FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/dovi_rpudec.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 211 463 45.6%
Functions: 6 10 60.0%
Branches: 116 305 38.0%
Line Branch Exec Source
1 /*
2 * Dolby Vision RPU decoder
3 *
4 * Copyright (C) 2021 Jan Ekström
5 * Copyright (C) 2021-2024 Niklas Haas
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include "libavutil/mem.h"
25 #include "libavutil/crc.h"
26
27 #include "avcodec.h"
28 #include "dovi_rpu.h"
29 #include "golomb.h"
30 #include "get_bits.h"
31 #include "refstruct.h"
32
33 10171 int ff_dovi_get_metadata(DOVIContext *s, AVDOVIMetadata **out_metadata)
34 {
35 AVDOVIMetadata *dovi;
36 size_t dovi_size;
37
38
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 10171 if (!s->mapping || !s->color)
39 10169 return 0; /* incomplete dovi metadata */
40
41 2 dovi = av_dovi_metadata_alloc(&dovi_size);
42
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 2 if (!dovi)
43 ✗ return AVERROR(ENOMEM);
44
45 /* Copy only the parts of these structs known to us at compiler-time. */
46 #define COPY(t, a, b, last) memcpy(a, b, offsetof(t, last) + sizeof((b)->last))
47 2 COPY(AVDOVIRpuDataHeader, av_dovi_get_header(dovi), &s->header, ext_mapping_idc_5_7);
48 2 COPY(AVDOVIDataMapping, av_dovi_get_mapping(dovi), s->mapping, nlq_pivots);
49 2 COPY(AVDOVIColorMetadata, av_dovi_get_color(dovi), s->color, source_diagonal);
50
51
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 2 if (s->ext_blocks) {
52 2 const DOVIExt *ext = s->ext_blocks;
53 2 size_t ext_sz = FFMIN(sizeof(AVDOVIDmData), dovi->ext_block_size);
54
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 2 for (int i = 0; i < ext->num_static; i++)
55 ✗ memcpy(av_dovi_get_ext(dovi, dovi->num_ext_blocks++), &ext->dm_static[i], ext_sz);
56
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 4 for (int i = 0; i < ext->num_dynamic; i++)
57 2 memcpy(av_dovi_get_ext(dovi, dovi->num_ext_blocks++), &ext->dm_dynamic[i], ext_sz);
58 }
59
60 2 *out_metadata = dovi;
61 2 return dovi_size;
62 }
63
64 10171 int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame)
65 {
66 AVFrameSideData *sd;
67 AVDOVIMetadata *dovi;
68 AVBufferRef *buf;
69 int size;
70
71 10171 size = ff_dovi_get_metadata(s, &dovi);
72
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 10171 if (size <= 0)
73 10169 return size;
74
75 2 buf = av_buffer_create((uint8_t *) dovi, size, NULL, NULL, 0);
76
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 2 if (!buf) {
77 ✗ av_free(dovi);
78 ✗ return AVERROR(ENOMEM);
79 }
80
81 2 sd = av_frame_new_side_data_from_buf(frame, AV_FRAME_DATA_DOVI_METADATA, buf);
82
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 2 if (!sd) {
83 ✗ av_buffer_unref(&buf);
84 ✗ return AVERROR(ENOMEM);
85 }
86
87 2 return 0;
88 }
89
90 ✗ static inline uint64_t get_ue_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *hdr)
91 {
92 uint64_t ipart;
93 union { uint32_t u32; float f32; } fpart;
94
95 ✗ switch (hdr->coef_data_type) {
96 ✗ case RPU_COEFF_FIXED:
97 ✗ ipart = get_ue_golomb_long(gb);
98 ✗ fpart.u32 = get_bits_long(gb, hdr->coef_log2_denom);
99 ✗ return (ipart << hdr->coef_log2_denom) | fpart.u32;
100
101 ✗ case RPU_COEFF_FLOAT:
102 ✗ fpart.u32 = get_bits_long(gb, 32);
103 ✗ return fpart.f32 * (1LL << hdr->coef_log2_denom);
104 }
105
106 ✗ return 0; /* unreachable */
107 }
108
109 136 static inline int64_t get_se_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *hdr)
110 {
111 int64_t ipart;
112 union { uint32_t u32; float f32; } fpart;
113
114
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 136 switch (hdr->coef_data_type) {
