FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/iamf_parse.c
Date: 2026-04-18 02:30:19
Exec Total Coverage
Lines: 590 821 71.9%
Functions: 14 15 93.3%
Branches: 280 469 59.7%
Line Branch Exec Source
1 /*
2 * Immersive Audio Model and Formats parsing
3 * Copyright (c) 2023 James Almer <jamrial@gmail.com>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/avassert.h"
23 #include "libavutil/iamf.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/log.h"
26 #include "libavutil/mem.h"
27 #include "libavcodec/get_bits.h"
28 #include "libavcodec/flac.h"
29 #include "libavcodec/leb.h"
30 #include "libavcodec/mpeg4audio.h"
31 #include "libavcodec/put_bits.h"
32 #include "avio_internal.h"
33 #include "iamf_parse.h"
34 #include "isom.h"
35
36 10 static int opus_decoder_config(IAMFCodecConfig *codec_config,
37 AVIOContext *pb, int len)
38 {
39 10 int ret, left = len - avio_tell(pb);
40
41
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 10 if (left < 11 || codec_config->audio_roll_distance >= 0)
42 ✗ return AVERROR_INVALIDDATA;
43
44 10 codec_config->extradata = av_malloc(left + 8);
45
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 10 if (!codec_config->extradata)
46 ✗ return AVERROR(ENOMEM);
47
48 10 AV_WB32A(codec_config->extradata, MKBETAG('O','p','u','s'));
49 10 AV_WB32A(codec_config->extradata + 4, MKBETAG('H','e','a','d'));
50 10 ret = ffio_read_size(pb, codec_config->extradata + 8, left);
51
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 10 if (ret < 0)
52 ✗ return ret;
53
54 10 codec_config->extradata_size = left + 8;
55 10 codec_config->sample_rate = 48000;
56
57 10 return 0;
58 }
59
60 2 static int aac_decoder_config(IAMFCodecConfig *codec_config,
61 AVIOContext *pb, int len, void *logctx)
62 {
63 2 MPEG4AudioConfig cfg = { 0 };
64 int object_type_id, codec_id, stream_type;
65 int ret, tag, left;
66
67
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 2 if (codec_config->audio_roll_distance >= 0)
68 ✗ return AVERROR_INVALIDDATA;
69
70 2 ff_mp4_read_descr(logctx, pb, &tag);
71
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 2 if (tag != MP4DecConfigDescrTag)
72 ✗ return AVERROR_INVALIDDATA;
73
74 2 object_type_id = avio_r8(pb);
75
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 2 if (object_type_id != 0x40)
76 ✗ return AVERROR_INVALIDDATA;
77
78 2 stream_type = avio_r8(pb);
79
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 2 if (((stream_type >> 2) != 5) || ((stream_type >> 1) & 1))
80 ✗ return AVERROR_INVALIDDATA;
81
82 2 avio_skip(pb, 3); // buffer size db
83 2 avio_skip(pb, 4); // rc_max_rate
84 2 avio_skip(pb, 4); // avg bitrate
85
86 2 codec_id = ff_codec_get_id(ff_mp4_obj_type, object_type_id);
87
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 2 if (codec_id && codec_id != codec_config->codec_id)
88 ✗ return AVERROR_INVALIDDATA;
89
90 2 left = ff_mp4_read_descr(logctx, pb, &tag);
91
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 2 if (tag != MP4DecSpecificDescrTag ||
92
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 2 !left || left > (len - avio_tell(pb)))
93 ✗ return AVERROR_INVALIDDATA;
94
95 // We pad extradata here because avpriv_mpeg4audio_get_config2() needs it.
96 2 codec_config->extradata = av_malloc((size_t)left + AV_INPUT_BUFFER_PADDING_SIZE);
97
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 2 if (!codec_config->extradata)
98 ✗ return AVERROR(ENOMEM);
99
100 2 ret = ffio_read_size(pb, codec_config->extradata, left);
101
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 2 if (ret < 0)
102 ✗ return ret;
103 2 codec_config->extradata_size = left;
104 2 memset(codec_config->extradata + codec_config->extradata_size, 0,
105 AV_INPUT_BUFFER_PADDING_SIZE);
106
107 2 ret = avpriv_mpeg4audio_get_config2(&cfg, codec_config->extradata,
108 codec_config->extradata_size, 1, logctx);
109
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 2 if (ret < 0)
110 ✗ return ret;
111
112 2 codec_config->sample_rate = cfg.sample_rate;
113
114 2 return 0;
115 }
116
117 24 static int flac_decoder_config(IAMFCodecConfig *codec_config,
118 AVIOContext *pb, int len)
119 {
120 int ret, left;
121
122
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 24 if (codec_config->audio_roll_distance)
123 ✗ return AVERROR_INVALIDDATA;
124
125 24 avio_skip(pb, 4); // METADATA_BLOCK_HEADER
126
127 24 left = len - avio_tell(pb);
128
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 24 if (left < FLAC_STREAMINFO_SIZE)
129 ✗ return AVERROR_INVALIDDATA;
130
131 24 codec_config->extradata = av_malloc(left);
132
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 24 if (!codec_config->extradata)
133 ✗ return AVERROR(ENOMEM);
134
135 24 ret = ffio_read_size(pb, codec_config->extradata, left);
136
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 24 if (ret < 0)
137 ✗ return ret;
138
139 24 codec_config->extradata_size = left;
140 24 codec_config->sample_rate = AV_RB24(codec_config->extradata + 10) >> 4;
141
142 24 return 0;
143 }
144
145 ✗ static int ipcm_decoder_config(IAMFCodecConfig *codec_config,
146 AVIOContext *pb, int len)
147 {
148 static const enum AVCodecID sample_fmt[2][3] = {
149 { AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S24BE, AV_CODEC_ID_PCM_S32BE },
150 { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S24LE, AV_CODEC_ID_PCM_S32LE },
151 };
152 ✗ int sample_format = avio_r8(pb); // 0 = BE, 1 = LE
153 ✗ int sample_size = (avio_r8(pb) / 8 - 2); // 16, 24, 32
154 ✗ if (sample_format > 1 || sample_size > 2U || codec_config->audio_roll_distance)
155 ✗ return AVERROR_INVALIDDATA;
156
157 ✗ codec_config->codec_id = sample_fmt[sample_format][sample_size];
158 ✗ codec_config->sample_rate = avio_rb32(pb);
159
160 ✗ if (len - avio_tell(pb))
161 ✗ return AVERROR_INVALIDDATA;
162
163 ✗ return 0;
164 }
165
166 36 static int codec_config_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
167 {
168 36 IAMFCodecConfig **tmp, *codec_config = NULL;
169 FFIOContext b;
170 AVIOContext *pbc;
171 uint8_t *buf;
172 enum AVCodecID avcodec_id;
173 unsigned codec_config_id, nb_samples, codec_id;
174 int16_t audio_roll_distance;
175 int ret;
176
177 36 buf = av_malloc(len);
178
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 36 if (!buf)
179 ✗ return AVERROR(ENOMEM);
180
181 36 ret = ffio_read_size(pb, buf, len);
182
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 36 if (ret < 0)
183 ✗ goto fail;
184
185 36 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
186 36 pbc = &b.pub;
187
188 36 codec_config_id = ffio_read_leb(pbc);
189 36 codec_id = avio_rb32(pbc);
190 36 nb_samples = ffio_read_leb(pbc);
191 36 audio_roll_distance = avio_rb16(pbc);
192
193
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 36 switch(codec_id) {
194 10 case MKBETAG('O','p','u','s'):
195 10 avcodec_id = AV_CODEC_ID_OPUS;
196 10 break;
197 2 case MKBETAG('m','p','4','a'):
198 2 avcodec_id = AV_CODEC_ID_AAC;
199 2 break;
200 24 case MKBETAG('f','L','a','C'):
201 24 avcodec_id = AV_CODEC_ID_FLAC;
202 24 break;
203 ✗ default:
204 ✗ avcodec_id = AV_CODEC_ID_NONE;
205 ✗ break;
206 }
207
208
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 36 for (int i = 0; i < c->nb_codec_configs; i++)
209 ✗ if (c->codec_configs[i]->codec_config_id == codec_config_id) {
210 ✗ ret = AVERROR_INVALIDDATA;
211 ✗ goto fail;
212 }
213
