FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dnxhddec.c
Go to the documentation of this file.
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;
72  int (*decode_dct_block)(const struct DNXHDContext *ctx,
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  }
122  if (bitdepth > 10) {
123  avpriv_request_sample(ctx->avctx, "DNXHR 12-bit");
125  return AVERROR_PATCHWELCOME;
126  }
128  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);
129 
130  ff_free_vlc(&ctx->ac_vlc);
131  ff_free_vlc(&ctx->dc_vlc);
132  ff_free_vlc(&ctx->run_vlc);
133 
134  init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
135  ctx->cid_table->ac_bits, 1, 1,
136  ctx->cid_table->ac_codes, 2, 2, 0);
137  init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth + 4,
138  ctx->cid_table->dc_bits, 1, 1,
139  ctx->cid_table->dc_codes, 1, 1, 0);
140  init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
141  ctx->cid_table->run_bits, 1, 1,
142  ctx->cid_table->run_codes, 2, 2, 0);
143 
144  ctx->cid = cid;
145  }
146  return 0;
147 }
148 
150 {
151  DNXHDContext *ctx = avctx->priv_data;
152 
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 
211  ctx->height = AV_RB16(buf + 0x18);
212  ctx->width = AV_RB16(buf + 0x1a);
213 
214  switch(buf[0x21] >> 5) {
215  case 1: bitdepth = 8; break;
216  case 2: bitdepth = 10; break;
217  case 3: bitdepth = 12; break;
218  default:
219  av_log(ctx->avctx, AV_LOG_ERROR,
220  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
221  return AVERROR_INVALIDDATA;
222  }
223 
224  cid = AV_RB32(buf + 0x28);
225 
226  ctx->avctx->profile = dnxhd_get_profile(cid);
227 
228  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
229  return ret;
230  if (ctx->mbaff && ctx->cid_table->cid != 1260)
232  "Adaptive MB interlace flag in an unsupported profile.\n");
233 
234  ctx->act = buf[0x2C] & 7;
235  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
237  "Adaptive color transform in an unsupported profile.\n");
238 
239  ctx->is_444 = (buf[0x2C] >> 6) & 1;
240  if (ctx->is_444) {
241  if (bitdepth == 8) {
242  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits\n");
243  return AVERROR_INVALIDDATA;
244  } else if (bitdepth == 10) {
246  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
248  } else {
250  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
252  }
253  } else if (bitdepth == 12) {
256  } else if (bitdepth == 10) {
259  } else {
262  }
263 
264  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
265  if (ctx->bit_depth != old_bit_depth) {
266  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
267  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
270  }
271 
272  // make sure profile size constraints are respected
273  // DNx100 allows 1920->1440 and 1280->960 subsampling
274  if (ctx->width != ctx->cid_table->width &&
275  ctx->cid_table->width != DNXHD_VARIABLE) {
278  ctx->width, ctx->cid_table->width, 255);
279  ctx->width = ctx->cid_table->width;
280  }
281 
282  if (buf_size < ctx->cid_table->coding_unit_size) {
283  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %d).\n",
284  buf_size, ctx->cid_table->coding_unit_size);
285  return AVERROR_INVALIDDATA;
286  }
287 
288  ctx->mb_width = (ctx->width + 15)>> 4;
289  ctx->mb_height = buf[0x16d];
290 
291  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
292  ctx->height <<= 1;
293 
294  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
295  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
296  ctx->bit_depth, ctx->mbaff, ctx->act);
297 
298  // Newer format supports variable mb_scan_index sizes
299  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
300  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
301  } else {
302  if (ctx->mb_height > 68 ||
303  (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
304  av_log(ctx->avctx, AV_LOG_ERROR,
305  "mb height too big: %d\n", ctx->mb_height);
306  return AVERROR_INVALIDDATA;
307  }
308  ctx->data_offset = 0x280;
309  }
310 
311  if (buf_size < ctx->data_offset) {
312  av_log(ctx->avctx, AV_LOG_ERROR,
313  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
314  return AVERROR_INVALIDDATA;
315  }
316 
317  av_assert0((unsigned)ctx->mb_height <= FF_ARRAY_ELEMS(ctx->mb_scan_index));
318 
319  for (i = 0; i < ctx->mb_height; i++) {
320  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
321  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %u\n", i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
322  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
323  av_log(ctx->avctx, AV_LOG_ERROR,
324  "invalid mb scan index (%u vs %u).\n",
325  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
326  return AVERROR_INVALIDDATA;
327  }
328  }
329 
330  return 0;
331 }
332 
334  RowContext *row,
335  int n,
336  int index_bits,
337  int level_bias,
338  int level_shift,
339  int dc_shift)
340 {
341  int i, j, index1, index2, len, flags;
342  int level, component, sign;
343  const int *scale;
344  const uint8_t *weight_matrix;
345  const uint8_t *ac_info = ctx->cid_table->ac_info;
346  int16_t *block = row->blocks[n];
347  const int eob_index = ctx->cid_table->eob_index;
348  int ret = 0;
349  OPEN_READER(bs, &row->gb);
350 
