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[256];
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;
122 avpriv_request_sample(ctx->avctx, "DNXHR 12-bit");
123 if (ctx->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)
124 return AVERROR_PATCHWELCOME;
126 ctx->cid_table = &ff_dnxhd_cid_table[index];
127 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);
129 ff_free_vlc(&ctx->ac_vlc);
130 ff_free_vlc(&ctx->dc_vlc);
131 ff_free_vlc(&ctx->run_vlc);
133 init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
134 ctx->cid_table->ac_bits, 1, 1,
135 ctx->cid_table->ac_codes, 2, 2, 0);
136 init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth + 4,
137 ctx->cid_table->dc_bits, 1, 1,
138 ctx->cid_table->dc_codes, 1, 1, 0);
139 init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
140 ctx->cid_table->run_bits, 1, 1,
141 ctx->cid_table->run_codes, 2, 2, 0);
148 static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
150 DNXHDContext *ctx = avctx->priv_data;
152 // make sure VLC tables will be loaded when cid is parsed
155 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
157 return AVERROR(ENOMEM);
162 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
163 const uint8_t *buf, int buf_size,
166 static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 };
167 static const uint8_t header_prefix444[] = { 0x00, 0x00, 0x02, 0x80, 0x02 };
168 static const uint8_t header_prefixhr1[] = { 0x00, 0x00, 0x02, 0x80, 0x03 };
169 static const uint8_t header_prefixhr2[] = { 0x00, 0x00, 0x03, 0x8C, 0x03 };
171 int old_bit_depth = ctx->bit_depth, bitdepth;
173 if (buf_size < 0x280) {
174 av_log(ctx->avctx, AV_LOG_ERROR,
175 "buffer too small (%d < 640).\n", buf_size);
176 return AVERROR_INVALIDDATA;
179 if (memcmp(buf, header_prefix, 5) && memcmp(buf, header_prefix444, 5) &&
180 memcmp(buf, header_prefixhr1, 5) && memcmp(buf, header_prefixhr2, 5)) {
181 av_log(ctx->avctx, AV_LOG_ERROR,
182 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
183 buf[0], buf[1], buf[2], buf[3], buf[4]);
184 return AVERROR_INVALIDDATA;
186 if (buf[5] & 2) { /* interlaced */
187 ctx->cur_field = buf[5] & 1;
188 frame->interlaced_frame = 1;
189 frame->top_field_first = first_field ^ ctx->cur_field;
190 av_log(ctx->avctx, AV_LOG_DEBUG,
191 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
195 ctx->mbaff = (buf[0x6] >> 5) & 1;
197 ctx->height = AV_RB16(buf + 0x18);
198 ctx->width = AV_RB16(buf + 0x1a);
200 switch(buf[0x21] >> 5) {
201 case 1: bitdepth = 8; break;
202 case 2: bitdepth = 10; break;
203 case 3: bitdepth = 12; break;
205 av_log(ctx->avctx, AV_LOG_ERROR,
206 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
207 return AVERROR_INVALIDDATA;
210 cid = AV_RB32(buf + 0x28);
211 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
213 if (ctx->mbaff && ctx->cid_table->cid != 1260)
214 av_log(ctx->avctx, AV_LOG_WARNING,
215 "Adaptive MB interlace flag in an unsupported profile.\n");
217 ctx->act = buf[0x2C] & 7;
218 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
219 av_log(ctx->avctx, AV_LOG_WARNING,
220 "Adaptive color transform in an unsupported profile.\n");
222 ctx->is_444 = (buf[0x2C] >> 6) & 1;
225 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits\n");
226 return AVERROR_INVALIDDATA;
227 } else if (bitdepth == 10) {
228 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
229 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
232 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
233 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
236 } else if (bitdepth == 12) {
237 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
238 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
239 } else if (bitdepth == 10) {
240 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
241 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
243 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
244 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
247 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
248 if (ctx->bit_depth != old_bit_depth) {
249 ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
250 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
251 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
255 // make sure profile size constraints are respected
256 // DNx100 allows 1920->1440 and 1280->960 subsampling
257 if (ctx->width != ctx->cid_table->width &&
258 ctx->cid_table->width != DNXHD_VARIABLE) {
259 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
260 &ctx->avctx->sample_aspect_ratio.den,
261 ctx->width, ctx->cid_table->width, 255);
262 ctx->width = ctx->cid_table->width;
265 if (buf_size < ctx->cid_table->coding_unit_size) {
266 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %d).\n",
267 buf_size, ctx->cid_table->coding_unit_size);
268 return AVERROR_INVALIDDATA;
271 ctx->mb_width = (ctx->width + 15)>> 4;
272 ctx->mb_height = buf[0x16d];
274 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
277 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
278 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
