mirror of
https://github.com/citra-emu/citra.git
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211 lines
7.4 KiB
C++
211 lines
7.4 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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#include "core/hle/service/service.h"
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#include "core/hle/service/hid/hid.h"
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#include "core/hle/service/hid/hid_spvr.h"
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#include "core/hle/service/hid/hid_user.h"
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#include "core/arm/arm_interface.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/shared_memory.h"
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#include "core/hle/hle.h"
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namespace Service {
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namespace HID {
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Kernel::SharedPtr<Kernel::SharedMemory> g_shared_mem = nullptr;
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Kernel::SharedPtr<Kernel::Event> g_event_pad_or_touch_1;
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Kernel::SharedPtr<Kernel::Event> g_event_pad_or_touch_2;
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Kernel::SharedPtr<Kernel::Event> g_event_accelerometer;
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Kernel::SharedPtr<Kernel::Event> g_event_gyroscope;
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Kernel::SharedPtr<Kernel::Event> g_event_debug_pad;
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// Next Pad state update information
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static PadState next_state = {{0}};
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static u32 next_pad_index = 0;
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static s16 next_pad_circle_x = 0;
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static s16 next_pad_circle_y = 0;
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static u32 next_touch_index = 0;
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static u16 next_touch_x = 0;
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static u16 next_touch_y = 0;
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/**
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* Gets a pointer to the PadData structure inside HID shared memory
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*/
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static inline SharedMem* GetSharedMem() {
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if (g_shared_mem == nullptr)
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return nullptr;
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return reinterpret_cast<SharedMem*>(g_shared_mem->GetPointer().ValueOr(nullptr));
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}
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// TODO(peachum):
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// Add a method for setting analog input from joystick device for the circle Pad.
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//
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// This method should:
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// * Be called after both PadButton<Press, Release>().
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// * Be called before PadUpdateComplete()
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// * Set current PadEntry.circle_pad_<axis> using analog data
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// * Set PadData.raw_circle_pad_data
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// * Set PadData.current_state.circle_right = 1 if current PadEntry.circle_pad_x >= 41
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// * Set PadData.current_state.circle_up = 1 if current PadEntry.circle_pad_y >= 41
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// * Set PadData.current_state.circle_left = 1 if current PadEntry.circle_pad_x <= -41
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// * Set PadData.current_state.circle_right = 1 if current PadEntry.circle_pad_y <= -41
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/**
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* Circle Pad from keys.
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*
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* This is implemented as "pushed all the way to an edge (max) or centered (0)".
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*
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* Indicate the circle pad is pushed completely to the edge in 1 of 8 directions.
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*/
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static void UpdateNextCirclePadState() {
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static const s16 max_value = 0x9C;
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next_pad_circle_x = next_state.circle_left ? -max_value : 0x0;
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next_pad_circle_x += next_state.circle_right ? max_value : 0x0;
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next_pad_circle_y = next_state.circle_down ? -max_value : 0x0;
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next_pad_circle_y += next_state.circle_up ? max_value : 0x0;
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}
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void PadButtonPress(const PadState& pad_state) {
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next_state.hex |= pad_state.hex;
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UpdateNextCirclePadState();
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}
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void PadButtonRelease(const PadState& pad_state) {
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next_state.hex &= ~pad_state.hex;
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UpdateNextCirclePadState();
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}
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void PadUpdateComplete() {
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SharedMem* shared_mem = GetSharedMem();
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if (shared_mem == nullptr)
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return;
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shared_mem->pad.current_state.hex = next_state.hex;
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shared_mem->pad.index = next_pad_index;
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next_pad_index = (next_pad_index + 1) % shared_mem->pad.entries.size();
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// Get the previous Pad state
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u32 last_entry_index = (shared_mem->pad.index - 1) % shared_mem->pad.entries.size();
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PadState old_state = shared_mem->pad.entries[last_entry_index].current_state;
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// Compute bitmask with 1s for bits different from the old state
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PadState changed;
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changed.hex = (next_state.hex ^ old_state.hex);
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// Compute what was added
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PadState additions;
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additions.hex = changed.hex & next_state.hex;
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// Compute what was removed
