aboutsummaryrefslogtreecommitdiffstats
path: root/src/DabMux.cpp
blob: 5d109fa47ed7a76ee268eacc4708cf1def17135b (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
/*
   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) 2017
   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/>.
*/

#ifdef HAVE_CONFIG_H
#   include "config.h"
#endif

#include <stdlib.h>
#include <memory>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/info_parser.hpp>
#include <cstdio>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cstring>
#include <string>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>

// for basename
#include <libgen.h>

#include <iterator>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <functional>
#include <algorithm>

#ifdef _WIN32
#   include <time.h>
#   include <process.h>
#   include <io.h>
#   include <conio.h>
#   include <winsock2.h> // For types...
typedef u_char uint8_t;
typedef WORD uint16_t;
typedef DWORD32 uint32_t;

#   ifndef __MINGW32__
#       include "xgetopt.h"
#   endif
#   define read _read
#   define snprintf _snprintf 
#   define sleep(a) Sleep((a) * 1000)
#else
#   include <netinet/in.h>
#   include <unistd.h>
#   include <sys/time.h>
#   include <sys/wait.h>
#   include <sys/socket.h>
#   include <sys/ioctl.h>
#   include <sys/times.h>
#   include <sys/resource.h>

#endif

#include <time.h>

#ifdef _WIN32
#   pragma warning ( disable : 4103 )
#   include "Eti.h"
#   pragma warning ( default : 4103 )
#else
#   include "Eti.h"
#endif

#include "input/Prbs.h"
#include "input/Zmq.h"

#include "dabOutput/dabOutput.h"
#include "crc.h"
#include "UdpSocket.h"
#include "InetAddress.h"
#include "PcDebug.h"
#include "DabMux.h"
#include "MuxElements.h"
#include "utils.h"
#include "ConfigParser.h"
#include "ManagementServer.h"
#include "Log.h"
#include "RemoteControl.h"

using namespace std;
using boost::property_tree::ptree;
using boost::property_tree::ptree_error;

volatile sig_atomic_t running = 1;

/* We are not allowed to use etiLog in the signal handler,
 * because etiLog uses mutexes
 */
void signalHandler(int signum)
{
#ifdef _WIN32
    fprintf(stderr, "\npid: %i\n", _getpid());
#else
    fprintf(stderr, "\npid: %i, ppid: %i\n", getpid(), getppid());
#endif
#define SIG_MSG "Signal received: "
    switch (signum) {
#ifndef _WIN32
    case SIGHUP:
        fprintf(stderr, SIG_MSG "SIGHUP\n");
        break;
    case SIGQUIT:
        fprintf(stderr, SIG_MSG "SIGQUIT\n");
        break;
    case SIGPIPE:
        fprintf(stderr, SIG_MSG "SIGPIPE\n");
        return;
        break;
#endif
    case SIGINT:
        fprintf(stderr, SIG_MSG "SIGINT\n");
        break;
    case SIGTERM:
        fprintf(stderr, SIG_MSG "SIGTERM\n");
        fprintf(stderr, "Exiting software\n");
        exit(0);
        break;
    default:
        fprintf(stderr, SIG_MSG "number %i\n", signum);
    }
#ifndef _WIN32
    killpg(0, SIGPIPE);
#endif
    running = 0;
}


int main(int argc, char *argv[])
{
    header_message();

    struct sigaction sa;
    memset(&sa, 0, sizeof(struct sigaction));
    sa.sa_handler = &signalHandler;

    const int sigs[] = {SIGHUP, SIGQUIT, SIGINT, SIGTERM};
    for (int sig : sigs) {
        if (sigaction(sig, &sa, nullptr) == -1) {
            perror("sigaction");
            return EXIT_FAILURE;
        }
    }

#ifdef _WIN32
    if (SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST) == 0) {
        etiLog.log(warn, "Can't increase priority: %s\n",
                strerror(errno));
    }
#else
    // Use the lowest real-time priority for this thread, and switch to real-time scheduling
    const int policy = SCHED_RR;
    sched_param sp;
    sp.sched_priority = sched_get_priority_min(policy);
    int thread_prio_ret = pthread_setschedparam(pthread_self(), policy, &sp);
    if (thread_prio_ret != 0) {
        etiLog.level(error) << "Could not set real-time priority for thread:" << thread_prio_ret;
    }
#endif




    int returnCode = 0;

    ptree pt;
    std::vector<std::shared_ptr<DabOutput> > outputs;

    try {
        if (argc == 2) { // Assume the only argument is a config file
            string conf_file = argv[1];

            if (conf_file == "-h") {
                printUsage(argv[0], stdout);
                throw MuxInitException("Nothing to do");
            }

            try {
                read_info(conf_file, pt);

