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dnxhddec.c
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1 /*
2  * VC3/DNxHD decoder.
3  * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4  * Copyright (c) 2011 MirriAd Ltd
5  * Copyright (c) 2015 Christophe Gisquet
6  *
7  * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
8  * Slice multithreading and MB interlaced support added by Christophe Gisquet
9  *
10  * This file is part of FFmpeg.
11  *
12  * FFmpeg is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU Lesser General Public
14  * License as published by the Free Software Foundation; either
15  * version 2.1 of the License, or (at your option) any later version.
16  *
17  * FFmpeg is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * Lesser General Public License for more details.
21  *
22  * You should have received a copy of the GNU Lesser General Public
23  * License along with FFmpeg; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  */
26 
27 #include "libavutil/imgutils.h"
28 #include "libavutil/timer.h"
29 #include "avcodec.h"
30 #include "blockdsp.h"
31 #define UNCHECKED_BITSTREAM_READER 1
32 #include "get_bits.h"
33 #include "dnxhddata.h"
34 #include "idctdsp.h"
35 #include "internal.h"
36 #include "profiles.h"
37 #include "thread.h"
38 
39 typedef struct RowContext {
40  DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
41  int luma_scale[64];
42  int chroma_scale[64];
44  int last_dc[3];
46  int errors;
47  /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
48  int format;
49 } RowContext;
50 
51 typedef struct DNXHDContext {
55  const uint8_t* buf;
56  int buf_size;
57  int64_t cid; ///< compression id
58  unsigned int width, height;
60  unsigned int mb_width, mb_height;
61  uint32_t mb_scan_index[512];
62  int data_offset; // End of mb_scan_index, where macroblocks start
63  int cur_field; ///< current interlaced field
68  int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
69  int is_444;
70  int 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 %"PRIu32"\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 %"PRIu32".\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  ctx->avctx = avctx;
149  // make sure VLC tables will be loaded when cid is parsed
150  ctx->cid = -1;
151 
152  ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
153  if (!ctx->rows)
154  return AVERROR(ENOMEM);
155 
156  return 0;
157 }
158 
159 static int dnxhd_get_profile(int cid)
160 {
161  switch(cid) {
162  case 1270:
163  return FF_PROFILE_DNXHR_444;
164  case 1271:
165  return FF_PROFILE_DNXHR_HQX;
166  case 1272:
167  return FF_PROFILE_DNXHR_HQ;
168  case 1273:
169  return FF_PROFILE_DNXHR_SQ;
170  case 1274:
171  return FF_PROFILE_DNXHR_LB;
172  }
173  return FF_PROFILE_DNXHD;
174 }
175 
177  const uint8_t *buf, int buf_size,
178  int first_field)
179 {
180  int i, cid, ret;
181  int old_bit_depth = ctx->bit_depth, bitdepth;
182  uint64_t header_prefix;
183  if (buf_size < 0x280) {
184  av_log(ctx->avctx, AV_LOG_ERROR,
185  "buffer too small (%d < 640).\n", buf_size);
186  return AVERROR_INVALIDDATA;
187  }
188 
189  header_prefix = ff_dnxhd_parse_header_prefix(buf);
190  if (header_prefix == 0) {
191  av_log(ctx->avctx, AV_LOG_ERROR,
192  "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
193  buf[0], buf[1], buf[2], buf[3], buf[4]);
194  return AVERROR_INVALIDDATA;
195  }
196  if (buf[5] & 2) { /* interlaced */
197  ctx->cur_field = buf[5] & 1;
198  frame->interlaced_frame = 1;
199  frame->top_field_first = first_field ^ ctx->cur_field;
200  av_log(ctx->avctx, AV_LOG_DEBUG,
201  "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
202  } else {
203  ctx->cur_field = 0;
204  }
205  ctx->mbaff = (buf[0x6] >> 5) & 1;
206 
207  ctx->height = AV_RB16(buf + 0x18);
208  ctx->width = AV_RB16(buf + 0x1a);
209 
210  switch(buf[0x21] >> 5) {
211  case 1: bitdepth = 8; break;
212  case 2: bitdepth = 10; break;
213  case 3: bitdepth = 12; break;
214  default:
215  av_log(ctx->avctx, AV_LOG_ERROR,
216  "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
217  return AVERROR_INVALIDDATA;
218  }
219 
220  cid = AV_RB32(buf + 0x28);
221 
222  ctx->avctx->profile = dnxhd_get_profile(cid);
223 
224  if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
225  return ret;
226  if (ctx->mbaff && ctx->cid_table->cid != 1260)
228  "Adaptive MB interlace flag in an unsupported profile.\n");
229 
230  ctx->act = buf[0x2C] & 7;
231  if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
233  "Adaptive color transform in an unsupported profile.\n");
234 
235  ctx->is_444 = (buf[0x2C] >> 6) & 1;
236  if (ctx->is_444) {
237  if (bitdepth == 8) {
238  avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
239  return AVERROR_INVALIDDATA;
240  } else if (bitdepth == 10) {
242  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
244  } else {
246  ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
248  }
249  } else if (bitdepth == 12) {
252  } else if (bitdepth == 10) {
253  if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
255  else
258  } else {
261  }
262 
263  ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
264  if (ctx->bit_depth != old_bit_depth) {
265  ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
266  ff_idctdsp_init(&ctx->idsp, ctx->avctx);
269  }
270 
