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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  ff_idctdsp_init(&s->idsp, s->avctx);
333 
334  /* load & permutate scantables
335  * note: only wmv uses different ones
336  */
337  if (s->alternate_scan) {
340  } else {
343  }
346 }
347 
348 static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
349 {
350  return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
352  s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
353  &s->linesize, &s->uvlinesize);
354 }
355 
357 {
358  int y_size = s->b8_stride * (2 * s->mb_height + 1);
359  int c_size = s->mb_stride * (s->mb_height + 1);
360  int yc_size = y_size + 2 * c_size;
361  int i;
362 
363  if (s->mb_height & 1)
364  yc_size += 2*s->b8_stride + 2*s->mb_stride;
365 
366  s->sc.edge_emu_buffer =
367  s->me.scratchpad =
368  s->me.temp =
369  s->sc.rd_scratchpad =
370  s->sc.b_scratchpad =
371  s->sc.obmc_scratchpad = NULL;
372 
373  if (s->encoding) {
374  FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
375  ME_MAP_SIZE * sizeof(uint32_t), fail)
377  ME_MAP_SIZE * sizeof(uint32_t), fail)
378  if (s->noise_reduction) {
380  2 * 64 * sizeof(int), fail)
381  }
382  }
383  FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
384  s->block = s->blocks[0];
385 
386  for (i = 0; i < 12; i++) {
387  s->pblocks[i] = &s->block[i];
388  }
389  if (s->avctx->codec_tag == AV_RL32("VCR2")) {
390  // exchange uv
391  FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
392  }
393 
394  if (s->out_format == FMT_H263) {
395  /* ac values */
397  yc_size * sizeof(int16_t) * 16, fail);
398  s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
399  s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
400  s->ac_val[2] = s->ac_val[1] + c_size;
401  }
402 
403  return 0;
404 fail:
405  return -1; // free() through ff_mpv_common_end()
406 }
407 
409 {
410  if (!s)
411  return;
412 
414  av_freep(&s->me.scratchpad);
415  s->me.temp =
416  s->sc.rd_scratchpad =
417  s->sc.b_scratchpad =
418  s->sc.obmc_scratchpad = NULL;
419 
420  av_freep(&s->dct_error_sum);
421  av_freep(&s->me.map);
422  av_freep(&s->me.score_map);
423  av_freep(&s->blocks);
424  av_freep(&s->ac_val_base);
425  s->block = NULL;
426 }
427 
429 {
430 #define COPY(a) bak->a = src->a
431  COPY(sc.edge_emu_buffer);
432  COPY(me.scratchpad);
433  COPY(me.temp);
434  COPY(sc.rd_scratchpad);
435  COPY(sc.b_scratchpad);
436  COPY(sc.obmc_scratchpad);
437  COPY(me.map);
438  COPY(me.score_map);
439  COPY(blocks);
440  COPY(block);
441  COPY(start_mb_y);
442  COPY(end_mb_y);
443  COPY(me.map_generation);
444  COPY(pb);
445  COPY(dct_error_sum);
446  COPY(dct_count[0]);
447  COPY(dct_count[1]);
448  COPY(ac_val_base);
449  COPY(ac_val[0]);
450  COPY(ac_val[1]);
451  COPY(ac_val[2]);
452 #undef COPY
453 }
454 
456 {
457  MpegEncContext bak;
458  int i, ret;
459  // FIXME copy only needed parts
460  // START_TIMER
461  backup_duplicate_context(&bak, dst);
462  memcpy(dst, src, sizeof(MpegEncContext));
463  backup_duplicate_context(dst, &bak);
464  for (i = 0; i < 12; i++) {
465  dst->pblocks[i] = &dst->block[i];
466  }
467  if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
468  // exchange uv
469  FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
470  }
471  if (!dst->sc.edge_emu_buffer &&
472  (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
473  &dst->sc, dst->linesize)) < 0) {
474  av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
475  "scratch buffers.\n");
476  return ret;
477  }
478  // STOP_TIMER("update_duplicate_context")
479  // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
480  return 0;
481 }
482 
484  const AVCodecContext *src)
485 {
486  int i, ret;
487  MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
488 
489  if (dst == src)
490  return 0;
491 
492  av_assert0(s != s1);
493 
494  // FIXME can parameters change on I-frames?
495  // in that case dst may need a reinit
496  if (!s->context_initialized) {
497  int err;
498  memcpy(s, s1, sizeof(MpegEncContext));
499 
500  s->avctx = dst;
501  s->bitstream_buffer = NULL;
503 
504  if (s1->context_initialized){
505 // s->picture_range_start += MAX_PICTURE_COUNT;
506 // s->picture_range_end += MAX_PICTURE_COUNT;
507  ff_mpv_idct_init(s);
508  if((err = ff_mpv_common_init(s)) < 0){
509  memset(s, 0, sizeof(MpegEncContext));
510  s->avctx = dst;
511  return err;
512  }
513  }
514  }
515 
516  if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
517  s->context_reinit = 0;
518  s->height = s1->height;
519  s->width = s1->width;
520  if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
521  return ret;
522  }
523 
524  s->avctx->coded_height = s1->avctx->coded_height;
525  s->avctx->coded_width = s1->avctx->coded_width;
526  s->avctx->width = s1->avctx->width;
527  s->avctx->height = s1->avctx->height;
528 
529  s->coded_picture_number = s1->coded_picture_number;
530  s->picture_number = s1->picture_number;
531 
532  av_assert0(!s->picture || s->picture != s1->picture);
533  if(s->picture)
534  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
535  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
536  if (s1->picture && s1->picture[i].f->buf[0] &&
537  (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
538  return ret;
539  }
540 
541 #define UPDATE_PICTURE(pic)\
542 do {\
543  ff_mpeg_unref_picture(s->avctx, &s->pic);\
544  if (s1->pic.f && s1->pic.f->buf[0])\
545  ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
546  else\
547  ret = ff_update_picture_tables(&s->pic, &s1->pic);\
548  if (ret < 0)\
549  return ret;\
550 } while (0)
551 
552  UPDATE_PICTURE(current_picture);
554  UPDATE_PICTURE(next_picture);
555 
556 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
557  ((pic && pic >= old_ctx->picture && \
558  pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
559  &new_ctx->picture[pic - old_ctx->picture] : NULL)
560 
561  s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
562  s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
563  s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
564 
565  // Error/bug resilience
566  s->next_p_frame_damaged = s1->next_p_frame_damaged;
567  s->workaround_bugs = s1->workaround_bugs;
568  s->padding_bug_score = s1->padding_bug_score;
569 
570  // MPEG-4 timing info
571  memcpy(&s->last_time_base, &s1->last_time_base,
572  (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
573  (char *) &s1->last_time_base);
574 
575  // B-frame info
576  s->max_b_frames = s1->max_b_frames;
577  s->low_delay = s1->low_delay;
578  s->droppable = s1->droppable;
579 
580  // DivX handling (doesn't work)
581  s->divx_packed = s1->divx_packed;
582 
583  if (s1->bitstream_buffer) {
584  if (s1->bitstream_buffer_size +
588  s1->allocated_bitstream_buffer_size);
589  if (!s->bitstream_buffer) {
590  s->bitstream_buffer_size = 0;
591  return AVERROR(ENOMEM);
592  }
593  }
594  s->bitstream_buffer_size = s1->bitstream_buffer_size;
595  memcpy(s->bitstream_buffer, s1->bitstream_buffer,
596  s1->bitstream_buffer_size);
597  memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
599  }
600 
601  // linesize-dependent scratch buffer allocation
602  if (!s->sc.edge_emu_buffer)
603  if (s1->linesize) {
604  if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
605  &s->sc, s1->linesize) < 0) {
606  av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
607  "scratch buffers.\n");
608  return AVERROR(ENOMEM);
609  }
610  } else {
611  av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
612  "be allocated due to unknown size.\n");
613  }
614 
615  // MPEG-2/interlacing info
616  memcpy(&s->progressive_sequence, &s1->progressive_sequence,
617  (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
618 
619  if (!s1->first_field) {
620  s->last_pict_type = s1->pict_type;
621  if (s1->current_picture_ptr)
622  s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
623  }
624 
625  return 0;
626 }
627 
628 /**
629  * Set the given MpegEncContext to common defaults
630  * (same for encoding and decoding).
