3 files changed, 450 insertions, 17 deletions

diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 3f74aed06..3c4259d27 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -2,7 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <atomic>
 #include "common/logging/log.h"
+#include "core/core_timing.h"
+#include "core/frontend/input.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/client_port.h"
 #include "core/hle/kernel/client_session.h"
@@ -13,6 +16,12 @@
 namespace Service {
 namespace HID {
 
+// Updating period for each HID device.
+// TODO(shinyquagsire23): These need better values.
+constexpr u64 pad_update_ticks = BASE_CLOCK_RATE / 234;
+constexpr u64 accelerometer_update_ticks = BASE_CLOCK_RATE / 104;
+constexpr u64 gyroscope_update_ticks = BASE_CLOCK_RATE / 101;
+
 class IAppletResource final : public ServiceFramework<IAppletResource> {
 public:
     IAppletResource() : ServiceFramework("IAppletResource") {
@@ -24,6 +33,15 @@ public:
         shared_mem = Kernel::SharedMemory::Create(
             nullptr, 0x40000, Kernel::MemoryPermission::ReadWrite, Kernel::MemoryPermission::Read,
             0, Kernel::MemoryRegion::BASE, "HID:SharedMemory");
+
+        // Register update callbacks
+        pad_update_event = CoreTiming::RegisterEvent(
+            "HID::UpdatePadCallback",
+            [this](u64 userdata, int cycles_late) { UpdatePadCallback(userdata, cycles_late); });
+
+        // TODO(shinyquagsire23): Other update callbacks? (accel, gyro?)
+
+        CoreTiming::ScheduleEvent(pad_update_ticks, pad_update_event);
     }
 
 private:
@@ -34,8 +52,76 @@ private:
         LOG_DEBUG(Service, "called");
     }
 
+    void LoadInputDevices() {
+        std::transform(Settings::values.buttons.begin() + Settings::NativeButton::BUTTON_HID_BEGIN,
+                       Settings::values.buttons.begin() + Settings::NativeButton::BUTTON_HID_END,
+                       buttons.begin(), Input::CreateDevice<Input::ButtonDevice>);
+        // TODO(shinyquagsire23): sticks, gyro, touch, mouse, keyboard
+    }
+
+    void UpdatePadCallback(u64 userdata, int cycles_late) {
+        SharedMemory* mem = reinterpret_cast<SharedMemory*>(shared_mem->GetPointer());
+
+        if (is_device_reload_pending.exchange(false))
+            LoadInputDevices();
+
+        // TODO(shinyquagsire23): This is a hack!
+        ControllerPadState& state =
+            mem->controllers[Controller_Handheld].layouts[Layout_Default].entries[0].buttons;
+        using namespace Settings::NativeButton;
+        state.a.Assign(buttons[A - BUTTON_HID_BEGIN]->GetStatus());
+        state.b.Assign(buttons[B - BUTTON_HID_BEGIN]->GetStatus());
+        state.x.Assign(buttons[X - BUTTON_HID_BEGIN]->GetStatus());
+        state.y.Assign(buttons[Y - BUTTON_HID_BEGIN]->GetStatus());
+        state.lstick.Assign(buttons[LStick - BUTTON_HID_BEGIN]->GetStatus());
+        state.rstick.Assign(buttons[RStick - BUTTON_HID_BEGIN]->GetStatus());
+        state.l.Assign(buttons[L - BUTTON_HID_BEGIN]->GetStatus());
+        state.r.Assign(buttons[R - BUTTON_HID_BEGIN]->GetStatus());
+        state.zl.Assign(buttons[ZL - BUTTON_HID_BEGIN]->GetStatus());
+        state.zr.Assign(buttons[ZR - BUTTON_HID_BEGIN]->GetStatus());
+        state.plus.Assign(buttons[Plus - BUTTON_HID_BEGIN]->GetStatus());
+        state.minus.Assign(buttons[Minus - BUTTON_HID_BEGIN]->GetStatus());
+
+        state.dleft.Assign(buttons[DLeft - BUTTON_HID_BEGIN]->GetStatus());
+        state.dup.Assign(buttons[DUp - BUTTON_HID_BEGIN]->GetStatus());
+        state.dright.Assign(buttons[DRight - BUTTON_HID_BEGIN]->GetStatus());
+        state.ddown.Assign(buttons[DDown - BUTTON_HID_BEGIN]->GetStatus());
+
+        state.lstick_left.Assign(buttons[LStick_Left - BUTTON_HID_BEGIN]->GetStatus());
+        state.lstick_up.Assign(buttons[LStick_Up - BUTTON_HID_BEGIN]->GetStatus());
+        state.lstick_right.Assign(buttons[LStick_Right - BUTTON_HID_BEGIN]->GetStatus());
+        state.lstick_down.Assign(buttons[LStick_Down - BUTTON_HID_BEGIN]->GetStatus());
+
+        state.rstick_left.Assign(buttons[RStick_Left - BUTTON_HID_BEGIN]->GetStatus());
+        state.rstick_up.Assign(buttons[RStick_Up - BUTTON_HID_BEGIN]->GetStatus());
+        state.rstick_right.Assign(buttons[RStick_Right - BUTTON_HID_BEGIN]->GetStatus());
+        state.rstick_down.Assign(buttons[RStick_Down - BUTTON_HID_BEGIN]->GetStatus());
+
+        state.sl.Assign(buttons[SL - BUTTON_HID_BEGIN]->GetStatus());
+        state.sr.Assign(buttons[SR - BUTTON_HID_BEGIN]->GetStatus());
+
+        // TODO(shinyquagsire23): Analog stick vals
+
+        // TODO(shinyquagsire23): Update pad info proper, (circular buffers, timestamps, layouts)
+
+        // TODO(shinyquagsire23): Update touch info
+
+        // TODO(shinyquagsire23): Signal events
+
+        // Reschedule recurrent event
+        CoreTiming::ScheduleEvent(pad_update_ticks - cycles_late, pad_update_event);
+    }
+
     // Handle to shared memory region designated to HID service
     Kernel::SharedPtr<Kernel::SharedMemory> shared_mem;
+
+    // CoreTiming update events
+    CoreTiming::EventType* pad_update_event;
+
+    // Stored input state info
+    std::atomic<bool> is_device_reload_pending{true};
+    std::array<std::unique_ptr<Input::ButtonDevice>, Settings::NativeButton::NUM_BUTTONS_HID>
+        buttons;
 };
 