214 36 tmp = av_realloc_array(c->codec_configs, c->nb_codec_configs + 1, sizeof(*c->codec_configs));
215
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 36 if (!tmp) {
216 ✗ ret = AVERROR(ENOMEM);
217 ✗ goto fail;
218 }
219 36 c->codec_configs = tmp;
220
221 36 codec_config = av_mallocz(sizeof(*codec_config));
222
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 36 if (!codec_config) {
223 ✗ ret = AVERROR(ENOMEM);
224 ✗ goto fail;
225 }
226
227 36 codec_config->codec_config_id = codec_config_id;
228 36 codec_config->codec_id = avcodec_id;
229 36 codec_config->nb_samples = nb_samples;
230 36 codec_config->audio_roll_distance = audio_roll_distance;
231
232
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 36 switch(codec_id) {
233 10 case MKBETAG('O','p','u','s'):
234 10 ret = opus_decoder_config(codec_config, pbc, len);
235 10 break;
236 2 case MKBETAG('m','p','4','a'):
237 2 ret = aac_decoder_config(codec_config, pbc, len, s);
238 2 break;
239 24 case MKBETAG('f','L','a','C'):
240 24 ret = flac_decoder_config(codec_config, pbc, len);
241 24 break;
242 ✗ case MKBETAG('i','p','c','m'):
243 ✗ ret = ipcm_decoder_config(codec_config, pbc, len);
244 ✗ break;
245 ✗ default:
246 ✗ break;
247 }
248
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 36 if (ret < 0)
249 ✗ goto fail;
250
251
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 36 if ((codec_config->nb_samples > INT_MAX) || codec_config->nb_samples <= 0 ||
252
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 36 (-codec_config->audio_roll_distance > INT_MAX / codec_config->nb_samples)) {
253 ✗ ret = AVERROR_INVALIDDATA;
254 ✗ goto fail;
255 }
256
257 36 c->codec_configs[c->nb_codec_configs++] = codec_config;
258
259 36 len -= avio_tell(pbc);
260
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 36 if (len)
261 ✗ av_log(s, AV_LOG_WARNING, "Underread in codec_config_obu. %d bytes left at the end\n", len);
262
263 36 ret = 0;
264 36 fail:
265 36 av_free(buf);
266
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 36 if (ret < 0) {
267 ✗ if (codec_config)
268 ✗ av_free(codec_config->extradata);
269 ✗ av_free(codec_config);
270 }
271 36 return ret;
272 }
273
274 170 static int update_extradata(AVCodecParameters *codecpar)
275 {
276 GetBitContext gb;
277 PutBitContext pb;
278 int ret;
279
280
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 170 switch(codecpar->codec_id) {
281 40 case AV_CODEC_ID_OPUS:
282 40 AV_WB8(codecpar->extradata + 9, codecpar->ch_layout.nb_channels);
283 40 AV_WL16A(codecpar->extradata + 10, AV_RB16A(codecpar->extradata + 10)); // Byte swap pre-skip
284 40 AV_WL32A(codecpar->extradata + 12, AV_RB32A(codecpar->extradata + 12)); // Byte swap sample rate
285 40 AV_WL16A(codecpar->extradata + 16, AV_RB16A(codecpar->extradata + 16)); // Byte swap Output Gain
286 40 break;
287 2 case AV_CODEC_ID_AAC: {
288 uint8_t buf[6];
289 2 int size = FFMIN(codecpar->extradata_size, sizeof(buf));
290
291 2 init_put_bits(&pb, buf, sizeof(buf));
292 2 ret = init_get_bits8(&gb, codecpar->extradata, size);
293
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 2 if (ret < 0)
294 ✗ return ret;
295
296 2 ret = get_bits(&gb, 5);
297 2 put_bits(&pb, 5, ret);
298
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 2 if (ret == AOT_ESCAPE) // violates section 3.11.2, but better check for it
299 ✗ put_bits(&pb, 6, get_bits(&gb, 6));
300 2 ret = get_bits(&gb, 4);
301 2 put_bits(&pb, 4, ret);
302
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 2 if (ret == 0x0f)
303 ✗ put_bits(&pb, 24, get_bits(&gb, 24));
304
305 2 skip_bits(&gb, 4);
306 2 put_bits(&pb, 4, codecpar->ch_layout.nb_channels); // set channel config
307 2 ret = get_bits_left(&gb);
308
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 2 if (ret < 0)
309 ✗ return AVERROR_INVALIDDATA;
310
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 2 ret = FFMIN(ret, put_bits_left(&pb));
311
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 2 while (ret >= 32) {
312 ✗ put_bits32(&pb, get_bits_long(&gb, 32));
313 ✗ ret -= 32;
314 }
315 2 put_bits(&pb, ret, get_bits_long(&gb, ret));
316 2 flush_put_bits(&pb);
317
318 2 memcpy(codecpar->extradata, buf, put_bytes_output(&pb));
319 2 break;
320 }
321 128 case AV_CODEC_ID_FLAC: {
322 uint8_t buf[13];
323 128 int size = FFMIN(codecpar->extradata_size, sizeof(buf));
324
325 128 init_put_bits(&pb, buf, sizeof(buf));
326 128 ret = init_get_bits8(&gb, codecpar->extradata, size);
327
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 128 if (ret < 0)
328 ✗ return ret;
329
330 128 put_bits32(&pb, get_bits_long(&gb, 32)); // min/max blocksize
331 128 put_bits63(&pb, 48, get_bits64(&gb, 48)); // min/max framesize
332 128 put_bits(&pb, 20, get_bits(&gb, 20)); // samplerate
333 128 skip_bits(&gb, 3);
334 128 put_bits(&pb, 3, codecpar->ch_layout.nb_channels - 1);
335 128 ret = get_bits_left(&gb);
336
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 128 if (ret < 0)
337 ✗ return AVERROR_INVALIDDATA;
338
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 128 ret = FFMIN(ret, put_bits_left(&pb));
339 128 put_bits(&pb, ret, get_bits(&gb, ret));
340 128 flush_put_bits(&pb);
341
342 128 memcpy(codecpar->extradata, buf, put_bytes_output(&pb));
343 128 break;
344 }
345 }
346
347 170 return 0;
348 }
349
350 156 static int parse_coupled_substream(AVChannelLayout *out, AVChannelLayout *in, int n)
351 {
352
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 156 if (in->u.mask & AV_CH_LAYOUT_STEREO) {
353 27 out->u.map[n++].id = AV_CHAN_FRONT_LEFT;
354 27 out->u.map[n++].id = AV_CHAN_FRONT_RIGHT;
355 27 in->u.mask &= ~AV_CH_LAYOUT_STEREO;
356
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 129 } else if (in->u.mask & (AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)) {
357 2 out->u.map[n++].id = AV_CHAN_FRONT_LEFT_OF_CENTER;
358 2 out->u.map[n++].id = AV_CHAN_FRONT_RIGHT_OF_CENTER;
359 2 in->u.mask &= ~(AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER);
360
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 127 } else if (in->u.mask & (AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)) {
361 19 out->u.map[n++].id = AV_CHAN_SIDE_LEFT;
362 19 out->u.map[n++].id = AV_CHAN_SIDE_RIGHT;
363 19 in->u.mask &= ~(AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT);
364
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 108 } else if (in->u.mask & (AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)) {
365 10 out->u.map[n++].id = AV_CHAN_BACK_LEFT;
366 10 out->u.map[n++].id = AV_CHAN_BACK_RIGHT;
367 10 in->u.mask &= ~(AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT);
368
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 98 } else if (in->u.mask & (AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT)) {
369 14 out->u.map[n++].id = AV_CHAN_TOP_FRONT_LEFT;
370 14 out->u.map[n++].id = AV_CHAN_TOP_FRONT_RIGHT;
371 14 in->u.mask &= ~(AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT);
372
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 84 } else if (in->u.mask & (AV_CH_TOP_SIDE_LEFT|AV_CH_TOP_SIDE_RIGHT)) {
373 2 out->u.map[n++].id = AV_CHAN_TOP_SIDE_LEFT;
374 2 out->u.map[n++].id = AV_CHAN_TOP_SIDE_RIGHT;
375 2 in->u.mask &= ~(AV_CH_TOP_SIDE_LEFT|AV_CH_TOP_SIDE_RIGHT);
376
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 82 } else if (in->u.mask & (AV_CH_TOP_BACK_LEFT|AV_CH_TOP_BACK_RIGHT)) {
