FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dnxhddec.c
Date: 2024-02-29 09:57:37
Exec Total Coverage
Lines: 316 400 79.0%
Functions: 13 14 92.9%
Branches: 162 229 70.7%

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/mem_internal.h"
28 #include "libavutil/pixdesc.h"
29
30 #include "avcodec.h"
31 #include "blockdsp.h"
32 #include "codec_internal.h"
33 #include "decode.h"
34 #define UNCHECKED_BITSTREAM_READER 1
35 #include "get_bits.h"
36 #include "dnxhddata.h"
37 #include "idctdsp.h"
38 #include "profiles.h"
39 #include "thread.h"
40
41 typedef struct RowContext {
42 DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
43 int luma_scale[64];
44 int chroma_scale[64];
45 GetBitContext gb;
46 int last_dc[3];
47 int last_qscale;
48 int errors;
49 /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
50 int format;
51 } RowContext;
52
53 typedef struct DNXHDContext {
54 AVCodecContext *avctx;
55 RowContext *rows;
56 BlockDSPContext bdsp;
57 const uint8_t* buf;
58 int buf_size;
59 int64_t cid; ///< compression id
60 unsigned int width, height;
61 enum AVPixelFormat pix_fmt;
62 unsigned int mb_width, mb_height;
63 uint32_t mb_scan_index[512];
64 int data_offset; // End of mb_scan_index, where macroblocks start
65 int cur_field; ///< current interlaced field
66 VLC ac_vlc, dc_vlc, run_vlc;
67 IDCTDSPContext idsp;
68 uint8_t permutated_scantable[64];
69 const CIDEntry *cid_table;
70 int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
71 int is_444;
72 int alpha;
73 int lla;
74 int mbaff;
75 int act;
76 int (*decode_dct_block)(const struct DNXHDContext *ctx,
77 RowContext *row, int n);
78 } DNXHDContext;
79
80 #define DNXHD_VLC_BITS 9
81 #define DNXHD_DC_VLC_BITS 7
82
83 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
84 RowContext *row, int n);
85 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
86 RowContext *row, int n);
87 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
88 RowContext *row, int n);
89 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
90 RowContext *row, int n);
91 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
92 RowContext *row, int n);
93
94 149 static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
95 {
96 149 DNXHDContext *ctx = avctx->priv_data;
97
98 149 ctx->avctx = avctx;
99 149 ctx->cid = -1;
100
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149 if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
101 74 avctx->colorspace = AVCOL_SPC_BT709;
102 }
103
104 149 avctx->coded_width = FFALIGN(avctx->width, 16);
105 149 avctx->coded_height = FFALIGN(avctx->height, 16);
106
107 149 ctx->rows = av_calloc(avctx->thread_count, sizeof(*ctx->rows));
108
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149 if (!ctx->rows)
109 return AVERROR(ENOMEM);
110
111 149 return 0;
112 }
113
114 502 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
115 {
116 int ret;
117
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502 if (cid != ctx->cid) {
118 148 const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid);
119
120
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148 if (!cid_table) {
121 av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
122 return AVERROR(ENOSYS);
123 }
124
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148 if (cid_table->bit_depth != bitdepth &&
125
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4 cid_table->bit_depth != DNXHD_VARIABLE) {
126 av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n",
127 cid_table->bit_depth, bitdepth);
128 return AVERROR_INVALIDDATA;
129 }
130 148 ctx->cid_table = cid_table;
131 148 av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
132
133 148 ff_vlc_free(&ctx->ac_vlc);
134 148 ff_vlc_free(&ctx->dc_vlc);
135 148 ff_vlc_free(&ctx->run_vlc);
136
137
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148 if ((ret = vlc_init(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
138 ctx->cid_table->ac_bits, 1, 1,
139 ctx->cid_table->ac_codes, 2, 2, 0)) < 0)
140 goto out;
141
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148 if ((ret = vlc_init(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
142 ctx->cid_table->dc_bits, 1, 1,
143 ctx->cid_table->dc_codes, 1, 1, 0)) < 0)
144 goto out;
145
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148 if ((ret = ff_vlc_init_sparse(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
146 148 ctx->cid_table->run_bits, 1, 1,
147 148 ctx->cid_table->run_codes, 2, 2,
148 148 ctx->cid_table->run, 1, 1, 0)) < 0)
149 goto out;
150
151 148 ctx->cid = cid;
152 }
153 502 ret = 0;
154 502 out:
155
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502 if (ret < 0)
156 av_log(ctx->avctx, AV_LOG_ERROR, "vlc_init failed\n");
