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/* Copyright (C) 2007-2008 Constantin Kaplinsky. All Rights Reserved.
* Copyright 2014 Pierre Ossman for Cendio AB
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// XPixelBuffer.cxx
//
#include <vector>
#include <rfb/Region.h>
#include <X11/Xlib.h>
#include <x0vncserver/XPixelBuffer.h>
using namespace rfb;
XPixelBuffer::XPixelBuffer(Display *dpy, ImageFactory &factory,
const Rect &rect)
: FullFramePixelBuffer(),
m_poller(0),
m_dpy(dpy),
m_image(factory.newImage(dpy, rect.width(), rect.height())),
m_offsetLeft(rect.tl.x),
m_offsetTop(rect.tl.y)
{
// Fill in the PixelFormat structure of the parent class.
format = PixelFormat(m_image->xim->bits_per_pixel,
m_image->xim->depth,
(m_image->xim->byte_order == MSBFirst),
m_image->isTrueColor(),
m_image->xim->red_mask >> (ffs(m_image->xim->red_mask) - 1),
m_image->xim->green_mask >> (ffs(m_image->xim->green_mask) - 1),
m_image->xim->blue_mask >> (ffs(m_image->xim->blue_mask) - 1),
ffs(m_image->xim->red_mask) - 1,
ffs(m_image->xim->green_mask) - 1,
ffs(m_image->xim->blue_mask) - 1);
// Set up the remaining data of the parent class.
width_ = rect.width();
height_ = rect.height();
data = (rdr::U8 *)m_image->xim->data;
// Calculate the distance in pixels between two subsequent scan
// lines of the framebuffer. This may differ from image width.
stride = m_image->xim->bytes_per_line * 8 / m_image->xim->bits_per_pixel;
// Get initial screen image from the X display.
m_image->get(DefaultRootWindow(m_dpy), m_offsetLeft, m_offsetTop);
// PollingManager will detect changed pixels.
m_poller = new PollingManager(dpy, getImage(), factory,
m_offsetLeft, m_offsetTop);
}
XPixelBuffer::~XPixelBuffer()
{
delete m_poller;
delete m_image;
}
void
XPixelBuffer::grabRegion(const rfb::Region& region)
{
std::vector<Rect> rects;
std::vector<Rect>::const_iterator i;
region.get_rects(&rects);
for (i = rects.begin(); i != rects.end(); i++) {
grabRect(*i);
}
}
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