FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dnxhddec.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 315 397 79.3%
Branches: 162 227 71.4%

Line Branch Exec Source
1 /*
2 * VC3/DNxHD decoder.
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
6 *
7 * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
8 * Slice multithreading and MB interlaced support added by Christophe Gisquet
9 *
10 * This file is part of FFmpeg.
11 *
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.
16 *
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.
21 *
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
25 */
26
27 #include "libavutil/imgutils.h"
28 #include "libavutil/mem_internal.h"
29
30 #include "avcodec.h"
31 #include "blockdsp.h"
32 #define UNCHECKED_BITSTREAM_READER 1
33 #include "get_bits.h"
34 #include "dnxhddata.h"
35 #include "idctdsp.h"
36 #include "internal.h"
37 #include "profiles.h"
38 #include "thread.h"
39
40 typedef struct RowContext {
41 DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
42 int luma_scale[64];
43 int chroma_scale[64];
44 GetBitContext gb;
45 int last_dc[3];
46 int last_qscale;
47 int errors;
48 /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
49 int format;
50 } RowContext;
51
52 typedef struct DNXHDContext {
53 AVCodecContext *avctx;
54 RowContext *rows;
55 BlockDSPContext bdsp;
56 const uint8_t* buf;
57 int buf_size;
58 int64_t cid; ///< compression id
59 unsigned int width, height;
60 enum AVPixelFormat pix_fmt;
61 unsigned int mb_width, mb_height;
62 uint32_t mb_scan_index[512];
63 int data_offset; // End of mb_scan_index, where macroblocks start
64 int cur_field; ///< current interlaced field
65 VLC ac_vlc, dc_vlc, run_vlc;
66 IDCTDSPContext idsp;
67 ScanTable scantable;
68 const CIDEntry *cid_table;
69 int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
70 int is_444;
71 int alpha;
72 int lla;
73 int mbaff;
74 int act;
75 int (*decode_dct_block)(const struct DNXHDContext *ctx,
76 RowContext *row, int n);
77 } DNXHDContext;
78
79 #define DNXHD_VLC_BITS 9
80 #define DNXHD_DC_VLC_BITS 7
81
82 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
83 RowContext *row, int n);
84 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
85 RowContext *row, int n);
86 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
87 RowContext *row, int n);
88 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
89 RowContext *row, int n);
90 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
91 RowContext *row, int n);
92
93 149 static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
94 {
95 149 DNXHDContext *ctx = avctx->priv_data;
96
97 149 ctx->avctx = avctx;
98 149 ctx->cid = -1;
99
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149 if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
100 74 avctx->colorspace = AVCOL_SPC_BT709;
101 }
102
103 149 avctx->coded_width = FFALIGN(avctx->width, 16);
104 149 avctx->coded_height = FFALIGN(avctx->height, 16);
105
106 149 ctx->rows = av_calloc(avctx->thread_count, sizeof(*ctx->rows));
107
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149 if (!ctx->rows)
108 return AVERROR(ENOMEM);
109
110 149 return 0;
111 }
112
113 502 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
114 {
115 int ret;
116
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502 if (cid != ctx->cid) {
117 148 const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid);
118
119
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148 if (!cid_table) {
120 av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
121 return AVERROR(ENOSYS);
122 }
123
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148 if (cid_table->bit_depth != bitdepth &&
124
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4 cid_table->bit_depth != DNXHD_VARIABLE) {
125 av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n",
126 cid_table->bit_depth, bitdepth);
127 return AVERROR_INVALIDDATA;
128 }
129 148 ctx->cid_table = cid_table;
130 148 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
131
132 148 ff_free_vlc(&ctx->ac_vlc);
133 148 ff_free_vlc(&ctx->dc_vlc);
134 148 ff_free_vlc(&ctx->run_vlc);
135
136
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148 if ((ret = init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
137 ctx->cid_table->ac_bits, 1, 1,
138 ctx->cid_table->ac_codes, 2, 2, 0)) < 0)
139 goto out;
140
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148 if ((ret = init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
141 ctx->cid_table->dc_bits, 1, 1,
142 ctx->cid_table->dc_codes, 1, 1, 0)) < 0)
143 goto out;
144
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148 if ((ret = init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
145 ctx->cid_table->run_bits, 1, 1,
146 ctx->cid_table->run_codes, 2, 2, 0)) < 0)
147 goto out;
148
149 148 ctx->cid = cid;
150 }
151 502 ret = 0;
152 502 out:
153
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502 if (ret < 0)
154 av_log(ctx->avctx, AV_LOG_ERROR, "init_vlc failed\n");
155 502 return ret;
156 }
157
158 502 static int dnxhd_get_profile(int cid)
159 {
160
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502 switch(cid) {
161 2 case 1270:
162 2 return FF_PROFILE_DNXHR_444;
163 2 case 1271:
164 2 return FF_PROFILE_DNXHR_HQX;
165 120 case 1272:
166 120 return FF_PROFILE_DNXHR_HQ;
167 48 case 1273:
168 48 return FF_PROFILE_DNXHR_SQ;
169 111 case 1274:
170 111 return FF_PROFILE_DNXHR_LB;
171 }
172 219 return FF_PROFILE_DNXHD;
173 }
174
175 502 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
176 const uint8_t *buf, int buf_size,
177 int first_field)
178 {
179 int i, cid, ret;
