]> sigrok.org Git - pulseview.git/blobdiff - pv/devicemanager.cpp
DecodeSignal: Re-set decoder metadata after stack termination
[pulseview.git] / pv / devicemanager.cpp
index 4c9f768a909a07e1585c84d9c0785c2c7b92d6e8..ca8f66bee5316e6116d4fb38afcbdd93ca78a24d 100644 (file)
  * 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
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "devicemanager.h"
-#include "sigsession.h"
+#include "devicemanager.hpp"
+#include "session.hpp"
 
 #include <cassert>
-#include <stdexcept>
+#include <functional>
+#include <memory>
 #include <sstream>
+#include <stdexcept>
 #include <string>
-#include <vector>
 
-#include <libsigrok/libsigrok.hpp>
+#include <libsigrokcxx/libsigrokcxx.hpp>
+
+#include <QApplication>
+#include <QObject>
+#include <QProgressDialog>
 
 #include <boost/filesystem.hpp>
 
-using std::dynamic_pointer_cast;
+#include <pv/devices/hardwaredevice.hpp>
+#include <pv/util.hpp>
+
+using std::bind;
 using std::list;
 using std::map;
-using std::ostringstream;
-using std::remove_if;
-using std::runtime_error;
+using std::placeholders::_1;
+using std::placeholders::_2;
 using std::shared_ptr;
 using std::string;
+using std::unique_ptr;
 using std::vector;
 
 using Glib::VariantBase;
@@ -46,97 +53,264 @@ using Glib::VariantBase;
 using sigrok::ConfigKey;
 using sigrok::Context;
 using sigrok::Driver;
-using sigrok::Device;
-using sigrok::HardwareDevice;
-using sigrok::SessionDevice;
 
 namespace pv {
 
-DeviceManager::DeviceManager(shared_ptr<Context> context) :
-       _context(context)
+DeviceManager::DeviceManager(shared_ptr<Context> context,
+       std::string driver, bool do_scan) :
+       context_(context)
 {
-       for (auto entry : context->drivers())
+       unique_ptr<QProgressDialog> progress(new QProgressDialog("",
+               QObject::tr("Cancel"), 0, context->drivers().size() + 1));
+       progress->setWindowModality(Qt::WindowModal);
+       progress->setMinimumDuration(1);  // To show the dialog immediately
+
+       int entry_num = 1;
+
+       /*
+        * Check the presence of an optional user spec for device scans.
+        * Determine the driver name and options (in generic format) when
+        * applicable.
+        */
+       std::string user_name;
+       vector<std::string> user_opts;
+       if (!driver.empty()) {
+               user_opts = pv::util::split_string(driver, ":");
+               user_name = user_opts.front();
+               user_opts.erase(user_opts.begin());
+       }
+
+       /*
+        * Scan for devices. No specific options apply here, this is
+        * best effort auto detection.
+        */
+       for (auto entry : context->drivers()) {
+               if (!do_scan)
+                       break;
+
+               // Skip drivers we won't scan anyway
+               if (!driver_supported(entry.second))
+                       continue;
+
+               progress->setLabelText(QObject::tr("Scanning for %1...")
+                       .arg(QString::fromStdString(entry.first)));
+
+               if (entry.first == user_name)
+                       continue;
                driver_scan(entry.second, map<const ConfigKey *, VariantBase>());
+
+               progress->setValue(entry_num++);
+               QApplication::processEvents();
+               if (progress->wasCanceled())
+                       break;
+       }
+
+       /*
+        * Optionally run another scan with potentially more specific
+        * options when requested by the user. This is motivated by
+        * several different uses: It can find devices that are not
+        * covered by the above auto detection (UART, TCP). It can
+        * prefer one out of multiple found devices, and have this
+        * device pre-selected for new sessions upon user's request.
+        */
+       user_spec_device_.reset();
+       if (!driver.empty()) {
+               shared_ptr<sigrok::Driver> scan_drv;
+               map<const ConfigKey *, VariantBase> scan_opts;
+
+               /*
+                * Lookup the device driver name.
+                */
+               map<string, shared_ptr<Driver>> drivers = context->drivers();
+               auto entry = drivers.find(user_name);
+               scan_drv = (entry != drivers.end()) ? entry->second : nullptr;
+
+               /*
+                * Convert generic string representation of options
+                * to the driver specific data types.
+                */
+               if (scan_drv && !user_opts.empty()) {
+                       auto drv_opts = scan_drv->scan_options();
+                       scan_opts = drive_scan_options(user_opts, drv_opts);
+               }
+
+               /*
+                * Run another scan for the specified driver, passing
+                * user provided scan options this time.
+                */
+               list< shared_ptr<devices::HardwareDevice> > found;
+               if (scan_drv) {
+                       found = driver_scan(scan_drv, scan_opts);
+                       if (!found.empty())
+                               user_spec_device_ = found.front();
+               }
+       }
+       progress->setValue(entry_num++);
 }
 
