| 1 | /* |
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| 2 | |
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| 3 | compress.h |
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| 4 | |
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| 5 | Author: Tatu Ylonen <ylo@cs.hut.fi> |
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| 6 | |
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| 7 | Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
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| 8 | All rights reserved |
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| 9 | |
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| 10 | Created: Wed Oct 25 22:12:46 1995 ylo |
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| 11 | |
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| 12 | Interface to packet compression for ssh. |
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| 13 | |
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| 14 | */ |
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| 15 | |
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| 16 | /* |
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| 17 | * $Id: compress.h,v 1.1.1.2 1999-03-08 17:43:34 danw Exp $ |
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| 18 | * $Log: not supported by cvs2svn $ |
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| 19 | * Revision 1.2 1997/03/26 07:11:32 kivinen |
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| 20 | * Fixed prototypes. |
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| 21 | * |
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| 22 | * Revision 1.1.1.1 1996/02/18 21:38:11 ylo |
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| 23 | * Imported ssh-1.2.13. |
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| 24 | * |
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| 25 | * $EndLog$ |
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| 26 | */ |
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| 27 | |
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| 28 | #ifndef COMPRESS_H |
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| 29 | #define COMPRESS_H |
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| 30 | |
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| 31 | /* Initializes compression; level is compression level from 1 to 9 (as in |
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| 32 | gzip). */ |
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| 33 | void buffer_compress_init(int level); |
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| 34 | |
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| 35 | /* Frees any data structures allocated by buffer_compress_init. */ |
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| 36 | void buffer_compress_uninit(void); |
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| 37 | |
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| 38 | /* Compresses the contents of input_buffer into output_buffer. All |
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| 39 | packets compressed using this function will form a single |
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| 40 | compressed data stream; however, data will be flushed at the end of |
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| 41 | every call so that each output_buffer can be decompressed |
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| 42 | independently (but in the appropriate order since they together |
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| 43 | form a single compression stream) by the receiver. This appends |
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| 44 | the compressed data to the output buffer. */ |
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| 45 | void buffer_compress(Buffer *input_buffer, Buffer *output_buffer); |
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| 46 | |
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| 47 | /* Uncompresses the contents of input_buffer into output_buffer. All |
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| 48 | packets uncompressed using this function will form a single |
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| 49 | compressed data stream; however, data will be flushed at the end of |
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| 50 | every call so that each output_buffer. This must be called for the |
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| 51 | same size units that the buffer_compress was called, and in the |
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| 52 | same order that buffers compressed with that. This appends the |
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| 53 | uncompressed data to the output buffer. */ |
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| 54 | void buffer_uncompress(Buffer *input_buffer, Buffer *output_buffer); |
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| 55 | |
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| 56 | #endif /* COMPRESS_H */ |
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