summaryrefslogtreecommitdiffstats
path: root/src/MuxElements.cpp
blob: cb2d54560e7b0f7e667af0af0f84d96cfcf4e68e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
/*
   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
   2011, 2012 Her Majesty the Queen in Right of Canada (Communications
   Research Center Canada)

   Copyright (C) 2019
   Matthias P. Braendli, matthias.braendli@mpb.li

    http://www.opendigitalradio.org
   */
/*
   This file is part of ODR-DabMux.

   ODR-DabMux is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as
   published by the Free Software Foundation, either version 3 of the
   License, or (at your option) any later version.

   ODR-DabMux is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <vector>
#include <memory>
#include <algorithm>

#include "MuxElements.h"
#include "lib/charset/charset.h"
#include <boost/algorithm/string.hpp>
#include <boost/format.hpp>

const unsigned short Sub_Channel_SizeTable[64] = {
    16, 21, 24, 29, 35, 24, 29, 35,
    42, 52, 29, 35, 42, 52, 32, 42,
    48, 58, 70, 40, 52, 58, 70, 84,
    48, 58, 70, 84, 104, 58, 70, 84,
    104, 64, 84, 96, 116, 140, 80, 104,
    116, 140, 168, 96, 116, 140, 168, 208,
    116, 140, 168, 208, 232, 128, 168, 192,
    232, 280, 160, 208, 280, 192, 280, 416
};

static CharsetConverter charset_converter;

using namespace std;

std::string AnnouncementCluster::tostring() const
{
    stringstream ss;
    ss << "cluster id(" << (int)cluster_id;
    ss << ", flags 0x" << boost::format("%04x") % flags;
    ss << ", subchannel " << subchanneluid;

    {
        lock_guard<mutex> lock(m_active_mutex);
        if (m_active) {
            ss << " active ";
        }

        if (m_deferred_start_time) {
            ss << " start pending";
        }

        if (m_deferred_stop_time) {
            ss << " stop pending";
        }
    }

    ss << " )";

    return ss.str();
}

bool AnnouncementCluster::is_active()
{
    lock_guard<mutex> lock(m_active_mutex);

    if (m_deferred_start_time) {
        const auto now = std::chrono::steady_clock::now();

        if (*m_deferred_start_time <= now) {
            m_active = true;

            m_deferred_start_time = boost::none;
        }
    }

    if (m_deferred_stop_time) {
        const auto now = std::chrono::steady_clock::now();

        if (*m_deferred_stop_time <= now) {
            m_active = false;

            m_deferred_stop_time = boost::none;
        }
    }

    return m_active;
}

void AnnouncementCluster::set_parameter(const string& parameter,
        const string& value)
{
    if (parameter == "active") {
        stringstream ss;
        ss << value;

        lock_guard<mutex> lock(m_active_mutex);
        ss >> m_active;
    }
    else if (parameter == "start_in") {
        stringstream ss;
        ss << value;

        int start_in_ms;
        ss >> start_in_ms;

        lock_guard<mutex> lock(m_active_mutex);
        using namespace std::chrono;
        m_deferred_start_time = steady_clock::now() + milliseconds(start_in_ms);
    }
    else if (parameter == "stop_in") {
        stringstream ss;
        ss << value;

        int stop_in_ms;
        ss >> stop_in_ms;

        lock_guard<mutex> lock(m_active_mutex);
        using namespace std::chrono;
        m_deferred_stop_time = steady_clock::now() + milliseconds(stop_in_ms);
    }
    else {
        stringstream ss;
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
}

const string AnnouncementCluster::get_parameter(const string& parameter) const
{
    using namespace std::chrono;

    stringstream ss;
    if (parameter == "active") {
        lock_guard<mutex> lock(m_active_mutex);
        ss << m_active;
    }
    else if (parameter == "start_in") {
        lock_guard<mutex> lock(m_active_mutex);
        if (m_deferred_start_time) {
            const auto diff = *m_deferred_start_time - steady_clock::now();
            ss << duration_cast<milliseconds>(diff).count();
        }
        else {
            ss << "Not set";
        }
    }
    else if (parameter == "stop_in") {
        lock_guard<mutex> lock(m_active_mutex);
        if (m_deferred_stop_time) {
            const auto diff = *m_deferred_stop_time - steady_clock::now();
            ss << duration_cast<milliseconds>(diff).count();
        }
        else {
            ss << "Not set";
        }
    }
    else {
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
    return ss.str();
}