115 136 case RPU_COEFF_FIXED:
116 136 ipart = get_se_golomb_long(gb);
117 136 fpart.u32 = get_bits_long(gb, hdr->coef_log2_denom);
118 136 return ipart * (1LL << hdr->coef_log2_denom) | fpart.u32;
119
120 ✗ case RPU_COEFF_FLOAT:
121 ✗ fpart.u32 = get_bits_long(gb, 32);
122 ✗ return fpart.f32 * (1LL << hdr->coef_log2_denom);
123 }
124
125 ✗ return 0; /* unreachable */
126 }
127
128 ✗ static inline unsigned get_variable_bits(GetBitContext *gb, int n)
129 {
130 ✗ unsigned int value = get_bits(gb, n);
131 ✗ int read_more = get_bits1(gb);
132 ✗ while (read_more) {
133 ✗ value = (value + 1) << n;
134 ✗ value |= get_bits(gb, n);
135 ✗ read_more = get_bits1(gb);
136 }
137 ✗ return value;
138 }
139
140 #define VALIDATE(VAR, MIN, MAX) \
141 do { \
142 if (VAR < MIN || VAR > MAX) { \
143 av_log(s->logctx, AV_LOG_ERROR, "RPU validation failed: " \
144 #MIN" <= "#VAR" = %d <= "#MAX"\n", (int) VAR); \
145 ff_dovi_ctx_unref(s); \
146 return AVERROR_INVALIDDATA; \
147 } \
148 } while (0)
149
150 2 static int parse_ext_v1(DOVIContext *s, GetBitContext *gb, AVDOVIDmData *dm)
151 {
152
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 2 switch (dm->level) {
153 2 case 1:
154 2 dm->l1.min_pq = get_bits(gb, 12);
155 2 dm->l1.max_pq = get_bits(gb, 12);
156 2 dm->l1.avg_pq = get_bits(gb, 12);
157 2 break;
158 ✗ case 2:
159 ✗ dm->l2.target_max_pq = get_bits(gb, 12);
160 ✗ dm->l2.trim_slope = get_bits(gb, 12);
161 ✗ dm->l2.trim_offset = get_bits(gb, 12);
162 ✗ dm->l2.trim_power = get_bits(gb, 12);
163 ✗ dm->l2.trim_chroma_weight = get_bits(gb, 12);
164 ✗ dm->l2.trim_saturation_gain = get_bits(gb, 12);
165 ✗ dm->l2.ms_weight = get_sbits(gb, 13);
166 ✗ VALIDATE(dm->l2.ms_weight, -1, 4095);
167 ✗ break;
168 ✗ case 4:
169 ✗ dm->l4.anchor_pq = get_bits(gb, 12);
170 ✗ dm->l4.anchor_power = get_bits(gb, 12);
171 ✗ break;
172 ✗ case 5:
173 ✗ dm->l5.left_offset = get_bits(gb, 13);
174 ✗ dm->l5.right_offset = get_bits(gb, 13);
175 ✗ dm->l5.top_offset = get_bits(gb, 13);
176 ✗ dm->l5.bottom_offset = get_bits(gb, 13);
177 ✗ break;
178 ✗ case 6:
179 ✗ dm->l6.max_luminance = get_bits(gb, 16);
180 ✗ dm->l6.min_luminance = get_bits(gb, 16);
181 ✗ dm->l6.max_cll = get_bits(gb, 16);
182 ✗ dm->l6.max_fall = get_bits(gb, 16);
183 ✗ break;
184 ✗ case 255:
185 ✗ dm->l255.dm_run_mode = get_bits(gb, 8);
186 ✗ dm->l255.dm_run_version = get_bits(gb, 8);
187 ✗ for (int i = 0; i < 4; i++)
188 ✗ dm->l255.dm_debug[i] = get_bits(gb, 8);
189 ✗ break;
190 ✗ default:
191 ✗ av_log(s->logctx, AV_LOG_WARNING,
192 ✗ "Unknown Dolby Vision DM v1 level: %u\n", dm->level);
193 }
194
195 2 return 0;
196 }
197
198 ✗ static AVCIExy get_cie_xy(GetBitContext *gb)
199 {
200 AVCIExy xy;
201 ✗ const int denom = 32767;
202 ✗ xy.x = av_make_q(get_sbits(gb, 16), denom);
203 ✗ xy.y = av_make_q(get_sbits(gb, 16), denom);
204 ✗ return xy;
205 }
206
207 ✗ static int parse_ext_v2(DOVIContext *s, GetBitContext *gb, AVDOVIDmData *dm,
208 int ext_block_length)
209 {
210 ✗ switch (dm->level) {
211 ✗ case 3:
212 ✗ dm->l3.min_pq_offset = get_bits(gb, 12);
213 ✗ dm->l3.max_pq_offset = get_bits(gb, 12);
214 ✗ dm->l3.avg_pq_offset = get_bits(gb, 12);
215 ✗ break;
216 ✗ case 8:
217 ✗ dm->l8.target_display_index = get_bits(gb, 8);
218 ✗ dm->l8.trim_slope = get_bits(gb, 12);
219 ✗ dm->l8.trim_offset = get_bits(gb, 12);
220 ✗ dm->l8.trim_power = get_bits(gb, 12);
221 ✗ dm->l8.trim_chroma_weight = get_bits(gb, 12);
222 ✗ dm->l8.trim_saturation_gain = get_bits(gb, 12);
223 ✗ dm->l8.ms_weight = get_bits(gb, 12);
224 ✗ if (ext_block_length < 12)
225 ✗ break;
226 ✗ dm->l8.target_mid_contrast = get_bits(gb, 12);
