Use C++ style comments in main.cpp
[pulseview.git] / pv / samplingbar.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012 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 <assert.h>
22
23 #include <boost/foreach.hpp>
24
25 extern "C" {
26 #include <libsigrok/libsigrok.h>
27 }
28
29 #include <QAction>
30
31 #include "samplingbar.h"
32
33 namespace pv {
34
35 const uint64_t SamplingBar::RecordLengths[11] = {
36         1000000,
37         2000000,
38         5000000,
39         10000000,
40         25000000,
41         50000000,
42         100000000,
43         250000000,
44         500000000,
45         1000000000,
46         10000000000
47 };
48
49 SamplingBar::SamplingBar(QWidget *parent) :
50         QToolBar("Sampling Bar", parent),
51         _device_selector(this),
52         _record_length_selector(this),
53         _sample_rate_list(this),
54         _run_stop_button(this)
55 {
56         connect(&_run_stop_button, SIGNAL(clicked()), this, SIGNAL(run_stop()));
57         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
58                 this, SLOT(on_device_selected()));
59
60         _sample_rate_value.setDecimals(0);
61         _sample_rate_value.setSuffix("Hz");
62
63         BOOST_FOREACH(uint64_t l, RecordLengths)
64         {
65                 char *const text = sr_si_string_u64(l, " samples");
66                 _record_length_selector.addItem(QString(text),
67                         qVariantFromValue(l));
68                 g_free(text);
69         }
70
71         _run_stop_button.setText("Run");
72
73         addWidget(&_device_selector);
74         addWidget(&_record_length_selector);
75         _sample_rate_list_action = addWidget(&_sample_rate_list);
76         _sample_rate_value_action = addWidget(&_sample_rate_value);
77         addWidget(&_run_stop_button);
78
79         update_device_selector();
80         update_sample_rate_selector();
81 }
82
83 struct sr_dev_inst* SamplingBar::get_selected_device() const
84 {
85         const int index = _device_selector.currentIndex();
86         if(index < 0)
87                 return NULL;
88
89         return (sr_dev_inst*)_device_selector.itemData(
90                 index).value<void*>();
91 }
92
93 uint64_t SamplingBar::get_record_length() const
94 {
95         const int index = _record_length_selector.currentIndex();
96         if(index < 0)
97                 return 0;
98
99         return _record_length_selector.itemData(index).value<uint64_t>();
100 }
101
102 uint64_t SamplingBar::get_sample_rate() const
103 {
104         assert(_sample_rate_value_action);
105         assert(_sample_rate_list_action);
106
107         if(_sample_rate_value_action->isVisible())
108                 return (uint64_t)_sample_rate_value.value();
109         else if(_sample_rate_list_action->isVisible())
110         {
111                 const int index = _sample_rate_list.currentIndex();
112                 if(index < 0)
113                         return 0;
114                 
115                 return _sample_rate_list.itemData(index).value<uint64_t>();
116         }
117
118         return 0;
119 }
120
121 void SamplingBar::update_device_selector()
122 {
123         GSList *devices = NULL;
124
125         /* Scan all drivers for all devices. */
126         struct sr_dev_driver **const drivers = sr_driver_list();
127         for (struct sr_dev_driver **driver = drivers; *driver; driver++) {
128                 GSList *tmpdevs = sr_driver_scan(*driver, NULL);
129                 for (GSList *l = tmpdevs; l; l = l->next)
130                         devices = g_slist_append(devices, l->data);
131                 g_slist_free(tmpdevs);
132         }
133
134         for (GSList *l = devices; l; l = l->next) {
135                 sr_dev_inst *const sdi = (sr_dev_inst*)l->data;
136
137                 QString title;
138                 if (sdi->vendor && sdi->vendor[0])
139                         title += sdi->vendor + QString(" ");
140                 if (sdi->model && sdi->model[0])
141                         title += sdi->model + QString(" ");
142                 if (sdi->version && sdi->version[0])
143                         title += sdi->version + QString(" ");
144
145                 _device_selector.addItem(title, qVariantFromValue(
146                         (void*)sdi));
147         }
148
149         g_slist_free(devices);
150 }
151
152 void SamplingBar::update_sample_rate_selector()
153 {
154         const sr_dev_inst *const sdi = get_selected_device();
155         const struct sr_samplerates *samplerates;
156
157         assert(_sample_rate_value_action);
158         assert(_sample_rate_list_action);
159
160         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
161                 (const void **)&samplerates, sdi) != SR_OK)
162                 return;
163
164         _sample_rate_list_action->setVisible(false);
165         _sample_rate_value_action->setVisible(false);
166
167         if (samplerates->step)
168         {
169                 _sample_rate_value.setRange(
170                         samplerates->low, samplerates->high);
171                 _sample_rate_value.setSingleStep(samplerates->step);
172                 _sample_rate_value_action->setVisible(true);
173         }
174         else
175         {
176                 _sample_rate_list.clear();
177                 for (const uint64_t *rate = samplerates->list;
178                      *rate; rate++)
179                         _sample_rate_list.addItem(
180                                 sr_samplerate_string(*rate),
181                                 qVariantFromValue(*rate));
182                 _sample_rate_list.show();
183                 _sample_rate_list_action->setVisible(true);
184         }
185 }
186
187 void SamplingBar::on_device_selected()
188 {
189         update_sample_rate_selector();
190 }
191
192 } // namespace pv