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[256];
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 avctx->colorspace = AVCOL_SPC_BT709;
98 avctx->coded_width = FFALIGN(avctx->width, 16);
99 avctx->coded_height = FFALIGN(avctx->height, 16);
101 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
103 return AVERROR(ENOMEM);
108 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
110 if (cid != ctx->cid) {
113 if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
114 av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
115 return AVERROR(ENOSYS);
117 if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
118 ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
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;
122 ctx->cid_table = &ff_dnxhd_cid_table[index];
123 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);
125 ff_free_vlc(&ctx->ac_vlc);
126 ff_free_vlc(&ctx->dc_vlc);
127 ff_free_vlc(&ctx->run_vlc);
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);
144 static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
146 DNXHDContext *ctx = avctx->priv_data;
148 // make sure VLC tables will be loaded when cid is parsed
151 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
153 return AVERROR(ENOMEM);
158 static int dnxhd_get_profile(int cid)
162 return FF_PROFILE_DNXHR_444;
164 return FF_PROFILE_DNXHR_HQX;
166 return FF_PROFILE_DNXHR_HQ;
168 return FF_PROFILE_DNXHR_SQ;
170 return FF_PROFILE_DNXHR_LB;
172 return FF_PROFILE_DNXHD;
175 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
176 const uint8_t *buf, int buf_size,
180 int old_bit_depth = ctx->bit_depth, bitdepth;
181 uint64_t header_prefix;
182 if (buf_size < 0x280) {
183 av_log(ctx->avctx, AV_LOG_ERROR,
184 "buffer too small (%d < 640).\n", buf_size);
185 return AVERROR_INVALIDDATA;
188 header_prefix = ff_dnxhd_parse_header_prefix(buf);
189 if (header_prefix == 0) {
190 av_log(ctx->avctx, AV_LOG_ERROR,
191 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
192 buf[0], buf[1], buf[2], buf[3], buf[4]);
193 return AVERROR_INVALIDDATA;
195 if (buf[5] & 2) { /* interlaced */
196 ctx->cur_field = buf[5] & 1;
197 frame->interlaced_frame = 1;
198 frame->top_field_first = first_field ^ ctx->cur_field;
199 av_log(ctx->avctx, AV_LOG_DEBUG,
200 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
204 ctx->mbaff = (buf[0x6] >> 5) & 1;
206 ctx->height = AV_RB16(buf + 0x18);
207 ctx->width = AV_RB16(buf + 0x1a);
209 switch(buf[0x21] >> 5) {
210 case 1: bitdepth = 8; break;
211 case 2: bitdepth = 10; break;
212 case 3: bitdepth = 12; break;
214 av_log(ctx->avctx, AV_LOG_ERROR,
215 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
216 return AVERROR_INVALIDDATA;
219 cid = AV_RB32(buf + 0x28);
221 ctx->avctx->profile = dnxhd_get_profile(cid);
223 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
225 if (ctx->mbaff && ctx->cid_table->cid != 1260)
226 av_log(ctx->avctx, AV_LOG_WARNING,
227 "Adaptive MB interlace flag in an unsupported profile.\n");
229 ctx->act = buf[0x2C] & 7;
230 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
231 av_log(ctx->avctx, AV_LOG_WARNING,
232 "Adaptive color transform in an unsupported profile.\n");
234 ctx->is_444 = (buf[0x2C] >> 6) & 1;
237 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
238 return AVERROR_INVALIDDATA;
239 } else if (bitdepth == 10) {
240 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
241 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
244 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
245 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
248 } else if (bitdepth == 12) {
249 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
250 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
251 } else if (bitdepth == 10) {
252 if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
253 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
255 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
256 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
258 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
259 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
262 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
263 if (ctx->bit_depth != old_bit_depth) {
264 ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
265 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
266 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
270 // make sure profile size constraints are respected
271 // DNx100 allows 1920->1440 and 1280->960 subsampling
272 if (ctx->width != ctx->cid_table->width &&
273 ctx->cid_table->width != DNXHD_VARIABLE) {
274 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
275 &ctx->avctx->sample_aspect_ratio.den,
276 ctx->width, ctx->cid_table->width, 255);
277 ctx->width = ctx->cid_table->width;
280 if (buf_size < ctx->cid_table->coding_unit_size) {
281 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %d).\n",
282 buf_size, ctx->cid_table->coding_unit_size);
283 return AVERROR_INVALIDDATA;
286 ctx->mb_width = (ctx->width + 15)>> 4;
287 ctx->mb_height = buf[0x16d];
289 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
292 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
