HID: Complete refactor of pad/touch input to fix threading issues.

src/core/hle/service/hid/hid.cpp

@@ -12,6 +12,8 @@
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/hle.h"
 
+#include "video_core/video_core.h"
+
 namespace Service {
 namespace HID {
 
@@ -23,15 +25,8 @@ Kernel::SharedPtr<Kernel::Event> g_event_accelerometer;
 Kernel::SharedPtr<Kernel::Event> g_event_gyroscope;
 Kernel::SharedPtr<Kernel::Event> g_event_debug_pad;
 
-// Next Pad state update information
-static PadState next_state = {{0}};
 static u32 next_pad_index = 0;
-static s16 next_pad_circle_x = 0;
-static s16 next_pad_circle_y = 0;
-
 static u32 next_touch_index = 0;
-static u16 next_touch_x = 0;
-static u16 next_touch_y = 0;
 
 /**
  * Gets a pointer to the PadData structure inside HID shared memory
@@ -55,38 +50,15 @@ static inline SharedMem* GetSharedMem() {
 //     * 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
 
-/**
- * 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_pad_circle_x = next_state.circle_left ? -max_value : 0x0;
-    next_pad_circle_x += next_state.circle_right ? max_value : 0x0;
-    next_pad_circle_y = next_state.circle_down ? -max_value : 0x0;
-    next_pad_circle_y += next_state.circle_up ? max_value : 0x0;
-}
-
-void PadButtonPress(const PadState& pad_state) {
-    next_state.hex |= pad_state.hex;
-    UpdateNextCirclePadState();
-}
-
-void PadButtonRelease(const PadState& pad_state) {
-    next_state.hex &= ~pad_state.hex;
-    UpdateNextCirclePadState();
-}
-
-void PadUpdateComplete() {
+void HIDUpdate() {
     SharedMem* shared_mem = GetSharedMem();
 
     if (shared_mem == nullptr)
         return;
 
-    shared_mem->pad.current_state.hex = next_state.hex;
+    const PadState& state = VideoCore::g_emu_window->GetPadState();
+
+    shared_mem->pad.current_state.hex = state.hex;
     shared_mem->pad.index = next_pad_index;
     ++next_touch_index %= shared_mem->pad.entries.size();
 
@@ -95,28 +67,19 @@ void PadUpdateComplete() {
     PadState old_state = shared_mem->pad.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;
+    PadState changed = { { (state.hex ^ old_state.hex) } };
 
     // Get the current Pad entry
-    PadDataEntry* current_pad_entry = &shared_mem->pad.entries[shared_mem->pad.index];
+    PadDataEntry* pad_entry = &shared_mem->pad.entries[shared_mem->pad.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;
+    pad_entry->current_state.hex = state.hex;
+    pad_entry->delta_additions.hex = changed.hex & state.hex;
+    pad_entry->delta_removals.hex = changed.hex & old_state.hex;;
 
     // Set circle Pad
-    current_pad_entry->circle_pad_x = next_pad_circle_x;
-    current_pad_entry->circle_pad_y = next_pad_circle_y;
+    pad_entry->circle_pad_x = state.circle_left ? -0x9C : state.circle_right ? 0x9C : 0x0;
+    pad_entry->circle_pad_y = state.circle_down ? -0x9C : state.circle_up ? 0x9C : 0x0;
 
     // If we just updated index 0, provide a new timestamp
     if (shared_mem->pad.index == 0) {
@@ -124,39 +87,15 @@ void PadUpdateComplete() {
         shared_mem->pad.index_reset_ticks = (s64)Core::g_app_core->GetTicks();
     }
 
-    // Signal both handles when there's an update to Pad or touch
-    g_event_pad_or_touch_1->Signal();
-    g_event_pad_or_touch_2->Signal();
-}
-
-void TouchPress(u16 x, u16 y) {
-    next_touch_x = x;
-    next_touch_y = y;
-}
-
-void TouchRelease() {
-    next_touch_x = 0;
-    next_touch_y = 0;
-}
-
-void TouchUpdateComplete() {
-    SharedMem* shared_mem = GetSharedMem();
-
-    if (shared_mem == nullptr)
-        return;
-
     shared_mem->touch.index = next_touch_index;
     ++next_touch_index %= shared_mem->touch.entries.size();
 
     // Get the current touch entry
-    TouchDataEntry* current_touch_entry = &shared_mem->touch.entries[shared_mem->touch.index];
+    TouchDataEntry* touch_entry = &shared_mem->touch.entries[shared_mem->touch.index];
+    bool pressed = false;
 
-    // Set touchpad position
-    current_touch_entry->x = next_touch_x;
-    current_touch_entry->y = next_touch_y;
-
-    // TODO(bunnei): Verify this behavior on real hardware
-    current_touch_entry->valid = (next_touch_x || next_touch_y) ? 1 : 0;
+    std::tie(touch_entry->x, touch_entry->y, pressed) = VideoCore::g_emu_window->GetTouchState();
+    touch_entry->valid = pressed ? 1 : 0;
 
     // TODO(bunnei): We're not doing anything with offset 0xA8 + 0x18 of HID SharedMemory, which
     // supposedly is "Touch-screen entry, which contains the raw coordinate data prior to being
@@ -194,6 +133,9 @@ void HIDInit() {
 
     g_shared_mem = SharedMemory::Create("HID:SharedMem");
 
+    next_pad_index = 0;
+    next_touch_index = 0;
+
     // Create event handles
     g_event_pad_or_touch_1 = Event::Create(RESETTYPE_ONESHOT, "HID:EventPadOrTouch1");
     g_event_pad_or_touch_2 = Event::Create(RESETTYPE_ONESHOT, "HID:EventPadOrTouch2");
@@ -203,8 +145,8 @@ void HIDInit() {
 }
 
 void HIDShutdown() {
-
 }
 
-}
-}
+} // namespace HID
+
+} // namespace Service

src/core/hle/service/hid/hid.h

@@ -176,38 +176,13 @@ const PadState PAD_CIRCLE_DOWN  = {{1u << 31}};
  */
 void GetIPCHandles(Interface* self);
 
-/**
- * Sets a Pad state (button or button combo) as pressed
- * @param pad_state PadState data indicating which buttons have been pressed
- */
-void PadButtonPress(const PadState& pad_state);
-
-/**
- * Sets a Pad state (button or button combo) as released
- * @param pad_state PadState data indicating which buttons have been released
- */
-void PadButtonRelease(const PadState& pad_state);
-
-/**
- * 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();
-
-/**
- * Signal that the touchpad has been pressed
- * @param x Touchpad x-coordinate in bottom screen pixels (between 0 and 320)
- * @param y Touchpad y-coordinate in bottom screen pixels (between 0 and 240)
- */
-void TouchPress(u16 x, u16 y);
-
-/// Signal that touchpad has been released
-void TouchRelease();
-
-/// Signal that touchpad updates have been completed
-void TouchUpdateComplete();
+/// Checks for user input updates
+void HIDUpdate();
 
+/// Initialize HID service
 void HIDInit();
+
+/// Shutdown HID service
 void HIDShutdown();
 
 }