native android support with eglfs

Enable eglfs build against any android > 4 tree,
linking to native libs without emulation layers,
running on top of surfaceflinger.
No GNUs where harmed in the process.

Yes, any android.
Tested on maguro, tf300, eeepc-x86
x86-64 compiles but broken elsewhere.

You don't need an Android.mk, but you must compile from within
a shell setup with androids "lunch" or an equivalent that set TOP and OUT.
Since we do callbacks to androids build system,
the same env restrictions apply (must use gnu bash, and gnumake 3.81)

Done-with: Samuel Roedal <samuel.rodal@digia.com>
Done-with: Robin Burchell <robin+qt@viroteck.net>
Done-with: Brian Avery <brian.avery@nokia.com>

Change-Id: Iec0178cdeadbeefc79e4fe6ef449d399ac8ca666
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/mkspecs/unsupported/android-g++/qeglfshooks_surfaceflinger.cpp b/mkspecs/unsupported/android-g++/qeglfshooks_surfaceflinger.cpp
new file mode 100644
index 0000000000..bb751eb98d
--- /dev/null
+++ b/mkspecs/unsupported/android-g++/qeglfshooks_surfaceflinger.cpp
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the qmake spec 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 "qeglfshooks.h"
+
+#include <ui/DisplayInfo.h>
+#include <ui/FramebufferNativeWindow.h>
+#include <gui/SurfaceComposerClient.h>
+
+using namespace android;
+
+QT_BEGIN_NAMESPACE
+
+class QEglFSPandaHooks : public QEglFSHooks
+{
+public:
+    virtual EGLNativeWindowType createNativeWindow(const QSize &size, const QSurfaceFormat &format);
+private:
+    // androidy things
+    sp<android::SurfaceComposerClient> mSession;
+    sp<android::SurfaceControl> mControl;
+    sp<android::Surface> mAndroidSurface;
+};
+
+EGLNativeWindowType QEglFSPandaHooks::createNativeWindow(const QSize &size, const QSurfaceFormat &)
+{
+    Q_UNUSED(size);
+
+    mSession = new SurfaceComposerClient();
+    DisplayInfo dinfo;
+    int status=0;
+    status = mSession->getDisplayInfo(0, &dinfo);
+    mControl = mSession->createSurface(
+            0, dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_888);
+    SurfaceComposerClient::openGlobalTransaction();
+    mControl->setLayer(0x40000000);
+    mControl->setAlpha(0.4);
+    SurfaceComposerClient::closeGlobalTransaction();
+    mAndroidSurface = mControl->getSurface();
+
+    EGLNativeWindowType eglWindow = mAndroidSurface.get();
+    return eglWindow;
+}
+
+static QEglFSPandaHooks eglFSPandaHooks;
+QEglFSHooks *platformHooks = &eglFSPandaHooks;
+
+QT_END_NAMESPACE