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service/hid: Use ring buffer for gestures

master
german77 2021-10-21 00:49:09 +07:00 committed by Narr the Reg
parent 85052b8662
commit 95cf66b655
2 changed files with 52 additions and 79 deletions
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107
src/core/hle/service/hid/controllers/gesture.cpp
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@ -31,7 +31,8 @@ Controller_Gesture::Controller_Gesture(Core::System& system_) : ControllerBase(s
Controller_Gesture::~Controller_Gesture() = default;
void Controller_Gesture::OnInit() {
shared_memory.header.entry_count = 0;
gesture_lifo.entry_count = 0;
gesture_lifo.last_entry_index = 0;
force_update = true;
}
@ -39,27 +40,25 @@ void Controller_Gesture::OnRelease() {}
void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {
shared_memory.header.entry_count = 0;
shared_memory.header.last_entry_index = 0;
gesture_lifo.entry_count = 0;
gesture_lifo.last_entry_index = 0;
std::memcpy(data, &gesture_lifo, sizeof(gesture_lifo));
return;
}
ReadTouchInput();
GestureProperties gesture = GetGestureProperties();
f32 time_difference = static_cast<f32>(shared_memory.header.timestamp - last_update_timestamp) /
(1000 * 1000 * 1000);
f32 time_difference =
static_cast<f32>(gesture_lifo.timestamp - last_update_timestamp) / (1000 * 1000 * 1000);
// Only update if necesary
if (!ShouldUpdateGesture(gesture, time_difference)) {
return;
}
last_update_timestamp = shared_memory.header.timestamp;
last_update_timestamp = gesture_lifo.timestamp;
UpdateGestureSharedMemory(data, size, gesture, time_difference);
}
@ -75,7 +74,7 @@ void Controller_Gesture::ReadTouchInput() {
bool Controller_Gesture::ShouldUpdateGesture(const GestureProperties& gesture,
f32 time_difference) {
const auto& last_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry = GetLastGestureEntry();
if (force_update) {
force_update = false;
return true;
@ -103,24 +102,16 @@ void Controller_Gesture::UpdateGestureSharedMemory(u8* data, std::size_t size,
GestureType type = GestureType::Idle;
GestureAttribute attributes{};
const auto& last_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
shared_memory.header.last_entry_index = (shared_memory.header.last_entry_index + 1) % 17;
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry = gesture_lifo.ReadCurrentEntry().state;
if (shared_memory.header.entry_count < 16) {
shared_memory.header.entry_count++;
}
cur_entry.sampling_number = last_entry.sampling_number + 1;
cur_entry.sampling_number2 = cur_entry.sampling_number;
// Reset values to default
cur_entry.delta = {};
cur_entry.vel_x = 0;
cur_entry.vel_y = 0;
cur_entry.direction = GestureDirection::None;
cur_entry.rotation_angle = 0;
cur_entry.scale = 0;
// Reset next state to default
next_state.sampling_number = last_entry.sampling_number + 1;
next_state.delta = {};
next_state.vel_x = 0;
next_state.vel_y = 0;
next_state.direction = GestureDirection::None;
next_state.rotation_angle = 0;
next_state.scale = 0;
if (gesture.active_points > 0) {
if (last_gesture.active_points == 0) {
@ -133,15 +124,16 @@ void Controller_Gesture::UpdateGestureSharedMemory(u8* data, std::size_t size,
}
// Apply attributes
cur_entry.detection_count = gesture.detection_count;
cur_entry.type = type;
cur_entry.attributes = attributes;
cur_entry.pos = gesture.mid_point;
cur_entry.point_count = static_cast<s32>(gesture.active_points);
cur_entry.points = gesture.points;
next_state.detection_count = gesture.detection_count;
next_state.type = type;
next_state.attributes = attributes;
next_state.pos = gesture.mid_point;
next_state.point_count = static_cast<s32>(gesture.active_points);
next_state.points = gesture.points;
last_gesture = gesture;
std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(SharedMemory));
gesture_lifo.WriteNextEntry(next_state);
std::memcpy(data + SHARED_MEMORY_OFFSET, &gesture_lifo, sizeof(gesture_lifo));
}
void Controller_Gesture::NewGesture(GestureProperties& gesture, GestureType& type,
@ -245,19 +237,18 @@ void Controller_Gesture::SetTapEvent(GestureProperties& gesture,
void Controller_Gesture::UpdatePanEvent(GestureProperties& gesture,
GestureProperties& last_gesture_props, GestureType& type,
f32 time_difference) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry = GetLastGestureEntry();
cur_entry.delta = gesture.mid_point - last_entry.pos;
cur_entry.vel_x = static_cast<f32>(cur_entry.delta.x) / time_difference;
cur_entry.vel_y = static_cast<f32>(cur_entry.delta.y) / time_difference;
next_state.delta = gesture.mid_point - last_entry.pos;
next_state.vel_x = static_cast<f32>(next_state.delta.x) / time_difference;
next_state.vel_y = static_cast<f32>(next_state.delta.y) / time_difference;
last_pan_time_difference = time_difference;
// Promote to pinch type
