diff options
Diffstat (limited to 'src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsintegration.cpp')
| -rw-r--r-- | src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsintegration.cpp | 1155 |
1 files changed, 1155 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsintegration.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsintegration.cpp new file mode 100644 index 0000000000..5a9d3db236 --- /dev/null +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsintegration.cpp @@ -0,0 +1,1155 @@ +/**************************************************************************** +** +** 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 "qeglfskmsintegration.h" +#include "qeglfsintegration.h" +#include "qeglfsscreen.h" + +#include <QtPlatformSupport/private/qeglplatformcursor_p.h> +#include <QtPlatformSupport/private/qdevicediscovery_p.h> +#include <QtCore/private/qcore_unix_p.h> +#include <QtCore/QScopedPointer> +#include <QtCore/QJsonDocument> +#include <QtCore/QJsonObject> +#include <QtCore/QJsonArray> +#include <QtCore/QLoggingCategory> +#include <QtGui/qpa/qplatformwindow.h> +#include <QtGui/qpa/qplatformcursor.h> +#include <QtGui/QPainter> +#include <QtGui/private/qguiapplication_p.h> + +#include <xf86drm.h> +#include <xf86drmMode.h> +#include <gbm.h> + +#ifndef DRM_CAP_CURSOR_WIDTH +#define DRM_CAP_CURSOR_WIDTH 0x8 +#endif + +#ifndef DRM_CAP_CURSOR_HEIGHT +#define DRM_CAP_CURSOR_HEIGHT 0x9 +#endif + +#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0]) + +QT_BEGIN_NAMESPACE + +Q_LOGGING_CATEGORY(qLcEglfsKmsDebug, "qt.qpa.eglfs.kms") + +class QEglFSKmsCursor; +class QEglFSKmsScreen; + +enum OutputConfiguration { + OutputConfigOff, + OutputConfigPreferred, + OutputConfigCurrent, + OutputConfigMode, + OutputConfigModeline +}; + +struct QEglFSKmsOutput { + QString name; + uint32_t connector_id; + uint32_t crtc_id; + QSizeF physical_size; + int mode; // index of selected mode in list below + bool mode_set; + drmModeCrtcPtr saved_crtc; + QList<drmModeModeInfo> modes; +}; + +class QEglFSKmsDevice +{ + Q_DISABLE_COPY(QEglFSKmsDevice) + + QEglFSKmsIntegration *m_integration; + QString m_path; + int m_dri_fd; + gbm_device *m_gbm_device; + + quint32 m_crtc_allocator; + quint32 m_connector_allocator; + + int crtcForConnector(drmModeResPtr resources, drmModeConnectorPtr connector); + QEglFSKmsScreen *screenForConnector(drmModeResPtr resources, drmModeConnectorPtr connector, QPoint pos); + + static void pageFlipHandler(int fd, + unsigned int sequence, + unsigned int tv_sec, + unsigned int tv_usec, + void *user_data); +public: + QEglFSKmsDevice(QEglFSKmsIntegration *integration, const QString &path); + + bool open(); + void close(); + + void createScreens(); + + gbm_device *device() const; + int fd() const; + + void handleDrmEvent(); +}; + +class QEglFSKmsScreen : public QEglFSScreen +{ + QEglFSKmsIntegration *m_integration; + QEglFSKmsDevice *m_device; + gbm_surface *m_gbm_surface; + + gbm_bo *m_gbm_bo_current; + gbm_bo *m_gbm_bo_next; + + QEglFSKmsOutput m_output; + QPoint m_pos; + QScopedPointer<QEglFSKmsCursor> m_cursor; + + struct FrameBuffer { + FrameBuffer() : fb(0) {} + uint32_t fb; + }; + static void bufferDestroyedHandler(gbm_bo *bo, void *data); + FrameBuffer *framebufferForBufferObject(gbm_bo *bo); + + static QMutex m_waitForFlipMutex; + +public: + QEglFSKmsScreen(QEglFSKmsIntegration *integration, + QEglFSKmsDevice *device, + QEglFSKmsOutput output, + QPoint position); + ~QEglFSKmsScreen(); + + QRect geometry() const Q_DECL_OVERRIDE; + int depth() const Q_DECL_OVERRIDE; + QImage::Format format() const Q_DECL_OVERRIDE; + + QSizeF physicalSize() const Q_DECL_OVERRIDE; + QDpi logicalDpi() const