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 #ifdef ENABLE_SIGROKDECODE
  22 #include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
  23 #endif
  24
  25 #include <stdint.h>
  26 #include <libsigrok/libsigrok.h>
  27
  28 #include <getopt.h>
  29
  30 #include <QtGui/QApplication>
  31 #include <QDebug>
  32
  33 #include "signalhandler.h"
  34 #include "pv/mainwindow.h"
  35
  36 #include "config.h"
  37
  38 void usage()
  39 {
  40         fprintf(stdout,
  41                 "Usage:\n"
  42                 "  %s [OPTION…] [FILE] — %s\n"
  43                 "\n"
  44                 "Help Options:\n"
  45                 "  -l, --loglevel                  Set libsigrok/libsigrokdecode loglevel\n"
  46                 "  -V, --version                   Show release version\n"
  47                 "  -h, -?, --help                  Show help option\n"
  48                 "\n", PV_BIN_NAME, PV_DESCRIPTION);
  49 }
  50
  51 int main(int argc, char *argv[])
  52 {
  53         int ret = 0;
  54         struct sr_context *sr_ctx = NULL;
  55         const char *open_file = NULL;
  56
  57         QApplication a(argc, argv);
  58
  59         // Set some application metadata
  60         QApplication::setApplicationVersion(PV_VERSION_STRING);
  61         QApplication::setApplicationName("PulseView");
  62         QApplication::setOrganizationDomain("http://www.sigrok.org");
  63
  64         // Parse arguments
  65         while (1) {
  66                 static const struct option long_options[] = {
  67                         {"loglevel", required_argument, 0, 'l'},
  68                         {"version", no_argument, 0, 'V'},
  69                         {"help", no_argument, 0, 'h'},
  70                         {0, 0, 0, 0}
  71                 };
  72
  73                 const int c = getopt_long(argc, argv,
  74                         "l:Vh?", long_options, NULL);
  75                 if (c == -1)
  76                         break;
  77
  78                 switch (c) {
  79                 case 'l':
  80                 {
  81                         const int loglevel = atoi(optarg);
  82                         sr_log_loglevel_set(loglevel);
  83
  84 #ifdef ENABLE_SIGROKDECODE
  85                         srd_log_loglevel_set(loglevel);
  86 #endif
  87
  88                         break;
  89                 }
  90
  91                 case 'V':
  92                         // Print version info
  93                         fprintf(stdout, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
  94                         return 0;
  95
  96                 case 'h':
  97                 case '?':
  98                         usage();
  99                         return 0;
 100                 }
 101         }
 102
 103         if (argc - optind > 1) {
 104                 fprintf(stderr, "Only one file can be openened.\n");
 105                 return 1;
 106         } else if (argc - optind == 1)
 107                 open_file = argv[argc - 1];
 108
 109         // Initialise libsigrok
 110         if (sr_init(&sr_ctx) != SR_OK) {
 111                 qDebug() << "ERROR: libsigrok init failed.";
 112                 return 1;
 113         }
 114
 115         do {
 116
 117 #ifdef ENABLE_SIGROKDECODE
 118                 // Initialise libsigrokdecode
 119                 if (srd_init(NULL) != SRD_OK) {
 120                         qDebug() << "ERROR: libsigrokdecode init failed.";
 121                         break;
 122                 }
 123
 124                 // Load the protocol decoders
 125                 srd_decoder_load_all();
 126 #endif
 127
 128                 // Initialize all libsigrok drivers
 129                 sr_dev_driver **const drivers = sr_driver_list();
 130                 for (sr_dev_driver **driver = drivers; *driver; driver++) {
 131                         if (sr_driver_init(sr_ctx, *driver) != SR_OK) {
 132                                 qDebug("Failed to initialize driver %s",
 133                                         (*driver)->name);
 134                                 ret = 1;
 135                                 break;
 136                         }
 137                 }
 138
 139                 if (ret == 0) {
 140                         // Initialise the main window
 141                         pv::MainWindow w(open_file);
 142                         w.show();
 143
 144                         if(SignalHandler::prepare_signals()) {
 145                                 SignalHandler *const handler =
 146                                         new SignalHandler(&w);
 147                                 QObject::connect(handler,
 148                                         SIGNAL(int_received()),
 149                                         &w, SLOT(close()));
 150                                 QObject::connect(handler,
 151                                         SIGNAL(term_received()),
 152                                         &w, SLOT(close()));
 153                         } else {
 154                                 qWarning() <<
 155                                         "Could not prepare signal handler.";
 156                         }
 157
 158                         // Run the application
 159                         ret = a.exec();
 160                 }
 161
 162 #ifdef ENABLE_SIGROKDECODE
 163                 // Destroy libsigrokdecode
 164                 srd_exit();
 165 #endif
 166
 167         } while (0);
 168
 169         // Destroy libsigrok
 170         if (sr_ctx)
 171                 sr_exit(sr_ctx);
 172
 173         return ret;
 174 }