 class Hid final : public ServiceFramework<Hid> {
diff --git a/src/core/hle/service/hid/hid.h b/src/core/hle/service/hid/hid.h
index f7621f62d..486e64800 100644
--- a/src/core/hle/service/hid/hid.h
+++ b/src/core/hle/service/hid/hid.h
@@ -5,10 +5,322 @@
 #pragma once
 
 #include "core/hle/service/service.h"
+#include "core/settings.h"
 
 namespace Service {
 namespace HID {
 
+// Begin enums and output structs
+
+enum ControllerType : u32 {
+    ControllerType_ProController = 1 << 0,
+    ControllerType_Handheld = 1 << 1,
+    ControllerType_JoyconPair = 1 << 2,
+    ControllerType_JoyconLeft = 1 << 3,
+    ControllerType_JoyconRight = 1 << 4,
+};
+
+enum ControllerLayoutType : u32 {
+    Layout_ProController = 0, // Pro Controller or HID gamepad
+    Layout_Handheld = 1,      // Two Joy-Con docked to rails
+    Layout_Single = 2, // Horizontal single Joy-Con or pair of Joy-Con, adjusted for orientation
+    Layout_Left = 3,   // Only raw left Joy-Con state, no orientation adjustment
+    Layout_Right = 4,  // Only raw right Joy-Con state, no orientation adjustment
+    Layout_DefaultDigital = 5, // Same as next, but sticks have 8-direction values only
+    Layout_Default = 6, // Safe default, single Joy-Con have buttons/sticks rotated for orientation
+};
+
+enum ControllerColorDescription {
+    ColorDesc_ColorsNonexistent = 1 << 1,
+};
+
+enum ControllerConnectionState {
+    ConnectionState_Connected = 1 << 0,
+    ConnectionState_Wired = 1 << 1,
+};
+
+enum ControllerID {
+    Controller_Player1 = 0,
+    Controller_Player2 = 1,
+    Controller_Player3 = 2,
+    Controller_Player4 = 3,
+    Controller_Player5 = 4,
+    Controller_Player6 = 5,
+    Controller_Player7 = 6,
+    Controller_Player8 = 7,
+    Controller_Handheld = 8,
+    Controller_Unknown = 9,
+};
+
+// End enums and output structs
+
+// Begin TouchScreen
+
+struct TouchScreenHeader {
+    u64 timestampTicks;
+    u64 numEntries;
+    u64 latestEntry;
+    u64 maxEntryIndex;
+    u64 timestamp;
+};
+static_assert(sizeof(TouchScreenHeader) == 0x28,
+              "HID touch screen header structure has incorrect size");
+
+struct TouchScreenEntryHeader {
+    u64 timestamp;
+    u64 numTouches;
+};
+static_assert(sizeof(TouchScreenEntryHeader) == 0x10,
+              "HID touch screen entry header structure has incorrect size");
+
+struct TouchScreenEntryTouch {
+    u64 timestamp;
+    u32 padding;
+    u32 touchIndex;
+    u32 x;
+    u32 y;
+    u32 diameterX;
+    u32 diameterY;
+    u32 angle;
+    u32 padding_2;
+};
+static_assert(sizeof(TouchScreenEntryTouch) == 0x28,
+              "HID touch screen touch structure has incorrect size");
+
+struct TouchScreenEntry {
+    TouchScreenEntryHeader header;
+    std::array<TouchScreenEntryTouch, 16> touches;
+    u64 unk;
+};
+static_assert(sizeof(TouchScreenEntry) == 0x298,
+              "HID touch screen entry structure has incorrect size");
+
+struct TouchScreen {
+    TouchScreenHeader header;
+    std::array<TouchScreenEntry, 17> entries;
+    std::array<u8, 0x3c0> padding;
+};
