FFmpeg  4.3
dnxhddec.c
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1 /*
2  * VC3/DNxHD decoder.
3  * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4  * Copyright (c) 2011 MirriAd Ltd
5  * Copyright (c) 2015 Christophe Gisquet
6  *
7  * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
8  * Slice multithreading and MB interlaced support added by Christophe Gisquet
9  *
10  * This file is part of FFmpeg.
11  *
12  * FFmpeg is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU Lesser General Public
14  * License as published by the Free Software Foundation; either
15  * version 2.1 of the License, or (at your option) any later version.
16  *
17  * FFmpeg is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * Lesser General Public License for more details.
21  *
22  * You should have received a copy of the GNU Lesser General Public
23  * License along with FFmpeg; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  */
26 
27 #include "libavutil/imgutils.h"
28 #include "avcodec.h"
29 #include "blockdsp.h"
30 #define UNCHECKED_BITSTREAM_READER 1
31 #include "get_bits.h"
32 #include "dnxhddata.h"
33 #include "idctdsp.h"
34 #include "internal.h"
35 #include "profiles.h"
36 #include "thread.h"
37 
38 typedef struct RowContext {
39  DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
40  int luma_scale[64];
41  int chroma_scale[64];
43  int last_dc[3];
45  int errors;
46  /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
47  int format;
48 } RowContext;
49 
50 typedef struct DNXHDContext {
54  const uint8_t* buf;
55  int buf_size;
56  int64_t cid; ///< compression id
57  unsigned int width, height;
59  unsigned int mb_width, mb_height;
60  uint32_t mb_scan_index[512];
61  int data_offset; // End of mb_scan_index, where macroblocks start
62  int cur_field; ///< current interlaced field
63  VLC ac_vlc, dc_vlc, run_vlc;
67  int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
68  int is_444;
69  int alpha;
70  int lla;
71  int mbaff;
72  int act;
74  RowContext *row, int n);
75 } DNXHDContext;
76 
77 #define DNXHD_VLC_BITS 9
78 #define DNXHD_DC_VLC_BITS 7
79 
80 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
81  RowContext *row, int n);
83  RowContext *row, int n);
85  RowContext *row, int n);
87  RowContext *row, int n);
89  RowContext *row, int n);
90 
92 {
93  DNXHDContext *ctx = avctx->priv_data;
94 
95  ctx->avctx = avctx;
96  ctx->cid = -1;
97  if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
98  avctx->colorspace = AVCOL_SPC_BT709;
99  }
100 
101  avctx->coded_width = FFALIGN(avctx->width, 16);
102  avctx->coded_height = FFALIGN(avctx->height, 16);
103 
104  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
105  if (!ctx->rows)
106  return AVERROR(ENOMEM);
107 
108  return 0;
109 }
110 
111 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
112 {
113  if (cid != ctx->cid) {
114  int index;
115 
116  if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
117  av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
118  return AVERROR(ENOSYS);
119  }
120  if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
122  av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
123  return AVERROR_INVALIDDATA;
124  }
126  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
127 
128  ff_free_vlc(&ctx->ac_vlc);
129  ff_free_vlc(&ctx->dc_vlc);
130  ff_free_vlc(&ctx->run_vlc);
131 
132  init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
133  ctx->cid_table->ac_bits, 1, 1,
134  ctx->cid_table->ac_codes, 2, 2, 0);
135  init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
136  ctx->cid_table->dc_bits, 1, 1,
137  ctx->cid_table->dc_codes, 1, 1, 0);
138  init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
139  ctx->cid_table->run_bits, 1, 1,
140  ctx->cid_table->run_codes, 2, 2, 0);
141 
142  ctx->cid = cid;
143  }
144  return 0;
145 }
146 
147 static int dnxhd_get_profile(int cid)
148 {
149  switch(cid) {
150  case 1270:
151  return FF_PROFILE_DNXHR_444;
152  case 1271:
153  return FF_PROFILE_DNXHR_HQX;
154  case 1272:
155  return FF_PROFILE_DNXHR_HQ;
156  case 1273:
157  return FF_PROFILE_DNXHR_SQ;
158  case 1274:
159  return FF_PROFILE_DNXHR_LB;
