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Diffstat (limited to 'src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp')
| -rw-r--r-- | src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp b/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp new file mode 100644 index 0000000000..a2e1ac3832 --- /dev/null +++ b/src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp @@ -0,0 +1,306 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qeglfsdeviceintegration.h" +#include <QtPlatformSupport/private/qeglconvenience_p.h> +#include <QtPlatformSupport/private/qeglplatformcursor_p.h> +#include <QGuiApplication> +#include <QScreen> +#include <QDir> +#include <QRegularExpression> +#include <QLoggingCategory> + +#if defined(Q_OS_LINUX) +#include <fcntl.h> +#include <unistd.h> +#include <linux/fb.h> +#include <sys/ioctl.h> +#endif + +#include <private/qfactoryloader_p.h> +#include <private/qcore_unix_p.h> + +QT_BEGIN_NAMESPACE + +Q_LOGGING_CATEGORY(qLcEglDevDebug, "qt.qpa.egldeviceintegration") + +#ifndef QT_NO_LIBRARY + +Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, + (QEGLDeviceIntegrationFactoryInterface_iid, QLatin1String("/egldeviceintegrations"), Qt::CaseInsensitive)) + +Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, directLoader, + (QEGLDeviceIntegrationFactoryInterface_iid, QLatin1String(""), Qt::CaseInsensitive)) + +static inline QEGLDeviceIntegration *loadIntegration(QFactoryLoader *loader, const QString &key) +{ + const int index = loader->indexOf(key); + if (index != -1) { + QObject *plugin = loader->instance(index); + if (QEGLDeviceIntegrationPlugin *factory = qobject_cast<QEGLDeviceIntegrationPlugin *>(plugin)) { + if (QEGLDeviceIntegration *result = factory->create()) + return result; + } + } + return Q_NULLPTR; +} + +#endif // QT_NO_LIBRARY + +QStringList QEGLDeviceIntegrationFactory::keys(const QString &pluginPath) +{ +#ifndef QT_NO_LIBRARY + QStringList list; + if (!pluginPath.isEmpty()) { + QCoreApplication::addLibraryPath(pluginPath); + list = directLoader()->keyMap().values(); + if (!list.isEmpty()) { + const QString postFix = QStringLiteral(" (from ") + + QDir::toNativeSeparators(pluginPath) + + QLatin1Char(')'); + const QStringList::iterator end = list.end(); + for (QStringList::iterator it = list.begin(); it != end; ++it) + (*it).append(postFix); + } + } + list.append(loader()->keyMap().values()); + qCDebug(qLcEglDevDebug) << "EGL device integration plugin keys:" << list; + return list; +#else + return QStringList(); +#endif +} + +QEGLDeviceIntegration *QEGLDeviceIntegrationFactory::create(const QString &key, const QString &pluginPath) +{ + QEGLDeviceIntegration *integration = Q_NULLPTR; +#ifndef QT_NO_LIBRARY + if (!pluginPath.isEmpty()) { + QCoreApplication::addLibraryPath(pluginPath); + integration = loadIntegration(directLoader(), key); + } + if (!integration) + integration = loadIntegration(loader(), key); + if (integration) + qCDebug(qLcEglDevDebug) << "Using EGL device integration" << key; + else + qCWarning(qLcEglDevDebug) << "Failed to load EGL device integration" << key; +#endif + return integration; +} + +static int framebuffer = -1; + +QByteArray QEGLDeviceIntegration::fbDeviceName() const +{ + QByteArray fbDev = qgetenv("QT_QPA_EGLFS_FB"); + if (fbDev.isEmpty()) + fbDev = QByteArrayLiteral("/dev/fb0"); + + return fbDev; +} + +int QEGLDeviceIntegration::framebufferIndex() const +{ + int fbIndex = 0; +#ifndef QT_NO_REGULAREXPRESSION + QRegularExpression fbIndexRx(QLatin1String("fb(\\d+)")); + QRegularExpressionMatch match = fbIndexRx.match(QString::fromLocal8Bit(fbDeviceName())); + if (match.hasMatch()) + fbIndex = match.captured(1).toInt(); +#endif + return fbIndex; +} + +void QEGLDeviceIntegration::platformInit() +{ + QByteArray fbDev = fbDeviceName(); + + framebuffer = qt_safe_open(fbDev, O_RDONLY); + + if (framebuffer == -1) { + qWarning("EGLFS: Failed to open %s", fbDev.constData()); + qFatal("EGLFS: Can't continue without a display"); + } +} + +void QEGLDeviceIntegration::platformDestroy() +{ + if (framebuffer != -1) + close(framebuffer); +} + +EGLNativeDisplayType QEGLDeviceIntegration::platformDisplay() const +{ + return EGL_DEFAULT_DISPLAY; +} + +bool QEGLDeviceIntegration::usesDefaultScreen() +{ + return true; +} + +void QEGLDeviceIntegration::screenInit() +{ + // Nothing to do here. Called only when usesDefaultScreen is false. +} + +void QEGLDeviceIntegration::screenDestroy() +{ + while (!qApp->screens().isEmpty()) + delete qApp->screens().last()->handle(); +} + +QSizeF QEGLDeviceIntegration::physicalScreenSize() const +{ + return q_physicalScreenSizeFromFb(framebuffer, screenSize()); +} + +QSize QEGLDeviceIntegration::screenSize() const +{ + return q_screenSizeFromFb(framebuffer); +} + +QDpi QEGLDeviceIntegration::logicalDpi() const +{ + QSizeF ps = physicalScreenSize(); + QSize s = screenSize(); + + return QDpi(25.4 * s.width() / ps.width(), + 25.4 * s.height() / ps.height()); +} + +Qt::ScreenOrientation QEGLDeviceIntegration::nativeOrientation() const +{ + return Qt::PrimaryOrientation; +} + +Qt::ScreenOrientation QEGLDeviceIntegration::orientation() const +{ + return Qt::PrimaryOrientation; +} + +int QEGLDeviceIntegration::screenDepth() const +{ + return q_screenDepthFromFb(framebuffer); +} + +QImage::Format QEGLDeviceIntegration::screenFormat() const +{ + return screenDepth() == 16 ? QImage::Format_RGB16 : QImage::Format_RGB32; +} + +QSurfaceFormat QEGLDeviceIntegration::surfaceFormatFor(const QSurfaceFormat &inputFormat) const +{ + QSurfaceFormat format = inputFormat; + + static const bool force888 = qEnvironmentVariableIntValue("QT_QPA_EGLFS_FORCE888"); + if (force888) { + format.setRedBufferSize(8); + format.setGreenBufferSize(8); + format.setBlueBufferSize(8); + } + + return format; +} + +bool QEGLDeviceIntegration::filterConfig(EGLDisplay, EGLConfig) const +{ + return true; +} + +EGLNativeWindowType QEGLDeviceIntegration::createNativeWindow(QPlatformWindow *platformWindow, + const QSize &size, + const QSurfaceFormat &format) +{ + Q_UNUSED(platformWindow); + Q_UNUSED(size); + Q_UNUSED(format); + return 0; +} + +EGLNativeWindowType QEGLDeviceIntegration::createNativeOffscreenWindow(const QSurfaceFormat &format) +{ + Q_UNUSED(format); + return 0; +} + +void QEGLDeviceIntegration::destroyNativeWindow(EGLNativeWindowType window) +{ + Q_UNUSED(window); +} + +bool QEGLDeviceIntegration::hasCapability(QPlatformIntegration::Capability cap) const +{ + Q_UNUSED(cap); + return false; +} + +QPlatformCursor *QEGLDeviceIntegration::createCursor(QPlatformScreen *screen) const +{ + return new QEGLPlatformCursor(screen); +} + +void QEGLDeviceIntegration::waitForVSync(QPlatformSurface *surface) const +{ + Q_UNUSED(surface); + +#if defined(FBIO_WAITFORVSYNC) + static const bool forceSync = qEnvironmentVariableIntValue("QT_QPA_EGLFS_FORCEVSYNC"); + if (forceSync && framebuffer != -1) { + int arg = 0; + if (ioctl(framebuffer, FBIO_WAITFORVSYNC, &arg) == -1) + qWarning("Could not wait for vsync."); + } +#endif +} + +void QEGLDeviceIntegration::presentBuffer(QPlatformSurface *surface) +{ + Q_UNUSED(surface); +} + +bool QEGLDeviceIntegration::supportsPBuffers() const +{ + return true; +} + +QT_END_NAMESPACE |