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1 /* mnote-canon-entry.c
2  *
3  * Copyright (c) 2002 Lutz Mueller <lutz@users.sourceforge.net>
4  * Copyright (c) 2003 Matthieu Castet <mat-c@users.sourceforge.net>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the
18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA  02110-1301  USA.
20  */
21 
22 #include "config.h"
23 #include "mnote-canon-entry.h"
24 
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <math.h>
29 
30 #include <libexif/exif-format.h>
31 #include <libexif/exif-utils.h>
32 #include <libexif/i18n.h>
33 
34 #define CF(format,target,v,maxlen)                              \
35 {                                                               \
36         if (format != target) {                                 \
37                 snprintf (v, maxlen,                            \
38                         _("Invalid format '%s', "               \
39                         "expected '%s'."),                      \
40                         exif_format_get_name (format),          \
41                         exif_format_get_name (target));         \
42                 break;                                          \
43         }                                                       \
44 }
45 
46 #define CC(number,target,v,maxlen)                                      \
47 {                                                                       \
48         if (number != target) {                                         \
49                 snprintf (v, maxlen,                                    \
50                         _("Invalid number of components (%i, "          \
51                         "expected %i)."), (int) number, (int) target);  \
52                 break;                                                  \
53         }                                                               \
54 }
55 #define CC2(number,t1,t2,v,maxlen)                                      \
56 {                                                                       \
57 	if ((number != t1) && (number != t2)) {                         \
58 		snprintf (v, maxlen,                                    \
59 			_("Invalid number of components (%i, "          \
60 			"expected %i or %i)."), (int) number,		\
61 			(int) t1, (int) t2);  				\
62 		break;                                                  \
63 	}                                                               \
64 }
65 
66 #define UNDEFINED 0xFF
67 
68 static const struct canon_entry_table_t {
69   unsigned int subtag;
70   ExifShort value;
71   const char *name;
72 } entries_settings_1 [] = {
73 #ifndef NO_VERBOSE_TAG_DATA
74   { 0,  1, N_("Macro")},
75   { 0,  2, N_("Normal")},
76   { 2,  1, N_("Economy")},
77   { 2,  2, N_("Normal")},
78   { 2,  3, N_("Fine")},
79   { 2,  4, N_("RAW")},
80   { 2,  5, N_("Superfine")},
81   { 3,  0, N_("Off")},
82   { 3,  1, N_("Auto")},
83   { 3,  2, N_("On")},
84   { 3,  3, N_("Red-eye reduction")},
85   { 3,  4, N_("Slow synchro")},
86   { 3,  5, N_("Auto, red-eye reduction")},
87   { 3,  6, N_("On, red-eye reduction")},
88   { 3, 16, N_("External flash")},
89   { 4,  0, N_("Single")},
90   { 4,  1, N_("Continuous")},
91   { 4,  2, N_("Movie")},
92   { 4,  3, N_("Continuous, speed priority")},
93   { 4,  4, N_("Continuous, low")},
94   { 4,  5, N_("Continuous, high")},
95   { 6,  0, N_("One-shot AF")},
96   { 6,  1, N_("AI servo AF")},
97   { 6,  2, N_("AI focus AF")},
98   { 6,  3, N_("Manual focus")},
