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HID: Refactored shared memory decoding for touchpad support.

This commit is contained in:
bunnei 2015-03-08 00:12:47 -05:00
parent 6c37a90d3f
commit 83a66dd701
2 changed files with 64 additions and 33 deletions
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51
src/core/hle/service/hid/hid.cpp
View File

@ -25,17 +25,17 @@ Kernel::SharedPtr<Kernel::Event> g_event_debug_pad;
// 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;
static u32 next_pad_index = 0;
static s16 next_pad_circle_x = 0;
static s16 next_pad_circle_y = 0;
/**
* Gets a pointer to the PadData structure inside HID shared memory
*/
static inline PadData* GetPadData() {
static inline SharedMem* GetPadData() {
if (g_shared_mem == nullptr)
return nullptr;
return reinterpret_cast<PadData*>(g_shared_mem->GetPointer().ValueOr(nullptr));
return reinterpret_cast<SharedMem*>(g_shared_mem->GetPointer().ValueOr(nullptr));
}
// TODO(peachum):
@ -60,10 +60,10 @@ static inline PadData* GetPadData() {
*/
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;
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;
}
/**
@ -87,20 +87,18 @@ void PadButtonRelease(const PadState& pad_state) {
* including both Pad key changes and analog circle Pad changes.
*/
void PadUpdateComplete() {
PadData* pad_data = GetPadData();
SharedMem* shared_mem = GetPadData();
if (pad_data == nullptr) {
if (shared_mem == 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();
shared_mem->pad.current_state.hex = next_state.hex;
shared_mem->pad.index = next_pad_index;
next_pad_index = (next_pad_index + 1) % shared_mem->pad.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;
u32 last_entry_index = (shared_mem->pad.index - 1) % shared_mem->pad.entries.size();
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;
@ -115,7 +113,7 @@ void PadUpdateComplete() {
removals.hex = changed.hex & old_state.hex;
// Get the current Pad entry
PadDataEntry* current_pad_entry = &pad_data->entries[pad_data->index];
PadDataEntry* current_pad_entry = &shared_mem->pad.entries[shared_mem->pad.index];
// Update entry properties
current_pad_entry->current_state.hex = next_state.hex;
@ -123,8 +121,19 @@ void PadUpdateComplete() {
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;
current_pad_entry->circle_pad_x = next_pad_circle_x;
current_pad_entry->circle_pad_y = next_pad_circle_y;
// If we just updated index 0, provide a new timestamp
if (shared_mem->pad.index == 0) {
shared_mem->pad.index_reset_ticks_previous = shared_mem->pad.index_reset_ticks;
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();
}
// If we just updated index 0, provide a new timestamp
if (pad_data->index == 0) {

46
src/core/hle/service/hid/hid.h
View File

@ -65,7 +65,7 @@ struct PadState {
};
/**
* Structure of a single entry in the PadData's Pad state history array.
* Structure of a single entry of Pad state history within HID shared memory
*/
struct PadDataEntry {
PadState current_state;
@ -77,22 +77,44 @@ struct PadDataEntry {
};
/**
* Structure of all data related to the 3DS Pad.
* Structure of a single entry of touch state history within HID shared memory
*/
struct PadData {
s64 index_reset_ticks;
s64 index_reset_ticks_previous;
u32 index; // the index of the last updated Pad state history element
struct TouchDataEntry {
u16 x;
u16 y;
u32 data_valid;
};
u32 pad1;
u32 pad2;
/**
* Structure of data stored in HID shared memory
*/
struct SharedMem {
// Offset 0x0 : "PAD" data, this is used for buttons and the circle pad
struct {
s64 index_reset_ticks;
s64 index_reset_ticks_previous;
u32 index; // Index of the last updated pad state history element
PadState current_state; // same as entries[index].current_state
u32 raw_circle_pad_data;
INSERT_PADDING_BYTES(0x8);
u32 pad3;
PadState current_state; // Same as entries[index].current_state
u32 raw_circle_pad_data;
std::array<PadDataEntry, 8> entries; // Pad state history
INSERT_PADDING_BYTES(0x4);
std::array<PadDataEntry, 8> entries; // Pad state history
} pad;
// Offset 0xA8 : Touchpad data, this is used for touchpad input
struct {
s64 index_reset_ticks;
s64 index_reset_ticks_previous;
u32 index; // Index of the last updated touch state history element
INSERT_PADDING_BYTES(0xC);
std::array<TouchDataEntry, 8> entries;
} touch;
};
// Pre-defined PadStates for single button presses