release/src-rt-6.x.4708/tools/misc/xz/src/liblzma/common/stream_flags_common.h

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