2 * Copyright (C) 2003, 2006 John Ellis
3 * Copyright (C) 2008 - 2016 The Geeqie Team
5 * Authors: Eric Swalens, Quy Tonthat
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program 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
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 * The tags were added with information from the FREE document:
22 * http://www.ba.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html
24 * For the official Exif Format, please refer to:
26 * http://www.exif.org/specifications.html (PDF spec sheets)
29 * Additional tag formats should be added to the proper
30 * location in ExifKnownMarkersList[].
32 * Human readable output (that needs additional processing of data to
33 * be useable) can be defined by adding a key to ExifFormattedList[],
34 * then handling that tag in the function exif_get_formatted_by_key().
35 * The human readable formatted keys must begin with the character 'f'.
37 * Unsupported at this time:
42 * Convert data to useable form in the ??_as_text function for:
43 * ComponentsConfiguration
44 * UserComment (convert this to UTF-8?)
45 * Add support for marker tag 0x0000
58 #include <sys/types.h>
62 #include <glib/gprintf.h>
65 #include "jpeg-parser.h"
68 #include "format-raw.h"
70 #include "ui-fileops.h"
74 *-----------------------------------------------------------------------------
76 *-----------------------------------------------------------------------------
79 ExifFormatAttrib ExifFormatList[] = {
80 { EXIF_FORMAT_UNKNOWN, 1, "unknown", "unknown" },
81 { EXIF_FORMAT_BYTE_UNSIGNED, 1, "ubyte", "unsigned byte" },
82 { EXIF_FORMAT_STRING, 1, "string", "string" },
83 { EXIF_FORMAT_SHORT_UNSIGNED, 2, "ushort", "unsigned short" },
84 { EXIF_FORMAT_LONG_UNSIGNED, 4, "ulong", "unsigned long" },
85 { EXIF_FORMAT_RATIONAL_UNSIGNED,8, "urational", "unsigned rational" },
86 { EXIF_FORMAT_BYTE, 1, "byte", "byte" },
87 { EXIF_FORMAT_UNDEFINED, 1, "undefined", "undefined" },
88 { EXIF_FORMAT_SHORT, 2, "sshort", "signed short" },
89 { EXIF_FORMAT_LONG, 4, "slong", "signed long" },
90 { EXIF_FORMAT_RATIONAL, 8, "srational", "signed rational" },
91 { EXIF_FORMAT_FLOAT, 4, "float", "float" },
92 { EXIF_FORMAT_DOUBLE, 8, "double", "double" },
93 { static_cast<ExifFormatType>(-1), 0, nullptr, nullptr }
96 /* tags that are special, or need special treatment */
97 #define TAG_EXIFOFFSET 0x8769
98 #define TAG_EXIFMAKERNOTE 0x927c
99 #define TAG_GPSOFFSET 0x8825
103 *-----------------------------------------------------------------------------
105 *-----------------------------------------------------------------------------
107 static ExifTextList ExifCompressionList[] = {
108 { 1, "Uncompressed" },
110 { 3, "T4/Group 3 Fax" },
111 { 4, "T6/Group 4 Fax" },
113 { 6, "JPEG (old style)" },
115 { 8, "Adobe Deflate" },
117 { 10, "JBIG Color" },
119 { 32771, "CCIRLEW" },
120 { 32773, "PackBits" },
121 { 32809, "ThunderScan" },
122 { 32895, "IT8CTPAD" },
126 { 32908, "PixasFilm" },
127 { 32909, "PixasLog" },
128 { 32946, "Deflate" },
132 { 34677, "SGILog24" },
133 { 34712, "JPEF 2000" },
134 { 34713, "Nikon NEF Compressed" },
138 static ExifTextList ExifOrientationList[] = {
139 { EXIF_ORIENTATION_UNKNOWN, N_("unknown") },
140 { EXIF_ORIENTATION_TOP_LEFT, N_("top left") },
141 { EXIF_ORIENTATION_TOP_RIGHT, N_("top right") },
142 { EXIF_ORIENTATION_BOTTOM_RIGHT,N_("bottom right") },
143 { EXIF_ORIENTATION_BOTTOM_LEFT, N_("bottom left") },
144 { EXIF_ORIENTATION_LEFT_TOP, N_("left top") },
145 { EXIF_ORIENTATION_RIGHT_TOP, N_("right top") },
146 { EXIF_ORIENTATION_RIGHT_BOTTOM,N_("right bottom") },
147 { EXIF_ORIENTATION_LEFT_BOTTOM, N_("left bottom") },
151 static ExifTextList ExifUnitList[] = {
152 { EXIF_UNIT_UNKNOWN, N_("unknown") },
153 { EXIF_UNIT_NOUNIT, "" },
154 { EXIF_UNIT_INCH, N_("inch") },
155 { EXIF_UNIT_CENTIMETER, N_("centimeter") },
159 static ExifTextList ExifYCbCrPosList[] = {
