summaryrefslogtreecommitdiffstats
path: root/src/MuxElements.cpp
blob: 13ce096722babb4ae1dca92c62f36fb4b2997047 (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
/*
   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) 2014
   Matthias P. Braendli, matthias.braendli@mpb.li
   */
/*
   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 "MuxElements.h"
#include <boost/algorithm/string.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
};



using namespace std;

int DabLabel::setLabel(const std::string& text)
{
    int len = text.length();
    if (len > 16)
        return -3;

    memset(m_text, 0, 17);
    memcpy(m_text, text.c_str(), len);

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

    return 0;
}

int DabLabel::setLabel(const std::string& text, const std::string& short_label)
{
    DabLabel newlabel;

    memset(newlabel.m_text, 0, 17);
    int len = text.length();
    if (len > 16)
        return -3;
    memcpy(newlabel.m_text, text.c_str(), len);

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

    // short label is valid.
    memcpy(this->m_text, newlabel.m_text, 17);
    this->m_flag = flag & 0xFFFF;

    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::setShortLabel(const std::string& slabel)
{
    char* end;
    const char* lab;
    uint16_t flag;
    flag = strtoul(slabel.c_str(), &end, 0);
    if (*end != 0) {
        lab = slabel.c_str();
        flag = 0;
        for (int i = 0; i < 32; ++i) {
            if (*lab == this->m_text[i]) {
                flag |= 0x8000 >> i;
                if (*(++lab) == 0) {
                    break;
                }
            }
        }
        if (*lab != 0) {
            return -1;
        }
    }
    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::short_label() const
{
    stringstream shortlabel;
    for (int i = 0; i < 32; ++i) {
        if (m_flag & 0x8000 >> i) {
            shortlabel << m_text[i];
        }
    }

    return shortlabel.str();
}


vector<dabSubchannel*>::iterator getSubchannel(
        vector<dabSubchannel*>& subchannels, int id)
{
    return find_if(
            subchannels.begin(),
            subchannels.end(),
            bind2nd(SubchannelId(), id)
            );
}

vector<dabComponent*>::iterator getComponent(
        vector<dabComponent*>& components,
        uint32_t serviceId,
        vector<dabComponent*>::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();
}


vector<dabComponent*>::iterator getComponent(
        vector<dabComponent*>& components,
        uint32_t serviceId) {
    return getComponent(components, serviceId, components.end());
}

vector<DabService*>::iterator getService(
        dabComponent* component,
        vector<DabService*>& services)
{
    vector<DabService*>::iterator service;

    for (service = services.begin(); service != services.end(); ++service) {
        if ((*service)->id == component->serviceId) {
            break;
        }
    }

    return service;
}

bool dabComponent::isPacketComponent(vector<dabSubchannel*>& subchannels)
{
    if (subchId > 63) {
        etiLog.log(error,
                "You must define subchannel id in the "
                "packet component before defining packet ");
        return false;
    }
    if (getSubchannel(subchannels, subchId) == subchannels.end()) {
        etiLog.log(error,
                "Invalid subchannel id in the packet component "
                "for defining packet ");
        return false;
    }
    if ((*getSubchannel(subchannels, subchId))->type != 3) {
        etiLog.log(error,
                "Invalid component type for defining packet ");
        return false;
    }
    return true;
}


unsigned char DabService::getType(dabEnsemble* ensemble)
{
    vector<dabSubchannel*>::iterator subchannel;
    vector<dabComponent*>::iterator component =
        getComponent(ensemble->components, id);
    if (component == ensemble->components.end()) {
        return 4;
    }
    subchannel = getSubchannel(ensemble->subchannels, (*component)->subchId);
    if (subchannel == ensemble->subchannels.end()) {
        return 8;
    }

    return (*subchannel)->type;
}

unsigned char DabService::nbComponent(vector<dabComponent*>& components)
{
    int nb = 0;
    vector<dabComponent*>::iterator current;

    for (current = components.begin(); current != components.end();
            ++current) {
        if ((*current)->serviceId == id) {
            ++nb;
        }
    }
    return nb;
}

void DabService::set_parameter(string parameter, string value)
{
    stringstream ss(value);
    ss.exceptions ( stringstream::failbit | stringstream::badbit );

    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 << "Ensemble short label " <<
                    fields[1] << " is not subset of label '" <<
                    fields[0] << "'";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            case -2:
                ss << "Ensemble short label " <<
                    fields[1] << " is too long (max 8 characters)";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            case -3:
                ss << "Ensemble label " <<
                    fields[0] << " is too long (max 16 characters)";
                etiLog.level(warn) << ss.str();
                throw ParameterError(ss.str());
            default:
                ss << "Ensemble short label definition: program error !";
                etiLog.level(emerg) << ss.str();
                throw ParameterError(ss.str());
        }
    }
    else {
        stringstream ss;
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
}

string DabService::get_parameter(string parameter)
{
    stringstream ss;
    if (parameter == "label") {
        char l[17];
        l[16] = '\0';
        memcpy(l, label.text(), 16);
        ss << l << "," << label.short_label();
    }
    else {
        ss << "Parameter '" << parameter <<
            "' is not exported by controllable " << get_rc_name();
        throw ParameterError(ss.str());
    }
    return ss.str();

}

unsigned short getSizeCu(dabSubchannel* subchannel)
{
    if (subchannel->protection.form == 0) {
        return Sub_Channel_SizeTable[subchannel->
            protection.shortForm.tableIndex];
    } else {
        dabProtectionLong* protection =
            &subchannel->protection.longForm;
        switch (protection->option) {
        case 0:
            switch (subchannel->protection.level) {
            case 0:
                return (subchannel->bitrate * 12) >> 3;
                break;
            case 1:
                return subchannel->bitrate;
                break;
            case 2:
                return (subchannel->bitrate * 6) >> 3;
                break;
            case 3:
                return (subchannel->bitrate >> 1);
                break;
            default: // Should not happens
                etiLog.log(error, "Bad protection level on "
                        "subchannel\n");
                return 0;
            }
            break;
        case 1:
            switch (subchannel->protection.level) {
            case 0:
                return (subchannel->bitrate * 27) >> 5;
                break;
            case 1:
                return (subchannel->bitrate * 21) >> 5;
                break;
            case 2:
                return (subchannel->bitrate * 18) >> 5;
                break;
            case 3:
                return (subchannel->bitrate * 15) >> 5;
                break;
            default: // Should not happens
                etiLog.log(error,
                        "Bad protection level on subchannel\n");
                return 0;
            }
            break;
        default:
            etiLog.log(error, "Invalid protection option\n");
            return 0;
        }
    }
    return 0;
}

unsigned short getSizeDWord(dabSubchannel* subchannel)
{
    return (subchannel->bitrate * 3) >> 3;
}

unsigned short getSizeByte(dabSubchannel* subchannel)
{
    return subchannel->bitrate * 3;
}


unsigned short getSizeWord(dabSubchannel* subchannel)
{
    return (subchannel->bitrate * 3) >> 2;
}