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[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 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  if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
97  avctx->colorspace = AVCOL_SPC_BT709;
98  }
99 
100  avctx->coded_width = FFALIGN(avctx->width, 16);
101  avctx->coded_height = FFALIGN(avctx->height, 16);
102 
103  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
104  if (!ctx->rows)
105  return AVERROR(ENOMEM);
106 
107  return 0;
108 }
109 
110 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
111 {
112  if (cid != ctx->cid) {
113  int index;
114 
115  if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
116  av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
117  return AVERROR(ENOSYS);
118  }
119  if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
121  av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
122  return AVERROR_INVALIDDATA;
123  }
125  av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
126 
127  ff_free_vlc(&ctx->ac_vlc);
128  ff_free_vlc(&ctx->dc_vlc);
129  ff_free_vlc(&ctx->run_vlc);
130 
131  init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
132  ctx->cid_table->ac_bits, 1, 1,
133  ctx->cid_table->ac_codes, 2, 2, 0);
134  init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
135  ctx->cid_table->dc_bits, 1, 1,
136  ctx->cid_table->dc_codes, 1, 1, 0);
137  init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
138  ctx->cid_table->run_bits, 1, 1,
139  ctx->cid_table->run_codes, 2, 2, 0);
140 
141  ctx->cid = cid;
142  }
143  return 0;
144 }
145 
147 {
148  DNXHDContext *ctx = avctx->priv_data;
149 
150  ctx->avctx = avctx;
151  // make sure VLC tables will be loaded when cid is parsed
152  ctx->cid = -1;
153 
154  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
155  if (!ctx->rows)
156  return AVERROR(ENOMEM);
157 
158  return 0;
159 }
160 
161 static int dnxhd_get_profile(int cid)
162 {
163  switch(cid) {
164  case 1270:
165  return FF_PROFILE_DNXHR_444;
166  case 1271:
167  return FF_PROFILE_DNXHR_HQX;
168  case 1272:
169  return FF_PROFILE_DNXHR_HQ;
170  case 1273:
171  return FF_PROFILE_DNXHR_SQ;
172  case 1274:
173  return FF_PROFILE_DNXHR_LB;
174  }
175  return FF_PROFILE_DNXHD;
176 }
177 
179  const uint8_t *buf, int buf_size,
180  int first_field)
181 {
182  int i, cid, ret;
183  int old_bit_depth = ctx->bit_depth, bitdepth;
184  uint64_t header_prefix;
185  if (buf_size < 0x280) {
186  av_log(ctx->avctx, AV_LOG_ERROR,
187  "buffer too small (%d < 640).\n", buf_size);
188  return AVERROR_INVALIDDATA;
189  }
190 
191  header_prefix = ff_dnxhd_parse_header_prefix(buf);
192  if (header_prefix == 0) {
193  av_log(ctx->avctx, AV_LOG_ERROR,
194  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
195  buf[0], buf[1], buf[2], buf[3], buf[4]);
196  return AVERROR_INVALIDDATA;
197  }
198  if (buf[5] & 2) { /* interlaced */
199  ctx->cur_field = buf[5] & 1;
200  frame->interlaced_frame = 1;
201  frame->top_field_first = first_field ^ ctx->cur_field;
202  av_log(ctx->avctx, AV_LOG_DEBUG,
203  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
204  } else {
205  ctx->cur_field = 0;
206  }
207  ctx->mbaff = (buf[0x6] >> 5) & 1;
208 
209  ctx->height = AV_RB16(buf + 0x18);
210  ctx->width = AV_RB16(buf + 0x1a);
211 
212  switch(buf[0x21] >> 5) {
213  case 1: bitdepth = 8; break;
214  case 2: bitdepth = 10; break;
215  case 3: bitdepth = 12; break;
216  default:
217  av_log(ctx->avctx, AV_LOG_ERROR,
218  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
219  return AVERROR_INVALIDDATA;
220  }
221 
222  cid = AV_RB32(buf + 0x28);
223 
224  ctx->avctx->profile = dnxhd_get_profile(cid);
225 
226  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
227  return ret;
228  if (ctx->mbaff && ctx->cid_table->cid != 1260)
230  "Adaptive MB interlace flag in an unsupported profile.\n");
231 
232  ctx->act = buf[0x2C] & 7;
233  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
235  "Adaptive color transform in an unsupported profile.\n");
236 
237  ctx->is_444 = (buf[0x2C] >> 6) & 1;
238  if (ctx->is_444) {
239  if (bitdepth == 8) {
240  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
241  return AVERROR_INVALIDDATA;
242  } else if (bitdepth == 10) {
244  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
246  } else {
248  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
250  }
251  } else if (bitdepth == 12) {
254  } else if (bitdepth == 10) {
255  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
257  else
260  } else {
263  }
264 
265  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
266  if (ctx->bit_depth != old_bit_depth) {
267  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
268  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
271  }
272 
273  // make sure profile size constraints are respected
274  // DNx100 allows 1920->1440 and 1280->960 subsampling
275  if (ctx->width != ctx->cid_table->width &&
276  ctx->cid_table->width != DNXHD_VARIABLE) {
279  ctx->width, ctx->cid_table->width, 255);
280  ctx->width = ctx->cid_table->width;
281  }
282 
283  if (buf_size < ctx->cid_table->coding_unit_size) {
284  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
285  buf_size, ctx->cid_table->coding_unit_size);
286  return AVERROR_INVALIDDATA;
287  }
288 
289  ctx->mb_width = (ctx->width + 15)>> 4;
290  ctx->mb_height = AV_RB16(buf + 0x16c);
