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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 
390  FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail)
391 
392  if (s->avctx->codec_tag == AV_RL32("VCR2")) {
393  // exchange uv
394  FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
395  }
396 
397  if (s->out_format == FMT_H263) {
398  /* ac values */
400  yc_size * sizeof(int16_t) * 16, fail);
401  s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
402  s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
403  s->ac_val[2] = s->ac_val[1] + c_size;
404  }
405 
406  return 0;
407 fail:
408  return -1; // free() through ff_mpv_common_end()
409 }
410 
412 {
413  if (!s)
414  return;
415 
417  av_freep(&s->me.scratchpad);
418  s->me.temp =
419  s->sc.rd_scratchpad =
420  s->sc.b_scratchpad =
421  s->sc.obmc_scratchpad = NULL;
422 
423  av_freep(&s->dct_error_sum);
424  av_freep(&s->me.map);
425  av_freep(&s->me.score_map);
426  av_freep(&s->blocks);
427  av_freep(&s->block32);
428  av_freep(&s->ac_val_base);
429  s->block = NULL;
430 }
431 
433 {
434 #define COPY(a) bak->a = src->a
435  COPY(sc.edge_emu_buffer);
436  COPY(me.scratchpad);
437  COPY(me.temp);
438  COPY(sc.rd_scratchpad);
439  COPY(sc.b_scratchpad);
440  COPY(sc.obmc_scratchpad);
441  COPY(me.map);
442  COPY(me.score_map);
443  COPY(blocks);
444  COPY(block);
445  COPY(block32);
446  COPY(start_mb_y);
447  COPY(end_mb_y);
448  COPY(me.map_generation);
449  COPY(pb);
450  COPY(dct_error_sum);
451  COPY(dct_count[0]);
452  COPY(dct_count[1]);
453  COPY(ac_val_base);
454  COPY(ac_val[0]);
455  COPY(ac_val[1]);
456  COPY(ac_val[2]);
457 #undef COPY
458 }
459 
461 {
462  MpegEncContext bak;
463  int i, ret;
464  // FIXME copy only needed parts
465  // START_TIMER
466  backup_duplicate_context(&bak, dst);
467  memcpy(dst, src, sizeof(MpegEncContext));
468  backup_duplicate_context(dst, &bak);
469  for (i = 0; i < 12; i++) {
470  dst->pblocks[i] = &dst->block[i];
471  }
472  if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
473  // exchange uv
474  FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
475  }
476  if (!dst->sc.edge_emu_buffer &&
477  (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
478  &dst->sc, dst->linesize)) < 0) {
479  av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
480  "scratch buffers.\n");
481  return ret;
482  }
483  // STOP_TIMER("update_duplicate_context")
484  // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
485  return 0;
486 }
487 
489  const AVCodecContext *src)
490 {
491  int i, ret;
492  MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
493 
494  if (dst == src)
495  return 0;
496 
497  av_assert0(s != s1);
498 
499  // FIXME can parameters change on I-frames?
500  // in that case dst may need a reinit
501  if (!s->context_initialized) {
502  int err;
503  memcpy(s, s1, sizeof(MpegEncContext));
504 
505  s->avctx = dst;
506  s->bitstream_buffer = NULL;
508 
509  if (s1->context_initialized){
510 // s->picture_range_start += MAX_PICTURE_COUNT;
511 // s->picture_range_end += MAX_PICTURE_COUNT;
512  ff_mpv_idct_init(s);
513  if((err = ff_mpv_common_init(s)) < 0){
514  memset(s, 0, sizeof(MpegEncContext));
515  s->avctx = dst;
516  return err;
517  }
518  }
519  }
520 
521  if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
522  s->context_reinit = 0;
523  s->height = s1->height;
524  s->width = s1->width;
525  if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
526  return ret;
527  }
528 
529  s->avctx->coded_height = s1->avctx->coded_height;
530  s->avctx->coded_width = s1->avctx->coded_width;
531  s->avctx->width = s1->avctx->width;
532  s->avctx->height = s1->avctx->height;
533 
534  s->coded_picture_number = s1->coded_picture_number;
535  s->picture_number = s1->picture_number;
536 
537  av_assert0(!s->picture || s->picture != s1->picture);
538  if(s->picture)
539  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
540  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
541  if (s1->picture && s1->picture[i].f->buf[0] &&
542  (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
543  return ret;
544  }
545 
546 #define UPDATE_PICTURE(pic)\
547 do {\
548  ff_mpeg_unref_picture(s->avctx, &s->pic);\
549  if (s1->pic.f && s1->pic.f->buf[0])\
550  ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
551  else\
552  ret = ff_update_picture_tables(&s->pic, &s1->pic);\
553  if (ret < 0)\
554  return ret;\
555 } while (0)
556 
557  UPDATE_PICTURE(current_picture);
559  UPDATE_PICTURE(next_picture);
560 
561 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
562  ((pic && pic >= old_ctx->picture && \
563  pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
564  &new_ctx->picture[pic - old_ctx->picture] : NULL)
565 
566  s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
567  s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
568  s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
569 
570  // Error/bug resilience
571  s->next_p_frame_damaged = s1->next_p_frame_damaged;
572  s->workaround_bugs = s1->workaround_bugs;
573  s->padding_bug_score = s1->padding_bug_score;
574 
575  // MPEG-4 timing info
576  memcpy(&s->last_time_base, &s1->last_time_base,
577  (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
578  (char *) &s1->last_time_base);
579 
580  // B-frame info
581  s->max_b_frames = s1->max_b_frames;
582  s->low_delay = s1->low_delay;
583  s->droppable = s1->droppable;
584 
585  // DivX handling (doesn't work)
586  s->divx_packed = s1->divx_packed;
587 
588  if (s1->bitstream_buffer) {
589  if (s1->bitstream_buffer_size +
593  s1->allocated_bitstream_buffer_size);
594  if (!s->bitstream_buffer) {
595  s->bitstream_buffer_size = 0;
596  return AVERROR(ENOMEM);
597  }
598  }
599  s->bitstream_buffer_size = s1->bitstream_buffer_size;
600  memcpy(s->bitstream_buffer, s1->bitstream_buffer,
601  s1->bitstream_buffer_size);
602  memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
604  }
605 
606  // linesize-dependent scratch buffer allocation
607  if (!s->sc.edge_emu_buffer)
608  if (s1->linesize) {
609  if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
610  &s->sc, s1->linesize) < 0) {
611  av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
612  "scratch buffers.\n");
613  return AVERROR(ENOMEM);
614  }
615  } else {
616  av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
617  "be allocated due to unknown size.\n");
618  }
619 
620  // MPEG-2/interlacing info
621  memcpy(&s->progressive_sequence, &s1->progressive_sequence,
622  (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
623 
624  if (!s1->first_field) {
625  s->last_pict_type = s1->pict_type;
626  if (s1->current_picture_ptr)
627  s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
628  }
629 
630  return 0;
631 }
632 
633 /**
634  * Set the given MpegEncContext to common defaults
635  * (same for encoding and decoding).
636  * The changed fields will not depend upon the
637  * prior state of the MpegEncContext.
638  */
640 {
641  s->y_dc_scale_table =
644  s->progressive_frame = 1;
645  s->progressive_sequence = 1;
647 
648  s->coded_picture_number = 0;
649  s->picture_number = 0;
650 
651  s->f_code = 1;
652  s->b_code = 1;
653 
654  s->slice_context_count = 1;
655 }
656 
657 /**
658  * Set the given MpegEncContext to defaults for decoding.
659  * the changed fields will not depend upon
660  * the prior state of the MpegEncContext.
661  */
663 {
665 }
666 
668 {
669  s->avctx = avctx;
670  s->width = avctx->coded_width;
671  s->height = avctx->coded_height;
672  s->codec_id = avctx->codec->id;
673  s->workaround_bugs = avctx->workaround_bugs;
674 
675  /* convert fourcc to upper case */
676  s->codec_tag = avpriv_toupper4(avctx->codec_tag);
677 }
678 
679 /**
680  * Initialize and allocates MpegEncContext fields dependent on the resolution.
