view audioDB_API.h @ 399:a65b31660804 api-inversion

Invert audioDB::dump / audiodb_dump().

No real API/ABI breakages, modulo the disappearance of
audiodb_dump_withdir() (which really should have been audiodb_dump()
itself from the start).  There were of course ABI breakages in the
previous commits.

The dodgy thing in this patch is the horribleness of audiodb_dump()
itself; there must be a better way of writing it, or at least
abstracting some of the body into individual functional pieces.  The
declaration block at the top tells its own story.

We also need to alter the way that audioDB::status handles the adb;
rather than having a local variable, use the C++ audioDB object instance
field and only open the database if necessary -- then everything has a
consistent view.

#include <stdbool.h>
#include <stdint.h>

/* for API questions contact 
 * Christophe Rhodes [e-mail]
 * Ian Knopke [e-mail], [e-mail] */


/*******************************************************************/
/* Data types for API */

/* Temporary workarounds */
typedef struct dbTableHeader adb_header_t;
int acquire_lock(int, bool);

/* The main struct that stores the name of the database, and in future will hold all
 * kinds of other interesting information */
/* This basically gets passed around to all of the other functions */

struct adb {
  char *path;
  int fd;
  int flags;
  adb_header_t *header;
};
/* FIXME: it might be that "adb_" isn't such a good prefix to use, and
   that we should prefer "audiodb_" */
typedef struct adb adb_t, *adb_ptr;

//used for both insert and batchinsert
struct adbinsert {

    char * features;
    char * power;
    char * key;
    char * times;

};
typedef struct adbinsert adb_insert_t, *adb_insert_ptr;

/* struct for returning status results */
struct adbstatus {
    unsigned int numFiles;  
    unsigned int dim;
    unsigned int dudCount;
    unsigned int nullCount;
    unsigned int flags;
    uint64_t length;
    uint64_t data_region_size;
};
typedef struct adbstatus adb_status_t, *adb_status_ptr;

/* needed for constructing a query */
struct adbquery {

    char * querytype;
    char * feature; //usually a file of some kind
    char * power; //also a file
    char * keylist; //also a file
    char * qpoint;  //position 
    char * numpoints;
    char * radius; 
    char * resultlength; //how many results to make
    char * sequencelength; 
    char * sequencehop; 
    double absolute_threshold; 
    double relative_threshold;
    int exhaustive; //hidden option in gengetopt
    double expandfactor; //hidden
    int rotate; //hidden

};
typedef struct adbquery adb_query_t,*adb_query_ptr;

/* ... and for getting query results back */
struct adbqueryresult {

    int sizeRlist; /* do I really need to return all 4 sizes here */
    int sizeDist;
    int sizeQpos;
    int sizeSpos;
    char **Rlist;
    double *Dist;
    unsigned int *Qpos;
    unsigned int *Spos;

};
typedef struct adbqueryresult adb_queryresult_t, *adb_queryresult_ptr;


/*******************************************************************/
/* Function prototypes for API */


/* open an existing database */
/* returns a struct or NULL on failure */
adb_ptr audiodb_open(const char *path, int flags);

/* create a new database */
/* returns a struct or NULL on failure */
adb_ptr audiodb_create(const char *path, unsigned datasize, unsigned ntracks, unsigned datadim);

/* close a database */
void audiodb_close(adb_ptr db);

/* You'll need to turn both of these on to do anything useful */
int audiodb_l2norm(adb_ptr mydb);
int audiodb_power(adb_ptr mydb);

/* insert functions */
int audiodb_insert(adb_ptr mydb, adb_insert_ptr ins);
int audiodb_batchinsert(adb_ptr mydb, adb_insert_ptr ins, unsigned int size);

/* query function */
int audiodb_query(adb_ptr mydb, adb_query_ptr adbq, adb_queryresult_ptr adbqres);
  
/* database status */  
int audiodb_status(adb_ptr mydb, adb_status_ptr status);

/* varoius dump formats */
int audiodb_dump(adb_ptr mydb, const char *outputdir);