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"
38 typedef struct RowContext {
39 DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
46 /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
50 typedef struct DNXHDContext {
51 AVCodecContext *avctx;
56 int64_t cid; ///< compression id
57 unsigned int width, height;
58 enum AVPixelFormat pix_fmt;
59 unsigned int mb_width, mb_height;
60 uint32_t *mb_scan_index;
61 int data_offset; // End of mb_scan_index, where macroblocks start
62 int cur_field; ///< current interlaced field
63 VLC ac_vlc, dc_vlc, run_vlc;
66 const CIDEntry *cid_table;
67 int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
71 int (*decode_dct_block)(const struct DNXHDContext *ctx,
72 RowContext *row, int n);
75 #define DNXHD_VLC_BITS 9
76 #define DNXHD_DC_VLC_BITS 7
78 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
79 RowContext *row, int n);
80 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
81 RowContext *row, int n);
82 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
83 RowContext *row, int n);
84 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
85 RowContext *row, int n);
86 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
87 RowContext *row, int n);
89 static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
91 DNXHDContext *ctx = avctx->priv_data;
95 avctx->colorspace = AVCOL_SPC_BT709;
97 avctx->coded_width = FFALIGN(avctx->width, 16);
98 avctx->coded_height = FFALIGN(avctx->height, 16);
100 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
102 return AVERROR(ENOMEM);
107 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
109 if (cid != ctx->cid) {
112 if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
113 av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
114 return AVERROR(ENOSYS);
116 if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
117 ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
118 av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
119 return AVERROR_INVALIDDATA;
121 ctx->cid_table = &ff_dnxhd_cid_table[index];
122 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);
124 ff_free_vlc(&ctx->ac_vlc);
125 ff_free_vlc(&ctx->dc_vlc);
126 ff_free_vlc(&ctx->run_vlc);
128 init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
129 ctx->cid_table->ac_bits, 1, 1,
130 ctx->cid_table->ac_codes, 2, 2, 0);
131 init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth + 4,
132 ctx->cid_table->dc_bits, 1, 1,
133 ctx->cid_table->dc_codes, 1, 1, 0);
134 init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
135 ctx->cid_table->run_bits, 1, 1,
136 ctx->cid_table->run_codes, 2, 2, 0);
143 static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
145 DNXHDContext *ctx = avctx->priv_data;
147 // make sure VLC tables will be loaded when cid is parsed
150 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
152 return AVERROR(ENOMEM);
157 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
158 const uint8_t *buf, int buf_size,
161 static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 };
162 static const uint8_t header_prefix444[] = { 0x00, 0x00, 0x02, 0x80, 0x02 };
163 static const uint8_t header_prefixhr1[] = { 0x00, 0x00, 0x02, 0x80, 0x03 };
164 static const uint8_t header_prefixhr2[] = { 0x00, 0x00, 0x03, 0x8C, 0x03 };
166 int old_bit_depth = ctx->bit_depth, bitdepth;
167 int old_mb_height = ctx->mb_height;
169 if (buf_size < 0x280) {
170 av_log(ctx->avctx, AV_LOG_ERROR,
171 "buffer too small (%d < 640).\n", buf_size);
172 return AVERROR_INVALIDDATA;
175 if (memcmp(buf, header_prefix, 5) && memcmp(buf, header_prefix444, 5) &&
176 memcmp(buf, header_prefixhr1, 5) && memcmp(buf, header_prefixhr2, 5)) {
177 av_log(ctx->avctx, AV_LOG_ERROR,
178 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
179 buf[0], buf[1], buf[2], buf[3], buf[4]);
180 return AVERROR_INVALIDDATA;
182 if (buf[5] & 2) { /* interlaced */
183 ctx->cur_field = buf[5] & 1;
184 frame->interlaced_frame = 1;
185 frame->top_field_first = first_field ^ ctx->cur_field;
186 av_log(ctx->avctx, AV_LOG_DEBUG,
187 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
191 ctx->mbaff = (buf[0x6] >> 5) & 1;
193 ctx->height = AV_RB16(buf + 0x18);
194 ctx->width = AV_RB16(buf + 0x1a);
196 switch(buf[0x21] >> 5) {
197 case 1: bitdepth = 8; break;
198 case 2: bitdepth = 10; break;
199 case 3: bitdepth = 12; break;
201 av_log(ctx->avctx, AV_LOG_ERROR,
202 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
203 return AVERROR_INVALIDDATA;
206 cid = AV_RB32(buf + 0x28);
207 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
209 if (ctx->mbaff && ctx->cid_table->cid != 1260)
210 av_log(ctx->avctx, AV_LOG_WARNING,
211 "Adaptive MB interlace flag in an unsupported profile.\n");
213 ctx->act = buf[0x2C] & 7;
214 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
215 av_log(ctx->avctx, AV_LOG_WARNING,
216 "Adaptive color transform in an unsupported profile.\n");
218 ctx->is_444 = (buf[0x2C] >> 6) & 1;
221 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits\n");
222 return AVERROR_INVALIDDATA;
223 } else if (bitdepth == 10) {
224 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
225 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
228 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
229 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
232 } else if (bitdepth == 12) {
233 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
234 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
235 } else if (bitdepth == 10) {
236 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
237 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
239 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
240 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