180 502 int old_bit_depth = ctx->bit_depth, bitdepth;
181 uint64_t header_prefix;
182
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502 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;
186 }
187
188 502 header_prefix = ff_dnxhd_parse_header_prefix(buf);
189
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502 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;
194 }
195
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502 if (buf[5] & 2) { /* interlaced */
196
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134 ctx->cur_field = first_field ? buf[5] & 1 : !ctx->cur_field;
197 134 frame->interlaced_frame = 1;
198 134 frame->top_field_first = first_field ^ ctx->cur_field;
199 134 av_log(ctx->avctx, AV_LOG_DEBUG,
200 134 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
201 } else {
202 368 ctx->cur_field = 0;
203 }
204 502 ctx->mbaff = (buf[0x6] >> 5) & 1;
205 502 ctx->alpha = buf[0x7] & 1;
206 502 ctx->lla = (buf[0x7] >> 1) & 1;
207
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502 if (ctx->alpha)
208 avpriv_request_sample(ctx->avctx, "alpha");
209
210 502 ctx->height = AV_RB16(buf + 0x18);
211 502 ctx->width = AV_RB16(buf + 0x1a);
212
213
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502 switch(buf[0x21] >> 5) {
214 432 case 1: bitdepth = 8; break;
215 68 case 2: bitdepth = 10; break;
216 2 case 3: bitdepth = 12; break;
217 default:
218 av_log(ctx->avctx, AV_LOG_ERROR,
219 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
220 return AVERROR_INVALIDDATA;
221 }
222
223 502 cid = AV_RB32(buf + 0x28);
224
225 502 ctx->avctx->profile = dnxhd_get_profile(cid);
226
227
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502 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
228 return ret;
229
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502 if (ctx->mbaff && ctx->cid_table->cid != 1260)
230 av_log(ctx->avctx, AV_LOG_WARNING,
231 "Adaptive MB interlace flag in an unsupported profile.\n");
232
233
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502 switch ((buf[0x2C] >> 1) & 3) {
234 502 case 0: frame->colorspace = AVCOL_SPC_BT709; break;
235 case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
236 case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
237 case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
238 }
239
240 502 ctx->act = buf[0x2C] & 1;
241
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502 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
242 av_log(ctx->avctx, AV_LOG_WARNING,
243 "Adaptive color transform in an unsupported profile.\n");
244
245 502 ctx->is_444 = (buf[0x2C] >> 6) & 1;
246
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502 if (ctx->is_444) {
247
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2 if (bitdepth == 8) {
248 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
249 return AVERROR_INVALIDDATA;
250
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2 } else if (bitdepth == 10) {
251 2 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
252 2 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
253
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2 : AV_PIX_FMT_GBRP10;
254 } else {
255 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
256 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
257 : AV_PIX_FMT_GBRP12;
258 }
259
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500 } else if (bitdepth == 12) {
260 2 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
261 2 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
262
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498 } else if (bitdepth == 10) {
263
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66 if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
264 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
265 else
266 66 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
267 66 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
268 } else {
269 432 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
270 432 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
271 }
272
273 502 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
274
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502 if (ctx->bit_depth != old_bit_depth) {
275 148 ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
276 148 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
277 148 ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
278 ff_zigzag_direct);
279 }
280
281 // make sure profile size constraints are respected
282 // DNx100 allows 1920->1440 and 1280->960 subsampling
283
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502 if (ctx->width != ctx->cid_table->width &&
284
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285 ctx->cid_table->width != DNXHD_VARIABLE) {
285 2 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
286 2 &ctx->avctx->sample_aspect_ratio.den,
287 2 ctx->width, ctx->cid_table->width, 255);
288 2 ctx->width = ctx->cid_table->width;
289 }
290
291
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502 if (buf_size < ctx->cid_table->coding_unit_size) {
292 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
293 buf_size, ctx->cid_table->coding_unit_size);
294 return AVERROR_INVALIDDATA;
295 }
296
297 502 ctx->mb_width = (ctx->width + 15)>> 4;
298 502 ctx->mb_height = AV_RB16(buf + 0x16c);
299
300
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502 if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
301 134 ctx->height <<= 1;
302
303 502 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
304
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502 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
