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 #ifdef ENABLE_SIGNALS
  34 #include "signalhandler.h"
  35 #endif
  36
  37 #include "pv/mainwindow.h"
  38
  39 #include "config.h"
  40
  41 void usage()
  42 {
  43         fprintf(stdout,
  44                 "Usage:\n"
  45                 "  %s [OPTION…] [FILE] — %s\n"
  46                 "\n"
  47                 "Help Options:\n"
  48                 "  -l, --loglevel                  Set libsigrok/libsigrokdecode loglevel\n"
  49                 "  -V, --version                   Show release version\n"
  50                 "  -h, -?, --help                  Show help option\n"
  51                 "\n", PV_BIN_NAME, PV_DESCRIPTION);
  52 }
  53
  54 int main(int argc, char *argv[])
  55 {
  56         int ret = 0;
  57         struct sr_context *sr_ctx = NULL;
  58         const char *open_file = NULL;
  59
  60         QApplication a(argc, argv);
  61
  62         // Set some application metadata
  63         QApplication::setApplicationVersion(PV_VERSION_STRING);
  64         QApplication::setApplicationName("PulseView");
  65         QApplication::setOrganizationDomain("http://www.sigrok.org");
  66
  67         // Parse arguments
  68         while (1) {
  69                 static const struct option long_options[] = {
  70                         {"loglevel", required_argument, 0, 'l'},
  71                         {"version", no_argument, 0, 'V'},
  72                         {"help", no_argument, 0, 'h'},
  73                         {0, 0, 0, 0}
  74                 };
  75
  76                 const int c = getopt_long(argc, argv,
  77                         "l:Vh?", long_options, NULL);
  78                 if (c == -1)
  79                         break;
  80
  81                 switch (c) {
  82                 case 'l':
  83                 {
  84                         const int loglevel = atoi(optarg);
  85                         sr_log_loglevel_set(loglevel);
  86
  87 #ifdef ENABLE_SIGROKDECODE
  88                         srd_log_loglevel_set(loglevel);
  89 #endif
  90
  91                         break;
  92                 }
  93
  94                 case 'V':
  95                         // Print version info
  96                         fprintf(stdout, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
  97                         return 0;
  98
  99                 case 'h':
 100                 case '?':
 101                         usage();
 102                         return 0;
 103                 }
 104         }
 105
 106         if (argc - optind > 1) {
 107                 fprintf(stderr, "Only one file can be openened.\n");
 108                 return 1;
 109         } else if (argc - optind == 1)
 110                 open_file = argv[argc - 1];
 111
 112         // Initialise libsigrok
 113         if (sr_init(&sr_ctx) != SR_OK) {
 114                 qDebug() << "ERROR: libsigrok init failed.";
 115                 return 1;
 116         }
 117
 118         do {
 119
 120 #ifdef ENABLE_SIGROKDECODE
 121                 // Initialise libsigrokdecode
 122                 if (srd_init(NULL) != SRD_OK) {
 123                         qDebug() << "ERROR: libsigrokdecode init failed.";
 124                         break;
 125                 }
 126
 127                 // Load the protocol decoders
 128                 srd_decoder_load_all();
 129 #endif
 130
 131                 // Initialize all libsigrok drivers
 132                 sr_dev_driver **const drivers = sr_driver_list();
 133                 for (sr_dev_driver **driver = drivers; *driver; driver++) {
 134                         if (sr_driver_init(sr_ctx, *driver) != SR_OK) {
 135                                 qDebug("Failed to initialize driver %s",
 136                                         (*driver)->name);
 137                                 ret = 1;
 138                                 break;
 139                         }
 140                 }
 141
 142                 if (ret == 0) {
 143                         // Initialise the main window
 144                         pv::MainWindow w(open_file);
 145                         w.show();
 146
 147 #ifdef ENABLE_SIGNALS
 148                         if(SignalHandler::prepare_signals()) {
 149                                 SignalHandler *const handler =
 150                                         new SignalHandler(&w);
 151                                 QObject::connect(handler,
 152                                         SIGNAL(int_received()),
 153                                         &w, SLOT(close()));
 154                                 QObject::connect(handler,
 155                                         SIGNAL(term_received()),
 156                                         &w, SLOT(close()));
 157                         } else {
 158                                 qWarning() <<
 159                                         "Could not prepare signal handler.";
 160                         }
 161 #endif
 162
 163                         // Run the application
 164                         ret = a.exec();
 165                 }
 166
 167 #ifdef ENABLE_SIGROKDECODE
 168                 // Destroy libsigrokdecode
 169                 srd_exit();
 170 #endif
 171
 172         } while (0);
 173
 174         // Destroy libsigrok
 175         if (sr_ctx)
 176                 sr_exit(sr_ctx);
 177
 178         return ret;
 179 }