Q_DECL_OVERRIDE; + Qt::ScreenOrientation nativeOrientation() const Q_DECL_OVERRIDE; + Qt::ScreenOrientation orientation() const Q_DECL_OVERRIDE; + + QString name() const Q_DECL_OVERRIDE; + + QPlatformCursor *cursor() const Q_DECL_OVERRIDE; + + QEglFSKmsDevice *device() const { return m_device; } + + gbm_surface *surface() const { return m_gbm_surface; } + gbm_surface *createSurface(); + void destroySurface(); + + void waitForFlip(); + void flip(); + void flipFinished(); + + QEglFSKmsOutput &output() { return m_output; } + void restoreMode(); +}; + +QMutex QEglFSKmsScreen::m_waitForFlipMutex; + +class QEglFSKmsCursor : public QPlatformCursor +{ + Q_OBJECT +public: + QEglFSKmsCursor(QEglFSKmsScreen *screen); + ~QEglFSKmsCursor(); + + // input methods + void pointerEvent(const QMouseEvent & event) Q_DECL_OVERRIDE; +#ifndef QT_NO_CURSOR + void changeCursor(QCursor * windowCursor, QWindow * window) Q_DECL_OVERRIDE; +#endif + QPoint pos() const Q_DECL_OVERRIDE; + void setPos(const QPoint &pos) Q_DECL_OVERRIDE; + +private: + void initCursorAtlas(); + + QEglFSKmsScreen *m_screen; + QSize m_cursorSize; + gbm_bo *m_bo; + QPoint m_pos; + QPlatformCursorImage m_cursorImage; + bool m_visible; + + // cursor atlas information + struct CursorAtlas { + CursorAtlas() : cursorsPerRow(0), cursorWidth(0), cursorHeight(0) { } + int cursorsPerRow; + int width, height; // width and height of the atlas + int cursorWidth, cursorHeight; // width and height of cursors inside the atlas + QList<QPoint> hotSpots; + QImage image; + } m_cursorAtlas; +}; + +QEglFSKmsIntegration::QEglFSKmsIntegration() + : m_device(Q_NULLPTR) + , m_hwCursor(true) + , m_pbuffers(false) +{} + +void QEglFSKmsIntegration::platformInit() +{ + loadConfig(); + + if (!m_devicePath.isEmpty()) { + qCDebug(qLcEglfsKmsDebug) << "Using DRM device" << m_devicePath << "specified in config file"; + } else { + + QDeviceDiscovery *d = QDeviceDiscovery::create(QDeviceDiscovery::Device_VideoMask); + QStringList devices = d->scanConnectedDevices(); + qCDebug(qLcEglfsKmsDebug) << "Found the following video devices:" << devices; + d->deleteLater(); + + if (devices.isEmpty()) + qFatal("Could not find DRM device!"); + + m_devicePath = devices.first(); + qCDebug(qLcEglfsKmsDebug) << "Using" << m_devicePath; + } + + m_device = new QEglFSKmsDevice(this, m_devicePath); + if (!m_device->open()) + qFatal("Could not open device %s - aborting!", qPrintable(m_devicePath)); +} + +void QEglFSKmsIntegration::platformDestroy() +{ + m_device->close(); + delete m_device; + m_device = Q_NULLPTR; +} + +EGLNativeDisplayType QEglFSKmsIntegration::platformDisplay() const +{ + Q_ASSERT(m_device); + return reinterpret_cast<EGLNativeDisplayType>(m_device->device()); +} + +bool QEglFSKmsIntegration::usesDefaultScreen() +{ + return false; +} + +void QEglFSKmsIntegration::screenInit() +{ + m_device->createScreens(); +} + +QSurfaceFormat QEglFSKmsIntegration::surfaceFormatFor(const QSurfaceFormat &inputFormat) const +{ + QSurfaceFormat format(inputFormat); + format.setRenderableType(QSurfaceFormat::OpenGLES); + format.setSwapBehavior(QSurfaceFormat::DoubleBuffer); + format.setRedBufferSize(8); + format.setGreenBufferSize(8); + format.setBlueBufferSize(8); + return format; +} + +EGLNativeWindowType QEglFSKmsIntegration::createNativeWindow(QPlatformWindow *platformWindow, + const QSize &size, + const QSurfaceFormat &format) +{ + Q_UNUSED(size); + Q_UNUSED(format); + + QEglFSKmsScreen *screen = static_cast<QEglFSKmsScreen *>(platformWindow->screen()); + if (screen->surface()) { + qWarning("Only single window per screen supported!"); + return 0; + } + + return reinterpret_cast<EGLNativeWindowType>(screen->createSurface()); +} + +EGLNativeWindowType