mirror of
https://github.com/peterosterlund2/droidfish.git
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134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
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This Software is distributed with the following X11 License,
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sometimes also known as MIT license.
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Copyright (c) 2010 Miguel A. Ballicora
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*--------------------------------------------------------------------------*\
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| Compressing wrapper functions
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*---------------------------------------------------------------------------*/
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#define MAXBLOCK (1 << 16)
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#include <stdlib.h>
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#include "gtb-dec.h"
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#include "hzip.h"
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#include "wrap.h"
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typedef int bool_t;
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0;
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#endif
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/*static unsigned char intermediate_block[MAXBLOCK] ;*/
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static int DECODE_SCHEME = CP4;
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static int CP_SCHEME = CP4;
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static int f_decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp);
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extern void
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set_decoding_scheme(int x)
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{
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DECODE_SCHEME = x;
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CP_SCHEME = x;
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}
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extern int decoding_scheme(void)
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{
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return DECODE_SCHEME;
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}
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extern int
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decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp)
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{
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return f_decode (z, bz, n, bp);
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}
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/*======================== WRAPPERS ========================*/
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static int
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f_decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp)
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{
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/* bp buffer provided
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| bz buffer "zipped", compressed
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| n len of buffer provided
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| z len of buffer zipped
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\*---------------------------------------------------------------*/
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/*
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unsigned char *ib = intermediate_block;
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unsigned int m;
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return huff_decode (bz, z, ib, &m, MAXBLOCK) && rle_decode (ib, m, bp, &n, MAXBLOCK);
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*/
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if (CP_SCHEME == CP1) {
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/* HUFFMAN */
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return huff_decode (bz, z, bp, &n, MAXBLOCK);
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} else if (CP_SCHEME == CP2) {
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/* LZF */
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return lzf_decode (bz, z, bp, &n, MAXBLOCK);
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} else if (CP_SCHEME == CP3) {
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/* ZLIB */
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return zlib_decode (bz, z, bp, &n, MAXBLOCK);
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} else if (CP_SCHEME == CP4) {
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/* LZMA86 */
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return lzma_decode (bz, z, bp, &n, n); /* maximum needs to be the exact number that it will produce */
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} else if (CP_SCHEME == CP7) {
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/* RLE */
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return rle_decode (bz, z, bp, &n, MAXBLOCK);
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#if defined (LIBBZIP2)
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} else if (CP_SCHEME == CP8) {
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/* BZIP2 */
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return bzip2_decode (bz, z, bp, &n, MAXBLOCK);
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#endif
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} else if (CP_SCHEME == CP9) {
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return justcopy_decode (bz, z, bp, &n, MAXBLOCK);
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} else {
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return FALSE;
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}
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}
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