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(32, 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.
74 int (*decode_dct_block)(const struct DNXHDContext *ctx,
75 RowContext *row, int n);
78 #define DNXHD_VLC_BITS 9
79 #define DNXHD_DC_VLC_BITS 7
81 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
82 RowContext *row, int n);
83 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
84 RowContext *row, int n);
85 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
86 RowContext *row, int n);
87 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
88 RowContext *row, int n);
89 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
90 RowContext *row, int n);
92 static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
94 DNXHDContext *ctx = avctx->priv_data;
98 if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
99 avctx->colorspace = AVCOL_SPC_BT709;
102 avctx->coded_width = FFALIGN(avctx->width, 16);
103 avctx->coded_height = FFALIGN(avctx->height, 16);
105 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
107 return AVERROR(ENOMEM);
112 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
114 if (cid != ctx->cid) {
117 if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
118 av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
119 return AVERROR(ENOSYS);
121 if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
122 ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
123 av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
124 return AVERROR_INVALIDDATA;
126 ctx->cid_table = &ff_dnxhd_cid_table[index];
127 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\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 > 8 ? 14 : 12,
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;
153 // make sure VLC tables will be loaded when cid is parsed
156 ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
158 return AVERROR(ENOMEM);
163 static int dnxhd_get_profile(int cid)
167 return FF_PROFILE_DNXHR_444;
169 return FF_PROFILE_DNXHR_HQX;
171 return FF_PROFILE_DNXHR_HQ;
173 return FF_PROFILE_DNXHR_SQ;
175 return FF_PROFILE_DNXHR_LB;
177 return FF_PROFILE_DNXHD;
180 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
181 const uint8_t *buf, int buf_size,
185 int old_bit_depth = ctx->bit_depth, bitdepth;
186 uint64_t header_prefix;
187 if (buf_size < 0x280) {
188 av_log(ctx->avctx, AV_LOG_ERROR,
189 "buffer too small (%d < 640).\n", buf_size);
190 return AVERROR_INVALIDDATA;
193 header_prefix = ff_dnxhd_parse_header_prefix(buf);
194 if (header_prefix == 0) {
195 av_log(ctx->avctx, AV_LOG_ERROR,
196 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
197 buf[0], buf[1], buf[2], buf[3], buf[4]);
198 return AVERROR_INVALIDDATA;
200 if (buf[5] & 2) { /* interlaced */
201 ctx->cur_field = buf[5] & 1;
202 frame->interlaced_frame = 1;
203 frame->top_field_first = first_field ^ ctx->cur_field;
204 av_log(ctx->avctx, AV_LOG_DEBUG,
205 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
209 ctx->mbaff = (buf[0x6] >> 5) & 1;
210 ctx->alpha = buf[0x7] & 1;
211 ctx->lla = (buf[0x7] >> 1) & 1;
213 avpriv_request_sample(ctx->avctx, "alpha");
215 ctx->height = AV_RB16(buf + 0x18);
216 ctx->width = AV_RB16(buf + 0x1a);
218 switch(buf[0x21] >> 5) {
219 case 1: bitdepth = 8; break;
220 case 2: bitdepth = 10; break;
221 case 3: bitdepth = 12; break;
223 av_log(ctx->avctx, AV_LOG_ERROR,
224 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
225 return AVERROR_INVALIDDATA;
228 cid = AV_RB32(buf + 0x28);
230 ctx->avctx->profile = dnxhd_get_profile(cid);
232 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
234 if (ctx->mbaff && ctx->cid_table->cid != 1260)
235 av_log(ctx->avctx, AV_LOG_WARNING,
236 "Adaptive MB interlace flag in an unsupported profile.\n");
238 switch ((buf[0x2C] >> 1) & 3) {
239 case 0: frame->colorspace = AVCOL_SPC_BT709; break;
240 case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
241 case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
242 case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
245 ctx->act = buf[0x2C] & 1;
246 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
247 av_log(ctx->avctx, AV_LOG_WARNING,
248 "Adaptive color transform in an unsupported profile.\n");
250 ctx->is_444 = (buf[0x2C] >> 6) & 1;
253 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
254 return AVERROR_INVALIDDATA;
255 } else if (bitdepth == 10) {
256 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
257 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
260 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
261 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
264 } else if (bitdepth == 12) {
265 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
266 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
267 } else if (bitdepth == 10) {
268 if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
269 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
271 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
272 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
274 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
275 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
278 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
279 if (ctx->bit_depth != old_bit_depth) {
280 ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
281 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
282 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
286 // make sure profile size constraints are respected
