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/*
* Copyright (C) 2011, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#include "third_party/blink/renderer/modules/gamepad/gamepad.h"
#include "base/i18n/uchar.h"
#include "base/trace_event/trace_event.h"
#include "third_party/blink/renderer/core/timing/performance.h"
#include "third_party/blink/renderer/modules/gamepad/gamepad_comparisons.h"
#include "third_party/blink/renderer/platform/wtf/text/string_view.h"
#include <algorithm>
namespace blink {
Gamepad::Gamepad(Client* client,
int index,
base::TimeTicks time_origin,
base::TimeTicks time_floor)
: client_(client),
index_(index),
timestamp_(0.0),
has_vibration_actuator_(false),
vibration_actuator_type_(device::GamepadHapticActuatorType::kDualRumble),
is_axis_data_dirty_(true),
is_button_data_dirty_(true),
time_origin_(time_origin),
time_floor_(time_floor) {
DCHECK(!time_origin_.is_null());
DCHECK(!time_floor_.is_null());
DCHECK_LE(time_origin_, time_floor_);
}
Gamepad::~Gamepad() = default;
void Gamepad::UpdateFromDeviceState(const device::Gamepad& device_gamepad) {
bool newly_connected;
GamepadComparisons::HasGamepadConnectionChanged(
connected(), // Old connected.
device_gamepad.connected, // New connected.
id() !=
StringView(base::i18n::ToUCharPtr(device_gamepad.id)), // ID changed.
&newly_connected, nullptr);
SetConnected(device_gamepad.connected);
SetTimestamp(device_gamepad);
SetAxes(device_gamepad.axes_length, device_gamepad.axes);
SetButtons(device_gamepad.buttons_length, device_gamepad.buttons);
// Always called as gamepads require additional steps to determine haptics
// capability and thus may provide them when not |newly_connected|. This is
// also simpler than logic to conditionally call.
SetVibrationActuatorInfo(device_gamepad.vibration_actuator);
// These fields are not expected to change and will only be written when the
// gamepad is newly connected.
if (newly_connected) {
SetId(base::i18n::ToUCharPtr(device_gamepad.id));
SetMapping(device_gamepad.mapping);
}
}
void Gamepad::SetMapping(device::GamepadMapping mapping) {
switch (mapping) {
case device::GamepadMapping::kNone:
mapping_ = "";
return;
case device::GamepadMapping::kStandard:
mapping_ = "standard";
return;
case device::GamepadMapping::kXrStandard:
mapping_ = "xr-standard";
return;
}
NOTREACHED();
}
const Gamepad::DoubleVector& Gamepad::axes() {
is_axis_data_dirty_ = false;
return axes_;
}
void Gamepad::SetAxes(unsigned count, const double* data) {
bool skip_update =
axes_.size() == count && std::equal(data, data + count, axes_.begin());
if (skip_update)
return;
axes_.resize(count);
if (count)
std::copy(data, data + count, axes_.begin());
is_axis_data_dirty_ = true;
}
const GamepadButtonVector& Gamepad::buttons() {
is_button_data_dirty_ = false;
return buttons_;
}
void Gamepad::SetButtons(unsigned count, const device::GamepadButton* data) {
bool skip_update =
buttons_.size() == count &&
std::equal(data, data + count, buttons_.begin(),
[](const device::GamepadButton& device_gamepad_button,
const Member<GamepadButton>& gamepad_button) {
return gamepad_button->IsEqual(device_gamepad_button);
});
if (skip_update)
return;
if (buttons_.size() != count) {
buttons_.resize(count);
for (unsigned i = 0; i < count; ++i)
buttons_[i] = MakeGarbageCollected<GamepadButton>();
}
for (unsigned i = 0; i < count; ++i)
buttons_[i]->UpdateValuesFrom(data[i]);
is_button_data_dirty_ = true;
}
GamepadHapticActuator* Gamepad::vibrationActuator() const {
return client_->GetVibrationActuatorForGamepad(*this);
}
void Gamepad::SetVibrationActuatorInfo(
const device::GamepadHapticActuator& actuator) {
has_vibration_actuator_ = actuator.not_null;
vibration_actuator_type_ = actuator.type;
}
// Convert the raw timestamp from the device to a relative one and apply the
// floor.
void Gamepad::SetTimestamp(const device::Gamepad& device_gamepad) {
base::TimeTicks last_updated =
base::TimeTicks() +
base::TimeDelta::FromMicroseconds(device_gamepad.timestamp);
if (last_updated < time_floor_)
last_updated = time_floor_;
timestamp_ = Performance::MonotonicTimeToDOMHighResTimeStamp(
time_origin_, last_updated, false);
if (device_gamepad.is_xr) {
base::TimeTicks now = base::TimeTicks::Now();
TRACE_COUNTER1("input", "XR gamepad pose age (ms)",
(now - last_updated).InMilliseconds());
}
}
void Gamepad::Trace(Visitor* visitor) const {
visitor->Trace(client_);
visitor->Trace(buttons_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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