Merge branch 'nxcomp'

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