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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/shared_ptr.hpp>
#include "common/archives.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.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/ir/ir_rst.h"
#include "core/movie.h"
SERIALIZE_EXPORT_IMPL(Service::IR::IR_RST)
SERVICE_CONSTRUCT_IMPL(Service::IR::IR_RST)
namespace Service::IR {
template <class Archive>
void IR_RST::serialize(Archive& ar, const unsigned int) {
ar& boost::serialization::base_object<Kernel::SessionRequestHandler>(*this);
ar& update_event;
ar& shared_memory;
ar& next_pad_index;
ar& raw_c_stick;
ar& update_period;
// update_callback_id and input devices are set separately
ReloadInputDevices();
}
struct PadDataEntry {
PadState current_state;
PadState delta_additions;
PadState delta_removals;
s16_le c_stick_x;
s16_le c_stick_y;
};
struct SharedMem {
u64_le index_reset_ticks; ///< CPU tick count for when HID module updated entry index 0
u64_le index_reset_ticks_previous; ///< Previous `index_reset_ticks`
u32_le index;
INSERT_PADDING_WORDS(1);
std::array<PadDataEntry, 8> entries; ///< Last 8 pad entries
};
static_assert(sizeof(SharedMem) == 0x98, "SharedMem has wrong size!");
void IR_RST::LoadInputDevices() {
zl_button = Input::CreateDevice<Input::ButtonDevice>(
Settings::values.current_input_profile.buttons[Settings::NativeButton::ZL]);
zr_button = Input::CreateDevice<Input::ButtonDevice>(
Settings::values.current_input_profile.buttons[Settings::NativeButton::ZR]);
c_stick = Input::CreateDevice<Input::AnalogDevice>(
Settings::values.current_input_profile.analogs[Settings::NativeAnalog::CStick]);
}
void IR_RST::UnloadInputDevices() {
zl_button = nullptr;
zr_button = nullptr;
c_stick = nullptr;
}
void IR_RST::UpdateCallback(std::uintptr_t user_data, s64 cycles_late) {
SharedMem* mem = reinterpret_cast<SharedMem*>(shared_memory->GetPointer());
if (is_device_reload_pending.exchange(false))
LoadInputDevices();
PadState state;
state.zl.Assign(zl_button->GetStatus());
state.zr.Assign(zr_button->GetStatus());
// Get current c-stick position and update c-stick direction
float c_stick_x_f, c_stick_y_f;
std::tie(c_stick_x_f, c_stick_y_f) = c_stick->GetStatus();
constexpr int MAX_CSTICK_RADIUS = 0x9C; // Max value for a c-stick radius
s16 c_stick_x = static_cast<s16>(c_stick_x_f * MAX_CSTICK_RADIUS);
s16 c_stick_y = static_cast<s16>(c_stick_y_f * MAX_CSTICK_RADIUS);
system.Movie().HandleIrRst(state, c_stick_x, c_stick_y);
if (!raw_c_stick) {
const HID::DirectionState direction = HID::GetStickDirectionState(c_stick_x, c_stick_y);
state.c_stick_up.Assign(direction.up);
state.c_stick_down.Assign(direction.down);
state.c_stick_left.Assign(direction.left);
state.c_stick_right.Assign(direction.right);
}
// TODO (wwylele): implement raw C-stick data for raw_c_stick = true
const u32 last_entry_index = mem->index;
mem->index = next_pad_index;
next_pad_index = (next_pad_index + 1) % mem->entries.size();
// Get the previous Pad state
PadState old_state{mem->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
PadDataEntry& pad_entry = mem->entries[mem->index];
// Update entry properties
pad_entry.current_state.hex = state.hex;
pad_entry.delta_additions.hex = changed.hex & state.hex;
pad_entry.delta_removals.hex = changed.hex & old_state.hex;
pad_entry.c_stick_x = c_stick_x;
pad_entry.c_stick_y = c_stick_y;
// If we just updated index 0, provide a new timestamp
if (mem->index == 0) {
mem->index_reset_ticks_previous = mem->index_reset_ticks;
mem->index_reset_ticks = system.CoreTiming().GetTicks();
}
update_event->Signal();
// Reschedule recurrent event
system.CoreTiming().ScheduleEvent(msToCycles(update_period) - cycles_late, update_callback_id);
}
void IR_RST::GetHandles(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 3);
rb.Push(ResultSuccess);
rb.PushMoveObjects(shared_memory, update_event);
}
void IR_RST::Initialize(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx);
update_period = static_cast<int>(rp.Pop<u32>());
raw_c_stick = rp.Pop<bool>();
if (raw_c_stick)
LOG_ERROR(Service_IR, "raw C-stick data is not implemented!");
next_pad_index = 0;
is_device_reload_pending.store(true);
system.CoreTiming().ScheduleEvent(msToCycles(update_period), update_callback_id);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(ResultSuccess);
LOG_DEBUG(Service_IR, "called. update_period={}, raw_c_stick={}", update_period, raw_c_stick);
}
void IR_RST::Shutdown(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx);
system.CoreTiming().UnscheduleEvent(update_callback_id, 0);
UnloadInputDevices();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(ResultSuccess);
LOG_DEBUG(Service_IR, "called");
}
IR_RST::IR_RST(Core::System& system) : ServiceFramework("ir:rst", 2), system(system) {
using namespace Kernel;
// Note: these two kernel objects are even available before Initialize service function is
// called.
shared_memory =
system.Kernel()
.CreateSharedMemory(nullptr, 0x1000, MemoryPermission::ReadWrite,
MemoryPermission::Read, 0, MemoryRegion::BASE, "IRRST:SharedMemory")
.Unwrap();
update_event = system.Kernel().CreateEvent(ResetType::OneShot, "IRRST:UpdateEvent");
update_callback_id = system.CoreTiming().RegisterEvent(
"IRRST:UpdateCallBack", [this](std::uintptr_t user_data, s64 cycles_late) {
UpdateCallback(user_data, cycles_late);
});
static const FunctionInfo functions[] = {
// clang-format off
{0x0001, &IR_RST::GetHandles, "GetHandles"},
{0x0002, &IR_RST::Initialize, "Initialize"},
{0x0003, &IR_RST::Shutdown, "Shutdown"},
{0x0009, nullptr, "WriteToTwoFields"},
// clang-format on
};
RegisterHandlers(functions);
}
IR_RST::~IR_RST() = default;
void IR_RST::ReloadInputDevices() {
is_device_reload_pending.store(true);
}
} // namespace Service::IR
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