suyu/src/core/hle/service/hid/hid.cpp

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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
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#include <cmath>
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#include "common/emu_window.h"
#include "common/logging/log.h"
#include "core/core_timing.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/service/hid/hid.h"
#include "core/hle/service/hid/hid_spvr.h"
#include "core/hle/service/hid/hid_user.h"
#include "core/hle/service/service.h"
#include "video_core/video_core.h"
namespace Service {
namespace HID {
// Handle to shared memory region designated to HID_User service
static Kernel::SharedPtr<Kernel::SharedMemory> shared_mem;
// Event handles
static Kernel::SharedPtr<Kernel::Event> event_pad_or_touch_1;
static Kernel::SharedPtr<Kernel::Event> event_pad_or_touch_2;
static Kernel::SharedPtr<Kernel::Event> event_accelerometer;
static Kernel::SharedPtr<Kernel::Event> event_gyroscope;
static Kernel::SharedPtr<Kernel::Event> event_debug_pad;
static u32 next_pad_index;
static u32 next_touch_index;
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static u32 next_accelerometer_index;
static u32 next_gyroscope_index;
static int enable_accelerometer_count = 0; // positive means enabled
static int enable_gyroscope_count = 0; // positive means enabled
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static PadState GetCirclePadDirectionState(s16 circle_pad_x, s16 circle_pad_y) {
// 30 degree and 60 degree are angular thresholds for directions
constexpr float TAN30 = 0.577350269, TAN60 = 1 / TAN30;
// a circle pad radius greater than 40 will trigger circle pad direction
constexpr int CIRCLE_PAD_THRESHOLD_SQUARE = 40 * 40;
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PadState state;
state.hex = 0;
if (circle_pad_x * circle_pad_x + circle_pad_y * circle_pad_y > CIRCLE_PAD_THRESHOLD_SQUARE) {
float t = std::abs(static_cast<float>(circle_pad_y) / circle_pad_x);
if (circle_pad_x != 0 && t < TAN60) {
if (circle_pad_x > 0)
state.circle_right.Assign(1);
else
state.circle_left.Assign(1);
}
if (circle_pad_x == 0 || t > TAN30) {
if (circle_pad_y > 0)
state.circle_up.Assign(1);
else
state.circle_down.Assign(1);
}
}
return state;
}
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void Update() {
SharedMem* mem = reinterpret_cast<SharedMem*>(shared_mem->GetPointer());
if (mem == nullptr) {
LOG_DEBUG(Service_HID, "Cannot update HID prior to mapping shared memory!");
return;
}
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PadState state = VideoCore::g_emu_window->GetPadState();
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// Get current circle pad position and update circle pad direction
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s16 circle_pad_x, circle_pad_y;
std::tie(circle_pad_x, circle_pad_y) = VideoCore::g_emu_window->GetCirclePadState();
state.hex |= GetCirclePadDirectionState(circle_pad_x, circle_pad_y).hex;
mem->pad.current_state.hex = state.hex;
mem->pad.index = next_pad_index;
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next_pad_index = (next_pad_index + 1) % mem->pad.entries.size();
// Get the previous Pad state
u32 last_entry_index = (mem->pad.index - 1) % mem->pad.entries.size();
PadState old_state = mem->pad.entries[last_entry_index].current_state;
// Compute bitmask with 1s for bits different from the old state
PadState changed = {{(state.hex ^ old_state.hex)}};
// Get the current Pad entry
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PadDataEntry& pad_entry = mem->pad.entries[mem->pad.index];
// Update entry properties
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pad_entry.current_state.hex = state.hex;
pad_entry.delta_additions.hex = changed.hex & state.hex;
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pad_entry.delta_removals.hex = changed.hex & old_state.hex;
pad_entry.circle_pad_x = circle_pad_x;
pad_entry.circle_pad_y = circle_pad_y;
// If we just updated index 0, provide a new timestamp
if (mem->pad.index == 0) {
mem->pad.index_reset_ticks_previous = mem->pad.index_reset_ticks;
mem->pad.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
mem->touch.index = next_touch_index;
next_touch_index = (next_touch_index + 1) % mem->touch.entries.size();
// Get the current touch entry
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TouchDataEntry& touch_entry = mem->touch.entries[mem->touch.index];
bool pressed = false;
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std::tie(touch_entry.x, touch_entry.y, pressed) = VideoCore::g_emu_window->GetTouchState();
touch_entry.valid.Assign(pressed ? 1 : 0);
// TODO(bunnei): We're not doing anything with offset 0xA8 + 0x18 of HID SharedMemory, which
// supposedly is "Touch-screen entry, which contains the raw coordinate data prior to being
// converted to pixel coordinates." (http://3dbrew.org/wiki/HID_Shared_Memory#Offset_0xA8).
// If we just updated index 0, provide a new timestamp
if (mem->touch.index == 0) {
mem->touch.index_reset_ticks_previous = mem->touch.index_reset_ticks;
mem->touch.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
// Signal both handles when there's an update to Pad or touch
event_pad_or_touch_1->Signal();
event_pad_or_touch_2->Signal();
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// Update accelerometer
if (enable_accelerometer_count > 0) {
mem->accelerometer.index = next_accelerometer_index;
next_accelerometer_index =
(next_accelerometer_index + 1) % mem->accelerometer.entries.size();
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AccelerometerDataEntry& accelerometer_entry =
mem->accelerometer.entries[mem->accelerometer.index];
std::tie(accelerometer_entry.x, accelerometer_entry.y, accelerometer_entry.z) =
VideoCore::g_emu_window->GetAccelerometerState();
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// Make up "raw" entry
// TODO(wwylele):
// From hardware testing, the raw_entry values are approximately,
// but not exactly, as twice as corresponding entries (or with a minus sign).
