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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/timer.h"
29 #include "avcodec.h"
30 #include "blockdsp.h"
31 #define UNCHECKED_BITSTREAM_READER 1
32 #include "get_bits.h"
33 #include "dnxhddata.h"
34 #include "idctdsp.h"
35 #include "internal.h"
36 #include "profiles.h"
37 #include "thread.h"
38 
39 typedef struct RowContext {
40  DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
41  int luma_scale[64];
42  int chroma_scale[64];
44  int last_dc[3];
46  int errors;
47  /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
48  int format;
49 } RowContext;
50 
51 typedef struct DNXHDContext {
55  const uint8_t* buf;
56  int buf_size;
57  int64_t cid; ///< compression id
58  unsigned int width, height;
60  unsigned int mb_width, mb_height;
61  uint32_t mb_scan_index[512];
62  int data_offset; // End of mb_scan_index, where macroblocks start
63  int cur_field; ///< current interlaced field
68  int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
69  int is_444;
70  int alpha;
71  int lla;
72  int mbaff;
73  int act;
75  RowContext *row, int n);
76 } DNXHDContext;
77 
78 #define DNXHD_VLC_BITS 9
79 #define DNXHD_DC_VLC_BITS 7
80 
81 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
82  RowContext *row, int n);
84  RowContext *row, int n);
86  RowContext *row, int n);
88  RowContext *row, int n);
90  RowContext *row, int n);
91 
93 {
94  DNXHDContext *ctx = avctx->priv_data;
95 
96  ctx->avctx = avctx;
97  ctx->cid = -1;
98  if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
99  avctx->colorspace = AVCOL_SPC_BT709;
100  }
101 
102  avctx->coded_width = FFALIGN(avctx->width, 16);
103  avctx->coded_height = FFALIGN(avctx->height, 16);
104 
105  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
106  if (!ctx->rows)
107  return AVERROR(ENOMEM);
108 
109  return 0;
110 }
111 
112 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
113 {
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  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);
136  init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
137  ctx->cid_table->dc_bits, 1, 1,
138  ctx->cid_table->dc_codes, 1, 1, 0);
139  init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
140  ctx->cid_table->run_bits, 1, 1,
141  ctx->cid_table->run_codes, 2, 2, 0);
142 
143  ctx->cid = cid;
144  }
145  return 0;
146 }
147 
149 {
150  DNXHDContext *ctx = avctx->priv_data;
151 
152  ctx->avctx = avctx;
153  // make sure VLC tables will be loaded when cid is parsed
154  ctx->cid = -1;
155 
156  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
157  if (!ctx->rows)
158  return AVERROR(ENOMEM);
159 
160  return 0;
161 }
162 
163 static int dnxhd_get_profile(int cid)
164 {
165  switch(cid) {
166  case 1270:
167  return FF_PROFILE_DNXHR_444;
168  case 1271:
169  return FF_PROFILE_DNXHR_HQX;
170  case 1272:
171  return FF_PROFILE_DNXHR_HQ;
172  case 1273:
173  return FF_PROFILE_DNXHR_SQ;
174  case 1274:
175  return FF_PROFILE_DNXHR_LB;
176  }
177  return FF_PROFILE_DNXHD;
178 }
179 
181  const uint8_t *buf, int buf_size,
182  int first_field)
183 {
184  int i, cid, ret;
185  int old_bit_depth = ctx->bit_depth, bitdepth;
186  uint64_t header_prefix;
187  if (buf_size < 0x280) {
188  av_log(ctx->avctx, AV_LOG_ERROR,
189  "buffer too small (%d < 640).\n", buf_size);
190  return AVERROR_INVALIDDATA;
191  }
192 
193  header_prefix = ff_dnxhd_parse_header_prefix(buf);
194  if (header_prefix == 0) {
195  av_log(ctx->avctx, AV_LOG_ERROR,
196  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
197  buf[0], buf[1], buf[2], buf[3], buf[4]);
198  return AVERROR_INVALIDDATA;
199  }
200  if (buf[5] & 2) { /* interlaced */
201  ctx->cur_field = buf[5] & 1;
202  frame->interlaced_frame = 1;
203  frame->top_field_first = first_field ^ ctx->cur_field;
204  av_log(ctx->avctx, AV_LOG_DEBUG,
205  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
206  } else {
207  ctx->cur_field = 0;
208  }
209  ctx->mbaff = (buf[0x6] >> 5) & 1;
210  ctx->alpha = buf[0x7] & 1;
211  ctx->lla = (buf[0x7] >> 1) & 1;
212  if (ctx->alpha)
213  avpriv_request_sample(ctx->avctx, "alpha");
214 
215  ctx->height = AV_RB16(buf + 0x18);
