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-rwxr-xr-xnxcomp/PutPackedImage.cpp595
1 files changed, 595 insertions, 0 deletions
diff --git a/nxcomp/PutPackedImage.cpp b/nxcomp/PutPackedImage.cpp
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+++ b/nxcomp/PutPackedImage.cpp
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2007 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 NoMachine S.r.l. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+#include "PutPackedImage.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+#include "WriteBuffer.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+#undef DUMP
+
+//
+// Constructors and destructors.
+//
+
+PutPackedImageStore::PutPackedImageStore(StaticCompressor *compressor)
+
+ : MessageStore(compressor)
+{
+ enableCache = PUTPACKEDIMAGE_ENABLE_CACHE;
+ enableData = PUTPACKEDIMAGE_ENABLE_DATA;
+ enableSplit = PUTPACKEDIMAGE_ENABLE_SPLIT;
+ enableCompress = PUTPACKEDIMAGE_ENABLE_COMPRESS;
+
+ dataLimit = PUTPACKEDIMAGE_DATA_LIMIT;
+ dataOffset = PUTPACKEDIMAGE_DATA_OFFSET;
+
+ cacheSlots = PUTPACKEDIMAGE_CACHE_SLOTS;
+ cacheThreshold = PUTPACKEDIMAGE_CACHE_THRESHOLD;
+ cacheLowerThreshold = PUTPACKEDIMAGE_CACHE_LOWER_THRESHOLD;
+
+ if (control -> isProtoStep8() == 1)
+ {
+ enableSplit = PUTPACKEDIMAGE_ENABLE_SPLIT_IF_PROTO_STEP_8;
+ }
+
+ messages_ -> resize(cacheSlots);
+
+ for (T_messages::iterator i = messages_ -> begin();
+ i < messages_ -> end(); i++)
+ {
+ *i = NULL;
+ }
+
+ temporary_ = NULL;
+}
+
+PutPackedImageStore::~PutPackedImageStore()
+{
+ for (T_messages::iterator i = messages_ -> begin();
+ i < messages_ -> end(); i++)
+ {
+ destroy(*i);
+ }
+
+ destroy(temporary_);
+}
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int PutPackedImageStore::encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
+ const unsigned int size, int bigEndian,
+ ChannelCache *channelCache) const
+{
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoding full message identity.\n" << logofs_flush;
+ #endif
+
+ // Client.
+ encodeBuffer.encodeCachedValue(*(buffer + 1), 8,
+ clientCache -> resourceCache);
+
+ // Size.
+ encodeBuffer.encodeValue(GetUINT(buffer + 2, bigEndian), 16, 10);
+
+ // Drawable.
+ encodeBuffer.encodeXidValue(GetULONG(buffer + 4, bigEndian),
+ clientCache -> drawableCache);
+ // GC.
+ encodeBuffer.encodeXidValue(GetULONG(buffer + 8, bigEndian),
+ clientCache -> gcCache);
+ // Method.
+ encodeBuffer.encodeCachedValue(*(buffer + 12), 8,
+ clientCache -> methodCache);
+ // Format.
+ encodeBuffer.encodeValue(*(buffer + 13), 2);
+
+ // SrcDepth.
+ encodeBuffer.encodeCachedValue(*(buffer + 14), 8,
+ clientCache -> depthCache);
+ // DstDepth.
+ encodeBuffer.encodeCachedValue(*(buffer + 15), 8,
+ clientCache -> depthCache);
+ // SrcLength.
+ encodeBuffer.encodeCachedValue(GetULONG(buffer + 16, bigEndian), 24,
+ clientCache -> putPackedImageSrcLengthCache);
+ // DstLength.
+ encodeBuffer.encodeCachedValue(GetULONG(buffer + 20, bigEndian), 24,
+ clientCache -> putPackedImageDstLengthCache);
+ // SrcX.
+ unsigned int x = GetUINT(buffer + 24, bigEndian);
+ int xDiff = x - clientCache -> putImageLastX;
+ clientCache -> putImageLastX = x;
+ encodeBuffer.encodeCachedValue(xDiff, 16,
+ clientCache -> putImageXCache, 8);
+ // SrcY.