165 static ExifTextList ExifMeteringModeList[] = {
166 { 0, N_("unknown") },
167 { 1, N_("average") },
168 { 2, N_("center weighted") },
170 { 4, N_("multi-spot") },
171 { 5, N_("multi-segment") },
172 { 6, N_("partial") },
173 { 255, N_("other") },
177 static ExifTextList ExifExposureProgramList[] = {
178 { 0, N_("not defined") },
181 { 3, N_("aperture") },
182 { 4, N_("shutter") },
183 { 5, N_("creative") },
185 { 7, N_("portrait") },
186 { 8, N_("landscape") },
190 static ExifTextList ExifLightSourceList[] = {
191 { 0, N_("unknown") },
192 { 1, N_("daylight") },
193 { 2, N_("fluorescent") },
194 { 3, N_("tungsten (incandescent)") },
196 { 9, N_("fine weather") },
197 { 10, N_("cloudy weather") },
199 { 12, N_("daylight fluorescent") },
200 { 13, N_("day white fluorescent") },
201 { 14, N_("cool white fluorescent") },
202 { 15, N_("white fluorescent") },
203 { 17, N_("standard light A") },
204 { 18, N_("standard light B") },
205 { 19, N_("standard light C") },
210 { 24, N_("ISO studio tungsten") },
211 { 255, N_("other") },
215 static ExifTextList ExifFlashList[] = {
218 { 5, N_("yes, not detected by strobe") },
219 { 7, N_("yes, detected by strobe") },
223 static ExifTextList ExifColorSpaceList[] = {
225 { 65535,N_("uncalibrated") },
229 static ExifTextList ExifSensorList[] = {
230 { 1, N_("not defined") },
231 { 2, N_("1 chip color area") },
232 { 2, N_("2 chip color area") },
233 { 4, N_("3 chip color area") },
234 { 5, N_("color sequential area") },
235 { 7, N_("trilinear") },
236 { 8, N_("color sequential linear") },
240 static ExifTextList ExifSourceList[] = {
241 { 3, N_("digital still camera") },
245 static ExifTextList ExifSceneList[] = {
246 { 1, N_("direct photo") },
250 static ExifTextList ExifCustRenderList[] = {
256 static ExifTextList ExifExposureModeList[] = {
259 { 2, N_("auto bracket") },
263 static ExifTextList ExifWhiteBalanceList[] = {
269 static ExifTextList ExifSceneCaptureList[] = {
270 { 0, N_("standard") },
271 { 1, N_("landscape") },
272 { 2, N_("portrait") },
273 { 3, N_("night scene") },
277 static ExifTextList ExifGainControlList[] = {
279 { 1, N_("low gain up") },
280 { 2, N_("high gain up") },
281 { 3, N_("low gain down") },
282 { 4, N_("high gain down") },
286 static ExifTextList ExifContrastList[] = {
293 static ExifTextList ExifSaturationList[] = {
300 static ExifTextList ExifSharpnessList[] = {
307 static ExifTextList ExifSubjectRangeList[] = {
308 { 0, N_("unknown") },
311 { 3, N_("distant") },
316 Tag names should match to exiv2 keys, https://www.exiv2.org/metadata.html
317 Tags that don't match are not supported by exiv2 and should not be used anywhere in the code
320 ExifMarker ExifKnownMarkersList[] = {
321 { 0x0100, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Image.ImageWidth", N_("Image Width"), nullptr },
322 { 0x0101, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Image.ImageLength", N_("Image Height"), nullptr },
323 { 0x0102, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Image.BitsPerSample", N_("Bits per Sample/Pixel"), nullptr },
324 { 0x0103, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Image.Compression", N_("Compression"), ExifCompressionList },
325 { 0x010e, EXIF_FORMAT_STRING, -1, "Exif.Image.ImageDescription", N_("Image description"), nullptr },
326 { 0x010f, EXIF_FORMAT_STRING, -1, "Exif.Image.Make", N_("Camera make"), nullptr },
327 { 0x0110, EXIF_FORMAT_STRING, -1, "Exif.Image.Model", N_("Camera model"), nullptr },
328 { 0x0112, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Image.Orientation", N_("Orientation"), ExifOrientationList },
329 { 0x011a, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Image.XResolution", N_("X resolution"), nullptr },
330 { 0x011b, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Image.YResolution", N_("Y Resolution"), nullptr },
331 { 0x0128, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Image.ResolutionUnit", N_("Resolution units"), ExifUnitList },