271  // make sure profile size constraints are respected
272  // DNx100 allows 1920->1440 and 1280->960 subsampling
273  if (ctx->width != ctx->cid_table->width &&
274  ctx->cid_table->width != DNXHD_VARIABLE) {
277  ctx->width, ctx->cid_table->width, 255);
278  ctx->width = ctx->cid_table->width;
279  }
280 
281  if (buf_size < ctx->cid_table->coding_unit_size) {
282  av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
283  buf_size, ctx->cid_table->coding_unit_size);
284  return AVERROR_INVALIDDATA;
285  }
286 
287  ctx->mb_width = (ctx->width + 15)>> 4;
288  ctx->mb_height = AV_RB16(buf + 0x16c);
289 
290  if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
291  ctx->height <<= 1;
292 
293  av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
294  ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
295  ctx->bit_depth, ctx->mbaff, ctx->act);
296 
297  // Newer format supports variable mb_scan_index sizes
298  if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
299  ctx->data_offset = 0x170 + (ctx->mb_height << 2);
300  } else {
301  if (ctx->mb_height > 68) {
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  if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
309  av_log(ctx->avctx, AV_LOG_ERROR,
310  "mb height too big: %d\n", ctx->mb_height);
311  return AVERROR_INVALIDDATA;
312  }
313 
314  if (buf_size < ctx->data_offset) {
315  av_log(ctx->avctx, AV_LOG_ERROR,
316  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
317  return AVERROR_INVALIDDATA;
318  }
319 
320  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
321  av_log(ctx->avctx, AV_LOG_ERROR,
322  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
323  return AVERROR_INVALIDDATA;
324  }
325 
326  for (i = 0; i < ctx->mb_height; i++) {
327  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
328  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
329  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
330  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
331  av_log(ctx->avctx, AV_LOG_ERROR,
332  "invalid mb scan index (%"PRIu32" vs %u).\n",
333  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
334  return AVERROR_INVALIDDATA;
335  }
336  }
337 
338  return 0;
339 }
340 
342  RowContext *row,
343  int n,
344  int index_bits,
345  int level_bias,
346  int level_shift,
347  int dc_shift)
348 {
349  int i, j, index1, index2, len, flags;
350  int level, component, sign;
351  const int *scale;
352  const uint8_t *weight_matrix;
353  const uint8_t *ac_info = ctx->cid_table->ac_info;
354  int16_t *block = row->blocks[n];
355  const int eob_index = ctx->cid_table->eob_index;
356  int ret = 0;
357  OPEN_READER(bs, &row->gb);
358 
359  ctx->bdsp.clear_block(block);
360 
361  if (!ctx->is_444) {
362  if (n & 2) {
363  component = 1 + (n & 1);
364  scale = row->chroma_scale;
365  weight_matrix = ctx->cid_table->chroma_weight;
366  } else {
367  component = 0;
368  scale = row->luma_scale;
369  weight_matrix = ctx->cid_table->luma_weight;
370  }
371  } else {
372  component = (n >> 1) % 3;
373  if (component) {
374  scale = row->chroma_scale;
375  weight_matrix = ctx->cid_table->chroma_weight;
376  } else {
377  scale = row->luma_scale;
378  weight_matrix = ctx->cid_table->luma_weight;
379  }
380  }
381 
382  UPDATE_CACHE(bs, &row->gb);
383  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
384  if (len) {
385  level = GET_CACHE(bs, &row->gb);
386  LAST_SKIP_BITS(bs, &row->gb, len);
387  sign = ~level >> 31;
388  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
389  row->last_dc[component] += level * (1 << dc_shift);
390  }
391  block[0] = row->last_dc[component];
392 
393  i = 0;
394 
395  UPDATE_CACHE(bs, &row->gb);
396  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
397  DNXHD_VLC_BITS, 2);
398 
399  while (index1 != eob_index) {
400  level = ac_info[2*index1+0];
401  flags = ac_info[2*index1+1];
402 
403  sign = SHOW_SBITS(bs, &row->gb, 1);
404  SKIP_BITS(bs, &row->gb, 1);
405 
406  if (flags & 1) {
407  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
408  SKIP_BITS(bs, &row->gb, index_bits);
409  }
410 
411  if (flags & 2) {
412  UPDATE_CACHE(bs, &row->gb);
413  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
414  DNXHD_VLC_BITS, 2);
415  i += ctx->cid_table->run[index2];
416  }
417 
418  if (++i > 63) {
419  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
420  ret = -1;
421  break;
422  }
423 
424  j = ctx->scantable.permutated[i];
425  level *= scale[i];
426  level += scale[i] >> 1;
427  if (level_bias < 32 || weight_matrix[i] != level_bias)
428  level += level_bias; // 1<<(level_shift-1)
429  level >>= level_shift;
430 
431  block[j] = (level ^ sign) - sign;
432 
433  UPDATE_CACHE(bs, &row->gb);
434  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
435  DNXHD_VLC_BITS, 2);
436  }
437 
438  CLOSE_READER(bs, &row->gb);
439  return ret;
440 }
441 
443  RowContext *row, int n)
444 {
445  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
446 }
447 
449  RowContext *row, int n)
450 {
451  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
452 }
453 
455  RowContext *row, int n)
456 {
457  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
458 }
459 
461  RowContext *row, int n)
462 {
463  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
464 }
465 
