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
27 #include "simple_idct.h"
29 #define SKIP_TYPE_NONE 0
30 #define SKIP_TYPE_MPEG 1
31 #define SKIP_TYPE_ROW 2
32 #define SKIP_TYPE_COL 3
35 typedef struct Wmv2Context{
43 int abt_type_table[6];
53 ScanTable abt_scantable[2];
54 DECLARE_ALIGNED_8(DCTELEM, abt_block2[6][64]);
57 static void wmv2_common_init(Wmv2Context * w){
58 MpegEncContext * const s= &w->s;
60 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA);
61 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB);
64 #ifdef CONFIG_WMV2_ENCODER
66 static int encode_ext_header(Wmv2Context *w){
67 MpegEncContext * const s= &w->s;
71 init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
73 put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
74 put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
76 put_bits(&pb, 1, w->mspel_bit=1);
77 put_bits(&pb, 1, w->flag3=1);
78 put_bits(&pb, 1, w->abt_flag=1);
79 put_bits(&pb, 1, w->j_type_bit=1);
80 put_bits(&pb, 1, w->top_left_mv_flag=0);
81 put_bits(&pb, 1, w->per_mb_rl_bit=1);
82 put_bits(&pb, 3, code=1);
86 s->slice_height = s->mb_height / code;
91 static int wmv2_encode_init(AVCodecContext *avctx){
92 Wmv2Context * const w= avctx->priv_data;
94 if(MPV_encode_init(avctx) < 0)
99 avctx->extradata_size= 4;
100 avctx->extradata= av_mallocz(avctx->extradata_size + 10);
101 encode_ext_header(w);
106 #if 0 /* unused, remove? */
107 static int wmv2_encode_end(AVCodecContext *avctx){
109 if(MPV_encode_end(avctx) < 0)
112 avctx->extradata_size= 0;
113 av_freep(&avctx->extradata);
119 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
121 Wmv2Context * const w= (Wmv2Context*)s;
123 put_bits(&s->pb, 1, s->pict_type - 1);
124 if(s->pict_type == I_TYPE){
125 put_bits(&s->pb, 7, 0);
127 put_bits(&s->pb, 5, s->qscale);
129 s->dc_table_index = 1;
130 s->mv_table_index = 1; /* only if P frame */
131 // s->use_skip_mb_code = 1; /* only if P frame */
132 s->per_mb_rl_table = 0;
138 assert(s->flipflop_rounding);
140 if (s->pict_type == I_TYPE) {
141 assert(s->no_rounding==1);
142 if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
144 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
146 if(!s->per_mb_rl_table){
147 ff_code012(&s->pb, s->rl_chroma_table_index);
148 ff_code012(&s->pb, s->rl_table_index);
151 put_bits(&s->pb, 1, s->dc_table_index);
153 s->inter_intra_pred= 0;
157 put_bits(&s->pb, 2, SKIP_TYPE_NONE);
159 ff_code012(&s->pb, cbp_index=0);
162 w->cbp_table_index= map[cbp_index];
163 }else if(s->qscale <= 20){
165 w->cbp_table_index= map[cbp_index];
168 w->cbp_table_index= map[cbp_index];
171 if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
174 put_bits(&s->pb, 1, w->per_mb_abt^1);
176 ff_code012(&s->pb, w->abt_type);
180 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
182 if(!s->per_mb_rl_table){
183 ff_code012(&s->pb, s->rl_table_index);
184 s->rl_chroma_table_index = s->rl_table_index;
186 put_bits(&s->pb, 1, s->dc_table_index);
187 put_bits(&s->pb, 1, s->mv_table_index);
189 s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
191 s->esc3_level_length= 0;
192 s->esc3_run_length= 0;
197 /* Nearly identical to wmv1 but that is just because we do not use the
198 * useless M$ crap features. It is duplicated here in case someone wants
199 * to add support for these crap features. */
200 void ff_wmv2_encode_mb(MpegEncContext * s,
201 DCTELEM block[6][64],
202 int motion_x, int motion_y)
204 Wmv2Context * const w= (Wmv2Context*)s;
205 int cbp, coded_cbp, i;
207 uint8_t *coded_block;
214 for (i = 0; i < 6; i++) {
215 if (s->block_last_index[i] >= 0)
220 wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
221 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
224 h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
225 msmpeg4_encode_motion(s, motion_x - pred_x,
231 for (i = 0; i < 6; i++) {
233 val = (s->block_last_index[i] >= 1);
234 cbp |= val << (5 - i);
236 /* predict value for close blocks only for luma */
237 pred = coded_block_pred(s, i, &coded_block);
241 coded_cbp |= val << (5 - i);
