/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* 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