| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWaylandCompositor module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** 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 General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) 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.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-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "shmserverbufferintegration.h" |
| |
| #include <QtGui/QOpenGLContext> |
| #include <QtGui/QOpenGLTexture> |
| #include <QtCore/QSharedMemory> |
| |
| #include <QtCore/QDebug> |
| |
| QT_BEGIN_NAMESPACE |
| |
| ShmServerBuffer::ShmServerBuffer(ShmServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format) |
| : QtWayland::ServerBuffer(qimage.size(),format) |
| , m_integration(integration) |
| , m_width(qimage.width()) |
| , m_height(qimage.height()) |
| , m_bpl(qimage.bytesPerLine()) |
| { |
| m_format = format; |
| switch (m_format) { |
| case RGBA32: |
| m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_RGBA32; |
| break; |
| case A8: |
| m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_A8; |
| break; |
| default: |
| qWarning("ShmServerBuffer: unsupported format"); |
| m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_RGBA32; |
| break; |
| } |
| |
| QString key = "qt_shm_emulation_" + QString::number(qimage.cacheKey()); |
| m_shm = new QSharedMemory(key); |
| qsizetype shm_size = qimage.sizeInBytes(); |
| bool ok = m_shm->create(shm_size) && m_shm->lock(); |
| if (ok) { |
| memcpy(m_shm->data(), qimage.constBits(), shm_size); |
| m_shm->unlock(); |
| } else { |
| qWarning() << "Could not create shared memory" << key << shm_size; |
| } |
| } |
| |
| ShmServerBuffer::~ShmServerBuffer() |
| { |
| delete m_shm; |
| } |
| |
| struct ::wl_resource *ShmServerBuffer::resourceForClient(struct ::wl_client *client) |
| { |
| auto *bufferResource = resourceMap().value(client); |
| if (!bufferResource) { |
| auto integrationResource = m_integration->resourceMap().value(client); |
| if (!integrationResource) { |
| qWarning("ShmServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the shm_emulation interface"); |
| return nullptr; |
| } |
| struct ::wl_resource *shm_integration_resource = integrationResource->handle; |
| Resource *resource = add(client, 1); |
| m_integration->send_server_buffer_created(shm_integration_resource, resource->handle, m_shm->key(), m_width, m_height, m_bpl, m_shm_format); |
| return resource->handle; |
| } |
| return bufferResource->handle; |
| } |
| |
| bool ShmServerBuffer::bufferInUse() |
| { |
| return resourceMap().count() > 0; |
| } |
| |
| QOpenGLTexture *ShmServerBuffer::toOpenGlTexture() |
| { |
| if (!m_texture) { |
| qWarning("ShmServerBuffer::toOpenGlTexture: no texture defined"); |
| } |
| return m_texture; |
| } |
| |
| ShmServerBufferIntegration::ShmServerBufferIntegration() |
| { |
| } |
| |
| ShmServerBufferIntegration::~ShmServerBufferIntegration() |
| { |
| } |
| |
| bool ShmServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor) |
| { |
| Q_ASSERT(QGuiApplication::platformNativeInterface()); |
| |
| QtWaylandServer::qt_shm_emulation_server_buffer::init(compositor->display(), 1); |
| return true; |
| } |
| |
| bool ShmServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const |
| { |
| switch (format) { |
| case QtWayland::ServerBuffer::RGBA32: |
| return true; |
| case QtWayland::ServerBuffer::A8: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| QtWayland::ServerBuffer *ShmServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format) |
| { |
| return new ShmServerBuffer(this, qimage, format); |
| } |
| |
| QT_END_NAMESPACE |