631  * The changed fields will not depend upon the
632  * prior state of the MpegEncContext.
633  */
635 {
636  s->y_dc_scale_table =
639  s->progressive_frame = 1;
640  s->progressive_sequence = 1;
642 
643  s->coded_picture_number = 0;
644  s->picture_number = 0;
645 
646  s->f_code = 1;
647  s->b_code = 1;
648 
649  s->slice_context_count = 1;
650 }
651 
652 /**
653  * Set the given MpegEncContext to defaults for decoding.
654  * the changed fields will not depend upon
655  * the prior state of the MpegEncContext.
656  */
658 {
660 }
661 
663 {
664  s->avctx = avctx;
665  s->width = avctx->coded_width;
666  s->height = avctx->coded_height;
667  s->codec_id = avctx->codec->id;
668  s->workaround_bugs = avctx->workaround_bugs;
669 
670  /* convert fourcc to upper case */
671  s->codec_tag = avpriv_toupper4(avctx->codec_tag);
672 }
673 
674 /**
675  * Initialize and allocates MpegEncContext fields dependent on the resolution.
676  */
678 {
679  int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
680 
681  s->mb_width = (s->width + 15) / 16;
682  s->mb_stride = s->mb_width + 1;
683  s->b8_stride = s->mb_width * 2 + 1;
684  mb_array_size = s->mb_height * s->mb_stride;
685  mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
686 
687  /* set default edge pos, will be overridden
688  * in decode_header if needed */
689  s->h_edge_pos = s->mb_width * 16;
690  s->v_edge_pos = s->mb_height * 16;
691 
692  s->mb_num = s->mb_width * s->mb_height;
693 
694  s->block_wrap[0] =
695  s->block_wrap[1] =
696  s->block_wrap[2] =
697  s->block_wrap[3] = s->b8_stride;
698  s->block_wrap[4] =
699  s->block_wrap[5] = s->mb_stride;
700 
701  y_size = s->b8_stride * (2 * s->mb_height + 1);
702  c_size = s->mb_stride * (s->mb_height + 1);
703  yc_size = y_size + 2 * c_size;
704 
705  if (s->mb_height & 1)
706  yc_size += 2*s->b8_stride + 2*s->mb_stride;
707 
708  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
709  fail); // error resilience code looks cleaner with this
710  for (y = 0; y < s->mb_height; y++)
711  for (x = 0; x < s->mb_width; x++)
712  s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
713 
714  s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
715 
716  if (s->encoding) {
717  /* Allocate MV tables */
718  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
719  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
720  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
721  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
722  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
723  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
724  s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
730 
731  /* Allocate MB type table */
732  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
733 
734  FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
735 
737  mb_array_size * sizeof(float), fail);
739  mb_array_size * sizeof(float), fail);
740 
741  }
742 
743  if (s->codec_id == AV_CODEC_ID_MPEG4 ||
745  /* interlaced direct mode decoding tables */
746  for (i = 0; i < 2; i++) {
747  int j, k;
748  for (j = 0; j < 2; j++) {
749  for (k = 0; k < 2; k++) {
751  s->b_field_mv_table_base[i][j][k],
752  mv_table_size * 2 * sizeof(int16_t),
753  fail);
754  s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
755  s->mb_stride + 1;
756  }
757  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
758  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
759  s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
760  }
761  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
762  }
763  }
764  if (s->out_format == FMT_H263) {
765  /* cbp values */
766  FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
767  s->coded_block = s->coded_block_base + s->b8_stride + 1;
768 
769  /* cbp, ac_pred, pred_dir */
770  FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
771  FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
772  }
773 
774  if (s->h263_pred || s->h263_plus || !s->encoding) {
775  /* dc values */
776  // MN: we need these for error resilience of intra-frames
777  FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
778  s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
779  s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
780  s->dc_val[2] = s->dc_val[1] + c_size;
781  for (i = 0; i < yc_size; i++)
782  s->dc_val_base[i] = 1024;
783  }
784 
785  /* which mb is an intra block */
786  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
787  memset(s->mbintra_table, 1, mb_array_size);
788 
789  /* init macroblock skip table */
790  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
791  // Note the + 1 is for a quicker MPEG-4 slice_end detection
792 
793  return ff_mpeg_er_init(s);
794 fail:
795  return AVERROR(ENOMEM);
796 }
797 
799 {
800  int i, j, k;
801 
802  memset(&s->next_picture, 0, sizeof(s->next_picture));
803  memset(&s->last_picture, 0, sizeof(s->last_picture));
804  memset(&s->current_picture, 0, sizeof(s->current_picture));
805  memset(&s->new_picture, 0, sizeof(s->new_picture));
806 
807  memset(s->thread_context, 0, sizeof(s->thread_context));
808 
809  s->me.map = NULL;
810  s->me.score_map = NULL;
811  s->dct_error_sum = NULL;
812  s->block = NULL;
813  s->blocks = NULL;
814  memset(s->pblocks, 0, sizeof(s->pblocks));
815  s->ac_val_base = NULL;
816  s->ac_val[0] =
817  s->ac_val[1] =
818  s->ac_val[2] =NULL;
819  s->sc.edge_emu_buffer = NULL;
820  s->me.scratchpad = NULL;
821  s->me.temp =
822  s->sc.rd_scratchpad =
823  s->sc.b_scratchpad =
824  s->sc.obmc_scratchpad = NULL;
825 
826 
827  s->bitstream_buffer = NULL;
829  s->picture = NULL;
830  s->mb_type = NULL;
831  s->p_mv_table_base = NULL;
837  s->p_mv_table = NULL;
838  s->b_forw_mv_table = NULL;
839  s->b_back_mv_table = NULL;
842  s->b_direct_mv_table = NULL;
843  for (i = 0; i < 2; i++) {
844  for (j = 0; j < 2; j++) {
845  for (k = 0; k < 2; k++) {
846  s->b_field_mv_table_base[i][j][k] = NULL;
847  s->b_field_mv_table[i][j][k] = NULL;
848  }
849  s->b_field_select_table[i][j] = NULL;
850  s->p_field_mv_table_base[i][j] = NULL;
851  s->p_field_mv_table[i][j] = NULL;
852  }
853  s->p_field_select_table[i] = NULL;
854  }
855 
856  s->dc_val_base = NULL;
857  s->coded_block_base = NULL;
858  s->mbintra_table = NULL;
859  s->cbp_table = NULL;
860  s->pred_dir_table = NULL;
861 
862  s->mbskip_table = NULL;
863 
865  s->er.er_temp_buffer = NULL;
866  s->mb_index2xy = NULL;
867  s->lambda_table = NULL;
868 
869  s->cplx_tab = NULL;
870  s->bits_tab = NULL;
871 }
872 
873 /**
874  * init common structure for both encoder and decoder.
