214 lines
6.3 KiB
C++
214 lines
6.3 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/service/service.h"
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#include "common/bit_field.h"
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namespace Kernel {
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class SharedMemory;
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class Event;
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}
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namespace Service {
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namespace HID {
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// Handle to shared memory region designated to HID_User service
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extern Kernel::SharedPtr<Kernel::SharedMemory> g_shared_mem;
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// Event handles
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extern Kernel::SharedPtr<Kernel::Event> g_event_pad_or_touch_1;
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extern Kernel::SharedPtr<Kernel::Event> g_event_pad_or_touch_2;
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extern Kernel::SharedPtr<Kernel::Event> g_event_accelerometer;
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extern Kernel::SharedPtr<Kernel::Event> g_event_gyroscope;
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extern Kernel::SharedPtr<Kernel::Event> g_event_debug_pad;
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/**
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* Structure of a Pad controller state.
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*/
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struct PadState {
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union {
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u32 hex;
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BitField<0, 1, u32> a;
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BitField<1, 1, u32> b;
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BitField<2, 1, u32> select;
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BitField<3, 1, u32> start;
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BitField<4, 1, u32> right;
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BitField<5, 1, u32> left;
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BitField<6, 1, u32> up;
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BitField<7, 1, u32> down;
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BitField<8, 1, u32> r;
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BitField<9, 1, u32> l;
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BitField<10, 1, u32> x;
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BitField<11, 1, u32> y;
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BitField<14, 1, u32> zl;
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BitField<15, 1, u32> zr;
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BitField<20, 1, u32> touch;
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BitField<24, 1, u32> c_right;
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BitField<25, 1, u32> c_left;
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BitField<26, 1, u32> c_up;
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BitField<27, 1, u32> c_down;
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BitField<28, 1, u32> circle_right;
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BitField<29, 1, u32> circle_left;
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BitField<30, 1, u32> circle_up;
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BitField<31, 1, u32> circle_down;
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};
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};
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/**
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* Structure of a single entry of Pad state history within HID shared memory
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*/
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struct PadDataEntry {
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PadState current_state;
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PadState delta_additions;
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PadState delta_removals;
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s16 circle_pad_x;
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s16 circle_pad_y;
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};
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/**
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* Structure of a single entry of touch state history within HID shared memory
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*/
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struct TouchDataEntry {
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u16 x; ///< Y-coordinate of a touchpad press on the lower screen
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u16 y; ///< X-coordinate of a touchpad press on the lower screen
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BitField<0,7,u32> valid; ///< Set to 1 when this entry contains actual X/Y data, otherwise 0
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};
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/**
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* Structure of data stored in HID shared memory
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*/
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struct SharedMem {
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// "Pad data, this is used for buttons and the circle pad
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struct {
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s64 index_reset_ticks;
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s64 index_reset_ticks_previous;
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u32 index; // Index of the last updated pad state history element
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INSERT_PADDING_BYTES(0x8);
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PadState current_state; // Same as entries[index].current_state
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u32 raw_circle_pad_data;
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INSERT_PADDING_BYTES(0x4);
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std::array<PadDataEntry, 8> entries; // Pad state history
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} pad;
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// Touchpad data, this is used for touchpad input
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struct {
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s64 index_reset_ticks;
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s64 index_reset_ticks_previous;
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u32 index; // Index of the last updated touch state history element
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INSERT_PADDING_BYTES(0xC);
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std::array<TouchDataEntry, 8> entries;
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} touch;
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};
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// TODO: MSVC does not support using offsetof() on non-static data members even though this
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// is technically allowed since C++11. This macro should be enabled once MSVC adds
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// support for that.
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#ifndef _MSC_VER
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#define ASSERT_REG_POSITION(field_name, position) \
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static_assert(offsetof(SharedMem, field_name) == position * 4, \
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"Field "#field_name" has invalid position")
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ASSERT_REG_POSITION(pad.index_reset_ticks, 0x0);
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ASSERT_REG_POSITION(touch.index_reset_ticks, 0x2A);
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#undef ASSERT_REG_POSITION
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#endif // !defined(_MSC_VER)
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// Pre-defined PadStates for single button presses
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const PadState PAD_NONE = {{0}};
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const PadState PAD_A = {{1u << 0}};
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const PadState PAD_B = {{1u << 1}};
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const PadState PAD_SELECT = {{1u << 2}};
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const PadState PAD_START = {{1u << 3}};
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const PadState PAD_RIGHT = {{1u << 4}};
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const PadState PAD_LEFT = {{1u << 5}};
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const PadState PAD_UP = {{1u << 6}};
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const PadState PAD_DOWN = {{1u << 7}};
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const PadState PAD_R = {{1u << 8}};
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const PadState PAD_L = {{1u << 9}};
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const PadState PAD_X = {{1u << 10}};
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const PadState PAD_Y = {{1u << 11}};
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const PadState PAD_ZL = {{1u << 14}};
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const PadState PAD_ZR = {{1u << 15}};
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const PadState PAD_TOUCH = {{1u << 20}};
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const PadState PAD_C_RIGHT = {{1u << 24}};
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const PadState PAD_C_LEFT = {{1u << 25}};
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const PadState PAD_C_UP = {{1u << 26}};
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const PadState PAD_C_DOWN = {{1u << 27}};
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const PadState PAD_CIRCLE_RIGHT = {{1u << 28}};
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const PadState PAD_CIRCLE_LEFT = {{1u << 29}};
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const PadState PAD_CIRCLE_UP = {{1u << 30}};
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const PadState PAD_CIRCLE_DOWN = {{1u << 31}};
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/**
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* HID::GetIPCHandles service function
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* Inputs:
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* None
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unused
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* 3 : Handle to HID_User shared memory
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* 4 : Event signaled by HID_User
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* 5 : Event signaled by HID_User
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* 6 : Event signaled by HID_User
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* 7 : Gyroscope event
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* 8 : Event signaled by HID_User
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*/
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void GetIPCHandles(Interface* self);
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/**
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* Sets a Pad state (button or button combo) as pressed
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* @param pad_state PadState data indicating which buttons have been pressed
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*/
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void PadButtonPress(const PadState& pad_state);
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/**
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* Sets a Pad state (button or button combo) as released
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* @param pad_state PadState data indicating which buttons have been released
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*/
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void PadButtonRelease(const PadState& pad_state);
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/**
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* Called after all Pad changes to be included in this update have been made, including both Pad
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* key changes and analog circle Pad changes.
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*/
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void PadUpdateComplete();
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/**
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* Signal that the touchpad has been pressed
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* @param x Touchpad x-coordinate in bottom screen pixels (between 0 and 320)
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* @param y Touchpad y-coordinate in bottom screen pixels (between 0 and 240)
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*/
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void TouchPress(u16 x, u16 y);
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/// Signal that touchpad has been released
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void TouchRelease();
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/// Signal that touchpad updates have been completed
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void TouchUpdateComplete();
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void HIDInit();
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void HIDShutdown();
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}
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}
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