99   { 6,  4, N_("Single")},
100   { 6,  5, N_("Continuous")},
101   { 6,  6, N_("Manual focus")},
102   { 6,  16, N_("Pan focus")},
103   { 8,  1, N_("JPEG")},
104   { 8,  2, N_("CRW+THM")},
105   { 8,  3, N_("AVI+THM")},
106   { 8,  4, N_("TIF")},
107   { 8,  5, N_("TIF+JPEG")},
108   { 8,  6, N_("CR2")},
109   { 8,  7, N_("CR2+JPEG")},
110   { 9,  0, N_("Large")},
111   { 9,  1, N_("Medium")},
112   { 9,  2, N_("Small")},
113   { 9,  5, N_("Medium 1")},
114   { 9,  6, N_("Medium 2")},
115   { 9,  7, N_("Medium 3")},
116   { 9,  8, N_("Postcard")},
117   { 9,  9, N_("Widescreen")},
118   {10,  0, N_("Full auto")},
119   {10,  1, N_("Manual")},
120   {10,  2, N_("Landscape")},
121   {10,  3, N_("Fast shutter")},
122   {10,  4, N_("Slow shutter")},
123   {10,  5, N_("Night")},
124   {10,  6, N_("Grayscale")},
125   {10,  7, N_("Sepia")},
126   {10,  8, N_("Portrait")},
127   {10,  9, N_("Sports")},
128   {10, 10, N_("Macro")},
129   {10, 11, N_("Black & white")},
130   {10, 12, N_("Pan focus")},
131   {10, 13, N_("Vivid")},
132   {10, 14, N_("Neutral")},
133   {10, 15, N_("Flash off")},
134   {10, 16, N_("Long shutter")},
135   {10, 17, N_("Super macro")},
136   {10, 18, N_("Foliage")},
137   {10, 19, N_("Indoor")},
138   {10, 20, N_("Fireworks")},
139   {10, 21, N_("Beach")},
140   {10, 22, N_("Underwater")},
141   {10, 23, N_("Snow")},
142   {10, 24, N_("Kids & pets")},
143   {10, 25, N_("Night snapshot")},
144   {10, 26, N_("Digital macro")},
145   {10, 27, N_("My colors")},
146   {10, 28, N_("Still image")},
147   {10, 30, N_("Color accent")},
148   {10, 31, N_("Color swap")},
149   {10, 32, N_("Aquarium")},
150   {10, 33, N_("ISO 3200")},
151   {11, 0, N_("None")},
152   {11, 1, N_("2x")},
153   {11, 2, N_("4x")},
154   {11, 3, N_("Other")},
155   {12, 0x0000, N_("Normal")},
156   {12, 0x0001, N_("High")},
157   {12, 0xffff, N_("Low")},
158   {13, 0x0000, N_("Normal")},
159   {13, 0x0001, N_("High")},
160   {13, 0xffff, N_("Low")},
161   {14, 0x0000, N_("Normal")},
162   {14, 0x0001, N_("High")},
163   {14, 0xffff, N_("Low")},
164   {15, 14, N_("Auto high")},
165   {15, 15, N_("Auto")},
166   {15, 16, N_("50")},
167   {15, 17, N_("100")},
168   {15, 18, N_("200")},
169   {15, 19, N_("400")},
170   {15, 20, N_("800")},
171   {16,  0, N_("Default")},
172   {16,  1, N_("Spot")},
173   {16,  2, N_("Average")},
174   {16,  3, N_("Evaluative")},
175   {16,  4, N_("Partial")},
176   {16,  5, N_("Center-weighted average")},
177   {17,  0, N_("Manual")},
178   {17,  1, N_("Auto")},
179   {17,  2, N_("Not known")},
180   {17,  3, N_("Macro")},
181   {17,  4, N_("Very close")},
182   {17,  5, N_("Close")},
183   {17,  6, N_("Middle range")},
184   {17,  7, N_("Far range")},
185   {17,  8, N_("Pan focus")},
186   {17,  9, N_("Super macro")},
187   {17,  10, N_("Infinity")},
188   {18, 0x2005, N_("Manual AF point selection")},
189   {18, 0x3000, N_("None (MF)")},
190   {18, 0x3001, N_("Auto-selected")},
191   {18, 0x3002, N_("Right")},
192   {18, 0x3003, N_("Center")},
193   {18, 0x3004, N_("Left")},
194   {18, 0x4001, N_("Auto AF point selection")},
195   {19,  0, N_("Easy shooting")},
196   {19,  1, N_("Program")},
197   {19,  2, N_("Tv-priority")},
198   {19,  3, N_("Av-priority")},
199   {19,  4, N_("Manual")},
200   {19,  5, N_("A-DEP")},
201   {19,  6, N_("M-DEP")},
202   {21,   1, N_("Canon EF 50mm f/1.8")},
203   {21,   2, N_("Canon EF 28mm f/2.8")},
204   {21,   4, N_("Sigma UC Zoom 35-135mm f/4-5.6")},
205   {21,   6, N_("Tokina AF193-2 19-35mm f/3.5-4.5")},