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PadState removals;
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removals.hex = changed.hex & old_state.hex;
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// Get the current Pad entry
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PadDataEntry* current_pad_entry = &shared_mem->pad.entries[shared_mem->pad.index];
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// Update entry properties
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current_pad_entry->current_state.hex = next_state.hex;
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current_pad_entry->delta_additions.hex = additions.hex;
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current_pad_entry->delta_removals.hex = removals.hex;
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// Set circle Pad
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current_pad_entry->circle_pad_x = next_pad_circle_x;
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current_pad_entry->circle_pad_y = next_pad_circle_y;
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// If we just updated index 0, provide a new timestamp
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if (shared_mem->pad.index == 0) {
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shared_mem->pad.index_reset_ticks_previous = shared_mem->pad.index_reset_ticks;
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shared_mem->pad.index_reset_ticks = (s64)Core::g_app_core->GetTicks();
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}
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// Signal both handles when there's an update to Pad or touch
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g_event_pad_or_touch_1->Signal();
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g_event_pad_or_touch_2->Signal();
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}
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void TouchPress(u16 x, u16 y) {
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next_touch_x = x;
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next_touch_y = y;
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}
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void TouchRelease() {
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next_touch_x = 0;
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next_touch_y = 0;
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}
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void TouchUpdateComplete() {
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SharedMem* shared_mem = GetSharedMem();
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if (shared_mem == nullptr)
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return;
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shared_mem->touch.index = next_touch_index;
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next_touch_index = (next_touch_index + 1) % shared_mem->touch.entries.size();
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// Get the current touch entry
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TouchDataEntry* current_touch_entry = &shared_mem->touch.entries[shared_mem->touch.index];
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// Set touchpad position
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current_touch_entry->x = next_touch_x;
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current_touch_entry->y = next_touch_y;
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// TODO(bunnei): Verify this behavior on real hardware
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current_touch_entry->data_valid = (next_touch_x || next_touch_y) ? 1 : 0;
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// TODO(bunnei): We're not doing anything with offset 0xA8 + 0x18 of HID SharedMemory, which
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// supposedly is "Touch-screen entry, which contains the raw coordinate data prior to being
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// converted to pixel coordinates." (http://3dbrew.org/wiki/HID_Shared_Memory#Offset_0xA8).
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// If we just updated index 0, provide a new timestamp
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if (shared_mem->touch.index == 0) {
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shared_mem->touch.index_reset_ticks_previous = shared_mem->touch.index_reset_ticks;
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shared_mem->touch.index_reset_ticks = (s64)Core::g_app_core->GetTicks();
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}
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// Signal both handles when there's an update to Pad or touch
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g_event_pad_or_touch_1->Signal();
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g_event_pad_or_touch_2->Signal();
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}
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void GetIPCHandles(Service::Interface* self) {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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cmd_buff[1] = 0; // No error
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// TODO(yuriks): Return error from SendSyncRequest is this fails (part of IPC marshalling)
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cmd_buff[3] = Kernel::g_handle_table.Create(Service::HID::g_shared_mem).MoveFrom();
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cmd_buff[4] = Kernel::g_handle_table.Create(Service::HID::g_event_pad_or_touch_1).MoveFrom();
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cmd_buff[5] = Kernel::g_handle_table.Create(Service::HID::g_event_pad_or_touch_2).MoveFrom();
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cmd_buff[6] = Kernel::g_handle_table.Create(Service::HID::g_event_accelerometer).MoveFrom();
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cmd_buff[7] = Kernel::g_handle_table.Create(Service::HID::g_event_gyroscope).MoveFrom();
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cmd_buff[8] = Kernel::g_handle_table.Create(Service::HID::g_event_debug_pad).MoveFrom();
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}
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void HIDInit() {
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using namespace Kernel;
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AddService(new HID_U_Interface);
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AddService(new HID_SPVR_Interface);
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g_shared_mem = SharedMemory::Create("HID:SharedMem");
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// Create event handles
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g_event_pad_or_touch_1 = Event::Create(RESETTYPE_ONESHOT, "HID:EventPadOrTouch1");
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g_event_pad_or_touch_2 = Event::Create(RESETTYPE_ONESHOT, "HID:EventPadOrTouch2");
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g_event_accelerometer = Event::Create(RESETTYPE_ONESHOT, "HID:EventAccelerometer");
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g_event_gyroscope = Event::Create(RESETTYPE_ONESHOT, "HID:EventGyroscope");
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g_event_debug_pad = Event::Create(RESETTYPE_ONESHOT, "HID:EventDebugPad");
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}
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void HIDShutdown() {
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}
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}
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}
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