377 14 out->u.map[n++].id = AV_CHAN_TOP_BACK_LEFT;
378 14 out->u.map[n++].id = AV_CHAN_TOP_BACK_RIGHT;
379 14 in->u.mask &= ~(AV_CH_TOP_BACK_LEFT|AV_CH_TOP_BACK_RIGHT);
380 }
381
382 156 return n;
383 }
384
385 27 static int scalable_channel_layout_config(void *s, AVIOContext *pb,
386 IAMFAudioElement *audio_element,
387 const IAMFCodecConfig *codec_config)
388 {
389 27 int nb_layers, k = 0;
390
391 27 nb_layers = avio_r8(pb) >> 5; // get_bits(&gb, 3);
392 // skip_bits(&gb, 5); //reserved
393
394
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 27 if (nb_layers > 6 || nb_layers == 0)
395 ✗ return AVERROR_INVALIDDATA;
396
397 27 audio_element->layers = av_calloc(nb_layers, sizeof(*audio_element->layers));
398
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 27 if (!audio_element->layers)
399 ✗ return AVERROR(ENOMEM);
400
401 27 audio_element->nb_layers = nb_layers;
402
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 95 for (int i = 0, n = 0; i < nb_layers; i++) {
403 68 AVChannelLayout ch_layout = { 0 };
404 AVIAMFLayer *layer;
405 int loudspeaker_layout, output_gain_is_present_flag;
406 int substream_count, coupled_substream_count;
407 68 int expanded_loudspeaker_layout = -1;
408 68 int ret, byte = avio_r8(pb);
409 int channels;
410
411 68 layer = av_iamf_audio_element_add_layer(audio_element->element);
412
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 68 if (!layer)
413 ✗ return AVERROR(ENOMEM);
414
415 68 loudspeaker_layout = byte >> 4; // get_bits(&gb, 4);
416 68 output_gain_is_present_flag = (byte >> 3) & 1; //get_bits1(&gb);
417
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 68 if ((byte >> 2) & 1)
418 5 layer->flags |= AV_IAMF_LAYER_FLAG_RECON_GAIN;
419 68 substream_count = avio_r8(pb);
420 68 coupled_substream_count = avio_r8(pb);
421
422
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 68 if (!substream_count || coupled_substream_count > substream_count ||
423
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 68 substream_count + k > audio_element->nb_substreams)
424 ✗ return AVERROR_INVALIDDATA;
425
426 68 audio_element->layers[i].substream_count = substream_count;
427 68 audio_element->layers[i].coupled_substream_count = coupled_substream_count;
428
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 68 if (output_gain_is_present_flag) {
429 ✗ layer->output_gain_flags = avio_r8(pb) >> 2; // get_bits(&gb, 6);
430 ✗ layer->output_gain = av_make_q(sign_extend(avio_rb16(pb), 16), 1 << 8);
431 }
432
433
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 68 if (loudspeaker_layout == 15) {
434
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 2 if (i) {
435 ✗ av_log(s, AV_LOG_ERROR, "expanded_loudspeaker_layout set with more than one layer in Audio Element #%d\n",
436 audio_element->audio_element_id);
437 ✗ return AVERROR_INVALIDDATA;
438 }
439 2 expanded_loudspeaker_layout = avio_r8(pb);
440 }
441
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 68 if (expanded_loudspeaker_layout >= 0 && expanded_loudspeaker_layout < 13) {
442 2 av_channel_layout_copy(&ch_layout, &ff_iamf_expanded_scalable_ch_layouts[expanded_loudspeaker_layout]);
443
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 66 } else if (loudspeaker_layout < 10) {
444 66 av_channel_layout_copy(&ch_layout, &ff_iamf_scalable_ch_layouts[loudspeaker_layout]);
445
2/2
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 66 if (i) {
446 41 uint64_t mask = av_channel_layout_subset(&audio_element->element->layers[i-1]->ch_layout, UINT64_MAX);
447 // When the first layer is Mono, the second layer may not have the C channel (e.g. Stereo)
448
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 41 if (audio_element->element->layers[i-1]->ch_layout.nb_channels == 1)
449 ✗ n--;
450
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 41 else if ((ch_layout.u.mask & mask) != mask)
451 ✗ return AVERROR_INVALIDDATA;
452 41 ch_layout.u.mask &= ~mask;
453 }
454 } else {
455 ✗ if (expanded_loudspeaker_layout >= 0)
456 ✗ avpriv_request_sample(s, "expanded_loudspeaker_layout %d", expanded_loudspeaker_layout);
457 else
458 ✗ avpriv_request_sample(s, "loudspeaker_layout %d", loudspeaker_layout);
459 ✗ return AVERROR_PATCHWELCOME;
460 }
461
462 68 channels = ch_layout.nb_channels;
463
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 68 if (i) {
464
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 41 if (ch_layout.nb_channels <= audio_element->element->layers[i-1]->ch_layout.nb_channels)
465 ✗ return AVERROR_INVALIDDATA;
466 41 channels -= audio_element->element->layers[i-1]->ch_layout.nb_channels;
467 }
468
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 68 if (channels != substream_count + coupled_substream_count)
469 ✗ return AVERROR_INVALIDDATA;
470
471
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 194 for (int j = 0; j < substream_count; j++) {
472 126 IAMFSubStream *substream = &audio_element->substreams[k++];
473
474
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 126 substream->codecpar->ch_layout = coupled_substream_count-- > 0 ? (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO :
475 (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
476
477 126 ret = update_extradata(substream->codecpar);
478
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 126 if (ret < 0)
479 ✗ return ret;
480 }
481
482 68 ret = av_channel_layout_custom_init(&layer->ch_layout, ch_layout.nb_channels);
483
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 68 if (ret < 0)
484 ✗ return ret;
485
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 286 for (int j = 0; j < n; j++)
486 218 layer->ch_layout.u.map[j].id = av_channel_layout_channel_from_index(&audio_element->element->layers[i-1]->ch_layout, j);
487
488 68 coupled_substream_count = audio_element->layers[i].coupled_substream_count;
489
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 156 while (coupled_substream_count--) {
490 88 n = parse_coupled_substream(&layer->ch_layout, &ch_layout, n);
491 }
492
493 68 substream_count -= audio_element->layers[i].coupled_substream_count;
494 68 n = parse_coupled_substream(&layer->ch_layout, &ch_layout, n); // In case the first layer is Mono
495
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 106 while (substream_count--) {
496
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 38 if (ch_layout.u.mask & AV_CH_FRONT_CENTER) {
497 19 layer->ch_layout.u.map[n++].id = AV_CHAN_FRONT_CENTER;
498 19 ch_layout.u.mask &= ~AV_CH_FRONT_CENTER;
499 }
500
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 38 if (ch_layout.u.mask & AV_CH_LOW_FREQUENCY) {
501 19 layer->ch_layout.u.map[n++].id = AV_CHAN_LOW_FREQUENCY;
502 19 ch_layout.u.mask &= ~AV_CH_LOW_FREQUENCY;
503 }
504 }
505
506
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 68 if (n != ch_layout.nb_channels)
507 ✗ return AVERROR_INVALIDDATA;
508
509 68 ret = av_channel_layout_retype(&layer->ch_layout, AV_CHANNEL_ORDER_NATIVE, 0);
510
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 68 if (ret < 0 && ret != AVERROR(ENOSYS))
511 ✗ return ret;
512 }
513
514
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 27 if (k != audio_element->nb_substreams)
515 ✗ return AVERROR_INVALIDDATA;
516
517 27 return 0;
518 }
519
520 11 static int ambisonics_config(void *s, AVIOContext *pb,