245 printf("cbp=%x %x\n", cbp, coded_cbp);
248 if (s->pict_type == I_TYPE) {
250 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
253 wmv2_inter_table[w->cbp_table_index][cbp][1],
254 wmv2_inter_table[w->cbp_table_index][cbp][0]);
256 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
257 if(s->inter_intra_pred){
259 put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
263 for (i = 0; i < 6; i++) {
264 ff_msmpeg4_encode_block(s, block[i], i);
267 #endif //CONFIG_WMV2_ENCODER
269 static void parse_mb_skip(Wmv2Context * w){
271 MpegEncContext * const s= &w->s;
272 uint32_t * const mb_type= s->current_picture_ptr->mb_type;
274 w->skip_type= get_bits(&s->gb, 2);
275 switch(w->skip_type){
277 for(mb_y=0; mb_y<s->mb_height; mb_y++){
278 for(mb_x=0; mb_x<s->mb_width; mb_x++){
279 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
284 for(mb_y=0; mb_y<s->mb_height; mb_y++){
285 for(mb_x=0; mb_x<s->mb_width; mb_x++){
286 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
291 for(mb_y=0; mb_y<s->mb_height; mb_y++){
292 if(get_bits1(&s->gb)){
293 for(mb_x=0; mb_x<s->mb_width; mb_x++){
294 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
297 for(mb_x=0; mb_x<s->mb_width; mb_x++){
298 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
304 for(mb_x=0; mb_x<s->mb_width; mb_x++){
305 if(get_bits1(&s->gb)){
306 for(mb_y=0; mb_y<s->mb_height; mb_y++){
307 mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
310 for(mb_y=0; mb_y<s->mb_height; mb_y++){
311 mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
319 static int decode_ext_header(Wmv2Context *w){
320 MpegEncContext * const s= &w->s;
325 if(s->avctx->extradata_size<4) return -1;
327 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
329 fps = get_bits(&gb, 5);
330 s->bit_rate = get_bits(&gb, 11)*1024;
331 w->mspel_bit = get_bits1(&gb);
332 w->flag3 = get_bits1(&gb);
333 w->abt_flag = get_bits1(&gb);
334 w->j_type_bit = get_bits1(&gb);
335 w->top_left_mv_flag= get_bits1(&gb);
336 w->per_mb_rl_bit = get_bits1(&gb);
337 code = get_bits(&gb, 3);
339 if(code==0) return -1;
341 s->slice_height = s->mb_height / code;
343 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
344 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, flag3:%d, slices:%d\n",
345 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,
351 int ff_wmv2_decode_picture_header(MpegEncContext * s)
353 Wmv2Context * const w= (Wmv2Context*)s;
359 for(i=0; i<s->gb.size*8; i++)
360 printf("%d", get_bits1(&s->gb));
361 // get_bits1(&s->gb);
366 if(s->picture_number==0)
367 decode_ext_header(w);
369 s->pict_type = get_bits(&s->gb, 1) + 1;
370 if(s->pict_type == I_TYPE){
371 code = get_bits(&s->gb, 7);
372 av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
374 s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
381 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
383 Wmv2Context * const w= (Wmv2Context*)s;
385 if (s->pict_type == I_TYPE) {
386 if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
387 else w->j_type= 0; //FIXME check
390 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
391 else s->per_mb_rl_table= 0;
393 if(!s->per_mb_rl_table){
394 s->rl_chroma_table_index = decode012(&s->gb);
395 s->rl_table_index = decode012(&s->gb);
398 s->dc_table_index = get_bits1(&s->gb);
400 s->inter_intra_pred= 0;
402 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
403 av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
405 s->rl_chroma_table_index,
416 cbp_index= decode012(&s->gb);
419 w->cbp_table_index= map[cbp_index];
420 }else if(s->qscale <= 20){
422 w->cbp_table_index= map[cbp_index];
425 w->cbp_table_index= map[cbp_index];
428 if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
429 else s->mspel= 0; //FIXME check
432 w->per_mb_abt= get_bits1(&s->gb)^1;
434 w->abt_type= decode012(&s->gb);
438 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
439 else s->per_mb_rl_table= 0;
441 if(!s->per_mb_rl_table){
442 s->rl_table_index = decode012(&s->gb);
443 s->rl_chroma_table_index = s->rl_table_index;
