/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

* Redistribution and use in source and binary forms, with or without 

* modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this 

* list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice, 

* this list of conditions and the following disclaimer in the documentation 

* and/or other materials provided with the distribution.

* Neither the name of Nokia Corporation nor the names of its contributors 

* may be used to endorse or promote products derived from this software 

* without specific prior written permission.

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 

* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 

* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 

* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

* Description:

*

*/

#ifndef HEADER_COMP_H

#define HEADER_COMP_H

#if (defined(__SYMBIAN32__) && !defined(SYMBIAN))

#define SYMBIAN

#endif

#ifdef SYMBIAN

#include <e32def.h>

#endif

#include <openssl/crypto.h>

#ifdef  __cplusplus

extern "C" {

#endif

#ifdef SYMBIAN

#include <e32def.h>

#endif

typedef struct comp_ctx_st COMP_CTX;

typedef struct comp_method_st

	{

	int type;		/* NID for compression library */

	const char *name;	/* A text string to identify the library */

	int (*init)(COMP_CTX *ctx);

	void (*finish)(COMP_CTX *ctx);

	int (*compress)(COMP_CTX *ctx,

			unsigned char *out, unsigned int olen,

			unsigned char *in, unsigned int ilen);

	int (*expand)(COMP_CTX *ctx,

		      unsigned char *out, unsigned int olen,

		      unsigned char *in, unsigned int ilen);

	/* The following two do NOTHING, but are kept for backward compatibility */

	long (*ctrl)(void);

	long (*callback_ctrl)(void);

	} COMP_METHOD;

struct comp_ctx_st

	{

	COMP_METHOD *meth;

	unsigned long compress_in;

	unsigned long compress_out;

	unsigned long expand_in;

	unsigned long expand_out;

	CRYPTO_EX_DATA	ex_data;

	};

IMPORT_C COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);

IMPORT_C void COMP_CTX_free(COMP_CTX *ctx);

IMPORT_C int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,

	unsigned char *in, int ilen);

IMPORT_C int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,

	unsigned char *in, int ilen);

IMPORT_C COMP_METHOD *COMP_rle(void );

IMPORT_C COMP_METHOD *COMP_zlib(void );

/* BEGIN ERROR CODES */

/* The following lines are auto generated by the script mkerr.pl. Any changes

 * made after this point may be overwritten when the script is next run.

 */

IMPORT_C void ERR_load_COMP_strings(void);

/* Error codes for the COMP functions. */

/* Function codes. */

/* Reason codes. */

#ifdef  __cplusplus

}

#endif

#endif