160  }
161  return FF_PROFILE_DNXHD;
162 }
163 
165  const uint8_t *buf, int buf_size,
166  int first_field)
167 {
168  int i, cid, ret;
169  int old_bit_depth = ctx->bit_depth, bitdepth;
170  uint64_t header_prefix;
171  if (buf_size < 0x280) {
172  av_log(ctx->avctx, AV_LOG_ERROR,
173  "buffer too small (%d < 640).\n", buf_size);
174  return AVERROR_INVALIDDATA;
175  }
176 
177  header_prefix = ff_dnxhd_parse_header_prefix(buf);
178  if (header_prefix == 0) {
179  av_log(ctx->avctx, AV_LOG_ERROR,
180  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
181  buf[0], buf[1], buf[2], buf[3], buf[4]);
182  return AVERROR_INVALIDDATA;
183  }
184  if (buf[5] & 2) { /* interlaced */
185  ctx->cur_field = buf[5] & 1;
186  frame->interlaced_frame = 1;
187  frame->top_field_first = first_field ^ ctx->cur_field;
188  av_log(ctx->avctx, AV_LOG_DEBUG,
189  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
190  } else {
191  ctx->cur_field = 0;
192  }
193  ctx->mbaff = (buf[0x6] >> 5) & 1;
194  ctx->alpha = buf[0x7] & 1;
195  ctx->lla = (buf[0x7] >> 1) & 1;
196  if (ctx->alpha)
197  avpriv_request_sample(ctx->avctx, "alpha");
198 
199  ctx->height = AV_RB16(buf + 0x18);
200  ctx->width = AV_RB16(buf + 0x1a);
201 
202  switch(buf[0x21] >> 5) {
203  case 1: bitdepth = 8; break;
204  case 2: bitdepth = 10; break;
205  case 3: bitdepth = 12; break;
206  default:
207  av_log(ctx->avctx, AV_LOG_ERROR,
208  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
209  return AVERROR_INVALIDDATA;
210  }
211 
212  cid = AV_RB32(buf + 0x28);
213 
214  ctx->avctx->profile = dnxhd_get_profile(cid);
215 
216  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
217  return ret;
218  if (ctx->mbaff && ctx->cid_table->cid != 1260)
220  "Adaptive MB interlace flag in an unsupported profile.\n");
221 
222  switch ((buf[0x2C] >> 1) & 3) {
223  case 0: frame->colorspace = AVCOL_SPC_BT709; break;
224  case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
225  case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
226  case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
227  }
228 
229  ctx->act = buf[0x2C] & 1;
230  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
232  "Adaptive color transform in an unsupported profile.\n");
233 
234  ctx->is_444 = (buf[0x2C] >> 6) & 1;
235  if (ctx->is_444) {
236  if (bitdepth == 8) {
237  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
238  return AVERROR_INVALIDDATA;
239  } else if (bitdepth == 10) {
241  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
243  } else {
245  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
247  }
248  } else if (bitdepth == 12) {
251  } else if (bitdepth == 10) {
252  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
254  else
257  } else {
260  }
261 
262  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
263  if (ctx->bit_depth != old_bit_depth) {
264  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
265  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
268  }
269 
270  // make sure profile size constraints are respected
271  // DNx100 allows 1920->1440 and 1280->960 subsampling
272  if (ctx->width != ctx->cid_table->width &&
273  ctx->cid_table->width != DNXHD_VARIABLE) {
276  ctx->width, ctx->cid_table->width, 255);
277  ctx->width = ctx->cid_table->width;
278  }
279 
280  if (buf_size < ctx->cid_table->coding_unit_size) {
281  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
282  buf_size, ctx->cid_table->coding_unit_size);
283  return AVERROR_INVALIDDATA;
284  }
285 
286  ctx->mb_width = (ctx->width + 15)>> 4;
287  ctx->mb_height = AV_RB16(buf + 0x16c);
288 
289  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
290  ctx->height <<= 1;
291 
292  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
293  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
294  ctx->bit_depth, ctx->mbaff, ctx->act);
295 
296  // Newer format supports variable mb_scan_index sizes
297  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
298  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
299  } else {
300  if (ctx->mb_height > 68) {
301  av_log(ctx->avctx, AV_LOG_ERROR,
302  "mb height too big: %d\n", ctx->mb_height);