291 
292  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
293  ctx->height <<= 1;
294 
295  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
296  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
297  ctx->bit_depth, ctx->mbaff, ctx->act);
298 
299  // Newer format supports variable mb_scan_index sizes
300  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
301  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
302  } else {
303  if (ctx->mb_height > 68) {
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  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
311  av_log(ctx->avctx, AV_LOG_ERROR,
312  "mb height too big: %d\n", ctx->mb_height);
313  return AVERROR_INVALIDDATA;
314  }
315 
316  if (buf_size < ctx->data_offset) {
317  av_log(ctx->avctx, AV_LOG_ERROR,
318  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
319  return AVERROR_INVALIDDATA;
320  }
321 
322  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
323  av_log(ctx->avctx, AV_LOG_ERROR,
324  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
325  return AVERROR_INVALIDDATA;
326  }
327 
328  for (i = 0; i < ctx->mb_height; i++) {
329  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
330  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
331  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
332  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
333  av_log(ctx->avctx, AV_LOG_ERROR,
334  "invalid mb scan index (%"PRIu32" vs %u).\n",
335  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
336  return AVERROR_INVALIDDATA;
337  }
338  }
339 
340  return 0;
341 }
342 
344  RowContext *row,
345  int n,
346  int index_bits,
347  int level_bias,
348  int level_shift,
349  int dc_shift)
350 {
351  int i, j, index1, index2, len, flags;
352  int level, component, sign;
353  const int *scale;
354  const uint8_t *weight_matrix;
355  const uint8_t *ac_info = ctx->cid_table->ac_info;
356  int16_t *block = row->blocks[n];
357  const int eob_index = ctx->cid_table->eob_index;
358  int ret = 0;
359  OPEN_READER(bs, &row->gb);
360 
361  ctx->bdsp.clear_block(block);
362 
363  if (!ctx->is_444) {
364  if (n & 2) {
365  component = 1 + (n & 1);
366  scale = row->chroma_scale;
367  weight_matrix = ctx->cid_table->chroma_weight;
368  } else {
369  component = 0;
370  scale = row->luma_scale;
371  weight_matrix = ctx->cid_table->luma_weight;
372  }
373  } else {
374  component = (n >> 1) % 3;
375  if (component) {
376  scale = row->chroma_scale;
377  weight_matrix = ctx->cid_table->chroma_weight;
378  } else {
379  scale = row->luma_scale;
380  weight_matrix = ctx->cid_table->luma_weight;
381  }
382  }
383 
384  UPDATE_CACHE(bs, &row->gb);
385  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
386  if (len) {
387  level = GET_CACHE(bs, &row->gb);
388  LAST_SKIP_BITS(bs, &row->gb, len);
389  sign = ~level >> 31;
390  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
391  row->last_dc[component] += level * (1 << dc_shift);
392  }
393  block[0] = row->last_dc[component];
394 
395  i = 0;
396 
397  UPDATE_CACHE(bs, &row->gb);
398  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
399  DNXHD_VLC_BITS, 2);
400 
401  while (index1 != eob_index) {
402  level = ac_info[2*index1+0];
403  flags = ac_info[2*index1+1];
404 
405  sign = SHOW_SBITS(bs, &row->gb, 1);
406  SKIP_BITS(bs, &row->gb, 1);
407 
408  if (flags & 1) {
409  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
410  SKIP_BITS(bs, &row->gb, index_bits);
411  }
412 
413  if (flags & 2) {
414  UPDATE_CACHE(bs, &row->gb);
415  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
416  DNXHD_VLC_BITS, 2);
417  i += ctx->cid_table->run[index2];
418  }
419 
420  if (++i > 63) {
421  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
422  ret = -1;
423  break;
424  }
425 
426  j = ctx->scantable.permutated[i];
427  level *= scale[i];
428  level += scale[i] >> 1;
429  if (level_bias < 32 || weight_matrix[i] != level_bias)
430  level += level_bias; // 1<<(level_shift-1)
431  level >>= level_shift;
432 
433  block[j] = (level ^ sign) - sign;
434 
435  UPDATE_CACHE(bs, &row->gb);
436  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
437  DNXHD_VLC_BITS, 2);
438  }
439 
440  CLOSE_READER(bs, &row->gb);
441  return ret;
442 }
443 
445  RowContext *row, int n)
446 {
447  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
448 }
449 
451  RowContext *row, int n)
452 {
453  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
454 }
455 
457  RowContext *row, int n)
458 {
459  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
460 }
461 
463  RowContext *row, int n)
464 {
465  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
466 }
467 
469  RowContext *row, int n)
470 {
471  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
472 }
473 
475  AVFrame *frame, int x, int y)
476 {
477  int shift1 = ctx->bit_depth >= 10;
478  int dct_linesize_luma = frame->linesize[0];
479  int dct_linesize_chroma = frame->linesize[1];
480  uint8_t *dest_y, *dest_u, *dest_v;
481  int dct_y_offset, dct_x_offset;
482  int qscale, i, act;
483  int interlaced_mb = 0;
484 
485  if (ctx->mbaff) {
486  interlaced_mb = get_bits1(&row->gb);
487  qscale = get_bits(&row->gb, 10);
488  } else {
489  qscale = get_bits(&row->gb, 11);
490  }
491  act = get_bits1(&row->gb);
492  if (act) {
493  if (!ctx->act) {
494  static int act_warned;
495  if (!act_warned) {
