Add SurfaceFactoryQt and OzonePlatformEglfs.

SurfaceFactoryQt::loadEGLGLES2Bindings is needed to find
and load EGL and GLES2 libraries on embedded linux.
It also provides a function to query the native display.

We are using qmake variables at compile time to detect
where we should look for the libraries at runtime.

For EGLFS we query the native display through PlatformNativeInterface.
If the resource is not exposed by Qt (pre 5.4),
then we assume EGL_DEFAULT_DISPLAY, which is the right
parameter for close to 100% of the cases anyway.

OzonePlatformEglfs is just boiler plate code.

Change-Id: I3ad08a56c50d6160be653ffb168b3f1f791e5245
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/src/core/surface_factory_qt.cpp b/src/core/surface_factory_qt.cpp
new file mode 100644
index 000000000..3b4dcfc8b
--- /dev/null
+++ b/src/core/surface_factory_qt.cpp
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine 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 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 "surface_factory_qt.h"
+
+#include "type_conversion.h"
+
+#include "base/files/file_path.h"
+#include "base/native_library.h"
+#include "ui/gl/gl_implementation.h"
+#include "ui/gl/gl_implementation_linux.h"
+
+#include <QGuiApplication>
+#include <qpa/qplatformnativeinterface.h>
+
+#if defined(USE_OZONE)
+#include <EGL/egl.h>
+
+#ifndef QT_LIBDIR_EGL
+#define QT_LIBDIR_EGL "/usr/lib"
+#endif
+#ifndef QT_LIBDIR_GLES2
+#define QT_LIBDIR_GLES2 QT_LIBDIR_EGL
+#endif
+
+bool SurfaceFactoryQt::LoadEGLGLES2Bindings(AddGLLibraryCallback add_gl_library, SetGLGetProcAddressProcCallback set_gl_get_proc_address)
+{
+
+    base::FilePath libEGLPath = toFilePath(QT_LIBDIR_EGL);
+    libEGLPath = libEGLPath.Append("libEGL.so");
+    base::NativeLibrary eglLibrary = gfx::LoadLibrary(libEGLPath);
+    if (!eglLibrary) {
+        LOG(ERROR) << "Failed to load EGL: " << libEGLPath.LossyDisplayName();
+        return false;
+    }
+
+    base::FilePath libGLES2Path = toFilePath(QT_LIBDIR_GLES2);
+    libGLES2Path = libGLES2Path.Append("libGLESv2.so");
+    base::NativeLibrary gles2Library = gfx::LoadLibrary(libGLES2Path);
+    if (!gles2Library) {
+        LOG(ERROR) << "failed to load GLESv2: " << libGLES2Path.LossyDisplayName();
+        return false;
+    }
+
+    gfx::GLGetProcAddressProc get_proc_address = reinterpret_cast<gfx::GLGetProcAddressProc>(base::GetFunctionPointerFromNativeLibrary(eglLibrary, "eglGetProcAddress"));
+    if (!get_proc_address) {
+        LOG(ERROR) << "eglGetProcAddress not found.";
+        base::UnloadNativeLibrary(eglLibrary);
+        base::UnloadNativeLibrary(gles2Library);
+        return false;
+    }
+
+    gfx::SetGLGetProcAddressProc(get_proc_address);
+    gfx::AddGLNativeLibrary(eglLibrary);
+    gfx::AddGLNativeLibrary(gles2Library);
+    return true;
+}
+
+intptr_t SurfaceFactoryQt::GetNativeDisplay()
+{
+    static void *display = qApp->platformNativeInterface()->nativeResourceForIntegration(QByteArrayLiteral("nativedisplay"));
+
+    if (display)
+        return reinterpret_cast<intptr_t>(display);
+
+    return reinterpret_cast<intptr_t>(EGL_DEFAULT_DISPLAY);
+}
+
+#endif
+