-DeviceManager::~DeviceManager()
+const shared_ptr<sigrok::Context>& DeviceManager::context() const
 {
+       return context_;
 }
 
 shared_ptr<Context> DeviceManager::context()
 {
-       return _context;
+       return context_;
 }
 
-const list< shared_ptr<HardwareDevice> >& DeviceManager::devices() const
+const list< shared_ptr<devices::HardwareDevice> >&
+DeviceManager::devices() const
+{
+       return devices_;
+}
+
+/**
+ * Get the device that was detected with user provided scan options.
+ */
+shared_ptr<devices::HardwareDevice>
+DeviceManager::user_spec_device() const
 {
-       return _devices;
+       return user_spec_device_;
 }
 
-list< shared_ptr<HardwareDevice> > DeviceManager::driver_scan(
+/**
+ * Convert generic options to data types that are specific to Driver::scan().
+ *
+ * @param[in] user_spec Vector of tokenized words, string format.
+ * @param[in] driver_opts Driver's scan options, result of Driver::scan_options().
+ *
+ * @return Map of options suitable for Driver::scan().
+ */
+map<const ConfigKey *, Glib::VariantBase>
+DeviceManager::drive_scan_options(vector<string> user_spec,
+       set<const ConfigKey *> driver_opts)
+{
+       map<const ConfigKey *, Glib::VariantBase> result;
+
+       for (auto entry : user_spec) {
+               /*
+                * Split key=value specs. Accept entries without separator
+                * (for simplified boolean specifications).
+                */
+               string key, val;
+               size_t pos = entry.find("=");
+               if (pos == std::string::npos) {
+                       key = entry;
+                       val = "";
+               } else {
+                       key = entry.substr(0, pos);
+                       val = entry.substr(pos + 1);
+               }
+
+               /*
+                * Skip user specifications that are not a member of the
+                * driver's set of supported options. Have the text format
+                * input spec converted to the required driver specific type.
+                */
+               const ConfigKey *cfg;
+               try {
+                       cfg = ConfigKey::get_by_identifier(key);
+                       if (!cfg)
+                               continue;
+                       if (driver_opts.find(cfg) == driver_opts.end())
+                               continue;
+               } catch (...) {
+                       continue;
+               }
+               result[cfg] = cfg->parse_string(val);
+       }
+
+       return result;
+}
+
+bool DeviceManager::driver_supported(shared_ptr<Driver> driver) const
+{
+       /*
+        * We currently only support devices that can deliver samples at
+        * a fixed samplerate (i.e. oscilloscopes and logic analysers).
+        *
+        * @todo Add support for non-monotonic devices (DMMs, sensors, etc).
+        */
+       const auto keys = driver->config_keys();
+
+       return keys.count(ConfigKey::LOGIC_ANALYZER) | keys.count(ConfigKey::OSCILLOSCOPE);
+}
+
+list< shared_ptr<devices::HardwareDevice> >
+DeviceManager::driver_scan(
        shared_ptr<Driver> driver, map<const ConfigKey *, VariantBase> drvopts)
 {
-       list< shared_ptr<HardwareDevice> > driver_devices;
+       list< shared_ptr<devices::HardwareDevice> > driver_devices;
 
        assert(driver);
 
+       if (!driver_supported(driver))
+               return driver_devices;
+
        // Remove any device instances from this driver from the device
        // list. They will not be valid after the scan.
-       _devices.remove_if([&](shared_ptr<HardwareDevice> device) {
-               return device->driver() == driver; });
+       devices_.remove_if([&](shared_ptr<devices::HardwareDevice> device) {
+               return device->hardware_device()->driver() == driver; });
 
        // Do the scan
        auto devices = driver->scan(drvopts);
-       driver_devices.insert(driver_devices.end(), devices.begin(), devices.end());
-       driver_devices.sort(compare_devices);
 
