Implement logid::backend::dj::ReceiverMonitor

src/logid/CMakeLists.txt

@@ -18,6 +18,7 @@ add_executable(logid
         backend/raw/DeviceMonitor.cpp
         backend/raw/RawDevice.cpp
         backend/dj/Receiver.cpp
+        backend/dj/ReceiverMonitor.cpp
         backend/dj/Error.cpp
         backend/hidpp/Device.cpp
         backend/hidpp/Report.cpp

src/logid/backend/dj/Receiver.cpp

@@ -12,7 +12,13 @@ InvalidReceiver::InvalidReceiver(Reason reason) : _reason (reason)
 
 const char* InvalidReceiver::what() const noexcept
 {
-    return "Invalid receiver";
+    switch(_reason)
+    {
+        case NoDJReports:
+            return "No DJ reports";
+        default:
+            return "Invalid receiver";
+    }
 }
 
 InvalidReceiver::Reason InvalidReceiver::code() const noexcept
@@ -69,10 +75,11 @@ Receiver::notification_flags Receiver::getHidppNotifications()
     auto response = _hidpp10_device.getRegister(EnableHidppNotifications, {});
 
     notification_flags flags{};
-
     flags.device_battery_status = response[0] & (1 << 4);
     flags.receiver_wireless_notifications = response[1] & (1 << 0);
     flags.receiver_software_present = response[1] & (1 << 3);
+
+    return flags;
 }
 
 void Receiver::enableHidppNotifications(notification_flags flags)
@@ -142,7 +149,8 @@ std::map<hidpp::DeviceIndex, uint8_t> Receiver::getDeviceActivity()
     return device_activity;
 }
 
-Receiver::pairing_info Receiver::getPairingInfo(hidpp::DeviceIndex index)
+struct Receiver::PairingInfo
+    Receiver::getPairingInfo(hidpp::DeviceIndex index)
 {
     std::vector<uint8_t> request(1);
     request[0] = index;
@@ -150,17 +158,17 @@ Receiver::pairing_info Receiver::getPairingInfo(hidpp::DeviceIndex index)
 
     auto response = _hidpp10_device.getRegister(PairingInfo, request);
 
-    pairing_info info{};
-    info.destination_id = response[0];
-    info.report_interval = response[1];
+    struct PairingInfo info{};
+    info.destinationId = response[0];
+    info.reportInterval = response[1];
     info.pid = response[2];
     info.pid |= (response[3] << 8);
-    info.device_type = response[6];
+    info.deviceType = static_cast<DeviceType::DeviceType>(response[6]);
 
     return info;
 }
 
-Receiver::extended_pairing_info
+struct Receiver::ExtendedPairingInfo
     Receiver::getExtendedPairingInfo(hidpp::DeviceIndex index)
 {
     std::vector<uint8_t> request(1);
@@ -169,16 +177,16 @@ Receiver::extended_pairing_info
 
     auto response = _hidpp10_device.getRegister(PairingInfo, request);
 
-    extended_pairing_info info{};
+    ExtendedPairingInfo info{};
 
-    info.serial_number = 0;
+    info.serialNumber = 0;
     for(uint8_t i = 0; i < 4; i++)
-        info.serial_number |= (response[i] << 8*i);
+        info.serialNumber |= (response[i] << 8*i);
 
     for(uint8_t i = 0; i < 4; i++)
-        info.report_types[i] = response[i + 4];
+        info.reportTypes[i] = response[i + 4];
 
-    info.power_switch_location = response[8] & 0xf;
+    info.powerSwitchLocation = response[8] & 0xf;
 
     return info;
 }
@@ -201,16 +209,33 @@ std::string Receiver::getDeviceName(hidpp::DeviceIndex index)
     return name;
 }
 
-hidpp::DeviceIndex Receiver::deviceConnectionEvent(hidpp::Report &report)
+hidpp::DeviceIndex Receiver::deviceDisconnectionEvent(hidpp::Report& report)
 {
-    assert(report.subId() == DeviceConnection);
+    assert(report.subId() == DeviceDisconnection);
     return report.deviceIndex();
 }
 
-hidpp::DeviceIndex Receiver::deviceDisconnectionEvent(hidpp::Report& report)
+Receiver::DeviceConnectionEvent Receiver::deviceConnectionEvent(
+        hidpp::Report &report)
 {
-    assert(report.subId() == DeviceDisconnection);
-    return report.deviceIndex();
+    assert(report.subId() == DeviceConnection);
+
+    DeviceConnectionEvent event{};
+
+    event.index = report.deviceIndex();
+    event.unifying = ((report.paramBegin()[0] & 0b111) == 0x04);
+
+    event.deviceType = static_cast<DeviceType::DeviceType>(
+            report.paramBegin()[1] & 0x0f);
+    event.softwarePresent = report.paramBegin()[1] & (1<<4);
+    event.encrypted = report.paramBegin()[1] & (1<<5);
+    event.linkEstablished = report.paramBegin()[1] & (1<<6);
+    event.withPayload = report.paramBegin()[1] & (1<<7);
+
+    event.pid = report.paramBegin()[3];
+    event.pid |= (report.paramBegin()[2] << 8);
+
+    return event;
 }
 
 void Receiver::handleDjEvent(Report& report)
@@ -252,4 +277,9 @@ void Receiver::sendDjRequest(hidpp::DeviceIndex index, uint8_t function,
 void Receiver::listen()
 {
     std::thread{[=]() { raw_device->listen(); }}.detach();
+}
+
+void Receiver::stopListening()
+{
+    raw_device->stopListener();
 }

src/logid/backend/dj/Receiver.h

@@ -86,33 +86,49 @@ namespace dj
 
         std::map<hidpp::DeviceIndex, uint8_t> getDeviceActivity();
 