+static_assert(sizeof(TouchScreen) == 0x3000, "HID touch screen structure has incorrect size");
+
+// End TouchScreen
+
+// Begin Mouse
+
+struct MouseHeader {
+    u64 timestampTicks;
+    u64 numEntries;
+    u64 latestEntry;
+    u64 maxEntryIndex;
+};
+static_assert(sizeof(MouseHeader) == 0x20, "HID mouse header structure has incorrect size");
+
+struct MouseButtonState {
+    union {
+        u64 hex{};
+
+        // Buttons
+        BitField<0, 1, u64> left;
+        BitField<1, 1, u64> right;
+        BitField<2, 1, u64> middle;
+        BitField<3, 1, u64> forward;
+        BitField<4, 1, u64> back;
+    };
+};
+
+struct MouseEntry {
+    u64 timestamp;
+    u64 timestamp_2;
+    u32 x;
+    u32 y;
+    u32 velocityX;
+    u32 velocityY;
+    u32 scrollVelocityX;
+    u32 scrollVelocityY;
+    MouseButtonState buttons;
+};
+static_assert(sizeof(MouseEntry) == 0x30, "HID mouse entry structure has incorrect size");
+
+struct Mouse {
+    MouseHeader header;
+    std::array<MouseEntry, 17> entries;
+    std::array<u8, 0xB0> padding;
+};
+static_assert(sizeof(Mouse) == 0x400, "HID mouse structure has incorrect size");
+
+// End Mouse
+
+// Begin Keyboard
+
+struct KeyboardHeader {
+    u64 timestampTicks;
+    u64 numEntries;
+    u64 latestEntry;
+    u64 maxEntryIndex;
+};
+static_assert(sizeof(KeyboardHeader) == 0x20, "HID keyboard header structure has incorrect size");
+
+struct KeyboardModifierKeyState {
+    union {
+        u64 hex{};
+
+        // Buttons
+        BitField<0, 1, u64> lctrl;
+        BitField<1, 1, u64> lshift;
+        BitField<2, 1, u64> lalt;
+        BitField<3, 1, u64> lmeta;
+        BitField<4, 1, u64> rctrl;
+        BitField<5, 1, u64> rshift;
+        BitField<6, 1, u64> ralt;
+        BitField<7, 1, u64> rmeta;
+        BitField<8, 1, u64> capslock;
+        BitField<9, 1, u64> scrolllock;
+        BitField<10, 1, u64> numlock;
+    };
+};
+
+struct KeyboardEntry {
+    u64 timestamp;
+    u64 timestamp_2;
+    KeyboardModifierKeyState modifier;
+    u32 keys[8];
+};
+static_assert(sizeof(KeyboardEntry) == 0x38, "HID keyboard entry structure has incorrect size");
+
+struct Keyboard {
+    KeyboardHeader header;
+    std::array<KeyboardEntry, 17> entries;
+    std::array<u8, 0x28> padding;
+};
+static_assert(sizeof(Keyboard) == 0x400, "HID keyboard structure has incorrect size");
+
+// End Keyboard
+
+// Begin Controller
+
+struct ControllerMAC {
+    u64 timestamp;
+    std::array<u8, 0x8> mac;
+    u64 unk;
+    u64 timestamp_2;
+};
+static_assert(sizeof(ControllerMAC) == 0x20, "HID controller MAC structure has incorrect size");
+
+struct ControllerHeader {
+    u32 type;
+    u32 isHalf;
+    u32 singleColorsDescriptor;
+    u32 singleColorBody;
+    u32 singleColorButtons;
+    u32 splitColorsDescriptor;
+    u32 leftColorBody;
+    u32 leftColorButtons;
+    u32 rightColorBody;
+    u32 rightColorbuttons;
+};
+static_assert(sizeof(ControllerHeader) == 0x28,
+              "HID controller header structure has incorrect size");
+
+struct ControllerLayoutHeader {
+    u64 timestampTicks;
+    u64 numEntries;