521 IAMFAudioElement *audio_element,
522 const IAMFCodecConfig *codec_config)
523 {
524 AVIAMFLayer *layer;
525 unsigned ambisonics_mode;
526 int output_channel_count, substream_count, order;
527 int ret;
528
529 11 ambisonics_mode = ffio_read_leb(pb);
530
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 11 if (ambisonics_mode > 1)
531 ✗ return AVERROR_INVALIDDATA;
532
533 11 output_channel_count = avio_r8(pb); // C
534 11 substream_count = avio_r8(pb); // N
535
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 11 if (audio_element->nb_substreams != substream_count || output_channel_count == 0)
536 ✗ return AVERROR_INVALIDDATA;
537
538 11 order = floor(sqrt(output_channel_count - 1));
539 /* incomplete order - some harmonics are missing */
540
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 11 if ((order + 1) * (order + 1) != output_channel_count)
541 ✗ return AVERROR_INVALIDDATA;
542
543 11 audio_element->layers = av_mallocz(sizeof(*audio_element->layers));
544
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 11 if (!audio_element->layers)
545 ✗ return AVERROR(ENOMEM);
546
547 11 audio_element->nb_layers = 1;
548 11 audio_element->layers->substream_count = substream_count;
549
550 11 layer = av_iamf_audio_element_add_layer(audio_element->element);
551
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 11 if (!layer)
552 ✗ return AVERROR(ENOMEM);
553
554 11 layer->ambisonics_mode = ambisonics_mode;
555
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 11 if (ambisonics_mode == 0) {
556
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 20 for (int i = 0; i < substream_count; i++) {
557 16 IAMFSubStream *substream = &audio_element->substreams[i];
558
559 16 substream->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
560
561 16 ret = update_extradata(substream->codecpar);
562
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 16 if (ret < 0)
563 ✗ return ret;
564 }
565
566 4 ret = av_channel_layout_custom_init(&layer->ch_layout, output_channel_count);
567
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 4 if (ret < 0)
568 ✗ return ret;
569
570
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 20 for (int i = 0; i < output_channel_count; i++)
571 16 layer->ch_layout.u.map[i].id = avio_r8(pb) + AV_CHAN_AMBISONIC_BASE;
572
573 4 ret = av_channel_layout_retype(&layer->ch_layout, AV_CHANNEL_ORDER_AMBISONIC, 0);
574
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 4 if (ret < 0 && ret != AVERROR(ENOSYS))
575 ✗ return ret;
576 } else {
577 7 int coupled_substream_count = avio_r8(pb); // M
578 7 int count = substream_count + coupled_substream_count;
579 7 int nb_demixing_matrix = count * output_channel_count;
580
581 7 audio_element->layers->coupled_substream_count = coupled_substream_count;
582
583 7 layer->ch_layout = (AVChannelLayout){ .order = AV_CHANNEL_ORDER_AMBISONIC, .nb_channels = output_channel_count };
584 7 layer->demixing_matrix = av_malloc_array(nb_demixing_matrix, sizeof(*layer->demixing_matrix));
585
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 7 if (!layer->demixing_matrix)
586 ✗ return AVERROR(ENOMEM);
587
588 7 layer->nb_demixing_matrix = nb_demixing_matrix;
589
590
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 119 for (int i = 0; i < layer->nb_demixing_matrix; i++)
591 112 layer->demixing_matrix[i] = av_make_q(sign_extend(avio_rb16(pb), 16), 1 << 15);
592
593
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 35 for (int i = 0; i < substream_count; i++) {
594 28 IAMFSubStream *substream = &audio_element->substreams[i];
595
596
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 28 substream->codecpar->ch_layout = coupled_substream_count-- > 0 ? (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO :
597 (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
598
599
600 28 ret = update_extradata(substream->codecpar);
601
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 28 if (ret < 0)
602 ✗ return ret;
603 }
604 }
605
606 11 return 0;
607 }
608
609 104 static int param_parse(void *s, IAMFContext *c, AVIOContext *pb,
610 unsigned int type,
611 const IAMFAudioElement *audio_element,
612 AVIAMFParamDefinition **out_param_definition)
613 {
614 104 IAMFParamDefinition *param_definition = NULL;
615 AVIAMFParamDefinition *param;
616 unsigned int parameter_id, parameter_rate, mode;
617 104 unsigned int duration = 0, constant_subblock_duration = 0, nb_subblocks = 0;
618 104 unsigned int total_duration = 0;
619 size_t param_size;
620
621 104 parameter_id = ffio_read_leb(pb);
622
623
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 158 for (int i = 0; i < c->nb_param_definitions; i++)
624
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 95 if (c->param_definitions[i]->param->parameter_id == parameter_id) {
625 41 param_definition = c->param_definitions[i];
626 41 break;
627 }
628
629 104 parameter_rate = ffio_read_leb(pb);
630 104 mode = avio_r8(pb) >> 7;
631
632
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 104 if (mode == 0) {
633 22 duration = ffio_read_leb(pb);
634
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 22 if (!duration)
635 ✗ return AVERROR_INVALIDDATA;
636
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 22 if (audio_element) {
637 22 const IAMFCodecConfig *codec_config = ff_iamf_get_codec_config(c, audio_element->codec_config_id);
638
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 22 if (duration > av_rescale(codec_config->nb_samples, codec_config->sample_rate, parameter_rate)) {
639 ✗ av_log(s, AV_LOG_ERROR, "Invalid block duration in parameter_id %u\n", parameter_id);
640 ✗ return AVERROR_INVALIDDATA;
641 }
642 }
643 22 constant_subblock_duration = ffio_read_leb(pb);
644
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 22 if (constant_subblock_duration == 0)
645 ✗ nb_subblocks = ffio_read_leb(pb);
646 else {
647
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 22 if (constant_subblock_duration > duration) {
648 ✗ av_log(s, AV_LOG_ERROR, "Invalid block duration in parameter_id %u\n", parameter_id);
649 ✗ return AVERROR_INVALIDDATA;
650 }
651 22 nb_subblocks = duration / constant_subblock_duration;
652 22 total_duration = duration;
653 }
654 }
655
656
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 104 if (nb_subblocks > duration) {
657 ✗ av_log(s, AV_LOG_ERROR, "Invalid duration or subblock count in parameter_id %u\n", parameter_id);
658 ✗ return AVERROR_INVALIDDATA;
659 }
660
661 104 param = av_iamf_param_definition_alloc(type, nb_subblocks, &param_size);
662
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 104 if (!param)
663 ✗ return AVERROR(ENOMEM);
664
665
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 126 for (int i = 0; i < nb_subblocks; i++) {
666 22 void *subblock = av_iamf_param_definition_get_subblock(param, i);
667 22 unsigned int subblock_duration = constant_subblock_duration;
668
669
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 22 if (constant_subblock_duration == 0) {
670 ✗ subblock_duration = ffio_read_leb(pb);
671 ✗ if (duration - total_duration > subblock_duration) {
672 ✗ av_log(s, AV_LOG_ERROR, "Invalid subblock durations in parameter_id %u\n", parameter_id);
673 ✗ av_free(param);
674 ✗ return AVERROR_INVALIDDATA;
675 }
676 ✗ total_duration += subblock_duration;
677