QEglFSKmsIntegration::createNativeOffscreenWindow(const QSurfaceFormat &format) +{ + Q_UNUSED(format); + Q_ASSERT(m_device); + + qCDebug(qLcEglfsKmsDebug) << "Creating native off screen window"; + gbm_surface *surface = gbm_surface_create(m_device->device(), + 1, 1, + GBM_FORMAT_XRGB8888, + GBM_BO_USE_RENDERING); + + return reinterpret_cast<EGLNativeWindowType>(surface); +} + +void QEglFSKmsIntegration::destroyNativeWindow(EGLNativeWindowType window) +{ + gbm_surface *surface = reinterpret_cast<gbm_surface *>(window); + gbm_surface_destroy(surface); +} + +bool QEglFSKmsIntegration::hasCapability(QPlatformIntegration::Capability cap) const +{ + switch (cap) { + case QPlatformIntegration::ThreadedPixmaps: + case QPlatformIntegration::OpenGL: + case QPlatformIntegration::ThreadedOpenGL: + return true; + default: + return false; + } +} + +QPlatformCursor *QEglFSKmsIntegration::createCursor(QPlatformScreen *screen) const +{ + if (m_hwCursor) + return Q_NULLPTR; + else + return new QEGLPlatformCursor(screen); +} + +void QEglFSKmsIntegration::waitForVSync(QPlatformSurface *surface) const +{ + QWindow *window = static_cast<QWindow *>(surface->surface()); + QEglFSKmsScreen *screen = static_cast<QEglFSKmsScreen *>(window->screen()->handle()); + + screen->waitForFlip(); +} + +void QEglFSKmsIntegration::presentBuffer(QPlatformSurface *surface) +{ + QWindow *window = static_cast<QWindow *>(surface->surface()); + QEglFSKmsScreen *screen = static_cast<QEglFSKmsScreen *>(window->screen()->handle()); + + screen->flip(); +} + +bool QEglFSKmsIntegration::supportsPBuffers() const +{ + return m_pbuffers; +} + +bool QEglFSKmsIntegration::hwCursor() const +{ + return m_hwCursor; +} + +QMap<QString, QVariantMap> QEglFSKmsIntegration::outputSettings() const +{ + return m_outputSettings; +} + +void QEglFSKmsIntegration::loadConfig() +{ + static QByteArray json = qgetenv("QT_QPA_EGLFS_KMS_CONFIG"); + if (json.isEmpty()) + return; + + qCDebug(qLcEglfsKmsDebug) << "Loading KMS setup from" << json; + + QFile file(QString::fromUtf8(json)); + if (!file.open(QFile::ReadOnly)) { + qCDebug(qLcEglfsKmsDebug) << "Could not open config file" + << json << "for reading"; + return; + } + + QJsonDocument doc = QJsonDocument::fromJson(file.readAll()); + if (!doc.isObject()) { + qCDebug(qLcEglfsKmsDebug) << "Invalid config file" << json + << "- no top-level JSON object"; + return; + } + + QJsonObject object = doc.object(); + + m_hwCursor = object.value("hwcursor").toBool(m_hwCursor); + m_pbuffers = object.value("pbuffers").toBool(m_pbuffers); + m_devicePath = object.value("device").toString(); + + QJsonArray outputs = object.value("outputs").toArray(); + for (int i = 0; i < outputs.size(); i++) { + QVariantMap outputSettings = outputs.at(i).toObject().toVariantMap(); + + if (outputSettings.contains("name")) { + QString name = outputSettings.value("name").toString(); + + if (m_outputSettings.contains(name)) { + qCDebug(qLcEglfsKmsDebug) << "Output" << name << "configured multiple times!"; + } + + m_outputSettings.insert(name, outputSettings); + } + } + + qCDebug(qLcEglfsKmsDebug) << "Configuration:\n" + << "\thwcursor:" << m_hwCursor << "\n" + << "\tpbuffers:" << m_pbuffers << "\n" + << "\toutputs:" << m_outputSettings; +} + +QEglFSKmsCursor::QEglFSKmsCursor(QEglFSKmsScreen *screen) + : m_screen(screen) + , m_cursorSize(64, 64) // 64x64 is the old standard size, we now try to query the real size below + , m_bo(Q_NULLPTR) + , m_cursorImage(0, 0, 0, 0, 0, 0) + , m_visible(true) +{ + uint64_t width, height; + if ((drmGetCap(m_screen->device()->fd(), DRM_CAP_CURSOR_WIDTH, &width) == 0) + && (drmGetCap(m_screen->device()->fd(), DRM_CAP_CURSOR_HEIGHT, &height) == 