446 s->dc_table_index = get_bits1(&s->gb);
447 s->mv_table_index = get_bits1(&s->gb);
449 s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
452 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
453 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",
455 s->rl_chroma_table_index,
464 s->inter_intra_pred);
467 s->esc3_level_length= 0;
468 s->esc3_run_length= 0;
470 s->picture_number++; //FIXME ?
474 // return wmv2_decode_j_picture(w); //FIXME
477 av_log(s->avctx, AV_LOG_ERROR, "J-type picture is not supported\n");
484 static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
485 MpegEncContext * const s= &w->s;
488 ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
492 if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
493 w->hshift= get_bits1(&s->gb);
497 //printf("%d %d ", *mx_ptr, *my_ptr);
502 static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
503 MpegEncContext * const s= &w->s;
504 int xy, wrap, diff, type;
505 int16_t *A, *B, *C, *mot_val;
508 xy = s->block_index[0];
510 mot_val = s->current_picture.motion_val[0][xy];
512 A = s->current_picture.motion_val[0][xy - 1];
513 B = s->current_picture.motion_val[0][xy - wrap];
514 C = s->current_picture.motion_val[0][xy + 2 - wrap];
516 if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
517 diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
522 type= get_bits1(&s->gb);
533 /* special case for first (slice) line */
534 if (s->first_slice_line) {
538 *px = mid_pred(A[0], B[0], C[0]);
539 *py = mid_pred(A[1], B[1], C[1]);
546 static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
547 MpegEncContext * const s= &w->s;
548 static const int sub_cbp_table[3]= {2,3,1};
552 s->block_last_index[n] = -1;
558 w->abt_type= decode012(&s->gb);
561 printf("B%d", w->abt_type);
563 w->abt_type_table[n]= w->abt_type;
566 // const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
567 const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
568 // const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
570 sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
571 // printf("S%d", sub_cbp);
574 if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
579 if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
582 s->block_last_index[n] = 63;
586 return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
590 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
591 MpegEncContext * const s= &w->s;
593 if (s->block_last_index[n] >= 0) {
594 switch(w->abt_type_table[n]){
596 s->dsp.idct_add (dst, stride, block1);
599 simple_idct84_add(dst , stride, block1);
600 simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
601 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
604 simple_idct48_add(dst , stride, block1);
605 simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
606 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
609 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
614 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
615 Wmv2Context * const w= (Wmv2Context*)s;
617 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
618 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
619 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
620 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
622 if(s->flags&CODEC_FLAG_GRAY) return;
624 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
625 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
628 void ff_mspel_motion(MpegEncContext *s,
629 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
630 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
631 int motion_x, int motion_y, int h)
633 Wmv2Context * const w= (Wmv2Context*)s;
635 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
638 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
639 dxy = 2*dxy + w->hshift;
640 src_x = s->mb_x * 16 + (motion_x >> 1);
641 src_y = s->mb_y * 16 + (motion_y >> 1);
643 /* WARNING: do no forget half pels */
644 v_edge_pos = s->v_edge_pos;
645 src_x = av_clip(src_x, -16, s->width);
646 src_y = av_clip(src_y, -16, s->height);
