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mpegvideo.c
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1 /*
2  * The simplest mpeg encoder (well, it was the simplest!)
3  * Copyright (c) 2000,2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 /**
26  * @file
27  * The simplest mpeg encoder (well, it was the simplest!).
28  */
29 
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
35 #include "libavutil/timer.h"
36 #include "avcodec.h"
37 #include "blockdsp.h"
38 #include "h264chroma.h"
39 #include "idctdsp.h"
40 #include "internal.h"
41 #include "mathops.h"
42 #include "mpeg_er.h"
43 #include "mpegutils.h"
44 #include "mpegvideo.h"
45 #include "mpegvideodata.h"
46 #include "mjpegenc.h"
47 #include "msmpeg4.h"
48 #include "qpeldsp.h"
49 #include "thread.h"
50 #include "wmv2.h"
51 #include <limits.h>
52 
54  int16_t *block, int n, int qscale)
55 {
56  int i, level, nCoeffs;
57  const uint16_t *quant_matrix;
58 
59  nCoeffs= s->block_last_index[n];
60 
61  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
62  /* XXX: only MPEG-1 */
63  quant_matrix = s->intra_matrix;
64  for(i=1;i<=nCoeffs;i++) {
65  int j= s->intra_scantable.permutated[i];
66  level = block[j];
67  if (level) {
68  if (level < 0) {
69  level = -level;
70  level = (int)(level * qscale * quant_matrix[j]) >> 3;
71  level = (level - 1) | 1;
72  level = -level;
73  } else {
74  level = (int)(level * qscale * quant_matrix[j]) >> 3;
75  level = (level - 1) | 1;
76  }
77  block[j] = level;
78  }
79  }
80 }
81 
83  int16_t *block, int n, int qscale)
84 {
85  int i, level, nCoeffs;
86  const uint16_t *quant_matrix;
87 
88  nCoeffs= s->block_last_index[n];
89 
90  quant_matrix = s->inter_matrix;
91  for(i=0; i<=nCoeffs; i++) {
92  int j= s->intra_scantable.permutated[i];
93  level = block[j];
94  if (level) {
95  if (level < 0) {
96  level = -level;
97  level = (((level << 1) + 1) * qscale *
98  ((int) (quant_matrix[j]))) >> 4;
99  level = (level - 1) | 1;
100  level = -level;
101  } else {
102  level = (((level << 1) + 1) * qscale *
103  ((int) (quant_matrix[j]))) >> 4;
104  level = (level - 1) | 1;
105  }
106  block[j] = level;
107  }
108  }
109 }
110 
112  int16_t *block, int n, int qscale)
113 {
114  int i, level, nCoeffs;
115  const uint16_t *quant_matrix;
116 
117  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
118  else qscale <<= 1;
119 
120  if(s->alternate_scan) nCoeffs= 63;
121  else nCoeffs= s->block_last_index[n];
122 
123  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
124  quant_matrix = s->intra_matrix;
125  for(i=1;i<=nCoeffs;i++) {
126  int j= s->intra_scantable.permutated[i];
127  level = block[j];
128  if (level) {
129  if (level < 0) {
130  level = -level;
131  level = (int)(level * qscale * quant_matrix[j]) >> 4;
132  level = -level;
133  } else {
134  level = (int)(level * qscale * quant_matrix[j]) >> 4;
135  }
136  block[j] = level;
137  }
138  }
139 }
140 
142  int16_t *block, int n, int qscale)
143 {
144  int i, level, nCoeffs;
145  const uint16_t *quant_matrix;
146  int sum=-1;
147 
148  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
149  else qscale <<= 1;
150 
151  if(s->alternate_scan) nCoeffs= 63;
152  else nCoeffs= s->block_last_index[n];
153 
154  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
155  sum += block[0];
156  quant_matrix = s->intra_matrix;
157  for(i=1;i<=nCoeffs;i++) {
158  int j= s->intra_scantable.permutated[i];
159  level = block[j];
160  if (level) {
161  if (level < 0) {
162  level = -level;
163  level = (int)(level * qscale * quant_matrix[j]) >> 4;
164  level = -level;
165  } else {
166  level = (int)(level * qscale * quant_matrix[j]) >> 4;
167  }
168  block[j] = level;
169  sum+=level;
170  }
171  }
172  block[63]^=sum&1;
173 }
174 
176  int16_t *block, int n, int qscale)
177 {
178  int i, level, nCoeffs;
179  const uint16_t *quant_matrix;
180  int sum=-1;
181 
182  if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
183  else qscale <<= 1;
184 
185  if(s->alternate_scan) nCoeffs= 63;
186  else nCoeffs= s->block_last_index[n];
187 
188  quant_matrix = s->inter_matrix;
189  for(i=0; i<=nCoeffs; i++) {
190  int j= s->intra_scantable.permutated[i];
191  level = block[j];
192  if (level) {
193  if (level < 0) {
194  level = -level;
195  level = (((level << 1) + 1) * qscale *
196  ((int) (quant_matrix[j]))) >> 5;
197  level = -level;
198  } else {
199  level = (((level << 1) + 1) * qscale *
200  ((int) (quant_matrix[j]))) >> 5;
201  }
202  block[j] = level;
203  sum+=level;
204  }
205  }
206  block[63]^=sum&1;
207 }
208 
210  int16_t *block, int n, int qscale)
211 {
212  int i, level, qmul, qadd;
213  int nCoeffs;
214 
215  av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
216 
217  qmul = qscale << 1;
218 
219  if (!s->h263_aic) {
220  block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
221  qadd = (qscale - 1) | 1;
222  }else{
223  qadd = 0;
224  }
225  if(s->ac_pred)
226  nCoeffs=63;
227  else
228  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
229 
230  for(i=1; i<=nCoeffs; i++) {
231  level = block[i];
232  if (level) {
233  if (level < 0) {
234  level = level * qmul - qadd;
235  } else {
236  level = level * qmul + qadd;
237  }
238  block[i] = level;
239  }
240  }
241 }
242 
244  int16_t *block, int n, int qscale)
245 {
246  int i, level, qmul, qadd;
247  int nCoeffs;
248 
249  av_assert2(s->block_last_index[n]>=0);
250 
251  qadd = (qscale - 1) | 1;
252  qmul = qscale << 1;
253 
254  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
255 
256  for(i=0; i<=nCoeffs; i++) {
257  level = block[i];
258  if (level) {
259  if (level < 0) {
260  level = level * qmul - qadd;
261  } else {
262  level = level * qmul + qadd;
263  }
264  block[i] = level;
265  }
266  }
267 }
268 
269 
270 static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
271 {
272  while(h--)
273  memset(dst + h*linesize, 128, 16);
274 }
275 
276 static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
277 {
278  while(h--)
279  memset(dst + h*linesize, 128, 8);
280 }
281 
282 /* init common dct for both encoder and decoder */
284 {
285  ff_blockdsp_init(&s->bdsp, s->avctx);
286  ff_h264chroma_init(&s->h264chroma, 8); //for lowres
287  ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
290 
291  if (s->avctx->debug & FF_DEBUG_NOMC) {
292  int i;
293  for (i=0; i<4; i++) {
294  s->hdsp.avg_pixels_tab[0][i] = gray16;
295  s->hdsp.put_pixels_tab[0][i] = gray16;
296  s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
297 
298  s->hdsp.avg_pixels_tab[1][i] = gray8;
299  s->hdsp.put_pixels_tab[1][i] = gray8;
300  s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
301  }
302  }
303 
312 
313  if (HAVE_INTRINSICS_NEON)
315 
316  if (ARCH_ALPHA)
318  if (ARCH_ARM)
320  if (ARCH_PPC)
322  if (ARCH_X86)
324  if (ARCH_MIPS)
326 
327  return 0;
328 }
329 
331 {
332  if (s->codec_id == AV_CODEC_ID_MPEG4)
334  ff_idctdsp_init(&s->idsp, s->avctx);
335 
336  /* load & permutate scantables
337  * note: only wmv uses different ones
338  */
339  if (s->alternate_scan) {
342  } else {
345  }
348 }
349 
350 static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
351 {
352  return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
354  s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
355  &s->linesize, &s->uvlinesize);
356 }
357 
359 {
360  int y_size = s->b8_stride * (2 * s->mb_height + 1);
361  int c_size = s->mb_stride * (s->mb_height + 1);
362  int yc_size = y_size + 2 * c_size;
363  int i;
364 
365  if (s->mb_height & 1)
366  yc_size += 2*s->b8_stride + 2*s->mb_stride;
367 
368  s->sc.edge_emu_buffer =
369  s->me.scratchpad =
370  s->me.temp =
371  s->sc.rd_scratchpad =
372  s->sc.b_scratchpad =
373  s->sc.obmc_scratchpad = NULL;
374 
375  if (s->encoding) {
376  FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
377  ME_MAP_SIZE * sizeof(uint32_t), fail)
379  ME_MAP_SIZE * sizeof(uint32_t), fail)
380  if (s->noise_reduction) {
382  2 * 64 * sizeof(int), fail)
383  }
384  }
