1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/* Copyright (C) 2007-2008 Constantin Kaplinsky. All Rights Reserved.
*
* 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, ColourMap* cm)
: 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),
m_stride(0)
{
// Fill in the PixelFormat structure of the parent class.
format.bpp = m_image->xim->bits_per_pixel;
format.depth = m_image->xim->depth;
format.bigEndian = (m_image->xim->byte_order == MSBFirst);
format.trueColour = m_image->isTrueColor();
format.redShift = ffs(m_image->xim->red_mask) - 1;
format.greenShift = ffs(m_image->xim->green_mask) - 1;
format.blueShift = ffs(m_image->xim->blue_mask) - 1;
format.redMax = m_image->xim->red_mask >> format.redShift;
format.greenMax = m_image->xim->green_mask >> format.greenShift;
format.blueMax = m_image->xim->blue_mask >> format.blueShift;
// Set up the remaining data of the parent class.
width_ = rect.width();
height_ = rect.height();
data = (rdr::U8 *)m_image->xim->data;
colourmap = cm;
// Calculate the distance in pixels between two subsequent scan
// lines of the framebuffer. This may differ from image width.
m_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);
}
}
|