303  return AVERROR_INVALIDDATA;
304  }
305  ctx->data_offset = 0x280;
306  }
307  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
308  av_log(ctx->avctx, AV_LOG_ERROR,
309  "mb height too big: %d\n", ctx->mb_height);
310  return AVERROR_INVALIDDATA;
311  }
312 
313  if (buf_size < ctx->data_offset) {
314  av_log(ctx->avctx, AV_LOG_ERROR,
315  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
316  return AVERROR_INVALIDDATA;
317  }
318 
319  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
320  av_log(ctx->avctx, AV_LOG_ERROR,
321  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
322  return AVERROR_INVALIDDATA;
323  }
324 
325  for (i = 0; i < ctx->mb_height; i++) {
326  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
327  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
328  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
329  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
330  av_log(ctx->avctx, AV_LOG_ERROR,
331  "invalid mb scan index (%"PRIu32" vs %u).\n",
332  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
333  return AVERROR_INVALIDDATA;
334  }
335  }
336 
337  return 0;
338 }
339 
341  RowContext *row,
342  int n,
343  int index_bits,
344  int level_bias,
345  int level_shift,
346  int dc_shift)
347 {
348  int i, j, index1, index2, len, flags;
349  int level, component, sign;
350  const int *scale;
351  const uint8_t *weight_matrix;
352  const uint8_t *ac_info = ctx->cid_table->ac_info;
353  int16_t *block = row->blocks[n];
354  const int eob_index = ctx->cid_table->eob_index;
355  int ret = 0;
356  OPEN_READER(bs, &row->gb);
357 
358  ctx->bdsp.clear_block(block);
359 
360  if (!ctx->is_444) {
361  if (n & 2) {
362  component = 1 + (n & 1);
363  scale = row->chroma_scale;
364  weight_matrix = ctx->cid_table->chroma_weight;
365  } else {
366  component = 0;
367  scale = row->luma_scale;
368  weight_matrix = ctx->cid_table->luma_weight;
369  }
370  } else {
371  component = (n >> 1) % 3;
372  if (component) {
373  scale = row->chroma_scale;
374  weight_matrix = ctx->cid_table->chroma_weight;
375  } else {
376  scale = row->luma_scale;
377  weight_matrix = ctx->cid_table->luma_weight;
378  }
379  }
380 
381  UPDATE_CACHE(bs, &row->gb);
382  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
383  if (len < 0) {
384  ret = len;
385  goto error;
386  }
387  if (len) {
388  level = GET_CACHE(bs, &row->gb);
389  LAST_SKIP_BITS(bs, &row->gb, len);
390  sign = ~level >> 31;
391  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
392  row->last_dc[component] += level * (1 << dc_shift);
393  }
394  block[0] = row->last_dc[component];
395 
396  i = 0;
397 
398  UPDATE_CACHE(bs, &row->gb);
399  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
400  DNXHD_VLC_BITS, 2);
401 
402  while (index1 != eob_index) {
403  level = ac_info[2*index1+0];
404  flags = ac_info[2*index1+1];
405 
406  sign = SHOW_SBITS(bs, &row->gb, 1);
407  SKIP_BITS(bs, &row->gb, 1);
408 
409  if (flags & 1) {
410  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
411  SKIP_BITS(bs, &row->gb, index_bits);
412  }
413 
414  if (flags & 2) {
415  UPDATE_CACHE(bs, &row->gb);
416  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
417  DNXHD_VLC_BITS, 2);
418  i += ctx->cid_table->run[index2];
419  }
420 
421  if (++i > 63) {
422  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
423  ret = -1;
424  break;
425  }
426 
427  j = ctx->scantable.permutated[i];
428  level *= scale[i];
429  level += scale[i] >> 1;
430  if (level_bias < 32 || weight_matrix[i] != level_bias)
431  level += level_bias; // 1<<(level_shift-1)
432  level >>= level_shift;
433 
434  block[j] = (level ^ sign) - sign;
435 
436  UPDATE_CACHE(bs, &row->gb);
437  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
438  DNXHD_VLC_BITS, 2);
439  }
440 error:
441  CLOSE_READER(bs, &row->gb);
442  return ret;
443 }
444 
446  RowContext *row, int n)
447 {
448  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
449 }
450 
452  RowContext *row, int n)
453 {
454  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
455 }
456 
458  RowContext *row, int n)
459 {
460  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