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 22 } else if (i == nb_subblocks - 1)
678 22 subblock_duration = duration - i * constant_subblock_duration;
679
680
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 22 switch (type) {
681 ✗ case AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN: {
682 ✗ AVIAMFMixGain *mix = subblock;
683 ✗ mix->subblock_duration = subblock_duration;
684 ✗ break;
685 }
686 17 case AV_IAMF_PARAMETER_DEFINITION_DEMIXING: {
687 17 AVIAMFDemixingInfo *demix = subblock;
688 17 demix->subblock_duration = subblock_duration;
689 // DefaultDemixingInfoParameterData
690
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 17 av_assert0(audio_element);
691 17 demix->dmixp_mode = avio_r8(pb) >> 5;
692 17 audio_element->element->default_w = avio_r8(pb) >> 4;
693 17 break;
694 }
695 5 case AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN: {
696 5 AVIAMFReconGain *recon = subblock;
697 5 recon->subblock_duration = subblock_duration;
698 5 break;
699 }
700 ✗ default:
701 ✗ av_free(param);
702 ✗ return AVERROR_INVALIDDATA;
703 }
704 }
705
706
3/6
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 104 if (!mode && !constant_subblock_duration && total_duration != duration) {
707 ✗ av_log(s, AV_LOG_ERROR, "Invalid subblock durations in parameter_id %u\n", parameter_id);
708 ✗ av_free(param);
709 ✗ return AVERROR_INVALIDDATA;
710 }
711
712 104 param->parameter_id = parameter_id;
713 104 param->parameter_rate = parameter_rate;
714 104 param->duration = duration;
715 104 param->constant_subblock_duration = constant_subblock_duration;
716 104 param->nb_subblocks = nb_subblocks;
717
718
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 104 if (param_definition) {
719
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 41 if (param_definition->param_size != param_size || memcmp(param_definition->param, param, param_size)) {
720 ✗ av_log(s, AV_LOG_ERROR, "Inconsistent parameters for parameter_id %u\n", parameter_id);
721 ✗ av_free(param);
722 ✗ return AVERROR_INVALIDDATA;
723 }
724 } else {
725 63 IAMFParamDefinition **tmp = av_realloc_array(c->param_definitions, c->nb_param_definitions + 1,
726 sizeof(*c->param_definitions));
727
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 63 if (!tmp) {
728 ✗ av_free(param);
729 ✗ return AVERROR(ENOMEM);
730 }
731 63 c->param_definitions = tmp;
732
733 63 param_definition = av_mallocz(sizeof(*param_definition));
734
1/2
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 63 if (!param_definition) {
735 ✗ av_free(param);
736 ✗ return AVERROR(ENOMEM);
737 }
738 63 param_definition->param = param;
739 63 param_definition->mode = !mode;
740 63 param_definition->param_size = param_size;
741 63 param_definition->audio_element = audio_element;
742
743 63 c->param_definitions[c->nb_param_definitions++] = param_definition;
744 }
745
746
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 104 av_assert0(out_param_definition);
747 104 *out_param_definition = param;
748
749 104 return 0;
750 }
751
752 38 static int audio_element_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
753 {
754 const IAMFCodecConfig *codec_config;
755 AVIAMFAudioElement *element;
756 38 IAMFAudioElement **tmp, *audio_element = NULL;
757 FFIOContext b;
758 AVIOContext *pbc;
759 uint8_t *buf;
760 unsigned audio_element_id, nb_substreams, codec_config_id, num_parameters;
761 int audio_element_type, ret;
762
763 38 buf = av_malloc(len);
764
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 38 if (!buf)
765 ✗ return AVERROR(ENOMEM);
766
767 38 ret = ffio_read_size(pb, buf, len);
768
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 38 if (ret < 0)
769 ✗ goto fail;
770
771 38 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
772 38 pbc = &b.pub;
773
774 38 audio_element_id = ffio_read_leb(pbc);
775
776
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 40 for (int i = 0; i < c->nb_audio_elements; i++)
777
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 2 if (c->audio_elements[i]->audio_element_id == audio_element_id) {
778 ✗ av_log(s, AV_LOG_ERROR, "Duplicate audio_element_id %d\n", audio_element_id);
779 ✗ ret = AVERROR_INVALIDDATA;
780 ✗ goto fail;
781 }
782
783 38 audio_element_type = avio_r8(pbc) >> 5;
784
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 38 if (audio_element_type > AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE) {
785 ✗ av_log(s, AV_LOG_DEBUG, "Unknown audio_element_type referenced in an audio element. Ignoring\n");
786 ✗ ret = 0;
787 ✗ goto fail;
788 }
789
790 38 codec_config_id = ffio_read_leb(pbc);
791
792 38 codec_config = ff_iamf_get_codec_config(c, codec_config_id);
793
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 38 if (!codec_config) {
794 ✗ av_log(s, AV_LOG_ERROR, "Non existent codec config id %d referenced in an audio element\n", codec_config_id);
795 ✗ ret = AVERROR_INVALIDDATA;
796 ✗ goto fail;
797 }
798
799
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 38 if (codec_config->codec_id == AV_CODEC_ID_NONE) {
800 ✗ av_log(s, AV_LOG_DEBUG, "Unknown codec id referenced in an audio element. Ignoring\n");
801 ✗ ret = 0;
802 ✗ goto fail;
803 }
804
805 38 tmp = av_realloc_array(c->audio_elements, c->nb_audio_elements + 1, sizeof(*c->audio_elements));
806
1/2
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✓ Branch 1 taken 38 times.
 38 if (!tmp) {
807 ✗ ret = AVERROR(ENOMEM);
808 ✗ goto fail;
809 }
810 38 c->audio_elements = tmp;
811
812 38 audio_element = av_mallocz(sizeof(*audio_element));
813
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 38 if (!audio_element) {
814 ✗ ret = AVERROR(ENOMEM);
815 ✗ goto fail;
816 }
817
818 38 nb_substreams = ffio_read_leb(pbc);
819 38 audio_element->codec_config_id = codec_config_id;
820 38 audio_element->audio_element_id = audio_element_id;
821 38 audio_element->substreams = av_calloc(nb_substreams, sizeof(*audio_element->substreams));
822
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 38 if (!audio_element->substreams) {
823 ✗ ret = AVERROR(ENOMEM);
824 ✗ goto fail;
825 }
826 38 audio_element->nb_substreams = nb_substreams;
827
828 38 element = audio_element->element = av_iamf_audio_element_alloc();
829
1/2
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 38 if (!element) {
830 ✗ ret = AVERROR(ENOMEM);
831 ✗ goto fail;
832 }
833 38 audio_element->celement = element;
834
835 38 element->audio_element_type = audio_element_type;
836
837
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 208 for (int i = 0; i < audio_element->nb_substreams; i++) {
838 170 IAMFSubStream *substream = &audio_element->substreams[i];
839
840 170 substream->codecpar = avcodec_parameters_alloc();
841
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 170 if (!substream->codecpar) {
842 ✗ ret = AVERROR(ENOMEM);
843 ✗ goto fail;
844 }
845
846 170 substream->audio_substream_id = ffio_read_leb(pbc);
847
848 170 substream->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
849 170 substream->codecpar->codec_id = codec_config->codec_id;
850 170 substream->codecpar->frame_size = codec_config->nb_samples;
851 170 substream->codecpar->sample_rate = codec_config->sample_rate;
852 170 substream->codecpar->seek_preroll = -codec_config->audio_roll_distance * codec_config->nb_samples;
853
854
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✗ Branch 1 not taken.
