client/src/client/daqc_internal.h

/* -*- mode: c; c-basic-offset: 4; -*- */
#ifndef DAQC_INTERNAL_H
#define DAQC_INTERNAL_H

#include "daqc.h"

struct daq_block_header {
    uint4_type secs;

    uint4_type gps;

    uint4_type gpsn;

    uint4_type seq_num;

    char data [1];
};

/*                   Signal_conv_t1 (internal??)
 */

typedef struct signal_conv1 {
    float signal_slope;
    float signal_offset;
    uint4_type   signal_status;
} signal_conv_t1;


/*                   Channel Group interface (obsolete)
 */

typedef struct {
    int group_num;
    char name [MAX_CHANNEL_NAME_LENGTH + 1];
} daq_channel_group_t;


int
daq_recv_channel_groups (daq_t* daq, daq_channel_group_t* group, 
                         int num_groups, int* num_channel_groups_received);


/*                   Internal NDS1/2 functions
 */
int
daq_set_server(daq_t *daq, const char* host, int port);


/*                   Internal NDS1 functions
 */

#define MAX_RCV_CNT 100000
#define DAQC_ACCESS_VERBOSE_ERRORS 1

long
read_server_response(int fd);

long
read_server_response_wait(int fd, int wt);

int
swap_data(int gran, int nBytes, char* data);

enum chantype
cvt_group_chantype(int group_num);


long
dca_strtol (char *str);

/*  Wait for data on the specified port. 
 *  return values:
 *   1 Data available
 *   0 Timeout.
 *  -1 Error
 */
int
wait_data(int fd, int wt);

/* 
 *   Read `numb' bytes.
 *  Returns number of bytes read or 0 on the error or EOF
 */
int
read_bytes (int fd, char *cptr, int numb);

/*  read_float(int fd, float*)
 *
 *  read a float from the indicated fd and swap bytes from network
 *  byte ordering (big-endian) to host byte ordering.
 */
int
read_float(int fd, float* data);

/*  Read a 4-byte `long' integer. The byte ordering is swapped on little-
 *  endian machines. return 0 if read successful, 1 if not.
 */
int
read_long (int fd, int* data);

/*  Read a 4-byte `long' integer. The byte ordering is swapped on little-
 *  endian machines. return 0 if read successful, 1 if not.
 */
int
read_uint4 (int fd, uint4_type* data);

/*
 *  Read an NDS2 byte-counted string from the specified fd. The string is 
 *  transferred as an integer byte-count followed by text.
 */
int
read_string(int fd, int maxlen, char* buf);

int
null_term(char* p, int len);

int 
get_string(char** p, char* out, int lmax);

/*  cvt_string(long, char*)
 *
 *  convert the specified long int to a string
 */
int
cvt_string(long in, char* out);

#endif // !defined(DAQC_INTERNAL_H)

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