///////////////////////////////////////////////////////////////////////////////

//

/// \file filter_flags_decoder.c

/// \brief Decodes a Filter Flags field

//

// Author: Lasse Collin

//

// This file has been put into the public domain.

// You can do whatever you want with this file.

//

///////////////////////////////////////////////////////////////////////////////

#include "filter_decoder.h"

extern LZMA_API(lzma_ret)

lzma_filter_flags_decode(

lzma_filter *filter, lzma_allocator *allocator,

const uint8_t *in, size_t *in_pos, size_t in_size)

{

// Set the pointer to NULL so the caller can always safely free it.

filter->options = NULL;

// Filter ID

return_if_error(lzma_vli_decode(&filter->id, NULL,

in, in_pos, in_size));

if (filter->id >= LZMA_FILTER_RESERVED_START)

return LZMA_DATA_ERROR;

// Size of Properties

lzma_vli props_size;

return_if_error(lzma_vli_decode(&props_size, NULL,

in, in_pos, in_size));

// Filter Properties

if (in_size - *in_pos < props_size)

return LZMA_DATA_ERROR;

const lzma_ret ret = lzma_properties_decode(

filter, allocator, in + *in_pos, props_size);

*in_pos += props_size;

return ret;

}