206   {21,   7, N_("Canon EF 100-300mm F5.6L")},
207   {21,  10, N_("Sigma 50mm f/2.8 EX or 28mm f/1.8")},
208   {21,  11, N_("Canon EF 35mm f/2")},
209   {21,  13, N_("Canon EF 15mm f/2.8")},
210   {21,  21, N_("Canon EF 80-200mm f/2.8L")},
211   {21,  22, N_("Tokina AT-X280AF PRO 28-80mm F2.8 Aspherical")},
212   {21,  26, N_("Cosina 100mm f/3.5 Macro AF")},
213   {21,  28, N_("Tamron AF Aspherical 28-200mm f/3.8-5.6")},
214   {21,  29, N_("Canon EF 50mm f/1.8 MkII")},
215   {21,  31, N_("Tamron SP AF 300mm f/2.8 LD IF")},
216   {21,  32, N_("Canon EF 24mm f/2.8 or Sigma 15mm f/2.8 EX Fisheye")},
217   {21,  37, N_("Canon EF 35-80mm f/4-5.6")},
218   {21,  39, N_("Canon EF 75-300mm f/4-5.6")},
219   {21,  40, N_("Canon EF 28-80mm f/3.5-5.6")},
220   {21,  43, N_("Canon EF 28-105mm f/4-5.6")},
221   {21,  45, N_("Canon EF-S 18-55mm f/3.5-5.6")},
222   {21,  52, N_("Canon EF-S 18-55mm f/3.5-5.6 IS II")},
223   {21, 124, N_("Canon MP-E 65mm f/2.8 1-5x Macro Photo")},
224   {21, 125, N_("Canon TS-E 24mm f/3.5L")},
225   {21, 126, N_("Canon TS-E 45mm f/2.8")},
226   {21, 127, N_("Canon TS-E 90mm f/2.8")},
227   {21, 130, N_("Canon EF 50mm f/1.0L")},
228   {21, 131, N_("Sigma 17-35mm f2.8-4 EX Aspherical HSM")},
229   {21, 134, N_("Canon EF 600mm f/4L IS")},
230   {21, 135, N_("Canon EF 200mm f/1.8L")},
231   {21, 136, N_("Canon EF 300mm f/2.8L")},
232   {21, 137, N_("Canon EF 85mm f/1.2L")},
233   {21, 139, N_("Canon EF 400mm f/2.8L")},
234   {21, 141, N_("Canon EF 500mm f/4.5L")},
235   {21, 142, N_("Canon EF 300mm f/2.8L IS")},
236   {21, 143, N_("Canon EF 500mm f/4L IS")},
237   {21, 149, N_("Canon EF 100mm f/2")},
238   {21, 150, N_("Sigma 20mm EX f/1.8")},
239   {21, 151, N_("Canon EF 200mm f/2.8L")},
240   {21, 152, N_("Sigma 10-20mm F4-5.6 or 12-24mm f/4.5-5.6 or 14mm f/2.8")},
241   {21, 153, N_("Canon EF 35-350mm f/3.5-5.6L")},
242   {21, 155, N_("Canon EF 85mm f/1.8 USM")},
243   {21, 156, N_("Canon EF 28-105mm f/3.5-4.5 USM")},
244   {21, 160, N_("Canon EF 20-35mm f/3.5-4.5 USM")},
245   {21, 161, N_("Canon EF 28-70mm f/2.8L or Sigma 24-70mm EX f/2.8")},
246   {21, 165, N_("Canon EF 70-200mm f/2.8 L")},
247   {21, 166, N_("Canon EF 70-200mm f/2.8 L + x1.4")},
248   {21, 167, N_("Canon EF 70-200mm f/2.8 L + x2")},
249   {21, 168, N_("Canon EF 28mm f/1.8 USM")},
250   {21, 169, N_("Sigma 15-30mm f/3.5-4.5 EX DG Aspherical")},
251   {21, 170, N_("Canon EF 200mm f/2.8L II")},
252   {21, 173, N_("Canon EF 180mm Macro f/3.5L or Sigma 180mm EX HSM Macro f/3.5")},
253   {21, 174, N_("Canon EF 135mm f/2L")},
254   {21, 176, N_("Canon EF 24-85mm f/3.5-4.5 USM")},
255   {21, 177, N_("Canon EF 300mm f/4L IS")},
256   {21, 178, N_("Canon EF 28-135mm f/3.5-5.6 IS")},
257   {21, 180, N_("Canon EF 35mm f/1.4L")},
258   {21, 181, N_("Canon EF 100-400mm f/4.5-5.6L IS + x1.4")},
259   {21, 182, N_("Canon EF 100-400mm f/4.5-5.6L IS + x2")},
260   {21, 183, N_("Canon EF 100-400mm f/4.5-5.6L IS")},
261   {21, 184, N_("Canon EF 400mm f/2.8L + x2")},
262   {21, 186, N_("Canon EF 70-200mm f/4L")},
263   {21, 190, N_("Canon EF 100mm f/2.8 Macro")},
264   {21, 191, N_("Canon EF 400mm f/4 DO IS")},
265   {21, 197, N_("Canon EF 75-300mm f/4-5.6 IS")},
266   {21, 198, N_("Canon EF 50mm f/1.4")},
267   {21, 202, N_("Canon EF 28-80 f/3.5-5.6 USM IV")},
268   {21, 211, N_("Canon EF 28-200mm f/3.5-5.6")},
269   {21, 213, N_("Canon EF 90-300mm f/4.5-5.6")},
270   {21, 214, N_("Canon EF-S 18-55mm f/3.5-4.5 USM")},
271   {21, 224, N_("Canon EF 70-200mm f/2.8L IS USM")},