332 { 0x0131, EXIF_FORMAT_STRING, -1, "Exif.Image.Software", N_("Firmware"), nullptr },
333 { 0x0132, EXIF_FORMAT_STRING, 20, "Exif.Image.DateTime", N_("Date"), nullptr },
334 { 0x013e, EXIF_FORMAT_RATIONAL_UNSIGNED, 2, "Exif.Image.WhitePoint", N_("White point"), nullptr },
335 { 0x013f, EXIF_FORMAT_RATIONAL_UNSIGNED, 6, "Exif.Image.PrimaryChromaticities",N_("Primary chromaticities"), nullptr },
336 { 0x0211, EXIF_FORMAT_RATIONAL_UNSIGNED, 3, "Exif.Image.YCbCrCoefficients", N_("YCbCy coefficients"), nullptr },
337 { 0x0213, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Image.YCbCrPositioning", N_("YCbCr positioning"), ExifYCbCrPosList },
338 { 0x0214, EXIF_FORMAT_RATIONAL_UNSIGNED, 6, "Exif.Image.ReferenceBlackWhite",N_("Black white reference"), nullptr },
339 { 0x8298, EXIF_FORMAT_STRING, -1, "Exif.Image.Copyright", N_("Copyright"), nullptr },
340 { 0x8769, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Image.ExifTag", N_("SubIFD Exif offset"), nullptr },
342 { 0x829a, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.ExposureTime", N_("Exposure time (seconds)"), nullptr },
343 { 0x829d, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FNumber", N_("FNumber"), nullptr },
344 { 0x8822, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.ExposureProgram", N_("Exposure program"), ExifExposureProgramList },
345 { 0x8824, EXIF_FORMAT_STRING, -1, "Exif.Photo.SpectralSensitivity",N_("Spectral Sensitivity"), nullptr },
346 { 0x8827, EXIF_FORMAT_SHORT_UNSIGNED, -1, "Exif.Photo.ISOSpeedRatings", N_("ISO sensitivity"), nullptr },
347 { 0x8828, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.OECF", N_("Optoelectric conversion factor"), nullptr },
348 { 0x9000, EXIF_FORMAT_UNDEFINED, 4, "Exif.Photo.ExifVersion", N_("Exif version"), nullptr },
349 { 0x9003, EXIF_FORMAT_STRING, 20, "Exif.Photo.DateTimeOriginal", N_("Date original"), nullptr },
350 { 0x9004, EXIF_FORMAT_STRING, 20, "Exif.Photo.DateTimeDigitized", N_("Date digitized"), nullptr },
351 { 0x9101, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.ComponentsConfiguration",N_("Pixel format"), nullptr },
352 { 0x9102, EXIF_FORMAT_RATIONAL_UNSIGNED,1, "Exif.Photo.CompressedBitsPerPixel",N_("Compression ratio"), nullptr },
353 { 0x9201, EXIF_FORMAT_RATIONAL, 1, "Exif.Photo.ShutterSpeedValue", N_("Shutter speed"), nullptr },
354 { 0x9202, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.ApertureValue", N_("Aperture"), nullptr },
355 { 0x9203, EXIF_FORMAT_RATIONAL, 1, "Exif.Photo.BrightnessValue", N_("Brightness"), nullptr },
356 { 0x9204, EXIF_FORMAT_RATIONAL, 1, "Exif.Photo.ExposureBiasValue", N_("Exposure bias"), nullptr },
357 { 0x9205, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.MaxApertureValue", N_("Maximum aperture"), nullptr },
358 { 0x9206, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.SubjectDistance", N_("Subject distance"), nullptr },
359 { 0x9207, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.MeteringMode", N_("Metering mode"), ExifMeteringModeList },
360 { 0x9208, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.LightSource", N_("Light source"), ExifLightSourceList },
361 { 0x9209, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.Flash", N_("Flash"), ExifFlashList },
362 { 0x920a, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FocalLength", N_("Focal length"), nullptr },
363 { 0x9214, EXIF_FORMAT_SHORT_UNSIGNED, -1, "Exif.Photo.SubjectArea", N_("Subject area"), nullptr },
364 { 0x927c, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.MakerNote", N_("MakerNote"), nullptr },
365 { 0x9286, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.UserComment", N_("UserComment"), nullptr },
366 { 0x9290, EXIF_FORMAT_STRING, -1, "Exif.Photo.SubSecTime", N_("Subsecond time"), nullptr },
367 { 0x9291, EXIF_FORMAT_STRING, -1, "Exif.Photo.SubSecTimeOriginal",N_("Subsecond time original"), nullptr },