385  FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
386  s->block = s->blocks[0];
387 
388  for (i = 0; i < 12; i++) {
389  s->pblocks[i] = &s->block[i];
390  }
391 
392  FF_ALLOCZ_OR_GOTO(s->avctx, s->block32, sizeof(*s->block32), fail)
393  s->dpcm_direction = 0;
395 
396  if (s->avctx->codec_tag == AV_RL32("VCR2")) {
397  // exchange uv
398  FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
399  }
400 
401  if (s->out_format == FMT_H263) {
402  /* ac values */
404  yc_size * sizeof(int16_t) * 16, fail);
405  s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
406  s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
407  s->ac_val[2] = s->ac_val[1] + c_size;
408  }
409 
410  return 0;
411 fail:
412  return -1; // free() through ff_mpv_common_end()
413 }
414 
416 {
417  if (!s)
418  return;
419 
421  av_freep(&s->me.scratchpad);
422  s->me.temp =
423  s->sc.rd_scratchpad =
424  s->sc.b_scratchpad =
425  s->sc.obmc_scratchpad = NULL;
426 
427  av_freep(&s->dct_error_sum);
428  av_freep(&s->me.map);
429  av_freep(&s->me.score_map);
430  av_freep(&s->blocks);
431  av_freep(&s->block32);
433  av_freep(&s->ac_val_base);
434  s->block = NULL;
435 }
436 
438 {
439 #define COPY(a) bak->a = src->a
440  COPY(sc.edge_emu_buffer);
441  COPY(me.scratchpad);
442  COPY(me.temp);
443  COPY(sc.rd_scratchpad);
444  COPY(sc.b_scratchpad);
445  COPY(sc.obmc_scratchpad);
446  COPY(me.map);
447  COPY(me.score_map);
448  COPY(blocks);
449  COPY(block);
450  COPY(block32);
451  COPY(dpcm_macroblock);
452  COPY(dpcm_direction);
453  COPY(start_mb_y);
454  COPY(end_mb_y);
455  COPY(me.map_generation);
456  COPY(pb);
457  COPY(dct_error_sum);
458  COPY(dct_count[0]);
459  COPY(dct_count[1]);
460  COPY(ac_val_base);
461  COPY(ac_val[0]);
462  COPY(ac_val[1]);
463  COPY(ac_val[2]);
464 #undef COPY
465 }
466 
468 {
469  MpegEncContext bak;
470  int i, ret;
471  // FIXME copy only needed parts
472  // START_TIMER
473  backup_duplicate_context(&bak, dst);
474  memcpy(dst, src, sizeof(MpegEncContext));
475  backup_duplicate_context(dst, &bak);
476  for (i = 0; i < 12; i++) {
477  dst->pblocks[i] = &dst->block[i];
478  }
479  if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
480  // exchange uv
481  FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
482  }
483  if (!dst->sc.edge_emu_buffer &&
484  (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
485  &dst->sc, dst->linesize)) < 0) {
486  av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
487  "scratch buffers.\n");
488  return ret;
489  }
490  // STOP_TIMER("update_duplicate_context")
491  // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
492  return 0;
493 }
494 
496  const AVCodecContext *src)
497 {
498  int i, ret;
499  MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
500 
501  if (dst == src)
502  return 0;
503 
504  av_assert0(s != s1);
505 
506  // FIXME can parameters change on I-frames?
507  // in that case dst may need a reinit
508  if (!s->context_initialized) {
509  int err;
510  memcpy(s, s1, sizeof(MpegEncContext));
511 
512  s->avctx = dst;
513  s->bitstream_buffer = NULL;
515 
516  if (s1->context_initialized){
517 // s->picture_range_start += MAX_PICTURE_COUNT;
518 // s->picture_range_end += MAX_PICTURE_COUNT;
519  ff_mpv_idct_init(s);
520  if((err = ff_mpv_common_init(s)) < 0){
521  memset(s, 0, sizeof(MpegEncContext));
522  s->avctx = dst;
523  return err;
524  }
525  }
526  }
527 
528  if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
529  s->context_reinit = 0;
530  s->height = s1->height;
531  s->width = s1->width;
532  if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
533  return ret;
534  }
535 
536  s->avctx->coded_height = s1->avctx->coded_height;
537  s->avctx->coded_width = s1->avctx->coded_width;
538  s->avctx->width = s1->avctx->width;
539  s->avctx->height = s1->avctx->height;
540 
541  s->coded_picture_number = s1->coded_picture_number;
542  s->picture_number = s1->picture_number;
543 
544  av_assert0(!s->picture || s->picture != s1->picture);
545  if(s->picture)
546  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
547  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
548  if (s1->picture && s1->picture[i].f->buf[0] &&
549  (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
550  return ret;
551  }
552 
553 #define UPDATE_PICTURE(pic)\
554 do {\
555  ff_mpeg_unref_picture(s->avctx, &s->pic);\
556  if (s1->pic.f && s1->pic.f->buf[0])\
557  ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
558  else\
559  ret = ff_update_picture_tables(&s->pic, &s1->pic);\
560  if (ret < 0)\
561  return ret;\
562 } while (0)
563 
564  UPDATE_PICTURE(current_picture);
566  UPDATE_PICTURE(next_picture);
567 
568 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
569  ((pic && pic >= old_ctx->picture && \
570  pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
571  &new_ctx->picture[pic - old_ctx->picture] : NULL)
572 
573  s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
574  s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
575  s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
576 
577  // Error/bug resilience
578  s->next_p_frame_damaged = s1->next_p_frame_damaged;
579  s->workaround_bugs = s1->workaround_bugs;
580  s->padding_bug_score = s1->padding_bug_score;
581 
582  // MPEG-4 timing info
583  memcpy(&s->last_time_base, &s1->last_time_base,
584  (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
585  (char *) &s1->last_time_base);
586 
587  // B-frame info
588  s->max_b_frames = s1->max_b_frames;
589  s->low_delay = s1->low_delay;
590  s->droppable = s1->droppable;
591 
592  // DivX handling (doesn't work)
593  s->divx_packed = s1->divx_packed;
594 
595  if (s1->bitstream_buffer) {
596  if (s1->bitstream_buffer_size +
600  s1->allocated_bitstream_buffer_size);
601  if (!s->bitstream_buffer) {
602  s->bitstream_buffer_size = 0;
603  return AVERROR(ENOMEM);
604  }
605  }
606  s->bitstream_buffer_size = s1->bitstream_buffer_size;
607  memcpy(s->bitstream_buffer, s1->bitstream_buffer,
608  s1->bitstream_buffer_size);
609  memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
611  }
612 
613  // linesize-dependent scratch buffer allocation
614  if (!s->sc.edge_emu_buffer)
615  if (s1->linesize) {
616  if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
617  &s->sc, s1->linesize) < 0) {
618  av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
619  "scratch buffers.\n");
620  return AVERROR(ENOMEM);
621  }
622  } else {
623  av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
624  "be allocated due to unknown size.\n");
625  }
626 
627  // MPEG-2/interlacing info
628  memcpy(&s->progressive_sequence, &s1->progressive_sequence,
629  (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
630 
631  if (!s1->first_field) {
632  s->last_pict_type = s1->pict_type;
633  if (s1->current_picture_ptr)
634  s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
635  }
636 
637  return 0;
638 }
639 
640 /**
641  * Set the given MpegEncContext to common defaults
642  * (same for encoding and decoding).
643  * The changed fields will not depend upon the
644  * prior state of the MpegEncContext.
645  */
647 {
648  s->y_dc_scale_table =
651  s->progressive_frame = 1;
652  s->progressive_sequence = 1;
654 
655  s->coded_picture_number = 0;
656  s->picture_number = 0;
657 
658  s->f_code = 1;
659  s->b_code = 1;
660 
661  s->slice_context_count = 1;
662 }
663 
664 /**
665  * Set the given MpegEncContext to defaults for decoding.
666  * the changed fields will not depend upon
667  * the prior state of the MpegEncContext.
668  */
670 {
672 }
673 
675 {
676  s->avctx = avctx;
677  s->width = avctx->coded_width;
678  s->height = avctx->coded_height;
679  s->codec_id = avctx->codec->id;
680  s->workaround_bugs = avctx->workaround_bugs;
681 
682  /* convert fourcc to upper case */
683  s->codec_tag = avpriv_toupper4(avctx->codec_tag);
684 }
685 
686 /**
687  * Initialize and allocates MpegEncContext fields dependent on the resolution.