            }
            catch (runtime_error &e) {
                throw MuxInitException(e.what());
            }
        }
        else if (argc > 1 && strncmp(argv[1], "-e", 2) == 0) { // use external config file
            try {

                if (argc != 3) {
                    printUsage(argv[0], stderr);
                    throw MuxInitException();
                }

                string conf_file = argv[2];

                read_info(conf_file, pt);
            }
            catch (runtime_error &e) {
                throw MuxInitException(e.what());
            }
        }
        else {
            throw MuxInitException("No configuration file specified");
        }

        /* Enable Logging to syslog conditionally */
        if (pt.get<bool>("general.syslog", false)) {
            etiLog.register_backend(std::make_shared<LogToSyslog>());
        }

        int mgmtserverport = pt.get<int>("general.managementport",
                             pt.get<int>("general.statsserverport", 0) );

        /* Management: stats and config server */
        get_mgmt_server().open(mgmtserverport);

        /************** READ REMOTE CONTROL PARAMETERS *************/
        int telnetport = pt.get<int>("remotecontrol.telnetport", 0);
        if (telnetport != 0) {
            auto rc = std::make_shared<RemoteControllerTelnet>(telnetport);
            rcs.add_controller(rc);
        }

        auto zmqendpoint = pt.get<string>("remotecontrol.zmqendpoint", "");
        if (not zmqendpoint.empty()) {
            auto rc = std::make_shared<RemoteControllerZmq>(zmqendpoint);
            rcs.add_controller(rc);
        }

        DabMultiplexer mux(pt);

        etiLog.level(info) <<
                PACKAGE_NAME << " " <<
#if defined(GITVERSION)
                GITVERSION <<
#else
                PACKAGE_VERSION <<
#endif
                " starting up";


        edi_configuration_t edi_conf;

        /******************** READ OUTPUT PARAMETERS ***************/
        set<string> all_output_names;
        ptree pt_outputs = pt.get_child("outputs");
        for (auto ptree_pair : pt_outputs) {
            string outputuid = ptree_pair.first;

            // check for uniqueness of the uid
            if (all_output_names.count(outputuid) == 0) {
                all_output_names.insert(outputuid);
            }
            else {
                stringstream ss;
                ss << "output with uid " << outputuid << " not unique!";
                throw runtime_error(ss.str());
            }

            if (outputuid == "edi") {
#if HAVE_OUTPUT_EDI
                ptree pt_edi = pt_outputs.get_child("edi");
                for (auto pt_edi_dest : pt_edi.get_child("destinations")) {
                    edi_destination_t dest;
                    dest.dest_addr   = pt_edi_dest.second.get<string>("destination");
                    dest.ttl         = pt_edi_dest.second.get<unsigned int>("ttl", 1);

                    dest.source_addr = pt_edi_dest.second.get<string>("source", "");
                    dest.source_port = pt_edi_dest.second.get<unsigned int>("sourceport");

                    edi_conf.destinations.push_back(dest);
                }

                edi_conf.dest_port           = pt_edi.get<unsigned int>("port");

                edi_conf.dump                = pt_edi.get<bool>("dump");
                edi_conf.enable_pft          = pt_edi.get<bool>("enable_pft");
                edi_conf.verbose             = pt_edi.get<bool>("verbose");

                edi_conf.fec                 = pt_edi.get<unsigned int>("fec", 3);
                edi_conf.chunk_len           = pt_edi.get<unsigned int>("chunk_len", 207);

                double interleave_ms         = pt_edi.get<double>("interleave", 0);
                if (interleave_ms != 0.0) {
                    if (interleave_ms < 0) {
                        throw runtime_error("EDI output: negative interleave value is invalid.");
                    }

                    auto latency_rounded = lround(interleave_ms / 24.0);
                    if (latency_rounded * 24 > 30000) {
                        throw runtime_error("EDI output: interleaving set for more than 30 seconds!");
                    }

                    edi_conf.latency_frames = latency_rounded;
                }

                edi_conf.tagpacket_alignment = pt_edi.get<unsigned int>("tagpacket_alignment", 8);

                mux.set_edi_config(edi_conf);
#else
                throw runtime_error("EDI output not compiled in");
#endif
            }
            else {
                string uri = pt_outputs.get<string>(outputuid);

                size_t proto_pos = uri.find("://");
                if (proto_pos == std::string::npos) {
                    stringstream ss;
                    ss << "Output with uid " << outputuid << " no protocol defined!";
                    throw runtime_error(ss.str());
                }

                string proto = uri.substr(0, proto_pos);
                string location = uri.substr(proto_pos + 3);

                std::shared_ptr<DabOutput> output;

