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 assert(s->flipflop_rounding);
136 if (s->pict_type == I_TYPE) {
137 assert(s->no_rounding==1);
138 if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
140 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
142 if(!s->per_mb_rl_table){
143 code012(&s->pb, s->rl_chroma_table_index);
144 code012(&s->pb, s->rl_table_index);
147 put_bits(&s->pb, 1, s->dc_table_index);
149 s->inter_intra_pred= 0;
153 put_bits(&s->pb, 2, SKIP_TYPE_NONE);
155 code012(&s->pb, cbp_index=0);
158 w->cbp_table_index= map[cbp_index];
159 }else if(s->qscale <= 20){
161 w->cbp_table_index= map[cbp_index];
164 w->cbp_table_index= map[cbp_index];
167 if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
170 put_bits(&s->pb, 1, w->per_mb_abt^1);
172 code012(&s->pb, w->abt_type);
176 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
178 if(!s->per_mb_rl_table){
179 code012(&s->pb, s->rl_table_index);
180 s->rl_chroma_table_index = s->rl_table_index;
182 put_bits(&s->pb, 1, s->dc_table_index);
183 put_bits(&s->pb, 1, s->mv_table_index);
185 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
187 s->esc3_level_length= 0;
188 s->esc3_run_length= 0;
193 // nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
194 // its duplicated here in case someone wants to add support for these carp features
195 void ff_wmv2_encode_mb(MpegEncContext * s,
196 DCTELEM block[6][64],
197 int motion_x, int motion_y)
199 Wmv2Context * const w= (Wmv2Context*)s;
200 int cbp, coded_cbp, i;
202 uint8_t *coded_block;
208 set_stat(ST_INTER_MB);
210 for (i = 0; i < 6; i++) {
211 if (s->block_last_index[i] >= 0)
216 wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
217 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
220 h263_pred_motion(s, 0, &pred_x, &pred_y);
221 msmpeg4_encode_motion(s, motion_x - pred_x,
227 for (i = 0; i < 6; i++) {
229 val = (s->block_last_index[i] >= 1);
230 cbp |= val << (5 - i);
232 /* predict value for close blocks only for luma */
233 pred = coded_block_pred(s, i, &coded_block);
237 coded_cbp |= val << (5 - i);
241 printf("cbp=%x %x\n", cbp, coded_cbp);
244 if (s->pict_type == I_TYPE) {
245 set_stat(ST_INTRA_MB);
247 table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
250 wmv2_inter_table[w->cbp_table_index][cbp][1],
251 wmv2_inter_table[w->cbp_table_index][cbp][0]);
253 set_stat(ST_INTRA_MB);
254 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
255 if(s->inter_intra_pred){
257 put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
261 for (i = 0; i < 6; i++) {
262 msmpeg4_encode_block(s, block[i], i);
265 #endif //CONFIG_ENCODERS
267 static void parse_mb_skip(Wmv2Context * w){
269 MpegEncContext * const s= &w->s;
271 w->skip_type= get_bits(&s->gb, 2);
272 switch(w->skip_type){
274 for(mb_y=0; mb_y<s->mb_height; mb_y++){
275 for(mb_x=0; mb_x<s->mb_width; mb_x++){
276 s->mb_type[mb_y*s->mb_width + mb_x]= 0;
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 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
288 for(mb_y=0; mb_y<s->mb_height; mb_y++){
289 if(get_bits1(&s->gb)){
290 for(mb_x=0; mb_x<s->mb_width; mb_x++){
291 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
294 for(mb_x=0; mb_x<s->mb_width; mb_x++){
295 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
301 for(mb_x=0; mb_x<s->mb_width; mb_x++){
302 if(get_bits1(&s->gb)){
303 for(mb_y=0; mb_y<s->mb_height; mb_y++){
304 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
307 for(mb_y=0; mb_y<s->mb_height; mb_y++){
308 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
316 static int decode_ext_header(Wmv2Context *w){
317 MpegEncContext * const s= &w->s;
322 if(s->avctx->extradata_size<4) return -1;
324 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
326 fps = get_bits(&gb, 5);
327 s->bit_rate = get_bits(&gb, 11)*1024;
328 w->mspel_bit = get_bits1(&gb);
329 w->flag3 = get_bits1(&gb);
330 w->abt_flag = get_bits1(&gb);
331 w->j_type_bit = get_bits1(&gb);
332 w->top_left_mv_flag= get_bits1(&gb);
333 w->per_mb_rl_bit = get_bits1(&gb);
334 code = get_bits(&gb, 3);
336 if(code==0) return -1;
338 s->slice_height = s->mb_height / code;
340 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
341 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",
342 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,
348 int ff_wmv2_decode_picture_header(MpegEncContext * s)
350 Wmv2Context * const w= (Wmv2Context*)s;
356 for(i=0; i<s->gb.size*8; i++)
357 printf("%d", get_bits1(&s->gb));
358 // get_bits1(&s->gb);
363 if(s->picture_number==0)
364 decode_ext_header(w);
366 s->pict_type = get_bits(&s->gb, 1) + 1;
