FFmpeg  4.3.8
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  int ret;
114  if (cid != ctx->cid) {
115  int index;
116 
117  if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
118  av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
119  return AVERROR(ENOSYS);
120  }
121  if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
123  av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
124  return AVERROR_INVALIDDATA;
125  }
127  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
128 
129  ff_free_vlc(&ctx->ac_vlc);
130  ff_free_vlc(&ctx->dc_vlc);
131  ff_free_vlc(&ctx->run_vlc);
132 
133  if ((ret = init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
134  ctx->cid_table->ac_bits, 1, 1,
135  ctx->cid_table->ac_codes, 2, 2, 0)) < 0)
136  goto out;
137  if ((ret = init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
138  ctx->cid_table->dc_bits, 1, 1,
139  ctx->cid_table->dc_codes, 1, 1, 0)) < 0)
140  goto out;
141  if ((ret = init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
142  ctx->cid_table->run_bits, 1, 1,
143  ctx->cid_table->run_codes, 2, 2, 0)) < 0)
144  goto out;
145 
146  ctx->cid = cid;
147  }
148  ret = 0;
149 out:
150  if (ret < 0)
151  av_log(ctx->avctx, AV_LOG_ERROR, "init_vlc failed\n");
152  return ret;
153 }
154 
155 static int dnxhd_get_profile(int cid)
156 {
157  switch(cid) {
158  case 1270:
159  return FF_PROFILE_DNXHR_444;
160  case 1271:
161  return FF_PROFILE_DNXHR_HQX;
162  case 1272:
163  return FF_PROFILE_DNXHR_HQ;
164  case 1273:
165  return FF_PROFILE_DNXHR_SQ;
166  case 1274:
167  return FF_PROFILE_DNXHR_LB;
168  }
169  return FF_PROFILE_DNXHD;
170 }
171 
173  const uint8_t *buf, int buf_size,
174  int first_field)
175 {
176  int i, cid, ret;
177  int old_bit_depth = ctx->bit_depth, bitdepth;
178  uint64_t header_prefix;
179  if (buf_size < 0x280) {
180  av_log(ctx->avctx, AV_LOG_ERROR,
181  "buffer too small (%d < 640).\n", buf_size);
182  return AVERROR_INVALIDDATA;
183  }
184 
185  header_prefix = ff_dnxhd_parse_header_prefix(buf);
186  if (header_prefix == 0) {
187  av_log(ctx->avctx, AV_LOG_ERROR,
188  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
189  buf[0], buf[1], buf[2], buf[3], buf[4]);
190  return AVERROR_INVALIDDATA;
191  }
192  if (buf[5] & 2) { /* interlaced */
193  ctx->cur_field = buf[5] & 1;
194  frame->interlaced_frame = 1;
195  frame->top_field_first = first_field ^ ctx->cur_field;
196  av_log(ctx->avctx, AV_LOG_DEBUG,
197  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
198  } else {
199  ctx->cur_field = 0;
200  }
201  ctx->mbaff = (buf[0x6] >> 5) & 1;
202  ctx->alpha = buf[0x7] & 1;
203  ctx->lla = (buf[0x7] >> 1) & 1;
204  if (ctx->alpha)
205  avpriv_request_sample(ctx->avctx, "alpha");
206 
207  ctx->height = AV_RB16(buf + 0x18);
208  ctx->width = AV_RB16(buf + 0x1a);
209 
210  switch(buf[0x21] >> 5) {
211  case 1: bitdepth = 8; break;
212  case 2: bitdepth = 10; break;
213  case 3: bitdepth = 12; break;
214  default:
215  av_log(ctx->avctx, AV_LOG_ERROR,
216  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
217  return AVERROR_INVALIDDATA;
218  }
219 
220  cid = AV_RB32(buf + 0x28);
221 
222  ctx->avctx->profile = dnxhd_get_profile(cid);
223 
224  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
225  return ret;
226  if (ctx->mbaff && ctx->cid_table->cid != 1260)
228  "Adaptive MB interlace flag in an unsupported profile.\n");
229 
230  switch ((buf[0x2C] >> 1) & 3) {
231  case 0: frame->colorspace = AVCOL_SPC_BT709; break;
232  case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
233  case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
234  case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
235  }
236 
237  ctx->act = buf[0x2C] & 1;
238  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
240  "Adaptive color transform in an unsupported profile.\n");
241 
242  ctx->is_444 = (buf[0x2C] >> 6) & 1;
243  if (ctx->is_444) {
244  if (bitdepth == 8) {
245  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
246  return AVERROR_INVALIDDATA;
247  } else if (bitdepth == 10) {
249  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
251  } else {
253  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
255  }
256  } else if (bitdepth == 12) {
259  } else if (bitdepth == 10) {
260  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
262  else
265  } else {
268  }
269 
270  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
271  if (ctx->bit_depth != old_bit_depth) {
272  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
273  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
276  }
277 
278  // make sure profile size constraints are respected