496  act_warned = 1;
497  av_log(ctx->avctx, AV_LOG_ERROR,
498  "ACT flag set, in violation of frame header.\n");
499  }
500  } else if (row->format == -1) {
501  row->format = act;
502  } else if (row->format != act) {
503  row->format = 2; // Variable
504  }
505  }
506 
507  if (qscale != row->last_qscale) {
508  for (i = 0; i < 64; i++) {
509  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
510  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
511  }
512  row->last_qscale = qscale;
513  }
514 
515  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
516  if (ctx->decode_dct_block(ctx, row, i) < 0)
517  return AVERROR_INVALIDDATA;
518  }
519 
520  if (frame->interlaced_frame) {
521  dct_linesize_luma <<= 1;
522  dct_linesize_chroma <<= 1;
523  }
524 
525  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
526  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
527  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
528 
529  if (frame->interlaced_frame && ctx->cur_field) {
530  dest_y += frame->linesize[0];
531  dest_u += frame->linesize[1];
532  dest_v += frame->linesize[2];
533  }
534  if (interlaced_mb) {
535  dct_linesize_luma <<= 1;
536  dct_linesize_chroma <<= 1;
537  }
538 
539  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
540  dct_x_offset = 8 << shift1;
541  if (!ctx->is_444) {
542  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
543  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
544  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
545  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
546 
547  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
548  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
549  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
550  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
551  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
552  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
553  }
554  } else {
555  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
556  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
557  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
558  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
559 
560  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
561  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
562  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
563  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
564  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
565  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
566  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
567  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
568  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
569  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
570  }
571  }
572 
573  return 0;
574 }
575 
577  int rownb, int threadnb)
578 {
579  const DNXHDContext *ctx = avctx->priv_data;
580  uint32_t offset = ctx->mb_scan_index[rownb];
581  RowContext *row = ctx->rows + threadnb;
582  int x;
583 
584  row->last_dc[0] =
585  row->last_dc[1] =
586  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
587  init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
588  for (x = 0; x < ctx->mb_width; x++) {
589  //START_TIMER;
590  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
591  if (ret < 0) {
592  row->errors++;
593  return ret;
594  }
595  //STOP_TIMER("decode macroblock");
596  }
597 
598  return 0;
599 }
600 
602  int *got_frame, AVPacket *avpkt)
603 {
604  const uint8_t *buf = avpkt->data;
605  int buf_size = avpkt->size;
606  DNXHDContext *ctx = avctx->priv_data;
607  ThreadFrame frame = { .f = data };
608  AVFrame *picture = data;
609  int first_field = 1;
610  int ret, i;
611 
612  ff_dlog(avctx, "frame size %d\n", buf_size);
613 
614  for (i = 0; i < avctx->thread_count; i++)
615  ctx->rows[i].format = -1;
616 
617 decode_coding_unit:
618  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
619  return ret;
620 
621  if ((avctx->width || avctx->height) &&
622  (ctx->width != avctx->width || ctx->height != avctx->height)) {
623  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
624  avctx->width, avctx->height, ctx->width, ctx->height);
625  first_field = 1;
626  }
627  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
628  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
630  first_field = 1;
631  }
632 
633  avctx->pix_fmt = ctx->pix_fmt;
634  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
635  if (ret < 0)
636  return ret;
637 
638  if (first_field) {
639  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
640  return ret;
641  picture->pict_type = AV_PICTURE_TYPE_I;
642  picture->key_frame = 1;
643  }
644 
645  ctx->buf_size = buf_size - ctx->data_offset;
646  ctx->buf = buf + ctx->data_offset;
647  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
648 
649  if (first_field && picture->interlaced_frame) {
650  buf += ctx->cid_table->coding_unit_size;
651  buf_size -= ctx->cid_table->coding_unit_size;
652  first_field = 0;
653  goto decode_coding_unit;
654  }
655 
656  ret = 0;
657  for (i = 0; i < avctx->thread_count; i++) {
658  ret += ctx->rows[i].errors;
659  ctx->rows[i].errors = 0;
660  }
661 
662  if (ctx->act) {
663  static int act_warned;
664  int format = ctx->rows[0].format;
665  for (i = 1; i < avctx->thread_count; i++) {
666  if (ctx->rows[i].format != format &&