367 if(s->pict_type == I_TYPE){
368 code = get_bits(&s->gb, 7);
369 printf("I7:%X/\n", code);
371 s->qscale = get_bits(&s->gb, 5);
373 if (s->pict_type == I_TYPE) {
374 if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
375 else w->j_type= 0; //FIXME check
378 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
379 else s->per_mb_rl_table= 0;
381 if(!s->per_mb_rl_table){
382 s->rl_chroma_table_index = decode012(&s->gb);
383 s->rl_table_index = decode012(&s->gb);
386 s->dc_table_index = get_bits1(&s->gb);
388 s->inter_intra_pred= 0;
390 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
391 printf("qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
393 s->rl_chroma_table_index,
404 cbp_index= decode012(&s->gb);
407 w->cbp_table_index= map[cbp_index];
408 }else if(s->qscale <= 20){
410 w->cbp_table_index= map[cbp_index];
413 w->cbp_table_index= map[cbp_index];
416 if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
417 else s->mspel= 0; //FIXME check
420 w->per_mb_abt= get_bits1(&s->gb)^1;
422 w->abt_type= decode012(&s->gb);
426 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
427 else s->per_mb_rl_table= 0;
429 if(!s->per_mb_rl_table){
430 s->rl_table_index = decode012(&s->gb);
431 s->rl_chroma_table_index = s->rl_table_index;
434 s->dc_table_index = get_bits1(&s->gb);
435 s->mv_table_index = get_bits1(&s->gb);
437 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
440 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
441 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",
443 s->rl_chroma_table_index,
452 s->inter_intra_pred);
455 s->esc3_level_length= 0;
456 s->esc3_run_length= 0;
458 if(s->avctx->debug&FF_DEBUG_SKIP){
459 for(i=0; i<s->mb_num; i++){
460 if(i%s->mb_width==0) printf("\n");
461 printf("%d", s->mb_type[i]);
464 s->picture_number++; //FIXME ?
468 // return wmv2_decode_j_picture(w); //FIXME
471 printf("J-type picture isnt supported\n");
478 static void ff_wmv2_decode_init(MpegEncContext *s){
481 static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
482 MpegEncContext * const s= &w->s;
485 ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
489 if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
490 w->hshift= get_bits1(&s->gb);
494 //printf("%d %d ", *mx_ptr, *my_ptr);
499 static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
500 MpegEncContext * const s= &w->s;
501 int xy, wrap, diff, type;
502 int16_t *A, *B, *C, *mot_val;
504 wrap = s->block_wrap[0];
505 xy = s->block_index[0];
507 mot_val = s->motion_val[xy];
509 A = s->motion_val[xy - 1];
510 B = s->motion_val[xy - wrap];
511 C = s->motion_val[xy + 2 - wrap];
513 diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
515 if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
516 type= get_bits1(&s->gb);
527 /* special case for first (slice) line */
528 if (s->first_slice_line) {
532 *px = mid_pred(A[0], B[0], C[0]);
533 *py = mid_pred(A[1], B[1], C[1]);
540 static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
541 MpegEncContext * const s= &w->s;
542 static const int sub_cbp_table[3]= {2,3,1};
546 s->block_last_index[n] = -1;
552 w->abt_type= decode012(&s->gb);
555 printf("B%d", w->abt_type);
557 w->abt_type_table[n]= w->abt_type;
560 // const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
561 const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
562 // const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
564 sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
565 // printf("S%d", sub_cbp);
568 if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
573 if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
576 s->block_last_index[n] = 63;
580 return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
584 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
585 MpegEncContext * const s= &w->s;
588 switch(w->abt_type_table[n]){
590 if (s->block_last_index[n] >= 0) {
591 s->dsp.idct_add (dst, stride, block1);
595 simple_idct84_add(dst , stride, block1);
596 simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
597 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
600 simple_idct48_add(dst , stride, block1);
601 simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
602 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
605 fprintf(stderr, "internal error in WMV2 abt\n");
609 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
610 Wmv2Context * const w= (Wmv2Context*)s;
612 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
613 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
614 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
615 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
