FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/iamf_parse.c
Date: 2025-01-20 09:27:23
Exec Total Coverage
Lines: 497 708 70.2%
Functions: 13 14 92.9%
Branches: 220 385 57.1%
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 5 static int opus_decoder_config(IAMFCodecConfig *codec_config,
37 AVIOContext *pb, int len)
38 {
39 5 int ret, left = len - avio_tell(pb);
40
41
2/4
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 5 times.
 5 if (left < 11 || codec_config->audio_roll_distance >= 0)
42 ✗ return AVERROR_INVALIDDATA;
43
44 5 codec_config->extradata = av_malloc(left + 8);
45
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
 5 if (!codec_config->extradata)
46 ✗ return AVERROR(ENOMEM);
47
48 5 AV_WB32A(codec_config->extradata, MKBETAG('O','p','u','s'));
49 5 AV_WB32A(codec_config->extradata + 4, MKBETAG('H','e','a','d'));
50 5 ret = ffio_read_size(pb, codec_config->extradata + 8, left);
51
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
 5 if (ret < 0)
52 ✗ return ret;
53
54 5 codec_config->extradata_size = left + 8;
55 5 codec_config->sample_rate = 48000;
56
57 5 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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (codec_config->audio_roll_distance >= 0)
68 ✗ return AVERROR_INVALIDDATA;
69
70 2 ff_mp4_read_descr(logctx, pb, &tag);
71
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (tag != MP4DecConfigDescrTag)
72 ✗ return AVERROR_INVALIDDATA;
73
74 2 object_type_id = avio_r8(pb);
75
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (object_type_id != 0x40)
76 ✗ return AVERROR_INVALIDDATA;
77
78 2 stream_type = avio_r8(pb);
79
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
 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
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
 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
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
 2 if (tag != MP4DecSpecificDescrTag ||
92
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
 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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (!codec_config->extradata)
98 ✗ return AVERROR(ENOMEM);
99
100 2 ret = ffio_read_size(pb, codec_config->extradata, left);
101
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 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 20 static int flac_decoder_config(IAMFCodecConfig *codec_config,
118 AVIOContext *pb, int len)
119 {
120 int ret, left;
121
122
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (codec_config->audio_roll_distance)
123 ✗ return AVERROR_INVALIDDATA;
124
125 20 avio_skip(pb, 4); // METADATA_BLOCK_HEADER
126
127 20 left = len - avio_tell(pb);
128
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (left < FLAC_STREAMINFO_SIZE)
129 ✗ return AVERROR_INVALIDDATA;
130
131 20 codec_config->extradata = av_malloc(left);
132
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (!codec_config->extradata)
133 ✗ return AVERROR(ENOMEM);
134
135 20 ret = ffio_read_size(pb, codec_config->extradata, left);
136
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (ret < 0)
137 ✗ return ret;
138
139 20 codec_config->extradata_size = left;
140 20 codec_config->sample_rate = AV_RB24(codec_config->extradata + 10) >> 4;
141
142 20 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 27 static int codec_config_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
167 {
168 27 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 27 buf = av_malloc(len);
178
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!buf)
179 ✗ return AVERROR(ENOMEM);
180
181 27 ret = ffio_read_size(pb, buf, len);
182
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
183 ✗ goto fail;
184
185 27 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
186 27 pbc = &b.pub;
187
188 27 codec_config_id = ffio_read_leb(pbc);
189 27 codec_id = avio_rb32(pbc);
190 27 nb_samples = ffio_read_leb(pbc);
191 27 audio_roll_distance = avio_rb16(pbc);
192
193
3/4
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 20 times.
✗ Branch 3 not taken.
 27 switch(codec_id) {
194 5 case MKBETAG('O','p','u','s'):
195 5 avcodec_id = AV_CODEC_ID_OPUS;
196 5 break;
197 2 case MKBETAG('m','p','4','a'):
198 2 avcodec_id = AV_CODEC_ID_AAC;
199 2 break;
200 20 case MKBETAG('f','L','a','C'):
201 20 avcodec_id = AV_CODEC_ID_FLAC;
202 20 break;
203 ✗ default:
204 ✗ avcodec_id = AV_CODEC_ID_NONE;
205 ✗ break;
206 }
207
208
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 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 27 tmp = av_realloc_array(c->codec_configs, c->nb_codec_configs + 1, sizeof(*c->codec_configs));
215
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!tmp) {
216 ✗ ret = AVERROR(ENOMEM);
217 ✗ goto fail;
218 }
219 27 c->codec_configs = tmp;
220
221 27 codec_config = av_mallocz(sizeof(*codec_config));
222
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!codec_config) {
223 ✗ ret = AVERROR(ENOMEM);
224 ✗ goto fail;
225 }
226
227 27 codec_config->codec_config_id = codec_config_id;
228 27 codec_config->codec_id = avcodec_id;
229 27 codec_config->nb_samples = nb_samples;
230 27 codec_config->audio_roll_distance = audio_roll_distance;
231
232
3/5
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 20 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 27 switch(codec_id) {
233 5 case MKBETAG('O','p','u','s'):
234 5 ret = opus_decoder_config(codec_config, pbc, len);
235 5 break;
236 2 case MKBETAG('m','p','4','a'):
237 2 ret = aac_decoder_config(codec_config, pbc, len, s);
238 2 break;
239 20 case MKBETAG('f','L','a','C'):
240 20 ret = flac_decoder_config(codec_config, pbc, len);
241 20 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
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
249 ✗ goto fail;
250
251
2/4
✓ Branch 0 taken 27 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 27 times.
✗ Branch 3 not taken.
