int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
unsigned char *in, int ilen);
COMP_METHOD *COMP_rle(void );
int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
unsigned char *in, int ilen);
COMP_METHOD *COMP_rle(void );