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107ca6d3 JH |
1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 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 "devicemanager.h" | |
921b90c0 | 22 | #include "device/device.h" |
dc0867ff | 23 | #include "sigsession.h" |
107ca6d3 JH |
24 | |
25 | #include <cassert> | |
107ca6d3 JH |
26 | #include <stdexcept> |
27 | #include <string> | |
28 | ||
29 | #include <libsigrok/libsigrok.h> | |
30 | ||
819f4c25 JH |
31 | using std::list; |
32 | using std::map; | |
819f4c25 | 33 | using std::runtime_error; |
f9abf97e | 34 | using std::shared_ptr; |
819f4c25 | 35 | using std::string; |
107ca6d3 JH |
36 | |
37 | namespace pv { | |
38 | ||
39 | DeviceManager::DeviceManager(struct sr_context *sr_ctx) : | |
40 | _sr_ctx(sr_ctx) | |
41 | { | |
42 | init_drivers(); | |
43 | scan_all_drivers(); | |
44 | } | |
45 | ||
46 | DeviceManager::~DeviceManager() | |
47 | { | |
48 | release_devices(); | |
49 | } | |
50 | ||
85843b14 | 51 | const list< shared_ptr<pv::device::Device> >& DeviceManager::devices() const |
107ca6d3 JH |
52 | { |
53 | return _devices; | |
54 | } | |
55 | ||
85843b14 | 56 | list< shared_ptr<device::Device> > DeviceManager::driver_scan( |
107ca6d3 JH |
57 | struct sr_dev_driver *const driver, GSList *const drvopts) |
58 | { | |
85843b14 | 59 | list< shared_ptr<device::Device> > driver_devices; |
107ca6d3 JH |
60 | |
61 | assert(driver); | |
62 | ||
63 | // Remove any device instances from this driver from the device | |
64 | // list. They will not be valid after the scan. | |
f46e495e | 65 | auto i = _devices.begin(); |
107ca6d3 | 66 | while (i != _devices.end()) { |
19adbc2c | 67 | if ((*i)->dev_inst()->driver == driver) |
107ca6d3 JH |
68 | i = _devices.erase(i); |
69 | else | |
70 | i++; | |
71 | } | |
72 | ||
dc0867ff JH |
73 | // Release this driver and all it's attached devices |
74 | release_driver(driver); | |
107ca6d3 JH |
75 | |
76 | // Do the scan | |
77 | GSList *const devices = sr_driver_scan(driver, drvopts); | |
78 | for (GSList *l = devices; l; l = l->next) | |
85843b14 | 79 | driver_devices.push_back(shared_ptr<device::Device>( |
921b90c0 | 80 | new device::Device((sr_dev_inst*)l->data))); |
107ca6d3 JH |
81 | g_slist_free(devices); |
82 | driver_devices.sort(compare_devices); | |
83 | ||
84 | // Add the scanned devices to the main list | |
85 | _devices.insert(_devices.end(), driver_devices.begin(), | |
86 | driver_devices.end()); | |
87 | _devices.sort(compare_devices); | |
88 | ||
89 | return driver_devices; | |
90 | } | |
91 | ||
6842b5fc SA |
92 | const shared_ptr<device::Device> DeviceManager::find_device_from_info( |
93 | const map<string, string> search_info) | |
94 | { | |
95 | shared_ptr<device::Device> last_resort_dev; | |
96 | map<string, string> dev_info; | |
97 | ||
98 | last_resort_dev = NULL; | |
99 | ||
100 | for (shared_ptr<device::Device> dev : _devices) { | |
101 | assert(dev); | |
102 | dev_info = dev->get_device_info(); | |
103 | ||
104 | // If present, vendor and model always have to match. | |
105 | if (dev_info.count("vendor") > 0 && search_info.count("vendor") > 0) | |
106 | if (dev_info.at("vendor") != search_info.at("vendor")) continue; | |
107 | ||
108 | if (dev_info.count("model") > 0 && search_info.count("model") > 0) | |
109 | if (dev_info.at("model") != search_info.at("model")) continue; | |
110 | ||
111 | // Most unique match: vendor/model/serial_num (but don't match a S/N of 0) | |
