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/*
Copyright (C) 2010 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "common.h"
#include "zlib_decoder.h"
#include "debug.h"
#include "utils.h"
static void op_decode(SpiceZlibDecoder *decoder,
uint8_t *data,
int data_size,
uint8_t *dest,
int dest_size)
{
ZlibDecoder* _decoder = static_cast<ZlibDecoder*>(decoder);
_decoder->decode(data, data_size, dest, dest_size);
}
ZlibDecoder::ZlibDecoder()
{
int z_ret;
_z_strm.zalloc = Z_NULL;
_z_strm.zfree = Z_NULL;
_z_strm.opaque = Z_NULL;
_z_strm.next_in = Z_NULL;
_z_strm.avail_in = 0;
z_ret = inflateInit(&_z_strm);
if (z_ret != Z_OK) {
THROW("zlib decoder init failed, error %d", z_ret);
}
static SpiceZlibDecoderOps decoder_ops = {
op_decode,
};
ops = &decoder_ops;
}
ZlibDecoder::~ZlibDecoder()
{
inflateEnd(&_z_strm);
}
void ZlibDecoder::decode(uint8_t *data, int data_size, uint8_t *dest, int dest_size)
{
int z_ret;
inflateReset(&_z_strm);
_z_strm.next_in = data;
_z_strm.avail_in = data_size;
_z_strm.next_out = dest;
_z_strm.avail_out = dest_size;
z_ret = inflate(&_z_strm, Z_FINISH);
if (z_ret != Z_STREAM_END) {
THROW("zlib inflate failed, error %d", z_ret);
}
}
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