2014-04-16 17:58:36 -07:00
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "common/log.h"
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#include "core/hle/hle.h"
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2014-08-07 17:27:56 -07:00
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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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2014-04-16 17:58:36 -07:00
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#include "core/hle/service/hid.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Namespace HID_User
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namespace HID_User {
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2014-08-07 17:27:56 -07:00
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Handle g_shared_mem = 0; ///< Handle to shared memory region designated to HID_User service
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2014-09-03 18:12:58 -07:00
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// Event handles
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Handle g_event_pad_or_touch_1 = 0;
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Handle g_event_pad_or_touch_2 = 0;
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Handle g_event_accelerometer = 0;
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Handle g_event_gyroscope = 0;
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Handle g_event_debug_pad = 0;
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// Next PAD state update information
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PADState g_next_state = {{0}};
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u32 g_next_index = 0;
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s16 g_next_circle_x = 0;
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s16 g_next_circle_y = 0;
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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 PADData* GetPADData() {
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if (0 == g_shared_mem)
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return nullptr;
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return reinterpret_cast<PADData*>(Kernel::GetSharedMemoryPointer(g_shared_mem, 0));
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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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void UpdateNextCirclePADState() {
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static const s16 max_value = 0x9C;
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g_next_circle_x = g_next_state.circle_left ? -max_value : 0x0;
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g_next_circle_x += g_next_state.circle_right ? max_value : 0x0;
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g_next_circle_y = g_next_state.circle_down ? -max_value : 0x0;
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g_next_circle_y += g_next_state.circle_up ? max_value : 0x0;
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}
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/** Sets a PAD state (button or button combo) as pressed
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*/
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void PADButtonPress(PADState pad_state) {
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g_next_state.hex |= pad_state.hex;
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UpdateNextCirclePADState();
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}
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/** Sets a PAD state (button or button combo) as released
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*/
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void PADButtonRelease(PADState pad_state) {
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g_next_state.hex &= ~pad_state.hex;
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UpdateNextCirclePADState();
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}
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/** Called after all PAD changes to be included in this update have been made,
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* including both PAD key changes and analog circle PAD changes.
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*/
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void PADUpdateComplete() {
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PADData* pad_data = GetPADData();
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// Update PADData struct
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pad_data->current_state.hex = g_next_state.hex;
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pad_data->index = g_next_index;
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g_next_index = (g_next_index + 1) % pad_data->entries.size();
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// Get the previous PAD state
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u32 last_entry_index = (pad_data->index - 1) % pad_data->entries.size();
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PADState old_state = pad_data->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 = (g_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 & g_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 = &pad_data->entries[pad_data->index];
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// Update entry properties
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current_pad_entry->current_state.hex = g_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 = g_next_circle_x;
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current_pad_entry->circle_pad_y = g_next_circle_y;
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// If we just updated index 0, provide a new timestamp
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if (pad_data->index == 0) {
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pad_data->index_reset_ticks_previous = pad_data->index_reset_ticks;
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pad_data->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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Kernel::SignalEvent(g_event_pad_or_touch_1);
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Kernel::SignalEvent(g_event_pad_or_touch_2);
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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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2014-08-07 17:27:56 -07:00
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/**
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* HID_User::GetIPCHandles service function
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* Inputs:
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* None
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unused
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* 3 : Handle to HID_User shared memory
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* 4 : Event signaled by HID_User
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* 5 : Event signaled by HID_User
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* 6 : Event signaled by HID_User
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* 7 : Gyroscope event
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* 8 : Event signaled by HID_User
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*/
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void GetIPCHandles(Service::Interface* self) {
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u32* cmd_buff = Service::GetCommandBuffer();
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cmd_buff[1] = 0; // No error
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cmd_buff[3] = g_shared_mem;
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2014-09-03 18:12:58 -07:00
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cmd_buff[4] = g_event_pad_or_touch_1;
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cmd_buff[5] = g_event_pad_or_touch_2;
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cmd_buff[6] = g_event_accelerometer;
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cmd_buff[7] = g_event_gyroscope;
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cmd_buff[8] = g_event_debug_pad;
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2014-08-07 17:27:56 -07:00
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DEBUG_LOG(KERNEL, "called");
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}
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2014-04-24 19:16:54 -07:00
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const Interface::FunctionInfo FunctionTable[] = {
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{0x000A0000, GetIPCHandles, "GetIPCHandles"},
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2014-08-07 17:33:59 -07:00
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{0x000B0000, nullptr, "StartAnalogStickCalibration"},
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{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
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2014-08-07 17:27:56 -07:00
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{0x00110000, nullptr, "EnableAccelerometer"},
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2014-08-07 17:33:59 -07:00
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{0x00120000, nullptr, "DisableAccelerometer"},
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2014-08-07 17:27:56 -07:00
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{0x00130000, nullptr, "EnableGyroscopeLow"},
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2014-08-07 17:33:59 -07:00
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{0x00140000, nullptr, "DisableGyroscopeLow"},
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2014-08-07 17:27:56 -07:00
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{0x00150000, nullptr, "GetGyroscopeLowRawToDpsCoefficient"},
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{0x00160000, nullptr, "GetGyroscopeLowCalibrateParam"},
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2014-08-07 17:33:59 -07:00
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{0x00170000, nullptr, "GetSoundVolume"},
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2014-04-16 17:58:36 -07:00
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};
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2014-09-02 22:24:03 -07:00
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2014-04-16 17:58:36 -07:00
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Interface class
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Interface::Interface() {
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2014-08-07 17:27:56 -07:00
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g_shared_mem = Kernel::CreateSharedMemory("HID_User:SharedMem"); // Create shared memory object
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2014-09-03 18:12:58 -07:00
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// Create event handles
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g_event_pad_or_touch_1 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventPADOrTouch1");
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g_event_pad_or_touch_2 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventPADOrTouch2");
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g_event_accelerometer = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventAccelerometer");
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g_event_gyroscope = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventGyroscope");
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g_event_debug_pad = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventDebugPAD");
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2014-04-16 17:58:36 -07:00
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Register(FunctionTable, ARRAY_SIZE(FunctionTable));
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}
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Interface::~Interface() {
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}
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} // namespace
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