3 * Copyright (c) 2001 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This library 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 of the License, or (at your option) any later version.
11 * This library 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 this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "mpegvideo.h"
31 //#define PRINT_FRAME_TIME
33 int ff_h263_decode_init(AVCodecContext *avctx)
35 MpegEncContext *s = avctx->priv_data;
38 s->out_format = FMT_H263;
40 s->width = avctx->coded_width;
41 s->height = avctx->coded_height;
42 s->workaround_bugs= avctx->workaround_bugs;
45 MPV_decode_defaults(s);
47 s->decode_mb= ff_h263_decode_mb;
49 avctx->pix_fmt= PIX_FMT_YUV420P;
50 s->unrestricted_mv= 1;
52 /* select sub codec */
53 switch(avctx->codec->id) {
55 s->unrestricted_mv= 0;
58 s->decode_mb= ff_mpeg4_decode_mb;
59 s->time_increment_bits = 4; /* default value for broken headers */
61 s->low_delay = 0; //default, might be overriden in the vol header during header parsing
63 case CODEC_ID_MSMPEG4V1:
68 case CODEC_ID_MSMPEG4V2:
73 case CODEC_ID_MSMPEG4V3:
101 s->codec_id= avctx->codec->id;
103 /* for h263, we allocate the images after having read the header */
104 if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
105 if (MPV_common_init(s) < 0)
109 ff_msmpeg4_decode_init(s);
111 h263_decode_init_vlc(s);
116 int ff_h263_decode_end(AVCodecContext *avctx)
118 MpegEncContext *s = avctx->priv_data;
125 * retunrs the number of bytes consumed for building the current frame
127 static int get_consumed_bytes(MpegEncContext *s, int buf_size){
128 int pos= (get_bits_count(&s->gb)+7)>>3;
131 //we would have to scan through the whole buf to handle the weird reordering ...
133 }else if(s->flags&CODEC_FLAG_TRUNCATED){
134 pos -= s->parse_context.last_index;
135 if(pos<0) pos=0; // padding is not really read so this might be -1
138 if(pos==0) pos=1; //avoid infinite loops (i doubt thats needed but ...)
139 if(pos+10>buf_size) pos=buf_size; // oops ;)
145 static int decode_slice(MpegEncContext *s){
146 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
147 const int mb_size= 16>>s->avctx->lowres;
148 s->last_resync_gb= s->gb;
149 s->first_slice_line= 1;
151 s->resync_mb_x= s->mb_x;
152 s->resync_mb_y= s->mb_y;
154 ff_set_qscale(s, s->qscale);
156 if(s->partitioned_frame){
157 const int qscale= s->qscale;
159 if(s->codec_id==CODEC_ID_MPEG4){
160 if(ff_mpeg4_decode_partitions(s) < 0)
164 /* restore variables which were modified */
165 s->first_slice_line=1;
166 s->mb_x= s->resync_mb_x;
167 s->mb_y= s->resync_mb_y;
168 ff_set_qscale(s, qscale);
171 for(; s->mb_y < s->mb_height; s->mb_y++) {
172 /* per-row end of slice checks */
173 if(s->msmpeg4_version){
174 if(s->resync_mb_y + s->slice_height == s->mb_y){
175 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
181 if(s->msmpeg4_version==1){
187 ff_init_block_index(s);
188 for(; s->mb_x < s->mb_width; s->mb_x++) {
191 ff_update_block_index(s);
193 if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){
194 s->first_slice_line=0;
198 s->dsp.clear_blocks(s->block[0]);
200 s->mv_dir = MV_DIR_FORWARD;
201 s->mv_type = MV_TYPE_16X16;
203 //printf("%d %d %06X\n", ret, get_bits_count(&s->gb), show_bits(&s->gb, 24));
204 ret= s->decode_mb(s, s->block);
206 if (s->pict_type!=B_TYPE)
207 ff_h263_update_motion_val(s);
210 const int xy= s->mb_x + s->mb_y*s->mb_stride;
212 MPV_decode_mb(s, s->block);
214 ff_h263_loop_filter(s);
216 //printf("%d %d %d %06X\n", s->mb_x, s->mb_y, s->gb.size*8 - get_bits_count(&s->gb), show_bits(&s->gb, 24));
217 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
219 s->padding_bug_score--;
221 if(++s->mb_x >= s->mb_width){
223 ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