688  */
690 {
691  int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
692 
693  s->mb_width = (s->width + 15) / 16;
694  s->mb_stride = s->mb_width + 1;
695  s->b8_stride = s->mb_width * 2 + 1;
696  mb_array_size = s->mb_height * s->mb_stride;
697  mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
698 
699  /* set default edge pos, will be overridden
700  * in decode_header if needed */
701  s->h_edge_pos = s->mb_width * 16;
702  s->v_edge_pos = s->mb_height * 16;
703 
704  s->mb_num = s->mb_width * s->mb_height;
705 
706  s->block_wrap[0] =
707  s->block_wrap[1] =
708  s->block_wrap[2] =
709  s->block_wrap[3] = s->b8_stride;
710  s->block_wrap[4] =
711  s->block_wrap[5] = s->mb_stride;
712 
713  y_size = s->b8_stride * (2 * s->mb_height + 1);
714  c_size = s->mb_stride * (s->mb_height + 1);
715  yc_size = y_size + 2 * c_size;
716 
717  if (s->mb_height & 1)
718  yc_size += 2*s->b8_stride + 2*s->mb_stride;
719 
720  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
721  fail); // error resilience code looks cleaner with this
722  for (y = 0; y < s->mb_height; y++)
723  for (x = 0; x < s->mb_width; x++)
724  s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
725 
726  s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
727 
728  if (s->encoding) {
729  /* Allocate MV tables */
730  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
731  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
732  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
733  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
734  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
735  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
736  s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
742 
743  /* Allocate MB type table */
744  FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
745 
746  FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
747 
749  mb_array_size * sizeof(float), fail);
751  mb_array_size * sizeof(float), fail);
752 
753  }
754 
755  if (s->codec_id == AV_CODEC_ID_MPEG4 ||
757  /* interlaced direct mode decoding tables */
758  for (i = 0; i < 2; i++) {
759  int j, k;
760  for (j = 0; j < 2; j++) {
761  for (k = 0; k < 2; k++) {
763  s->b_field_mv_table_base[i][j][k],
764  mv_table_size * 2 * sizeof(int16_t),
765  fail);
766  s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
767  s->mb_stride + 1;
768  }
769  FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
770  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
771  s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
772  }
773  FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
774  }
775  }
776  if (s->out_format == FMT_H263) {
777  /* cbp values */
778  FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
779  s->coded_block = s->coded_block_base + s->b8_stride + 1;
780 
781  /* cbp, ac_pred, pred_dir */
782  FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
783  FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
784  }
785 
786  if (s->h263_pred || s->h263_plus || !s->encoding) {
787  /* dc values */
788  // MN: we need these for error resilience of intra-frames
789  FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
790  s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
791  s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
792  s->dc_val[2] = s->dc_val[1] + c_size;
793  for (i = 0; i < yc_size; i++)
794  s->dc_val_base[i] = 1024;
795  }
796 
797  /* which mb is an intra block */
798  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
799  memset(s->mbintra_table, 1, mb_array_size);
800 
801  /* init macroblock skip table */
802  FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
803  // Note the + 1 is for a quicker MPEG-4 slice_end detection
804 
805  return ff_mpeg_er_init(s);
806 fail:
807  return AVERROR(ENOMEM);
808 }
809 
811 {
812  int i, j, k;
813 
814  memset(&s->next_picture, 0, sizeof(s->next_picture));
815  memset(&s->last_picture, 0, sizeof(s->last_picture));
816  memset(&s->current_picture, 0, sizeof(s->current_picture));
817  memset(&s->new_picture, 0, sizeof(s->new_picture));
818 
819  memset(s->thread_context, 0, sizeof(s->thread_context));
820 
821  s->me.map = NULL;
822  s->me.score_map = NULL;
823  s->dct_error_sum = NULL;
824  s->block = NULL;
825  s->blocks = NULL;
826  s->block32 = NULL;
827  memset(s->pblocks, 0, sizeof(s->pblocks));
828  s->dpcm_direction = 0;
829  s->dpcm_macroblock = NULL;
830  s->ac_val_base = NULL;
831  s->ac_val[0] =
832  s->ac_val[1] =
833  s->ac_val[2] =NULL;
834  s->sc.edge_emu_buffer = NULL;
835  s->me.scratchpad = NULL;
836  s->me.temp =
837  s->sc.rd_scratchpad =
838  s->sc.b_scratchpad =
839  s->sc.obmc_scratchpad = NULL;
840 
841 
842  s->bitstream_buffer = NULL;
844  s->picture = NULL;
845  s->mb_type = NULL;
846  s->p_mv_table_base = NULL;
852  s->p_mv_table = NULL;
853  s->b_forw_mv_table = NULL;
854  s->b_back_mv_table = NULL;
857  s->b_direct_mv_table = NULL;
858  for (i = 0; i < 2; i++) {
859  for (j = 0; j < 2; j++) {
860  for (k = 0; k < 2; k++) {
861  s->b_field_mv_table_base[i][j][k] = NULL;
862  s->b_field_mv_table[i][j][k] = NULL;
863  }
864  s->b_field_select_table[i][j] = NULL;
865  s->p_field_mv_table_base[i][j] = NULL;
866  s->p_field_mv_table[i][j] = NULL;
867  }
868  s->p_field_select_table[i] = NULL;
869  }
870 
871  s->dc_val_base = NULL;
872  s->coded_block_base = NULL;
873  s->mbintra_table = NULL;
874  s->cbp_table = NULL;
875  s->pred_dir_table = NULL;
876 
877  s->mbskip_table = NULL;
878 
880  s->er.er_temp_buffer = NULL;
881  s->mb_index2xy = NULL;
882  s->lambda_table = NULL;
883 
884  s->cplx_tab = NULL;
885  s->bits_tab = NULL;
886 }
887 
888 /**
889  * init common structure for both encoder and decoder.
890  * this assumes that some variables like width/height are already set
891  */
893 {
894  int i, ret;
895  int nb_slices = (HAVE_THREADS &&
897  s->avctx->thread_count : 1;
898 
899  clear_context(s);
900 
901  if (s->encoding && s->avctx->slices)
902  nb_slices = s->avctx->slices;
903 
905  s->mb_height = (s->height + 31) / 32 * 2;
906  else
907  s->mb_height = (s->height + 15) / 16;
908 
909  if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
911  "decoding to AV_PIX_FMT_NONE is not supported.\n");
912  return -1;
913  }
914 
915  if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
916  int max_slices;
917  if (s->mb_height)
918  max_slices = FFMIN(MAX_THREADS, s->mb_height);
919  else
920  max_slices = MAX_THREADS;
921  av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
922  " reducing to %d\n", nb_slices, max_slices);
923  nb_slices = max_slices;
924  }
925 
926  if ((s->width || s->height) &&
927  av_image_check_size(s->width, s->height, 0, s->avctx))
928  return -1;
929 
930  dct_init(s);
931 
932  /* set chroma shifts */
934  &s->chroma_x_shift,
935  &s->chroma_y_shift);
936  if (ret)
937  return ret;
938 
940  MAX_PICTURE_COUNT * sizeof(Picture), fail);
941  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
942  s->picture[i].f = av_frame_alloc();
943  if (!s->picture[i].f)
944  goto fail;
945  }
947  if (!s->next_picture.f)
948  goto fail;
950  if (!s->last_picture.f)
951  goto fail;
953  if (!s->current_picture.f)
954  goto fail;
956  if (!s->new_picture.f)
957  goto fail;
958 
959  if (init_context_frame(s))
960  goto fail;
961 
962  s->parse_context.state = -1;
963 
964  s->context_initialized = 1;
965  memset(s->thread_context, 0, sizeof(s->thread_context));
966  s->thread_context[0] = s;
967 
968 // if (s->width && s->height) {
969  if (nb_slices > 1) {
970  for (i = 0; i < nb_slices; i++) {
971  if (i) {
972  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
973  if (!s->thread_context[i])
974  goto fail;
975  }
976  if (init_duplicate_context(s->thread_context[i]) < 0)
977  goto fail;
978  s->thread_context[i]->start_mb_y =
979  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
980  s->thread_context[i]->end_mb_y =
981  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
982  }
983  } else {
984  if (init_duplicate_context(s) < 0)
985  goto fail;
986  s->start_mb_y = 0;
987  s->end_mb_y = s->mb_height;
988  }
989  s->slice_context_count = nb_slices;
990 // }
991 
992  return 0;
993  fail:
995  return -1;
996 }
997 
998 /**
999  * Frees and resets MpegEncContext fields depending on the resolution.
1000  * Is used during resolution changes to avoid a full reinitialization of the
1001  * codec.