 170 switch(substream->codecpar->codec_id) {
855 170 case AV_CODEC_ID_AAC:
856 case AV_CODEC_ID_FLAC:
857 case AV_CODEC_ID_OPUS:
858 170 substream->codecpar->extradata = av_malloc(codec_config->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
859
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 170 times.
 170 if (!substream->codecpar->extradata) {
860 ✗ ret = AVERROR(ENOMEM);
861 ✗ goto fail;
862 }
863 170 memcpy(substream->codecpar->extradata, codec_config->extradata, codec_config->extradata_size);
864 170 memset(substream->codecpar->extradata + codec_config->extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
865 170 substream->codecpar->extradata_size = codec_config->extradata_size;
866 170 break;
867 }
868 }
869
870 38 num_parameters = ffio_read_leb(pbc);
871
1/4
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✓ Branch 1 taken 38 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 38 if (num_parameters > 2 && audio_element_type == 0) {
872 ✗ av_log(s, AV_LOG_ERROR, "Audio Element parameter count %u is invalid"
873 " for Channel representations\n", num_parameters);
874 ✗ ret = AVERROR_INVALIDDATA;
875 ✗ goto fail;
876 }
877
3/4
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✓ Branch 1 taken 21 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 17 times.
 38 if (num_parameters && audio_element_type != 0) {
878 ✗ av_log(s, AV_LOG_ERROR, "Audio Element parameter count %u is invalid"
879 " for Scene representations\n", num_parameters);
880 ✗ ret = AVERROR_INVALIDDATA;
881 ✗ goto fail;
882 }
883
884
2/2
✓ Branch 0 taken 22 times.
✓ Branch 1 taken 38 times.
 60 for (int i = 0; i < num_parameters; i++) {
885 unsigned type;
886
887 22 type = ffio_read_leb(pbc);
888
1/2
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✓ Branch 1 taken 22 times.
 22 if (type == AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN)
889 ✗ ret = AVERROR_INVALIDDATA;
890
2/2
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✓ Branch 1 taken 5 times.
 22 else if (type == AV_IAMF_PARAMETER_DEFINITION_DEMIXING) {
891
1/2
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✓ Branch 1 taken 17 times.
 17 if (element->demixing_info) {
892 ✗ ret = AVERROR_INVALIDDATA;
893 ✗ goto fail;
894 }
895 17 ret = param_parse(s, c, pbc, type, audio_element, &element->demixing_info);
896
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 5 } else if (type == AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN) {
897
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
 5 if (element->recon_gain_info) {
898 ✗ ret = AVERROR_INVALIDDATA;
899 ✗ goto fail;
900 }
901 5 ret = param_parse(s, c, pbc, type, audio_element, &element->recon_gain_info);
902 } else {
903 ✗ unsigned param_definition_size = ffio_read_leb(pbc);
904 ✗ avio_skip(pbc, param_definition_size);
905 }
906
1/2
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✓ Branch 1 taken 22 times.
 22 if (ret < 0)
907 ✗ goto fail;
908 }
909
910
2/2
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✓ Branch 1 taken 11 times.
 38 if (audio_element_type == AV_IAMF_AUDIO_ELEMENT_TYPE_CHANNEL) {
911 27 ret = scalable_channel_layout_config(s, pbc, audio_element, codec_config);
912
1/2
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✓ Branch 1 taken 27 times.
 27 if (ret < 0)
913 ✗ goto fail;
914
1/2
✓ Branch 0 taken 11 times.
✗ Branch 1 not taken.
 11 } else if (audio_element_type == AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE) {
915 11 ret = ambisonics_config(s, pbc, audio_element, codec_config);
916
1/2
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✓ Branch 1 taken 11 times.
 11 if (ret < 0)
917 ✗ goto fail;
918 } else {
919 ✗ av_unreachable("audio_element_type should have been checked above");
920 }
921
922 38 c->audio_elements[c->nb_audio_elements++] = audio_element;
923
924 38 len -= avio_tell(pbc);
925
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✗ Branch 0 not taken.
✓ Branch 1 taken 38 times.
 38 if (len)
926 ✗ av_log(s, AV_LOG_WARNING, "Underread in audio_element_obu. %d bytes left at the end\n", len);
927
928 38 ret = 0;
929 38 fail:
930 38 av_free(buf);
931
1/2
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✓ Branch 1 taken 38 times.
 38 if (ret < 0)
932 ✗ ff_iamf_free_audio_element(&audio_element);
933 38 return ret;
934 }
935
936 114 static int label_string(AVIOContext *pb, char **label)
937 {
938 uint8_t buf[128];
939
940 114 avio_get_str(pb, sizeof(buf), buf, sizeof(buf));
941
942
1/2
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✓ Branch 1 taken 114 times.
 114 if (pb->error)
943 ✗ return pb->error;
944
1/2
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✓ Branch 1 taken 114 times.
 114 if (pb->eof_reached)
945 ✗ return AVERROR_INVALIDDATA;
946 114 *label = av_strdup(buf);
947
1/2
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✓ Branch 1 taken 114 times.
 114 if (!*label)
948 ✗ return AVERROR(ENOMEM);
949
950 114 return 0;
951 }
952
953 36 static int mix_presentation_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
954 {
955 AVIAMFMixPresentation *mix;
956 36 IAMFMixPresentation **tmp, *mix_presentation = NULL;
957 FFIOContext b;
958 AVIOContext *pbc;
959 uint8_t *buf;
960 unsigned nb_submixes, mix_presentation_id;
961 int ret;
962
963 36 buf = av_malloc(len);
964
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✓ Branch 1 taken 36 times.
 36 if (!buf)
965 ✗ return AVERROR(ENOMEM);
966
967 36 ret = ffio_read_size(pb, buf, len);
968
1/2
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✓ Branch 1 taken 36 times.
 36 if (ret < 0)
969 ✗ goto fail;
970
971 36 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
972 36 pbc = &b.pub;
973
974 36 mix_presentation_id = ffio_read_leb(pbc);
975
976
1/2
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✓ Branch 1 taken 36 times.
 36 for (int i = 0; i < c->nb_mix_presentations; i++)
977 ✗ if (c->mix_presentations[i]->mix_presentation_id == mix_presentation_id) {
978 ✗ av_log(s, AV_LOG_ERROR, "Duplicate mix_presentation_id %d\n", mix_presentation_id);
979 ✗ ret = AVERROR_INVALIDDATA;
980 ✗ goto fail;
981 }
982
983 36 tmp = av_realloc_array(c->mix_presentations, c->nb_mix_presentations + 1, sizeof(*c->mix_presentations));
984
1/2
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✓ Branch 1 taken 36 times.
 36 if (!tmp) {
985 ✗ ret = AVERROR(ENOMEM);
986 ✗ goto fail;
987 }
988 36 c->mix_presentations = tmp;
989
990 36 mix_presentation = av_mallocz(sizeof(*mix_presentation));
991
1/2
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✓ Branch 1 taken 36 times.