157 502 return ret;
158 }
159
160 502 static int dnxhd_get_profile(int cid)
161 {
162
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502 switch(cid) {
163 2 case 1270:
164 2 return AV_PROFILE_DNXHR_444;
165 2 case 1271:
166 2 return AV_PROFILE_DNXHR_HQX;
167 120 case 1272:
168 120 return AV_PROFILE_DNXHR_HQ;
169 48 case 1273:
170 48 return AV_PROFILE_DNXHR_SQ;
171 111 case 1274:
172 111 return AV_PROFILE_DNXHR_LB;
173 }
174 219 return AV_PROFILE_DNXHD;
175 }
176
177 502 static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
178 const uint8_t *buf, int buf_size,
179 int first_field)
180 {
181 int i, cid, ret;
182 502 int old_bit_depth = ctx->bit_depth, bitdepth;
183 uint64_t header_prefix;
184
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502 if (buf_size < 0x280) {
185 av_log(ctx->avctx, AV_LOG_ERROR,
186 "buffer too small (%d < 640).\n", buf_size);
187 return AVERROR_INVALIDDATA;
188 }
189
190 502 header_prefix = ff_dnxhd_parse_header_prefix(buf);
191
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502 if (header_prefix == 0) {
192 av_log(ctx->avctx, AV_LOG_ERROR,
193 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
194 buf[0], buf[1], buf[2], buf[3], buf[4]);
195 return AVERROR_INVALIDDATA;
196 }
197
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502 if (buf[5] & 2) { /* interlaced */
198
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134 ctx->cur_field = first_field ? buf[5] & 1 : !ctx->cur_field;
199 134 frame->flags |= AV_FRAME_FLAG_INTERLACED;
200
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134 if (first_field ^ ctx->cur_field)
201 134 frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
202 134 av_log(ctx->avctx, AV_LOG_DEBUG,
203 134 "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
204 } else {
205 368 ctx->cur_field = 0;
206 }
207 502 ctx->mbaff = (buf[0x6] >> 5) & 1;
208 502 ctx->alpha = buf[0x7] & 1;
209 502 ctx->lla = (buf[0x7] >> 1) & 1;
210
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502 if (ctx->alpha)
211 avpriv_request_sample(ctx->avctx, "alpha");
212
213 502 ctx->height = AV_RB16(buf + 0x18);
214 502 ctx->width = AV_RB16(buf + 0x1a);
215
216
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502 switch(buf[0x21] >> 5) {
217 432 case 1: bitdepth = 8; break;
218 68 case 2: bitdepth = 10; break;
219 2 case 3: bitdepth = 12; break;
220 default:
221 av_log(ctx->avctx, AV_LOG_ERROR,
222 "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
223 return AVERROR_INVALIDDATA;
224 }
225
226 502 cid = AV_RB32(buf + 0x28);
227
228 502 ctx->avctx->profile = dnxhd_get_profile(cid);
229
230
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502 if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
231 return ret;
232
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502 if (ctx->mbaff && ctx->cid_table->cid != 1260)
233 av_log(ctx->avctx, AV_LOG_WARNING,
234 "Adaptive MB interlace flag in an unsupported profile.\n");
235
236
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502 switch ((buf[0x2C] >> 1) & 3) {
237 502 case 0: frame->colorspace = AVCOL_SPC_BT709; break;
238 case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break;
239 case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break;
240 case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
241 }
242
243 502 ctx->act = buf[0x2C] & 1;
244
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502 if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
245 av_log(ctx->avctx, AV_LOG_WARNING,
246 "Adaptive color transform in an unsupported profile.\n");
247
248 502 ctx->is_444 = (buf[0x2C] >> 6) & 1;
249
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502 if (ctx->is_444) {
250
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2 if (bitdepth == 8) {
251 avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
252 return AVERROR_INVALIDDATA;
253
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2 } else if (bitdepth == 10) {
254 2 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
255 2 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
256
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2 : AV_PIX_FMT_GBRP10;
257 } else {
258 ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
259 ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
260 : AV_PIX_FMT_GBRP12;
261 }
262
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500 } else if (bitdepth == 12) {
263 2 ctx->decode_dct_block = dnxhd_decode_dct_block_12;
264 2 ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
265
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498 } else if (bitdepth == 10) {
266
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66 if (ctx->avctx->profile == AV_PROFILE_DNXHR_HQX)