1002  */
1004 {
1005  int i, j, k;
1006 
1007  av_freep(&s->mb_type);
1014  s->p_mv_table = NULL;
1015  s->b_forw_mv_table = NULL;
1016  s->b_back_mv_table = NULL;
1019  s->b_direct_mv_table = NULL;
1020  for (i = 0; i < 2; i++) {
1021  for (j = 0; j < 2; j++) {
1022  for (k = 0; k < 2; k++) {
1023  av_freep(&s->b_field_mv_table_base[i][j][k]);
1024  s->b_field_mv_table[i][j][k] = NULL;
1025  }
1026  av_freep(&s->b_field_select_table[i][j]);
1027  av_freep(&s->p_field_mv_table_base[i][j]);
1028  s->p_field_mv_table[i][j] = NULL;
1029  }
1031  }
1032 
1033  av_freep(&s->dc_val_base);
1035  av_freep(&s->mbintra_table);
1036  av_freep(&s->cbp_table);
1037  av_freep(&s->pred_dir_table);
1038 
1039  av_freep(&s->mbskip_table);
1040 
1042  av_freep(&s->er.er_temp_buffer);
1043  av_freep(&s->mb_index2xy);
1044  av_freep(&s->lambda_table);
1045 
1046  av_freep(&s->cplx_tab);
1047  av_freep(&s->bits_tab);
1048 
1049  s->linesize = s->uvlinesize = 0;
1050 }
1051 
1053 {
1054  int i, err = 0;
1055 
1056  if (!s->context_initialized)
1057  return AVERROR(EINVAL);
1058 
1059  if (s->slice_context_count > 1) {
1060  for (i = 0; i < s->slice_context_count; i++) {
1062  }
1063  for (i = 1; i < s->slice_context_count; i++) {
1064  av_freep(&s->thread_context[i]);
1065  }
1066  } else
1068 
1069  free_context_frame(s);
1070 
1071  if (s->picture)
1072  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1073  s->picture[i].needs_realloc = 1;
1074  }
1075 
1076  s->last_picture_ptr =
1077  s->next_picture_ptr =
1079 
1080  // init
1082  s->mb_height = (s->height + 31) / 32 * 2;
1083  else
1084  s->mb_height = (s->height + 15) / 16;
1085 
1086  if ((s->width || s->height) &&
1087  (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1088  goto fail;
1089 
1090  if ((err = init_context_frame(s)))
1091  goto fail;
1092 
1093  memset(s->thread_context, 0, sizeof(s->thread_context));
1094  s->thread_context[0] = s;
1095 
1096  if (s->width && s->height) {
1097  int nb_slices = s->slice_context_count;
1098  if (nb_slices > 1) {
1099  for (i = 0; i < nb_slices; i++) {
1100  if (i) {
1101  s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1102  if (!s->thread_context[i]) {
1103  err = AVERROR(ENOMEM);
1104  goto fail;
1105  }
1106  }
1107  if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1108  goto fail;
1109  s->thread_context[i]->start_mb_y =
1110  (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1111  s->thread_context[i]->end_mb_y =
1112  (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1113  }
1114  } else {
1115  err = init_duplicate_context(s);
1116  if (err < 0)
1117  goto fail;
1118  s->start_mb_y = 0;
1119  s->end_mb_y = s->mb_height;
1120  }
1121  s->slice_context_count = nb_slices;
1122  }
1123 
1124  return 0;
1125  fail:
1126  ff_mpv_common_end(s);
1127  return err;
1128 }
1129 
1130 /* init common structure for both encoder and decoder */
1132 {
1133  int i;
1134 
1135  if (!s)
1136  return ;
1137 
1138  if (s->slice_context_count > 1) {
1139  for (i = 0; i < s->slice_context_count; i++) {
1141  }
1142  for (i = 1; i < s->slice_context_count; i++) {
1143  av_freep(&s->thread_context[i]);
1144  }
1145  s->slice_context_count = 1;
1146  } else free_duplicate_context(s);
1147 
1149  s->parse_context.buffer_size = 0;
1150 
1153 
1154  if (s->picture) {
1155  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1157  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1158  av_frame_free(&s->picture[i].f);
1159  }
1160  }
1161  av_freep(&s->picture);
1174 
1175  free_context_frame(s);
1176 
1177  s->context_initialized = 0;
1178  s->last_picture_ptr =
1179  s->next_picture_ptr =
1181  s->linesize = s->uvlinesize = 0;
1182 }
1183 
1184 
1185 static void gray_frame(AVFrame *frame)
1186 {
1187  int i, h_chroma_shift, v_chroma_shift;
1188 
1189  av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1190 
1191  for(i=0; i<frame->height; i++)
1192  memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1193  for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1194  memset(frame->data[1] + frame->linesize[1]*i,
1195  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1196  memset(frame->data[2] + frame->linesize[2]*i,
1197  0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1198  }
1199 }
1200 
1201 /**
1202  * generic function called after decoding
1203  * the header and before a frame is decoded.
1204  */
1206 {
1207  int i, ret;
1208  Picture *pic;
1209  s->mb_skipped = 0;
1210 
1211  if (!ff_thread_can_start_frame(avctx)) {
1212  av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1213  return -1;
1214  }
1215 
1216  /* mark & release old frames */
1217  if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1219  s->last_picture_ptr->f->buf[0]) {
1221  }
1222 
1223  /* release forgotten pictures */
1224  /* if (MPEG-124 / H.263) */
1225  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1226  if (&s->picture[i] != s->last_picture_ptr &&
1227  &s->picture[i] != s->next_picture_ptr &&
1228  s->picture[i].reference && !s->picture[i].needs_realloc) {
1229  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1230  }
1231  }
1232 
1236 
1237  /* release non reference frames */
1238  for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1239  if (!s->picture[i].reference)
1240  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1241  }
1242 
1243  if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1244  // we already have an unused image
1245  // (maybe it was set before reading the header)
1246  pic = s->current_picture_ptr;
1247  } else {
1248  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1249  if (i < 0) {
1250  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1251  return i;
1252  }
1253  pic = &s->picture[i];
1254  }
1255 
1256  pic->reference = 0;
1257  if (!s->droppable) {
1258  if (s->pict_type != AV_PICTURE_TYPE_B)
1259  pic->reference = 3;
1260  }
1261 
1263 
1264  if (alloc_picture(s, pic, 0) < 0)
1265  return -1;
1266 
1267  s->current_picture_ptr = pic;
1268  // FIXME use only the vars from current_pic
1270  if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1272  if (s->picture_structure != PICT_FRAME)
1275  }
1279 
1281  // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1282  // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1284 
1285  if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1286  s->current_picture_ptr)) < 0)
1287  return ret;
1288 
1289  if (s->pict_type != AV_PICTURE_TYPE_B) {
1291  if (!s->droppable)
1293  }
1294  ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1296  s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1297  s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1299  s->pict_type, s->droppable);
1300 
1301  if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1302  (s->pict_type != AV_PICTURE_TYPE_I)) {
1303  int h_chroma_shift, v_chroma_shift;
1305  &h_chroma_shift, &v_chroma_shift);
1307  av_log(avctx, AV_LOG_DEBUG,
1308  "allocating dummy last picture for B frame\n");
1309  else if (s->pict_type != AV_PICTURE_TYPE_I)
1310  av_log(avctx, AV_LOG_ERROR,
1311  "warning: first frame is no keyframe\n");
1312 
1313  /* Allocate a dummy frame */
1314  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1315  if (i < 0) {
1316  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1317  return i;
1318  }
1319  s->last_picture_ptr = &s->picture[i];
1320 
1321  s->last_picture_ptr->reference = 3;
1322  s->last_picture_ptr->f->key_frame = 0;
1324 
1325  if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1326  s->last_picture_ptr = NULL;
1327  return -1;
1328  }
1329 
1330  if (!avctx->hwaccel) {
1331  for(i=0; i<avctx->height; i++)
1332  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1333  0x80, avctx->width);
1334  if (s->last_picture_ptr->f->data[2]) {
1335  for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1336  memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1337  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1338  memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1339  0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1340  }
1341  }
1342 
1344  for(i=0; i<avctx->height; i++)
1345  memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1346  }
1347  }
1348 
1349  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1350  ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1351  }
1352  if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1353  s->pict_type == AV_PICTURE_TYPE_B) {
1354  /* Allocate a dummy frame */
1355  i = ff_find_unused_picture(s->avctx, s->picture, 0);
1356  if (i < 0) {