351  ctx->bdsp.clear_block(block);
352 
353  if (!ctx->is_444) {
354  if (n & 2) {
355  component = 1 + (n & 1);
356  scale = row->chroma_scale;
357  weight_matrix = ctx->cid_table->chroma_weight;
358  } else {
359  component = 0;
360  scale = row->luma_scale;
361  weight_matrix = ctx->cid_table->luma_weight;
362  }
363  } else {
364  component = (n >> 1) % 3;
365  if (component) {
366  scale = row->chroma_scale;
367  weight_matrix = ctx->cid_table->chroma_weight;
368  } else {
369  scale = row->luma_scale;
370  weight_matrix = ctx->cid_table->luma_weight;
371  }
372  }
373 
374  UPDATE_CACHE(bs, &row->gb);
375  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
376  if (len) {
377  level = GET_CACHE(bs, &row->gb);
378  LAST_SKIP_BITS(bs, &row->gb, len);
379  sign = ~level >> 31;
380  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
381  row->last_dc[component] += level * (1 << dc_shift);
382  }
383  block[0] = row->last_dc[component];
384 
385  i = 0;
386 
387  UPDATE_CACHE(bs, &row->gb);
388  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
389  DNXHD_VLC_BITS, 2);
390 
391  while (index1 != eob_index) {
392  level = ac_info[2*index1+0];
393  flags = ac_info[2*index1+1];
394 
395  sign = SHOW_SBITS(bs, &row->gb, 1);
396  SKIP_BITS(bs, &row->gb, 1);
397 
398  if (flags & 1) {
399  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
400  SKIP_BITS(bs, &row->gb, index_bits);
401  }
402 
403  if (flags & 2) {
404  UPDATE_CACHE(bs, &row->gb);
405  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
406  DNXHD_VLC_BITS, 2);
407  i += ctx->cid_table->run[index2];
408  }
409 
410  if (++i > 63) {
411  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
412  ret = -1;
413  break;
414  }
415 
416  j = ctx->scantable.permutated[i];
417  level *= scale[i];
418  level += scale[i] >> 1;
419  if (level_bias < 32 || weight_matrix[i] != level_bias)
420  level += level_bias; // 1<<(level_shift-1)
421  level >>= level_shift;
422 
423  block[j] = (level ^ sign) - sign;
424 
425  UPDATE_CACHE(bs, &row->gb);
426  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
427  DNXHD_VLC_BITS, 2);
428  }
429 
430  CLOSE_READER(bs, &row->gb);
431  return ret;
432 }
433 
435  RowContext *row, int n)
436 {
437  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
438 }
439 
441  RowContext *row, int n)
442 {
443  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
444 }
445 
447  RowContext *row, int n)
448 {
449  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
450 }
451 
453  RowContext *row, int n)
454 {
455  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
456 }
457 
459  RowContext *row, int n)
460 {
461  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
462 }
463 
465  AVFrame *frame, int x, int y)
466 {
467  int shift1 = ctx->bit_depth >= 10;
468  int dct_linesize_luma = frame->linesize[0];
469  int dct_linesize_chroma = frame->linesize[1];
470  uint8_t *dest_y, *dest_u, *dest_v;
471  int dct_y_offset, dct_x_offset;
472  int qscale, i, act;
473  int interlaced_mb = 0;
474 
475  if (ctx->mbaff) {
476  interlaced_mb = get_bits1(&row->gb);
477  qscale = get_bits(&row->gb, 10);
478  } else {
479  qscale = get_bits(&row->gb, 11);
480  }
481  act = get_bits1(&row->gb);
482  if (act) {
483  if (!ctx->act) {
484  static int act_warned;
485  if (!act_warned) {
486  act_warned = 1;
487  av_log(ctx->avctx, AV_LOG_ERROR,
488  "ACT flag set, in violation of frame header.\n");
489  }
490  } else if (row->format == -1) {
491  row->format = act;
492  } else if (row->format != act) {
493  row->format = 2; // Variable
494  }
495  }
496 
497  if (qscale != row->last_qscale) {
498  for (i = 0; i < 64; i++) {
499  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
500  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
501  }
502  row->last_qscale = qscale;
503  }
504 
505  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
506  if (ctx->decode_dct_block(ctx, row, i) < 0)
507  return AVERROR_INVALIDDATA;
508  }
509 
510  if (frame->interlaced_frame) {
511  dct_linesize_luma <<= 1;
512  dct_linesize_chroma <<= 1;
513  }
514 
515  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
516  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
517  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
518 
519  if (frame->interlaced_frame && ctx->cur_field) {
520  dest_y += frame->linesize[0];
521  dest_u += frame->linesize[1];
522  dest_v += frame->linesize[2];
523  }
524  if (interlaced_mb) {
525  dct_linesize_luma <<= 1;
526  dct_linesize_chroma <<= 1;
527  }
528 
529  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
530  dct_x_offset = 8 << shift1;
531  if (!ctx->is_444) {
532  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
533  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
534  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
535  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
536 
537  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
538  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
539  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
540  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
541  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
542  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