279  // DNx100 allows 1920->1440 and 1280->960 subsampling
280  if (ctx->width != ctx->cid_table->width &&
281  ctx->cid_table->width != DNXHD_VARIABLE) {
284  ctx->width, ctx->cid_table->width, 255);
285  ctx->width = ctx->cid_table->width;
286  }
287 
288  if (buf_size < ctx->cid_table->coding_unit_size) {
289  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
290  buf_size, ctx->cid_table->coding_unit_size);
291  return AVERROR_INVALIDDATA;
292  }
293 
294  ctx->mb_width = (ctx->width + 15)>> 4;
295  ctx->mb_height = AV_RB16(buf + 0x16c);
296 
297  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
298  ctx->height <<= 1;
299 
300  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
301  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
302  ctx->bit_depth, ctx->mbaff, ctx->act);
303 
304  // Newer format supports variable mb_scan_index sizes
305  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
306  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
307  } else {
308  if (ctx->mb_height > 68) {
309  av_log(ctx->avctx, AV_LOG_ERROR,
310  "mb height too big: %d\n", ctx->mb_height);
311  return AVERROR_INVALIDDATA;
312  }
313  ctx->data_offset = 0x280;
314  }
315  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
316  av_log(ctx->avctx, AV_LOG_ERROR,
317  "mb height too big: %d\n", ctx->mb_height);
318  return AVERROR_INVALIDDATA;
319  }
320 
321  if (buf_size < ctx->data_offset) {
322  av_log(ctx->avctx, AV_LOG_ERROR,
323  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
324  return AVERROR_INVALIDDATA;
325  }
326 
327  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
328  av_log(ctx->avctx, AV_LOG_ERROR,
329  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
330  return AVERROR_INVALIDDATA;
331  }
332 
333  for (i = 0; i < ctx->mb_height; i++) {
334  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
335  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
336  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
337  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
338  av_log(ctx->avctx, AV_LOG_ERROR,
339  "invalid mb scan index (%"PRIu32" vs %u).\n",
340  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
341  return AVERROR_INVALIDDATA;
342  }
343  }
344 
345  return 0;
346 }
347 
349  RowContext *row,
350  int n,
351  int index_bits,
352  int level_bias,
353  int level_shift,
354  int dc_shift)
355 {
356  int i, j, index1, index2, len, flags;
357  int level, component, sign;
358  const int *scale;
359  const uint8_t *weight_matrix;
360  const uint8_t *ac_info = ctx->cid_table->ac_info;
361  int16_t *block = row->blocks[n];
362  const int eob_index = ctx->cid_table->eob_index;
363  int ret = 0;
364  OPEN_READER(bs, &row->gb);
365 
366  ctx->bdsp.clear_block(block);
367 
368  if (!ctx->is_444) {
369  if (n & 2) {
370  component = 1 + (n & 1);
371  scale = row->chroma_scale;
372  weight_matrix = ctx->cid_table->chroma_weight;
373  } else {
374  component = 0;
375  scale = row->luma_scale;
376  weight_matrix = ctx->cid_table->luma_weight;
377  }
378  } else {
379  component = (n >> 1) % 3;
380  if (component) {
381  scale = row->chroma_scale;
382  weight_matrix = ctx->cid_table->chroma_weight;
383  } else {
384  scale = row->luma_scale;
385  weight_matrix = ctx->cid_table->luma_weight;
386  }
387  }
388 
389  UPDATE_CACHE(bs, &row->gb);
390  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
391  if (len < 0) {
392  ret = len;
393  goto error;
394  }
395  if (len) {
396  level = GET_CACHE(bs, &row->gb);
397  LAST_SKIP_BITS(bs, &row->gb, len);
398  sign = ~level >> 31;
399  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
400  row->last_dc[component] += level * (1 << dc_shift);
401  }
402  block[0] = row->last_dc[component];
403 
404  i = 0;
405 
406  UPDATE_CACHE(bs, &row->gb);
407  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
408  DNXHD_VLC_BITS, 2);
409 
410  while (index1 != eob_index) {
411  level = ac_info[2*index1+0];
412  flags = ac_info[2*index1+1];
413 
414  sign = SHOW_SBITS(bs, &row->gb, 1);
415  SKIP_BITS(bs, &row->gb, 1);
416 
417  if (flags & 1) {
418  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
419  SKIP_BITS(bs, &row->gb, index_bits);
420  }
421 
422  if (flags & 2) {
423  UPDATE_CACHE(bs, &row->gb);
424  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
425  DNXHD_VLC_BITS, 2);
426  i += ctx->cid_table->run[index2];
427  }
428 
429  if (++i > 63) {
430  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
431  ret = -1;
432  break;
433  }
434 
435  j = ctx->scantable.permutated[i];
436  level *= scale[i];
437  level += scale[i] >> 1;
438  if (level_bias < 32 || weight_matrix[i] != level_bias)
439  level += level_bias; // 1<<(level_shift-1)
