lensfun 0.3.2.0
lensfun.h
Go to the documentation of this file.
1/* -*- mode:c++ -*- */
2/*
3 Lensfun - a library for maintaining a database of photographical lenses,
4 and providing the means to correct some of the typical lens distortions.
5 Copyright (C) 2007 by Andrew Zabolotny
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public
18 License along with this library; if not, write to the Free
19 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20*/
21
22#ifndef __LENSFUN_H__
23#define __LENSFUN_H__
24
25#include <stddef.h>
26
27#ifdef __cplusplus
28extern "C" {
30# define C_TYPEDEF(t,c)
31#else
32# define C_TYPEDEF(t,c) typedef t c c;
33#endif
34
40/*----------------------------------------------------------------------------*/
41
49#define LF_VERSION_MAJOR 0
51#define LF_VERSION_MINOR 3
53#define LF_VERSION_MICRO 2
55#define LF_VERSION_BUGFIX 0
57#define LF_VERSION ((LF_VERSION_MAJOR << 24) | (LF_VERSION_MINOR << 16) | (LF_VERSION_MICRO << 8) | LF_VERSION_BUGFIX)
58
60#define LF_MAX_DATABASE_VERSION 1
61
62#if defined CONF_LENSFUN_STATIC
64# define LF_EXPORT
65#else
66# ifdef CONF_SYMBOL_VISIBILITY
67# if defined PLATFORM_WINDOWS
68# define LF_EXPORT __declspec(dllexport)
69# elif defined CONF_COMPILER_GCC || __clang__
70# define LF_EXPORT __attribute__((visibility("default")))
71# else
72# error "I don't know how to change symbol visibility for your compiler"
73# endif
74# else
75# if defined PLATFORM_WINDOWS || defined _MSC_VER
76# define LF_EXPORT __declspec(dllimport)
77# else
78# define LF_EXPORT
79# endif
80# endif
81#endif
82
83#ifndef CONF_LENSFUN_INTERNAL
85# ifdef __GNUC__
86# define DEPRECATED __attribute__((deprecated))
87# elif defined(_MSC_VER)
88# define DEPRECATED __declspec(deprecated)
89# else
90# pragma message("WARNING: You need to implement DEPRECATED for this compiler")
91# define DEPRECATED
92# endif
93#else
94# define DEPRECATED
95#endif
96
98#define cbool int
99
108typedef char *lfMLstr;
109
112{
120
121C_TYPEDEF (enum, lfError)
122
123
124typedef unsigned char lf_u8;
126typedef unsigned short lf_u16;
128typedef unsigned int lf_u32;
130typedef float lf_f32;
132typedef double lf_f64;
133
142LF_EXPORT void lf_free (void *data);
143
152LF_EXPORT const char *lf_mlstr_get (const lfMLstr str);
153
170LF_EXPORT lfMLstr lf_mlstr_add (lfMLstr str, const char *lang, const char *trstr);
171
181
184/*----------------------------------------------------------------------------*/
185
202{
210 char **Compat;
211
212#ifdef __cplusplus
217
221 lfMount &operator = (const lfMount &other);
222
227
238 void SetName (const char *val, const char *lang = NULL);
239
245 void AddCompat (const char *val);
246
252 bool Check ();
253#endif
254};
255
256C_TYPEDEF (struct, lfMount)
257
258
266
277
287LF_EXPORT void lf_mount_copy (lfMount *dest, const lfMount *source);
288
291
294/*----------------------------------------------------------------------------*/
295
314{
322 char *Mount;
326 int Score;
327
328#ifdef __cplusplus
333
337 lfCamera (const lfCamera &other);
338
343
347 lfCamera &operator = (const lfCamera &other);
348
359 void SetMaker (const char *val, const char *lang = NULL);
360
371 void SetModel (const char *val, const char *lang = NULL);
372
383 void SetVariant (const char *val, const char *lang = NULL);
384
390 void SetMount (const char *val);
391
397 bool Check ();
398#endif
399};
400
401C_TYPEDEF (struct, lfCamera)
402
403
411
422
432LF_EXPORT void lf_camera_copy (lfCamera *dest, const lfCamera *source);
433
436
439/*----------------------------------------------------------------------------*/
440
462{
490};
491
493
494
501{
505 float Focal;
507 float Terms [3];
508};
509
511
512
526{
541
555
556C_TYPEDEF (enum, lfTCAModel)
557
558
566{
570 float Focal;
572 float Terms [6];
573};
574
576
577
594{
608
610
611
619{
623 float Focal;
625 float Aperture;
627 float Distance;
629 float Terms [3];
630};
631
633
634
638{
646
648
649
653{
655 float Focal;
666 float Crop [4];
667};
668
670
671
679{
681 float Focal;
692};
693
695
696
701{
703 float Focal;
716};
717
719
720
724{
726 const char *Name;
728 float Min;
730 float Max;
732 float Default;
733};
734
735C_TYPEDEF (struct, lfParameter)
736
737
741{
782
783C_TYPEDEF (enum, lfLensType)
784
785
796{
802 float MinFocal;
804 float MaxFocal;
810 char **Mounts;
820 float CenterX;
822 float CenterY;
842 int Score;
843
844#ifdef __cplusplus
849
853 lfLens (const lfLens &other);
854
859
863 lfLens &operator = (const lfLens &other);
864
875 void SetMaker (const char *val, const char *lang = NULL);
876
887 void SetModel (const char *val, const char *lang = NULL);
888
896 void AddMount (const char *val);
897
907
913 bool RemoveCalibDistortion (int idx);
914
924 void AddCalibTCA (const lfLensCalibTCA *tcac);
925
931 bool RemoveCalibTCA (int idx);
932
942
948 bool RemoveCalibVignetting (int idx);
949
959
965 bool RemoveCalibCrop (int idx);
966
979
990
1000
1007 bool RemoveCalibRealFocal (int idx);
1008
1018
1024 bool Check ();
1025
1041 static const char *GetDistortionModelDesc (
1042 lfDistortionModel model, const char **details, const lfParameter ***params);
1058 static const char *GetTCAModelDesc (
1059 lfTCAModel model, const char **details, const lfParameter ***params);
1060
