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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  (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
303  av_log(ctx->avctx, AV_LOG_ERROR,
304  "mb height too big: %d\n", ctx->mb_height);
305  return AVERROR_INVALIDDATA;
306  }
307  ctx->data_offset = 0x280;
308  }
309 
310  if (buf_size < ctx->data_offset) {
311  av_log(ctx->avctx, AV_LOG_ERROR,
312  "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
313  return AVERROR_INVALIDDATA;
314  }
315 
316  if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
317  av_log(ctx->avctx, AV_LOG_ERROR,
318  "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
319  return AVERROR_INVALIDDATA;
320  }
321 
322  for (i = 0; i < ctx->mb_height; i++) {
323  ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
324  ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
325  i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
326  if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
327  av_log(ctx->avctx, AV_LOG_ERROR,
328  "invalid mb scan index (%"PRIu32" vs %u).\n",
329  ctx->mb_scan_index[i], buf_size - ctx->data_offset);
330  return AVERROR_INVALIDDATA;
331  }
332  }
333 
334  return 0;
335 }
336 
338  RowContext *row,
339  int n,
340  int index_bits,
341  int level_bias,
342  int level_shift,
343  int dc_shift)
344 {
345  int i, j, index1, index2, len, flags;
346  int level, component, sign;
347  const int *scale;
348  const uint8_t *weight_matrix;
349  const uint8_t *ac_info = ctx->cid_table->ac_info;
350  int16_t *block = row->blocks[n];
351  const int eob_index = ctx->cid_table->eob_index;
352  int ret = 0;
353  OPEN_READER(bs, &row->gb);
354 
355  ctx->bdsp.clear_block(block);
356 
357  if (!ctx->is_444) {
358  if (n & 2) {
359  component = 1 + (n & 1);
360  scale = row->chroma_scale;
361  weight_matrix = ctx->cid_table->chroma_weight;
362  } else {
363  component = 0;
364  scale = row->luma_scale;
365  weight_matrix = ctx->cid_table->luma_weight;
366  }
367  } else {
368  component = (n >> 1) % 3;
369  if (component) {
370  scale = row->chroma_scale;
371  weight_matrix = ctx->cid_table->chroma_weight;
372  } else {
373  scale = row->luma_scale;
374  weight_matrix = ctx->cid_table->luma_weight;
375  }
376  }
377 
378  UPDATE_CACHE(bs, &row->gb);
379  GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
380  if (len) {
381  level = GET_CACHE(bs, &row->gb);
382  LAST_SKIP_BITS(bs, &row->gb, len);
383  sign = ~level >> 31;
384  level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
385  row->last_dc[component] += level * (1 << dc_shift);
386  }
387  block[0] = row->last_dc[component];
388 
389  i = 0;
390 
391  UPDATE_CACHE(bs, &row->gb);
392  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
393  DNXHD_VLC_BITS, 2);
394 
395  while (index1 != eob_index) {
396  level = ac_info[2*index1+0];
397  flags = ac_info[2*index1+1];
398 
399  sign = SHOW_SBITS(bs, &row->gb, 1);
400  SKIP_BITS(bs, &row->gb, 1);
401 
402  if (flags & 1) {
403  level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
404  SKIP_BITS(bs, &row->gb, index_bits);
405  }
406 
407  if (flags & 2) {
408  UPDATE_CACHE(bs, &row->gb);
409  GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
410  DNXHD_VLC_BITS, 2);
411  i += ctx->cid_table->run[index2];
412  }
413 
414  if (++i > 63) {
415  av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
416  ret = -1;
417  break;
418  }
419 
420  j = ctx->scantable.permutated[i];
421  level *= scale[i];
422  level += scale[i] >> 1;
423  if (level_bias < 32 || weight_matrix[i] != level_bias)
424  level += level_bias; // 1<<(level_shift-1)
425  level >>= level_shift;
426 
427  block[j] = (level ^ sign) - sign;
428 
429  UPDATE_CACHE(bs, &row->gb);
430  GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
431  DNXHD_VLC_BITS, 2);
432  }
433 
434  CLOSE_READER(bs, &row->gb);
435  return ret;
436 }
437 
439  RowContext *row, int n)
440 {
441  return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
442 }
443 
445  RowContext *row, int n)
446 {
447  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
448 }
449 
451  RowContext *row, int n)
452 {
453  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
454 }
455 
457  RowContext *row, int n)
458 {
459  return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
460 }
461 
463  RowContext *row, int n)
464 {
465  return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
466 }
467 
469  AVFrame *frame, int x, int y)
470 {
471  int shift1 = ctx->bit_depth >= 10;
472  int dct_linesize_luma = frame->linesize[0];
473  int dct_linesize_chroma = frame->linesize[1];
474  uint8_t *dest_y, *dest_u, *dest_v;
475  int dct_y_offset, dct_x_offset;
476  int qscale, i, act;
477  int interlaced_mb = 0;
478 
479  if (ctx->mbaff) {
480  interlaced_mb = get_bits1(&row->gb);
481  qscale = get_bits(&row->gb, 10);
482  } else {
483  qscale = get_bits(&row->gb, 11);
484  }
485  act = get_bits1(&row->gb);
486  if (act) {
487  if (!ctx->act) {
488  static int act_warned;
489  if (!act_warned) {
490  act_warned = 1;
491  av_log(ctx->avctx, AV_LOG_ERROR,
492  "ACT flag set, in violation of frame header.\n");
493  }
494  } else if (row->format == -1) {
495  row->format = act;
496  } else if (row->format != act) {
497  row->format = 2; // Variable
498  }
499  }
500 
501  if (qscale != row->last_qscale) {
502  for (i = 0; i < 64; i++) {
503  row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
504  row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
505  }
506  row->last_qscale = qscale;
507  }
508 
509  for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
510  if (ctx->decode_dct_block(ctx, row, i) < 0)
511  return AVERROR_INVALIDDATA;
512  }
513 
514  if (frame->interlaced_frame) {
515  dct_linesize_luma <<= 1;
