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
20 #include "simple_idct.h"
22 #define SKIP_TYPE_NONE 0
23 #define SKIP_TYPE_MPEG 1
24 #define SKIP_TYPE_ROW 2
25 #define SKIP_TYPE_COL 3
28 typedef struct Wmv2Context{
36 int abt_type_table[6];
46 ScanTable abt_scantable[2];
47 DCTELEM abt_block2[6][64] __align8;
50 static void wmv2_common_init(Wmv2Context * w){
51 MpegEncContext * const s= &w->s;
53 ff_init_scantable(s, &w->abt_scantable[0], wmv2_scantableA);
54 ff_init_scantable(s, &w->abt_scantable[1], wmv2_scantableB);
57 static int encode_ext_header(Wmv2Context *w){
58 MpegEncContext * const s= &w->s;
62 init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size, NULL, NULL);
64 put_bits(&pb, 5, s->frame_rate / FRAME_RATE_BASE); //yes 29.97 -> 29
65 put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
67 put_bits(&pb, 1, w->mspel_bit=1);
68 put_bits(&pb, 1, w->flag3=1);
69 put_bits(&pb, 1, w->abt_flag=1);
70 put_bits(&pb, 1, w->j_type_bit=1);
71 put_bits(&pb, 1, w->top_left_mv_flag=0);
72 put_bits(&pb, 1, w->per_mb_rl_bit=1);
73 put_bits(&pb, 3, code=1);
77 s->slice_height = s->mb_height / code;
82 static int wmv2_encode_init(AVCodecContext *avctx){
83 Wmv2Context * const w= avctx->priv_data;
85 if(MPV_encode_init(avctx) < 0)
90 avctx->extradata_size= 4;
91 avctx->extradata= av_mallocz(avctx->extradata_size + 10);
97 static int wmv2_encode_end(AVCodecContext *avctx){
98 Wmv2Context * const w= avctx->priv_data;
100 if(MPV_encode_end(avctx) < 0)
103 avctx->extradata_size= 0;
104 av_freep(&avctx->extradata);
109 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
111 Wmv2Context * const w= (Wmv2Context*)s;
113 put_bits(&s->pb, 1, s->pict_type - 1);
114 if(s->pict_type == I_TYPE){
115 put_bits(&s->pb, 7, 0);
117 put_bits(&s->pb, 5, s->qscale);
119 s->dc_table_index = 1;
120 s->mv_table_index = 1; /* only if P frame */
121 // s->use_skip_mb_code = 1; /* only if P frame */
122 s->per_mb_rl_table = 0;
128 if (s->pict_type == I_TYPE) {
129 if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
131 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
133 if(!s->per_mb_rl_table){
134 code012(&s->pb, s->rl_chroma_table_index);
135 code012(&s->pb, s->rl_table_index);
138 put_bits(&s->pb, 1, s->dc_table_index);
140 s->inter_intra_pred= 0;
145 put_bits(&s->pb, 2, SKIP_TYPE_NONE);
147 code012(&s->pb, cbp_index=0);
150 w->cbp_table_index= map[cbp_index];
151 }else if(s->qscale <= 20){
153 w->cbp_table_index= map[cbp_index];
156 w->cbp_table_index= map[cbp_index];
159 if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
162 put_bits(&s->pb, 1, w->per_mb_abt^1);
164 code012(&s->pb, w->abt_type);
168 if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
170 if(!s->per_mb_rl_table){
171 code012(&s->pb, s->rl_table_index);
172 s->rl_chroma_table_index = s->rl_table_index;
174 put_bits(&s->pb, 1, s->dc_table_index);
175 put_bits(&s->pb, 1, s->mv_table_index);
177 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
180 s->esc3_level_length= 0;
181 s->esc3_run_length= 0;
186 // nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
187 // its duplicated here in case someone wants to add support for these carp features
188 void ff_wmv2_encode_mb(MpegEncContext * s,
189 DCTELEM block[6][64],
190 int motion_x, int motion_y)
192 Wmv2Context * const w= (Wmv2Context*)s;
193 int cbp, coded_cbp, i;
201 set_stat(ST_INTER_MB);
203 for (i = 0; i < 6; i++) {
204 if (s->block_last_index[i] >= 0)
209 wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
210 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
213 h263_pred_motion(s, 0, &pred_x, &pred_y);
214 msmpeg4_encode_motion(s, motion_x - pred_x,
220 for (i = 0; i < 6; i++) {
222 val = (s->block_last_index[i] >= 1);
223 cbp |= val << (5 - i);
225 /* predict value for close blocks only for luma */
226 pred = coded_block_pred(s, i, &coded_block);
230 coded_cbp |= val << (5 - i);
234 printf("cbp=%x %x\n", cbp, coded_cbp);