1076 static const char *GetVignettingModelDesc (
1077 lfVignettingModel model, const char **details, const lfParameter ***params);
1078
1094 static const char *GetCropDesc (
1095 lfCropMode mode, const char **details, const lfParameter ***params);
1096
1108 static const char *GetLensTypeDesc (lfLensType type, const char **details);
1109
1117 bool InterpolateDistortion (float focal, lfLensCalibDistortion &res) const;
1118
1126 bool InterpolateTCA (float focal, lfLensCalibTCA &res) const;
1127
1142 float focal, float aperture, float distance, lfLensCalibVignetting &res) const;
1143
1151 bool InterpolateCrop (float focal, lfLensCalibCrop &res) const;
1152
1164 DEPRECATED bool InterpolateFov (float focal, lfLensCalibFov &res) const;
1165
1177 bool InterpolateRealFocal (float focal, lfLensCalibRealFocal &res) const;
1178#endif
1179};
1180
1181C_TYPEDEF (struct, lfLens)
1182
1183
1191
1202
1212LF_EXPORT void lf_lens_copy (lfLens *dest, const lfLens *source);
1213
1216
1219
1222 enum lfDistortionModel model, const char **details, const lfParameter ***params);
1223
1226 enum lfTCAModel model, const char **details, const lfParameter ***params);
1227
1230 enum lfVignettingModel model, const char **details, const lfParameter ***params);
1231
1234 enum lfCropMode mode, const char **details, const lfParameter ***params);
1235
1238 enum lfLensType type, const char **details);
1239
1243
1246
1248LF_EXPORT cbool lf_lens_interpolate_vignetting (const lfLens *lens, float focal, float aperture,
1249 float distance, lfLensCalibVignetting *res);
1250
1253 lfLensCalibCrop *res);
1254
1257 lfLensCalibFov *res);
1258
1262
1265
1268
1271
1274
1277
1280
1283
1286
1289
1292
1295
1298
1301/*----------------------------------------------------------------------------*/
1302
1312enum
1313{
1335
1359{
1365
1366#ifdef __cplusplus
1367 lfDatabase ();
1368 ~lfDatabase ();
1369
1373 static lfDatabase *Create ();
1374
1378 void Destroy ();
1379
1390 bool LoadDirectory (const char *dirname);
1391
1400
1413 lfError Load (const char *filename);
1414
1429 lfError Load (const char *errcontext, const char *data, size_t data_size);
1430
1438 lfError Save (const char *filename) const;
1439
1453 lfError Save (const char *filename,
1454 const lfMount *const *mounts,
1455 const lfCamera *const *cameras,
1456 const lfLens *const *lenses) const;
1457
1470 static char *Save (const lfMount *const *mounts,
1471 const lfCamera *const *cameras,
1472 const lfLens *const *lenses);
1473
1498 const lfCamera **FindCameras (const char *maker, const char *model) const;
1499
1520 const lfCamera **FindCamerasExt (const char *maker, const char *model,
1521 int sflags = 0) const;
1522
1530 const lfCamera *const *GetCameras () const;
1531
1569 const lfLens **FindLenses (const lfCamera *camera, const char *maker,
1570 const char *model, int sflags = 0) const;
1571
1589 const lfLens **FindLenses (const lfLens *lens, int sflags = 0) const;
1590
1598 const lfLens *const *GetLenses () const;
1599
1607 const lfMount *FindMount (const char *mount) const;
1608
1616 const char *MountName (const char *mount) const;
1617
1625 const lfMount *const *GetMounts () const;
1626
1632 void AddMount (lfMount *mount);
1633
1639 void AddCamera (lfCamera *camera);
1640
1646 void AddLens (lfLens *lens);
1647
1648private:
1649#endif
1650 void *Mounts;
1651 void *Cameras;
1652 void *Lenses;
1653};
1654
1655C_TYPEDEF (struct, lfDatabase)
1656
1657
1668
1679
1682
1684LF_EXPORT lfError lf_db_load_file (lfDatabase *db, const char *filename);
1685
1687LF_EXPORT lfError lf_db_load_data (lfDatabase *db, const char *errcontext,
1688 const char *data, size_t data_size);
1689
1691LF_EXPORT lfError lf_db_save_all (const lfDatabase *db, const char *filename);
1692
1694LF_EXPORT lfError lf_db_save_file (const lfDatabase *db, const char *filename,
1695 const lfMount *const *mounts,
1696 const lfCamera *const *cameras,
1697 const lfLens *const *lenses);
1698
1700LF_EXPORT char *lf_db_save (const lfMount *const *mounts,
1701 const lfCamera *const *cameras,
1702 const lfLens *const *lenses);
1703
1706 const lfDatabase *db, const char *maker, const char *model);
1707
1710 const lfDatabase *db, const char *maker, const char *model, int sflags);
1711
1714
1717 const lfDatabase *db, const lfCamera *camera, const char *maker,
1718 const char *lens, int sflags);
1719
1722 const lfDatabase *db, const lfLens *lens, int sflags);
1723
1726
1728LF_EXPORT const lfMount *lf_db_find_mount (const lfDatabase *db, const char *mount);
1729
1731LF_EXPORT const char *lf_db_mount_name (const lfDatabase *db, const char *mount);
1732
1735
1738/*----------------------------------------------------------------------------*/
1739
1748enum
1749{
1751 LF_MODIFY_TCA = 0x00000001,
1754 /* Value 0x00000004 is deprecated. */
1760 LF_MODIFY_SCALE = 0x00000020,
1762 LF_MODIFY_ALL = ~0
1764
1767{
1777 LF_PF_F64
1779
1781
1782
1786{
1810
1812
1813
1814#define LF_CR_1(a) (LF_CR_ ## a)
1816#define LF_CR_2(a,b) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4))
1818#define LF_CR_3(a,b,c) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1819 ((LF_CR_ ## c) << 8))
1821#define LF_CR_4(a,b,c,d) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1822 ((LF_CR_ ## c) << 8) | ((LF_CR_ ## d) << 12))
