src/liblzma/common/stream_flags_common.h

   1 // SPDX-License-Identifier: 0BSD
   2
   3 ///////////////////////////////////////////////////////////////////////////////
   4 //
   5 /// \file       stream_flags_common.h
   6 /// \brief      Common stuff for Stream flags coders
   7 //
   8 //  Author:     Lasse Collin
   9 //
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef LZMA_STREAM_FLAGS_COMMON_H
  13 #define LZMA_STREAM_FLAGS_COMMON_H
  14
  15 #include "common.h"
  16
  17 /// Size of the Stream Flags field
  18 #define LZMA_STREAM_FLAGS_SIZE 2
  19
  20 lzma_attr_visibility_hidden
  21 extern const uint8_t lzma_header_magic[6];
  22
  23 lzma_attr_visibility_hidden
  24 extern const uint8_t lzma_footer_magic[2];
  25
  26
  27 static inline bool
  28 is_backward_size_valid(const lzma_stream_flags *options)
  29 {
  30         return options->backward_size >= LZMA_BACKWARD_SIZE_MIN
  31                         && options->backward_size <= LZMA_BACKWARD_SIZE_MAX
  32                         && (options->backward_size & 3) == 0;
  33 }
  34
  35 #endif