 27 if ((codec_config->nb_samples > INT_MAX) || codec_config->nb_samples <= 0 ||
252
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 (-codec_config->audio_roll_distance > INT_MAX / codec_config->nb_samples)) {
253 ✗ ret = AVERROR_INVALIDDATA;
254 ✗ goto fail;
255 }
256
257 27 c->codec_configs[c->nb_codec_configs++] = codec_config;
258
259 27 len -= avio_tell(pbc);
260
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (len)
261 ✗ av_log(s, AV_LOG_WARNING, "Underread in codec_config_obu. %d bytes left at the end\n", len);
262
263 27 ret = 0;
264 27 fail:
265 27 av_free(buf);
266
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0) {
267 ✗ if (codec_config)
268 ✗ av_free(codec_config->extradata);
269 ✗ av_free(codec_config);
270 }
271 27 return ret;
272 }
273
274 128 static int update_extradata(AVCodecParameters *codecpar)
275 {
276 GetBitContext gb;
277 PutBitContext pb;
278 int ret;
279
280
3/4
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 106 times.
✗ Branch 3 not taken.
 128 switch(codecpar->codec_id) {
281 20 case AV_CODEC_ID_OPUS:
282 20 AV_WB8(codecpar->extradata + 9, codecpar->ch_layout.nb_channels);
283 20 AV_WL16A(codecpar->extradata + 10, AV_RB16A(codecpar->extradata + 10)); // Byte swap pre-skip
284 20 AV_WL32A(codecpar->extradata + 12, AV_RB32A(codecpar->extradata + 12)); // Byte swap sample rate
285 20 AV_WL16A(codecpar->extradata + 16, AV_RB16A(codecpar->extradata + 16)); // Byte swap Output Gain
286 20 break;
287 2 case AV_CODEC_ID_AAC: {
288 uint8_t buf[5];
289
290 2 init_put_bits(&pb, buf, sizeof(buf));
291 2 ret = init_get_bits8(&gb, codecpar->extradata, codecpar->extradata_size);
292
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (ret < 0)
293 ✗ return ret;
294
295 2 ret = get_bits(&gb, 5);
296 2 put_bits(&pb, 5, ret);
297
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (ret == AOT_ESCAPE) // violates section 3.11.2, but better check for it
298 ✗ put_bits(&pb, 6, get_bits(&gb, 6));
299 2 ret = get_bits(&gb, 4);
300 2 put_bits(&pb, 4, ret);
301
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (ret == 0x0f)
302 ✗ put_bits(&pb, 24, get_bits(&gb, 24));
303
304 2 skip_bits(&gb, 4);
305 2 put_bits(&pb, 4, codecpar->ch_layout.nb_channels); // set channel config
306 2 ret = put_bits_left(&pb);
307 2 put_bits(&pb, ret, get_bits_long(&gb, ret));
308 2 flush_put_bits(&pb);
309
310 2 memcpy(codecpar->extradata, buf, put_bytes_output(&pb));
311 2 break;
312 }
313 106 case AV_CODEC_ID_FLAC: {
314 uint8_t buf[13];
315
316 106 init_put_bits(&pb, buf, sizeof(buf));
317 106 ret = init_get_bits8(&gb, codecpar->extradata, codecpar->extradata_size);
318
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 106 times.
 106 if (ret < 0)
319 ✗ return ret;
320
321 106 put_bits32(&pb, get_bits_long(&gb, 32)); // min/max blocksize
322 106 put_bits64(&pb, 48, get_bits64(&gb, 48)); // min/max framesize
323 106 put_bits(&pb, 20, get_bits(&gb, 20)); // samplerate
324 106 skip_bits(&gb, 3);
325 106 put_bits(&pb, 3, codecpar->ch_layout.nb_channels - 1);
326 106 ret = put_bits_left(&pb);
327 106 put_bits(&pb, ret, get_bits(&gb, ret));
328 106 flush_put_bits(&pb);
329
330 106 memcpy(codecpar->extradata, buf, sizeof(buf));
331 106 break;
332 }
333 }
334
335 128 return 0;
336 }
337
338 25 static int scalable_channel_layout_config(void *s, AVIOContext *pb,
339 IAMFAudioElement *audio_element,
340 const IAMFCodecConfig *codec_config)
341 {
342 25 int nb_layers, k = 0;
343
344 25 nb_layers = avio_r8(pb) >> 5; // get_bits(&gb, 3);
345 // skip_bits(&gb, 5); //reserved
346
347
2/4
✓ Branch 0 taken 25 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 25 times.
 25 if (nb_layers > 6 || nb_layers == 0)
348 ✗ return AVERROR_INVALIDDATA;
349
350 25 audio_element->layers = av_calloc(nb_layers, sizeof(*audio_element->layers));
351
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
 25 if (!audio_element->layers)
352 ✗ return AVERROR(ENOMEM);
353
354 25 audio_element->nb_layers = nb_layers;
355
2/2
✓ Branch 0 taken 60 times.
✓ Branch 1 taken 25 times.
 85 for (int i = 0; i < nb_layers; i++) {
356 AVIAMFLayer *layer;
357 int loudspeaker_layout, output_gain_is_present_flag;
358 int substream_count, coupled_substream_count;
359 60 int expanded_loudspeaker_layout = -1;
360 60 int ret, byte = avio_r8(pb);
361
362 60 layer = av_iamf_audio_element_add_layer(audio_element->element);
363
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 60 times.
 60 if (!layer)
364 ✗ return AVERROR(ENOMEM);
365
366 60 loudspeaker_layout = byte >> 4; // get_bits(&gb, 4);
367 60 output_gain_is_present_flag = (byte >> 3) & 1; //get_bits1(&gb);
368
2/2
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 55 times.
 60 if ((byte >> 2) & 1)
369 5 layer->flags |= AV_IAMF_LAYER_FLAG_RECON_GAIN;
370 60 substream_count = avio_r8(pb);
371 60 coupled_substream_count = avio_r8(pb);
372
373
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 60 times.
 60 if (substream_count + k > audio_element->nb_substreams)
374 ✗ return AVERROR_INVALIDDATA;
375
376 60 audio_element->layers[i].substream_count = substream_count;
377 60 audio_element->layers[i].coupled_substream_count = coupled_substream_count;
378
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 60 times.
 60 if (output_gain_is_present_flag) {
379 ✗ layer->output_gain_flags = avio_r8(pb) >> 2; // get_bits(&gb, 6);
380 ✗ layer->output_gain = av_make_q(sign_extend(avio_rb16(pb), 16), 1 << 8);
381 }
382
383
4/4
✓ Branch 0 taken 25 times.
