diff -r 000000000000 -r e4d67989cc36 compressionlibs/ziplib/src/zlib/compress.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/compressionlibs/ziplib/src/zlib/compress.cpp Tue Feb 02 02:01:42 2010 +0200 @@ -0,0 +1,103 @@ +/* Portions Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). + * All rights reserved. + */ + +/* compress.cpp -- compress a memory buffer + * Copyright (C) 1995-2003 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#define ZLIB_INTERNAL +#include "libzcore.h" + +/* =========================================================================== + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least 0.1% larger than sourceLen plus + 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ + +#ifdef __SYMBIAN32__ +EXPORT_C int compress2_r (Bytef * dest, uLongf * destLen,const Bytef * source,uLong sourceLen,int level) +#else +int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; + int level; +#endif //__SYMBIAN32__ +{ + z_stream stream; + int err; + + stream.next_in = (Bytef*)source; + stream.avail_in = (uInt)sourceLen; +#ifdef MAXSEG_64K + /* Check for source > 64K on 16-bit machine: */ + if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; +#endif + stream.next_out = dest; + stream.avail_out = (uInt)*destLen; + if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; + + stream.zalloc = (alloc_func)0; + stream.zfree = (free_func)0; + stream.opaque = (voidpf)0; + + err = deflateInit_r(&stream, level); + if (err != Z_OK) return err; + + err = deflate_r(&stream, Z_FINISH); + if (err != Z_STREAM_END) { + deflateEnd_r(&stream); + return err == Z_OK ? Z_BUF_ERROR : err; + } + *destLen = stream.total_out; + + err = deflateEnd_r(&stream); + return err; +} + +/* =========================================================================== + */ + +#ifdef __SYMBIAN32__ +EXPORT_C int compress_r (Bytef * dest, uLongf * destLen, const Bytef * source, uLong sourceLen) +#else +int ZEXPORT compress (dest, destLen, source, sourceLen) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; +#endif //__SYMBIAN32__ +{ + return compress2_r(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); +} + + +/* =========================================================================== + If the default memLevel or windowBits for deflateInit() is changed, then + this function needs to be updated. + */ + + +#ifdef __SYMBIAN32__ +EXPORT_C uLong compressBound_r (uLong sourceLen) +#else +uLong ZEXPORT compressBound (sourceLen) + uLong sourceLen; +#endif //__SYMBIAN32__ +{ + return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11; +} + + +