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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[256];
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 mbaff;
71  int act;
73  RowContext *row, int n);
74 } DNXHDContext;
75 
76 #define DNXHD_VLC_BITS 9
77 #define DNXHD_DC_VLC_BITS 7
78 
79 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
80  RowContext *row, int n);
82  RowContext *row, int n);
84  RowContext *row, int n);
86  RowContext *row, int n);
88  RowContext *row, int n);
89 
91 {
92  DNXHDContext *ctx = avctx->priv_data;
93 
94  ctx->avctx = avctx;
95  ctx->cid = -1;
96  avctx->colorspace = AVCOL_SPC_BT709;
97 
98  avctx->coded_width = FFALIGN(avctx->width, 16);
99  avctx->coded_height = FFALIGN(avctx->height, 16);
100 
101  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
102  if (!ctx->rows)
103  return AVERROR(ENOMEM);
104 
105  return 0;
106 }
107 
108 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
109 {
110  if (cid != ctx->cid) {
111  int index;
112 
113  if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
114  av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
115  return AVERROR(ENOSYS);
116  }
117  if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
119  av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
120  return AVERROR_INVALIDDATA;
121  }
123  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);
124 
125  ff_free_vlc(&ctx->ac_vlc);
126  ff_free_vlc(&ctx->dc_vlc);
127  ff_free_vlc(&ctx->run_vlc);
128 
129  init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
130  ctx->cid_table->ac_bits, 1, 1,
131  ctx->cid_table->ac_codes, 2, 2, 0);
132  init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
133  ctx->cid_table->dc_bits, 1, 1,
134  ctx->cid_table->dc_codes, 1, 1, 0);
135  init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
136  ctx->cid_table->run_bits, 1, 1,
137  ctx->cid_table->run_codes, 2, 2, 0);
138 
139  ctx->cid = cid;
140  }
141  return 0;
142 }
143 
145 {
146  DNXHDContext *ctx = avctx->priv_data;
147 
148  // make sure VLC tables will be loaded when cid is parsed
149  ctx->cid = -1;
150 
151  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
152  if (!ctx->rows)
153  return AVERROR(ENOMEM);
154 
155  return 0;
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 
206  ctx->height = AV_RB16(buf + 0x18);
207  ctx->width = AV_RB16(buf + 0x1a);
208 
209  switch(buf[0x21] >> 5) {
210  case 1: bitdepth = 8; break;
211  case 2: bitdepth = 10; break;
212  case 3: bitdepth = 12; break;
213  default:
214  av_log(ctx->avctx, AV_LOG_ERROR,
215  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
216  return AVERROR_INVALIDDATA;
217  }
218 
219  cid = AV_RB32(buf + 0x28);
220 
221  ctx->avctx->profile = dnxhd_get_profile(cid);
222 
223  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
224  return ret;
225  if (ctx->mbaff && ctx->cid_table->cid != 1260)
227  "Adaptive MB interlace flag in an unsupported profile.\n");
228 
229  ctx->act = buf[0x2C] & 7;
230  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
232  "Adaptive color transform in an unsupported profile.\n");
233 
234  ctx->is_444 = (buf[0x2C] >> 6) & 1;
235  if (ctx->is_444) {
236  if (bitdepth == 8) {
237  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
238  return AVERROR_INVALIDDATA;
239  } else if (bitdepth == 10) {
241  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
243  } else {
245  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
247  }
248  } else if (bitdepth == 12) {
251  } else if (bitdepth == 10) {
252  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
254  else
257  } else {
260  }
261 
262  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
263  if (ctx->bit_depth != old_bit_depth) {
264  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
265  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
268  }
269 
270  // make sure profile size constraints are respected
271  // DNx100 allows 1920->1440 and 1280->960 subsampling
272  if (ctx->width != ctx->cid_table->width &&
273  ctx->cid_table->width != DNXHD_VARIABLE) {
276  ctx->width, ctx->cid_table->width, 255);
277  ctx->width = ctx->cid_table->width;
278  }
279 
280  if (buf_size < ctx->cid_table->coding_unit_size) {
281  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
282  buf_size, ctx->cid_table->coding_unit_size);
283  return AVERROR_INVALIDDATA;
284  }
285 
286  ctx->mb_width = (ctx->width + 15)>> 4;
287  ctx->mb_height = buf[0x16d];
288 
289  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
290  ctx->height <<= 1;
291 
292  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
293  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
294  ctx->bit_depth, ctx->mbaff, ctx->act);
295 
296  // Newer format supports variable mb_scan_index sizes
297  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
298  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
299  } else {
300  if (ctx->mb_height > 68 ||
301  (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
302  av_log(ctx->avctx, AV_LOG_ERROR,
303  "mb height too big: %d\n", ctx->mb_height);
304  return AVERROR_INVALIDDATA;
305  }
306  ctx->data_offset = 0x280;
307  }
308 
309  if (buf_size < ctx->data_offset) {
310  av_log(ctx->avctx, AV_LOG_ERROR,
311  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
312  return AVERROR_INVALIDDATA;
313  }
314 
315  av_assert0((unsigned)ctx->mb_height <= FF_ARRAY_ELEMS(ctx->mb_scan_index));
316 
317  for (i = 0; i < ctx->mb_height; i++) {
318  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
