+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "devicemanager.h"
+
+#include <cassert>
+#include <cstring>
+#include <stdexcept>
+#include <string>
+
+#include <libsigrok/libsigrok.h>
+
+using namespace std;
+
+namespace pv {
+
+DeviceManager::DeviceManager(struct sr_context *sr_ctx) :
+ _sr_ctx(sr_ctx)
+{
+ init_drivers();
+ scan_all_drivers();
+}
+
+DeviceManager::~DeviceManager()
+{
+ release_devices();
+}
+
+const std::list<sr_dev_inst*>& DeviceManager::devices() const
+{
+ return _devices;
+}
+
+list<sr_dev_inst*> DeviceManager::driver_scan(
+ struct sr_dev_driver *const driver, GSList *const drvopts)
+{
+ list<sr_dev_inst*> driver_devices;
+
+ assert(driver);
+
+ // Remove any device instances from this driver from the device
+ // list. They will not be valid after the scan.
+ list<sr_dev_inst*>::iterator i = _devices.begin();
+ while (i != _devices.end()) {
+ if ((*i)->driver == driver)
+ i = _devices.erase(i);
+ else
+ i++;
+ }
+
+ // Clear all the old device instances from this driver
+ sr_dev_clear(driver);
+
+ // Do the scan
+ GSList *const devices = sr_driver_scan(driver, drvopts);
+ for (GSList *l = devices; l; l = l->next)
+ driver_devices.push_back((sr_dev_inst*)l->data);
+ g_slist_free(devices);
+ driver_devices.sort(compare_devices);
+
+ // Add the scanned devices to the main list
+ _devices.insert(_devices.end(), driver_devices.begin(),
+ driver_devices.end());
+ _devices.sort(compare_devices);
+
+ return driver_devices;
+}
+
+void DeviceManager::init_drivers()
+{
+ // Initialise all libsigrok drivers
+ sr_dev_driver **const drivers = sr_driver_list();
+ for (sr_dev_driver **driver = drivers; *driver; driver++) {
+ if (sr_driver_init(_sr_ctx, *driver) != SR_OK) {
+ throw runtime_error(
+ string("Failed to initialize driver ") +
+ string((*driver)->name));
+ }
+ }
+}
+
+void DeviceManager::release_devices()
+{
+ sr_dev_driver **const drivers = sr_driver_list();
+ for (sr_dev_driver **driver = drivers; *driver; driver++)
+ sr_dev_clear(*driver);
+}
+
+void DeviceManager::scan_all_drivers()
+{
+ // Scan all drivers for all devices.
+ struct sr_dev_driver **const drivers = sr_driver_list();
+ for (struct sr_dev_driver **driver = drivers; *driver; driver++)
+ driver_scan(*driver);
+}
+
+bool DeviceManager::compare_devices(const sr_dev_inst *const a,
+ const sr_dev_inst *const b)
+{
+ assert(a);
+ assert(b);
+
+ const int vendor_cmp = strcasecmp(a->vendor, b->vendor);
+ if(vendor_cmp < 0)
+ return true;
+ else if(vendor_cmp > 0)
+ return false;
+
+ const int model_cmp = strcasecmp(a->model, b->model);
+ if(model_cmp < 0)
+ return true;
+ else if(model_cmp > 0)
+ return false;
+
+ return strcasecmp(a->version, b->version) < 0;
+}
+
+} // namespace pv
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