875  * this assumes that some variables like width/height are already set
876  */
878 {
879  int i, ret;
880  int nb_slices = (HAVE_THREADS &&
882  s->avctx->thread_count : 1;
883 
884  clear_context(s);
885 
886  if (s->encoding && s->avctx->slices)
887  nb_slices = s->avctx->slices;
888 
890  s->mb_height = (s->height + 31) / 32 * 2;
891  else
892  s->mb_height = (s->height + 15) / 16;
893 
894  if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
896  "decoding to AV_PIX_FMT_NONE is not supported.\n");
897  return -1;
898  }
899 
900  if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
901  int max_slices;
902  if (s->mb_height)
903  max_slices = FFMIN(MAX_THREADS, s->mb_height);
904  else
905  max_slices = MAX_THREADS;
906  av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
907  " reducing to %d\n", nb_slices, max_slices);
908  nb_slices = max_slices;
909  }
910 
911  if ((s->width || s->height) &&
912  av_image_check_size(s->width, s->height, 0, s->avctx))
913  return -1;
914 
915  dct_init(s);
916 
917  /* set chroma shifts */
919  &s->chroma_x_shift,
920  &s->chroma_y_shift);
921  if (ret)
922  return ret;
923 
925  MAX_PICTURE_COUNT * sizeof(Picture), fail);
926  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
927  s->picture[i].f = av_frame_alloc();
928  if (!s->picture[i].f)
929  goto fail;
930  }
932  if (!s->next_picture.f)
933  goto fail;
935  if (!s->last_picture.f)
936  goto fail;
938  if (!s->current_picture.f)
939  goto fail;
941  if (!s->new_picture.f)
942  goto fail;
943 
944  if (init_context_frame(s))
945  goto fail;
946 
947  s->parse_context.state = -1;
948 
949  s->context_initialized = 1;
950  memset(s->thread_context, 0, sizeof(s->thread_context));
951  s->thread_context[0] = s;
952 
953 // if (s->width && s->height) {
954  if (nb_slices > 1) {
955  for (i = 0; i < nb_slices; i++) {
956  if (i) {
957  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
958  if (!s->thread_context[i])
959  goto fail;
960  }
961  if (init_duplicate_context(s->thread_context[i]) < 0)
962  goto fail;
963  s->thread_context[i]->start_mb_y =
964  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
965  s->thread_context[i]->end_mb_y =
966  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
967  }
968  } else {
969  if (init_duplicate_context(s) < 0)
970  goto fail;
971  s->start_mb_y = 0;
972  s->end_mb_y = s->mb_height;
973  }
974  s->slice_context_count = nb_slices;
975 // }
976 
977  return 0;
978  fail:
980  return -1;
981 }
982 
983 /**
984  * Frees and resets MpegEncContext fields depending on the resolution.
985  * Is used during resolution changes to avoid a full reinitialization of the
986  * codec.
987  */
989 {
990  int i, j, k;
991 
992  av_freep(&s->mb_type);
999  s->p_mv_table = NULL;
1000  s->b_forw_mv_table = NULL;
1001  s->b_back_mv_table = NULL;
1004  s->b_direct_mv_table = NULL;
1005  for (i = 0; i < 2; i++) {
1006  for (j = 0; j < 2; j++) {
1007  for (k = 0; k < 2; k++) {
1008  av_freep(&s->b_field_mv_table_base[i][j][k]);
1009  s->b_field_mv_table[i][j][k] = NULL;
1010  }
1011  av_freep(&s->b_field_select_table[i][j]);
1012  av_freep(&s->p_field_mv_table_base[i][j]);
1013  s->p_field_mv_table[i][j] = NULL;
1014  }
1016  }
1017 
1018  av_freep(&s->dc_val_base);
1020  av_freep(&s->mbintra_table);
1021  av_freep(&s->cbp_table);
1022  av_freep(&s->pred_dir_table);
1023 
1024  av_freep(&s->mbskip_table);
1025 
1027  av_freep(&s->er.er_temp_buffer);
1028  av_freep(&s->mb_index2xy);
1029  av_freep(&s->lambda_table);
1030 
1031  av_freep(&s->cplx_tab);
1032  av_freep(&s->bits_tab);
1033 
1034  s->linesize = s->uvlinesize = 0;
1035 }
1036 
1038 {
1039  int i, err = 0;
1040 
1041  if (!s->context_initialized)
1042  return AVERROR(EINVAL);
1043 
1044  if (s->slice_context_count > 1) {
1045  for (i = 0; i < s->slice_context_count; i++) {
1047  }
1048  for (i = 1; i < s->slice_context_count; i++) {
1049  av_freep(&s->thread_context[i]);
1050  }
1051  } else
1053 
1054  free_context_frame(s);
1055 
1056  if (s->picture)
1057  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1058  s->picture[i].needs_realloc = 1;
1059  }
1060 
1061  s->last_picture_ptr =
1062  s->next_picture_ptr =
1064 
1065  // init
1067  s->mb_height = (s->height + 31) / 32 * 2;
1068  else
1069  s->mb_height = (s->height + 15) / 16;
1070 
1071  if ((s->width || s->height) &&
1072  (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1073  goto fail;
1074 
1075  if ((err = init_context_frame(s)))
1076  goto fail;
1077 
1078  memset(s->thread_context, 0, sizeof(s->thread_context));
1079  s->thread_context[0] = s;
1080 
1081  if (s->width && s->height) {
1082  int nb_slices = s->slice_context_count;
1083  if (nb_slices > 1) {
1084  for (i = 0; i < nb_slices; i++) {
1085  if (i) {
1086  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1087  if (!s->thread_context[i]) {
1088  err = AVERROR(ENOMEM);
1089  goto fail;
1090  }
1091  }
1092  if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1093  goto fail;
1094  s->thread_context[i]->start_mb_y =
1095  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1096  s->thread_context[i]->end_mb_y =
1097  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1098  }
1099  } else {
1100  err = init_duplicate_context(s);
1101  if (err < 0)
1102  goto fail;
1103  s->start_mb_y = 0;
1104  s->end_mb_y = s->mb_height;
1105  }
1106  s->slice_context_count = nb_slices;
1107  }
1108 
1109  return 0;
1110  fail:
1111  ff_mpv_common_end(s);
1112  return err;
1113 }
1114 
1115 /* init common structure for both encoder and decoder */
1117 {
1118  int i;
1119 
1120  if (!s)
1121  return ;
1122 
1123  if (s->slice_context_count > 1) {
1124  for (i = 0; i < s->slice_context_count; i++) {
1126  }
1127  for (i = 1; i < s->slice_context_count; i++) {
1128  av_freep(&s->thread_context[i]);
1129  }
1130  s->slice_context_count = 1;
1131  } else free_duplicate_context(s);
1132 
1134  s->parse_context.buffer_size = 0;
1135 
1138 
1139  if (s->picture) {
1140  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1142  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1143  av_frame_free(&s->picture[i].f);
1144  }
1145  }
1146  av_freep(&s->picture);
1159 
1160  free_context_frame(s);
1161 
1162  s->context_initialized = 0;
1163  s->last_picture_ptr =
1164  s->next_picture_ptr =
1166  s->linesize = s->uvlinesize = 0;
1167 }
1168 
1169 
1170 static void gray_frame(AVFrame *frame)
1171 {
1172  int i, h_chroma_shift, v_chroma_shift;
1173 
1174  av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1175 
1176  for(i=0; i<frame->height; i++)
1177  memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1178  for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1179  memset(frame->data[1] + frame->linesize[1]*i,
1180  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1181  memset(frame->data[2] + frame->linesize[2]*i,
1182  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1183  }
1184 }
1185 
1186 /**
1187  * generic function called after decoding
1188  * the header and before a frame is decoded.
