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- /* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
- * Copyright 2014 Pierre Ossman for Cendio AB
- *
- * 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/OutStream.h>
- #include <rfb/encodings.h>
- #include <rfb/SConnection.h>
- #include <rfb/PixelFormat.h>
- #include <rfb/PixelBuffer.h>
- #include <rfb/Palette.h>
- #include <rfb/RREEncoder.h>
-
- using namespace rfb;
-
- #define BPP 8
- #include <rfb/rreEncode.h>
- #undef BPP
- #define BPP 16
- #include <rfb/rreEncode.h>
- #undef BPP
- #define BPP 32
- #include <rfb/rreEncode.h>
- #undef BPP
-
- RREEncoder::RREEncoder(SConnection* conn) :
- Encoder(conn, encodingRRE, EncoderPlain)
- {
- }
-
- RREEncoder::~RREEncoder()
- {
- }
-
- bool RREEncoder::isSupported()
- {
- return conn->client.supportsEncoding(encodingRRE);
- }
-
- void RREEncoder::writeRect(const PixelBuffer* pb, const Palette& palette)
- {
- rdr::U8* imageBuf;
- int stride;
- rdr::U32 bg;
-
- int w = pb->width();
- int h = pb->height();
-
- if (palette.size() == 1) {
- Encoder::writeSolidRect(pb, palette);
- return;
- }
-
- // We have to have our own copy of the data as we modify it as
- // we find subrects.
- bufferCopy.setPF(pb->getPF());
- bufferCopy.setSize(w, h);
-
- imageBuf = bufferCopy.getBufferRW(pb->getRect(), &stride);
- pb->getImage(imageBuf, pb->getRect());
-
- if (palette.size() > 0)
- bg = palette.getColour(0);
- else {
- // Some crazy person is using this encoder for high colour
- // data. Just pick the first pixel as the background colour.
- bg = 0;
- memcpy(&bg, imageBuf, pb->getPF().bpp/8);
- }
-
- int nSubrects = -1;
- switch (pb->getPF().bpp) {
- case 8:
- nSubrects = rreEncode8((rdr::U8*)imageBuf, w, h, &mos, bg);
- break;
- case 16:
- nSubrects = rreEncode16((rdr::U16*)imageBuf, w, h, &mos, bg);
- break;
- case 32:
- nSubrects = rreEncode32((rdr::U32*)imageBuf, w, h, &mos, bg);
- break;
- }
-
- bufferCopy.commitBufferRW(pb->getRect());
-
- rdr::OutStream* os = conn->getOutStream();
- os->writeU32(nSubrects);
- os->writeBytes(mos.data(), mos.length());
- mos.clear();
- }
-
- void RREEncoder::writeSolidRect(int width, int height,
- const PixelFormat& pf,
- const rdr::U8* colour)
- {
- rdr::OutStream* os;
-
- os = conn->getOutStream();
-
- os->writeU32(0);
- os->writeBytes(colour, pf.bpp/8);
- }
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