include/u-boot/zlib.h

2  * This file is derived from zlib.h and zconf.h from the zlib-1.2.3
3  * distribution by Jean-loup Gailly and Mark Adler, with some additions
12   * whether an up-to-date version of this file is already installed.
15 /* zlib.h -- interface of the 'zlib' general purpose compression library
18   Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
20   This software is provided 'as-is', without any express or implied
36   Jean-loup Gailly        Mark Adler
56 /* zconf.h -- configuration of the zlib compression library
57  * Copyright (C) 1995-2005 Jean-loup Gailly.
64  * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
136  * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
137  * than 64k bytes at a time (needed on systems with 16-bit int).
207      make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
381      The 'zlib' compression library provides in-memory compression and
393      The compressed data format used by default by the in-memory functions is
402      This library can optionally read and write gzip streams in memory as well.
405   and on communications channels.  The gzip format was designed for single-
453 	Bytef	*name; /* pointer to zero-terminated file name or Z_NULL */
455 	Bytef	*comment; /* pointer to zero-terminated comment or Z_NULL */
476 #define Z_ERRNO        (-1)
477 #define Z_STREAM_ERROR (-2)
478 #define Z_DATA_ERROR   (-3)
479 #define Z_MEM_ERROR    (-4)
480 #define Z_BUF_ERROR    (-5)
481 #define Z_VERSION_ERROR (-6)
489 #define Z_DEFAULT_COMPRESSION  (-1)
561   - Decompress more input starting at next_in and update next_in and avail_in
566   - Provide more output starting at next_out and update next_out and avail_out
590   Also to assist in this, on return inflate() will set strm->data_type to the
591   number of unused bits in the last byte taken from strm->next_in, plus 64
593   plus 128 if inflate() returned immediately after decoding an end-of-block
595   deflate stream. The end-of-block will not be indicated until all of the
596   uncompressed data from that block has been written to strm->next_out.  The
619   below), inflate sets strm->adler to the adler32 checksum of the dictionary
621   strm->adler to the adler32 checksum of all output produced so far (that is,
627     inflate() will decompress and check either zlib-wrapped or gzip-wrapped
668    basic stream-oriented functions. To simplify the interface, some
676      Update a running Adler-32 checksum with the bytes buf[0..len-1] and
679    An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
691      Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
692    and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
693    each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
699      Update a running CRC-32 with the bytes buf[0..len-1] and return the
700    updated CRC-32. If buf is NULL, this function returns the required initial
701    value for the for the crc. Pre- and post-conditioning (one's complement) is