2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
21 #include "devicemanager.h"
22 #include "device/device.h"
23 #include "sigsession.h"
29 #include <libsigrok/libsigrok.h>
31 using boost::shared_ptr;
34 using std::ostringstream;
35 using std::runtime_error;
40 DeviceManager::DeviceManager(struct sr_context *sr_ctx) :
47 DeviceManager::~DeviceManager()
52 const list< shared_ptr<pv::device::Device> >& DeviceManager::devices() const
57 void DeviceManager::use_device(shared_ptr<device::Device> dev_inst,
63 _used_devices[dev_inst] = owner;
65 sr_dev_open(dev_inst->dev_inst());
68 void DeviceManager::release_device(shared_ptr<device::Device> dev_inst)
72 // Notify the owner, and remove the device from the used device list
73 map< shared_ptr<device::Device>, pv::SigSession*>::const_iterator
74 iter = _used_devices.find(dev_inst);
75 assert(iter != _used_devices.end());
77 (*iter).second->release_device(dev_inst);
78 _used_devices.erase(dev_inst);
81 list< shared_ptr<device::Device> > DeviceManager::driver_scan(
82 struct sr_dev_driver *const driver, GSList *const drvopts)
84 list< shared_ptr<device::Device> > driver_devices;
88 // Remove any device instances from this driver from the device
89 // list. They will not be valid after the scan.
90 list< shared_ptr<device::Device> >::iterator i = _devices.begin();
91 while (i != _devices.end()) {
92 if ((*i)->dev_inst()->driver == driver)
93 i = _devices.erase(i);
98 // Release this driver and all it's attached devices
99 release_driver(driver);
102 GSList *const devices = sr_driver_scan(driver, drvopts);
103 for (GSList *l = devices; l; l = l->next)
104 driver_devices.push_back(shared_ptr<device::Device>(
105 new device::Device((sr_dev_inst*)l->data)));
106 g_slist_free(devices);
107 driver_devices.sort(compare_devices);
109 // Add the scanned devices to the main list
110 _devices.insert(_devices.end(), driver_devices.begin(),
111 driver_devices.end());
112 _devices.sort(compare_devices);
114 return driver_devices;
117 void DeviceManager::init_drivers()
119 // Initialise all libsigrok drivers
120 sr_dev_driver **const drivers = sr_driver_list();
121 for (sr_dev_driver **driver = drivers; *driver; driver++) {
122 if (sr_driver_init(_sr_ctx, *driver) != SR_OK) {
124 string("Failed to initialize driver ") +
125 string((*driver)->name));
130 void DeviceManager::release_devices()
132 // Release all the used devices
133 for (map<shared_ptr<device::Device>, SigSession*>::iterator i =
134 _used_devices.begin(); i != _used_devices.end(); i++)
135 release_device((*i).first);
137 _used_devices.clear();
139 // Clear all the drivers
140 sr_dev_driver **const drivers = sr_driver_list();
141 for (sr_dev_driver **driver = drivers; *driver; driver++)
142 sr_dev_clear(*driver);
145 void DeviceManager::scan_all_drivers()
147 // Scan all drivers for all devices.
148 struct sr_dev_driver **const drivers = sr_driver_list();
149 for (struct sr_dev_driver **driver = drivers; *driver; driver++)
150 driver_scan(*driver);
153 void DeviceManager::release_driver(struct sr_dev_driver *const driver)
156 for (map<shared_ptr<device::Device>, SigSession*>::iterator i =
157 _used_devices.begin(); i != _used_devices.end(); i++)
158 if((*i).first->dev_inst()->driver == driver)
160 // Notify the current owner of the device
161 (*i).second->release_device((*i).first);
163 // Remove it from the used device list
164 _used_devices.erase(i);
166 // Close the device instance
167 sr_dev_close((*i).first->dev_inst());
170 // Clear all the old device instances from this driver
171 sr_dev_clear(driver);
174 bool DeviceManager::compare_devices(shared_ptr<device::Device> a,
175 shared_ptr<device::Device> b)
179 return a->format_device_title().compare(b->format_device_title()) < 0;