368 { 0x9292, EXIF_FORMAT_STRING, -1, "Exif.Photo.SubSecTimeDigitized",N_("Subsecond time digitized"), nullptr },
369 { 0xa000, EXIF_FORMAT_UNDEFINED, 4, "Exif.Photo.FlashpixVersion", N_("FlashPix version"), nullptr },
370 { 0xa001, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.ColorSpace", N_("Colorspace"), ExifColorSpaceList },
371 /* ExifImageWidth, ExifImageHeight can also be unsigned short */
372 { 0xa002, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Photo.PixelXDimension", N_("Width"), nullptr },
373 { 0xa003, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Photo.PixelYDimension", N_("Height"), nullptr },
374 { 0xa004, EXIF_FORMAT_STRING, -1, "Exif.Photo.RelatedSoundFile", N_("Audio data"), nullptr },
375 { 0xa005, EXIF_FORMAT_LONG_UNSIGNED, 1, "ExifInteroperabilityOffset", N_("ExifR98 extension"), nullptr },
376 { 0xa20b, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FlashEnergy", N_("Flash strength"), nullptr },
377 { 0xa20c, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.SpatialFrequencyResponse",N_("Spatial frequency response"), nullptr },
378 { 0xa20e, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FocalPlaneXResolution", N_("X Pixel density"), nullptr },
379 { 0xa20f, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FocalPlaneYResolution", N_("Y Pixel density"), nullptr },
380 { 0xa210, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.FocalPlaneResolutionUnit", N_("Pixel density units"), ExifUnitList },
381 { 0x0214, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Exif.Photo.SubjectLocation", N_("Subject location"), nullptr },
382 { 0xa215, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.ExposureIndex", N_("ISO sensitivity"), nullptr },
383 { 0xa217, EXIF_FORMAT_SHORT_UNSIGNED, -1, "Exif.Photo.SensingMethod", N_("Sensor type"), ExifSensorList },
384 { 0xa300, EXIF_FORMAT_UNDEFINED, 1, "Exif.Photo.FileSource", N_("Source type"), ExifSourceList },
385 { 0xa301, EXIF_FORMAT_UNDEFINED, 1, "Exif.Photo.SceneType", N_("Scene type"), ExifSceneList },
386 { 0xa302, EXIF_FORMAT_UNDEFINED, -1, "Exif.Image.CFAPattern", N_("Color filter array pattern"), nullptr },
387 /* tags a4xx were added for Exif 2.2 (not just these - some above, as well) */
388 { 0xa401, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.CustomRendered", N_("Render process"), ExifCustRenderList },
389 { 0xa402, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.ExposureMode", N_("Exposure mode"), ExifExposureModeList },
390 { 0xa403, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.WhiteBalance", N_("White balance"), ExifWhiteBalanceList },
391 { 0xa404, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.DigitalZoomRatio", N_("Digital zoom ratio"), nullptr },
392 { 0xa405, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.FocalLengthIn35mmFilm",N_("Focal length (35mm)"), nullptr },
393 { 0xa406, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.SceneCaptureType", N_("Scene capture type"), ExifSceneCaptureList },
394 { 0xa407, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.GainControl", N_("Gain control"), ExifGainControlList },
395 { 0xa408, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.Contrast", N_("Contrast"), ExifContrastList },
396 { 0xa409, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.Saturation", N_("Saturation"), ExifSaturationList },
397 { 0xa40a, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.Sharpness", N_("Sharpness"), ExifSharpnessList },
398 { 0xa40b, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.DeviceSettingDescription",N_("Device setting"), nullptr },
399 { 0xa40c, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Exif.Photo.SubjectDistanceRange",N_("Subject range"), ExifSubjectRangeList },
400 { 0xa420, EXIF_FORMAT_STRING, -1, "Exif.Photo.ImageUniqueID", N_("Image serial number"), nullptr },
401 /* place known, but undocumented or lesser used tags here */