681  */
683 {
684  int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
685 
686  s->mb_width = (s->width + 15) / 16;
687  s->mb_stride = s->mb_width + 1;
688  s->b8_stride = s->mb_width * 2 + 1;
689  mb_array_size = s->mb_height * s->mb_stride;
690  mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
691 
692  /* set default edge pos, will be overridden
693  * in decode_header if needed */
694  s->h_edge_pos = s->mb_width * 16;
695  s->v_edge_pos = s->mb_height * 16;
696 
697  s->mb_num = s->mb_width * s->mb_height;
698 
699  s->block_wrap[0] =
700  s->block_wrap[1] =
701  s->block_wrap[2] =
702  s->block_wrap[3] = s->b8_stride;
703  s->block_wrap[4] =
704  s->block_wrap[5] = s->mb_stride;
705 
706  y_size = s->b8_stride * (2 * s->mb_height + 1);
707  c_size = s->mb_stride * (s->mb_height + 1);
708  yc_size = y_size + 2 * c_size;
709 
710  if (s->mb_height & 1)
711  yc_size += 2*s->b8_stride + 2*s->mb_stride;
712 
713  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
714  fail); // error resilience code looks cleaner with this
715  for (y = 0; y < s->mb_height; y++)
716  for (x = 0; x < s->mb_width; x++)
717  s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
718 
719  s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
720 
721  if (s->encoding) {
722  /* Allocate MV tables */
723  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
724  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
725  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
726  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
727  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
728  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
729  s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
735 
736  /* Allocate MB type table */
737  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
738 
739  FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
740 
742  mb_array_size * sizeof(float), fail);
744  mb_array_size * sizeof(float), fail);
745 
746  }
747 
748  if (s->codec_id == AV_CODEC_ID_MPEG4 ||
750  /* interlaced direct mode decoding tables */
751  for (i = 0; i < 2; i++) {
752  int j, k;
753  for (j = 0; j < 2; j++) {
754  for (k = 0; k < 2; k++) {
756  s->b_field_mv_table_base[i][j][k],
757  mv_table_size * 2 * sizeof(int16_t),
758  fail);
759  s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
760  s->mb_stride + 1;
761  }
762  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
763  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
764  s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
765  }
766  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
767  }
768  }
769  if (s->out_format == FMT_H263) {
770  /* cbp values */
771  FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
772  s->coded_block = s->coded_block_base + s->b8_stride + 1;
773 
774  /* cbp, ac_pred, pred_dir */
775  FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
776  FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
777  }
778 
779  if (s->h263_pred || s->h263_plus || !s->encoding) {
780  /* dc values */
781  // MN: we need these for error resilience of intra-frames
782  FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
783  s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
784  s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
785  s->dc_val[2] = s->dc_val[1] + c_size;
786  for (i = 0; i < yc_size; i++)
787  s->dc_val_base[i] = 1024;
788  }
789 
790  /* which mb is an intra block */
791  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
792  memset(s->mbintra_table, 1, mb_array_size);
793 
794  /* init macroblock skip table */
795  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
796  // Note the + 1 is for a quicker MPEG-4 slice_end detection
797 
798  return ff_mpeg_er_init(s);
799 fail:
800  return AVERROR(ENOMEM);
801 }
802 
804 {
805  int i, j, k;
806 
807  memset(&s->next_picture, 0, sizeof(s->next_picture));
808  memset(&s->last_picture, 0, sizeof(s->last_picture));
809  memset(&s->current_picture, 0, sizeof(s->current_picture));
810  memset(&s->new_picture, 0, sizeof(s->new_picture));
811 
812  memset(s->thread_context, 0, sizeof(s->thread_context));
813 
814  s->me.map = NULL;
815  s->me.score_map = NULL;
816  s->dct_error_sum = NULL;
817  s->block = NULL;
818  s->blocks = NULL;
819  s->block32 = NULL;
820  memset(s->pblocks, 0, sizeof(s->pblocks));
821  s->ac_val_base = NULL;
822  s->ac_val[0] =
823  s->ac_val[1] =
824  s->ac_val[2] =NULL;
825  s->sc.edge_emu_buffer = NULL;
826  s->me.scratchpad = NULL;
827  s->me.temp =
828  s->sc.rd_scratchpad =
829  s->sc.b_scratchpad =
830  s->sc.obmc_scratchpad = NULL;
831 
832 
833  s->bitstream_buffer = NULL;
835  s->picture = NULL;
836  s->mb_type = NULL;
837  s->p_mv_table_base = NULL;
843  s->p_mv_table = NULL;
844  s->b_forw_mv_table = NULL;
845  s->b_back_mv_table = NULL;
848  s->b_direct_mv_table = NULL;
849  for (i = 0; i < 2; i++) {
850  for (j = 0; j < 2; j++) {
851  for (k = 0; k < 2; k++) {
852  s->b_field_mv_table_base[i][j][k] = NULL;
853  s->b_field_mv_table[i][j][k] = NULL;
854  }
855  s->b_field_select_table[i][j] = NULL;
856  s->p_field_mv_table_base[i][j] = NULL;
857  s->p_field_mv_table[i][j] = NULL;
858  }
859  s->p_field_select_table[i] = NULL;
860  }
861 
862  s->dc_val_base = NULL;
863  s->coded_block_base = NULL;
864  s->mbintra_table = NULL;
865  s->cbp_table = NULL;
866  s->pred_dir_table = NULL;
867 
868  s->mbskip_table = NULL;
869 
871  s->er.er_temp_buffer = NULL;
872  s->mb_index2xy = NULL;
873  s->lambda_table = NULL;
874 
875  s->cplx_tab = NULL;
876  s->bits_tab = NULL;
877 }
878 
879 /**
880  * init common structure for both encoder and decoder.
881  * this assumes that some variables like width/height are already set
882  */
884 {
885  int i, ret;
886  int nb_slices = (HAVE_THREADS &&
888  s->avctx->thread_count : 1;
889 
890  clear_context(s);
891 
892  if (s->encoding && s->avctx->slices)
893  nb_slices = s->avctx->slices;
894 
896  s->mb_height = (s->height + 31) / 32 * 2;
897  else
898  s->mb_height = (s->height + 15) / 16;
899 
900  if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
902  "decoding to AV_PIX_FMT_NONE is not supported.\n");
903  return -1;
904  }
905 
906  if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
907  int max_slices;
908  if (s->mb_height)
909  max_slices = FFMIN(MAX_THREADS, s->mb_height);
910  else
911  max_slices = MAX_THREADS;
912  av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
913  " reducing to %d\n", nb_slices, max_slices);
914  nb_slices = max_slices;
915  }
916 
917  if ((s->width || s->height) &&
918  av_image_check_size(s->width, s->height, 0, s->avctx))
919  return -1;
920 
921  dct_init(s);
922 
923  /* set chroma shifts */
925  &s->chroma_x_shift,
926  &s->chroma_y_shift);
927  if (ret)
928  return ret;
929 
931  MAX_PICTURE_COUNT * sizeof(Picture), fail);
932  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
933  s->picture[i].f = av_frame_alloc();
934  if (!s->picture[i].f)
935  goto fail;
936  }
938  if (!s->next_picture.f)
939  goto fail;
941  if (!s->last_picture.f)
942  goto fail;
944  if (!s->current_picture.f)
945  goto fail;
947  if (!s->new_picture.f)
948  goto fail;
949 
950  if (init_context_frame(s))
951  goto fail;
952 
953  s->parse_context.state = -1;
954 
955  s->context_initialized = 1;
956  memset(s->thread_context, 0, sizeof(s->thread_context));
957  s->thread_context[0] = s;
958 
959 // if (s->width && s->height) {
960  if (nb_slices > 1) {
961  for (i = 0; i < nb_slices; i++) {
962  if (i) {
963  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
964  if (!s->thread_context[i])
965  goto fail;
966  }
967  if (init_duplicate_context(s->thread_context[i]) < 0)
968  goto fail;
969  s->thread_context[i]->start_mb_y =
970  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
971  s->thread_context[i]->end_mb_y =
972  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
973  }
974  } else {
975  if (init_duplicate_context(s) < 0)
976  goto fail;
977  s->start_mb_y = 0;
978  s->end_mb_y = s->mb_height;
979  }
980  s->slice_context_count = nb_slices;
981 // }
982 
983  return 0;
984  fail:
986  return -1;
987 }
988 
989 /**
990  * Frees and resets MpegEncContext fields depending on the resolution.
991  * Is used during resolution changes to avoid a full reinitialization of the
992  * codec.
