comp.h revision 55714 
1
2#ifndef HEADER_COMP_H
3#define HEADER_COMP_H
4
5#ifdef  __cplusplus
6extern "C" {
7#endif
8
9#include <openssl/crypto.h>
10
11typedef 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	} COMP_METHOD;
21
22typedef 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
34COMP_CTX *COMP_CTX_new(COMP_METHOD *meth);
35void COMP_CTX_free(COMP_CTX *ctx);
36int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
37	unsigned char *in, int ilen);
38int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
39	unsigned char *in, int ilen);
40COMP_METHOD *COMP_rle(void );
41#ifdef ZLIB
42COMP_METHOD *COMP_zlib(void );
43#endif
44
45/* BEGIN ERROR CODES */
46/* The following lines are auto generated by the script mkerr.pl. Any changes
47 * made after this point may be overwritten when the script is next run.
48 */
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
60
61