272   {21, 225, N_("Canon EF 70-200mm f/2.8L IS USM + x1.4")},
273   {21, 226, N_("Canon EF 70-200mm f/2.8L IS USM + x2")},
274   {21, 229, N_("Canon EF 16-35mm f/2.8L")},
275   {21, 230, N_("Canon EF 24-70mm f/2.8L")},
276   {21, 231, N_("Canon EF 17-40mm f/4L")},
277   {21, 232, N_("Canon EF 70-300mm f/4.5-5.6 DO IS USM")},
278   {21, 234, N_("Canon EF-S 17-85mm f4-5.6 IS USM")},
279   {21, 235, N_("Canon EF-S10-22mm F3.5-4.5 USM")},
280   {21, 236, N_("Canon EF-S60mm F2.8 Macro USM")},
281   {21, 237, N_("Canon EF 24-105mm f/4L IS")},
282   {21, 238, N_("Canon EF 70-300mm F4-5.6 IS USM")},
283   {21, 241, N_("Canon EF 50mm F1.2L USM")},
284   {21, 242, N_("Canon EF 70-200mm f/4L IS USM")},
285   {21, 251, N_("Canon EF 70-200mm f/2.8L IS II USM")},
286   {28, 0, N_("Manual")},
287   {28, 1, N_("TTL")},
288   {28, 2, N_("A-TTL")},
289   {28, 3, N_("E-TTL")},
290   {28, 4, N_("FP sync enabled")},
291   {28, 7, N_("2nd-curtain sync used")},
292   {28, 11, N_("FP sync used")},
293   {28, 13, N_("Internal")},
294   {28, 14, N_("External")},
295   {31,  0, N_("Single")},
296   {31,  1, N_("Continuous")},
297   {32, 0, N_("Normal AE")},
298   {32, 1, N_("Exposure compensation")},
299   {32, 2, N_("AE lock")},
300   {32, 3, N_("AE lock + exposure compensation")},
301   {32, 4, N_("No AE")},
302   {33, 0, N_("Off")},
303   {33, 1, N_("On")},
304   {33, 2, N_("On, shot only")},
305   {39, 0, N_("Off")},
306   {39, 1, N_("Vivid")},
307   {39, 2, N_("Neutral")},
308   {39, 3, N_("Smooth")},
309   {39, 4, N_("Sepia")},
310   {39, 5, N_("Black & white")},
311   {39, 6, N_("Custom")},
312   {39, 100, N_("My color data")},
313   {40, 0, N_("Off")},
314   {40, 0x0500, N_("Full")},
315   {40, 0x0502, N_("2/3")},
316   {40, 0x0504, N_("1/3")},
317 #endif
318   { 0,  0, NULL}
319 },
320 entries_focal_length [] = {
321 #ifndef NO_VERBOSE_TAG_DATA
322 	{0, 1, N_("Fixed")},
323 	{0, 2, N_("Zoom")},
324 #endif
325 	{0, 0, NULL}
326 },
327 entries_settings_2 [] = {
328 #ifndef NO_VERBOSE_TAG_DATA
329   { 6,  0, N_("Auto")},
330   { 6,  1, N_("Sunny")},
331   { 6,  2, N_("Cloudy")},
332   { 6,  3, N_("Tungsten")},
333   { 6,  4, N_("Fluorescent")},
334   { 6,  5, N_("Flash")},
335   { 6,  6, N_("Custom")},
336   { 6,  7, N_("Black & white")},
337   { 6,  8, N_("Shade")},
338   { 6,  9, N_("Manual temperature (Kelvin)")},
339   { 6,  10, N_("PC set 1")},
340   { 6,  11, N_("PC set 2")},
341   { 6,  12, N_("PC set 3")},
342   { 6,  14, N_("Daylight fluorescent")},
343   { 6,  15, N_("Custom 1")},
344   { 6,  16, N_("Custom 2")},
345   { 6,  17, N_("Underwater")},
346   { 7,  0, N_("Off")},
347   { 7,  1, N_("Night scene")},
348   { 7,  2, N_("On")},
349   { 7,  3, N_("None")},
350   { 13,  0x3000, N_("None (MF)")},
351   { 13,  0x3001, N_("Right")},
352   { 13,  0x3002, N_("Center")},
353   { 13,  0x3003, N_("Center-right")},
354   { 13,  0x3004, N_("Left")},
355   { 13,  0x3005, N_("Left-right")},
356   { 13,  0x3006, N_("Left-center")},
357   { 13,  0x3007, N_("All")},
358   { 15,  0, N_("Off")},
359   { 15,  1, N_("On (shot 1)")},
360   { 15,  2, N_("On (shot 2)")},
361   { 15,  3, N_("On (shot 3)")},
362   { 15,  0xffff, N_("On")},
363   { 25,  248, N_("EOS high-end")},
364   { 25,  250, N_("Compact")},
365   { 25,  252, N_("EOS mid-range")},
366   { 26,  0, N_("None")},
367   { 26,  1, N_("Rotate 90 CW")},
368   { 26,  2, N_("Rotate 180")},
369   { 26,  3, N_("Rotate 270 CW")},
370   { 26,  0xffff, N_("Rotated by software")},
371   { 27,  0, N_("Off")},
372   { 27,  1, N_("On")},
373   { 32,  0, N_("Off")},
