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 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 %"PRIu32"\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 %"PRIu32".\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;
149 // make sure VLC tables will be loaded when cid is parsed
152 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
154 return AVERROR(ENOMEM);
159 static int dnxhd_get_profile(int cid)
163 return FF_PROFILE_DNXHR_444;
165 return FF_PROFILE_DNXHR_HQX;
167 return FF_PROFILE_DNXHR_HQ;
169 return FF_PROFILE_DNXHR_SQ;
171 return FF_PROFILE_DNXHR_LB;
173 return FF_PROFILE_DNXHD;
176 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
177 const uint8_t *buf, int buf_size,
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;
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;
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);
205 ctx->mbaff = (buf[0x6] >> 5) & 1;
207 ctx->height = AV_RB16(buf + 0x18);
208 ctx->width = AV_RB16(buf + 0x1a);
210 switch(buf[0x21] >> 5) {
211 case 1: bitdepth = 8; break;
212 case 2: bitdepth = 10; break;
213 case 3: bitdepth = 12; break;
215 av_log(ctx->avctx, AV_LOG_ERROR,
216 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
217 return AVERROR_INVALIDDATA;
220 cid = AV_RB32(buf + 0x28);
222 ctx->avctx->profile = dnxhd_get_profile(cid);
224 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
226 if (ctx->mbaff && ctx->cid_table->cid != 1260)
227 av_log(ctx->avctx, AV_LOG_WARNING,
228 "Adaptive MB interlace flag in an unsupported profile.\n");
230 ctx->act = buf[0x2C] & 7;
231 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
232 av_log(ctx->avctx, AV_LOG_WARNING,
233 "Adaptive color transform in an unsupported profile.\n");
235 ctx->is_444 = (buf[0x2C] >> 6) & 1;
238 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
239 return AVERROR_INVALIDDATA;
240 } else if (bitdepth == 10) {
241 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
242 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
245 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
246 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
249 } else if (bitdepth == 12) {
250 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
251 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
252 } else if (bitdepth == 10) {
253 if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
254 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
256 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
257 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
259 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
260 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
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);
267 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
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) {
275 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
276 &ctx->avctx->sample_aspect_ratio.den,
277 ctx->width, ctx->cid_table->width, 255);
278 ctx->width = ctx->cid_table->width;
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;
287 ctx->mb_width = (ctx->width + 15)>> 4;
288 ctx->mb_height = AV_RB16(buf + 0x16c);
290 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
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);
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);
301 if (ctx->mb_height > 68) {
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;
308 if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
309 av_log(ctx->avctx, AV_LOG_ERROR,
310 "mb height too big: %d\n", ctx->mb_height);
311 return AVERROR_INVALIDDATA;
314 if (buf_size < ctx->data_offset) {
315 av_log(ctx->avctx, AV_LOG_ERROR,
316 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
317 return AVERROR_INVALIDDATA;
320 if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
321 av_log(ctx->avctx, AV_LOG_ERROR,
322 "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
323 return AVERROR_INVALIDDATA;
326 for (i = 0; i < ctx->mb_height; i++) {
327 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
328 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
329 i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
330 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
331 av_log(ctx->avctx, AV_LOG_ERROR,
332 "invalid mb scan index (%"PRIu32" vs %u).\n",
333 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
334 return AVERROR_INVALIDDATA;
341 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
349 int i, j, index1, index2, len, flags;
350 int level, component, sign;
352 const uint8_t *weight_matrix;
353 const uint8_t *ac_info = ctx->cid_table->ac_info;
354 int16_t *block = row->blocks[n];
355 const int eob_index = ctx->cid_table->eob_index;
357 OPEN_READER(bs, &row->gb);
359 ctx->bdsp.clear_block(block);
363 component = 1 + (n & 1);
364 scale = row->chroma_scale;
365 weight_matrix = ctx->cid_table->chroma_weight;
368 scale = row->luma_scale;
369 weight_matrix = ctx->cid_table->luma_weight;
372 component = (n >> 1) % 3;
374 scale = row->chroma_scale;
375 weight_matrix = ctx->cid_table->chroma_weight;
377 scale = row->luma_scale;
378 weight_matrix = ctx->cid_table->luma_weight;
382 UPDATE_CACHE(bs, &row->gb);
383 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
385 level = GET_CACHE(bs, &row->gb);
386 LAST_SKIP_BITS(bs, &row->gb, len);
388 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
389 row->last_dc[component] += level * (1 << dc_shift);
391 block[0] = row->last_dc[component];
395 UPDATE_CACHE(bs, &row->gb);
396 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
399 while (index1 != eob_index) {
400 level = ac_info[2*index1+0];
401 flags = ac_info[2*index1+1];
403 sign = SHOW_SBITS(bs, &row->gb, 1);
404 SKIP_BITS(bs, &row->gb, 1);
407 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
408 SKIP_BITS(bs, &row->gb, index_bits);
412 UPDATE_CACHE(bs, &row->gb);
413 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
415 i += ctx->cid_table->run[index2];
419 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
424 j = ctx->scantable.permutated[i];
426 level += scale[i] >> 1;
427 if (level_bias < 32 || weight_matrix[i] != level_bias)
428 level += level_bias; // 1<<(level_shift-1)
429 level >>= level_shift;
431 block[j] = (level ^ sign) - sign;
433 UPDATE_CACHE(bs, &row->gb);
434 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
438 CLOSE_READER(bs, &row->gb);
442 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
443 RowContext *row, int n)
445 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
448 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
449 RowContext *row, int n)
451 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
454 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