✓ Branch 1 taken 35 times.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 23 times.
 60 if (!i && loudspeaker_layout == 15)
384 2 expanded_loudspeaker_layout = avio_r8(pb);
385
3/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 58 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
 60 if (expanded_loudspeaker_layout > 0 && expanded_loudspeaker_layout < 13)
386 2 av_channel_layout_copy(&layer->ch_layout, &ff_iamf_expanded_scalable_ch_layouts[expanded_loudspeaker_layout]);
387
1/2
✓ Branch 0 taken 58 times.
✗ Branch 1 not taken.
 58 else if (loudspeaker_layout < 10)
388 58 av_channel_layout_copy(&layer->ch_layout, &ff_iamf_scalable_ch_layouts[loudspeaker_layout]);
389 else
390 ✗ layer->ch_layout = (AVChannelLayout){ .order = AV_CHANNEL_ORDER_UNSPEC,
391 ✗ .nb_channels = substream_count +
392 coupled_substream_count };
393
394
2/2
✓ Branch 0 taken 112 times.
✓ Branch 1 taken 60 times.
 172 for (int j = 0; j < substream_count; j++) {
395 112 IAMFSubStream *substream = &audio_element->substreams[k++];
396
397
2/2
✓ Branch 0 taken 78 times.
✓ Branch 1 taken 34 times.
 112 substream->codecpar->ch_layout = coupled_substream_count-- > 0 ? (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO :
398 (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
399
400 112 ret = update_extradata(substream->codecpar);
401
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 112 times.
 112 if (ret < 0)
402 ✗ return ret;
403 }
404
405 }
406
407 25 return 0;
408 }
409
410 4 static int ambisonics_config(void *s, AVIOContext *pb,
411 IAMFAudioElement *audio_element,
412 const IAMFCodecConfig *codec_config)
413 {
414 AVIAMFLayer *layer;
415 unsigned ambisonics_mode;
416 int output_channel_count, substream_count, order;
417 int ret;
418
419 4 ambisonics_mode = ffio_read_leb(pb);
420
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (ambisonics_mode > 1)
421 ✗ return AVERROR_INVALIDDATA;
422
423 4 output_channel_count = avio_r8(pb); // C
424 4 substream_count = avio_r8(pb); // N
425
2/4
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 4 times.
 4 if (audio_element->nb_substreams != substream_count || output_channel_count == 0)
426 ✗ return AVERROR_INVALIDDATA;
427
428 4 order = floor(sqrt(output_channel_count - 1));
429 /* incomplete order - some harmonics are missing */
430
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if ((order + 1) * (order + 1) != output_channel_count)
431 ✗ return AVERROR_INVALIDDATA;
432
433 4 audio_element->layers = av_mallocz(sizeof(*audio_element->layers));
434
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (!audio_element->layers)
435 ✗ return AVERROR(ENOMEM);
436
437 4 audio_element->nb_layers = 1;
438 4 audio_element->layers->substream_count = substream_count;
439
440 4 layer = av_iamf_audio_element_add_layer(audio_element->element);
441
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (!layer)
442 ✗ return AVERROR(ENOMEM);
443
444 4 layer->ambisonics_mode = ambisonics_mode;
445
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 if (ambisonics_mode == 0) {
446
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
 20 for (int i = 0; i < substream_count; i++) {
447 16 IAMFSubStream *substream = &audio_element->substreams[i];
448
449 16 substream->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
450
451 16 ret = update_extradata(substream->codecpar);
452
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
 16 if (ret < 0)
453 ✗ return ret;
454 }
455
456 4 layer->ch_layout.order = AV_CHANNEL_ORDER_CUSTOM;
457 4 layer->ch_layout.nb_channels = output_channel_count;
458 4 layer->ch_layout.u.map = av_calloc(output_channel_count, sizeof(*layer->ch_layout.u.map));
459
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (!layer->ch_layout.u.map)
460 ✗ return AVERROR(ENOMEM);
461
462
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
 20 for (int i = 0; i < output_channel_count; i++)
463 16 layer->ch_layout.u.map[i].id = avio_r8(pb) + AV_CHAN_AMBISONIC_BASE;
464 } else {
465 ✗ int coupled_substream_count = avio_r8(pb); // M
466 ✗ int nb_demixing_matrix = substream_count + coupled_substream_count;
467 ✗ int demixing_matrix_size = nb_demixing_matrix * output_channel_count;
468
469 ✗ audio_element->layers->coupled_substream_count = coupled_substream_count;
470
471 ✗ layer->ch_layout = (AVChannelLayout){ .order = AV_CHANNEL_ORDER_AMBISONIC, .nb_channels = output_channel_count };
472 ✗ layer->demixing_matrix = av_malloc_array(demixing_matrix_size, sizeof(*layer->demixing_matrix));
473 ✗ if (!layer->demixing_matrix)
474 ✗ return AVERROR(ENOMEM);
475
476 ✗ for (int i = 0; i < demixing_matrix_size; i++)
477 ✗ layer->demixing_matrix[i] = av_make_q(sign_extend(avio_rb16(pb), 16), 1 << 8);
478
479 ✗ for (int i = 0; i < substream_count; i++) {
480 ✗ IAMFSubStream *substream = &audio_element->substreams[i];
481
482 ✗ substream->codecpar->ch_layout = coupled_substream_count-- > 0 ? (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO :
483 (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
484
485
486 ✗ ret = update_extradata(substream->codecpar);
487 ✗ if (ret < 0)
488 ✗ return ret;
489 }
490 }
491
492 4 return 0;
493 }
494
495 84 static int param_parse(void *s, IAMFContext *c, AVIOContext *pb,
496 unsigned int type,
497 const IAMFAudioElement *audio_element,
498 AVIAMFParamDefinition **out_param_definition)
499 {
500 84 IAMFParamDefinition *param_definition = NULL;
501 AVIAMFParamDefinition *param;
502 unsigned int parameter_id, parameter_rate, mode;
503 84 unsigned int duration = 0, constant_subblock_duration = 0, nb_subblocks = 0;
504 84 unsigned int total_duration = 0;
505 size_t param_size;
506
507 84 parameter_id = ffio_read_leb(pb);
508
509
2/2
✓ Branch 0 taken 82 times.
