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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/* Copyright (C) 2006 TightVNC Team. 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.
*
* TightVNC distribution homepage on the Web: http://www.tightvnc.com/
*
*/
// -=- ScaledDIBSectionBuffer.cxx
#include <math.h>
#include <rfb_win32/ScaledDIBSectionBuffer.h>
using namespace rfb;
using namespace win32;
const PixelFormat RGB24(32, 24, 0, 1, 255, 255, 255, 16, 8, 0);
ScaledDIBSectionBuffer::ScaledDIBSectionBuffer(HWND window)
: DIBSectionBuffer(window), src_buffer(0), scaling(false) {
scaled_data = &data;
}
ScaledDIBSectionBuffer::~ScaledDIBSectionBuffer() {
if (src_buffer) delete src_buffer;
}
void ScaledDIBSectionBuffer::setScale(int scale_) {
if (scale == scale_ || scale_ <= 0) return;
if (!(getPixelFormat().trueColour) && scale_ != 100) throw rfb::UnsupportedPixelFormatException();
ScaledPixelBuffer::setScale(scale_);
if (scale == 100) scaling = false;
else scaling = true;
recreateBuffers();
}
void ScaledDIBSectionBuffer::setPF(const PixelFormat &pf_) {
if (memcmp(&(ScaledPixelBuffer::pf), &pf_, sizeof(pf_)) == 0) return;
if (!pf_.trueColour && isScaling()) throw rfb::UnsupportedPixelFormatException();
pf = pf_;
if (scaling) {
if (src_buffer) {
src_buffer->setPF(pf);
} else {
src_buffer = new ManagedPixelBuffer(pf, src_width, src_height);
src_data = &(src_buffer->data);
}
if (memcmp(&(DIBSectionBuffer::getPF()), &RGB24, sizeof(PixelFormat)) != 0) {
DIBSectionBuffer::setPF(RGB24);
}
} else {
DIBSectionBuffer::setPF(pf);
}
}
void ScaledDIBSectionBuffer::setSize(int src_width_, int src_height_) {
if (src_width == src_width_ && src_height == src_height_) return;
src_width = src_width_;
src_height = src_height_;
// FIXME:
// Calculate the scale weight tabs must be in the ScalePixelBuffer class
recreateRowAccum();
freeWeightTabs();
calculateScaledBufferSize();
scaleFilters.makeWeightTabs(scaleFilterID, src_width, scaled_width, &xWeightTabs);
scaleFilters.makeWeightTabs(scaleFilterID, src_height, scaled_height, &yWeightTabs);
recreateBuffers();
}
void ScaledDIBSectionBuffer::setScaleWindowSize(int width, int height) {
if (scaled_width == width && scaled_height == height) return;
freeWeightTabs();
scaled_width = width_ = width;
scaled_height = height_ = height;
if (scaled_width == src_width && scaled_height == src_height) scaling = false;
else scaling = true;
scale_ratio_x = (double)scaled_width / src_width;
scale_ratio_y = (double)scaled_height / src_height;
scale = (int)(scale_ratio_x * 100);
// FIXME:
// Calculate the scale weight tabs must be in the ScalePixelBuffer class
scaleFilters.makeWeightTabs(scaleFilterID, src_width, scaled_width, &xWeightTabs);
scaleFilters.makeWeightTabs(scaleFilterID, src_height, scaled_height, &yWeightTabs);
recreateBuffers();
}
void ScaledDIBSectionBuffer::recreateScaledBuffer() {
if (scaling && memcmp(&(DIBSectionBuffer::getPF()), &RGB24, sizeof(PixelFormat)) != 0) {
DIBSectionBuffer::setPF(RGB24);
} else if (!scaling && (memcmp(&(DIBSectionBuffer::getPF()), &pf, sizeof(PixelFormat)) != 0)){
DIBSectionBuffer::setPF(pf);
} else {
DIBSectionBuffer::recreateBuffer();
}
}
void ScaledDIBSectionBuffer::recreateBuffers() {
// Recreate the source pixel buffer
if (src_width && src_height && pf.depth > 0) {
if (scaling) {
if (src_buffer) {
if (src_buffer->width() != src_width || src_buffer->width() != src_height)
src_buffer->setSize(src_width, src_height);
} else {
src_buffer = new ManagedPixelBuffer(pf, src_width, src_height);
src_data = &(src_buffer->data);
if (data) memcpy(src_buffer->data, data, src_width * src_height * (getPF().bpp/8));
}
}
}
// Recreate the scaled pixel buffer
recreateScaledBuffer();
if (scaling && src_buffer && data) scaleRect(Rect(0, 0, src_width, src_height));
else if (!scaling && src_buffer) {
if (src_buffer->data && data) memcpy(data, src_buffer->data, src_buffer->area() * (getPF().bpp/8));
delete src_buffer;
src_buffer = 0;
src_data = 0;
}
}
void ScaledDIBSectionBuffer::calculateScaledBufferSize() {
ScaledPixelBuffer::calculateScaledBufferSize();
width_ = scaled_width;
height_ = scaled_height;
}
void ScaledDIBSectionBuffer::fillRect(const Rect &dest, Pixel pix) {
if (scaling) {
src_buffer->fillRect(dest, pix);
scaleRect(dest);
} else {
DIBSectionBuffer::fillRect(dest, pix);
}
}
void ScaledDIBSectionBuffer::imageRect(const Rect &dest, const void* pixels, int stride) {
if (scaling) {
src_buffer->imageRect(dest, pixels, stride);
scaleRect(dest);
} else {
DIBSectionBuffer::imageRect(dest, pixels, stride);
}
}
void ScaledDIBSectionBuffer::copyRect(const Rect &dest, const Point &move_by_delta) {
if (scaling) {
src_buffer->copyRect(dest, move_by_delta);
scaleRect(dest);
} else {
DIBSectionBuffer::copyRect(dest, move_by_delta);
}
}
void ScaledDIBSectionBuffer::maskRect(const Rect& r, const void* pixels, const void* mask_) {
if (scaling) {
src_buffer->maskRect(r, pixels, mask_);
scaleRect(r);
} else {
DIBSectionBuffer::maskRect(r, pixels, mask_);
}
}
void ScaledDIBSectionBuffer::maskRect(const Rect& r, Pixel pixel, const void* mask_) {
if (scaling) {
src_buffer->maskRect(r, pixel, mask_);
scaleRect(r);
} else {
DIBSectionBuffer::maskRect(r, pixel, mask_);
}
}
|