667  ctx->rows[i].format != -1 /* not run */) {
668  format = 2;
669  break;
670  }
671  }
672  switch (format) {
673  case -1:
674  case 2:
675  if (!act_warned) {
676  act_warned = 1;
677  av_log(ctx->avctx, AV_LOG_ERROR,
678  "Unsupported: variable ACT flag.\n");
679  }
680  break;
681  case 0:
682  ctx->pix_fmt = ctx->bit_depth==10
684  break;
685  case 1:
686  ctx->pix_fmt = ctx->bit_depth==10
688  break;
689  }
690  }
691  avctx->pix_fmt = ctx->pix_fmt;
692  if (ret) {
693  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
694  return AVERROR_INVALIDDATA;
695  }
696 
697  *got_frame = 1;
698  return avpkt->size;
699 }
700 
702 {
703  DNXHDContext *ctx = avctx->priv_data;
704 
705  ff_free_vlc(&ctx->ac_vlc);
706  ff_free_vlc(&ctx->dc_vlc);
707  ff_free_vlc(&ctx->run_vlc);
708 
709  av_freep(&ctx->rows);
710 
711  return 0;
712 }
713 
715  .name = "dnxhd",
716  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
717  .type = AVMEDIA_TYPE_VIDEO,
718  .id = AV_CODEC_ID_DNXHD,
719  .priv_data_size = sizeof(DNXHDContext),
721  .close = dnxhd_decode_close,
723  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
727 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:2828
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:475
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:444
#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:201
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:1675
int64_t cid
compression id
Definition: dnxhddec.c:57
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:161
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:196
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:146
Scantable.
Definition: idctdsp.h:31
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1401
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:384
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:1866
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:1697
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:2711
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:2813
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3351
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:701
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:462
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: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:343
uint8_t * data
Definition: avcodec.h:1400
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:348
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:373
#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: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: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:576
#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:1568
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:3358
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:371
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:2829
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:456
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1012
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: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:225
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int width
picture width / height.
Definition: avcodec.h:1660
#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:152
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:96
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:2831
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:474
#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:2739
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1016
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:232
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:450
main external API structure.
Definition: avcodec.h:1488
#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:1675
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:2111
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:67
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:2830
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:385
#define SIZE_SPECIFIER
Definition: internal.h:262
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:369
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:375
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:110
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
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:194
int
#define FF_PROFILE_DNXHR_HQX
Definition: avcodec.h:2832
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:72
int den
Denominator.
Definition: rational.h:60
#define FF_PROFILE_DNXHR_444
Definition: avcodec.h:2833
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1515
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:353
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:601
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:2799
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:279
BlockDSPContext bdsp
Definition: dnxhddec.c:54
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:714
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:178
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:2279
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1377
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:956
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:468
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:90
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191