648 if(src_x<=-16 || src_x >= s->width)
650 if(src_y<=-16 || src_y >= s->height)
653 linesize = s->linesize;
654 uvlinesize = s->uvlinesize;
655 ptr = ref_picture[0] + (src_y * linesize) + src_x;
657 if(s->flags&CODEC_FLAG_EMU_EDGE){
658 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
659 || src_y + h+1 >= v_edge_pos){
660 ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, s->linesize, 19, 19,
661 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
662 ptr= s->edge_emu_buffer + 1 + s->linesize;
667 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
668 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
669 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
670 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
672 if(s->flags&CODEC_FLAG_GRAY) return;
674 if (s->out_format == FMT_H263) {
676 if ((motion_x & 3) != 0)
678 if ((motion_y & 3) != 0)
685 dxy = ((my & 1) << 1) | (mx & 1);
690 src_x = s->mb_x * 8 + mx;
691 src_y = s->mb_y * 8 + my;
692 src_x = av_clip(src_x, -8, s->width >> 1);
693 if (src_x == (s->width >> 1))
695 src_y = av_clip(src_y, -8, s->height >> 1);
696 if (src_y == (s->height >> 1))
698 offset = (src_y * uvlinesize) + src_x;
699 ptr = ref_picture[1] + offset;
701 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
702 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
703 ptr= s->edge_emu_buffer;
705 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
707 ptr = ref_picture[2] + offset;
709 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
710 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
711 ptr= s->edge_emu_buffer;
713 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
717 static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
719 Wmv2Context * const w= (Wmv2Context*)s;
723 if(w->j_type) return 0;
725 if (s->pict_type == P_TYPE) {
726 if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
730 s->block_last_index[i] = -1;
731 s->mv_dir = MV_DIR_FORWARD;
732 s->mv_type = MV_TYPE_16X16;
740 code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
743 s->mb_intra = (~code & 0x40) >> 6;
748 code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
750 av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
753 /* predict coded block pattern */
756 int val = ((code >> (5 - i)) & 1);
758 int pred = coded_block_pred(s, i, &coded_val);
762 cbp |= val << (5 - i);
768 //printf("P at %d %d\n", s->mb_x, s->mb_y);
769 wmv2_pred_motion(w, &mx, &my);
772 s->dsp.clear_blocks(s->block[0]);
773 if(s->per_mb_rl_table){
774 s->rl_table_index = decode012(&s->gb);
775 s->rl_chroma_table_index = s->rl_table_index;
778 if(w->abt_flag && w->per_mb_abt){
779 w->per_block_abt= get_bits1(&s->gb);
780 if(!w->per_block_abt)
781 w->abt_type= decode012(&s->gb);
786 if (wmv2_decode_motion(w, &mx, &my) < 0)
789 s->mv_dir = MV_DIR_FORWARD;
790 s->mv_type = MV_TYPE_16X16;
794 for (i = 0; i < 6; i++) {
795 if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
797 av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
802 //if(s->pict_type==P_TYPE)
803 // printf("%d%d ", s->inter_intra_pred, cbp);
804 //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));
805 s->ac_pred = get_bits1(&s->gb);
806 if(s->inter_intra_pred){
807 s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
808 // printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
810 if(s->per_mb_rl_table && cbp){
811 s->rl_table_index = decode012(&s->gb);
812 s->rl_chroma_table_index = s->rl_table_index;
815 s->dsp.clear_blocks(s->block[0]);
816 for (i = 0; i < 6; i++) {
817 if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
819 av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
828 static int wmv2_decode_init(AVCodecContext *avctx){
829 Wmv2Context * const w= avctx->priv_data;
831 if(ff_h263_decode_init(avctx) < 0)
839 #ifdef CONFIG_WMV2_DECODER
840 AVCodec wmv2_decoder = {
848 ff_h263_decode_frame,
849 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
853 #ifdef CONFIG_WMV2_ENCODER
854 AVCodec wmv2_encoder = {
862 .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},