467  RowContext *row, int n)
468 {
469  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
470 }
471 
473  AVFrame *frame, int x, int y)
474 {
475  int shift1 = ctx->bit_depth >= 10;
476  int dct_linesize_luma = frame->linesize[0];
477  int dct_linesize_chroma = frame->linesize[1];
478  uint8_t *dest_y, *dest_u, *dest_v;
479  int dct_y_offset, dct_x_offset;
480  int qscale, i, act;
481  int interlaced_mb = 0;
482 
483  if (ctx->mbaff) {
484  interlaced_mb = get_bits1(&row->gb);
485  qscale = get_bits(&row->gb, 10);
486  } else {
487  qscale = get_bits(&row->gb, 11);
488  }
489  act = get_bits1(&row->gb);
490  if (act) {
491  if (!ctx->act) {
492  static int act_warned;
493  if (!act_warned) {
494  act_warned = 1;
495  av_log(ctx->avctx, AV_LOG_ERROR,
496  "ACT flag set, in violation of frame header.\n");
497  }
498  } else if (row->format == -1) {
499  row->format = act;
500  } else if (row->format != act) {
501  row->format = 2; // Variable
502  }
503  }
504 
505  if (qscale != row->last_qscale) {
506  for (i = 0; i < 64; i++) {
507  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
508  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
509  }
510  row->last_qscale = qscale;
511  }
512 
513  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
514  if (ctx->decode_dct_block(ctx, row, i) < 0)
515  return AVERROR_INVALIDDATA;
516  }
517 
518  if (frame->interlaced_frame) {
519  dct_linesize_luma <<= 1;
520  dct_linesize_chroma <<= 1;
521  }
522 
523  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
524  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
525  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
526 
527  if (frame->interlaced_frame && ctx->cur_field) {
528  dest_y += frame->linesize[0];
529  dest_u += frame->linesize[1];
530  dest_v += frame->linesize[2];
531  }
532  if (interlaced_mb) {
533  dct_linesize_luma <<= 1;
534  dct_linesize_chroma <<= 1;
535  }
536 
537  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
538  dct_x_offset = 8 << shift1;
539  if (!ctx->is_444) {
540  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
541  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
542  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
543  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
544 
545  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
546  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
547  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
548  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
549  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
550  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
551  }
552  } else {
553  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
554  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
555  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
556  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
557 
558  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
559  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
560  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
561  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
562  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
563  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
564  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
565  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
566  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
567  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
568  }
569  }
570 
571  return 0;
572 }
573 
575  int rownb, int threadnb)
576 {
577  const DNXHDContext *ctx = avctx->priv_data;
578  uint32_t offset = ctx->mb_scan_index[rownb];
579  RowContext *row = ctx->rows + threadnb;
580  int x;
581 
582  row->last_dc[0] =
583  row->last_dc[1] =
584  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
585  init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
586  for (x = 0; x < ctx->mb_width; x++) {
587  //START_TIMER;
588  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
589  if (ret < 0) {
590  row->errors++;
591  return ret;
592  }
593  //STOP_TIMER("decode macroblock");
594  }
595 
596  return 0;
597 }
598 
600  int *got_frame, AVPacket *avpkt)
601 {
602  const uint8_t *buf = avpkt->data;
603  int buf_size = avpkt->size;
604  DNXHDContext *ctx = avctx->priv_data;
605  ThreadFrame frame = { .f = data };
606  AVFrame *picture = data;
607  int first_field = 1;
608  int ret, i;
609 
610  ff_dlog(avctx, "frame size %d\n", buf_size);
611 
612  for (i = 0; i < avctx->thread_count; i++)
613  ctx->rows[i].format = -1;
614 
615 decode_coding_unit:
616  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
617  return ret;
618 
619  if ((avctx->width || avctx->height) &&
620  (ctx->width != avctx->width || ctx->height != avctx->height)) {
621  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
622  avctx->width, avctx->height, ctx->width, ctx->height);
623  first_field = 1;
624  }
625  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
626  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
628  first_field = 1;
629  }
630 
631  avctx->pix_fmt = ctx->pix_fmt;
632  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
633  if (ret < 0)
634  return ret;
635 
636  if (first_field) {
637  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
638  return ret;
