comp.h
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:2k
- #ifndef HEADER_COMP_H
- #define HEADER_COMP_H
- #include <openssl/crypto.h>
- #ifdef __cplusplus
- extern "C" {
- #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;
- };
- 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