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file_bwt_lz4.h
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1 /*
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27 
28 #pragma once
29 
30 #include <nvbio/sufsort/file_bwt.h>
31 
32 namespace nvbio {
33 
35 {
38  LZ4FileWriter(FILE* _file = NULL);
39 
43 
46  void open(FILE* _file);
47 
50  void close();
51 
54  void write(uint32 n_bytes, const void* _src);
55 
56 private:
59  void encode_block(uint32 n_bytes, const uint8* src);
60 
61  FILE* m_file;
62  std::vector<uint8> m_buffer;
63  std::vector<uint8> m_comp_buffer;
64  uint32 m_buffer_size;
65 };
66 
70 {
73  BWTLZ4Writer();
74 
77  ~BWTLZ4Writer();
78 
80  void open(const char* output_name, const char* index_name, const char* compression);
81 
84  uint32 bwt_write(const uint32 n_bytes, const void* buffer);
85 
88  uint32 index_write(const uint32 n_bytes, const void* buffer);
89 
92  bool is_ok() const;
93 
94 private:
95  FILE* output_file;
96  FILE* index_file;
97  LZ4FileWriter output_file_writer;
98  LZ4FileWriter index_file_writer;
99 };
100 
101 } // namespace nvbio