305 ctx->bit_depth, ctx->mbaff, ctx->act);
306
307 // Newer format supports variable mb_scan_index sizes
308
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502 if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
309 108 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
310 } else {
311
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394 if (ctx->mb_height > 68) {
312 av_log(ctx->avctx, AV_LOG_ERROR,
313 "mb height too big: %d\n", ctx->mb_height);
314 return AVERROR_INVALIDDATA;
315 }
316 394 ctx->data_offset = 0x280;
317 }
318
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502 if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
319 av_log(ctx->avctx, AV_LOG_ERROR,
320 "mb height too big: %d\n", ctx->mb_height);
321 return AVERROR_INVALIDDATA;
322 }
323
324
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502 if (buf_size < ctx->data_offset) {
325 av_log(ctx->avctx, AV_LOG_ERROR,
326 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
327 return AVERROR_INVALIDDATA;
328 }
329
330
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502 if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
331 av_log(ctx->avctx, AV_LOG_ERROR,
332 "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
333 return AVERROR_INVALIDDATA;
334 }
335
336
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30675 for (i = 0; i < ctx->mb_height; i++) {
337 30173 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
338 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
339 i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
340
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30173 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
341 av_log(ctx->avctx, AV_LOG_ERROR,
342 "invalid mb scan index (%"PRIu32" vs %u).\n",
343 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
344 return AVERROR_INVALIDDATA;
345 }
346 }
347
348 502 return 0;
349 }
350
351 34743936 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
352 RowContext *row,
353 int n,
354 int index_bits,
355 int level_bias,
356 int level_shift,
357 int dc_shift)
358 {
359 int i, j, index1, index2, len, flags;
360 int level, component, sign;
361 const int *scale;
362 const uint8_t *weight_matrix;
363 34743936 const uint8_t *ac_info = ctx->cid_table->ac_info;
364 34743936 int16_t *block = row->blocks[n];
365 34743936 const int eob_index = ctx->cid_table->eob_index;
366 34743936 int ret = 0;
367 34743936 OPEN_READER(bs, &row->gb);
368
369 34743936 ctx->bdsp.clear_block(block);
370
371
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34743936 if (!ctx->is_444) {
372
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34591296 if (n & 2) {
373 17295648 component = 1 + (n & 1);
374 17295648 scale = row->chroma_scale;
375 17295648 weight_matrix = ctx->cid_table->chroma_weight;
376 } else {
377 17295648 component = 0;
378 17295648 scale = row->luma_scale;
379 17295648 weight_matrix = ctx->cid_table->luma_weight;
380 }
381 } else {
382 152640 component = (n >> 1) % 3;
383
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152640 if (component) {
384 101760 scale = row->chroma_scale;
385 101760 weight_matrix = ctx->cid_table->chroma_weight;
386 } else {
387 50880 scale = row->luma_scale;
388 50880 weight_matrix = ctx->cid_table->luma_weight;
389 }
390 }
391
392 34743936 UPDATE_CACHE(bs, &row->gb);
393 34743936 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
394
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34743936 if (len < 0) {
395 ret = len;
396 goto error;
397 }
398
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34743936 if (len) {
399 32365764 level = GET_CACHE(bs, &row->gb);
400 32365764 LAST_SKIP_BITS(bs, &row->gb, len);
401 32365764 sign = ~level >> 31;
402 32365764 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
403 32365764 row->last_dc[component] += level * (1 << dc_shift);
404 }
405 34743936 block[0] = row->last_dc[component];
406
407 34743936 i = 0;
408
409 34743936 UPDATE_CACHE(bs, &row->gb);
410
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34743936 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
411 DNXHD_VLC_BITS, 2);
412
413
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176938926 while (index1 != eob_index) {
414 142194990 level = ac_info[2*index1+0];
415 142194990 flags = ac_info[2*index1+1];
416
417 142194990 sign = SHOW_SBITS(bs, &row->gb, 1);
418 142194990 SKIP_BITS(bs, &row->gb, 1);
419
420
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142194990 if (flags & 1) {
421 2609257 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
422 2609257 SKIP_BITS(bs, &row->gb, index_bits);
423 }
424
425
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142194990 if (flags & 2) {
426 46521250 UPDATE_CACHE(bs, &row->gb);
427
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46521250 GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
428 DNXHD_VLC_BITS, 2);
429 46521250 i += ctx->cid_table->run[index2];
430 }
431
432
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142194990 if (++i > 63) {
433 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
434 ret = -1;
435 break;
436 }
437
438 142194990 j = ctx->scantable.permutated[i];
439 142194990 level *= scale[i];
440 142194990 level += scale[i] >> 1;
441
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142194990 if (level_bias < 32 || weight_matrix[i] != level_bias)
442 117255903 level += level_bias; // 1<<(level_shift-1)
443 142194990 level >>= level_shift;
444
445 142194990 block[j] = (level ^ sign) - sign;
446
447 142194990 UPDATE_CACHE(bs, &row->gb);
448