993  */
995 {
996  int i, j, k;
997 
998  av_freep(&s->mb_type);
1005  s->p_mv_table = NULL;
1006  s->b_forw_mv_table = NULL;
1007  s->b_back_mv_table = NULL;
1010  s->b_direct_mv_table = NULL;
1011  for (i = 0; i < 2; i++) {
1012  for (j = 0; j < 2; j++) {
1013  for (k = 0; k < 2; k++) {
1014  av_freep(&s->b_field_mv_table_base[i][j][k]);
1015  s->b_field_mv_table[i][j][k] = NULL;
1016  }
1017  av_freep(&s->b_field_select_table[i][j]);
1018  av_freep(&s->p_field_mv_table_base[i][j]);
1019  s->p_field_mv_table[i][j] = NULL;
1020  }
1022  }
1023 
1024  av_freep(&s->dc_val_base);
1026  av_freep(&s->mbintra_table);
1027  av_freep(&s->cbp_table);
1028  av_freep(&s->pred_dir_table);
1029 
1030  av_freep(&s->mbskip_table);
1031 
1033  av_freep(&s->er.er_temp_buffer);
1034  av_freep(&s->mb_index2xy);
1035  av_freep(&s->lambda_table);
1036 
1037  av_freep(&s->cplx_tab);
1038  av_freep(&s->bits_tab);
1039 
1040  s->linesize = s->uvlinesize = 0;
1041 }
1042 
1044 {
1045  int i, err = 0;
1046 
1047  if (!s->context_initialized)
1048  return AVERROR(EINVAL);
1049 
1050  if (s->slice_context_count > 1) {
1051  for (i = 0; i < s->slice_context_count; i++) {
1053  }
1054  for (i = 1; i < s->slice_context_count; i++) {
1055  av_freep(&s->thread_context[i]);
1056  }
1057  } else
1059 
1060  free_context_frame(s);
1061 
1062  if (s->picture)
1063  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1064  s->picture[i].needs_realloc = 1;
1065  }
1066 
1067  s->last_picture_ptr =
1068  s->next_picture_ptr =
1070 
1071  // init
1073  s->mb_height = (s->height + 31) / 32 * 2;
1074  else
1075  s->mb_height = (s->height + 15) / 16;
1076 
1077  if ((s->width || s->height) &&
1078  (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1079  goto fail;
1080 
1081  if ((err = init_context_frame(s)))
1082  goto fail;
1083 
1084  memset(s->thread_context, 0, sizeof(s->thread_context));
1085  s->thread_context[0] = s;
1086 
1087  if (s->width && s->height) {
1088  int nb_slices = s->slice_context_count;
1089  if (nb_slices > 1) {
1090  for (i = 0; i < nb_slices; i++) {
1091  if (i) {
1092  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1093  if (!s->thread_context[i]) {
1094  err = AVERROR(ENOMEM);
1095  goto fail;
1096  }
1097  }
1098  if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1099  goto fail;
1100  s->thread_context[i]->start_mb_y =
1101  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1102  s->thread_context[i]->end_mb_y =
1103  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1104  }
1105  } else {
1106  err = init_duplicate_context(s);
1107  if (err < 0)
1108  goto fail;
1109  s->start_mb_y = 0;
1110  s->end_mb_y = s->mb_height;
1111  }
1112  s->slice_context_count = nb_slices;
1113  }
1114 
1115  return 0;
1116  fail:
1117  ff_mpv_common_end(s);
1118  return err;
1119 }
1120 
1121 /* init common structure for both encoder and decoder */
1123 {
1124  int i;
1125 
1126  if (!s)
1127  return ;
1128 
1129  if (s->slice_context_count > 1) {
1130  for (i = 0; i < s->slice_context_count; i++) {
1132  }
1133  for (i = 1; i < s->slice_context_count; i++) {
1134  av_freep(&s->thread_context[i]);
1135  }
1136  s->slice_context_count = 1;
1137  } else free_duplicate_context(s);
1138 
1140  s->parse_context.buffer_size = 0;
1141 
1144 
1145  if (s->picture) {
1146  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1148  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1149  av_frame_free(&s->picture[i].f);
1150  }
1151  }
1152  av_freep(&s->picture);
1165 
1166  free_context_frame(s);
1167 
1168  s->context_initialized = 0;
1169  s->last_picture_ptr =
1170  s->next_picture_ptr =
1172  s->linesize = s->uvlinesize = 0;
1173 }
1174 
1175 
1176 static void gray_frame(AVFrame *frame)
1177 {
1178  int i, h_chroma_shift, v_chroma_shift;
1179 
1180  av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1181 
1182  for(i=0; i<frame->height; i++)
1183  memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1184  for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1185  memset(frame->data[1] + frame->linesize[1]*i,
1186  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1187  memset(frame->data[2] + frame->linesize[2]*i,
1188  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1189  }
1190 }
1191 
1192 /**
1193  * generic function called after decoding
1194  * the header and before a frame is decoded.
1195  */
1197 {
1198  int i, ret;
1199  Picture *pic;
1200  s->mb_skipped = 0;
1201 
1202  if (!ff_thread_can_start_frame(avctx)) {
1203  av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1204  return -1;
1205  }
1206 
1207  /* mark & release old frames */
1208  if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1210  s->last_picture_ptr->f->buf[0]) {
1212  }
1213 
1214  /* release forgotten pictures */
1215  /* if (MPEG-124 / H.263) */
1216  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1217  if (&s->picture[i] != s->last_picture_ptr &&
1218  &s->picture[i] != s->next_picture_ptr &&
1219  s->picture[i].reference && !s->picture[i].needs_realloc) {
1220  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1221  }
1222  }
1223 
1227 
1228  /* release non reference frames */
1229  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1230  if (!s->picture[i].reference)
1231  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1232  }
1233 
1234  if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1235  // we already have an unused image
1236  // (maybe it was set before reading the header)
1237  pic = s->current_picture_ptr;
1238  } else {
1239  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1240  if (i < 0) {
1241  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1242  return i;
1243  }
1244  pic = &s->picture[i];
1245  }
1246 
1247  pic->reference = 0;
1248  if (!s->droppable) {
1249  if (s->pict_type != AV_PICTURE_TYPE_B)
1250  pic->reference = 3;
1251  }
1252 
1254 
1255  if (alloc_picture(s, pic, 0) < 0)
1256  return -1;
1257 
1258  s->current_picture_ptr = pic;
1259  // FIXME use only the vars from current_pic
1261  if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1263  if (s->picture_structure != PICT_FRAME)
1266  }
1270 
1272  // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1273  // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1275 
1276  if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1277  s->current_picture_ptr)) < 0)
1278  return ret;
1279 
1280  if (s->pict_type != AV_PICTURE_TYPE_B) {
1282  if (!s->droppable)
1284  }
1285  ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1287  s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1288  s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1290  s->pict_type, s->droppable);
1291 
1292  if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1293  (s->pict_type != AV_PICTURE_TYPE_I)) {
1294  int h_chroma_shift, v_chroma_shift;
1296  &h_chroma_shift, &v_chroma_shift);
1298  av_log(avctx, AV_LOG_DEBUG,
1299  "allocating dummy last picture for B frame\n");
1300  else if (s->pict_type != AV_PICTURE_TYPE_I)
1301  av_log(avctx, AV_LOG_ERROR,
1302  "warning: first frame is no keyframe\n");
1303 
1304  /* Allocate a dummy frame */
1305  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1306  if (i < 0) {
1307  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1308  return i;
1309  }
1310  s->last_picture_ptr = &s->picture[i];
1311 
1312  s->last_picture_ptr->reference = 3;
1313  s->last_picture_ptr->f->key_frame = 0;
1315 
1316  if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1317  s->last_picture_ptr = NULL;
1318  return -1;
1319  }
1320 
1321  if (!avctx->hwaccel) {
1322  for(i=0; i<avctx->height; i++)
1323  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1324  0x80, avctx->width);
1325  if (s->last_picture_ptr->f->data[2]) {
1326  for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1327  memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1328  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1329  memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1330  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1331  }
1332  }
1333 
1335  for(i=0; i<avctx->height; i++)
1336  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1337  }
1338  }
1339 