+ unsigned int y = GetUINT(buffer + 26, bigEndian);
+ int yDiff = y - clientCache -> putImageLastY;
+ clientCache -> putImageLastY = y;
+ encodeBuffer.encodeCachedValue(yDiff, 16,
+ clientCache -> putImageYCache, 8);
+ // SrcWidth.
+ encodeBuffer.encodeCachedValue(GetUINT(buffer + 28, bigEndian), 16,
+ clientCache -> putImageWidthCache, 8);
+ // SrcHeight.
+ encodeBuffer.encodeCachedValue(GetUINT(buffer + 30, bigEndian), 16,
+ clientCache -> putImageHeightCache, 8);
+ // DstX.
+ x = GetUINT(buffer + 32, bigEndian);
+ xDiff = x - clientCache -> putImageLastX;
+ clientCache -> putImageLastX = x;
+ encodeBuffer.encodeCachedValue(xDiff, 16,
+ clientCache -> putImageXCache, 8);
+ // DstY.
+ y = GetUINT(buffer + 34, bigEndian);
+ yDiff = y - clientCache -> putImageLastY;
+ clientCache -> putImageLastY = y;
+ encodeBuffer.encodeCachedValue(yDiff, 16,
+ clientCache -> putImageYCache, 8);
+ // DstWidth.
+ encodeBuffer.encodeCachedValue(GetUINT(buffer + 36, bigEndian), 16,
+ clientCache -> putImageWidthCache, 8);
+ // DstHeight.
+ encodeBuffer.encodeCachedValue(GetUINT(buffer + 38, bigEndian), 16,
+ clientCache -> putImageHeightCache, 8);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoded full message identity.\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutPackedImageStore::decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer,
+ unsigned int &size, int bigEndian, WriteBuffer *writeBuffer,
+ ChannelCache *channelCache) const
+{
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoding full message identity.\n" << logofs_flush;
+ #endif
+
+ unsigned int value;
+ unsigned char cValue;
+
+ // Client.
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> resourceCache);
+
+ // Size.
+ decodeBuffer.decodeValue(size, 16, 10);
+
+ size <<= 2;
+
+ buffer = writeBuffer -> addMessage(size);
+
+ *(buffer + 1) = cValue;
+
+ // Drawable.
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+ PutULONG(value, buffer + 4, bigEndian);
+
+ // GC.
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+ PutULONG(value, buffer + 8, bigEndian);
+
+ // Method.
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> methodCache);
+ *(buffer + 12) = cValue;
+
+ // Format.
+ decodeBuffer.decodeValue(value, 2);
+ *(buffer + 13) = value;
+
+ // SrcDepth.
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> depthCache);
+ *(buffer + 14) = cValue;
+
+ // DstDepth.
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> depthCache);
+ *(buffer + 15) = cValue;
+
+ // SrcLength.
+ decodeBuffer.decodeCachedValue(value, 24,
+ clientCache -> putPackedImageSrcLengthCache);
+ PutULONG(value, buffer + 16, bigEndian);
+
+ // DstLength.
+ decodeBuffer.decodeCachedValue(value, 24,
+ clientCache -> putPackedImageDstLengthCache);
+ PutULONG(value, buffer + 20, bigEndian);
+
+ // SrcX.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageXCache, 8);
+ clientCache -> putImageLastX += value;
+ clientCache -> putImageLastX &= 0xffff;
+ PutUINT(clientCache -> putImageLastX, buffer + 24, bigEndian);
+
+ // SrcY.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageYCache, 8);
+ clientCache -> putImageLastY += value;
+ clientCache -> putImageLastY &= 0xffff;
+ PutUINT(clientCache -> putImageLastY, buffer + 26, bigEndian);
+
+ // SrcWidth.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageWidthCache, 8);
+ PutUINT(value, buffer + 28, bigEndian);
+
+ // SrcHeight.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageHeightCache, 8);
+ PutUINT(value, buffer + 30, bigEndian);
+
+ // DstX.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageXCache, 8);
+ clientCache -> putImageLastX += value;
+ clientCache -> putImageLastX &= 0xffff;
+ PutUINT(clientCache -> putImageLastX, buffer + 32, bigEndian);
+
+ // DstY.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageYCache, 8);
+ clientCache -> putImageLastY += value;
+ clientCache -> putImageLastY &= 0xffff;
+ PutUINT(clientCache -> putImageLastY, buffer + 34, bigEndian);
+
+ // DstWidth.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageWidthCache, 8);
+ PutUINT(value, buffer + 36, bigEndian);
+
+ // DstHeight.
