FFmpeg  4.4.5
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 "libavutil/mem_internal.h"
29 
30 #include "avcodec.h"
31 #include "blockdsp.h"
32 #define UNCHECKED_BITSTREAM_READER 1
33 #include "get_bits.h"
34 #include "dnxhddata.h"
35 #include "idctdsp.h"
36 #include "internal.h"
37 #include "profiles.h"
38 #include "thread.h"
39 
40 typedef struct RowContext {
41  DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
42  int luma_scale[64];
43  int chroma_scale[64];
45  int last_dc[3];
47  int errors;
48  /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
49  int format;
50 } RowContext;
51 
52 typedef struct DNXHDContext {
56  const uint8_t* buf;
57  int buf_size;
58  int64_t cid; ///< compression id
59  unsigned int width, height;
61  unsigned int mb_width, mb_height;
62  uint32_t mb_scan_index[512];
63  int data_offset; // End of mb_scan_index, where macroblocks start
64  int cur_field; ///< current interlaced field
69  int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
70  int is_444;
71  int alpha;
72  int lla;
73  int mbaff;
74  int act;
76  RowContext *row, int n);
77 } DNXHDContext;
78 
79 #define DNXHD_VLC_BITS 9
80 #define DNXHD_DC_VLC_BITS 7
81 
82 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
83  RowContext *row, int n);
85  RowContext *row, int n);
87  RowContext *row, int n);
89  RowContext *row, int n);
91  RowContext *row, int n);
92 
94 {
96 
97  ctx->avctx = avctx;
98  ctx->cid = -1;
101  }
102 
105 
106  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
107  if (!ctx->rows)
108  return AVERROR(ENOMEM);
109 
110  return 0;
111 }
112 
113 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
114 {
115  int ret;
116  if (cid != ctx->cid) {
118 
119  if (!cid_table) {
120  av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
121  return AVERROR(ENOSYS);
122  }
123  if (cid_table->bit_depth != bitdepth &&
125  av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n",
126  cid_table->bit_depth, bitdepth);
127  return AVERROR_INVALIDDATA;
128  }
129  ctx->cid_table = cid_table;
130  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
131 
132  ff_free_vlc(&ctx->ac_vlc);
133  ff_free_vlc(&ctx->dc_vlc);
134  ff_free_vlc(&ctx->run_vlc);
135 
136  if ((ret = init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
137  ctx->cid_table->ac_bits, 1, 1,
138  ctx->cid_table->ac_codes, 2, 2, 0)) < 0)
139  goto out;
140  if ((ret = init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
141  ctx->cid_table->dc_bits, 1, 1,
142  ctx->cid_table->dc_codes, 1, 1, 0)) < 0)
143  goto out;
144  if ((ret = init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
145  ctx->cid_table->run_bits, 1, 1,
146  ctx->cid_table->run_codes, 2, 2, 0)) < 0)
147  goto out;
148 
149  ctx->cid = cid;
150  }
151  ret = 0;
152 out:
153  if (ret < 0)
154  av_log(ctx->avctx, AV_LOG_ERROR, "init_vlc failed\n");
155  return ret;
156 }
157 
158 static int dnxhd_get_profile(int cid)
159 {
160  switch(cid) {
161  case 1270:
162  return FF_PROFILE_DNXHR_444;
163  case 1271:
164  return FF_PROFILE_DNXHR_HQX;
165  case 1272:
166  return FF_PROFILE_DNXHR_HQ;
167  case 1273:
168  return FF_PROFILE_DNXHR_SQ;
169  case 1274:
170  return FF_PROFILE_DNXHR_LB;
171  }
172  return FF_PROFILE_DNXHD;
173 }
174 
176  const uint8_t *buf, int buf_size,
177  int first_field)
178 {
179  int i, cid, ret;
180  int old_bit_depth = ctx->bit_depth, bitdepth;
181  uint64_t header_prefix;
182  if (buf_size < 0x280) {
183  av_log(ctx->avctx, AV_LOG_ERROR,
184  "buffer too small (%d < 640).\n", buf_size);
185  return AVERROR_INVALIDDATA;
186  }
187 
188  header_prefix = ff_dnxhd_parse_header_prefix(buf);
189  if (header_prefix == 0) {
190  av_log(ctx->avctx, AV_LOG_ERROR,
191  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
192  buf[0], buf[1], buf[2], buf[3], buf[4]);
193  return AVERROR_INVALIDDATA;
194  }
195  if (buf[5] & 2) { /* interlaced */
196  ctx->cur_field = buf[5] & 1;
197  frame->interlaced_frame = 1;
198  frame->top_field_first = first_field ^ ctx->cur_field;
199  av_log(ctx->avctx, AV_LOG_DEBUG,
200  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
201  } else {
202  ctx->cur_field = 0;
203  }
204  ctx->mbaff = (buf[0x6] >> 5) & 1;
205  ctx->alpha = buf[0x7] & 1;
206  ctx->lla = (buf[0x7] >> 1) & 1;
207  if (ctx->alpha)
208  avpriv_request_sample(ctx->avctx, "alpha");
209 
210  ctx->height = AV_RB16(buf + 0x18);
211  ctx->width = AV_RB16(buf + 0x1a);
212 
213  switch(buf[0x21] >> 5) {
214  case 1: bitdepth = 8; break;
215  case 2: bitdepth = 10; break;
216  case 3: bitdepth = 12; break;
217  default:
218  av_log(ctx->avctx, AV_LOG_ERROR,
219  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
220  return AVERROR_INVALIDDATA;
221  }
222 
223  cid = AV_RB32(buf + 0x28);
224 
225  ctx->avctx->profile = dnxhd_get_profile(cid);
