58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
/// \file filter_flags_encoder.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_encoder.h"
|
|
|
|
|
|
extern LZMA_API(lzma_ret)
|
|
lzma_filter_flags_size(uint32_t *size, const lzma_filter *filter)
|
|
{
|
|
if (filter->id >= LZMA_FILTER_RESERVED_START)
|
|
return LZMA_PROG_ERROR;
|
|
|
|
return_if_error(lzma_properties_size(size, filter));
|
|
|
|
*size += lzma_vli_size(filter->id) + lzma_vli_size(*size);
|
|
|
|
return LZMA_OK;
|
|
}
|
|
|
|
|
|
extern LZMA_API(lzma_ret)
|
|
lzma_filter_flags_encode(const lzma_filter *filter,
|
|
uint8_t *out, size_t *out_pos, size_t out_size)
|
|
{
|
|
uint32_t props_size;
|
|
|
|
// Filter ID
|
|
if (filter->id >= LZMA_FILTER_RESERVED_START)
|
|
return LZMA_PROG_ERROR;
|
|
|
|
return_if_error(lzma_vli_encode(filter->id, NULL,
|
|
out, out_pos, out_size));
|
|
|
|
// Size of Properties
|
|
return_if_error(lzma_properties_size(&props_size, filter));
|
|
return_if_error(lzma_vli_encode(props_size, NULL,
|
|
out, out_pos, out_size));
|
|
|
|
// Filter Properties
|
|
if (out_size - *out_pos < props_size)
|
|
return LZMA_PROG_ERROR;
|
|
|
|
return_if_error(lzma_properties_encode(filter, out + *out_pos));
|
|
|
|
*out_pos += props_size;
|
|
|
|
return LZMA_OK;
|
|
}
|