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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, -1)
{
}
RREEncoder::~RREEncoder()
{
}
bool RREEncoder::isSupported()
{
return conn->cp.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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