216  ctx->width = AV_RB16(buf + 0x1a);
217 
218  switch(buf[0x21] >> 5) {
219  case 1: bitdepth = 8; break;
220  case 2: bitdepth = 10; break;
221  case 3: bitdepth = 12; break;
222  default:
223  av_log(ctx->avctx, AV_LOG_ERROR,
224  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
225  return AVERROR_INVALIDDATA;
226  }
227 
228  cid = AV_RB32(buf + 0x28);
229 
230  ctx->avctx->profile = dnxhd_get_profile(cid);
231 
232  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
233  return ret;
234  if (ctx->mbaff && ctx->cid_table->cid != 1260)
236  "Adaptive MB interlace flag in an unsupported profile.\n");
237 
238  ctx->act = buf[0x2C] & 7;
239  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
241  "Adaptive color transform in an unsupported profile.\n");
242 
243  ctx->is_444 = (buf[0x2C] >> 6) & 1;
244  if (ctx->is_444) {
245  if (bitdepth == 8) {
246  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
247  return AVERROR_INVALIDDATA;
248  } else if (bitdepth == 10) {
250  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
252  } else {
254  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
256  }
257  } else if (bitdepth == 12) {
260  } else if (bitdepth == 10) {
261  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
263  else
266  } else {
269  }
270 
271  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
272  if (ctx->bit_depth != old_bit_depth) {
273  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
274  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
277  }
278 
279  // make sure profile size constraints are respected
280  // DNx100 allows 1920->1440 and 1280->960 subsampling
281  if (ctx->width != ctx->cid_table->width &&
282  ctx->cid_table->width != DNXHD_VARIABLE) {
285  ctx->width, ctx->cid_table->width, 255);
286  ctx->width = ctx->cid_table->width;
287  }
288 
289  if (buf_size < ctx->cid_table->coding_unit_size) {
290  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
291  buf_size, ctx->cid_table->coding_unit_size);
292  return AVERROR_INVALIDDATA;
293  }
294 
295  ctx->mb_width = (ctx->width + 15)>> 4;
296  ctx->mb_height = AV_RB16(buf + 0x16c);
297 
298  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
299  ctx->height <<= 1;
300 
301  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
302  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
303  ctx->bit_depth, ctx->mbaff, ctx->act);
304 
305  // Newer format supports variable mb_scan_index sizes
306  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
307  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
308  } else {
309  if (ctx->mb_height > 68) {
310  av_log(ctx->avctx, AV_LOG_ERROR,
311  "mb height too big: %d\n", ctx->mb_height);
312  return AVERROR_INVALIDDATA;
313  }
314  ctx->data_offset = 0x280;
315  }
316  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
317  av_log(ctx->avctx, AV_LOG_ERROR,
318  "mb height too big: %d\n", ctx->mb_height);
319  return AVERROR_INVALIDDATA;
320  }
321 
322  if (buf_size < ctx->data_offset) {
323  av_log(ctx->avctx, AV_LOG_ERROR,
324  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
325  return AVERROR_INVALIDDATA;
326  }
327 
328  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
329  av_log(ctx->avctx, AV_LOG_ERROR,
330  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
331  return AVERROR_INVALIDDATA;
332  }
333 
334  for (i = 0; i < ctx->mb_height; i++) {
335  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
336  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
337  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
338  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
339  av_log(ctx->avctx, AV_LOG_ERROR,
340  "invalid mb scan index (%"PRIu32" vs %u).\n",
341  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
342  return AVERROR_INVALIDDATA;
343  }
344  }
345 
346  return 0;
347 }
348 
350  RowContext *row,
351  int n,
352  int index_bits,
353  int level_bias,
354  int level_shift,
355  int dc_shift)
356 {
357  int i, j, index1, index2, len, flags;
358  int level, component, sign;
359  const int *scale;
360  const uint8_t *weight_matrix;
361  const uint8_t *ac_info = ctx->cid_table->ac_info;
