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https://github.com/kasmtech/KasmVNC.git
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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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* Copyright (C) 2005 Constantin Kaplinsky. 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 <rfb/encodings.h>
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#include <rfb/SConnection.h>
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#include <rfb/HextileEncoder.h>
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#include <rfb/PixelBuffer.h>
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#include <rfb/Configuration.h>
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using namespace rfb;
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BoolParameter improvedHextile("ImprovedHextile",
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"Use improved compression algorithm for Hextile "
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"encoding which achieves better compression "
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"ratios by the cost of using more CPU time",
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true);
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#define BPP 8
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#include <rfb/hextileEncode.h>
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#include <rfb/hextileEncodeBetter.h>
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#undef BPP
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#define BPP 16
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#include <rfb/hextileEncode.h>
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#include <rfb/hextileEncodeBetter.h>
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#undef BPP
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#define BPP 32
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#include <rfb/hextileEncode.h>
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#include <rfb/hextileEncodeBetter.h>
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#undef BPP
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HextileEncoder::HextileEncoder(SConnection* conn) :
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Encoder(conn, encodingHextile, EncoderPlain, -1)
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{
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}
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HextileEncoder::~HextileEncoder()
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{
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}
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bool HextileEncoder::isSupported()
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{
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return conn->cp.supportsEncoding(encodingHextile);
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}
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void HextileEncoder::writeRect(const PixelBuffer* pb, const Palette& palette)
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{
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rdr::OutStream* os = conn->getOutStream();
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switch (pb->getPF().bpp) {
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case 8:
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if (improvedHextile) {
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hextileEncodeBetter8(os, pb);
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} else {
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hextileEncode8(os, pb);
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}
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break;
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case 16:
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if (improvedHextile) {
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hextileEncodeBetter16(os, pb);
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} else {
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hextileEncode16(os, pb);
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}
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break;
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case 32:
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if (improvedHextile) {
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hextileEncodeBetter32(os, pb);
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} else {
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hextileEncode32(os, pb);
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}
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break;
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}
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}
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void HextileEncoder::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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int tiles;
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os = conn->getOutStream();
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tiles = ((width + 15)/16) * ((height + 15)/16);
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os->writeU8(hextileBgSpecified);
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os->writeBytes(colour, pf.bpp/8);
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tiles--;
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while (tiles--)
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os->writeU8(0);
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}
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