view audioDBws.h @ 400:8c7453fb5bd9 api-inversion

Invert audioDB::power_flag / audiodb_power()

Here the exciting discovery is that the mmap(), memcpy(), munmap()
sequence is in fact not safe.  In principle an msync() call should be
inserted before unmapping for in-core changes to mmap()ed files to be
flushed to disk.

In this case we work around the problem entirely, by not mmap()ing
anything and doing everything with file descriptors.  Amusingly, that's
probably not desperately safe either, this time because we have to move
the file descriptor position (which is also a shared resource).  dup()
doesn't save us, as the duplicate file descriptor shares a file
position.

This applies also to the filling of data_buffer in the query loop, and
in fact basically any call to lseek(), which is why I'm not fixing it
now.  Solution: if you have multiple threads all acting at once on a
single database, do one audiodb_open() per thread, for now at least.

// audioDBws.h -- web services interface to audioDB
//
//FIXME: this hard-coding of the service location might be right for
//its internal use at Goldsmiths (for now) but really isn't in
//general.  Find a way to bind this later (at install time?  Or maybe
//just require that the installer edit the resulting wsdl file?)
//
//gsoap adb service location: http://gibbons.doc.gold.ac.uk:20703/

typedef int xsd__int;
typedef double xsd__double;
typedef char* xsd__string;

// Supports result lists of arbitrary length
struct adb__queryResult{
  int __sizeRlist;
  char **Rlist; // Maximum size of result list
  int __sizeDist;  
  double *Dist;
  int __sizeQpos;  
  unsigned int *Qpos;
  int __sizeSpos;
  unsigned int *Spos;
};

struct adb__statusResult {
  unsigned numFiles;
  unsigned dim;
  unsigned length;
  unsigned dudCount;
  unsigned nullCount;
  unsigned flags;
};

struct adb__statusResponse {
  struct adb__statusResult result;
};

struct adb__queryResponse {
  struct adb__queryResult result;
};

struct adb__lisztResult {
  int __sizeRkey;
  char **Rkey;
  int __sizeRlen;
  unsigned int *Rlen;
};

struct adb__queryVector {
  int dim; // dimensionality of the feature (d)
  int __sizev; // l x d :
  double *v;   // pointer to query data
  int __sizep;
  double *p;
};

struct adb__lisztResponse {
  struct adb__lisztResult result;
};

// Print the status of an existing adb database
int adb__status(xsd__string dbName, struct adb__statusResponse &adbStatusResponse);

// Print the status of an existing adb database
int adb__liszt(xsd__string dbName, xsd__int lisztOffset, xsd__int lisztLength, struct adb__lisztResponse &adbLisztResponse);

// Query an existing adb database
int adb__query(xsd__string dbName, xsd__string qKey, xsd__string keyList, xsd__string timesFileName, xsd__string powerFileName, xsd__int qType, xsd__int qPos, xsd__int pointNN, xsd__int segNN, xsd__int segLen, xsd__double radius, xsd__double absolute_threshold, xsd__double relative_threshold, xsd__int exhaustive, xsd__int lsh_exact, struct adb__queryResponse &adbQueryResponse);

int adb__sequenceQueryByKey(xsd__string dbName,xsd__string trackKey, xsd__string featureFileName, xsd__int queryType,xsd__string trackFileName,xsd__string timesFileName,xsd__int queryPoint,xsd__int pointNN,xsd__int trackNN,xsd__int sequenceLength,xsd__double radius,xsd__double absolute_threshold,xsd__int usingQueryPoint,xsd__int lsh_exact,struct adb__queryResponse &adbQueryResponse);

// Query an audioDB database by vector (serialized), queryKey/featureFileName is here replaced with qVector
int adb__shingleQuery(xsd__string dbName, struct adb__queryVector qVector, xsd__string keyList, xsd__string timesFileName, xsd__int queryType, xsd__int queryPos, xsd__int pointNN, xsd__int trackNN, xsd__int sequenceLength, xsd__double radius, xsd__double absolute_threshold, xsd__double relative_threshold, xsd__int exhaustive, xsd__int lsh_exact, struct adb__queryResponse &adbQueryResponse);