543  }
544  } else {
545  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
546  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
547  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
548  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
549 
550  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
551  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
552  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
553  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
554  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
555  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
556  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
557  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
558  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
559  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
560  }
561  }
562 
563  return 0;
564 }
565 
567  int rownb, int threadnb)
568 {
569  const DNXHDContext *ctx = avctx->priv_data;
570  uint32_t offset = ctx->mb_scan_index[rownb];
571  RowContext *row = ctx->rows + threadnb;
572  int x;
573 
574  row->last_dc[0] =
575  row->last_dc[1] =
576  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
577  init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
578  for (x = 0; x < ctx->mb_width; x++) {
579  //START_TIMER;
580  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
581  if (ret < 0) {
582  row->errors++;
583  return ret;
584  }
585  //STOP_TIMER("decode macroblock");
586  }
587 
588  return 0;
589 }
590 
592  int *got_frame, AVPacket *avpkt)
593 {
594  const uint8_t *buf = avpkt->data;
595  int buf_size = avpkt->size;
596  DNXHDContext *ctx = avctx->priv_data;
597  ThreadFrame frame = { .f = data };
598  AVFrame *picture = data;
599  int first_field = 1;
600  int ret, i;
601 
602  ff_dlog(avctx, "frame size %d\n", buf_size);
603 
604  for (i = 0; i < avctx->thread_count; i++)
605  ctx->rows[i].format = -1;
606 
607 decode_coding_unit:
608  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
609  return ret;
610 
611  if ((avctx->width || avctx->height) &&
612  (ctx->width != avctx->width || ctx->height != avctx->height)) {
613  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %dx%d\n",
614  avctx->width, avctx->height, ctx->width, ctx->height);
615  first_field = 1;
616  }
617  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
618  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
620  first_field = 1;
621  }
622 
623  avctx->pix_fmt = ctx->pix_fmt;
624  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
625  if (ret < 0)
626  return ret;
627 
628  if (first_field) {
629  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
630  return ret;
631  picture->pict_type = AV_PICTURE_TYPE_I;
632  picture->key_frame = 1;
633  }
634 
635  ctx->buf_size = buf_size - ctx->data_offset;
636  ctx->buf = buf + ctx->data_offset;
637  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
638 
639  if (first_field && picture->interlaced_frame) {
640  buf += ctx->cid_table->coding_unit_size;
641  buf_size -= ctx->cid_table->coding_unit_size;
642  first_field = 0;
643  goto decode_coding_unit;
644  }
645 
646  ret = 0;
647  for (i = 0; i < avctx->thread_count; i++) {
648  ret += ctx->rows[i].errors;
649  ctx->rows[i].errors = 0;
650  }
651 
652  if (ctx->act) {
653  static int act_warned;
654  int format = ctx->rows[0].format;
655  for (i = 1; i < avctx->thread_count; i++) {
656  if (ctx->rows[i].format != format &&
657  ctx->rows[i].format != -1 /* not run */) {
658  format = 2;
659  break;
660  }
661  }
662  switch (format) {
663  case -1:
664  case 2:
665  if (!act_warned) {
666  act_warned = 1;
667  av_log(ctx->avctx, AV_LOG_ERROR,
668  "Unsupported: variable ACT flag.\n");
669  }
670  break;
671  case 0:
672  ctx->pix_fmt = ctx->bit_depth==10
674  break;
675  case 1:
676  ctx->pix_fmt = ctx->bit_depth==10
678  break;
679  }
680  }
681  avctx->pix_fmt = ctx->pix_fmt;
682  if (ret) {
683  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
684  return AVERROR_INVALIDDATA;
685  }
686 
687  *got_frame = 1;
688  return avpkt->size;
689 }
690 
692 {
693  DNXHDContext *ctx = avctx->priv_data;
694 
695  ff_free_vlc(&ctx->ac_vlc);
696  ff_free_vlc(&ctx->dc_vlc);
697  ff_free_vlc(&ctx->run_vlc);
698 
699  av_freep(&ctx->rows);
700 
701  return 0;
702 }
703 
705  .name = "dnxhd",
706  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
707  .type = AVMEDIA_TYPE_VIDEO,
708  .id = AV_CODEC_ID_DNXHD,
709  .priv_data_size = sizeof(DNXHDContext),
711  .close = dnxhd_decode_close,
713  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
717 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:3176
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:438
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2879
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:434
#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:184
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:35
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1859
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:247
#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:149
Scantable.
Definition: idctdsp.h:29
