1 /* Portions Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
5 /* uncompr.cpp -- decompress a memory buffer
6 * Copyright (C) 1995-2003 Jean-loup Gailly.
7 * For conditions of distribution and use, see copyright notice in zlib.h
15 /* ===========================================================================
16 Decompresses the source buffer into the destination buffer. sourceLen is
17 the byte length of the source buffer. Upon entry, destLen is the total
18 size of the destination buffer, which must be large enough to hold the
19 entire uncompressed data. (The size of the uncompressed data must have
20 been saved previously by the compressor and transmitted to the decompressor
21 by some mechanism outside the scope of this compression library.)
22 Upon exit, destLen is the actual size of the compressed buffer.
23 This function can be used to decompress a whole file at once if the
24 input file is mmap'ed.
26 uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
27 enough memory, Z_BUF_ERROR if there was not enough room in the output
28 buffer, or Z_DATA_ERROR if the input data was corrupted.
31 EXPORT_C int uncompress_r ( Bytef * dest,uLongf * destLen, const Bytef * source,uLong sourceLen)
33 int ZEXPORT uncompress (dest, destLen, source, sourceLen)
38 #endif //__SYMBIAN32__
43 stream.next_in = (Bytef*)source;
44 stream.avail_in = (uInt)sourceLen;
45 /* Check for source > 64K on 16-bit machine: */
46 if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
48 stream.next_out = dest;
49 stream.avail_out = (uInt)*destLen;
50 if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
52 stream.zalloc = (alloc_func)0;
53 stream.zfree = (free_func)0;
55 err = inflateInit_r(&stream);
56 if (err != Z_OK) return err;
58 err = inflate_r(&stream, Z_FINISH);
59 if (err != Z_STREAM_END) {
60 inflateEnd_r(&stream);
61 if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
65 *destLen = stream.total_out;
67 err = inflateEnd_r(&stream);