1824#define LF_CR_5(a,b,c,d,e) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1825 ((LF_CR_ ## c) << 8) | ((LF_CR_ ## d) << 12) | \
1826 ((LF_CR_ ## e) << 16))
1828#define LF_CR_6(a,b,c,d,e,f) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1829 ((LF_CR_ ## c) << 8) | ((LF_CR_ ## d) << 12) | \
1830 ((LF_CR_ ## e) << 16) | ((LF_CR_ ## f) << 20))
1832#define LF_CR_7(a,b,c,d,e,f,g) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1833 ((LF_CR_ ## c) << 8) | ((LF_CR_ ## d) << 12) | \
1834 ((LF_CR_ ## e) << 16) | ((LF_CR_ ## f) << 20) | \
1835 ((LF_CR_ ## g) << 24))
1837#define LF_CR_8(a,b,c,d,e,f,g,h) ((LF_CR_ ## a) | ((LF_CR_ ## b) << 4) | \
1838 ((LF_CR_ ## c) << 8) | ((LF_CR_ ## d) << 12) | \
1839 ((LF_CR_ ## e) << 16) | ((LF_CR_ ## f) << 20) | \
1840 ((LF_CR_ ## g) << 24) | ((LF_CR_ ## h) << 28))
1841
1857typedef void (*lfSubpixelCoordFunc) (void *data, float *iocoord, int count);
1858
1883typedef void (*lfModifyColorFunc) (void *data, float x, float y,
1884 void *pixels, int comp_role, int count);
1885
1898typedef void (*lfModifyCoordFunc) (void *data, float *iocoord, int count);
1899
1900// @cond
1901
1903struct lfCallbackData
1904{
1905 int priority;
1906 void *data;
1907 size_t data_size;
1908};
1909
1910// A test point in the autoscale algorithm
1911typedef struct { float angle, dist; } lfPoint;
1912
1913// @endcond
1914
1994#ifdef __cplusplus
1995}
1996#endif
1997
1999{
2000#ifdef __cplusplus
2022 lfModifier (const lfLens *lens, float crop, int width, int height);
2023 ~lfModifier ();
2024
2048 static lfModifier *Create (const lfLens *lens, float crop, int width, int height);
2049
2096 const lfLens *lens, lfPixelFormat format, float focal, float aperture,
2097 float distance, float scale, lfLensType targeom, int flags, bool reverse);
2098
2104 void Destroy ();
2105
2122 void AddCoordCallback (lfModifyCoordFunc callback, int priority,
2123 void *data, size_t data_size);
2124
2142 void AddSubpixelCallback (lfSubpixelCoordFunc callback, int priority,
2143 void *data, size_t data_size);
2144
2161 void AddColorCallback (lfModifyColorFunc callback, int priority,
2162 void *data, size_t data_size);
2163
2178 bool AddSubpixelCallbackTCA (lfLensCalibTCA &model, bool reverse = false);
2179
2195 bool reverse = false);
2196
2210 bool AddCoordCallbackDistortion (lfLensCalibDistortion &model, bool reverse = false);
2211
2226 bool AddCoordCallbackGeometry (lfLensType from, lfLensType to, float focal);
2227
2244 bool AddCoordCallbackScale (float scale, bool reverse = false);
2245
2259 float GetAutoScale (bool reverse);
2260
2290 bool ApplyColorModification (void *pixels, float x, float y, int width, int height,
2291 int comp_role, int row_stride) const;
2292
2323 bool ApplyGeometryDistortion (float xu, float yu, int width, int height,
2324 float *res) const;
2325
2357 bool ApplySubpixelDistortion (float xu, float yu, int width, int height,
2358 float *res) const;
2359
2390 bool ApplySubpixelGeometryDistortion (float xu, float yu, int width, int height,
2391 float *res) const;
2392
2393private:
2424 float GetRealFocalLength (const lfLens *lens, float focal);
2425
2426 void AddCallback (void *arr, lfCallbackData *d,
2427 int priority, void *data, size_t data_size);
2428
2442 double AutoscaleResidualDistance (float *coord) const;
2457 float GetTransformedDistance (lfPoint point) const;
2458
2459 static void ModifyCoord_UnTCA_Linear (void *data, float *iocoord, int count);
2460 static void ModifyCoord_TCA_Linear (void *data, float *iocoord, int count);
2461 static void ModifyCoord_UnTCA_Poly3 (void *data, float *iocoord, int count);
2462 static void ModifyCoord_TCA_Poly3 (void *data, float *iocoord, int count);
2463
2464 static void ModifyCoord_UnDist_Poly3 (void *data, float *iocoord, int count);
2465 static void ModifyCoord_Dist_Poly3 (void *data, float *iocoord, int count);
2466#ifdef VECTORIZATION_SSE
2467 static void ModifyCoord_Dist_Poly3_SSE (void *data, float *iocoord, int count);
2468#endif
2469 static void ModifyCoord_UnDist_Poly5 (void *data, float *iocoord, int count);
2470 static void ModifyCoord_Dist_Poly5 (void *data, float *iocoord, int count);
2471 static void ModifyCoord_UnDist_PTLens (void *data, float *iocoord, int count);
2472 static void ModifyCoord_Dist_PTLens (void *data, float *iocoord, int count);
2473#ifdef VECTORIZATION_SSE
2474 static void ModifyCoord_UnDist_PTLens_SSE (void *data, float *iocoord, int count);
2475 static void ModifyCoord_Dist_PTLens_SSE (void *data, float *iocoord, int count);
2476#endif
2477 static void ModifyCoord_Geom_FishEye_Rect (void *data, float *iocoord, int count);
2478 static void ModifyCoord_Geom_Panoramic_Rect (void *data, float *iocoord, int count);
2479 static void ModifyCoord_Geom_ERect_Rect (void *data, float *iocoord, int count);
2480 static void ModifyCoord_Geom_Rect_FishEye (void *data, float *iocoord, int count);
2481 static void ModifyCoord_Geom_Panoramic_FishEye (void *data, float *iocoord, int count);
2482 static void ModifyCoord_Geom_ERect_FishEye (void *data, float *iocoord, int count);
2483 static void ModifyCoord_Geom_Rect_Panoramic (void *data, float *iocoord, int count);
2484 static void ModifyCoord_Geom_FishEye_Panoramic (void *data, float *iocoord, int count);
