aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/Bitmap.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'nxcomp/Bitmap.cpp')
-rw-r--r--nxcomp/Bitmap.cpp106
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;
+}