1 files changed, 112 insertions, 0 deletions
diff --git a/nxcompext/Bitmap.c b/nxcompext/Bitmap.c
new file mode 100644
index 000000000..725eaacff
--- /dev/null
+++ b/nxcompext/Bitmap.c
@@ -0,0 +1,112 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXCOMPEXT, 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 rigths reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "NXlib.h"
+
+#include "Bitmap.h"
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+
+char *BitmapCompressData(XImage *image, unsigned int *size)
+{
+  if (image -> bits_per_pixel != 32)
+  {
+    #ifdef TEST
+    fprintf(stderr, "******BitmapCompressData: Nothing to do with image of [%d] bpp and size [%d].\n",
+                image -> bits_per_pixel, image -> bytes_per_line * image -> height);
+    #endif
+
+    *size = image -> bytes_per_line * image -> height;
+
+    return image -> data;
+  }
+  else
+  {
+    /*
+     * Remove the 4th byte from the bitmap.
+     */
+
+    char *data;
+
+    char *next_src;
+    char *next_dst;
+
+    #ifdef TEST
+
+    if (image -> bytes_per_line != 4 * image -> width)
+    {
+      fprintf(stderr, "******BitmapCompressData: PANIC! Image as [%d] bytes per line with expected [%d].\n",
+                  image -> bytes_per_line, 4 * image -> width);
+
+      return NULL;
+    }
+
+    #endif
+
+    *size = image -> width * image -> height * 3;
+
+    data = Xmalloc(*size);
+
+    if (data == NULL)
+    {
+      #ifdef PANIC
+      fprintf(stderr, "******BitmapCompressData: PANIC! Failed to allocate [%d] bytes for the destination.\n",
+                  *size);
+      #endif
+
+      *size = image -> bytes_per_line * image -> height;
+
+      return image -> data;
+    }
+
+    next_src = image -> data;
+    next_dst = data;
+
+    if (image -> byte_order == LSBFirst)
+    {
+      while (next_src < image -> data +
+                 image -> bytes_per_line * image -> height)
+      {
+        *next_dst++ = *next_src++;
+        *next_dst++ = *next_src++;
+        *next_dst++ = *next_src++;
+
+        next_src++;
+      }
+    }
+    else
+    {
+      while (next_src < image -> data +
+                 image -> bytes_per_line * image -> height)
+      {
+        next_src++;
+
+        *next_dst++ = *next_src++;
+        *next_dst++ = *next_src++;
+        *next_dst++ = *next_src++;
+      }
+    }
+
+    return data;
+  }
+}