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