#include <cudbg_if.h>
#include <cudbg_lib_common.h>
#ifndef FASTLZ_H
#define FASTLZ_H

#define FASTLZ_VERSION 0x000100

#define FASTLZ_VERSION_MAJOR	 0
#define FASTLZ_VERSION_MINOR	 0
#define FASTLZ_VERSION_REVISION  0

#define FASTLZ_VERSION_STRING "0.1.0"

extern struct cudbg_private g_context;

#if defined __cplusplus
extern "C" {
#endif

	/**
	  Compress a block of data in the input buffer and returns the size of
	  compressed block. The size of input buffer is specified by length. The
	  minimum input buffer size is 16.

	  The output buffer must be at least 5% larger than the input buffer
	  and can not be smaller than 66 bytes.

	  If the input is not compressible, the return value might be larger
	  than length (input buffer size).

	  The input buffer and the output buffer can not overlap.
	  */

	int fastlz_compress(const void *input, int length, void *output);

	/**
	  Decompress a block of compressed data and returns the size of the
	  decompressed block. If error occurs, e.g. the compressed data is
	  corrupted or the output buffer is not large enough, then 0 (zero)
	  will be returned instead.

	  The input buffer and the output buffer can not overlap.

	  Decompression is memory safe and guaranteed not to write the output
	  buffer more than what is specified in maxout.
	  */

	int fastlz_decompress(const void *input, int length, void *output,
			      int maxout);

	/**
	  Compress a block of data in the input buffer and returns the size of
	  compressed block. The size of input buffer is specified by length. The
	  minimum input buffer size is 16.

	  The output buffer must be at least 5% larger than the input buffer
	  and can not be smaller than 66 bytes.

	  If the input is not compressible, the return value might be larger
	  than length (input buffer size).

	  The input buffer and the output buffer can not overlap.

	  Compression level can be specified in parameter level. At the moment,
	  only level 1 and level 2 are supported.
	  Level 1 is the fastest compression and generally useful for short
	  data.
	  Level 2 is slightly slower but it gives better compression ratio.

	  Note that the compressed data, regardless of the level, can always be
	  decompressed using the function fastlz_decompress above.
	  */

	int fastlz_compress_level(int level, const void *input, int length,
				  void *output);

#if defined __cplusplus
}
#endif

#endif /* FASTLZ_H */

int fastlz_compress(const void *input, int length, void *output);
int fastlz_compress_level(int level, const void *input, int length,
			  void *output);
int fastlz_decompress(const void *input, int length, void *output, int maxout);

/* prototypes */

int write_magic(struct cudbg_buffer *);
int detect_magic(struct cudbg_buffer *);

int write_to_buf(void *, u32, u32 *, void *, u32);
int read_from_buf(void *, u32, u32 *, void *,  u32);

int write_chunk_header(struct cudbg_buffer *, int, int, unsigned long,
		       unsigned long, unsigned long);

int read_chunk_header(struct cudbg_buffer *, int* , int*, unsigned long*,
		      unsigned long*, unsigned long*);

unsigned long block_compress(const unsigned char *, unsigned long length,
			     unsigned char *);