227 }else if(ret==SLICE_NOEND){
228 av_log(s->avctx, AV_LOG_ERROR, "Slice mismatch at MB: %d\n", xy);
229 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x+1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
232 av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
233 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
238 MPV_decode_mb(s, s->block);
240 ff_h263_loop_filter(s);
243 ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
248 assert(s->mb_x==0 && s->mb_y==s->mb_height);
250 /* try to detect the padding bug */
251 if( s->codec_id==CODEC_ID_MPEG4
252 && (s->workaround_bugs&FF_BUG_AUTODETECT)
253 && s->gb.size_in_bits - get_bits_count(&s->gb) >=0
254 && s->gb.size_in_bits - get_bits_count(&s->gb) < 48
255 // && !s->resync_marker
256 && !s->data_partitioning){
258 const int bits_count= get_bits_count(&s->gb);
259 const int bits_left = s->gb.size_in_bits - bits_count;
262 s->padding_bug_score+=16;
263 } else if(bits_left != 1){
264 int v= show_bits(&s->gb, 8);
265 v|= 0x7F >> (7-(bits_count&7));
267 if(v==0x7F && bits_left<=8)
268 s->padding_bug_score--;
269 else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16)
270 s->padding_bug_score+= 4;
272 s->padding_bug_score++;
276 if(s->workaround_bugs&FF_BUG_AUTODETECT){
277 if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version || !s->resync_marker)*/)
278 s->workaround_bugs |= FF_BUG_NO_PADDING;
280 s->workaround_bugs &= ~FF_BUG_NO_PADDING;
283 // handle formats which dont have unique end markers
284 if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly
285 int left= s->gb.size_in_bits - get_bits_count(&s->gb);
288 /* no markers in M$ crap */
289 if(s->msmpeg4_version && s->pict_type==I_TYPE)
292 /* buggy padding but the frame should still end approximately at the bitstream end */
293 if((s->workaround_bugs&FF_BUG_NO_PADDING) && s->error_resilience>=3)
295 else if((s->workaround_bugs&FF_BUG_NO_PADDING))
296 max_extra+= 256*256*256*64;
299 av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
302 av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
304 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
309 av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
310 s->gb.size_in_bits - get_bits_count(&s->gb),
311 show_bits(&s->gb, 24), s->padding_bug_score);
313 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
319 * finds the end of the current frame in the bitstream.
320 * @return the position of the first byte of the next frame, or -1
322 int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
326 vop_found= pc->frame_start_found;
331 for(i=0; i<buf_size; i++){
332 state= (state<<8) | buf[i];
342 /* EOF considered as end of frame */
345 for(; i<buf_size; i++){
346 state= (state<<8) | buf[i];
347 if((state&0xFFFFFF00) == 0x100){
348 pc->frame_start_found=0;
354 pc->frame_start_found= vop_found;
356 return END_NOT_FOUND;
359 static int h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
363 vop_found= pc->frame_start_found;
368 for(i=0; i<buf_size; i++){
369 state= (state<<8) | buf[i];
370 if(state>>(32-22) == 0x20){
379 for(; i<buf_size; i++){
380 state= (state<<8) | buf[i];
381 if(state>>(32-22) == 0x20){
382 pc->frame_start_found=0;
388 pc->frame_start_found= vop_found;
391 return END_NOT_FOUND;
394 static int h263_parse(AVCodecParserContext *s,
395 AVCodecContext *avctx,
396 uint8_t **poutbuf, int *poutbuf_size,
397 const uint8_t *buf, int buf_size)
399 ParseContext *pc = s->priv_data;
402 next= h263_find_frame_end(pc, buf, buf_size);
404 if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
410 *poutbuf = (uint8_t *)buf;
411 *poutbuf_size = buf_size;
415 int ff_h263_decode_frame(AVCodecContext *avctx,
416 void *data, int *data_size,
417 uint8_t *buf, int buf_size)