374   { 32,  0x0014, N_("1/3")},
375   { 32,  0x008c, N_("2/3")},
376   { 32,  0x07d0, N_("Full")},
377 #endif
378   {0, 0, NULL}
379 },
380 entries_panorama [] = {
381 #ifndef NO_VERBOSE_TAG_DATA
382 	{0, 0, N_("Left to right")},
383 	{0, 1, N_("Right to left")},
384 	{0, 2, N_("Bottom to top")},
385 	{0, 3, N_("Top to bottom")},
386 	{0, 4, N_("2x2 matrix (clockwise)")},
387 #endif
388 	{0, 0, NULL}
389 },
390 color_information [] = {
391 #ifndef NO_VERBOSE_TAG_DATA
392   {0, 0, N_("Standard")},
393   {0, 1, N_("Manual")},
394   {0, 2, N_("Custom")},
395   {2, 0, N_("N/A")},
396   {2, 1, N_("Lowest")},
397   {2, 2, N_("Low")},
398   {2, 3, N_("Standard")},
399   {2, 4, N_("High")},
400   {2, 5, N_("Highest")},
401   {7,  0, N_("Auto")},
402   {7,  1, N_("Daylight")},
403   {7,  2, N_("Cloudy")},
404   {7,  3, N_("Tungsten")},
405   {7,  4, N_("Fluorescent")},
406   {7,  5, N_("Flash")},
407   {7,  6, N_("Custom")},
408   {7,  7, N_("Black & white")},
409   {7,  8, N_("Shade")},
410   {7,  9, N_("Manual temperature (Kelvin)")},
411   {7, 10, N_("PC set 1")},
412   {7, 11, N_("PC set 2")},
413   {7, 12, N_("PC set 3")},
414   {7, 14, N_("Daylight fluorescent")},
415   {7, 15, N_("Custom 1")},
416   {7, 16, N_("Custom 2")},
417   {7, 17, N_("Underwater")},
418   {9, 0x00, N_("None")},
419   {9, 0x01, N_("Standard")},
420   {9, 0x02, N_("Set 1")},
421   {9, 0x03, N_("Set 2")},
422   {9, 0x04, N_("Set 3")},
423   {9, 0x21, N_("User def. 1")},
424   {9, 0x22, N_("User def. 2")},
425   {9, 0x23, N_("User def. 3")},
426   {9, 0x41, N_("External 1")},
427   {9, 0x42, N_("External 2")},
428   {9, 0x43, N_("External 3")},
429   {9, 0x81, N_("Standard")},
430   {9, 0x82, N_("Portrait")},
431   {9, 0x83, N_("Landscape")},
432   {9, 0x84, N_("Neutral")},
433   {9, 0x85, N_("Faithful")},
434   {9, 0x86, N_("Monochrome")},
435 #endif
436   {0, 0, NULL}
437 };
438 
439 static void
canon_search_table_value(const struct canon_entry_table_t table[],unsigned int t,ExifShort vs,char * val,unsigned int maxlen)440 canon_search_table_value (const struct canon_entry_table_t table[],
441     unsigned int t, ExifShort vs, char *val, unsigned int maxlen)
442 {
443 	unsigned int j;
444 
445 	/* Search the table for the first matching subtag and value. */
446 	for (j = 0; table[j].name && ((table[j].subtag < t) ||
447 			((table[j].subtag == t) && table[j].value <= vs)); j++) {
448 		if ((table[j].subtag == t) && (table[j].value == vs)) {
449 			break;
450 		}
451 	}
452 	if ((table[j].subtag == t) && (table[j].value == vs) && table[j].name) {
453 		/* Matching subtag and value found. */
454 		strncpy (val, _(table[j].name), maxlen);
455 	} else {
456 		/* No matching subtag and/or value found. */
457 		snprintf (val, maxlen, "0x%04x", vs);
458 	}
459 }
460 
461 static void
canon_search_table_bitfield(const struct canon_entry_table_t table[],unsigned int t,ExifShort vs,char * val,unsigned int maxlen)462 canon_search_table_bitfield (const struct canon_entry_table_t table[],
463     unsigned int t, ExifShort vs, char *val, unsigned int maxlen)
464 {
465 	unsigned int j;
466 
467 	/* Search the table for the first matching subtag. */
468 	for (j = 0; table[j].name && (table[j].subtag <= t); j++) {
469 		if (table[j].subtag == t) {
470 			break;
471 		}
472 	}
473 	if ((table[j].subtag == t) && table[j].name) {
474 		unsigned int i, bit, lastbit = 0;
475 
476 		/*
477 		 * Search the table for the last matching bit, because
478 		 * that one needs no additional comma appended.
