diff --git a/src/screencast.cpp b/src/screencast.cpp index a24b948..9ac7865 100644 --- a/src/screencast.cpp +++ b/src/screencast.cpp @@ -1,611 +1,615 @@ /* * Copyright © 2018 Red Hat, Inc * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . * * Authors: * Jan Grulich */ #include "screencast.h" #include "session.h" #include "screencaststream.h" #include "screenchooserdialog.h" #include #include #include #include #include #include #include #include // KWayland #include #include #include #include #include // system #include #include Q_LOGGING_CATEGORY(XdgDesktopPortalKdeScreenCast, "xdp-kde-screencast") Q_DECLARE_METATYPE(ScreenCastPortal::Stream); Q_DECLARE_METATYPE(ScreenCastPortal::Streams); const QDBusArgument &operator >> (const QDBusArgument &arg, ScreenCastPortal::Stream &stream) { arg.beginStructure(); arg >> stream.nodeId; arg.beginMap(); while (!arg.atEnd()) { QString key; QVariant map; arg.beginMapEntry(); arg >> key >> map; arg.endMapEntry(); stream.map.insert(key, map); } arg.endMap(); arg.endStructure(); return arg; } const QDBusArgument &operator << (QDBusArgument &arg, const ScreenCastPortal::Stream &stream) { arg.beginStructure(); arg << stream.nodeId; arg << stream.map; arg.endStructure(); return arg; } static const char * formatGLError(GLenum err) { switch(err) { case GL_NO_ERROR: return "GL_NO_ERROR"; case GL_INVALID_ENUM: return "GL_INVALID_ENUM"; case GL_INVALID_VALUE: return "GL_INVALID_VALUE"; case GL_INVALID_OPERATION: return "GL_INVALID_OPERATION"; case GL_STACK_OVERFLOW: return "GL_STACK_OVERFLOW"; case GL_STACK_UNDERFLOW: return "GL_STACK_UNDERFLOW"; case GL_OUT_OF_MEMORY: return "GL_OUT_OF_MEMORY"; default: return (QLatin1String("0x") + QString::number(err, 16)).toLocal8Bit().constData(); } } // Thank you kscreen void ScreenCastPortalOutput::setOutputType(const QString &type) { const auto embedded = { QLatin1String("LVDS"), QLatin1String("IDP"), QLatin1String("EDP"), QLatin1String("LCD") }; for (const QLatin1String &pre : embedded) { if (type.toUpper().startsWith(pre)) { outputType = OutputType::Laptop; return; } } if (type.contains("VGA") || type.contains("DVI") || type.contains("HDMI") || type.contains("Panel") || type.contains("DisplayPort") || type.startsWith("DP") || type.contains("unknown")) { outputType = OutputType::Monitor; } else if (type.contains("TV")) { outputType = OutputType::Television; } else { outputType = OutputType::Monitor; } } ScreenCastPortal::ScreenCastPortal(QObject *parent) : QDBusAbstractAdaptor(parent) , m_eglInitialized(false) , m_registryInitialized(false) , m_streamingEnabled(false) , m_connection(nullptr) , m_queue(nullptr) , m_registry(nullptr) , m_remoteAccessManager(nullptr) { initDrm(); initWayland(); qDBusRegisterMetaType(); qDBusRegisterMetaType(); } ScreenCastPortal::~ScreenCastPortal() { if (m_remoteAccessManager) { m_remoteAccessManager->destroy(); } if (m_drmFd) { gbm_device_destroy(m_gbmDevice); } m_stream->deleteLater(); } void ScreenCastPortal::createPipeWireStream(const QSize &resolution) { m_stream = new ScreenCastStream(resolution); m_stream->init(); connect(m_stream, &ScreenCastStream::streamReady, this, [] (uint nodeId) { qCDebug(XdgDesktopPortalKdeScreenCast) << "Pipewire stream is ready: " << nodeId; }); connect(m_stream, &ScreenCastStream::startStreaming, this, [this] { qCDebug(XdgDesktopPortalKdeScreenCast) << "Start streaming"; m_streamingEnabled = true; if (!m_registryInitialized) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Cannot start stream because registry is not initialized yet"; return; } if (m_registry->hasInterface(KWayland::Client::Registry::Interface::RemoteAccessManager)) { KWayland::Client::Registry::AnnouncedInterface