✓ Branch 1 taken 47 times.
 129 for (int i = 0; i < c->nb_param_definitions; i++)
510
2/2
✓ Branch 0 taken 37 times.
✓ Branch 1 taken 45 times.
 82 if (c->param_definitions[i]->param->parameter_id == parameter_id) {
511 37 param_definition = c->param_definitions[i];
512 37 break;
513 }
514
515 84 parameter_rate = ffio_read_leb(pb);
516 84 mode = avio_r8(pb) >> 7;
517
518
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 64 times.
 84 if (mode == 0) {
519 20 duration = ffio_read_leb(pb);
520
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (!duration)
521 ✗ return AVERROR_INVALIDDATA;
522 20 constant_subblock_duration = ffio_read_leb(pb);
523
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (constant_subblock_duration == 0)
524 ✗ nb_subblocks = ffio_read_leb(pb);
525 else {
526 20 nb_subblocks = duration / constant_subblock_duration;
527 20 total_duration = duration;
528 }
529 }
530
531 84 param = av_iamf_param_definition_alloc(type, nb_subblocks, &param_size);
532
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 84 times.
 84 if (!param)
533 ✗ return AVERROR(ENOMEM);
534
535
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 84 times.
 104 for (int i = 0; i < nb_subblocks; i++) {
536 20 void *subblock = av_iamf_param_definition_get_subblock(param, i);
537 20 unsigned int subblock_duration = constant_subblock_duration;
538
539
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (constant_subblock_duration == 0) {
540 ✗ subblock_duration = ffio_read_leb(pb);
541 ✗ total_duration += subblock_duration;
542
1/2
✓ Branch 0 taken 20 times.
✗ Branch 1 not taken.
 20 } else if (i == nb_subblocks - 1)
543 20 subblock_duration = duration - i * constant_subblock_duration;
544
545
2/4
✗ Branch 0 not taken.
✓ Branch 1 taken 15 times.
✓ Branch 2 taken 5 times.
✗ Branch 3 not taken.
 20 switch (type) {
546 ✗ case AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN: {
547 ✗ AVIAMFMixGain *mix = subblock;
548 ✗ mix->subblock_duration = subblock_duration;
549 ✗ break;
550 }
551 15 case AV_IAMF_PARAMETER_DEFINITION_DEMIXING: {
552 15 AVIAMFDemixingInfo *demix = subblock;
553 15 demix->subblock_duration = subblock_duration;
554 // DefaultDemixingInfoParameterData
555
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 15 times.
 15 av_assert0(audio_element);
556 15 demix->dmixp_mode = avio_r8(pb) >> 5;
557 15 audio_element->element->default_w = avio_r8(pb) >> 4;
558 15 break;
559 }
560 5 case AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN: {
561 5 AVIAMFReconGain *recon = subblock;
562 5 recon->subblock_duration = subblock_duration;
563 5 break;
564 }
565 ✗ default:
566 ✗ av_free(param);
567 ✗ return AVERROR_INVALIDDATA;
568 }
569 }
570
571
3/6
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 64 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 20 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 84 if (!mode && !constant_subblock_duration && total_duration != duration) {
572 ✗ av_log(s, AV_LOG_ERROR, "Invalid subblock durations in parameter_id %u\n", parameter_id);
573 ✗ av_free(param);
574 ✗ return AVERROR_INVALIDDATA;
575 }
576
577 84 param->parameter_id = parameter_id;
578 84 param->parameter_rate = parameter_rate;
579 84 param->duration = duration;
580 84 param->constant_subblock_duration = constant_subblock_duration;
581 84 param->nb_subblocks = nb_subblocks;
582
583
2/2
✓ Branch 0 taken 37 times.
✓ Branch 1 taken 47 times.
 84 if (param_definition) {
584
2/4
✓ Branch 0 taken 37 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 37 times.
 37 if (param_definition->param_size != param_size || memcmp(param_definition->param, param, param_size)) {
585 ✗ av_log(s, AV_LOG_ERROR, "Incosistent parameters for parameter_id %u\n", parameter_id);
586 ✗ av_free(param);
587 ✗ return AVERROR_INVALIDDATA;
588 }
589 } else {
590 47 IAMFParamDefinition **tmp = av_realloc_array(c->param_definitions, c->nb_param_definitions + 1,
591 sizeof(*c->param_definitions));
592
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 47 times.
 47 if (!tmp) {
593 ✗ av_free(param);
594 ✗ return AVERROR(ENOMEM);
595 }
596 47 c->param_definitions = tmp;
597
598 47 param_definition = av_mallocz(sizeof(*param_definition));
599
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 47 times.
 47 if (!param_definition) {
600 ✗ av_free(param);
601 ✗ return AVERROR(ENOMEM);
602 }
603 47 param_definition->param = param;
604 47 param_definition->mode = !mode;
605 47 param_definition->param_size = param_size;
606 47 param_definition->audio_element = audio_element;
607
608 47 c->param_definitions[c->nb_param_definitions++] = param_definition;
609 }
610
611
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 84 times.
 84 av_assert0(out_param_definition);
612 84 *out_param_definition = param;
613
614 84 return 0;
615 }
616
617 29 static int audio_element_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
618 {
619 const IAMFCodecConfig *codec_config;
620 AVIAMFAudioElement *element;
621 29 IAMFAudioElement **tmp, *audio_element = NULL;
622 FFIOContext b;
623 AVIOContext *pbc;
624 uint8_t *buf;
625 unsigned audio_element_id, nb_substreams, codec_config_id, num_parameters;
626 int audio_element_type, ret;
627
628 29 buf = av_malloc(len);
629
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!buf)
630 ✗ return AVERROR(ENOMEM);
631
632 29 ret = ffio_read_size(pb, buf, len);
633
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (ret < 0)
634 ✗ goto fail;
635
636 29 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
637 29 pbc = &b.pub;
638
639 29 audio_element_id = ffio_read_leb(pbc);
640
641
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 29 times.