1189  */
1191 {
1192  int i, ret;
1193  Picture *pic;
1194  s->mb_skipped = 0;
1195 
1196  if (!ff_thread_can_start_frame(avctx)) {
1197  av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1198  return -1;
1199  }
1200 
1201  /* mark & release old frames */
1202  if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1204  s->last_picture_ptr->f->buf[0]) {
1206  }
1207 
1208  /* release forgotten pictures */
1209  /* if (MPEG-124 / H.263) */
1210  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1211  if (&s->picture[i] != s->last_picture_ptr &&
1212  &s->picture[i] != s->next_picture_ptr &&
1213  s->picture[i].reference && !s->picture[i].needs_realloc) {
1214  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1215  }
1216  }
1217 
1221 
1222  /* release non reference frames */
1223  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1224  if (!s->picture[i].reference)
1225  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1226  }
1227 
1228  if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1229  // we already have an unused image
1230  // (maybe it was set before reading the header)
1231  pic = s->current_picture_ptr;
1232  } else {
1233  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1234  if (i < 0) {
1235  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1236  return i;
1237  }
1238  pic = &s->picture[i];
1239  }
1240 
1241  pic->reference = 0;
1242  if (!s->droppable) {
1243  if (s->pict_type != AV_PICTURE_TYPE_B)
1244  pic->reference = 3;
1245  }
1246 
1248 
1249  if (alloc_picture(s, pic, 0) < 0)
1250  return -1;
1251 
1252  s->current_picture_ptr = pic;
1253  // FIXME use only the vars from current_pic
1255  if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1257  if (s->picture_structure != PICT_FRAME)
1260  }
1264 
1266  // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1267  // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1269 
1270  if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1271  s->current_picture_ptr)) < 0)
1272  return ret;
1273 
1274  if (s->pict_type != AV_PICTURE_TYPE_B) {
1276  if (!s->droppable)
1278  }
1279  ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1281  s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1282  s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1284  s->pict_type, s->droppable);
1285 
1286  if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1287  (s->pict_type != AV_PICTURE_TYPE_I)) {
1288  int h_chroma_shift, v_chroma_shift;
1290  &h_chroma_shift, &v_chroma_shift);
1292  av_log(avctx, AV_LOG_DEBUG,
1293  "allocating dummy last picture for B frame\n");
1294  else if (s->pict_type != AV_PICTURE_TYPE_I)
1295  av_log(avctx, AV_LOG_ERROR,
1296  "warning: first frame is no keyframe\n");
1297 
1298  /* Allocate a dummy frame */
1299  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1300  if (i < 0) {
1301  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1302  return i;
1303  }
1304  s->last_picture_ptr = &s->picture[i];
1305 
1306  s->last_picture_ptr->reference = 3;
1307  s->last_picture_ptr->f->key_frame = 0;
1309 
1310  if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1311  s->last_picture_ptr = NULL;
1312  return -1;
1313  }
1314 
1315  if (!avctx->hwaccel) {
1316  for(i=0; i<avctx->height; i++)
1317  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1318  0x80, avctx->width);
1319  if (s->last_picture_ptr->f->data[2]) {
1320  for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1321  memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1322  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1323  memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1324  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1325  }
1326  }
1327 
1329  for(i=0; i<avctx->height; i++)
1330  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1331  }
1332  }
1333 
1334  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1335  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1336  }
1337  if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1338  s->pict_type == AV_PICTURE_TYPE_B) {
1339  /* Allocate a dummy frame */
1340  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1341  if (i < 0) {
1342  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1343  return i;
1344  }
1345  s->next_picture_ptr = &s->picture[i];
1346 
1347  s->next_picture_ptr->reference = 3;
1348  s->next_picture_ptr->f->key_frame = 0;
1350 
1351  if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1352  s->next_picture_ptr = NULL;
1353  return -1;
1354  }
1355  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1356  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1357  }
1358 
1359 #if 0 // BUFREF-FIXME
1360  memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1361  memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1362 #endif
1363  if (s->last_picture_ptr) {
1364  if (s->last_picture_ptr->f->buf[0] &&
1365  (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1366  s->last_picture_ptr)) < 0)
1367  return ret;
1368  }
1369  if (s->next_picture_ptr) {
1370  if (s->next_picture_ptr->f->buf[0] &&
1371  (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1372  s->next_picture_ptr)) < 0)
1373  return ret;
1374  }
1375 
1377  s->last_picture_ptr->f->buf[0]));
1378 
1379  if (s->picture_structure!= PICT_FRAME) {
1380  int i;
1381  for (i = 0; i < 4; i++) {
1383  s->current_picture.f->data[i] +=
1384  s->current_picture.f->linesize[i];
1385  }
1386  s->current_picture.f->linesize[i] *= 2;
1387  s->last_picture.f->linesize[i] *= 2;
1388  s->next_picture.f->linesize[i] *= 2;
1389  }
1390  }
1391 
1392  /* set dequantizer, we can't do it during init as
1393  * it might change for MPEG-4 and we can't do it in the header
1394  * decode as init is not called for MPEG-4 there yet */
1395  if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1398  } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1401  } else {
1404  }
1405 
1406  if (s->avctx->debug & FF_DEBUG_NOMC) {
1408  }
1409 
1410  return 0;
1411 }
1412 
1413 /* called after a frame has been decoded. */
1415 {
1416  emms_c();
1417 
1418  if (s->current_picture.reference)
1420 }
1421 
1423 {
1425  p->qscale_table, p->motion_val, &s->low_delay,
1426  s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1427 }
1428 
1430 {
1432  int offset = 2*s->mb_stride + 1;
1433  if(!ref)
1434  return AVERROR(ENOMEM);
1435  av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1436  ref->size -= offset;
1437  ref->data += offset;
1438  return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1439 }
1440 
1442  uint8_t *dest, uint8_t *src,
1443  int field_based, int field_select,
1444  int src_x, int src_y,
1445  int width, int height, ptrdiff_t stride,
1446  int h_edge_pos, int v_edge_pos,
1447  int w, int h, h264_chroma_mc_func *pix_op,
1448  int motion_x, int motion_y)
1449 {
1450  const int lowres = s->avctx->lowres;
1451  const int op_index = FFMIN(lowres, 3);
1452  const int s_mask = (2 << lowres) - 1;
1453  int emu = 0;
1454  int sx, sy;
1455 
1456  if (s->quarter_sample) {
1457  motion_x /= 2;
1458  motion_y /= 2;
1459  }
1460 
1461  sx = motion_x & s_mask;