237 if (s->pict_type == I_TYPE) {
238 set_stat(ST_INTRA_MB);
240 table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
243 wmv2_inter_table[w->cbp_table_index][cbp][1],
244 wmv2_inter_table[w->cbp_table_index][cbp][0]);
246 set_stat(ST_INTRA_MB);
247 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
248 if(s->inter_intra_pred){
250 put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
254 for (i = 0; i < 6; i++) {
255 msmpeg4_encode_block(s, block[i], i);
259 static void parse_mb_skip(Wmv2Context * w){
261 MpegEncContext * const s= &w->s;
263 w->skip_type= get_bits(&s->gb, 2);
264 switch(w->skip_type){
266 for(mb_y=0; mb_y<s->mb_height; mb_y++){
267 for(mb_x=0; mb_x<s->mb_width; mb_x++){
268 s->mb_type[mb_y*s->mb_width + mb_x]= 0;
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]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
280 for(mb_y=0; mb_y<s->mb_height; mb_y++){
281 if(get_bits1(&s->gb)){
282 for(mb_x=0; mb_x<s->mb_width; mb_x++){
283 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
286 for(mb_x=0; mb_x<s->mb_width; mb_x++){
287 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
293 for(mb_x=0; mb_x<s->mb_width; mb_x++){
294 if(get_bits1(&s->gb)){
295 for(mb_y=0; mb_y<s->mb_height; mb_y++){
296 s->mb_type[mb_y*s->mb_width + mb_x]= MB_TYPE_SKIPED;
299 for(mb_y=0; mb_y<s->mb_height; mb_y++){
300 s->mb_type[mb_y*s->mb_width + mb_x]= get_bits1(&s->gb) ? MB_TYPE_SKIPED : 0;
308 static int decode_ext_header(Wmv2Context *w){
309 MpegEncContext * const s= &w->s;
314 if(s->avctx->extradata_size<4) return -1;
316 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size);
318 fps = get_bits(&gb, 5);
319 s->bit_rate = get_bits(&gb, 11)*1024;
320 w->mspel_bit = get_bits1(&gb);
321 w->flag3 = get_bits1(&gb);
322 w->abt_flag = get_bits1(&gb);
323 w->j_type_bit = get_bits1(&gb);
324 w->top_left_mv_flag= get_bits1(&gb);
325 w->per_mb_rl_bit = get_bits1(&gb);
326 code = get_bits(&gb, 3);
328 if(code==0) return -1;
330 s->slice_height = s->mb_height / code;
332 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
333 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",
334 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,
340 int ff_wmv2_decode_picture_header(MpegEncContext * s)
342 Wmv2Context * const w= (Wmv2Context*)s;
348 for(i=0; i<s->gb.size*8; i++)
349 printf("%d", get_bits1(&s->gb));
350 // get_bits1(&s->gb);
355 if(s->picture_number==0)
356 decode_ext_header(w);
358 s->pict_type = get_bits(&s->gb, 1) + 1;
359 if(s->pict_type == I_TYPE){
360 code = get_bits(&s->gb, 7);
361 printf("I7:%X/\n", code);
363 s->qscale = get_bits(&s->gb, 5);
365 if (s->pict_type == I_TYPE) {
366 if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
367 else w->j_type= 0; //FIXME check
370 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
371 else s->per_mb_rl_table= 0;
373 if(!s->per_mb_rl_table){
374 s->rl_chroma_table_index = decode012(&s->gb);
375 s->rl_table_index = decode012(&s->gb);
378 s->dc_table_index = get_bits1(&s->gb);
380 s->inter_intra_pred= 0;
382 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
383 printf("qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
385 s->rl_chroma_table_index,
396 cbp_index= decode012(&s->gb);
399 w->cbp_table_index= map[cbp_index];
400 }else if(s->qscale <= 20){
402 w->cbp_table_index= map[cbp_index];
405 w->cbp_table_index= map[cbp_index];
408 if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
409 else s->mspel= 0; //FIXME check
412 w->per_mb_abt= get_bits1(&s->gb)^1;
414 w->abt_type= decode012(&s->gb);
418 if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
419 else s->per_mb_rl_table= 0;
421 if(!s->per_mb_rl_table){
422 s->rl_table_index = decode012(&s->gb);
423 s->rl_chroma_table_index = s->rl_table_index;
426 s->dc_table_index = get_bits1(&s->gb);
427 s->mv_table_index = get_bits1(&s->gb);
429 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
432 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
