mirror of
https://github.com/JvanKatwijk/dab-cmdline
synced 2025-10-06 08:02:52 +02:00
412 lines
12 KiB
C++
412 lines
12 KiB
C++
#
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/*
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* Copyright (C) 2015, 2016, 2017
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* Jan van Katwijk (J.vanKatwijk@gmail.com)
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* Lazy Chair Computing
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*
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* This file is part of the DAB-library
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*
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* DAB-library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* DAB-library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DAB-library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* E X A M P L E P R O G R A M
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* This program might (or might not) be used to mould the interface to
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* your wishes. Do not take it as a definitive and "ready" program
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* for the DAB-library
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <getopt.h>
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#include <cstdio>
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#include <iostream>
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#include <complex>
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#include <vector>
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#include "audiosink.h"
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#include "filesink.h"
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#include "dab-api.h"
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#include "includes/support/band-handler.h"
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#include "stdin-handler.h"
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#include <locale>
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#include <codecvt>
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#include <atomic>
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#include <string>
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using std::cerr;
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using std::endl;
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#define MHz(x) (x * 1000000)
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void printOptions (void); // forward declaration
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// we deal with callbacks from different threads. So, if you extend
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// the functions, take care and add locking whenever needed
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static
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std::atomic<bool> run;
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static
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void *theRadio = NULL;
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static
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std::atomic<bool>timeSynced;
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static
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std::atomic<bool>timesyncSet;
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static
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std::atomic<bool>ensembleRecognized;
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static
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audioBase *soundOut = NULL;
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#ifdef DATA_STREAMER
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tcpServer tdcServer (8888);
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#endif
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std::string programName = "Sky Radio";
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static void sighandler (int signum) {
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fprintf (stderr, "Signal caught, terminating!\n");
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run. store (false);
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}
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static
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void syncsignalHandler (bool b, void *userData) {
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timeSynced. store (b);
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timesyncSet. store (true);
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(void)userData;
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}
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//
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// This function is called whenever the dab engine has taken
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// some time to gather information from the FIC bloks
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// the Boolean b tells whether or not an ensemble has been
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// recognized, the names of the programs are in the
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// ensemble
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static
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void name_of_ensemble (const std::string &name, int Id, void *userData) {
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fprintf (stderr, "ensemble %s is (%X) recognized\n",
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name. c_str (), (uint32_t)Id);
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ensembleRecognized. store (true);
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}
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std::vector<std::string> programNames;
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std::vector<int> programSIds;
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#include <bits/stdc++.h>
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std::unordered_map <int, std::string> ensembleContents;
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static
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void serviceName (const std::string &s, int SId,
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uint16_t subChId, void *userdata) {
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for (std::vector<std::string>::iterator it = programNames.begin();
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it != programNames. end(); ++it)
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if (*it == s)
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return;
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ensembleContents. insert (pair <int, std::string> (SId, s));
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programNames. push_back (s);
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programSIds . push_back (SId);
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std::cerr << "program " << s << " is part of the ensemble\n";
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}
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static
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void programdata_Handler (audiodata *d, void *ctx) {
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(void)ctx;
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std::cerr << "\tstartaddress\t= " << d -> startAddr << "\n";
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std::cerr << "\tlength\t\t= " << d -> length << "\n";
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std::cerr << "\tsubChId\t\t= " << d -> subchId << "\n";
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std::cerr << "\tprotection\t= " << d -> protLevel << "\n";
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std::cerr << "\tbitrate\t\t= " << d -> bitRate << "\n";
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}
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//
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// The function is called from within the library with
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// a string, the so-called dynamic label
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static
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void dataOut_Handler (const char *dynamicLabel, void *ctx) {
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(void)ctx;
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std::cerr << dynamicLabel << "\r";
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}
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//
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// The function is called from the MOT handler, with
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// as parameters the filename where the picture is stored
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// d denotes the subtype of the picture
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// typedef void (*motdata_t)(std::string, int, void *);
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void motdata_Handler (uint8_t * data, int size,
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const char *name, int d, void *ctx) {
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(void)data; (void)size; (void)name; (void)d; (void)ctx;
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// fprintf (stderr, "plaatje %s\n", s. c_str ());
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}
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//
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// Note: the function is called from the tdcHandler with a
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// frame, either frame 0 or frame 1.
