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