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mpegvideo.c
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1 /*
2  * The simplest mpeg encoder (well, it was the simplest!)
3  * Copyright (c) 2000,2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 /**
26  * @file
27  * The simplest mpeg encoder (well, it was the simplest!).
28  */
29 
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
35 #include "libavutil/timer.h"
36 #include "avcodec.h"
37 #include "blockdsp.h"
38 #include "h264chroma.h"
39 #include "idctdsp.h"
40 #include "internal.h"
41 #include "mathops.h"
42 #include "mpeg_er.h"
43 #include "mpegutils.h"
44 #include "mpegvideo.h"
45 #include "mpegvideodata.h"
46 #include "mjpegenc.h"
47 #include "msmpeg4.h"
48 #include "qpeldsp.h"
49 #include "thread.h"
50 #include "wmv2.h"
51 #include <limits.h>
52 
54  int16_t *block, int n, int qscale)
55 {
56  int i, level, nCoeffs;
57  const uint16_t *quant_matrix;
58 
59  nCoeffs= s->block_last_index[n];
60 
61  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
62  /* XXX: only MPEG-1 */
63  quant_matrix = s->intra_matrix;
64  for(i=1;i<=nCoeffs;i++) {
65  int j= s->intra_scantable.permutated[i];
66  level = block[j];
67  if (level) {
68  if (level < 0) {
69  level = -level;
70  level = (int)(level * qscale * quant_matrix[j]) >> 3;
71  level = (level - 1) | 1;
72  level = -level;
73  } else {
74  level = (int)(level * qscale * quant_matrix[j]) >> 3;
75  level = (level - 1) | 1;
76  }
77  block[j] = level;
78  }
79  }
80 }
81 
83  int16_t *block, int n, int qscale)
84 {
85  int i, level, nCoeffs;
86  const uint16_t *quant_matrix;
87 
88  nCoeffs= s->block_last_index[n];
89 
90  quant_matrix = s->inter_matrix;
91  for(i=0; i<=nCoeffs; i++) {
92  int j= s->intra_scantable.permutated[i];
93  level = block[j];
94  if (level) {
95  if (level < 0) {
96  level = -level;
97  level = (((level << 1) + 1) * qscale *
98  ((int) (quant_matrix[j]))) >> 4;
99  level = (level - 1) | 1;
100  level = -level;
101  } else {
102  level = (((level << 1) + 1) * qscale *
103  ((int) (quant_matrix[j]))) >> 4;
104  level = (level - 1) | 1;
105  }
106  block[j] = level;
107  }
108  }
109 }
110 
112  int16_t *block, int n, int qscale)
113 {
114  int i, level, nCoeffs;
115  const uint16_t *quant_matrix;
116 
117  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
118  else qscale <<= 1;
119 
120  if(s->alternate_scan) nCoeffs= 63;
121  else nCoeffs= s->block_last_index[n];
122 
123  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
124  quant_matrix = s->intra_matrix;
125  for(i=1;i<=nCoeffs;i++) {
126  int j= s->intra_scantable.permutated[i];
127  level = block[j];
128  if (level) {
129  if (level < 0) {
130  level = -level;
131  level = (int)(level * qscale * quant_matrix[j]) >> 4;
132  level = -level;
133  } else {
134  level = (int)(level * qscale * quant_matrix[j]) >> 4;
135  }
136  block[j] = level;
137  }
138  }
139 }
140 
142  int16_t *block, int n, int qscale)
143 {
144  int i, level, nCoeffs;
145  const uint16_t *quant_matrix;
146  int sum=-1;
147 
148  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
149  else qscale <<= 1;
150 
151  if(s->alternate_scan) nCoeffs= 63;
152  else nCoeffs= s->block_last_index[n];
153 
154  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
155  sum += block[0];
156  quant_matrix = s->intra_matrix;
157  for(i=1;i<=nCoeffs;i++) {
158  int j= s->intra_scantable.permutated[i];
159  level = block[j];
160  if (level) {
161  if (level < 0) {
162  level = -level;
163  level = (int)(level * qscale * quant_matrix[j]) >> 4;
164  level = -level;
165  } else {
166  level = (int)(level * qscale * quant_matrix[j]) >> 4;
167  }
168  block[j] = level;
169  sum+=level;
170  }
171  }
172  block[63]^=sum&1;
173 }
174 
176  int16_t *block, int n, int qscale)
177 {
178  int i, level, nCoeffs;
179  const uint16_t *quant_matrix;
180  int sum=-1;
181 
182  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
183  else qscale <<= 1;
184 
185  if(s->alternate_scan) nCoeffs= 63;
186  else nCoeffs= s->block_last_index[n];
187 
188  quant_matrix = s->inter_matrix;
189  for(i=0; i<=nCoeffs; i++) {
190  int j= s->intra_scantable.permutated[i];
191  level = block[j];
192  if (level) {
193  if (level < 0) {
194  level = -level;
195  level = (((level << 1) + 1) * qscale *
196  ((int) (quant_matrix[j]))) >> 5;
197  level = -level;
198  } else {
199  level = (((level << 1) + 1) * qscale *
200  ((int) (quant_matrix[j]))) >> 5;
201  }
202  block[j] = level;
203  sum+=level;
204  }
205  }
206  block[63]^=sum&1;
207 }
208 
210  int16_t *block, int n, int qscale)
211 {
212  int i, level, qmul, qadd;
213  int nCoeffs;
214 
215  av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
216 
217  qmul = qscale << 1;
218 
219  if (!s->h263_aic) {
220  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
221  qadd = (qscale - 1) | 1;
222  }else{
223  qadd = 0;
224  }
225  if(s->ac_pred)
226  nCoeffs=63;
227  else
228  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
229 
230  for(i=1; i<=nCoeffs; i++) {
231  level = block[i];
232  if (level) {
233  if (level < 0) {
234  level = level * qmul - qadd;
235  } else {
236  level = level * qmul + qadd;
237  }
238  block[i] = level;
239  }
240  }
241 }
242 
244  int16_t *block, int n, int qscale)
245 {
246  int i, level, qmul, qadd;
247  int nCoeffs;
248 
249  av_assert2(s->block_last_index[n]>=0);
250 
251  qadd = (qscale - 1) | 1;
252  qmul = qscale << 1;
253 
254  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
255 
256  for(i=0; i<=nCoeffs; i++) {
257  level = block[i];
258  if (level) {
259  if (level < 0) {
260  level = level * qmul - qadd;
261  } else {
262  level = level * qmul + qadd;
263  }
264  block[i] = level;
265  }
266  }
267 }
268 
269 
270 static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
271 {
272  while(h--)
273  memset(dst + h*linesize, 128, 16);
274 }
275 
276 static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
277 {
278  while(h--)
279  memset(dst + h*linesize, 128, 8);
280 }
281 
282 /* init common dct for both encoder and decoder */
284 {
285  ff_blockdsp_init(&s->bdsp, s->avctx);
286  ff_h264chroma_init(&s->h264chroma, 8); //for lowres
287  ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
290 
291  if (s->avctx->debug & FF_DEBUG_NOMC) {
292  int i;
293  for (i=0; i<4; i++) {
294  s->hdsp.avg_pixels_tab[0][i] = gray16;
295  s->hdsp.put_pixels_tab[0][i] = gray16;
296  s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
297 
298  s->hdsp.avg_pixels_tab[1][i] = gray8;
299  s->hdsp.put_pixels_tab[1][i] = gray8;
300  s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
301  }
302  }
303 
312 
313  if (HAVE_INTRINSICS_NEON)
315 
316  if (ARCH_ALPHA)
318  if (ARCH_ARM)
320  if (ARCH_PPC)
322  if (ARCH_X86)
324  if (ARCH_MIPS)
326 
327  return 0;
328 }
329 
331 {
332  if (s->codec_id == AV_CODEC_ID_MPEG4)
334  ff_idctdsp_init(&s->idsp, s->avctx);
335 
336  /* load & permutate scantables
337  * note: only wmv uses different ones
338  */
339  if (s->alternate_scan) {
342  } else {
345  }
348 }
349 
350 static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
351 {
352  return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
354  s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
355  &s->linesize, &s->uvlinesize);
356 }
357 
359 {
360  int y_size = s->b8_stride * (2 * s->mb_height + 1);
361  int c_size = s->mb_stride * (s->mb_height + 1);
362  int yc_size = y_size + 2 * c_size;
363  int i;
364 
365  if (s->mb_height & 1)
366  yc_size += 2*s->b8_stride + 2*s->mb_stride;
367 
368  s->sc.edge_emu_buffer =
369  s->me.scratchpad =
370  s->me.temp =
371  s->sc.rd_scratchpad =
372  s->sc.b_scratchpad =
373  s->sc.obmc_scratchpad = NULL;
374 
375  if (s->encoding) {
376  FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
377  ME_MAP_SIZE * sizeof(uint32_t), fail)
379  ME_MAP_SIZE * sizeof(uint32_t), fail)
380  if (s->noise_reduction) {
382  2 * 64 * sizeof(int), fail)
383  }
384  }
385  FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
386  s->block = s->blocks[0];
387 
388  for (i = 0; i < 12; i++) {
389  s->pblocks[i] = &s->block[i];
390  }
391 
392  FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail)
393  s->dpcm_direction = 0;
395 
396  if (s->avctx->codec_tag == AV_RL32("VCR2")) {
397  // exchange uv
398  FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
399  }
400 
401  if (s->out_format == FMT_H263) {
402  /* ac values */
404  yc_size * sizeof(int16_t) * 16, fail);
405  s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
406  s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
407  s->ac_val[2] = s->ac_val[1] + c_size;
408  }
409 
410  return 0;
411 fail:
412  return -1; // free() through ff_mpv_common_end()
413 }
414 
416 {
417  if (!s)
418  return;
419 
421  av_freep(&s->me.scratchpad);
422  s->me.temp =
423  s->sc.rd_scratchpad =
424  s->sc.b_scratchpad =
425  s->sc.obmc_scratchpad = NULL;
426 
427  av_freep(&s->dct_error_sum);
428  av_freep(&s->me.map);
429  av_freep(&s->me.score_map);
430  av_freep(&s->blocks);
431  av_freep(&s->block32);
433  av_freep(&s->ac_val_base);
434  s->block = NULL;
435 }
436 
438 {
439 #define COPY(a) bak->a = src->a
440  COPY(sc.edge_emu_buffer);
441  COPY(me.scratchpad);
442  COPY(me.temp);
443  COPY(sc.rd_scratchpad);
444  COPY(sc.b_scratchpad);
445  COPY(sc.obmc_scratchpad);
446  COPY(me.map);
447  COPY(me.score_map);
448  COPY(blocks);
449  COPY(block);
450  COPY(block32);
451  COPY(dpcm_macroblock);
452  COPY(dpcm_direction);
453  COPY(start_mb_y);
454  COPY(end_mb_y);
455  COPY(me.map_generation);
456  COPY(pb);
457  COPY(dct_error_sum);
458  COPY(dct_count[0]);
459  COPY(dct_count[1]);
460  COPY(ac_val_base);
461  COPY(ac_val[0]);
462  COPY(ac_val[1]);
463  COPY(ac_val[2]);
464 #undef COPY
465 }
466 
468 {
469  MpegEncContext bak;
470  int i, ret;
471  // FIXME copy only needed parts
472  // START_TIMER
473  backup_duplicate_context(&bak, dst);
474  memcpy(dst, src, sizeof(MpegEncContext));
475  backup_duplicate_context(dst, &bak);
476  for (i = 0; i < 12; i++) {
477  dst->pblocks[i] = &dst->block[i];
478  }
479  if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
480  // exchange uv
481  FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
482  }
483  if (!dst->sc.edge_emu_buffer &&
484  (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
485  &dst->sc, dst->linesize)) < 0) {
486  av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
487  "scratch buffers.\n");
488  return ret;
489  }
490  // STOP_TIMER("update_duplicate_context")
491  // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
492  return 0;
493 }
494 
496  const AVCodecContext *src)
497 {
498  int i, ret;
499  MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
500 
501  if (dst == src)
502  return 0;
503 
504  av_assert0(s != s1);
505 
506  // FIXME can parameters change on I-frames?