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:1589
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:359
const CIDEntry ff_dnxhd_cid_table[]
Definition: dnxhddata.c:933
const uint16_t * run_codes
Definition: dnxhddata.h:55
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
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:2068
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:1885
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:3057
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:3161
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3559
int luma_scale[64]
Definition: dnxhddec.c:41
const uint8_t * buf
Definition: dnxhddec.c:55
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
Definition: dnxhddec.c:691
#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:452
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
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:333
uint8_t * data
Definition: avcodec.h:1588
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:76
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:318
unsigned int coding_unit_size
Definition: dnxhddata.h:46
#define DNXHD_DC_VLC_BITS
Definition: dnxhddec.c:77
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:348
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:858
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:228
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:1080
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:566
#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:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1752
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:3566
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:346
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:3177
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:446
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1019
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:215
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
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
int width
picture width / height.
Definition: avcodec.h:1844
#define NEG_USR32(a, s)
Definition: mathops.h:175
const uint8_t * run
Definition: dnxhddata.h:56
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:547
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:458
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:94
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:3179
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:464
#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:3087
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1023
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:70
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
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:58
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
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:440
main external API structure.
Definition: avcodec.h:1657
#define OPEN_READER(name, gb)
Definition: get_bits.h:120
void * buf
Definition: avisynth_c.h:553
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:299
int coded_height
Definition: avcodec.h:1859
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:2386
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:406
#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:3178
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:360
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:344
static int flags
Definition: cpu.c:47
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:350
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:198
uint8_t level
Definition: svq3.c:193
#define DNXHD_VARIABLE
Indicate that a CIDEntry value must be read in the bitstream.
Definition: dnxhddata.h:40
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:752
#define SHOW_SBITS(name, gb, num)
Definition: get_bits.h:194
#define FF_PROFILE_DNXHR_HQX
Definition: avcodec.h:3180
GetBitContext gb
Definition: dnxhddec.c:43
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
int data_offset
Definition: dnxhddec.c:62
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:72
static unsigned bit_depth(uint64_t mask)
Definition: af_astats.c:142
int den
denominator
Definition: rational.h:45
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:3181
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1699
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:323
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:591
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:3147
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:253
BlockDSPContext bdsp
Definition: dnxhddec.c:54
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:704
const CIDEntry * cid_table
Definition: dnxhddec.c:67
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
#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:2179
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1565
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:360
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:956
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2874
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:458
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:90
static int16_t block[64]
Definition: dct-test.c:112