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142194990 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
449 DNXHD_VLC_BITS, 2);
450 }
451 34743936 error:
452 34743936 CLOSE_READER(bs, &row->gb);
453 34743936 return ret;
454 }
455
456 32375616 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
457 RowContext *row, int n)
458 {
459 32375616 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
460 }
461
462 2085120 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
463 RowContext *row, int n)
464 {
465 2085120 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
466 }
467
468 152640 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
469 RowContext *row, int n)
470 {
471 152640 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
472 }
473
474 130560 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
475 RowContext *row, int n)
476 {
477 130560 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
478 }
479
480 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
481 RowContext *row, int n)
482 {
483 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
484 }
485
486 4336632 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
487 AVFrame *frame, int x, int y)
488 {
489 4336632 int shift1 = ctx->bit_depth >= 10;
490 4336632 int dct_linesize_luma = frame->linesize[0];
491 4336632 int dct_linesize_chroma = frame->linesize[1];
492 uint8_t *dest_y, *dest_u, *dest_v;
493 int dct_y_offset, dct_x_offset;
494 int qscale, i, act;
495 4336632 int interlaced_mb = 0;
496
497
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4336632 if (ctx->mbaff) {
498 12240 interlaced_mb = get_bits1(&row->gb);
499 12240 qscale = get_bits(&row->gb, 10);
500 } else {
501 4324392 qscale = get_bits(&row->gb, 11);
502 }
503 4336632 act = get_bits1(&row->gb);
504
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4336632 if (act) {
505
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12720 if (!ctx->act) {
506 static int act_warned;
507 if (!act_warned) {
508 act_warned = 1;
509 av_log(ctx->avctx, AV_LOG_ERROR,
510 "ACT flag set, in violation of frame header.\n");
511 }
512
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12720 } else if (row->format == -1) {
513 2 row->format = act;
514
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12718 } else if (row->format != act) {
515 row->format = 2; // Variable
516 }
517 }
518
519
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4336632 if (qscale != row->last_qscale) {
520
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23037300 for (i = 0; i < 64; i++) {
521 22682880 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
522 22682880 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
523 }
524 354420 row->last_qscale = qscale;
525 }
526
527
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39080568 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
528
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34743936 if (ctx->decode_dct_block(ctx, row, i) < 0)
529 return AVERROR_INVALIDDATA;
530 }
531
532
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4336632 if (frame->interlaced_frame) {
533 546720 dct_linesize_luma <<= 1;
534 546720 dct_linesize_chroma <<= 1;
535 }
536
537 4336632 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
538 4336632 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
539 4336632 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
540
541
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4336632 if (frame->interlaced_frame && ctx->cur_field) {
542 273360 dest_y += frame->linesize[0];
543 273360 dest_u += frame->linesize[1];
544 273360 dest_v += frame->linesize[2];
545 }
546
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4336632 if (interlaced_mb) {
547 3224 dct_linesize_luma <<= 1;
548 3224 dct_linesize_chroma <<= 1;
549 }
550
551
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4336632 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
552 4336632 dct_x_offset = 8 << shift1;
553
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4336632 if (!ctx->is_444) {
554 4323912 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
555 4323912 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
556 4323912 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
557 4323912 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
558
559
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4323912 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
560
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4323912 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
561 4323912 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
562 4323912 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
563 4323912 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
564 4323912 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
565 }
566 } else {
567 12720 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
568 12720 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
569 12720 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
570 12720 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
571
572
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12720 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
573
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12720 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
574 12720 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
575 12720 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
576 12720 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
577 12720 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
578 12720 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
