diff options
Diffstat (limited to 'src/core/hle/service/hid.cpp')
| -rw-r--r-- | src/core/hle/service/hid.cpp | 145 |
1 files changed, 137 insertions, 8 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)); } |