267 ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
268 else
269 66 ctx->decode_dct_block = dnxhd_decode_dct_block_10;
270 66 ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
271 } else {
272 432 ctx->decode_dct_block = dnxhd_decode_dct_block_8;
273 432 ctx->pix_fmt = AV_PIX_FMT_YUV422P;
274 }
275
276 502 ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
277
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502 if (ctx->bit_depth != old_bit_depth) {
278 148 ff_blockdsp_init(&ctx->bdsp);
279 148 ff_idctdsp_init(&ctx->idsp, ctx->avctx);
280 148 ff_permute_scantable(ctx->permutated_scantable, ff_zigzag_direct,
281 148 ctx->idsp.idct_permutation);
282 }
283
284 // make sure profile size constraints are respected
285 // DNx100 allows 1920->1440 and 1280->960 subsampling
286
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502 if (ctx->width != ctx->cid_table->width &&
287
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285 ctx->cid_table->width != DNXHD_VARIABLE) {
288 2 av_reduce(&ctx->avctx->sample_aspect_ratio.num,
289 2 &ctx->avctx->sample_aspect_ratio.den,
290 2 ctx->width, ctx->cid_table->width, 255);
291 2 ctx->width = ctx->cid_table->width;
292 }
293
294
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502 if (buf_size < ctx->cid_table->coding_unit_size) {
295 av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
296 buf_size, ctx->cid_table->coding_unit_size);
297 return AVERROR_INVALIDDATA;
298 }
299
300 502 ctx->mb_width = (ctx->width + 15)>> 4;
301 502 ctx->mb_height = AV_RB16(buf + 0x16c);
302
303
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502 if ((ctx->height + 15) >> 4 == ctx->mb_height && (frame->flags & AV_FRAME_FLAG_INTERLACED))
304 134 ctx->height <<= 1;
305
306 502 av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
307
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502 ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
308 ctx->bit_depth, ctx->mbaff, ctx->act);
309
310 // Newer format supports variable mb_scan_index sizes
311
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502 if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
312 108 ctx->data_offset = 0x170 + (ctx->mb_height << 2);
313 } else {
314
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394 if (ctx->mb_height > 68) {
315 av_log(ctx->avctx, AV_LOG_ERROR,
316 "mb height too big: %d\n", ctx->mb_height);
317 return AVERROR_INVALIDDATA;
318 }
319 394 ctx->data_offset = 0x280;
320 }
321
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502 if ((ctx->mb_height << !!(frame->flags & AV_FRAME_FLAG_INTERLACED)) > (ctx->height + 15) >> 4) {
322 av_log(ctx->avctx, AV_LOG_ERROR,
323 "mb height too big: %d\n", ctx->mb_height);
324 return AVERROR_INVALIDDATA;
325 }
326
327
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502 if (buf_size < ctx->data_offset) {
328 av_log(ctx->avctx, AV_LOG_ERROR,
329 "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
330 return AVERROR_INVALIDDATA;
331 }
332
333
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502 if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
334 av_log(ctx->avctx, AV_LOG_ERROR,
335 "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
336 return AVERROR_INVALIDDATA;
337 }
338
339
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30675 for (i = 0; i < ctx->mb_height; i++) {
340 30173 ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
341 ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
342 i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
343
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30173 if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
344 av_log(ctx->avctx, AV_LOG_ERROR,
345 "invalid mb scan index (%"PRIu32" vs %u).\n",
346 ctx->mb_scan_index[i], buf_size - ctx->data_offset);
347 return AVERROR_INVALIDDATA;
348 }
349 }
350
351 502 return 0;
352 }
353
354 34743936 static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
355 RowContext *row,
356 int n,
357 int index_bits,
358 int level_bias,
359 int level_shift,
360 int dc_shift)
361 {
362 int i, j, index1, len, flags;
363 int level, component, sign;
364 const int *scale;
365 const uint8_t *weight_matrix;
366 34743936 const uint8_t *ac_info = ctx->cid_table->ac_info;
367 34743936 int16_t *block = row->blocks[n];
368 34743936 const int eob_index = ctx->cid_table->eob_index;
369 34743936 int ret = 0;
370 34743936 OPEN_READER(bs, &row->gb);
371
372 34743936 ctx->bdsp.clear_block(block);
373
374
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34743936 if (!ctx->is_444) {
375
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34591296 if (n & 2) {
376 17295648 component = 1 + (n & 1);
377 17295648 scale = row->chroma_scale;
