pv/devicemanager.cpp

   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.hpp"
  22 #include "session.hpp"
  23
  24 #include <cassert>
  25 #include <functional>
  26 #include <stdexcept>
  27 #include <sstream>
  28 #include <string>
  29 #include <vector>
  30
  31 #include <libsigrokcxx/libsigrokcxx.hpp>
  32
  33 #include <boost/algorithm/string/join.hpp>
  34 #include <boost/filesystem.hpp>
  35
  36 #include <pv/devices/hardwaredevice.hpp>
  37
  38 using boost::algorithm::join;
  39
  40 using std::bind;
  41 using std::dynamic_pointer_cast;
  42 using std::list;
  43 using std::map;
  44 using std::placeholders::_1;
  45 using std::placeholders::_2;
  46 using std::remove_if;
  47 using std::runtime_error;
  48 using std::shared_ptr;
  49 using std::string;
  50 using std::vector;
  51
  52 using Glib::VariantBase;
  53
  54 using sigrok::ConfigKey;
  55 using sigrok::Context;
  56 using sigrok::Driver;
  57 using sigrok::SessionDevice;
  58
  59 namespace pv {
  60
  61 DeviceManager::DeviceManager(shared_ptr<Context> context) :
  62         context_(context)
  63 {
  64         for (auto entry : context->drivers())
  65                 driver_scan(entry.second, map<const ConfigKey *, VariantBase>());
  66 }
  67
  68 DeviceManager::~DeviceManager()
  69 {
  70 }
  71
  72 const std::shared_ptr<sigrok::Context>& DeviceManager::context() const
  73 {
  74         return context_;
  75 }
  76
  77 shared_ptr<Context> DeviceManager::context()
  78 {
  79         return context_;
  80 }
  81
  82 const list< shared_ptr<devices::HardwareDevice> >&
  83 DeviceManager::devices() const
  84 {
  85         return devices_;
  86 }
  87
  88 list< shared_ptr<devices::HardwareDevice> >
  89 DeviceManager::driver_scan(
  90         shared_ptr<Driver> driver, map<const ConfigKey *, VariantBase> drvopts)
  91 {
  92         list< shared_ptr<devices::HardwareDevice> > driver_devices;
  93
  94         assert(driver);
  95
  96         // Remove any device instances from this driver from the device
  97         // list. They will not be valid after the scan.
  98         devices_.remove_if([&](shared_ptr<devices::HardwareDevice> device) {
  99                 return device->hardware_device()->driver() == driver; });
 100
 101         // Do the scan
 102         auto devices = driver->scan(drvopts);
 103
 104         // Add the scanned devices to the main list, set display names and sort.
 105         for (shared_ptr<sigrok::HardwareDevice> device : devices) {
 106                 const shared_ptr<devices::HardwareDevice> d(
 107                         new devices::HardwareDevice(context_, device));
 108                 driver_devices.push_back(d);
 109         }
 110
 111         devices_.insert(devices_.end(), driver_devices.begin(),
 112                 driver_devices.end());
 113         devices_.sort(bind(&DeviceManager::compare_devices, this, _1, _2));
 114         driver_devices.sort(bind(
 115                 &DeviceManager::compare_devices, this, _1, _2));
 116
 117         return driver_devices;
 118 }
 119
 120 const map<string, string> DeviceManager::get_device_info(
 121         shared_ptr<devices::Device> device)
 122 {
 123         map<string, string> result;
 124
 125         assert(device);
 126
 127         const shared_ptr<sigrok::Device> sr_dev = device->device();
 128         if (sr_dev->vendor().length() > 0)
 129                 result["vendor"] = sr_dev->vendor();
 130         if (sr_dev->model().length() > 0)
 131                 result["model"] = sr_dev->model();
 132         if (sr_dev->version().length() > 0)
 133                 result["version"] = sr_dev->version();
 134         if (sr_dev->serial_number().length() > 0)
 135                 result["serial_num"] = sr_dev->serial_number();
 136         if (sr_dev->connection_id().length() > 0)
 137                 result["connection_id"] = sr_dev->connection_id();
 138
 139         return result;
 140 }
 141
 142 const shared_ptr<devices::HardwareDevice> DeviceManager::find_device_from_info(
 143         const map<string, string> search_info)
 144 {
 145         shared_ptr<devices::HardwareDevice> last_resort_dev;
 146         map<string, string> dev_info;
 147
 148         for (shared_ptr<devices::HardwareDevice> dev : devices_) {
 149                 assert(dev);
 150                 dev_info = get_device_info(dev);
 151
 152                 // If present, vendor and model always have to match.
 153                 if (dev_info.count("vendor") > 0 && search_info.count("vendor") > 0)
 154                         if (dev_info.at("vendor") != search_info.at("vendor"))
 155                                 continue;
 156
 157                 if (dev_info.count("model") > 0 && search_info.count("model") > 0)
 158                         if (dev_info.at("model") != search_info.at("model"))
 159                                 continue;
 160
 161                 // Most unique match: vendor/model/serial_num (but don't match a S/N of 0)
 162                 if ((dev_info.count("serial_num") > 0) && (dev_info.at("serial_num") != "0")
 163                                 && search_info.count("serial_num") > 0)
 164                         if (dev_info.at("serial_num") == search_info.at("serial_num") &&
 165                                         dev_info.at("serial_num") != "0")
 166                                 return dev;
 167
 168                 // Second best match: vendor/model/connection_id
 169                 if (dev_info.count("connection_id") > 0 &&
 170                         search_info.count("connection_id") > 0)
 171                         if (dev_info.at("connection_id") == search_info.at("connection_id"))
 172                                 return dev;
 173
 174                 // Last resort: vendor/model/version
 175                 if (dev_info.count("version") > 0 &&
 176                         search_info.count("version") > 0)
 177                         if (dev_info.at("version") == search_info.at("version") &&
 178                                         dev_info.at("version") != "0")
 179                                 return dev;
 180
 181                 // For this device, we merely have a vendor/model match.
 182                 last_resort_dev = dev;
 183         }
 184
 185         // If there wasn't even a vendor/model/version match, we end up here.
 186         // This is usually the case for devices with only vendor/model data.
 187         // The selected device may be wrong with multiple such devices attached
 188         // but it is the best we can do at this point. After all, there may be
 189         // only one such device and we do want to select it in this case.
 190         return last_resort_dev;
 191 }
 192
 193 bool DeviceManager::compare_devices(shared_ptr<devices::Device> a,
 194         shared_ptr<devices::Device> b)
 195 {
 196         assert(a);
 197         assert(b);
 198         return a->display_name(*this).compare(b->display_name(*this)) < 0;
 199 }
 200
 201 } // namespace pv