433 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",
435 s->rl_chroma_table_index,
444 s->inter_intra_pred);
447 s->esc3_level_length= 0;
448 s->esc3_run_length= 0;
450 if(s->avctx->debug&FF_DEBUG_SKIP){
451 for(i=0; i<s->mb_num; i++){
452 if(i%s->mb_width==0) printf("\n");
453 printf("%d", s->mb_type[i]);
456 s->picture_number++; //FIXME ?
460 // return wmv2_decode_j_picture(w); //FIXME
463 printf("J-type picture isnt supported\n");
470 void ff_wmv2_decode_init(MpegEncContext *s){
473 static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
474 MpegEncContext * const s= &w->s;
477 ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
481 if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
482 w->hshift= get_bits1(&s->gb);
486 //printf("%d %d ", *mx_ptr, *my_ptr);
491 static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
492 MpegEncContext * const s= &w->s;
493 int xy, wrap, diff, type;
494 INT16 *A, *B, *C, *mot_val;
496 wrap = s->block_wrap[0];
497 xy = s->block_index[0];
499 mot_val = s->motion_val[xy];
501 A = s->motion_val[xy - 1];
502 B = s->motion_val[xy - wrap];
503 C = s->motion_val[xy + 2 - wrap];
505 diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
507 if(s->mb_x && s->mb_y && !s->mspel && w->top_left_mv_flag && diff >= 8)
508 //FIXME top/left bit too if y=!0 && first_slice_line?
509 type= get_bits1(&s->gb);
520 /* special case for first (slice) line */
521 if (s->first_slice_line) {
525 *px = mid_pred(A[0], B[0], C[0]);
526 *py = mid_pred(A[1], B[1], C[1]);
533 static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
534 MpegEncContext * const s= &w->s;
535 static const int sub_cbp_table[3]= {2,3,1};
539 s->block_last_index[n] = -1;
545 w->abt_type= decode012(&s->gb);
548 printf("B%d", w->abt_type);
550 w->abt_type_table[n]= w->abt_type;
553 // const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
554 const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
555 // const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
557 sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
558 // printf("S%d", sub_cbp);
561 if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
566 if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
569 s->block_last_index[n] = 63;
573 return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
577 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
578 MpegEncContext * const s= &w->s;
582 switch(w->abt_type_table[n]){
584 if (s->block_last_index[n] >= 0) {
585 s->idct_add (dst, stride, block1);
589 simple_idct84_add(dst , stride, block1);
590 simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
591 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
594 simple_idct48_add(dst , stride, block1);
595 simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
596 memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
599 fprintf(stderr, "internal error in WMV2 abt\n");
603 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
604 Wmv2Context * const w= (Wmv2Context*)s;
606 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
607 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
608 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
609 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
611 if(s->flags&CODEC_FLAG_GRAY) return;
613 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
614 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
617 void ff_mspel_motion(MpegEncContext *s,
618 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
619 UINT8 **ref_picture, op_pixels_func (*pix_op)[4],
620 int motion_x, int motion_y, int h)
622 Wmv2Context * const w= (Wmv2Context*)s;
624 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
627 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
628 dxy = 2*dxy + w->hshift;
629 src_x = s->mb_x * 16 + (motion_x >> 1);
630 src_y = s->mb_y * 16 + (motion_y >> 1);
632 /* WARNING: do no forget half pels */
633 v_edge_pos = s->v_edge_pos;
