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https://github.com/kasmtech/KasmVNC.git
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105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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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/InStream.h>
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#include <rdr/MemInStream.h>
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#include <rdr/OutStream.h>
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#include <rfb/ConnParams.h>
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#include <rfb/PixelBuffer.h>
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#include <rfb/HextileDecoder.h>
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using namespace rfb;
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#define BPP 8
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#include <rfb/hextileDecode.h>
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#undef BPP
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#define BPP 16
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#include <rfb/hextileDecode.h>
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#undef BPP
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#define BPP 32
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#include <rfb/hextileDecode.h>
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#undef BPP
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HextileDecoder::HextileDecoder() : Decoder(DecoderPlain)
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{
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}
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HextileDecoder::~HextileDecoder()
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{
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}
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void HextileDecoder::readRect(const Rect& r, rdr::InStream* is,
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const ConnParams& cp, rdr::OutStream* os)
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{
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Rect t;
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size_t bytesPerPixel;
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bytesPerPixel = cp.pf().bpp/8;
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for (t.tl.y = r.tl.y; t.tl.y < r.br.y; t.tl.y += 16) {
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t.br.y = __rfbmin(r.br.y, t.tl.y + 16);
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for (t.tl.x = r.tl.x; t.tl.x < r.br.x; t.tl.x += 16) {
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rdr::U8 tileType;
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t.br.x = __rfbmin(r.br.x, t.tl.x + 16);
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tileType = is->readU8();
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os->writeU8(tileType);
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if (tileType & hextileRaw) {
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os->copyBytes(is, t.area() * bytesPerPixel);
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continue;
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}
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if (tileType & hextileBgSpecified)
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os->copyBytes(is, bytesPerPixel);
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if (tileType & hextileFgSpecified)
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os->copyBytes(is, bytesPerPixel);
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if (tileType & hextileAnySubrects) {
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rdr::U8 nSubrects;
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nSubrects = is->readU8();
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os->writeU8(nSubrects);
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if (tileType & hextileSubrectsColoured)
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os->copyBytes(is, nSubrects * (bytesPerPixel + 2));
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else
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os->copyBytes(is, nSubrects * 2);
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}
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}
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}
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}
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void HextileDecoder::decodeRect(const Rect& r, const void* buffer,
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size_t buflen, const ConnParams& cp,
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ModifiablePixelBuffer* pb)
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{
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rdr::MemInStream is(buffer, buflen);
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const PixelFormat& pf = cp.pf();
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switch (pf.bpp) {
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case 8: hextileDecode8 (r, &is, pf, pb); break;
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case 16: hextileDecode16(r, &is, pf, pb); break;
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case 32: hextileDecode32(r, &is, pf, pb); break;
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}
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}
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