293 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
294 ctx->bit_depth, ctx->mbaff, ctx->act);
296 // Newer format supports variable mb_scan_index sizes
297 if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
298 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
300 if (ctx->mb_height > 68 ||
301 (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
302 av_log(ctx->avctx, AV_LOG_ERROR,
303 "mb height too big: %d\n", ctx->mb_height);
304 return AVERROR_INVALIDDATA;
306 ctx->data_offset = 0x280;
309 if (buf_size < ctx->data_offset) {
310 av_log(ctx->avctx, AV_LOG_ERROR,
311 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
312 return AVERROR_INVALIDDATA;
315 av_assert0((unsigned)ctx->mb_height <= FF_ARRAY_ELEMS(ctx->mb_scan_index));
317 for (i = 0; i < ctx->mb_height; i++) {
318 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
319 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %u\n", i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
320 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
321 av_log(ctx->avctx, AV_LOG_ERROR,
322 "invalid mb scan index (%u vs %u).\n",
323 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
324 return AVERROR_INVALIDDATA;
331 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
339 int i, j, index1, index2, len, flags;
340 int level, component, sign;
342 const uint8_t *weight_matrix;
343 const uint8_t *ac_info = ctx->cid_table->ac_info;
344 int16_t *block = row->blocks[n];
345 const int eob_index = ctx->cid_table->eob_index;
347 OPEN_READER(bs, &row->gb);
349 ctx->bdsp.clear_block(block);
353 component = 1 + (n & 1);
354 scale = row->chroma_scale;
355 weight_matrix = ctx->cid_table->chroma_weight;
358 scale = row->luma_scale;
359 weight_matrix = ctx->cid_table->luma_weight;
362 component = (n >> 1) % 3;
364 scale = row->chroma_scale;
365 weight_matrix = ctx->cid_table->chroma_weight;
367 scale = row->luma_scale;
368 weight_matrix = ctx->cid_table->luma_weight;
372 UPDATE_CACHE(bs, &row->gb);
373 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
375 level = GET_CACHE(bs, &row->gb);
376 LAST_SKIP_BITS(bs, &row->gb, len);
378 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
379 row->last_dc[component] += level * (1 << dc_shift);
381 block[0] = row->last_dc[component];
385 UPDATE_CACHE(bs, &row->gb);
386 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
389 while (index1 != eob_index) {
390 level = ac_info[2*index1+0];
391 flags = ac_info[2*index1+1];
393 sign = SHOW_SBITS(bs, &row->gb, 1);
394 SKIP_BITS(bs, &row->gb, 1);
397 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
398 SKIP_BITS(bs, &row->gb, index_bits);
402 UPDATE_CACHE(bs, &row->gb);
403 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
405 i += ctx->cid_table->run[index2];
409 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
414 j = ctx->scantable.permutated[i];
416 level += scale[i] >> 1;
417 if (level_bias < 32 || weight_matrix[i] != level_bias)
418 level += level_bias; // 1<<(level_shift-1)
419 level >>= level_shift;
421 block[j] = (level ^ sign) - sign;
423 UPDATE_CACHE(bs, &row->gb);
424 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
428 CLOSE_READER(bs, &row->gb);
432 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
433 RowContext *row, int n)
435 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
438 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
439 RowContext *row, int n)
441 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
444 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
445 RowContext *row, int n)
447 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
450 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
451 RowContext *row, int n)
453 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
456 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
457 RowContext *row, int n)
459 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
462 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
463 AVFrame *frame, int x, int y)
465 int shift1 = ctx->bit_depth >= 10;
466 int dct_linesize_luma = frame->linesize[0];
467 int dct_linesize_chroma = frame->linesize[1];
468 uint8_t *dest_y, *dest_u, *dest_v;
469 int dct_y_offset, dct_x_offset;
471 int interlaced_mb = 0;
474 interlaced_mb = get_bits1(&row->gb);
475 qscale = get_bits(&row->gb, 10);
477 qscale = get_bits(&row->gb, 11);
479 act = get_bits1(&row->gb);
482 static int act_warned;
485 av_log(ctx->avctx, AV_LOG_ERROR,
486 "ACT flag set, in violation of frame header.\n");
488 } else if (row->format == -1) {
490 } else if (row->format != act) {
491 row->format = 2; // Variable
495 if (qscale != row->last_qscale) {
496 for (i = 0; i < 64; i++) {
497 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
498 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
500 row->last_qscale = qscale;
503 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
504 if (ctx->decode_dct_block(ctx, row, i) < 0)
505 return AVERROR_INVALIDDATA;
508 if (frame->interlaced_frame) {
509 dct_linesize_luma <<= 1;
510 dct_linesize_chroma <<= 1;
513 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
