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Diffstat (limited to 'nxcomp/src/PutImage.cpp')
| -rw-r--r-- | nxcomp/src/PutImage.cpp | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/nxcomp/src/PutImage.cpp b/nxcomp/src/PutImage.cpp new file mode 100644 index 000000000..d14f922c3 --- /dev/null +++ b/nxcomp/src/PutImage.cpp @@ -0,0 +1,411 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ +/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ +/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ +/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ +/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/ +/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */ +/* */ +/* NXCOMP, NX protocol compression and NX extensions to this software */ +/* are copyright of the aforementioned persons and companies. */ +/* */ +/* Redistribution and use of the present software is allowed according */ +/* to terms specified in the file LICENSE.nxcomp which comes in the */ +/* source distribution. */ +/* */ +/* All rights reserved. */ +/* */ +/* NOTE: This software has received contributions from various other */ +/* contributors, only the core maintainers and supporters are listed as */ +/* copyright holders. Please contact us, if you feel you should be listed */ +/* as copyright holder, as well. */ +/* */ +/**************************************************************************/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "PutImage.h" + +#include "ClientCache.h" + +#include "EncodeBuffer.h" +#include "DecodeBuffer.h" + +#include "WriteBuffer.h" + +// +// Set the verbosity level. +// + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG +#undef DUMP + +// +// Constructors and destructors. +// + +PutImageStore::PutImageStore(StaticCompressor *compressor) + + : MessageStore(compressor) +{ + enableCache = PUTIMAGE_ENABLE_CACHE; + enableData = PUTIMAGE_ENABLE_DATA; + + // Since ProtoStep7 (#issue 108) + enableCompress = PUTIMAGE_ENABLE_COMPRESS_IF_PROTO_STEP_7; + + dataLimit = PUTIMAGE_DATA_LIMIT; + dataOffset = PUTIMAGE_DATA_OFFSET; + + cacheSlots = PUTIMAGE_CACHE_SLOTS; + cacheThreshold = PUTIMAGE_CACHE_THRESHOLD; + cacheLowerThreshold = PUTIMAGE_CACHE_LOWER_THRESHOLD; + + // Since ProtoStep8 (#issue 108) + enableSplit = PUTIMAGE_ENABLE_SPLIT_IF_PROTO_STEP_8; + + messages_ -> resize(cacheSlots); + + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + *i = NULL; + } + + temporary_ = NULL; +} + +PutImageStore::~PutImageStore() +{ + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + destroy(*i); + } + + destroy(temporary_); +} + +// +// Here are the methods to handle messages' content. +// + +int PutImageStore::encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer, + const unsigned int size, int bigEndian, + ChannelCache *channelCache) const +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Encoding full message identity.\n" << logofs_flush; + #endif + + encodeBuffer.encodeValue(GetUINT(buffer + 2, bigEndian), 16, 8); + + encodeBuffer.encodeValue((unsigned int) buffer[1], 2); + + encodeBuffer.encodeXidValue(GetULONG(buffer + 4, bigEndian), + clientCache -> drawableCache); + encodeBuffer.encodeXidValue(GetULONG(buffer + 8, bigEndian), + clientCache -> gcCache); + + unsigned int width = GetUINT(buffer + 12, bigEndian); + encodeBuffer.encodeCachedValue(width, 16, + clientCache -> putImageWidthCache, 8); + + unsigned int height = GetUINT(buffer + 14, bigEndian); + encodeBuffer.encodeCachedValue(height, 16, + clientCache -> putImageHeightCache, 8); + + unsigned int x = GetUINT(buffer + 16, bigEndian); + int xDiff = x - clientCache -> putImageLastX; + clientCache -> putImageLastX = x; + encodeBuffer.encodeCachedValue(xDiff, 16, + clientCache -> putImageXCache, 8); + + unsigned int y = GetUINT(buffer + 18, bigEndian); + int yDiff = y - clientCache -> putImageLastY; + clientCache -> putImageLastY = y; + encodeBuffer.encodeCachedValue(yDiff, 16, + clientCache -> putImageYCache, 8); + + encodeBuffer.encodeCachedValue(buffer[20], 8, + clientCache -> putImageLeftPadCache); + + encodeBuffer.encodeCachedValue(buffer[21], 8, + clientCache -> depthCache); + + #ifdef DEBUG + *logofs << name() << ": Encoded full message identity.