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageHeightCache, 8);
+ PutUINT(value, buffer + 38, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded full message identity.\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutPackedImageStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PutPackedImageMessage *putPackedImage = (PutPackedImageMessage *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ putPackedImage -> client = *(buffer + 1);
+
+ putPackedImage -> drawable = GetULONG(buffer + 4, bigEndian);
+ putPackedImage -> gcontext = GetULONG(buffer + 8, bigEndian);
+
+ putPackedImage -> method = *(buffer + 12);
+
+ putPackedImage -> format = *(buffer + 13);
+ putPackedImage -> src_depth = *(buffer + 14);
+ putPackedImage -> dst_depth = *(buffer + 15);
+
+ putPackedImage -> src_length = GetULONG(buffer + 16, bigEndian);
+ putPackedImage -> dst_length = GetULONG(buffer + 20, bigEndian);
+
+ putPackedImage -> src_x = GetUINT(buffer + 24, bigEndian);
+ putPackedImage -> src_y = GetUINT(buffer + 26, bigEndian);
+ putPackedImage -> src_width = GetUINT(buffer + 28, bigEndian);
+ putPackedImage -> src_height = GetUINT(buffer + 30, bigEndian);
+
+ putPackedImage -> dst_x = GetUINT(buffer + 32, bigEndian);
+ putPackedImage -> dst_y = GetUINT(buffer + 34, bigEndian);
+ putPackedImage -> dst_width = GetUINT(buffer + 36, bigEndian);
+ putPackedImage -> dst_height = GetUINT(buffer + 38, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed identity for message at "
+ << message << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutPackedImageStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PutPackedImageMessage *putPackedImage = (PutPackedImageMessage *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ *(buffer + 1) = putPackedImage -> client;
+
+ PutULONG(putPackedImage -> drawable, buffer + 4, bigEndian);
+ PutULONG(putPackedImage -> gcontext, buffer + 8, bigEndian);
+
+ *(buffer + 12) = putPackedImage -> method;
+
+ *(buffer + 13) = putPackedImage -> format;
+ *(buffer + 14) = putPackedImage -> src_depth;
+ *(buffer + 15) = putPackedImage -> dst_depth;
+
+ PutULONG(putPackedImage -> src_length, buffer + 16, bigEndian);
+ PutULONG(putPackedImage -> dst_length, buffer + 20, bigEndian);
+
+ PutUINT(putPackedImage -> src_x, buffer + 24, bigEndian);
+ PutUINT(putPackedImage -> src_y, buffer + 26, bigEndian);
+ PutUINT(putPackedImage -> src_width, buffer + 28, bigEndian);
+ PutUINT(putPackedImage -> src_height, buffer + 30, bigEndian);
+
+ PutUINT(putPackedImage -> dst_x, buffer + 32, bigEndian);
+ PutUINT(putPackedImage -> dst_y, buffer + 34, bigEndian);
+ PutUINT(putPackedImage -> dst_width, buffer + 36, bigEndian);
+ PutUINT(putPackedImage -> dst_height, buffer + 38, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at "
+ << message << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void PutPackedImageStore::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ PutPackedImageMessage *putPackedImage = (PutPackedImageMessage *) message;
+
+ *logofs << name() << ": Identity format "
+
+ << "drawable " << putPackedImage -> drawable << ", "
+ << "gcontext " << putPackedImage -> gcontext << ", "
+
+ << "format " << (unsigned int) putPackedImage -> format << ", "
+ << "method " << (unsigned int) putPackedImage -> method << ", "
+
+ << "src_depth " << (unsigned int) putPackedImage -> src_depth << ", "
+ << "dst_depth " << (unsigned int) putPackedImage -> dst_depth << ", "
+
+ << "src_length " << putPackedImage -> src_length << ", "
+ << "dst_length " << putPackedImage -> dst_length << ", "
+
+ << "src_x " << putPackedImage -> src_x << ", "
+ << "src_y " << putPackedImage -> src_y << ", "
+ << "src_width " << putPackedImage -> src_width << ", "
+ << "src_height " << putPackedImage -> src_height << ", "
+
+ << "dst_x " << putPackedImage -> dst_x << ", "
+ << "dst_y " << putPackedImage -> dst_y << ", "
+ << "dst_width " << putPackedImage -> dst_width << ", "
+ << "dst_height " << putPackedImage -> dst_height << ", "
+
+ << "size " << putPackedImage -> size_ << ".\n"
+ << logofs_flush;
+
+ #endif
+}
+
+void PutPackedImageStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ //
+ // Fields method, format, src_depth, dst_depth,
+ // src_length, dst_length, src_x, src_y, src_width,
+ // src_height.
