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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/scoped_input_event.h"
#include "base/android/build_info.h"
#include "base/check.h"
#include "base/notreached.h"
namespace base::android {
// The class calls AInputEvent_release which was added only in Android S(31).
#ifndef SCOPED_INPUT_EVENT_MIN_API
#define SCOPED_INPUT_EVENT_MIN_API 31
#endif
ScopedInputEvent::ScopedInputEvent(const AInputEvent* event) {
CHECK(base::android::BuildInfo::GetInstance()->sdk_int() >=
SCOPED_INPUT_EVENT_MIN_API);
CHECK(event);
a_input_event_ = event;
}
ScopedInputEvent::~ScopedInputEvent() {
DestroyIfNeeded();
}
ScopedInputEvent::ScopedInputEvent(ScopedInputEvent&& other)
: a_input_event_(other.a_input_event_) {
other.a_input_event_ = nullptr;
}
ScopedInputEvent& ScopedInputEvent::operator=(ScopedInputEvent&& other) {
if (this != &other) {
DestroyIfNeeded();
a_input_event_ = other.a_input_event_;
other.a_input_event_ = nullptr;
}
return *this;
}
void ScopedInputEvent::WriteIntoTrace(
perfetto::TracedProto<perfetto::protos::pbzero::EventForwarder> forwarder)
const {
if (!a_input_event_) {
return;
}
const int history_size =
static_cast<const int>(AMotionEvent_getHistorySize(a_input_event_));
forwarder->set_history_size(history_size);
forwarder->set_latest_time_ns(AMotionEvent_getEventTime(a_input_event_));
if (history_size > 0) {
forwarder->set_oldest_time_ns(AMotionEvent_getHistoricalEventTime(
a_input_event_, /* history_index= */ 0));
}
forwarder->set_down_time_ns(AMotionEvent_getDownTime(a_input_event_));
forwarder->set_x_pixel(
AMotionEvent_getX(a_input_event_, /* pointer_index= */ 0));
forwarder->set_y_pixel(
AMotionEvent_getY(a_input_event_, /* pointer_index= */ 0));
const int action =
AMotionEvent_getAction(a_input_event_) & AMOTION_EVENT_ACTION_MASK;
forwarder->set_action(
static_cast<perfetto::protos::pbzero::EventForwarder::AMotionEventAction>(
action));
}
void ScopedInputEvent::DestroyIfNeeded() {
if (a_input_event_ == nullptr) {
return;
}
// If check to suppress the compiler warning.
if (__builtin_available(android SCOPED_INPUT_EVENT_MIN_API, *)) {
AInputEvent_release(a_input_event_);
a_input_event_ = nullptr;
return;
}
NOTREACHED();
}
} // namespace base::android
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