507  // in that case dst may need a reinit
508  if (!s->context_initialized) {
509  int err;
510  memcpy(s, s1, sizeof(MpegEncContext));
511 
512  s->avctx = dst;
513  s->bitstream_buffer = NULL;
515 
516  if (s1->context_initialized){
517 // s->picture_range_start += MAX_PICTURE_COUNT;
518 // s->picture_range_end += MAX_PICTURE_COUNT;
519  ff_mpv_idct_init(s);
520  if((err = ff_mpv_common_init(s)) < 0){
521  memset(s, 0, sizeof(MpegEncContext));
522  s->avctx = dst;
523  return err;
524  }
525  }
526  }
527 
528  if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
529  s->context_reinit = 0;
530  s->height = s1->height;
531  s->width = s1->width;
532  if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
533  return ret;
534  }
535 
536  s->avctx->coded_height = s1->avctx->coded_height;
537  s->avctx->coded_width = s1->avctx->coded_width;
538  s->avctx->width = s1->avctx->width;
539  s->avctx->height = s1->avctx->height;
540 
541  s->quarter_sample = s1->quarter_sample;
542 
543  s->coded_picture_number = s1->coded_picture_number;
544  s->picture_number = s1->picture_number;
545 
546  av_assert0(!s->picture || s->picture != s1->picture);
547  if(s->picture)
548  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
549  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
550  if (s1->picture && s1->picture[i].f->buf[0] &&
551  (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
552  return ret;
553  }
554 
555 #define UPDATE_PICTURE(pic)\
556 do {\
557  ff_mpeg_unref_picture(s->avctx, &s->pic);\
558  if (s1->pic.f && s1->pic.f->buf[0])\
559  ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
560  else\
561  ret = ff_update_picture_tables(&s->pic, &s1->pic);\
562  if (ret < 0)\
563  return ret;\
564 } while (0)
565 
566  UPDATE_PICTURE(current_picture);
568  UPDATE_PICTURE(next_picture);
569 
570 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
571  ((pic && pic >= old_ctx->picture && \
572  pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
573  &new_ctx->picture[pic - old_ctx->picture] : NULL)
574 
575  s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
576  s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
577  s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
578 
579  // Error/bug resilience
580  s->next_p_frame_damaged = s1->next_p_frame_damaged;
581  s->workaround_bugs = s1->workaround_bugs;
582  s->padding_bug_score = s1->padding_bug_score;
583 
584  // MPEG-4 timing info
585  memcpy(&s->last_time_base, &s1->last_time_base,
586  (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
587  (char *) &s1->last_time_base);
588 
589  // B-frame info
590  s->max_b_frames = s1->max_b_frames;
591  s->low_delay = s1->low_delay;
592  s->droppable = s1->droppable;
593 
594  // DivX handling (doesn't work)
595  s->divx_packed = s1->divx_packed;
596 
597  if (s1->bitstream_buffer) {
598  if (s1->bitstream_buffer_size +
602  s1->allocated_bitstream_buffer_size);
603  if (!s->bitstream_buffer) {
604  s->bitstream_buffer_size = 0;
605  return AVERROR(ENOMEM);
606  }
607  }
608  s->bitstream_buffer_size = s1->bitstream_buffer_size;
609  memcpy(s->bitstream_buffer, s1->bitstream_buffer,
610  s1->bitstream_buffer_size);
611  memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
613  }
614 
615  // linesize-dependent scratch buffer allocation
616  if (!s->sc.edge_emu_buffer)
617  if (s1->linesize) {
618  if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
619  &s->sc, s1->linesize) < 0) {
620  av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
621  "scratch buffers.\n");
622  return AVERROR(ENOMEM);
623  }
624  } else {
625  av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
626  "be allocated due to unknown size.\n");
627  }
628 
629  // MPEG-2/interlacing info
630  memcpy(&s->progressive_sequence, &s1->progressive_sequence,
631  (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
632 
633  if (!s1->first_field) {
634  s->last_pict_type = s1->pict_type;
635  if (s1->current_picture_ptr)
636  s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
637  }
638 
639  return 0;
640 }
641 
642 /**
643  * Set the given MpegEncContext to common defaults
644  * (same for encoding and decoding).
645  * The changed fields will not depend upon the
646  * prior state of the MpegEncContext.
647  */
649 {
650  s->y_dc_scale_table =
653  s->progressive_frame = 1;
654  s->progressive_sequence = 1;
656 
657  s->coded_picture_number = 0;
658  s->picture_number = 0;
659 
660  s->f_code = 1;
661  s->b_code = 1;
662 
663  s->slice_context_count = 1;
664 }
665 
666 /**
667  * Set the given MpegEncContext to defaults for decoding.
668  * the changed fields will not depend upon
669  * the prior state of the MpegEncContext.
670  */
672 {
674 }
675 
677 {
678  s->avctx = avctx;
679  s->width = avctx->coded_width;
680  s->height = avctx->coded_height;
681  s->codec_id = avctx->codec->id;
682  s->workaround_bugs = avctx->workaround_bugs;
683 
684  /* convert fourcc to upper case */
685  s->codec_tag = avpriv_toupper4(avctx->codec_tag);
686 }
687 
688 /**
689  * Initialize and allocates MpegEncContext fields dependent on the resolution.
