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         gsize num_opts = 0;
  85         const int32_t *hwopts;
  86         struct sr_dev_driver **drivers = sr_driver_list();
  87         GVariant *gvar_opts;
  88
  89         for (int i = 0; drivers[i]; ++i) {
  90                 /**
  91                  * We currently only support devices that can deliver
  92                  * samples at a fixed samplerate i.e. oscilloscopes and
  93                  * logic analysers.
  94                  * @todo Add support for non-monotonic devices i.e. DMMs
  95                  * and sensors.
  96                  */
  97                 bool supported_device = false;
  98                 if ((sr_config_list(drivers[i], SR_CONF_DEVICE_OPTIONS,
  99                                 &gvar_opts, NULL) == SR_OK))
 100                         hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_opts,
 101                                         &num_opts, sizeof(int32_t));
 102                         for (unsigned int j = 0; j < num_opts; j++)
 103                                 if (hwopts[j] == SR_CONF_SAMPLERATE) {
 104                                         supported_device = true;
 105                                         break;
 106                                 }
 107
 108                 if (supported_device)
 109                         _drivers.addItem(QString("%1 (%2)").arg(
 110                                 drivers[i]->longname).arg(drivers[i]->name),
 111                                 qVariantFromValue((void*)drivers[i]));
 112         }
 113 }
 114
 115 void Connect::unset_connection()
 116 {
 117         _device_list.clear();
 118         _serial_device.hide();
 119         _form_layout.labelForField(&_serial_device)->hide();
 120         _button_box.button(QDialogButtonBox::Ok)->setDisabled(true);
 121 }
 122
 123 void Connect::set_serial_connection()
 124 {
 125         _serial_device.show();
 126         _form_layout.labelForField(&_serial_device)->show();
 127 }
 128
 129 void Connect::scan_pressed()
 130 {
 131         _device_list.clear();
 132
 133         const int index = _drivers.currentIndex();
 134         if (index == -1)
 135                 return;
 136
 137         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 138                 index).value<void*>();
 139
 140         GSList *drvopts = NULL;
 141
 142         if (_serial_device.isVisible()) {
 143                 sr_config *const src = (sr_config*)g_try_malloc(sizeof(sr_config));
 144                 src->key = SR_CONF_CONN;
 145                 const QByteArray byteArray = _serial_device.text().toUtf8();
 146                 src->data = g_variant_new_string((const gchar*)byteArray.constData());
 147                 drvopts = g_slist_append(drvopts, src);
 148         }
 149
 150         GSList *const devices = sr_driver_scan(driver, drvopts);
 151
 152         for (GSList *l = devices; l; l = l->next) {
 153
 154                 sr_dev_inst *const sdi = (sr_dev_inst*)l->data;
 155
 156                 QString text;
 157                 if (sdi->vendor && sdi->vendor[0])
 158                         text += QString("%1 ").arg(sdi->vendor);
 159                 if (sdi->model && sdi->model[0])
 160                         text += QString("%1 ").arg(sdi->model);
 161                 if (sdi->version && sdi->version[0])
 162                         text += QString("%1 ").arg(sdi->version);
 163                 if (sdi->probes) {
 164                         text += QString("with %1 probes").arg(
 165                                 g_slist_length(sdi->probes));
 166                 }
 167
 168                 QListWidgetItem *const item = new QListWidgetItem(text,
 169                         &_device_list);
 170                 item->setData(Qt::UserRole, qVariantFromValue((void*)sdi));
 171                 _device_list.addItem(item);
 172         }
 173
 174         g_slist_free(devices);
 175         g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
 176
 177         _device_list.setCurrentRow(0);
 178         _button_box.button(QDialogButtonBox::Ok)->setDisabled(false);
 179 }
 180
 181 void Connect::device_selected(int index)
 182 {
 183         gsize num_opts = 0;
 184         const int32_t *hwopts;
 185         GVariant *gvar_list;
 186         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 187                 index).value<void*>();
 188
 189         unset_connection();
 190
 191         if ((sr_config_list(driver, SR_CONF_SCAN_OPTIONS,
 192                                 &gvar_list, NULL) == SR_OK)) {
 193                 hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_list,
 194                                 &num_opts, sizeof(int32_t));
 195
 196                 for (unsigned int i = 0; i < num_opts; i++) {
 197                         switch(hwopts[i]) {
 198                         case SR_CONF_SERIALCOMM:
 199                                 set_serial_connection();
 200                                 break;
 201
 202                         default:
 203                                 continue;
 204                         }
 205
 206                         break;
 207                 }
 208                 g_variant_unref(gvar_list);
 209         }
 210 }
 211
 212 void Connect::free_drvopts(struct sr_config *src)
 213 {
 214         g_variant_unref(src->data);
 215         g_free(src);
 216 }
 217
 218 } // namespace dialogs
 219 } // namespace pv