mirror of
https://git.tukaani.org/xz.git
synced 2024-04-04 12:36:23 +02:00
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
/// \file simple_encoder.c
|
||
|
|
/// \brief Properties encoder for simple filters
|
||
|
|
//
|
||
|
|
// Copyright (C) 2007-2008 Lasse Collin
|
||
|
|
//
|
||
|
|
// This library is free software; you can redistribute it and/or
|
||
|
|
// modify it under the terms of the GNU Lesser General Public
|
||
|
|
// License as published by the Free Software Foundation; either
|
||
|
|
// version 2.1 of the License, or (at your option) any later version.
|
||
|
|
//
|
||
|
|
// This library is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
// Lesser General Public License for more details.
|
||
|
|
//
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#include "simple_encoder.h"
|
||
|
|
|
||
|
|
|
||
|
|
extern lzma_ret
|
||
|
|
lzma_simple_props_size(uint32_t *size, const void *options)
|
||
|
|
{
|
||
|
|
const lzma_options_simple *const opt = options;
|
||
|
|
*size = (opt == NULL || opt->start_offset == 0) ? 0 : 4;
|
||
|
|
return LZMA_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
extern lzma_ret
|
||
|
|
lzma_simple_props_encode(const void *options, uint8_t *out)
|
||
|
|
{
|
||
|
|
const lzma_options_simple *const opt = options;
|
||
|
|
|
||
|
|
// The default start offset is zero, so we don't need to store any
|
||
|
|
// options unless the start offset is non-zero.
|
||
|
|
if (opt == NULL || opt->start_offset == 0)
|
||
|
|
return LZMA_OK;
|
||
|
|
|
||
|
|
integer_write_32(out, opt->start_offset);
|
||
|
|
|
||
|
|
return LZMA_OK;
|
||
|
|
}
|