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-rw-r--r--nxcomp/RenderTrapezoids.cpp360
1 files changed, 360 insertions, 0 deletions
diff --git a/nxcomp/RenderTrapezoids.cpp b/nxcomp/RenderTrapezoids.cpp
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+++ b/nxcomp/RenderTrapezoids.cpp
@@ -0,0 +1,360 @@
+/**************************************************************************/
+/* */
+/* 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
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