1340  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1341  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1342  }
1343  if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1344  s->pict_type == AV_PICTURE_TYPE_B) {
1345  /* Allocate a dummy frame */
1346  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1347  if (i < 0) {
1348  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1349  return i;
1350  }
1351  s->next_picture_ptr = &s->picture[i];
1352 
1353  s->next_picture_ptr->reference = 3;
1354  s->next_picture_ptr->f->key_frame = 0;
1356 
1357  if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1358  s->next_picture_ptr = NULL;
1359  return -1;
1360  }
1361  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1362  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1363  }
1364 
1365 #if 0 // BUFREF-FIXME
1366  memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1367  memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1368 #endif
1369  if (s->last_picture_ptr) {
1370  if (s->last_picture_ptr->f->buf[0] &&
1371  (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1372  s->last_picture_ptr)) < 0)
1373  return ret;
1374  }
1375  if (s->next_picture_ptr) {
1376  if (s->next_picture_ptr->f->buf[0] &&
1377  (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1378  s->next_picture_ptr)) < 0)
1379  return ret;
1380  }
1381 
1383  s->last_picture_ptr->f->buf[0]));
1384 
1385  if (s->picture_structure!= PICT_FRAME) {
1386  int i;
1387  for (i = 0; i < 4; i++) {
1389  s->current_picture.f->data[i] +=
1390  s->current_picture.f->linesize[i];
1391  }
1392  s->current_picture.f->linesize[i] *= 2;
1393  s->last_picture.f->linesize[i] *= 2;
1394  s->next_picture.f->linesize[i] *= 2;
1395  }
1396  }
1397 
1398  /* set dequantizer, we can't do it during init as
1399  * it might change for MPEG-4 and we can't do it in the header
1400  * decode as init is not called for MPEG-4 there yet */
1401  if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1404  } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1407  } else {
1410  }
1411 
1412  if (s->avctx->debug & FF_DEBUG_NOMC) {
1414  }
1415 
1416  return 0;
1417 }
1418 
1419 /* called after a frame has been decoded. */
1421 {
1422  emms_c();
1423 
1424  if (s->current_picture.reference)
1426 }
1427 
1429 {
1431  p->qscale_table, p->motion_val, &s->low_delay,
1432  s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1433 }
1434 
1436 {
1438  int offset = 2*s->mb_stride + 1;
1439  if(!ref)
1440  return AVERROR(ENOMEM);
1441  av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1442  ref->size -= offset;
1443  ref->data += offset;
1444  return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1445 }
1446 
1448  uint8_t *dest, uint8_t *src,
1449  int field_based, int field_select,
1450  int src_x, int src_y,
1451  int width, int height, ptrdiff_t stride,
1452  int h_edge_pos, int v_edge_pos,
1453  int w, int h, h264_chroma_mc_func *pix_op,
1454  int motion_x, int motion_y)
1455 {
1456  const int lowres = s->avctx->lowres;
1457  const int op_index = FFMIN(lowres, 3);
1458  const int s_mask = (2 << lowres) - 1;
1459  int emu = 0;
1460  int sx, sy;
1461 
1462  if (s->quarter_sample) {
1463  motion_x /= 2;
1464  motion_y /= 2;
1465  }
1466 
1467  sx = motion_x & s_mask;
1468  sy = motion_y & s_mask;
1469  src_x += motion_x >> lowres + 1;
1470  src_y += motion_y >> lowres + 1;
1471 
1472  src += src_y * stride + src_x;
1473 
1474  if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1475  (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1477  s->linesize, s->linesize,
1478  w + 1, (h + 1) << field_based,
1479  src_x, src_y << field_based,
1480  h_edge_pos, v_edge_pos);
1481  src = s->sc.edge_emu_buffer;
1482  emu = 1;
1483  }
1484 
1485  sx = (sx << 2) >> lowres;
1486  sy = (sy << 2) >> lowres;
1487  if (field_select)
1488  src += s->linesize;
1489  pix_op[op_index](dest, src, stride, h, sx, sy);
1490  return emu;
1491 }
1492 
1493 /* apply one mpeg motion vector to the three components */
1495  uint8_t *dest_y,
1496  uint8_t *dest_cb,
1497  uint8_t *dest_cr,
1498  int field_based,
1499  int bottom_field,
1500  int field_select,
1501  uint8_t **ref_picture,
1502  h264_chroma_mc_func *pix_op,
1503  int motion_x, int motion_y,
1504  int h, int mb_y)
1505 {
1506  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1507  int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1508  ptrdiff_t uvlinesize, linesize;
1509  const int lowres = s->avctx->lowres;
1510  const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1511  const int block_s = 8>>lowres;
1512  const int s_mask = (2 << lowres) - 1;
1513  const int h_edge_pos = s->h_edge_pos >> lowres;
1514  const int v_edge_pos = s->v_edge_pos >> lowres;
1515  linesize = s->current_picture.f->linesize[0] << field_based;
1516  uvlinesize = s->current_picture.f->linesize[1] << field_based;
1517 
1518  // FIXME obviously not perfect but qpel will not work in lowres anyway
1519  if (s->quarter_sample) {
1520  motion_x /= 2;
1521  motion_y /= 2;
1522  }
1523 
1524  if(field_based){
1525  motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1526  }
1527 
1528  sx = motion_x & s_mask;
1529  sy = motion_y & s_mask;
1530  src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1531  src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1532 
1533  if (s->out_format == FMT_H263) {
1534  uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1535  uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1536  uvsrc_x = src_x >> 1;
1537  uvsrc_y = src_y >> 1;
1538  } else if (s->out_format == FMT_H261) {
1539  // even chroma mv's are full pel in H261
1540  mx = motion_x / 4;
1541  my = motion_y / 4;
1542  uvsx = (2 * mx) & s_mask;
1543  uvsy = (2 * my) & s_mask;
1544  uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1545  uvsrc_y = mb_y * block_s + (my >> lowres);
1546  } else {
1547  if(s->chroma_y_shift){
1548  mx = motion_x / 2;
1549  my = motion_y / 2;
1550  uvsx = mx & s_mask;
1551  uvsy = my & s_mask;
1552  uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1553  uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1554  } else {
1555  if(s->chroma_x_shift){
1556  //Chroma422
1557  mx = motion_x / 2;
1558  uvsx = mx & s_mask;
1559  uvsy = motion_y & s_mask;
1560  uvsrc_y = src_y;
1561  uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1562  } else {
1563  //Chroma444
1564  uvsx = motion_x & s_mask;
1565  uvsy = motion_y & s_mask;
1566  uvsrc_x = src_x;
1567  uvsrc_y = src_y;
1568  }
1569  }
1570  }
1571 
1572  ptr_y = ref_picture[0] + src_y * linesize + src_x;
1573  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1574  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1575 
1576  if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1577  (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1578  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1579  linesize >> field_based, linesize >> field_based,
1580  17, 17 + field_based,
1581  src_x, src_y << field_based, h_edge_pos,
1582  v_edge_pos);
1583  ptr_y = s->sc.edge_emu_buffer;
1584  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1585  uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1586  uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1587  if (s->workaround_bugs & FF_BUG_IEDGE)
1588  vbuf -= s->uvlinesize;
1589  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1590  uvlinesize >> field_based, uvlinesize >> field_based,
1591  9, 9 + field_based,
1592  uvsrc_x, uvsrc_y << field_based,
1593  h_edge_pos >> 1, v_edge_pos >> 1);
1594  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1595  uvlinesize >> field_based,uvlinesize >> field_based,
1596  9, 9 + field_based,
1597  uvsrc_x, uvsrc_y << field_based,
1598  h_edge_pos >> 1, v_edge_pos >> 1);
1599  ptr_cb = ubuf;
1600  ptr_cr = vbuf;
1601  }
1602  }
1603 
1604  // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1605  if (bottom_field) {
1606  dest_y += s->linesize;
1607  dest_cb += s->uvlinesize;
1608  dest_cr += s->uvlinesize;
1609  }
1610 
1611  if (field_select) {
1612  ptr_y += s->linesize;
1613  ptr_cb += s->uvlinesize;
1614  ptr_cr += s->uvlinesize;
1615  }
1616 
1617  sx = (sx << 2) >> lowres;
1618  sy = (sy << 2) >> lowres;
1619  pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1620 