516  dct_linesize_chroma <<= 1;
517  }
518 
519  dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
520  dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
521  dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
522 
523  if (frame->interlaced_frame && ctx->cur_field) {
524  dest_y += frame->linesize[0];
525  dest_u += frame->linesize[1];
526  dest_v += frame->linesize[2];
527  }
528  if (interlaced_mb) {
529  dct_linesize_luma <<= 1;
530  dct_linesize_chroma <<= 1;
531  }
532 
533  dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
534  dct_x_offset = 8 << shift1;
535  if (!ctx->is_444) {
536  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
537  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
538  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
539  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
540 
541  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
542  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
543  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
544  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
545  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
546  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
547  }
548  } else {
549  ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
550  ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
551  ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
552  ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
553 
554  if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
555  dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
556  ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
557  ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
558  ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
559  ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
560  ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
561  ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
562  ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
563  ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
564  }
565  }
566 
567  return 0;
568 }
569 
571  int rownb, int threadnb)
572 {
573  const DNXHDContext *ctx = avctx->priv_data;
574  uint32_t offset = ctx->mb_scan_index[rownb];
575  RowContext *row = ctx->rows + threadnb;
576  int x;
577 
578  row->last_dc[0] =
579  row->last_dc[1] =
580  row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
581  init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
582  for (x = 0; x < ctx->mb_width; x++) {
583  //START_TIMER;
584  int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
585  if (ret < 0) {
586  row->errors++;
587  return ret;
588  }
589  //STOP_TIMER("decode macroblock");
590  }
591 
592  return 0;
593 }
594 
596  int *got_frame, AVPacket *avpkt)
597 {
598  const uint8_t *buf = avpkt->data;
599  int buf_size = avpkt->size;
600  DNXHDContext *ctx = avctx->priv_data;
601  ThreadFrame frame = { .f = data };
602  AVFrame *picture = data;
603  int first_field = 1;
604  int ret, i;
605 
606  ff_dlog(avctx, "frame size %d\n", buf_size);
607 
608  for (i = 0; i < avctx->thread_count; i++)
609  ctx->rows[i].format = -1;
610 
611 decode_coding_unit:
612  if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
613  return ret;
614 
615  if ((avctx->width || avctx->height) &&
616  (ctx->width != avctx->width || ctx->height != avctx->height)) {
617  av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
618  avctx->width, avctx->height, ctx->width, ctx->height);
619  first_field = 1;
620  }
621  if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
622  av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
624  first_field = 1;
625  }
626 
627  avctx->pix_fmt = ctx->pix_fmt;
628  ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
629  if (ret < 0)
630  return ret;
631 
632  if (first_field) {
633  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
634  return ret;
635  picture->pict_type = AV_PICTURE_TYPE_I;
636  picture->key_frame = 1;
637  }
638 
639  ctx->buf_size = buf_size - ctx->data_offset;
640  ctx->buf = buf + ctx->data_offset;
641  avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
642 
643  if (first_field && picture->interlaced_frame) {
644  buf += ctx->cid_table->coding_unit_size;
645  buf_size -= ctx->cid_table->coding_unit_size;
646  first_field = 0;
647  goto decode_coding_unit;
648  }
649 
650  ret = 0;
651  for (i = 0; i < avctx->thread_count; i++) {
652  ret += ctx->rows[i].errors;
653  ctx->rows[i].errors = 0;
654  }
655 
656  if (ctx->act) {
657  static int act_warned;
658  int format = ctx->rows[0].format;
659  for (i = 1; i < avctx->thread_count; i++) {
660  if (ctx->rows[i].format != format &&
661  ctx->rows[i].format != -1 /* not run */) {
662  format = 2;
663  break;
664  }
665  }
666  switch (format) {
667  case -1:
668  case 2:
669  if (!act_warned) {
670  act_warned = 1;
671  av_log(ctx->avctx, AV_LOG_ERROR,
672  "Unsupported: variable ACT flag.\n");
673  }
674  break;
675  case 0:
676  ctx->pix_fmt = ctx->bit_depth==10
678  break;
679  case 1:
680  ctx->pix_fmt = ctx->bit_depth==10
682  break;
683  }
684  }
685  avctx->pix_fmt = ctx->pix_fmt;
686  if (ret) {
687  av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
688  return AVERROR_INVALIDDATA;
689  }
690 
691  *got_frame = 1;
692  return avpkt->size;
693 }
694 
696 {
697  DNXHDContext *ctx = avctx->priv_data;
698 
699  ff_free_vlc(&ctx->ac_vlc);
700  ff_free_vlc(&ctx->dc_vlc);
701  ff_free_vlc(&ctx->run_vlc);
702 
703  av_freep(&ctx->rows);
704 
705  return 0;
706 }
707 
709  .name = "dnxhd",
710  .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
711  .type = AVMEDIA_TYPE_VIDEO,
712  .id = AV_CODEC_ID_DNXHD,
713  .priv_data_size = sizeof(DNXHDContext),
715  .close = dnxhd_decode_close,
717  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