 31 for (int i = 0; i < c->nb_audio_elements; i++)
642
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (c->audio_elements[i]->audio_element_id == audio_element_id) {
643 ✗ av_log(s, AV_LOG_ERROR, "Duplicate audio_element_id %d\n", audio_element_id);
644 ✗ ret = AVERROR_INVALIDDATA;
645 ✗ goto fail;
646 }
647
648 29 audio_element_type = avio_r8(pbc) >> 5;
649
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (audio_element_type > AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE) {
650 ✗ av_log(s, AV_LOG_DEBUG, "Unknown audio_element_type referenced in an audio element. Ignoring\n");
651 ✗ ret = 0;
652 ✗ goto fail;
653 }
654
655 29 codec_config_id = ffio_read_leb(pbc);
656
657 29 codec_config = ff_iamf_get_codec_config(c, codec_config_id);
658
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!codec_config) {
659 ✗ av_log(s, AV_LOG_ERROR, "Non existant codec config id %d referenced in an audio element\n", codec_config_id);
660 ✗ ret = AVERROR_INVALIDDATA;
661 ✗ goto fail;
662 }
663
664
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (codec_config->codec_id == AV_CODEC_ID_NONE) {
665 ✗ av_log(s, AV_LOG_DEBUG, "Unknown codec id referenced in an audio element. Ignoring\n");
666 ✗ ret = 0;
667 ✗ goto fail;
668 }
669
670 29 tmp = av_realloc_array(c->audio_elements, c->nb_audio_elements + 1, sizeof(*c->audio_elements));
671
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!tmp) {
672 ✗ ret = AVERROR(ENOMEM);
673 ✗ goto fail;
674 }
675 29 c->audio_elements = tmp;
676
677 29 audio_element = av_mallocz(sizeof(*audio_element));
678
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!audio_element) {
679 ✗ ret = AVERROR(ENOMEM);
680 ✗ goto fail;
681 }
682
683 29 nb_substreams = ffio_read_leb(pbc);
684 29 audio_element->codec_config_id = codec_config_id;
685 29 audio_element->audio_element_id = audio_element_id;
686 29 audio_element->substreams = av_calloc(nb_substreams, sizeof(*audio_element->substreams));
687
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!audio_element->substreams) {
688 ✗ ret = AVERROR(ENOMEM);
689 ✗ goto fail;
690 }
691 29 audio_element->nb_substreams = nb_substreams;
692
693 29 element = audio_element->element = av_iamf_audio_element_alloc();
694
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (!element) {
695 ✗ ret = AVERROR(ENOMEM);
696 ✗ goto fail;
697 }
698 29 audio_element->celement = element;
699
700 29 element->audio_element_type = audio_element_type;
701
702
2/2
✓ Branch 0 taken 128 times.
✓ Branch 1 taken 29 times.
 157 for (int i = 0; i < audio_element->nb_substreams; i++) {
703 128 IAMFSubStream *substream = &audio_element->substreams[i];
704
705 128 substream->codecpar = avcodec_parameters_alloc();
706
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 128 times.
 128 if (!substream->codecpar) {
707 ✗ ret = AVERROR(ENOMEM);
708 ✗ goto fail;
709 }
710
711 128 substream->audio_substream_id = ffio_read_leb(pbc);
712
713 128 substream->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
714 128 substream->codecpar->codec_id = codec_config->codec_id;
715 128 substream->codecpar->frame_size = codec_config->nb_samples;
716 128 substream->codecpar->sample_rate = codec_config->sample_rate;
717 128 substream->codecpar->seek_preroll = -codec_config->audio_roll_distance * codec_config->nb_samples;
718
719
1/2
✓ Branch 0 taken 128 times.
✗ Branch 1 not taken.
 128 switch(substream->codecpar->codec_id) {
720 128 case AV_CODEC_ID_AAC:
721 case AV_CODEC_ID_FLAC:
722 case AV_CODEC_ID_OPUS:
723 128 substream->codecpar->extradata = av_malloc(codec_config->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
724
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 128 times.
 128 if (!substream->codecpar->extradata) {
725 ✗ ret = AVERROR(ENOMEM);
726 ✗ goto fail;
727 }
728 128 memcpy(substream->codecpar->extradata, codec_config->extradata, codec_config->extradata_size);
729 128 memset(substream->codecpar->extradata + codec_config->extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
730 128 substream->codecpar->extradata_size = codec_config->extradata_size;
731 128 break;
732 }
733 }
734
735 29 num_parameters = ffio_read_leb(pbc);
736
3/4
✓ Branch 0 taken 15 times.
✓ Branch 1 taken 14 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 15 times.
 29 if (num_parameters && audio_element_type != 0) {
737 ✗ av_log(s, AV_LOG_ERROR, "Audio Element parameter count %u is invalid"
738 " for Scene representations\n", num_parameters);
739 ✗ ret = AVERROR_INVALIDDATA;
740 ✗ goto fail;
741 }
742
743
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 29 times.
 49 for (int i = 0; i < num_parameters; i++) {
744 unsigned type;
745
746 20 type = ffio_read_leb(pbc);
747
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (type == AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN)
748 ✗ ret = AVERROR_INVALIDDATA;
749
2/2
✓ Branch 0 taken 15 times.
✓ Branch 1 taken 5 times.
 20 else if (type == AV_IAMF_PARAMETER_DEFINITION_DEMIXING)
750 15 ret = param_parse(s, c, pbc, type, audio_element, &element->demixing_info);
751
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 5 else if (type == AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN)
752 5 ret = param_parse(s, c, pbc, type, audio_element, &element->recon_gain_info);
753 else {
754 ✗ unsigned param_definition_size = ffio_read_leb(pbc);
755 ✗ avio_skip(pbc, param_definition_size);
756 }
757
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 if (ret < 0)
758 ✗ goto fail;
759 }
760
761
2/2
✓ Branch 0 taken 25 times.
✓ Branch 1 taken 4 times.