690  */
692 {
693  int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
694 
695  s->mb_width = (s->width + 15) / 16;
696  s->mb_stride = s->mb_width + 1;
697  s->b8_stride = s->mb_width * 2 + 1;
698  mb_array_size = s->mb_height * s->mb_stride;
699  mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
700 
701  /* set default edge pos, will be overridden
702  * in decode_header if needed */
703  s->h_edge_pos = s->mb_width * 16;
704  s->v_edge_pos = s->mb_height * 16;
705 
706  s->mb_num = s->mb_width * s->mb_height;
707 
708  s->block_wrap[0] =
709  s->block_wrap[1] =
710  s->block_wrap[2] =
711  s->block_wrap[3] = s->b8_stride;
712  s->block_wrap[4] =
713  s->block_wrap[5] = s->mb_stride;
714 
715  y_size = s->b8_stride * (2 * s->mb_height + 1);
716  c_size = s->mb_stride * (s->mb_height + 1);
717  yc_size = y_size + 2 * c_size;
718 
719  if (s->mb_height & 1)
720  yc_size += 2*s->b8_stride + 2*s->mb_stride;
721 
722  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
723  fail); // error resilience code looks cleaner with this
724  for (y = 0; y < s->mb_height; y++)
725  for (x = 0; x < s->mb_width; x++)
726  s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
727 
728  s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
729 
730  if (s->encoding) {
731  /* Allocate MV tables */
732  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
733  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
734  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
735  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
736  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
737  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
738  s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
744 
745  /* Allocate MB type table */
746  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
747 
748  FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
749 
751  mb_array_size * sizeof(float), fail);
753  mb_array_size * sizeof(float), fail);
754 
755  }
756 
757  if (s->codec_id == AV_CODEC_ID_MPEG4 ||
759  /* interlaced direct mode decoding tables */
760  for (i = 0; i < 2; i++) {
761  int j, k;
762  for (j = 0; j < 2; j++) {
763  for (k = 0; k < 2; k++) {
765  s->b_field_mv_table_base[i][j][k],
766  mv_table_size * 2 * sizeof(int16_t),
767  fail);
768  s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
769  s->mb_stride + 1;
770  }
771  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
772  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
773  s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
774  }
775  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
776  }
777  }
778  if (s->out_format == FMT_H263) {
779  /* cbp values */
780  FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
781  s->coded_block = s->coded_block_base + s->b8_stride + 1;
782 
783  /* cbp, ac_pred, pred_dir */
784  FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
785  FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
786  }
787 
788  if (s->h263_pred || s->h263_plus || !s->encoding) {
789  /* dc values */
790  // MN: we need these for error resilience of intra-frames
791  FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
792  s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
793  s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
794  s->dc_val[2] = s->dc_val[1] + c_size;
795  for (i = 0; i < yc_size; i++)
796  s->dc_val_base[i] = 1024;
797  }
798 
799  /* which mb is an intra block */
800  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
801  memset(s->mbintra_table, 1, mb_array_size);
802 
803  /* init macroblock skip table */
804  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
805  // Note the + 1 is for a quicker MPEG-4 slice_end detection
806 
807  return ff_mpeg_er_init(s);
808 fail:
809  return AVERROR(ENOMEM);
810 }
811 
813 {
814  int i, j, k;
815 
816  memset(&s->next_picture, 0, sizeof(s->next_picture));
817  memset(&s->last_picture, 0, sizeof(s->last_picture));
818  memset(&s->current_picture, 0, sizeof(s->current_picture));
819  memset(&s->new_picture, 0, sizeof(s->new_picture));
820 
821  memset(s->thread_context, 0, sizeof(s->thread_context));
822 
823  s->me.map = NULL;
824  s->me.score_map = NULL;
825  s->dct_error_sum = NULL;
826  s->block = NULL;
827  s->blocks = NULL;
828  s->block32 = NULL;
829  memset(s->pblocks, 0, sizeof(s->pblocks));
830  s->dpcm_direction = 0;
831  s->dpcm_macroblock = NULL;
832  s->ac_val_base = NULL;
833  s->ac_val[0] =
834  s->ac_val[1] =
835  s->ac_val[2] =NULL;
836  s->sc.edge_emu_buffer = NULL;
837  s->me.scratchpad = NULL;
838  s->me.temp =
839  s->sc.rd_scratchpad =
840  s->sc.b_scratchpad =
841  s->sc.obmc_scratchpad = NULL;
842 
843 
844  s->bitstream_buffer = NULL;
846  s->picture = NULL;
847  s->mb_type = NULL;
848  s->p_mv_table_base = NULL;
854  s->p_mv_table = NULL;
855  s->b_forw_mv_table = NULL;
856  s->b_back_mv_table = NULL;
859  s->b_direct_mv_table = NULL;
860  for (i = 0; i < 2; i++) {
861  for (j = 0; j < 2; j++) {
862  for (k = 0; k < 2; k++) {
863  s->b_field_mv_table_base[i][j][k] = NULL;
864  s->b_field_mv_table[i][j][k] = NULL;
865  }
866  s->b_field_select_table[i][j] = NULL;
867  s->p_field_mv_table_base[i][j] = NULL;
868  s->p_field_mv_table[i][j] = NULL;
869  }
870  s->p_field_select_table[i] = NULL;
871  }
872 
873  s->dc_val_base = NULL;
874  s->coded_block_base = NULL;
875  s->mbintra_table = NULL;
876  s->cbp_table = NULL;
877  s->pred_dir_table = NULL;
878 
879  s->mbskip_table = NULL;
880 
882  s->er.er_temp_buffer = NULL;
883  s->mb_index2xy = NULL;
884  s->lambda_table = NULL;
885 
886  s->cplx_tab = NULL;
887  s->bits_tab = NULL;
888 }
889 
890 /**
891  * init common structure for both encoder and decoder.
892  * this assumes that some variables like width/height are already set
893  */
895 {
896  int i, ret;
897  int nb_slices = (HAVE_THREADS &&
899  s->avctx->thread_count : 1;
900 
901  clear_context(s);
902 
903  if (s->encoding && s->avctx->slices)
904  nb_slices = s->avctx->slices;
905 
907  s->mb_height = (s->height + 31) / 32 * 2;
908  else
909  s->mb_height = (s->height + 15) / 16;
910 
911  if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
913  "decoding to AV_PIX_FMT_NONE is not supported.\n");
914  return -1;
915  }
916 
917  if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
918  int max_slices;
919  if (s->mb_height)
920  max_slices = FFMIN(MAX_THREADS, s->mb_height);
921  else
922  max_slices = MAX_THREADS;
923  av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
924  " reducing to %d\n", nb_slices, max_slices);
925  nb_slices = max_slices;
926  }
927 
928  if ((s->width || s->height) &&
929  av_image_check_size(s->width, s->height, 0, s->avctx))
930  return -1;
931 
932  dct_init(s);
933 
934  /* set chroma shifts */
936  &s->chroma_x_shift,
937  &s->chroma_y_shift);
938  if (ret)
939  return ret;
940 
942  MAX_PICTURE_COUNT * sizeof(Picture), fail);
943  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
944  s->picture[i].f = av_frame_alloc();
945  if (!s->picture[i].f)
946  goto fail;
947  }
949  if (!s->next_picture.f)
950  goto fail;
952  if (!s->last_picture.f)
953  goto fail;
955  if (!s->current_picture.f)
956  goto fail;
958  if (!s->new_picture.f)
959  goto fail;
960 
961  if (init_context_frame(s))
962  goto fail;
963 
964  s->parse_context.state = -1;
965 
966  s->context_initialized = 1;
967  memset(s->thread_context, 0, sizeof(s->thread_context));
968  s->thread_context[0] = s;
969 
970 // if (s->width && s->height) {
971  if (nb_slices > 1) {
972  for (i = 0; i < nb_slices; i++) {
973  if (i) {
974  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
975  if (!s->thread_context[i])
976  goto fail;
977  }
978  if (init_duplicate_context(s->thread_context[i]) < 0)
979  goto fail;
980  s->thread_context[i]->start_mb_y =
981  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
982  s->thread_context[i]->end_mb_y =
983  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
984  }
985  } else {
986  if (init_duplicate_context(s) < 0)
987  goto fail;
988  s->start_mb_y = 0;
989  s->end_mb_y = s->mb_height;
990  }
991  s->slice_context_count = nb_slices;
992 // }
993 
994  return 0;
995  fail:
997  return -1;
998 }
999 
1000 /**
1001  * Frees and resets MpegEncContext fields depending on the resolution.
1002  * Is used during resolution changes to avoid a full reinitialization of the
1003  * codec.
1004  */
1006 {
1007  int i, j, k;
1008 
1009  av_freep(&s->mb_type);
1016  s->p_mv_table = NULL;
1017  s->b_forw_mv_table = NULL;
1018  s->b_back_mv_table = NULL;
1021  s->b_direct_mv_table = NULL;
1022  for (i = 0; i < 2; i++) {
1023  for (j = 0; j < 2; j++) {
1024  for (k = 0; k < 2; k++) {
1025  av_freep(&s->b_field_mv_table_base[i][j][k]);
1026  s->b_field_mv_table[i][j][k] = NULL;
1027  }
1028  av_freep(&s->b_field_select_table[i][j]);
1029  av_freep(&s->p_field_mv_table_base[i][j]);
1030  s->p_field_mv_table[i][j] = NULL;
1031  }
1033  }
1034 
1035  av_freep(&s->dc_val_base);
1037  av_freep(&s->mbintra_table);
1038  av_freep(&s->cbp_table);
1039  av_freep(&s->pred_dir_table);
1040 
1041  av_freep(&s->mbskip_table);
1042 
1044  av_freep(&s->er.er_temp_buffer);
1045  av_freep(&s->mb_index2xy);
1046  av_freep(&s->lambda_table);
1047 
1048  av_freep(&s->cplx_tab);
1049  av_freep(&s->bits_tab);
1050 
1051  s->linesize = s->uvlinesize = 0;
1052 }
1053 
1055 {
1056  int i, err = 0;
1057 
1058  if (!s->context_initialized)
1059  return AVERROR(EINVAL);
1060 
1061  if (s->slice_context_count > 1) {
1062  for (i = 0; i < s->slice_context_count; i++) {
1064  }
1065  for (i = 1; i < s->slice_context_count; i++) {
1066  av_freep(&s->thread_context[i]);
1067  }
1068  } else
1070 
1071  free_context_frame(s);
1072 
1073  if (s->picture)
1074  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1075  s->picture[i].needs_realloc = 1;
1076  }
1077 
1078  s->last_picture_ptr =
1079  s->next_picture_ptr =
1081 
1082  // init
1084  s->mb_height = (s->height + 31) / 32 * 2;
1085  else
1086  s->mb_height = (s->height + 15) / 16;
1087 
1088  if ((s->width || s->height) &&
1089  (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1090  goto fail;
1091 
1092  if ((err = init_context_frame(s)))
1093  goto fail;
1094 
1095  memset(s->thread_context, 0, sizeof(s->thread_context));
1096  s->thread_context[0] = s;
1097 
1098  if (s->width && s->height) {
1099  int nb_slices = s->slice_context_count;
1100  if (nb_slices > 1) {
1101  for (i = 0; i < nb_slices; i++) {
1102  if (i) {
1103  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1104  if (!s->thread_context[i]) {
1105  err = AVERROR(ENOMEM);
1106  goto fail;
1107  }
1108  }
1109  if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1110  goto fail;
1111  s->thread_context[i]->start_mb_y =
1112  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1113  s->thread_context[i]->end_mb_y =
1114  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1115  }
1116  } else {
1117  err = init_duplicate_context(s);
1118  if (err < 0)
1119  goto fail;
1120  s->start_mb_y = 0;
1121  s->end_mb_y = s->mb_height;
1122  }
1123  s->slice_context_count = nb_slices;
1124  }
1125 
1126  return 0;
1127  fail:
1128  ff_mpv_common_end(s);
1129  return err;
1130 }
1131 
1132 /* init common structure for both encoder and decoder */
1134 {
1135  int i;
1136 
1137  if (!s)
1138  return ;
1139 
1140  if (s->slice_context_count > 1) {
1141  for (i = 0; i < s->slice_context_count; i++) {
1143  }
1144  for (i = 1; i < s->slice_context_count; i++) {
1145  av_freep(&s->thread_context[i]);
1146  }
1147  s->slice_context_count = 1;
1148  } else free_duplicate_context(s);
1149 
1151  s->parse_context.buffer_size = 0;
1152 
1155 
1156  if (s->picture) {
1157  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1159  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1160  av_frame_free(&s->picture[i].f);
1161  }
1162  }
1163  av_freep(&s->picture);
1176 
1177  free_context_frame(s);
1178 
1179  s->context_initialized = 0;
1180  s->last_picture_ptr =
1181  s->next_picture_ptr =
1183  s->linesize = s->uvlinesize = 0;
1184 }
1185 
1186 
1187 static void gray_frame(AVFrame *frame)
1188 {
1189  int i, h_chroma_shift, v_chroma_shift;
1190 
1191  av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1192 
1193  for(i=0; i<frame->height; i++)
1194  memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1195  for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1196  memset(frame->data[1] + frame->linesize[1]*i,
1197  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1198  memset(frame->data[2] + frame->linesize[2]*i,
1199  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1200  }
1201 }
1202 
1203 /**
1204  * generic function called after decoding
1205  * the header and before a frame is decoded.