226 
227  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
228  return ret;
229  if (ctx->mbaff && ctx->cid_table->cid != 1260)
230  av_log(ctx->avctx, AV_LOG_WARNING,
231  "Adaptive MB interlace flag in an unsupported profile.\n");
232 
233  switch ((buf[0x2C] >> 1) & 3) {
234  case 0: frame->colorspace = AVCOL_SPC_BT709; break;
235  case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
236  case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
237  case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
238  }
239 
240  ctx->act = buf[0x2C] & 1;
241  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
242  av_log(ctx->avctx, AV_LOG_WARNING,
243  "Adaptive color transform in an unsupported profile.\n");
244 
245  ctx->is_444 = (buf[0x2C] >> 6) & 1;
246  if (ctx->is_444) {
247  if (bitdepth == 8) {
248  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
249  return AVERROR_INVALIDDATA;
250  } else if (bitdepth == 10) {
251  ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
252  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
254  } else {
255  ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
256  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
258  }
259  } else if (bitdepth == 12) {
260  ctx->decode_dct_block = dnxhd_decode_dct_block_12;
261  ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
262  } else if (bitdepth == 10) {
263  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
264  ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
265  else
266  ctx->decode_dct_block = dnxhd_decode_dct_block_10;
267  ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
268  } else {
269  ctx->decode_dct_block = dnxhd_decode_dct_block_8;
270  ctx->pix_fmt = AV_PIX_FMT_YUV422P;
271  }
272 
273  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
274  if (ctx->bit_depth != old_bit_depth) {
275  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
276  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
277  ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
279  }
280 
281  // make sure profile size constraints are respected
282  // DNx100 allows 1920->1440 and 1280->960 subsampling
283  if (ctx->width != ctx->cid_table->width &&
284  ctx->cid_table->width != DNXHD_VARIABLE) {
285  av_reduce(&ctx->avctx->sample_aspect_ratio.num,
286  &ctx->avctx->sample_aspect_ratio.den,
287  ctx->width, ctx->cid_table->width, 255);
288  ctx->width = ctx->cid_table->width;
289  }
290 
291  if (buf_size < ctx->cid_table->coding_unit_size) {
292  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
293  buf_size, ctx->cid_table->coding_unit_size);
294  return AVERROR_INVALIDDATA;
295  }
296 
297  ctx->mb_width = (ctx->width + 15)>> 4;
298  ctx->mb_height = AV_RB16(buf + 0x16c);
299 
300  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
301  ctx->height <<= 1;
302 
303  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
304  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
305  ctx->bit_depth, ctx->mbaff, ctx->act);
306 
307  // Newer format supports variable mb_scan_index sizes
308  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
309  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
310  } else {
311  if (ctx->mb_height > 68) {
312  av_log(ctx->avctx, AV_LOG_ERROR,
313  "mb height too big: %d\n", ctx->mb_height);
314  return AVERROR_INVALIDDATA;
315  }
316  ctx->data_offset = 0x280;
317  }
318  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
319  av_log(ctx->avctx, AV_LOG_ERROR,
320  "mb height too big: %d\n", ctx->mb_height);
321  return AVERROR_INVALIDDATA;
322  }
323 
324  if (buf_size < ctx->data_offset) {
325  av_log(ctx->avctx, AV_LOG_ERROR,
326  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
327  return AVERROR_INVALIDDATA;
328  }
329 
330  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
331  av_log(ctx->avctx, AV_LOG_ERROR,
332  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
333  return AVERROR_INVALIDDATA;
334  }
335 
336  for (i = 0; i < ctx->mb_height; i++) {
337  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
338  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
339  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
340  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
341  av_log(ctx->avctx, AV_LOG_ERROR,
342  "invalid mb scan index (%"PRIu32" vs %u).\n",
343  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
344  return AVERROR_INVALIDDATA;
345  }
346  }
347 
348  return 0;
349 }
350 
352  RowContext *row,
353  int n,
354  int index_bits,
355  int level_bias,
356  int level_shift,
357  int dc_shift)
358 {
359  int i, j, index1, index2, len, flags;
360  int level, component, sign;
361  const int *scale;
362  const uint8_t *weight_matrix;
363  const uint8_t *ac_info = ctx->cid_table->ac_info;