378 17295648 weight_matrix = ctx->cid_table->chroma_weight;
379 } else {
380 17295648 component = 0;
381 17295648 scale = row->luma_scale;
382 17295648 weight_matrix = ctx->cid_table->luma_weight;
383 }
384 } else {
385 152640 component = (n >> 1) % 3;
386
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152640 if (component) {
387 101760 scale = row->chroma_scale;
388 101760 weight_matrix = ctx->cid_table->chroma_weight;
389 } else {
390 50880 scale = row->luma_scale;
391 50880 weight_matrix = ctx->cid_table->luma_weight;
392 }
393 }
394
395 34743936 UPDATE_CACHE(bs, &row->gb);
396 34743936 GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
397
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34743936 if (len < 0) {
398 ret = len;
399 goto error;
400 }
401
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34743936 if (len) {
402 32365764 level = GET_CACHE(bs, &row->gb);
403 32365764 LAST_SKIP_BITS(bs, &row->gb, len);
404 32365764 sign = ~level >> 31;
405 32365764 level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
406 32365764 row->last_dc[component] += level * (1 << dc_shift);
407 }
408 34743936 block[0] = row->last_dc[component];
409
410 34743936 i = 0;
411
412 34743936 UPDATE_CACHE(bs, &row->gb);
413
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34743936 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
414 DNXHD_VLC_BITS, 2);
415
416
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176938749 while (index1 != eob_index) {
417 142194813 level = ac_info[2*index1+0];
418 142194813 flags = ac_info[2*index1+1];
419
420 142194813 sign = SHOW_SBITS(bs, &row->gb, 1);
421 142194813 SKIP_BITS(bs, &row->gb, 1);
422
423
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142194813 if (flags & 1) {
424 2609257 level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
425 2609257 SKIP_BITS(bs, &row->gb, index_bits);
426 }
427
428
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142194813 if (flags & 2) {
429 int run;
430 46521239 UPDATE_CACHE(bs, &row->gb);
431
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46521239 GET_VLC(run, bs, &row->gb, ctx->run_vlc.table,
432 DNXHD_VLC_BITS, 2);
433 46521239 i += run;
434 }
435
436
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142194813 if (++i > 63) {
437 av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
438 ret = -1;
439 break;
440 }
441
442 142194813 j = ctx->permutated_scantable[i];
443 142194813 level *= scale[i];
444 142194813 level += scale[i] >> 1;
445
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142194813 if (level_bias < 32 || weight_matrix[i] != level_bias)
446 117255751 level += level_bias; // 1<<(level_shift-1)
447 142194813 level >>= level_shift;
448
449 142194813 block[j] = (level ^ sign) - sign;
450
451 142194813 UPDATE_CACHE(bs, &row->gb);
452
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142194813 GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
453 DNXHD_VLC_BITS, 2);
454 }
455 34743936 error:
456 34743936 CLOSE_READER(bs, &row->gb);
457 34743936 return ret;
458 }
459
460 32375616 static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
461 RowContext *row, int n)
462 {
463 32375616 return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
464 }
465
466 2085120 static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
467 RowContext *row, int n)
468 {
469 2085120 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
470 }
471
472 152640 static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
473 RowContext *row, int n)
474 {
475 152640 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
476 }
477
478 130560 static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
479 RowContext *row, int n)
480 {
481 130560 return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
482 }
483
484 static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
485 RowContext *row, int n)
486 {
487 return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
488 }
489
490 4336632 static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
491 AVFrame *frame, int x, int y)
492 {
493 4336632 int shift1 = ctx->bit_depth >= 10;
494 4336632 int dct_linesize_luma = frame->linesize[0];
495 4336632 int dct_linesize_chroma = frame->linesize[1];
496 uint8_t *dest_y, *dest_u, *dest_v;
497 int dct_y_offset, dct_x_offset;
498 int qscale, i, act;
499 4336632 int interlaced_mb = 0;
500
501
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4336632 if (ctx->mbaff) {
502 12240 interlaced_mb = get_bits1(&row->gb);
503 12240 qscale = get_bits(&row->gb, 10);
504 } else {
505 4324392 qscale = get_bits(&row->gb, 11);
506 }
507 4336632 act = get_bits1(&row->gb);
508
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4336632 if (act) {
509