 36 if (!mix_presentation) {
992 ✗ ret = AVERROR(ENOMEM);
993 ✗ goto fail;
994 }
995
996 36 mix_presentation->mix_presentation_id = mix_presentation_id;
997 36 mix = mix_presentation->mix = av_iamf_mix_presentation_alloc();
998
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (!mix) {
999 ✗ ret = AVERROR(ENOMEM);
1000 ✗ goto fail;
1001 }
1002 36 mix_presentation->cmix = mix;
1003
1004 36 mix_presentation->count_label = ffio_read_leb(pbc);
1005 36 mix_presentation->language_label = av_calloc(mix_presentation->count_label,
1006 sizeof(*mix_presentation->language_label));
1007
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (!mix_presentation->language_label) {
1008 ✗ mix_presentation->count_label = 0;
1009 ✗ ret = AVERROR(ENOMEM);
1010 ✗ goto fail;
1011 }
1012
1013
2/2
✓ Branch 0 taken 36 times.
✓ Branch 1 taken 36 times.
 72 for (int i = 0; i < mix_presentation->count_label; i++) {
1014 36 ret = label_string(pbc, &mix_presentation->language_label[i]);
1015
1/2
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✓ Branch 1 taken 36 times.
 36 if (ret < 0)
1016 ✗ goto fail;
1017 }
1018
1019
2/2
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✓ Branch 1 taken 36 times.
 72 for (int i = 0; i < mix_presentation->count_label; i++) {
1020 36 char *annotation = NULL;
1021 36 ret = label_string(pbc, &annotation);
1022
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (ret < 0)
1023 ✗ goto fail;
1024 36 ret = av_dict_set(&mix->annotations, mix_presentation->language_label[i], annotation,
1025 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1026
1/2
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✓ Branch 1 taken 36 times.
 36 if (ret < 0)
1027 ✗ goto fail;
1028 }
1029
1030 36 nb_submixes = ffio_read_leb(pbc);
1031
2/2
✓ Branch 0 taken 40 times.
✓ Branch 1 taken 36 times.
 76 for (int i = 0; i < nb_submixes; i++) {
1032 AVIAMFSubmix *sub_mix;
1033 unsigned nb_elements, nb_layouts;
1034
1035 40 sub_mix = av_iamf_mix_presentation_add_submix(mix);
1036
1/2
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✓ Branch 1 taken 40 times.
 40 if (!sub_mix) {
1037 ✗ ret = AVERROR(ENOMEM);
1038 ✗ goto fail;
1039 }
1040
1041 40 nb_elements = ffio_read_leb(pbc);
1042
2/2
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 40 times.
 82 for (int j = 0; j < nb_elements; j++) {
1043 AVIAMFSubmixElement *submix_element;
1044 42 IAMFAudioElement *audio_element = NULL;
1045 unsigned int rendering_config_extension_size;
1046
1047 42 submix_element = av_iamf_submix_add_element(sub_mix);
1048
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
 42 if (!submix_element) {
1049 ✗ ret = AVERROR(ENOMEM);
1050 ✗ goto fail;
1051 }
1052
1053 42 submix_element->audio_element_id = ffio_read_leb(pbc);
1054
1055
1/2
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✗ Branch 1 not taken.
 44 for (int k = 0; k < c->nb_audio_elements; k++)
1056
2/2
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✓ Branch 1 taken 2 times.
 44 if (c->audio_elements[k]->audio_element_id == submix_element->audio_element_id) {
1057 42 audio_element = c->audio_elements[k];
1058 42 break;
1059 }
1060
1061
1/2
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✓ Branch 1 taken 42 times.
 42 if (!audio_element) {
1062 ✗ av_log(s, AV_LOG_ERROR, "Invalid Audio Element with id %u referenced by Mix Parameters %u\n",
1063 submix_element->audio_element_id, mix_presentation_id);
1064 ✗ ret = AVERROR_INVALIDDATA;
1065 ✗ goto fail;
1066 }
1067
1068
2/2
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 42 times.
 84 for (int k = 0; k < mix_presentation->count_label; k++) {
1069 42 char *annotation = NULL;
1070 42 ret = label_string(pbc, &annotation);
1071
1/2
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✓ Branch 1 taken 42 times.
 42 if (ret < 0)
1072 ✗ goto fail;
1073 42 ret = av_dict_set(&submix_element->annotations, mix_presentation->language_label[k], annotation,
1074 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1075
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
 42 if (ret < 0)
1076 ✗ goto fail;
1077 }
1078
1079 42 submix_element->headphones_rendering_mode = avio_r8(pbc) >> 6;
1080
1081 42 rendering_config_extension_size = ffio_read_leb(pbc);
1082 42 avio_skip(pbc, rendering_config_extension_size);
1083
1084 42 ret = param_parse(s, c, pbc, AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN,
1085 audio_element,
1086 &submix_element->element_mix_config);
1087
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 42 times.
 42 if (ret < 0)
1088 ✗ goto fail;
1089 42 submix_element->default_mix_gain = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1090 }
1091
1092 40 ret = param_parse(s, c, pbc, AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN, NULL, &sub_mix->output_mix_config);
1093
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 40 times.
 40 if (ret < 0)
1094 ✗ goto fail;
1095 40 sub_mix->default_mix_gain = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1096
1097 40 nb_layouts = ffio_read_leb(pbc);
1098
2/2
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 123 for (int j = 0; j < nb_layouts; j++) {
1099 AVIAMFSubmixLayout *submix_layout;
1100 int info_type;
1101 83 int byte = avio_r8(pbc);
1102
1103 83 submix_layout = av_iamf_submix_add_layout(sub_mix);
1104
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 if (!submix_layout) {
1105 ✗ ret = AVERROR(ENOMEM);
1106 ✗ goto fail;
1107 }
1108
1109 83 submix_layout->layout_type = byte >> 6;
1110
1/2
✓ Branch 0 taken 83 times.
✗ Branch 1 not taken.
 83 if (submix_layout->layout_type < AV_IAMF_SUBMIX_LAYOUT_TYPE_LOUDSPEAKERS ||
1111
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 submix_layout->layout_type > AV_IAMF_SUBMIX_LAYOUT_TYPE_BINAURAL) {
1112 ✗ av_log(s, AV_LOG_ERROR, "Invalid Layout type %u in a submix from Mix Presentation %u\n",
1113 ✗ submix_layout->layout_type, mix_presentation_id);
1114 ✗ ret = AVERROR_INVALIDDATA;
1115 ✗ goto fail;
1116 }
1117
2/2
✓ Branch 0 taken 79 times.
✓ Branch 1 taken 4 times.
 83 if (submix_layout->layout_type == 2) {
1118 int sound_system;
1119 79 sound_system = (byte >> 2) & 0xF;
1120
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 79 times.