227 ✗ if (ext_block_length < 13)
228 ✗ break;
229 ✗ dm->l8.clip_trim = get_bits(gb, 12);
230 ✗ if (ext_block_length < 19)
231 ✗ break;
232 ✗ for (int i = 0; i < 6; i++)
233 ✗ dm->l8.saturation_vector_field[i] = get_bits(gb, 8);
234 ✗ if (ext_block_length < 25)
235 ✗ break;
236 ✗ for (int i = 0; i < 6; i++)
237 ✗ dm->l8.hue_vector_field[i] = get_bits(gb, 8);
238 ✗ break;
239 ✗ case 9:
240 ✗ dm->l9.source_primary_index = get_bits(gb, 8);
241 ✗ if (ext_block_length < 17)
242 ✗ break;
243 ✗ dm->l9.source_display_primaries.prim.r = get_cie_xy(gb);
244 ✗ dm->l9.source_display_primaries.prim.g = get_cie_xy(gb);
245 ✗ dm->l9.source_display_primaries.prim.b = get_cie_xy(gb);
246 ✗ dm->l9.source_display_primaries.wp = get_cie_xy(gb);
247 ✗ break;
248 ✗ case 10:
249 ✗ dm->l10.target_display_index = get_bits(gb, 8);
250 ✗ dm->l10.target_max_pq = get_bits(gb, 12);
251 ✗ dm->l10.target_min_pq = get_bits(gb, 12);
252 ✗ dm->l10.target_primary_index = get_bits(gb, 8);
253 ✗ if (ext_block_length < 21)
254 ✗ break;
255 ✗ dm->l10.target_display_primaries.prim.r = get_cie_xy(gb);
256 ✗ dm->l10.target_display_primaries.prim.g = get_cie_xy(gb);
257 ✗ dm->l10.target_display_primaries.prim.b = get_cie_xy(gb);
258 ✗ dm->l10.target_display_primaries.wp = get_cie_xy(gb);
259 ✗ break;
260 ✗ case 11:
261 ✗ dm->l11.content_type = get_bits(gb, 8);
262 ✗ dm->l11.whitepoint = get_bits(gb, 4);
263 ✗ dm->l11.reference_mode_flag = get_bits1(gb);
264 ✗ skip_bits(gb, 3); /* reserved */
265 ✗ dm->l11.sharpness = get_bits(gb, 2);
266 ✗ dm->l11.noise_reduction = get_bits(gb, 2);
267 ✗ dm->l11.mpeg_noise_reduction = get_bits(gb, 2);
268 ✗ dm->l11.frame_rate_conversion = get_bits(gb, 2);
269 ✗ dm->l11.brightness = get_bits(gb, 2);
270 ✗ dm->l11.color = get_bits(gb, 2);
271 ✗ break;
272 ✗ case 254:
273 ✗ dm->l254.dm_mode = get_bits(gb, 8);
274 ✗ dm->l254.dm_version_index = get_bits(gb, 8);
275 ✗ break;
276 ✗ default:
277 ✗ av_log(s->logctx, AV_LOG_WARNING,
278 ✗ "Unknown Dolby Vision DM v2 level: %u\n", dm->level);
279 }
280
281 ✗ return 0;
282 }
283
284 2 static int parse_ext_blocks(DOVIContext *s, GetBitContext *gb, int ver,
285 int compression, int err_recognition)
286 {
287 int num_ext_blocks, ext_block_length, start_pos, parsed_bits, ret;
288 2 DOVIExt *ext = s->ext_blocks;
289
290 2 num_ext_blocks = get_ue_golomb_31(gb);
291 2 align_get_bits(gb);
292
293
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 2 if (num_ext_blocks && !ext) {
294 1 ext = s->ext_blocks = ff_refstruct_allocz(sizeof(*s->ext_blocks));
295
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 1 if (!ext)
296 ✗ return AVERROR(ENOMEM);
297 }
298
299
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 4 while (num_ext_blocks--) {
300 AVDOVIDmData dummy;
301 AVDOVIDmData *dm;
302 uint8_t level;
303
304 2 ext_block_length = get_ue_golomb_31(gb);
305 2 level = get_bits(gb, 8);
306 2 start_pos = get_bits_count(gb);
307
308
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 2 if (ff_dovi_rpu_extension_is_static(level)) {
309 ✗ if (compression) {
310 ✗ av_log(s->logctx, AV_LOG_WARNING, "Compressed DM RPU contains "
311 "static extension block level %d\n", level);
312 ✗ if (err_recognition & (AV_EF_AGGRESSIVE | AV_EF_EXPLODE))
313 ✗ return AVERROR_INVALIDDATA;
314 ✗ dm = &dummy;
315 } else {
316 ✗ if (ext->num_static >= FF_ARRAY_ELEMS(ext->dm_static))
317 ✗ return AVERROR_INVALIDDATA;
318 ✗ dm = &ext->dm_static[ext->num_static++];
319 }
320 } else {
321
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 2 if (ext->num_dynamic >= FF_ARRAY_ELEMS(ext->dm_dynamic))
322 ✗ return AVERROR_INVALIDDATA;