639  picture->pict_type = AV_PICTURE_TYPE_I;
640  picture->key_frame = 1;
641  }
642 
643  ctx->buf_size = buf_size - ctx->data_offset;
644  ctx->buf = buf + ctx->data_offset;
645  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
646 
647  if (first_field && picture->interlaced_frame) {
648  buf += ctx->cid_table->coding_unit_size;
649  buf_size -= ctx->cid_table->coding_unit_size;
650  first_field = 0;
651  goto decode_coding_unit;
652  }
653 
654  ret = 0;
655  for (i = 0; i < avctx->thread_count; i++) {
656  ret += ctx->rows[i].errors;
657  ctx->rows[i].errors = 0;
658  }
659 
660  if (ctx->act) {
661  static int act_warned;
662  int format = ctx->rows[0].format;
663  for (i = 1; i < avctx->thread_count; i++) {
664  if (ctx->rows[i].format != format &&
665  ctx->rows[i].format != -1 /* not run */) {
666  format = 2;
667  break;
668  }
669  }
670  switch (format) {
671  case -1:
672  case 2:
673  if (!act_warned) {
674  act_warned = 1;
675  av_log(ctx->avctx, AV_LOG_ERROR,
676  "Unsupported: variable ACT flag.\n");
677  }
678  break;
679  case 0:
680  ctx->pix_fmt = ctx->bit_depth==10
682  break;
683  case 1:
684  ctx->pix_fmt = ctx->bit_depth==10
686  break;
687  }
688  }
689  avctx->pix_fmt = ctx->pix_fmt;
690  if (ret) {
691  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
692  return AVERROR_INVALIDDATA;
693  }
694 
695  *got_frame = 1;
696  return avpkt->size;
697 }
698 
700 {
701  DNXHDContext *ctx = avctx->priv_data;
702 
703  ff_free_vlc(&ctx->ac_vlc);
704  ff_free_vlc(&ctx->dc_vlc);
705  ff_free_vlc(&ctx->run_vlc);
706 
707  av_freep(&ctx->rows);
708 
709  return 0;
710 }
711 
713  .name = "dnxhd",
714  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
715  .type = AVMEDIA_TYPE_VIDEO,
716  .id = AV_CODEC_ID_DNXHD,
717  .priv_data_size = sizeof(DNXHDContext),
719  .close = dnxhd_decode_close,
721  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
725 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:2821
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:468
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:442
#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:1668
int64_t cid
compression id
Definition: dnxhddec.c:57
static int dnxhd_get_profile(int cid)
Definition: dnxhddec.c:159
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:194
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:31
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1400
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:377
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:1859
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:1690
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:2704
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:2806
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3289
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:699
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:460
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:111
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:341
uint8_t * data
Definition: avcodec.h:1399
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:366
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:857
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:574
#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:190
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1561
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:3296
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:364
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:2822
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:454
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1011
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:229
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int width
picture width / height.
Definition: avcodec.h:1653
#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:2824
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:472
#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:2732
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1015
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:448
main external API structure.
Definition: avcodec.h:1481
#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:1668
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:2104
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:2823
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:378
#define SIZE_SPECIFIER
Definition: internal.h:266
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:362
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:368
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: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:2825
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:2826
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1508
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:599
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:2792
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:712
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:176
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:2275
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1376
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:955
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:466
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