440  level >>= level_shift;
441 
442  block[j] = (level ^ sign) - sign;
443 
444  UPDATE_CACHE(bs, &row->gb);
445  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
446  DNXHD_VLC_BITS, 2);
447  }
448 error:
449  CLOSE_READER(bs, &row->gb);
450  return ret;
451 }
452 
454  RowContext *row, int n)
455 {
456  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
457 }
458 
460  RowContext *row, int n)
461 {
462  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
463 }
464 
466  RowContext *row, int n)
467 {
468  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
469 }
470 
472  RowContext *row, int n)
473 {
474  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
475 }
476 
478  RowContext *row, int n)
479 {
480  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
481 }
482 
484  AVFrame *frame, int x, int y)
485 {
486  int shift1 = ctx->bit_depth >= 10;
487  int dct_linesize_luma = frame->linesize[0];
488  int dct_linesize_chroma = frame->linesize[1];
489  uint8_t *dest_y, *dest_u, *dest_v;
490  int dct_y_offset, dct_x_offset;
491  int qscale, i, act;
492  int interlaced_mb = 0;
493 
494  if (ctx->mbaff) {
495  interlaced_mb = get_bits1(&row->gb);
496  qscale = get_bits(&row->gb, 10);
497  } else {
498  qscale = get_bits(&row->gb, 11);
499  }
500  act = get_bits1(&row->gb);
501  if (act) {
502  if (!ctx->act) {
503  static int act_warned;
504  if (!act_warned) {
505  act_warned = 1;
506  av_log(ctx->avctx, AV_LOG_ERROR,
507  "ACT flag set, in violation of frame header.\n");
508  }
509  } else if (row->format == -1) {
510  row->format = act;
511  } else if (row->format != act) {
512  row->format = 2; // Variable
513  }
514  }
515 
516  if (qscale != row->last_qscale) {
517  for (i = 0; i < 64; i++) {
518  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
519  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
520  }
521  row->last_qscale = qscale;
522  }
523 
524  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
525  if (ctx->decode_dct_block(ctx, row, i) < 0)
526  return AVERROR_INVALIDDATA;
527  }
528 
529  if (frame->interlaced_frame) {
530  dct_linesize_luma <<= 1;
531  dct_linesize_chroma <<= 1;
532  }
533 
534  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
535  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
536  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
537 
538  if (frame->interlaced_frame && ctx->cur_field) {
539  dest_y += frame->linesize[0];
540  dest_u += frame->linesize[1];
541  dest_v += frame->linesize[2];
542  }
543  if (interlaced_mb) {
544  dct_linesize_luma <<= 1;
545  dct_linesize_chroma <<= 1;
546  }
547 
548  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
549  dct_x_offset = 8 << shift1;
550  if (!ctx->is_444) {
551  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
552  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
553  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
554  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
555 
556  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
557  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
558  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
559  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
560  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
561  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
562  }
563  } else {
564  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
565  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
566  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
567  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
568 
569  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
570  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
571  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
572  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
573  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
574  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
575  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
576  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
577  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
578  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
579  }
580  }
581 
582  return 0;
583 }
584 
586  int rownb, int threadnb)
587 {
588  const DNXHDContext *ctx = avctx->priv_data;
589  uint32_t offset = ctx->mb_scan_index[rownb];
590  RowContext *row = ctx->rows + threadnb;
591  int x, ret;
592 
593  row->last_dc[0] =
594  row->last_dc[1] =
595  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
596  ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
597  if (ret < 0) {
598  row->errors++;
599  return ret;
600  }
601  for (x = 0; x < ctx->mb_width; x++) {
