src/liblzma/delta/delta_private.h

   1 // SPDX-License-Identifier: 0BSD
   2
   3 ///////////////////////////////////////////////////////////////////////////////
   4 //
   5 /// \file       delta_private.h
   6 /// \brief      Private common stuff for Delta encoder and decoder
   7 //
   8 //  Author:     Lasse Collin
   9 //
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef LZMA_DELTA_PRIVATE_H
  13 #define LZMA_DELTA_PRIVATE_H
  14
  15 #include "delta_common.h"
  16
  17 typedef struct {
  18         /// Next coder in the chain
  19         lzma_next_coder next;
  20
  21         /// Delta distance
  22         size_t distance;
  23
  24         /// Position in history[]
  25         uint8_t pos;
  26
  27         /// Buffer to hold history of the original data
  28         uint8_t history[LZMA_DELTA_DIST_MAX];
  29 } lzma_delta_coder;
  30
  31
  32 extern lzma_ret lzma_delta_coder_init(
  33                 lzma_next_coder *next, const lzma_allocator *allocator,
  34                 const lzma_filter_info *filters);
  35
  36 #endif