1206  */
1208 {
1209  int i, ret;
1210  Picture *pic;
1211  s->mb_skipped = 0;
1212 
1213  if (!ff_thread_can_start_frame(avctx)) {
1214  av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1215  return -1;
1216  }
1217 
1218  /* mark & release old frames */
1219  if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1221  s->last_picture_ptr->f->buf[0]) {
1223  }
1224 
1225  /* release forgotten pictures */
1226  /* if (MPEG-124 / H.263) */
1227  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1228  if (&s->picture[i] != s->last_picture_ptr &&
1229  &s->picture[i] != s->next_picture_ptr &&
1230  s->picture[i].reference && !s->picture[i].needs_realloc) {
1231  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1232  }
1233  }
1234 
1238 
1239  /* release non reference frames */
1240  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1241  if (!s->picture[i].reference)
1242  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1243  }
1244 
1245  if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1246  // we already have an unused image
1247  // (maybe it was set before reading the header)
1248  pic = s->current_picture_ptr;
1249  } else {
1250  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1251  if (i < 0) {
1252  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1253  return i;
1254  }
1255  pic = &s->picture[i];
1256  }
1257 
1258  pic->reference = 0;
1259  if (!s->droppable) {
1260  if (s->pict_type != AV_PICTURE_TYPE_B)
1261  pic->reference = 3;
1262  }
1263 
1265 
1266  if (alloc_picture(s, pic, 0) < 0)
1267  return -1;
1268 
1269  s->current_picture_ptr = pic;
1270  // FIXME use only the vars from current_pic
1272  if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1274  if (s->picture_structure != PICT_FRAME)
1277  }
1281 
1283  // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1284  // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1286 
1287  if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1288  s->current_picture_ptr)) < 0)
1289  return ret;
1290 
1291  if (s->pict_type != AV_PICTURE_TYPE_B) {
1293  if (!s->droppable)
1295  }
1296  ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1298  s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1299  s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1301  s->pict_type, s->droppable);
1302 
1303  if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1304  (s->pict_type != AV_PICTURE_TYPE_I)) {
1305  int h_chroma_shift, v_chroma_shift;
1307  &h_chroma_shift, &v_chroma_shift);
1309  av_log(avctx, AV_LOG_DEBUG,
1310  "allocating dummy last picture for B frame\n");
1311  else if (s->pict_type != AV_PICTURE_TYPE_I)
1312  av_log(avctx, AV_LOG_ERROR,
1313  "warning: first frame is no keyframe\n");
1314 
1315  /* Allocate a dummy frame */
1316  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1317  if (i < 0) {
1318  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1319  return i;
1320  }
1321  s->last_picture_ptr = &s->picture[i];
1322 
1323  s->last_picture_ptr->reference = 3;
1324  s->last_picture_ptr->f->key_frame = 0;
1326 
1327  if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1328  s->last_picture_ptr = NULL;
1329  return -1;
1330  }
1331 
1332  if (!avctx->hwaccel) {
1333  for(i=0; i<avctx->height; i++)
1334  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1335  0x80, avctx->width);
1336  if (s->last_picture_ptr->f->data[2]) {
1337  for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1338  memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1339  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1340  memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1341  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1342  }
1343  }
1344 
1346  for(i=0; i<avctx->height; i++)
1347  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1348  }
1349  }
1350 
1351  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1352  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1353  }
1354  if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1355  s->pict_type == AV_PICTURE_TYPE_B) {
1356  /* Allocate a dummy frame */
1357  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1358  if (i < 0) {
1359  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1360  return i;
1361  }
1362  s->next_picture_ptr = &s->picture[i];
1363 
1364  s->next_picture_ptr->reference = 3;
1365  s->next_picture_ptr->f->key_frame = 0;
1367 
1368  if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1369  s->next_picture_ptr = NULL;
1370  return -1;
1371  }
1372  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1373  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1374  }
1375 
1376 #if 0 // BUFREF-FIXME
1377  memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1378  memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1379 #endif
1380  if (s->last_picture_ptr) {
1381  if (s->last_picture_ptr->f->buf[0] &&
1382  (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1383  s->last_picture_ptr)) < 0)
1384  return ret;
1385  }
1386  if (s->next_picture_ptr) {
1387  if (s->next_picture_ptr->f->buf[0] &&
1388  (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1389  s->next_picture_ptr)) < 0)
1390  return ret;
1391  }
1392 
1394  s->last_picture_ptr->f->buf[0]));
1395 
1396  if (s->picture_structure!= PICT_FRAME) {
1397  int i;
1398  for (i = 0; i < 4; i++) {
1400  s->current_picture.f->data[i] +=
1401  s->current_picture.f->linesize[i];
1402  }
1403  s->current_picture.f->linesize[i] *= 2;
1404  s->last_picture.f->linesize[i] *= 2;
1405  s->next_picture.f->linesize[i] *= 2;
1406  }
1407  }
1408 
1409  /* set dequantizer, we can't do it during init as
1410  * it might change for MPEG-4 and we can't do it in the header
1411  * decode as init is not called for MPEG-4 there yet */
1412  if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1415  } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1418  } else {
1421  }
1422 
1423  if (s->avctx->debug & FF_DEBUG_NOMC) {
1425  }
1426 
1427  return 0;
1428 }
1429 
1430 /* called after a frame has been decoded. */
1432 {
1433  emms_c();
1434 
1435  if (s->current_picture.reference)
1437 }
1438 
1440 {
1442  p->qscale_table, p->motion_val, &s->low_delay,
1443  s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1444 }
1445 
1447 {
1449  int offset = 2*s->mb_stride + 1;
1450  if(!ref)
1451  return AVERROR(ENOMEM);
1452  av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1453  ref->size -= offset;
1454  ref->data += offset;
1455  return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1456 }
1457 
1459  uint8_t *dest, uint8_t *src,
1460  int field_based, int field_select,
1461  int src_x, int src_y,
1462  int width, int height, ptrdiff_t stride,
1463  int h_edge_pos, int v_edge_pos,
1464  int w, int h, h264_chroma_mc_func *pix_op,
1465  int motion_x, int motion_y)
1466 {
1467  const int lowres = s->avctx->lowres;
1468  const int op_index = FFMIN(lowres, 3);
1469  const int s_mask = (2 << lowres) - 1;
1470  int emu = 0;
1471  int sx, sy;
1472 
1473  if (s->quarter_sample) {
1474  motion_x /= 2;
1475  motion_y /= 2;
1476  }
1477 
1478  sx = motion_x & s_mask;
1479  sy = motion_y & s_mask;
1480  src_x += motion_x >> lowres + 1;
1481  src_y += motion_y >> lowres + 1;
1482 
1483  src += src_y * stride + src_x;
1484 
1485  if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1486  (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1488  s->linesize, s->linesize,
1489  w + 1, (h + 1) << field_based,
1490  src_x, src_y << field_based,
1491  h_edge_pos, v_edge_pos);
1492  src = s->sc.edge_emu_buffer;
1493  emu = 1;
1494  }
1495 
1496  sx = (sx << 2) >> lowres;
1497  sy = (sy << 2) >> lowres;
1498  if (field_select)
1499  src += s->linesize;
1500  pix_op[op_index](dest, src, stride, h, sx, sy);
1501  return emu;
1502 }
1503 
1504 /* apply one mpeg motion vector to the three components */
1506  uint8_t *dest_y,
1507  uint8_t *dest_cb,
1508  uint8_t *dest_cr,
1509  int field_based,
1510  int bottom_field,
1511  int field_select,
1512  uint8_t **ref_picture,
1513  h264_chroma_mc_func *pix_op,
1514  int motion_x, int motion_y,
1515  int h, int mb_y)
1516 {
1517  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1518  int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1519  ptrdiff_t uvlinesize, linesize;
1520  const int lowres = s->avctx->lowres;
1521  const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1522  const int block_s = 8>>lowres;
1523  const int s_mask = (2 << lowres) - 1;
1524  const int h_edge_pos = s->h_edge_pos >> lowres;
1525  const int v_edge_pos = s->v_edge_pos >> lowres;
1526  linesize = s->current_picture.f->linesize[0] << field_based;
1527  uvlinesize = s->current_picture.f->linesize[1] << field_based;
1528 
1529  // FIXME obviously not perfect but qpel will not work in lowres anyway
1530  if (s->quarter_sample) {
1531  motion_x /= 2;
1532  motion_y /= 2;
1533  }
1534 
1535  if(field_based){
1536  motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1537  }
1538 
1539  sx = motion_x & s_mask;
1540  sy = motion_y & s_mask;
1541  src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1542  src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1543 
1544  if (s->out_format == FMT_H263) {
1545  uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1546  uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1547  uvsrc_x = src_x >> 1;
1548  uvsrc_y = src_y >> 1;
1549  } else if (s->out_format == FMT_H261) {
1550  // even chroma mv's are full pel in H261
1551  mx = motion_x / 4;
1552  my = motion_y / 4;
1553  uvsx = (2 * mx) & s_mask;
1554  uvsy = (2 * my) & s_mask;
1555  uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1556  uvsrc_y = mb_y * block_s + (my >> lowres);
1557  } else {
1558  if(s->chroma_y_shift){
1559  mx = motion_x / 2;
1560  my = motion_y / 2;
1561  uvsx = mx & s_mask;
1562  uvsy = my & s_mask;
1563  uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1564  uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1565  } else {
1566  if(s->chroma_x_shift){
1567  //Chroma422
1568  mx = motion_x / 2;
1569  uvsx = mx & s_mask;
1570  uvsy = motion_y & s_mask;
1571  uvsrc_y = src_y;