602  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
603  if (ret < 0) {
604  row->errors++;
605  return ret;
606  }
607  }
608 
609  return 0;
610 }
611 
613  int *got_frame, AVPacket *avpkt)
614 {
615  const uint8_t *buf = avpkt->data;
616  int buf_size = avpkt->size;
617  DNXHDContext *ctx = avctx->priv_data;
618  ThreadFrame frame = { .f = data };
619  AVFrame *picture = data;
620  int first_field = 1;
621  int ret, i;
622 
623  ff_dlog(avctx, "frame size %d\n", buf_size);
624 
625  for (i = 0; i < avctx->thread_count; i++)
626  ctx->rows[i].format = -1;
627 
628 decode_coding_unit:
629  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
630  return ret;
631 
632  if ((avctx->width || avctx->height) &&
633  (ctx->width != avctx->width || ctx->height != avctx->height)) {
634  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
635  avctx->width, avctx->height, ctx->width, ctx->height);
636  first_field = 1;
637  }
638  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
639  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
641  first_field = 1;
642  }
643 
644  avctx->pix_fmt = ctx->pix_fmt;
645  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
646  if (ret < 0)
647  return ret;
648 
649  if (first_field) {
650  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
651  return ret;
652  picture->pict_type = AV_PICTURE_TYPE_I;
653  picture->key_frame = 1;
654  }
655 
656  ctx->buf_size = buf_size - ctx->data_offset;
657  ctx->buf = buf + ctx->data_offset;
658  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
659 
660  if (first_field && picture->interlaced_frame) {
661  buf += ctx->cid_table->coding_unit_size;
662  buf_size -= ctx->cid_table->coding_unit_size;
663  first_field = 0;
664  goto decode_coding_unit;
665  }
666 
667  ret = 0;
668  for (i = 0; i < avctx->thread_count; i++) {
669  ret += ctx->rows[i].errors;
670  ctx->rows[i].errors = 0;
671  }
672 
673  if (ctx->act) {
674  static int act_warned;
675  int format = ctx->rows[0].format;
676  for (i = 1; i < avctx->thread_count; i++) {
677  if (ctx->rows[i].format != format &&
678  ctx->rows[i].format != -1 /* not run */) {
679  format = 2;
680  break;
681  }
682  }
683  switch (format) {
684  case -1:
685  case 2:
686  if (!act_warned) {
687  act_warned = 1;
688  av_log(ctx->avctx, AV_LOG_ERROR,
689  "Unsupported: variable ACT flag.\n");
690  }
691  break;
692  case 0:
693  ctx->pix_fmt = ctx->bit_depth==10
695  break;
696  case 1:
697  ctx->pix_fmt = ctx->bit_depth==10
699  break;
700  }
701  }
702  avctx->pix_fmt = ctx->pix_fmt;
703  if (ret) {
704  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
705  return AVERROR_INVALIDDATA;
706  }
707 
708  *got_frame = 1;
709  return avpkt->size;
710 }
711 
713 {
714  DNXHDContext *ctx = avctx->priv_data;
715 
716  ff_free_vlc(&ctx->ac_vlc);
717  ff_free_vlc(&ctx->dc_vlc);
718  ff_free_vlc(&ctx->run_vlc);
719 
720  av_freep(&ctx->rows);
721 
722  return 0;
723 }
724 
726  .name = "dnxhd",
727  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
728  .type = AVMEDIA_TYPE_VIDEO,
729  .id = AV_CODEC_ID_DNXHD,
730  .priv_data_size = sizeof(DNXHDContext),
732  .close = dnxhd_decode_close,
734  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
737 };
#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:1970
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:453
#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
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:155
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:712
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:471
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:348
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:585
#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:188
#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:465
#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:483
#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:459
main external API structure.
Definition: avcodec.h:526
long long int64_t
Definition: coverity.c:34
#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:264
#define flags(name, subs,...)
Definition: cbs_av1.c:576
#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:210
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.
if(ret< 0)
Definition: vf_mcdeint.c:279
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:612
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:725
const CIDEntry * cid_table
Definition: dnxhddec.c:66
FILE * out
Definition: movenc.c:54
#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:172
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:477
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:190