1621  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1622  int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1623  uvsx = (uvsx << 2) >> lowres;
1624  uvsy = (uvsy << 2) >> lowres;
1625  if (hc) {
1626  pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1627  pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1628  }
1629  }
1630  // FIXME h261 lowres loop filter
1631 }
1632 
1634  uint8_t *dest_cb, uint8_t *dest_cr,
1635  uint8_t **ref_picture,
1636  h264_chroma_mc_func * pix_op,
1637  int mx, int my)
1638 {
1639  const int lowres = s->avctx->lowres;
1640  const int op_index = FFMIN(lowres, 3);
1641  const int block_s = 8 >> lowres;
1642  const int s_mask = (2 << lowres) - 1;
1643  const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1644  const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1645  int emu = 0, src_x, src_y, sx, sy;
1646  ptrdiff_t offset;
1647  uint8_t *ptr;
1648 
1649  if (s->quarter_sample) {
1650  mx /= 2;
1651  my /= 2;
1652  }
1653 
1654  /* In case of 8X8, we construct a single chroma motion vector
1655  with a special rounding */
1656  mx = ff_h263_round_chroma(mx);
1657  my = ff_h263_round_chroma(my);
1658 
1659  sx = mx & s_mask;
1660  sy = my & s_mask;
1661  src_x = s->mb_x * block_s + (mx >> lowres + 1);
1662  src_y = s->mb_y * block_s + (my >> lowres + 1);
1663 
1664  offset = src_y * s->uvlinesize + src_x;
1665  ptr = ref_picture[1] + offset;
1666  if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1667  (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1669  s->uvlinesize, s->uvlinesize,
1670  9, 9,
1671  src_x, src_y, h_edge_pos, v_edge_pos);
1672  ptr = s->sc.edge_emu_buffer;
1673  emu = 1;
1674  }
1675  sx = (sx << 2) >> lowres;
1676  sy = (sy << 2) >> lowres;
1677  pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1678 
1679  ptr = ref_picture[2] + offset;
1680  if (emu) {
1682  s->uvlinesize, s->uvlinesize,
1683  9, 9,
1684  src_x, src_y, h_edge_pos, v_edge_pos);
1685  ptr = s->sc.edge_emu_buffer;
1686  }
1687  pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1688 }
1689 
1690 /**
1691  * motion compensation of a single macroblock
1692  * @param s context
1693  * @param dest_y luma destination pointer
1694  * @param dest_cb chroma cb/u destination pointer
1695  * @param dest_cr chroma cr/v destination pointer
1696  * @param dir direction (0->forward, 1->backward)
1697  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1698  * @param pix_op halfpel motion compensation function (average or put normally)
1699  * the motion vectors are taken from s->mv and the MV type from s->mv_type
1700  */
1701 static inline void MPV_motion_lowres(MpegEncContext *s,
1702  uint8_t *dest_y, uint8_t *dest_cb,
1703  uint8_t *dest_cr,
1704  int dir, uint8_t **ref_picture,
1705  h264_chroma_mc_func *pix_op)
1706 {
1707  int mx, my;
1708  int mb_x, mb_y, i;
1709  const int lowres = s->avctx->lowres;
1710  const int block_s = 8 >>lowres;
1711 
1712  mb_x = s->mb_x;
1713  mb_y = s->mb_y;
1714 
1715  switch (s->mv_type) {
1716  case MV_TYPE_16X16:
1717  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1718  0, 0, 0,
1719  ref_picture, pix_op,
1720  s->mv[dir][0][0], s->mv[dir][0][1],
1721  2 * block_s, mb_y);
1722  break;
1723  case MV_TYPE_8X8:
1724  mx = 0;
1725  my = 0;
1726  for (i = 0; i < 4; i++) {
1727  hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1728  s->linesize) * block_s,
1729  ref_picture[0], 0, 0,
1730  (2 * mb_x + (i & 1)) * block_s,
1731  (2 * mb_y + (i >> 1)) * block_s,
1732  s->width, s->height, s->linesize,
1733  s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1734  block_s, block_s, pix_op,
1735  s->mv[dir][i][0], s->mv[dir][i][1]);
1736 
1737  mx += s->mv[dir][i][0];
1738  my += s->mv[dir][i][1];
1739  }
1740 
1741  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1742  chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1743  pix_op, mx, my);
1744  break;
1745  case MV_TYPE_FIELD:
1746  if (s->picture_structure == PICT_FRAME) {
1747  /* top field */
1748  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1749  1, 0, s->field_select[dir][0],
1750  ref_picture, pix_op,
1751  s->mv[dir][0][0], s->mv[dir][0][1],
1752  block_s, mb_y);
1753  /* bottom field */
1754  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1755  1, 1, s->field_select[dir][1],
1756  ref_picture, pix_op,
1757  s->mv[dir][1][0], s->mv[dir][1][1],
1758  block_s, mb_y);
1759  } else {
1760  if (s->picture_structure != s->field_select[dir][0] + 1 &&
1761  s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1762  ref_picture = s->current_picture_ptr->f->data;
1763 
1764  }
1765  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1766  0, 0, s->field_select[dir][0],
1767  ref_picture, pix_op,
1768  s->mv[dir][0][0],
1769  s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1770  }
1771  break;
1772  case MV_TYPE_16X8:
1773  for (i = 0; i < 2; i++) {
1774  uint8_t **ref2picture;
1775 
1776  if (s->picture_structure == s->field_select[dir][i] + 1 ||
1777  s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1778  ref2picture = ref_picture;
1779  } else {
1780  ref2picture = s->current_picture_ptr->f->data;
1781  }
1782 
1783  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1784  0, 0, s->field_select[dir][i],
1785  ref2picture, pix_op,
1786  s->mv[dir][i][0], s->mv[dir][i][1] +
1787  2 * block_s * i, block_s, mb_y >> 1);
1788 
1789  dest_y += 2 * block_s * s->linesize;
1790  dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1791  dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1792  }
1793  break;
1794  case MV_TYPE_DMV:
1795  if (s->picture_structure == PICT_FRAME) {
1796  for (i = 0; i < 2; i++) {
1797  int j;
1798  for (j = 0; j < 2; j++) {
1799  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1800  1, j, j ^ i,
1801  ref_picture, pix_op,
1802  s->mv[dir][2 * i + j][0],
1803  s->mv[dir][2 * i + j][1],
1804  block_s, mb_y);
1805  }
1807  }
1808  } else {
1809  for (i = 0; i < 2; i++) {
1810  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1811  0, 0, s->picture_structure != i + 1,
1812  ref_picture, pix_op,
1813  s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1814  2 * block_s, mb_y >> 1);
1815 
1816  // after put we make avg of the same block
1818 
1819  // opposite parity is always in the same
1820  // frame if this is second field
1821  if (!s->first_field) {
1822  ref_picture = s->current_picture_ptr->f->data;
1823  }
1824  }
1825  }
1826  break;
1827  default:
1828  av_assert2(0);
1829  }
1830 }
1831 
1832 /**
1833  * find the lowest MB row referenced in the MVs
1834  */
1836 {
1837  int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1838  int my, off, i, mvs;
1839 
1840  if (s->picture_structure != PICT_FRAME || s->mcsel)
1841  goto unhandled;
1842 
1843  switch (s->mv_type) {
1844  case MV_TYPE_16X16:
1845  mvs = 1;
1846  break;
1847  case MV_TYPE_16X8:
1848  mvs = 2;
1849  break;
1850  case MV_TYPE_8X8:
1851  mvs = 4;
1852  break;
1853  default:
1854  goto unhandled;
1855  }
1856 
1857  for (i = 0; i < mvs; i++) {
1858  my = s->mv[dir][i][1];
1859  my_max = FFMAX(my_max, my);
1860  my_min = FFMIN(my_min, my);
1861  }
1862 
1863  off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1864 
1865  return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1866 unhandled:
1867  return s->mb_height-1;
1868 }
1869 
1870 /* put block[] to dest[] */
1871 static inline void put_dct(MpegEncContext *s,
1872  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1873 {
1874  s->dct_unquantize_intra(s, block, i, qscale);
1875  s->idsp.idct_put(dest, line_size, block);
1876 }
1877 
1878 /* add block[] to dest[] */
1879 static inline void add_dct(MpegEncContext *s,
1880  int16_t *block, int i, uint8_t *dest, int line_size)
1881 {
1882  if (s->block_last_index[i] >= 0) {
1883  s->idsp.idct_add(dest, line_size, block);
1884  }
1885 }
1886 
1887 static inline void add_dequant_dct(MpegEncContext *s,
1888  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1889 {
1890  if (s->block_last_index[i] >= 0) {
1891  s->dct_unquantize_inter(s, block, i, qscale);
1892 
1893  s->idsp.idct_add(dest, line_size, block);
1894  }
1895 }
1896 
1897 /**
1898  * Clean dc, ac, coded_block for the current non-intra MB.