interface = m_registry->interface(KWayland::Client::Registry::Interface::RemoteAccessManager); if (!interface.name && !interface.version) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Cannot start stream because remote access interface is not initialized yet"; return; } m_remoteAccessManager = m_registry->createRemoteAccessManager(interface.name, interface.version); connect(m_remoteAccessManager, &KWayland::Client::RemoteAccessManager::bufferReady, this, [this] (const void *output, const KWayland::Client::RemoteBuffer * rbuf) { Q_UNUSED(output); connect(rbuf, &KWayland::Client::RemoteBuffer::parametersObtained, this, [this, rbuf] { processBuffer(rbuf); }); }); } }); connect(m_stream, &ScreenCastStream::stopStreaming, this, &ScreenCastPortal::stopStreaming); } void ScreenCastPortal::initDrm() { m_drmFd = open("/dev/dri/renderD128", O_RDWR); if (m_drmFd == -1) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Cannot open render node: " << strerror(errno); return; } m_gbmDevice = gbm_create_device(m_drmFd); if (!m_gbmDevice) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Cannot create GBM device: " << strerror(errno); return; } initEGL(); } void ScreenCastPortal::initEGL() { // Get the list of client extensions const char* clientExtensionsCString = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS); const QByteArray clientExtensionsString = QByteArray::fromRawData(clientExtensionsCString, qstrlen(clientExtensionsCString)); if (clientExtensionsString.isEmpty()) { // If eglQueryString() returned NULL, the implementation doesn't support // EGL_EXT_client_extensions. Expect an EGL_BAD_DISPLAY error. qCWarning(XdgDesktopPortalKdeScreenCast) << "No client extensions defined! " << formatGLError(eglGetError()); return; } m_egl.extensions = clientExtensionsString.split(' '); // Use eglGetPlatformDisplayEXT() to get the display pointer // if the implementation supports it. if (!m_egl.extensions.contains(QByteArrayLiteral("EGL_EXT_platform_base")) || !m_egl.extensions.contains(QByteArrayLiteral("EGL_MESA_platform_gbm"))) { qCWarning(XdgDesktopPortalKdeScreenCast) << "One of required EGL extensions is missing"; return; } m_egl.display = eglGetPlatformDisplayEXT(EGL_PLATFORM_GBM_MESA, m_gbmDevice, nullptr); if (m_egl.display == EGL_NO_DISPLAY) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Error during obtaining EGL display: " << formatGLError(eglGetError()); return; } EGLint major, minor; if (eglInitialize(m_egl.display, &major, &minor) == EGL_FALSE) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Error during eglInitialize: " << formatGLError(eglGetError()); return; } if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE) { qCWarning(XdgDesktopPortalKdeScreenCast) << "bind OpenGL API failed"; return; } m_egl.context = eglCreateContext(m_egl.display, nullptr, EGL_NO_CONTEXT, nullptr); if (m_egl.context == EGL_NO_CONTEXT) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Couldn't create EGL context: " << formatGLError(eglGetError()); return; } qCDebug(XdgDesktopPortalKdeScreenCast) << "Egl initialization succeeded"; qCDebug(XdgDesktopPortalKdeScreenCast) << QString("EGL version: %1.