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/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
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/>.
*/
#include "config.h"
#include "decode.h"
#ifndef __GNUC__
#define ZLIB_WINAPI
#endif
#include <zlib.h>
typedef struct GlibZlibDecoder
{
SpiceZlibDecoder base;
z_stream _z_strm;
} GlibZlibDecoder;
static void decode(SpiceZlibDecoder *decoder,
uint8_t *data, int data_size,
uint8_t *dest, int dest_size)
{
GlibZlibDecoder *d = SPICE_CONTAINEROF(decoder, GlibZlibDecoder, base);
int z_ret;
inflateReset(&d->_z_strm);
d->_z_strm.next_in = data;
d->_z_strm.avail_in = data_size;
d->_z_strm.next_out = dest;
d->_z_strm.avail_out = dest_size;
z_ret = inflate(&d->_z_strm, Z_FINISH);
if (z_ret != Z_STREAM_END) {
g_warning("zlib inflate failed, error %d", z_ret);
}
}
static SpiceZlibDecoderOps zlib_decoder_ops = {
.decode = decode,
};
SpiceZlibDecoder *zlib_decoder_new(void)
{
GlibZlibDecoder *d = g_new0(GlibZlibDecoder, 1);
int z_ret;
d->_z_strm.zalloc = Z_NULL;
d->_z_strm.zfree = Z_NULL;
d->_z_strm.opaque = Z_NULL;
d->_z_strm.next_in = Z_NULL;
d->_z_strm.avail_in = 0;
z_ret = inflateInit(&d->_z_strm);
if (z_ret != Z_OK) {
g_warning("zlib decoder init failed, error %d", z_ret);
goto fail;
}
d->base.ops = &zlib_decoder_ops;
return &d->base;
fail:
free(d);
return NULL;
}
void zlib_decoder_destroy(SpiceZlibDecoder *decoder)
{
GlibZlibDecoder *d = SPICE_CONTAINEROF(decoder, GlibZlibDecoder, base);
inflateEnd(&d->_z_strm);
free(d);
}
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