319  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %u\n", i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
320  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
321  av_log(ctx->avctx, AV_LOG_ERROR,
322  "invalid mb scan index (%u vs %u).\n",
323  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
324  return AVERROR_INVALIDDATA;
325  }
326  }
327 
328  return 0;
329 }
330 
332  RowContext *row,
333  int n,
334  int index_bits,
335  int level_bias,
336  int level_shift,
337  int dc_shift)
338 {
339  int i, j, index1, index2, len, flags;
340  int level, component, sign;
341  const int *scale;
342  const uint8_t *weight_matrix;
343  const uint8_t *ac_info = ctx->cid_table->ac_info;
344  int16_t *block = row->blocks[n];
345  const int eob_index = ctx->cid_table->eob_index;
346  int ret = 0;
347  OPEN_READER(bs, &row->gb);
348 
349  ctx->bdsp.clear_block(block);
350 
351  if (!ctx->is_444) {
352  if (n & 2) {
353  component = 1 + (n & 1);
354  scale = row->chroma_scale;
355  weight_matrix = ctx->cid_table->chroma_weight;
356  } else {
357  component = 0;
358  scale = row->luma_scale;
359  weight_matrix = ctx->cid_table->luma_weight;
360  }
361  } else {
362  component = (n >> 1) % 3;
363  if (component) {
364  scale = row->chroma_scale;
365  weight_matrix = ctx->cid_table->chroma_weight;
366  } else {
367  scale = row->luma_scale;
368  weight_matrix = ctx->cid_table->luma_weight;
369  }
370  }
371 
372  UPDATE_CACHE(bs, &row->gb);
373  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
374  if (len) {
375  level = GET_CACHE(bs, &row->gb);
376  LAST_SKIP_BITS(bs, &row->gb, len);
377  sign = ~level >> 31;
378  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
379  row->last_dc[component] += level * (1 << dc_shift);
380  }
381  block[0] = row->last_dc[component];
382 
383  i = 0;
384 
385  UPDATE_CACHE(bs, &row->gb);
386  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
387  DNXHD_VLC_BITS, 2);
388 
389  while (index1 != eob_index) {
390  level = ac_info[2*index1+0];
391  flags = ac_info[2*index1+1];
392 
393  sign = SHOW_SBITS(bs, &row->gb, 1);
394  SKIP_BITS(bs, &row->gb, 1);
395 
396  if (flags & 1) {
397  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
398  SKIP_BITS(bs, &row->gb, index_bits);
399  }
400 
401  if (flags & 2) {
402  UPDATE_CACHE(bs, &row->gb);
403  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
404  DNXHD_VLC_BITS, 2);
405  i += ctx->cid_table->run[index2];
406  }
407 
408  if (++i > 63) {
409  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
410  ret = -1;
411  break;
412  }
413 
414  j = ctx->scantable.permutated[i];
415  level *= scale[i];
416  level += scale[i] >> 1;
417  if (level_bias < 32 || weight_matrix[i] != level_bias)
418  level += level_bias; // 1<<(level_shift-1)
419  level >>= level_shift;
420 
421  block[j] = (level ^ sign) - sign;
422 
423  UPDATE_CACHE(bs, &row->gb);
424  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
425  DNXHD_VLC_BITS, 2);
426  }
427 
428  CLOSE_READER(bs, &row->gb);
429  return ret;
430 }
431 
433  RowContext *row, int n)
434 {
435  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
436 }
437 
439  RowContext *row, int n)
440 {
441  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
442 }
443 
445  RowContext *row, int n)
446 {
447  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
448 }
449 
451  RowContext *row, int n)
452 {
453  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
454 }
455 
457  RowContext *row, int n)
458 {
459  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
460 }
461 
463  AVFrame *frame, int x, int y)
464 {
465  int shift1 = ctx->bit_depth >= 10;
466  int dct_linesize_luma = frame->linesize[0];
467  int dct_linesize_chroma = frame->linesize[1];
468  uint8_t *dest_y, *dest_u, *dest_v;
469  int dct_y_offset, dct_x_offset;
470  int qscale, i, act;
471  int interlaced_mb = 0;
472 
473  if (ctx->mbaff) {
474  interlaced_mb = get_bits1(&row->gb);
475  qscale = get_bits(&row->gb, 10);
476  } else {
477  qscale = get_bits(&row->gb, 11);
478  }
479  act = get_bits1(&row->gb);
480  if (act) {
481  if (!ctx->act) {
482  static int act_warned;
483  if (!act_warned) {
484  act_warned = 1;
485  av_log(ctx->avctx, AV_LOG_ERROR,
486  "ACT flag set, in violation of frame header.\n");
487  }
488  } else if (row->format == -1) {
489  row->format = act;
490  } else if (row->format != act) {
491  row->format = 2; // Variable
492  }
493  }
494 
495  if (qscale != row->last_qscale) {
496  for (i = 0; i < 64; i++) {
497  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
498  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
499  }
500  row->last_qscale = qscale;
501  }
502 
503  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
504  if (ctx->decode_dct_block(ctx, row, i) < 0)
505  return AVERROR_INVALIDDATA;
506  }
507 
508  if (frame->interlaced_frame) {
509  dct_linesize_luma <<= 1;
510  dct_linesize_chroma <<= 1;
511  }
512 
513  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
514  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
515  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
516 
517  if (frame->interlaced_frame && ctx->cur_field) {
518  dest_y += frame->linesize[0];
519  dest_u += frame->linesize[1];
520  dest_v += frame->linesize[2];
521  }
522  if (interlaced_mb) {
523  dct_linesize_luma <<= 1;
524  dct_linesize_chroma <<= 1;
525  }
526 
527  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
528  dct_x_offset = 8 << shift1;
529  if (!ctx->is_444) {
530  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
531  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