2485 static void ModifyCoord_Geom_ERect_Panoramic (void *data, float *iocoord, int count);
2486 static void ModifyCoord_Geom_Rect_ERect (void *data, float *iocoord, int count);
2487 static void ModifyCoord_Geom_FishEye_ERect (void *data, float *iocoord, int count);
2488 static void ModifyCoord_Geom_Panoramic_ERect (void *data, float *iocoord, int count);
2489 static void ModifyCoord_Geom_Orthographic_ERect (void *data, float *iocoord, int count);
2490 static void ModifyCoord_Geom_ERect_Orthographic (void *data, float *iocoord, int count);
2491 static void ModifyCoord_Geom_Stereographic_ERect (void *data, float *iocoord, int count);
2492 static void ModifyCoord_Geom_ERect_Stereographic (void *data, float *iocoord, int count);
2493 static void ModifyCoord_Geom_Equisolid_ERect (void *data, float *iocoord, int count);
2494 static void ModifyCoord_Geom_ERect_Equisolid (void *data, float *iocoord, int count);
2495 static void ModifyCoord_Geom_Thoby_ERect (void *data, float *iocoord, int count);
2496 static void ModifyCoord_Geom_ERect_Thoby (void *data, float *iocoord, int count);
2497#ifdef VECTORIZATION_SSE
2498 static void ModifyColor_DeVignetting_PA_SSE (
2499 void *data, float _x, float _y, lf_f32 *pixels, int comp_role, int count);
2500#endif
2501#ifdef VECTORIZATION_SSE2
2502 static void ModifyColor_DeVignetting_PA_SSE2 (
2503 void *data, float _x, float _y, lf_u16 *pixels, int comp_role, int count);
2504#endif
2505
2506 template<typename T> static void ModifyColor_Vignetting_PA (
2507 void *data, float x, float y, T *rgb, int comp_role, int count);
2508 template<typename T> static void ModifyColor_DeVignetting_PA (
2509 void *data, float x, float y, T *rgb, int comp_role, int count);
2510
2511 static void ModifyCoord_Scale (void *data, float *iocoord, int count);
2512#endif
2514 int Width, Height;
2516 double CenterX, CenterY;
2518 double NormScale, NormUnScale;
2521 double NormalizedInMillimeters;
2524 double AspectRatioCorrection;
2525
2527 void *SubpixelCallbacks;
2529 void *ColorCallbacks;
2531 void *CoordCallbacks;
2532
2534 double MaxX, MaxY;
2535};
2536
2537#ifdef __cplusplus
2538extern "C" {
2539#endif
2540
2541C_TYPEDEF (struct, lfModifier)
2542
2543
2545 const lfLens *lens, float crop, int width, int height);
2546
2549
2552 lfModifier *modifier, const lfLens *lens, lfPixelFormat format,
2553 float focal, float aperture, float distance, float scale,
2554 lfLensType targeom, int flags, cbool reverse);
2555
2558 lfModifier *modifier, lfModifyCoordFunc callback, int priority,
2559 void *data, size_t data_size);
2560
2563 lfModifier *modifier, lfSubpixelCoordFunc callback, int priority,
2564 void *data, size_t data_size);
2565
2568 lfModifier *modifier, lfModifyColorFunc callback, int priority,
2569 void *data, size_t data_size);
2570
2573 lfModifier *modifier, lfLensCalibTCA *model, cbool reverse);
2574
2577 lfModifier *modifier, lfLensCalibVignetting *model,
2578 lfPixelFormat format, cbool reverse);
2579
2582 lfModifier *modifier, lfLensCalibDistortion *model, cbool reverse);
2583
2586 lfModifier *modifier, lfLensType from, lfLensType to, float focal);
2587
2590 lfModifier *modifier, float scale, cbool reverse);
2591
2594 lfModifier *modifier, cbool reverse);
2595
2598 lfModifier *modifier, float xu, float yu, int width, int height, float *res);
2599
2602 lfModifier *modifier, void *pixels, float x, float y, int width, int height,
2603 int comp_role, int row_stride);
2604
2607 lfModifier *modifier, float xu, float yu, int width, int height, float *res);
2608
2611 lfModifier *modifier, float xu, float yu, int width, int height, float *res);
2612
2615#undef cbool
2616
2617#ifdef __cplusplus
2618}
2619#endif
2620
2621#endif /* __LENSFUN_H__ */
lfMLstr lf_mlstr_dup(const lfMLstr str)
Create a complete copy of a multi-language string.
unsigned char lf_u8
Definition: lensfun.h:124
char * lfMLstr
Definition: lensfun.h:108
void lf_free(void *data)
const char * lf_mlstr_get(const lfMLstr str)
Get a string corresponding to current locale from a multi-language string.
unsigned short lf_u16
Definition: lensfun.h:126
#define LF_EXPORT
This macro expands to an appropiate symbol visibility declaration.
Definition: lensfun.h:64
double lf_f64
Definition: lensfun.h:132
#define DEPRECATED
For marking deprecated functions, see http://stackoverflow.com/a/21265197.
Definition: lensfun.h:91
unsigned int lf_u32
Definition: lensfun.h:128
float lf_f32
Definition: lensfun.h:130
#define cbool
C-compatible bool type; don't bother to define Yet Another Boolean Type.
Definition: lensfun.h:98
lfMLstr lf_mlstr_add(lfMLstr str, const char *lang, const char *trstr)
Add a new translated string to a multi-language string.
lfError
Definition: lensfun.h:112
@ LF_NO_ERROR
Definition: lensfun.h:114
@ LF_NO_DATABASE
Definition: lensfun.h:118
@ LF_WRONG_FORMAT
Definition: lensfun.h:116
void lf_camera_copy(lfCamera *dest, const lfCamera *source)
Copy the data from one lfCamera structure into another.
cbool lf_camera_check(lfCamera *camera)
lfCamera * lf_camera_new()
Create a new camera object.
void lf_camera_destroy(lfCamera *camera)
Destroy a lfCamera object.
void(* lfSubpixelCoordFunc)(void *data, float *iocoord, int count)
A callback function which modifies the separate coordinates for all color components for every pixel ...