362  int16_t *block = row->blocks[n];
363  const int eob_index = ctx->cid_table->eob_index;
364  int ret = 0;
365  OPEN_READER(bs, &row->gb);
366 
367  ctx->bdsp.clear_block(block);
368 
369  if (!ctx->is_444) {
370  if (n & 2) {
371  component = 1 + (n & 1);
372  scale = row->chroma_scale;
373  weight_matrix = ctx->cid_table->chroma_weight;
374  } else {
375  component = 0;
376  scale = row->luma_scale;
377  weight_matrix = ctx->cid_table->luma_weight;
378  }
379  } else {
380  component = (n >> 1) % 3;
381  if (component) {
382  scale = row->chroma_scale;
383  weight_matrix = ctx->cid_table->chroma_weight;
384  } else {
385  scale = row->luma_scale;
386  weight_matrix = ctx->cid_table->luma_weight;
387  }
388  }
389 
390  UPDATE_CACHE(bs, &row->gb);
391  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
392  if (len < 0) {
393  ret = len;
394  goto error;
395  }
396  if (len) {
397  level = GET_CACHE(bs, &row->gb);
398  LAST_SKIP_BITS(bs, &row->gb, len);
399  sign = ~level >> 31;
400  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
401  row->last_dc[component] += level * (1 << dc_shift);
402  }
403  block[0] = row->last_dc[component];
404 
405  i = 0;
406 
407  UPDATE_CACHE(bs, &row->gb);
408  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
409  DNXHD_VLC_BITS, 2);
410 
411  while (index1 != eob_index) {
412  level = ac_info[2*index1+0];
413  flags = ac_info[2*index1+1];
414 
415  sign = SHOW_SBITS(bs, &row->gb, 1);
416  SKIP_BITS(bs, &row->gb, 1);
417 
418  if (flags & 1) {
419  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
420  SKIP_BITS(bs, &row->gb, index_bits);
421  }
422 
423  if (flags & 2) {
424  UPDATE_CACHE(bs, &row->gb);
425  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
426  DNXHD_VLC_BITS, 2);
427  i += ctx->cid_table->run[index2];
428  }
429 
430  if (++i > 63) {
431  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
432  ret = -1;
433  break;
434  }
435 
436  j = ctx->scantable.permutated[i];
437  level *= scale[i];
438  level += scale[i] >> 1;
439  if (level_bias < 32 || weight_matrix[i] != level_bias)
440  level += level_bias; // 1<<(level_shift-1)
441  level >>= level_shift;
442 
443  block[j] = (level ^ sign) - sign;
444 
445  UPDATE_CACHE(bs, &row->gb);
446  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
447  DNXHD_VLC_BITS, 2);
448  }
449 error:
450  CLOSE_READER(bs, &row->gb);
451  return ret;
452 }
453 
455  RowContext *row, int n)
456 {
457  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
458 }
459 
461  RowContext *row, int n)
462 {
463  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
464 }
465 
467  RowContext *row, int n)
468 {
469  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
470 }
471 
473  RowContext *row, int n)
474 {
475  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
476 }
477 
479  RowContext *row, int n)
480 {
481  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
482 }
483 
485  AVFrame *frame, int x, int y)
486 {
487  int shift1 = ctx->bit_depth >= 10;
488  int dct_linesize_luma = frame->linesize[0];
489  int dct_linesize_chroma = frame->linesize[1];
490  uint8_t *dest_y, *dest_u, *dest_v;
491  int dct_y_offset, dct_x_offset;
492  int qscale, i, act;
493  int interlaced_mb = 0;
494 
495  if (ctx->mbaff) {
496  interlaced_mb = get_bits1(&row->gb);
497  qscale = get_bits(&row->gb, 10);
498  } else {
499  qscale = get_bits(&row->gb, 11);
500  }
501  act = get_bits1(&row->gb);
502  if (act) {
503  if (!ctx->act) {
504  static int act_warned;
505  if (!act_warned) {
506  act_warned = 1;
507  av_log(ctx->avctx, AV_LOG_ERROR,
508  "ACT flag set, in violation of frame header.\n");
509  }
510  } else if (row->format == -1) {
511  row->format = act;
512  } else if (row->format != act) {
513  row->format = 2; // Variable
514  }
515  }
516 
517  if (qscale != row->last_qscale) {
518  for (i = 0; i < 64; i++) {
519  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
520  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
521  }
522  row->last_qscale = qscale;
523  }
524 
525  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
526  if (ctx->decode_dct_block(ctx, row, i) < 0)
527  return AVERROR_INVALIDDATA;
528  }
529 
