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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications 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 "qvfbmmap.h"
#include "qvfbhdr.h"
#include <QTimer>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ipc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
#include <math.h>
QT_BEGIN_NAMESPACE
QMMapViewProtocol::QMMapViewProtocol(int displayid, const QSize &s,
int d, QObject *parent)
: QVFbViewProtocol(displayid, parent), hdr(0), dataCache(0), windowId(0)
{
switch (d) {
case 1:
case 4:
case 8:
case 12:
case 15:
case 16:
case 18:
case 24:
case 32:
break;
default:
qFatal("Unsupported bit depth %d\n", d);
}
fileName = QString("/tmp/.qtvfb_map-%1").arg(displayid);
int w = s.width();
int h = s.height();
kh = new QVFbKeyPipeProtocol(displayid);
mh = new QVFbMouseLinuxTP(displayid);
int bpl;
if (d < 8)
bpl = (w * d + 7) / 8;
else
bpl = w * ((d + 7) / 8);
displaySize = bpl * h;
unsigned char *data;
uint data_offset_value = sizeof(QVFbHeader);
const int page_size = getpagesize();
if (data_offset_value % page_size)
data_offset_value += page_size - (data_offset_value % page_size);
dataSize = bpl * h + data_offset_value;
unlink(fileName.toLocal8Bit().data());
fd = ::open( fileName.toLocal8Bit().data(), O_CREAT|O_RDWR, 0666 );
::lseek(fd, dataSize, SEEK_SET);
::write(fd, "\0", 1);
if (fd < 0) {
data = (unsigned char *)-1;
} else {
// might need to do something about size?
data = (unsigned char *)mmap(NULL, dataSize, PROT_WRITE | PROT_READ,
MAP_SHARED, fd, 0);
if (data == MAP_FAILED)
data = (unsigned char *)-1;
}
if ( (long)data == -1 ){
delete kh;
delete mh;
qFatal( "Cannot attach to mapped file %s", fileName.toLocal8Bit().data());
}
dataCache = (unsigned char *)malloc(displaySize);
memset(dataCache, 0, displaySize);
memset(data+sizeof(QVFbHeader), 0, displaySize);
hdr = (QVFbHeader *)data;
hdr->width = w;
hdr->height = h;
hdr->depth = d;
hdr->linestep = bpl;
hdr->numcols = 0;
hdr->dataoffset = data_offset_value;
hdr->update = QRect();
hdr->brightness = 255;
hdr->windowId = 0;
mRefreshTimer = new QTimer(this);
connect(mRefreshTimer, SIGNAL(timeout()), this, SLOT(flushChanges()));
}
QMMapViewProtocol::~QMMapViewProtocol()
{
munmap((char *)hdr, dataSize);
::close(fd);
unlink(fileName.toLocal8Bit().constData());
free(dataCache);
delete kh;
delete mh;
}
int QMMapViewProtocol::brightness() const
{
return hdr->brightness;
}
int QMMapViewProtocol::width() const
{
return hdr->width;
}
int QMMapViewProtocol::height() const
{
return hdr->height;
}
int QMMapViewProtocol::depth() const
{
return hdr->depth;
}
int QMMapViewProtocol::linestep() const
{
return hdr->linestep;
}
int QMMapViewProtocol::numcols() const
{
return hdr->numcols;
}
QVector<QRgb> QMMapViewProtocol::clut() const
{
QVector<QRgb> vector(hdr->numcols);
for (int i=0; i < hdr->numcols; ++i)
vector[i] = hdr->clut[i];
return vector;
}
unsigned char *QMMapViewProtocol::data() const
{
return dataCache;
//return ((unsigned char *)hdr)+hdr->dataoffset;
}
void QMMapViewProtocol::flushChanges()
{
// based of dirty rect, copy changes from hdr to hdrcopy
memcpy(dataCache, ((char *)hdr) + hdr->dataoffset, displaySize);
emit displayDataChanged(QRect(0, 0, width(), height()));
}
void QMMapViewProtocol::setRate(int interval)
{
if (interval > 0)
return mRefreshTimer->start(1000/interval);
else
mRefreshTimer->stop();
}
int QMMapViewProtocol::rate() const
{
int i = mRefreshTimer->interval();
if (i > 0)
return 1000/i;
else
return 0;
}
QT_END_NAMESPACE
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