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RenderTrapezoids.cpp
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/**************************************************************************/
/* */
/* 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 "RenderTrapezoids.h"
//
// Set the verbosity level.
//
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
#include MESSAGE_TAGS
//
// Message handling methods.
//
MESSAGE_BEGIN_ENCODE_SIZE
{
//
// The trapezoid data is made up of a structure
// containing a top and bottom coordinate in 4
// bytes format, plus two lines, each represent-
// ed as four points in 4 bytes format. Thus
// each trapezoid is 4 * 2 + (4 * 4) * 2 = 40
// bytes. Bytes are all padded to an long int,
// so we don't need to clean the message.
//
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.encodeCachedValue(*(buffer + 4), 8,
clientCache -> renderOpCache);
encodeBuffer.encodeXidValue(GetULONG(buffer + 8, bigEndian),
clientCache -> renderSrcPictureCache);
encodeBuffer.encodeXidValue(GetULONG(buffer + 12, bigEndian),
clientCache -> renderDstPictureCache);
encodeBuffer.encodeCachedValue(GetULONG(buffer + 16, bigEndian), 32,
clientCache -> renderFormatCache);
encodeBuffer.encodeDiffCachedValue(GetUINT(buffer + 20, bigEndian),
clientCache -> renderLastX, 16,
clientCache -> renderXCache, 11);
encodeBuffer.encodeDiffCachedValue(GetUINT(buffer + 22, bigEndian),
clientCache -> renderLastY, 16,
clientCache -> renderYCache, 11);
#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.decodeCachedValue(*(buffer + 4), 8,
clientCache -> renderOpCache);
decodeBuffer.decodeXidValue(value,
clientCache -> renderSrcPictureCache);
PutULONG(value, buffer + 8, bigEndian);
decodeBuffer.decodeXidValue(value,
clientCache -> renderDstPictureCache);
PutULONG(value, buffer + 12, bigEndian);
decodeBuffer.decodeCachedValue(value, 32,
clientCache -> renderFormatCache);
PutULONG(value, buffer + 16, bigEndian);
decodeBuffer.decodeDiffCachedValue(value,
clientCache -> renderLastX, 16,
clientCache -> renderXCache, 11);
PutUINT(clientCache -> renderLastX, buffer + 20, bigEndian);
decodeBuffer.decodeDiffCachedValue(value,
clientCache -> renderLastY, 16,
clientCache -> renderYCache, 11);
PutUINT(clientCache -> renderLastY, buffer + 22, 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
{
if (size > MESSAGE_OFFSET)
{
encodeLongData(encodeBuffer, buffer, MESSAGE_OFFSET,
size, bigEndian, channelCache);
}
#ifdef TEST
*logofs << name() << ": Encoded " << size - MESSAGE_OFFSET
<< " bytes of text data.\n" << logofs_flush;
#endif
}
MESSAGE_END_ENCODE_DATA
MESSAGE_BEGIN_DECODE_DATA
{
if (size > MESSAGE_OFFSET)
{
decodeLongData(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.trapezoids.type = *(buffer + 1);
renderExtension -> data.trapezoids.op = *(buffer + 4);
renderExtension -> data.trapezoids.src_id = GetULONG(buffer + 8, bigEndian);
renderExtension -> data.trapezoids.dst_id = GetULONG(buffer + 12, bigEndian);
renderExtension -> data.trapezoids.format = GetULONG(buffer + 16, bigEndian);
renderExtension -> data.trapezoids.src_x = GetUINT(buffer + 20, bigEndian);
renderExtension -> data.trapezoids.src_y = GetUINT(buffer + 22, bigEndian);
#ifdef TEST
*logofs << name() << ": Parsed identity. Type is "
<< (unsigned int) renderExtension -> data.trapezoids.type
<< " size is " << renderExtension -> size_ << " identity size "
<< renderExtension -> i_size_ << ".\n" << logofs_flush;
#endif
}
MESSAGE_END_PARSE_IDENTITY
MESSAGE_BEGIN_UNPARSE_IDENTITY
{
RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
*(buffer + 1) = renderExtension -> data.trapezoids.type;
*(buffer + 4) = renderExtension -> data.trapezoids.op;
PutULONG(renderExtension -> data.trapezoids.src_id, buffer + 8, bigEndian);
PutULONG(renderExtension -> data.trapezoids.dst_id, buffer + 12, bigEndian);
PutULONG(renderExtension -> data.trapezoids.format, buffer + 16, bigEndian);
PutUINT(renderExtension -> data.trapezoids.src_x, buffer + 20, bigEndian);
PutUINT(renderExtension -> data.trapezoids.src_y, buffer + 22, bigEndian);
#ifdef TEST
*logofs << name() << ": Unparsed identity. Type is "
<< (unsigned int) renderExtension -> data.trapezoids.type
<< " size is " << renderExtension -> size_ << " identity size "
<< renderExtension -> i_size_ << ".\n" << logofs_flush;
#endif
}
MESSAGE_END_UNPARSE_IDENTITY
MESSAGE_BEGIN_IDENTITY_CHECKSUM
{
//
// Include minor opcode, size and the
// operator in the identity.
