50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
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/*
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Copyright (c) 2011, 2012, Simon Howard
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//
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// Decoder for the -lh5- algorithm.
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//
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// This is the "new" algorithm that appeared in LHA v2, replacing
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// the older -lh1-. -lh4- seems to be identical to -lh5-.
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//
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// 16 KiB history ring buffer:
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#define HISTORY_BITS 14 /* 2^14 = 16384 */
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// Number of bits to encode HISTORY_BITS:
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#define OFFSET_BITS 4
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// Name of the variable for the encoder:
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#define DECODER_NAME lha_lh5_decoder
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// Generate a second decoder for lh4 that just has a different
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// block size.
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#define DECODER2_NAME lha_lh4_decoder
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// The actual algorithm code is contained in lh_new_decoder.c, which
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// acts as a template for -lh4-, -lh5-, -lh6- and -lh7-.
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#include "lh_new_decoder.c"
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