+    u64 latestEntry;
+    u64 maxEntryIndex;
+};
+static_assert(sizeof(ControllerLayoutHeader) == 0x20,
+              "HID controller layout header structure has incorrect size");
+
+struct ControllerPadState {
+    union {
+        u64 hex{};
+
+        // Buttons
+        BitField<0, 1, u64> a;
+        BitField<1, 1, u64> b;
+        BitField<2, 1, u64> x;
+        BitField<3, 1, u64> y;
+        BitField<4, 1, u64> lstick;
+        BitField<5, 1, u64> rstick;
+        BitField<6, 1, u64> l;
+        BitField<7, 1, u64> r;
+        BitField<8, 1, u64> zl;
+        BitField<9, 1, u64> zr;
+        BitField<10, 1, u64> plus;
+        BitField<11, 1, u64> minus;
+
+        // D-pad buttons
+        BitField<12, 1, u64> dleft;
+        BitField<13, 1, u64> dup;
+        BitField<14, 1, u64> dright;
+        BitField<15, 1, u64> ddown;
+
+        // Left stick directions
+        BitField<16, 1, u64> lstick_left;
+        BitField<17, 1, u64> lstick_up;
+        BitField<18, 1, u64> lstick_right;
+        BitField<19, 1, u64> lstick_down;
+
+        // Right stick directions
+        BitField<20, 1, u64> rstick_left;
+        BitField<21, 1, u64> rstick_up;
+        BitField<22, 1, u64> rstick_right;
+        BitField<23, 1, u64> rstick_down;
+
+        BitField<24, 1, u64> sl;
+        BitField<25, 1, u64> sr;
+    };
+};
+
+struct ControllerInputEntry {
+    u64 timestamp;
+    u64 timestamp_2;
+    ControllerPadState buttons;
+    u32 joystickLeftX;
+    u32 joystickLeftY;
+    u32 joystickRightX;
+    u32 joystickRightY;
+    u64 connectionState;
+};
+static_assert(sizeof(ControllerInputEntry) == 0x30,
+              "HID controller input entry structure has incorrect size");
+
+struct ControllerLayout {
+    ControllerLayoutHeader header;
+    std::array<ControllerInputEntry, 17> entries;
+};
+static_assert(sizeof(ControllerLayout) == 0x350,
+              "HID controller layout structure has incorrect size");
+
+struct Controller {
+    ControllerHeader header;
+    std::array<ControllerLayout, 7> layouts;
+    std::array<u8, 0x2a70> unk_1;
+    ControllerMAC macLeft;
+    ControllerMAC macRight;
+    std::array<u8, 0xdf8> unk_2;
+};
+static_assert(sizeof(Controller) == 0x5000, "HID controller structure has incorrect size");
+
+// End Controller
+
+struct SharedMemory {
+    std::array<u8, 0x400> header;
+    TouchScreen touchscreen;
+    Mouse mouse;
+    Keyboard keyboard;
+    std::array<u8, 0x400> unkSection1;
+    std::array<u8, 0x400> unkSection2;
+    std::array<u8, 0x400> unkSection3;
+    std::array<u8, 0x400> unkSection4;
+    std::array<u8, 0x200> unkSection5;
+    std::array<u8, 0x200> unkSection6;
+    std::array<u8, 0x200> unkSection7;
+    std::array<u8, 0x800> unkSection8;
+    std::array<u8, 0x4000> controllerSerials;
+    std::array<Controller, 10> controllers;
+    std::array<u8, 0x4600> unkSection9;
+};
+static_assert(sizeof(SharedMemory) == 0x40000, "HID Shared Memory structure has incorrect size");
+
 /// Reload input devices. Used when input configuration changed
 void ReloadInputDevices();
 