461 }
462 
464  RowContext *row, int n)
465 {
466  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
467 }
468 
470  RowContext *row, int n)
471 {
472  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
473 }
474 
476  AVFrame *frame, int x, int y)
477 {
478  int shift1 = ctx->bit_depth >= 10;
479  int dct_linesize_luma = frame->linesize[0];
480  int dct_linesize_chroma = frame->linesize[1];
481  uint8_t *dest_y, *dest_u, *dest_v;
482  int dct_y_offset, dct_x_offset;
483  int qscale, i, act;
484  int interlaced_mb = 0;
485 
486  if (ctx->mbaff) {
487  interlaced_mb = get_bits1(&row->gb);
488  qscale = get_bits(&row->gb, 10);
489  } else {
490  qscale = get_bits(&row->gb, 11);
491  }
492  act = get_bits1(&row->gb);
493  if (act) {
494  if (!ctx->act) {
495  static int act_warned;
496  if (!act_warned) {
497  act_warned = 1;
498  av_log(ctx->avctx, AV_LOG_ERROR,
499  "ACT flag set, in violation of frame header.\n");
500  }
501  } else if (row->format == -1) {
502  row->format = act;
503  } else if (row->format != act) {
504  row->format = 2; // Variable
505  }
506  }
507 
508  if (qscale != row->last_qscale) {
509  for (i = 0; i < 64; i++) {
510  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
511  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
512  }
513  row->last_qscale = qscale;
514  }
515 
516  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
517  if (ctx->decode_dct_block(ctx, row, i) < 0)
518  return AVERROR_INVALIDDATA;
519  }
520 
521  if (frame->interlaced_frame) {
522  dct_linesize_luma <<= 1;
523  dct_linesize_chroma <<= 1;
524  }
525 
526  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
527  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
528  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
529 
530  if (frame->interlaced_frame && ctx->cur_field) {
531  dest_y += frame->linesize[0];
532  dest_u += frame->linesize[1];
533  dest_v += frame->linesize[2];
534  }
535  if (interlaced_mb) {
536  dct_linesize_luma <<= 1;
537  dct_linesize_chroma <<= 1;
538  }
539 
540  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
541  dct_x_offset = 8 << shift1;
542  if (!ctx->is_444) {
543  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
544  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
545  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
546  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
547 
548  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
549  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
550  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
551  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
552  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
553  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
554  }
555  } else {
556  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
557  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
558  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
559  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
560 
561  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
562  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
563  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
564  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
565  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
566  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
567  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
568  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
569  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
570  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
571  }
572  }
573 
574  return 0;
575 }
576 
578  int rownb, int threadnb)
579 {
580  const DNXHDContext *ctx = avctx->priv_data;
581  uint32_t offset = ctx->mb_scan_index[rownb];
582  RowContext *row = ctx->rows + threadnb;
583  int x, ret;
584 
585  row->last_dc[0] =
586  row->last_dc[1] =
587  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
588  ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
589  if (ret < 0) {
590  row->errors++;
591  return ret;
592  }
593  for (x = 0; x < ctx->mb_width; x++) {
594  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