1899  */
1901 {
1902  int wrap = s->b8_stride;
1903  int xy = s->block_index[0];
1904 
1905  s->dc_val[0][xy ] =
1906  s->dc_val[0][xy + 1 ] =
1907  s->dc_val[0][xy + wrap] =
1908  s->dc_val[0][xy + 1 + wrap] = 1024;
1909  /* ac pred */
1910  memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1911  memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1912  if (s->msmpeg4_version>=3) {
1913  s->coded_block[xy ] =
1914  s->coded_block[xy + 1 ] =
1915  s->coded_block[xy + wrap] =
1916  s->coded_block[xy + 1 + wrap] = 0;
1917  }
1918  /* chroma */
1919  wrap = s->mb_stride;
1920  xy = s->mb_x + s->mb_y * wrap;
1921  s->dc_val[1][xy] =
1922  s->dc_val[2][xy] = 1024;
1923  /* ac pred */
1924  memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1925  memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1926 
1927  s->mbintra_table[xy]= 0;
1928 }
1929 
1930 /* generic function called after a macroblock has been parsed by the
1931  decoder or after it has been encoded by the encoder.
1932 
1933  Important variables used:
1934  s->mb_intra : true if intra macroblock
1935  s->mv_dir : motion vector direction
1936  s->mv_type : motion vector type
1937  s->mv : motion vector
1938  s->interlaced_dct : true if interlaced dct used (mpeg2)
1939  */
1940 static av_always_inline
1942  int lowres_flag, int is_mpeg12)
1943 {
1944  const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1945 
1946  if (CONFIG_XVMC &&
1947  s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1948  s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1949  return;
1950  }
1951 
1952  if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1953  /* print DCT coefficients */
1954  int i,j;
1955  av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1956  for(i=0; i<6; i++){
1957  for(j=0; j<64; j++){
1958  av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1959  block[i][s->idsp.idct_permutation[j]]);
1960  }
1961  av_log(s->avctx, AV_LOG_DEBUG, "\n");
1962  }
1963  }
1964 
1965  s->current_picture.qscale_table[mb_xy] = s->qscale;
1966 
1967  /* update DC predictors for P macroblocks */
1968  if (!s->mb_intra) {
1969  if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1970  if(s->mbintra_table[mb_xy])
1972  } else {
1973  s->last_dc[0] =
1974  s->last_dc[1] =
1975  s->last_dc[2] = 128 << s->intra_dc_precision;
1976  }
1977  }
1978  else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1979  s->mbintra_table[mb_xy]=1;
1980 
1982  !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1983  s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1984  uint8_t *dest_y, *dest_cb, *dest_cr;
1985  int dct_linesize, dct_offset;
1986  op_pixels_func (*op_pix)[4];
1987  qpel_mc_func (*op_qpix)[16];
1988  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
1989  const int uvlinesize = s->current_picture.f->linesize[1];
1990  const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
1991  const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
1992 
1993  /* avoid copy if macroblock skipped in last frame too */
1994  /* skip only during decoding as we might trash the buffers during encoding a bit */
1995  if(!s->encoding){
1996  uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
1997 
1998  if (s->mb_skipped) {
1999  s->mb_skipped= 0;
2001  *mbskip_ptr = 1;
2002  } else if(!s->current_picture.reference) {
2003  *mbskip_ptr = 1;
2004  } else{
2005  *mbskip_ptr = 0; /* not skipped */
2006  }
2007  }
2008 
2009  dct_linesize = linesize << s->interlaced_dct;
2010  dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2011 
2012  if(readable){
2013  dest_y= s->dest[0];
2014  dest_cb= s->dest[1];
2015  dest_cr= s->dest[2];
2016  }else{
2017  dest_y = s->sc.b_scratchpad;
2018  dest_cb= s->sc.b_scratchpad+16*linesize;
2019  dest_cr= s->sc.b_scratchpad+32*linesize;
2020  }
2021 
2022  if (!s->mb_intra) {
2023  /* motion handling */
2024  /* decoding or more than one mb_type (MC was already done otherwise) */
2025  if(!s->encoding){
2026 
2027  if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2028  if (s->mv_dir & MV_DIR_FORWARD) {
2030  lowest_referenced_row(s, 0),
2031  0);
2032  }
2033  if (s->mv_dir & MV_DIR_BACKWARD) {
2035  lowest_referenced_row(s, 1),
2036  0);
2037  }
2038  }
2039 
2040  if(lowres_flag){
2042 
2043  if (s->mv_dir & MV_DIR_FORWARD) {
2044  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2046  }
2047  if (s->mv_dir & MV_DIR_BACKWARD) {
2048  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2049  }
2050  }else{
2051  op_qpix = s->me.qpel_put;
2052  if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2053  op_pix = s->hdsp.put_pixels_tab;
2054  }else{
2055  op_pix = s->hdsp.put_no_rnd_pixels_tab;
2056  }
2057  if (s->mv_dir & MV_DIR_FORWARD) {
2058  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2059  op_pix = s->hdsp.avg_pixels_tab;
2060  op_qpix= s->me.qpel_avg;
2061  }
2062  if (s->mv_dir & MV_DIR_BACKWARD) {
2063  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2064  }
2065  }
2066  }
2067 
2068  /* skip dequant / idct if we are really late ;) */
2069  if(s->avctx->skip_idct){
2072  || s->avctx->skip_idct >= AVDISCARD_ALL)
2073  goto skip_idct;
2074  }
2075 
2076  /* add dct residue */
2078  || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2079  add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2080  add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2081  add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2082  add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2083 
2084  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2085  if (s->chroma_y_shift){
2086  add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2087  add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2088  }else{
2089  dct_linesize >>= 1;
2090  dct_offset >>=1;
2091  add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2092  add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2093  add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2094  add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2095  }
2096  }
2097  } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2098  add_dct(s, block[0], 0, dest_y , dct_linesize);
2099  add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2100  add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2101  add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2102 
2103  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2104  if(s->chroma_y_shift){//Chroma420
2105  add_dct(s, block[4], 4, dest_cb, uvlinesize);
2106  add_dct(s, block[5], 5, dest_cr, uvlinesize);
2107  }else{
2108  //chroma422
2109  dct_linesize = uvlinesize << s->interlaced_dct;
2110  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2111 
2112  add_dct(s, block[4], 4, dest_cb, dct_linesize);
2113  add_dct(s, block[5], 5, dest_cr, dct_linesize);
2114  add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2115  add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2116  if(!s->chroma_x_shift){//Chroma444
2117  add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2118  add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2119  add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2120  add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2121  }
2122  }
2123  }//fi gray
2124  }
2125  else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2126  ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2127  }
2128  } else {
2129  /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
2130  TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
2131  if (s->avctx->bits_per_raw_sample > 8){
2132  const int act_block_size = block_size * 2;
2133  s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]);
2134  s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
2135  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]);
2136  s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
2137 
2138  dct_linesize = uvlinesize << s->interlaced_dct;
2139  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2140 
2141  s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]);
2142  s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]);
2143  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
2144  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
2145  if(!s->chroma_x_shift){//Chroma444
2146  s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]);
2147  s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]);
2148  s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
2149  s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
2150  }
2151  }
2152  /* dct only in intra block */
2154  put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2155  put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2156  put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2157  put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2158 
2159  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2160  if(s->chroma_y_shift){
2161  put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2162  put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2163  }else{
2164  dct_offset >>=1;
2165  dct_linesize >>=1;
2166  put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2167  put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2168  put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2169  put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2170  }
2171  }
2172  }else{
2173  s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2174  s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2175  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2176  s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2177 
2178  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2179  if(s->chroma_y_shift){
2180  s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2181  s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2182  }else{
2183 
2184  dct_linesize = uvlinesize << s->interlaced_dct;
2185  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2186 
2187  s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2188  s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2189  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2190  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2191  if(!s->chroma_x_shift){//Chroma444
2192  s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2193  s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2194  s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2195  s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2196  }
2197  }
2198  }//gray
2199  }
2200  }
2201 skip_idct:
2202  if(!readable){
2203  s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2204  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2205  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2206  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2207  }
2208  }
2209  }
2210 }
2211 
2213 {
2214 #if !CONFIG_SMALL
2215  if(s->out_format == FMT_MPEG1) {
2216  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2217  else mpv_reconstruct_mb_internal(s, block, 0, 1);
2218  } else
2219 #endif
2220  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2221  else mpv_reconstruct_mb_internal(s, block, 0, 0);
2222 }
2223 
2225 {
2228  s->first_field, s->low_delay);
2229 }
2230 
2231 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2232  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2233  const int uvlinesize = s->current_picture.f->linesize[1];
2234  const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
2235  const int height_of_mb = 4 - s->avctx->lowres;
2236 
2237  s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2238  s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2239  s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2240  s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2241  s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2242  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;
2243  //block_index is not used by mpeg2, so it is not affected by chroma_format
2244 
2245  s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb);
2246  s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2247  s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2248 
2250  {
2251  if(s->picture_structure==PICT_FRAME){
2252  s->dest[0] += s->mb_y * linesize << height_of_mb;
2253  s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2254  s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2255  }else{
2256  s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb;
2257  s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2258  s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2260  }
2261  }
2262 }
2263 
2265  int i;
2266  MpegEncContext *s = avctx->priv_data;
2267 
2268  if (!s || !s->picture)
2269  return;
2270 
2271  for (i = 0; i < MAX_PICTURE_COUNT; i++)
2272  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2274 
2278 
2279  s->mb_x= s->mb_y= 0;
2280  s->closed_gop= 0;
2281 
2282  s->parse_context.state= -1;
2284  s->parse_context.overread= 0;
2286  s->parse_context.index= 0;
2287  s->parse_context.last_index= 0;
2288  s->bitstream_buffer_size=0;
2289  s->pp_time=0;
2290 }
2291 
2292 /**
2293  * set qscale and update qscale dependent variables.
