wl_eglstream_controller implementation for NVIDIA

This adds a new client buffer integration: wayland-eglstream-controller,
which contains the EGLStream logic from wayland-egl, and additionally
uses NVIDIA's wayland-eglstream-controller protocol to avoid the issue
where the stream is not ready at the time of first buffer attach.

This is not enabled by default. Can be used like this:
QT_WAYLAND_CLIENT_BUFFER_INTEGRATION=wayland-eglstream-controller ./pure-qml

Fixes: QTBUG-71697
Change-Id: I73bb2a8fe9852afe1b5807cbb8c35dc4c7624dad
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

5 files changed, 690 insertions, 0 deletions

diff --git a/src/hardwareintegration/compositor/wayland-eglstream-controller/wayland-eglstream-controller.pri b/src/hardwareintegration/compositor/wayland-eglstream-controller/wayland-eglstream-controller.pri
new file mode 100644
index 00000000..931475ef
--- /dev/null
+++ b/src/hardwareintegration/compositor/wayland-eglstream-controller/wayland-eglstream-controller.pri
@@ -0,0 +1,16 @@
+INCLUDEPATH += $$PWD
+
+QMAKE_USE_PRIVATE += egl wayland-server wayland-egl
+
+CONFIG += wayland-scanner
+WAYLANDSERVERSOURCES += $$PWD/../../../3rdparty/protocol/wl-eglstream-controller.xml
+
+QT += egl_support-private
+
+SOURCES += \
+    $$PWD/waylandeglstreamintegration.cpp \
+    $$PWD/waylandeglstreamcontroller.cpp
+
+HEADERS += \
+    $$PWD/waylandeglstreamintegration.h \
+    $$PWD/waylandeglstreamcontroller.h
diff --git a/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.cpp b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.cpp
new file mode 100644
index 00000000..09859d7e
--- /dev/null
+++ b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.cpp
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or 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.GPL2 and 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "waylandeglstreamcontroller.h"
+#include "waylandeglstreamintegration.h"
+
+#include <QtWaylandCompositor/QWaylandCompositor>
+
+#include <unistd.h>
+
+QT_BEGIN_NAMESPACE
+
+
+
+WaylandEglStreamController::WaylandEglStreamController(wl_display *display, WaylandEglStreamClientBufferIntegration *clientBufferIntegration)
+    : wl_eglstream_controller(display, 1 /*version*/)
+    , m_clientBufferIntegration(clientBufferIntegration)
+{
+}
+
+void WaylandEglStreamController::eglstream_controller_attach_eglstream_consumer(Resource *resource, struct ::wl_resource *wl_surface, struct ::wl_resource *wl_buffer)
+{
+    Q_UNUSED(resource);
+    m_clientBufferIntegration->attachEglStreamConsumer(wl_surface, wl_buffer);
+}
+
+QT_END_NAMESPACE
diff --git a/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.h b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.h
new file mode 100644
index 00000000..3a7fcee7
--- /dev/null
+++ b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamcontroller.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or 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.GPL2 and 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WAYLANDEGLSTREAMCONTROLLER_H
+#define WAYLANDEGLSTREAMCONTROLLER_H
+
+#include "qwayland-server-wl-eglstream-controller.h"
+
+#include <QtWaylandCompositor/private/qwayland-server-wayland.h>
+#include <QtWaylandCompositor/private/qwlclientbufferintegration_p.h>
+
+#include <QtCore/QObject>
+#include <QtCore/QHash>
+#include <QtCore/QSize>
+#include <QtCore/QTextStream>