364  int16_t *block = row->blocks[n];
365  const int eob_index = ctx->cid_table->eob_index;
366  int ret = 0;
367  OPEN_READER(bs, &row->gb);
368 
369  ctx->bdsp.clear_block(block);
370 
371  if (!ctx->is_444) {
372  if (n & 2) {
373  component = 1 + (n & 1);
374  scale = row->chroma_scale;
375  weight_matrix = ctx->cid_table->chroma_weight;
376  } else {
377  component = 0;
378  scale = row->luma_scale;
379  weight_matrix = ctx->cid_table->luma_weight;
380  }
381  } else {
382  component = (n >> 1) % 3;
383  if (component) {
384  scale = row->chroma_scale;
385  weight_matrix = ctx->cid_table->chroma_weight;
386  } else {
387  scale = row->luma_scale;
388  weight_matrix = ctx->cid_table->luma_weight;
389  }
390  }
391 
392  UPDATE_CACHE(bs, &row->gb);
393  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
394  if (len < 0) {
395  ret = len;
396  goto error;
397  }
398  if (len) {
399  level = GET_CACHE(bs, &row->gb);
400  LAST_SKIP_BITS(bs, &row->gb, len);
401  sign = ~level >> 31;
402  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
403  row->last_dc[component] += level * (1 << dc_shift);
404  }
405  block[0] = row->last_dc[component];
406 
407  i = 0;
408 
409  UPDATE_CACHE(bs, &row->gb);
410  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
411  DNXHD_VLC_BITS, 2);
412 
413  while (index1 != eob_index) {
414  level = ac_info[2*index1+0];
415  flags = ac_info[2*index1+1];
416 
417  sign = SHOW_SBITS(bs, &row->gb, 1);
418  SKIP_BITS(bs, &row->gb, 1);
419 
420  if (flags & 1) {
421  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
422  SKIP_BITS(bs, &row->gb, index_bits);
423  }
424 
425  if (flags & 2) {
426  UPDATE_CACHE(bs, &row->gb);
427  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
428  DNXHD_VLC_BITS, 2);
429  i += ctx->cid_table->run[index2];
430  }
431 
432  if (++i > 63) {
433  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
434  ret = -1;
435  break;
436  }
437 
438  j = ctx->scantable.permutated[i];
439  level *= scale[i];
440  level += scale[i] >> 1;
441  if (level_bias < 32 || weight_matrix[i] != level_bias)
442  level += level_bias; // 1<<(level_shift-1)
443  level >>= level_shift;
444 
445  block[j] = (level ^ sign) - sign;
446 
447  UPDATE_CACHE(bs, &row->gb);
448  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
449  DNXHD_VLC_BITS, 2);
450  }
451 error:
452  CLOSE_READER(bs, &row->gb);
453  return ret;
454 }
455 
457  RowContext *row, int n)
458 {
459  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
460 }
461 
463  RowContext *row, int n)
464 {
465  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
466 }
467 
469  RowContext *row, int n)
470 {
471  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
472 }
473 
475  RowContext *row, int n)
476 {
477  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
478 }
479 
481  RowContext *row, int n)
482 {
483  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
484 }
485 
487  AVFrame *frame, int x, int y)
488 {
489  int shift1 = ctx->bit_depth >= 10;
490  int dct_linesize_luma = frame->linesize[0];
491  int dct_linesize_chroma = frame->linesize[1];
492  uint8_t *dest_y, *dest_u, *dest_v;
493  int dct_y_offset, dct_x_offset;
494  int qscale, i, act;
495  int interlaced_mb = 0;
496 
497  if (ctx->mbaff) {
498  interlaced_mb = get_bits1(&row->gb);
499  qscale = get_bits(&row->gb, 10);
500  } else {
501  qscale = get_bits(&row->gb, 11);
502  }
503  act = get_bits1(&row->gb);
504  if (act) {
505  if (!ctx->act) {
506  static int act_warned;
507  if (!act_warned) {
508  act_warned = 1;
509  av_log(ctx->avctx, AV_LOG_ERROR,
510  "ACT flag set, in violation of frame header.\n");
511  }
512  } else if (row->format == -1) {
513  row->format = act;
514  } else if (row->format != act) {
515  row->format = 2; // Variable
516  }
517  }
518 
519  if (qscale != row->last_qscale) {
520  for (i = 0; i < 64; i++) {
521  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
522  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
523  }
524  row->last_qscale = qscale;
525  }
526 
527  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
528  if (ctx->decode_dct_block(ctx, row, i) < 0)
529  return AVERROR_INVALIDDATA;
530  }
531 
532  if (frame->interlaced_frame) {
533  dct_linesize_luma <<= 1;
534  dct_linesize_chroma <<= 1;
535  }
536 
537  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
538  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
539  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
540 
541  if (frame->interlaced_frame && ctx->cur_field) {
542  dest_y += frame->linesize[0];
543  dest_u += frame->linesize[1];
544  dest_v += frame->linesize[2];
545  }
546  if (interlaced_mb) {
547  dct_linesize_luma <<= 1;
548  dct_linesize_chroma <<= 1;
549  }
550 
551  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
