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8efc0c15 | 1 | /* |
6ae2364d | 2 | * |
5260325f | 3 | * compress.h |
6ae2364d | 4 | * |
5260325f | 5 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
6ae2364d | 6 | * |
5260325f | 7 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
8 | * All rights reserved | |
6ae2364d | 9 | * |
5260325f | 10 | * Created: Wed Oct 25 22:12:46 1995 ylo |
6ae2364d | 11 | * |
5260325f | 12 | * Interface to packet compression for ssh. |
6ae2364d | 13 | * |
5260325f | 14 | */ |
8efc0c15 | 15 | |
16 | /* RCSID("$Id$"); */ | |
17 | ||
18 | #ifndef COMPRESS_H | |
19 | #define COMPRESS_H | |
20 | ||
aa3378df | 21 | /* |
22 | * Initializes compression; level is compression level from 1 to 9 (as in | |
23 | * gzip). | |
24 | */ | |
5260325f | 25 | void buffer_compress_init(int level); |
8efc0c15 | 26 | |
27 | /* Frees any data structures allocated by buffer_compress_init. */ | |
5260325f | 28 | void buffer_compress_uninit(); |
8efc0c15 | 29 | |
aa3378df | 30 | /* |
31 | * Compresses the contents of input_buffer into output_buffer. All packets | |
32 | * compressed using this function will form a single compressed data stream; | |
33 | * however, data will be flushed at the end of every call so that each | |
34 | * output_buffer can be decompressed independently (but in the appropriate | |
35 | * order since they together form a single compression stream) by the | |
36 | * receiver. This appends the compressed data to the output buffer. | |
37 | */ | |
5260325f | 38 | void buffer_compress(Buffer * input_buffer, Buffer * output_buffer); |
8efc0c15 | 39 | |
aa3378df | 40 | /* |
41 | * Uncompresses the contents of input_buffer into output_buffer. All packets | |
42 | * uncompressed using this function will form a single compressed data | |
43 | * stream; however, data will be flushed at the end of every call so that | |
44 | * each output_buffer. This must be called for the same size units that the | |
45 | * buffer_compress was called, and in the same order that buffers compressed | |
46 | * with that. This appends the uncompressed data to the output buffer. | |
47 | */ | |
5260325f | 48 | void buffer_uncompress(Buffer * input_buffer, Buffer * output_buffer); |
8efc0c15 | 49 | |
5260325f | 50 | #endif /* COMPRESS_H */ |