514 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
515 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
517 if (frame->interlaced_frame && ctx->cur_field) {
518 dest_y += frame->linesize[0];
519 dest_u += frame->linesize[1];
520 dest_v += frame->linesize[2];
523 dct_linesize_luma <<= 1;
524 dct_linesize_chroma <<= 1;
527 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
528 dct_x_offset = 8 << shift1;
530 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
531 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
532 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
533 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
535 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
536 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
537 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
538 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
539 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
540 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
543 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
544 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
545 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
546 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
548 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
549 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
550 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
551 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
552 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
553 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
554 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
555 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
556 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
557 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
564 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
565 int rownb, int threadnb)
567 const DNXHDContext *ctx = avctx->priv_data;
568 uint32_t offset = ctx->mb_scan_index[rownb];
569 RowContext *row = ctx->rows + threadnb;
574 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
575 init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
576 for (x = 0; x < ctx->mb_width; x++) {
578 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
583 //STOP_TIMER("decode macroblock");
589 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
590 int *got_frame, AVPacket *avpkt)
592 const uint8_t *buf = avpkt->data;
593 int buf_size = avpkt->size;
594 DNXHDContext *ctx = avctx->priv_data;
595 ThreadFrame frame = { .f = data };
596 AVFrame *picture = data;
600 ff_dlog(avctx, "frame size %d\n", buf_size);
602 for (i = 0; i < avctx->thread_count; i++)
603 ctx->rows[i].format = -1;
606 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
609 if ((avctx->width || avctx->height) &&
610 (ctx->width != avctx->width || ctx->height != avctx->height)) {
611 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %dx%d\n",
612 avctx->width, avctx->height, ctx->width, ctx->height);
615 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
616 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
617 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
621 avctx->pix_fmt = ctx->pix_fmt;
622 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
627 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
629 picture->pict_type = AV_PICTURE_TYPE_I;
630 picture->key_frame = 1;
633 ctx->buf_size = buf_size - ctx->data_offset;
634 ctx->buf = buf + ctx->data_offset;
635 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
637 if (first_field && picture->interlaced_frame) {
638 buf += ctx->cid_table->coding_unit_size;
639 buf_size -= ctx->cid_table->coding_unit_size;
641 goto decode_coding_unit;
645 for (i = 0; i < avctx->thread_count; i++) {
646 ret += ctx->rows[i].errors;
647 ctx->rows[i].errors = 0;
651 static int act_warned;
652 int format = ctx->rows[0].format;
653 for (i = 1; i < avctx->thread_count; i++) {
654 if (ctx->rows[i].format != format &&
655 ctx->rows[i].format != -1 /* not run */) {
665 av_log(ctx->avctx, AV_LOG_ERROR,
666 "Unsupported: variable ACT flag.\n");
670 ctx->pix_fmt = ctx->bit_depth==10
671 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
674 ctx->pix_fmt = ctx->bit_depth==10
675 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
679 avctx->pix_fmt = ctx->pix_fmt;
681 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
682 return AVERROR_INVALIDDATA;
689 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
691 DNXHDContext *ctx = avctx->priv_data;
693 ff_free_vlc(&ctx->ac_vlc);
694 ff_free_vlc(&ctx->dc_vlc);
695 ff_free_vlc(&ctx->run_vlc);
697 av_freep(&ctx->rows);
702 AVCodec ff_dnxhd_decoder = {
704 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
705 .type = AVMEDIA_TYPE_VIDEO,
706 .id = AV_CODEC_ID_DNXHD,
707 .priv_data_size = sizeof(DNXHDContext),
708 .init = dnxhd_decode_init,
709 .close = dnxhd_decode_close,
710 .decode = dnxhd_decode_frame,
711 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
712 AV_CODEC_CAP_SLICE_THREADS,
713 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
714 .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),