532  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
533  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
534 
535  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
536  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
537  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
538  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
539  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
540  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
541  }
542  } else {
543  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
544  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
545  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
546  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
547 
548  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
549  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
550  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
551  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
552  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
553  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
554  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
555  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
556  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
557  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
558  }
559  }
560 
561  return 0;
562 }
563 
565  int rownb, int threadnb)
566 {
567  const DNXHDContext *ctx = avctx->priv_data;
568  uint32_t offset = ctx->mb_scan_index[rownb];
569  RowContext *row = ctx->rows + threadnb;
570  int x;
571 
572  row->last_dc[0] =
573  row->last_dc[1] =
574  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
575  init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
576  for (x = 0; x < ctx->mb_width; x++) {
577  //START_TIMER;
578  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
579  if (ret < 0) {
580  row->errors++;
581  return ret;
582  }
583  //STOP_TIMER("decode macroblock");
584  }
585 
586  return 0;
587 }
588 
590  int *got_frame, AVPacket *avpkt)
591 {
592  const uint8_t *buf = avpkt->data;
593  int buf_size = avpkt->size;
594  DNXHDContext *ctx = avctx->priv_data;
595  ThreadFrame frame = { .f = data };
596  AVFrame *picture = data;
597  int first_field = 1;
598  int ret, i;
599 
600  ff_dlog(avctx, "frame size %d\n", buf_size);
601 
602  for (i = 0; i < avctx->thread_count; i++)
603  ctx->rows[i].format = -1;
604 
605 decode_coding_unit:
606  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
607  return ret;
608 
609  if ((avctx->width || avctx->height) &&
610  (ctx->width != avctx->width || ctx->height != avctx->height)) {
611  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
612  avctx->width, avctx->height, ctx->width, ctx->height);
613  first_field = 1;
614  }
615  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
616  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
618  first_field = 1;
619  }
620 
621  avctx->pix_fmt = ctx->pix_fmt;
622  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
623  if (ret < 0)
624  return ret;
625 
626  if (first_field) {
627  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
628  return ret;
629  picture->pict_type = AV_PICTURE_TYPE_I;
630  picture->key_frame = 1;
631  }
632 
633  ctx->buf_size = buf_size - ctx->data_offset;
634  ctx->buf = buf + ctx->data_offset;
635  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
636 
637  if (first_field && picture->interlaced_frame) {
638  buf += ctx->cid_table->coding_unit_size;
639  buf_size -= ctx->cid_table->coding_unit_size;
640  first_field = 0;
641  goto decode_coding_unit;
642  }
643 
644  ret = 0;
645  for (i = 0; i < avctx->thread_count; i++) {
646  ret += ctx->rows[i].errors;
647  ctx->rows[i].errors = 0;
648  }
649 
650  if (ctx->act) {
651  static int act_warned;
652  int format = ctx->rows[0].format;
653  for (i = 1; i < avctx->thread_count; i++) {
654  if (ctx->rows[i].format != format &&
655  ctx->rows[i].format != -1 /* not run */) {
656  format = 2;
657  break;
658  }
659  }
660  switch (format) {
661  case -1:
662  case 2:
663  if (!act_warned) {
664  act_warned = 1;
665  av_log(ctx->avctx, AV_LOG_ERROR,
666  "Unsupported: variable ACT flag.\n");
667  }
668  break;
669  case 0:
670  ctx->pix_fmt = ctx->bit_depth==10
672  break;
673  case 1:
674  ctx->pix_fmt = ctx->bit_depth==10
676  break;
677  }
678  }
679  avctx->pix_fmt = ctx->pix_fmt;
680  if (ret) {
681  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
682  return AVERROR_INVALIDDATA;
683  }
684 
685  *got_frame = 1;
686  return avpkt->size;
687 }
688 
690 {
691  DNXHDContext *ctx = avctx->priv_data;
692 
693  ff_free_vlc(&ctx->ac_vlc);
694  ff_free_vlc(&ctx->dc_vlc);
695  ff_free_vlc(&ctx->run_vlc);
696 
697  av_freep(&ctx->rows);
698 
699  return 0;
700 }
701 
703  .name = "dnxhd",
704  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
705  .type = AVMEDIA_TYPE_VIDEO,
706  .id = AV_CODEC_ID_DNXHD,
707  .priv_data_size = sizeof(DNXHDContext),
709  .close = dnxhd_decode_close,
711  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
715 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:3240
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:453
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:432
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:187
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:1924
int64_t cid
compression id
Definition: dnxhddec.c:57
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:158
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
#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:210
