Add HiresScroll hidpp20 feature

src/logid/CMakeLists.txt

@@ -42,6 +42,7 @@ add_executable(logid
         backend/hidpp20/features/AdjustableDPI.cpp
         backend/hidpp20/features/SmartShift.cpp
         backend/hidpp20/features/ReprogControls.cpp
+        backend/hidpp20/features/HiresScroll.cpp
         backend/dj/Report.cpp
         util/mutex_queue.h
         util/thread.cpp

src/logid/backend/hidpp20/features/HiresScroll.cpp

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019-2020 PixlOne
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <cassert>
+#include "HiresScroll.h"
+
+using namespace logid::backend::hidpp20;
+
+HiresScroll::HiresScroll(Device *device) : Feature(device, ID)
+{
+}
+
+HiresScroll::Capabilities HiresScroll::getCapabilities()
+{
+    std::vector<uint8_t> params(0);
+    auto response = callFunction(GetCapabilities, params);
+
+    Capabilities capabilities{};
+    capabilities.multiplier = response[0];
+    capabilities.flags = response[1];
+    return capabilities;
+}
+
+uint8_t HiresScroll::getMode()
+{
+    std::vector<uint8_t> params(0);
+    auto response = callFunction(GetMode, params);
+    return response[0];
+}
+
+void HiresScroll::setMode(uint8_t mode)
+{
+    std::vector<uint8_t> params(1);
+    params[0] = mode;
+    callFunction(SetMode, params);
+}
+
+bool HiresScroll::getRatchetState()
+{
+    std::vector<uint8_t> params(0);
+    auto response = callFunction(GetRatchetState, params);
+    return params[0];
+}
+
+HiresScroll::WheelStatus HiresScroll::wheelMovementEvent(const hidpp::Report
+    &report)
+{
+    assert(report.function() == WheelMovement);
+    WheelStatus status{};
+    status.hiRes = report.paramBegin()[0] & 1<<4;
+    status.periods = report.paramBegin()[0] & 0x0F;
+    status.deltaV = report.paramBegin()[1] << 8 | report.paramBegin()[2];
+    return status;
+}
+
+HiresScroll::RatchetState HiresScroll::ratchetSwitchEvent(const hidpp::Report
+    &report)
+{
+    assert(report.function() == WheelMovement);
+    // Possible bad cast
+    return static_cast<RatchetState>(report.paramBegin()[0]);
+}

src/logid/backend/hidpp20/features/HiresScroll.h

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2019-2020 PixlOne
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#ifndef LOGID_BACKEND_HIDPP20_FEATURE_HIRESSCROLL_H
+#define LOGID_BACKEND_HIDPP20_FEATURE_HIRESSCROLL_H
+
+#include "../Feature.h"
+#include "../feature_defs.h"
+
+namespace logid {
+namespace backend {
+namespace hidpp20
+{
+    class HiresScroll : public Feature
+    {
+    public:
+        ///TODO: Hires scroll V1?
+        static const uint16_t ID = FeatureID::HIRES_SCROLLING_V2;
+        virtual uint16_t getID() { return ID; }
+
+        enum Function : uint8_t
+        {
+            GetCapabilities = 0,
+            GetMode = 1,
+            SetMode = 2,
+            GetRatchetState = 3
+        };
+
+        enum Event : uint8_t
+        {
+            WheelMovement = 0,
+            RatchetSwitch = 1,
+        };
+
+        enum Capability : uint8_t
+        {
+            Invertable = 1<<3,
+            HasRatchet = 1<<2
+        };
+
+        enum Mode : uint8_t
+        {
+            Inverted = 1<<2,
+            HiRes = 1<<1,
+            Target = 1
+        };
+
+        enum RatchetState : uint8_t
+        {
+            FreeWheel = 0,
+            Ratchet = 1
+        };
+
+        struct Capabilities
+        {
+            uint8_t multiplier;
+            uint8_t flags;
+        };
+
+        struct WheelStatus
+        {
+            bool hiRes;
+            uint8_t periods;
+            uint16_t deltaV;
+        };
+
+        explicit HiresScroll(Device* device);
+
+        Capabilities getCapabilities();
+        uint8_t getMode();
+        void setMode(uint8_t mode);
+        bool getRatchetState();
+
+        ///TODO: Event handlers
+        static WheelStatus wheelMovementEvent(const hidpp::Report& report);
+        static RatchetState ratchetSwitchEvent(const hidpp::Report& report);
+    };
+}}}
+
+#endif //LOGID_BACKEND_HIDPP20_FEATURE_HIRESSCROLL_H