// It may caused by system calibration to the accelerometer.
// Figure out how it works, or, if no game reads raw_entry,
// the following three lines can be removed and leave raw_entry unimplemented.
mem->accelerometer.raw_entry.x = -2 * accelerometer_entry.x;
mem->accelerometer.raw_entry.z = 2 * accelerometer_entry.y;
mem->accelerometer.raw_entry.y = -2 * accelerometer_entry.z;
// If we just updated index 0, provide a new timestamp
if (mem->accelerometer.index == 0) {
mem->accelerometer.index_reset_ticks_previous = mem->accelerometer.index_reset_ticks;
mem->accelerometer.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
event_accelerometer->Signal();
}
// Update gyroscope
if (enable_gyroscope_count > 0) {
mem->gyroscope.index = next_gyroscope_index;
next_gyroscope_index = (next_gyroscope_index + 1) % mem->gyroscope.entries.size();
GyroscopeDataEntry& gyroscope_entry = mem->gyroscope.entries[mem->gyroscope.index];
std::tie(gyroscope_entry.x, gyroscope_entry.y, gyroscope_entry.z) =
VideoCore::g_emu_window->GetGyroscopeState();
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// Make up "raw" entry
mem->gyroscope.raw_entry.x = gyroscope_entry.x;
mem->gyroscope.raw_entry.z = -gyroscope_entry.y;
mem->gyroscope.raw_entry.y = gyroscope_entry.z;
// If we just updated index 0, provide a new timestamp
if (mem->gyroscope.index == 0) {
mem->gyroscope.index_reset_ticks_previous = mem->gyroscope.index_reset_ticks;
mem->gyroscope.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
event_gyroscope->Signal();
}
}
void GetIPCHandles(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = 0; // No error
cmd_buff[2] = 0x14000000; // IPC Command Structure translate-header
// TODO(yuriks): Return error from SendSyncRequest is this fails (part of IPC marshalling)
cmd_buff[3] = Kernel::g_handle_table.Create(Service::HID::shared_mem).MoveFrom();
cmd_buff[4] = Kernel::g_handle_table.Create(Service::HID::event_pad_or_touch_1).MoveFrom();
cmd_buff[5] = Kernel::g_handle_table.Create(Service::HID::event_pad_or_touch_2).MoveFrom();
cmd_buff[6] = Kernel::g_handle_table.Create(Service::HID::event_accelerometer).MoveFrom();
cmd_buff[7] = Kernel::g_handle_table.Create(Service::HID::event_gyroscope).MoveFrom();
cmd_buff[8] = Kernel::g_handle_table.Create(Service::HID::event_debug_pad).MoveFrom();
}
void EnableAccelerometer(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
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++enable_accelerometer_count;
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
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LOG_DEBUG(Service_HID, "called");
}
void DisableAccelerometer(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
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--enable_accelerometer_count;
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
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LOG_DEBUG(Service_HID, "called");
}
void EnableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
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++enable_gyroscope_count;
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
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LOG_DEBUG(Service_HID, "called");
}
void DisableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
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--enable_gyroscope_count;
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
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LOG_DEBUG(Service_HID, "called");
}
void GetGyroscopeLowRawToDpsCoefficient(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = RESULT_SUCCESS.raw;
f32 coef = VideoCore::g_emu_window->GetGyroscopeRawToDpsCoefficient();
memcpy(&cmd_buff[2], &coef, 4);
}
void GetGyroscopeLowCalibrateParam(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = RESULT_SUCCESS.raw;
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const s16 param_unit = 6700; // an approximate value taken from hw
GyroscopeCalibrateParam param = {
{0, param_unit, -param_unit}, {0, param_unit, -param_unit}, {0, param_unit, -param_unit},
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};
memcpy(&cmd_buff[2], &param, sizeof(param));
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LOG_WARNING(Service_HID, "(STUBBED) called");
}
void GetSoundVolume(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
const u8 volume = 0x3F; // TODO(purpasmart): Find out if this is the max value for the volume
cmd_buff[1] = RESULT_SUCCESS.raw;
cmd_buff[2] = volume;
LOG_WARNING(Service_HID, "(STUBBED) called");
}
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void Init() {
using namespace Kernel;
AddService(new HID_U_Interface);
AddService(new HID_SPVR_Interface);
using Kernel::MemoryPermission;
shared_mem =
SharedMemory::Create(nullptr, 0x1000, MemoryPermission::ReadWrite, MemoryPermission::Read,
0, Kernel::MemoryRegion::BASE, "HID:SharedMemory");
next_pad_index = 0;
next_touch_index = 0;
// Create event handles
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event_pad_or_touch_1 = Event::Create(ResetType::OneShot, "HID:EventPadOrTouch1");
event_pad_or_touch_2 = Event::Create(ResetType::OneShot, "HID:EventPadOrTouch2");
event_accelerometer = Event::Create(ResetType::OneShot, "HID:EventAccelerometer");
event_gyroscope = Event::Create(ResetType::OneShot, "HID:EventGyroscope");
event_debug_pad = Event::Create(ResetType::OneShot, "HID:EventDebugPad");
}
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void Shutdown() {
shared_mem = nullptr;
event_pad_or_touch_1 = nullptr;
event_pad_or_touch_2 = nullptr;
event_accelerometer = nullptr;
event_gyroscope = nullptr;
event_debug_pad = nullptr;
}
} // namespace HID
} // namespace Service