479 		 */
480 		for (i = j; table[i].name && (table[i].subtag == t); i++) {
481 			bit = table[i].value;
482 			if ((vs >> bit) & 1) {
483 				lastbit = bit;
484 			}
485 		}
486 		/* Search the table for all matching bits. */
487 		for (i = j; table[i].name && (table[i].subtag == t); i++) {
488 			bit = table[i].value;
489 			if ((vs >> bit) & 1) {
490 				strncat(val, _(table[i].name), maxlen - strlen (val));
491 				if (bit != lastbit)
492 					strncat (val, _(", "), maxlen - strlen (val));
493 			}
494 		}
495 	} else {
496 		/* No matching subtag found. */
497 		snprintf (val, maxlen, "0x%04x", vs);
498 	}
499 }
500 
501 unsigned int
mnote_canon_entry_count_values(const MnoteCanonEntry * entry)502 mnote_canon_entry_count_values (const MnoteCanonEntry *entry)
503 {
504 	unsigned int  val;
505 
506 	if (!entry) return 0;
507 
508 	switch (entry->tag) {
509 	case MNOTE_CANON_TAG_FOCAL_LENGTH:
510 	case MNOTE_CANON_TAG_PANORAMA:
511 		return entry->components;
512 	case MNOTE_CANON_TAG_SETTINGS_1:
513 	case MNOTE_CANON_TAG_SETTINGS_2:
514 	case MNOTE_CANON_TAG_CUSTOM_FUNCS:
515 	case MNOTE_CANON_TAG_COLOR_INFORMATION:
516 		if (entry->format != EXIF_FORMAT_SHORT) return 0;
517 
518 		val = exif_get_short (entry->data, entry->order);
519 		/* val is buffer size, i.e. # of values plus 1 */
520 		return MIN (entry->size - 2, val) / 2;
521 	default:
522 		return 1;
523 	}
524 }
525 
526 /*
527  * For reference, see Exif 2.1 specification (Appendix C),
528  * or http://en.wikipedia.org/wiki/APEX_system
529  */
530 static double
apex_value_to_aperture(double x)531 apex_value_to_aperture (double x)
532 {
533 	return pow (2, x / 2.);
534 }
535 
536 static double
apex_value_to_shutter_speed(double x)537 apex_value_to_shutter_speed(double x)
538 {
539 	return 1.0 / pow (2, x);
540 }
541 
542 static double
apex_value_to_iso_speed(double x)543 apex_value_to_iso_speed (double x)
544 {
545 	return 3.125 * pow (2, x);
546 }
547 
548 char *
mnote_canon_entry_get_value(const MnoteCanonEntry * entry,unsigned int t,char * val,unsigned int maxlen)549 mnote_canon_entry_get_value (const MnoteCanonEntry *entry, unsigned int t, char *val, unsigned int maxlen)
550 {
551 	char buf[128];
552 	ExifLong vl;
553 	ExifSLong vsl;
554 	ExifShort vs, n;
555 	ExifSShort vss;
556 	unsigned char *data;
557 	size_t	size;
558 	double d;
559 
560 	if (!entry)
561 		return NULL;
562 
563 	data = entry->data;
564 	size = entry->size;
565 
566 	memset (val, 0, maxlen);
567 	maxlen--;
568 
569 	switch (entry->tag) {
570 	case MNOTE_CANON_TAG_SETTINGS_1:
571 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
572 
573 		if (size < 2) return NULL;
574 		n = exif_get_short (data, entry->order) / 2;
575 		if (t >= n) return NULL;
576 
577 		CC (entry->components, n, val, maxlen);
578 
579 		if (size < 2 + t*2 + 2) return NULL;
580 		vs = exif_get_short (data + 2 + t * 2, entry->order);
581 		switch (t) {
582 		case 1:
583 			if (!vs) {
584 				strncpy(val, _("Off"), maxlen);
585 				break;
586 			}
587 			snprintf (val, maxlen, _("%i (ms)"), vs * 100);
588 			break;
589 		case 15:
590 			if (((vs & 0xC000) == 0x4000) && (vs != 0x7FFF)) {
591 				/* Canon S3 IS - directly specified value */
592 				snprintf (val, maxlen, "%i", vs & ~0x4000);
593 			} else {
594 				/* Standard Canon - index into lookup table */
595 				canon_search_table_value (entries_settings_1, t, vs, val, maxlen);
596 			}
597 			break;
