main.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
  22 #include <stdint.h>
  23 #include <libsigrok/libsigrok.h>
  24
  25 #include <getopt.h>
  26
  27 #include <QtGui/QApplication>
  28 #include <QDebug>
  29
  30 #include "signalhandler.h"
  31 #include "pv/mainwindow.h"
  32
  33 #include "config.h"
  34
  35 void usage()
  36 {
  37         fprintf(stdout,
  38                 "Usage:\n"
  39                 "  %s [OPTION…] [FILE] — %s\n"
  40                 "\n"
  41                 "Help Options:\n"
  42                 "  -l, --loglevel                  Set libsigrok/libsigrokdecode loglevel\n"
  43                 "  -V, --version                   Show release version\n"
  44                 "  -h, -?, --help                  Show help option\n"
  45                 "\n", PV_BIN_NAME, PV_DESCRIPTION);
  46 }
  47
  48 int main(int argc, char *argv[])
  49 {
  50         int ret = 0;
  51         struct sr_context *sr_ctx = NULL;
  52         const char *open_file = NULL;
  53
  54         QApplication a(argc, argv);
  55
  56         // Set some application metadata
  57         QApplication::setApplicationVersion(PV_VERSION_STRING);
  58         QApplication::setApplicationName("PulseView");
  59         QApplication::setOrganizationDomain("http://www.sigrok.org");
  60
  61         // Parse arguments
  62         while (1) {
  63                 static const struct option long_options[] = {
  64                         {"loglevel", required_argument, 0, 'l'},
  65                         {"version", no_argument, 0, 'V'},
  66                         {"help", no_argument, 0, 'h'},
  67                         {0, 0, 0, 0}
  68                 };
  69
  70                 const int c = getopt_long(argc, argv,
  71                         "l:Vh?", long_options, NULL);
  72                 if (c == -1)
  73                         break;
  74
  75                 switch (c) {
  76                 case 'l':
  77                 {
  78                         const int loglevel = atoi(optarg);
  79                         sr_log_loglevel_set(loglevel);
  80                         srd_log_loglevel_set(loglevel);
  81                         break;
  82                 }
  83
  84                 case 'V':
  85                         // Print version info
  86                         fprintf(stdout, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
  87                         return 0;
  88
  89                 case 'h':
  90                 case '?':
  91                         usage();
  92                         return 0;
  93                 }
  94         }
  95
  96         if (argc - optind > 1) {
  97                 fprintf(stderr, "Only one file can be openened.\n");
  98                 return 1;
  99         } else if (argc - optind == 1)
 100                 open_file = argv[argc - 1];
 101
 102         // Initialise libsigrok
 103         if (sr_init(&sr_ctx) != SR_OK) {
 104                 qDebug() << "ERROR: libsigrok init failed.";
 105                 return 1;
 106         }
 107
 108         // Initialise libsigrokdecode
 109         if (srd_init(NULL) == SRD_OK) {
 110
 111                 // Load the protocol decoders
 112                 srd_decoder_load_all();
 113
 114                 // Initialize all libsigrok drivers
 115                 sr_dev_driver **const drivers = sr_driver_list();
 116                 for (sr_dev_driver **driver = drivers; *driver; driver++) {
 117                         if (sr_driver_init(sr_ctx, *driver) != SR_OK) {
 118                                 qDebug("Failed to initialize driver %s",
 119                                         (*driver)->name);
 120                                 ret = 1;
 121                                 break;
 122                         }
 123                 }
 124
 125                 if (ret == 0) {
 126                         // Initialise the main window
 127                         pv::MainWindow w(open_file);
 128                         w.show();
 129
 130                         if(SignalHandler::prepare_signals()) {
 131                                 SignalHandler *const handler =
 132                                         new SignalHandler(&w);
 133                                 QObject::connect(handler,
 134                                         SIGNAL(int_received()),
 135                                         &w, SLOT(close()));
 136                                 QObject::connect(handler,
 137                                         SIGNAL(term_received()),
 138                                         &w, SLOT(close()));
 139                         } else {
 140                                 qWarning() <<
 141                                         "Could not prepare signal handler.";
 142                         }
 143
 144                         // Run the application
 145                         ret = a.exec();
 146                 }
 147
 148                 // Destroy libsigrokdecode and libsigrok
 149                 srd_exit();
 150
 151         } else {
 152                 qDebug() << "ERROR: libsigrokdecode init failed.";
 153         }
 154
 155         if (sr_ctx)
 156                 sr_exit(sr_ctx);
 157
 158         return ret;
 159 }