yuzu/src/core/hle/service/hid_user.cpp
Yuri Kunde Schlesner e321decf98 Remove SyncRequest from K::Object and create a new K::Session type
This is a first step at fixing the conceptual insanity that is our
handling of service and IPC calls. For now, interfaces still directly
derived from Session because we don't have the infrastructure to do it
properly. (That is, Processes and scheduling them.)
2014-12-15 18:26:17 -02:00

203 lines
6.7 KiB
C++

// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/log.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "hid_user.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace HID_User
namespace HID_User {
// Handle to shared memory region designated to HID_User service
static Handle shared_mem = 0;
// Event handles
static Handle event_pad_or_touch_1 = 0;
static Handle event_pad_or_touch_2 = 0;
static Handle event_accelerometer = 0;
static Handle event_gyroscope = 0;
static Handle event_debug_pad = 0;
// Next Pad state update information
static PadState next_state = {{0}};
static u32 next_index = 0;
static s16 next_circle_x = 0;
static s16 next_circle_y = 0;
/**
* Gets a pointer to the PadData structure inside HID shared memory
*/
static inline PadData* GetPadData() {
return reinterpret_cast<PadData*>(Kernel::GetSharedMemoryPointer(shared_mem, 0).ValueOr(nullptr));
}
/**
* Circle Pad from keys.
*
* This is implemented as "pushed all the way to an edge (max) or centered (0)".
*
* Indicate the circle pad is pushed completely to the edge in 1 of 8 directions.
*/
static void UpdateNextCirclePadState() {
static const s16 max_value = 0x9C;
next_circle_x = next_state.circle_left ? -max_value : 0x0;
next_circle_x += next_state.circle_right ? max_value : 0x0;
next_circle_y = next_state.circle_down ? -max_value : 0x0;
next_circle_y += next_state.circle_up ? max_value : 0x0;
}
/**
* Sets a Pad state (button or button combo) as pressed
*/
void PadButtonPress(const PadState& pad_state) {
next_state.hex |= pad_state.hex;
UpdateNextCirclePadState();
}
/**
* Sets a Pad state (button or button combo) as released
*/
void PadButtonRelease(const PadState& pad_state) {
next_state.hex &= ~pad_state.hex;
UpdateNextCirclePadState();
}
/**
* Called after all Pad changes to be included in this update have been made,
* including both Pad key changes and analog circle Pad changes.
*/
void PadUpdateComplete() {
PadData* pad_data = GetPadData();
if (pad_data == nullptr) {
return;
}
// Update PadData struct
pad_data->current_state.hex = next_state.hex;
pad_data->index = next_index;
next_index = (next_index + 1) % pad_data->entries.size();
// Get the previous Pad state
u32 last_entry_index = (pad_data->index - 1) % pad_data->entries.size();
PadState old_state = pad_data->entries[last_entry_index].current_state;
// Compute bitmask with 1s for bits different from the old state
PadState changed;
changed.hex = (next_state.hex ^ old_state.hex);
// Compute what was added
PadState additions;
additions.hex = changed.hex & next_state.hex;
// Compute what was removed
PadState removals;
removals.hex = changed.hex & old_state.hex;
// Get the current Pad entry
PadDataEntry* current_pad_entry = &pad_data->entries[pad_data->index];
// Update entry properties
current_pad_entry->current_state.hex = next_state.hex;
current_pad_entry->delta_additions.hex = additions.hex;
current_pad_entry->delta_removals.hex = removals.hex;
// Set circle Pad
current_pad_entry->circle_pad_x = next_circle_x;
current_pad_entry->circle_pad_y = next_circle_y;
// If we just updated index 0, provide a new timestamp
if (pad_data->index == 0) {
pad_data->index_reset_ticks_previous = pad_data->index_reset_ticks;
pad_data->index_reset_ticks = (s64)Core::g_app_core->GetTicks();
}
// Signal both handles when there's an update to Pad or touch
Kernel::SignalEvent(event_pad_or_touch_1);
Kernel::SignalEvent(event_pad_or_touch_2);
}
// 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
/**
* HID_User::GetIPCHandles service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Unused
* 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
*/
static void GetIPCHandles(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = 0; // No error
cmd_buff[3] = shared_mem;
cmd_buff[4] = event_pad_or_touch_1;
cmd_buff[5] = event_pad_or_touch_2;
cmd_buff[6] = event_accelerometer;
cmd_buff[7] = event_gyroscope;
cmd_buff[8] = event_debug_pad;
LOG_TRACE(Service_HID, "called");
}
const Interface::FunctionInfo FunctionTable[] = {
{0x000A0000, GetIPCHandles, "GetIPCHandles"},
{0x000B0000, nullptr, "StartAnalogStickCalibration"},
{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
{0x00110000, nullptr, "EnableAccelerometer"},
{0x00120000, nullptr, "DisableAccelerometer"},
{0x00130000, nullptr, "EnableGyroscopeLow"},
{0x00140000, nullptr, "DisableGyroscopeLow"},
{0x00150000, nullptr, "GetGyroscopeLowRawToDpsCoefficient"},
{0x00160000, nullptr, "GetGyroscopeLowCalibrateParam"},
{0x00170000, nullptr, "GetSoundVolume"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
shared_mem = Kernel::CreateSharedMemory("HID_User:SharedMem"); // Create shared memory object
// Create event handles
event_pad_or_touch_1 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventPadOrTouch1");
event_pad_or_touch_2 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventPadOrTouch2");
event_accelerometer = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventAccelerometer");
event_gyroscope = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventGyroscope");
event_debug_pad = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventDebugPad");
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
}
Interface::~Interface() {
}
} // namespace