2 * Copyright (c) 2002 The FFmpeg Project.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "simple_idct.h"
27 #define SKIP_TYPE_NONE 0
28 #define SKIP_TYPE_MPEG 1
29 #define SKIP_TYPE_ROW 2
30 #define SKIP_TYPE_COL 3
33 typedef struct Wmv2Context{
41 int abt_type_table[6];
51 ScanTable abt_scantable[2];
52 DCTELEM abt_block2[6][64] __align8;
55 static void wmv2_common_init(Wmv2Context * w){
56 MpegEncContext * const s= &w->s;
58 ff_init_scantable(s, &w->abt_scantable[0], wmv2_scantableA);
59 ff_init_scantable(s, &w->abt_scantable[1], wmv2_scantableB);
62 static int encode_ext_header(Wmv2Context *w){
63 MpegEncContext * const s= &w->s;
67 init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size, NULL, NULL);
69 put_bits(&pb, 5, s->avctx->frame_rate / s->avctx->frame_rate_base); //yes 29.97 -> 29
70 put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
72 put_bits(&pb, 1, w->mspel_bit=1);
73 put_bits(&pb, 1, w->flag3=1);
74 put_bits(&pb, 1, w->abt_flag=1);
75 put_bits(&pb, 1, w->j_type_bit=1);
76 put_bits(&pb, 1, w->top_left_mv_flag=0);
77 put_bits(&pb, 1, w->per_mb_rl_bit=1);
78 put_bits(&pb, 3, code=1);
82 s->slice_height = s->mb_height / code;
87 #ifdef CONFIG_ENCODERS
88 static int wmv2_encode_init(AVCodecContext *avctx){
89 Wmv2Context * const w= avctx->priv_data;
91 if(MPV_encode_init(avctx) < 0)
96 avctx->extradata_size= 4;
97 avctx->extradata= av_mallocz(avctx->extradata_size + 10);
103 static int wmv2_encode_end(AVCodecContext *avctx){
104 Wmv2Context * const w= avctx->priv_data;
106 if(MPV_encode_end(avctx) < 0)
109 avctx->extradata_size= 0;
110 av_freep(&avctx->extradata);
115 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
117 Wmv2Context * const w= (Wmv2Context*)s;
119 put_bits(&s->pb, 1, s->pict_type - 1);
120 if(s->pict_type == I_TYPE){
121 put_bits(&s->pb, 7, 0);
123 put_bits(&s->pb, 5, s->qscale);
125 s->dc_table_index = 1;
126 s->mv_table_index = 1; /* only if P frame */
127 // s->use_skip_mb_code = 1; /* only if P frame */
128 s->per_mb_rl_table = 0;
134 if (s->pict_type == I_TYPE) {
135 if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
137 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
139 if(!s->per_mb_rl_table){
140 code012(&s->pb, s->rl_chroma_table_index);
141 code012(&s->pb, s->rl_table_index);
144 put_bits(&s->pb, 1, s->dc_table_index);
146 s->inter_intra_pred= 0;
151 put_bits(&s->pb, 2, SKIP_TYPE_NONE);
153 code012(&s->pb, cbp_index=0);
156 w->cbp_table_index= map[cbp_index];
157 }else if(s->qscale <= 20){
159 w->cbp_table_index= map[cbp_index];
162 w->cbp_table_index= map[cbp_index];
165 if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
168 put_bits(&s->pb, 1, w->per_mb_abt^1);
170 code012(&s->pb, w->abt_type);
174 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
176 if(!s->per_mb_rl_table){
177 code012(&s->pb, s->rl_table_index);
178 s->rl_chroma_table_index = s->rl_table_index;
180 put_bits(&s->pb, 1, s->dc_table_index);
181 put_bits(&s->pb, 1, s->mv_table_index);
183 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
186 s->esc3_level_length= 0;
187 s->esc3_run_length= 0;
192 // nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
193 // its duplicated here in case someone wants to add support for these carp features
194 void ff_wmv2_encode_mb(MpegEncContext * s,
195 DCTELEM block[6][64],
196 int motion_x, int motion_y)
198 Wmv2Context * const w= (Wmv2Context*)s;
199 int cbp, coded_cbp, i;
201 uint8_t *coded_block;
207 set_stat(ST_INTER_MB);
209 for (i = 0; i < 6; i++) {
210 if (s->block_last_index[i] >= 0)
215 wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
216 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
219 h263_pred_motion(s, 0, &pred_x, &pred_y);
220 msmpeg4_encode_motion(s, motion_x - pred_x,
226 for (i = 0; i < 6; i++) {
228 val = (s->block_last_index[i] >= 1);
229 cbp |= val << (5 - i);
231 /* predict value for close blocks only for luma */
232 pred = coded_block_pred(s, i, &coded_block);