552  dct_x_offset = 8 << shift1;
553  if (!ctx->is_444) {
554  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
555  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
556  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
557  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
558 
559  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
560  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
561  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
562  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
563  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
564  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
565  }
566  } else {
567  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
568  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
569  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
570  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
571 
572  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
573  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
574  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
575  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
576  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
577  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
578  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
579  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
580  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
581  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
582  }
583  }
584 
585  return 0;
586 }
587 
589  int rownb, int threadnb)
590 {
591  const DNXHDContext *ctx = avctx->priv_data;
592  uint32_t offset = ctx->mb_scan_index[rownb];
593  RowContext *row = ctx->rows + threadnb;
594  int x, ret;
595 
596  row->last_dc[0] =
597  row->last_dc[1] =
598  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
599  ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
600  if (ret < 0) {
601  row->errors++;
602  return ret;
603  }
604  for (x = 0; x < ctx->mb_width; x++) {
605  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
606  if (ret < 0) {
607  row->errors++;
608  return ret;
609  }
610  }
611 
612  return 0;
613 }
614 
616  int *got_frame, AVPacket *avpkt)
617 {
618  const uint8_t *buf = avpkt->data;
619  int buf_size = avpkt->size;
621  ThreadFrame frame = { .f = data };
622  AVFrame *picture = data;
623  int first_field = 1;
624  int ret, i;
625 
626  ff_dlog(avctx, "frame size %d\n", buf_size);
627 
628  for (i = 0; i < avctx->thread_count; i++)
629  ctx->rows[i].format = -1;
630 
631 decode_coding_unit:
632  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
633  return ret;
634 
635  if ((avctx->width || avctx->height) &&
636  (ctx->width != avctx->width || ctx->height != avctx->height)) {
637  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
638  avctx->width, avctx->height, ctx->width, ctx->height);
639  first_field = 1;
640  }
641  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
642  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
644  first_field = 1;
645  }
646 
647  avctx->pix_fmt = ctx->pix_fmt;
648  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
649  if (ret < 0)
650  return ret;
651 
652  if (first_field) {
653  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
654  return ret;
655  picture->pict_type = AV_PICTURE_TYPE_I;
656  picture->key_frame = 1;
657  }
658 
659  ctx->buf_size = buf_size - ctx->data_offset;
660  ctx->buf = buf + ctx->data_offset;
661  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
662 
663  if (first_field && picture->interlaced_frame) {
664  buf += ctx->cid_table->coding_unit_size;
665  buf_size -= ctx->cid_table->coding_unit_size;
666  first_field = 0;
667  goto decode_coding_unit;
668  }
669 
670  ret = 0;
671  for (i = 0; i < avctx->thread_count; i++) {
672  ret += ctx->rows[i].errors;
673  ctx->rows[i].errors = 0;
674  }
675 
676  if (ctx->act) {
677  static int act_warned;
678  int format = ctx->rows[0].format;
679  for (i = 1; i < avctx->thread_count; i++) {
680  if (ctx->rows[i].format != format &&
681  ctx->rows[i].format != -1 /* not run */) {
682  format = 2;
683  break;
684  }
685  }
686  switch (format) {
687  case -1:
688  case 2:
689  if (!act_warned) {
690  act_warned = 1;
691  av_log(ctx->avctx, AV_LOG_ERROR,
692  "Unsupported: variable ACT flag.\n");
693  }
694  break;
695  case 0:
696  ctx->pix_fmt = ctx->bit_depth==10
698  break;
699  case 1:
700  ctx->pix_fmt = ctx->bit_depth==10
702  break;
703  }
704  }
705  avctx->pix_fmt = ctx->pix_fmt;
706  if (ret) {
707  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
708  return AVERROR_INVALIDDATA;
709  }
710 
711  *got_frame = 1;
712  return avpkt->size;
713 }
714 
716 {
718 
719  ff_free_vlc(&ctx->ac_vlc);
720  ff_free_vlc(&ctx->dc_vlc);
721  ff_free_vlc(&ctx->run_vlc);
