1 /////////////////////////////////////////////////////////////////////////////// 2 // 3 /// \file coder.h 4 /// \brief Compresses or uncompresses a file 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 enum operation_mode { 14 MODE_COMPRESS, 15 MODE_DECOMPRESS, 16 MODE_TEST, 17 MODE_LIST, 18 }; 19 20 21 // NOTE: The order of these is significant in suffix.c. 22 enum format_type { 23 FORMAT_AUTO, 24 FORMAT_XZ, 25 FORMAT_LZMA, 26 // HEADER_GZIP, 27 FORMAT_RAW, 28 }; 29 30 31 /// Operation mode of the command line tool. This is set in args.c and read 32 /// in several files. 33 extern enum operation_mode opt_mode; 34 35 /// File format to use when encoding or what format(s) to accept when 36 /// decoding. This is a global because it's needed also in suffix.c. 37 /// This is set in args.c. 38 extern enum format_type opt_format; 39 40 /// If true, the compression settings are automatically adjusted down if 41 /// they exceed the memory usage limit. 42 extern bool opt_auto_adjust; 43 44 /// If true, stop after decoding the first stream. 45 extern bool opt_single_stream; 46 47 /// If non-zero, start a new .xz Block after every opt_block_size bytes 48 /// of input. This has an effect only when compressing to the .xz format. 49 extern uint64_t opt_block_size; 50 51 /// This is non-NULL if --block-list was used. This contains the Block sizes 52 /// as an array that is terminated with 0. 53 extern uint64_t *opt_block_list; 54 55 /// Set the integrity check type used when compressing 56 extern void coder_set_check(lzma_check check); 57 58 /// Set preset number 59 extern void coder_set_preset(uint32_t new_preset); 60 61 /// Enable extreme mode 62 extern void coder_set_extreme(void); 63 64 /// Add a filter to the custom filter chain 65 extern void coder_add_filter(lzma_vli id, void *options); 66 67 /// 68 extern void coder_set_compression_settings(void); 69 70 /// Compress or decompress the given file 71 extern void coder_run(const char *filename); 72 73 #ifndef NDEBUG 74 /// Free the memory allocated for the coder and kill the worker threads. 75 extern void coder_free(void); 76 #endif 77