236 coded_cbp |= val << (5 - i);
240 printf("cbp=%x %x\n", cbp, coded_cbp);
243 if (s->pict_type == I_TYPE) {
244 set_stat(ST_INTRA_MB);
246 table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
249 wmv2_inter_table[w->cbp_table_index][cbp][1],
250 wmv2_inter_table[w->cbp_table_index][cbp][0]);
252 set_stat(ST_INTRA_MB);
253 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
254 if(s->inter_intra_pred){
256 put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
260 for (i = 0; i < 6; i++) {
261 msmpeg4_encode_block(s, block[i], i);
264 #endif //CONFIG_ENCODERS
266 static void parse_mb_skip(Wmv2Context * w){
268 MpegEncContext * const s= &w->s;
270 w->skip_type= get_bits(&s->gb, 2);
271 switch(w->skip_type){
273 for(mb_y=0; mb_y<s->mb_height; mb_y++){
274 for(mb_x=0; mb_x<s->mb_width; mb_x++){
275 s->mb_type[mb_y*s->mb_width + mb_x]= 0;
280 for(mb_y=0; mb_y<s->mb_height; mb_y++){
281 for(mb_x=0; mb_x<s->mb_width; mb_x++){
282 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
287 for(mb_y=0; mb_y<s->mb_height; mb_y++){
288 if(get_bits1(&s->gb)){
289 for(mb_x=0; mb_x<s->mb_width; mb_x++){
290 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
293 for(mb_x=0; mb_x<s->mb_width; mb_x++){
294 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
300 for(mb_x=0; mb_x<s->mb_width; mb_x++){
301 if(get_bits1(&s->gb)){
302 for(mb_y=0; mb_y<s->mb_height; mb_y++){
303 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
306 for(mb_y=0; mb_y<s->mb_height; mb_y++){
307 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
315 static int decode_ext_header(Wmv2Context *w){
316 MpegEncContext * const s= &w->s;
321 if(s->avctx->extradata_size<4) return -1;
323 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
325 fps = get_bits(&gb, 5);
326 s->bit_rate = get_bits(&gb, 11)*1024;
327 w->mspel_bit = get_bits1(&gb);
328 w->flag3 = get_bits1(&gb);
329 w->abt_flag = get_bits1(&gb);
330 w->j_type_bit = get_bits1(&gb);
331 w->top_left_mv_flag= get_bits1(&gb);
332 w->per_mb_rl_bit = get_bits1(&gb);
333 code = get_bits(&gb, 3);
335 if(code==0) return -1;
337 s->slice_height = s->mb_height / code;
339 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
340 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",
341 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,
347 int ff_wmv2_decode_picture_header(MpegEncContext * s)
349 Wmv2Context * const w= (Wmv2Context*)s;
355 for(i=0; i<s->gb.size*8; i++)
356 printf("%d", get_bits1(&s->gb));
357 // get_bits1(&s->gb);
362 if(s->picture_number==0)
363 decode_ext_header(w);
365 s->pict_type = get_bits(&s->gb, 1) + 1;
366 if(s->pict_type == I_TYPE){
367 code = get_bits(&s->gb, 7);
368 printf("I7:%X/\n", code);
370 s->qscale = get_bits(&s->gb, 5);
372 if (s->pict_type == I_TYPE) {
373 if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
374 else w->j_type= 0; //FIXME check
377 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
378 else s->per_mb_rl_table= 0;
380 if(!s->per_mb_rl_table){
381 s->rl_chroma_table_index = decode012(&s->gb);
382 s->rl_table_index = decode012(&s->gb);
385 s->dc_table_index = get_bits1(&s->gb);
387 s->inter_intra_pred= 0;
389 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
390 printf("qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
392 s->rl_chroma_table_index,
403 cbp_index= decode012(&s->gb);
406 w->cbp_table_index= map[cbp_index];
407 }else if(s->qscale <= 20){
409 w->cbp_table_index= map[cbp_index];
412 w->cbp_table_index= map[cbp_index];
415 if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
416 else s->mspel= 0; //FIXME check
419 w->per_mb_abt= get_bits1(&s->gb)^1;
421 w->abt_type= decode012(&s->gb);
425 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
426 else s->per_mb_rl_table= 0;
428 if(!s->per_mb_rl_table){
429 s->rl_table_index = decode012(&s->gb);
430 s->rl_chroma_table_index = s->rl_table_index;
433 s->dc_table_index = get_bits1(&s->gb);
434 s->mv_table_index = get_bits1(&s->gb);
