Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 1 | /* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved. |
| 2 | * |
| 3 | * This is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This software is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this software; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 16 | * USA. |
| 17 | */ |
| 18 | #include <stdio.h> |
| 19 | #include <rdr/InStream.h> |
| 20 | #include <rfb/Exception.h> |
| 21 | #include <rfb/util.h> |
| 22 | #include <rfb/CMsgHandler.h> |
| 23 | #include <rfb/CMsgReader.h> |
| 24 | |
| 25 | using namespace rfb; |
| 26 | |
| 27 | CMsgReader::CMsgReader(CMsgHandler* handler_, rdr::InStream* is_) |
| 28 | : imageBufIdealSize(0), handler(handler_), is(is_), |
| 29 | imageBuf(0), imageBufSize(0) |
| 30 | { |
Peter Åstrand | 98fe98c | 2010-02-10 07:43:02 +0000 | [diff] [blame^] | 31 | for (int i = 0; i <= encodingMax; i++) { |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 32 | decoders[i] = 0; |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | CMsgReader::~CMsgReader() |
| 37 | { |
Peter Åstrand | 98fe98c | 2010-02-10 07:43:02 +0000 | [diff] [blame^] | 38 | for (int i = 0; i <= encodingMax; i++) { |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 39 | delete decoders[i]; |
| 40 | } |
| 41 | delete [] imageBuf; |
| 42 | } |
| 43 | |
| 44 | void CMsgReader::readSetColourMapEntries() |
| 45 | { |
| 46 | is->skip(1); |
| 47 | int firstColour = is->readU16(); |
| 48 | int nColours = is->readU16(); |
| 49 | rdr::U16Array rgbs(nColours * 3); |
| 50 | for (int i = 0; i < nColours * 3; i++) |
| 51 | rgbs.buf[i] = is->readU16(); |
| 52 | handler->setColourMapEntries(firstColour, nColours, rgbs.buf); |
| 53 | } |
| 54 | |
| 55 | void CMsgReader::readBell() |
| 56 | { |
| 57 | handler->bell(); |
| 58 | } |
| 59 | |
| 60 | void CMsgReader::readServerCutText() |
| 61 | { |
| 62 | is->skip(3); |
Adam Tkac | acf6c6b | 2009-02-13 12:42:05 +0000 | [diff] [blame] | 63 | rdr::U32 len = is->readU32(); |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 64 | if (len > 256*1024) { |
| 65 | is->skip(len); |
| 66 | fprintf(stderr,"cut text too long (%d bytes) - ignoring\n",len); |
| 67 | return; |
| 68 | } |
| 69 | CharArray ca(len+1); |
| 70 | ca.buf[len] = 0; |
| 71 | is->readBytes(ca.buf, len); |
| 72 | handler->serverCutText(ca.buf, len); |
| 73 | } |
| 74 | |
| 75 | void CMsgReader::readFramebufferUpdateStart() |
| 76 | { |
| 77 | handler->framebufferUpdateStart(); |
| 78 | } |
| 79 | |
| 80 | void CMsgReader::readFramebufferUpdateEnd() |
| 81 | { |
| 82 | handler->framebufferUpdateEnd(); |
| 83 | } |
| 84 | |
Peter Åstrand | 98fe98c | 2010-02-10 07:43:02 +0000 | [diff] [blame^] | 85 | void CMsgReader::readRect(const Rect& r, int encoding) |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 86 | { |
| 87 | if ((r.br.x > handler->cp.width) || (r.br.y > handler->cp.height)) { |
| 88 | fprintf(stderr, "Rect too big: %dx%d at %d,%d exceeds %dx%d\n", |
| 89 | r.width(), r.height(), r.tl.x, r.tl.y, |
| 90 | handler->cp.width, handler->cp.height); |
| 91 | throw Exception("Rect too big"); |
| 92 | } |
| 93 | |
| 94 | if (r.is_empty()) |
| 95 | fprintf(stderr, "Warning: zero size rect\n"); |
| 96 | |
| 97 | handler->beginRect(r, encoding); |
| 98 | |
| 99 | if (encoding == encodingCopyRect) { |
| 100 | readCopyRect(r); |
| 101 | } else { |
Adam Tkac | 5eeaa3b | 2008-11-18 16:00:14 +0000 | [diff] [blame] | 102 | |
| 103 | if (encoding > encodingMax) { |
| 104 | fprintf(stderr, "Unknown rect encoding %d\n", encoding); |
| 105 | throw Exception("Unknown rect encoding"); |
| 106 | } |
| 107 | |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 108 | if (!decoders[encoding]) { |
| 109 | decoders[encoding] = Decoder::createDecoder(encoding, this); |
| 110 | if (!decoders[encoding]) { |
| 111 | fprintf(stderr, "Unknown rect encoding %d\n", encoding); |
| 112 | throw Exception("Unknown rect encoding"); |
| 113 | } |
| 114 | } |
| 115 | decoders[encoding]->readRect(r, handler); |
| 116 | } |
| 117 | |
| 118 | handler->endRect(r, encoding); |
| 119 | } |
| 120 | |
| 121 | void CMsgReader::readCopyRect(const Rect& r) |
| 122 | { |
| 123 | int srcX = is->readU16(); |
| 124 | int srcY = is->readU16(); |
| 125 | handler->copyRect(r, srcX, srcY); |
| 126 | } |
| 127 | |
| 128 | void CMsgReader::readSetCursor(int width, int height, const Point& hotspot) |
| 129 | { |
| 130 | int data_len = width * height * (handler->cp.pf().bpp/8); |
| 131 | int mask_len = ((width+7)/8) * height; |
| 132 | rdr::U8Array data(data_len); |
| 133 | rdr::U8Array mask(mask_len); |
| 134 | |
| 135 | is->readBytes(data.buf, data_len); |
| 136 | is->readBytes(mask.buf, mask_len); |
| 137 | |
| 138 | handler->setCursor(width, height, hotspot, data.buf, mask.buf); |
| 139 | } |
| 140 | |
Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame] | 141 | rdr::U8* CMsgReader::getImageBuf(int required, int requested, int* nPixels) |
| 142 | { |
| 143 | int requiredBytes = required * (handler->cp.pf().bpp / 8); |
| 144 | int requestedBytes = requested * (handler->cp.pf().bpp / 8); |
| 145 | int size = requestedBytes; |
| 146 | if (size > imageBufIdealSize) size = imageBufIdealSize; |
| 147 | |
| 148 | if (size < requiredBytes) |
| 149 | size = requiredBytes; |
| 150 | |
| 151 | if (imageBufSize < size) { |
| 152 | imageBufSize = size; |
| 153 | delete [] imageBuf; |
| 154 | imageBuf = new rdr::U8[imageBufSize]; |
| 155 | } |
| 156 | if (nPixels) |
| 157 | *nPixels = imageBufSize / (handler->cp.pf().bpp / 8); |
| 158 | return imageBuf; |
| 159 | } |
| 160 | |
| 161 | int CMsgReader::bpp() |
| 162 | { |
| 163 | return handler->cp.pf().bpp; |
| 164 | } |