455 RowContext *row, int n)
457 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
460 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
461 RowContext *row, int n)
463 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
466 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
467 RowContext *row, int n)
469 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
472 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
473 AVFrame *frame, int x, int y)
475 int shift1 = ctx->bit_depth >= 10;
476 int dct_linesize_luma = frame->linesize[0];
477 int dct_linesize_chroma = frame->linesize[1];
478 uint8_t *dest_y, *dest_u, *dest_v;
479 int dct_y_offset, dct_x_offset;
481 int interlaced_mb = 0;
484 interlaced_mb = get_bits1(&row->gb);
485 qscale = get_bits(&row->gb, 10);
487 qscale = get_bits(&row->gb, 11);
489 act = get_bits1(&row->gb);
492 static int act_warned;
495 av_log(ctx->avctx, AV_LOG_ERROR,
496 "ACT flag set, in violation of frame header.\n");
498 } else if (row->format == -1) {
500 } else if (row->format != act) {
501 row->format = 2; // Variable
505 if (qscale != row->last_qscale) {
506 for (i = 0; i < 64; i++) {
507 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
508 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
510 row->last_qscale = qscale;
513 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
514 if (ctx->decode_dct_block(ctx, row, i) < 0)
515 return AVERROR_INVALIDDATA;
518 if (frame->interlaced_frame) {
519 dct_linesize_luma <<= 1;
520 dct_linesize_chroma <<= 1;
523 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
524 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
525 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
527 if (frame->interlaced_frame && ctx->cur_field) {
528 dest_y += frame->linesize[0];
529 dest_u += frame->linesize[1];
530 dest_v += frame->linesize[2];
533 dct_linesize_luma <<= 1;
534 dct_linesize_chroma <<= 1;
537 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
538 dct_x_offset = 8 << shift1;
540 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
541 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
542 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
543 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
545 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
546 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
547 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
548 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
549 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
550 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
553 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
554 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
555 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
556 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
558 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
559 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
560 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
561 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
562 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
563 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
564 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
565 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
566 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
567 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
574 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
575 int rownb, int threadnb)
577 const DNXHDContext *ctx = avctx->priv_data;
578 uint32_t offset = ctx->mb_scan_index[rownb];
579 RowContext *row = ctx->rows + threadnb;
584 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
585 init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
586 for (x = 0; x < ctx->mb_width; x++) {
588 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
593 //STOP_TIMER("decode macroblock");
599 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
600 int *got_frame, AVPacket *avpkt)
602 const uint8_t *buf = avpkt->data;
603 int buf_size = avpkt->size;
604 DNXHDContext *ctx = avctx->priv_data;
605 ThreadFrame frame = { .f = data };
606 AVFrame *picture = data;
610 ff_dlog(avctx, "frame size %d\n", buf_size);
612 for (i = 0; i < avctx->thread_count; i++)
613 ctx->rows[i].format = -1;
616 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
619 if ((avctx->width || avctx->height) &&
620 (ctx->width != avctx->width || ctx->height != avctx->height)) {
621 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
622 avctx->width, avctx->height, ctx->width, ctx->height);
625 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
626 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
627 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
631 avctx->pix_fmt = ctx->pix_fmt;
632 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
637 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
639 picture->pict_type = AV_PICTURE_TYPE_I;
640 picture->key_frame = 1;
643 ctx->buf_size = buf_size - ctx->data_offset;
644 ctx->buf = buf + ctx->data_offset;
645 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
647 if (first_field && picture->interlaced_frame) {
648 buf += ctx->cid_table->coding_unit_size;
649 buf_size -= ctx->cid_table->coding_unit_size;
651 goto decode_coding_unit;
655 for (i = 0; i < avctx->thread_count; i++) {
656 ret += ctx->rows[i].errors;
657 ctx->rows[i].errors = 0;
661 static int act_warned;
662 int format = ctx->rows[0].format;
663 for (i = 1; i < avctx->thread_count; i++) {
664 if (ctx->rows[i].format != format &&
665 ctx->rows[i].format != -1 /* not run */) {
675 av_log(ctx->avctx, AV_LOG_ERROR,
676 "Unsupported: variable ACT flag.\n");
680 ctx->pix_fmt = ctx->bit_depth==10
681 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
684 ctx->pix_fmt = ctx->bit_depth==10
685 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
689 avctx->pix_fmt = ctx->pix_fmt;
691 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
692 return AVERROR_INVALIDDATA;
699 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
701 DNXHDContext *ctx = avctx->priv_data;
703 ff_free_vlc(&ctx->ac_vlc);
704 ff_free_vlc(&ctx->dc_vlc);
705 ff_free_vlc(&ctx->run_vlc);
707 av_freep(&ctx->rows);
712 AVCodec ff_dnxhd_decoder = {
714 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
715 .type = AVMEDIA_TYPE_VIDEO,
716 .id = AV_CODEC_ID_DNXHD,
717 .priv_data_size = sizeof(DNXHDContext),
718 .init = dnxhd_decode_init,
719 .close = dnxhd_decode_close,
720 .decode = dnxhd_decode_frame,
721 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
722 AV_CODEC_CAP_SLICE_THREADS,
723 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
724 .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),