+#include <QtGui/QOpenGLTexture>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class QWaylandCompositor;
+class QWaylandResource;
+class WaylandEglStreamClientBufferIntegration;
+
+class WaylandEglStreamController : public QtWaylandServer::wl_eglstream_controller
+{
+public:
+    explicit WaylandEglStreamController(wl_display *display, WaylandEglStreamClientBufferIntegration *clientBufferIntegration);
+
+protected:
+    void eglstream_controller_attach_eglstream_consumer(Resource *resource, struct ::wl_resource *wl_surface, struct ::wl_resource *wl_buffer) override;
+
+private:
+    WaylandEglStreamClientBufferIntegration *m_clientBufferIntegration;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // WAYLANDEGLSTREAMCONTROLLER_H
diff --git a/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.cpp b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.cpp
new file mode 100644
index 00000000..1493e9fc
--- /dev/null
+++ b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.cpp
@@ -0,0 +1,439 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or 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.GPL2 and 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "waylandeglstreamintegration.h"
+#include "waylandeglstreamcontroller.h"
+
+#include <QtWaylandCompositor/QWaylandCompositor>
+#include <QtGui/QGuiApplication>
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QOpenGLTexture>
+#include <QtGui/QOffscreenSurface>
+
+#include <QtEglSupport/private/qeglstreamconvenience_p.h>
+#include <qpa/qplatformnativeinterface.h>
+
+#include <QtWaylandCompositor/private/qwaylandcompositor_p.h>
+#include <QtWaylandCompositor/private/qwlbuffermanager_p.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <unistd.h>
+
+#ifndef GL_TEXTURE_EXTERNAL_OES
+#define GL_TEXTURE_EXTERNAL_OES     0x8D65
+#endif
+
+#ifndef EGL_WAYLAND_BUFFER_WL
+#define EGL_WAYLAND_BUFFER_WL       0x31D5
+#endif
+
+#ifndef EGL_WAYLAND_EGLSTREAM_WL
+#define EGL_WAYLAND_EGLSTREAM_WL    0x334B
+#endif
+
+#ifndef EGL_WAYLAND_PLANE_WL
+#define EGL_WAYLAND_PLANE_WL        0x31D6
+#endif
+
+#ifndef EGL_WAYLAND_Y_INVERTED_WL
+#define EGL_WAYLAND_Y_INVERTED_WL   0x31DB
+#endif
+
+#ifndef EGL_TEXTURE_RGB
+#define EGL_TEXTURE_RGB             0x305D
+#endif
+
+#ifndef EGL_TEXTURE_RGBA
+#define EGL_TEXTURE_RGBA            0x305E
+#endif
+
+#ifndef EGL_TEXTURE_EXTERNAL_WL
+#define EGL_TEXTURE_EXTERNAL_WL     0x31DA
+#endif
+
+#ifndef EGL_TEXTURE_Y_U_V_WL
+#define EGL_TEXTURE_Y_U_V_WL        0x31D7
+#endif
+
+#ifndef EGL_TEXTURE_Y_UV_WL
+#define EGL_TEXTURE_Y_UV_WL         0x31D8
+#endif
+
+#ifndef EGL_TEXTURE_Y_XUXV_WL
+#define EGL_TEXTURE_Y_XUXV_WL       0x31D9
+#endif
+
+#ifndef EGL_PLATFORM_X11_KHR
+#define EGL_PLATFORM_X11_KHR        0x31D5
+#endif
+
+QT_BEGIN_NAMESPACE
+
+/* Needed for compatibility with Mesa older than 10.0. */
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYWAYLANDBUFFERWL_compat) (EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
+
+#ifndef EGL_WL_bind_wayland_display
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLUNBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
+#endif
+
+static const char *
+egl_error_string(EGLint code)
+{
+#define MYERRCODE(x) case x: return #x;
+    switch (code) {
+    MYERRCODE(EGL_SUCCESS)
+    MYERRCODE(EGL_NOT_INITIALIZED)
+    MYERRCODE(EGL_BAD_ACCESS)
+    MYERRCODE(EGL_BAD_ALLOC)
+    MYERRCODE(EGL_BAD_ATTRIBUTE)
+    MYERRCODE(EGL_BAD_CONTEXT)