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// The frames are packed bytes, here an additional header
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// is added, a header of 8 bytes:
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// the first 4 bytes for a pattern 0xFF 0x00 0xFF 0x00 0xFF
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// the length of the contents, i.e. framelength without header
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// is stored in bytes 5 (high byte) and byte 6.
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// byte 7 contains 0x00, byte 8 contains 0x00 for frametype 0
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// and 0xFF for frametype 1
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// Note that the callback function is executed in the thread
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// that executes the tdcHandler code.
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static
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void bytesOut_Handler (uint8_t *data, int16_t amount,
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uint8_t type, void *ctx) {
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(void)data;
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(void)amount;
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(void)type;
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(void)ctx;
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}
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//
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// This function is overloaded. In the normal form it
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// handles a buffer full of PCM samples. We pass them on to the
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// audiohandler, based on portaudio. Feel free to modify this
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// and send the samples elsewhere
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//
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// However, in the "special mode", the aac frames are send out
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// Obviously, the parameters "rate" and "isStereo" are meaningless
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// then.
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static
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void pcmHandler (int16_t *buffer, int size, int rate,
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bool isStereo, void *ctx) {
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static bool isStarted = false;
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(void)isStereo;
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if (!isStarted) {
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soundOut -> restart ();
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isStarted = true;
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}
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soundOut -> audioOut (buffer, size, rate);
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}
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static
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void systemData (bool flag, int16_t snr, int32_t freqOff, void *ctx) {
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// fprintf (stderr, "synced = %s, snr = %d, offset = %d\n",
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// flag? "on":"off", snr, freqOff);
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}
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static
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void fibQuality (int16_t q, void *ctx) {
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// fprintf (stderr, "fic quality = %d\n", q);
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}
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static
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void mscQuality (int16_t fe, int16_t rsE, int16_t aacE, void *ctx) {
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// fprintf (stderr, "msc quality = %d %d %d\n", fe, rsE, aacE);
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}
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int main (int argc, char **argv) {
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// Default values
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uint8_t theMode = 1;
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std::string soundChannel = "default";
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int16_t latency = 10;
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int16_t timeSyncTime = 5;
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int16_t freqSyncTime = 5;
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int opt;
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struct sigaction sigact;
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bandHandler dabBand;
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deviceHandler *theDevice;
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bool err;
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std::cerr << "dab_cmdline example 7,\n \
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Copyright 2017 J van Katwijk, Lazy Chair Computing\n";
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timeSynced. store (false);
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timesyncSet. store (false);
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run. store (false);
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std::wcout.imbue(std::locale("en_US.utf8"));
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if (argc == 1) {
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printOptions ();
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exit (1);
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}
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std::setlocale (LC_ALL, "en-US.utf8");
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// For file input we do not need options like Q, G and C,
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// We do need an option to specify the filename
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while ((opt = getopt (argc, argv, "D:d:M:B:P:A:L:S:F:O:R")) != -1) {
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switch (opt) {
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case 'D':
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freqSyncTime = atoi (optarg);
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break;
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case 'd':
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timeSyncTime = atoi (optarg);
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break;
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case 'M':
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theMode = atoi (optarg);
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if (!((theMode == 1) || (theMode == 2) || (theMode == 4)))
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theMode = 1;
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break;
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case 'P':
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programName = optarg;
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break;
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case 'O':
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soundOut = new fileSink (std::string (optarg), &err);
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if (!err) {
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std::cerr << "sorry, could not open file\n";
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exit (32);
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}
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break;
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case 'A':
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soundChannel = optarg;
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break;
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case 'S': {
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std::stringstream ss;
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ss << std::hex << optarg;
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break;
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}
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default:
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printOptions ();
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exit (1);
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}
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}
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//
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sigact.sa_handler = sighandler;
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sigemptyset(&sigact.sa_mask);
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sigact.sa_flags = 0;
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try {
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theDevice = new stdinHandler ();
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}
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catch (std::exception& ex) {
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std::cerr << "allocating device failed (" << ex. what () << "), fatal\n";
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exit (1);
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}
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//
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if (soundOut == NULL) { // not bound to a file?
