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///////////////////////////////////////////////////////////////////////////////
//
/// \file simple_decoder.c
/// \brief Properties decoder for simple filters
//
// Copyright (C) 2007-2008 Lasse Collin
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#include "simple_decoder.h"
extern lzma_ret
lzma_simple_props_decode(void **options, lzma_allocator *allocator,
const uint8_t *props, size_t props_size)
{
if (props_size == 0)
return LZMA_OK;
if (props_size != 4)
return LZMA_OPTIONS_ERROR;
lzma_options_simple *opt = lzma_alloc(
sizeof(lzma_options_simple), allocator);
if (opt == NULL)
return LZMA_MEM_ERROR;
opt->start_offset = integer_read_32(props);
// Don't leave an options structure allocated if start_offset is zero.
if (opt->start_offset == 0)
lzma_free(opt, allocator);
else
*options = opt;
return LZMA_OK;
}
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