530  if (frame->interlaced_frame) {
531  dct_linesize_luma <<= 1;
532  dct_linesize_chroma <<= 1;
533  }
534 
535  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
536  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
537  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
538 
539  if (frame->interlaced_frame && ctx->cur_field) {
540  dest_y += frame->linesize[0];
541  dest_u += frame->linesize[1];
542  dest_v += frame->linesize[2];
543  }
544  if (interlaced_mb) {
545  dct_linesize_luma <<= 1;
546  dct_linesize_chroma <<= 1;
547  }
548 
549  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
550  dct_x_offset = 8 << shift1;
551  if (!ctx->is_444) {
552  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
553  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
554  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
555  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
556 
557  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
558  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
559  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
560  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
561  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
562  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
563  }
564  } else {
565  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
566  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
567  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
568  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
569 
570  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
571  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
572  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
573  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
574  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
575  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
576  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
577  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
578  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
579  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
580  }
581  }
582 
583  return 0;
584 }
585 
587  int rownb, int threadnb)
588 {
589  const DNXHDContext *ctx = avctx->priv_data;
590  uint32_t offset = ctx->mb_scan_index[rownb];
591  RowContext *row = ctx->rows + threadnb;
592  int x, ret;
593 
594  row->last_dc[0] =
595  row->last_dc[1] =
596  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
597  ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
598  if (ret < 0) {
599  row->errors++;
600  return ret;
601  }
602  for (x = 0; x < ctx->mb_width; x++) {
603  //START_TIMER;
604  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
605  if (ret < 0) {
606  row->errors++;
607  return ret;
608  }
609  //STOP_TIMER("decode macroblock");
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;
620  DNXHDContext *ctx = avctx->priv_data;
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 {
717  DNXHDContext *ctx = avctx->priv_data;
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 |
741 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:2884
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:495
int cid
Definition: mxfenc.c:1993
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:454
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static const char * format[]
Definition: af_aiir.c:331
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
const uint8_t * dc_bits
Definition: dnxhddata.h:52
IDCTDSPContext idsp
Definition: dnxhddec.c:65
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
void(* clear_block)(int16_t *block)
Definition: blockdsp.h:36
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1728
int64_t cid
compression id
Definition: dnxhddec.c:57
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:163
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:381
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
const uint8_t * luma_weight
Definition: dnxhddata.h:51
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
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
static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
Definition: dnxhddec.c:148
Scantable.