0)) { + m_cursorSize.setWidth(width); + m_cursorSize.setHeight(height); + } + + m_bo = gbm_bo_create(m_screen->device()->device(), m_cursorSize.width(), m_cursorSize.height(), + GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE); + if (!m_bo) { + qWarning("Could not create buffer for cursor!"); + } else { + initCursorAtlas(); + } + + drmModeMoveCursor(m_screen->device()->fd(), m_screen->output().crtc_id, 0, 0); +} + +QEglFSKmsCursor::~QEglFSKmsCursor() +{ + drmModeSetCursor(m_screen->device()->fd(), m_screen->output().crtc_id, 0, 0, 0); + drmModeMoveCursor(m_screen->device()->fd(), m_screen->output().crtc_id, 0, 0); + + gbm_bo_destroy(m_bo); + m_bo = Q_NULLPTR; +} + +void QEglFSKmsCursor::pointerEvent(const QMouseEvent &event) +{ + setPos(event.screenPos().toPoint()); +} + +#ifndef QT_NO_CURSOR +void QEglFSKmsCursor::changeCursor(QCursor *windowCursor, QWindow *window) +{ + Q_UNUSED(window); + + if (!m_visible) + return; + + const Qt::CursorShape newShape = windowCursor ? windowCursor->shape() : Qt::ArrowCursor; + if (newShape == Qt::BitmapCursor) { + m_cursorImage.set(windowCursor->pixmap().toImage(), + windowCursor->hotSpot().x(), + windowCursor->hotSpot().y()); + } else { + // Standard cursor, look up in atlas + const int width = m_cursorAtlas.cursorWidth; + const int height = m_cursorAtlas.cursorHeight; + const qreal ws = (qreal)m_cursorAtlas.cursorWidth / m_cursorAtlas.width; + const qreal hs = (qreal)m_cursorAtlas.cursorHeight / m_cursorAtlas.height; + + QRect textureRect(ws * (newShape % m_cursorAtlas.cursorsPerRow) * m_cursorAtlas.width, + hs * (newShape / m_cursorAtlas.cursorsPerRow) * m_cursorAtlas.height, + width, + height); + QPoint hotSpot = m_cursorAtlas.hotSpots[newShape]; + m_cursorImage.set(m_cursorAtlas.image.copy(textureRect), + hotSpot.x(), + hotSpot.y()); + } + + if (m_cursorImage.image()->width() > m_cursorSize.width() || m_cursorImage.image()->height() > m_cursorSize.height()) + qWarning("Cursor larger than %dx%d, cursor will be clipped.", m_cursorSize.width(), m_cursorSize.height()); + + QImage cursorImage(m_cursorSize, QImage::Format_ARGB32); + cursorImage.fill(Qt::transparent); + + QPainter painter; + painter.begin(&cursorImage); + painter.drawImage(0, 0, *m_cursorImage.image()); + painter.end(); + + gbm_bo_write(m_bo, cursorImage.constBits(), cursorImage.byteCount()); + + uint32_t handle = gbm_bo_get_handle(m_bo).u32; + int status = drmModeSetCursor(m_screen->device()->fd(), m_screen->output().crtc_id, handle, + m_cursorSize.width(), m_cursorSize.height()); + if (status != 0) + qWarning("Could not set cursor: %d", status); +} +#endif // QT_NO_CURSOR + +QPoint QEglFSKmsCursor::pos() const +{ + return m_pos; +} + +void QEglFSKmsCursor::setPos(const QPoint &pos) +{ + QPoint adjustedPos = pos - m_cursorImage.hotspot(); + int ret = drmModeMoveCursor(m_screen->device()->fd(), m_screen->output().crtc_id, adjustedPos.x(), adjustedPos.y()); + if (ret == 0) { + m_pos = pos; + } else { + qWarning("Failed to move cursor: %d", ret); + } +} + +void QEglFSKmsCursor::initCursorAtlas() +{ + static QByteArray json = qgetenv("QT_QPA_EGLFS_CURSOR"); + if (json.isEmpty()) + json = ":/cursor.json"; + + qCDebug(qLcEglfsKmsDebug) << "Initializing cursor atlas from" << json; + + QFile file(QString::fromUtf8(json)); + if (!file.open(QFile::ReadOnly)) { + drmModeSetCursor(m_screen->device()->fd(), m_screen->output().crtc_id, 0, 0, 0); + drmModeMoveCursor(m_screen->device()->fd(), m_screen->output().crtc_id, 0, 0); + m_visible = false; + return; + } + + QJsonDocument doc = QJsonDocument::fromJson(file.readAll()); + QJsonObject object = doc.object(); + + QString atlas = object.value(QLatin1String("image")).toString(); + Q_ASSERT(!atlas.isEmpty()); + + const