402 { 0x00fe, EXIF_FORMAT_LONG_UNSIGNED, 1, "Exif.Image.NewSubfileType", nullptr, nullptr },
403 { 0x00ff, EXIF_FORMAT_SHORT_UNSIGNED, 1, "SubfileType", nullptr, nullptr },
404 { 0x012d, EXIF_FORMAT_SHORT_UNSIGNED, 3, "Exif.Image.TransferFunction", nullptr, nullptr },
405 { 0x013b, EXIF_FORMAT_STRING, -1, "Exif.Image.Artist", "Artist", nullptr },
406 { 0x013d, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Predictor", nullptr, nullptr },
407 { 0x0142, EXIF_FORMAT_SHORT_UNSIGNED, 1, "TileWidth", nullptr, nullptr },
408 { 0x0143, EXIF_FORMAT_SHORT_UNSIGNED, 1, "TileLength", nullptr, nullptr },
409 { 0x0144, EXIF_FORMAT_LONG_UNSIGNED, -1, "TileOffsets", nullptr, nullptr },
410 { 0x0145, EXIF_FORMAT_SHORT_UNSIGNED, -1, "TileByteCounts", nullptr, nullptr },
411 { 0x014a, EXIF_FORMAT_LONG_UNSIGNED, -1, "Exif.Image.SubIFDs", nullptr, nullptr },
412 { 0x015b, EXIF_FORMAT_UNDEFINED, -1, "JPEGTables", nullptr, nullptr },
413 { 0x828d, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Exif.Image.CFARepeatPatternDim", nullptr, nullptr },
414 { 0x828e, EXIF_FORMAT_BYTE_UNSIGNED, -1, "Exif.Image.CFAPattern", nullptr, nullptr },
415 { 0x828f, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Image.BatteryLevel", nullptr, nullptr },
416 { 0x83bb, EXIF_FORMAT_LONG_UNSIGNED, -1, "IPTC/NAA", nullptr, nullptr },
417 { 0x8773, EXIF_FORMAT_UNDEFINED, -1, "Exif.Image.InterColorProfile", nullptr, nullptr },
418 { 0x8825, EXIF_FORMAT_LONG_UNSIGNED, 1, "GPSInfo", "SubIFD GPS offset", nullptr },
419 { 0x8829, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Interlace", nullptr, nullptr },
420 { 0x882a, EXIF_FORMAT_SHORT, 1, "TimeZoneOffset", nullptr, nullptr },
421 { 0x882b, EXIF_FORMAT_SHORT_UNSIGNED, 1, "SelfTimerMode", nullptr, nullptr },
422 { 0x920b, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.FlashEnergy", nullptr, nullptr },
423 { 0x920c, EXIF_FORMAT_UNDEFINED, -1, "Exif.Photo.SpatialFrequencyResponse", nullptr, nullptr },
424 { 0x920d, EXIF_FORMAT_UNDEFINED, -1, "Noise", nullptr, nullptr },
425 { 0x9211, EXIF_FORMAT_LONG_UNSIGNED, 1, "ImageNumber", nullptr, nullptr },
426 { 0x9212, EXIF_FORMAT_STRING, 1, "SecurityClassification", nullptr, nullptr },
427 { 0x9213, EXIF_FORMAT_STRING, -1, "ImageHistory", nullptr, nullptr },
428 { 0x9215, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.Photo.ExposureIndex", nullptr, nullptr },
429 { 0x9216, EXIF_FORMAT_BYTE_UNSIGNED, 4, "TIFF/EPStandardID", nullptr, nullptr },
434 ExifMarker ExifKnownGPSInfoMarkersList[] = {
435 /* The following do not work at the moment as the tag value 0x0000 has a
436 * special meaning. */
437 /* { 0x0000, EXIF_FORMAT_BYTE, -1, "Exif.GPSInfo.GPSVersionID", NULL, NULL }, */
438 { 0x0001, EXIF_FORMAT_STRING, 2, "Exif.GPSInfo.GPSLatitudeRef", nullptr, nullptr },
439 { 0x0002, EXIF_FORMAT_RATIONAL_UNSIGNED, 3, "Exif.GPSInfo.GPSLatitude", nullptr, nullptr },
440 { 0x0003, EXIF_FORMAT_STRING, 2, "Exif.GPSInfo.GPSLongitudeRef", nullptr, nullptr },
441 { 0x0004, EXIF_FORMAT_RATIONAL_UNSIGNED, 3, "Exif.GPSInfo.GPSLongitude", nullptr, nullptr },
442 { 0x0005, EXIF_FORMAT_BYTE_UNSIGNED, 1, "Exif.GPSInfo.GPSAltitudeRef", nullptr, nullptr },
443 { 0x0006, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Exif.GPSInfo.GPSAltitude", nullptr, nullptr },
444 { 0x0007, EXIF_FORMAT_RATIONAL_UNSIGNED, 3, "Exif.GPSInfo.GPSTimeStamp", nullptr, nullptr },
445 { 0x0008, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSSatellites", nullptr, nullptr },
446 { 0x0009, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSStatus", nullptr, nullptr },
447 { 0x000a, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSMeasureMode", nullptr, nullptr },
448 { 0x000b, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSDOP", nullptr, nullptr },
449 { 0x000c, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSSpeedRef", nullptr, nullptr },
450 { 0x000d, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSSpeed", nullptr, nullptr },