634 src_x = clip(src_x, -16, s->width);
635 src_y = clip(src_y, -16, s->height);
636 linesize = s->linesize;
637 uvlinesize = s->uvlinesize;
638 ptr = ref_picture[0] + (src_y * linesize) + src_x;
640 if(s->flags&CODEC_FLAG_EMU_EDGE){
641 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
642 || src_y + h+1 >= v_edge_pos){
643 ff_emulated_edge_mc(s, ptr - 1 - s->linesize, s->linesize, 19, 19,
644 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
645 ptr= s->edge_emu_buffer + 1 + s->linesize;
650 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
651 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
652 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
653 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
655 if(s->flags&CODEC_FLAG_GRAY) return;
657 if (s->out_format == FMT_H263) {
659 if ((motion_x & 3) != 0)
661 if ((motion_y & 3) != 0)
668 dxy = ((my & 1) << 1) | (mx & 1);
673 src_x = s->mb_x * 8 + mx;
674 src_y = s->mb_y * 8 + my;
675 src_x = clip(src_x, -8, s->width >> 1);
676 if (src_x == (s->width >> 1))
678 src_y = clip(src_y, -8, s->height >> 1);
679 if (src_y == (s->height >> 1))
681 offset = (src_y * uvlinesize) + src_x;
682 ptr = ref_picture[1] + offset;
684 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
685 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
686 ptr= s->edge_emu_buffer;
688 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
690 ptr = ref_picture[2] + offset;
692 ff_emulated_edge_mc(s, ptr, s->uvlinesize, 9, 9,
693 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
694 ptr= s->edge_emu_buffer;
696 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
700 static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
702 Wmv2Context * const w= (Wmv2Context*)s;
706 if(w->j_type) return 0;
708 s->error_status_table[s->mb_x + s->mb_y*s->mb_width]= 0;
710 if (s->pict_type == P_TYPE) {
711 if(s->mb_type[s->mb_y * s->mb_width + s->mb_x]&MB_TYPE_SKIPED){
715 s->block_last_index[i] = -1;
716 s->mv_dir = MV_DIR_FORWARD;
717 s->mv_type = MV_TYPE_16X16;
724 code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
727 s->mb_intra = (~code & 0x40) >> 6;
732 code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
734 fprintf(stderr, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
737 /* predict coded block pattern */
740 int val = ((code >> (5 - i)) & 1);
742 int pred = coded_block_pred(s, i, &coded_val);
746 cbp |= val << (5 - i);
752 //printf("P at %d %d\n", s->mb_x, s->mb_y);
753 wmv2_pred_motion(w, &mx, &my);
756 if(s->per_mb_rl_table){
757 s->rl_table_index = decode012(&s->gb);
758 s->rl_chroma_table_index = s->rl_table_index;
761 if(w->abt_flag && w->per_mb_abt){
762 w->per_block_abt= get_bits1(&s->gb);
763 if(!w->per_block_abt)
764 w->abt_type= decode012(&s->gb);
769 if (wmv2_decode_motion(w, &mx, &my) < 0)
772 s->mv_dir = MV_DIR_FORWARD;
773 s->mv_type = MV_TYPE_16X16;
777 for (i = 0; i < 6; i++) {
778 if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
780 fprintf(stderr,"\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
785 //if(s->pict_type==P_TYPE)
786 // printf("%d%d ", s->inter_intra_pred, cbp);
787 //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));
788 s->ac_pred = get_bits1(&s->gb);
789 if(s->inter_intra_pred){
790 s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
791 // printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
793 if(s->per_mb_rl_table && cbp){
794 s->rl_table_index = decode012(&s->gb);
795 s->rl_chroma_table_index = s->rl_table_index;
798 for (i = 0; i < 6; i++) {
799 if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
801 fprintf(stderr,"\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
810 static int wmv2_decode_init(AVCodecContext *avctx){
811 Wmv2Context * const w= avctx->priv_data;
813 if(ff_h263_decode_init(avctx) < 0)
821 AVCodec wmv2_decoder = {
829 ff_h263_decode_frame,
830 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
833 AVCodec wmv2_encoder = {