287 // DNx100 allows 1920->1440 and 1280->960 subsampling
288 if (ctx->width != ctx->cid_table->width &&
289 ctx->cid_table->width != DNXHD_VARIABLE) {
290 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
291 &ctx->avctx->sample_aspect_ratio.den,
292 ctx->width, ctx->cid_table->width, 255);
293 ctx->width = ctx->cid_table->width;
296 if (buf_size < ctx->cid_table->coding_unit_size) {
297 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
298 buf_size, ctx->cid_table->coding_unit_size);
299 return AVERROR_INVALIDDATA;
302 ctx->mb_width = (ctx->width + 15)>> 4;
303 ctx->mb_height = AV_RB16(buf + 0x16c);
305 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
308 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
309 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
310 ctx->bit_depth, ctx->mbaff, ctx->act);
312 // Newer format supports variable mb_scan_index sizes
313 if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
314 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
316 if (ctx->mb_height > 68) {
317 av_log(ctx->avctx, AV_LOG_ERROR,
318 "mb height too big: %d\n", ctx->mb_height);
319 return AVERROR_INVALIDDATA;
321 ctx->data_offset = 0x280;
323 if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
324 av_log(ctx->avctx, AV_LOG_ERROR,
325 "mb height too big: %d\n", ctx->mb_height);
326 return AVERROR_INVALIDDATA;
329 if (buf_size < ctx->data_offset) {
330 av_log(ctx->avctx, AV_LOG_ERROR,
331 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
332 return AVERROR_INVALIDDATA;
335 if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
336 av_log(ctx->avctx, AV_LOG_ERROR,
337 "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
338 return AVERROR_INVALIDDATA;
341 for (i = 0; i < ctx->mb_height; i++) {
342 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
343 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
344 i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
345 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
346 av_log(ctx->avctx, AV_LOG_ERROR,
347 "invalid mb scan index (%"PRIu32" vs %u).\n",
348 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
349 return AVERROR_INVALIDDATA;
356 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
364 int i, j, index1, index2, len, flags;
365 int level, component, sign;
367 const uint8_t *weight_matrix;
368 const uint8_t *ac_info = ctx->cid_table->ac_info;
369 int16_t *block = row->blocks[n];
370 const int eob_index = ctx->cid_table->eob_index;
372 OPEN_READER(bs, &row->gb);
374 ctx->bdsp.clear_block(block);
378 component = 1 + (n & 1);
379 scale = row->chroma_scale;
380 weight_matrix = ctx->cid_table->chroma_weight;
383 scale = row->luma_scale;
384 weight_matrix = ctx->cid_table->luma_weight;
387 component = (n >> 1) % 3;
389 scale = row->chroma_scale;
390 weight_matrix = ctx->cid_table->chroma_weight;
392 scale = row->luma_scale;
393 weight_matrix = ctx->cid_table->luma_weight;
397 UPDATE_CACHE(bs, &row->gb);
398 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
404 level = GET_CACHE(bs, &row->gb);
405 LAST_SKIP_BITS(bs, &row->gb, len);
407 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
408 row->last_dc[component] += level * (1 << dc_shift);
410 block[0] = row->last_dc[component];
414 UPDATE_CACHE(bs, &row->gb);
415 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
418 while (index1 != eob_index) {
419 level = ac_info[2*index1+0];
420 flags = ac_info[2*index1+1];
422 sign = SHOW_SBITS(bs, &row->gb, 1);
423 SKIP_BITS(bs, &row->gb, 1);
426 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
427 SKIP_BITS(bs, &row->gb, index_bits);
431 UPDATE_CACHE(bs, &row->gb);
432 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
434 i += ctx->cid_table->run[index2];
438 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
443 j = ctx->scantable.permutated[i];
445 level += scale[i] >> 1;
446 if (level_bias < 32 || weight_matrix[i] != level_bias)
447 level += level_bias; // 1<<(level_shift-1)
448 level >>= level_shift;
450 block[j] = (level ^ sign) - sign;
452 UPDATE_CACHE(bs, &row->gb);
453 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
457 CLOSE_READER(bs, &row->gb);
461 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
462 RowContext *row, int n)
464 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
467 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
468 RowContext *row, int n)
470 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
473 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
474 RowContext *row, int n)
476 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
479 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
480 RowContext *row, int n)
482 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
485 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
486 RowContext *row, int n)
488 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
491 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
492 AVFrame *frame, int x, int y)
494 int shift1 = ctx->bit_depth >= 10;
495 int dct_linesize_luma = frame->linesize[0];
496 int dct_linesize_chroma = frame->linesize[1];
497 uint8_t *dest_y, *dest_u, *dest_v;
498 int dct_y_offset, dct_x_offset;
500 int interlaced_mb = 0;
503 interlaced_mb = get_bits1(&row->gb);
504 qscale = get_bits(&row->gb, 10);
506 qscale = get_bits(&row->gb, 11);
508 act = get_bits1(&row->gb);
511 static int act_warned;
514 av_log(ctx->avctx, AV_LOG_ERROR,
515 "ACT flag set, in violation of frame header.\n");
