diff options
author | Sakitoshi | 2019-01-23 21:51:34 -0300 |
---|---|---|
committer | GitHub | 2019-01-23 21:51:34 -0300 |
commit | e424c297b7b714cf2f25582cf9b4fc30cba5599f (patch) | |
tree | ea7e23977f5403d1c5ed3e18b27d03e53e778810 /deps/uncompr.c | |
parent | de95fedd6981b4608cb78180e3bddde7e675223c (diff) | |
parent | c8e850f3584ba1eea367373d76d8b768a58d6d2c (diff) | |
download | pcsx_rearmed-e424c297b7b714cf2f25582cf9b4fc30cba5599f.tar.gz pcsx_rearmed-e424c297b7b714cf2f25582cf9b4fc30cba5599f.tar.bz2 pcsx_rearmed-e424c297b7b714cf2f25582cf9b4fc30cba5599f.zip |
Merge pull request #1 from libretro/master
catch up to libretro repo
Diffstat (limited to 'deps/uncompr.c')
-rw-r--r-- | deps/uncompr.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/deps/uncompr.c b/deps/uncompr.c new file mode 100644 index 0000000..c7e30b3 --- /dev/null +++ b/deps/uncompr.c @@ -0,0 +1,55 @@ +/* uncompr.c -- decompress a memory buffer + * Copyright (C) 1995-2003, 2010 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#define ZLIB_INTERNAL +#include "zlib.h" + +/* =========================================================================== + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be large enough to hold the + entire uncompressed data. (The size of the uncompressed data must have + been saved previously by the compressor and transmitted to the decompressor + by some mechanism outside the scope of this compression library.) + Upon exit, destLen is the actual size of the compressed buffer. + + uncompress 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, or Z_DATA_ERROR if the input data was corrupted. + */ +int ZEXPORT uncompress (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen) +{ + z_stream stream; + int err; + + stream.next_in = (Bytef *)source; + stream.avail_in = (uInt)sourceLen; + /* Check for source > 64K on 16-bit machine: */ + if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; + + stream.next_out = dest; + stream.avail_out = (uInt)*destLen; + if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; + + stream.zalloc = Z_NULL; + stream.zfree = Z_NULL; + + err = inflateInit(&stream); + if (err != Z_OK) return err; + + err = inflate(&stream, Z_FINISH); + if (err != Z_STREAM_END) { + inflateEnd(&stream); + if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) + return Z_DATA_ERROR; + return err; + } + *destLen = stream.total_out; + + err = inflateEnd(&stream); + return err; +} |