 29 if (audio_element_type == AV_IAMF_AUDIO_ELEMENT_TYPE_CHANNEL) {
762 25 ret = scalable_channel_layout_config(s, pbc, audio_element, codec_config);
763
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
 25 if (ret < 0)
764 ✗ goto fail;
765
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 } else if (audio_element_type == AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE) {
766 4 ret = ambisonics_config(s, pbc, audio_element, codec_config);
767
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (ret < 0)
768 ✗ goto fail;
769 } else {
770 ✗ av_assert0(0);
771 }
772
773 29 c->audio_elements[c->nb_audio_elements++] = audio_element;
774
775 29 len -= avio_tell(pbc);
776
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (len)
777 ✗ av_log(s, AV_LOG_WARNING, "Underread in audio_element_obu. %d bytes left at the end\n", len);
778
779 29 ret = 0;
780 29 fail:
781 29 av_free(buf);
782
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29 times.
 29 if (ret < 0)
783 ✗ ff_iamf_free_audio_element(&audio_element);
784 29 return ret;
785 }
786
787 87 static int label_string(AVIOContext *pb, char **label)
788 {
789 uint8_t buf[128];
790
791 87 avio_get_str(pb, sizeof(buf), buf, sizeof(buf));
792
793
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 87 times.
 87 if (pb->error)
794 ✗ return pb->error;
795
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 87 times.
 87 if (pb->eof_reached)
796 ✗ return AVERROR_INVALIDDATA;
797 87 *label = av_strdup(buf);
798
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 87 times.
 87 if (!*label)
799 ✗ return AVERROR(ENOMEM);
800
801 87 return 0;
802 }
803
804 27 static int mix_presentation_obu(void *s, IAMFContext *c, AVIOContext *pb, int len)
805 {
806 AVIAMFMixPresentation *mix;
807 27 IAMFMixPresentation **tmp, *mix_presentation = NULL;
808 FFIOContext b;
809 AVIOContext *pbc;
810 uint8_t *buf;
811 unsigned nb_submixes, mix_presentation_id;
812 int ret;
813
814 27 buf = av_malloc(len);
815
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!buf)
816 ✗ return AVERROR(ENOMEM);
817
818 27 ret = ffio_read_size(pb, buf, len);
819
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
820 ✗ goto fail;
821
822 27 ffio_init_context(&b, buf, len, 0, NULL, NULL, NULL, NULL);
823 27 pbc = &b.pub;
824
825 27 mix_presentation_id = ffio_read_leb(pbc);
826
827
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 for (int i = 0; i < c->nb_mix_presentations; i++)
828 ✗ if (c->mix_presentations[i]->mix_presentation_id == mix_presentation_id) {
829 ✗ av_log(s, AV_LOG_ERROR, "Duplicate mix_presentation_id %d\n", mix_presentation_id);
830 ✗ ret = AVERROR_INVALIDDATA;
831 ✗ goto fail;
832 }
833
834 27 tmp = av_realloc_array(c->mix_presentations, c->nb_mix_presentations + 1, sizeof(*c->mix_presentations));
835
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!tmp) {
836 ✗ ret = AVERROR(ENOMEM);
837 ✗ goto fail;
838 }
839 27 c->mix_presentations = tmp;
840
841 27 mix_presentation = av_mallocz(sizeof(*mix_presentation));
842
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!mix_presentation) {
843 ✗ ret = AVERROR(ENOMEM);
844 ✗ goto fail;
845 }
846
847 27 mix_presentation->mix_presentation_id = mix_presentation_id;
848 27 mix = mix_presentation->mix = av_iamf_mix_presentation_alloc();
849
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!mix) {
850 ✗ ret = AVERROR(ENOMEM);
851 ✗ goto fail;
852 }
853 27 mix_presentation->cmix = mix;
854
855 27 mix_presentation->count_label = ffio_read_leb(pbc);
856 27 mix_presentation->language_label = av_calloc(mix_presentation->count_label,
857 sizeof(*mix_presentation->language_label));
858
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (!mix_presentation->language_label) {
859 ✗ mix_presentation->count_label = 0;
860 ✗ ret = AVERROR(ENOMEM);
861 ✗ goto fail;
862 }
863
864
2/2
✓ Branch 0 taken 27 times.
✓ Branch 1 taken 27 times.
 54 for (int i = 0; i < mix_presentation->count_label; i++) {
865 27 ret = label_string(pbc, &mix_presentation->language_label[i]);
866
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
867 ✗ goto fail;
868 }
869
870
2/2
✓ Branch 0 taken 27 times.
✓ Branch 1 taken 27 times.
 54 for (int i = 0; i < mix_presentation->count_label; i++) {
871 27 char *annotation = NULL;
872 27 ret = label_string(pbc, &annotation);
873
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
874 ✗ goto fail;
875 27 ret = av_dict_set(&mix->annotations, mix_presentation->language_label[i], annotation,
876 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
877
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
878 ✗ goto fail;
879 }
880
881 27 nb_submixes = ffio_read_leb(pbc);
882
2/2
✓ Branch 0 taken 31 times.
✓ Branch 1 taken 27 times.
 58 for (int i = 0; i < nb_submixes; i++) {
883 AVIAMFSubmix *sub_mix;
884 unsigned nb_elements, nb_layouts;
885
886 31 sub_mix = av_iamf_mix_presentation_add_submix(mix);
887
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31 times.
 31 if (!sub_mix) {
888 ✗ ret = AVERROR(ENOMEM);
889 ✗ goto fail;
890 }
891
892 31 nb_elements = ffio_read_leb(pbc);
893
2/2
✓ Branch 0 taken 33 times.
✓ Branch 1 taken 31 times.
 64 for (int j = 0; j < nb_elements; j++) {
894 AVIAMFSubmixElement *submix_element;
895 33 IAMFAudioElement *audio_element = NULL;
896 unsigned int rendering_config_extension_size;
897
898 33 submix_element = av_iamf_submix_add_element(sub_mix);
899
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33 times.
 33 if (!submix_element) {
900 ✗ ret = AVERROR(ENOMEM);
901 ✗ goto fail;
902 }
903
904 33 submix_element->audio_element_id = ffio_read_leb(pbc);
905
906
1/2
✓ Branch 0 taken 35 times.
✗ Branch 1 not taken.