1462  sy = motion_y & s_mask;
1463  src_x += motion_x >> lowres + 1;
1464  src_y += motion_y >> lowres + 1;
1465 
1466  src += src_y * stride + src_x;
1467 
1468  if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1469  (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1471  s->linesize, s->linesize,
1472  w + 1, (h + 1) << field_based,
1473  src_x, src_y << field_based,
1474  h_edge_pos, v_edge_pos);
1475  src = s->sc.edge_emu_buffer;
1476  emu = 1;
1477  }
1478 
1479  sx = (sx << 2) >> lowres;
1480  sy = (sy << 2) >> lowres;
1481  if (field_select)
1482  src += s->linesize;
1483  pix_op[op_index](dest, src, stride, h, sx, sy);
1484  return emu;
1485 }
1486 
1487 /* apply one mpeg motion vector to the three components */
1489  uint8_t *dest_y,
1490  uint8_t *dest_cb,
1491  uint8_t *dest_cr,
1492  int field_based,
1493  int bottom_field,
1494  int field_select,
1495  uint8_t **ref_picture,
1496  h264_chroma_mc_func *pix_op,
1497  int motion_x, int motion_y,
1498  int h, int mb_y)
1499 {
1500  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1501  int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1502  ptrdiff_t uvlinesize, linesize;
1503  const int lowres = s->avctx->lowres;
1504  const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1505  const int block_s = 8>>lowres;
1506  const int s_mask = (2 << lowres) - 1;
1507  const int h_edge_pos = s->h_edge_pos >> lowres;
1508  const int v_edge_pos = s->v_edge_pos >> lowres;
1509  linesize = s->current_picture.f->linesize[0] << field_based;
1510  uvlinesize = s->current_picture.f->linesize[1] << field_based;
1511 
1512  // FIXME obviously not perfect but qpel will not work in lowres anyway
1513  if (s->quarter_sample) {
1514  motion_x /= 2;
1515  motion_y /= 2;
1516  }
1517 
1518  if(field_based){
1519  motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1520  }
1521 
1522  sx = motion_x & s_mask;
1523  sy = motion_y & s_mask;
1524  src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1525  src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1526 
1527  if (s->out_format == FMT_H263) {
1528  uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1529  uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1530  uvsrc_x = src_x >> 1;
1531  uvsrc_y = src_y >> 1;
1532  } else if (s->out_format == FMT_H261) {
1533  // even chroma mv's are full pel in H261
1534  mx = motion_x / 4;
1535  my = motion_y / 4;
1536  uvsx = (2 * mx) & s_mask;
1537  uvsy = (2 * my) & s_mask;
1538  uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1539  uvsrc_y = mb_y * block_s + (my >> lowres);
1540  } else {
1541  if(s->chroma_y_shift){
1542  mx = motion_x / 2;
1543  my = motion_y / 2;
1544  uvsx = mx & s_mask;
1545  uvsy = my & s_mask;
1546  uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1547  uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1548  } else {
1549  if(s->chroma_x_shift){
1550  //Chroma422
1551  mx = motion_x / 2;
1552  uvsx = mx & s_mask;
1553  uvsy = motion_y & s_mask;
1554  uvsrc_y = src_y;
1555  uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1556  } else {
1557  //Chroma444
1558  uvsx = motion_x & s_mask;
1559  uvsy = motion_y & s_mask;
1560  uvsrc_x = src_x;
1561  uvsrc_y = src_y;
1562  }
1563  }
1564  }
1565 
1566  ptr_y = ref_picture[0] + src_y * linesize + src_x;
1567  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1568  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1569 
1570  if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1571  (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1572  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1573  linesize >> field_based, linesize >> field_based,
1574  17, 17 + field_based,
1575  src_x, src_y << field_based, h_edge_pos,
1576  v_edge_pos);
1577  ptr_y = s->sc.edge_emu_buffer;
1578  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1579  uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1580  uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1581  if (s->workaround_bugs & FF_BUG_IEDGE)
1582  vbuf -= s->uvlinesize;
1583  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1584  uvlinesize >> field_based, uvlinesize >> field_based,
1585  9, 9 + field_based,
1586  uvsrc_x, uvsrc_y << field_based,
1587  h_edge_pos >> 1, v_edge_pos >> 1);
1588  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1589  uvlinesize >> field_based,uvlinesize >> field_based,
1590  9, 9 + field_based,
1591  uvsrc_x, uvsrc_y << field_based,
1592  h_edge_pos >> 1, v_edge_pos >> 1);
1593  ptr_cb = ubuf;
1594  ptr_cr = vbuf;
1595  }
1596  }
1597 
1598  // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1599  if (bottom_field) {
1600  dest_y += s->linesize;
1601  dest_cb += s->uvlinesize;
1602  dest_cr += s->uvlinesize;
1603  }
1604 
1605  if (field_select) {
1606  ptr_y += s->linesize;
1607  ptr_cb += s->uvlinesize;
1608  ptr_cr += s->uvlinesize;
1609  }
1610 
1611  sx = (sx << 2) >> lowres;
1612  sy = (sy << 2) >> lowres;
1613  pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1614 
1615  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1616  int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1617  uvsx = (uvsx << 2) >> lowres;
1618  uvsy = (uvsy << 2) >> lowres;
1619  if (hc) {
1620  pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1621  pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1622  }
1623  }
1624  // FIXME h261 lowres loop filter
1625 }
1626 
1628  uint8_t *dest_cb, uint8_t *dest_cr,
1629  uint8_t **ref_picture,
1630  h264_chroma_mc_func * pix_op,
1631  int mx, int my)
1632 {
1633  const int lowres = s->avctx->lowres;
1634  const int op_index = FFMIN(lowres, 3);
1635  const int block_s = 8 >> lowres;
1636  const int s_mask = (2 << lowres) - 1;
1637  const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1638  const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1639  int emu = 0, src_x, src_y, sx, sy;
1640  ptrdiff_t offset;
1641  uint8_t *ptr;
1642 
1643  if (s->quarter_sample) {
1644  mx /= 2;
1645  my /= 2;
1646  }
1647 
1648  /* In case of 8X8, we construct a single chroma motion vector
1649  with a special rounding */
1650  mx = ff_h263_round_chroma(mx);
1651  my = ff_h263_round_chroma(my);
1652 
1653  sx = mx & s_mask;
1654  sy = my & s_mask;
1655  src_x = s->mb_x * block_s + (mx >> lowres + 1);
1656  src_y = s->mb_y * block_s + (my >> lowres + 1);
1657 
1658  offset = src_y * s->uvlinesize + src_x;
1659  ptr = ref_picture[1] + offset;
1660  if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1661  (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1663  s->uvlinesize, s->uvlinesize,
1664  9, 9,
1665  src_x, src_y, h_edge_pos, v_edge_pos);
1666  ptr = s->sc.edge_emu_buffer;
1667  emu = 1;
1668  }
1669  sx = (sx << 2) >> lowres;
1670  sy = (sy << 2) >> lowres;
1671  pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1672 
1673  ptr = ref_picture[2] + offset;
1674  if (emu) {
1676  s->uvlinesize, s->uvlinesize,
1677  9, 9,
1678  src_x, src_y, h_edge_pos, v_edge_pos);
1679  ptr = s->sc.edge_emu_buffer;
1680  }
1681  pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1682 }
1683 
1684 /**