+    MYERRCODE(EGL_BAD_CONFIG)
+    MYERRCODE(EGL_BAD_CURRENT_SURFACE)
+    MYERRCODE(EGL_BAD_DISPLAY)
+    MYERRCODE(EGL_BAD_SURFACE)
+    MYERRCODE(EGL_BAD_MATCH)
+    MYERRCODE(EGL_BAD_PARAMETER)
+    MYERRCODE(EGL_BAD_NATIVE_PIXMAP)
+    MYERRCODE(EGL_BAD_NATIVE_WINDOW)
+    MYERRCODE(EGL_CONTEXT_LOST)
+    default:
+        return "unknown";
+    }
+#undef MYERRCODE
+}
+
+struct BufferState
+{
+    BufferState() = default;
+
+    EGLint egl_format = EGL_TEXTURE_EXTERNAL_WL;
+    QOpenGLTexture *textures[3] = {};
+    EGLStreamKHR egl_stream = EGL_NO_STREAM_KHR;
+
+    bool isYInverted = false;
+    QSize size;
+};
+
+class WaylandEglStreamClientBufferIntegrationPrivate
+{
+public:
+    WaylandEglStreamClientBufferIntegrationPrivate() = default;
+
+    bool ensureContext();
+    bool initEglStream(WaylandEglStreamClientBuffer *buffer, struct ::wl_resource *bufferHandle);
+    void handleEglstreamTexture(WaylandEglStreamClientBuffer *buffer);
+    void deleteGLTextureWhenPossible(QOpenGLTexture *texture) { orphanedTextures << texture; }
+    void deleteOrphanedTextures();
+
+    EGLDisplay egl_display = EGL_NO_DISPLAY;
+    bool display_bound = false;
+    QOffscreenSurface *offscreenSurface = nullptr;
+    QOpenGLContext *localContext = nullptr;
+    QVector<QOpenGLTexture *> orphanedTextures;
+
+    WaylandEglStreamController *eglStreamController = nullptr;
+
+    PFNEGLBINDWAYLANDDISPLAYWL egl_bind_wayland_display = nullptr;
+    PFNEGLUNBINDWAYLANDDISPLAYWL egl_unbind_wayland_display = nullptr;
+    PFNEGLQUERYWAYLANDBUFFERWL_compat egl_query_wayland_buffer = nullptr;
+
+    QEGLStreamConvenience *funcs = nullptr;
+    static WaylandEglStreamClientBufferIntegrationPrivate *get(WaylandEglStreamClientBufferIntegration *integration) {
+        return shuttingDown ? nullptr : integration->d_ptr.data();
+    }
+
+    static bool shuttingDown;
+};
+
+bool WaylandEglStreamClientBufferIntegrationPrivate::shuttingDown = false;
+
+void WaylandEglStreamClientBufferIntegrationPrivate::deleteOrphanedTextures()
+{
+    Q_ASSERT(QOpenGLContext::currentContext());
+    qDeleteAll(orphanedTextures);
+    orphanedTextures.clear();
+}
+
+bool WaylandEglStreamClientBufferIntegrationPrivate::ensureContext()
+{
+    bool localContextNeeded = false;
+    if (!QOpenGLContext::currentContext()) {
+        if (!localContext && QOpenGLContext::globalShareContext()) {
+            localContext = new QOpenGLContext;
+            localContext->setShareContext(QOpenGLContext::globalShareContext());
+            localContext->create();
+        }
+        if (localContext) {
+            if (!offscreenSurface) {
+                offscreenSurface = new QOffscreenSurface;
+                offscreenSurface->setFormat(localContext->format());
+                offscreenSurface->create();
+            }
+            localContext->makeCurrent(offscreenSurface);
+            localContextNeeded = true;
+        }
+    }
+    return localContextNeeded;
+}
+
+
+bool WaylandEglStreamClientBufferIntegrationPrivate::initEglStream(WaylandEglStreamClientBuffer *buffer, wl_resource *bufferHandle)
+{
+    BufferState &state = *buffer->d;
+    state.egl_format = EGL_TEXTURE_EXTERNAL_WL;
+    state.isYInverted = false;
+
+    EGLNativeFileDescriptorKHR streamFd = EGL_NO_FILE_DESCRIPTOR_KHR;
+
+    if (egl_query_wayland_buffer(egl_display, bufferHandle, EGL_WAYLAND_BUFFER_WL, &streamFd)) {