595  if (ret < 0) {
596  row->errors++;
597  return ret;
598  }
599  }
600 
601  return 0;
602 }
603 
605  int *got_frame, AVPacket *avpkt)
606 {
607  const uint8_t *buf = avpkt->data;
608  int buf_size = avpkt->size;
609  DNXHDContext *ctx = avctx->priv_data;
610  ThreadFrame frame = { .f = data };
611  AVFrame *picture = data;
612  int first_field = 1;
613  int ret, i;
614 
615  ff_dlog(avctx, "frame size %d\n", buf_size);
616 
617  for (i = 0; i < avctx->thread_count; i++)
618  ctx->rows[i].format = -1;
619 
620 decode_coding_unit:
621  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
622  return ret;
623 
624  if ((avctx->width || avctx->height) &&
625  (ctx->width != avctx->width || ctx->height != avctx->height)) {
626  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
627  avctx->width, avctx->height, ctx->width, ctx->height);
628  first_field = 1;
629  }
630  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
631  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
633  first_field = 1;
634  }
635 
636  avctx->pix_fmt = ctx->pix_fmt;
637  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
638  if (ret < 0)
639  return ret;
640 
641  if (first_field) {
642  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
643  return ret;
644  picture->pict_type = AV_PICTURE_TYPE_I;
645  picture->key_frame = 1;
646  }
647 
648  ctx->buf_size = buf_size - ctx->data_offset;
649  ctx->buf = buf + ctx->data_offset;
650  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
651 
652  if (first_field && picture->interlaced_frame) {
653  buf += ctx->cid_table->coding_unit_size;
654  buf_size -= ctx->cid_table->coding_unit_size;
655  first_field = 0;
656  goto decode_coding_unit;
657  }
658 
659  ret = 0;
660  for (i = 0; i < avctx->thread_count; i++) {
661  ret += ctx->rows[i].errors;
662  ctx->rows[i].errors = 0;
663  }
664 
665  if (ctx->act) {
666  static int act_warned;
667  int format = ctx->rows[0].format;
668  for (i = 1; i < avctx->thread_count; i++) {
669  if (ctx->rows[i].format != format &&
670  ctx->rows[i].format != -1 /* not run */) {
671  format = 2;
672  break;
673  }
674  }
675  switch (format) {
676  case -1:
677  case 2:
678  if (!act_warned) {
679  act_warned = 1;
680  av_log(ctx->avctx, AV_LOG_ERROR,
681  "Unsupported: variable ACT flag.\n");
682  }
683  break;
684  case 0:
685  ctx->pix_fmt = ctx->bit_depth==10
687  break;
688  case 1:
689  ctx->pix_fmt = ctx->bit_depth==10
691  break;
692  }
693  }
694  avctx->pix_fmt = ctx->pix_fmt;
695  if (ret) {
696  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
697  return AVERROR_INVALIDDATA;
698  }
699 
700  *got_frame = 1;
701  return avpkt->size;
702 }
703 
705 {
706  DNXHDContext *ctx = avctx->priv_data;
707 
708  ff_free_vlc(&ctx->ac_vlc);
709  ff_free_vlc(&ctx->dc_vlc);
710  ff_free_vlc(&ctx->run_vlc);
711 
712  av_freep(&ctx->rows);
713 
714  return 0;
715 }
716 
718  .name = "dnxhd",
719  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
720  .type = AVMEDIA_TYPE_VIDEO,
721  .id = AV_CODEC_ID_DNXHD,
722  .priv_data_size = sizeof(DNXHDContext),
724  .close = dnxhd_decode_close,
726  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
729 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:1874
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:511
int cid
Definition: mxfenc.c:1971
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:445
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static enum AVPixelFormat pix_fmt
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
if(ret< 0)
Definition: vf_mcdeint.c:279
const uint8_t * dc_bits
Definition: dnxhddata.h:52
IDCTDSPContext idsp
Definition: dnxhddec.c:64
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:714
int64_t cid
compression id
Definition: dnxhddec.c:56
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:147
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
const uint8_t * luma_weight
Definition: dnxhddata.h:51
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:73
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
void(* clear_block)(int16_t *block)
Definition: blockdsp.h:36
#define avpriv_request_sample(...)