1685  * motion compensation of a single macroblock
1686  * @param s context
1687  * @param dest_y luma destination pointer
1688  * @param dest_cb chroma cb/u destination pointer
1689  * @param dest_cr chroma cr/v destination pointer
1690  * @param dir direction (0->forward, 1->backward)
1691  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1692  * @param pix_op halfpel motion compensation function (average or put normally)
1693  * the motion vectors are taken from s->mv and the MV type from s->mv_type
1694  */
1695 static inline void MPV_motion_lowres(MpegEncContext *s,
1696  uint8_t *dest_y, uint8_t *dest_cb,
1697  uint8_t *dest_cr,
1698  int dir, uint8_t **ref_picture,
1699  h264_chroma_mc_func *pix_op)
1700 {
1701  int mx, my;
1702  int mb_x, mb_y, i;
1703  const int lowres = s->avctx->lowres;
1704  const int block_s = 8 >>lowres;
1705 
1706  mb_x = s->mb_x;
1707  mb_y = s->mb_y;
1708 
1709  switch (s->mv_type) {
1710  case MV_TYPE_16X16:
1711  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1712  0, 0, 0,
1713  ref_picture, pix_op,
1714  s->mv[dir][0][0], s->mv[dir][0][1],
1715  2 * block_s, mb_y);
1716  break;
1717  case MV_TYPE_8X8:
1718  mx = 0;
1719  my = 0;
1720  for (i = 0; i < 4; i++) {
1721  hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1722  s->linesize) * block_s,
1723  ref_picture[0], 0, 0,
1724  (2 * mb_x + (i & 1)) * block_s,
1725  (2 * mb_y + (i >> 1)) * block_s,
1726  s->width, s->height, s->linesize,
1727  s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1728  block_s, block_s, pix_op,
1729  s->mv[dir][i][0], s->mv[dir][i][1]);
1730 
1731  mx += s->mv[dir][i][0];
1732  my += s->mv[dir][i][1];
1733  }
1734 
1735  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1736  chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1737  pix_op, mx, my);
1738  break;
1739  case MV_TYPE_FIELD:
1740  if (s->picture_structure == PICT_FRAME) {
1741  /* top field */
1742  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1743  1, 0, s->field_select[dir][0],
1744  ref_picture, pix_op,
1745  s->mv[dir][0][0], s->mv[dir][0][1],
1746  block_s, mb_y);
1747  /* bottom field */
1748  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1749  1, 1, s->field_select[dir][1],
1750  ref_picture, pix_op,
1751  s->mv[dir][1][0], s->mv[dir][1][1],
1752  block_s, mb_y);
1753  } else {
1754  if (s->picture_structure != s->field_select[dir][0] + 1 &&
1755  s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1756  ref_picture = s->current_picture_ptr->f->data;
1757 
1758  }
1759  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1760  0, 0, s->field_select[dir][0],
1761  ref_picture, pix_op,
1762  s->mv[dir][0][0],
1763  s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1764  }
1765  break;
1766  case MV_TYPE_16X8:
1767  for (i = 0; i < 2; i++) {
1768  uint8_t **ref2picture;
1769 
1770  if (s->picture_structure == s->field_select[dir][i] + 1 ||
1771  s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1772  ref2picture = ref_picture;
1773  } else {
1774  ref2picture = s->current_picture_ptr->f->data;
1775  }
1776 
1777  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1778  0, 0, s->field_select[dir][i],
1779  ref2picture, pix_op,
1780  s->mv[dir][i][0], s->mv[dir][i][1] +
1781  2 * block_s * i, block_s, mb_y >> 1);
1782 
1783  dest_y += 2 * block_s * s->linesize;
1784  dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1785  dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1786  }
1787  break;
1788  case MV_TYPE_DMV:
1789  if (s->picture_structure == PICT_FRAME) {
1790  for (i = 0; i < 2; i++) {
1791  int j;
1792  for (j = 0; j < 2; j++) {
1793  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1794  1, j, j ^ i,
1795  ref_picture, pix_op,
1796  s->mv[dir][2 * i + j][0],
1797  s->mv[dir][2 * i + j][1],
1798  block_s, mb_y);
1799  }
1801  }
1802  } else {
1803  for (i = 0; i < 2; i++) {
1804  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1805  0, 0, s->picture_structure != i + 1,
1806  ref_picture, pix_op,
1807  s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1808  2 * block_s, mb_y >> 1);
1809 
1810  // after put we make avg of the same block
1812 
1813  // opposite parity is always in the same
1814  // frame if this is second field
1815  if (!s->first_field) {
1816  ref_picture = s->current_picture_ptr->f->data;
1817  }
1818  }
1819  }
1820  break;
1821  default:
1822  av_assert2(0);
1823  }
1824 }
1825 
1826 /**
1827  * find the lowest MB row referenced in the MVs
1828  */
1830 {
1831  int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1832  int my, off, i, mvs;
1833 
1834  if (s->picture_structure != PICT_FRAME || s->mcsel)
1835  goto unhandled;
1836 
1837  switch (s->mv_type) {
1838  case MV_TYPE_16X16:
1839  mvs = 1;
1840  break;
1841  case MV_TYPE_16X8:
1842  mvs = 2;
1843  break;
1844  case MV_TYPE_8X8:
1845  mvs = 4;
1846  break;
1847  default:
1848  goto unhandled;
1849  }
1850 
1851  for (i = 0; i < mvs; i++) {
1852  my = s->mv[dir][i][1];
1853  my_max = FFMAX(my_max, my);
1854  my_min = FFMIN(my_min, my);
1855  }
1856 
1857  off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1858 
1859  return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1860 unhandled:
1861  return s->mb_height-1;
1862 }
1863 
1864 /* put block[] to dest[] */
1865 static inline void put_dct(MpegEncContext *s,
1866  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1867 {
1868  s->dct_unquantize_intra(s, block, i, qscale);
1869  s->idsp.idct_put(dest, line_size, block);
1870 }
1871 
1872 /* add block[] to dest[] */
1873 static inline void add_dct(MpegEncContext *s,
1874  int16_t *block, int i, uint8_t *dest, int line_size)
1875 {
1876  if (s->block_last_index[i] >= 0) {
1877  s->idsp.idct_add(dest, line_size, block);
1878  }
1879 }
1880 
1881 static inline void add_dequant_dct(MpegEncContext *s,
1882  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1883 {
1884  if (s->block_last_index[i] >= 0) {
1885  s->dct_unquantize_inter(s, block, i, qscale);
1886 
1887  s->idsp.idct_add(dest, line_size, block);
1888  }
1889 }
1890 
1891 /**
1892  * Clean dc, ac, coded_block for the current non-intra MB.
1893  */
1895 {
1896  int wrap = s->b8_stride;
1897  int xy = s->block_index[0];
1898 
1899  s->dc_val[0][xy ] =
1900  s->dc_val[0][xy + 1 ] =
1901  s->dc_val[0][xy + wrap] =
1902  s->dc_val[0][xy + 1 + wrap] = 1024;
1903  /* ac pred */
1904  memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1905  memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1906  if (s->msmpeg4_version>=3) {
1907  s->coded_block[xy ] =
1908  s->coded_block[xy + 1 ] =
1909  s->coded_block[xy + wrap] =
1910  s->coded_block[xy + 1 + wrap] = 0;
1911  }
1912  /* chroma */
1913  wrap = s->mb_stride;
1914  xy = s->mb_x + s->mb_y * wrap;
1915  s->dc_val[1][xy] =
1916  s->dc_val[2][xy] = 1024;
1917  /* ac pred */
1918  memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1919  memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1920 
1921  s->mbintra_table[xy]= 0;
1922 }
1923 
1924 /* generic function called after a macroblock has been parsed by the
1925  decoder or after it has been encoded by the encoder.