279 ctx->bit_depth, ctx->mbaff, ctx->act);
281 // Newer format supports variable mb_scan_index sizes
282 if (!memcmp(buf, header_prefixhr2, 5)) {
283 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
285 if (ctx->mb_height > 68 ||
286 (ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
287 av_log(ctx->avctx, AV_LOG_ERROR,
288 "mb height too big: %d\n", ctx->mb_height);
289 return AVERROR_INVALIDDATA;
291 ctx->data_offset = 0x280;
294 if (buf_size < ctx->data_offset) {
295 av_log(ctx->avctx, AV_LOG_ERROR,
296 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
297 return AVERROR_INVALIDDATA;
300 av_assert0((unsigned)ctx->mb_height <= FF_ARRAY_ELEMS(ctx->mb_scan_index));
302 for (i = 0; i < ctx->mb_height; i++) {
303 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
304 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %u\n", i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
305 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
306 av_log(ctx->avctx, AV_LOG_ERROR,
307 "invalid mb scan index (%u vs %u).\n",
308 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
309 return AVERROR_INVALIDDATA;
316 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
324 int i, j, index1, index2, len, flags;
325 int level, component, sign;
327 const uint8_t *weight_matrix;
328 const uint8_t *ac_info = ctx->cid_table->ac_info;
329 int16_t *block = row->blocks[n];
330 const int eob_index = ctx->cid_table->eob_index;
332 OPEN_READER(bs, &row->gb);
334 ctx->bdsp.clear_block(block);
338 component = 1 + (n & 1);
339 scale = row->chroma_scale;
340 weight_matrix = ctx->cid_table->chroma_weight;
343 scale = row->luma_scale;
344 weight_matrix = ctx->cid_table->luma_weight;
347 component = (n >> 1) % 3;
349 scale = row->chroma_scale;
350 weight_matrix = ctx->cid_table->chroma_weight;
352 scale = row->luma_scale;
353 weight_matrix = ctx->cid_table->luma_weight;
357 UPDATE_CACHE(bs, &row->gb);
358 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
360 level = GET_CACHE(bs, &row->gb);
361 LAST_SKIP_BITS(bs, &row->gb, len);
363 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
364 row->last_dc[component] += level * (1 << dc_shift);
366 block[0] = row->last_dc[component];
370 UPDATE_CACHE(bs, &row->gb);
371 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
374 while (index1 != eob_index) {
375 level = ac_info[2*index1+0];
376 flags = ac_info[2*index1+1];
378 sign = SHOW_SBITS(bs, &row->gb, 1);
379 SKIP_BITS(bs, &row->gb, 1);
382 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
383 SKIP_BITS(bs, &row->gb, index_bits);
387 UPDATE_CACHE(bs, &row->gb);
388 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
390 i += ctx->cid_table->run[index2];
394 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
399 j = ctx->scantable.permutated[i];
401 level += scale[i] >> 1;
402 if (level_bias < 32 || weight_matrix[i] != level_bias)
403 level += level_bias; // 1<<(level_shift-1)
404 level >>= level_shift;
406 block[j] = (level ^ sign) - sign;
408 UPDATE_CACHE(bs, &row->gb);
409 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
413 CLOSE_READER(bs, &row->gb);
417 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
418 RowContext *row, int n)
420 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
423 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
424 RowContext *row, int n)
426 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
429 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
430 RowContext *row, int n)
432 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
435 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
436 RowContext *row, int n)
438 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
441 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
442 RowContext *row, int n)
444 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
447 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
448 AVFrame *frame, int x, int y)
450 int shift1 = ctx->bit_depth >= 10;
451 int dct_linesize_luma = frame->linesize[0];
452 int dct_linesize_chroma = frame->linesize[1];
453 uint8_t *dest_y, *dest_u, *dest_v;
454 int dct_y_offset, dct_x_offset;
456 int interlaced_mb = 0;
459 interlaced_mb = get_bits1(&row->gb);
460 qscale = get_bits(&row->gb, 10);
462 qscale = get_bits(&row->gb, 11);
464 act = get_bits1(&row->gb);
467 static int act_warned;
470 av_log(ctx->avctx, AV_LOG_ERROR,
471 "ACT flag set, in violation of frame header.\n");
473 } else if (row->format == -1) {
475 } else if (row->format != act) {
476 row->format = 2; // Variable
480 if (qscale != row->last_qscale) {
481 for (i = 0; i < 64; i++) {
482 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
483 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
485 row->last_qscale = qscale;
488 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
489 if (ctx->decode_dct_block(ctx, row, i) < 0)
490 return AVERROR_INVALIDDATA;
493 if (frame->interlaced_frame) {
494 dct_linesize_luma <<= 1;
495 dct_linesize_chroma <<= 1;
498 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
