pv/dialogs/connect.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012-2013 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 <boost/foreach.hpp>
  22
  23 #include "connect.h"
  24
  25 #include "pv/devicemanager.h"
  26
  27 extern "C" {
  28 /* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */
  29 #define __STDC_FORMAT_MACROS
  30 #include <glib.h>
  31 #include <libsigrok/libsigrok.h>
  32 }
  33
  34 using std::list;
  35 using std::string;
  36
  37 extern sr_context *sr_ctx;
  38
  39 namespace pv {
  40 namespace dialogs {
  41
  42 Connect::Connect(QWidget *parent, pv::DeviceManager &device_manager) :
  43         QDialog(parent),
  44         _device_manager(device_manager),
  45         _layout(this),
  46         _form(this),
  47         _form_layout(&_form),
  48         _drivers(&_form),
  49         _serial_device(&_form),
  50         _scan_button(tr("Scan for Devices"), this),
  51         _device_list(this),
  52         _button_box(QDialogButtonBox::Ok | QDialogButtonBox::Cancel,
  53                 Qt::Horizontal, this)
  54 {
  55         setWindowTitle(tr("Connect to Device"));
  56
  57         connect(&_button_box, SIGNAL(accepted()), this, SLOT(accept()));
  58         connect(&_button_box, SIGNAL(rejected()), this, SLOT(reject()));
  59
  60         populate_drivers();
  61         connect(&_drivers, SIGNAL(activated(int)),
  62                 this, SLOT(device_selected(int)));
  63
  64         _form.setLayout(&_form_layout);
  65         _form_layout.addRow(tr("Driver"), &_drivers);
  66
  67         _form_layout.addRow(tr("Serial Port"), &_serial_device);
  68
  69         unset_connection();
  70
  71         connect(&_scan_button, SIGNAL(pressed()),
  72                 this, SLOT(scan_pressed()));
  73
  74         setLayout(&_layout);
  75         _layout.addWidget(&_form);
  76         _layout.addWidget(&_scan_button);
  77         _layout.addWidget(&_device_list);
  78         _layout.addWidget(&_button_box);
  79 }
  80
  81 struct sr_dev_inst* Connect::get_selected_device() const
  82 {
  83         const QListWidgetItem *const item = _device_list.currentItem();
  84         if (!item)
  85                 return NULL;
  86
  87         return (sr_dev_inst*)item->data(Qt::UserRole).value<void*>();
  88 }
  89
  90 void Connect::populate_drivers()
  91 {
  92         gsize num_opts = 0;
  93         const int32_t *hwopts;
  94         struct sr_dev_driver **drivers = sr_driver_list();
  95         GVariant *gvar_opts;
  96
  97         for (int i = 0; drivers[i]; ++i) {
  98                 /**
  99                  * We currently only support devices that can deliver
 100                  * samples at a fixed samplerate i.e. oscilloscopes and
 101                  * logic analysers.
 102                  * @todo Add support for non-monotonic devices i.e. DMMs
 103                  * and sensors.
 104                  */
 105                 bool supported_device = false;
 106                 if ((sr_config_list(drivers[i], NULL, NULL,
 107                                 SR_CONF_DEVICE_OPTIONS, &gvar_opts) == SR_OK)) {
 108                         hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_opts,
 109                                         &num_opts, sizeof(int32_t));
 110                         for (unsigned int j = 0; j < num_opts; j++)
 111                                 if (hwopts[j] == SR_CONF_SAMPLERATE) {
 112                                         supported_device = true;
 113                                         break;
 114                                 }
 115                 }
 116
 117                 if (supported_device)
 118                         _drivers.addItem(QString("%1 (%2)").arg(
 119                                 drivers[i]->longname).arg(drivers[i]->name),
 120                                 qVariantFromValue((void*)drivers[i]));
 121         }
 122 }
 123
 124 void Connect::unset_connection()
 125 {
 126         _device_list.clear();
 127         _serial_device.hide();
 128         _form_layout.labelForField(&_serial_device)->hide();
 129         _button_box.button(QDialogButtonBox::Ok)->setDisabled(true);
 130 }
 131
 132 void Connect::set_serial_connection()
 133 {
 134         _serial_device.show();
 135         _form_layout.labelForField(&_serial_device)->show();
 136 }
 137
 138 void Connect::scan_pressed()
 139 {
 140         _device_list.clear();
 141
 142         const int index = _drivers.currentIndex();
 143         if (index == -1)
 144                 return;
 145
 146         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 147                 index).value<void*>();
 148
 149         GSList *drvopts = NULL;
 150
 151         if (_serial_device.isVisible()) {
 152                 sr_config *const src = (sr_config*)g_try_malloc(sizeof(sr_config));
 153                 src->key = SR_CONF_CONN;
 154                 const QByteArray byteArray = _serial_device.text().toUtf8();
 155                 src->data = g_variant_new_string((const gchar*)byteArray.constData());
 156                 drvopts = g_slist_append(drvopts, src);
 157         }
 158
 159         const list<sr_dev_inst*> devices = _device_manager.driver_scan(
 160                 driver, drvopts);
 161
 162         g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
 163
 164         BOOST_FOREACH(sr_dev_inst *const sdi, devices)
 165         {
 166                 const string title = DeviceManager::format_device_title(sdi);
 167                 QString text = QString::fromUtf8(title.c_str());
 168                 if (sdi->probes) {
 169                         text += QString(" with %1 probes").arg(
 170                                 g_slist_length(sdi->probes));
 171                 }
 172
 173                 QListWidgetItem *const item = new QListWidgetItem(text,
 174                         &_device_list);
 175                 item->setData(Qt::UserRole, qVariantFromValue((void*)sdi));
 176                 _device_list.addItem(item);
 177         }
 178
 179         _device_list.setCurrentRow(0);
 180         _button_box.button(QDialogButtonBox::Ok)->setDisabled(_device_list.count() == 0);
 181 }
 182
 183 void Connect::device_selected(int index)
 184 {
 185         gsize num_opts = 0;
 186         const int32_t *hwopts;
 187         GVariant *gvar_list;
 188         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 189                 index).value<void*>();
 190
 191         unset_connection();
 192
 193         if ((sr_config_list(driver, NULL, NULL,
 194                                 SR_CONF_SCAN_OPTIONS, &gvar_list) == SR_OK)) {
 195                 hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_list,
 196                                 &num_opts, sizeof(int32_t));
 197
 198                 for (unsigned int i = 0; i < num_opts; i++) {
 199                         switch(hwopts[i]) {
 200                         case SR_CONF_SERIALCOMM:
 201                                 set_serial_connection();
 202                                 break;
 203
 204                         default:
 205                                 continue;
 206                         }
 207
 208                         break;
 209                 }
 210                 g_variant_unref(gvar_list);
 211         }
 212 }
 213
 214 void Connect::free_drvopts(struct sr_config *src)
 215 {
 216         g_variant_unref(src->data);
 217         g_free(src);
 218 }
 219
 220 } // namespace dialogs
 221 } // namespace pv