                if (0) {
#if defined(HAVE_OUTPUT_FILE)
                } else if (proto == "file") {
                    output = make_shared<DabOutputFile>();
#endif // defined(HAVE_OUTPUT_FILE)
#if defined(HAVE_OUTPUT_FIFO)
                } else if (proto == "fifo") {
                    output = make_shared<DabOutputFifo>();
#endif // !defined(HAVE_OUTPUT_FIFO)
#if defined(HAVE_OUTPUT_RAW)
                } else if (proto == "raw") {
                    output = make_shared<DabOutputRaw>();
#endif // defined(HAVE_OUTPUT_RAW)
#if defined(HAVE_OUTPUT_UDP)
                } else if (proto == "udp") {
                    output = make_shared<DabOutputUdp>();
#endif // defined(HAVE_OUTPUT_UDP)
#if defined(HAVE_OUTPUT_TCP)
                } else if (proto == "tcp") {
                    output = make_shared<DabOutputTcp>();
#endif // defined(HAVE_OUTPUT_TCP)
#if defined(HAVE_OUTPUT_SIMUL)
                } else if (proto == "simul") {
                    output = make_shared<DabOutputSimul>();
#endif // defined(HAVE_OUTPUT_SIMUL)
#if defined(HAVE_OUTPUT_ZEROMQ)
                } else if (proto == "zmq+tcp") {
                    output = make_shared<DabOutputZMQ>("tcp");
                } else if (proto == "zmq+ipc") {
                    output = make_shared<DabOutputZMQ>("ipc");
                } else if (proto == "zmq+pgm") {
                    output = make_shared<DabOutputZMQ>("pgm");
                } else if (proto == "zmq+epgm") {
                    output = make_shared<DabOutputZMQ>("epgm");
#endif // defined(HAVE_OUTPUT_ZEROMQ)
                } else {
                    etiLog.level(error) << "Output protocol unknown: " << proto;
                    throw MuxInitException();
                }

                if (not output) {
                    etiLog.level(error) <<
                        "Unable to init output " <<
                        uri;
                    return -1;
                }

                if (output->Open(location) == -1) {
                    etiLog.level(error) <<
                        "Unable to open output " <<
                        uri;
                    return -1;
                }

                outputs.push_back(output);

            }
        }


        if (outputs.size() == 0) {
            etiLog.log(alert, "no output defined");
            throw MuxInitException();
        }

        mux.prepare();
        mux.print_info();

        etiLog.log(info, "--- Output list ---");
        printOutputs(outputs);

#if HAVE_OUTPUT_EDI
        if (edi_conf.enabled()) {
            etiLog.level(info) << "EDI";
            etiLog.level(info) << " verbose     " << edi_conf.verbose;
            for (auto& edi_dest : edi_conf.destinations) {
                etiLog.level(info) << " to " << edi_dest.dest_addr << ":" << edi_conf.dest_port;
                if (not edi_dest.source_addr.empty()) {
                    etiLog.level(info) << "  source      " << edi_dest.source_addr;
                    etiLog.level(info) << "  ttl         " << edi_dest.ttl;
                }
                etiLog.level(info) << "  source port " << edi_dest.source_port;
            }
            if (edi_conf.interleaver_enabled()) {
                etiLog.level(info) << " interleave     " << edi_conf.latency_frames * 24 << " ms";
            }
        }
#endif

        size_t limit = pt.get("general.nbframes", 0);

        etiLog.level(info) << "Start loop";
        /*   Each iteration of the main loop creates one ETI frame */
        size_t currentFrame;
        for (currentFrame = 0; running; currentFrame++) {
            mux.mux_frame(outputs);

            if (limit && currentFrame >= limit) {
                break;
            }

            /* Check every six seconds if the remote control is still working */
            if (currentFrame % 250 == 249) {
                rcs.check_faults();
            }

            /* Same for statistics server */
            if (currentFrame % 10 == 0) {
                ManagementServer& mgmt_server = get_mgmt_server();

                if (mgmt_server.fault_detected()) {
                    etiLog.level(warn) <<
                        "Detected Management Server fault, restarting it";
                    mgmt_server.restart();
                }

                mgmt_server.update_ptree(pt);
            }
        }

        if (limit) {
            etiLog.level(info) << "Max number of ETI frames reached: " << currentFrame;
        }
    }
    catch (const MuxInitException& except) {
        etiLog.level(error) << "Multiplex initialisation aborted: " <<
            except.what();
        returnCode = 1;
    }
    catch (const std::invalid_argument& except) {
        etiLog.level(error) << "Caught invalid argument : " << except.what();
        returnCode = 1;
    }
    catch (const std::out_of_range& except) {
        etiLog.level(error) << "Caught out of range exception : " << except.what();
        returnCode = 1;
    }
    catch (const std::runtime_error& except) {
        etiLog.level(error) << "Caught runtime error : " << except.what();
        returnCode = 2;
    }

    etiLog.log(debug, "exiting...\n");
    fflush(stderr);

    outputs.clear();

    if (returnCode != 0) {
        etiLog.log(alert, "...aborting\n");
    } else {
        etiLog.log(debug, "...done\n");
    }

    return returnCode;
}