DecodeSignal: Re-create SRD session when changes are pending
[pulseview.git] / pv / devices / hardwaredevice.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2015 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, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include <boost/algorithm/string/join.hpp>
21
22 #include <QString>
23
24 #include <libsigrokcxx/libsigrokcxx.hpp>
25
26 #include <pv/devicemanager.hpp>
27
28 #include "hardwaredevice.hpp"
29
30 using std::shared_ptr;
31 using std::static_pointer_cast;
32 using std::string;
33 using std::vector;
34
35 using boost::algorithm::join;
36
37 using sigrok::HardwareDevice;
38
39 namespace pv {
40 namespace devices {
41
42 HardwareDevice::HardwareDevice(const shared_ptr<sigrok::Context> &context,
43         shared_ptr<sigrok::HardwareDevice> device) :
44         context_(context),
45         device_open_(false)
46 {
47         device_ = device;
48 }
49
50 HardwareDevice::~HardwareDevice()
51 {
52         close();
53 }
54
55 string HardwareDevice::full_name() const
56 {
57         vector<string> parts = {device_->vendor(), device_->model(),
58                 device_->version(), device_->serial_number()};
59         if (device_->connection_id().length() > 0)
60                 parts.push_back("(" + device_->connection_id() + ")");
61         return join(parts, " ");
62 }
63
64 shared_ptr<sigrok::HardwareDevice> HardwareDevice::hardware_device() const
65 {
66         return static_pointer_cast<sigrok::HardwareDevice>(device_);
67 }
68
69 string HardwareDevice::display_name(
70         const DeviceManager &device_manager) const
71 {
72         const auto hw_dev = hardware_device();
73
74         // If we can find another device with the same model/vendor then
75         // we have at least two such devices and need to distinguish them.
76         const auto &devices = device_manager.devices();
77         const bool multiple_dev = hw_dev && any_of(
78                 devices.begin(), devices.end(),
79                 [&](shared_ptr<devices::HardwareDevice> dev) {
80                         return dev->hardware_device()->vendor() ==
81                                         hw_dev->vendor() &&
82                                 dev->hardware_device()->model() ==
83                                         hw_dev->model() &&
84                                 dev->device_ != device_;
85                 });
86
87         vector<string> parts = {device_->vendor(), device_->model()};
88
89         if (multiple_dev) {
90                 parts.push_back(device_->version());
91                 parts.push_back(device_->serial_number());
92
93                 if ((device_->serial_number().length() == 0) &&
94                         (device_->connection_id().length() > 0))
95                         parts.push_back("(" + device_->connection_id() + ")");
96         }
97
98         return join(parts, " ");
99 }
100
101 void HardwareDevice::open()
102 {
103         if (device_open_)
104                 close();
105
106         try {
107                 device_->open();
108         } catch (const sigrok::Error &e) {
109                 throw QString(e.what());
110         }
111
112         device_open_ = true;
113
114         // Set up the session
115         session_ = context_->create_session();
116         session_->add_device(device_);
117 }
118
119 void HardwareDevice::close()
120 {
121         if (device_open_)
122                 device_->close();
123
124         if (session_)
125                 session_->remove_devices();
126
127         device_open_ = false;
128 }
129
130 } // namespace devices
131 } // namespace pv