451 { 0x000e, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSTrackRef", nullptr, nullptr },
452 { 0x000f, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSTrack", nullptr, nullptr },
453 { 0x0010, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSImgDirectionRef", nullptr, nullptr },
454 { 0x0011, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSImgDirection", nullptr, nullptr },
455 { 0x0012, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSMapDatum", nullptr, nullptr },
456 { 0x0013, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSDestLatitudeRef", nullptr, nullptr },
457 { 0x0014, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSDestLatitude", nullptr, nullptr },
458 { 0x0015, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSDestLongitudeRef", nullptr, nullptr },
459 { 0x0016, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSDestLongitude", nullptr, nullptr },
460 { 0x0017, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSDestBearingRef", nullptr, nullptr },
461 { 0x0018, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSDestBearing", nullptr, nullptr },
462 { 0x0019, EXIF_FORMAT_STRING, -1, "Exif.GPSInfo.GPSDestDistanceRef", nullptr, nullptr },
463 { 0x001a, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Exif.GPSInfo.GPSDestDistance", nullptr, nullptr },
464 { 0x001b, EXIF_FORMAT_UNDEFINED, -1, "Exif.GPSInfo.GPSProcessingMethod", nullptr, nullptr },
465 { 0x001c, EXIF_FORMAT_UNDEFINED, -1, "Exif.GPSInfo.GPSAreaInformation", nullptr, nullptr },
466 { 0x001d, EXIF_FORMAT_RATIONAL_UNSIGNED, 3, "Exif.GPSInfo.GPSDateStamp", nullptr, nullptr },
467 { 0x001e, EXIF_FORMAT_SHORT, -1, "Exif.GPSInfo.GPSDifferential", nullptr, nullptr },
472 ExifMarker ExifUnknownMarkersList[] = {
473 { 0x0000, EXIF_FORMAT_UNKNOWN, 0, "unknown", nullptr, nullptr },
474 { 0x0000, EXIF_FORMAT_BYTE_UNSIGNED, -1, "unknown", nullptr, nullptr },
475 { 0x0000, EXIF_FORMAT_STRING, -1, "unknown", nullptr, nullptr },
476 { 0x0000, EXIF_FORMAT_SHORT_UNSIGNED, -1, "unknown", nullptr, nullptr },
477 { 0x0000, EXIF_FORMAT_LONG_UNSIGNED, -1, "unknown", nullptr, nullptr },
478 { 0x0000, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "unknown", nullptr, nullptr },
479 { 0x0000, EXIF_FORMAT_BYTE, -1, "unknown", nullptr, nullptr },
480 { 0x0000, EXIF_FORMAT_UNDEFINED, -1, "unknown", nullptr, nullptr },
481 { 0x0000, EXIF_FORMAT_SHORT, -1, "unknown", nullptr, nullptr },
482 { 0x0000, EXIF_FORMAT_LONG, -1, "unknown", nullptr, nullptr },
483 { 0x0000, EXIF_FORMAT_RATIONAL, -1, "unknown", nullptr, nullptr },
484 { 0x0000, EXIF_FORMAT_FLOAT, -1, "unknown", nullptr, nullptr },
485 { 0x0000, EXIF_FORMAT_DOUBLE, -1, "unknown", nullptr, nullptr },
488 static const ExifMarker *exif_marker_from_tag(guint16 tag, const ExifMarker *list);
491 *-----------------------------------------------------------------------------
493 *-----------------------------------------------------------------------------
496 ExifItem *exif_item_new(ExifFormatType format, guint tag,
497 guint elements, const ExifMarker *marker)
501 item = g_new0(ExifItem, 1);
502 item->format = format;
504 item->marker = marker;
505 item->elements = elements;
509 case EXIF_FORMAT_UNKNOWN:
510 /* unknown, data is NULL */
513 case EXIF_FORMAT_BYTE_UNSIGNED:
514 item->data_len = sizeof(gchar) * elements;
516 case EXIF_FORMAT_STRING:
517 item->data_len = sizeof(gchar) * elements;
519 case EXIF_FORMAT_SHORT_UNSIGNED:
520 item->data_len = sizeof(guint16) * elements;
522 case EXIF_FORMAT_LONG_UNSIGNED:
523 item->data_len = sizeof(guint32) * elements;
525 case EXIF_FORMAT_RATIONAL_UNSIGNED:
526 item->data_len = sizeof(ExifRational) * elements;
528 case EXIF_FORMAT_BYTE:
529 item->data_len = sizeof(gchar) * elements;
531 case EXIF_FORMAT_UNDEFINED:
532 item->data_len = sizeof(gchar) * elements;
534 case EXIF_FORMAT_SHORT:
535 item->data_len = sizeof(gint16) * elements;
