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- /* Copyright (C) 2000-2003 Constantin Kaplinsky. All Rights Reserved.
- * Copyright 2004-2005 Cendio AB.
- * Copyright (C) 2011 D. R. Commander. 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 <rfb/CMsgReader.h>
- #include <rfb/CConnection.h>
- #include <rfb/PixelBuffer.h>
- #include <rfb/TightDecoder.h>
-
- using namespace rfb;
-
- #define TIGHT_MAX_WIDTH 2048
-
- #define BPP 8
- #include <rfb/tightDecode.h>
- #undef BPP
- #define BPP 16
- #include <rfb/tightDecode.h>
- #undef BPP
- #define BPP 32
- #include <rfb/tightDecode.h>
- #undef BPP
-
- TightDecoder::TightDecoder(CConnection* conn) : Decoder(conn)
- {
- }
-
- TightDecoder::~TightDecoder()
- {
- }
-
- void TightDecoder::readRect(const Rect& r, ModifiablePixelBuffer* pb)
- {
- is = conn->getInStream();
- this->pb = pb;
- clientpf = pb->getPF();
- serverpf = conn->cp.pf();
-
- if (clientpf.equal(serverpf)) {
- /* Decode directly into the framebuffer (fast path) */
- directDecode = true;
- } else {
- /* Decode into an intermediate buffer and use pixel translation */
- directDecode = false;
- }
-
- switch (serverpf.bpp) {
- case 8:
- tightDecode8 (r); break;
- case 16:
- tightDecode16(r); break;
- case 32:
- tightDecode32(r); break;
- }
- }
-
- rdr::U32 TightDecoder::readCompact(rdr::InStream* is)
- {
- rdr::U8 b;
- rdr::U32 result;
-
- b = is->readU8();
- result = (int)b & 0x7F;
- if (b & 0x80) {
- b = is->readU8();
- result |= ((int)b & 0x7F) << 7;
- if (b & 0x80) {
- b = is->readU8();
- result |= ((int)b & 0xFF) << 14;
- }
- }
-
- return result;
- }
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