517 } else if (row->format == -1) {
519 } else if (row->format != act) {
520 row->format = 2; // Variable
524 if (qscale != row->last_qscale) {
525 for (i = 0; i < 64; i++) {
526 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
527 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
529 row->last_qscale = qscale;
532 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
533 if (ctx->decode_dct_block(ctx, row, i) < 0)
534 return AVERROR_INVALIDDATA;
537 if (frame->interlaced_frame) {
538 dct_linesize_luma <<= 1;
539 dct_linesize_chroma <<= 1;
542 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
543 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
544 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
546 if (frame->interlaced_frame && ctx->cur_field) {
547 dest_y += frame->linesize[0];
548 dest_u += frame->linesize[1];
549 dest_v += frame->linesize[2];
552 dct_linesize_luma <<= 1;
553 dct_linesize_chroma <<= 1;
556 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
557 dct_x_offset = 8 << shift1;
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[4]);
562 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
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_v, dct_linesize_chroma, row->blocks[3]);
568 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
569 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
572 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
573 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
574 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
575 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
577 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
578 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
579 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
580 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
581 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
582 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
583 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
584 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
585 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
586 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
593 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
594 int rownb, int threadnb)
596 const DNXHDContext *ctx = avctx->priv_data;
597 uint32_t offset = ctx->mb_scan_index[rownb];
598 RowContext *row = ctx->rows + threadnb;
603 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
604 ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
609 for (x = 0; x < ctx->mb_width; x++) {
611 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
616 //STOP_TIMER("decode macroblock");
622 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
623 int *got_frame, AVPacket *avpkt)
625 const uint8_t *buf = avpkt->data;
626 int buf_size = avpkt->size;
627 DNXHDContext *ctx = avctx->priv_data;
628 ThreadFrame frame = { .f = data };
629 AVFrame *picture = data;
633 ff_dlog(avctx, "frame size %d\n", buf_size);
635 for (i = 0; i < avctx->thread_count; i++)
636 ctx->rows[i].format = -1;
639 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
642 if ((avctx->width || avctx->height) &&
643 (ctx->width != avctx->width || ctx->height != avctx->height)) {
644 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
645 avctx->width, avctx->height, ctx->width, ctx->height);
648 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
649 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
650 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
654 avctx->pix_fmt = ctx->pix_fmt;
655 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
660 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
662 picture->pict_type = AV_PICTURE_TYPE_I;
663 picture->key_frame = 1;
666 ctx->buf_size = buf_size - ctx->data_offset;
667 ctx->buf = buf + ctx->data_offset;
668 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
670 if (first_field && picture->interlaced_frame) {
671 buf += ctx->cid_table->coding_unit_size;
672 buf_size -= ctx->cid_table->coding_unit_size;
674 goto decode_coding_unit;
678 for (i = 0; i < avctx->thread_count; i++) {
679 ret += ctx->rows[i].errors;
680 ctx->rows[i].errors = 0;
684 static int act_warned;
685 int format = ctx->rows[0].format;
686 for (i = 1; i < avctx->thread_count; i++) {
687 if (ctx->rows[i].format != format &&
688 ctx->rows[i].format != -1 /* not run */) {
698 av_log(ctx->avctx, AV_LOG_ERROR,
699 "Unsupported: variable ACT flag.\n");
703 ctx->pix_fmt = ctx->bit_depth==10
704 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
707 ctx->pix_fmt = ctx->bit_depth==10
708 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
712 avctx->pix_fmt = ctx->pix_fmt;
714 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
715 return AVERROR_INVALIDDATA;
722 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
724 DNXHDContext *ctx = avctx->priv_data;
726 ff_free_vlc(&ctx->ac_vlc);
727 ff_free_vlc(&ctx->dc_vlc);
728 ff_free_vlc(&ctx->run_vlc);
730 av_freep(&ctx->rows);
735 AVCodec ff_dnxhd_decoder = {
737 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
738 .type = AVMEDIA_TYPE_VIDEO,
739 .id = AV_CODEC_ID_DNXHD,
740 .priv_data_size = sizeof(DNXHDContext),
741 .init = dnxhd_decode_init,
742 .close = dnxhd_decode_close,
743 .decode = dnxhd_decode_frame,
744 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
745 AV_CODEC_CAP_SLICE_THREADS,
746 .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
747 .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),