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:144
Scantable.
Definition: idctdsp.h:29
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1648
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:367
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:2133
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:1950
int errors
Definition: dnxhddec.c:46
uint8_t permutated[64]
Definition: idctdsp.h:31
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3123
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:3225
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3671
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:689
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
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:450
const AVProfile ff_dnxhd_profiles[]
Definition: profiles.c:49
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:101
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:331
uint8_t * data
Definition: avcodec.h:1647
int format
-1:not set yet 0:off=RGB 1:on=YUV 2:variable
Definition: dnxhddec.c:48
static int flags
Definition: log.c:57
#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:76
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:325
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:77
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:356
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:896
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:160
#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:1090
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:564
#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:180
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1817
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:3678
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:3241
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
#define CLOSE_READER(name, gb)
Definition: get_bits.h:131
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:444
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1057
static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
Definition: dnxhddata.h:87
Definition: vlc.h:26
uint32_t mb_scan_index[256]
Definition: dnxhddec.c:61
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
const uint8_t * chroma_weight
Definition: dnxhddata.h:51
#define SKIP_BITS(name, gb, num)
Definition: get_bits.h:175
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:219
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:261
int width
picture width / height.
Definition: avcodec.h:1909
#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:150
AVFormatContext * ctx
Definition: movenc.c:48
#define LAST_SKIP_BITS(name, gb, num)
Definition: get_bits.h:181
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:477
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:94
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:3243
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:462
#define SHOW_UBITS(name, gb, num)
Definition: get_bits.h:193
#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:3151
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1061
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:218
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:438
main external API structure.
Definition: avcodec.h:1722
#define OPEN_READER(name, gb)
Definition: get_bits.h:120
void * buf
Definition: avisynth_c.h:690
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:313
int coded_height
Definition: avcodec.h:1924
static const char * format
Definition: movenc.c:47
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:2452
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:68
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:425
#define GET_CACHE(name, gb)
Definition: get_bits.h:197
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
#define FF_PROFILE_DNXHR_SQ
Definition: avcodec.h:3242
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:368
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:352
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:358
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:108
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:201
uint8_t level
Definition: svq3.c:207
#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:194
int
#define FF_PROFILE_DNXHR_HQX
Definition: avcodec.h:3244
GetBitContext gb
Definition: dnxhddec.c:43
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:70
int data_offset
Definition: dnxhddec.c:62
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:72
int den
Denominator.
Definition: rational.h:60
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:3245
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1764
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:241
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:330
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:589
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:3211
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:256
BlockDSPContext bdsp
Definition: dnxhddec.c:54
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:702
const CIDEntry * cid_table
Definition: dnxhddec.c:67
#define av_freep(p)
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: ffmpeg.c:2242
#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:175
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:2249
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1624
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:353
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:994
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:456
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:90