1 files changed, 148 insertions, 0 deletions
diff --git a/indra/llcommon/bitpack.cpp b/indra/llcommon/bitpack.cpp
new file mode 100644
index 0000000000..4acd533600
--- /dev/null
+++ b/indra/llcommon/bitpack.cpp
@@ -0,0 +1,148 @@
+/** 
+ * @file bitpack.cpp
+ * @brief Convert data to packed bit stream
+ *
+ * Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "linden_common.h"
+
+#include "bitpack.h"
+
+#if 0
+#include <stdio.h>
+#include <stdlib.h>
+#include "stdtypes.h"
+
+U8 gLoad, gUnLoad;
+U32 gLoadSize, gUnLoadSize, gTotalBits;
+
+const U32 gMaxDataBits = 8;
+
+/////////////////////////////////////////////////////////////////////////////////////////
+#if 0
+void bit_pack(U8 *outbase, U32 *outptr, U8 *total_data, U32 total_dsize) 
+{
+	U32 max_data_bits = gMaxDataBits;
+	U32 load_size = gLoadSize, total_bits = gTotalBits;
+	U32 dsize;
+
+	U8 data;
+	U8 load = gLoad;
+
+	while (total_dsize > 0)
+	{
+		if (total_dsize > max_data_bits)
+		{
+			dsize = max_data_bits;
+			total_dsize -= max_data_bits;
+		}
+		else
+		{
+			dsize = total_dsize;
+			total_dsize = 0;
+		}
+
+		data = *total_data++;
+
+		data <<= (max_data_bits - dsize);
+		while (dsize > 0) 
+		{
+			if (load_size == max_data_bits) 
+			{
+				*(outbase + (*outptr)++) = load;
+				load_size = 0;
+				load = 0x00;
+			}
+			load <<= 1;			
+			load |= (data >> (max_data_bits - 1));
+			data <<= 1;
+			load_size++;
+			total_bits++;
+			dsize--;
+		}
+	}
+
+	gLoad = load;
+	gLoadSize = load_size;
+	gTotalBits = total_bits;
+}
+#endif
+
+/////////////////////////////////////////////////////////////////////////////////////////
+
+void bit_pack_reset()
+{
+	gLoad = 0x0;
+	gLoadSize = 0;
+	gTotalBits = 0;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////
+
+void bit_pack_flush(U8 *outbase, U32 *outptr) 
+{
+	if (gLoadSize) 
+	{
+		gTotalBits += gLoadSize;
+		gLoad <<= (gMaxDataBits - gLoadSize);
+		outbase[(*outptr)++] = gLoad;
+		gLoadSize = 0;
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////////////
+#if 0
+void bit_unpack(U8 *total_retval, U32 total_dsize, U8 *indata, U32 *inptr) 
+{
+	U32 max_data_bits = gMaxDataBits;
+	U32 unload_size = gUnLoadSize;
+	U32 dsize;
+	U8	*retval;
+	U8 unload = gUnLoad;
+
+	while (total_dsize > 0)
+	{
+		if (total_dsize > max_data_bits)
+		{
+			dsize = max_data_bits;
+			total_dsize -= max_data_bits;
+		}
+		else
+		{
+			dsize = total_dsize;
+			total_dsize = 0;
+		}
+
+		retval = total_data++;
+		*retval = 0x00;
+		while (dsize > 0) 
+		{
+			if (unload_size == 0) 
+			{
+				unload = indata[(*inptr)++];
+				unload_size = max_data_bits;
+			}
+			*retval <<= 1;
+			*retval |= (unload >> (max_data_bits - 1));
+			unload_size--;
+			unload <<= 1;
+			dsize--;
+		}
+	}
+
+	gUnLoad = unload;
+	gUnLoadSize = unload_size;
+}
+#endif
+
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+void bit_unpack_reset() 
+{
+	gUnLoad = 0;
+	gUnLoadSize = 0;
+}
+#endif