+        state.egl_stream = funcs->create_stream_from_file_descriptor(egl_display, streamFd);
+        close(streamFd);
+    } else {
+        EGLAttrib stream_attribs[] = {
+            EGL_WAYLAND_EGLSTREAM_WL, (EGLAttrib)bufferHandle,
+            EGL_NONE
+        };
+        state.egl_stream = funcs->create_stream_attrib_nv(egl_display, stream_attribs);
+    }
+
+    if (state.egl_stream == EGL_NO_STREAM_KHR) {
+        qWarning("%s:%d: eglCreateStreamFromFileDescriptorKHR failed: 0x%x", Q_FUNC_INFO, __LINE__, eglGetError());
+        return false;
+    }
+
+    bool usingLocalContext = ensureContext();
+
+    Q_ASSERT(QOpenGLContext::currentContext());
+
+    auto texture = new QOpenGLTexture(static_cast<QOpenGLTexture::Target>(GL_TEXTURE_EXTERNAL_OES));
+    texture->create();
+    state.textures[0] = texture; // TODO: support multiple planes
+
+    texture->bind();
+
+    auto newStream = funcs->stream_consumer_gltexture(egl_display, state.egl_stream);
+    if (usingLocalContext)
+        localContext->doneCurrent();
+
+    if (!newStream) {
+        EGLint code = eglGetError();
+        qWarning() << "Could not initialize EGLStream:" << egl_error_string(code) << hex << (long)code;
+        funcs->destroy_stream(egl_display, state.egl_stream);
+        state.egl_stream = EGL_NO_STREAM_KHR;
+        return false;
+    }
+    return true;
+}
+
+void WaylandEglStreamClientBufferIntegrationPrivate::handleEglstreamTexture(WaylandEglStreamClientBuffer *buffer)
+{
+    bool usingLocalContext = ensureContext();
+
+    BufferState &state = *buffer->d;
+    auto texture = state.textures[0];
+
+    // EGLStream requires calling acquire on every frame.
+    texture->bind();
+    EGLint stream_state;
+    funcs->query_stream(egl_display, state.egl_stream, EGL_STREAM_STATE_KHR, &stream_state);
+
+    if (stream_state == EGL_STREAM_STATE_NEW_FRAME_AVAILABLE_KHR) {
+        if (funcs->stream_consumer_acquire(egl_display, state.egl_stream) != EGL_TRUE)
+            qWarning("%s:%d: eglStreamConsumerAcquireKHR failed: 0x%x", Q_FUNC_INFO, __LINE__, eglGetError());
+    }
+
+    if (usingLocalContext)
+        localContext->doneCurrent();
+}
+
+
+WaylandEglStreamClientBufferIntegration::WaylandEglStreamClientBufferIntegration()
+    : d_ptr(new WaylandEglStreamClientBufferIntegrationPrivate)
+{
+}
+
+WaylandEglStreamClientBufferIntegration::~WaylandEglStreamClientBufferIntegration()
+{
+    WaylandEglStreamClientBufferIntegrationPrivate::shuttingDown = true;
+}
+
+void WaylandEglStreamClientBufferIntegration::attachEglStreamConsumer(struct ::wl_resource *wl_surface, struct ::wl_resource *wl_buffer)
+{
+    Q_D(WaylandEglStreamClientBufferIntegration);
+    Q_UNUSED(wl_surface);
+
+    // NOTE: must use getBuffer to create the buffer here, so the buffer will end up in the buffer manager's hash
+
+    auto *bufferManager = QWaylandCompositorPrivate::get(m_compositor)->bufferManager();
+    auto *clientBuffer = static_cast<WaylandEglStreamClientBuffer*>(bufferManager->getBuffer(wl_buffer));
+
+    d->initEglStream(clientBuffer, wl_buffer);
+}
+
+void WaylandEglStreamClientBufferIntegration::initializeHardware(struct wl_display *display)
+{
+    Q_D(WaylandEglStreamClientBufferIntegration);
+
+    const bool ignoreBindDisplay = !qgetenv("QT_WAYLAND_IGNORE_BIND_DISPLAY").isEmpty();
+
+    QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
+    if (!nativeInterface) {
