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Commitbfb6af8

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moduzlib: Import uzlib v1.1.
https://github.com/pfalcon/uzlib
1 parent3416287 commitbfb6af8

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4 files changed

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4 files changed

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lines changed

‎extmod/uzlib/adler32.c‎

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/*
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* Adler-32 checksum
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*
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* Copyright (c) 2003 by Joergen Ibsen / Jibz
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* All Rights Reserved
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*
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* http://www.ibsensoftware.com/
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*
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* This software is provided 'as-is', without any express
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* or implied warranty. In no event will the authors be
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* held liable for any damages arising from the use of
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* this software.
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*
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* Permission is granted to anyone to use this software
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* for any purpose, including commercial applications,
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* and to alter it and redistribute it freely, subject to
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* the following restrictions:
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*
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* 1. The origin of this software must not be
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* misrepresented; you must not claim that you
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* wrote the original software. If you use this
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* software in a product, an acknowledgment in
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* the product documentation would be appreciated
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* but is not required.
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*
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* 2. Altered source versions must be plainly marked
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* as such, and must not be misrepresented as
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* being the original software.
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*
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* 3. This notice may not be removed or altered from
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* any source distribution.
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*/
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/*
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* Adler-32 algorithm taken from the zlib source, which is
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* Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
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*/
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#include"tinf.h"
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#defineA32_BASE 65521
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#defineA32_NMAX 5552
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unsignedinttinf_adler32(constvoid*data,unsignedintlength)
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{
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constunsignedchar*buf= (constunsignedchar*)data;
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unsignedints1=1;
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unsignedints2=0;
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while (length>0)
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{
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intk=length<A32_NMAX ?length :A32_NMAX;
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inti;
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for (i=k /16;i;--i,buf+=16)
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{
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s1+=buf[0];s2+=s1;s1+=buf[1];s2+=s1;
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s1+=buf[2];s2+=s1;s1+=buf[3];s2+=s1;
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s1+=buf[4];s2+=s1;s1+=buf[5];s2+=s1;
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s1+=buf[6];s2+=s1;s1+=buf[7];s2+=s1;
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s1+=buf[8];s2+=s1;s1+=buf[9];s2+=s1;
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s1+=buf[10];s2+=s1;s1+=buf[11];s2+=s1;
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s1+=buf[12];s2+=s1;s1+=buf[13];s2+=s1;
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s1+=buf[14];s2+=s1;s1+=buf[15];s2+=s1;
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}
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for (i=k %16;i;--i) {s1+=*buf++;s2+=s1; }
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s1 %=A32_BASE;
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s2 %=A32_BASE;
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length-=k;
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}
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return (s2 <<16) |s1;
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}

‎extmod/uzlib/tinf.h‎

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/*
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* uzlib - tiny deflate/inflate library (deflate, gzip, zlib)
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*
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* Copyright (c) 2003 by Joergen Ibsen / Jibz
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* All Rights Reserved
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* http://www.ibsensoftware.com/
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*
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* Copyright (c) 2014 by Paul Sokolovsky
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*/
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#ifndefTINF_H_INCLUDED
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#defineTINF_H_INCLUDED
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#include<stdint.h>
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/* calling convention */
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#ifndefTINFCC
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#ifdef__WATCOMC__
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#defineTINFCC __cdecl
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#else
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#defineTINFCC
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#endif
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#endif
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#ifdef__cplusplus
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extern"C" {
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#endif
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#defineTINF_OK 0
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#defineTINF_DATA_ERROR (-3)
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#defineTINF_DEST_OVERFLOW (-4)
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/* data structures */
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typedefstruct {
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unsigned shorttable[16];/* table of code length counts */
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unsigned shorttrans[288];/* code -> symbol translation table */
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}TINF_TREE;
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structTINF_DATA;
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typedefstructTINF_DATA {
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constunsignedchar*source;
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unsignedinttag;
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unsignedintbitcount;
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/* Buffer start */
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unsignedchar*destStart;
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/* Buffer total size */
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unsignedintdestSize;
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/* Current pointer in buffer */
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unsignedchar*dest;
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/* Remaining bytes in buffer */
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unsignedintdestRemaining;
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/* Argument is the allocation size which didn't fit into buffer. Note that
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exact mimumum size to grow buffer by is lastAlloc - destRemaining. But
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growing by this exact size is ineficient, as the next allocation will
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fail again. */
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int (*destGrow)(structTINF_DATA*data,unsignedintlastAlloc);
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TINF_TREEltree;/* dynamic length/symbol tree */
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TINF_TREEdtree;/* dynamic distance tree */
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}TINF_DATA;
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/* low-level API */
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/* Step 1: Allocate TINF_DATA structure */
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/* Step 2: Set destStart, destSize, and destGrow fields */
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/* Step 3: Set source field */
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/* Step 4: Call tinf_uncompress_dyn() */
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/* Step 5: In response to destGrow callback, update destStart and destSize fields */
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/* Step 6: When tinf_uncompress_dyn() returns, buf.dest points to a byte past last uncompressed byte */
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intTINFCCtinf_uncompress_dyn(TINF_DATA*d);
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intTINFCCtinf_zlib_uncompress_dyn(TINF_DATA*d,unsignedintsourceLen);
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/* high-level API */
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voidTINFCCtinf_init();
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intTINFCCtinf_uncompress(void*dest,unsignedint*destLen,
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constvoid*source,unsignedintsourceLen);
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intTINFCCtinf_gzip_uncompress(void*dest,unsignedint*destLen,
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constvoid*source,unsignedintsourceLen);
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intTINFCCtinf_zlib_uncompress(void*dest,unsignedint*destLen,
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constvoid*source,unsignedintsourceLen);
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unsignedintTINFCCtinf_adler32(constvoid*data,unsignedintlength);
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unsignedintTINFCCtinf_crc32(constvoid*data,unsignedintlength);
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/* compression API */
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voidTINFCCtinf_compress(void*data,constuint8_t*src,unsignedslen);
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#ifdef__cplusplus
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}/* extern "C" */
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#endif
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#endif/* TINF_H_INCLUDED */

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