diff --git a/src/core/settings.h b/src/core/settings.h
index f2c88e5d4..bd9a3d9fe 100644
--- a/src/core/settings.h
+++ b/src/core/settings.h
@@ -16,52 +16,87 @@ enum Values {
     B,
     X,
     Y,
-    Up,
-    Down,
-    Left,
-    Right,
+    LStick,
+    RStick,
     L,
     R,
-    Start,
-    Select,
-
     ZL,
     ZR,
+    Plus,
+    Minus,
+
+    DLeft,
+    DUp,
+    DRight,
+    DDown,
+
+    LStick_Left,
+    LStick_Up,
+    LStick_Right,
+    LStick_Down,
+
+    RStick_Left,
+    RStick_Up,
+    RStick_Right,
+    RStick_Down,
+
+    SL,
+    SR,
 
     Home,
+    Screenshot,
 
     NumButtons,
 };
 
 constexpr int BUTTON_HID_BEGIN = A;
-constexpr int BUTTON_IR_BEGIN = ZL;
 constexpr int BUTTON_NS_BEGIN = Home;
 
-constexpr int BUTTON_HID_END = BUTTON_IR_BEGIN;
-constexpr int BUTTON_IR_END = BUTTON_NS_BEGIN;
+constexpr int BUTTON_HID_END = BUTTON_NS_BEGIN;
 constexpr int BUTTON_NS_END = NumButtons;
 
 constexpr int NUM_BUTTONS_HID = BUTTON_HID_END - BUTTON_HID_BEGIN;
-constexpr int NUM_BUTTONS_IR = BUTTON_IR_END - BUTTON_IR_BEGIN;
 constexpr int NUM_BUTTONS_NS = BUTTON_NS_END - BUTTON_NS_BEGIN;
 
 static const std::array<const char*, NumButtons> mapping = {{
-    "button_a", "button_b", "button_x", "button_y", "button_up", "button_down", "button_left",
-    "button_right", "button_l", "button_r", "button_start", "button_select", "button_zl",
-    "button_zr", "button_home",
+    "button_a",
+    "button_b",
+    "button_x",
+    "button_y",
+    "button_lstick",
+    "button_rstick",
+    "button_l",
+    "button_r",
+    "button_zl",
+    "button_zr",
+    "button_plus",
+    "button_minus",
+    "button_dleft",
+    "button_dup",
+    "button_dright",
+    "button_ddown",
+    "button_lstick_left",
+    "button_lstick_up",
+    "button_lstick_right",
+    "button_lstick_down",
+    "button_sl",
+    "button_sr",
+    "button_home",
+    "button_screenshot",
 }};
 } // namespace NativeButton
 
 namespace NativeAnalog {
 enum Values {
-    CirclePad,
-    CStick,
+    LStick,
+    RStick,
 
     NumAnalogs,
 };
 
 static const std::array<const char*, NumAnalogs> mapping = {{
-    "circle_pad", "c_stick",
+    "lstick",
+    "rstick",
 }};
 } // namespace NativeAnalog