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 <signal.h>
  23 #include <stdint.h>
  24 #include <libsigrok/libsigrok.h>
  25
  26 #include <getopt.h>
  27
  28 #include <QtGui/QApplication>
  29 #include <QDebug>
  30
  31 #include "pv/mainwindow.h"
  32
  33 #include "config.h"
  34
  35 // Global pointer to our QApplication
  36 QApplication *g_app = NULL;
  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 /*
  52  * SIGINT handler (likely received Ctrl-C from terminal)
  53  */
  54 void sigint_handler(int param)
  55 {
  56         (void)param;
  57
  58         qDebug("Received SIGINT.");
  59
  60         if (g_app)
  61                 g_app->quit();
  62 }
  63
  64 int main(int argc, char *argv[])
  65 {
  66         int ret = 0;
  67         struct sr_context *sr_ctx = NULL;
  68         const char *open_file = NULL;
  69
  70         // Register a SIGINT handler
  71         signal(SIGINT, sigint_handler);
  72
  73         QApplication a(argc, argv);
  74         // Now we have an application to populate our global pointer
  75         g_app = &a;
  76
  77         // Set some application metadata
  78         QApplication::setApplicationVersion(PV_VERSION_STRING);
  79         QApplication::setApplicationName("PulseView");
  80         QApplication::setOrganizationDomain("http://www.sigrok.org");
  81
  82         // Parse arguments
  83         while (1) {
  84                 static const struct option long_options[] = {
  85                         {"loglevel", required_argument, 0, 'l'},
  86                         {"version", no_argument, 0, 'V'},
  87                         {"help", no_argument, 0, 'h'},
  88                         {0, 0, 0, 0}
  89                 };
  90
  91                 const int c = getopt_long(argc, argv,
  92                         "l:Vh?", long_options, NULL);
  93                 if (c == -1)
  94                         break;
  95
  96                 switch (c) {
  97                 case 'l':
  98                 {
  99                         const int loglevel = atoi(optarg);
 100                         sr_log_loglevel_set(loglevel);
 101                         srd_log_loglevel_set(loglevel);
 102                         break;
 103                 }
 104
 105                 case 'V':
 106                         // Print version info
 107                         fprintf(stdout, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
 108                         return 0;
 109
 110                 case 'h':
 111                 case '?':
 112                         usage();
 113                         return 0;
 114                 }
 115         }
 116
 117         if (argc - optind > 1) {
 118                 fprintf(stderr, "Only one file can be openened.\n");
 119                 return 1;
 120         } else if (argc - optind == 1)
 121                 open_file = argv[argc - 1];
 122
 123         // Initialise libsigrok
 124         if (sr_init(&sr_ctx) != SR_OK) {
 125                 qDebug() << "ERROR: libsigrok init failed.";
 126                 return 1;
 127         }
 128
 129         // Initialise libsigrokdecode
 130         if (srd_init(NULL) == SRD_OK) {
 131
 132                 // Load the protocol decoders
 133                 srd_decoder_load_all();
 134
 135                 // Initialize all libsigrok drivers
 136                 sr_dev_driver **const drivers = sr_driver_list();
 137                 for (sr_dev_driver **driver = drivers; *driver; driver++) {
 138                         if (sr_driver_init(sr_ctx, *driver) != SR_OK) {
 139                                 qDebug("Failed to initialize driver %s",
 140                                         (*driver)->name);
 141                                 ret = 1;
 142                                 break;
 143                         }
 144                 }
 145
 146                 if (ret == 0) {
 147                         // Initialise the main window
 148                         pv::MainWindow w(open_file);
 149                         w.show();
 150
 151                         // Run the application
 152                         ret = a.exec();
 153                 }
 154
 155                 // Destroy libsigrokdecode and libsigrok
 156                 srd_exit();
 157
 158         } else {
 159                 qDebug() << "ERROR: libsigrokdecode init failed.";
 160         }
 161
 162         if (sr_ctx)
 163                 sr_exit(sr_ctx);
 164
 165         return ret;
 166 }