1572  uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1573  } else {
1574  //Chroma444
1575  uvsx = motion_x & s_mask;
1576  uvsy = motion_y & s_mask;
1577  uvsrc_x = src_x;
1578  uvsrc_y = src_y;
1579  }
1580  }
1581  }
1582 
1583  ptr_y = ref_picture[0] + src_y * linesize + src_x;
1584  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1585  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1586 
1587  if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1588  (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1589  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1590  linesize >> field_based, linesize >> field_based,
1591  17, 17 + field_based,
1592  src_x, src_y << field_based, h_edge_pos,
1593  v_edge_pos);
1594  ptr_y = s->sc.edge_emu_buffer;
1595  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1596  uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1597  uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1598  if (s->workaround_bugs & FF_BUG_IEDGE)
1599  vbuf -= s->uvlinesize;
1600  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1601  uvlinesize >> field_based, uvlinesize >> field_based,
1602  9, 9 + field_based,
1603  uvsrc_x, uvsrc_y << field_based,
1604  h_edge_pos >> 1, v_edge_pos >> 1);
1605  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1606  uvlinesize >> field_based,uvlinesize >> field_based,
1607  9, 9 + field_based,
1608  uvsrc_x, uvsrc_y << field_based,
1609  h_edge_pos >> 1, v_edge_pos >> 1);
1610  ptr_cb = ubuf;
1611  ptr_cr = vbuf;
1612  }
1613  }
1614 
1615  // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1616  if (bottom_field) {
1617  dest_y += s->linesize;
1618  dest_cb += s->uvlinesize;
1619  dest_cr += s->uvlinesize;
1620  }
1621 
1622  if (field_select) {
1623  ptr_y += s->linesize;
1624  ptr_cb += s->uvlinesize;
1625  ptr_cr += s->uvlinesize;
1626  }
1627 
1628  sx = (sx << 2) >> lowres;
1629  sy = (sy << 2) >> lowres;
1630  pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1631 
1632  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1633  int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1634  uvsx = (uvsx << 2) >> lowres;
1635  uvsy = (uvsy << 2) >> lowres;
1636  if (hc) {
1637  pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1638  pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1639  }
1640  }
1641  // FIXME h261 lowres loop filter
1642 }
1643 
1645  uint8_t *dest_cb, uint8_t *dest_cr,
1646  uint8_t **ref_picture,
1647  h264_chroma_mc_func * pix_op,
1648  int mx, int my)
1649 {
1650  const int lowres = s->avctx->lowres;
1651  const int op_index = FFMIN(lowres, 3);
1652  const int block_s = 8 >> lowres;
1653  const int s_mask = (2 << lowres) - 1;
1654  const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1655  const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1656  int emu = 0, src_x, src_y, sx, sy;
1657  ptrdiff_t offset;
1658  uint8_t *ptr;
1659 
1660  if (s->quarter_sample) {
1661  mx /= 2;
1662  my /= 2;
1663  }
1664 
1665  /* In case of 8X8, we construct a single chroma motion vector
1666  with a special rounding */
1667  mx = ff_h263_round_chroma(mx);
1668  my = ff_h263_round_chroma(my);
1669 
1670  sx = mx & s_mask;
1671  sy = my & s_mask;
1672  src_x = s->mb_x * block_s + (mx >> lowres + 1);
1673  src_y = s->mb_y * block_s + (my >> lowres + 1);
1674 
1675  offset = src_y * s->uvlinesize + src_x;
1676  ptr = ref_picture[1] + offset;
1677  if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1678  (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1680  s->uvlinesize, s->uvlinesize,
1681  9, 9,
1682  src_x, src_y, h_edge_pos, v_edge_pos);
1683  ptr = s->sc.edge_emu_buffer;
1684  emu = 1;
1685  }
1686  sx = (sx << 2) >> lowres;
1687  sy = (sy << 2) >> lowres;
1688  pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1689 
1690  ptr = ref_picture[2] + offset;
1691  if (emu) {
1693  s->uvlinesize, s->uvlinesize,
1694  9, 9,
1695  src_x, src_y, h_edge_pos, v_edge_pos);
1696  ptr = s->sc.edge_emu_buffer;
1697  }
1698  pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1699 }
1700 
1701 /**
1702  * motion compensation of a single macroblock
1703  * @param s context
1704  * @param dest_y luma destination pointer
1705  * @param dest_cb chroma cb/u destination pointer
1706  * @param dest_cr chroma cr/v destination pointer
1707  * @param dir direction (0->forward, 1->backward)
1708  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1709  * @param pix_op halfpel motion compensation function (average or put normally)
1710  * the motion vectors are taken from s->mv and the MV type from s->mv_type
1711  */
1712 static inline void MPV_motion_lowres(MpegEncContext *s,
1713  uint8_t *dest_y, uint8_t *dest_cb,
1714  uint8_t *dest_cr,
1715  int dir, uint8_t **ref_picture,
1716  h264_chroma_mc_func *pix_op)
1717 {
1718  int mx, my;
1719  int mb_x, mb_y, i;
1720  const int lowres = s->avctx->lowres;
1721  const int block_s = 8 >>lowres;
1722 
1723  mb_x = s->mb_x;
1724  mb_y = s->mb_y;
1725 
1726  switch (s->mv_type) {
1727  case MV_TYPE_16X16:
1728  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1729  0, 0, 0,
1730  ref_picture, pix_op,
1731  s->mv[dir][0][0], s->mv[dir][0][1],
1732  2 * block_s, mb_y);
1733  break;
1734  case MV_TYPE_8X8:
1735  mx = 0;
1736  my = 0;
1737  for (i = 0; i < 4; i++) {
1738  hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1739  s->linesize) * block_s,
1740  ref_picture[0], 0, 0,
1741  (2 * mb_x + (i & 1)) * block_s,
1742  (2 * mb_y + (i >> 1)) * block_s,
1743  s->width, s->height, s->linesize,
1744  s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1745  block_s, block_s, pix_op,
1746  s->mv[dir][i][0], s->mv[dir][i][1]);
1747 
1748  mx += s->mv[dir][i][0];
1749  my += s->mv[dir][i][1];
1750  }
1751 
1752  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1753  chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1754  pix_op, mx, my);
1755  break;
1756  case MV_TYPE_FIELD:
1757  if (s->picture_structure == PICT_FRAME) {
1758  /* top field */
1759  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1760  1, 0, s->field_select[dir][0],
1761  ref_picture, pix_op,
1762  s->mv[dir][0][0], s->mv[dir][0][1],
1763  block_s, mb_y);
1764  /* bottom field */
1765  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1766  1, 1, s->field_select[dir][1],
1767  ref_picture, pix_op,
1768  s->mv[dir][1][0], s->mv[dir][1][1],
1769  block_s, mb_y);
1770  } else {
1771  if (s->picture_structure != s->field_select[dir][0] + 1 &&
1772  s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1773  ref_picture = s->current_picture_ptr->f->data;
1774 
1775  }
1776  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1777  0, 0, s->field_select[dir][0],
1778  ref_picture, pix_op,
1779  s->mv[dir][0][0],
1780  s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1781  }
1782  break;
1783  case MV_TYPE_16X8:
1784  for (i = 0; i < 2; i++) {
1785  uint8_t **ref2picture;
1786 
1787  if (s->picture_structure == s->field_select[dir][i] + 1 ||
1788  s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1789  ref2picture = ref_picture;
1790  } else {
1791  ref2picture = s->current_picture_ptr->f->data;
1792  }
1793 
1794  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1795  0, 0, s->field_select[dir][i],
1796  ref2picture, pix_op,
1797  s->mv[dir][i][0], s->mv[dir][i][1] +
1798  2 * block_s * i, block_s, mb_y >> 1);
1799 
1800  dest_y += 2 * block_s * s->linesize;
1801  dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1802  dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1803  }
1804  break;
1805  case MV_TYPE_DMV:
1806  if (s->picture_structure == PICT_FRAME) {
1807  for (i = 0; i < 2; i++) {
1808  int j;
1809  for (j = 0; j < 2; j++) {
1810  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1811  1, j, j ^ i,
1812  ref_picture, pix_op,
1813  s->mv[dir][2 * i + j][0],
1814  s->mv[dir][2 * i + j][1],
1815  block_s, mb_y);
1816  }
1818  }
1819  } else {
1820  for (i = 0; i < 2; i++) {
1821  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1822  0, 0, s->picture_structure != i + 1,
1823  ref_picture, pix_op,
1824  s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1825  2 * block_s, mb_y >> 1);
1826 
1827  // after put we make avg of the same block
1829 
1830  // opposite parity is always in the same
1831  // frame if this is second field
1832  if (!s->first_field) {
1833  ref_picture = s->current_picture_ptr->f->data;
1834  }
1835  }
1836  }
1837  break;
1838  default:
1839  av_assert2(0);
1840  }
1841 }
1842 
1843 /**
1844  * find the lowest MB row referenced in the MVs
1845  */
1847 {
1848  int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1849  int my, off, i, mvs;
1850 
1851  if (s->picture_structure != PICT_FRAME || s->mcsel)
1852  goto unhandled;
1853 
1854  switch (s->mv_type) {
1855  case MV_TYPE_16X16:
1856  mvs = 1;
1857  break;
1858  case MV_TYPE_16X8:
1859  mvs = 2;
1860  break;
1861  case MV_TYPE_8X8:
1862  mvs = 4;
1863  break;
1864  default:
1865  goto unhandled;
1866  }
1867 
1868  for (i = 0; i < mvs; i++) {
1869  my = s->mv[dir][i][1];
1870  my_max = FFMAX(my_max, my);
1871  my_min = FFMIN(my_min, my);
1872  }
1873 
1874  off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1875 
1876  return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1877 unhandled:
1878  return s->mb_height-1;
1879 }
1880 
1881 /* put block[] to dest[] */
1882 static inline void put_dct(MpegEncContext *s,
1883  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1884 {
1885  s->dct_unquantize_intra(s, block, i, qscale);
1886  s->idsp.idct_put(dest, line_size, block);
1887 }
1888 
1889 /* add block[] to dest[] */
1890 static inline void add_dct(MpegEncContext *s,
1891  int16_t *block, int i, uint8_t *dest, int line_size)
1892 {
1893  if (s->block_last_index[i] >= 0) {
1894  s->idsp.idct_add(dest, line_size, block);
1895  }
1896 }
1897 
1898 static inline void add_dequant_dct(MpegEncContext *s,
1899  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1900 {
1901  if (s->block_last_index[i] >= 0) {
1902  s->dct_unquantize_inter(s, block, i, qscale);
1903 
1904  s->idsp.idct_add(dest, line_size, block);
1905  }
1906 }
1907 
1908 /**
1909  * Clean dc, ac, coded_block for the current non-intra MB.
