crypto/comp/comp.h

   1
   2 #ifndef HEADER_COMP_H
   3 #define HEADER_COMP_H
   4
   5 #ifdef  __cplusplus
   6 extern "C" {
   7 #endif
   8
   9 #include "crypto.h"
  10
  11 typedef struct comp_method_st
  12         {
  13         int type;               /* NID for compression library */
  14         char *name;             /* A text string to identify the library */
  15         int (*init)();
  16         void (*finish)();
  17         int (*compress)();
  18         int (*expand)();
  19         long (*ctrl)();
  20         } COMP_METHOD;
  21
  22 typedef struct comp_ctx_st
  23         {
  24         COMP_METHOD *meth;
  25         unsigned long compress_in;
  26         unsigned long compress_out;
  27         unsigned long expand_in;
  28         unsigned long expand_out;
  29
  30         CRYPTO_EX_DATA  ex_data;
  31         } COMP_CTX;
  32
  33 #ifndef NOPROTO
  34
  35 COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);
  36 void COMP_CTX_free(COMP_CTX *ctx);
  37 int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
  38         unsigned char *in, int ilen);
  39 int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
  40         unsigned char *in, int ilen);
  41 COMP_METHOD *COMP_rle(void );
  42 #ifdef ZLIB
  43 COMP_METHOD *COMP_zlib(void );
  44 #endif
  45
  46 #else
  47
  48 COMP_CTX *COMP_CTX_new();
  49 void COMP_CTX_free();
  50 int COMP_compress_block();
  51 int COMP_expand_block();
  52 COMP_METHOD *COMP_rle();
  53 #ifdef ZLIB
  54 COMP_METHOD *COMP_zlib();
  55 #endif
  56
  57 #endif
  58 /* BEGIN ERROR CODES */
  59
  60 #ifdef  __cplusplus
  61 }
  62 #endif
  63 #endif
  64