\n" << logofs_flush; + #endif + + return 1; +} + +int PutImageStore::decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer, + unsigned int &size, int bigEndian, WriteBuffer *writeBuffer, + ChannelCache *channelCache) const +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Decoding full message identity.\n" << logofs_flush; + #endif + + unsigned int value; + unsigned char cValue; + + decodeBuffer.decodeValue(value, 16, 8); + + size = (value << 2); + + buffer = writeBuffer -> addMessage(size); + + decodeBuffer.decodeValue(value, 2); + buffer[1] = (unsigned char) value; + + decodeBuffer.decodeXidValue(value, clientCache -> drawableCache); + PutULONG(value, buffer + 4, bigEndian); + + decodeBuffer.decodeXidValue(value, clientCache -> gcCache); + PutULONG(value, buffer + 8, bigEndian); + + unsigned int width; + decodeBuffer.decodeCachedValue(width, 16, + clientCache -> putImageWidthCache, 8); + PutUINT(width, buffer + 12, bigEndian); + + unsigned int height; + decodeBuffer.decodeCachedValue(height, 16, + clientCache -> putImageHeightCache, 8); + PutUINT(height, buffer + 14, bigEndian); + + decodeBuffer.decodeCachedValue(value, 16, + clientCache -> putImageXCache, 8); + clientCache -> putImageLastX += value; + clientCache -> putImageLastX &= 0xffff; + PutUINT(clientCache -> putImageLastX, buffer + 16, bigEndian); + + decodeBuffer.decodeCachedValue(value, 16, + clientCache -> putImageYCache, 8); + clientCache -> putImageLastY += value; + clientCache -> putImageLastY &= 0xffff; + PutUINT(clientCache -> putImageLastY, buffer + 18, bigEndian); + + decodeBuffer.decodeCachedValue(cValue, 8, + clientCache -> putImageLeftPadCache); + buffer[20] = cValue; + + decodeBuffer.decodeCachedValue(cValue, 8, + clientCache -> depthCache); + buffer[21] = cValue; + + #ifdef DEBUG + *logofs << name() << ": Decoded full message identity.\n" << logofs_flush; + #endif + + return 1; +} + +int PutImageStore::parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + PutImageMessage *putImage = (PutImageMessage *) message; + + // + // Here is the fingerprint. + // + + putImage -> format = *(buffer + 1); + putImage -> depth = *(buffer + 21); + putImage -> left_pad = *(buffer + 20); + + putImage -> width = GetUINT(buffer + 12, bigEndian); + putImage -> height = GetUINT(buffer + 14, bigEndian); + putImage -> pos_x = GetUINT(buffer + 16, bigEndian); + putImage -> pos_y = GetUINT(buffer + 18, bigEndian); + + putImage -> drawable = GetULONG(buffer + 4, bigEndian); + putImage -> gcontext = GetULONG(buffer + 8, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Parsed identity for message at " << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +int PutImageStore::unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + PutImageMessage *putImage = (PutImageMessage *) message; + + // + // Fill all the message's fields. + // + + *(buffer + 1) = putImage -> format; + + PutULONG(putImage -> drawable, buffer + 4, bigEndian); + PutULONG(putImage -> gcontext, buffer + 8, bigEndian); + + PutUINT(putImage -> width, buffer + 12, bigEndian); + PutUINT(putImage -> height, buffer + 14, bigEndian); + PutUINT(putImage -> pos_x, buffer + 16, bigEndian); + PutUINT(putImage -> pos_y, buffer + 18, bigEndian); + + *(buffer + 20) = (unsigned char) putImage -> left_pad; + *(buffer + 21) = (unsigned char) putImage -> depth; + + #ifdef DEBUG + *logofs << name() << ": Unparsed identity for message at " + << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +void PutImageStore::dumpIdentity(const Message *message) const +{ + #ifdef DUMP + + PutImageMessage *putImage = (PutImageMessage *) message; + + *logofs << name() << ": Identity format " << (unsigned) putImage -> format + << ", depth " << (unsigned) putImage -> depth << ", left_pad " + << (unsigned) putImage -> left_pad << ", width " << putImage -> width + << ", height " << putImage -> height << ", pos_x " << putImage -> pos_x + << ", pos_y " << putImage -> pos_y << ", drawable " << putImage -> drawable + << ", gcontext " << putImage -> gcontext << ", size " << putImage -> size_ + << ".\n" << logofs_flush; + + #endif +} + +void PutImageStore::identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + // + // Fields format, width, height, left_pad, depth. + // + + md5_append(md5_state_, buffer + 1, 1); + md5_append(md5_state_, buffer + 12, 4); + md5_append(md5_state_, buffer + 20, 2); +} + +void PutImageStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const +{ + // + // Encode the variant part. + // + + PutImageMessage *putImage = (PutImageMessage *) message; + PutImageMessage *cachedPutImage = (PutImageMessage *) cachedMessage; + + ClientCache *clientCache = (ClientCache *) channelCache; + + #ifdef TEST + *logofs << name() << ": Encoding value " << putImage -> drawable + << " as drawable field.\n" << logofs_flush; + #endif + + encodeBuffer.encodeXidValue(putImage -> drawable, clientCache -> drawableCache); + + cachedPutImage -> drawable = putImage -> drawable; + + #ifdef TEST + *logofs << name() << ": Encoding value " << putImage -> gcontext + << " as gcontext field.\n" << logofs_flush; + #endif + + encodeBuffer.encodeXidValue(putImage -> gcontext, clientCache -> gcCache); + + cachedPutImage -> gcontext = putImage -> gcontext; + + #ifdef TEST + *logofs << name() << ": Encoding value " << putImage -> pos_x + << " as " << "pos_x" << " field.\n" << logofs_flush; + #endif + + unsigned short int diff_x = putImage -> pos_x - cachedPutImage -> pos_x; + + encodeBuffer.encodeCachedValue(diff_x, 16, + clientCache -> putImageXCache, 8); + + cachedPutImage -> pos_x = putImage -> pos_x; + + #ifdef TEST + *logofs << name() << ": Encoding value " << putImage -> pos_y + << " as " << "pos_y" << " field.\n" << logofs_flush; + #endif + + unsigned short int diff_y = putImage -> pos_y - cachedPutImage -> pos_y; + + encodeBuffer.encodeCachedValue(diff_y, 16, + clientCache -> putImageYCache, 8); + + cachedPutImage -> pos_y = putImage -> pos_y; +} + +void PutImageStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const +{ + // + // Decode the variant part. + // + + PutImageMessage *putImage = (PutImageMessage *) message; + + ClientCache *clientCache = (ClientCache *) channelCache; + + unsigned int value; + + decodeBuffer.decodeXidValue(value, clientCache -> drawableCache); + + putImage -> drawable = value; + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << putImage -> drawable + << " as drawable field.\n" << logofs_flush; + #endif + + decodeBuffer.decodeXidValue(value, clientCache -> gcCache); + + putImage -> gcontext = value; + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << putImage -> gcontext + << " as gcontext field.\n" << logofs_flush; + #endif + + decodeBuffer.decodeCachedValue(value, 16, + clientCache -> putImageXCache, 8); + + putImage -> pos_x += value; + putImage -> pos_x &= 0xffff; + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << putImage -> pos_x + << " as pos_x field.\n" << logofs_flush; + #endif + + decodeBuffer.decodeCachedValue(value, 16, + clientCache -> putImageYCache, 8); + + putImage -> pos_y += value; + putImage -> pos_y &= 0xffff; + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << putImage -> pos_y + << " as pos_y field.\n" << logofs_flush; + #endif +} |