419 MpegEncContext *s = avctx->priv_data;
421 AVFrame *pict = data;
423 #ifdef PRINT_FRAME_TIME
424 uint64_t time= rdtsc();
427 printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
428 printf("bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
430 s->flags= avctx->flags;
431 s->flags2= avctx->flags2;
433 /* no supplementary picture */
435 /* special case for last picture */
436 if (s->low_delay==0 && s->next_picture_ptr) {
437 *pict= *(AVFrame*)s->next_picture_ptr;
438 s->next_picture_ptr= NULL;
440 *data_size = sizeof(AVFrame);
446 if(s->flags&CODEC_FLAG_TRUNCATED){
449 if(s->codec_id==CODEC_ID_MPEG4){
450 next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
451 }else if(s->codec_id==CODEC_ID_H263){
452 next= h263_find_frame_end(&s->parse_context, buf, buf_size);
454 av_log(s->avctx, AV_LOG_ERROR, "this codec doesnt support truncated bitstreams\n");
458 if( ff_combine_frame(&s->parse_context, next, &buf, &buf_size) < 0 )
465 if(s->bitstream_buffer_size && (s->divx_packed || buf_size<20)){ //divx 5.01+/xvid frame reorder
466 init_get_bits(&s->gb, s->bitstream_buffer, s->bitstream_buffer_size*8);
468 init_get_bits(&s->gb, buf, buf_size*8);
469 s->bitstream_buffer_size=0;
471 if (!s->context_initialized) {
472 if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
476 //we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
477 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
478 int i= ff_find_unused_picture(s, 0);
479 s->current_picture_ptr= &s->picture[i];
483 if (s->msmpeg4_version==5) {
484 ret= ff_wmv2_decode_picture_header(s);
485 } else if (s->msmpeg4_version) {
486 ret = msmpeg4_decode_picture_header(s);
487 } else if (s->h263_pred) {
488 if(s->avctx->extradata_size && s->picture_number==0){
491 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
492 ret = ff_mpeg4_decode_picture_header(s, &gb);
494 ret = ff_mpeg4_decode_picture_header(s, &s->gb);
496 if(s->flags& CODEC_FLAG_LOW_DELAY)
498 } else if (s->codec_id == CODEC_ID_H263I) {
499 ret = intel_h263_decode_picture_header(s);
500 } else if (s->h263_flv) {
501 ret = flv_h263_decode_picture_header(s);
503 ret = h263_decode_picture_header(s);
506 if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_size);
508 /* skip if the header was thrashed */
510 av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
514 avctx->has_b_frames= !s->low_delay;
516 if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
517 if(s->avctx->stream_codec_tag == ff_get_fourcc("XVID") ||
518 s->avctx->codec_tag == ff_get_fourcc("XVID") || s->avctx->codec_tag == ff_get_fourcc("XVIX"))
521 if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==1
522 && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
527 if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
528 if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
529 s->divx_version= 400; //divx 4
532 if(s->xvid_build && s->divx_version){
537 if(s->workaround_bugs&FF_BUG_AUTODETECT){
538 if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
539 s->workaround_bugs|= FF_BUG_XVID_ILACE;
541 if(s->avctx->codec_tag == ff_get_fourcc("UMP4")){
542 s->workaround_bugs|= FF_BUG_UMP4;
545 if(s->divx_version>=500){
546 s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
549 if(s->divx_version>502){
550 s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
553 if(s->xvid_build && s->xvid_build<=3)
554 s->padding_bug_score= 256*256*256*64;
556 if(s->xvid_build && s->xvid_build<=1)
557 s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
559 if(s->xvid_build && s->xvid_build<=12)
560 s->workaround_bugs|= FF_BUG_EDGE;
562 if(s->xvid_build && s->xvid_build<=32)
563 s->workaround_bugs|= FF_BUG_DC_CLIP;
565 #define SET_QPEL_FUNC(postfix1, postfix2) \