537 case EXIF_FORMAT_LONG:
538 item->data_len = sizeof(gint32) * elements;
540 case EXIF_FORMAT_RATIONAL:
541 item->data_len = sizeof(ExifRational) * elements;
543 case EXIF_FORMAT_FLOAT:
544 item->data_len = sizeof(float) * elements;
546 case EXIF_FORMAT_DOUBLE:
547 item->data_len = sizeof(gdouble) * elements;
551 item->data = g_malloc0(item->data_len);
556 static void exif_item_free(ExifItem *item)
564 gchar *exif_item_get_tag_name(ExifItem *item)
566 if (!item || !item->marker) return nullptr;
567 return g_strdup(item->marker->key);
570 guint exif_item_get_tag_id(ExifItem *item)
576 guint exif_item_get_elements(ExifItem *item)
579 return item->elements;
582 gchar *exif_item_get_data(ExifItem *item, guint *data_len)
585 *data_len = item->data_len;
586 #if GLIB_CHECK_VERSION(2,68,0)
587 return static_cast<gchar*>(g_memdup2(item->data, item->data_len));
589 return static_cast<gchar*>(g_memdup(item->data, item->data_len));
593 guint exif_item_get_format_id(ExifItem *item)
595 if (!item) return EXIF_FORMAT_UNKNOWN;
600 gchar *exif_item_get_description(ExifItem *item)
602 if (!item || !item->marker) return nullptr;
603 return g_strdup(_(item->marker->description));
606 const gchar *exif_item_get_format_name(ExifItem *item, gboolean brief)
608 if (!item || !item->marker) return nullptr;
609 return (brief) ? ExifFormatList[item->format].short_name : ExifFormatList[item->format].description;
612 static GString *string_append_raw_bytes(GString *string, gpointer data, gint ne)
616 for (i = 0 ; i < ne; i++)
618 guchar c = (static_cast<gchar *>(data))[i];
619 if (c < 32 || c > 127) c = '.';
620 g_string_append_printf(string, "%c", c);
622 string = g_string_append(string, " : ");
623 for (i = 0 ; i < ne; i++)
641 g_string_append_printf(string, "%s%02x", spacer, (static_cast<gchar *>(data))[i]);
648 gchar *exif_text_list_find_value(ExifTextList *list, guint value)
650 gchar *result = nullptr;
654 while (!result && list[i].value >= 0)
656 if (value == static_cast<guint>(list[i].value)) result = g_strdup(_(list[i].description));
659 if (!result) result = g_strdup_printf("%d (%s)", value, _("unknown"));
666 *-------------------------------------------------------------------
668 *-------------------------------------------------------------------
671 /* note: the align_buf is used to avoid alignment issues (on sparc) */
673 guint16 exif_byte_get_int16(guchar *f, ExifByteOrder bo)
677 memcpy(&align_buf, f, sizeof(guint16));
679 if (bo == EXIF_BYTE_ORDER_INTEL)
680 return GUINT16_FROM_LE(align_buf);
682 return GUINT16_FROM_BE(align_buf);
685 guint32 exif_byte_get_int32(guchar *f, ExifByteOrder bo)
689 memcpy(&align_buf, f, sizeof(guint32));
691 if (bo == EXIF_BYTE_ORDER_INTEL)
692 return GUINT32_FROM_LE(align_buf);
694 return GUINT32_FROM_BE(align_buf);
697 void exif_byte_put_int16(guchar *f, guint16 n, ExifByteOrder bo)
701 if (bo == EXIF_BYTE_ORDER_INTEL)
703 align_buf = GUINT16_TO_LE(n);
707 align_buf = GUINT16_TO_BE(n);
710 memcpy(f, &align_buf, sizeof(guint16));
713 void exif_byte_put_int32(guchar *f, guint32 n, ExifByteOrder bo)
717 if (bo == EXIF_BYTE_ORDER_INTEL)
719 align_buf = GUINT32_TO_LE(n);
723 align_buf = GUINT32_TO_BE(n);
726 memcpy(f, &align_buf, sizeof(guint32));
731 *-------------------------------------------------------------------
733 *-------------------------------------------------------------------
736 static const ExifMarker *exif_marker_from_tag(guint16 tag, const ExifMarker *list)
740 if (!list) return nullptr;
742 while (list[i].tag != 0 && list[i].tag != tag)
747 return (list[i].tag == 0 ? nullptr : &list[i]);
750 static void rational_from_data(ExifRational *r, gpointer src, ExifByteOrder bo)
752 r->num = exif_byte_get_int32(static_cast<guchar *>(src), bo);
753 r->den = exif_byte_get_int32(static_cast<guchar *>(src) + sizeof(guint32), bo);
756 /* src_format and item->format must be compatible
757 * and not overrun src or item->data.
