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