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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "remoting/host/mouse_shape_pump.h"
#include <stdint.h>
#include <utility>
#include "base/functional/bind.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "remoting/proto/control.pb.h"
#include "remoting/protocol/cursor_shape_stub.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
#include "third_party/webrtc/modules/desktop_capture/mouse_cursor.h"
#include "third_party/webrtc/modules/desktop_capture/mouse_cursor_monitor.h"
namespace {
// Poll mouse shape at least 10 times a second.
constexpr base::TimeDelta kMaxCursorCaptureInterval = base::Milliseconds(100);
// Poll mouse shape at most 100 times a second.
constexpr base::TimeDelta kMinCursorCaptureInterval = base::Milliseconds(10);
} // namespace
namespace remoting {
MouseShapePump::MouseShapePump(
std::unique_ptr<webrtc::MouseCursorMonitor> mouse_cursor_monitor,
protocol::CursorShapeStub* cursor_shape_stub)
: mouse_cursor_monitor_(std::move(mouse_cursor_monitor)),
cursor_shape_stub_(cursor_shape_stub) {
mouse_cursor_monitor_->Init(this,
webrtc::MouseCursorMonitor::SHAPE_AND_POSITION);
StartCaptureTimer(kMaxCursorCaptureInterval);
}
MouseShapePump::~MouseShapePump() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void MouseShapePump::SetCursorCaptureInterval(base::TimeDelta new_interval) {
StartCaptureTimer(std::clamp(new_interval, kMinCursorCaptureInterval,
kMaxCursorCaptureInterval));
}
void MouseShapePump::SetMouseCursorMonitorCallback(
webrtc::MouseCursorMonitor::Callback* callback) {
callback_ = callback;
}
void MouseShapePump::Capture() {
DCHECK(thread_checker_.CalledOnValidThread());
mouse_cursor_monitor_->Capture();
}
void MouseShapePump::StartCaptureTimer(base::TimeDelta capture_interval) {
capture_timer_.Start(
FROM_HERE, std::move(capture_interval),
base::BindRepeating(&MouseShapePump::Capture, base::Unretained(this)));
}
void MouseShapePump::OnMouseCursor(webrtc::MouseCursor* cursor) {
DCHECK(thread_checker_.CalledOnValidThread());
if (!cursor) {
return;
}
std::unique_ptr<webrtc::MouseCursor> owned_cursor(cursor);
if (cursor_shape_stub_) {
std::unique_ptr<protocol::CursorShapeInfo> cursor_proto(
new protocol::CursorShapeInfo());
cursor_proto->set_data(std::string());
if (cursor->image() && cursor->image()->data()) {
cursor_proto->set_width(cursor->image()->size().width());
cursor_proto->set_height(cursor->image()->size().height());
cursor_proto->set_hotspot_x(cursor->hotspot().x());
cursor_proto->set_hotspot_y(cursor->hotspot().y());
uint8_t* current_row = cursor->image()->data();
for (int y = 0; y < cursor->image()->size().height(); ++y) {
cursor_proto->mutable_data()->append(
current_row,
current_row + cursor->image()->size().width() *
webrtc::DesktopFrame::kBytesPerPixel);
current_row += cursor->image()->stride();
}
} else {
cursor_proto->set_width(0);
cursor_proto->set_height(0);
cursor_proto->set_hotspot_x(0);
cursor_proto->set_hotspot_y(0);
}
cursor_shape_stub_->SetCursorShape(*cursor_proto);
}
if (callback_) {
callback_->OnMouseCursor(owned_cursor.release());
}
}
void MouseShapePump::OnMouseCursorPosition(
const webrtc::DesktopVector& position) {
if (callback_) {
callback_->OnMouseCursorPosition(position);
}
}
} // namespace remoting
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