crypto/openssl-0.9.7e/include/openssl/comp.h

   1
   2 #ifndef HEADER_COMP_H
   3 #define HEADER_COMP_H
   4
   5 #include <openssl/crypto.h>
   6
   7 #ifdef  __cplusplus
   8 extern "C" {
   9 #endif
  10
  11 typedef struct comp_method_st
  12         {
  13         int type;               /* NID for compression library */
  14         const 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         long (*callback_ctrl)();
  21         } COMP_METHOD;
  22
  23 typedef struct comp_ctx_st
  24         {
  25         COMP_METHOD *meth;
  26         unsigned long compress_in;
  27         unsigned long compress_out;
  28         unsigned long expand_in;
  29         unsigned long expand_out;
  30
  31         CRYPTO_EX_DATA  ex_data;
  32         } COMP_CTX;
  33
  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 COMP_METHOD *COMP_zlib(void );
  43
  44 /* BEGIN ERROR CODES */
  45 /* The following lines are auto generated by the script mkerr.pl. Any changes
  46  * made after this point may be overwritten when the script is next run.
  47  */
  48 void ERR_load_COMP_strings(void);
  49
  50 /* Error codes for the COMP functions. */
  51
  52 /* Function codes. */
  53
  54 /* Reason codes. */
  55
  56 #ifdef  __cplusplus
  57 }
  58 #endif
  59 #endif