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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 <stdio.h>
- #include <rdr/InStream.h>
- #include <rfb/Exception.h>
- #include <rfb/util.h>
- #include <rfb/CMsgHandler.h>
- #include <rfb/CMsgReader.h>
-
- using namespace rfb;
-
- CMsgReader::CMsgReader(CMsgHandler* handler_, rdr::InStream* is_)
- : imageBufIdealSize(0), handler(handler_), is(is_),
- imageBuf(0), imageBufSize(0)
- {
- for (int i = 0; i <= encodingMax; i++) {
- decoders[i] = 0;
- }
- }
-
- CMsgReader::~CMsgReader()
- {
- for (int i = 0; i <= encodingMax; i++) {
- delete decoders[i];
- }
- delete [] imageBuf;
- }
-
- void CMsgReader::readSetColourMapEntries()
- {
- is->skip(1);
- int firstColour = is->readU16();
- int nColours = is->readU16();
- rdr::U16Array rgbs(nColours * 3);
- for (int i = 0; i < nColours * 3; i++)
- rgbs.buf[i] = is->readU16();
- handler->setColourMapEntries(firstColour, nColours, rgbs.buf);
- }
-
- void CMsgReader::readBell()
- {
- handler->bell();
- }
-
- void CMsgReader::readServerCutText()
- {
- is->skip(3);
- rdr::U32 len = is->readU32();
- if (len > 256*1024) {
- is->skip(len);
- fprintf(stderr,"cut text too long (%d bytes) - ignoring\n",len);
- return;
- }
- CharArray ca(len+1);
- ca.buf[len] = 0;
- is->readBytes(ca.buf, len);
- handler->serverCutText(ca.buf, len);
- }
-
- void CMsgReader::readFramebufferUpdateStart()
- {
- handler->framebufferUpdateStart();
- }
-
- void CMsgReader::readFramebufferUpdateEnd()
- {
- handler->framebufferUpdateEnd();
- }
-
- void CMsgReader::readRect(const Rect& r, int encoding)
- {
- if ((r.br.x > handler->cp.width) || (r.br.y > handler->cp.height)) {
- fprintf(stderr, "Rect too big: %dx%d at %d,%d exceeds %dx%d\n",
- r.width(), r.height(), r.tl.x, r.tl.y,
- handler->cp.width, handler->cp.height);
- throw Exception("Rect too big");
- }
-
- if (r.is_empty())
- fprintf(stderr, "Warning: zero size rect\n");
-
- handler->beginRect(r, encoding);
-
- if (encoding == encodingCopyRect) {
- readCopyRect(r);
- } else {
-
- if (encoding > encodingMax) {
- fprintf(stderr, "Unknown rect encoding %d\n", encoding);
- throw Exception("Unknown rect encoding");
- }
-
- if (!decoders[encoding]) {
- decoders[encoding] = Decoder::createDecoder(encoding, this);
- if (!decoders[encoding]) {
- fprintf(stderr, "Unknown rect encoding %d\n", encoding);
- throw Exception("Unknown rect encoding");
- }
- }
- decoders[encoding]->readRect(r, handler);
- }
-
- handler->endRect(r, encoding);
- }
-
- void CMsgReader::readCopyRect(const Rect& r)
- {
- int srcX = is->readU16();
- int srcY = is->readU16();
- handler->copyRect(r, srcX, srcY);
- }
-
- void CMsgReader::readSetCursor(int width, int height, const Point& hotspot)
- {
- int data_len = width * height * (handler->cp.pf().bpp/8);
- int mask_len = ((width+7)/8) * height;
- rdr::U8Array data(data_len);
- rdr::U8Array mask(mask_len);
-
- is->readBytes(data.buf, data_len);
- is->readBytes(mask.buf, mask_len);
-
- handler->setCursor(width, height, hotspot, data.buf, mask.buf);
- }
-
- rdr::U8* CMsgReader::getImageBuf(int required, int requested, int* nPixels)
- {
- int requiredBytes = required * (handler->cp.pf().bpp / 8);
- int requestedBytes = requested * (handler->cp.pf().bpp / 8);
- int size = requestedBytes;
- if (size > imageBufIdealSize) size = imageBufIdealSize;
-
- if (size < requiredBytes)
- size = requiredBytes;
-
- if (imageBufSize < size) {
- imageBufSize = size;
- delete [] imageBuf;
- imageBuf = new rdr::U8[imageBufSize];
- }
- if (nPixels)
- *nPixels = imageBufSize / (handler->cp.pf().bpp / 8);
- return imageBuf;
- }
-
- int CMsgReader::bpp()
- {
- return handler->cp.pf().bpp;
- }
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