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/**
* @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
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