mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-12-12 01:40:46 +01:00
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. 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.
|
|
*/
|
|
#include <rdr/OutStream.h>
|
|
#include <rfb/encodings.h>
|
|
#include <rfb/SConnection.h>
|
|
#include <rfb/PixelFormat.h>
|
|
#include <rfb/PixelBuffer.h>
|
|
#include <rfb/Palette.h>
|
|
#include <rfb/RREEncoder.h>
|
|
|
|
using namespace rfb;
|
|
|
|
#define BPP 8
|
|
#include <rfb/rreEncode.h>
|
|
#undef BPP
|
|
#define BPP 16
|
|
#include <rfb/rreEncode.h>
|
|
#undef BPP
|
|
#define BPP 32
|
|
#include <rfb/rreEncode.h>
|
|
#undef BPP
|
|
|
|
RREEncoder::RREEncoder(SConnection* conn) :
|
|
Encoder(conn, encodingRRE, EncoderPlain, -1)
|
|
{
|
|
}
|
|
|
|
RREEncoder::~RREEncoder()
|
|
{
|
|
}
|
|
|
|
bool RREEncoder::isSupported()
|
|
{
|
|
return conn->cp.supportsEncoding(encodingRRE);
|
|
}
|
|
|
|
void RREEncoder::writeRect(const PixelBuffer* pb, const Palette& palette)
|
|
{
|
|
rdr::U8* imageBuf;
|
|
int stride;
|
|
rdr::U32 bg;
|
|
|
|
int w = pb->width();
|
|
int h = pb->height();
|
|
|
|
if (palette.size() == 1) {
|
|
Encoder::writeSolidRect(pb, palette);
|
|
return;
|
|
}
|
|
|
|
// We have to have our own copy of the data as we modify it as
|
|
// we find subrects.
|
|
bufferCopy.setPF(pb->getPF());
|
|
bufferCopy.setSize(w, h);
|
|
|
|
imageBuf = bufferCopy.getBufferRW(pb->getRect(), &stride);
|
|
pb->getImage(imageBuf, pb->getRect());
|
|
|
|
if (palette.size() > 0)
|
|
bg = palette.getColour(0);
|
|
else {
|
|
// Some crazy person is using this encoder for high colour
|
|
// data. Just pick the first pixel as the background colour.
|
|
bg = 0;
|
|
memcpy(&bg, imageBuf, pb->getPF().bpp/8);
|
|
}
|
|
|
|
int nSubrects = -1;
|
|
switch (pb->getPF().bpp) {
|
|
case 8:
|
|
nSubrects = rreEncode8((rdr::U8*)imageBuf, w, h, &mos, bg);
|
|
break;
|
|
case 16:
|
|
nSubrects = rreEncode16((rdr::U16*)imageBuf, w, h, &mos, bg);
|
|
break;
|
|
case 32:
|
|
nSubrects = rreEncode32((rdr::U32*)imageBuf, w, h, &mos, bg);
|
|
break;
|
|
}
|
|
|
|
bufferCopy.commitBufferRW(pb->getRect());
|
|
|
|
rdr::OutStream* os = conn->getOutStream();
|
|
os->writeU32(nSubrects);
|
|
os->writeBytes(mos.data(), mos.length());
|
|
mos.clear();
|
|
}
|
|
|
|
void RREEncoder::writeSolidRect(int width, int height,
|
|
const PixelFormat& pf,
|
|
const rdr::U8* colour)
|
|
{
|
|
rdr::OutStream* os;
|
|
|
|
os = conn->getOutStream();
|
|
|
|
os->writeU32(0);
|
|
os->writeBytes(colour, pf.bpp/8);
|
|
}
|