Definition: lensfun.h:1857
cbool lf_modifier_apply_subpixel_distortion(lfModifier *modifier, float xu, float yu, int width, int height, float *res)
void lf_modifier_add_coord_callback(lfModifier *modifier, lfModifyCoordFunc callback, int priority, void *data, size_t data_size)
void lf_modifier_destroy(lfModifier *modifier)
cbool lf_modifier_add_coord_callback_scale(lfModifier *modifier, float scale, cbool reverse)
cbool lf_modifier_apply_color_modification(lfModifier *modifier, void *pixels, float x, float y, int width, int height, int comp_role, int row_stride)
void lf_modifier_add_subpixel_callback(lfModifier *modifier, lfSubpixelCoordFunc callback, int priority, void *data, size_t data_size)
cbool lf_modifier_add_color_callback_vignetting(lfModifier *modifier, lfLensCalibVignetting *model, lfPixelFormat format, cbool reverse)
float lf_modifier_get_auto_scale(lfModifier *modifier, cbool reverse)
void(* lfModifyCoordFunc)(void *data, float *iocoord, int count)
A callback function which modifies the coordinates of a strip of pixels.
Definition: lensfun.h:1898
cbool lf_modifier_apply_geometry_distortion(lfModifier *modifier, float xu, float yu, int width, int height, float *res)
void lf_modifier_add_color_callback(lfModifier *modifier, lfModifyColorFunc callback, int priority, void *data, size_t data_size)
cbool lf_modifier_apply_subpixel_geometry_distortion(lfModifier *modifier, float xu, float yu, int width, int height, float *res)
cbool lf_modifier_add_coord_callback_distortion(lfModifier *modifier, lfLensCalibDistortion *model, cbool reverse)
lfModifier * lf_modifier_new(const lfLens *lens, float crop, int width, int height)
int lf_modifier_initialize(lfModifier *modifier, const lfLens *lens, lfPixelFormat format, float focal, float aperture, float distance, float scale, lfLensType targeom, int flags, cbool reverse)
cbool lf_modifier_add_subpixel_callback_TCA(lfModifier *modifier, lfLensCalibTCA *model, cbool reverse)
void(* lfModifyColorFunc)(void *data, float x, float y, void *pixels, int comp_role, int count)
A callback function which modifies the colors of a strip of pixels.
Definition: lensfun.h:1883
cbool lf_modifier_add_coord_callback_geometry(lfModifier *modifier, lfLensType from, lfLensType to, float focal)
lfComponentRole
These constants define the role of every pixel component, four bits each. "pixel" refers here to a se...
Definition: lensfun.h:1786
lfPixelFormat
A list of pixel formats supported by internal colour callbacks.
Definition: lensfun.h:1767
@ LF_MODIFY_TCA
Definition: lensfun.h:1751
@ LF_MODIFY_VIGNETTING
Definition: lensfun.h:1753
@ LF_MODIFY_GEOMETRY
Definition: lensfun.h:1758
@ LF_MODIFY_DISTORTION
Definition: lensfun.h:1756
@ LF_MODIFY_SCALE
Definition: lensfun.h:1760
@ LF_MODIFY_ALL
Definition: lensfun.h:1762
@ LF_CR_NEXT
Definition: lensfun.h:1798
@ LF_CR_END
Definition: lensfun.h:1791
@ LF_CR_INTENSITY
Definition: lensfun.h:1802
@ LF_CR_RED
Definition: lensfun.h:1804
@ LF_CR_UNKNOWN
Definition: lensfun.h:1800
@ LF_CR_GREEN
Definition: lensfun.h:1806
@ LF_CR_BLUE
Definition: lensfun.h:1808
@ LF_PF_U16
Definition: lensfun.h:1771
@ LF_PF_F64
Definition: lensfun.h:1777
@ LF_PF_U8
Definition: lensfun.h:1769
@ LF_PF_U32
Definition: lensfun.h:1773
@ LF_PF_F32
Definition: lensfun.h:1775
const lfCamera ** lf_db_find_cameras_ext(const lfDatabase *db, const char *maker, const char *model, int sflags)
char * lf_db_save(const lfMount *const *mounts, const lfCamera *const *cameras, const lfLens *const *lenses)
const char * lf_db_mount_name(const lfDatabase *db, const char *mount)
const lfMount * lf_db_find_mount(const lfDatabase *db, const char *mount)
lfError lf_db_load_data(lfDatabase *db, const char *errcontext, const char *data, size_t data_size)
lfError lf_db_load(lfDatabase *db)
const lfLens ** lf_db_find_lenses(const lfDatabase *db, const lfLens *lens, int sflags)
const lfLens ** lf_db_find_lenses_hd(const lfDatabase *db, const lfCamera *camera, const char *maker, const char *lens, int sflags)
lfError lf_db_save_all(const lfDatabase *db, const char *filename)
const lfMount *const * lf_db_get_mounts(const lfDatabase *db)
const lfCamera *const * lf_db_get_cameras(const lfDatabase *db)
lfError lf_db_save_file(const lfDatabase *db, const char *filename, 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)
lfDatabase * lf_db_new(void)
Create a new empty database object.
const lfLens *const * lf_db_get_lenses(const lfDatabase *db)
lfError lf_db_load_file(lfDatabase *db, const char *filename)
void lf_db_destroy(lfDatabase *db)
Destroy the database object.
@ LF_SEARCH_LOOSE
This flag selects a looser search algorithm resulting in more results (still sorted by score).
Definition: lensfun.h:1321
@ LF_SEARCH_SORT_AND_UNIQUIFY
This flag makes Lensfun to sort the results by focal length, and remove all double lens names.
Definition: lensfun.h:1333
cbool lf_lens_interpolate_vignetting(const lfLens *lens, float focal, float aperture, float distance, lfLensCalibVignetting *res)
void lf_lens_add_calib_crop(lfLens *lens, const lfLensCalibCrop *cc)
lfTCAModel
The Lensfun library supports several models for lens lateral chromatic aberrations (also called trans...