Definition: idctdsp.h:31
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1453
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:400
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:1919
RowContext * rows
Definition: dnxhddec.c:53
VLC run_vlc
Definition: dnxhddec.c:64
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1750
int errors
Definition: dnxhddec.c:46
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:2767
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
int profile
profile
Definition: avcodec.h:2869
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3441
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
int luma_scale[64]
Definition: dnxhddec.c:41
const uint8_t * buf
Definition: dnxhddec.c:55
static int16_t block[64]
Definition: dct.c:115
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
Definition: dnxhddec.c:715
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint8_t
#define av_cold
Definition: attributes.h:82
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:472
const AVProfile ff_dnxhd_profiles[]
Definition: profiles.c:48
Multithreading support functions.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
static AVFrame * frame
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
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:349
uint8_t * data
Definition: avcodec.h:1452
int format
-1:not set yet 0:off=RGB 1:on=YUV 2:variable
Definition: dnxhddec.c:48
#define ff_dlog(a,...)
const uint8_t * run_bits
Definition: dnxhddata.h:56
bitstream reader API header.
int bit_depth
Definition: dnxhddec.c:68
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define DNXHD_VLC_BITS
Definition: dnxhddec.c:78
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:373
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:79
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:389
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:870
high precision timer, useful to profile code
#define FFALIGN(x, a)
Definition: macros.h:48
enum AVPixelFormat pix_fmt
Definition: dnxhddec.c:59
#define av_log(a,...)
static int first_field(const struct video_data *s)
Definition: v4l2.c:230
VLC ac_vlc
Definition: dnxhddec.c:64
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 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:586
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: vlc.h:38
#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:1620
unsigned int height
Definition: dnxhddec.c:58
const uint8_t * dc_codes
Definition: dnxhddata.h:52
const char * name
Name of the codec implementation.
Definition: avcodec.h:3448
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:387
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:2885
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
#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:466
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1024
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
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:225
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:309
int width
picture width / height.
Definition: avcodec.h:1713
#define NEG_USR32(a, s)
Definition: mathops.h:166
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:155
AVFormatContext * ctx
Definition: movenc.c:48
#define LAST_SKIP_BITS(name, gb, num)
Definition: get_bits.h:199
ScanTable scantable
Definition: dnxhddec.c:66
int n
Definition: avisynth_c.h:684
unsigned int mb_width
Definition: dnxhddec.c:60
#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:671
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:96
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:2887
static void error(const char *err)
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:484
#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:2795
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1028
int bit_depth
Definition: dnxhddata.h:49
unsigned int width
Definition: dnxhddec.c:58
Libavcodec external API header.
int last_qscale
Definition: dnxhddec.c:45
int16_t blocks[12][64]
Definition: dnxhddec.c:40
int cur_field
current interlaced field
Definition: dnxhddec.c:63
unsigned int mb_height
Definition: dnxhddec.c:60
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:650
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:460
main external API structure.
Definition: avcodec.h:1540
#define OPEN_READER(name, gb)
Definition: get_bits.h:138
void * buf
Definition: avisynth_c.h:690
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:487
int coded_height
Definition: avcodec.h:1728
int eob_index
Definition: dnxhddata.h:50
int index
Definition: gxfenc.c:89
int chroma_scale[64]
Definition: dnxhddec.c:42
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2164
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:2886
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:401
#define SIZE_SPECIFIER
Definition: internal.h:262
#define flags(name, subs,...)
Definition: cbs_av1.c:584
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:385
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:391
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:112
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
uint8_t level
Definition: svq3.c:207
uint32_t mb_scan_index[512]
Definition: dnxhddec.c:61
#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:2888
GetBitContext gb
Definition: dnxhddec.c:43
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:279
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
int data_offset
Definition: dnxhddec.c:62
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:74
int den
Denominator.
Definition: rational.h:60
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:2889
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1567
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:378
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:615
int len
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:2855
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
AVCodecContext * avctx
Definition: dnxhddec.c:52
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:304
BlockDSPContext bdsp
Definition: dnxhddec.c:54
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:728
const CIDEntry * cid_table
Definition: dnxhddec.c:67
#define av_freep(p)
#define av_always_inline
Definition: attributes.h:39
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:180
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:2414
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1429
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:354
int last_dc[3]
Definition: dnxhddec.c:44
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:968
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:478
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:92
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191