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 <cassert>
  22
  23 #include <libsigrok/libsigrok.h>
  24
  25 #include "connect.h"
  26
  27 #include "pv/devicemanager.h"
  28 #include "pv/device/device.h"
  29
  30 extern "C" {
  31 /* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */
  32 #define __STDC_FORMAT_MACROS
  33 #include <glib.h>
  34 #include <libsigrok/libsigrok.h>
  35 }
  36
  37 using std::list;
  38 using std::shared_ptr;
  39 using std::string;
  40
  41 extern sr_context *sr_ctx;
  42
  43 namespace pv {
  44 namespace dialogs {
  45
  46 Connect::Connect(QWidget *parent, pv::DeviceManager &device_manager) :
  47         QDialog(parent),
  48         _device_manager(device_manager),
  49         _layout(this),
  50         _form(this),
  51         _form_layout(&_form),
  52         _drivers(&_form),
  53         _serial_device(&_form),
  54         _scan_button(tr("Scan for Devices"), this),
  55         _device_list(this),
  56         _button_box(QDialogButtonBox::Ok | QDialogButtonBox::Cancel,
  57                 Qt::Horizontal, this)
  58 {
  59         setWindowTitle(tr("Connect to Device"));
  60
  61         connect(&_button_box, SIGNAL(accepted()), this, SLOT(accept()));
  62         connect(&_button_box, SIGNAL(rejected()), this, SLOT(reject()));
  63
  64         populate_drivers();
  65         connect(&_drivers, SIGNAL(activated(int)),
  66                 this, SLOT(device_selected(int)));
  67
  68         _form.setLayout(&_form_layout);
  69         _form_layout.addRow(tr("Driver"), &_drivers);
  70
  71         _form_layout.addRow(tr("Serial Port"), &_serial_device);
  72
  73         unset_connection();
  74
  75         connect(&_scan_button, SIGNAL(pressed()),
  76                 this, SLOT(scan_pressed()));
  77
  78         setLayout(&_layout);
  79         _layout.addWidget(&_form);
  80         _layout.addWidget(&_scan_button);
  81         _layout.addWidget(&_device_list);
  82         _layout.addWidget(&_button_box);
  83 }
  84
  85 shared_ptr<device::Device> Connect::get_selected_device() const
  86 {
  87         const QListWidgetItem *const item = _device_list.currentItem();
  88         if (!item)
  89                 return shared_ptr<device::Device>();
  90
  91         const sr_dev_inst *const sdi = (sr_dev_inst*)item->data(
  92                 Qt::UserRole).value<void*>();
  93         assert(sdi);
  94
  95         const auto iter = _device_map.find(sdi);
  96         assert(iter != _device_map.end());
  97
  98         return (*iter).second;
  99 }
 100
 101 void Connect::populate_drivers()
 102 {
 103         gsize num_opts = 0;
 104         const int32_t *hwopts;
 105         struct sr_dev_driver **drivers = sr_driver_list();
 106         GVariant *gvar_opts;
 107
 108         for (int i = 0; drivers[i]; ++i) {
 109                 /**
 110                  * We currently only support devices that can deliver
 111                  * samples at a fixed samplerate i.e. oscilloscopes and
 112                  * logic analysers.
 113                  * @todo Add support for non-monotonic devices i.e. DMMs
 114                  * and sensors.
 115                  */
 116                 bool supported_device = false;
 117                 if ((sr_config_list(drivers[i], NULL, NULL,
 118                                 SR_CONF_DEVICE_OPTIONS, &gvar_opts) == SR_OK)) {
 119                         hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_opts,
 120                                         &num_opts, sizeof(int32_t));
 121                         for (unsigned int j = 0; j < num_opts; j++)
 122                                 if (hwopts[j] == SR_CONF_SAMPLERATE) {
 123                                         supported_device = true;
 124                                         break;
 125                                 }
 126                 }
 127
 128                 if (supported_device)
 129                         _drivers.addItem(QString("%1 (%2)").arg(
 130                                 drivers[i]->longname).arg(drivers[i]->name),
 131                                 qVariantFromValue((void*)drivers[i]));
 132         }
 133 }
 134
 135 void Connect::unset_connection()
 136 {
 137         _device_list.clear();
 138         _device_map.clear();
 139         _serial_device.hide();
 140         _form_layout.labelForField(&_serial_device)->hide();
 141         _button_box.button(QDialogButtonBox::Ok)->setDisabled(true);
 142 }
 143
 144 void Connect::set_serial_connection()
 145 {
 146         _serial_device.show();
 147         _form_layout.labelForField(&_serial_device)->show();
 148 }
 149
 150 void Connect::scan_pressed()
 151 {
 152         _device_list.clear();
 153         _device_map.clear();
 154
 155         const int index = _drivers.currentIndex();
 156         if (index == -1)
 157                 return;
 158
 159         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 160                 index).value<void*>();
 161
 162         GSList *drvopts = NULL;
 163
 164         if (_serial_device.isVisible()) {
 165                 sr_config *const src = (sr_config*)g_try_malloc(sizeof(sr_config));
 166                 src->key = SR_CONF_CONN;
 167                 const QByteArray byteArray = _serial_device.text().toUtf8();
 168                 src->data = g_variant_new_string((const gchar*)byteArray.constData());
 169                 drvopts = g_slist_append(drvopts, src);
 170         }
 171
 172         const list< shared_ptr<device::Device> > devices =
 173                 _device_manager.driver_scan(driver, drvopts);
 174
 175         g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
 176
 177         for (shared_ptr<device::Device> dev_inst : devices)
 178         {
 179                 assert(dev_inst);
 180                 const sr_dev_inst *const sdi = dev_inst->dev_inst();
 181                 assert(sdi);
 182
 183                 const string title = dev_inst->format_device_title();
 184                 QString text = QString::fromUtf8(title.c_str());
 185
 186                 if (sdi->channels) {
 187                         text += QString(" with %1 channels").arg(
 188                                 g_slist_length(sdi->channels));
 189                 }
 190
 191                 QListWidgetItem *const item = new QListWidgetItem(text,
 192                         &_device_list);
 193                 item->setData(Qt::UserRole, qVariantFromValue((void*)sdi));
 194                 _device_list.addItem(item);
 195                 _device_map[sdi] = dev_inst;
 196         }
 197
 198         _device_list.setCurrentRow(0);
 199         _button_box.button(QDialogButtonBox::Ok)->setDisabled(_device_list.count() == 0);
 200 }
 201
 202 void Connect::device_selected(int index)
 203 {
 204         gsize num_opts = 0;
 205         const int32_t *hwopts;
 206         GVariant *gvar_list;
 207         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
 208                 index).value<void*>();
 209
 210         unset_connection();
 211
 212         if ((sr_config_list(driver, NULL, NULL,
 213                                 SR_CONF_SCAN_OPTIONS, &gvar_list) == SR_OK)) {
 214                 hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_list,
 215                                 &num_opts, sizeof(int32_t));
 216
 217                 for (unsigned int i = 0; i < num_opts; i++) {
 218                         switch(hwopts[i]) {
 219                         case SR_CONF_SERIALCOMM:
 220                                 set_serial_connection();
 221                                 break;
 222
 223                         default:
 224                                 continue;
 225                         }
 226
 227                         break;
 228                 }
 229                 g_variant_unref(gvar_list);
 230         }
 231 }
 232
 233 void Connect::free_drvopts(struct sr_config *src)
 234 {
 235         g_variant_unref(src->data);
 236         g_free(src);
 237 }
 238
 239 } // namespace dialogs
 240 } // namespace pv