1 files changed, 143 insertions, 0 deletions
diff --git a/src/hardwareintegration/client/shm-emulation-server/shmserverbufferintegration.cpp b/src/hardwareintegration/client/shm-emulation-server/shmserverbufferintegration.cpp
new file mode 100644
index 000000000..bc597ebf8
--- /dev/null
+++ b/src/hardwareintegration/client/shm-emulation-server/shmserverbufferintegration.cpp
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "shmserverbufferintegration.h"
+#include <QtWaylandClient/private/qwaylanddisplay_p.h>
+#include <QDebug>
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QOpenGLTexture>
+#include <QtGui/QImage>
+#include <QtCore/QSharedMemory>
+
+QT_BEGIN_NAMESPACE
+
+static QOpenGLTexture *createTextureFromShm(const QString &key, int w, int h, int bpl, int format)
+{
+    QSharedMemory shm(key);
+    bool ok;
+    ok = shm.attach(QSharedMemory::ReadOnly);
+    if (!ok) {
+        qWarning() << "Could not attach to" << key;
+        return nullptr;
+    }
+    ok = shm.lock();
+    if (!ok) {
+        qWarning() << "Could not lock" << key << "for reading";
+        return nullptr;
+    }
+
+    QImage::Format imageFormat;
+    switch (format) {
+        case QtWayland::qt_shm_emulation_server_buffer::format_RGBA32:
+            imageFormat = QImage::Format_RGBA8888;
+            break;
+        case QtWayland::qt_shm_emulation_server_buffer::format_A8:
+            imageFormat = QImage::Format_Alpha8;
+            break;
+        default:
+            qWarning() << "ShmServerBuffer: unknown format" << format;
+            imageFormat = QImage::Format_RGBA8888;
+            break;
+    }
+
+    QImage image(static_cast<const uchar*>(shm.constData()), w, h, bpl, imageFormat);
+
+    if (!QOpenGLContext::currentContext())
+        qWarning("ShmServerBuffer: creating texture with no current context");
+
+    auto *tex = new QOpenGLTexture(image, QOpenGLTexture::DontGenerateMipMaps);
+    shm.unlock();
+    return tex;
+}
+
+
+namespace QtWaylandClient {
+ShmServerBuffer::ShmServerBuffer(ShmServerBufferIntegration *integration, const QString &key, int32_t width, int32_t height, int32_t bytes_per_line, int32_t format)
+    : QWaylandServerBuffer()
+    , m_integration(integration)
+    , m_texture(nullptr)
+    , m_key(key)
+    , m_bpl(bytes_per_line)
+    , m_format(format)
+{
+    m_size = QSize(width, height);
+}
+
+ShmServerBuffer::~ShmServerBuffer()
+{
+}
+
+QOpenGLTexture *ShmServerBuffer::toOpenGlTexture()
+{
+    if (!m_texture)
+        m_texture = createTextureFromShm(m_key, m_size.width(), m_size.height(), m_bpl, m_format);
+
+    return m_texture;
+}
+
+void ShmServerBufferIntegration::initialize(QWaylandDisplay *display)
+{
+    m_display = display;
+    display->addRegistryListener(&wlDisplayHandleGlobal, this);
+}
+
+QWaylandServerBuffer *ShmServerBufferIntegration::serverBuffer(struct qt_server_buffer *buffer)
+{
+    return static_cast<QWaylandServerBuffer *>(qt_server_buffer_get_user_data(buffer));
+}
+
+void ShmServerBufferIntegration::wlDisplayHandleGlobal(void *data, ::wl_registry *registry, uint32_t id, const QString &interface, uint32_t version)
+{
+    Q_UNUSED(version);
+    if (interface == "qt_shm_emulation_server_buffer") {
+        auto *integration = static_cast<ShmServerBufferIntegration *>(data);
+        integration->QtWayland::qt_shm_emulation_server_buffer::init(registry, id, 1);
+    }
+}
+
+
+void QtWaylandClient::ShmServerBufferIntegration::shm_emulation_server_buffer_server_buffer_created(qt_server_buffer *id, const QString &key, int32_t width, int32_t height, int32_t bytes_per_line, int32_t format)
+{
+    auto *server_buffer = new ShmServerBuffer(this, key, width, height, bytes_per_line, format);
+    qt_server_buffer_set_user_data(id, server_buffer);
+}
+
+}
+
+QT_END_NAMESPACE