diff options
Diffstat (limited to 'src/core/hle')
-rw-r--r-- | src/core/hle/service/hid.cpp | 145 | ||||
-rw-r--r-- | src/core/hle/service/hid.h | 90 |
2 files changed, 225 insertions, 10 deletions
diff --git a/src/core/hle/service/hid.cpp b/src/core/hle/service/hid.cpp index 4e470795f..b6ec1b8ff 100644 --- a/src/core/hle/service/hid.cpp +++ b/src/core/hle/service/hid.cpp @@ -14,7 +14,128 @@ namespace HID_User { -Handle g_shared_mem = 0; ///< Handle to shared memory region designated to HID_User service +// 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() { + if (0 == shared_mem) + return nullptr; + + return reinterpret_cast<PadData*>(Kernel::GetSharedMemoryPointer(shared_mem, 0)); +} + +/** + * 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. + */ +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(PadState pad_state) { + next_state.hex |= pad_state.hex; + UpdateNextCirclePadState(); +} + +/** + * Sets a Pad state (button or button combo) as released + */ +void PadButtonRelease(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(); + + // 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 @@ -34,12 +155,12 @@ void GetIPCHandles(Service::Interface* self) { u32* cmd_buff = Service::GetCommandBuffer(); cmd_buff[1] = 0; // No error - cmd_buff[3] = g_shared_mem; - cmd_buff[4] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventA"); - cmd_buff[5] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventB"); - cmd_buff[6] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventC"); - cmd_buff[7] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventGyroscope"); - cmd_buff[8] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID_User:EventD"); + 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; DEBUG_LOG(KERNEL, "called"); } @@ -57,11 +178,19 @@ const Interface::FunctionInfo FunctionTable[] = { {0x00170000, nullptr, "GetSoundVolume"}, }; + //////////////////////////////////////////////////////////////////////////////////////////////////// // Interface class Interface::Interface() { - g_shared_mem = Kernel::CreateSharedMemory("HID_User:SharedMem"); // Create shared memory object + 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)); } diff --git a/src/core/hle/service/hid.h b/src/core/hle/service/hid.h index b17fcfa86..a077e25cd 100644 --- a/src/core/hle/service/hid.h +++ b/src/core/hle/service/hid.h @@ -5,15 +5,101 @@ #pragma once #include "core/hle/service/service.h" +#include "common/bit_field.h" //////////////////////////////////////////////////////////////////////////////////////////////////// // Namespace HID_User -// This service is used for interfacing to physical user controls... perhaps "Human Interface -// Devices"? Uses include game pad controls, accelerometers, gyroscopes, etc. +// This service is used for interfacing to physical user controls. +// Uses include game pad controls, touchscreen, accelerometers, gyroscopes, and debug pad. namespace HID_User { +/** + * Structure of a Pad controller state. + */ +struct PadState { + union { + u32 hex; + + BitField<0, 1, u32> a; + BitField<1, 1, u32> b; + BitField<2, 1, u32> select; + BitField<3, 1, u32> start; + BitField<4, 1, u32> right; + BitField<5, 1, u32> left; + BitField<6, 1, u32> up; + BitField<7, 1, u32> down; + BitField<8, 1, u32> r; + BitField<9, 1, u32> l; + BitField<10, 1, u32> x; + BitField<11, 1, u32> y; + + BitField<28, 1, u32> circle_right; + BitField<29, 1, u32> circle_left; + BitField<30, 1, u32> circle_up; + BitField<31, 1, u32> circle_down; + }; +}; + +/** + * Structure of a single entry in the PadData's Pad state history array. + */ +struct PadDataEntry { + PadState current_state; + PadState delta_additions; + PadState delta_removals; + + s16 circle_pad_x; + s16 circle_pad_y; +}; + +/** + * Structure of all data related to the 3DS Pad. + */ +struct PadData { + s64 index_reset_ticks; + s64 index_reset_ticks_previous; + u32 index; // the index of the last updated Pad state history element + + u32 pad1; + u32 pad2; + + PadState current_state; // same as entries[index].current_state + u32 raw_circle_pad_data; + + u32 pad3; + + std::array<PadDataEntry, 8> entries; // Pad state history +}; + +// Pre-defined PadStates for single button presses +const PadState PAD_NONE = {{0}}; +const PadState PAD_A = {{1u << 0}}; +const PadState PAD_B = {{1u << 1}}; +const PadState PAD_SELECT = {{1u << 2}}; +const PadState PAD_START = {{1u << 3}}; +const PadState PAD_RIGHT = {{1u << 4}}; +const PadState PAD_LEFT = {{1u << 5}}; +const PadState PAD_UP = {{1u << 6}}; +const PadState PAD_DOWN = {{1u << 7}}; +const PadState PAD_R = {{1u << 8}}; +const PadState PAD_L = {{1u << 9}}; +const PadState PAD_X = {{1u << 10}}; +const PadState PAD_Y = {{1u << 11}}; +const PadState PAD_CIRCLE_RIGHT = {{1u << 28}}; +const PadState PAD_CIRCLE_LEFT = {{1u << 29}}; +const PadState PAD_CIRCLE_UP = {{1u << 30}}; +const PadState PAD_CIRCLE_DOWN = {{1u << 31}}; + +// Methods for updating the HID module's state +void PadButtonPress(PadState pad_state); +void PadButtonRelease(PadState pad_state); +void PadUpdateComplete(); + +/** + * HID service interface. + */ class Interface : public Service::Interface { public: |