243 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
244 if (ctx->bit_depth != old_bit_depth) {
245 ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
246 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
247 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
251 // make sure profile size constraints are respected
252 // DNx100 allows 1920->1440 and 1280->960 subsampling
253 if (ctx->width != ctx->cid_table->width &&
254 ctx->cid_table->width != DNXHD_VARIABLE) {
255 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
256 &ctx->avctx->sample_aspect_ratio.den,
257 ctx->width, ctx->cid_table->width, 255);
258 ctx->width = ctx->cid_table->width;
261 if (buf_size < ctx->cid_table->coding_unit_size) {
262 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %d).\n",
263 buf_size, ctx->cid_table->coding_unit_size);
264 return AVERROR_INVALIDDATA;
267 ctx->mb_width = (ctx->width + 15)>> 4;
268 ctx->mb_height = buf[0x16d];
270 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
273 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
274 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
275 ctx->bit_depth, ctx->mbaff, ctx->act);
277 // Newer format supports variable mb_scan_index sizes
278 if (!memcmp(buf, header_prefixhr2, 5)) {
279 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
281 if (ctx->mb_height > 68 ||
282 (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
283 av_log(ctx->avctx, AV_LOG_ERROR,
284 "mb height too big: %d\n", ctx->mb_height);
285 return AVERROR_INVALIDDATA;
287 ctx->data_offset = 0x280;
290 if (buf_size < ctx->data_offset) {
291 av_log(ctx->avctx, AV_LOG_ERROR,
292 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
293 return AVERROR_INVALIDDATA;
296 if (ctx->mb_height != old_mb_height) {
297 av_freep(&ctx->mb_scan_index);
299 ctx->mb_scan_index = av_mallocz_array(ctx->mb_height, sizeof(uint32_t));
300 if (!ctx->mb_scan_index)
301 return AVERROR(ENOMEM);
304 for (i = 0; i < ctx->mb_height; i++) {
305 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
306 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %u\n", i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
307 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
308 av_log(ctx->avctx, AV_LOG_ERROR,
309 "invalid mb scan index (%u vs %u).\n",
310 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
311 return AVERROR_INVALIDDATA;
318 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
326 int i, j, index1, index2, len, flags;
327 int level, component, sign;
329 const uint8_t *weight_matrix;
330 const uint8_t *ac_level = ctx->cid_table->ac_level;
331 const uint8_t *ac_flags = ctx->cid_table->ac_flags;
332 int16_t *block = row->blocks[n];
333 const int eob_index = ctx->cid_table->eob_index;
335 OPEN_READER(bs, &row->gb);
337 ctx->bdsp.clear_block(block);
341 component = 1 + (n & 1);
342 scale = row->chroma_scale;
343 weight_matrix = ctx->cid_table->chroma_weight;
346 scale = row->luma_scale;
347 weight_matrix = ctx->cid_table->luma_weight;
350 component = (n >> 1) % 3;
352 scale = row->chroma_scale;
353 weight_matrix = ctx->cid_table->chroma_weight;
355 scale = row->luma_scale;
356 weight_matrix = ctx->cid_table->luma_weight;
360 UPDATE_CACHE(bs, &row->gb);
361 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
363 level = GET_CACHE(bs, &row->gb);
364 LAST_SKIP_BITS(bs, &row->gb, len);
366 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
367 row->last_dc[component] += level << dc_shift;
369 block[0] = row->last_dc[component];
373 UPDATE_CACHE(bs, &row->gb);
374 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
377 while (index1 != eob_index) {
378 level = ac_level[index1];
379 flags = ac_flags[index1];
381 sign = SHOW_SBITS(bs, &row->gb, 1);
382 SKIP_BITS(bs, &row->gb, 1);
385 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
386 SKIP_BITS(bs, &row->gb, index_bits);
390 UPDATE_CACHE(bs, &row->gb);
391 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
393 i += ctx->cid_table->run[index2];
397 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
402 j = ctx->scantable.permutated[i];
404 level += scale[i] >> 1;
405 if (level_bias < 32 || weight_matrix[i] != level_bias)
406 level += level_bias; // 1<<(level_shift-1)
407 level >>= level_shift;
409 block[j] = (level ^ sign) - sign;
411 UPDATE_CACHE(bs, &row->gb);
412 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
416 CLOSE_READER(bs, &row->gb);
420 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
421 RowContext *row, int n)
423 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
426 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
427 RowContext *row, int n)
429 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
432 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
433 RowContext *row, int n)
435 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
438 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
439 RowContext *row, int n)
441 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
444 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
445 RowContext *row, int n)
447 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
450 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
451 AVFrame *frame, int x, int y)
453 int shift1 = ctx->bit_depth >= 10;
454 int dct_linesize_luma = frame->linesize[0];
455 int dct_linesize_chroma = frame->linesize[1];
456 uint8_t *dest_y, *dest_u, *dest_v;
457 int dct_y_offset, dct_x_offset;
459 int interlaced_mb = 0;
462 interlaced_mb = get_bits1(&row->gb);
463 qscale = get_bits(&row->gb, 10);
465 qscale = get_bits(&row->gb, 11);
467 act = get_bits1(&row->gb);
470 static int act_warned;
473 av_log(ctx->avctx, AV_LOG_ERROR,
474 "ACT flag set, in violation of frame header.\n");
