1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
///////////////////////////////////////////////////////////////////////////////
//
/// \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)
{
// 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
uint32_t props_size;
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;
}
|
