1 files changed, 106 insertions, 0 deletions
diff --git a/nxcomp/Bitmap.cpp b/nxcomp/Bitmap.cpp
new file mode 100644
index 000000000..b5bad226a
--- /dev/null
+++ b/nxcomp/Bitmap.cpp
@@ -0,0 +1,106 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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 "Misc.h"
+#include "Bitmap.h"
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+
+int UnpackBitmap(T_geometry *geometry, unsigned char method, unsigned char *src_data,
+                  int src_size, int dst_bpp, int dst_width, int dst_height,
+                      unsigned char *dst_data, int dst_size)
+{
+  if (dst_bpp != 32)
+  {
+    #ifdef TEST
+    *logofs << "UnpackBitmap: Nothing to do with "
+            << "image of " << dst_bpp << " bits per plane "
+            << "and size " << src_size << ".\n"
+            << logofs_flush;
+    #endif
+
+    if (src_size != dst_size)
+    {
+      #ifdef PANIC
+      *logofs << "UnpackBitmap: PANIC! Size mismatch with "
+              << src_size << " bytes in the source and "
+              << dst_size << " in the destination.\n"
+              << logofs_flush;
+      #endif
+
+      return -1;
+    }
+
+    memcpy(dst_data, src_data, src_size);
+
+    return 1;
+  }
+  else if (src_size != dst_width * dst_height * 3 ||
+               dst_size != dst_width * dst_height * 4)
+  {
+    #ifdef PANIC
+    *logofs << "UnpackBitmap: PANIC! Size mismatch with "
+            << src_size << " bytes in the source and "
+            << dst_size << " in the destination.\n"
+            << logofs_flush;
+    #endif
+
+    return -1;
+  }
+
+  /*
+   * Insert the 4th byte in the bitmap.
+   */
+
+  unsigned char *next_src = src_data;
+  unsigned char *next_dst = dst_data;
+
+  if (geometry -> image_byte_order == LSBFirst)
+  {
+    while (next_src < src_data + src_size)
+    {
+      *next_dst++ = *next_src++;
+      *next_dst++ = *next_src++;
+      *next_dst++ = *next_src++;
+
+      next_dst++;
+    }
+  }
+  else
+  {
+    while (next_src < src_data + src_size)
+    {
+      next_dst++;
+
+      *next_dst++ = *next_src++;
+      *next_dst++ = *next_src++;
+      *next_dst++ = *next_src++;
+    }
+  }
+
+  #ifdef TEST
+  *logofs << "UnpackBitmap: Unpacked " << src_size
+          << " bytes to a buffer of " << dst_size
+          << " with " << dst_bpp << " bits per plane.\n"
+          << logofs_flush;
+  #endif
+
+  return 1;
+}