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-rw-r--r--nxcomp/RenderPictureFilter.cpp266
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