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12720 if (!ctx->act) {
510 static int act_warned;
511 if (!act_warned) {
512 act_warned = 1;
513 av_log(ctx->avctx, AV_LOG_ERROR,
514 "ACT flag set, in violation of frame header.\n");
515 }
516
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12720 } else if (row->format == -1) {
517 2 row->format = act;
518
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12718 } else if (row->format != act) {
519 row->format = 2; // Variable
520 }
521 }
522
523
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4336632 if (qscale != row->last_qscale) {
524
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23058555 for (i = 0; i < 64; i++) {
525 22703808 row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
526 22703808 row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
527 }
528 354747 row->last_qscale = qscale;
529 }
530
531
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39080568 for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
532
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34743936 if (ctx->decode_dct_block(ctx, row, i) < 0)
533 return AVERROR_INVALIDDATA;
534 }
535
536
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4336632 if (frame->flags & AV_FRAME_FLAG_INTERLACED) {
537 546720 dct_linesize_luma <<= 1;
538 546720 dct_linesize_chroma <<= 1;
539 }
540
541 4336632 dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
542 4336632 dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
543 4336632 dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
544
545
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4336632 if ((frame->flags & AV_FRAME_FLAG_INTERLACED) && ctx->cur_field) {
546 273360 dest_y += frame->linesize[0];
547 273360 dest_u += frame->linesize[1];
548 273360 dest_v += frame->linesize[2];
549 }
550
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4336632 if (interlaced_mb) {
551 3224 dct_linesize_luma <<= 1;
552 3224 dct_linesize_chroma <<= 1;
553 }
554
555
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4336632 dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
556 4336632 dct_x_offset = 8 << shift1;
557
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4336632 if (!ctx->is_444) {
558 4323912 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
559 4323912 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
560 4323912 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
561 4323912 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
562
563
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4323912 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
564
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4323912 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
565 4323912 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
566 4323912 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
567 4323912 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
568 4323912 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
569 }
570 } else {
571 12720 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
572 12720 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
573 12720 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
574 12720 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
575
576
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12720 if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
577
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12720 dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
578 12720 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
579 12720 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
580 12720 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
581 12720 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
582 12720 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
583 12720 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
584 12720 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
585 12720 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
586 }
587 }
588
589 4336632 return 0;
590 }
591
592 30173 static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
593 int rownb, int threadnb)
594 {
595 30173 const DNXHDContext *ctx = avctx->priv_data;
596 30173 uint32_t offset = ctx->mb_scan_index[rownb];
597 30173 RowContext *row = ctx->rows + threadnb;
598 int x, ret;
599
600 30173 row->last_dc[0] =
601 30173 row->last_dc[1] =
602 30173 row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
603 30173 ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
604
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30173 if (ret < 0) {
605 row->errors++;
606 return ret;
607 }
608