 79 if (sound_system >= FF_ARRAY_ELEMS(ff_iamf_sound_system_map)) {
1121 ✗ ret = AVERROR_INVALIDDATA;
1122 ✗ goto fail;
1123 }
1124 79 av_channel_layout_copy(&submix_layout->sound_system, &ff_iamf_sound_system_map[sound_system].layout);
1125 } else
1126 4 submix_layout->sound_system = (AVChannelLayout)AV_CHANNEL_LAYOUT_BINAURAL;
1127
1128 83 info_type = avio_r8(pbc);
1129 83 submix_layout->integrated_loudness = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1130 83 submix_layout->digital_peak = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1131
1132
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 if (info_type & 1)
1133 ✗ submix_layout->true_peak = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1134
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 if (info_type & 2) {
1135 ✗ unsigned int num_anchored_loudness = avio_r8(pbc);
1136
1137 ✗ for (int k = 0; k < num_anchored_loudness; k++) {
1138 ✗ unsigned int anchor_element = avio_r8(pbc);
1139 ✗ AVRational anchored_loudness = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
1140 ✗ if (anchor_element == IAMF_ANCHOR_ELEMENT_DIALOGUE)
1141 ✗ submix_layout->dialogue_anchored_loudness = anchored_loudness;
1142 ✗ else if (anchor_element <= IAMF_ANCHOR_ELEMENT_ALBUM)
1143 ✗ submix_layout->album_anchored_loudness = anchored_loudness;
1144 else
1145 ✗ av_log(s, AV_LOG_DEBUG, "Unknown anchor_element. Ignoring\n");
1146 }
1147 }
1148
1149
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 if (info_type & 0xFC) {
1150 ✗ unsigned int info_type_size = ffio_read_leb(pbc);
1151 ✗ avio_skip(pbc, info_type_size);
1152 }
1153 }
1154 }
1155
1156 36 c->mix_presentations[c->nb_mix_presentations++] = mix_presentation;
1157
1158 36 len -= avio_tell(pbc);
1159
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (len)
1160 ✗ av_log(s, AV_LOG_WARNING, "Underread in mix_presentation_obu. %d bytes left at the end\n", len);
1161
1162 36 ret = 0;
1163 36 fail:
1164 36 av_free(buf);
1165
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (ret < 0)
1166 ✗ ff_iamf_free_mix_presentation(&mix_presentation);
1167 36 return ret;
1168 }
1169
1170 9727 int ff_iamf_parse_obu_header(const uint8_t *buf, int buf_size,
1171 unsigned *obu_size, int *start_pos, enum IAMF_OBU_Type *type,
1172 unsigned *skip_samples, unsigned *discard_padding)
1173 {
1174 GetBitContext gb;
1175 int ret, extension_flag, trimming, start;
1176 9727 unsigned skip = 0, discard = 0;
1177 unsigned size;
1178
1179 9727 ret = init_get_bits8(&gb, buf, FFMIN(buf_size, MAX_IAMF_OBU_HEADER_SIZE));
1180
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9727 times.
 9727 if (ret < 0)
1181 ✗ return ret;
1182
1183 9727 *type = get_bits(&gb, 5);
1184 9727 /*redundant =*/ get_bits1(&gb);
1185 9727 trimming = get_bits1(&gb);
1186 9727 extension_flag = get_bits1(&gb);
1187
1188 9727 *obu_size = get_leb(&gb);
1189
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 9718 times.
 9727 if (*obu_size > INT_MAX)
1190 9 return AVERROR_INVALIDDATA;
1191
1192 9718 start = get_bits_count(&gb) / 8;
1193
1194
2/2
✓ Branch 0 taken 2412 times.
✓ Branch 1 taken 7306 times.
 9718 if (trimming) {
1195 2412 discard = get_leb(&gb); // num_samples_to_trim_at_end
1196 2412 skip = get_leb(&gb); // num_samples_to_trim_at_start
1197 }
1198
1199
2/2
✓ Branch 0 taken 2005 times.
✓ Branch 1 taken 7713 times.
 9718 if (skip_samples)
1200 2005 *skip_samples = skip;
1201
2/2
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✓ Branch 1 taken 7713 times.
 9718 if (discard_padding)
1202 2005 *discard_padding = discard;
1203
1204
2/2
✓ Branch 0 taken 760 times.
✓ Branch 1 taken 8958 times.
 9718 if (extension_flag) {
1205 unsigned int extension_bytes;
1206 760 extension_bytes = get_leb(&gb);
1207
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 742 times.
 760 if (extension_bytes > INT_MAX / 8)
1208 18 return AVERROR_INVALIDDATA;
1209 742 skip_bits_long(&gb, extension_bytes * 8);
1210 }
1211
1212
2/2
✓ Branch 1 taken 547 times.
✓ Branch 2 taken 9153 times.
 9700 if (get_bits_left(&gb) < 0)
1213 547 return AVERROR_INVALIDDATA;
1214
1215 9153 size = *obu_size + start;
1216
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9153 times.
 9153 if (size > INT_MAX)
1217 ✗ return AVERROR_INVALIDDATA;
1218
1219 9153 *obu_size -= get_bits_count(&gb) / 8 - start;
1220 9153 *start_pos = size - *obu_size;
1221
1222 9153 return size;
1223 }
1224
1225 36 int ff_iamfdec_read_descriptors(IAMFContext *c, AVIOContext *pb,
1226 int max_size, void *log_ctx)
1227 {
1228 uint8_t header[MAX_IAMF_OBU_HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
1229 int ret;
1230
1231 134 while (1) {
1232 unsigned obu_size;
1233 enum IAMF_OBU_Type type;
1234 int start_pos, len, size;
1235
1236
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 170 times.
 170 if ((ret = ffio_ensure_seekback(pb, FFMIN(MAX_IAMF_OBU_HEADER_SIZE, max_size))) < 0)
1237 ✗ return ret;
1238 170 size = avio_read(pb, header, FFMIN(MAX_IAMF_OBU_HEADER_SIZE, max_size));
1239
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 170 times.
 170 if (size < 0)
1240 ✗ return size;
1241 170 memset(header + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1242
1243 170 len = ff_iamf_parse_obu_header(header, size, &obu_size, &start_pos, &type, NULL, NULL);
1244
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 170 times.
 170 if (len < 0 || obu_size > max_size) {
1245 ✗ av_log(log_ctx, AV_LOG_ERROR, "Failed to read obu header\n");
1246 ✗ avio_seek(pb, -size, SEEK_CUR);
1247 ✗ return len;
1248 }
1249
1250
4/4
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✓ Branch 1 taken 110 times.
✓ Branch 2 taken 24 times.
✓ Branch 3 taken 36 times.
 170 if (type >= IAMF_OBU_IA_PARAMETER_BLOCK && type < IAMF_OBU_IA_SEQUENCE_HEADER) {
1251 24 avio_seek(pb, -size, SEEK_CUR);
1252 24 break;
1253 }
1254
1255 146 avio_seek(pb, -(size - start_pos), SEEK_CUR);
1256
4/4
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✓ Branch 2 taken 36 times.
✓ Branch 3 taken 36 times.
 146 switch (type) {
1257 36 case IAMF_OBU_IA_CODEC_CONFIG:
1258 36 ret = codec_config_obu(log_ctx, c, pb, obu_size);
1259 36 break;
1260 38 case IAMF_OBU_IA_AUDIO_ELEMENT:
1261 38 ret = audio_element_obu(log_ctx, c, pb, obu_size);
1262 38 break;
1263 36 case IAMF_OBU_IA_MIX_PRESENTATION:
1264 36 ret = mix_presentation_obu(log_ctx, c, pb, obu_size);
1265 36 break;
1266 36 default: {
1267 36 int64_t offset = avio_skip(pb, obu_size);
1268
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (offset < 0)
1269 ✗ ret = offset;
1270 36 break;
1271 }
1272 }
1273
1/2
✗ Branch 0 not taken.
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 146 if (ret < 0) {
1274 ✗ av_log(log_ctx, AV_LOG_ERROR, "Failed to read obu type %d\n", type);
1275 ✗ return ret;
1276 }
1277 146 max_size -= obu_size + start_pos;
1278
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 146 if (max_size < 0)
1279 ✗ return AVERROR_INVALIDDATA;
1280
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 146 if (!max_size)
1281 12 break;
1282 }
1283
1284 36 return 0;
1285 }
1286