lensfun  0.3.2.0
Classes | Enumerations | Functions
Database functions

Create, destroy and search database for objects. More...

Classes

struct  lfDatabase
 A lens database object. More...
 

Enumerations

enum  { LF_SEARCH_LOOSE = 1, LF_SEARCH_SORT_AND_UNIQUIFY = 2 }
 Flags controlling the behavior of database searches. More...
 

Functions

lfDatabaself_db_new (void)
 Create a new empty database object. More...
 
void lf_db_destroy (lfDatabase *db)
 Destroy the database object. More...
 
lfError lf_db_load (lfDatabase *db)
 
lfError lf_db_load_file (lfDatabase *db, const char *filename)
 
cbool lf_db_load_directory (lfDatabase *db, const char *dirname)
 
lfError lf_db_load_data (lfDatabase *db, const char *errcontext, const char *data, size_t data_size)
 
lfError lf_db_save_all (const lfDatabase *db, const char *filename)
 
lfError lf_db_save_file (const lfDatabase *db, const char *filename, const lfMount *const *mounts, const lfCamera *const *cameras, const lfLens *const *lenses)
 
char * lf_db_save (const lfMount *const *mounts, const lfCamera *const *cameras, const lfLens *const *lenses)
 
const lfCamera ** lf_db_find_cameras (const lfDatabase *db, const char *maker, const char *model)
 
const lfCamera ** lf_db_find_cameras_ext (const lfDatabase *db, const char *maker, const char *model, int sflags)
 
const lfCamera *const * lf_db_get_cameras (const lfDatabase *db)
 
const lfLens ** lf_db_find_lenses_hd (const lfDatabase *db, const lfCamera *camera, const char *maker, const char *lens, int sflags)
 
const lfLens ** lf_db_find_lenses (const lfDatabase *db, const lfLens *lens, int sflags)
 
const lfLens *const * lf_db_get_lenses (const lfDatabase *db)
 
const lfMountlf_db_find_mount (const lfDatabase *db, const char *mount)
 
const char * lf_db_mount_name (const lfDatabase *db, const char *mount)
 
const lfMount *const * lf_db_get_mounts (const lfDatabase *db)
 

Detailed Description

Create, destroy and search database for objects.

Enumeration Type Documentation

anonymous enum

Flags controlling the behavior of database searches.

Enumerator
LF_SEARCH_LOOSE 

This flag selects a looser search algorithm resulting in more results (still sorted by score).

If it is not present, all results where at least one of the input words is missing will be discarded.

LF_SEARCH_SORT_AND_UNIQUIFY 

This flag makes Lensfun to sort the results by focal length, and remove all double lens names.

If a lens has entries for different crop factors/aspect ratios, the only best match is included into the result. This is meant to be used to create a list presented to the user to pick a lens. Or, to lookup a lens for which you know maker and model exactly, and to check whether the result list really contains only one element.

Function Documentation

void lf_db_destroy ( lfDatabase db)

Destroy the database object.

This is the only way to correctly destroy the database object.

Parameters
dbThe database to destroy.
See Also
lfDatabase::~lfDatabase
Examples:
example.c.
const lfCamera** lf_db_find_cameras ( const lfDatabase db,
const char *  maker,
const char *  model 
)
const lfCamera** lf_db_find_cameras_ext ( const lfDatabase db,
const char *  maker,
const char *  model,
int  sflags 
)
const lfLens** lf_db_find_lenses ( const lfDatabase db,
const lfLens lens,
int  sflags 
)
See Also
lfDatabase::FindLenses(const lfCamera *, const lfLens *)
const lfLens** lf_db_find_lenses_hd ( const lfDatabase db,
const lfCamera camera,
const char *  maker,
const char *  lens,
int  sflags 
)
See Also
lfDatabase::FindLenses(const lfCamera *, const char *, const char *)
const lfMount* lf_db_find_mount ( const lfDatabase db,
const char *  mount 
)
const lfCamera* const* lf_db_get_cameras ( const lfDatabase db)
See Also
lfDatabase::GetCameras
Examples:
example.c.
const lfLens* const* lf_db_get_lenses ( const lfDatabase db)
See Also
lfDatabase::GetLenses
Examples:
example.c.
const lfMount* const* lf_db_get_mounts ( const lfDatabase db)
See Also
lfDatabase::GetMounts
Examples:
example.c.
lfError lf_db_load ( lfDatabase db)
See Also
lfDatabase::Load()
Examples:
example.c.
lfError lf_db_load_data ( lfDatabase db,
const char *  errcontext,
const char *  data,
size_t  data_size 
)
cbool lf_db_load_directory ( lfDatabase db,
const char *  dirname 
)
lfError lf_db_load_file ( lfDatabase db,
const char *  filename 
)
const char* lf_db_mount_name ( const lfDatabase db,
const char *  mount 
)
See Also
lfDatabase::MountName
Examples:
example.c, and tfun.cpp.
lfDatabase* lf_db_new ( void  )

Create a new empty database object.

Usually the application will want to do this at startup, after which it would be a good idea to call lf_db_load().

Returns
A new empty database object.
See Also
lfDatabase::lfDatabase
Examples:
example.c, and tfun.cpp.
char* lf_db_save ( const lfMount *const *  mounts,
const lfCamera *const *  cameras,
const lfLens *const *  lenses 
)
lfError lf_db_save_all ( const lfDatabase db,
const char *  filename 
)
See Also
lfDatabase::Save(const char *)
lfError lf_db_save_file ( const lfDatabase db,
const char *  filename,
const lfMount *const *  mounts,
const lfCamera *const *  cameras,
const lfLens *const *  lenses 
)
See Also
lfDatabase::Save(const char *, const lfMount *const *, const lfCamera *const *, const lfLens *const *)
Examples:
example.c.