566 s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
567 s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
568 s->dsp.avg_ ## postfix1 = ff_avg_ ## postfix2;
570 if(s->lavc_build && s->lavc_build<4653)
571 s->workaround_bugs|= FF_BUG_STD_QPEL;
573 if(s->lavc_build && s->lavc_build<4655)
574 s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
576 if(s->lavc_build && s->lavc_build<4670){
577 s->workaround_bugs|= FF_BUG_EDGE;
580 if(s->lavc_build && s->lavc_build<=4712)
581 s->workaround_bugs|= FF_BUG_DC_CLIP;
584 s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
585 //printf("padding_bug_score: %d\n", s->padding_bug_score);
586 if(s->divx_version==501 && s->divx_build==20020416)
587 s->padding_bug_score= 256*256*256*64;
589 if(s->divx_version && s->divx_version<500){
590 s->workaround_bugs|= FF_BUG_EDGE;
594 s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
596 if(s->divx_version==500)
597 s->padding_bug_score= 256*256*256*64;
599 /* very ugly XVID padding bug detection FIXME/XXX solve this differently
600 * lets hope this at least works
602 if( s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==0
603 && s->codec_id==CODEC_ID_MPEG4 && s->vo_type==0)
604 s->workaround_bugs|= FF_BUG_NO_PADDING;
606 if(s->lavc_build && s->lavc_build<4609) //FIXME not sure about the version num but a 4609 file seems ok
607 s->workaround_bugs|= FF_BUG_NO_PADDING;
611 if(s->workaround_bugs& FF_BUG_STD_QPEL){
612 SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c)
613 SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c)
614 SET_QPEL_FUNC(qpel_pixels_tab[0][ 9], qpel16_mc12_old_c)
615 SET_QPEL_FUNC(qpel_pixels_tab[0][11], qpel16_mc32_old_c)
616 SET_QPEL_FUNC(qpel_pixels_tab[0][13], qpel16_mc13_old_c)
617 SET_QPEL_FUNC(qpel_pixels_tab[0][15], qpel16_mc33_old_c)
619 SET_QPEL_FUNC(qpel_pixels_tab[1][ 5], qpel8_mc11_old_c)
620 SET_QPEL_FUNC(qpel_pixels_tab[1][ 7], qpel8_mc31_old_c)
621 SET_QPEL_FUNC(qpel_pixels_tab[1][ 9], qpel8_mc12_old_c)
622 SET_QPEL_FUNC(qpel_pixels_tab[1][11], qpel8_mc32_old_c)
623 SET_QPEL_FUNC(qpel_pixels_tab[1][13], qpel8_mc13_old_c)
624 SET_QPEL_FUNC(qpel_pixels_tab[1][15], qpel8_mc33_old_c)
627 if(avctx->debug & FF_DEBUG_BUGS)
628 av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n",
629 s->workaround_bugs, s->lavc_build, s->xvid_build, s->divx_version, s->divx_build,
630 s->divx_packed ? "p" : "");
632 #if 0 // dump bits per frame / qp / complexity
635 if(!f) f=fopen("rate_qp_cplx.txt", "w");
636 fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size*(double)s->qscale);
641 if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & MM_MMX) && !(s->flags&CODEC_FLAG_BITEXACT)){
642 avctx->idct_algo= FF_IDCT_LIBMPEG2MMX;
643 avctx->coded_width= 0; // force reinit
647 /* After H263 & mpeg4 header decode we have the height, width,*/
648 /* and other parameters. So then we could init the picture */
649 /* FIXME: By the way H263 decoder is evolving it should have */
650 /* an H263EncContext */
652 if ( s->width != avctx->coded_width
653 || s->height != avctx->coded_height) {
654 /* H.263 could change picture size any time */
655 ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat
656 s->parse_context.buffer=0;
658 s->parse_context= pc;
660 if (!s->context_initialized) {
661 avcodec_set_dimensions(avctx, s->width, s->height);
666 if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P))
667 s->gob_index = ff_h263_get_gob_height(s);
670 s->current_picture.pict_type= s->pict_type;
671 s->current_picture.key_frame= s->pict_type == I_TYPE;
673 /* skip b frames if we dont have reference frames */
674 if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size);
675 /* skip b frames if we are in a hurry */
