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
7 * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
8 * Slice multithreading and MB interlaced support added by Christophe Gisquet
10 * This file is part of FFmpeg.
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.
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.
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
27 #include "libavutil/imgutils.h"
28 #include "libavutil/timer.h"
31 #define UNCHECKED_BITSTREAM_READER 1
33 #include "dnxhddata.h"
39 typedef struct RowContext {
40 DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
47 /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
51 typedef struct DNXHDContext {
52 AVCodecContext *avctx;
57 int64_t cid; ///< compression id
58 unsigned int width, height;
59 enum AVPixelFormat pix_fmt;
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
64 VLC ac_vlc, dc_vlc, run_vlc;
67 const CIDEntry *cid_table;
68 int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
72 int (*decode_dct_block)(const struct DNXHDContext *ctx,
73 RowContext *row, int n);
76 #define DNXHD_VLC_BITS 9
77 #define DNXHD_DC_VLC_BITS 7
79 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
80 RowContext *row, int n);
81 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
82 RowContext *row, int n);
83 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
84 RowContext *row, int n);
85 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
86 RowContext *row, int n);
87 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
88 RowContext *row, int n);
90 static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
92 DNXHDContext *ctx = avctx->priv_data;
96 if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
97 avctx->colorspace = AVCOL_SPC_BT709;
100 avctx->coded_width = FFALIGN(avctx->width, 16);
101 avctx->coded_height = FFALIGN(avctx->height, 16);
103 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
105 return AVERROR(ENOMEM);
110 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
112 if (cid != ctx->cid) {
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);
119 if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
120 ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
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;
124 ctx->cid_table = &ff_dnxhd_cid_table[index];
125 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
127 ff_free_vlc(&ctx->ac_vlc);
128 ff_free_vlc(&ctx->dc_vlc);
129 ff_free_vlc(&ctx->run_vlc);
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);
146 static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
148 DNXHDContext *ctx = avctx->priv_data;
151 // make sure VLC tables will be loaded when cid is parsed
154 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
156 return AVERROR(ENOMEM);
161 static int dnxhd_get_profile(int cid)
165 return FF_PROFILE_DNXHR_444;
167 return FF_PROFILE_DNXHR_HQX;
169 return FF_PROFILE_DNXHR_HQ;
171 return FF_PROFILE_DNXHR_SQ;
173 return FF_PROFILE_DNXHR_LB;
175 return FF_PROFILE_DNXHD;
178 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
179 const uint8_t *buf, int buf_size,
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;
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;
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);
207 ctx->mbaff = (buf[0x6] >> 5) & 1;
209 ctx->height = AV_RB16(buf + 0x18);
210 ctx->width = AV_RB16(buf + 0x1a);
212 switch(buf[0x21] >> 5) {
213 case 1: bitdepth = 8; break;
214 case 2: bitdepth = 10; break;
215 case 3: bitdepth = 12; break;
217 av_log(ctx->avctx, AV_LOG_ERROR,
218 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
219 return AVERROR_INVALIDDATA;
222 cid = AV_RB32(buf + 0x28);
224 ctx->avctx->profile = dnxhd_get_profile(cid);
226 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
228 if (ctx->mbaff && ctx->cid_table->cid != 1260)
229 av_log(ctx->avctx, AV_LOG_WARNING,
230 "Adaptive MB interlace flag in an unsupported profile.\n");
232 ctx->act = buf[0x2C] & 7;
233 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
234 av_log(ctx->avctx, AV_LOG_WARNING,
235 "Adaptive color transform in an unsupported profile.\n");
237 ctx->is_444 = (buf[0x2C] >> 6) & 1;
240 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
241 return AVERROR_INVALIDDATA;
242 } else if (bitdepth == 10) {
243 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
244 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
247 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
248 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
251 } else if (bitdepth == 12) {
252 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
253 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
254 } else if (bitdepth == 10) {
255 if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
256 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
258 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
259 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
261 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