int DabLabel::setLabel(const std::string& label)
{
    try {
        auto ebu_label = charset_converter.utf8_to_ebu(label, false);
        size_t len = ebu_label.length();
        if (len > DABLABEL_LENGTH) {
            return -3;
        }

        m_fig1_label = ebu_label;
    }
    catch (const utf8::exception& e) {
        etiLog.level(warn) << "Failed to convert label '" << label <<
            "' to EBU Charset";

        size_t len = label.length();
        if (len > DABLABEL_LENGTH) {
            return -3;
        }

        m_fig1_label = label;
    }

    m_fig1_flag = 0xFF00; // truncate the label to the eight first characters

    return 0;
}

int DabLabel::setLabel(const std::string& label, const std::string& short_label)
{
    DabLabel newlabel;
    newlabel.m_fig1_flag = 0xFF00;

    try {
        newlabel.m_fig1_label = charset_converter.utf8_to_ebu(label, false);

        size_t len = newlabel.m_fig1_label.length();
        if (len > DABLABEL_LENGTH) {
            return -3;
        }

        int flag = newlabel.setFIG1ShortLabel(
                charset_converter.utf8_to_ebu(short_label, false));
        if (flag < 0) {
            return flag;
        }

        m_fig1_flag = flag & 0xFFFF;
    }
    catch (const utf8::exception& e) {
        etiLog.level(warn) << "Failed to convert label '" << label <<
            " or short label '" << short_label << "' to EBU Charset";

        // Use label as-is

        size_t len = label.length();
        if (len > DABLABEL_LENGTH) {
            return -3;
        }

        newlabel.m_fig1_label = label;
        newlabel.m_fig1_flag = 0xFF00;

        int result = newlabel.setLabel(label);
        if (result < 0) {
            return result;
        }

        /* First check if we can actually create the short label */
        int flag = newlabel.setFIG1ShortLabel(short_label);
        if (flag < 0) {
            return flag;
        }

        m_fig1_flag = flag & 0xFFFF;
    }

    // short label is valid.
    m_fig1_label = newlabel.m_fig1_label;
    return 0;
}

/* The label.flag is a 16bit mask that tells which label
 * characters are to be used for the short label
 *
 * From EN 300 401, clause 5.2.2.2.1:
 *
 * Character flag field: this 16-bit flag field shall indicate which of the
 * characters of the character field are to be
 * displayed in an abbreviated form of the label, as follows:
 *  bi: (i = 0, ... ,15);
 *  0: not to be displayed in abbreviated label;
 *  1: to be displayed in abbreviated label.
 * NOTE: Not more than 8 of the bi may be set to "1".
 *
 * returns:  the flag (16 bits) on success
 *          -1 if the short_label is not a representable
 *          -2 if the short_label is too long
 */
int DabLabel::setFIG1ShortLabel(const std::string& slabel)
{
    const char* slab = slabel.c_str();
    uint16_t flag = 0x0;

    /* Iterate over the label and set the bits in the flag
     * according to the characters in the slabel
     */
    for (size_t i = 0; i < m_fig1_label.size(); ++i) {
        if (*slab == m_fig1_label[i]) {
            flag |= 0x8000 >> i;
            if (*(++slab) == '\0') {
                break;
            }
        }
    }

    /* If we have remaining characters in the slabel after
     * we went through the whole label, the short label
     * cannot be represented
     */
    if (*slab != '\0') {
        return -1;
    }