2294  */
2295 void ff_set_qscale(MpegEncContext * s, int qscale)
2296 {
2297  if (qscale < 1)
2298  qscale = 1;
2299  else if (qscale > 31)
2300  qscale = 31;
2301 
2302  s->qscale = qscale;
2303  s->chroma_qscale= s->chroma_qscale_table[qscale];
2304 
2305  s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2307 }
2308 
2310 {
2313 }
int last_time_base
Definition: mpegvideo.h:388
int bitstream_buffer_size
Definition: mpegvideo.h:416
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free.
Definition: motion_est.h:52
#define AV_CODEC_FLAG_INTERLACED_ME
interlaced motion estimation
Definition: avcodec.h:895
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
Definition: frame.c:54
IDCTDSPContext idsp
Definition: mpegvideo.h:230
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:38
#define NULL
Definition: coverity.c:32
static int init_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:356
int ff_thread_can_start_frame(AVCodecContext *avctx)
const struct AVCodec * codec
Definition: avcodec.h:1527
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:244
av_cold void ff_mpv_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:43
discard all frames except keyframes
Definition: avcodec.h:793
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2231
int picture_number
Definition: mpegvideo.h:127
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:83
av_cold void ff_mpv_common_init_neon(MpegEncContext *s)
Definition: mpegvideo.c:126
ScanTable intra_v_scantable
Definition: mpegvideo.h:93
av_cold void ff_mpegvideodsp_init(MpegVideoDSPContext *c)
Definition: mpegvideodsp.c:110
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:532
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:248
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:153
#define MV_TYPE_FIELD
2 vectors, one per field
Definition: mpegvideo.h:269
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:188
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegpicture.h:36
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1705
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:1941
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:1633
uint8_t * coded_block_base
Definition: mpegvideo.h:191
void(* h264_chroma_mc_func)(uint8_t *dst, uint8_t *src, ptrdiff_t srcStride, int h, int x, int y)
Definition: h264chroma.h:25
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:410
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:154
int16_t(*[3] ac_val)[16]
used for MPEG-4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:194
MJPEG encoder.
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:132
h264_chroma_mc_func put_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:28
#define me
static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
Definition: mpegvideo.c:276
static void gray_frame(AVFrame *frame)
Definition: mpegvideo.c:1176
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:438
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
Definition: mpegpicture.h:85
uint8_t * bitstream_buffer
Definition: mpegvideo.h:415
enum AVCodecID codec_id
Definition: mpegvideo.h:112
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:79
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1727
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:254
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:240
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:1835
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:794
uint8_t permutated[64]
Definition: idctdsp.h:33
static void free_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:411
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2741
int padding_bug_score
used to detect the VERY common padding bug in MPEG-4
Definition: mpegvideo.h:411
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
Definition: mpegpicture.c:361
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:133
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2674
#define src
Definition: vp8dsp.c:254
void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last, int y, int h, int picture_structure, int first_field, int low_delay)
Draw a horizontal band if supported.
Definition: mpegutils.c:51
int frame_start_found
Definition: parser.h:34
int qscale
QP.
Definition: mpegvideo.h:204
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:87
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:250
enum AVPictureType last_picture
Definition: movenc.c:68
int chroma_x_shift
Definition: mpegvideo.h:485
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:114
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:526
int field_select[2][2]
Definition: mpegvideo.h:277
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:530
int block_wrap[6]
Definition: mpegvideo.h:294
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:82
Macro definitions for various function/variable attributes.
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:242
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
Definition: mpegvideo.c:432
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:1900
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:528
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:2224
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:561
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:34
int16_t * dc_val_base
Definition: mpegvideo.h:186
ScratchpadContext sc
Definition: mpegvideo.h:202
uint8_t
#define ME_MAP_SIZE
Definition: motion_est.h:38
#define av_cold
Definition: attributes.h:82
av_cold void ff_mpv_common_init_axp(MpegEncContext *s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
enum OutputFormat out_format
output format
Definition: mpegvideo.h:104
#define f(width, name)
Definition: cbs_vp9.c:255
int ff_mpv_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1043
int noise_reduction
Definition: mpegvideo.h:579
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:200
Multithreading support functions.
int frame_skip_threshold
Definition: mpegvideo.h:573
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
void ff_free_picture_tables(Picture *pic)
Definition: mpegpicture.c:460
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
int interlaced_dct
Definition: mpegvideo.h:490
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Definition: mpegpicture.c:446
int intra_dc_precision
Definition: mpegvideo.h:463
static AVFrame * frame
quarterpel DSP functions
void ff_mpv_common_init_ppc(MpegEncContext *s)
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
#define height
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:251
float * cplx_tab
Definition: mpegvideo.h:557
#define ff_dlog(a,...)
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3697
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:392
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Definition: mpegvideo.c:348
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:365
av_cold void ff_mpv_idct_init(MpegEncContext *s)
Definition: mpegvideo.c:330
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2749
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:120
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:861
high precision timer, useful to profile code
int16_t(*[2][2] p_field_mv_table_base)[2]
Definition: mpegvideo.h:246
#define FF_BUG_IEDGE
Definition: avcodec.h:2562
#define av_log(a,...)
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:2295
static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
Definition: mpegvideo.c:270
int intra_only
if true, only intra pictures are generated
Definition: mpegvideo.h:102
ThreadFrame tf
Definition: mpegpicture.h:47
#define U(x)
Definition: vp56_arith.h:37
int16_t * dc_val[3]
used for MPEG-4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:187
enum AVCodecID id
Definition: avcodec.h:3422
int h263_plus
H.263+ headers.
Definition: mpegvideo.h:109
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:156
unsigned int buffer_size
Definition: parser.h:32
int width
Definition: frame.h:276
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int last_dc[3]
last DC values for MPEG-1
Definition: mpegvideo.h:185
static void add_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size)
Definition: mpegvideo.c:1879
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:195
int chroma_y_shift
Definition: mpegvideo.h:486
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:405
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
Definition: mpegpicture.h:37
#define AVERROR(e)
Definition: error.h:43
#define MAX_PICTURE_COUNT
Definition: mpegpicture.h:32
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2412
ERContext er
Definition: mpegvideo.h:563
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2788
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:219
int reference
Definition: mpegpicture.h:87
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:141
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:524
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:518
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1598
#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:1871
simple assert() macros that are a bit more flexible than ISO C assert().
int overread_index
the index into ParseContext.buffer of the overread bytes
Definition: parser.h:36
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:53
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:401
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:291
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:406
uint8_t *[2][2] b_field_select_table
Definition: mpegvideo.h:257
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:283
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1122
#define FFMAX(a, b)
Definition: common.h:94
av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:454
#define fail()
Definition: checkasm.h:117
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2264
return
av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
Definition: hpeldsp.c:338
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:126
int * lambda_table
Definition: mpegvideo.h:208
uint8_t * error_status_table
const uint8_t ff_alternate_horizontal_scan[64]
Definition: mpegvideodata.c:89
int ff_mpeg_er_init(MpegEncContext *s)
Definition: mpeg_er.c: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:488
common internal API header
#define MAX_THREADS
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:282
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
void(* draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)
If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band...
