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Diffstat (limited to 'nxcomp/RenderPictureFilter.cpp')
| -rw-r--r-- | nxcomp/RenderPictureFilter.cpp | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/nxcomp/RenderPictureFilter.cpp b/nxcomp/RenderPictureFilter.cpp new file mode 100644 index 000000000..b48fdca15 --- /dev/null +++ b/nxcomp/RenderPictureFilter.cpp @@ -0,0 +1,266 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/. */ +/* */ +/* NXCOMP, NX protocol compression and NX extensions to this software */ +/* are copyright of NoMachine. Redistribution and use of the present */ +/* software is allowed according to terms specified in the file LICENSE */ +/* which comes in the source distribution. */ +/* */ +/* Check http://www.nomachine.com/licensing.html for applicability. */ +/* */ +/* NX and NoMachine are trademarks of Medialogic S.p.A. */ +/* */ +/* All rights reserved. */ +/* */ +/**************************************************************************/ + +// +// Include the template for +// this message class. +// + +#include "RenderPictureFilter.h" + +// +// Set the verbosity level. +// + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG + +#include MESSAGE_TAGS + +// +// Message handling methods. +// + +MESSAGE_BEGIN_ENCODE_SIZE +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Encoding value " + << ((size - MESSAGE_OFFSET) >> 2) << ".\n" + << logofs_flush; + #endif + + encodeBuffer.encodeCachedValue((size - MESSAGE_OFFSET) >> 2, 16, + clientCache -> renderLengthCache, 5); + + #ifdef TEST + *logofs << name() << ": Encoded size with value " + << size << ".\n" << logofs_flush; + #endif +} +MESSAGE_END_ENCODE_SIZE + +MESSAGE_BEGIN_DECODE_SIZE +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + decodeBuffer.decodeCachedValue(size, 16, + clientCache -> renderLengthCache, 5); + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << size + << ".\n" << logofs_flush; + #endif + + size = MESSAGE_OFFSET + (size << 2); + + buffer = writeBuffer -> addMessage(size); + + #ifdef TEST + *logofs << name() << ": Decoded size with value " + << size << ".\n" << logofs_flush; + #endif +} +MESSAGE_END_DECODE_SIZE + +MESSAGE_BEGIN_ENCODE_MESSAGE +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + encodeBuffer.encodeXidValue(GetULONG(buffer + 4, bigEndian), + clientCache -> renderSrcPictureCache); + + encodeBuffer.encodeCachedValue(GetUINT(buffer + 8, bigEndian), 16, + clientCache -> renderLengthCache, 5); + + #ifdef TEST + *logofs << name() << ": Encoded message. Type is " + << (unsigned int) *(buffer + 1) << " size is " + << size << ".\n" << logofs_flush; + #endif +} +MESSAGE_END_ENCODE_MESSAGE + +MESSAGE_BEGIN_DECODE_MESSAGE +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + unsigned int value; + + *(buffer + 1) = type; + + decodeBuffer.decodeXidValue(value, + clientCache -> renderSrcPictureCache); + + PutULONG(value, buffer + 4, bigEndian); + + decodeBuffer.decodeCachedValue(value, 16, + clientCache -> renderLengthCache, 5); + + PutUINT(value, buffer + 8, bigEndian); + + #ifdef TEST + *logofs << name() << ": Decoded message. Type is " + << (unsigned int) type << " size is " << size + << ".\n" << logofs_flush; + #endif +} +MESSAGE_END_DECODE_MESSAGE + +MESSAGE_BEGIN_ENCODE_DATA +{ + encodeCharData(encodeBuffer, buffer, MESSAGE_OFFSET, + size, bigEndian, channelCache); + + #ifdef TEST + *logofs << name() << ": Encoded " << size - MESSAGE_OFFSET + << " bytes of data.