722 
723  av_freep(&ctx->rows);
724 
725  return 0;
726 }
727 
729  .name = "dnxhd",
730  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
731  .type = AVMEDIA_TYPE_VIDEO,
732  .id = AV_CODEC_ID_DNXHD,
733  .priv_data_size = sizeof(DNXHDContext),
735  .close = dnxhd_decode_close,
737  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
740 };
static const char *const format[]
Definition: af_aiir.c:456
#define av_always_inline
Definition: attributes.h:45
#define av_cold
Definition: attributes.h:88
uint8_t
Libavcodec external API header.
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:1878
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:1874
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:1876
#define FF_PROFILE_DNXHD
Definition: avcodec.h:1873
#define FF_PROFILE_DNXHR_SQ
Definition: avcodec.h:1875
#define FF_PROFILE_DNXHR_HQX
Definition: avcodec.h:1877
#define AV_RB32
Definition: intreadwrite.h:130
#define AV_RB16
Definition: intreadwrite.h:53
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:431
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
static AVFrame * frame
const CIDEntry * ff_dnxhd_get_cid_table(int cid)
Definition: dnxhddata.c:1078
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:65
#define DNXHD_VARIABLE
Indicate that a CIDEntry value must be read in the bitstream.
Definition: dnxhddata.h:40
static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
Definition: dnxhddata.h:84
int
bitstream reader API header.
#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
#define GET_CACHE(name, gb)
Definition: get_bits.h:215
#define CLOSE_READER(name, gb)
Definition: get_bits.h:149
#define SHOW_UBITS(name, gb, num)
Definition: get_bits.h:211
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
#define SHOW_SBITS(name, gb, num)
Definition: get_bits.h:212
#define OPEN_READER(name, gb)
Definition: get_bits.h:138
#define SKIP_BITS(name, gb, num)
Definition: get_bits.h:193
#define UPDATE_CACHE(name, gb)
Definition: get_bits.h:178
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
#define LAST_SKIP_BITS(name, gb, num)
Definition: get_bits.h:199
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:112
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:108
@ AV_CODEC_ID_DNXHD
Definition: codec_id.h:148
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
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
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:117
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
Definition: idctdsp.c:238
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: idctdsp.c:29
misc image utilities
int i
Definition: input.c:407
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:462
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:480
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:113
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:728
static int dnxhd_decode_row(AVCodecContext *avctx, void *data, int rownb, int threadnb)
Definition: dnxhddec.c:588
#define DNXHD_VLC_BITS
Definition: dnxhddec.c:79
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:486
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:158
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:93
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:351
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:468
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:615
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:456
#define DNXHD_DC_VLC_BITS
Definition: dnxhddec.c:80
static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, const uint8_t *buf, int buf_size, int first_field)
Definition: dnxhddec.c:175
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:474
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
Definition: dnxhddec.c:715
static const int shift1[6]
Definition: dxa.c:50
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:84
common internal API header
#define SIZE_SPECIFIER
Definition: internal.h:193
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static const AVProfile profiles[]
#define FFALIGN(x, a)
Definition: macros.h:48
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
#define NEG_USR32(a, s)
Definition: mathops.h:166
const char data[16]
Definition: mxf.c:142
int cid
Definition: mxfenc.c:2039
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:2489
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:514
@ AVCOL_SPC_BT2020_CL
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:524
@ AVCOL_SPC_BT2020_NCL
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:523
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:515
const AVProfile ff_dnxhd_profiles[]
Definition: profiles.c:48
FF_ENABLE_DEPRECATION_WARNINGS int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
#define FF_ARRAY_ELEMS(a)
main external API structure.