+        qWarning("QtCompositor: Failed to initialize EGL display. No native platform interface available.");
+        return;
+    }
+
+    d->egl_display = nativeInterface->nativeResourceForIntegration("EglDisplay");
+    if (!d->egl_display) {
+        qWarning("QtCompositor: Failed to initialize EGL display. Could not get EglDisplay for window.");
+        return;
+    }
+
+    const char *extensionString = eglQueryString(d->egl_display, EGL_EXTENSIONS);
+    if ((!extensionString || !strstr(extensionString, "EGL_WL_bind_wayland_display")) && !ignoreBindDisplay) {
+        qWarning("QtCompositor: Failed to initialize EGL display. There is no EGL_WL_bind_wayland_display extension.");
+        return;
+    }
+
+    d->egl_bind_wayland_display = reinterpret_cast<PFNEGLBINDWAYLANDDISPLAYWL>(eglGetProcAddress("eglBindWaylandDisplayWL"));
+    d->egl_unbind_wayland_display = reinterpret_cast<PFNEGLUNBINDWAYLANDDISPLAYWL>(eglGetProcAddress("eglUnbindWaylandDisplayWL"));
+    if ((!d->egl_bind_wayland_display || !d->egl_unbind_wayland_display) && !ignoreBindDisplay) {
+        qWarning("QtCompositor: Failed to initialize EGL display. Could not find eglBindWaylandDisplayWL and eglUnbindWaylandDisplayWL.");
+        return;
+    }
+
+    d->egl_query_wayland_buffer = reinterpret_cast<PFNEGLQUERYWAYLANDBUFFERWL_compat>(eglGetProcAddress("eglQueryWaylandBufferWL"));
+    if (!d->egl_query_wayland_buffer) {
+        qWarning("QtCompositor: Failed to initialize EGL display. Could not find eglQueryWaylandBufferWL.");
+        return;
+    }
+
+    if (d->egl_bind_wayland_display && d->egl_unbind_wayland_display) {
+        d->display_bound = d->egl_bind_wayland_display(d->egl_display, display);
+        if (!d->display_bound) {
+            if (!ignoreBindDisplay) {
+                qWarning("QtCompositor: Failed to initialize EGL display. Could not bind Wayland display.");
+                return;
+            } else {
+                qWarning("QtCompositor: Could not bind Wayland display. Ignoring.");
+            }
+        }
+    }
+
+    d->eglStreamController = new WaylandEglStreamController(display, this);
+
+    d->funcs = new QEGLStreamConvenience;
+    d->funcs->initialize(d->egl_display);
+}
+
+QtWayland::ClientBuffer *WaylandEglStreamClientBufferIntegration::createBufferFor(wl_resource *buffer)
+{
+    if (wl_shm_buffer_get(buffer))
+        return nullptr;
+
+    return new WaylandEglStreamClientBuffer(this, buffer);
+}
+
+
+WaylandEglStreamClientBuffer::WaylandEglStreamClientBuffer(WaylandEglStreamClientBufferIntegration *integration, wl_resource *buffer)
+    : ClientBuffer(buffer)
+    , m_integration(integration)
+{
+    auto *p = WaylandEglStreamClientBufferIntegrationPrivate::get(m_integration);
+    d = new BufferState;
+    if (buffer && !wl_shm_buffer_get(buffer)) {
+        EGLint width, height;
+        p->egl_query_wayland_buffer(p->egl_display, buffer, EGL_WIDTH, &width);
+        p->egl_query_wayland_buffer(p->egl_display, buffer, EGL_HEIGHT, &height);
+        d->size = QSize(width, height);
+    }
+}
+
+WaylandEglStreamClientBuffer::~WaylandEglStreamClientBuffer()
+{
+    auto *p = WaylandEglStreamClientBufferIntegrationPrivate::get(m_integration);
+
+    if (p) {
+        if (d->egl_stream)
+            p->funcs->destroy_stream(p->egl_display, d->egl_stream);
+
+        for (auto *texture : d->textures)
+            p->deleteGLTextureWhenPossible(texture);
