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/*
* Copyright (C) 2010-2022 Apple 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. ``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
* 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 "config.h"
#include "DisplayRefreshMonitorManager.h"
#include "DisplayRefreshMonitor.h"
#include "DisplayRefreshMonitorClient.h"
#include "Logging.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
DisplayRefreshMonitorManager::~DisplayRefreshMonitorManager() = default;
DisplayRefreshMonitorManager& DisplayRefreshMonitorManager::sharedManager()
{
static NeverDestroyed<DisplayRefreshMonitorManager> manager;
return manager.get();
}
DisplayRefreshMonitor* DisplayRefreshMonitorManager::ensureMonitorForDisplayID(PlatformDisplayID displayID, DisplayRefreshMonitorFactory* factory)
{
if (auto* existingMonitor = monitorForDisplayID(displayID))
return existingMonitor;
auto monitor = DisplayRefreshMonitor::create(factory, displayID);
if (!monitor)
return nullptr;
LOG_WITH_STREAM(DisplayLink, stream << "[Web] DisplayRefreshMonitorManager::ensureMonitorForDisplayID() - created monitor " << monitor.get() << " for display " << displayID);
DisplayRefreshMonitor* result = monitor.get();
m_monitors.append(DisplayRefreshMonitorWrapper { WTFMove(monitor) });
return result;
}
void DisplayRefreshMonitorManager::unregisterClient(DisplayRefreshMonitorClient& client)
{
if (!client.hasDisplayID())
return;
PlatformDisplayID clientDisplayID = client.displayID();
auto index = findMonitorForDisplayID(clientDisplayID);
if (index == notFound)
return;
RefPtr<DisplayRefreshMonitor> monitor = m_monitors[index].monitor;
monitor->removeClient(client);
}
void DisplayRefreshMonitorManager::clientPreferredFramesPerSecondChanged(DisplayRefreshMonitorClient& client)
{
if (RefPtr monitor = monitorForClient(client))
monitor->clientPreferredFramesPerSecondChanged(client);
}
bool DisplayRefreshMonitorManager::scheduleAnimation(DisplayRefreshMonitorClient& client)
{
if (RefPtr monitor = monitorForClient(client)) {
client.setIsScheduled(true);
return monitor->requestRefreshCallback();
}
return false;
}
void DisplayRefreshMonitorManager::displayMonitorDisplayDidRefresh(DisplayRefreshMonitor&)
{
// Maybe we should remove monitors that haven't been active for some time.
}
void DisplayRefreshMonitorManager::windowScreenDidChange(PlatformDisplayID displayID, DisplayRefreshMonitorClient& client)
{
if (client.hasDisplayID() && client.displayID() == displayID)
return;
unregisterClient(client);
client.setDisplayID(displayID);
if (client.isScheduled())
scheduleAnimation(client);
}
std::optional<FramesPerSecond> DisplayRefreshMonitorManager::nominalFramesPerSecondForDisplay(PlatformDisplayID displayID, DisplayRefreshMonitorFactory* factory)
{
if (RefPtr monitor = ensureMonitorForDisplayID(displayID, factory))
return monitor->displayNominalFramesPerSecond();
return std::nullopt;
}
void DisplayRefreshMonitorManager::displayDidRefresh(PlatformDisplayID displayID, const DisplayUpdate& displayUpdate)
{
if (RefPtr monitor = monitorForDisplayID(displayID))
monitor->displayLinkFired(displayUpdate);
}
size_t DisplayRefreshMonitorManager::findMonitorForDisplayID(PlatformDisplayID displayID) const
{
return m_monitors.findIf([&](auto& monitorWrapper) {
return monitorWrapper.monitor->displayID() == displayID;
});
}
DisplayRefreshMonitor* DisplayRefreshMonitorManager::monitorForClient(DisplayRefreshMonitorClient& client)
{
if (!client.hasDisplayID())
return nullptr;
RefPtr monitor = ensureMonitorForDisplayID(client.displayID(), client.displayRefreshMonitorFactory());
if (monitor)
monitor->addClient(client);
return monitor.get();
}
DisplayRefreshMonitor* DisplayRefreshMonitorManager::monitorForDisplayID(PlatformDisplayID displayID) const
{
auto index = findMonitorForDisplayID(displayID);
return index == notFound ? nullptr : m_monitors[index].monitor.get();
}
}
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