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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "core/hle/kernel/kernel.h"
#include "core/hle/service/service.h"
#include "common/bit_field.h"
namespace Kernel {
class SharedMemory;
class Event;
}
namespace Service {
namespace HID {
/**
* Structure of a Pad controller state.
*/
struct PadState {
union {
u32 hex;
BitField<0, 1, u32> a;
BitField<1, 1, u32> b;
BitField<2, 1, u32> select;
BitField<3, 1, u32> start;
BitField<4, 1, u32> right;
BitField<5, 1, u32> left;
BitField<6, 1, u32> up;
BitField<7, 1, u32> down;
BitField<8, 1, u32> r;
BitField<9, 1, u32> l;
BitField<10, 1, u32> x;
BitField<11, 1, u32> y;
BitField<14, 1, u32> zl;
BitField<15, 1, u32> zr;
BitField<20, 1, u32> touch;
BitField<24, 1, u32> c_right;
BitField<25, 1, u32> c_left;
BitField<26, 1, u32> c_up;
BitField<27, 1, u32> c_down;
BitField<28, 1, u32> circle_right;
BitField<29, 1, u32> circle_left;
BitField<30, 1, u32> circle_up;
BitField<31, 1, u32> circle_down;
};
};
/**
* Structure of a single entry of Pad state history within HID shared memory
*/
struct PadDataEntry {
PadState current_state;
PadState delta_additions;
PadState delta_removals;
s16 circle_pad_x;
s16 circle_pad_y;
};
/**
* Structure of a single entry of touch state history within HID shared memory
*/
struct TouchDataEntry {
u16 x; ///< Y-coordinate of a touchpad press on the lower screen
u16 y; ///< X-coordinate of a touchpad press on the lower screen
BitField<0, 7, u32> valid; ///< Set to 1 when this entry contains actual X/Y data, otherwise 0
};
/**
* Structure of data stored in HID shared memory
*/
struct SharedMem {
/// Pad data, this is used for buttons and the circle pad
struct {
s64 index_reset_ticks; ///< CPU tick count for when HID module updated entry index 0
s64 index_reset_ticks_previous; ///< Previous `index_reset_ticks`
u32 index; ///< Index of the last updated pad state entry
INSERT_PADDING_WORDS(0x2);
PadState current_state; ///< Current state of the pad buttons
// TODO(bunnei): Implement `raw_circle_pad_data` field
u32 raw_circle_pad_data; ///< Raw (analog) circle pad data, before being converted
INSERT_PADDING_WORDS(0x1);
std::array<PadDataEntry, 8> entries; ///< Last 8 pad entries
} pad;
/// Touchpad data, this is used for touchpad input
struct {
s64 index_reset_ticks; ///< CPU tick count for when HID module updated entry index 0
s64 index_reset_ticks_previous; ///< Previous `index_reset_ticks`
u32 index; ///< Index of the last updated touch entry
INSERT_PADDING_WORDS(0x1);
// TODO(bunnei): Implement `raw_entry` field
TouchDataEntry raw_entry; ///< Raw (analog) touch data, before being converted
std::array<TouchDataEntry, 8> entries; ///< Last 8 touch entries, in pixel coordinates
} touch;
};
// TODO: MSVC does not support using offsetof() on non-static data members even though this
// is technically allowed since C++11. This macro should be enabled once MSVC adds
// support for that.
#ifndef _MSC_VER
#define ASSERT_REG_POSITION(field_name, position) \
static_assert(offsetof(SharedMem, field_name) == position * 4, \
"Field "#field_name" has invalid position")
ASSERT_REG_POSITION(pad.index_reset_ticks, 0x0);
ASSERT_REG_POSITION(touch.index_reset_ticks, 0x2A);
#undef ASSERT_REG_POSITION
#endif // !defined(_MSC_VER)
// Pre-defined PadStates for single button presses
const PadState PAD_NONE = {{0}};
const PadState PAD_A = {{1u << 0}};
const PadState PAD_B = {{1u << 1}};
const PadState PAD_SELECT = {{1u << 2}};
const PadState PAD_START = {{1u << 3}};
const PadState PAD_RIGHT = {{1u << 4}};
const PadState PAD_LEFT = {{1u << 5}};
const PadState PAD_UP = {{1u << 6}};
const PadState PAD_DOWN = {{1u << 7}};
const PadState PAD_R = {{1u << 8}};
const PadState PAD_L = {{1u << 9}};
const PadState PAD_X = {{1u << 10}};
const PadState PAD_Y = {{1u << 11}};
const PadState PAD_ZL = {{1u << 14}};
const PadState PAD_ZR = {{1u << 15}};
const PadState PAD_TOUCH = {{1u << 20}};
const PadState PAD_C_RIGHT = {{1u << 24}};
const PadState PAD_C_LEFT = {{1u << 25}};
const PadState PAD_C_UP = {{1u << 26}};
const PadState PAD_C_DOWN = {{1u << 27}};
const PadState PAD_CIRCLE_RIGHT = {{1u << 28}};
const PadState PAD_CIRCLE_LEFT = {{1u << 29}};
const PadState PAD_CIRCLE_UP = {{1u << 30}};
const PadState PAD_CIRCLE_DOWN = {{1u << 31}};
/**
* HID::GetIPCHandles service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : IPC Command Structure translate-header
* 3 : Handle to HID_User shared memory
* 4 : Event signaled by HID_User
* 5 : Event signaled by HID_User
* 6 : Event signaled by HID_User
* 7 : Gyroscope event
* 8 : Event signaled by HID_User
*/
void GetIPCHandles(Interface* self);
/**
* HID::EnableAccelerometer service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
void EnableAccelerometer(Interface* self);
/**
* HID::EnableGyroscopeLow service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
void EnableGyroscopeLow(Interface* self);
/**
* HID::GetSoundVolume service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : u8 output value
*/
void GetSoundVolume(Interface* self);
/// Checks for user input updates
void Update();
/// Initialize HID service
void Init();
/// Shutdown HID service
void Shutdown();
}
}
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