436 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
439 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
440 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",
442 s->rl_chroma_table_index,
451 s->inter_intra_pred);
454 s->esc3_level_length= 0;
455 s->esc3_run_length= 0;
457 if(s->avctx->debug&FF_DEBUG_SKIP){
458 for(i=0; i<s->mb_num; i++){
459 if(i%s->mb_width==0) printf("\n");
460 printf("%d", s->mb_type[i]);
463 s->picture_number++; //FIXME ?
467 // return wmv2_decode_j_picture(w); //FIXME
470 printf("J-type picture isnt supported\n");
477 static void ff_wmv2_decode_init(MpegEncContext *s){
480 static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
481 MpegEncContext * const s= &w->s;
484 ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
488 if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
489 w->hshift= get_bits1(&s->gb);
493 //printf("%d %d ", *mx_ptr, *my_ptr);
498 static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
499 MpegEncContext * const s= &w->s;
500 int xy, wrap, diff, type;
501 int16_t *A, *B, *C, *mot_val;
503 wrap = s->block_wrap[0];
504 xy = s->block_index[0];
506 mot_val = s->motion_val[xy];
508 A = s->motion_val[xy - 1];
509 B = s->motion_val[xy - wrap];
510 C = s->motion_val[xy + 2 - wrap];
512 diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
514 if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
515 type= get_bits1(&s->gb);
526 /* special case for first (slice) line */
527 if (s->first_slice_line) {
531 *px = mid_pred(A[0], B[0], C[0]);
532 *py = mid_pred(A[1], B[1], C[1]);
539 static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
540 MpegEncContext * const s= &w->s;
541 static const int sub_cbp_table[3]= {2,3,1};
545 s->block_last_index[n] = -1;
551 w->abt_type= decode012(&s->gb);
554 printf("B%d", w->abt_type);
556 w->abt_type_table[n]= w->abt_type;
559 // const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
560 const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
561 // const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
563 sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
564 // printf("S%d", sub_cbp);
567 if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
572 if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
575 s->block_last_index[n] = 63;
579 return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
583 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
584 MpegEncContext * const s= &w->s;
587 switch(w->abt_type_table[n]){
589 if (s->block_last_index[n] >= 0) {
590 s->dsp.idct_add (dst, stride, block1);
594 simple_idct84_add(dst , stride, block1);
595 simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
596 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
599 simple_idct48_add(dst , stride, block1);
600 simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
601 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
604 fprintf(stderr, "internal error in WMV2 abt\n");
608 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
609 Wmv2Context * const w= (Wmv2Context*)s;
611 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
612 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
613 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
614 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
616 if(s->flags&CODEC_FLAG_GRAY) return;
618 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
619 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
622 void ff_mspel_motion(MpegEncContext *s,
623 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
624 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
625 int motion_x, int motion_y, int h)
627 Wmv2Context * const w= (Wmv2Context*)s;
629 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
632 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
633 dxy = 2*dxy + w->hshift;
634 src_x = s->mb_x * 16 + (motion_x >> 1);
635 src_y = s->mb_y * 16 + (motion_y >> 1);
637 /* WARNING: do no forget half pels */
