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https://github.com/kasmtech/KasmVNC.git
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116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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* Copyright 2014 Pierre Ossman for Cendio AB
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include <rdr/OutStream.h>
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#include <rfb/encodings.h>
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#include <rfb/SConnection.h>
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#include <rfb/PixelFormat.h>
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#include <rfb/PixelBuffer.h>
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#include <rfb/Palette.h>
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#include <rfb/RREEncoder.h>
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using namespace rfb;
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#define BPP 8
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#include <rfb/rreEncode.h>
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#undef BPP
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#define BPP 16
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#include <rfb/rreEncode.h>
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#undef BPP
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#define BPP 32
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#include <rfb/rreEncode.h>
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#undef BPP
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RREEncoder::RREEncoder(SConnection* conn) :
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Encoder(conn, encodingRRE, EncoderPlain, -1)
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{
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}
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RREEncoder::~RREEncoder()
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{
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}
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bool RREEncoder::isSupported()
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{
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return conn->cp.supportsEncoding(encodingRRE);
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}
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void RREEncoder::writeRect(const PixelBuffer* pb, const Palette& palette)
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{
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rdr::U8* imageBuf;
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int stride;
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rdr::U32 bg;
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int w = pb->width();
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int h = pb->height();
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if (palette.size() == 1) {
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Encoder::writeSolidRect(pb, palette);
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return;
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}
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// We have to have our own copy of the data as we modify it as
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// we find subrects.
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bufferCopy.setPF(pb->getPF());
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bufferCopy.setSize(w, h);
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imageBuf = bufferCopy.getBufferRW(pb->getRect(), &stride);
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pb->getImage(imageBuf, pb->getRect());
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if (palette.size() > 0)
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bg = palette.getColour(0);
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else {
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// Some crazy person is using this encoder for high colour
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// data. Just pick the first pixel as the background colour.
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bg = 0;
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memcpy(&bg, imageBuf, pb->getPF().bpp/8);
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}
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int nSubrects = -1;
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switch (pb->getPF().bpp) {
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case 8:
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nSubrects = rreEncode8((rdr::U8*)imageBuf, w, h, &mos, bg);
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break;
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case 16:
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nSubrects = rreEncode16((rdr::U16*)imageBuf, w, h, &mos, bg);
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break;
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case 32:
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nSubrects = rreEncode32((rdr::U32*)imageBuf, w, h, &mos, bg);
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break;
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}
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bufferCopy.commitBufferRW(pb->getRect());
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rdr::OutStream* os = conn->getOutStream();
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os->writeU32(nSubrects);
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os->writeBytes(mos.data(), mos.length());
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mos.clear();
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}
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void RREEncoder::writeSolidRect(int width, int height,
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const PixelFormat& pf,
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const rdr::U8* colour)
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{
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rdr::OutStream* os;
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os = conn->getOutStream();
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os->writeU32(0);
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os->writeBytes(colour, pf.bpp/8);
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}
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