1910  */
1912 {
1913  int wrap = s->b8_stride;
1914  int xy = s->block_index[0];
1915 
1916  s->dc_val[0][xy ] =
1917  s->dc_val[0][xy + 1 ] =
1918  s->dc_val[0][xy + wrap] =
1919  s->dc_val[0][xy + 1 + wrap] = 1024;
1920  /* ac pred */
1921  memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1922  memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1923  if (s->msmpeg4_version>=3) {
1924  s->coded_block[xy ] =
1925  s->coded_block[xy + 1 ] =
1926  s->coded_block[xy + wrap] =
1927  s->coded_block[xy + 1 + wrap] = 0;
1928  }
1929  /* chroma */
1930  wrap = s->mb_stride;
1931  xy = s->mb_x + s->mb_y * wrap;
1932  s->dc_val[1][xy] =
1933  s->dc_val[2][xy] = 1024;
1934  /* ac pred */
1935  memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1936  memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1937 
1938  s->mbintra_table[xy]= 0;
1939 }
1940 
1941 /* generic function called after a macroblock has been parsed by the
1942  decoder or after it has been encoded by the encoder.
1943 
1944  Important variables used:
1945  s->mb_intra : true if intra macroblock
1946  s->mv_dir : motion vector direction
1947  s->mv_type : motion vector type
1948  s->mv : motion vector
1949  s->interlaced_dct : true if interlaced dct used (mpeg2)
1950  */
1951 static av_always_inline
1953  int lowres_flag, int is_mpeg12)
1954 {
1955  const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1956 
1957  if (CONFIG_XVMC &&
1958  s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1959  s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1960  return;
1961  }
1962 
1963  if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1964  /* print DCT coefficients */
1965  int i,j;
1966  av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1967  for(i=0; i<6; i++){
1968  for(j=0; j<64; j++){
1969  av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1970  block[i][s->idsp.idct_permutation[j]]);
1971  }
1972  av_log(s->avctx, AV_LOG_DEBUG, "\n");
1973  }
1974  }
1975 
1976  s->current_picture.qscale_table[mb_xy] = s->qscale;
1977 
1978  /* update DC predictors for P macroblocks */
1979  if (!s->mb_intra) {
1980  if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1981  if(s->mbintra_table[mb_xy])
1983  } else {
1984  s->last_dc[0] =
1985  s->last_dc[1] =
1986  s->last_dc[2] = 128 << s->intra_dc_precision;
1987  }
1988  }
1989  else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1990  s->mbintra_table[mb_xy]=1;
1991 
1993  !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1994  s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1995  uint8_t *dest_y, *dest_cb, *dest_cr;
1996  int dct_linesize, dct_offset;
1997  op_pixels_func (*op_pix)[4];
1998  qpel_mc_func (*op_qpix)[16];
1999  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2000  const int uvlinesize = s->current_picture.f->linesize[1];
2001  const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
2002  const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
2003 
2004  /* avoid copy if macroblock skipped in last frame too */
2005  /* skip only during decoding as we might trash the buffers during encoding a bit */
2006  if(!s->encoding){
2007  uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2008 
2009  if (s->mb_skipped) {
2010  s->mb_skipped= 0;
2012  *mbskip_ptr = 1;
2013  } else if(!s->current_picture.reference) {
2014  *mbskip_ptr = 1;
2015  } else{
2016  *mbskip_ptr = 0; /* not skipped */
2017  }
2018  }
2019 
2020  dct_linesize = linesize << s->interlaced_dct;
2021  dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2022 
2023  if(readable){
2024  dest_y= s->dest[0];
2025  dest_cb= s->dest[1];
2026  dest_cr= s->dest[2];
2027  }else{
2028  dest_y = s->sc.b_scratchpad;
2029  dest_cb= s->sc.b_scratchpad+16*linesize;
2030  dest_cr= s->sc.b_scratchpad+32*linesize;
2031  }
2032 
2033  if (!s->mb_intra) {
2034  /* motion handling */
2035  /* decoding or more than one mb_type (MC was already done otherwise) */
2036  if(!s->encoding){
2037 
2038  if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2039  if (s->mv_dir & MV_DIR_FORWARD) {
2041  lowest_referenced_row(s, 0),
2042  0);
2043  }
2044  if (s->mv_dir & MV_DIR_BACKWARD) {
2046  lowest_referenced_row(s, 1),
2047  0);
2048  }
2049  }
2050 
2051  if(lowres_flag){
2053 
2054  if (s->mv_dir & MV_DIR_FORWARD) {
2055  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2057  }
2058  if (s->mv_dir & MV_DIR_BACKWARD) {
2059  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2060  }
2061  }else{
2062  op_qpix = s->me.qpel_put;
2063  if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2064  op_pix = s->hdsp.put_pixels_tab;
2065  }else{
2066  op_pix = s->hdsp.put_no_rnd_pixels_tab;
2067  }
2068  if (s->mv_dir & MV_DIR_FORWARD) {
2069  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2070  op_pix = s->hdsp.avg_pixels_tab;
2071  op_qpix= s->me.qpel_avg;
2072  }
2073  if (s->mv_dir & MV_DIR_BACKWARD) {
2074  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2075  }
2076  }
2077  }
2078 
2079  /* skip dequant / idct if we are really late ;) */
2080  if(s->avctx->skip_idct){
2083  || s->avctx->skip_idct >= AVDISCARD_ALL)
2084  goto skip_idct;
2085  }
2086 
2087  /* add dct residue */
2089  || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2090  add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2091  add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2092  add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2093  add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2094 
2095  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2096  if (s->chroma_y_shift){
2097  add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2098  add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2099  }else{
2100  dct_linesize >>= 1;
2101  dct_offset >>=1;
2102  add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2103  add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2104  add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2105  add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2106  }
2107  }
2108  } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2109  add_dct(s, block[0], 0, dest_y , dct_linesize);
2110  add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2111  add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2112  add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2113 
2114  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2115  if(s->chroma_y_shift){//Chroma420
2116  add_dct(s, block[4], 4, dest_cb, uvlinesize);
2117  add_dct(s, block[5], 5, dest_cr, uvlinesize);
2118  }else{
2119  //chroma422
2120  dct_linesize = uvlinesize << s->interlaced_dct;
2121  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2122 
2123  add_dct(s, block[4], 4, dest_cb, dct_linesize);
2124  add_dct(s, block[5], 5, dest_cr, dct_linesize);
2125  add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2126  add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2127  if(!s->chroma_x_shift){//Chroma444
2128  add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2129  add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2130  add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2131  add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2132  }
2133  }
2134  }//fi gray
2135  }
2136  else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2137  ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2138  }
2139  } else {
2140  /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
2141  TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
2142  if (s->avctx->bits_per_raw_sample > 8){
2143  const int act_block_size = block_size * 2;
2144 
2145  if(s->dpcm_direction == 0) {
2146  s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]);
2147  s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
2148  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]);
2149  s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
2150 
2151  dct_linesize = uvlinesize << s->interlaced_dct;
2152  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2153 
2154  s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]);
2155  s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]);
2156  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
2157  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
2158  if(!s->chroma_x_shift){//Chroma444
2159  s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]);
2160  s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]);
2161  s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
2162  s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
2163  }
2164  } else if(s->dpcm_direction == 1) {
2165  int i, w, h;
2166  uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2167  int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2168  for(i = 0; i < 3; i++) {
2169  int idx = 0;
2170  int vsub = i ? s->chroma_y_shift : 0;
2171  int hsub = i ? s->chroma_x_shift : 0;
2172  for(h = 0; h < (16 >> vsub); h++){
2173  for(w = 0; w < (16 >> hsub); w++)
2174  dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2175  dest_pcm[i] += linesize[i] / 2;
2176  }
2177  }
2178  } else if(s->dpcm_direction == -1) {
2179  int i, w, h;
2180  uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2181  int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2182  for(i = 0; i < 3; i++) {
2183  int idx = 0;
2184  int vsub = i ? s->chroma_y_shift : 0;
2185  int hsub = i ? s->chroma_x_shift : 0;
2186  dest_pcm[i] += (linesize[i] / 2) * ((16 >> vsub) - 1);
2187  for(h = (16 >> vsub)-1; h >= 1; h--){
2188  for(w = (16 >> hsub)-1; w >= 1; w--)
2189  dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2190  dest_pcm[i] -= linesize[i] / 2;
2191  }
2192  }
2193  }
2194  }
2195  /* dct only in intra block */
2197  put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2198  put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2199  put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2200  put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2201 
2202  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2203  if(s->chroma_y_shift){
2204  put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2205  put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2206  }else{
2207  dct_offset >>=1;
2208  dct_linesize >>=1;
2209  put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2210  put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2211  put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2212  put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2213  }
2214  }
2215  }else{
2216  s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2217  s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2218  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2219  s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2220 
2221  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2222  if(s->chroma_y_shift){
2223  s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2224  s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2225  }else{
2226 
2227  dct_linesize = uvlinesize << s->interlaced_dct;
2228  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2229 
2230  s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2231  s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2232  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2233  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2234  if(!s->chroma_x_shift){//Chroma444
2235  s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2236  s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2237  s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2238  s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2239  }
2240  }
2241  }//gray
2242  }
2243  }
2244 skip_idct:
2245  if(!readable){
2246  s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2247  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2248  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2249  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2250  }
2251  }
2252  }
2253 }
2254 
2255 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
2256 {
2257 #if !CONFIG_SMALL
2258  if(s->out_format == FMT_MPEG1) {
2259  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2260  else mpv_reconstruct_mb_internal(s, block, 0, 1);
2261  } else
2262 #endif
2263  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2264  else mpv_reconstruct_mb_internal(s, block, 0, 0);
2265 }
2266 
2268 {
2271  s->first_field, s->low_delay);
2272 }
2273 
2274 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2275  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2276  const int uvlinesize = s->current_picture.f->linesize[1];
2277  const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
2278  const int height_of_mb = 4 - s->avctx->lowres;
2279 
2280  s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2281  s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2282  s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2283  s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2284  s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2285  s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2286  //block_index is not used by mpeg2, so it is not affected by chroma_format
2287 
2288  s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb);
2289  s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2290  s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2291 
2293  {
2294  if(s->picture_structure==PICT_FRAME){
2295  s->dest[0] += s->mb_y * linesize << height_of_mb;
2296  s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2297  s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2298  }else{
2299  s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb;
2300  s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2301  s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2303  }
2304  }
2305 }
2306 
2308  int i;
2309  MpegEncContext *s = avctx->priv_data;
2310 
2311  if (!s || !s->picture)
2312  return;
2313 
2314  for (i = 0; i < MAX_PICTURE_COUNT; i++)
2315  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2317 
2321 
2322  s->mb_x= s->mb_y= 0;
2323  s->closed_gop= 0;
2324 
2325  s->parse_context.state= -1;
2327  s->parse_context.overread= 0;
2329  s->parse_context.index= 0;
2330  s->parse_context.last_index= 0;
2331  s->bitstream_buffer_size=0;
2332  s->pp_time=0;
2333 }
2334 
2335 /**
2336  * set qscale and update qscale dependent variables.