323 2 dm = &ext->dm_dynamic[ext->num_dynamic++];
324 }
325
326 2 memset(dm, 0, sizeof(*dm));
327 2 dm->level = level;
328
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 2 switch (ver) {
329 2 case 1: ret = parse_ext_v1(s, gb, dm); break;
330 ✗ case 2: ret = parse_ext_v2(s, gb, dm, ext_block_length); break;
331 ✗ default: return AVERROR_BUG;
332 }
333
334
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 2 if (ret < 0)
335 ✗ return ret;
336
337 2 parsed_bits = get_bits_count(gb) - start_pos;
338
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 2 if (parsed_bits > ext_block_length * 8)
339 ✗ return AVERROR_INVALIDDATA;
340 2 skip_bits(gb, ext_block_length * 8 - parsed_bits);
341 }
342
343 2 return 0;
344 }
345
346 2 int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
347 int err_recognition)
348 {
349 2 AVDOVIRpuDataHeader *hdr = &s->header;
350 2 GetBitContext *gb = &(GetBitContext){0};
351 int ret;
352
353 uint8_t rpu_type;
354 uint8_t vdr_seq_info_present;
355 uint8_t vdr_dm_metadata_present;
356 2 uint8_t dm_compression = 0;
357 uint8_t use_prev_vdr_rpu;
358 uint8_t use_nlq;
359 uint8_t profile;
360
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 2 uint8_t compression = s->cfg.dv_profile ? s->cfg.dv_md_compression : 0;
361
362
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 2 if (rpu_size < 5)
363 ✗ return AVERROR_INVALIDDATA;
364
365 /* Container */
366
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 2 if (s->cfg.dv_profile == 10 /* dav1.10 */) {
367 /* DV inside AV1 re-uses an EMDF container skeleton, but with fixed
368 * values - so we can effectively treat this as a magic byte sequence.
369 *
370 * The exact fields are, as follows:
371 * emdf_version : f(2) = 0
372 * key_id : f(3) = 6
373 * emdf_payload_id : f(5) = 31
374 * emdf_payload_id_ext : var(5) = 225
375 * smploffste : f(1) = 0
376 * duratione : f(1) = 0
377 * groupide : f(1) = 0
378 * codecdatae : f(1) = 0
379 * discard_unknown_payload : f(1) = 1
380 */
381 ✗ const unsigned header_magic = 0x01be6841u;
382 unsigned emdf_header, emdf_payload_size, emdf_protection;
383 ✗ if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0)
384 ✗ return ret;
385 ✗ emdf_header = get_bits_long(gb, 27);
386 ✗ VALIDATE(emdf_header, header_magic, header_magic);
387 ✗ emdf_payload_size = get_variable_bits(gb, 8);
388 ✗ VALIDATE(emdf_payload_size, 6, 512);
389 ✗ if (emdf_payload_size * 8 > get_bits_left(gb))
390 ✗ return AVERROR_INVALIDDATA;
391
392 /* The payload is not byte-aligned (off by *one* bit, curse Dolby),
393 * so copy into a fresh buffer to preserve byte alignment of the
394 * RPU struct */
395 ✗ av_fast_padded_malloc(&s->rpu_buf, &s->rpu_buf_sz, emdf_payload_size);
396 ✗ if (!s->rpu_buf)
397 ✗ return AVERROR(ENOMEM);
398 ✗ for (int i = 0; i < emdf_payload_size; i++)
399 ✗ s->rpu_buf[i] = get_bits(gb, 8);
400 ✗ rpu = s->rpu_buf;
401 ✗ rpu_size = emdf_payload_size;
402
403 /* Validate EMDF footer */
404 ✗ emdf_protection = get_bits(gb, 5 + 12);
405 ✗ VALIDATE(emdf_protection, 0x400, 0x400);
406 } else {
407 /* NAL unit with prefix and trailing zeroes */
408
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 2 VALIDATE(rpu[0], 25, 25); /* NAL prefix */
409 2 rpu++;
410 2 rpu_size--;
411 /* Strip trailing padding bytes */
412
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 2 while (rpu_size && rpu[rpu_size - 1] == 0)
413 ✗ rpu_size--;
414 }
415
416
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 2 if (!rpu_size || rpu[rpu_size - 1] != 0x80)
417 ✗ return AVERROR_INVALIDDATA;
418
419
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 2 if (err_recognition & AV_EF_CRCCHECK) {