%2").arg(major).arg(minor); m_eglInitialized = true; } void ScreenCastPortal::initWayland() { m_thread = new QThread(this); m_connection = new KWayland::Client::ConnectionThread; connect(m_connection, &KWayland::Client::ConnectionThread::connected, this, &ScreenCastPortal::setupRegistry, Qt::QueuedConnection); connect(m_connection, &KWayland::Client::ConnectionThread::connectionDied, this, [this] { if (m_queue) { delete m_queue; m_queue = nullptr; } m_connection->deleteLater(); m_connection = nullptr; if (m_thread) { m_thread->quit(); if (!m_thread->wait(3000)) { m_thread->terminate(); m_thread->wait(); } delete m_thread; m_thread = nullptr; } }); connect(m_connection, &KWayland::Client::ConnectionThread::failed, this, [this] { m_thread->quit(); m_thread->wait(); }); m_thread->start(); m_connection->moveToThread(m_thread); m_connection->initConnection(); } uint ScreenCastPortal::CreateSession(const QDBusObjectPath &handle, const QDBusObjectPath &session_handle, const QString &app_id, const QVariantMap &options, QVariantMap &results) { Q_UNUSED(results) qCDebug(XdgDesktopPortalKdeScreenCast) << "CreateSession called with parameters:"; qCDebug(XdgDesktopPortalKdeScreenCast) << " handle: " << handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " session_handle: " << session_handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " app_id: " << app_id; qCDebug(XdgDesktopPortalKdeScreenCast) << " options: " << options; QDBusConnection sessionBus = QDBusConnection::sessionBus(); Session *session = new Session(this, app_id, session_handle.path()); if (sessionBus.registerVirtualObject(session_handle.path(), session, QDBusConnection::VirtualObjectRegisterOption::SubPath)) { connect(session, &Session::closed, [this, session, session_handle] () { m_sessionList.remove(session_handle.path()); QDBusConnection::sessionBus().unregisterObject(session_handle.path()); session->deleteLater(); stopStreaming(); }); m_sessionList.insert(session_handle.path(), session); return 0; } else { qCDebug(XdgDesktopPortalKdeScreenCast) << sessionBus.lastError().message(); qCDebug(XdgDesktopPortalKdeScreenCast) << "Failed to register session object: " << session_handle.path(); session->deleteLater(); return 2; } } uint ScreenCastPortal::SelectSources(const QDBusObjectPath &handle, const QDBusObjectPath &session_handle, const QString &app_id, const QVariantMap &options, QVariantMap &results) { Q_UNUSED(results) qCDebug(XdgDesktopPortalKdeScreenCast) << "SelectSource called with parameters:"; qCDebug(XdgDesktopPortalKdeScreenCast) << " handle: " << handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " session_handle: " << session_handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " app_id: " << app_id; qCDebug(XdgDesktopPortalKdeScreenCast) << " options: " << options; uint types = Monitor; Session *session = nullptr; session = m_sessionList.value(session_handle.path()); if (!session) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Tried to select sources on non-existing session " << session_handle.path(); return 2; } if (options.contains(QLatin1String("multiple"))) { session->setMultipleSources(options.value(QLatin1String("multiple")).toBool()); } if (options.contains(QLatin1String("types"))) { types = (SourceType)(options.value(QLatin1String("types")).toUInt()); } if (types == Window) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Screen cast of a window is not implemented"; return 2; } return 0; } uint ScreenCastPortal::Start(const QDBusObjectPath &handle, const QDBusObjectPath &session_handle, const QString &app_id, const QString &parent_window, const QVariantMap &options, QVariantMap &results) { Q_UNUSED(results) qCDebug(XdgDesktopPortalKdeScreenCast) << "Start called with parameters:"; qCDebug(XdgDesktopPortalKdeScreenCast) << " handle: " << handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " session_handle: " << session_handle.path(); qCDebug(XdgDesktopPortalKdeScreenCast) << " app_id: " << app_id; qCDebug(XdgDesktopPortalKdeScreenCast) << " parent_window: " << parent_window; qCDebug(XdgDesktopPortalKdeScreenCast) << " options: " << options; Session *session = nullptr; session = m_sessionList.value(session_handle.path()); if (!session) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Tried to select sources on non-existing session " << session_handle.path(); return 2; } if (m_outputMap.isEmpty()) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Failed to show dialog as there is no screen to select"; return 2; } if (!m_eglInitialized) { qCWarning(XdgDesktopPortalKdeScreenCast) << "EGL is not initialized, we are not able to process screen content"; return 2; } QScopedPointer screenDialog(new ScreenChooserDialog(m_outputMap, session->multipleSources())); if (screenDialog->exec()) { ScreenCastPortalOutput selectedOutput = m_outputMap.value(screenDialog->selectedScreens().first()); // Initialize PipeWire createPipeWireStream(selectedOutput.resolution); // HACK wait for stream to be ready bool streamReady = false; QEventLoop loop; connect(m_stream, &ScreenCastStream::streamReady, this, [&loop, &streamReady] { loop.quit(); streamReady = true; }); QTimer::singleShot(3000, &loop, &QEventLoop::quit); loop.exec(); disconnect(m_stream, &ScreenCastStream::streamReady, this, nullptr); if (!streamReady) { qCWarning(XdgDesktopPortalKdeScreenCast) << "Pipewire stream is not ready to be streamed"; return 2; } // TODO support multiple outputs qCDebug(XdgDesktopPortalKdeScreenCast) << "Pipewire node id: " << m_stream->nodeId(); KWayland::Client::Output *output = new KWayland::Client::Output(this); output->setup(m_registry->bindOutput(selectedOutput.waylandOutputName, selectedOutput.waylandOutputVersion)); m_bindOutputs << output; Stream stream; stream.nodeId = m_stream->nodeId(); stream.map = QVariantMap({{QLatin1String("size"), selectedOutput.resolution}}); results.insert(QLatin1String("streams"), QVariant::fromValue({stream})); return 0; } return 1; } void ScreenCastPortal::addOutput(quint32 name, quint32 version) { KWayland::Client::Output *output = new KWayland::Client::Output(this); output->setup(m_registry->bindOutput(name, version)); connect(output, &KWayland::Client::Output::changed, this, [this, name, version, output] () { qCDebug(XdgDesktopPortalKdeScreenCast) << "Adding output:"; qCDebug(XdgDesktopPortalKdeScreenCast) << " manufacturer: " << output->manufacturer(); qCDebug(XdgDesktopPortalKdeScreenCast) << " model: " << output->model(); qCDebug(XdgDesktopPortalKdeScreenCast) << " resolution: " << output->pixelSize(); ScreenCastPortalOutput portalOutput; portalOutput.manufacturer = output->manufacturer(); portalOutput.model = output->model(); portalOutput.resolution = output->pixelSize(); portalOutput.waylandOutputName = name; portalOutput.waylandOutputVersion = version; portalOutput.setOutputType(output->model()); m_outputMap.insert(name, portalOutput); delete output; }); } void ScreenCastPortal::removeOutput(quint32 name) { ScreenCastPortalOutput output = m_outputMap.take(name); qCDebug(XdgDesktopPortalKdeScreenCast) << "Removing output:"; qCDebug(XdgDesktopPortalKdeScreenCast) << " manufacturer: " << output.manufacturer; qCDebug(XdgDesktopPortalKdeScreenCast) << " model: " << output.model; } void ScreenCastPortal::processBuffer(const KWayland::Client::RemoteBuffer* rbuf) { QScopedPointer guard(rbuf); auto gbmHandle = rbuf->fd(); auto width = rbuf->width(); auto height = rbuf->height(); auto stride = rbuf->stride(); auto format = rbuf->format(); qCDebug(XdgDesktopPortalKdeScreenCast) << QString("Incoming GBM fd %1, %2x%3, stride %4, fourcc 0x%5").arg(gbmHandle).arg(width).arg(height).arg(stride).arg(QString::number(format, 16)); if (!m_streamingEnabled) { qCDebug(XdgDesktopPortalKdeScreenCast) << "Streaming is disabled"; close(gbmHandle); return; } if (m_lastFrameTime.isValid() && m_lastFrameTime.msecsTo(QDateTime::currentDateTime()) < (1000 / m_stream->framerate())) { close(gbmHandle); return; } if (!gbm_device_is_format_supported(m_gbmDevice, format, GBM_BO_USE_SCANOUT)) { - qCritical() << "GBM format is not supported by device!"; + qCWarning(XdgDesktopPortalKdeScreenCast) << "Failed to process buffer: GBM format is not supported by device!"; + close(gbmHandle); + return; } // import GBM buffer that was passed from KWin gbm_import_fd_data importInfo = {gbmHandle, width, height, stride, format}; gbm_bo *imported = gbm_bo_import(m_gbmDevice, GBM_BO_IMPORT_FD, &importInfo, GBM_BO_USE_SCANOUT); if (!imported) { - qCritical() << "Cannot import passed GBM fd:" << strerror(errno); + qCWarning(XdgDesktopPortalKdeScreenCast) << "Failed to process buffer: Cannot import passed GBM fd - " << strerror(errno); + close(gbmHandle); + return; } // bind context to render thread eglMakeCurrent(m_egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE, m_egl.context); // create EGL image from imported BO EGLImageKHR image = eglCreateImageKHR(m_egl.display, nullptr, EGL_NATIVE_PIXMAP_KHR, imported, nullptr); // We can already close gbm handle gbm_bo_destroy(imported); close(gbmHandle); if (image == EGL_NO_IMAGE_KHR) { - qCritical() << "Error creating EGLImageKHR" << formatGLError(glGetError()); + qCWarning(XdgDesktopPortalKdeScreenCast) << "Failed to process buffer: Error creating EGLImageKHR - " << formatGLError(glGetError()); return; } // create GL 2D texture for framebuffer GLuint texture; glGenTextures(1, &texture); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glBindTexture(GL_TEXTURE_2D, texture); glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image); // bind framebuffer to copy pixels from GLuint framebuffer; glGenFramebuffers(1, &framebuffer); glBindFramebuffer(GL_FRAMEBUFFER, framebuffer); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0); const GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); if (status != GL_FRAMEBUFFER_COMPLETE) { - qCritical() << "glCheckFramebufferStatus failed:" << formatGLError(glGetError()); + qCWarning(XdgDesktopPortalKdeScreenCast) << "Failed to process buffer: glCheckFramebufferStatus failed - " << formatGLError(glGetError()); glDeleteTextures(1, &texture); glDeleteFramebuffers(1, &framebuffer); eglDestroyImageKHR(m_egl.display, image); return; } auto capture = new QImage(QSize(width, height), QImage::Format_RGBA8888); glViewport(0, 0, width, height); glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, capture->bits()); if (m_stream->recordFrame(capture->bits())) { m_lastFrameTime = QDateTime::currentDateTime(); } glDeleteTextures(1, &texture); glDeleteFramebuffers(1, &framebuffer); eglDestroyImageKHR(m_egl.display, image); delete capture; } void ScreenCastPortal::setupRegistry() { m_queue = new KWayland::Client::EventQueue(this); m_queue->setup(m_connection); m_registry = new KWayland::Client::Registry(this); connect(m_registry, &KWayland::Client::Registry::outputAnnounced, this, &ScreenCastPortal::addOutput); connect(m_registry, &KWayland::Client::Registry::outputRemoved, this, &ScreenCastPortal::removeOutput); connect(m_registry, &KWayland::Client::Registry::interfacesAnnounced, this, [this] { m_registryInitialized = true; qCDebug(XdgDesktopPortalKdeScreenCast) << "Registry initialized"; }); m_registry->create(m_connection); m_registry->setEventQueue(m_queue); m_registry->setup(); } void ScreenCastPortal::stopStreaming() { if (m_streamingEnabled) { qCDebug(XdgDesktopPortalKdeScreenCast) << "Stop streaming"; m_remoteAccessManager->release(); m_remoteAccessManager->destroy(); m_streamingEnabled = false; qDeleteAll(m_bindOutputs); m_bindOutputs.clear(); delete m_stream; m_stream = nullptr; } }