// Copyright (c) 2016 Google Inc. All rights reserved.

///////////////////////////////////////////////////////////////////////////////
//! \file       xzdec.h
//! \brief      decode a xz compressed input stream.
///////////////////////////////////////////////////////////////////////////////

#ifndef _XZDEC_H_
#define _XZDEC_H_

#if defined (__cplusplus)
extern "C" {
#endif //__cplusplus

#define XZ_MAGIC "\3757zXZ"
#define XZ_MAGIC_SIZE sizeof(XZ_MAGIC)

/** @brief decode a compressed xz stream, only
 *         started with xz_magic supported.
 *
 *
 *  @param in_buf the input stream buffer, contains the full
 *         input data, started with xz_magic.
 *  @param input_size the whole input stream size, including the magic,
 *         in bytes.
 *  @param out_buf the decoded result.
 *  @param output_size the decode output buffer size when used as input,
 *         and final decoded stream length in bytes as output.
 *  @return 0 if success, negative if failed.
 */
int xz_decompress(const unsigned char *in_buf, const unsigned int input_size,
        unsigned char *out_buf, unsigned int *output_size);

#if defined (__cplusplus)
}
#endif //__cplusplus

#endif //_XZDEC_H_