int cursorsPerRow = object.value(QLatin1String("cursorsPerRow")).toDouble(); + Q_ASSERT(cursorsPerRow); + m_cursorAtlas.cursorsPerRow = cursorsPerRow; + + const QJsonArray hotSpots = object.value(QLatin1String("hotSpots")).toArray(); + Q_ASSERT(hotSpots.count() == Qt::LastCursor + 1); + for (int i = 0; i < hotSpots.count(); i++) { + QPoint hotSpot(hotSpots[i].toArray()[0].toDouble(), hotSpots[i].toArray()[1].toDouble()); + m_cursorAtlas.hotSpots << hotSpot; + } + + QImage image = QImage(atlas).convertToFormat(QImage::Format_ARGB32); + m_cursorAtlas.cursorWidth = image.width() / m_cursorAtlas.cursorsPerRow; + m_cursorAtlas.cursorHeight = image.height() / ((Qt::LastCursor + cursorsPerRow) / cursorsPerRow); + m_cursorAtlas.width = image.width(); + m_cursorAtlas.height = image.height(); + m_cursorAtlas.image = image; +} + +void QEglFSKmsScreen::bufferDestroyedHandler(gbm_bo *bo, void *data) +{ + FrameBuffer *fb = static_cast<FrameBuffer *>(data); + + if (fb->fb) { + gbm_device *device = gbm_bo_get_device(bo); + drmModeRmFB(gbm_device_get_fd(device), fb->fb); + } + + delete fb; +} + +QEglFSKmsScreen::FrameBuffer *QEglFSKmsScreen::framebufferForBufferObject(gbm_bo *bo) +{ + { + FrameBuffer *fb = static_cast<FrameBuffer *>(gbm_bo_get_user_data(bo)); + if (fb) + return fb; + } + + uint32_t width = gbm_bo_get_width(bo); + uint32_t height = gbm_bo_get_height(bo); + uint32_t stride = gbm_bo_get_stride(bo); + uint32_t handle = gbm_bo_get_handle(bo).u32; + + QScopedPointer<FrameBuffer> fb(new FrameBuffer); + + int ret = drmModeAddFB(m_device->fd(), width, height, 24, 32, + stride, handle, &fb->fb); + + if (ret) { + qWarning("Failed to create KMS FB!"); + return Q_NULLPTR; + } + + gbm_bo_set_user_data(bo, fb.data(), bufferDestroyedHandler); + return fb.take(); + +} + +QEglFSKmsScreen::QEglFSKmsScreen(QEglFSKmsIntegration *integration, + QEglFSKmsDevice *device, + QEglFSKmsOutput output, + QPoint position) + : QEglFSScreen(eglGetDisplay(reinterpret_cast<EGLNativeDisplayType>(device->device()))) + , m_integration(integration) + , m_device(device) + , m_gbm_surface(Q_NULLPTR) + , m_gbm_bo_current(Q_NULLPTR) + , m_gbm_bo_next(Q_NULLPTR) + , m_output(output) + , m_pos(position) + , m_cursor(Q_NULLPTR) +{ +} + +QEglFSKmsScreen::~QEglFSKmsScreen() +{ + restoreMode(); +} + +QRect QEglFSKmsScreen::geometry() const +{ + const int mode = m_output.mode; + return QRect(m_pos.x(), m_pos.y(), + m_output.modes[mode].hdisplay, + m_output.modes[mode].vdisplay); +} + +int QEglFSKmsScreen::depth() const +{ + return 32; +} + +QImage::Format QEglFSKmsScreen::format() const +{ + return QImage::Format_RGB32; +} + +QSizeF QEglFSKmsScreen::physicalSize() const +{ + return m_output.physical_size; +} + +QDpi QEglFSKmsScreen::logicalDpi() const +{ + QSizeF ps = physicalSize(); + QSize s = geometry().size(); + + if (ps.isValid() && s.isValid()) + return QDpi(25.4 * s.width() / ps.width(), + 25.4 * s.height() / ps.height()); + else + return QDpi(100, 100); +} + +Qt::ScreenOrientation QEglFSKmsScreen::nativeOrientation() const +{ + return Qt::PrimaryOrientation; +} + +Qt::ScreenOrientation QEglFSKmsScreen::orientation() const +{ + return Qt::PrimaryOrientation; +} + +QString QEglFSKmsScreen::name() const +{ + return m_output.name; +} + +QPlatformCursor *QEglFSKmsScreen::cursor() const +{ + if (m_integration->hwCursor()) { + if (m_cursor.isNull()) { + QEglFSKmsScreen *that = const_cast<QEglFSKmsScreen *>(this); + that->m_cursor.reset(new QEglFSKmsCursor(that)); + } + + return m_cursor.data(); + } else { + return QEglFSScreen::cursor(); + } +} + +gbm_surface *QEglFSKmsScreen::createSurface() +{ + if (!m_gbm_surface) { + qCDebug(qLcEglfsKmsDebug) << "Creating