1357  av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1358  return i;
1359  }
1360  s->next_picture_ptr = &s->picture[i];
1361 
1362  s->next_picture_ptr->reference = 3;
1363  s->next_picture_ptr->f->key_frame = 0;
1365 
1366  if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1367  s->next_picture_ptr = NULL;
1368  return -1;
1369  }
1370  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1371  ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1372  }
1373 
1374 #if 0 // BUFREF-FIXME
1375  memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1376  memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1377 #endif
1378  if (s->last_picture_ptr) {
1379  if (s->last_picture_ptr->f->buf[0] &&
1380  (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1381  s->last_picture_ptr)) < 0)
1382  return ret;
1383  }
1384  if (s->next_picture_ptr) {
1385  if (s->next_picture_ptr->f->buf[0] &&
1386  (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1387  s->next_picture_ptr)) < 0)
1388  return ret;
1389  }
1390 
1392  s->last_picture_ptr->f->buf[0]));
1393 
1394  if (s->picture_structure!= PICT_FRAME) {
1395  int i;
1396  for (i = 0; i < 4; i++) {
1398  s->current_picture.f->data[i] +=
1399  s->current_picture.f->linesize[i];
1400  }
1401  s->current_picture.f->linesize[i] *= 2;
1402  s->last_picture.f->linesize[i] *= 2;
1403  s->next_picture.f->linesize[i] *= 2;
1404  }
1405  }
1406 
1407  /* set dequantizer, we can't do it during init as
1408  * it might change for MPEG-4 and we can't do it in the header
1409  * decode as init is not called for MPEG-4 there yet */
1410  if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1413  } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1416  } else {
1419  }
1420 
1421  if (s->avctx->debug & FF_DEBUG_NOMC) {
1423  }
1424 
1425  return 0;
1426 }
1427 
1428 /* called after a frame has been decoded. */
1430 {
1431  emms_c();
1432 
1433  if (s->current_picture.reference)
1435 }
1436 
1438 {
1440  p->qscale_table, p->motion_val, &s->low_delay,
1441  s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1442 }
1443 
1445 {
1447  int offset = 2*s->mb_stride + 1;
1448  if(!ref)
1449  return AVERROR(ENOMEM);
1450  av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1451  ref->size -= offset;
1452  ref->data += offset;
1453  return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1454 }
1455 
1457  uint8_t *dest, uint8_t *src,
1458  int field_based, int field_select,
1459  int src_x, int src_y,
1460  int width, int height, ptrdiff_t stride,
1461  int h_edge_pos, int v_edge_pos,
1462  int w, int h, h264_chroma_mc_func *pix_op,
1463  int motion_x, int motion_y)
1464 {
1465  const int lowres = s->avctx->lowres;
1466  const int op_index = FFMIN(lowres, 3);
1467  const int s_mask = (2 << lowres) - 1;
1468  int emu = 0;
1469  int sx, sy;
1470 
1471  if (s->quarter_sample) {
1472  motion_x /= 2;
1473  motion_y /= 2;
1474  }
1475 
1476  sx = motion_x & s_mask;
1477  sy = motion_y & s_mask;
1478  src_x += motion_x >> lowres + 1;
1479  src_y += motion_y >> lowres + 1;
1480 
1481  src += src_y * stride + src_x;
1482 
1483  if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1484  (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1486  s->linesize, s->linesize,
1487  w + 1, (h + 1) << field_based,
1488  src_x, src_y << field_based,
1489  h_edge_pos, v_edge_pos);
1490  src = s->sc.edge_emu_buffer;
1491  emu = 1;
1492  }
1493 
1494  sx = (sx << 2) >> lowres;
1495  sy = (sy << 2) >> lowres;
1496  if (field_select)
1497  src += s->linesize;
1498  pix_op[op_index](dest, src, stride, h, sx, sy);
1499  return emu;
1500 }
1501 
1502 /* apply one mpeg motion vector to the three components */
1504  uint8_t *dest_y,
1505  uint8_t *dest_cb,
1506  uint8_t *dest_cr,
1507  int field_based,
1508  int bottom_field,
1509  int field_select,
1510  uint8_t **ref_picture,
1511  h264_chroma_mc_func *pix_op,
1512  int motion_x, int motion_y,
1513  int h, int mb_y)
1514 {
1515  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1516  int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1517  ptrdiff_t uvlinesize, linesize;
1518  const int lowres = s->avctx->lowres;
1519  const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1520  const int block_s = 8>>lowres;
1521  const int s_mask = (2 << lowres) - 1;
1522  const int h_edge_pos = s->h_edge_pos >> lowres;
1523  const int v_edge_pos = s->v_edge_pos >> lowres;
1524  linesize = s->current_picture.f->linesize[0] << field_based;
1525  uvlinesize = s->current_picture.f->linesize[1] << field_based;
1526 
1527  // FIXME obviously not perfect but qpel will not work in lowres anyway
1528  if (s->quarter_sample) {
1529  motion_x /= 2;
1530  motion_y /= 2;
1531  }
1532 
1533  if(field_based){
1534  motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1535  }
1536 
1537  sx = motion_x & s_mask;
1538  sy = motion_y & s_mask;
1539  src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1540  src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1541 
1542  if (s->out_format == FMT_H263) {
1543  uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1544  uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1545  uvsrc_x = src_x >> 1;
1546  uvsrc_y = src_y >> 1;
1547  } else if (s->out_format == FMT_H261) {
1548  // even chroma mv's are full pel in H261
1549  mx = motion_x / 4;
1550  my = motion_y / 4;
1551  uvsx = (2 * mx) & s_mask;
1552  uvsy = (2 * my) & s_mask;
1553  uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1554  uvsrc_y = mb_y * block_s + (my >> lowres);
1555  } else {
1556  if(s->chroma_y_shift){
1557  mx = motion_x / 2;
1558  my = motion_y / 2;
1559  uvsx = mx & s_mask;
1560  uvsy = my & s_mask;
1561  uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1562  uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1563  } else {
1564  if(s->chroma_x_shift){
1565  //Chroma422
1566  mx = motion_x / 2;
1567  uvsx = mx & s_mask;
1568  uvsy = motion_y & s_mask;
1569  uvsrc_y = src_y;
1570  uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1571  } else {
1572  //Chroma444
1573  uvsx = motion_x & s_mask;
1574  uvsy = motion_y & s_mask;
1575  uvsrc_x = src_x;
1576  uvsrc_y = src_y;
1577  }
1578  }
1579  }
1580 
1581  ptr_y = ref_picture[0] + src_y * linesize + src_x;
1582  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1583  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1584 
1585  if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1586  (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1587  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1588  linesize >> field_based, linesize >> field_based,
1589  17, 17 + field_based,
1590  src_x, src_y << field_based, h_edge_pos,
1591  v_edge_pos);
1592  ptr_y = s->sc.edge_emu_buffer;
1593  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1594  uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1595  uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1596  if (s->workaround_bugs & FF_BUG_IEDGE)
1597  vbuf -= s->uvlinesize;
1598  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1599  uvlinesize >> field_based, uvlinesize >> field_based,
1600  9, 9 + field_based,
1601  uvsrc_x, uvsrc_y << field_based,
1602  h_edge_pos >> 1, v_edge_pos >> 1);
1603  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1604  uvlinesize >> field_based,uvlinesize >> field_based,
1605  9, 9 + field_based,
1606  uvsrc_x, uvsrc_y << field_based,
1607  h_edge_pos >> 1, v_edge_pos >> 1);
1608  ptr_cb = ubuf;
1609  ptr_cr = vbuf;
1610  }
1611  }
1612 
1613  // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1614  if (bottom_field) {
1615  dest_y += s->linesize;
1616  dest_cb += s->uvlinesize;
1617  dest_cr += s->uvlinesize;
1618  }
1619 
1620  if (field_select) {
1621  ptr_y += s->linesize;
1622  ptr_cb += s->uvlinesize;
1623  ptr_cr += s->uvlinesize;
1624  }
1625 
1626  sx = (sx << 2) >> lowres;
1627  sy = (sy << 2) >> lowres;
1628  pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1629 
1630  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1631  int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1632  uvsx = (uvsx << 2) >> lowres;
1633  uvsy = (uvsy << 2) >> lowres;
1634  if (hc) {
1635  pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1636  pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1637  }
1638  }
1639  // FIXME h261 lowres loop filter
1640 }
1641 
1643  uint8_t *dest_cb, uint8_t *dest_cr,
1644  uint8_t **ref_picture,
1645  h264_chroma_mc_func * pix_op,
1646  int mx, int my)
1647 {
1648  const int lowres = s->avctx->lowres;
1649  const int op_index = FFMIN(lowres, 3);
1650  const int block_s = 8 >> lowres;
