qt5base-lts/mkspecs/devices/linux-rasp-pi-g++/qeglfshooks_pi.cpp

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the qmake spec of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qeglfshooks.h"
#include <bcm_host.h>
#if 0 //fb size query
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/fb.h>
#endif
static DISPMANX_DISPLAY_HANDLE_T dispman_display = 0;
static DISPMANX_UPDATE_HANDLE_T dispman_update = 0;
class QEglFSPiHooks : public QEglFSHooks
{
public:
virtual void platformInit();
virtual void platformDestroy();
virtual EGLNativeDisplayType platformDisplay() const;
virtual QSize screenSize() const;
virtual EGLNativeWindowType createNativeWindow(const QSize &size);
virtual void destroyNativeWindow(EGLNativeWindowType window);
virtual bool hasCapability(QPlatformIntegration::Capability cap) const;
};
void QEglFSPiHooks::platformInit()
{
bcm_host_init();
}
EGLNativeDisplayType QEglFSPiHooks::platformDisplay() const
{
dispman_display = vc_dispmanx_display_open(0/* LCD */);
return EGL_DEFAULT_DISPLAY;
}
void QEglFSPiHooks::platformDestroy()
{
vc_dispmanx_display_close(dispman_display);
}
QSize QEglFSPiHooks::screenSize() const
{
//both mechanisms work
#if 1
uint32_t width, height;
graphics_get_display_size(0 /* LCD */, &width, &height);
return QSize(width, height);
#else
int fd = open("/dev/fb0", O_RDONLY);
if (fd == -1) {
fprintf(stderr, "Failed to open fb to detect screen resolution!\n");
return QSize();
}
struct fb_var_screeninfo vinfo;
if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) = -1) {
fprintf(stderr, "Could not query screen info variable\n");
close(fd);
return QSize();
}
close(fd);
return QSize(vinfo.xres, vinfo.yres);
#endif
}
EGLNativeWindowType QEglFSPiHooks::createNativeWindow(const QSize &size)
{
VC_RECT_T dst_rect;
dst_rect.x = 0;
dst_rect.y = 0;
dst_rect.width = size.width();
dst_rect.height = size.height();
VC_RECT_T src_rect;
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = size.width() << 16;
src_rect.height = size.height() << 16;
dispman_update = vc_dispmanx_update_start(0);
VC_DISPMANX_ALPHA_T alpha;
alpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS;
alpha.opacity = 0xFF;
alpha.mask = 0;
DISPMANX_ELEMENT_HANDLE_T dispman_element = vc_dispmanx_element_add(
dispman_update, dispman_display, 0, &dst_rect, 0, &src_rect,
DISPMANX_PROTECTION_NONE, &alpha, (DISPMANX_CLAMP_T *)NULL, (DISPMANX_TRANSFORM_T)0);
vc_dispmanx_update_submit_sync(dispman_update);
EGL_DISPMANX_WINDOW_T *eglWindow = new EGL_DISPMANX_WINDOW_T;
eglWindow->element = dispman_element;
eglWindow->width = size.width();
eglWindow->height = size.height();
return eglWindow;
}
void QEglFSPiHooks::destroyNativeWindow(EGLNativeWindowType window)
{
EGL_DISPMANX_WINDOW_T *eglWindow = static_cast<EGL_DISPMANX_WINDOW_T *>(window);
vc_dispmanx_element_remove(dispman_update, eglWindow->element);
delete eglWindow;
}
bool QEglFSPiHooks::hasCapability(QPlatformIntegration::Capability cap) const
{
switch (cap) {
case QPlatformIntegration::ThreadedPixmaps:
case QPlatformIntegration::OpenGL:
case QPlatformIntegration::ThreadedOpenGL:
case QPlatformIntegration::BufferQueueingOpenGL:
return true;
default:
return false;
}
}
QEglFSPiHooks eglFSPiHooks;
QEglFSHooks *platformHooks = &eglFSPiHooks;