638 v_edge_pos = s->v_edge_pos;
639 src_x = clip(src_x, -16, s->width);
640 src_y = clip(src_y, -16, s->height);
641 linesize = s->linesize;
642 uvlinesize = s->uvlinesize;
643 ptr = ref_picture[0] + (src_y * linesize) + src_x;
645 if(s->flags&CODEC_FLAG_EMU_EDGE){
646 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
647 || src_y + h+1 >= v_edge_pos){
648 ff_emulated_edge_mc(s, ptr - 1 - s->linesize, s->linesize, 19, 19,
649 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
650 ptr= s->edge_emu_buffer + 1 + s->linesize;
655 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
656 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
657 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
658 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
660 if(s->flags&CODEC_FLAG_GRAY) return;
662 if (s->out_format == FMT_H263) {
664 if ((motion_x & 3) != 0)
666 if ((motion_y & 3) != 0)
673 dxy = ((my & 1) << 1) | (mx & 1);
678 src_x = s->mb_x * 8 + mx;
679 src_y = s->mb_y * 8 + my;
680 src_x = clip(src_x, -8, s->width >> 1);
681 if (src_x == (s->width >> 1))
683 src_y = clip(src_y, -8, s->height >> 1);
684 if (src_y == (s->height >> 1))
686 offset = (src_y * uvlinesize) + src_x;
687 ptr = ref_picture[1] + offset;
689 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
690 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
691 ptr= s->edge_emu_buffer;
693 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
695 ptr = ref_picture[2] + offset;
697 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
698 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
699 ptr= s->edge_emu_buffer;
701 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
705 static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
707 Wmv2Context * const w= (Wmv2Context*)s;
711 if(w->j_type) return 0;
713 if (s->pict_type == P_TYPE) {
714 if(s->mb_type[s->mb_y * s->mb_width + s->mb_x]&MB_TYPE_SKIPED){
718 s->block_last_index[i] = -1;
719 s->mv_dir = MV_DIR_FORWARD;
720 s->mv_type = MV_TYPE_16X16;
727 code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
730 s->mb_intra = (~code & 0x40) >> 6;
735 code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
737 fprintf(stderr, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
740 /* predict coded block pattern */
743 int val = ((code >> (5 - i)) & 1);
745 int pred = coded_block_pred(s, i, &coded_val);
749 cbp |= val << (5 - i);
755 //printf("P at %d %d\n", s->mb_x, s->mb_y);
756 wmv2_pred_motion(w, &mx, &my);
759 if(s->per_mb_rl_table){
760 s->rl_table_index = decode012(&s->gb);
761 s->rl_chroma_table_index = s->rl_table_index;
764 if(w->abt_flag && w->per_mb_abt){
765 w->per_block_abt= get_bits1(&s->gb);
766 if(!w->per_block_abt)
767 w->abt_type= decode012(&s->gb);
772 if (wmv2_decode_motion(w, &mx, &my) < 0)
775 s->mv_dir = MV_DIR_FORWARD;
776 s->mv_type = MV_TYPE_16X16;
780 for (i = 0; i < 6; i++) {
781 if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
783 fprintf(stderr,"\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
788 //if(s->pict_type==P_TYPE)
789 // printf("%d%d ", s->inter_intra_pred, cbp);
790 //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));
791 s->ac_pred = get_bits1(&s->gb);
792 if(s->inter_intra_pred){
793 s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
794 // printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
796 if(s->per_mb_rl_table && cbp){
797 s->rl_table_index = decode012(&s->gb);
798 s->rl_chroma_table_index = s->rl_table_index;
801 for (i = 0; i < 6; i++) {
802 if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
804 fprintf(stderr,"\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
813 static int wmv2_decode_init(AVCodecContext *avctx){
814 Wmv2Context * const w= avctx->priv_data;
816 if(ff_h263_decode_init(avctx) < 0)
824 AVCodec wmv2_decoder = {
832 ff_h263_decode_frame,
833 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
836 #ifdef CONFIG_ENCODERS
837 AVCodec wmv2_encoder = {