    /* Count the number of bits in the flag */
    int count = 0;
    for (int i = 0; i < 16; ++i) {
        if (flag & (1 << i)) {
            ++count;
        }
    }
    if (count > 8) {
        return -2;
    }

    return flag;
}

const string DabLabel::long_label() const
{
    return charset_converter.ebu_to_utf8(m_fig1_label);
}

const string DabLabel::short_label() const
{
    stringstream shortlabel;
    for (size_t i = 0; i < m_fig1_label.size(); ++i) {
        if (m_fig1_flag & 0x8000 >> i) {
            shortlabel << m_fig1_label[i];
        }
    }

    return charset_converter.ebu_to_utf8(shortlabel.str());
}

const string DabLabel::fig2_label() const
{
    return m_fig2_label;
}

int DabLabel::setFIG2Label(const std::string& label)
{
    m_fig2_label = label;
    return 0;
}

void DabLabel::setFIG2CharacterField(uint16_t character_field)
{
    m_fig2_use_text_control = false;
    m_fig2_character_field = character_field;
}

void DabLabel::setFIG2TextControl(FIG2TextControl tc)
{
    m_fig2_use_text_control = true;
    m_fig2_text_control = tc;
}

void DabLabel::writeLabel(uint8_t* buf) const
{
    memset(buf, ' ', DABLABEL_LENGTH);
    if (m_fig1_label.size() <= DABLABEL_LENGTH) {
        std::copy(m_fig1_label.begin(), m_fig1_label.end(), (char*)buf);
    }
}

vec_sp_subchannel::iterator getSubchannel(
        vec_sp_subchannel& subchannels,
        int id)
{
    return find_if(
            subchannels.begin(),
            subchannels.end(),
            [&](shared_ptr<DabSubchannel>& s){ return s->id == id; }
            );
}

vec_sp_component::iterator getComponent(
        vec_sp_component& components,
        uint32_t serviceId,
        vec_sp_component::iterator current)
{
    if (current == components.end()) {
        current = components.begin();
    }
    else {
        ++current;
    }

    while (current != components.end()) {
        if ((*current)->serviceId == serviceId) {
            return current;
        }
        ++current;
    }

    return components.end();
}

uint8_t dabProtection::to_tpl() const
{
    if (form == UEP) {
        return 0x10 | ProtectionLevelTable[uep.tableIndex];
    }
    else if (form == EEP) {
        return 0x20 | (eep.GetOption() << 2) | level;
    }
    throw logic_error("Invalid protection form");
}

vec_sp_component::iterator getComponent(
        vec_sp_component& components,
        uint32_t serviceId) {
    return getComponent(components, serviceId, components.end());
}

vec_sp_service::iterator getService(
        std::shared_ptr<DabComponent> component,
        vec_sp_service& services)
{
    size_t i = 0;
    for (const auto service : services) {
        if (service->id == component->serviceId) {
            return services.begin() + i;
        }
        i++;
    }

    throw std::runtime_error("Service not included in any component");
}

bool DabComponent::isPacketComponent(vec_sp_subchannel& subchannels) const
{
    if (subchId > 63) {
        etiLog.log(error,
                "You must define subchannel id in the "
                "packet component before defining packet ");
        return false;
    }
    const auto subch_it = getSubchannel(subchannels, subchId);
    if (subch_it == subchannels.cend()) {
        etiLog.log(error,
                "Invalid subchannel id in the packet component "
                "for defining packet ");
        return false;
    }

    return (*subch_it)->type == subchannel_type_t::Packet;
}

void DabComponent::set_parameter(const string& parameter,
        const string& value)
{
    if (parameter == "label") {
        vector<string> fields;
        boost::split(fields, value, boost::is_any_of(","));
        if (fields.size() != 2) {
            throw ParameterError("Parameter 'label' must have format"
                    " 'label,shortlabel'");
        }
        int success = this->label.setLabel(fields[0], fields[1]);
        stringstream ss;
        switch (success)
        {
            case 0:
                break;
            case -1:
                ss << m_rc_name << " short label " <<
                    fields[1] << " is not subset of label '" <<
                    fields[0] << "'";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            case -2:
                ss << m_rc_name << " short label " <<
                    fields[1] << " is too long (max 8 characters)";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            case -3:
                ss << m_rc_name << " label " <<
                    fields[0] << " is too long (max 16 characters)";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            default:
                ss << m_rc_name << " short label definition: program error !";
                etiLog.level(alert) << ss.str();
                throw ParameterError(ss.str());
        }
    }
    else {
        stringstream ss;
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
}

const string DabComponent::get_parameter(const string& parameter) const
{
    stringstream ss;
    if (parameter == "label") {
        ss << label.long_label() << "," << label.short_label();
    }
    else {
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
    return ss.str();