2337  */
2338 void ff_set_qscale(MpegEncContext * s, int qscale)
2339 {
2340  if (qscale < 1)
2341  qscale = 1;
2342  else if (qscale > 31)
2343  qscale = 31;
2344 
2345  s->qscale = qscale;
2346  s->chroma_qscale= s->chroma_qscale_table[qscale];
2347 
2348  s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2350 }
2351 
2353 {
2356 }
int last_time_base
Definition: mpegvideo.h:388
int bitstream_buffer_size
Definition: mpegvideo.h:416
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free.
Definition: motion_est.h:52
#define AV_CODEC_FLAG_INTERLACED_ME
interlaced motion estimation
Definition: avcodec.h:904
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
Definition: frame.c:54
IDCTDSPContext idsp
Definition: mpegvideo.h:230
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:38
#define NULL
Definition: coverity.c:32
static int init_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:358
int ff_thread_can_start_frame(AVCodecContext *avctx)
const struct AVCodec * codec
Definition: avcodec.h:1549
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:244
av_cold void ff_mpv_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:43
discard all frames except keyframes
Definition: avcodec.h:802
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2274
int picture_number
Definition: mpegvideo.h:127
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:83
av_cold void ff_mpv_common_init_neon(MpegEncContext *s)
Definition: mpegvideo.c:126
ScanTable intra_v_scantable
Definition: mpegvideo.h:93
av_cold void ff_mpegvideodsp_init(MpegVideoDSPContext *c)
Definition: mpegvideodsp.c:110
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:534
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:248
int dpcm_direction
Definition: mpegvideo.h:512
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:153
#define MV_TYPE_FIELD
2 vectors, one per field
Definition: mpegvideo.h:269
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:188
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegpicture.h:36
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1728
op_pixels_func avg_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:68
static av_always_inline void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64], int lowres_flag, int is_mpeg12)
Definition: mpegvideo.c:1952
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static void chroma_4mv_motion_lowres(MpegEncContext *s, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, h264_chroma_mc_func *pix_op, int mx, int my)
Definition: mpegvideo.c:1644
uint8_t * coded_block_base
Definition: mpegvideo.h:191
void(* h264_chroma_mc_func)(uint8_t *dst, uint8_t *src, ptrdiff_t srcStride, int h, int x, int y)
Definition: h264chroma.h:25
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:417
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:154
int16_t(*[3] ac_val)[16]
used for MPEG-4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:194
MJPEG encoder.
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:132
h264_chroma_mc_func put_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:28
#define me
static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
Definition: mpegvideo.c:276
static void gray_frame(AVFrame *frame)
Definition: mpegvideo.c:1187
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:438
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
Definition: mpegpicture.h:85
uint8_t * bitstream_buffer
Definition: mpegvideo.h:415
enum AVCodecID codec_id
Definition: mpegvideo.h:112
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:79
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1750
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:254
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:240
int studio_profile
Definition: mpegvideo.h:384
uint8_t raster_end[64]
Definition: idctdsp.h:34
static int lowest_referenced_row(MpegEncContext *s, int dir)
find the lowest MB row referenced in the MVs
Definition: mpegvideo.c:1846
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
uint32_t * score_map
map to store the scores
Definition: motion_est.h:59
mpegvideo header.
discard all
Definition: avcodec.h:803
uint8_t permutated[64]
Definition: idctdsp.h:33
static void free_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:415
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2767
int padding_bug_score
used to detect the VERY common padding bug in MPEG-4
Definition: mpegvideo.h:411
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
Definition: mpegpicture.c:361
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:133
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2700
#define src
Definition: vp8dsp.c:254
void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last, int y, int h, int picture_structure, int first_field, int low_delay)
Draw a horizontal band if supported.
Definition: mpegutils.c:51
int frame_start_found
Definition: parser.h:34
int qscale
QP.
Definition: mpegvideo.h:204
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:87
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:250
enum AVPictureType last_picture
Definition: movenc.c:68
int chroma_x_shift
Definition: mpegvideo.h:485
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:114
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:528
int field_select[2][2]
Definition: mpegvideo.h:277
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:532
int block_wrap[6]
Definition: mpegvideo.h:294
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:82
Macro definitions for various function/variable attributes.
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:242
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
Definition: mpegvideo.c:437
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:1911
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:530
const uint8_t ff_mpeg2_non_linear_qscale[32]
Definition: mpegvideodata.c:27
static int16_t block[64]
Definition: dct.c:115
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2267
void(* emulated_edge_mc)(uint8_t *dst, const uint8_t *src, ptrdiff_t dst_linesize, ptrdiff_t src_linesize, int block_w, int block_h, int src_x, int src_y, int w, int h)
Copy a rectangular area of samples to a temporary buffer and replicate the border samples...
Definition: videodsp.h:63
int context_reinit
Definition: mpegvideo.h:563
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:34
int16_t * dc_val_base
Definition: mpegvideo.h:186
ScratchpadContext sc
Definition: mpegvideo.h:202
uint8_t
#define ME_MAP_SIZE
Definition: motion_est.h:38
#define av_cold
Definition: attributes.h:82
av_cold void ff_mpv_common_init_axp(MpegEncContext *s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
enum OutputFormat out_format
output format
Definition: mpegvideo.h:104
#define f(width, name)
Definition: cbs_vp9.c:255
int ff_mpv_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1054
int noise_reduction
Definition: mpegvideo.h:581
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:200
Multithreading support functions.
int frame_skip_threshold
Definition: mpegvideo.h:575
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
void ff_free_picture_tables(Picture *pic)
Definition: mpegpicture.c:460
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
int interlaced_dct
Definition: mpegvideo.h:490
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Definition: mpegpicture.c:446
int intra_dc_precision
Definition: mpegvideo.h:463
static AVFrame * frame
quarterpel DSP functions
void ff_mpv_common_init_ppc(MpegEncContext *s)
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
#define height
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:251
float * cplx_tab
Definition: mpegvideo.h:559
#define ff_dlog(a,...)
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3730
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:392
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Definition: mpegvideo.c:350
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:373
av_cold void ff_mpv_idct_init(MpegEncContext *s)
Definition: mpegvideo.c:330
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2775
int mpeg4_studio_profile
Definition: idctdsp.h:99
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:120
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:870
high precision timer, useful to profile code
int16_t(*[2][2] p_field_mv_table_base)[2]
Definition: mpegvideo.h:246
#define FF_BUG_IEDGE
Definition: avcodec.h:2585
#define av_log(a,...)
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:2338
static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
Definition: mpegvideo.c:270
int intra_only
if true, only intra pictures are generated
Definition: mpegvideo.h:102
ThreadFrame tf
Definition: mpegpicture.h:47
#define U(x)
Definition: vp56_arith.h:37
int16_t * dc_val[3]
used for MPEG-4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:187
enum AVCodecID id
Definition: avcodec.h:3455
int h263_plus
H.263+ headers.
Definition: mpegvideo.h:109
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:156
unsigned int buffer_size
Definition: parser.h:32
int width
Definition: frame.h:284
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int last_dc[3]
last DC values for MPEG-1
Definition: mpegvideo.h:185
static void add_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size)
Definition: mpegvideo.c:1890
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:195
int chroma_y_shift
Definition: mpegvideo.h:486
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:405
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
Definition: mpegpicture.h:37
#define AVERROR(e)
Definition: error.h:43
#define MAX_PICTURE_COUNT
Definition: mpegpicture.h:32
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2526
ERContext er
Definition: mpegvideo.h:565
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2814
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:219
int reference
Definition: mpegpicture.h:87
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:141
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:526
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:520
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1620
#define wrap(func)
Definition: neontest.h:65
static void put_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1882
simple assert() macros that are a bit more flexible than ISO C assert().
int overread_index
the index into ParseContext.buffer of the overread bytes
Definition: parser.h:36
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:53
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:401
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:291
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:406
uint8_t *[2][2] b_field_select_table
Definition: mpegvideo.h:257
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:283
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1133
#define FFMAX(a, b)
Definition: common.h:94
av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:454
#define fail()
Definition: checkasm.h:117
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2307
return
av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
Definition: hpeldsp.c:338
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:126
int * lambda_table
Definition: mpegvideo.h:208
uint8_t * error_status_table
const uint8_t ff_alternate_horizontal_scan[64]
Definition: mpegvideodata.c:89
int ff_mpeg_er_init(MpegEncContext *s)
Definition: mpeg_er.c:100
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
Definition: mem.c:488
common internal API header
#define MAX_THREADS
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:282
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
void(* draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)
If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band...