Definition: lensfun.h:526
cbool lf_lens_remove_calib_real_focal(lfLens *lens, int idx)
void lf_lens_add_calib_vignetting(lfLens *lens, const lfLensCalibVignetting *vc)
cbool lf_lens_check(lfLens *lens)
DEPRECATED cbool lf_lens_remove_calib_fov(lfLens *lens, int idx)
cbool lf_lens_remove_calib_crop(lfLens *lens, int idx)
cbool lf_lens_interpolate_crop(const lfLens *lens, float focal, lfLensCalibCrop *res)
DEPRECATED void lf_lens_add_calib_fov(lfLens *lens, const lfLensCalibFov *cf)
void lf_lens_add_calib_distortion(lfLens *lens, const lfLensCalibDistortion *dc)
void lf_lens_destroy(lfLens *lens)
Destroy a lfLens object.
cbool lf_lens_remove_calib_vignetting(lfLens *lens, int idx)
const char * lf_get_distortion_model_desc(enum lfDistortionModel model, const char **details, const lfParameter ***params)
lfVignettingModel
The Lensfun library supports several models for lens vignetting correction.
Definition: lensfun.h:594
cbool lf_lens_remove_calib_tca(lfLens *lens, int idx)
void lf_lens_guess_parameters(lfLens *lens)
cbool lf_lens_interpolate_distortion(const lfLens *lens, float focal, lfLensCalibDistortion *res)
cbool lf_lens_interpolate_tca(const lfLens *lens, float focal, lfLensCalibTCA *res)
lfCropMode
Different crop modes.
Definition: lensfun.h:638
DEPRECATED cbool lf_lens_interpolate_fov(const lfLens *lens, float focal, lfLensCalibFov *res)
lfLens * lf_lens_new()
Create a new lens object.
lfDistortionModel
The Lensfun library implements several lens distortion models. This enum lists them.
Definition: lensfun.h:462
const char * lf_get_crop_desc(enum lfCropMode mode, const char **details, const lfParameter ***params)
void lf_lens_copy(lfLens *dest, const lfLens *source)
Copy the data from one lfLens structure into another.
lfLensType
Lens type. See Change of projection for further information.
Definition: lensfun.h:741
cbool lf_lens_interpolate_real_focal(const lfLens *lens, float focal, lfLensCalibRealFocal *res)
const char * lf_get_vignetting_model_desc(enum lfVignettingModel model, const char **details, const lfParameter ***params)
void lf_lens_add_calib_tca(lfLens *lens, const lfLensCalibTCA *tcac)
const char * lf_get_lens_type_desc(enum lfLensType type, const char **details)
const char * lf_get_tca_model_desc(enum lfTCAModel model, const char **details, const lfParameter ***params)
void lf_lens_add_calib_real_focal(lfLens *lens, const lfLensCalibRealFocal *cf)
cbool lf_lens_remove_calib_distortion(lfLens *lens, int idx)
@ LF_TCA_MODEL_NONE
No TCA correction data is known.
Definition: lensfun.h:528
@ LF_TCA_MODEL_LINEAR
Linear lateral chromatic aberrations model.
Definition: lensfun.h:540
@ LF_TCA_MODEL_POLY3
Third order polynomial.
Definition: lensfun.h:553
@ LF_VIGNETTING_MODEL_PA
Pablo D'Angelo vignetting model (which is a more general variant of the law).
Definition: lensfun.h:606
@ LF_VIGNETTING_MODEL_NONE
No vignetting correction data is known.
Definition: lensfun.h:596
@ LF_CROP_RECTANGLE
use a rectangular crop
Definition: lensfun.h:642
@ LF_CROP_CIRCLE
use a circular crop, e.g. for circular fisheye images
Definition: lensfun.h:644
@ LF_NO_CROP
no crop at all
Definition: lensfun.h:640
@ LF_DIST_MODEL_POLY5
5th order polynomial model.
Definition: lensfun.h:481
@ LF_DIST_MODEL_NONE
Distortion parameters are unknown.
Definition: lensfun.h:464
@ LF_DIST_MODEL_PTLENS
PTLens model, which is also used by Hugin.
Definition: lensfun.h:489
@ LF_DIST_MODEL_POLY3
3rd order polynomial model, which is a subset of the PTLens model.
Definition: lensfun.h:472
@ LF_FISHEYE
Equidistant fisheye.
Definition: lensfun.h:754
@ LF_FISHEYE_EQUISOLID
Equisolid fisheye.
Definition: lensfun.h:774
@ LF_FISHEYE_THOBY
Fisheye as measured by Thoby (for Nikkor 10.5).
Definition: lensfun.h:780
@ LF_UNKNOWN
Unknown lens type.
Definition: lensfun.h:743
@ LF_FISHEYE_ORTHOGRAPHIC
Orthographic fisheye.
Definition: lensfun.h:770
@ LF_EQUIRECTANGULAR
Equirectangular.
Definition: lensfun.h:768
@ LF_RECTILINEAR
Rectilinear lens.
Definition: lensfun.h:748
@ LF_FISHEYE_STEREOGRAPHIC
Stereographic fisheye.
Definition: lensfun.h:772
@ LF_PANORAMIC
Panoramic (cylindrical)
Definition: lensfun.h:761
lfMount * lf_mount_new()
Create a new mount object.
void lf_mount_destroy(lfMount *mount)
Destroy a lfMount object.
void lf_mount_copy(lfMount *dest, const lfMount *source)
Copy the data from one lfMount structure into another.
cbool lf_mount_check(lfMount *mount)
#define C_TYPEDEF(t, c)
Definition: lensfun.h:30
Camera data. Unknown fields are set to NULL.
Definition: lensfun.h:314
lfMLstr Model
Model name (ex: "Rolleiflex SL35") – same as in EXIF.
Definition: lensfun.h:318
lfMLstr Variant
Camera variant. Some cameras use same EXIF id for different models.
Definition: lensfun.h:320
~lfCamera()
Destroy a camera object. All allocated fields are freed.
int Score
Camera matching score, used while searching: not actually a camera parameter.
Definition: lensfun.h:326
bool Check()
Check if a camera object is valid.
lfMLstr Maker
Camera maker (ex: "Rollei") – same as in EXIF.