262 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
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);
269 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
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) {
277 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
278 &ctx->avctx->sample_aspect_ratio.den,
279 ctx->width, ctx->cid_table->width, 255);
280 ctx->width = ctx->cid_table->width;
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;
289 ctx->mb_width = (ctx->width + 15)>> 4;
290 ctx->mb_height = AV_RB16(buf + 0x16c);
292 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
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);
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);
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;
308 ctx->data_offset = 0x280;
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;
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;
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;
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;
343 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
351 int i, j, index1, index2, len, flags;
352 int level, component, sign;
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;
359 OPEN_READER(bs, &row->gb);
361 ctx->bdsp.clear_block(block);
365 component = 1 + (n & 1);
366 scale = row->chroma_scale;
367 weight_matrix = ctx->cid_table->chroma_weight;
370 scale = row->luma_scale;
371 weight_matrix = ctx->cid_table->luma_weight;
374 component = (n >> 1) % 3;
376 scale = row->chroma_scale;
377 weight_matrix = ctx->cid_table->chroma_weight;
379 scale = row->luma_scale;
380 weight_matrix = ctx->cid_table->luma_weight;
384 UPDATE_CACHE(bs, &row->gb);
385 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
391 level = GET_CACHE(bs, &row->gb);
392 LAST_SKIP_BITS(bs, &row->gb, len);
394 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
395 row->last_dc[component] += level * (1 << dc_shift);
397 block[0] = row->last_dc[component];
401 UPDATE_CACHE(bs, &row->gb);
402 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
405 while (index1 != eob_index) {
406 level = ac_info[2*index1+0];
407 flags = ac_info[2*index1+1];
409 sign = SHOW_SBITS(bs, &row->gb, 1);
410 SKIP_BITS(bs, &row->gb, 1);
413 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
414 SKIP_BITS(bs, &row->gb, index_bits);
418 UPDATE_CACHE(bs, &row->gb);
419 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
421 i += ctx->cid_table->run[index2];
425 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
430 j = ctx->scantable.permutated[i];
432 level += scale[i] >> 1;
433 if (level_bias < 32 || weight_matrix[i] != level_bias)
434 level += level_bias; // 1<<(level_shift-1)
435 level >>= level_shift;
437 block[j] = (level ^ sign) - sign;
439 UPDATE_CACHE(bs, &row->gb);
440 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
444 CLOSE_READER(bs, &row->gb);
448 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
449 RowContext *row, int n)
451 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
454 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
455 RowContext *row, int n)
457 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
460 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
461 RowContext *row, int n)
463 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
466 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
467 RowContext *row, int n)
469 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
472 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
473 RowContext *row, int n)
475 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
478 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
479 AVFrame *frame, int x, int y)
481 int shift1 = ctx->bit_depth >= 10;
482 int dct_linesize_luma = frame->linesize[0];
483 int dct_linesize_chroma = frame->linesize[1];
484 uint8_t *dest_y, *dest_u, *dest_v;
485 int dct_y_offset, dct_x_offset;
487 int interlaced_mb = 0;
490 interlaced_mb = get_bits1(&row->gb);
491 qscale = get_bits(&row->gb, 10);
493 qscale = get_bits(&row->gb, 11);
495 act = get_bits1(&row->gb);
498 static int act_warned;
501 av_log(ctx->avctx, AV_LOG_ERROR,
502 "ACT flag set, in violation of frame header.\n");
504 } else if (row->format == -1) {
506 } else if (row->format != act) {
507 row->format = 2; // Variable
511 if (qscale != row->last_qscale) {
512 for (i = 0; i < 64; i++) {
513 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
514 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
516 row->last_qscale = qscale;
519 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
520 if (ctx->decode_dct_block(ctx, row, i) < 0)
521 return AVERROR_INVALIDDATA;
524 if (frame->interlaced_frame) {
525 dct_linesize_luma <<= 1;
526 dct_linesize_chroma <<= 1;
529 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
530 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
531 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
533 if (frame->interlaced_frame && ctx->cur_field) {