420 ✗ uint32_t crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
421 -1, rpu, rpu_size - 1)); /* exclude 0x80 */
422 ✗ if (crc) {
423 ✗ av_log(s->logctx, AV_LOG_ERROR, "RPU CRC mismatch: %X\n", crc);
424 ✗ if (err_recognition & AV_EF_EXPLODE)
425 ✗ return AVERROR_INVALIDDATA;
426 }
427 }
428
429
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 2 if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0)
430 ✗ return ret;
431
432 /* RPU header */
433 2 rpu_type = get_bits(gb, 6);
434
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 2 if (rpu_type != 2) {
435 ✗ av_log(s->logctx, AV_LOG_WARNING, "Unrecognized RPU type "
436 "%"PRIu8", ignoring\n", rpu_type);
437 ✗ return 0;
438 }
439
440 2 hdr->rpu_type = rpu_type;
441 2 hdr->rpu_format = get_bits(gb, 11);
442
443 /* Values specific to RPU type 2 */
444 2 hdr->vdr_rpu_profile = get_bits(gb, 4);
445 2 hdr->vdr_rpu_level = get_bits(gb, 4);
446
447 2 vdr_seq_info_present = get_bits1(gb);
448
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 2 if (vdr_seq_info_present) {
449 2 hdr->chroma_resampling_explicit_filter_flag = get_bits1(gb);
450 2 hdr->coef_data_type = get_bits(gb, 2);
451
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 2 VALIDATE(hdr->coef_data_type, RPU_COEFF_FIXED, RPU_COEFF_FLOAT);
452
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 2 switch (hdr->coef_data_type) {
453 2 case RPU_COEFF_FIXED:
454 2 hdr->coef_log2_denom = get_ue_golomb(gb);
455
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 2 VALIDATE(hdr->coef_log2_denom, 13, 32);
456 2 break;
457 ✗ case RPU_COEFF_FLOAT:
458 ✗ hdr->coef_log2_denom = 32; /* arbitrary, choose maximum precision */
459 ✗ break;
460 }
461
462 2 hdr->vdr_rpu_normalized_idc = get_bits(gb, 2);
463 2 hdr->bl_video_full_range_flag = get_bits1(gb);
464
465
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 2 if ((hdr->rpu_format & 0x700) == 0) {
466 2 int bl_bit_depth_minus8 = get_ue_golomb_31(gb);
467 2 int el_bit_depth_minus8 = get_ue_golomb_long(gb);
468 2 int vdr_bit_depth_minus8 = get_ue_golomb_31(gb);
469 /* ext_mapping_idc is in the upper 8 bits of el_bit_depth_minus8 */
470 2 int ext_mapping_idc = el_bit_depth_minus8 >> 8;
471 2 el_bit_depth_minus8 = el_bit_depth_minus8 & 0xFF;
472
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 2 VALIDATE(bl_bit_depth_minus8, 0, 8);
473
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 2 VALIDATE(el_bit_depth_minus8, 0, 8);
474
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 2 VALIDATE(ext_mapping_idc, 0, 0xFF);
475
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 2 VALIDATE(vdr_bit_depth_minus8, 0, 8);
476 2 hdr->bl_bit_depth = bl_bit_depth_minus8 + 8;
477 2 hdr->el_bit_depth = el_bit_depth_minus8 + 8;
478 2 hdr->ext_mapping_idc_0_4 = ext_mapping_idc & 0x1f; /* 5 bits */
479 2 hdr->ext_mapping_idc_5_7 = ext_mapping_idc >> 5;
480 2 hdr->vdr_bit_depth = vdr_bit_depth_minus8 + 8;
481 2 hdr->spatial_resampling_filter_flag = get_bits1(gb);
482 2 dm_compression = get_bits(gb, 3);
483 2 hdr->el_spatial_resampling_filter_flag = get_bits1(gb);
484 2 hdr->disable_residual_flag = get_bits1(gb);
485 } else {
486 ✗ avpriv_request_sample(s->logctx, "Unsupported RPU format 0x%x\n", hdr->rpu_format);
487 ✗ ff_dovi_ctx_unref(s);
488 ✗ return AVERROR_PATCHWELCOME;
489 }
490 } else {
491 /* lack of documentation/samples */
492 ✗ avpriv_request_sample(s->logctx, "Missing RPU VDR sequence info\n");
493 ✗ ff_dovi_ctx_unref(s);
494 ✗ return AVERROR_PATCHWELCOME;
495 }
496
497 2 vdr_dm_metadata_present = get_bits1(gb);
498