-        struct pairing_info
+        struct PairingInfo
         {
-            uint8_t destination_id;
-            uint8_t report_interval;
+            uint8_t destinationId;
+            uint8_t reportInterval;
             uint16_t pid;
-            uint8_t device_type; ///TODO: Create enum for DeviceType
+            DeviceType::DeviceType deviceType;
         };
 
-        struct extended_pairing_info
+        struct ExtendedPairingInfo
         {
-            uint32_t serial_number;
-            uint8_t report_types[4];
-            uint8_t power_switch_location; ///TODO: Create enum
+            uint32_t serialNumber;
+            uint8_t reportTypes[4];
+            uint8_t powerSwitchLocation; ///TODO: Make enum
         };
 
-        pairing_info getPairingInfo(hidpp::DeviceIndex index);
-        extended_pairing_info getExtendedPairingInfo(hidpp::DeviceIndex index);
+        struct PairingInfo getPairingInfo(hidpp::DeviceIndex index);
+        struct ExtendedPairingInfo getExtendedPairingInfo(hidpp::DeviceIndex
+                index);
 
         std::string getDeviceName(hidpp::DeviceIndex index);
 
-        hidpp::DeviceIndex deviceConnectionEvent(hidpp::Report& report);
-        hidpp::DeviceIndex deviceDisconnectionEvent(hidpp::Report& report);
+        struct DeviceConnectionEvent
+        {
+            hidpp::DeviceIndex index;
+            uint16_t pid;
+            DeviceType::DeviceType deviceType;
+            bool unifying;
+            bool softwarePresent;
+            bool encrypted;
+            bool linkEstablished;
+            bool withPayload;
+        };
+
+        static hidpp::DeviceIndex deviceDisconnectionEvent(
+                hidpp::Report& report);
+        static DeviceConnectionEvent deviceConnectionEvent(
+                hidpp::Report& report);
 
         void handleDjEvent(dj::Report& report);
         void handleHidppEvent(hidpp::Report& report);
 
         void listen();
+        void stopListening();
     private:
         void sendDjRequest(hidpp::DeviceIndex index, uint8_t function,
                 const std::vector<uint8_t>&& params);

src/logid/backend/dj/ReceiverMonitor.cpp

@@ -0,0 +1,30 @@
+#include "ReceiverMonitor.h"
+
+#include <utility>
+
+using namespace logid::backend::dj;
+
+ReceiverMonitor::ReceiverMonitor(std::string path) : _reciever (std::move(path))
+{
+    Receiver::notification_flags notification_flags{
+        true,
+        true,
+        true};
+   _reciever.enableHidppNotifications(notification_flags);
+}
+
+void ReceiverMonitor::run()
+{
+    _reciever.listen();
+    enumerate();
+}
+
+void ReceiverMonitor::stop()
+{
+    _reciever.stopListening();
+}
+
+void ReceiverMonitor::enumerate()
+{
+    _reciever.enumerate();
+}

src/logid/backend/dj/ReceiverMonitor.h

@@ -1,6 +1,38 @@
 #ifndef LOGID_BACKEND_DJ_RECEIVERMONITOR_H
 #define LOGID_BACKEND_DJ_RECEIVERMONITOR_H
 
+#include <cstdint>
+#include <string>
+#include "Receiver.h"
+#include "../hidpp/defs.h"
 
+namespace logid {
+namespace backend {
+namespace dj
+{
+    // This class will run on the RawDevice thread,
+    class ReceiverMonitor
+    {
+    public:
+        ReceiverMonitor(std::string path);
+
+        void enumerate();
+        void run();
+        void stop();
+
+    protected:
+        virtual void addDevice(hidpp::DeviceIndex index, uint16_t pid) = 0;
+        virtual void removeDevice(hidpp::DeviceIndex index) = 0;
+
+        // Internal methods for derived class
+        void _pair(uint8_t timeout = 0);
+        void _stopPairing();
+
+        void _unpair();
+    private:
+        Receiver _reciever;
+    };
+
+}}}
 
 #endif //LOGID_BACKEND_DJ_RECEIVERMONITOR_H

src/logid/backend/dj/defs.h

@@ -16,6 +16,21 @@ namespace dj
         };
     }
 
+    namespace DeviceType
+    {
+        enum DeviceType : uint8_t
+        {
+            Unknown = 0x00,
+            Keyboard = 0x01,
+            Mouse = 0x02,
+            Numpad = 0x03,
+            Presenter = 0x04,
+            /* 0x05-0x07 is reserved */
+            Trackball = 0x08,
+            Touchpad = 0x09
+        };
+    }
+
     static constexpr uint8_t ErrorFeature = 0x7f;
 
     static constexpr std::size_t HeaderLength = 3;