1926 
1927  Important variables used:
1928  s->mb_intra : true if intra macroblock
1929  s->mv_dir : motion vector direction
1930  s->mv_type : motion vector type
1931  s->mv : motion vector
1932  s->interlaced_dct : true if interlaced dct used (mpeg2)
1933  */
1934 static av_always_inline
1936  int lowres_flag, int is_mpeg12)
1937 {
1938  const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1939 
1940  if (CONFIG_XVMC &&
1941  s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1942  s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1943  return;
1944  }
1945 
1946  if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1947  /* print DCT coefficients */
1948  int i,j;
1949  av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1950  for(i=0; i<6; i++){
1951  for(j=0; j<64; j++){
1952  av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1953  block[i][s->idsp.idct_permutation[j]]);
1954  }
1955  av_log(s->avctx, AV_LOG_DEBUG, "\n");
1956  }
1957  }
1958 
1959  s->current_picture.qscale_table[mb_xy] = s->qscale;
1960 
1961  /* update DC predictors for P macroblocks */
1962  if (!s->mb_intra) {
1963  if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1964  if(s->mbintra_table[mb_xy])
1966  } else {
1967  s->last_dc[0] =
1968  s->last_dc[1] =
1969  s->last_dc[2] = 128 << s->intra_dc_precision;
1970  }
1971  }
1972  else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1973  s->mbintra_table[mb_xy]=1;
1974 
1976  !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1977  s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1978  uint8_t *dest_y, *dest_cb, *dest_cr;
1979  int dct_linesize, dct_offset;
1980  op_pixels_func (*op_pix)[4];
1981  qpel_mc_func (*op_qpix)[16];
1982  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
1983  const int uvlinesize = s->current_picture.f->linesize[1];
1984  const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
1985  const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
1986 
1987  /* avoid copy if macroblock skipped in last frame too */
1988  /* skip only during decoding as we might trash the buffers during encoding a bit */
1989  if(!s->encoding){
1990  uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
1991 
1992  if (s->mb_skipped) {
1993  s->mb_skipped= 0;
1995  *mbskip_ptr = 1;
1996  } else if(!s->current_picture.reference) {
1997  *mbskip_ptr = 1;
1998  } else{
1999  *mbskip_ptr = 0; /* not skipped */
2000  }
2001  }
2002 
2003  dct_linesize = linesize << s->interlaced_dct;
2004  dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2005 
2006  if(readable){
2007  dest_y= s->dest[0];
2008  dest_cb= s->dest[1];
2009  dest_cr= s->dest[2];
2010  }else{
2011  dest_y = s->sc.b_scratchpad;
2012  dest_cb= s->sc.b_scratchpad+16*linesize;
2013  dest_cr= s->sc.b_scratchpad+32*linesize;
2014  }
2015 
2016  if (!s->mb_intra) {
2017  /* motion handling */
2018  /* decoding or more than one mb_type (MC was already done otherwise) */
2019  if(!s->encoding){
2020 
2021  if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2022  if (s->mv_dir & MV_DIR_FORWARD) {
2024  lowest_referenced_row(s, 0),
2025  0);
2026  }
2027  if (s->mv_dir & MV_DIR_BACKWARD) {
2029  lowest_referenced_row(s, 1),
2030  0);
2031  }
2032  }
2033 
2034  if(lowres_flag){
2036 
2037  if (s->mv_dir & MV_DIR_FORWARD) {
2038  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2040  }
2041  if (s->mv_dir & MV_DIR_BACKWARD) {
2042  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2043  }
2044  }else{
2045  op_qpix = s->me.qpel_put;
2046  if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2047  op_pix = s->hdsp.put_pixels_tab;
2048  }else{
2049  op_pix = s->hdsp.put_no_rnd_pixels_tab;
2050  }
2051  if (s->mv_dir & MV_DIR_FORWARD) {
2052  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2053  op_pix = s->hdsp.avg_pixels_tab;
2054  op_qpix= s->me.qpel_avg;
2055  }
2056  if (s->mv_dir & MV_DIR_BACKWARD) {
2057  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2058  }
2059  }
2060  }
2061 
2062  /* skip dequant / idct if we are really late ;) */
2063  if(s->avctx->skip_idct){
2066  || s->avctx->skip_idct >= AVDISCARD_ALL)
2067  goto skip_idct;
2068  }
2069 
2070  /* add dct residue */
2072  || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2073  add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2074  add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2075  add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2076  add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2077 
2078  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2079  if (s->chroma_y_shift){
2080  add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2081  add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2082  }else{
2083  dct_linesize >>= 1;
2084  dct_offset >>=1;
2085  add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2086  add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2087  add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2088  add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2089  }
2090  }
2091  } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2092  add_dct(s, block[0], 0, dest_y , dct_linesize);
2093  add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2094  add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2095  add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2096 
2097  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2098  if(s->chroma_y_shift){//Chroma420
2099  add_dct(s, block[4], 4, dest_cb, uvlinesize);
2100  add_dct(s, block[5], 5, dest_cr, uvlinesize);
2101  }else{
2102  //chroma422
2103  dct_linesize = uvlinesize << s->interlaced_dct;
2104  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2105 
2106  add_dct(s, block[4], 4, dest_cb, dct_linesize);
2107  add_dct(s, block[5], 5, dest_cr, dct_linesize);
2108  add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2109  add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2110  if(!s->chroma_x_shift){//Chroma444
2111  add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2112  add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2113  add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2114  add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2115  }
2116  }
2117  }//fi gray
2118  }
2119  else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2120  ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2121  }
2122  } else {
2123  /* dct only in intra block */
2125  put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2126  put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2127  put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2128  put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2129 
2130  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2131  if(s->chroma_y_shift){
2132  put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2133  put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2134  }else{
2135  dct_offset >>=1;
2136  dct_linesize >>=1;
2137  put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2138  put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2139  put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2140  put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2141  }
2142  }
2143  }else{
2144  s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2145  s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2146  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2147  s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2148 
2149  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2150  if(s->chroma_y_shift){
2151  s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2152  s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2153  }else{
2154 
2155  dct_linesize = uvlinesize << s->interlaced_dct;
2156  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2157 
2158  s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2159  s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2160  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2161  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2162  if(!s->chroma_x_shift){//Chroma444
2163  s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2164  s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2165  s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2166  s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2167  }
2168  }
2169  }//gray
2170  }
2171  }
2172 skip_idct:
2173  if(!readable){
2174  s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2175  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2176  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2177  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2178  }
2179  }
2180  }
2181 }
2182 
2184 {
2185 #if !CONFIG_SMALL
2186  if(s->out_format == FMT_MPEG1) {
2187  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2188  else mpv_reconstruct_mb_internal(s, block, 0, 1);
2189  } else
2190 #endif
2191  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2192  else mpv_reconstruct_mb_internal(s, block, 0, 0);
2193 }
2194 
2196 {
2199  s->first_field, s->low_delay);
2200 }
2201 
2202 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2203  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2204  const int uvlinesize = s->current_picture.f->linesize[1];
2205  const int mb_size= 4 - s->avctx->lowres;
2206 
2207  s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2208  s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2209  s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2210  s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2211  s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2212  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;
2213  //block_index is not used by mpeg2, so it is not affected by chroma_format
2214 
2215  s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << mb_size);
2216  s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift));
2217  s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift));
2218 
2220  {
2221  if(s->picture_structure==PICT_FRAME){
2222  s->dest[0] += s->mb_y * linesize << mb_size;
2223  s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2224  s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2225  }else{
2226  s->dest[0] += (s->mb_y>>1) * linesize << mb_size;
2227  s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2228  s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2230  }
2231  }
2232 }
2233 
2235  int i;
2236  MpegEncContext *s = avctx->priv_data;
2237 
2238  if (!s || !s->picture)
2239  return;
2240 
2241  for (i = 0; i < MAX_PICTURE_COUNT; i++)
2242  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2244 
2248 
2249  s->mb_x= s->mb_y= 0;
2250  s->closed_gop= 0;
2251 
2252  s->parse_context.state= -1;
2254  s->parse_context.overread= 0;
2256  s->parse_context.index= 0;
2257  s->parse_context.last_index= 0;
2258  s->bitstream_buffer_size=0;
2259  s->pp_time=0;
2260 }
2261 
2262 /**
2263  * set qscale and update qscale dependent variables.
2264  */
2265 void ff_set_qscale(MpegEncContext * s, int qscale)
2266 {
2267  if (qscale < 1)
2268  qscale = 1;
2269  else if (qscale > 31)
2270  qscale = 31;
2271 
2272  s->qscale = qscale;
2273  s->chroma_qscale= s->chroma_qscale_table[qscale];
2274 
2275  s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2277 }
2278 
2280 {
2283 }
int last_time_base
Definition: mpegvideo.h:383
int bitstream_buffer_size
Definition: mpegvideo.h:411
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:892
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
Definition: frame.c:54
IDCTDSPContext idsp
Definition: mpegvideo.h:227
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:356
int ff_thread_can_start_frame(AVCodecContext *avctx)
const struct AVCodec * codec
Definition: avcodec.h:1511
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:241
av_cold void ff_mpv_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:43
discard all frames except keyframes
Definition: avcodec.h:790
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2202
int picture_number
Definition: mpegvideo.h:124
const char * s
Definition: avisynth_c.h:768
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:90
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:517
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:245
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:150
#define MV_TYPE_FIELD
2 vectors, one per field
Definition: mpegvideo.h:266
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:185
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:1689
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:1935
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:1627
uint8_t * coded_block_base
Definition: mpegvideo.h:188
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:393
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:151
int16_t(*[3] ac_val)[16]
used for MPEG-4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:191
MJPEG encoder.