if (std::abs(gesture.average_distance - last_gesture_props.average_distance) >
pinch_threshold) {
type = GestureType::Pinch;
cur_entry.scale = gesture.average_distance / last_gesture_props.average_distance;
next_state.scale = gesture.average_distance / last_gesture_props.average_distance;
}
const f32 angle_between_two_lines = std::atan((gesture.angle - last_gesture_props.angle) /
@ -265,22 +256,21 @@ void Controller_Gesture::UpdatePanEvent(GestureProperties& gesture,
// Promote to rotate type
if (std::abs(angle_between_two_lines) > angle_threshold) {
type = GestureType::Rotate;
cur_entry.scale = 0;
cur_entry.rotation_angle = angle_between_two_lines * 180.0f / Common::PI;
next_state.scale = 0;
next_state.rotation_angle = angle_between_two_lines * 180.0f / Common::PI;
}
}
void Controller_Gesture::EndPanEvent(GestureProperties& gesture,
GestureProperties& last_gesture_props, GestureType& type,
f32 time_difference) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry = GetLastGestureEntry();
cur_entry.vel_x =
next_state.vel_x =
static_cast<f32>(last_entry.delta.x) / (last_pan_time_difference + time_difference);
cur_entry.vel_y =
next_state.vel_y =
static_cast<f32>(last_entry.delta.y) / (last_pan_time_difference + time_difference);
const f32 curr_vel =
std::sqrt((cur_entry.vel_x * cur_entry.vel_x) + (cur_entry.vel_y * cur_entry.vel_y));
std::sqrt((next_state.vel_x * next_state.vel_x) + (next_state.vel_y * next_state.vel_y));
// Set swipe event with parameters
if (curr_vel > swipe_threshold) {
@ -290,42 +280,37 @@ void Controller_Gesture::EndPanEvent(GestureProperties& gesture,
// End panning without swipe
type = GestureType::Complete;
cur_entry.vel_x = 0;
cur_entry.vel_y = 0;
next_state.vel_x = 0;
next_state.vel_y = 0;
force_update = true;
}
void Controller_Gesture::SetSwipeEvent(GestureProperties& gesture,
GestureProperties& last_gesture_props, GestureType& type) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry = GetLastGestureEntry();
type = GestureType::Swipe;
gesture = last_gesture_props;
force_update = true;
cur_entry.delta = last_entry.delta;
next_state.delta = last_entry.delta;
if (std::abs(cur_entry.delta.x) > std::abs(cur_entry.delta.y)) {
if (cur_entry.delta.x > 0) {
cur_entry.direction = GestureDirection::Right;
if (std::abs(next_state.delta.x) > std::abs(next_state.delta.y)) {
if (next_state.delta.x > 0) {
next_state.direction = GestureDirection::Right;
return;
}
cur_entry.direction = GestureDirection::Left;
next_state.direction = GestureDirection::Left;
return;
}
if (cur_entry.delta.y > 0) {
cur_entry.direction = GestureDirection::Down;
if (next_state.delta.y > 0) {
next_state.direction = GestureDirection::Down;
return;
}
cur_entry.direction = GestureDirection::Up;
}
Controller_Gesture::GestureState& Controller_Gesture::GetLastGestureEntry() {
return shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
next_state.direction = GestureDirection::Up;
}
const Controller_Gesture::GestureState& Controller_Gesture::GetLastGestureEntry() const {
return shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
return gesture_lifo.ReadCurrentEntry().state;
}
Controller_Gesture::GestureProperties Controller_Gesture::GetGestureProperties() {

24
src/core/hle/service/hid/controllers/gesture.h
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@ -71,7 +71,6 @@ private:
// This is nn::hid::GestureState
struct GestureState {
s64_le sampling_number;
s64_le sampling_number2;
s64_le detection_count;
GestureType type;
GestureDirection direction;
@ -85,21 +84,7 @@ private:
s32_le point_count;
std::array<Common::Point<s32_le>, 4> points;
};
static_assert(sizeof(GestureState) == 0x68, "GestureState is an invalid size");
struct CommonHeader {
s64_le timestamp;
s64_le total_entry_count;
s64_le last_entry_index;
s64_le entry_count;
};
static_assert(sizeof(CommonHeader) == 0x20, "CommonHeader is an invalid size");
struct SharedMemory {
CommonHeader header;
std::array<GestureState, 17> gesture_states;
};
static_assert(sizeof(SharedMemory) == 0x708, "SharedMemory is an invalid size");
static_assert(sizeof(GestureState) == 0x60, "GestureState is an invalid size");
struct Finger {
Common::Point<f32> pos{};
@ -153,13 +138,16 @@ private:
GestureType& type);
// Retrieves the last gesture entry, as indicated by shared memory indices.
[[nodiscard]] GestureState& GetLastGestureEntry();
[[nodiscard]] const GestureState& GetLastGestureEntry() const;
// Returns the average distance, angle and middle point of the active fingers
GestureProperties GetGestureProperties();
SharedMemory shared_memory{};
// This is nn::hid::detail::GestureLifo
Lifo<GestureState> gesture_lifo{};
static_assert(sizeof(gesture_lifo) == 0x708, "gesture_lifo is an invalid size");
GestureState next_state{};
Core::HID::EmulatedConsole* console;
std::array<Finger, MAX_POINTS> fingers{};