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///////////////////////////////////////////////////////////////////////////////
//
/// \file simple_decoder.c
/// \brief Properties decoder for simple filters
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#include "simple_decoder.h"
extern lzma_ret
lzma_simple_props_decode(void **options, const 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_bcj *opt = lzma_alloc(
sizeof(lzma_options_bcj), allocator);
if (opt == NULL)
return LZMA_MEM_ERROR;
opt->start_offset = unaligned_read32le(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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