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:129
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:1170
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:433
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:410
enum AVCodecID codec_id
Definition: mpegvideo.h:109
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:1711
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:251
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:237
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:1829
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:791
uint8_t permutated[64]
Definition: idctdsp.h:33
static void free_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:408
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2725
int padding_bug_score
used to detect the VERY common padding bug in MPEG-4
Definition: mpegvideo.h:406
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
Definition: mpegpicture.c:359
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:130
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2658
#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:201
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:84
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:247
enum AVPictureType last_picture
Definition: movenc.c:68
int chroma_x_shift
Definition: mpegvideo.h:473
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:111
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:511
int field_select[2][2]
Definition: mpegvideo.h:274
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:515
int block_wrap[6]
Definition: mpegvideo.h:291
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:239
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
Definition: mpegvideo.c:428
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:1894
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:513
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:2195
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:546
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:34
int16_t * dc_val_base
Definition: mpegvideo.h:183
ScratchpadContext sc
Definition: mpegvideo.h:199
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:150
#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:101
int ff_mpv_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1037
int noise_reduction
Definition: mpegvideo.h:564
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:197
Multithreading support functions.
int frame_skip_threshold
Definition: mpegvideo.h:558
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
void ff_free_picture_tables(Picture *pic)
Definition: mpegpicture.c:458
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:281
int interlaced_dct
Definition: mpegvideo.h:478
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Definition: mpegpicture.c:444
int intra_dc_precision
Definition: mpegvideo.h:458
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:248
float * cplx_tab
Definition: mpegvideo.h:542
#define ff_dlog(a,...)
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3651
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:387
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Definition: mpegvideo.c:348
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
av_cold void ff_mpv_idct_init(MpegEncContext *s)
Definition: mpegvideo.c:330
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2733
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:117
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:858
high precision timer, useful to profile code
int16_t(*[2][2] p_field_mv_table_base)[2]
Definition: mpegvideo.h:243
#define FF_BUG_IEDGE
Definition: avcodec.h:2546
#define av_log(a,...)
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:2265
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:99
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:184
enum AVCodecID id
Definition: avcodec.h:3379
int h263_plus
H.263+ headers.
Definition: mpegvideo.h:106
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:153
unsigned int buffer_size
Definition: parser.h:32
int width
Definition: frame.h:259
#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:182
static void add_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size)
Definition: mpegvideo.c:1873
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:192
int chroma_y_shift
Definition: mpegvideo.h:474
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:400
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:163
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:2391
ERContext er
Definition: mpegvideo.h:548
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2772
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:216
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:509
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:503
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1582
#define wrap(func)
Definition: neontest.h:65
uint16_t width
Definition: gdv.c:47
static void put_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1865
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:396
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:288
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:401
uint8_t *[2][2] b_field_select_table
Definition: mpegvideo.h:254
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:1116
#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:113
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2234
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:123
int * lambda_table
Definition: mpegvideo.h:205
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:98
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:483
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:1736
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:1429
int progressive_frame
Definition: mpegvideo.h:476
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
#define UPDATE_PICTURE(pic)
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:883
int top_field_first
Definition: mpegvideo.h:460
#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:2764
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:357
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:171
int width
picture width / height.
Definition: avcodec.h:1674
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:193
int16_t(*[2] motion_val)[2]
Definition: mpegpicture.h:53
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:465
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:412
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:190
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:862
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:2765
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:244
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:238
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:493
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:83
MotionEstContext me
Definition: mpegvideo.h:279
int frame_skip_factor
Definition: mpegvideo.h:559
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:1989
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:195
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:483
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:657
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2753
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:290
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:294
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:479
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:274
#define MV_TYPE_16X16
1 vector for the whole mb
Definition: mpegvideo.h:263
static void clear_context(MpegEncContext *s)
Definition: mpegvideo.c:798
AVBufferRef * qscale_table_buf
Definition: mpegpicture.h:49
#define MV_DIR_BACKWARD
Definition: mpegvideo.h:260
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:240
int coded_picture_number
picture number in bitstream order
Definition: frame.h:315
uint16_t inter_matrix[64]
Definition: mpegvideo.h:299
uint8_t * buffer
Definition: parser.h:29
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:152
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
BlockDSPContext bdsp
Definition: mpegvideo.h:223
enum AVDiscard skip_idct
Skip IDCT/dequantization for selected frames.
Definition: avcodec.h:2940
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
int debug
debug
Definition: avcodec.h:2582
main external API structure.
Definition: avcodec.h:1502
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:229
ScanTable intra_scantable
Definition: mpegvideo.h:88
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:189
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1527
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:265
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1422
uint32_t state
contains the last few bytes in MSB order
Definition: parser.h:33
Picture * picture
main picture buffer
Definition: mpegvideo.h:133
int progressive_sequence
Definition: mpegvideo.h:451
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:1689
ScanTable intra_h_scantable
Definition: mpegvideo.h:89
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:252
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:196
int closed_gop
MPEG1/2 GOP is closed.
Definition: mpegvideo.h:208
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:2004
#define FF_DEBUG_DCT_COEFF
Definition: avcodec.h:2594
struct AVFrame * f
Definition: mpegpicture.h:46
#define FF_MB_DECISION_RD
rate distortion
Definition: avcodec.h:1992
int context_initialized
Definition: mpegvideo.h:121
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:132
#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:1190
int f_code
forward MV resolution
Definition: mpegvideo.h:235
#define COPY(a)
#define MV_DIR_FORWARD
Definition: mpegvideo.h:259
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:112
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
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:102
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:249
static int init_context_frame(MpegEncContext *s)
Initialize and allocates MpegEncContext fields dependent on the resolution.
Definition: mpegvideo.c:677
uint8_t *[2] p_field_select_table
Definition: mpegvideo.h:253
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode B-frame encoding.
Definition: mpegvideo.h:250
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:186
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:273
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode B-frame encoding.
Definition: mpegvideo.h:246
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
static void dct_unquantize_h263_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:209
MpegEncContext.
Definition: mpegvideo.h:78
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:180
int8_t * qscale_table
Definition: mpegpicture.h:50
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
Deallocate a picture.
Definition: mpegpicture.c:292
A reference to a data buffer.
Definition: buffer.h:81
discard all non reference
Definition: avcodec.h:787
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int
MpegVideoDSPContext mdsp
Definition: mpegvideo.h:229
int(* dct_error_sum)[64]
Definition: mpegvideo.h:329
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Definition: mpegvideo.c:662
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:292
#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:211
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:159
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:179
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:2531
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:187
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:455
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:505
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:770
static int lowres
Definition: ffplay.c:331
H264ChromaContext h264chroma
Definition: mpegvideo.h:225
int16_t(* blocks)[12][64]
Definition: mpegvideo.h:496
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:29
int slices
Number of slices.
Definition: avcodec.h:2148
void * priv_data
Definition: avcodec.h:1529
#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:877
int picture_structure
Definition: mpegvideo.h:455
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:233
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:353
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1414
#define MV_TYPE_DMV
2 vectors, special mpeg2 Dual Prime Vectors
Definition: mpegvideo.h:267
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2183
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:495
ParseContext parse_context
Definition: mpegvideo.h:359
static void add_dequant_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1881
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:165
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
#define FF_DEBUG_NOMC
Definition: avcodec.h:2607
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:1488
int chroma_qscale
chroma QP
Definition: mpegvideo.h:202
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:507
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:634
static void free_context_frame(MpegEncContext *s)
Frees and resets MpegEncContext fields depending on the resolution.
Definition: mpegvideo.c:988
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:1441
int height
Definition: frame.h:259
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:297
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegpicture.h:56
#define av_freep(p)
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:116
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:87
#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:264
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:242
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:236
float * bits_tab
Definition: mpegvideo.h:542
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:2279
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:1695
#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:226