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author | archshift <admin@archshift.com> | 2015-01-19 00:07:48 +0100 |
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committer | archshift <admin@archshift.com> | 2015-01-21 22:31:10 +0100 |
commit | 1f109c6b497565afe99b9c9cfbb61de5a87e7374 (patch) | |
tree | 9eaedc4e6d764f3436a45ba05e79f16fec1ff299 /src/core/hle/service/hid/hid.cpp | |
parent | Merge pull request #429 from Kingcom/titlebar (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/service/hid/hid.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp new file mode 100644 index 000000000..5abcb2596 --- /dev/null +++ b/src/core/hle/service/hid/hid.cpp @@ -0,0 +1,138 @@ +// Copyright 2015 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "core/hle/service/hid/hid.h" + +#include "core/arm/arm_interface.h" +#include "core/hle/kernel/event.h" +#include "core/hle/kernel/shared_memory.h" +#include "core/hle/hle.h" + +namespace Service { +namespace HID { + +Handle g_shared_mem = 0; + +Handle g_event_pad_or_touch_1 = 0; +Handle g_event_pad_or_touch_2 = 0; +Handle g_event_accelerometer = 0; +Handle g_event_gyroscope = 0; +Handle g_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(g_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(g_event_pad_or_touch_1); + Kernel::SignalEvent(g_event_pad_or_touch_2); +} + +void HIDInit() { + g_shared_mem = Kernel::CreateSharedMemory("HID:SharedMem"); // Create shared memory object + + // Create event handles + g_event_pad_or_touch_1 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID:EventPadOrTouch1"); + g_event_pad_or_touch_2 = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID:EventPadOrTouch2"); + g_event_accelerometer = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID:EventAccelerometer"); + g_event_gyroscope = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID:EventGyroscope"); + g_event_debug_pad = Kernel::CreateEvent(RESETTYPE_ONESHOT, "HID:EventDebugPad"); +} + +void HIDShutdown() { + +} + +} +} |