721 };
#define FF_PROFILE_DNXHD
Definition: avcodec.h:3250
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:456
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:438
#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:193
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:1934
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:211
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:1658
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:367
const CIDEntry ff_dnxhd_cid_table[]
Definition: dnxhddata.c:935
const uint16_t * run_codes
Definition: dnxhddata.h:55
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:2143
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:1960
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:3133
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:3235
VLC dc_vlc
Definition: dnxhddec.c:64
AVCodec.
Definition: avcodec.h:3681
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:695
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:456
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:104
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:337
uint8_t * data
Definition: avcodec.h:1657
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:331
unsigned int coding_unit_size
Definition: dnxhddata.h:46
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define DNXHD_DC_VLC_BITS
Definition: dnxhddec.c:77
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:356
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:899
high precision timer, useful to profile code
#define FFALIGN(x, a)
Definition: macros.h:48
enum AVPixelFormat pix_fmt
Definition: dnxhddec.c:59
#define av_log(a,...)
static int first_field(const struct video_data *s)
Definition: v4l2.c:230
VLC ac_vlc
Definition: dnxhddec.c:64
const uint8_t * ac_bits
Definition: dnxhddata.h:54
const uint8_t * ac_info
Definition: dnxhddata.h:54
const uint16_t * ac_codes
Definition: dnxhddata.h:53
#define UPDATE_CACHE(name, gb)
Definition: get_bits.h:160
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_dnxhd_get_cid_table(int cid)
Definition: dnxhddata.c:1090
unsigned int width
Definition: dnxhddata.h:44
static const int shift1[6]
Definition: dxa.c:50
static int dnxhd_decode_row(AVCodecContext *avctx, void *data, int rownb, int threadnb)
Definition: dnxhddec.c:570
#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:179
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1827
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:3688
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
#define FF_PROFILE_DNXHR_LB
Definition: avcodec.h:3251
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:450
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1060
static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
Definition: dnxhddata.h:87
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:218
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:267
int width
picture width / height.
Definition: avcodec.h:1919
#define NEG_USR32(a, s)
Definition: mathops.h:166
const uint8_t * run
Definition: dnxhddata.h:56
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:150
AVFormatContext * ctx
Definition: movenc.c:48
#define LAST_SKIP_BITS(name, gb, num)
Definition: get_bits.h:181
ScanTable scantable
Definition: dnxhddec.c:66
int n
Definition: avisynth_c.h:684
unsigned int mb_width
Definition: dnxhddec.c:60
#define GET_VLC(code, name, gb, table, bits, max_depth)
If the vlc code is invalid and max_depth=1, then no bits will be removed.
Definition: get_bits.h:477
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:96
#define FF_PROFILE_DNXHR_HQ
Definition: avcodec.h:3253
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
Definition: dnxhddec.c:468
#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:3161
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1064
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:224
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:444
main external API structure.
Definition: avcodec.h:1732
#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:1934
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:2462
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
Definition: dnxhddata.h:68
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:425
#define GET_CACHE(name, gb)
Definition: get_bits.h:197
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
#define FF_PROFILE_DNXHR_SQ
Definition: avcodec.h:3252
int is_444
Definition: dnxhddec.c:69
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:368
#define SIZE_SPECIFIER
Definition: internal.h:255
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:352
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:358
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
Definition: dnxhddec.c:108
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:207
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:3254
GetBitContext gb
Definition: dnxhddec.c:43
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h: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:3255
int buf_size
Definition: dnxhddec.c:56
void * priv_data
Definition: avcodec.h:1774
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:336
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:595
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:3221
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:262
BlockDSPContext bdsp
Definition: dnxhddec.c:54
AVCodec ff_dnxhd_decoder
Definition: dnxhddec.c:708
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:2249
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1634
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:997
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
Definition: dnxhddec.c:462
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:90