\n" << logofs_flush; + #endif +} +MESSAGE_END_ENCODE_DATA + +MESSAGE_BEGIN_DECODE_DATA +{ + decodeCharData(decodeBuffer, buffer, MESSAGE_OFFSET, + size, bigEndian, channelCache); + + #ifdef TEST + *logofs << name() << ": Decoded " << size - MESSAGE_OFFSET + << " bytes of data.\n" << logofs_flush; + #endif +} +MESSAGE_END_DECODE_DATA + +MESSAGE_BEGIN_PARSE_IDENTITY +{ + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + renderExtension -> data.picture_filter.type = *(buffer + 1); + + renderExtension -> data.picture_filter.src_id = GetULONG(buffer + 4, bigEndian); + renderExtension -> data.picture_filter.num_elm = GetUINT(buffer + 8, bigEndian); + + // + // Clean the padding bytes. This + // should be the purpose of the + // filter. + // + + #ifdef TEST + *logofs << name() << ": Cleaning " + << RoundUp4(renderExtension -> data.picture_filter.num_elm) - + renderExtension -> data.picture_filter.num_elm << " bytes " + << "at offset " << MESSAGE_OFFSET + renderExtension -> + data.picture_filter.num_elm << " with " << renderExtension -> + data.picture_filter.num_elm << " elements and size " + << renderExtension -> size_ << ".\n" << logofs_flush; + #endif + + if (size >= MESSAGE_OFFSET + renderExtension -> + data.picture_filter.num_elm) + { + unsigned char *next = (unsigned char *) buffer + + MESSAGE_OFFSET + renderExtension -> + data.picture_filter.num_elm; + + while (next < buffer + size) + { + *next++ = '\0'; + } + } + + #ifdef TEST + *logofs << name() << ": Parsed identity. Type is " + << (unsigned int) renderExtension -> data.picture_filter.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif +} +MESSAGE_END_PARSE_IDENTITY + +MESSAGE_BEGIN_UNPARSE_IDENTITY +{ + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + *(buffer + 1) = renderExtension -> data.picture_filter.type; + + PutULONG(renderExtension -> data.picture_filter.src_id, buffer + 4, bigEndian); + PutUINT(renderExtension -> data.picture_filter.num_elm, buffer + 8, bigEndian); + + #ifdef TEST + *logofs << name() << ": Unparsed identity. Type is " + << (unsigned int) renderExtension -> data.picture_filter.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif +} +MESSAGE_END_UNPARSE_IDENTITY + +MESSAGE_BEGIN_IDENTITY_CHECKSUM +{ + // + // Include the length of the filter name + // in the checksum. + // + + md5_append(md5_state, buffer + 1, 3); + md5_append(md5_state, buffer + 8, 2); +} +MESSAGE_END_IDENTITY_CHECKSUM + +MESSAGE_BEGIN_ENCODE_UPDATE +{ + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + RenderExtensionMessage *cachedRenderExtension = (RenderExtensionMessage *) cachedMessage; + + ClientCache *clientCache = (ClientCache *) channelCache; + + encodeBuffer.encodeXidValue(renderExtension -> data.picture_filter.src_id, + clientCache -> renderSrcPictureCache); + + cachedRenderExtension -> data.picture_filter.src_id = + renderExtension -> data.picture_filter.src_id; + + #ifdef TEST + *logofs << name() << ": Encoded update. Type is " + << (unsigned int) renderExtension -> data.picture_filter.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif +} +MESSAGE_END_ENCODE_UPDATE + +MESSAGE_BEGIN_DECODE_UPDATE +{ + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + ClientCache *clientCache = (ClientCache *) channelCache; + + decodeBuffer.decodeXidValue(renderExtension -> data.picture_filter.src_id, + clientCache -> renderSrcPictureCache); + + #ifdef TEST + *logofs << name() << ": Decoded update. Type is " + << (unsigned int) renderExtension -> data.picture_filter.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif +} +MESSAGE_END_DECODE_UPDATE |