-       // Add the scanned devices to the main list
-       _devices.insert(_devices.end(), driver_devices.begin(),
+       // Add the scanned devices to the main list, set display names and sort.
+       for (shared_ptr<sigrok::HardwareDevice> device : devices) {
+               const shared_ptr<devices::HardwareDevice> d(
+                       new devices::HardwareDevice(context_, device));
+               driver_devices.push_back(d);
+       }
+
+       devices_.insert(devices_.end(), driver_devices.begin(),
                driver_devices.end());
-       _devices.sort(compare_devices);
+       devices_.sort(bind(&DeviceManager::compare_devices, this, _1, _2));
+       driver_devices.sort(bind(
+               &DeviceManager::compare_devices, this, _1, _2));
 
        return driver_devices;
 }
 
 const map<string, string> DeviceManager::get_device_info(
-       shared_ptr<Device> device)
+       shared_ptr<devices::Device> device)
 {
        map<string, string> result;
 
        assert(device);
 
-       if (device->vendor().length() > 0)
-               result["vendor"] = device->vendor();
-       if (device->model().length() > 0)
-               result["model"] = device->model();
-       if (device->version().length() > 0)
-               result["version"] = device->version();
-       if (device->serial_number().length() > 0)
-               result["serial_num"] = device->serial_number();
-       if (device->connection_id().length() > 0)
-               result["connection_id"] = device->connection_id();
+       const shared_ptr<sigrok::Device> sr_dev = device->device();
+       if (sr_dev->vendor().length() > 0)
+               result["vendor"] = sr_dev->vendor();
+       if (sr_dev->model().length() > 0)
+               result["model"] = sr_dev->model();
+       if (sr_dev->version().length() > 0)
+               result["version"] = sr_dev->version();
+       if (sr_dev->serial_number().length() > 0)
+               result["serial_num"] = sr_dev->serial_number();
+       if (sr_dev->connection_id().length() > 0)
+               result["connection_id"] = sr_dev->connection_id();
 
        return result;
 }
 
-const shared_ptr<HardwareDevice> DeviceManager::find_device_from_info(
+const shared_ptr<devices::HardwareDevice> DeviceManager::find_device_from_info(
        const map<string, string> search_info)
 {
-       shared_ptr<HardwareDevice> last_resort_dev;
+       shared_ptr<devices::HardwareDevice> last_resort_dev;
        map<string, string> dev_info;
 
-       last_resort_dev = NULL;
-
-       for (shared_ptr<HardwareDevice> dev : _devices) {
+       for (shared_ptr<devices::HardwareDevice> dev : devices_) {
                assert(dev);
                dev_info = get_device_info(dev);
 
                // If present, vendor and model always have to match.
                if (dev_info.count("vendor") > 0 && search_info.count("vendor") > 0)
-                       if (dev_info.at("vendor") != search_info.at("vendor")) continue;
+                       if (dev_info.at("vendor") != search_info.at("vendor"))
+                               continue;
 
                if (dev_info.count("model") > 0 && search_info.count("model") > 0)
-                       if (dev_info.at("model") != search_info.at("model")) continue;
+                       if (dev_info.at("model") != search_info.at("model"))
+                               continue;
 
                // Most unique match: vendor/model/serial_num (but don't match a S/N of 0)
                if ((dev_info.count("serial_num") > 0) && (dev_info.at("serial_num") != "0")
@@ -170,43 +344,12 @@ const shared_ptr<HardwareDevice> DeviceManager::find_device_from_info(
        return last_resort_dev;
 }
 
-string DeviceManager::device_description(shared_ptr<Device> device)
-{
-       auto session_device = dynamic_pointer_cast<SessionDevice>(device);
-
-       if (session_device)
-               return boost::filesystem::path(
-                       session_device->parent()->filename()).filename().string();
-
-       ostringstream s;
-
-       vector<string> parts = {device->vendor(), device->model(),
-               device->version(), device->serial_number()};
-
-       for (size_t i = 0; i < parts.size(); i++)
-       {
-               if (parts[i].length() > 0)
-               {
-                       if (i != 0)
-                               s << " ";
-                       s << parts[i];
-               }
-       }
-
-       if (device->serial_number().length() == 0 &&
-                       device->connection_id().length() > 0)
-               s << " " << device->connection_id();
-
-       return s.str();
-}
-
-bool DeviceManager::compare_devices(shared_ptr<HardwareDevice> a,
-       shared_ptr<HardwareDevice> b)
+bool DeviceManager::compare_devices(shared_ptr<devices::Device> a,
+       shared_ptr<devices::Device> b)
 {
        assert(a);
        assert(b);
-
-       return device_description(a).compare(device_description(b)) < 0;
+       return a->display_name(*this).compare(b->display_name(*this)) < 0;
 }
 
 } // namespace pv