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-rw-r--r--nxcomp/RenderPictureClip.cpp291
1 files changed, 291 insertions, 0 deletions
diff --git a/nxcomp/RenderPictureClip.cpp b/nxcomp/RenderPictureClip.cpp
new file mode 100644
index 000000000..7428e7219
--- /dev/null
+++ b/nxcomp/RenderPictureClip.cpp
@@ -0,0 +1,291 @@
+/**************************************************************************/
+/* */
+/* 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 "RenderPictureClip.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+#include MESSAGE_TAGS
+
+//
+// Message handling methods.
+//
+
+MESSAGE_BEGIN_ENCODE_SIZE
+{
+ //
+ // The data is constituted by a number of
+ // rectangles. Each rectangle is in the
+ // format x, y, width, height with 2 bytes
+ // per each field, so each request is at
+ // least 12 + 8 = 20 bytes long.
+ //
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ 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);
+
+ 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.encodeDiffCachedValue(GetUINT(buffer + 8, bigEndian),
+ clientCache -> renderLastX, 16,
+ clientCache -> renderXCache, 11);
+
+ encodeBuffer.encodeDiffCachedValue(GetUINT(buffer + 10, 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.decodeXidValue(value,
+ clientCache -> renderSrcPictureCache);
+
+ PutULONG(value, buffer + 4, bigEndian);
+
+ decodeBuffer.decodeDiffCachedValue(value,
+ clientCache -> renderLastX, 16,
+ clientCache -> renderXCache, 11);
+
+ PutUINT(clientCache -> renderLastX, buffer + 8, bigEndian);
+
+ decodeBuffer.decodeDiffCachedValue(value,
+ clientCache -> renderLastY, 16,
+ clientCache -> renderYCache, 11);
+
+ PutUINT(clientCache -> renderLastY, buffer + 10, 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
+{
+ encodeIntData(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
+{
+ decodeIntData(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_clip.type = *(buffer + 1);
+
+ renderExtension -> data.picture_clip.src_id = GetULONG(buffer + 4, bigEndian);
+
+ renderExtension -> data.picture_clip.src_x = GetUINT(buffer + 8, bigEndian);
+ renderExtension -> data.picture_clip.src_y = GetUINT(buffer + 10, bigEndian);
+
+ #ifdef TEST
+ *logofs << name() << ": Parsed identity. Type is "
+ << (unsigned int) renderExtension -> data.picture_clip.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_clip.type;
+
+ PutULONG(renderExtension -> data.picture_clip.src_id, buffer + 4, bigEndian);
+
+ PutUINT(renderExtension -> data.picture_clip.src_x, buffer + 8, bigEndian);
+ PutUINT(renderExtension -> data.picture_clip.src_y, buffer + 10, bigEndian);
+
+ #ifdef TEST
+ *logofs << name() << ": Unparsed identity. Type is "
+ << (unsigned int) renderExtension -> data.picture_clip.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+}
+MESSAGE_END_UNPARSE_IDENTITY
+
+MESSAGE_BEGIN_IDENTITY_CHECKSUM
+{
+ //
+ // Encode the picture id and the
+ // source x and y differentially.
+ //
+
+ md5_append(md5_state, buffer + 1, 3);
+}
+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_clip.src_id,
+ clientCache -> renderSrcPictureCache);
+
+ cachedRenderExtension -> data.picture_clip.src_id =
+ renderExtension -> data.picture_clip.src_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.picture_clip.src_x;
+ previous = cachedRenderExtension -> data.picture_clip.src_x;
+
+ encodeBuffer.encodeDiffCachedValue(value, previous, 16,
+ clientCache -> renderXCache, 11);
+
+ cachedRenderExtension -> data.picture_clip.src_x = value;
+
+ value = renderExtension -> data.picture_clip.src_y;
+ previous = cachedRenderExtension -> data.picture_clip.src_y;
+
+ encodeBuffer.encodeDiffCachedValue(value, previous, 16,
+ clientCache -> renderYCache, 11);
+
+ cachedRenderExtension -> data.picture_clip.src_y = value;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoded update. Type is "
+ << (unsigned int) renderExtension -> data.picture_clip.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_clip.src_id,
+ clientCache -> renderSrcPictureCache);
+
+ unsigned int value;
+ unsigned int previous;
+
+ previous = renderExtension -> data.picture_clip.src_x;
+
+ decodeBuffer.decodeDiffCachedValue(value, previous, 16,
+ clientCache -> renderXCache, 11);
+
+ renderExtension -> data.picture_clip.src_x = value;
+
+ previous = renderExtension -> data.picture_clip.src_y;
+
+ decodeBuffer.decodeDiffCachedValue(value, previous, 16,
+ clientCache -> renderYCache, 11);
+
+ renderExtension -> data.picture_clip.src_y = value;
+
+ #ifdef TEST
+ *logofs << name() << ": Decoded update. Type is "
+ << (unsigned int) renderExtension -> data.picture_clip.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+}
+MESSAGE_END_DECODE_UPDATE
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