Definition: avcodec.h:1775
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:1446
int progressive_frame
Definition: mpegvideo.h:488
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:309
#define UPDATE_PICTURE(pic)
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:895
int top_field_first
Definition: mpegvideo.h:465
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2806
uint8_t * er_temp_buffer
int overread
the number of bytes which where irreversibly read from the next frame
Definition: parser.h:35
#define FFMIN(a, b)
Definition: common.h:96
int last_index
Definition: parser.h:31
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed B-frames
Definition: mpegvideo.h:360
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:175
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:174
#define width
int width
picture width / height.
Definition: avcodec.h:1713
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for B-frame encodin...
Definition: mpegvideo.h:196
uint8_t w
Definition: llviddspenc.c:38
int16_t(*[2] motion_val)[2]
Definition: mpegpicture.h:53
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:470
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:417
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
int16_t(* ac_val_base)[16]
Definition: mpegvideo.h:193
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:874
#define s(width, name)
Definition: cbs_vp9.c:257
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:2807
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:247
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:241
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:505
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
MotionEstContext me
Definition: mpegvideo.h:282
int frame_skip_factor
Definition: mpegvideo.h:576
int n
Definition: avisynth_c.h:684
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:96
av_cold void ff_mpv_common_init_mips(MpegEncContext *s)
int mb_decision
macroblock decision mode
Definition: avcodec.h:2028
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:198
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegutils.c:103
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: mpegvideo.c:495
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:220
void ff_mpv_decode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for decoding.
Definition: mpegvideo.c:671
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2795
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:293
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:297
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:491
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:299
#define MV_TYPE_16X16
1 vector for the whole mb
Definition: mpegvideo.h:266
static void clear_context(MpegEncContext *s)
Definition: mpegvideo.c:812
AVBufferRef * qscale_table_buf
Definition: mpegpicture.h:49
#define MV_DIR_BACKWARD
Definition: mpegvideo.h:263
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:243
int coded_picture_number
picture number in bitstream order
Definition: frame.h:340
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
uint8_t * buffer
Definition: parser.h:29
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:155
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:134
BlockDSPContext bdsp
Definition: mpegvideo.h:226
enum AVDiscard skip_idct
Skip IDCT/dequantization for selected frames.
Definition: avcodec.h:3001
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
int debug
debug
Definition: avcodec.h:2621
main external API structure.
Definition: avcodec.h:1540
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int shared, int encoding, int chroma_x_shift, int chroma_y_shift, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
Allocate a Picture.
Definition: mpegpicture.c:231
ScanTable intra_scantable
Definition: mpegvideo.h:91
uint8_t * data
The data buffer.
Definition: buffer.h:89
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
Definition: mpegvideo.h:192
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:100
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1565
static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:111
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:56
#define MV_TYPE_16X8
2 vectors, one per 16x8 block
Definition: mpegvideo.h:268
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1439
uint32_t state
contains the last few bytes in MSB order
Definition: parser.h:33
Picture * picture
main picture buffer
Definition: mpegvideo.h:136
int progressive_sequence
Definition: mpegvideo.h:456
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:79
int coded_height
Definition: avcodec.h:1728
ScanTable intra_h_scantable
Definition: mpegvideo.h:92
op_pixels_func put_no_rnd_pixels_tab[4][4]
Halfpel motion compensation with no rounding (a+b)>>1.
Definition: hpeldsp.h:82
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced B-frame encoding.
Definition: mpegvideo.h:255
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:199
int closed_gop
MPEG1/2 GOP is closed.
Definition: mpegvideo.h:211
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me, ScratchpadContext *sc, int linesize)
Definition: mpegpicture.c:57
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:1790
#define FF_DEBUG_DCT_COEFF
Definition: avcodec.h:2633
struct AVFrame * f
Definition: mpegpicture.h:46
#define FF_MB_DECISION_RD
rate distortion
Definition: avcodec.h:2031
int context_initialized
Definition: mpegvideo.h:124
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:135
#define s1
Definition: regdef.h:38
static int ff_h263_round_chroma(int x)
Definition: motion_est.h:101
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo.c:1207
int f_code
forward MV resolution
Definition: mpegvideo.h:238
#define COPY(a)
#define MV_DIR_FORWARD
Definition: mpegvideo.h:262
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:115
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
int size
Size of data in bytes.
Definition: buffer.h:93
int h263_pred
use MPEG-4/H.263 ac/dc predictions
Definition: mpegvideo.h:105
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:252
static int init_context_frame(MpegEncContext *s)
Initialize and allocates MpegEncContext fields dependent on the resolution.
Definition: mpegvideo.c:691
uint8_t *[2] p_field_select_table
Definition: mpegvideo.h:256
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode B-frame encoding.
Definition: mpegvideo.h:253
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:189
uint8_t level
Definition: svq3.c:207
qpel_mc_func(* qpel_avg)[16]
Definition: motion_est.h:92
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:276
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode B-frame encoding.
Definition: mpegvideo.h:249
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:131
static void dct_unquantize_h263_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:209
MpegEncContext.
Definition: mpegvideo.h:81
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:183
int8_t * qscale_table
Definition: mpegpicture.h:50
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
Deallocate a picture.
Definition: mpegpicture.c:294
A reference to a data buffer.
Definition: buffer.h:81
discard all non reference
Definition: avcodec.h:799
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int
MpegVideoDSPContext mdsp
Definition: mpegvideo.h:232
int(* dct_error_sum)[64]
Definition: mpegvideo.h:332
common internal api header.
int32_t(* block32)[12][64]
Definition: mpegvideo.h:511
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:130
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Definition: mpegvideo.c:676
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
const uint8_t ff_default_chroma_qscale_table[32]
Definition: mpegvideodata.c:21
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:72
uint8_t * dest[3]
Definition: mpegvideo.h:295
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)
Definition: internal.h:140
static av_cold int dct_init(MpegEncContext *s)
Definition: mpegvideo.c:283
int last_pict_type
Definition: mpegvideo.h:214
static void dct_unquantize_h263_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:243
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:162
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:182
Bi-dir predicted.
Definition: avutil.h:276
int index
Definition: parser.h:30
int workaround_bugs
Work around bugs in encoders which sometimes cannot be detected automatically.
Definition: avcodec.h:2570
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
Definition: mpegpicture.h:39
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (H.263)
Definition: mpegvideo.h:190
const uint8_t ff_alternate_vertical_scan[64]
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
Definition: mpegvideo.c:467
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:522
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:782
static int lowres
Definition: ffplay.c:334
H264ChromaContext h264chroma
Definition: mpegvideo.h:228
int16_t(* blocks)[12][64]
Definition: mpegvideo.h:508
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:29
int slices
Number of slices.
Definition: avcodec.h:2187
void * priv_data
Definition: avcodec.h:1567
#define PICT_FRAME
Definition: mpegutils.h:39
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:894
int picture_structure
Definition: mpegvideo.h:460
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: idctdsp.c:29
VideoDSPContext vdsp
Definition: mpegvideo.h:236
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
Definition: idctdsp.c:238
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:378
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1431
#define MV_TYPE_DMV
2 vectors, special mpeg2 Dual Prime Vectors
Definition: mpegvideo.h:270
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2255
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:507
ParseContext parse_context
Definition: mpegvideo.h:362
static void add_dequant_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1898
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:168
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:304
#define FF_DEBUG_NOMC
Definition: avcodec.h:2646
static av_always_inline void mpeg_motion_lowres(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_based, int bottom_field, int field_select, uint8_t **ref_picture, h264_chroma_mc_func *pix_op, int motion_x, int motion_y, int h, int mb_y)
Definition: mpegvideo.c:1505
int chroma_qscale
chroma QP
Definition: mpegvideo.h:205
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:524
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:648
static void free_context_frame(MpegEncContext *s)
Frees and resets MpegEncContext fields depending on the resolution.
Definition: mpegvideo.c:1005
static int hpel_motion_lowres(MpegEncContext *s, uint8_t *dest, uint8_t *src, int field_based, int field_select, int src_x, int src_y, int width, int height, ptrdiff_t stride, int h_edge_pos, int v_edge_pos, int w, int h, h264_chroma_mc_func *pix_op, int motion_x, int motion_y)
Definition: mpegvideo.c:1458
int height
Definition: frame.h:284
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegpicture.h:56
#define av_freep(p)
int16_t(* dpcm_macroblock)[3][256]
Definition: mpegvideo.h:513
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:119
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:90
#define av_always_inline
Definition: attributes.h:39
uint8_t * temp
Definition: motion_est.h:56
#define FFSWAP(type, a, b)
Definition: common.h:99
#define stride
#define MV_TYPE_8X8
4 vectors (H.263, MPEG-4 4MV)
Definition: mpegvideo.h:267
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:245
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:239
float * bits_tab
Definition: mpegvideo.h:559
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
void ff_mpv_report_decode_progress(MpegEncContext *s)
Definition: mpegvideo.c:2352
static void MPV_motion_lowres(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, h264_chroma_mc_func *pix_op)
motion compensation of a single macroblock
Definition: mpegvideo.c:1712
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
Definition: internal.h:149
Predicted.
Definition: avutil.h:275
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
HpelDSPContext hdsp
Definition: mpegvideo.h:229