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4366805 for (x = 0; x < ctx->mb_width; x++) {
609 4336632 int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
610
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4336632 if (ret < 0) {
611 row->errors++;
612 return ret;
613 }
614 }
615
616 30173 return 0;
617 }
618
619 435 static int dnxhd_decode_frame(AVCodecContext *avctx, AVFrame *picture,
620 int *got_frame, AVPacket *avpkt)
621 {
622 435 const uint8_t *buf = avpkt->data;
623 435 int buf_size = avpkt->size;
624 435 DNXHDContext *ctx = avctx->priv_data;
625 435 int first_field = 1;
626 int ret, i;
627
628 ff_dlog(avctx, "frame size %d\n", buf_size);
629
630
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870 for (i = 0; i < avctx->thread_count; i++)
631 435 ctx->rows[i].format = -1;
632
633 435 decode_coding_unit:
634
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502 if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
635 return ret;
636
637
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502 if ((avctx->width || avctx->height) &&
638
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456 (ctx->width != avctx->width || ctx->height != avctx->height)) {
639 av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
640 avctx->width, avctx->height, ctx->width, ctx->height);
641 first_field = 1;
642 }
643
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502 if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
644 av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
645 av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
646 first_field = 1;
647 }
648
649 502 avctx->pix_fmt = ctx->pix_fmt;
650 502 ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
651
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502 if (ret < 0)
652 return ret;
653
654
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502 if (first_field) {
655
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435 if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
656 return ret;
657 435 picture->pict_type = AV_PICTURE_TYPE_I;
658 435 picture->flags |= AV_FRAME_FLAG_KEY;
659 }
660
661 502 ctx->buf_size = buf_size - ctx->data_offset;
662 502 ctx->buf = buf + ctx->data_offset;
663 502 avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
664
665
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502 if (first_field && (picture->flags & AV_FRAME_FLAG_INTERLACED)) {
666 67 buf += ctx->cid_table->coding_unit_size;
667 67 buf_size -= ctx->cid_table->coding_unit_size;
668 67 first_field = 0;
669 67 goto decode_coding_unit;
670 }
671
672 435 ret = 0;
673
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870 for (i = 0; i < avctx->thread_count; i++) {
674 435 ret += ctx->rows[i].errors;
675 435 ctx->rows[i].errors = 0;
676 }
677
678
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435 if (ctx->act) {
679 static int act_warned;
680 2 int format = ctx->rows[0].format;
681
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2 for (i = 1; i < avctx->thread_count; i++) {
682 if (ctx->rows[i].format != format &&
683 ctx->rows[i].format != -1 /* not run */) {
684 format = 2;
685 break;
686 }
687 }
688
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2 switch (format) {
689 case -1:
690 case 2:
691 if (!act_warned) {
692 act_warned = 1;
693 av_log(ctx->avctx, AV_LOG_ERROR,
694 "Unsupported: variable ACT flag.\n");
695 }
696 break;
697 case 0:
698 ctx->pix_fmt = ctx->bit_depth==10
699 ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
700 break;
701 2 case 1:
702 4 ctx->pix_fmt = ctx->bit_depth==10
703
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2 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
704 2 break;
705 }
706 }
707 435 avctx->pix_fmt = ctx->pix_fmt;
708
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435 if (ret) {
709 av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
710 return AVERROR_INVALIDDATA;
711 }
712
713 435 *got_frame = 1;
714 435 return avpkt->size;
715 }
716
717 149 static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
718 {
719 149 DNXHDContext *ctx = avctx->priv_data;
720
721 149 ff_vlc_free(&ctx->ac_vlc);
722 149 ff_vlc_free(&ctx->dc_vlc);
723 149 ff_vlc_free(&ctx->run_vlc);
724
725 149 av_freep(&ctx->rows);
726
727 149 return 0;
728 }
729
730 const FFCodec ff_dnxhd_decoder = {
731 .p.name = "dnxhd",
732 CODEC_LONG_NAME("VC3/DNxHD"),
733 .p.type = AVMEDIA_TYPE_VIDEO,
734 .p.id = AV_CODEC_ID_DNXHD,
735 .priv_data_size = sizeof(DNXHDContext),
736 .init = dnxhd_decode_init,
737 .close = dnxhd_decode_close,
738 FF_CODEC_DECODE_CB(dnxhd_decode_frame),
739 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
740 AV_CODEC_CAP_SLICE_THREADS,
741 .p.profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
742 };
743