579 12720 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
580 12720 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
581 12720 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
582 }
583 }
584
585 4336632 return 0;
586 }
587
588 30173 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
589 int rownb, int threadnb)
590 {
591 30173 const DNXHDContext *ctx = avctx->priv_data;
592 30173 uint32_t offset = ctx->mb_scan_index[rownb];
593 30173 RowContext *row = ctx->rows + threadnb;
594 int x, ret;
595
596 30173 row->last_dc[0] =
597 30173 row->last_dc[1] =
598 30173 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
599 30173 ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
600
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30173 if (ret < 0) {
601 row->errors++;
602 return ret;
603 }
604
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4366805 for (x = 0; x < ctx->mb_width; x++) {
605 4336632 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
606
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4336632 if (ret < 0) {
607 row->errors++;
608 return ret;
609 }
610 }
611
612 30173 return 0;
613 }
614
615 435 static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
616 int *got_frame, AVPacket *avpkt)
617 {
618 435 const uint8_t *buf = avpkt->data;
619 435 int buf_size = avpkt->size;
620 435 DNXHDContext *ctx = avctx->priv_data;
621 435 ThreadFrame frame = { .f = data };
622 435 AVFrame *picture = data;
623 435 int first_field = 1;
624 int ret, i;
625
626 ff_dlog(avctx, "frame size %d\n", buf_size);
627
628
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870 for (i = 0; i < avctx->thread_count; i++)
629 435 ctx->rows[i].format = -1;
630
631 435 decode_coding_unit:
632
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502 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
633 return ret;
634
635
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502 if ((avctx->width || avctx->height) &&
636
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456 (ctx->width != avctx->width || ctx->height != avctx->height)) {
637 2 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
638 avctx->width, avctx->height, ctx->width, ctx->height);
639 2 first_field = 1;
640 }
641
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502 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
642 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
643 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
644 first_field = 1;
645 }
646
647 502 avctx->pix_fmt = ctx->pix_fmt;
648 502 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
649
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502 if (ret < 0)
650 return ret;
651
652
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502 if (first_field) {
653
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435 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
654 return ret;
655 435 picture->pict_type = AV_PICTURE_TYPE_I;
656 435 picture->key_frame = 1;
657 }
658
659 502 ctx->buf_size = buf_size - ctx->data_offset;
660 502 ctx->buf = buf + ctx->data_offset;
661 502 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
662
663
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502 if (first_field && picture->interlaced_frame) {
664 67 buf += ctx->cid_table->coding_unit_size;
665 67 buf_size -= ctx->cid_table->coding_unit_size;
666 67 first_field = 0;
667 67 goto decode_coding_unit;
668 }
669
670 435 ret = 0;
671
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870 for (i = 0; i < avctx->thread_count; i++) {
672 435 ret += ctx->rows[i].errors;
673 435 ctx->rows[i].errors = 0;
674 }
675
676
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435 if (ctx->act) {
677 static int act_warned;
678 2 int format = ctx->rows[0].format;
679
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2 for (i = 1; i < avctx->thread_count; i++) {
680 if (ctx->rows[i].format != format &&
681 ctx->rows[i].format != -1 /* not run */) {
682 format = 2;
683 break;
684 }
685 }
686
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2 switch (format) {
687 case -1:
688 case 2:
689 if (!act_warned) {
690 act_warned = 1;
691 av_log(ctx->avctx, AV_LOG_ERROR,
692 "Unsupported: variable ACT flag.\n");
693 }
694 break;
695 case 0:
696 ctx->pix_fmt = ctx->bit_depth==10
697 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
698 break;
699 2 case 1:
700 4 ctx->pix_fmt = ctx->bit_depth==10
701
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2 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
702 2 break;
703 }
704 }
705 435 avctx->pix_fmt = ctx->pix_fmt;
706
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435 if (ret) {
707 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
708 return AVERROR_INVALIDDATA;
709 }
710
711 435 *got_frame = 1;
712 435 return avpkt->size;
713 }
714
715 149 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
716 {
717 149 DNXHDContext *ctx = avctx->priv_data;
718
719 149 ff_free_vlc(&ctx->ac_vlc);
720 149 ff_free_vlc(&ctx->dc_vlc);
721 149 ff_free_vlc(&ctx->run_vlc);
722
723 149 av_freep(&ctx->rows);
724
725 149 return 0;
726 }
727
728 const AVCodec ff_dnxhd_decoder = {
729 .name = "dnxhd",
730 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
731 .type = AVMEDIA_TYPE_VIDEO,
732 .id = AV_CODEC_ID_DNXHD,
733 .priv_data_size = sizeof(DNXHDContext),
734 .init = dnxhd_decode_init,
735 .close = dnxhd_decode_close,
736 .decode = dnxhd_decode_frame,
737 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
738 AV_CODEC_CAP_SLICE_THREADS,
739 .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
740 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
741 };
742