}

subchannel_type_t DabService::getType(
        const std::shared_ptr<dabEnsemble> ensemble) const
{
    auto component =
        getComponent(ensemble->components, id);
    if (component == ensemble->components.end()) {
        throw std::runtime_error("No component found for service");
    }

    auto subchannel = getSubchannel(ensemble->subchannels, (*component)->subchId);
    if (subchannel == ensemble->subchannels.end()) {
        throw std::runtime_error("Could not find subchannel associated with service");
    }

    return (*subchannel)->type;
}

bool DabService::isProgramme(const std::shared_ptr<dabEnsemble>& ensemble) const
{
    switch (getType(ensemble)) {
        case subchannel_type_t::DABAudio:
        case subchannel_type_t::DABPlusAudio:
            return true;
        case subchannel_type_t::DataDmb:
        case subchannel_type_t::Packet:
            return false;
        default:
            etiLog.log(error, "Error, unknown service type: %u", getType(ensemble));
            throw logic_error("DabService::isProgramme unknown service type");
    }
}


unsigned char DabService::nbComponent(const vec_sp_component& components) const
{
    size_t count = std::count_if(components.begin(), components.end(),
            [&](const shared_ptr<DabComponent>& c) { return c->serviceId == id;} );

    if (count > 0xFF) {
        throw std::logic_error("Invalid number of components in service");
    }
    return count;
}

void DabService::set_parameter(const string& parameter, const string& value)
{
    if (parameter == "label") {
        vector<string> fields;
        boost::split(fields, value, boost::is_any_of(","));
        if (fields.size() != 2) {
            throw ParameterError("Parameter 'label' must have format"
                   " 'label,shortlabel'");
        }
        int success = this->label.setLabel(fields[0], fields[1]);
        stringstream ss;
        switch (success) {
            case 0:
                break;
            case -1:
                ss << "Short label " <<
                    fields[1] << " is not subset of label '" <<
                    fields[0] << "'";
                throw ParameterError(ss.str());
            case -2:
                ss << "Short label " <<
                    fields[1] << " is too long (max 8 characters)";
                throw ParameterError(ss.str());
            case -3:
                ss << "Label " <<
                    fields[0] << " is too long (max 16 characters)";
                throw ParameterError(ss.str());
            default:
                ss << m_rc_name << " short label definition: program error !";
                etiLog.level(error) << ss.str();
                throw ParameterError(ss.str());
        }
    }
    else if (parameter == "pty") {
        int newpty = std::stoi(value); // International code, 5 bits

        if (newpty >= 0 and newpty < (1<<5)) {
            pty_settings.pty = newpty;
        }
        else {
            throw ParameterError("PTy value is out of bounds");
        }
    }
    else if (parameter == "ptysd") {
        if (value == "static") {
            pty_settings.dynamic_no_static = false;
        }
        else if (value == "dynamic") {
            pty_settings.dynamic_no_static = true;
        }
        else {
            throw ParameterError("Invalid value for ptysd, use static or dynamic");
        }
    }
    else {
        stringstream ss;
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
}

const string DabService::get_parameter(const string& parameter) const
{
    stringstream ss;
    if (parameter == "label") {
        ss << label.long_label() << "," << label.short_label();
    }
    else if (parameter == "pty") {
        ss << (int)pty_settings.pty;
    }
    else if (parameter == "ptysd") {
        ss << (pty_settings.dynamic_no_static ? "dynamic" : "static");
    }
    else {
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
    return ss.str();
}

void dabEnsemble::set_parameter(const string& parameter, const string& value)
{
    if (parameter == "localtimeoffset") {
        if (value == "auto") {
            lto_auto = true;
        }
        else {
            lto_auto = false;
            int new_lto = atol(value.c_str());

            if (new_lto < -24) {
                throw ParameterError("Desired local time offset too small."
                        " Minimum -24" );
            }
            else if (new_lto > 24) {
                throw ParameterError("Desired local time offset too large."
                        " Maximum 24" );
            }

