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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/logging/log.h"
#include "core/hle/service/service.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/core_timing.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/hle.h"
#include "video_core/video_core.h"
namespace Service {
namespace HID {
static const int MAX_CIRCLEPAD_POS = 0x9C; ///< Max value for a circle pad position
// 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;
// TODO(peachum):
// Add a method for setting analog input from joystick device for the circle Pad.
//
// This method should:
// * Be called after both PadButton<Press, Release>().
// * Be called before PadUpdateComplete()
// * Set current PadEntry.circle_pad_<axis> using analog data
// * Set PadData.raw_circle_pad_data
// * Set PadData.current_state.circle_right = 1 if current PadEntry.circle_pad_x >= 41
// * Set PadData.current_state.circle_up = 1 if current PadEntry.circle_pad_y >= 41
// * Set PadData.current_state.circle_left = 1 if current PadEntry.circle_pad_x <= -41
// * Set PadData.current_state.circle_right = 1 if current PadEntry.circle_pad_y <= -41
void Update() {
SharedMem* mem = reinterpret_cast<SharedMem*>(shared_mem->GetPointer());
const PadState state = VideoCore::g_emu_window->GetPadState();
if (mem == nullptr) {
LOG_DEBUG(Service_HID, "Cannot update HID prior to mapping shared memory!");
return;
}
mem->pad.current_state.hex = state.hex;
mem->pad.index = next_pad_index;
++next_touch_index %= 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
PadDataEntry* pad_entry = &mem->pad.entries[mem->pad.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;;
// Set circle Pad
pad_entry->circle_pad_x = state.circle_left ? -MAX_CIRCLEPAD_POS :
state.circle_right ? MAX_CIRCLEPAD_POS : 0x0;
pad_entry->circle_pad_y = state.circle_down ? -MAX_CIRCLEPAD_POS :
state.circle_up ? MAX_CIRCLEPAD_POS : 0x0;
// 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 %= mem->touch.entries.size();
// Get the current touch entry
TouchDataEntry* touch_entry = &mem->touch.entries[mem->touch.index];
bool pressed = false;
std::tie(touch_entry->x, touch_entry->y, pressed) = VideoCore::g_emu_window->GetTouchState();
touch_entry->valid = 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();
}
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();
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
}
void DisableAccelerometer(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
}
void EnableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
}
void DisableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
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");
}
void Init() {
using namespace Kernel;
AddService(new HID_U_Interface);
AddService(new HID_SPVR_Interface);
using Kernel::MemoryPermission;
shared_mem = SharedMemory::Create(0x1000, MemoryPermission::ReadWrite,
MemoryPermission::Read, "HID:SharedMem");
next_pad_index = 0;
next_touch_index = 0;
// Create event handles
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");
}
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
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