598 		case 22:
599 		case 23:
600 		case 24:
601 			snprintf (val, maxlen, "%u", vs);
602 			break;
603 		case 25:
604 		case 26:
605 			snprintf (val, maxlen, "%.2f", apex_value_to_aperture (vs / 32.0));
606 			break;
607 		case 28:
608 			canon_search_table_bitfield(entries_settings_1, t, vs, val, maxlen);
609 			break;
610 		case 34:
611 			snprintf (val, maxlen, "%.2f", vs / 10.0);
612 			break;
613 		case 35:
614 		case 36:
615 			snprintf (val, maxlen, "%u", vs);
616 			break;
617 		default:
618 			canon_search_table_value (entries_settings_1, t, vs, val, maxlen);
619 		}
620 		break;
621 
622 	case MNOTE_CANON_TAG_FOCAL_LENGTH:
623 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
624 		if (size < t*2 + 2) return NULL;
625 		vs = exif_get_short (data + t * 2, entry->order);
626 		switch (t) {
627 		case 1:
628 			snprintf (val, maxlen, "%u", vs);
629 			break;
630 		case 2:
631 		case 3:
632 			snprintf (val, maxlen, _("%.2f mm"), vs * 25.4 / 1000);
633 			break;
634 		default:
635 			canon_search_table_value (entries_focal_length, t, vs, val, maxlen);
636 		}
637 		break;
638 
639 	case MNOTE_CANON_TAG_SETTINGS_2:
640 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
641 		if (size < 2) return NULL;
642 		n = exif_get_short (data, entry->order) / 2;
643 		if (t >= n) return NULL;
644 		CC (entry->components, n, val, maxlen);
645 		if (size < 2 + t*2 + 2) return NULL;
646 		vss = exif_get_sshort (data + 2 + t * 2, entry->order);
647 		switch (t) {
648 		case 0:
649 			snprintf (val, maxlen, "%.3f", pow (2, vss / 32.0));
650 			break;
651 		case 1:
652 			snprintf (val, maxlen, "%.0f", apex_value_to_iso_speed (vss / 32.0));
653 			break;
654 		case 2:
655 		case 5:
656 		case 14:
657 		case 16:
658 			snprintf (val, maxlen, _("%.2f EV"), vss / 32.0);
659 			break;
660 		case 3:
661 		case 20:
662 			snprintf (val, maxlen, "%.2f", apex_value_to_aperture (vss / 32.0));
663 			break;
664 		case 4:
665 		case 21:
666 			d = apex_value_to_shutter_speed (vss / 32.0);
667 			if (d < 1)
668 				snprintf (val, maxlen, _("1/%.0f"), 1.0 / d);
669 			else
670 				snprintf (val, maxlen, "%.0f", d);
671 			break;
672 		case 8:
673 			snprintf (val, maxlen, "%u", vss);
674 			break;
675 		case 12:
676 			snprintf (val, maxlen, "%.2f", vss / 32.0);
677 			break;
678 		case 18:
679 		case 19:
680 			snprintf (val, maxlen, _("%u mm"), vss);
681 			break;
682 		case 28:
683 			if (vss <= 0) {
684 				strncpy(val, _("Off"), maxlen);
685 				break;
686 			}
687 			snprintf (val, maxlen, _("%i (ms)"), vss * 100);
688 			break;
689 		default:
690 			canon_search_table_value (entries_settings_2, t, vss, val, maxlen);
691 		}
692 		break;
693 
694 	case MNOTE_CANON_TAG_PANORAMA:
695 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
696 		if (size < t*2 + 2) return NULL;
697 		vs = exif_get_short (data + t * 2, entry->order);
698 		canon_search_table_value (entries_panorama, t, vs, val, maxlen);
699 		break;
700 
701 	case MNOTE_CANON_TAG_OWNER:
702 		CC (entry->components, 32, val, maxlen);
703 		/* Fall through; ImageType can have many sizes */
704 		/* fall through */
705 	case MNOTE_CANON_TAG_IMAGE_TYPE:
706 		CF (entry->format, EXIF_FORMAT_ASCII, val, maxlen);
707 		strncpy (val, (char *)data, MIN (entry->size, maxlen));
708 		break;
709 
710 	case MNOTE_CANON_TAG_FIRMWARE:
711 		CF (entry->format, EXIF_FORMAT_ASCII, val, maxlen);