499 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
500 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
502 if (frame->interlaced_frame && ctx->cur_field) {
503 dest_y += frame->linesize[0];
504 dest_u += frame->linesize[1];
505 dest_v += frame->linesize[2];
508 dct_linesize_luma <<= 1;
509 dct_linesize_chroma <<= 1;
512 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
513 dct_x_offset = 8 << shift1;
515 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
516 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
517 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
518 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
520 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
521 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
522 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
523 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
524 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
525 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
528 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
529 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
530 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
531 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
533 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
534 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
535 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
536 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
537 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
538 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
539 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
540 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
541 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
542 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
549 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
550 int rownb, int threadnb)
552 const DNXHDContext *ctx = avctx->priv_data;
553 uint32_t offset = ctx->mb_scan_index[rownb];
554 RowContext *row = ctx->rows + threadnb;
559 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
560 init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
561 for (x = 0; x < ctx->mb_width; x++) {
563 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
568 //STOP_TIMER("decode macroblock");
574 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
575 int *got_frame, AVPacket *avpkt)
577 const uint8_t *buf = avpkt->data;
578 int buf_size = avpkt->size;
579 DNXHDContext *ctx = avctx->priv_data;
580 ThreadFrame frame = { .f = data };
581 AVFrame *picture = data;
585 ff_dlog(avctx, "frame size %d\n", buf_size);
587 for (i = 0; i < avctx->thread_count; i++)
588 ctx->rows[i].format = -1;
591 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
594 if ((avctx->width || avctx->height) &&
595 (ctx->width != avctx->width || ctx->height != avctx->height)) {
596 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %dx%d\n",
597 avctx->width, avctx->height, ctx->width, ctx->height);
600 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
601 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
602 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
606 avctx->pix_fmt = ctx->pix_fmt;
607 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
612 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
614 picture->pict_type = AV_PICTURE_TYPE_I;
615 picture->key_frame = 1;
618 ctx->buf_size = buf_size - ctx->data_offset;
619 ctx->buf = buf + ctx->data_offset;
620 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
622 if (first_field && picture->interlaced_frame) {
623 buf += ctx->cid_table->coding_unit_size;
624 buf_size -= ctx->cid_table->coding_unit_size;
626 goto decode_coding_unit;
630 for (i = 0; i < avctx->thread_count; i++) {
631 ret += ctx->rows[i].errors;
632 ctx->rows[i].errors = 0;
636 static int act_warned;
637 int format = ctx->rows[0].format;
638 for (i = 1; i < avctx->thread_count; i++) {
639 if (ctx->rows[i].format != format &&
640 ctx->rows[i].format != -1 /* not run */) {
650 av_log(ctx->avctx, AV_LOG_ERROR,
651 "Unsupported: variable ACT flag.\n");
655 ctx->pix_fmt = ctx->bit_depth==10
656 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
659 ctx->pix_fmt = ctx->bit_depth==10
660 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
664 avctx->pix_fmt = ctx->pix_fmt;
666 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
667 return AVERROR_INVALIDDATA;
674 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
676 DNXHDContext *ctx = avctx->priv_data;
678 ff_free_vlc(&ctx->ac_vlc);
679 ff_free_vlc(&ctx->dc_vlc);
680 ff_free_vlc(&ctx->run_vlc);
682 av_freep(&ctx->rows);
687 AVCodec ff_dnxhd_decoder = {
689 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
690 .type = AVMEDIA_TYPE_VIDEO,
691 .id = AV_CODEC_ID_DNXHD,
692 .priv_data_size = sizeof(DNXHDContext),
693 .init = dnxhd_decode_init,
694 .close = dnxhd_decode_close,
695 .decode = dnxhd_decode_frame,
696 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
697 AV_CODEC_CAP_SLICE_THREADS,
698 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),