mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-23 08:33:22 +01:00
99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
/* Copyright (C) 2000-2003 Constantin Kaplinsky. All Rights Reserved.
|
|
* Copyright (C) 2011 D. R. Commander. 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.
|
|
*/
|
|
|
|
#define CONCAT2(a,b) a##b
|
|
#define CONCAT2E(a,b) CONCAT2(a,b)
|
|
|
|
#define UBPP CONCAT2E(U,BPP)
|
|
|
|
inline bool EncodeManager::checkSolidTile(const Rect& r,
|
|
rdr::UBPP colourValue,
|
|
const PixelBuffer *pb)
|
|
{
|
|
int w, h;
|
|
const rdr::UBPP* buffer;
|
|
int stride, pad;
|
|
|
|
w = r.width();
|
|
h = r.height();
|
|
|
|
buffer = (const rdr::UBPP*)pb->getBuffer(r, &stride);
|
|
pad = stride - w;
|
|
|
|
while (h--) {
|
|
int w_ = w;
|
|
while (w_--) {
|
|
if (*buffer != colourValue)
|
|
return false;
|
|
buffer++;
|
|
}
|
|
buffer += pad;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
inline bool EncodeManager::analyseRect(int width, int height,
|
|
const rdr::UBPP* buffer, int stride,
|
|
struct RectInfo *info, int maxColours) const
|
|
{
|
|
int pad;
|
|
|
|
rdr::UBPP colour;
|
|
int count;
|
|
|
|
info->rleRuns = 0;
|
|
info->palette->clear();
|
|
|
|
pad = stride - width;
|
|
|
|
// For efficiency, we only update the palette on changes in colour
|
|
colour = buffer[0];
|
|
count = 0;
|
|
while (height--) {
|
|
int w_ = width;
|
|
while (w_--) {
|
|
if (*buffer != colour) {
|
|
if (!info->palette->insert(colour, count))
|
|
return false;
|
|
if (info->palette->size() > maxColours)
|
|
return false;
|
|
|
|
// FIXME: This doesn't account for switching lines
|
|
info->rleRuns++;
|
|
|
|
colour = *buffer;
|
|
count = 0;
|
|
}
|
|
buffer++;
|
|
count++;
|
|
}
|
|
buffer += pad;
|
|
}
|
|
|
|
// Make sure the final pixels also get counted
|
|
if (!info->palette->insert(colour, count))
|
|
return false;
|
|
if (info->palette->size() > maxColours)
|
|
return false;
|
|
|
|
return true;
|
|
}
|