window for screen" << name(); + m_gbm_surface = gbm_surface_create(m_device->device(), + geometry().width(), + geometry().height(), + GBM_FORMAT_XRGB8888, + GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING); + } + return m_gbm_surface; +} + +void QEglFSKmsScreen::destroySurface() +{ + if (m_gbm_bo_current) { + gbm_bo_destroy(m_gbm_bo_current); + m_gbm_bo_current = Q_NULLPTR; + } + + if (m_gbm_bo_next) { + gbm_bo_destroy(m_gbm_bo_next); + m_gbm_bo_next = Q_NULLPTR; + } + + if (m_gbm_surface) { + gbm_surface_destroy(m_gbm_surface); + m_gbm_surface = Q_NULLPTR; + } +} + +void QEglFSKmsScreen::waitForFlip() +{ + // Don't lock the mutex unless we actually need to + if (!m_gbm_bo_next) + return; + + QMutexLocker lock(&m_waitForFlipMutex); + while (m_gbm_bo_next) + m_device->handleDrmEvent(); +} + +void QEglFSKmsScreen::flip() +{ + if (!m_gbm_surface) { + qWarning("Cannot sync before platform init!"); + return; + } + + m_gbm_bo_next = gbm_surface_lock_front_buffer(m_gbm_surface); + if (!m_gbm_bo_next) { + qWarning("Could not lock GBM surface front buffer!"); + return; + } + + FrameBuffer *fb = framebufferForBufferObject(m_gbm_bo_next); + + if (!m_output.mode_set) { + int ret = drmModeSetCrtc(m_device->fd(), + m_output.crtc_id, + fb->fb, + 0, 0, + &m_output.connector_id, 1, + &m_output.modes[m_output.mode]); + + if (ret) + qErrnoWarning("Could not set DRM mode!"); + else + m_output.mode_set = true; + } + + int ret = drmModePageFlip(m_device->fd(), + m_output.crtc_id, + fb->fb, + DRM_MODE_PAGE_FLIP_EVENT, + this); + if (ret) { + qErrnoWarning("Could not queue DRM page flip!"); + gbm_surface_release_buffer(m_gbm_surface, m_gbm_bo_next); + m_gbm_bo_next = Q_NULLPTR; + } +} + +void QEglFSKmsScreen::flipFinished() +{ + if (m_gbm_bo_current) + gbm_surface_release_buffer(m_gbm_surface, + m_gbm_bo_current); + + m_gbm_bo_current = m_gbm_bo_next; + m_gbm_bo_next = Q_NULLPTR; +} + +void QEglFSKmsScreen::restoreMode() +{ + if (m_output.mode_set && m_output.saved_crtc) { + drmModeSetCrtc(m_device->fd(), + m_output.saved_crtc->crtc_id, + m_output.saved_crtc->buffer_id, + 0, 0, + &m_output.connector_id, 1, + &m_output.saved_crtc->mode); + + drmModeFreeCrtc(m_output.saved_crtc); + m_output.saved_crtc = Q_NULLPTR; + + m_output.mode_set = false; + } +} + +int QEglFSKmsDevice::crtcForConnector(drmModeResPtr resources, drmModeConnectorPtr connector) +{ + for (int i = 0; i < connector->count_encoders; i++) { + drmModeEncoderPtr encoder = drmModeGetEncoder(m_dri_fd, connector->encoders[i]); + if (!encoder) { + qWarning("Failed to get encoder"); + continue; + } + + quint32 possibleCrtcs = encoder->possible_crtcs; + drmModeFreeEncoder(encoder); + + for (int j = 0; j < resources->count_crtcs; j++) { + bool isPossible = possibleCrtcs & (1 << j); + bool isAvailable = !(m_crtc_allocator & 1 << resources->crtcs[j]); + + if (isPossible && isAvailable) + return j; + } + } + + return -1; +} + +static const char * const connector_type_names[] = { + "None", + "VGA", + "DVI", + "DVI", + "DVI", + "Composite", + "TV", + "LVDS", + "CTV", + "DIN", + "DP", + "HDMI", + "HDMI", + "TV", + "eDP", +}; + +static QString nameForConnector(const drmModeConnectorPtr connector) +{ + QString connectorName = "UNKNOWN"; + + if (connector->connector_type < ARRAY_LENGTH(connector_type_names)) + connectorName = connector_type_names[connector->connector_type]; + + connectorName += QString::number(connector->connector_type_id); + + return connectorName; +} + +static bool parseModeline(const QString &s, drmModeModeInfoPtr mode) +{ + char hsync[16]; + char vsync[16]; + float fclock; + + mode->type = DRM_MODE_TYPE_USERDEF; + mode->hskew = 0; + mode->vscan = 0; + mode->vrefresh = 0; + mode->flags = 0; + + if (sscanf(qPrintable(s), "%f %hd %hd %hd %hd %hd %hd %hd %hd %15s %15s", + &fclock, + &mode->hdisplay, + &mode->hsync_start, + &mode->hsync_end, + &mode->htotal, + &mode->vdisplay, + &mode->vsync_start, + &mode->vsync_end, + &mode->vtotal, hsync, vsync) != 11) + return false; + + mode->clock = fclock * 1000; + + if (strcmp(hsync, "+hsync") == 0) + mode->flags |= DRM_MODE_FLAG_PHSYNC; + else if (strcmp(hsync, "-hsync") == 0) + mode->flags |= DRM_MODE_FLAG_NHSYNC; + else + return false; + + if (strcmp(vsync, "+vsync") == 0) + mode->flags |= DRM_MODE_FLAG_PVSYNC; + else if (strcmp(vsync, "-vsync") == 0) + mode->flags |= DRM_MODE_FLAG_NVSYNC; + else + return false; + + return true; +} + +QEglFSKmsScreen *QEglFSKmsDevice::screenForConnector(drmModeResPtr resources, drmModeConnectorPtr connector, QPoint pos) +{ + const QString connectorName = nameForConnector(connector); + + const int crtc = crtcForConnector(resources, connector); + if (crtc < 0) { + qWarning() << "No usable crtc/encoder pair for connector" << connectorName; + return Q_NULLPTR; + } + + OutputConfiguration configuration; + QSize configurationSize; + drmModeModeInfo configurationModeline; + + const QString mode = m_integration->outputSettings().value(connectorName).value("mode", "preferred").toString().toLower(); + if (mode == "off") { + configuration = OutputConfigOff; + } else if (mode == "preferred") { + configuration = OutputConfigPreferred; + } else if (mode == "current") { + configuration = OutputConfigCurrent; + } else if (sscanf(qPrintable(mode), "%dx%d", &configurationSize.rwidth(), &configurationSize.rheight()) == 2) { + configuration = OutputConfigMode; + } else if (parseModeline(mode, &configurationModeline)) { + configuration = OutputConfigModeline; + } else { + qWarning("Invalid mode \"%s\" for output %s", qPrintable(mode), qPrintable(connectorName)); + configuration = OutputConfigPreferred; + } + + const uint32_t crtc_id = resources->crtcs[crtc]; + + if (configuration == OutputConfigOff) { + qCDebug(qLcEglfsKmsDebug) << "Turning off output" << connectorName; + drmModeSetCrtc(m_dri_fd, crtc_id, 0, 0, 0, 0, 0, Q_NULLPTR); + return Q_NULLPTR; + } + + // Get the current mode on the current crtc + drmModeModeInfo crtc_mode; + memset(&crtc_mode, 0, sizeof crtc_mode); + if (drmModeEncoderPtr encoder = drmModeGetEncoder(m_dri_fd, connector->connector_id)) { + drmModeCrtcPtr crtc = drmModeGetCrtc(m_dri_fd, encoder->crtc_id); + drmModeFreeEncoder(encoder); + + if (!crtc) + return Q_NULLPTR; + + if (crtc->mode_valid) + crtc_mode = crtc->mode; + + drmModeFreeCrtc(crtc); + } + + QList<drmModeModeInfo> modes; + qCDebug(qLcEglfsKmsDebug) << connectorName << "mode count:" << connector->count_modes; + for (int i = 0; i < connector->count_modes; i++) { + const drmModeModeInfo &mode = connector->modes[i]; + qCDebug(qLcEglfsKmsDebug) << "mode" << i << mode.hdisplay << "x" << mode.vdisplay + << "@" << mode.vrefresh << "hz"; + modes << connector->modes[i]; + } + + int preferred = -1; + int current = -1; + int configured = -1; + int best = -1; + + for (int i = modes.size() - 1; i >= 0; i--) { + const drmModeModeInfo &m = modes.at(i); + + if (configuration == OutputConfigMode && + m.hdisplay == configurationSize.width() && + m.vdisplay == configurationSize.height()) { + configured = i; + } + + if (!memcmp(&crtc_mode, &m, sizeof m)) + current = i; + + if (m.type & DRM_MODE_TYPE_PREFERRED) + preferred = i; + + best = i; + } + + if (configuration == OutputConfigModeline) { + modes << configurationModeline; + configured = modes.size() - 1; + } + + if (current < 0 && crtc_mode.clock != 0) { + modes << crtc_mode; + current = mode.size() - 1; + } + + if (configuration == OutputConfigCurrent) + configured = current; + + int selected_mode = -1; + + if (configured >= 0) + selected_mode = configured; + else if (preferred >= 0) + selected_mode = preferred; + else if (current >= 0) + selected_mode = current; + else if (best >= 0) + selected_mode = best; + + if (selected_mode < 0) { + qWarning() << "No modes available for output" << connectorName; + return Q_NULLPTR; + } else { + int width = modes[selected_mode].hdisplay; + int height = modes[selected_mode].vdisplay; + int refresh = modes[selected_mode].vrefresh; + qCDebug(qLcEglfsKmsDebug) << "Selected mode" << selected_mode << ":" << width << "x" << height + << "@" << refresh << "hz for output" << connectorName; + } + + QEglFSKmsOutput output = { + connectorName, + connector->connector_id, + crtc_id, + QSizeF(connector->mmWidth, connector->mmHeight), + selected_mode, + false, + drmModeGetCrtc(m_dri_fd, crtc_id), + modes + }; + + m_crtc_allocator |= (1 << output.crtc_id); + m_connector_allocator |= (1 << output.connector_id); + + return new QEglFSKmsScreen(m_integration, this, output, pos); +} + +void QEglFSKmsDevice::pageFlipHandler(int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data) +{ + Q_UNUSED(fd); + Q_UNUSED(sequence); + Q_UNUSED(tv_sec); + Q_UNUSED(tv_usec); + + QEglFSKmsScreen *screen = static_cast<QEglFSKmsScreen *>(user_data); + screen->flipFinished(); +} + +QEglFSKmsDevice::QEglFSKmsDevice(QEglFSKmsIntegration *integration, const QString &path) + : m_integration(integration) + , m_path(path) + , m_dri_fd(-1) + , m_gbm_device(Q_NULLPTR) + , m_crtc_allocator(0) + , m_connector_allocator(0) +{ +} + +bool QEglFSKmsDevice::open() +{ + Q_ASSERT(m_dri_fd == -1); + Q_ASSERT(m_gbm_device == Q_NULLPTR); + + qCDebug(qLcEglfsKmsDebug) << "Opening device" << m_path; + m_dri_fd = qt_safe_open(m_path.toLocal8Bit().constData(), O_RDWR | O_CLOEXEC); + if (m_dri_fd == -1) { + qErrnoWarning("Could not open DRM device %s", qPrintable(m_path)); + return false; + } + + qCDebug(qLcEglfsKmsDebug) << "Creating GBM device for file descriptor" << m_dri_fd + << "obtained from" << m_path; + m_gbm_device = gbm_create_device(m_dri_fd); + if (!m_gbm_device) { + qErrnoWarning("Could not create GBM device"); + qt_safe_close(m_dri_fd); + m_dri_fd = -1; + return false; + } + + return true; +} + +void QEglFSKmsDevice::close() +{ + if (m_gbm_device) { + gbm_device_destroy(m_gbm_device); + m_gbm_device = Q_NULLPTR; + } + + if (m_dri_fd != -1) { + qt_safe_close(m_dri_fd); + m_dri_fd = -1; + } +} + +void QEglFSKmsDevice::createScreens() +{ + drmModeResPtr resources = drmModeGetResources(m_dri_fd); + if (!resources) { + qWarning("drmModeGetResources failed"); + return; + } + + QPoint pos(0, 0); + QEglFSIntegration *integration = static_cast<QEglFSIntegration *>(QGuiApplicationPrivate::platformIntegration()); + + for (int i = 0; i < resources->count_connectors; i++) { + drmModeConnectorPtr connector = drmModeGetConnector(m_dri_fd, resources->connectors[i]); + if (!connector) + continue; + + QEglFSKmsScreen *screen = screenForConnector(resources, connector, pos); + if (screen) { + integration->addScreen(screen); + pos.rx() += screen->geometry().width(); + } + + drmModeFreeConnector(connector); + } + + drmModeFreeResources(resources); +} + +gbm_device *QEglFSKmsDevice::device() const +{ + return m_gbm_device; +} + +int QEglFSKmsDevice::fd() const +{ + return m_dri_fd; +} + +void QEglFSKmsDevice::handleDrmEvent() +{ + drmEventContext drmEvent = { + DRM_EVENT_CONTEXT_VERSION, + Q_NULLPTR, // vblank handler + pageFlipHandler // page flip handler + }; + + drmHandleEvent(m_dri_fd, &drmEvent); +} + +QT_END_NAMESPACE + +#include "qeglfskmsintegration.moc" |