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soundOut = new audioSink (latency, soundChannel, &err);
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if (err) {
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std::cerr << "no valid sound channel, fatal\n";
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exit (33);
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}
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}
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// and with a sound device we now can create a "backend"
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API_struct interface;
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interface. dabMode = theMode;
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interface. thresholdValue = 6;
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interface. syncsignal_Handler = syncsignalHandler;
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interface. systemdata_Handler = systemData;
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interface. name_of_ensemble = name_of_ensemble;
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interface. serviceName = serviceName;
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interface. fib_quality_Handler = fibQuality;
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interface. audioOut_Handler = pcmHandler;
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interface. dataOut_Handler = dataOut_Handler;
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interface. bytesOut_Handler = bytesOut_Handler;
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interface. programdata_Handler = programdata_Handler;
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interface. program_quality_Handler = mscQuality;
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interface. motdata_Handler = motdata_Handler;
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interface. tii_data_Handler = nullptr;
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interface. timeHandler = nullptr;
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// and with a sound device we now can create a "backend"
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theRadio = dabInit (theDevice,
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&interface,
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nullptr, // no spectrum shown
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nullptr, // no constellations
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nullptr // Ctx
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);
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if (theRadio == NULL) {
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std::cerr << "sorry, no radio available, fatal\n";
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exit (4);
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}
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theDevice -> restartReader (MHz (220)); // freq is dummy here
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//
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// The device should be working right now
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timesyncSet. store (false);
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ensembleRecognized. store (false);
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dabStartProcessing (theRadio);
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while (!timeSynced. load () && (--timeSyncTime >= 0))
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sleep (1);
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if (!timeSynced. load ()) {
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cerr << "There does not seem to be a DAB signal here" << endl;
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theDevice -> stopReader ();
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sleep (1);
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dabStop (theRadio);
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dabExit (theRadio);
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delete theDevice;
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exit (22);
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}
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else
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std::cerr << "there might be a DAB signal here" << endl;
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while (!ensembleRecognized. load () &&
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(--freqSyncTime >= 0)) {
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std::cerr << freqSyncTime + 1 << "\r";
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sleep (1);
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}
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std::cerr << "\n";
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if (!ensembleRecognized. load ()) {
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std::cerr << "no ensemble data found, fatal\n";
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theDevice -> stopReader ();
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sleep (1);
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dabReset (theRadio);
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dabExit (theRadio);
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delete theDevice;
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exit (22);
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}
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run. store (true);
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std::cerr << "we try to start program " <<
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programName << "\n";
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audiodata ad;
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if (!is_audioService (theRadio, programName. c_str ())) {
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std::cerr << "sorry we cannot handle service " <<
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programName << "\n";
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run. store (false);
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}
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if (run. load ()) {
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dataforAudioService (theRadio,
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programName. c_str (), ad, 0);
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if (!ad. defined) {
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std::cerr << "sorry we cannot handle service " <<
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programName << "\n";
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run. store (false);
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}
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}
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if (run. load ()) {
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dabReset_msc (theRadio);
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set_audioChannel (theRadio, ad);
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}
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while (run. load ())
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sleep (1);
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theDevice -> stopReader ();
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dabReset (theRadio);
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dabExit (theRadio);
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delete theDevice;
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delete soundOut;
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}
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void printOptions (void) {
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std::cerr <<
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" dab-cmdline options are\n\
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-D number amount of time to look for an ensemble\n\
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-d number seconds within a time sync should be reached\n\
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-M Mode Mode is 1, 2 or 4. Default is Mode 1\n\
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-B Band Band is either L_BAND or BAND_III (default)\n\
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-P name program to be selected in the ensemble\n\
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-A name select the audio channel (portaudio)\n\
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-O filename put the output into a file rather than through portaudio\n";
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}
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