Definition: avcodec.h:1752
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:1435
int progressive_frame
Definition: mpegvideo.h:488
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:301
#define UPDATE_PICTURE(pic)
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:886
int top_field_first
Definition: mpegvideo.h:465
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2780
uint8_t * er_temp_buffer
int overread
the number of bytes which where irreversibly read from the next frame
Definition: parser.h:35
#define FFMIN(a, b)
Definition: common.h:96
int last_index
Definition: parser.h:31
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed B-frames
Definition: mpegvideo.h:360
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:175
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:174
int width
picture width / height.
Definition: avcodec.h:1690
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for B-frame encodin...
Definition: mpegvideo.h:196
uint8_t w
Definition: llviddspenc.c:38
int16_t(*[2] motion_val)[2]
Definition: mpegpicture.h:53
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:470
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:417
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
int16_t(* ac_val_base)[16]
Definition: mpegvideo.h:193
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:865
#define s(width, name)
Definition: cbs_vp9.c:257
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:2781
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:247
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:241
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:505
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
MotionEstContext me
Definition: mpegvideo.h:282
int frame_skip_factor
Definition: mpegvideo.h:574
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:2005
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:198
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegutils.c:103
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: mpegvideo.c:488
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:662
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2769
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:293
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:297
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:491
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:291
#define MV_TYPE_16X16
1 vector for the whole mb
Definition: mpegvideo.h:266
static void clear_context(MpegEncContext *s)
Definition: mpegvideo.c:803
AVBufferRef * qscale_table_buf
Definition: mpegpicture.h:49
#define MV_DIR_BACKWARD
Definition: mpegvideo.h:263
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:243
int coded_picture_number
picture number in bitstream order
Definition: frame.h:332
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
uint8_t * buffer
Definition: parser.h:29
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:155
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:134
BlockDSPContext bdsp
Definition: mpegvideo.h:226
enum AVDiscard skip_idct
Skip IDCT/dequantization for selected frames.
Definition: avcodec.h:2968
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
int debug
debug
Definition: avcodec.h:2598
main external API structure.
Definition: avcodec.h:1518
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int shared, int encoding, int chroma_x_shift, int chroma_y_shift, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
Allocate a Picture.
Definition: mpegpicture.c:231
ScanTable intra_scantable
Definition: mpegvideo.h:91
uint8_t * data
The data buffer.
Definition: buffer.h:89
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
Definition: mpegvideo.h:192
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:100
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1543
static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:111
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:56
#define MV_TYPE_16X8
2 vectors, one per 16x8 block
Definition: mpegvideo.h:268
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1428
uint32_t state
contains the last few bytes in MSB order
Definition: parser.h:33
Picture * picture
main picture buffer
Definition: mpegvideo.h:136
int progressive_sequence
Definition: mpegvideo.h:456
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:79
int coded_height
Definition: avcodec.h:1705
ScanTable intra_h_scantable
Definition: mpegvideo.h:92
op_pixels_func put_no_rnd_pixels_tab[4][4]
Halfpel motion compensation with no rounding (a+b)>>1.
Definition: hpeldsp.h:82
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced B-frame encoding.
Definition: mpegvideo.h:255
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:199
int closed_gop
MPEG1/2 GOP is closed.
Definition: mpegvideo.h:211
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me, ScratchpadContext *sc, int linesize)
Definition: mpegpicture.c:57
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:1776
#define FF_DEBUG_DCT_COEFF
Definition: avcodec.h:2610
struct AVFrame * f
Definition: mpegpicture.h:46
#define FF_MB_DECISION_RD
rate distortion
Definition: avcodec.h:2008
int context_initialized
Definition: mpegvideo.h:124
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:135
#define s1
Definition: regdef.h:38
static int ff_h263_round_chroma(int x)
Definition: motion_est.h:101
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo.c:1196
int f_code
forward MV resolution
Definition: mpegvideo.h:238
#define COPY(a)
#define MV_DIR_FORWARD
Definition: mpegvideo.h:262
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:115
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
int size
Size of data in bytes.
Definition: buffer.h:93
int h263_pred
use MPEG-4/H.263 ac/dc predictions
Definition: mpegvideo.h:105
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:252
static int init_context_frame(MpegEncContext *s)
Initialize and allocates MpegEncContext fields dependent on the resolution.
Definition: mpegvideo.c:682
uint8_t *[2] p_field_select_table
Definition: mpegvideo.h:256
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode B-frame encoding.
Definition: mpegvideo.h:253
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:189
uint8_t level
Definition: svq3.c:207
qpel_mc_func(* qpel_avg)[16]
Definition: motion_est.h:92
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:276
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode B-frame encoding.
Definition: mpegvideo.h:249
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:131
static void dct_unquantize_h263_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:209
MpegEncContext.
Definition: mpegvideo.h:81
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:183
int8_t * qscale_table
Definition: mpegpicture.h:50
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
Deallocate a picture.
Definition: mpegpicture.c:294
A reference to a data buffer.
Definition: buffer.h:81
discard all non reference
Definition: avcodec.h:790
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int
MpegVideoDSPContext mdsp
Definition: mpegvideo.h:232
int(* dct_error_sum)[64]
Definition: mpegvideo.h:332
common internal api header.
int32_t(* block32)[12][64]
Definition: mpegvideo.h:511
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:130
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Definition: mpegvideo.c:667
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
const uint8_t ff_default_chroma_qscale_table[32]
Definition: mpegvideodata.c:21
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:72
uint8_t * dest[3]
Definition: mpegvideo.h:295
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)
Definition: internal.h:140
static av_cold int dct_init(MpegEncContext *s)
Definition: mpegvideo.c:283
int last_pict_type
Definition: mpegvideo.h:214
static void dct_unquantize_h263_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:243
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:162
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:182
Bi-dir predicted.
Definition: avutil.h:276
int index
Definition: parser.h:30
int workaround_bugs
Work around bugs in encoders which sometimes cannot be detected automatically.
Definition: avcodec.h:2547
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
Definition: mpegpicture.h:39
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (H.263)
Definition: mpegvideo.h:190
const uint8_t ff_alternate_vertical_scan[64]
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
Definition: mpegvideo.c:460
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:520
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:773
static int lowres
Definition: ffplay.c:331
H264ChromaContext h264chroma
Definition: mpegvideo.h:228
int16_t(* blocks)[12][64]
Definition: mpegvideo.h:508
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:29
int slices
Number of slices.
Definition: avcodec.h:2164
void * priv_data
Definition: avcodec.h:1545
#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:883
int picture_structure
Definition: mpegvideo.h:460
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: idctdsp.c:29
VideoDSPContext vdsp
Definition: mpegvideo.h:236
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
Definition: idctdsp.c:238
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:370
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1420
#define MV_TYPE_DMV
2 vectors, special mpeg2 Dual Prime Vectors
Definition: mpegvideo.h:270
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2212
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:507
ParseContext parse_context
Definition: mpegvideo.h:362
static void add_dequant_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1887
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:168
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:296
#define FF_DEBUG_NOMC
Definition: avcodec.h:2623
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:1494
int chroma_qscale
chroma QP
Definition: mpegvideo.h:205
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:522
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:639
static void free_context_frame(MpegEncContext *s)
Frees and resets MpegEncContext fields depending on the resolution.
Definition: mpegvideo.c:994
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:1447
int height
Definition: frame.h:276
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegpicture.h:56
#define av_freep(p)
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:119
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:90
#define av_always_inline
Definition: attributes.h:39
uint8_t * temp
Definition: motion_est.h:56
#define FFSWAP(type, a, b)
Definition: common.h:99
#define stride
#define MV_TYPE_8X8
4 vectors (H.263, MPEG-4 4MV)
Definition: mpegvideo.h:267
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:245
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:239
float * bits_tab
Definition: mpegvideo.h:557
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:2309
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:1701
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
Definition: internal.h:149
Predicted.
Definition: avutil.h:275
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
HpelDSPContext hdsp
Definition: mpegvideo.h:229