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| |
| #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(const QString &key, const QSize& size, int bytesPerLine, QWaylandServerBuffer::Format format) |
| : m_key(key) |
| , m_bpl(bytesPerLine) |
| { |
| m_format = format; |
| m_size = size; |
| } |
| |
| 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) |
| { |
| QSize size(width, height); |
| auto fmt = QWaylandServerBuffer::Format(format); |
| auto *server_buffer = new ShmServerBuffer(key, size, bytes_per_line, fmt); |
| qt_server_buffer_set_user_data(id, server_buffer); |
| } |
| |
| } |
| |
| QT_END_NAMESPACE |