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 2 if (dm_compression > 1) {
499 /* It seems no device supports this */
500 ✗ av_log(s->logctx, AV_LOG_ERROR, "Dynamic metadata compression is not "
501 "yet implemented");
502 ✗ return AVERROR_PATCHWELCOME;
503
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 2 } else if (dm_compression && !vdr_dm_metadata_present) {
504 ✗ av_log(s->logctx, AV_LOG_ERROR, "Nonzero DM metadata compression method "
505 "but no DM metadata present");
506 ✗ return AVERROR_INVALIDDATA;
507 }
508
509 2 use_prev_vdr_rpu = get_bits1(gb);
510
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 2 use_nlq = (hdr->rpu_format & 0x700) == 0 && !hdr->disable_residual_flag;
511
512
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 2 profile = s->cfg.dv_profile ? s->cfg.dv_profile : ff_dovi_guess_profile_hevc(hdr);
513
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 2 if (profile == 5 && use_nlq) {
514 ✗ av_log(s->logctx, AV_LOG_ERROR, "Profile 5 RPUs should not use NLQ\n");
515 ✗ ff_dovi_ctx_unref(s);
516 ✗ return AVERROR_INVALIDDATA;
517 }
518
519
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 2 if (err_recognition & (AV_EF_COMPLIANT | AV_EF_CAREFUL)) {
520 ✗ if (profile < 8 && compression) {
521 ✗ av_log(s->logctx, AV_LOG_ERROR, "Profile %d RPUs should not use "
522 "metadata compression.", profile);
523 ✗ return AVERROR_INVALIDDATA;
524 }
525
526 ✗ if (use_prev_vdr_rpu && !compression) {
527 ✗ av_log(s->logctx, AV_LOG_ERROR, "Uncompressed RPUs should not have "
528 "use_prev_vdr_rpu=1\n");
529 ✗ return AVERROR_INVALIDDATA;
530 }
531
532 ✗ if (dm_compression && !compression) {
533 ✗ av_log(s->logctx, AV_LOG_ERROR, "Uncompressed RPUs should not use "
534 "dm_compression=%d\n", dm_compression);
535 ✗ return AVERROR_INVALIDDATA;
536 }
537 }
538
539
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 2 if (use_prev_vdr_rpu) {
540 ✗ int prev_vdr_rpu_id = get_ue_golomb_31(gb);
541 ✗ VALIDATE(prev_vdr_rpu_id, 0, DOVI_MAX_DM_ID);
542 ✗ if (!s->vdr[prev_vdr_rpu_id])
543 ✗ prev_vdr_rpu_id = 0;
544 ✗ if (!s->vdr[prev_vdr_rpu_id]) {
545 /* FIXME: Technically, the spec says that in this case we should
546 * synthesize "neutral" vdr metadata, but easier to just error
547 * out as this corner case is not hit in practice */
548 ✗ av_log(s->logctx, AV_LOG_ERROR, "Unknown previous RPU ID: %u\n",
549 prev_vdr_rpu_id);
550 ✗ ff_dovi_ctx_unref(s);
551 ✗ return AVERROR_INVALIDDATA;
552 }
553 ✗ s->mapping = s->vdr[prev_vdr_rpu_id];
554 } else {
555 AVDOVIDataMapping *mapping;
556 2 int vdr_rpu_id = get_ue_golomb_31(gb);
557
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 2 VALIDATE(vdr_rpu_id, 0, DOVI_MAX_DM_ID);
558
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 2 if (!s->vdr[vdr_rpu_id]) {
559 1 s->vdr[vdr_rpu_id] = ff_refstruct_allocz(sizeof(AVDOVIDataMapping));
560
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 1 if (!s->vdr[vdr_rpu_id]) {
561 ✗ ff_dovi_ctx_unref(s);
562 ✗ return AVERROR(ENOMEM);
563 }
564 }
565
566 2 s->mapping = mapping = s->vdr[vdr_rpu_id];
567 2 mapping->vdr_rpu_id = vdr_rpu_id;
568 2 mapping->mapping_color_space = get_ue_golomb_31(gb);
569 2 mapping->mapping_chroma_format_idc = get_ue_golomb_31(gb);
570
571
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 8 for (int c = 0; c < 3; c++) {
572 6 AVDOVIReshapingCurve *curve = &mapping->curves[c];
573 6 int num_pivots_minus_2 = get_ue_golomb_31(gb);
574 6 int pivot = 0;
575
576
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 6 VALIDATE(num_pivots_minus_2, 0, AV_DOVI_MAX_PIECES - 1);
577 6 curve->num_pivots = num_pivots_minus_2 + 2;
578