+ //
+ //
+ // TODO: We should better investigate the effect of
+ // having fields src_x and src_y in identity instead
+ // of keeping them in differences.
+ //
+
+ md5_append(md5_state_, buffer + 12, 20);
+}
+
+void PutPackedImageStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ //
+ // Encode the variant part.
+ //
+
+ PutPackedImageMessage *putPackedImage = (PutPackedImageMessage *) message;
+ PutPackedImageMessage *cachedPutPackedImage = (PutPackedImageMessage *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value "
+ << (unsigned int) putPackedImage -> client
+ << " as client field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(putPackedImage -> client, 8,
+ clientCache -> resourceCache);
+
+ cachedPutPackedImage -> client = putPackedImage -> client;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> drawable
+ << " as drawable field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(putPackedImage -> drawable, clientCache -> drawableCache);
+
+ cachedPutPackedImage -> drawable = putPackedImage -> drawable;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(putPackedImage -> gcontext, clientCache -> gcCache);
+
+ cachedPutPackedImage -> gcontext = putPackedImage -> gcontext;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> dst_x
+ << " as " << "dst_x" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_x = putPackedImage -> dst_x - cachedPutPackedImage -> dst_x;
+
+ encodeBuffer.encodeCachedValue(diff_x, 16,
+ clientCache -> putImageXCache, 8);
+
+ cachedPutPackedImage -> dst_x = putPackedImage -> dst_x;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> dst_y
+ << " as " << "dst_y" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_y = putPackedImage -> dst_y - cachedPutPackedImage -> dst_y;
+
+ encodeBuffer.encodeCachedValue(diff_y, 16,
+ clientCache -> putImageYCache, 8);
+
+ cachedPutPackedImage -> dst_y = putPackedImage -> dst_y;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> dst_width
+ << " as " << "dst_width" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(putPackedImage -> dst_width, 16,
+ clientCache -> putImageWidthCache, 8);
+
+ cachedPutPackedImage -> dst_width = putPackedImage -> dst_width;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putPackedImage -> dst_height
+ << " as " << "dst_height" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(putPackedImage -> dst_height, 16,
+ clientCache -> putImageHeightCache, 8);
+
+ cachedPutPackedImage -> dst_height = putPackedImage -> dst_height;
+}
+
+void PutPackedImageStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ //
+ // Decode the variant part.
+ //
+
+ PutPackedImageMessage *putPackedImage = (PutPackedImageMessage *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeCachedValue(putPackedImage -> client, 8,
+ clientCache -> resourceCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value "
+ << (unsigned int) putPackedImage -> client
+ << " as client field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+
+ putPackedImage -> drawable = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> drawable
+ << " as drawable field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+
+ putPackedImage -> gcontext = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageXCache, 8);
+
+ putPackedImage -> dst_x += value;
+ putPackedImage -> dst_x &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> dst_x
+ << " as dst_x field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageYCache, 8);
+
+ putPackedImage -> dst_y += value;
+ putPackedImage -> dst_y &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> dst_y
+ << " as dst_y field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageWidthCache, 8);
+
+ putPackedImage -> dst_width = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> dst_width
+ << " as dst_width field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageHeightCache, 8);
+
+ putPackedImage -> dst_height = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putPackedImage -> dst_height
+ << " as dst_height field.\n" << logofs_flush;
+ #endif
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 16:18:52 +0000