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Annotation of src/usr.bin/ssh/compress.h, Revision 1.3

1.1       deraadt     1: /*
1.2       deraadt     2:  *
                      3:  * compress.h
                      4:  *
                      5:  * Author: Tatu Ylonen <ylo@cs.hut.fi>
                      6:  *
                      7:  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                      8:  *                    All rights reserved
                      9:  *
                     10:  * Created: Wed Oct 25 22:12:46 1995 ylo
                     11:  *
                     12:  * Interface to packet compression for ssh.
                     13:  *
                     14:  */
1.1       deraadt    15:
1.3     ! markus     16: /* RCSID("$Id: compress.h,v 1.2 1999/11/24 00:26:01 deraadt Exp $"); */
1.1       deraadt    17:
                     18: #ifndef COMPRESS_H
                     19: #define COMPRESS_H
                     20:
1.3     ! markus     21: /*
        !            22:  * Initializes compression; level is compression level from 1 to 9 (as in
        !            23:  * gzip).
        !            24:  */
1.2       deraadt    25: void    buffer_compress_init(int level);
1.1       deraadt    26:
                     27: /* Frees any data structures allocated by buffer_compress_init. */
1.2       deraadt    28: void    buffer_compress_uninit();
1.1       deraadt    29:
1.3     ! markus     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:  */
1.2       deraadt    38: void    buffer_compress(Buffer * input_buffer, Buffer * output_buffer);
1.1       deraadt    39:
1.3     ! markus     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:  */
1.2       deraadt    48: void    buffer_uncompress(Buffer * input_buffer, Buffer * output_buffer);
1.1       deraadt    49:
1.2       deraadt    50: #endif                         /* COMPRESS_H */