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// $Id$
#include "LzoCompressor.h"
#include <lzo1x.h>
#include <lzoutil.h>
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO
{
LzoCompressor::LzoCompressor (
::Compression::CompressorFactory_ptr compressor_factory,
::Compression::CompressionLevel compression_level) :
BaseCompressor (compressor_factory, compression_level)
{
}
void
LzoCompressor::compress (
const ::Compression::Buffer & source,
::Compression::Buffer & target)
{
void* wrkmem = (lzo_bytep) lzo_malloc(LZO1X_1_MEM_COMPRESS);
// Ensure maximum is at least a bit bigger than input length.
target.length (static_cast <CORBA::ULong> ((source.length () * 1.1) + 12));
lzo_uint max_length = static_cast <lzo_uint> (target.maximum ());
int const retval = ::lzo1x_1_compress (
reinterpret_cast <const unsigned char*>(source.get_buffer ()),
source.length (),
reinterpret_cast <unsigned char*>(target.get_buffer ()),
&max_length,
wrkmem);
lzo_free(wrkmem);
if (retval != LZO_E_OK)
{
throw ::Compression::CompressionException (retval, "");
}
else
{
target.length (static_cast <CORBA::ULong> (max_length));
}
// Update statistics for this compressor
this->update_stats (source.length (), target.length ());
}
void
LzoCompressor::decompress (
const ::Compression::Buffer & source,
::Compression::Buffer & target)
{
lzo_uint max_length = static_cast <lzo_uint> (target.maximum ());
int const retval = ::lzo1x_decompress (
reinterpret_cast <const unsigned char*>(source.get_buffer ()),
source.length (),
reinterpret_cast <unsigned char*>(target.get_buffer ()),
&max_length,
0);
if (retval != LZO_E_OK)
{
throw ::Compression::CompressionException (retval, "");
}
else
{
target.length (static_cast <CORBA::ULong> (max_length));
}
}
}
TAO_END_VERSIONED_NAMESPACE_DECL
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