Definition: lensfun.h:316
void SetVariant(const char *val, const char *lang=NULL)
Add a string to camera variant.
lfCamera(const lfCamera &other)
lfCamera()
Initialize a new camera object. All fields are set to 0.
void SetMaker(const char *val, const char *lang=NULL)
Add a string to camera maker.
char * Mount
Camera mount type (ex: "QBM")
Definition: lensfun.h:322
void SetMount(const char *val)
Set the value for camera Mount.
void SetModel(const char *val, const char *lang=NULL)
Add a string to camera model.
float CropFactor
Camera crop factor (ex: 1.0). Must be defined.
Definition: lensfun.h:324
A lens database object.
Definition: lensfun.h:1359
const lfLens *const * GetLenses() const
Retrieve a full list of lenses.
lfError Save(const char *filename) const
Save the whole database to a file.
void Destroy()
Destroy the database object and free all loaded data.
void AddMount(lfMount *mount)
Add a mount to the database.
bool LoadDirectory(const char *dirname)
Load all XML files from a directory.
const lfCamera ** FindCamerasExt(const char *maker, const char *model, int sflags=0) const
Searches all translations of camera maker and model.
const lfLens ** FindLenses(const lfCamera *camera, const char *maker, const char *model, int sflags=0) const
Parse a human-friendly lens description (ex: "smc PENTAX-F 35-105mm F4-5.6" or "SIGMA AF 28-300 F3....
char * HomeDataDir
Home lens database directory (something like "~/.local/share/lensfun")
Definition: lensfun.h:1361
const lfLens ** FindLenses(const lfLens *lens, int sflags=0) const
Find a set of lenses that fit certain criteria.
const lfMount *const * GetMounts() const
Retrieve a full list of mounts.
lfError Load(const char *filename)
Load just a specific XML file.
char * UserUpdatesDir
Home lens database directory for automatic updates (something like "~/.local/share/lensfun/updates")
Definition: lensfun.h:1364
static char * Save(const lfMount *const *mounts, const lfCamera *const *cameras, const lfLens *const *lenses)
Save a set of camera and lens descriptions into a memory array.
void AddCamera(lfCamera *camera)
Add a camera to the database.
const lfMount * FindMount(const char *mount) const
Return the lfMount structure given the (basic) mount name.
lfError Save(const char *filename, const lfMount *const *mounts, const lfCamera *const *cameras, const lfLens *const *lenses) const
Save a set of camera and lens descriptions to a file.
static lfDatabase * Create()
Create a new empty database object.
lfError Load(const char *errcontext, const char *data, size_t data_size)
Load a set of camera/lenses from a memory array.
void AddLens(lfLens *lens)
Add a lens to the database.
lfError Load()
Find and load the lens database.
const char * MountName(const char *mount) const
Get the name of a mount in current locale.
const lfCamera ** FindCameras(const char *maker, const char *model) const
Find a set of cameras that fit given criteria.
const lfCamera *const * GetCameras() const
Retrieve a full list of cameras.
Struct to save image crop, which can depend on the focal length.
Definition: lensfun.h:653
enum lfCropMode CropMode
crop mode which should be applied to image to get rid of black borders
Definition: lensfun.h:657
float Focal
Focal length in mm at which this calibration data was taken.
Definition: lensfun.h:655
Lens distortion calibration data.
Definition: lensfun.h:501
enum lfDistortionModel Model
The type of distortion model used.
Definition: lensfun.h:503
float Focal
Focal length in mm at which this calibration data was taken.
Definition: lensfun.h:505
Struct to save calibrated field of view, which can depends on the focal length (DEPRECATED)
Definition: lensfun.h:679
float FieldOfView
Field of view for given images.
Definition: lensfun.h:691
float Focal
Definition: lensfun.h:681
Struct to save real focal length, which can depends on the (nominal) focal length.
Definition: lensfun.h:701
float RealFocal
Real focal length.
Definition: lensfun.h:715
float Focal
Definition: lensfun.h:703
Laterlal chromatic aberrations calibration data.
Definition: lensfun.h:566
float Focal
Focal length in mm at which this calibration data was taken.
Definition: lensfun.h:570
enum lfTCAModel Model
The lateral chromatic aberration model used.
Definition: lensfun.h:568
Lens vignetting calibration data.
Definition: lensfun.h:619
float Distance
Focus distance in meters.
Definition: lensfun.h:627
float Aperture
Aperture (f-number) at which this calibration data was taken.
Definition: lensfun.h:625
enum lfVignettingModel Model
The lens vignetting model used.
Definition: lensfun.h:621
float Focal
Focal length in mm at which this calibration data was taken.
Definition: lensfun.h:623
Lens data. Unknown fields are set to NULL or 0.
Definition: lensfun.h:796
char ** Mounts
Definition: lensfun.h:810
bool RemoveCalibCrop(int idx)
Remove a lens crop entry from the lens crop structure.
lfLensCalibTCA ** CalibTCA
Definition: lensfun.h:832
lfMLstr Model
Definition: lensfun.h:800
static const char * GetLensTypeDesc(lfLensType type, const char **details)
Get the human-readable lens type name and a short description of this lens type.
DEPRECATED bool RemoveCalibFov(int idx)
Remove a field of view entry from the lens fov structure.
void GuessParameters()
This method fills some fields if they are missing but can be derived from other fields.
bool Check()
Check if a lens object is valid.
lfLensCalibFov ** CalibFov
Definition: lensfun.h:838
bool InterpolateRealFocal(float focal, lfLensCalibRealFocal &res) const
Interpolate lens real focal length data for given focal length.
void AddMount(const char *val)
Add a new mount type to this lens.
int Score
Definition: lensfun.h:842
lfMLstr Maker
Definition: lensfun.h:798
bool InterpolateDistortion(float focal, lfLensCalibDistortion &res) const
Interpolate lens geometry distortion data for given focal length.
float CropFactor
Definition: lensfun.h:824
static const char * GetDistortionModelDesc(lfDistortionModel model, const char **details, const lfParameter ***params)
Get the human-readable distortion model name and the descriptions of the parameters required by this ...
float CenterY
Definition: lensfun.h:822
lfLens(const lfLens &other)
lfLensCalibRealFocal ** CalibRealFocal
Definition: lensfun.h:840
bool InterpolateVignetting(float focal, float aperture, float distance, lfLensCalibVignetting &res) const
Interpolate lens vignetting model parameters for given focal length, aperture, and focus distance.
void AddCalibDistortion(const lfLensCalibDistortion *dc)
Add a new distortion calibration structure to the pool.
bool RemoveCalibVignetting(int idx)
Remove a calibration entry from the vignetting calibration data.
static const char * GetCropDesc(lfCropMode mode, const char **details, const lfParameter ***params)
Get the human-readable crop name and the descriptions of the parameters required by this model.