            this->lto = new_lto;
        }
    }
    else {
        stringstream ss;
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
}

const string dabEnsemble::get_parameter(const string& parameter) const
{
    stringstream ss;
    if (parameter == "localtimeoffset") {
        if (this->lto_auto) {
            ss << "auto(" << this->lto << ")";
        }
        else {
            ss << this->lto;
        }
    }
    else {
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
    return ss.str();
}

bool dabEnsemble::validate_linkage_sets()
{
    for (const auto& ls : linkagesets) {
        const std::string keyserviceuid = ls->keyservice;
        if (keyserviceuid.empty()) {
            if (not ls->id_list.empty()) {
                etiLog.log(error, "Linkage set 0x%04x with empty key service "
                        "should have an empty list.", ls->lsn);
                return false;
            }
        }
        else {
            const auto& keyservice = std::find_if(
                    services.cbegin(),
                    services.cend(),
                    [&](const std::shared_ptr<DabService>& srv) {
                    return srv->uid == keyserviceuid;
                    });

            if (keyservice == services.end()) {
                etiLog.log(error, "Invalid key service %s in linkage set 0x%04x",
                        keyserviceuid.c_str(), ls->lsn);
                return false;
            }

            // need to add key service to num_ids
            const size_t num_ids = 1 + ls->id_list.size();
            if (num_ids > 0x0F) {
                etiLog.log(error,
                        "Too many links for linkage set 0x%04x",
                        ls->lsn);
                return false;
            }
        }
    }

    return true;
}

unsigned short DabSubchannel::getSizeCu() const
{
    if (protection.form == UEP) {
        return Sub_Channel_SizeTable[protection.uep.tableIndex];
    }
    else if (protection.form == EEP) {
        switch (protection.eep.profile) {
        case EEP_A:
            switch (protection.level) {
            case 0:
                return (bitrate * 12) >> 3;
                break;
            case 1:
                return bitrate;
                break;
            case 2:
                return (bitrate * 6) >> 3;
                break;
            case 3:
                return (bitrate >> 1);
                break;
            default: // Should not happens
                etiLog.log(error, "Bad protection level on subchannel");
                return 0;
            }
            break;
        case EEP_B:
            switch (protection.level) {
            case 0:
                return (bitrate * 27) >> 5;
                break;
            case 1:
                return (bitrate * 21) >> 5;
                break;
            case 2:
                return (bitrate * 18) >> 5;
                break;
            case 3:
                return (bitrate * 15) >> 5;
                break;
            default: // Should not happens
                etiLog.log(error, "Bad protection level on subchannel");
                return 0;
            }
            break;
        default:
            etiLog.log(error, "Invalid protection option");
            return 0;
        }
    }
    return 0;
}

unsigned short DabSubchannel::getSizeByte() const
{
    return bitrate * 3;
}

unsigned short DabSubchannel::getSizeWord() const
{
    return (bitrate * 3) >> 2;
}

unsigned short DabSubchannel::getSizeDWord() const
{
    return (bitrate * 3) >> 3;
}

size_t DabSubchannel::readFrame(uint8_t *buffer, size_t size, std::time_t seconds, int utco, uint32_t tsta)
{
    switch (input->getBufferManagement()) {
        case Inputs::BufferManagement::Prebuffering:
            return input->readFrame(buffer, size);
        case Inputs::BufferManagement::Timestamped:
            return input->readFrame(buffer, size, seconds, utco, tsta);
    }
    throw logic_error("Unhandled case");
}

LinkageSet::LinkageSet(const std::string& name,
        uint16_t lsn,
        bool active,
        bool hard,
        bool international) :
    lsn(lsn),
    active(active),
    hard(hard),
    international(international),
    m_name(name)
{}


LinkageSet LinkageSet::filter_type(const ServiceLinkType type)
{
    LinkageSet lsd(m_name, lsn, active, hard, international);

    lsd.active = active;
    lsd.keyservice = keyservice;

    for (const auto& link : id_list) {
        if (link.type == type) {
            lsd.id_list.push_back(link);
        }
    }

    return lsd;
}