 35 for (int k = 0; k < c->nb_audio_elements; k++)
907
2/2
✓ Branch 0 taken 33 times.
✓ Branch 1 taken 2 times.
 35 if (c->audio_elements[k]->audio_element_id == submix_element->audio_element_id) {
908 33 audio_element = c->audio_elements[k];
909 33 break;
910 }
911
912
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33 times.
 33 if (!audio_element) {
913 ✗ av_log(s, AV_LOG_ERROR, "Invalid Audio Element with id %u referenced by Mix Parameters %u\n",
914 submix_element->audio_element_id, mix_presentation_id);
915 ✗ ret = AVERROR_INVALIDDATA;
916 ✗ goto fail;
917 }
918
919
2/2
✓ Branch 0 taken 33 times.
✓ Branch 1 taken 33 times.
 66 for (int k = 0; k < mix_presentation->count_label; k++) {
920 33 char *annotation = NULL;
921 33 ret = label_string(pbc, &annotation);
922
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33 times.
 33 if (ret < 0)
923 ✗ goto fail;
924 33 ret = av_dict_set(&submix_element->annotations, mix_presentation->language_label[k], annotation,
925 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
926
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33 times.
 33 if (ret < 0)
927 ✗ goto fail;
928 }
929
930 33 submix_element->headphones_rendering_mode = avio_r8(pbc) >> 6;
931
932 33 rendering_config_extension_size = ffio_read_leb(pbc);
933 33 avio_skip(pbc, rendering_config_extension_size);
934
935 33 ret = param_parse(s, c, pbc, AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN,
936 NULL,
937 &submix_element->element_mix_config);
938
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33 times.
 33 if (ret < 0)
939 ✗ goto fail;
940 33 submix_element->default_mix_gain = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
941 }
942
943 31 ret = param_parse(s, c, pbc, AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN, NULL, &sub_mix->output_mix_config);
944
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31 times.
 31 if (ret < 0)
945 ✗ goto fail;
946 31 sub_mix->default_mix_gain = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
947
948 31 nb_layouts = ffio_read_leb(pbc);
949
2/2
✓ Branch 0 taken 68 times.
✓ Branch 1 taken 31 times.
 99 for (int j = 0; j < nb_layouts; j++) {
950 AVIAMFSubmixLayout *submix_layout;
951 int info_type;
952 68 int byte = avio_r8(pbc);
953
954 68 submix_layout = av_iamf_submix_add_layout(sub_mix);
955
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68 times.
 68 if (!submix_layout) {
956 ✗ ret = AVERROR(ENOMEM);
957 ✗ goto fail;
958 }
959
960 68 submix_layout->layout_type = byte >> 6;
961
1/2
✓ Branch 0 taken 68 times.
✗ Branch 1 not taken.
 68 if (submix_layout->layout_type < AV_IAMF_SUBMIX_LAYOUT_TYPE_LOUDSPEAKERS ||
962
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68 times.
 68 submix_layout->layout_type > AV_IAMF_SUBMIX_LAYOUT_TYPE_BINAURAL) {
963 ✗ av_log(s, AV_LOG_ERROR, "Invalid Layout type %u in a submix from Mix Presentation %u\n",
964 ✗ submix_layout->layout_type, mix_presentation_id);
965 ✗ ret = AVERROR_INVALIDDATA;
966 ✗ goto fail;
967 }
968
2/2
✓ Branch 0 taken 64 times.
✓ Branch 1 taken 4 times.
 68 if (submix_layout->layout_type == 2) {
969 int sound_system;
970 64 sound_system = (byte >> 2) & 0xF;
971
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 64 times.
 64 if (sound_system >= FF_ARRAY_ELEMS(ff_iamf_sound_system_map)) {
972 ✗ ret = AVERROR_INVALIDDATA;
973 ✗ goto fail;
974 }
975 64 av_channel_layout_copy(&submix_layout->sound_system, &ff_iamf_sound_system_map[sound_system].layout);
976 } else
977 4 submix_layout->sound_system = (AVChannelLayout)AV_CHANNEL_LAYOUT_BINAURAL;
978
979 68 info_type = avio_r8(pbc);
980 68 submix_layout->integrated_loudness = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
981 68 submix_layout->digital_peak = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
982
983
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68 times.
 68 if (info_type & 1)
984 ✗ submix_layout->true_peak = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
985
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68 times.
 68 if (info_type & 2) {
986 ✗ unsigned int num_anchored_loudness = avio_r8(pbc);
987
988 ✗ for (int k = 0; k < num_anchored_loudness; k++) {
989 ✗ unsigned int anchor_element = avio_r8(pbc);
990 ✗ AVRational anchored_loudness = av_make_q(sign_extend(avio_rb16(pbc), 16), 1 << 8);
991 ✗ if (anchor_element == IAMF_ANCHOR_ELEMENT_DIALOGUE)
992 ✗ submix_layout->dialogue_anchored_loudness = anchored_loudness;
993 ✗ else if (anchor_element <= IAMF_ANCHOR_ELEMENT_ALBUM)
994 ✗ submix_layout->album_anchored_loudness = anchored_loudness;
995 else
996 ✗ av_log(s, AV_LOG_DEBUG, "Unknown anchor_element. Ignoring\n");
997 }
998 }
999
1000
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68 times.
 68 if (info_type & 0xFC) {
1001 ✗ unsigned int info_type_size = ffio_read_leb(pbc);
1002 ✗ avio_skip(pbc, info_type_size);
1003 }
1004 }
1005 }
1006
1007 27 c->mix_presentations[c->nb_mix_presentations++] = mix_presentation;
1008
1009 27 len -= avio_tell(pbc);
1010
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (len)
1011 ✗ av_log(s, AV_LOG_WARNING, "Underread in mix_presentation_obu. %d bytes left at the end\n", len);
1012
1013 27 ret = 0;
1014 27 fail:
1015 27 av_free(buf);
1016
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (ret < 0)
1017 ✗ ff_iamf_free_mix_presentation(&mix_presentation);
1018 27 return ret;
1019 }
1020
1021 8186 int ff_iamf_parse_obu_header(const uint8_t *buf, int buf_size,
1022 unsigned *obu_size, int *start_pos, enum IAMF_OBU_Type *type,
1023 unsigned *skip_samples, unsigned *discard_padding)
1024 {
1025 GetBitContext gb;
1026 int ret, extension_flag, trimming, start;
1027 8186 unsigned skip = 0, discard = 0;
1028 unsigned size;
1029
1030 8186 ret = init_get_bits8(&gb, buf, FFMIN(buf_size, MAX_IAMF_OBU_HEADER_SIZE));
1031
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8186 times.