676 if(avctx->hurry_up && s->pict_type==B_TYPE) return get_consumed_bytes(s, buf_size);
677 /* skip everything if we are in a hurry>=5 */
678 if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
680 if(s->next_p_frame_damaged){
681 if(s->pict_type==B_TYPE)
682 return get_consumed_bytes(s, buf_size);
684 s->next_p_frame_damaged=0;
687 if(MPV_frame_start(s, avctx) < 0)
691 printf("qscale=%d\n", s->qscale);
694 ff_er_frame_start(s);
696 //the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type
697 //which isnt available before MPV_frame_start()
698 if (s->msmpeg4_version==5){
699 if(ff_wmv2_decode_secondary_picture_header(s) < 0)
703 /* decode each macroblock */
708 while(s->mb_y<s->mb_height){
709 if(s->msmpeg4_version){
710 if(s->mb_x!=0 || (s->mb_y%s->slice_height)!=0 || get_bits_count(&s->gb) > s->gb.size_in_bits)
713 if(ff_h263_resync(s)<0)
717 if(s->msmpeg4_version<4 && s->h263_pred)
718 ff_mpeg4_clean_buffers(s);
723 if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type==I_TYPE)
724 if(msmpeg4_decode_ext_header(s, buf_size) < 0){
725 s->error_status_table[s->mb_num-1]= AC_ERROR|DC_ERROR|MV_ERROR;
728 /* divx 5.01+ bistream reorder stuff */
729 if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_packed){
730 int current_pos= get_bits_count(&s->gb)>>3;
731 int startcode_found=0;
733 if(buf_size - current_pos > 5){
735 for(i=current_pos; i<buf_size-3; i++){
736 if(buf[i]==0 && buf[i+1]==0 && buf[i+2]==1 && buf[i+3]==0xB6){
742 if(s->gb.buffer == s->bitstream_buffer && buf_size>20){ //xvid style
748 s->bitstream_buffer= av_fast_realloc(
750 &s->allocated_bitstream_buffer_size,
751 buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE);
752 memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
753 s->bitstream_buffer_size= buf_size - current_pos;
761 assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
762 assert(s->current_picture.pict_type == s->pict_type);
763 if(s->pict_type==B_TYPE || s->low_delay){
764 *pict= *(AVFrame*)&s->current_picture;
765 ff_print_debug_info(s, pict);
767 *pict= *(AVFrame*)&s->last_picture;
769 ff_print_debug_info(s, pict);
772 /* Return the Picture timestamp as the frame number */
773 /* we substract 1 because it is added on utils.c */
774 avctx->frame_number = s->picture_number - 1;
776 /* dont output the last pic after seeking */
777 if(s->last_picture_ptr || s->low_delay)
778 *data_size = sizeof(AVFrame);
779 #ifdef PRINT_FRAME_TIME
780 printf("%Ld\n", rdtsc()-time);
783 return get_consumed_bytes(s, buf_size);
786 AVCodec mpeg4_decoder = {
790 sizeof(MpegEncContext),
794 ff_h263_decode_frame,
795 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
796 .flush= ff_mpeg_flush,
799 AVCodec h263_decoder = {
803 sizeof(MpegEncContext),
807 ff_h263_decode_frame,
808 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
809 .flush= ff_mpeg_flush,
812 AVCodec msmpeg4v1_decoder = {
816 sizeof(MpegEncContext),
820 ff_h263_decode_frame,
821 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
824 AVCodec msmpeg4v2_decoder = {
828 sizeof(MpegEncContext),
832 ff_h263_decode_frame,
833 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
836 AVCodec msmpeg4v3_decoder = {
840 sizeof(MpegEncContext),
844 ff_h263_decode_frame,
845 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
848 AVCodec wmv1_decoder = {
852 sizeof(MpegEncContext),
856 ff_h263_decode_frame,
857 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
860 AVCodec h263i_decoder = {
864 sizeof(MpegEncContext),
868 ff_h263_decode_frame,
869 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
872 AVCodec flv_decoder = {
876 sizeof(MpegEncContext),
880 ff_h263_decode_frame,
881 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1
884 AVCodecParser h263_parser = {
886 sizeof(ParseContext),