Scantable.
Definition: idctdsp.h:31
int num
Numerator.
Definition: rational.h:59
int size
Definition: packet.h:356
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:413
const CIDEntry ff_dnxhd_cid_table[]
Definition: dnxhddata.c:935
const uint16_t * run_codes
Definition: dnxhddata.h:55
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:905
RowContext * rows
Definition: dnxhddec.c:52
VLC run_vlc
Definition: dnxhddec.c:63
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
int errors
Definition: dnxhddec.c:45
uint8_t permutated[64]
Definition: idctdsp.h:33
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1757
static void error(const char *err)
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
Definition: vlc.h:38
int profile
profile
Definition: avcodec.h:1859
VLC dc_vlc
Definition: dnxhddec.c:63
AVCodec.
Definition: codec.h:190
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
int luma_scale[64]
Definition: dnxhddec.c:40
const uint8_t * buf
Definition: dnxhddec.c:54
static int16_t block[64]
Definition: dct.c:115
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
Definition: dnxhddec.c:704
uint8_t
#define av_cold
Definition: attributes.h:88
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:463
const AVProfile ff_dnxhd_profiles[]
Definition: profiles.c:48
#define AV_RB32
Definition: intreadwrite.h:130
Multithreading support functions.
static AVFrame * frame
const char data[16]
Definition: mxf.c:91
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
#define height
static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx, RowContext *row, int n, int index_bits, int level_bias, int level_shift, int dc_shift)
Definition: dnxhddec.c:340
uint8_t * data
Definition: packet.h:355
int format
-1:not set yet 0:off=RGB 1:on=YUV 2:variable
Definition: dnxhddec.c:47
#define ff_dlog(a,...)
const uint8_t * run_bits
Definition: dnxhddata.h:56
bitstream reader API header.
int bit_depth
Definition: dnxhddec.c:67
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define DNXHD_VLC_BITS
Definition: dnxhddec.c:77
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:447
unsigned int coding_unit_size
Definition: dnxhddata.h:46
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define DNXHD_DC_VLC_BITS
Definition: dnxhddec.c:78
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:402
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
#define FFALIGN(x, a)
Definition: macros.h:48
enum AVPixelFormat pix_fmt
Definition: dnxhddec.c:58
#define av_log(a,...)
static int first_field(const struct video_data *s)
Definition: v4l2.c:234
VLC ac_vlc
Definition: dnxhddec.c:63
const uint8_t * ac_bits
Definition: dnxhddata.h:54
const uint8_t * ac_info
Definition: dnxhddata.h:54
const uint16_t * ac_codes
Definition: dnxhddata.h:53
#define UPDATE_CACHE(name, gb)
Definition: get_bits.h:178
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_dnxhd_get_cid_table(int cid)
Definition: dnxhddata.c:1078
unsigned int width
Definition: dnxhddata.h:44
static const int shift1[6]
Definition: dxa.c:50
static int dnxhd_decode_row(AVCodecContext *avctx, void *data, int rownb, int threadnb)
Definition: dnxhddec.c:577
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:606
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:555
unsigned int height
Definition: dnxhddec.c:57
const uint8_t * dc_codes
Definition: dnxhddata.h:52
const char * name
Name of the codec implementation.