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 32 for (int i = 0; i < curve->num_pivots; i++) {
579 26 pivot += get_bits(gb, hdr->bl_bit_depth);
580 26 curve->pivots[i] = av_clip_uint16(pivot);
581 }
582 }
583
584
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 2 if (use_nlq) {
585 ✗ int nlq_pivot = 0;
586 ✗ mapping->nlq_method_idc = get_bits(gb, 3);
587
588 ✗ for (int i = 0; i < 2; i++) {
589 ✗ nlq_pivot += get_bits(gb, hdr->bl_bit_depth);
590 ✗ mapping->nlq_pivots[i] = av_clip_uint16(nlq_pivot);
591 }
592
593 /**
594 * The patent mentions another legal value, NLQ_MU_LAW, but it's
595 * not documented anywhere how to parse or apply that type of NLQ.
596 */
597 ✗ VALIDATE(mapping->nlq_method_idc, 0, AV_DOVI_NLQ_LINEAR_DZ);
598 } else {
599 2 mapping->nlq_method_idc = AV_DOVI_NLQ_NONE;
600 }
601
602 2 mapping->num_x_partitions = get_ue_golomb_long(gb) + 1;
603 2 mapping->num_y_partitions = get_ue_golomb_long(gb) + 1;
604 /* End of rpu_data_header(), start of vdr_rpu_data_payload() */
605
606
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 8 for (int c = 0; c < 3; c++) {
607 6 AVDOVIReshapingCurve *curve = &mapping->curves[c];
608
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 26 for (int i = 0; i < curve->num_pivots - 1; i++) {
609 20 int mapping_idc = get_ue_golomb_31(gb);
610
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 20 VALIDATE(mapping_idc, 0, 1);
611 20 curve->mapping_idc[i] = mapping_idc;
612
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 20 switch (mapping_idc) {
613 16 case AV_DOVI_MAPPING_POLYNOMIAL: {
614 16 int poly_order_minus1 = get_ue_golomb_31(gb);
615
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 16 VALIDATE(poly_order_minus1, 0, 1);
616 16 curve->poly_order[i] = poly_order_minus1 + 1;
617
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 16 if (poly_order_minus1 == 0) {
618 ✗ int linear_interp_flag = get_bits1(gb);
619 ✗ if (linear_interp_flag) {
620 /* lack of documentation/samples */
621 ✗ avpriv_request_sample(s->logctx, "Dolby Vision "
622 "linear interpolation");
623 ✗ ff_dovi_ctx_unref(s);
624 ✗ return AVERROR_PATCHWELCOME;
625 }
626 }
627
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 64 for (int k = 0; k <= curve->poly_order[i]; k++)
628 48 curve->poly_coef[i][k] = get_se_coef(gb, hdr);
629 16 break;
630 }
631 4 case AV_DOVI_MAPPING_MMR: {
632 4 int mmr_order_minus1 = get_bits(gb, 2);
633
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 4 VALIDATE(mmr_order_minus1, 0, 2);
634 4 curve->mmr_order[i] = mmr_order_minus1 + 1;
635 4 curve->mmr_constant[i] = get_se_coef(gb, hdr);
636
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 16 for (int j = 0; j < curve->mmr_order[i]; j++) {
637
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 96 for (int k = 0; k < 7; k++)
638 84 curve->mmr_coef[i][j][k] = get_se_coef(gb, hdr);
639 }
640 4 break;
641 }
642 }
643 }
644 }
645
646
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 2 if (use_nlq) {
647 ✗ for (int c = 0; c < 3; c++) {
648 ✗ AVDOVINLQParams *nlq = &mapping->nlq[c];
649 ✗ nlq->nlq_offset = get_bits(gb, hdr->el_bit_depth);
650 ✗ nlq->vdr_in_max = get_ue_coef(gb, hdr);
651 ✗ switch (mapping->nlq_method_idc) {
652 ✗ case AV_DOVI_NLQ_LINEAR_DZ:
653 ✗ nlq->linear_deadzone_slope = get_ue_coef(gb, hdr);
654 ✗ nlq->linear_deadzone_threshold = get_ue_coef(gb, hdr);
655 ✗ break;
656 }
657 }
658 }
659 }
660
661
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 2 if (vdr_dm_metadata_present) {
662 AVDOVIColorMetadata *color;
663 2 int affected_dm_id = get_ue_golomb_31(gb);
664 2 int current_dm_id = get_ue_golomb_31(gb);