476 } else if (row->format == -1) {
478 } else if (row->format != act) {
479 row->format = 2; // Variable
483 if (qscale != row->last_qscale) {
484 for (i = 0; i < 64; i++) {
485 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
486 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
488 row->last_qscale = qscale;
491 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
492 if (ctx->decode_dct_block(ctx, row, i) < 0)
493 return AVERROR_INVALIDDATA;
496 if (frame->interlaced_frame) {
497 dct_linesize_luma <<= 1;
498 dct_linesize_chroma <<= 1;
501 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
502 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
503 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
505 if (frame->interlaced_frame && ctx->cur_field) {
506 dest_y += frame->linesize[0];
507 dest_u += frame->linesize[1];
508 dest_v += frame->linesize[2];
511 dct_linesize_luma <<= 1;
512 dct_linesize_chroma <<= 1;
515 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
516 dct_x_offset = 8 << shift1;
518 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
519 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
520 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
521 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
523 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
524 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
525 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
526 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
527 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
528 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
531 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
532 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
533 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
534 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
536 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
537 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
538 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
539 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
540 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
541 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
542 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
543 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
544 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
545 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
552 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
553 int rownb, int threadnb)
555 const DNXHDContext *ctx = avctx->priv_data;
556 uint32_t offset = ctx->mb_scan_index[rownb];
557 RowContext *row = ctx->rows + threadnb;
562 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
563 init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
564 for (x = 0; x < ctx->mb_width; x++) {
566 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
571 //STOP_TIMER("decode macroblock");
577 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
578 int *got_frame, AVPacket *avpkt)
580 const uint8_t *buf = avpkt->data;
581 int buf_size = avpkt->size;
582 DNXHDContext *ctx = avctx->priv_data;
583 ThreadFrame frame = { .f = data };
584 AVFrame *picture = data;
588 ff_dlog(avctx, "frame size %d\n", buf_size);
590 for (i = 0; i < avctx->thread_count; i++)
591 ctx->rows[i].format = -1;
594 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
597 if ((avctx->width || avctx->height) &&
598 (ctx->width != avctx->width || ctx->height != avctx->height)) {
599 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %dx%d\n",
600 avctx->width, avctx->height, ctx->width, ctx->height);
603 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
604 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
605 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
609 avctx->pix_fmt = ctx->pix_fmt;
610 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
615 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
617 picture->pict_type = AV_PICTURE_TYPE_I;
618 picture->key_frame = 1;
621 ctx->buf_size = buf_size - ctx->data_offset;
622 ctx->buf = buf + ctx->data_offset;
623 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
625 if (first_field && picture->interlaced_frame) {
626 buf += ctx->cid_table->coding_unit_size;
627 buf_size -= ctx->cid_table->coding_unit_size;
629 goto decode_coding_unit;
633 for (i = 0; i < avctx->thread_count; i++) {
634 ret += ctx->rows[i].errors;
635 ctx->rows[i].errors = 0;
639 static int act_warned;
640 int format = ctx->rows[0].format;
641 for (i = 1; i < avctx->thread_count; i++) {
642 if (ctx->rows[i].format != format &&
643 ctx->rows[i].format != -1 /* not run */) {
653 av_log(ctx->avctx, AV_LOG_ERROR,
654 "Unsupported: variable ACT flag.\n");
658 ctx->pix_fmt = ctx->bit_depth==10
659 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
662 ctx->pix_fmt = ctx->bit_depth==10
663 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
667 avctx->pix_fmt = ctx->pix_fmt;
669 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
670 return AVERROR_INVALIDDATA;
677 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
679 DNXHDContext *ctx = avctx->priv_data;
681 ff_free_vlc(&ctx->ac_vlc);
682 ff_free_vlc(&ctx->dc_vlc);
683 ff_free_vlc(&ctx->run_vlc);
685 av_freep(&ctx->mb_scan_index);
686 av_freep(&ctx->rows);
691 AVCodec ff_dnxhd_decoder = {
693 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
694 .type = AVMEDIA_TYPE_VIDEO,
695 .id = AV_CODEC_ID_DNXHD,
696 .priv_data_size = sizeof(DNXHDContext),
697 .init = dnxhd_decode_init,
698 .close = dnxhd_decode_close,
699 .decode = dnxhd_decode_frame,
700 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
701 AV_CODEC_CAP_SLICE_THREADS,
702 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),