712 /*		CC2 (entry->components, 24, 32, val, maxlen); Can also be 22 */
713 		strncpy (val, (char *)data, MIN (entry->size, maxlen));
714 		break;
715 
716 	case MNOTE_CANON_TAG_IMAGE_NUMBER:
717 		CF (entry->format, EXIF_FORMAT_LONG, val, maxlen);
718 		CC (entry->components, 1, val, maxlen);
719 		if (size < 4) return NULL;
720 		vl = exif_get_long (data, entry->order);
721 		snprintf (val, maxlen, "%03lu-%04lu",
722 				(unsigned long) vl/10000,
723 				(unsigned long) vl%10000);
724 		break;
725 
726 	case MNOTE_CANON_TAG_SERIAL_NUMBER:
727 		CF (entry->format, EXIF_FORMAT_LONG, val, maxlen);
728 		CC (entry->components, 1, val, maxlen);
729 		if (size < 4) return NULL;
730 		vl = exif_get_long (data, entry->order);
731 		snprintf (val, maxlen, "%04X-%05d", (int)vl>>16,(int)vl&0xffff);
732 		break;
733 
734 	case MNOTE_CANON_TAG_CUSTOM_FUNCS:
735 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
736 		if (size < 2) return NULL;
737 		n = exif_get_short (data, entry->order) / 2;
738 		if (t >= n) return NULL;
739 		CC (entry->components, n, val, maxlen);
740 		if (size < 2 + t*2 + 2) return NULL;
741 		vs = exif_get_short (data + 2 + t * 2, entry->order);
742 		snprintf (buf, sizeof (buf), "%u", vs);
743 		strncat (val, buf, maxlen - strlen (val));
744 		break;
745 
746 	case MNOTE_CANON_TAG_COLOR_INFORMATION:
747 		CF (entry->format, EXIF_FORMAT_SHORT, val, maxlen);
748 		if (size < 2) return NULL;
749 		n = exif_get_short (data, entry->order) / 2;
750 		if (t >= n) return NULL;
751 		CC (entry->components, n, val, maxlen);
752 		if (size < 2 + t*2 + 2) return NULL;
753 		vs = exif_get_short (data + 2 + t * 2, entry->order);
754 		canon_search_table_value (color_information, t, vs, val, maxlen);
755 		break;
756 
757 	default:
758 		switch (entry->format) {
759 		case EXIF_FORMAT_SHORT:
760 		  {
761 			size_t i, len = strlen(val);
762 			for(i=0; i<entry->components; i++) {
763 				if (size < 2)
764 					break;
765 				vs = exif_get_short (data, entry->order);
766 				snprintf (val+len, maxlen-len, "%hu ", vs);
767 				len = strlen(val);
768 				data += 2;
769 				size -= 2;
770 			}
771 		  }
772 		  break;
773 		case EXIF_FORMAT_SSHORT:
774 		  {
775 			size_t i, len = strlen(val);
776 			for(i=0; i<entry->components; i++) {
777 				if (size < 2)
778 					break;
779 				vss = exif_get_sshort (data, entry->order);
780 				snprintf (val+len, maxlen-len, "%hi ", vss);
781 				data += 2;
782 				size -= 2;
783 			}
784 		  }
785 		  break;
786 		case EXIF_FORMAT_LONG:
787 		  {
788 			size_t i, len = strlen(val);
789 			for(i=0; i<entry->components; i++) {
790 				if (size < 4)
791 					break;
792 				vl = exif_get_long (data, entry->order);
793 				snprintf (val+len, maxlen-len, "%lu ", (long unsigned) vl);
794 				data += 4;
795 				size -= 4;
796 			}
797 		  }
798 		  break;
799 		case EXIF_FORMAT_SLONG:
800 		  {
801 			size_t i, len = strlen(val);
802 			for(i=0; i<entry->components; i++) {
803 				if (size < 4)
804 					break;
805 				vsl = exif_get_slong (data, entry->order);
806 				snprintf (val+len, maxlen-len, "%li ", (long int) vsl);
807 				data += 4;
808 				size -= 4;
809 			}
810 		  }
811 		  break;
812 		case EXIF_FORMAT_ASCII:
813 			strncpy (val, (char *)data, MIN (entry->size, maxlen));
814 			break;
815 		default:
816 		  snprintf (val, maxlen, _("%i bytes unknown data"),
817 			  entry->size);
818 		  break;
819 		}
820 		break;
821 	}
822 	return val;
823 }
824