1651  const int s_mask = (2 << lowres) - 1;
1652  const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1653  const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1654  int emu = 0, src_x, src_y, sx, sy;
1655  ptrdiff_t offset;
1656  uint8_t *ptr;
1657 
1658  if (s->quarter_sample) {
1659  mx /= 2;
1660  my /= 2;
1661  }
1662 
1663  /* In case of 8X8, we construct a single chroma motion vector
1664  with a special rounding */
1665  mx = ff_h263_round_chroma(mx);
1666  my = ff_h263_round_chroma(my);
1667 
1668  sx = mx & s_mask;
1669  sy = my & s_mask;
1670  src_x = s->mb_x * block_s + (mx >> lowres + 1);
1671  src_y = s->mb_y * block_s + (my >> lowres + 1);
1672 
1673  offset = src_y * s->uvlinesize + src_x;
1674  ptr = ref_picture[1] + offset;
1675  if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1676  (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1678  s->uvlinesize, s->uvlinesize,
1679  9, 9,
1680  src_x, src_y, h_edge_pos, v_edge_pos);
1681  ptr = s->sc.edge_emu_buffer;
1682  emu = 1;
1683  }
1684  sx = (sx << 2) >> lowres;
1685  sy = (sy << 2) >> lowres;
1686  pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1687 
1688  ptr = ref_picture[2] + offset;
1689  if (emu) {
1691  s->uvlinesize, s->uvlinesize,
1692  9, 9,
1693  src_x, src_y, h_edge_pos, v_edge_pos);
1694  ptr = s->sc.edge_emu_buffer;
1695  }
1696  pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1697 }
1698 
1699 /**
1700  * motion compensation of a single macroblock
1701  * @param s context
1702  * @param dest_y luma destination pointer
1703  * @param dest_cb chroma cb/u destination pointer
1704  * @param dest_cr chroma cr/v destination pointer
1705  * @param dir direction (0->forward, 1->backward)
1706  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
1707  * @param pix_op halfpel motion compensation function (average or put normally)
1708  * the motion vectors are taken from s->mv and the MV type from s->mv_type
1709  */
1710 static inline void MPV_motion_lowres(MpegEncContext *s,
1711  uint8_t *dest_y, uint8_t *dest_cb,
1712  uint8_t *dest_cr,
1713  int dir, uint8_t **ref_picture,
1714  h264_chroma_mc_func *pix_op)
1715 {
1716  int mx, my;
1717  int mb_x, mb_y, i;
1718  const int lowres = s->avctx->lowres;
1719  const int block_s = 8 >>lowres;
1720 
1721  mb_x = s->mb_x;
1722  mb_y = s->mb_y;
1723 
1724  switch (s->mv_type) {
1725  case MV_TYPE_16X16:
1726  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1727  0, 0, 0,
1728  ref_picture, pix_op,
1729  s->mv[dir][0][0], s->mv[dir][0][1],
1730  2 * block_s, mb_y);
1731  break;
1732  case MV_TYPE_8X8:
1733  mx = 0;
1734  my = 0;
1735  for (i = 0; i < 4; i++) {
1736  hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
1737  s->linesize) * block_s,
1738  ref_picture[0], 0, 0,
1739  (2 * mb_x + (i & 1)) * block_s,
1740  (2 * mb_y + (i >> 1)) * block_s,
1741  s->width, s->height, s->linesize,
1742  s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
1743  block_s, block_s, pix_op,
1744  s->mv[dir][i][0], s->mv[dir][i][1]);
1745 
1746  mx += s->mv[dir][i][0];
1747  my += s->mv[dir][i][1];
1748  }
1749 
1750  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
1751  chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
1752  pix_op, mx, my);
1753  break;
1754  case MV_TYPE_FIELD:
1755  if (s->picture_structure == PICT_FRAME) {
1756  /* top field */
1757  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1758  1, 0, s->field_select[dir][0],
1759  ref_picture, pix_op,
1760  s->mv[dir][0][0], s->mv[dir][0][1],
1761  block_s, mb_y);
1762  /* bottom field */
1763  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1764  1, 1, s->field_select[dir][1],
1765  ref_picture, pix_op,
1766  s->mv[dir][1][0], s->mv[dir][1][1],
1767  block_s, mb_y);
1768  } else {
1769  if (s->picture_structure != s->field_select[dir][0] + 1 &&
1770  s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
1771  ref_picture = s->current_picture_ptr->f->data;
1772 
1773  }
1774  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1775  0, 0, s->field_select[dir][0],
1776  ref_picture, pix_op,
1777  s->mv[dir][0][0],
1778  s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
1779  }
1780  break;
1781  case MV_TYPE_16X8:
1782  for (i = 0; i < 2; i++) {
1783  uint8_t **ref2picture;
1784 
1785  if (s->picture_structure == s->field_select[dir][i] + 1 ||
1786  s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
1787  ref2picture = ref_picture;
1788  } else {
1789  ref2picture = s->current_picture_ptr->f->data;
1790  }
1791 
1792  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1793  0, 0, s->field_select[dir][i],
1794  ref2picture, pix_op,
1795  s->mv[dir][i][0], s->mv[dir][i][1] +
1796  2 * block_s * i, block_s, mb_y >> 1);
1797 
1798  dest_y += 2 * block_s * s->linesize;
1799  dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1800  dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
1801  }
1802  break;
1803  case MV_TYPE_DMV:
1804  if (s->picture_structure == PICT_FRAME) {
1805  for (i = 0; i < 2; i++) {
1806  int j;
1807  for (j = 0; j < 2; j++) {
1808  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1809  1, j, j ^ i,
1810  ref_picture, pix_op,
1811  s->mv[dir][2 * i + j][0],
1812  s->mv[dir][2 * i + j][1],
1813  block_s, mb_y);
1814  }
1816  }
1817  } else {
1818  for (i = 0; i < 2; i++) {
1819  mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
1820  0, 0, s->picture_structure != i + 1,
1821  ref_picture, pix_op,
1822  s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
1823  2 * block_s, mb_y >> 1);
1824 
1825  // after put we make avg of the same block
1827 
1828  // opposite parity is always in the same
1829  // frame if this is second field
1830  if (!s->first_field) {
1831  ref_picture = s->current_picture_ptr->f->data;
1832  }
1833  }
1834  }
1835  break;
1836  default:
1837  av_assert2(0);
1838  }
1839 }
1840 
1841 /**
1842  * find the lowest MB row referenced in the MVs
1843  */
1845 {
1846  int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
1847  int my, off, i, mvs;
1848 
1849  if (s->picture_structure != PICT_FRAME || s->mcsel)
1850  goto unhandled;
1851 
1852  switch (s->mv_type) {
1853  case MV_TYPE_16X16:
1854  mvs = 1;
1855  break;
1856  case MV_TYPE_16X8:
1857  mvs = 2;
1858  break;
1859  case MV_TYPE_8X8:
1860  mvs = 4;
1861  break;
1862  default:
1863  goto unhandled;
1864  }
1865 
1866  for (i = 0; i < mvs; i++) {
1867  my = s->mv[dir][i][1];
1868  my_max = FFMAX(my_max, my);
1869  my_min = FFMIN(my_min, my);
1870  }
1871 
1872  off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
1873 
1874  return av_clip(s->mb_y + off, 0, s->mb_height - 1);
1875 unhandled:
1876  return s->mb_height-1;
1877 }
1878 
1879 /* put block[] to dest[] */
1880 static inline void put_dct(MpegEncContext *s,
1881  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1882 {
1883  s->dct_unquantize_intra(s, block, i, qscale);
1884  s->idsp.idct_put(dest, line_size, block);
1885 }
1886 
1887 /* add block[] to dest[] */
1888 static inline void add_dct(MpegEncContext *s,
1889  int16_t *block, int i, uint8_t *dest, int line_size)
1890 {
1891  if (s->block_last_index[i] >= 0) {
1892  s->idsp.idct_add(dest, line_size, block);
1893  }
1894 }
1895 
1896 static inline void add_dequant_dct(MpegEncContext *s,
1897  int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
1898 {
1899  if (s->block_last_index[i] >= 0) {
1900  s->dct_unquantize_inter(s, block, i, qscale);
1901 
1902  s->idsp.idct_add(dest, line_size, block);
1903  }
1904 }
1905 
1906 /**
1907  * Clean dc, ac, coded_block for the current non-intra MB.
1908  */
1910 {
1911  int wrap = s->b8_stride;
1912  int xy = s->block_index[0];
1913 
1914  s->dc_val[0][xy ] =
1915  s->dc_val[0][xy + 1 ] =
1916  s->dc_val[0][xy + wrap] =
1917  s->dc_val[0][xy + 1 + wrap] = 1024;
1918  /* ac pred */
1919  memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
1920  memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
1921  if (s->msmpeg4_version>=3) {
1922  s->coded_block[xy ] =
1923  s->coded_block[xy + 1 ] =
1924  s->coded_block[xy + wrap] =
1925  s->coded_block[xy + 1 + wrap] = 0;
1926  }
1927  /* chroma */
1928  wrap = s->mb_stride;
1929  xy = s->mb_x + s->mb_y * wrap;
1930  s->dc_val[1][xy] =
1931  s->dc_val[2][xy] = 1024;
1932  /* ac pred */
1933  memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
1934  memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
1935 
1936  s->mbintra_table[xy]= 0;
1937 }
1938 
1939 /* generic function called after a macroblock has been parsed by the
1940  decoder or after it has been encoded by the encoder.
