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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins 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.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//#include <QDebug>
#include "qkmsscreen.h"
#include "qkmsdevice.h"
#include "qkmsintegration.h"
#include <QtCore/QSocketNotifier>
#include <QtCore/private/qcore_unix_p.h>
QT_BEGIN_NAMESPACE
QKmsDevice::QKmsDevice(const QString &path, QKmsIntegration *parent) :
QObject(0), m_integration(parent)
{
m_fd = QT_OPEN(path.toAscii().constData(), O_RDWR);
if (m_fd < 0) {
qWarning("Could not open %s.", path.toAscii().constData());
qFatal("No DRM display device");
}
m_graphicsBufferManager = gbm_create_device(m_fd);
m_eglDisplay = eglGetDisplay(m_graphicsBufferManager);
if (m_eglDisplay == EGL_NO_DISPLAY) {
qWarning("Could not open EGL display");
qFatal("EGL error");
}
EGLint major;
EGLint minor;
if (!eglInitialize(m_eglDisplay, &major, &minor)) {
qWarning("Could not initialize EGL display");
qFatal("EGL error");
}
QString extensions = eglQueryString(m_eglDisplay, EGL_EXTENSIONS);
if (!extensions.contains(QString::fromLatin1("EGL_KHR_surfaceless_opengl"))) {
qFatal("EGL_KHR_surfaceless_opengl extension not available");
}
//Initialize EGLContext
static EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
eglBindAPI(EGL_OPENGL_ES_API);
m_eglContext = eglCreateContext(m_eglDisplay, 0, 0, contextAttribs);
if (m_eglContext == EGL_NO_CONTEXT) {
qWarning("Could not create the EGL context.");
eglTerminate(m_eglDisplay);
qFatal("EGL error");
}
createScreens();
QSocketNotifier *notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
connect(notifier, SIGNAL(activated(int)), this, SLOT(handlePageFlipCompleted()));
}
QKmsDevice::~QKmsDevice()
{
if (m_eglContext != EGL_NO_CONTEXT) {
eglDestroyContext(m_eglDisplay, m_eglContext);
m_eglContext = EGL_NO_CONTEXT;
}
}
void QKmsDevice::createScreens()
{
drmModeRes *resources = 0;
resources = drmModeGetResources(m_fd);
if (!resources)
qFatal("drmModeGetResources failed");
//Iterate connectors and create screens on each one active
for (int i = 0; i < resources->count_connectors; i++) {
drmModeConnector *connector = 0;
connector = drmModeGetConnector(m_fd, resources->connectors[i]);
if (connector && connector->connection == DRM_MODE_CONNECTED) {
m_integration->addScreen(new QKmsScreen(this, connector->connector_id));
}
drmModeFreeConnector(connector);
}
drmModeFreeResources(resources);
}
void QKmsDevice::handlePageFlipCompleted()
{
//qDebug() << "Display signal recieved";
drmEventContext eventContext;
memset(&eventContext, 0, sizeof eventContext);
eventContext.version = DRM_EVENT_CONTEXT_VERSION;
eventContext.page_flip_handler = QKmsDevice::pageFlipHandler;
drmHandleEvent(m_fd, &eventContext);
}
void QKmsDevice::pageFlipHandler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data)
{
Q_UNUSED(fd)
Q_UNUSED(frame)
Q_UNUSED(sec)
Q_UNUSED(usec)
static unsigned int previousTime = 0;
unsigned int currentTime = sec * 1000000 + usec;
unsigned int refreshTime = 0;
// qDebug() << "fd: " << fd << " frame: " << frame << " sec: "
// << sec << " usec: " << usec << " data: " << data
// << "msecs" << sec * 1000 + usec / 1000;
QKmsScreen *screen = static_cast<QKmsScreen *>(data);
if (previousTime == 0)
refreshTime = 16000;
else
refreshTime = currentTime - previousTime;
screen->setFlipReady(refreshTime);
}
QT_END_NAMESPACE
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