mirror of
https://github.com/TigerVNC/tigervnc.git
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![Constantin Kaplinsky](/assets/img/avatar_default.png)
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
181 lines
4.8 KiB
C++
181 lines
4.8 KiB
C++
/* Copyright (C) 2002-2004 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 <stdio.h>
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#include <assert.h>
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#include <rdr/OutStream.h>
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#include <rfb/msgTypes.h>
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#include <rfb/ColourMap.h>
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#include <rfb/ConnParams.h>
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#include <rfb/UpdateTracker.h>
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#include <rfb/SMsgWriter.h>
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#include <rfb/LogWriter.h>
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using namespace rfb;
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static LogWriter vlog("SMsgWriter");
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SMsgWriter::SMsgWriter(ConnParams* cp_, rdr::OutStream* os_)
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: imageBufIdealSize(0), cp(cp_), os(os_), lenBeforeRect(0),
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currentEncoding(0), updatesSent(0), rawBytesEquivalent(0),
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imageBuf(0), imageBufSize(0)
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{
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for (unsigned int i = 0; i <= encodingMax; i++) {
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encoders[i] = 0;
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bytesSent[i] = 0;
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rectsSent[i] = 0;
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}
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}
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SMsgWriter::~SMsgWriter()
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{
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vlog.info("framebuffer updates %d",updatesSent);
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int bytes = 0;
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for (unsigned int i = 0; i <= encodingMax; i++) {
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delete encoders[i];
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if (i != encodingCopyRect)
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bytes += bytesSent[i];
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if (rectsSent[i])
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vlog.info(" %s rects %d, bytes %d",
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encodingName(i), rectsSent[i], bytesSent[i]);
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}
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vlog.info(" raw bytes equivalent %d, compression ratio %f",
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rawBytesEquivalent, (double)rawBytesEquivalent / bytes);
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delete [] imageBuf;
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}
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void SMsgWriter::writeSetColourMapEntries(int firstColour, int nColours,
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ColourMap* cm)
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{
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startMsg(msgTypeSetColourMapEntries);
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os->pad(1);
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os->writeU16(firstColour);
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os->writeU16(nColours);
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for (int i = firstColour; i < firstColour+nColours; i++) {
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int r, g, b;
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cm->lookup(i, &r, &g, &b);
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os->writeU16(r);
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os->writeU16(g);
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os->writeU16(b);
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}
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endMsg();
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}
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void SMsgWriter::writeBell()
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{
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startMsg(msgTypeBell);
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endMsg();
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}
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void SMsgWriter::writeServerCutText(const char* str, int len)
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{
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startMsg(msgTypeServerCutText);
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os->pad(3);
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os->writeU32(len);
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os->writeBytes(str, len);
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endMsg();
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}
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void SMsgWriter::writeFramebufferUpdate(const UpdateInfo& ui, ImageGetter* ig,
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Region* updatedRegion)
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{
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writeFramebufferUpdateStart(ui.numRects());
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writeRects(ui, ig, updatedRegion);
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writeFramebufferUpdateEnd();
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}
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void SMsgWriter::writeRects(const UpdateInfo& ui, ImageGetter* ig,
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Region* updatedRegion)
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{
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std::vector<Rect> rects;
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std::vector<Rect>::const_iterator i;
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updatedRegion->copyFrom(ui.changed);
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updatedRegion->assign_union(ui.copied);
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ui.copied.get_rects(&rects, ui.copy_delta.x <= 0, ui.copy_delta.y <= 0);
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for (i = rects.begin(); i != rects.end(); i++)
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writeCopyRect(*i, i->tl.x - ui.copy_delta.x, i->tl.y - ui.copy_delta.y);
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ui.changed.get_rects(&rects);
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for (i = rects.begin(); i != rects.end(); i++) {
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Rect actual;
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if (!writeRect(*i, ig, &actual)) {
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updatedRegion->assign_subtract(*i);
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updatedRegion->assign_union(actual);
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}
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}
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}
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bool SMsgWriter::needFakeUpdate()
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{
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return false;
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}
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bool SMsgWriter::writeRect(const Rect& r, ImageGetter* ig, Rect* actual)
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{
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return writeRect(r, cp->currentEncoding(), ig, actual);
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}
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bool SMsgWriter::writeRect(const Rect& r, unsigned int encoding,
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ImageGetter* ig, Rect* actual)
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{
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if (!encoders[encoding]) {
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encoders[encoding] = Encoder::createEncoder(encoding, this);
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assert(encoders[encoding]);
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}
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return encoders[encoding]->writeRect(r, ig, actual);
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}
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void SMsgWriter::writeCopyRect(const Rect& r, int srcX, int srcY)
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{
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startRect(r,encodingCopyRect);
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os->writeU16(srcX);
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os->writeU16(srcY);
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endRect();
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}
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void SMsgWriter::setOutStream(rdr::OutStream* os_)
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{
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os = os_;
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}
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rdr::U8* SMsgWriter::getImageBuf(int required, int requested, int* nPixels)
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{
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int requiredBytes = required * (cp->pf().bpp / 8);
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int requestedBytes = requested * (cp->pf().bpp / 8);
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int size = requestedBytes;
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if (size > imageBufIdealSize) size = imageBufIdealSize;
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if (size < requiredBytes)
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size = requiredBytes;
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if (imageBufSize < size) {
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imageBufSize = size;
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delete [] imageBuf;
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imageBuf = new rdr::U8[imageBufSize];
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}
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if (nPixels)
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*nPixels = imageBufSize / (cp->pf().bpp / 8);
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return imageBuf;
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}
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int SMsgWriter::bpp()
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{
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return cp->pf().bpp;
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}
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