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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qwlbuffermanager_p.h"
#include <QWaylandCompositor>
#include <QtWaylandCompositor/private/qwaylandcompositor_p.h>
#include <QtWaylandCompositor/private/qwlclientbufferintegration_p.h>
#include <QDebug>
QT_BEGIN_NAMESPACE
namespace QtWayland {
BufferManager::BufferManager(QWaylandCompositor *compositor)
: QObject(compositor)
, m_compositor(compositor)
{
}
struct buffer_manager_destroy_listener : wl_listener
{
buffer_manager_destroy_listener()
{
notify = BufferManager::destroy_listener_callback;
wl_list_init(&this->link);
}
BufferManager *d = nullptr;
};
void BufferManager::registerBuffer(wl_resource *buffer_resource, ClientBuffer *clientBuffer)
{
m_buffers[buffer_resource] = clientBuffer;
auto *destroy_listener = new buffer_manager_destroy_listener;
destroy_listener->d = this;
wl_resource_add_destroy_listener(buffer_resource, destroy_listener);
}
ClientBuffer *BufferManager::getBuffer(wl_resource *buffer_resource)
{
if (!buffer_resource)
return nullptr;
auto it = m_buffers.find(buffer_resource);
if (it != m_buffers.end())
return it.value();
ClientBuffer *newBuffer = nullptr;
for (auto *integration : QWaylandCompositorPrivate::get(m_compositor)->clientBufferIntegrations()) {
newBuffer = integration->createBufferFor(buffer_resource);
if (newBuffer)
break;
}
if (newBuffer)
registerBuffer(buffer_resource, newBuffer);
else
qCWarning(qLcWaylandCompositorHardwareIntegration) << "Could not create buffer for resource.";
return newBuffer;
}
void BufferManager::destroy_listener_callback(wl_listener *listener, void *data)
{
buffer_manager_destroy_listener *destroy_listener = static_cast<buffer_manager_destroy_listener *>(listener);
BufferManager *self = destroy_listener->d;
struct ::wl_resource *buffer = static_cast<struct ::wl_resource *>(data);
wl_list_remove(&destroy_listener->link);
delete destroy_listener;
Q_ASSERT(self);
Q_ASSERT(buffer);
ClientBuffer *clientBuffer = self->m_buffers.take(buffer);
if (!clientBuffer)
return;
clientBuffer->setDestroyed();
}
}
QT_END_NAMESPACE
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