617 if(s->flags&CODEC_FLAG_GRAY) return;
619 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
620 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
623 void ff_mspel_motion(MpegEncContext *s,
624 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
625 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
626 int motion_x, int motion_y, int h)
628 Wmv2Context * const w= (Wmv2Context*)s;
630 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
633 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
634 dxy = 2*dxy + w->hshift;
635 src_x = s->mb_x * 16 + (motion_x >> 1);
636 src_y = s->mb_y * 16 + (motion_y >> 1);
638 /* WARNING: do no forget half pels */
639 v_edge_pos = s->v_edge_pos;
640 src_x = clip(src_x, -16, s->width);
641 src_y = clip(src_y, -16, s->height);
642 linesize = s->linesize;
643 uvlinesize = s->uvlinesize;
644 ptr = ref_picture[0] + (src_y * linesize) + src_x;
646 if(s->flags&CODEC_FLAG_EMU_EDGE){
647 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
648 || src_y + h+1 >= v_edge_pos){
649 ff_emulated_edge_mc(s, ptr - 1 - s->linesize, s->linesize, 19, 19,
650 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
651 ptr= s->edge_emu_buffer + 1 + s->linesize;
656 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
657 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
658 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
659 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
661 if(s->flags&CODEC_FLAG_GRAY) return;
663 if (s->out_format == FMT_H263) {
665 if ((motion_x & 3) != 0)
667 if ((motion_y & 3) != 0)
674 dxy = ((my & 1) << 1) | (mx & 1);
679 src_x = s->mb_x * 8 + mx;
680 src_y = s->mb_y * 8 + my;
681 src_x = clip(src_x, -8, s->width >> 1);
682 if (src_x == (s->width >> 1))
684 src_y = clip(src_y, -8, s->height >> 1);
685 if (src_y == (s->height >> 1))
687 offset = (src_y * uvlinesize) + src_x;
688 ptr = ref_picture[1] + offset;
690 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
691 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
692 ptr= s->edge_emu_buffer;
694 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
696 ptr = ref_picture[2] + offset;
698 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
699 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
700 ptr= s->edge_emu_buffer;
702 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
706 static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
708 Wmv2Context * const w= (Wmv2Context*)s;
712 if(w->j_type) return 0;
714 if (s->pict_type == P_TYPE) {
715 if(s->mb_type[s->mb_y * s->mb_width + s->mb_x]&MB_TYPE_SKIPED){
719 s->block_last_index[i] = -1;
720 s->mv_dir = MV_DIR_FORWARD;
721 s->mv_type = MV_TYPE_16X16;
728 code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
731 s->mb_intra = (~code & 0x40) >> 6;
736 code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
738 fprintf(stderr, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
741 /* predict coded block pattern */
744 int val = ((code >> (5 - i)) & 1);
746 int pred = coded_block_pred(s, i, &coded_val);
750 cbp |= val << (5 - i);
756 //printf("P at %d %d\n", s->mb_x, s->mb_y);
757 wmv2_pred_motion(w, &mx, &my);
760 if(s->per_mb_rl_table){
761 s->rl_table_index = decode012(&s->gb);
762 s->rl_chroma_table_index = s->rl_table_index;
765 if(w->abt_flag && w->per_mb_abt){
766 w->per_block_abt= get_bits1(&s->gb);
767 if(!w->per_block_abt)
768 w->abt_type= decode012(&s->gb);
773 if (wmv2_decode_motion(w, &mx, &my) < 0)
776 s->mv_dir = MV_DIR_FORWARD;
777 s->mv_type = MV_TYPE_16X16;
781 for (i = 0; i < 6; i++) {
782 if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
784 fprintf(stderr,"\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
789 //if(s->pict_type==P_TYPE)
790 // printf("%d%d ", s->inter_intra_pred, cbp);
791 //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));
792 s->ac_pred = get_bits1(&s->gb);
793 if(s->inter_intra_pred){
794 s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
795 // printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
797 if(s->per_mb_rl_table && cbp){
798 s->rl_table_index = decode012(&s->gb);
799 s->rl_chroma_table_index = s->rl_table_index;
802 for (i = 0; i < 6; i++) {
803 if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
805 fprintf(stderr,"\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
814 static int wmv2_decode_init(AVCodecContext *avctx){
815 Wmv2Context * const w= avctx->priv_data;
817 if(ff_h263_decode_init(avctx) < 0)
825 AVCodec wmv2_decoder = {
833 ff_h263_decode_frame,
834 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
837 #ifdef CONFIG_ENCODERS
838 AVCodec wmv2_encoder = {