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42 lines
989 B
42 lines
989 B
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file simple_decoder.c
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/// \brief Properties decoder for simple filters
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//
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// Author: Lasse Collin
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//
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// This file has been put into the public domain.
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// You can do whatever you want with this file.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "simple_decoder.h"
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extern lzma_ret
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lzma_simple_props_decode(void **options, lzma_allocator *allocator,
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const uint8_t *props, size_t props_size)
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{
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lzma_options_bcj *opt;
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if (props_size == 0)
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return LZMA_OK;
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if (props_size != 4)
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return LZMA_OPTIONS_ERROR;
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opt = lzma_alloc(sizeof(lzma_options_bcj), allocator);
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if (opt == NULL)
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return LZMA_MEM_ERROR;
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opt->start_offset = unaligned_read32le(props);
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// Don't leave an options structure allocated if start_offset is zero.
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if (opt->start_offset == 0)
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lzma_free(opt, allocator);
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else
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*options = opt;
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return LZMA_OK;
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}
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