112 | if ((dev_info.count("serial_num") > 0) && (dev_info.at("serial_num") != "0") | |
113 | && search_info.count("serial_num") > 0) | |
114 | if (dev_info.at("serial_num") == search_info.at("serial_num") && | |
115 | dev_info.at("serial_num") != "0") | |
116 | return dev; | |
117 | ||
118 | // Second best match: vendor/model/connection_id | |
119 | if (dev_info.count("connection_id") > 0 && | |
120 | search_info.count("connection_id") > 0) | |
121 | if (dev_info.at("connection_id") == search_info.at("connection_id")) | |
122 | return dev; | |
123 | ||
124 | // Last resort: vendor/model/version | |
125 | if (dev_info.count("version") > 0 && | |
126 | search_info.count("version") > 0) | |
127 | if (dev_info.at("version") == search_info.at("version") && | |
128 | dev_info.at("version") != "0") | |
129 | return dev; | |
130 | ||
131 | // For this device, we merely have a vendor/model match. | |
132 | last_resort_dev = dev; | |
133 | } | |
134 | ||
135 | // If there wasn't even a vendor/model/version match, we end up here. | |
136 | // This is usually the case for devices with only vendor/model data. | |
137 | // The selected device may be wrong with multiple such devices attached | |
138 | // but it is the best we can do at this point. After all, there may be | |
139 | // only one such device and we do want to select it in this case. | |
140 | return last_resort_dev; | |
141 | } | |
142 | ||
107ca6d3 JH |
143 | void DeviceManager::init_drivers() |
144 | { | |
145 | // Initialise all libsigrok drivers | |
146 | sr_dev_driver **const drivers = sr_driver_list(); | |
147 | for (sr_dev_driver **driver = drivers; *driver; driver++) { | |
148 | if (sr_driver_init(_sr_ctx, *driver) != SR_OK) { | |
149 | throw runtime_error( | |
150 | string("Failed to initialize driver ") + | |
151 | string((*driver)->name)); | |
152 | } | |
153 | } | |
154 | } | |
155 | ||
156 | void DeviceManager::release_devices() | |
157 | { | |
dc0867ff | 158 | // Release all the used devices |
d9aecf1f | 159 | for (shared_ptr<device::Device> dev : _devices) { |
996b7c9d JH |
160 | assert(dev); |
161 | dev->release(); | |
162 | } | |
dc0867ff JH |
163 | |
164 | // Clear all the drivers | |
107ca6d3 JH |
165 | sr_dev_driver **const drivers = sr_driver_list(); |
166 | for (sr_dev_driver **driver = drivers; *driver; driver++) | |
167 | sr_dev_clear(*driver); | |
168 | } | |
169 | ||
170 | void DeviceManager::scan_all_drivers() | |
171 | { | |
172 | // Scan all drivers for all devices. | |
173 | struct sr_dev_driver **const drivers = sr_driver_list(); | |
174 | for (struct sr_dev_driver **driver = drivers; *driver; driver++) | |
175 | driver_scan(*driver); | |
176 | } | |
177 | ||
dc0867ff JH |
178 | void DeviceManager::release_driver(struct sr_dev_driver *const driver) |
179 | { | |
d9aecf1f | 180 | for (shared_ptr<device::Device> dev : _devices) { |
996b7c9d JH |
181 | assert(dev); |
182 | if(dev->dev_inst()->driver == driver) | |
183 | dev->release(); | |
184 | } | |
dc0867ff JH |
185 | |
186 | // Clear all the old device instances from this driver | |
187 | sr_dev_clear(driver); | |
188 | } | |
189 | ||
85843b14 JH |
190 | bool DeviceManager::compare_devices(shared_ptr<device::Device> a, |
191 | shared_ptr<device::Device> b) | |
107ca6d3 | 192 | { |
19adbc2c JH |
193 | assert(a); |
194 | assert(b); | |
195 | return a->format_device_title().compare(b->format_device_title()) < 0; | |
107ca6d3 JH |
196 | } |
197 | ||
198 | } // namespace pv |