 8186 if (ret < 0)
1032 ✗ return ret;
1033
1034 8186 *type = get_bits(&gb, 5);
1035 8186 /*redundant =*/ get_bits1(&gb);
1036 8186 trimming = get_bits1(&gb);
1037 8186 extension_flag = get_bits1(&gb);
1038
1039 8186 *obu_size = get_leb(&gb);
1040
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 8177 times.
 8186 if (*obu_size > INT_MAX)
1041 9 return AVERROR_INVALIDDATA;
1042
1043 8177 start = get_bits_count(&gb) / 8;
1044
1045
2/2
✓ Branch 0 taken 2334 times.
✓ Branch 1 taken 5843 times.
 8177 if (trimming) {
1046 2334 discard = get_leb(&gb); // num_samples_to_trim_at_end
1047 2334 skip = get_leb(&gb); // num_samples_to_trim_at_start
1048 }
1049
1050
2/2
✓ Branch 0 taken 791 times.
✓ Branch 1 taken 7386 times.
 8177 if (skip_samples)
1051 791 *skip_samples = skip;
1052
2/2
✓ Branch 0 taken 791 times.
✓ Branch 1 taken 7386 times.
 8177 if (discard_padding)
1053 791 *discard_padding = discard;
1054
1055
2/2
✓ Branch 0 taken 728 times.
✓ Branch 1 taken 7449 times.
 8177 if (extension_flag) {
1056 unsigned int extension_bytes;
1057 728 extension_bytes = get_leb(&gb);
1058
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 710 times.
 728 if (extension_bytes > INT_MAX / 8)
1059 18 return AVERROR_INVALIDDATA;
1060 710 skip_bits_long(&gb, extension_bytes * 8);
1061 }
1062
1063
2/2
✓ Branch 1 taken 530 times.
✓ Branch 2 taken 7629 times.
 8159 if (get_bits_left(&gb) < 0)
1064 530 return AVERROR_INVALIDDATA;
1065
1066 7629 size = *obu_size + start;
1067
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7629 times.
 7629 if (size > INT_MAX)
1068 ✗ return AVERROR_INVALIDDATA;
1069
1070 7629 *obu_size -= get_bits_count(&gb) / 8 - start;
1071 7629 *start_pos = size - *obu_size;
1072
1073 7629 return size;
1074 }
1075
1076 27 int ff_iamfdec_read_descriptors(IAMFContext *c, AVIOContext *pb,
1077 int max_size, void *log_ctx)
1078 {
1079 uint8_t header[MAX_IAMF_OBU_HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
1080 int ret;
1081
1082 100 while (1) {
1083 unsigned obu_size;
1084 enum IAMF_OBU_Type type;
1085 int start_pos, len, size;
1086
1087
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 127 times.
 127 if ((ret = ffio_ensure_seekback(pb, FFMIN(MAX_IAMF_OBU_HEADER_SIZE, max_size))) < 0)
1088 ✗ return ret;
1089 127 size = avio_read(pb, header, FFMIN(MAX_IAMF_OBU_HEADER_SIZE, max_size));
1090
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 127 times.
 127 if (size < 0)
1091 ✗ return size;
1092 127 memset(header + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1093
1094 127 len = ff_iamf_parse_obu_header(header, size, &obu_size, &start_pos, &type, NULL, NULL);
1095
2/4
✓ Branch 0 taken 127 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 127 times.
 127 if (len < 0 || obu_size > max_size) {
1096 ✗ av_log(log_ctx, AV_LOG_ERROR, "Failed to read obu header\n");
1097 ✗ avio_seek(pb, -size, SEEK_CUR);
1098 ✗ return len;
1099 }
1100
1101
4/4
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 83 times.
✓ Branch 2 taken 17 times.
✓ Branch 3 taken 27 times.
 127 if (type >= IAMF_OBU_IA_PARAMETER_BLOCK && type < IAMF_OBU_IA_SEQUENCE_HEADER) {
1102 17 avio_seek(pb, -size, SEEK_CUR);
1103 17 break;
1104 }
1105
1106 110 avio_seek(pb, -(size - start_pos), SEEK_CUR);
1107
4/4
✓ Branch 0 taken 27 times.
✓ Branch 1 taken 29 times.
✓ Branch 2 taken 27 times.
✓ Branch 3 taken 27 times.
 110 switch (type) {
1108 27 case IAMF_OBU_IA_CODEC_CONFIG:
1109 27 ret = codec_config_obu(log_ctx, c, pb, obu_size);
1110 27 break;
1111 29 case IAMF_OBU_IA_AUDIO_ELEMENT:
1112 29 ret = audio_element_obu(log_ctx, c, pb, obu_size);
1113 29 break;
1114 27 case IAMF_OBU_IA_MIX_PRESENTATION:
1115 27 ret = mix_presentation_obu(log_ctx, c, pb, obu_size);
1116 27 break;
1117 27 default: {
1118 27 int64_t offset = avio_skip(pb, obu_size);
1119
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
 27 if (offset < 0)
1120 ✗ ret = offset;
1121 27 break;
1122 }
1123 }
1124
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 110 times.
 110 if (ret < 0) {
1125 ✗ av_log(log_ctx, AV_LOG_ERROR, "Failed to read obu type %d\n", type);
1126 ✗ return ret;
1127 }
1128 110 max_size -= obu_size + start_pos;
1129
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 110 times.
 110 if (max_size < 0)
1130 ✗ return AVERROR_INVALIDDATA;
1131
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 100 times.
 110 if (!max_size)
1132 10 break;
1133 }
1134
1135 27 return 0;
1136 }
1137