52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/*
|
||
|
||
Burrows–Wheeler Transform.
|
||
|
||
The code in this file is based on TheUnarchiver.
|
||
See README.md and docs/licenses/TheUnarchiver.txt for more information.
|
||
|
||
Copyright (C) 2019, Guillaume Gonnet
|
||
|
||
This program is free software: you can redistribute it and/or modify it under
|
||
the terms of the GNU General Public License as published by the Free Software
|
||
Foundation, either version 3 of the License, or (at your option) any later
|
||
version.
|
||
|
||
This program 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 General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License along with
|
||
this program. If not, see <https://www.gnu.org/licenses/>.
|
||
|
||
*/
|
||
|
||
#pragma once
|
||
|
||
#include <inttypes.h>
|
||
|
||
namespace maconv {
|
||
namespace stuffit {
|
||
|
||
|
||
// The MTF (Move-to-Front Transform) decoder.
|
||
struct MtfDecoder {
|
||
|
||
// Reset the decoder.
|
||
void ResetDecoder();
|
||
|
||
// Decode the next symbol.
|
||
int Decode(int symbol);
|
||
|
||
int table[256];
|
||
};
|
||
|
||
|
||
|
||
// Calculate inverse of BWT.
|
||
void CalculateInverseBWT(uint32_t *transform, uint8_t *block, int block_len);
|
||
|
||
|
||
} // namespace stuffit
|
||
} // namespace maconv
|