DEPRECATED void AddCalibFov(const lfLensCalibFov *cf)
Add a new lens fov structure to the pool.
void SetModel(const char *val, const char *lang=NULL)
Add a string to camera model.
void SetMaker(const char *val, const char *lang=NULL)
Add a string to camera maker.
void AddCalibVignetting(const lfLensCalibVignetting *vc)
Add a new vignetting calibration structure to the pool.
float MinFocal
Definition: lensfun.h:802
bool InterpolateCrop(float focal, lfLensCalibCrop &res) const
Interpolate lens crop data for given focal length.
lfLens()
Create a new lens object, initializing all fields to default values.
float MaxFocal
Definition: lensfun.h:804
lfLensCalibCrop ** CalibCrop
Definition: lensfun.h:836
float MinAperture
Definition: lensfun.h:806
void AddCalibCrop(const lfLensCalibCrop *cc)
Add a new lens crop structure to the pool.
lfLensCalibDistortion ** CalibDistortion
Definition: lensfun.h:830
static const char * GetTCAModelDesc(lfTCAModel model, const char **details, const lfParameter ***params)
Get the human-readable transversal chromatic aberrations model name and the descriptions of the param...
float AspectRatio
Definition: lensfun.h:826
void AddCalibTCA(const lfLensCalibTCA *tcac)
Add a new transversal chromatic aberration calibration structure to the pool.
bool InterpolateTCA(float focal, lfLensCalibTCA &res) const
Interpolate lens TCA calibration data for given focal length.
float MaxAperture
Definition: lensfun.h:808
float CenterX
Definition: lensfun.h:820
lfLensCalibVignetting ** CalibVignetting
Definition: lensfun.h:834
bool RemoveCalibTCA(int idx)
Remove a calibration entry from the TCA calibration data.
~lfLens()
Destroy this and all associated objects.
DEPRECATED bool InterpolateFov(float focal, lfLensCalibFov &res) const
Interpolate lens fov data for given focal length.
static const char * GetVignettingModelDesc(lfVignettingModel model, const char **details, const lfParameter ***params)
Get the human-readable vignetting model name and the descriptions of the parameters required by this ...
lfLensType Type
Definition: lensfun.h:828
bool RemoveCalibRealFocal(int idx)
Remove a real focal length entry from the lens real focal length structure.
void AddCalibRealFocal(const lfLensCalibRealFocal *cf)
Add a new lens real focal length structure to the pool.
bool RemoveCalibDistortion(int idx)
Remove a calibration entry from the distortion calibration data.
A modifier object contains optimized data required to rectify a image.
Definition: lensfun.h:1999
void Destroy()
Destroy the modifier object.
int Initialize(const lfLens *lens, lfPixelFormat format, float focal, float aperture, float distance, float scale, lfLensType targeom, int flags, bool reverse)
Initialize the process of correcting aberrations in a image.
bool AddCoordCallbackScale(float scale, bool reverse=false)
Add the stock image scaling callback into the chain.
lfModifier(const lfLens *lens, float crop, int width, int height)
Create a empty image modifier object.
void AddColorCallback(lfModifyColorFunc callback, int priority, void *data, size_t data_size)
Add a user-defined callback to the color modification chain.
bool AddCoordCallbackGeometry(lfLensType from, lfLensType to, float focal)
Add the stock lens geometry rectification callback into the chain.
void AddSubpixelCallback(lfSubpixelCoordFunc callback, int priority, void *data, size_t data_size)
Add a user-defined callback to the subpixel coordinate rectification chain.
bool ApplySubpixelGeometryDistortion(float xu, float yu, int width, int height, float *res) const
Apply stage 2 & 3 in one step.
bool ApplyColorModification(void *pixels, float x, float y, int width, int height, int comp_role, int row_stride) const
Image correction step 1: fix image colors.
static lfModifier * Create(const lfLens *lens, float crop, int width, int height)
Create a empty image modifier object.
bool AddCoordCallbackDistortion(lfLensCalibDistortion &model, bool reverse=false)
Add the stock lens distortion correcting callback into the chain.
bool ApplyGeometryDistortion(float xu, float yu, int width, int height, float *res) const
Image correction step 2: apply the transforms on a block of pixel coordinates.
bool ApplySubpixelDistortion(float xu, float yu, int width, int height, float *res) const
Image correction step 3: apply subpixel distortions.
bool AddSubpixelCallbackTCA(lfLensCalibTCA &model, bool reverse=false)
Add the stock TCA correcting callback into the chain.
bool AddColorCallbackVignetting(lfLensCalibVignetting &model, lfPixelFormat format, bool reverse=false)
Add the stock lens vignetting correcting callback into the chain. The vignetting correction callback ...
void AddCoordCallback(lfModifyCoordFunc callback, int priority, void *data, size_t data_size)
Add a user-defined callback to the coordinate correction chain.
float GetAutoScale(bool reverse)
Compute the automatic scale factor for the image.
This structure contains everything specific to a camera mount.
Definition: lensfun.h:202
void AddCompat(const char *val)
Add a mount name to the list of compatible mounts.
bool Check()
Check if a mount object is valid.
lfMount()
Initialize a new mount object. All fields are set to 0.
lfMLstr Name
Camera mount name.
Definition: lensfun.h:208
void SetName(const char *val, const char *lang=NULL)
Add a string to mount name.
char ** Compat
Definition: lensfun.h:210
~lfMount()
Destroy a mount object. All allocated fields are freed.
This structure describes a single parameter for some lens model.
Definition: lensfun.h:724
const char * Name
Parameter name (something like 'k', 'k3', 'omega' etc.)
Definition: lensfun.h:726
float Max
Maximal value that has sense.
Definition: lensfun.h:730
float Min
Minimal value that has sense.
Definition: lensfun.h:728
float Default
Default value for the parameter.
Definition: lensfun.h:732