1941 
1942  Important variables used:
1943  s->mb_intra : true if intra macroblock
1944  s->mv_dir : motion vector direction
1945  s->mv_type : motion vector type
1946  s->mv : motion vector
1947  s->interlaced_dct : true if interlaced dct used (mpeg2)
1948  */
1949 static av_always_inline
1951  int lowres_flag, int is_mpeg12)
1952 {
1953  const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
1954 
1955  if (CONFIG_XVMC &&
1956  s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
1957  s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
1958  return;
1959  }
1960 
1961  if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
1962  /* print DCT coefficients */
1963  int i,j;
1964  av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1965  for(i=0; i<6; i++){
1966  for(j=0; j<64; j++){
1967  av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1968  block[i][s->idsp.idct_permutation[j]]);
1969  }
1970  av_log(s->avctx, AV_LOG_DEBUG, "\n");
1971  }
1972  }
1973 
1974  s->current_picture.qscale_table[mb_xy] = s->qscale;
1975 
1976  /* update DC predictors for P macroblocks */
1977  if (!s->mb_intra) {
1978  if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
1979  if(s->mbintra_table[mb_xy])
1981  } else {
1982  s->last_dc[0] =
1983  s->last_dc[1] =
1984  s->last_dc[2] = 128 << s->intra_dc_precision;
1985  }
1986  }
1987  else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
1988  s->mbintra_table[mb_xy]=1;
1989 
1991  !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
1992  s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
1993  uint8_t *dest_y, *dest_cb, *dest_cr;
1994  int dct_linesize, dct_offset;
1995  op_pixels_func (*op_pix)[4];
1996  qpel_mc_func (*op_qpix)[16];
1997  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
1998  const int uvlinesize = s->current_picture.f->linesize[1];
1999  const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
2000  const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
2001 
2002  /* avoid copy if macroblock skipped in last frame too */
2003  /* skip only during decoding as we might trash the buffers during encoding a bit */
2004  if(!s->encoding){
2005  uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2006 
2007  if (s->mb_skipped) {
2008  s->mb_skipped= 0;
2010  *mbskip_ptr = 1;
2011  } else if(!s->current_picture.reference) {
2012  *mbskip_ptr = 1;
2013  } else{
2014  *mbskip_ptr = 0; /* not skipped */
2015  }
2016  }
2017 
2018  dct_linesize = linesize << s->interlaced_dct;
2019  dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2020 
2021  if(readable){
2022  dest_y= s->dest[0];
2023  dest_cb= s->dest[1];
2024  dest_cr= s->dest[2];
2025  }else{
2026  dest_y = s->sc.b_scratchpad;
2027  dest_cb= s->sc.b_scratchpad+16*linesize;
2028  dest_cr= s->sc.b_scratchpad+32*linesize;
2029  }
2030 
2031  if (!s->mb_intra) {
2032  /* motion handling */
2033  /* decoding or more than one mb_type (MC was already done otherwise) */
2034  if(!s->encoding){
2035 
2036  if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2037  if (s->mv_dir & MV_DIR_FORWARD) {
2039  lowest_referenced_row(s, 0),
2040  0);
2041  }
2042  if (s->mv_dir & MV_DIR_BACKWARD) {
2044  lowest_referenced_row(s, 1),
2045  0);
2046  }
2047  }
2048 
2049  if(lowres_flag){
2051 
2052  if (s->mv_dir & MV_DIR_FORWARD) {
2053  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2055  }
2056  if (s->mv_dir & MV_DIR_BACKWARD) {
2057  MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2058  }
2059  }else{
2060  op_qpix = s->me.qpel_put;
2061  if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2062  op_pix = s->hdsp.put_pixels_tab;
2063  }else{
2064  op_pix = s->hdsp.put_no_rnd_pixels_tab;
2065  }
2066  if (s->mv_dir & MV_DIR_FORWARD) {
2067  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2068  op_pix = s->hdsp.avg_pixels_tab;
2069  op_qpix= s->me.qpel_avg;
2070  }
2071  if (s->mv_dir & MV_DIR_BACKWARD) {
2072  ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2073  }
2074  }
2075  }
2076 
2077  /* skip dequant / idct if we are really late ;) */
2078  if(s->avctx->skip_idct){
2081  || s->avctx->skip_idct >= AVDISCARD_ALL)
2082  goto skip_idct;
2083  }
2084 
2085  /* add dct residue */
2087  || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2088  add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2089  add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2090  add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2091  add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2092 
2093  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2094  if (s->chroma_y_shift){
2095  add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2096  add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2097  }else{
2098  dct_linesize >>= 1;
2099  dct_offset >>=1;
2100  add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2101  add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2102  add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2103  add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2104  }
2105  }
2106  } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2107  add_dct(s, block[0], 0, dest_y , dct_linesize);
2108  add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2109  add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2110  add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2111 
2112  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2113  if(s->chroma_y_shift){//Chroma420
2114  add_dct(s, block[4], 4, dest_cb, uvlinesize);
2115  add_dct(s, block[5], 5, dest_cr, uvlinesize);
2116  }else{
2117  //chroma422
2118  dct_linesize = uvlinesize << s->interlaced_dct;
2119  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2120 
2121  add_dct(s, block[4], 4, dest_cb, dct_linesize);
2122  add_dct(s, block[5], 5, dest_cr, dct_linesize);
2123  add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2124  add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2125  if(!s->chroma_x_shift){//Chroma444
2126  add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2127  add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2128  add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2129  add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2130  }
2131  }
2132  }//fi gray
2133  }
2134  else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2135  ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2136  }
2137  } else {
2138  /* Only MPEG-4 Simple Studio Profile is supported in > 8-bit mode.
2139  TODO: Integrate 10-bit properly into mpegvideo.c so that ER works properly */
2140  if (s->avctx->bits_per_raw_sample > 8){
2141  const int act_block_size = block_size * 2;
2142 
2143  if(s->dpcm_direction == 0) {
2144  s->idsp.idct_put(dest_y, dct_linesize, (int16_t*)(*s->block32)[0]);
2145  s->idsp.idct_put(dest_y + act_block_size, dct_linesize, (int16_t*)(*s->block32)[1]);
2146  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, (int16_t*)(*s->block32)[2]);
2147  s->idsp.idct_put(dest_y + dct_offset + act_block_size, dct_linesize, (int16_t*)(*s->block32)[3]);
2148 
2149  dct_linesize = uvlinesize << s->interlaced_dct;
2150  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2151 
2152  s->idsp.idct_put(dest_cb, dct_linesize, (int16_t*)(*s->block32)[4]);
2153  s->idsp.idct_put(dest_cr, dct_linesize, (int16_t*)(*s->block32)[5]);
2154  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, (int16_t*)(*s->block32)[6]);
2155  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, (int16_t*)(*s->block32)[7]);
2156  if(!s->chroma_x_shift){//Chroma444
2157  s->idsp.idct_put(dest_cb + act_block_size, dct_linesize, (int16_t*)(*s->block32)[8]);
2158  s->idsp.idct_put(dest_cr + act_block_size, dct_linesize, (int16_t*)(*s->block32)[9]);
2159  s->idsp.idct_put(dest_cb + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[10]);
2160  s->idsp.idct_put(dest_cr + act_block_size + dct_offset, dct_linesize, (int16_t*)(*s->block32)[11]);
2161  }
2162  } else if(s->dpcm_direction == 1) {
2163  int i, w, h;
2164  uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2165  int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2166  for(i = 0; i < 3; i++) {
2167  int idx = 0;
2168  int vsub = i ? s->chroma_y_shift : 0;
2169  int hsub = i ? s->chroma_x_shift : 0;
2170  for(h = 0; h < (16 >> vsub); h++){
2171  for(w = 0; w < (16 >> hsub); w++)
2172  dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2173  dest_pcm[i] += linesize[i] / 2;
2174  }
2175  }
2176  } else if(s->dpcm_direction == -1) {
2177  int i, w, h;
2178  uint16_t *dest_pcm[3] = {(uint16_t*)dest_y, (uint16_t*)dest_cb, (uint16_t*)dest_cr};
2179  int linesize[3] = {dct_linesize, uvlinesize, uvlinesize};
2180  for(i = 0; i < 3; i++) {
2181  int idx = 0;
2182  int vsub = i ? s->chroma_y_shift : 0;
2183  int hsub = i ? s->chroma_x_shift : 0;
2184  dest_pcm[i] += (linesize[i] / 2) * ((16 >> vsub) - 1);
2185  for(h = (16 >> vsub)-1; h >= 1; h--){
2186  for(w = (16 >> hsub)-1; w >= 1; w--)
2187  dest_pcm[i][w] = (*s->dpcm_macroblock)[i][idx++];
2188  dest_pcm[i] -= linesize[i] / 2;
2189  }
2190  }
2191  }
2192  }
2193  /* dct only in intra block */
2195  put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2196  put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2197  put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2198  put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2199 
2200  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2201  if(s->chroma_y_shift){
2202  put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2203  put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2204  }else{
2205  dct_offset >>=1;
2206  dct_linesize >>=1;
2207  put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2208  put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2209  put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2210  put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2211  }
2212  }
2213  }else{
2214  s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2215  s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2216  s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2217  s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2218 
2219  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2220  if(s->chroma_y_shift){
2221  s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2222  s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2223  }else{
2224 
2225  dct_linesize = uvlinesize << s->interlaced_dct;
2226  dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2227 
2228  s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2229  s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2230  s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2231  s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2232  if(!s->chroma_x_shift){//Chroma444
2233  s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2234  s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2235  s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2236  s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2237  }
2238  }
2239  }//gray
2240  }
2241  }
2242 skip_idct:
2243  if(!readable){
2244  s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2245  if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2246  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2247  s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2248  }
2249  }
2250  }
2251 }
2252 
2253 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
2254 {
2255 #if !CONFIG_SMALL
2256  if(s->out_format == FMT_MPEG1) {
2257  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2258  else mpv_reconstruct_mb_internal(s, block, 0, 1);
2259  } else
2260 #endif
2261  if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2262  else mpv_reconstruct_mb_internal(s, block, 0, 0);
2263 }
2264 
2266 {
2269  s->first_field, s->low_delay);
2270 }
2271 
2272 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2273  const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2274  const int uvlinesize = s->current_picture.f->linesize[1];
2275  const int width_of_mb = (4 + (s->avctx->bits_per_raw_sample > 8)) - s->avctx->lowres;
2276  const int height_of_mb = 4 - s->avctx->lowres;
2277 
2278  s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2279  s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2280  s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2281  s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2282  s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2283  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;
2284  //block_index is not used by mpeg2, so it is not affected by chroma_format
2285 
2286  s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << width_of_mb);
2287  s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2288  s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (width_of_mb - s->chroma_x_shift));
2289 
2291  {
2292  if(s->picture_structure==PICT_FRAME){
2293  s->dest[0] += s->mb_y * linesize << height_of_mb;
2294  s->dest[1] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2295  s->dest[2] += s->mb_y * uvlinesize << (height_of_mb - s->chroma_y_shift);
2296  }else{
2297  s->dest[0] += (s->mb_y>>1) * linesize << height_of_mb;
2298  s->dest[1] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2299  s->dest[2] += (s->mb_y>>1) * uvlinesize << (height_of_mb - s->chroma_y_shift);
2301  }
2302  }
2303 }
2304 
2306  int i;
2307  MpegEncContext *s = avctx->priv_data;
2308 
2309  if (!s || !s->picture)
2310  return;
2311 
2312  for (i = 0; i < MAX_PICTURE_COUNT; i++)
2313  ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2315 
2319 
2320  s->mb_x= s->mb_y= 0;
2321  s->closed_gop= 0;
2322 
2323  s->parse_context.state= -1;
2325  s->parse_context.overread= 0;
2327  s->parse_context.index= 0;
2328  s->parse_context.last_index= 0;
2329  s->bitstream_buffer_size=0;
2330  s->pp_time=0;
2331 }
2332 
2333 /**
2334  * set qscale and update qscale dependent variables.
