_decode_motion(s, mx_ptr, my_ptr);
493 if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
494 w->hshift= get_bits1(&s->gb);
498 //printf("%d %d ", *mx_ptr, *my_ptr);
503 static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
504 MpegEncContext * const s= &w->s;
505 int xy, wrap, diff, type;
506 int16_t *A, *B, *C, *mot_val;
509 xy = s->block_index[0];
511 mot_val = s->current_picture.motion_val[0][xy];
513 A = s->current_picture.motion_val[0][xy - 1];
514 B = s->current_picture.motion_val[0][xy - wrap];
515 C = s->current_picture.motion_val[0][xy + 2 - wrap];
517 if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
518 diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
523 type= get_bits1(&s->gb);
534 /* special case for first (slice) line */
535 if (s->first_slice_line) {
539 *px = mid_pred(A[0], B[0], C[0]);
540 *py = mid_pred(A[1], B[1], C[1]);
547 static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
548 MpegEncContext * const s= &w->s;
549 static const int sub_cbp_table[3]= {2,3,1};
553 s->block_last_index[n] = -1;
559 w->abt_type= decode012(&s->gb);
562 printf("B%d", w->abt_type);
564 w->abt_type_table[n]= w->abt_type;
567 // const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
568 const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
569 // const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
571 sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
572 // printf("S%d", sub_cbp);
575 if (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
580 if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
583 s->block_last_index[n] = 63;
587 return ff_msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
591 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
592 MpegEncContext * const s= &w->s;
594 if (s->block_last_index[n] >= 0) {
595 switch(w->abt_type_table[n]){
597 s->dsp.idct_add (dst, stride, block1);
600 simple_idct84_add(dst , stride, block1);
601 simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
602 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
605 simple_idct48_add(dst , stride, block1);
606 simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
607 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
610 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
615 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
616 Wmv2Context * const w= (Wmv2Context*)s;
618 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
619 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
620 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
621 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
623 if(s->flags&CODEC_FLAG_GRAY) return;
625 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
626 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
629 void ff_mspel_motion(MpegEncContext *s,
630 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
631 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
632 int motion_x, int motion_y, int h)
634 Wmv2Context * const w= (Wmv2Context*)s;
636 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
639 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
640 dxy = 2*dxy + w->hshift;
641 src_x = s->mb_x * 16 + (motion_x >> 1);
642 src_y = s->mb_y * 16 + (motion_y >> 1);
644 /* WARNING: do no forget half pels */
645 v_edge_pos = s->v_edge_pos;
646 src_x = av_clip(src_x, -16, s->width);
647 src_y = av_clip(src_y, -16, s->height);
649 if(src_x<=-16 || src_x >= s->width)
651 if(src_y<=-16 || src_y >= s->height)
654 linesize = s->linesize;
655 uvlinesize = s->uvlinesize;
656 ptr = ref_picture[0] + (src_y * linesize) + src_x;
658 if(s->flags&CODEC_FLAG_EMU_EDGE){
659 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
660 || src_y + h+1 >= v_edge_pos){
661 ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, s->linesize, 19, 19,
662 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
663 ptr= s->edge_emu_buffer + 1 + s->linesize;
668 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
669 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
670 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
671 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
673 if(s->flags&CODEC_FLAG_GRAY) return;
675 if (s->out_format == FMT_H263) {
677 if ((motion_x & 3) != 0)
679 if ((motion_y & 3) != 0)
686 dxy = ((my & 1) << 1) | (mx & 1);
691 src_x = s->mb_x * 8 + mx;
692 src_y = s->mb_y * 8 + my;
693 src_x = av_clip(src_x, -8, s->width >> 1);
694 if (src_x == (s->width >> 1))
696 src_y = av_clip(src_y, -8, s->height >> 1);
697 if (src_y == (s->height >> 1))
699 offset = (src_y * uvlinesize) + src_x;
700 ptr = ref_picture[1] + offset;
702 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
703 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
704 ptr= s->edge_emu_buffer;
706 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
708 ptr = ref_picture[2] + offset;
710 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
711 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
712 ptr= s->edge_emu_buffer;
714 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
718 int ff_wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
720 Wmv2Context * const w= (Wmv2Context*)s;
724 if(w->j_type) return 0;
726 if (s->pict_type == P_TYPE) {
727 if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
731 s->block_last_index[i] = -1;
732 s->mv_dir = MV_DIR_FORWARD;
733 s->mv_type = MV_TYPE_16X16;
741 code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
744 s->mb_intra = (~code & 0x40) >> 6;
749 code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
751 av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
754 /* predict coded block pattern */
757 int val = ((code >> (5 - i)) & 1);
759 int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
763 cbp |= val << (5 - i);
769 //printf("P at %d %d\n", s->mb_x, s->mb_y);
770 wmv2_pred_motion(w, &mx, &my);
773 s->dsp.clear_blocks(s->block[0]);
774 if(s->per_mb_rl_table){
775 s->rl_table_index = decode012(&s->gb);
776 s->rl_chroma_table_index = s->rl_table_index;
779 if(w->abt_flag && w->per_mb_abt){
780 w->per_block_abt= get_bits1(&s->gb);
781 if(!w->per_block_abt)
782 w->abt_type= decode012(&s->gb);
787 if (wmv2_decode_motion(w, &mx, &my) < 0)
790 s->mv_dir = MV_DIR_FORWARD;
791 s->mv_type = MV_TYPE_16X16;
795 for (i = 0; i < 6; i++) {
796 if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
798 av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
803 //if(s->pict_type==P_TYPE)
804 // printf("%d%d ", s->inter_intra_pred, cbp);
805 //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));
806 s->ac_pred = get_bits1(&s->gb);
807 if(s->inter_intra_pred){
808 s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
809 // printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
811 if(s->per_mb_rl_table && cbp){
812 s->rl_table_index = decode012(&s->gb);
813 s->rl_chroma_table_index = s->rl_table_index;
816 s->dsp.clear_blocks(s->block[0]);
817 for (i = 0; i < 6; i++) {
818 if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
820 av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
829 static int wmv2_decode_init(AVCodecContext *avctx){
830 Wmv2Context * const w= avctx->priv_data;
832 if(avctx->idct_algo==FF_IDCT_AUTO){
833 avctx->idct_algo=FF_IDCT_WMV2;
836 if(ff_h263_decode_init(avctx) < 0)
841 ff_intrax8_common_init(&w->x8,&w->s);
846 #ifdef CONFIG_WMV2_DECODER
847 AVCodec wmv2_decoder = {
855 ff_h263_decode_frame,
856 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
860 #ifdef CONFIG_WMV2_ENCODER
861 AVCodec wmv2_encoder = {
869 .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},