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Restore compressZlib

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This commit is contained in:
Phillip Stephens 2025-01-02 03:44:37 -08:00
parent a681cef0a4
commit af3580fbb3
1 changed files with 35 additions and 0 deletions
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35
src/athena/Compression.cpp
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@ -49,6 +49,41 @@ atInt32 decompressZlib(const atUint8* src, atUint32 srcLen, atUint8* dst, atUint
return ret;
}
atInt32 compressZlib(const atUint8* src, atUint32 srcLen, atUint8* dst, atUint32 dstLen) {
z_stream strm = {};
strm.total_in = strm.avail_in = srcLen;
strm.total_out = strm.avail_out = dstLen;
strm.next_in = (Bytef*)src;
strm.next_out = (Bytef*)dst;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
atInt32 err = -1;
atInt32 ret = -1;
err = deflateInit(&strm, Z_BEST_COMPRESSION);
if (err == Z_OK) {
err = deflate(&strm, Z_FINISH);
if (err == Z_STREAM_END)
ret = strm.total_out;
else {
deflateEnd(&strm);
return err;
}
} else {
deflateEnd(&strm);
return err;
}
deflateEnd(&strm);
return ret;
}
#if AT_LZOKAY
atInt32 decompressLZO(const atUint8* source, const atInt32 sourceSize, atUint8* dst, atInt32& dstSize) {
size_t size = dstSize;