Use SR_CONF_DEVICE_OPTIONS to decide if LIMIT_SAMPLES is supported.
[pulseview.git] / 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