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comp.h

#ifndef HEADER_COMP_H
#define HEADER_COMP_H

#include <openssl/crypto.h>

#ifdef  __cplusplus
extern "C" {
#endif

typedef struct comp_method_st
      {
      int type;         /* NID for compression library */
      const char *name; /* A text string to identify the library */
      int (*init)();
      void (*finish)();
      int (*compress)();
      int (*expand)();
      long (*ctrl)();
      long (*callback_ctrl)();
      } COMP_METHOD;

typedef 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;
      } COMP_CTX;


COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);
void COMP_CTX_free(COMP_CTX *ctx);
int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
      unsigned char *in, int ilen);
int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
      unsigned char *in, int ilen);
COMP_METHOD *COMP_rle(void );
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.
 */
void ERR_load_COMP_strings(void);

/* Error codes for the COMP functions. */

/* Function codes. */

/* Reason codes. */

#ifdef  __cplusplus
}
#endif
#endif

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