665
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 2 VALIDATE(affected_dm_id, 0, DOVI_MAX_DM_ID);
666
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 2 VALIDATE(current_dm_id, 0, DOVI_MAX_DM_ID);
667
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 2 if (affected_dm_id != current_dm_id) {
668 /* The spec does not explain these fields at all, and there is
669 * a lack of samples to understand how they're supposed to work,
670 * so just assert them being equal for now */
671 ✗ avpriv_request_sample(s->logctx, "affected/current_dm_metadata_id "
672 "mismatch? %u != %u\n", affected_dm_id, current_dm_id);
673 ✗ ff_dovi_ctx_unref(s);
674 ✗ return AVERROR_PATCHWELCOME;
675 }
676
677
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 2 if (!s->dm) {
678 1 s->dm = ff_refstruct_allocz(sizeof(AVDOVIColorMetadata));
679
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 1 if (!s->dm) {
680 ✗ ff_dovi_ctx_unref(s);
681 ✗ return AVERROR(ENOMEM);
682 }
683 }
684
685 2 s->color = color = s->dm;
686 2 color->dm_metadata_id = affected_dm_id;
687 2 color->scene_refresh_flag = get_ue_golomb_31(gb);
688
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 2 if (!dm_compression) {
689
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 20 for (int i = 0; i < 9; i++)
690 18 color->ycc_to_rgb_matrix[i] = av_make_q(get_sbits(gb, 16), 1 << 13);
691
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 8 for (int i = 0; i < 3; i++) {
692
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 6 int denom = profile == 4 ? (1 << 30) : (1 << 28);
693 6 unsigned offset = get_bits_long(gb, 32);
694
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 6 if (offset > INT_MAX) {
695 /* Ensure the result fits inside AVRational */
696 ✗ offset >>= 1;
697 ✗ denom >>= 1;
698 }
699 6 color->ycc_to_rgb_offset[i] = av_make_q(offset, denom);
700 }
701
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 20 for (int i = 0; i < 9; i++)
702 18 color->rgb_to_lms_matrix[i] = av_make_q(get_sbits(gb, 16), 1 << 14);
703
704 2 color->signal_eotf = get_bits(gb, 16);
705 2 color->signal_eotf_param0 = get_bits(gb, 16);
706 2 color->signal_eotf_param1 = get_bits(gb, 16);
707 2 color->signal_eotf_param2 = get_bits_long(gb, 32);
708 2 color->signal_bit_depth = get_bits(gb, 5);
709
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 2 VALIDATE(color->signal_bit_depth, 8, 16);
710 2 color->signal_color_space = get_bits(gb, 2);
711 2 color->signal_chroma_format = get_bits(gb, 2);
712 2 color->signal_full_range_flag = get_bits(gb, 2);
713 2 color->source_min_pq = get_bits(gb, 12);
714 2 color->source_max_pq = get_bits(gb, 12);
715 2 color->source_diagonal = get_bits(gb, 10);
716 }
717
718 /* Parse extension blocks */
719
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 2 if (s->ext_blocks) {
720 1 DOVIExt *ext = s->ext_blocks;
721
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 1 if (!dm_compression)
722 1 ext->num_static = 0;
723 1 ext->num_dynamic = 0;
724 }
725
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 2 if ((ret = parse_ext_blocks(s, gb, 1, dm_compression, err_recognition)) < 0) {
726 ✗ ff_dovi_ctx_unref(s);
727 ✗ return ret;
728 }
729
730
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 2 if (get_bits_left(gb) > 48 /* padding + CRC32 + terminator */) {
731 ✗ if ((ret = parse_ext_blocks(s, gb, 2, dm_compression, err_recognition)) < 0) {
732 ✗ ff_dovi_ctx_unref(s);
733 ✗ return ret;
734 }
735 }
736 } else {
737 ✗ s->color = &ff_dovi_color_default;
738 ✗ ff_refstruct_unref(&s->ext_blocks);
739 }
740
741 2 return 0;
742 }
743