//
md5_append(md5_state, buffer + 1, 4);
//
// Also include the format but not the
// x and y source.
//
md5_append(md5_state, buffer + 16, 4);
}
MESSAGE_END_IDENTITY_CHECKSUM
MESSAGE_BEGIN_ENCODE_UPDATE
{
RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
RenderExtensionMessage *cachedRenderExtension = (RenderExtensionMessage *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
encodeBuffer.encodeXidValue(renderExtension -> data.trapezoids.src_id,
clientCache -> renderSrcPictureCache);
cachedRenderExtension -> data.trapezoids.src_id =
renderExtension -> data.trapezoids.src_id;
encodeBuffer.encodeXidValue(renderExtension -> data.trapezoids.dst_id,
clientCache -> renderDstPictureCache);
cachedRenderExtension -> data.trapezoids.dst_id =
renderExtension -> data.trapezoids.dst_id;
//
// The source x and y coordinates are
// encoded as differerences in respect
// to the previous cached value.
//
unsigned int value;
unsigned int previous;
value = renderExtension -> data.trapezoids.src_x;
previous = cachedRenderExtension -> data.trapezoids.src_x;
encodeBuffer.encodeDiffCachedValue(value, previous, 16,
clientCache -> renderXCache, 11);
cachedRenderExtension -> data.trapezoids.src_x = value;
value = renderExtension -> data.trapezoids.src_y;
previous = cachedRenderExtension -> data.trapezoids.src_y;
encodeBuffer.encodeDiffCachedValue(value, previous, 16,
clientCache -> renderYCache, 11);
cachedRenderExtension -> data.trapezoids.src_y = value;
#ifdef TEST
*logofs << name() << ": Encoded update. Type is "
<< (unsigned int) renderExtension -> data.trapezoids.type
<< " size is " << renderExtension -> size_ << " source x "
<< renderExtension -> data.trapezoids.src_x << " y "
<< renderExtension -> data.trapezoids.src_y << ".\n"
<< logofs_flush;
#endif
}
MESSAGE_END_ENCODE_UPDATE
MESSAGE_BEGIN_DECODE_UPDATE
{
RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
decodeBuffer.decodeXidValue(renderExtension -> data.trapezoids.src_id,
clientCache -> renderSrcPictureCache);
decodeBuffer.decodeXidValue(renderExtension -> data.trapezoids.dst_id,
clientCache -> renderDstPictureCache);
unsigned int value;
unsigned int previous;
previous = renderExtension -> data.trapezoids.src_x;
decodeBuffer.decodeDiffCachedValue(value, previous, 16,
clientCache -> renderXCache, 11);
renderExtension -> data.trapezoids.src_x = value;
previous = renderExtension -> data.trapezoids.src_y;
decodeBuffer.decodeDiffCachedValue(value, previous, 16,
clientCache -> renderYCache, 11);
renderExtension -> data.trapezoids.src_y = value;
#ifdef TEST
*logofs << name() << ": Decoded update. Type is "
<< (unsigned int) renderExtension -> data.trapezoids.type
<< " size is " << renderExtension -> size_ << " source x "
<< renderExtension -> data.trapezoids.src_x << " y "
<< renderExtension -> data.trapezoids.src_y << ".\n"
<< logofs_flush;
#endif
}
MESSAGE_END_DECODE_UPDATE