534 dest_y += frame->linesize[0];
535 dest_u += frame->linesize[1];
536 dest_v += frame->linesize[2];
539 dct_linesize_luma <<= 1;
540 dct_linesize_chroma <<= 1;
543 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
544 dct_x_offset = 8 << shift1;
546 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
547 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
548 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
549 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
551 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
552 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
553 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
554 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
555 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
556 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
559 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
560 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
561 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
562 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
564 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
565 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
566 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
567 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
568 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
569 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
570 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
571 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
572 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
573 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
580 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
581 int rownb, int threadnb)
583 const DNXHDContext *ctx = avctx->priv_data;
584 uint32_t offset = ctx->mb_scan_index[rownb];
585 RowContext *row = ctx->rows + threadnb;
590 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
591 init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
592 for (x = 0; x < ctx->mb_width; x++) {
594 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
599 //STOP_TIMER("decode macroblock");
605 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
606 int *got_frame, AVPacket *avpkt)
608 const uint8_t *buf = avpkt->data;
609 int buf_size = avpkt->size;
610 DNXHDContext *ctx = avctx->priv_data;
611 ThreadFrame frame = { .f = data };
612 AVFrame *picture = data;
616 ff_dlog(avctx, "frame size %d\n", buf_size);
618 for (i = 0; i < avctx->thread_count; i++)
619 ctx->rows[i].format = -1;
622 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
625 if ((avctx->width || avctx->height) &&
626 (ctx->width != avctx->width || ctx->height != avctx->height)) {
627 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
628 avctx->width, avctx->height, ctx->width, ctx->height);
631 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
632 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
633 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
637 avctx->pix_fmt = ctx->pix_fmt;
638 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
643 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
645 picture->pict_type = AV_PICTURE_TYPE_I;
646 picture->key_frame = 1;
649 ctx->buf_size = buf_size - ctx->data_offset;
650 ctx->buf = buf + ctx->data_offset;
651 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
653 if (first_field && picture->interlaced_frame) {
654 buf += ctx->cid_table->coding_unit_size;
655 buf_size -= ctx->cid_table->coding_unit_size;
657 goto decode_coding_unit;
661 for (i = 0; i < avctx->thread_count; i++) {
662 ret += ctx->rows[i].errors;
663 ctx->rows[i].errors = 0;
667 static int act_warned;
668 int format = ctx->rows[0].format;
669 for (i = 1; i < avctx->thread_count; i++) {
670 if (ctx->rows[i].format != format &&
671 ctx->rows[i].format != -1 /* not run */) {
681 av_log(ctx->avctx, AV_LOG_ERROR,
682 "Unsupported: variable ACT flag.\n");
686 ctx->pix_fmt = ctx->bit_depth==10
687 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
690 ctx->pix_fmt = ctx->bit_depth==10
691 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
695 avctx->pix_fmt = ctx->pix_fmt;
697 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
698 return AVERROR_INVALIDDATA;
705 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
707 DNXHDContext *ctx = avctx->priv_data;
709 ff_free_vlc(&ctx->ac_vlc);
710 ff_free_vlc(&ctx->dc_vlc);
711 ff_free_vlc(&ctx->run_vlc);
713 av_freep(&ctx->rows);
718 AVCodec ff_dnxhd_decoder = {
720 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
721 .type = AVMEDIA_TYPE_VIDEO,
722 .id = AV_CODEC_ID_DNXHD,
723 .priv_data_size = sizeof(DNXHDContext),
724 .init = dnxhd_decode_init,
725 .close = dnxhd_decode_close,
726 .decode = dnxhd_decode_frame,
727 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
728 AV_CODEC_CAP_SLICE_THREADS,
729 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
730 .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),