Definition: codec.h:197
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:400
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:1875
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
#define CLOSE_READER(name, gb)
Definition: get_bits.h:149
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:457
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:106
static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
Definition: dnxhddata.h:86
Definition: vlc.h:26
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
const uint8_t * chroma_weight
Definition: dnxhddata.h:51
#define SKIP_BITS(name, gb, num)
Definition: get_bits.h:193
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:383
int width
picture width / height.
Definition: avcodec.h:699
#define NEG_USR32(a, s)
Definition: mathops.h:166
static void decode_dct_block(RangeCoder *c, DCTBlockCoder *bc, uint8_t *dst, ptrdiff_t stride, int block_size, int *block, int mb_x, int mb_y)
Definition: mss3.c:565
const uint8_t * run
Definition: dnxhddata.h:56
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:254
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:520
AVFormatContext * ctx
Definition: movenc.c:48
#define LAST_SKIP_BITS(name, gb, num)
Definition: get_bits.h:199
ScanTable scantable
Definition: dnxhddec.c:65
unsigned int mb_width
Definition: dnxhddec.c:59
#define GET_VLC(code, name, gb, table, bits, max_depth)
If the vlc code is invalid and max_depth=1, then no bits will be removed.
Definition: get_bits.h:706
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:96
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:1877
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
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:475
#define SHOW_UBITS(name, gb, num)
Definition: get_bits.h:211
#define FF_ARRAY_ELEMS(a)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:1785
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:110
int bit_depth
Definition: dnxhddata.h:49
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
Definition: avcodec.h:1845
unsigned int width
Definition: dnxhddec.c:57
Libavcodec external API header.
int last_qscale
Definition: dnxhddec.c:44
int16_t blocks[12][64]
Definition: dnxhddec.c:39
int cur_field
current interlaced field
Definition: dnxhddec.c:62
unsigned int mb_height
Definition: dnxhddec.c:59
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:451
main external API structure.
Definition: avcodec.h:526
#define OPEN_READER(name, gb)
Definition: get_bits.h:138
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
int coded_height
Definition: avcodec.h:714
static const AVProfile profiles[]
int eob_index
Definition: dnxhddata.h:50
int index
Definition: gxfenc.c:89
int chroma_scale[64]
Definition: dnxhddec.c:41
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1154
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:67
#define GET_CACHE(name, gb)
Definition: get_bits.h:215
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
#define FF_PROFILE_DNXHR_SQ
Definition: avcodec.h:1876
int is_444
Definition: dnxhddec.c:68
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:414
#define SIZE_SPECIFIER
Definition: internal.h:262
#define flags(name, subs,...)
Definition: cbs_av1.c:564
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:404
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:111
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
uint8_t level
Definition: svq3.c:209
uint32_t mb_scan_index[512]
Definition: dnxhddec.c:60
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:521
#define DNXHD_VARIABLE
Indicate that a CIDEntry value must be read in the bitstream.
Definition: dnxhddata.h:40
#define SHOW_SBITS(name, gb, num)
Definition: get_bits.h:212
int
#define FF_PROFILE_DNXHR_HQX
Definition: avcodec.h:1878
GetBitContext gb
Definition: dnxhddec.c:42
common internal api header.
int data_offset
Definition: dnxhddec.c:61
int den
Denominator.
Definition: rational.h:60
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:1879
int buf_size
Definition: dnxhddec.c:55
void * priv_data
Definition: avcodec.h:553
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: idctdsp.c:29
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:452
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:604
int len
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
AVCodecContext * avctx
Definition: dnxhddec.c:51
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:378
BlockDSPContext bdsp
Definition: dnxhddec.c:53
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:717
const CIDEntry * cid_table
Definition: dnxhddec.c:66
#define av_freep(p)
#define av_always_inline
Definition: attributes.h:45
int cid
Definition: dnxhddata.h:43
static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, const uint8_t *buf, int buf_size, int first_field)
Definition: dnxhddec.c:164
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2465
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: packet.h:332
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:359
int last_dc[3]
Definition: dnxhddec.c:43
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:469
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:91
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:192