+    }
+    delete d;
+}
+
+
+QWaylandBufferRef::BufferFormatEgl WaylandEglStreamClientBuffer::bufferFormatEgl() const
+{
+    return QWaylandBufferRef::BufferFormatEgl_EXTERNAL_OES;
+}
+
+
+QSize WaylandEglStreamClientBuffer::size() const
+{
+    return d->size;
+}
+
+QWaylandSurface::Origin WaylandEglStreamClientBuffer::origin() const
+{
+    return d->isYInverted ? QWaylandSurface::OriginTopLeft : QWaylandSurface::OriginBottomLeft;
+}
+
+QOpenGLTexture *WaylandEglStreamClientBuffer::toOpenGlTexture(int plane)
+{
+    auto *p = WaylandEglStreamClientBufferIntegrationPrivate::get(m_integration);
+    // At this point we should have a valid OpenGL context, so it's safe to destroy textures
+    p->deleteOrphanedTextures();
+
+    if (!m_buffer)
+        return nullptr;
+
+    return d->textures[plane];
+}
+
+void WaylandEglStreamClientBuffer::setCommitted(QRegion &damage)
+{
+    ClientBuffer::setCommitted(damage);
+    auto *p = WaylandEglStreamClientBufferIntegrationPrivate::get(m_integration);
+    p->handleEglstreamTexture(this);
+}
+
+QT_END_NAMESPACE
diff --git a/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.h b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.h
new file mode 100644
index 00000000..d1930204
--- /dev/null
+++ b/src/hardwareintegration/compositor/wayland-eglstream-controller/waylandeglstreamintegration.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or 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.GPL2 and 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef WAYLANDEGLSTREAMINTEGRATION_H
+#define WAYLANDEGLSTREAMINTEGRATION_H
+
+#include <QtWaylandCompositor/private/qwlclientbufferintegration_p.h>
+#include <QtCore/QScopedPointer>
+#include <QtWaylandCompositor/private/qwlclientbuffer_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class WaylandEglStreamClientBufferIntegrationPrivate;
+
+class WaylandEglStreamClientBufferIntegration : public QtWayland::ClientBufferIntegration
+{
+    Q_DECLARE_PRIVATE(WaylandEglStreamClientBufferIntegration)
+public:
+    WaylandEglStreamClientBufferIntegration();
+    ~WaylandEglStreamClientBufferIntegration() override;
+
+    void initializeHardware(struct ::wl_display *display) override;
+
+    QtWayland::ClientBuffer *createBufferFor(wl_resource *buffer) override;
+
+    void attachEglStreamConsumer(struct ::wl_resource *wl_surface, struct ::wl_resource *wl_buffer);
+
+private:
+    Q_DISABLE_COPY(WaylandEglStreamClientBufferIntegration)
+    QScopedPointer<WaylandEglStreamClientBufferIntegrationPrivate> d_ptr;
+};
+
+struct BufferState;
+
+class WaylandEglStreamClientBuffer : public QtWayland::ClientBuffer
+{
+public:
+    ~WaylandEglStreamClientBuffer() override;
+
+    QWaylandBufferRef::BufferFormatEgl bufferFormatEgl() const override;
+    QSize size() const override;
+    QWaylandSurface::Origin origin() const override;
+    QOpenGLTexture *toOpenGlTexture(int plane) override;
+    void setCommitted(QRegion &damage) override;
+
+private:
+    friend class WaylandEglStreamClientBufferIntegration;
+    friend class WaylandEglStreamClientBufferIntegrationPrivate;
+
+    WaylandEglStreamClientBuffer(WaylandEglStreamClientBufferIntegration* integration, wl_resource *bufferResource);
+
+    BufferState *d = nullptr;
+    WaylandEglStreamClientBufferIntegration *m_integration = nullptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // WAYLANDEGLSTREAMINTEGRATION_H