2335  */
2336 void ff_set_qscale(MpegEncContext * s, int qscale)
2337 {
2338  if (qscale < 1)
2339  qscale = 1;
2340  else if (qscale > 31)
2341  qscale = 31;
2342 
2343  s->qscale = qscale;
2344  s->chroma_qscale= s->chroma_qscale_table[qscale];
2345 
2346  s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2348 }
2349 
2351 {
2354 }
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:903
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
Definition: frame.c:54
IDCTDSPContext idsp
Definition: mpegvideo.h:230
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:38
#define NULL
Definition: coverity.c:32
static int init_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:358
int ff_thread_can_start_frame(AVCodecContext *avctx)
const struct AVCodec * codec
Definition: avcodec.h:1541
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:801
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2272
int picture_number
Definition: mpegvideo.h:127
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:83
av_cold void ff_mpv_common_init_neon(MpegEncContext *s)
Definition: mpegvideo.c:126
ScanTable intra_v_scantable
Definition: mpegvideo.h:93
av_cold void ff_mpegvideodsp_init(MpegVideoDSPContext *c)
Definition: mpegvideodsp.c:110
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:534
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:248
int dpcm_direction
Definition: mpegvideo.h:512
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:153
#define MV_TYPE_FIELD
2 vectors, one per field
Definition: mpegvideo.h:269
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:188
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegpicture.h:36
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1720
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:1950
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:1642
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:1185
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:1742
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:254
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:240
int studio_profile
Definition: mpegvideo.h:384
uint8_t raster_end[64]
Definition: idctdsp.h:34
static int lowest_referenced_row(MpegEncContext *s, int dir)
find the lowest MB row referenced in the MVs
Definition: mpegvideo.c:1844
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:802
uint8_t permutated[64]
Definition: idctdsp.h:33
static void free_duplicate_context(MpegEncContext *s)
Definition: mpegvideo.c:415
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2756
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:2689
#define src
Definition: vp8dsp.c:254
void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last, int y, int h, int picture_structure, int first_field, int low_delay)
Draw a horizontal band if supported.
Definition: mpegutils.c:51
int frame_start_found
Definition: parser.h:34
int qscale
QP.
Definition: mpegvideo.h:204
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:87
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:250
enum AVPictureType last_picture
Definition: movenc.c:68
int chroma_x_shift
Definition: mpegvideo.h:485
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:114
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:528
int field_select[2][2]
Definition: mpegvideo.h:277
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:532
int block_wrap[6]
Definition: mpegvideo.h:294
static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:82
Macro definitions for various function/variable attributes.
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:242
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
Definition: mpegvideo.c:437
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:1909
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:530
const uint8_t ff_mpeg2_non_linear_qscale[32]
Definition: mpegvideodata.c:27
static int16_t block[64]
Definition: dct.c:115
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2265
void(* emulated_edge_mc)(uint8_t *dst, const uint8_t *src, ptrdiff_t dst_linesize, ptrdiff_t src_linesize, int block_w, int block_h, int src_x, int src_y, int w, int h)
Copy a rectangular area of samples to a temporary buffer and replicate the border samples...
Definition: videodsp.h:63
int context_reinit
Definition: mpegvideo.h:563
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:34
int16_t * dc_val_base
Definition: mpegvideo.h:186
ScratchpadContext sc
Definition: mpegvideo.h:202
uint8_t
#define ME_MAP_SIZE
Definition: motion_est.h:38
#define av_cold
Definition: attributes.h:82
av_cold void ff_mpv_common_init_axp(MpegEncContext *s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
enum OutputFormat out_format
output format
Definition: mpegvideo.h:104
#define f(width, name)
Definition: cbs_vp9.c:255
int ff_mpv_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1052
int noise_reduction
Definition: mpegvideo.h:581
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:200
Multithreading support functions.
int frame_skip_threshold
Definition: mpegvideo.h:575
qpel_mc_func(* qpel_put)[16]
Definition: motion_est.h:91
void ff_free_picture_tables(Picture *pic)
Definition: mpegpicture.c:460
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
int interlaced_dct
Definition: mpegvideo.h:490
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Definition: mpegpicture.c:446
int intra_dc_precision
Definition: mpegvideo.h:463
static AVFrame * frame
quarterpel DSP functions
void ff_mpv_common_init_ppc(MpegEncContext *s)
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
#define height
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:251
float * cplx_tab
Definition: mpegvideo.h:559
#define ff_dlog(a,...)
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3712
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:392
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Definition: mpegvideo.c:350
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h: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:2764
int mpeg4_studio_profile
Definition: idctdsp.h:99
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:120
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:869
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:2577
#define av_log(a,...)
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:2336
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:3437
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:1888
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:2434
ERContext er
Definition: mpegvideo.h:565
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2803
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:219
int reference
Definition: mpegpicture.h:87
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:141
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:526
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:520
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1612
#define wrap(func)
Definition: neontest.h:65
static void put_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
Definition: mpegvideo.c:1880
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:1131
#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:2305
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:1767
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:1444
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:894
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:2795
uint8_t * er_temp_buffer
int overread
the number of bytes which where irreversibly read from the next frame
Definition: parser.h:35
#define FFMIN(a, b)
Definition: common.h:96
int last_index
Definition: parser.h:31
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed B-frames
Definition: mpegvideo.h:360
static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.c:175
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:174
#define width
int width
picture width / height.
Definition: avcodec.h:1705
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:873
#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:2796
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:247
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:241
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:505
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
MotionEstContext me
Definition: mpegvideo.h:282
int frame_skip_factor
Definition: mpegvideo.h:576
int n
Definition: avisynth_c.h:684
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:96
av_cold void ff_mpv_common_init_mips(MpegEncContext *s)
int mb_decision
macroblock decision mode
Definition: avcodec.h:2020
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:198
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegutils.c:103
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: mpegvideo.c:495
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:220
void ff_mpv_decode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for decoding.
Definition: mpegvideo.c:669
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2784
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:810
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:2983
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:2613
main external API structure.
Definition: avcodec.h:1532
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:1557
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:1437
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:1720
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:1785
#define FF_DEBUG_DCT_COEFF
Definition: avcodec.h:2625
struct AVFrame * f
Definition: mpegpicture.h:46
#define FF_MB_DECISION_RD
rate distortion
Definition: avcodec.h:2023
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:1205
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:689
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:798
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:674
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:2562
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
Definition: mpegpicture.h:39
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (H.263)
Definition: mpegvideo.h:190
const uint8_t ff_alternate_vertical_scan[64]
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
Definition: mpegvideo.c:467
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:522
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:781
static int lowres
Definition: ffplay.c:332
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:2179
void * priv_data
Definition: avcodec.h:1559
#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:892
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:1429
#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:2253
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:1896
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:2638
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:1503
int chroma_qscale
chroma QP
Definition: mpegvideo.h:205
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:524
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:646
static void free_context_frame(MpegEncContext *s)
Frees and resets MpegEncContext fields depending on the resolution.
Definition: mpegvideo.c:1003
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:1456
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)
int16_t(* dpcm_macroblock)[3][256]
Definition: mpegvideo.h:513
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:119
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:90
#define av_always_inline
Definition: attributes.h:39
uint8_t * temp
Definition: motion_est.h:56
#define FFSWAP(type, a, b)
Definition: common.h:99
#define stride
#define MV_TYPE_8X8
4 vectors (H.263, MPEG-4 4MV)
Definition: mpegvideo.h:267
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:245
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:239
float * bits_tab
Definition: mpegvideo.h:559
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
void ff_mpv_report_decode_progress(MpegEncContext *s)
Definition: mpegvideo.c:2350
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:1710
#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