Definition: avcodec.h:536
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:746
int width
picture width / height.
Definition: avcodec.h:709
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1164
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1773
int coded_height
Definition: avcodec.h:724
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:1844
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:724
void * priv_data
Definition: avcodec.h:563
AVCodec.
Definition: codec.h:197
const char * name
Name of the codec implementation.
Definition: codec.h:204
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:396
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:470
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:465
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:573
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:401
This structure stores compressed data.
Definition: packet.h:346
int size
Definition: packet.h:370
uint8_t * data
Definition: packet.h:369
int bit_depth
Definition: dnxhddata.h:49
unsigned int coding_unit_size
Definition: dnxhddata.h:46
VLC ac_vlc
Definition: dnxhddec.c:65
VLC dc_vlc
Definition: dnxhddec.c:65
unsigned int mb_width
Definition: dnxhddec.c:61
VLC run_vlc
Definition: dnxhddec.c:65
int64_t cid
compression id
Definition: dnxhddec.c:58
AVCodecContext * avctx
Definition: dnxhddec.c:53
unsigned int mb_height
Definition: dnxhddec.c:61
unsigned int width
Definition: dnxhddec.c:59
const uint8_t * buf
Definition: dnxhddec.c:56
int is_444
Definition: dnxhddec.c:70
BlockDSPContext bdsp
Definition: dnxhddec.c:55
RowContext * rows
Definition: dnxhddec.c:54
int data_offset
Definition: dnxhddec.c:63
IDCTDSPContext idsp
Definition: dnxhddec.c:66
uint32_t mb_scan_index[512]
Definition: dnxhddec.c:62
int bit_depth
Definition: dnxhddec.c:69
unsigned int height
Definition: dnxhddec.c:59
const CIDEntry * cid_table
Definition: dnxhddec.c:68
ScanTable scantable
Definition: dnxhddec.c:67
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:75
int cur_field
current interlaced field
Definition: dnxhddec.c:64
int buf_size
Definition: dnxhddec.c:57
enum AVPixelFormat pix_fmt
Definition: dnxhddec.c:60
int errors
Definition: dnxhddec.c:47
int last_qscale
Definition: dnxhddec.c:46
int last_dc[3]
Definition: dnxhddec.c:45
int chroma_scale[64]
Definition: dnxhddec.c:43
int16_t blocks[12][64]
Definition: dnxhddec.c:41
int format
-1:not set yet 0:off=RGB 1:on=YUV 2:variable
Definition: dnxhddec.c:49
int luma_scale[64]
Definition: dnxhddec.c:42
GetBitContext gb
Definition: dnxhddec.c:44
Scantable.
Definition: idctdsp.h:31
Definition: vlc.h:26
uint8_t level
Definition: svq3.c:206
#define ff_dlog(a,...)
#define avpriv_request_sample(...)
#define av_freep(p)
#define av_log(a,...)
static void error(const char *err)
static int16_t block[64]
Definition: dct.c:116
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
static int first_field(const struct video_data *s)
Definition: v4l2.c:234
if(ret< 0)
Definition: vf_mcdeint.c:282
static const uint8_t offset[127][2]
Definition: vf_spp.c:107
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
Definition: vlc.h:38
int len