759 void exif_item_copy_data(ExifItem *item, gpointer src, guint len,
760 ExifFormatType src_format, ExifByteOrder bo)
767 bs = ExifFormatList[item->format].size;
772 ExifFormatList[src_format].size * ne > len)
774 gchar *tag = exif_item_get_tag_name(item);
775 log_printf("exif tag %s data size mismatch\n", tag);
780 switch (item->format)
782 case EXIF_FORMAT_UNKNOWN:
784 case EXIF_FORMAT_BYTE_UNSIGNED:
785 case EXIF_FORMAT_BYTE:
786 case EXIF_FORMAT_UNDEFINED:
787 memcpy(dest, src, len);
789 case EXIF_FORMAT_STRING:
790 memcpy(dest, src, len);
791 /* string is NULL terminated, make sure this is true */
792 if ((static_cast<gchar *>(dest))[len - 1] != '\0') (static_cast<gchar *>(dest))[len - 1] = '\0';
794 case EXIF_FORMAT_SHORT_UNSIGNED:
795 case EXIF_FORMAT_SHORT:
796 for (i = 0; i < ne; i++)
798 (static_cast<guint16 *>(dest))[i] = exif_byte_get_int16(static_cast<guchar *>(src) + i * bs, bo);
801 case EXIF_FORMAT_LONG_UNSIGNED:
802 case EXIF_FORMAT_LONG:
803 if (src_format == EXIF_FORMAT_SHORT_UNSIGNED ||
804 src_format == EXIF_FORMAT_SHORT)
806 /* a short fits into a long, so allow it */
809 ss = ExifFormatList[src_format].size;
810 for (i = 0; i < ne; i++)
812 (static_cast<gint32 *>(dest))[i] =
813 static_cast<gint32>(exif_byte_get_int16(static_cast<guchar *>(src) + i * ss, bo));
818 for (i = 0; i < ne; i++)
820 (static_cast<gint32 *>(dest))[i] =
821 exif_byte_get_int32(static_cast<guchar *>(src) + i * bs, bo);
825 case EXIF_FORMAT_RATIONAL_UNSIGNED:
826 case EXIF_FORMAT_RATIONAL:
827 for (i = 0; i < ne; i++)
829 rational_from_data(&(static_cast<ExifRational *>(dest))[i], static_cast<guchar *>(src) + i * bs, bo);
832 case EXIF_FORMAT_FLOAT:
833 for (i = 0; i < ne; i++)
835 (static_cast<float *>(dest))[i] = exif_byte_get_int32(static_cast<guchar *>(src) + i * bs, bo);
838 case EXIF_FORMAT_DOUBLE:
839 for (i = 0; i < ne; i++)
843 rational_from_data(&r, static_cast<guchar *>(src) + i * bs, bo);
844 if (r.den) (static_cast<gdouble *>(dest))[i] = static_cast<gdouble>(r.num) / r.den;
850 static gint exif_parse_IFD_entry(ExifData *exif, guchar *tiff, guint offset,
851 guint size, ExifByteOrder bo,
853 const ExifMarker *list)
861 const ExifMarker *marker;
864 tag = exif_byte_get_int16(tiff + offset + EXIF_TIFD_OFFSET_TAG, bo);
865 format = exif_byte_get_int16(tiff + offset + EXIF_TIFD_OFFSET_FORMAT, bo);
866 count = exif_byte_get_int32(tiff + offset + EXIF_TIFD_OFFSET_COUNT, bo);
867 data_val = exif_byte_get_int32(tiff + offset + EXIF_TIFD_OFFSET_DATA, bo);
869 /* Check tag type. If it does not match, either the format is wrong,
870 * either it is a unknown tag; so it is not really an error.
872 marker = exif_marker_from_tag(tag, list);
875 if (format >= EXIF_FORMAT_COUNT)
877 log_printf("warning: exif tag 0x%4x has invalid format %d\n", tag, format);
880 /* allow non recognized tags to be displayed */
881 marker = &ExifUnknownMarkersList[format];
883 if (marker->format != format)
885 /* Some cameras got mixed up signed/unsigned_rational
886 * eg KODAK DC4800 on object_distance tag
888 * FIXME: what exactly is this test trying to do?
889 * ok, so this test is to allow the case of swapped signed/unsigned mismatch to leak through?
891 if ((marker->format != EXIF_FORMAT_RATIONAL_UNSIGNED || format != EXIF_FORMAT_RATIONAL) &&
892 (marker->format != EXIF_FORMAT_RATIONAL || format != EXIF_FORMAT_RATIONAL_UNSIGNED) &&
893 /* short fits into a long so allow this mismatch
894 * as well (some tags allowed to be unsigned short _or_ unsigned long)
896 (marker->format != EXIF_FORMAT_LONG_UNSIGNED || format != EXIF_FORMAT_SHORT_UNSIGNED) )
898 if (format < EXIF_FORMAT_COUNT)
900 log_printf("warning: exif tag %s format mismatch, found %s exif spec requests %s\n",
901 marker->key, ExifFormatList[format].short_name,
902 ExifFormatList[marker->format].short_name);
906 log_printf("warning: exif tag %s format mismatch, found unknown id %d exif spec requests %d (%s)\n",
907 marker->key, format, marker->format,
908 ExifFormatList[marker->format].short_name);
914 /* Where is the data, is it available?
916 if (marker->components > 0 && static_cast<guint>(marker->components) != count)
918 log_printf("warning: exif tag %s has %d elements, exif spec requests %d\n",
919 marker->key, count, marker->components);
922 data_length = ExifFormatList[marker->format].size * count;
925 data_offset = data_val;
926 if (size < data_offset || size < data_offset + data_length)
928 log_printf("warning: exif tag %s data will overrun end of file, ignored.\n", marker->key);
934 data_offset = offset + EXIF_TIFD_OFFSET_DATA;
937 item = exif_item_new(marker->format, tag, count, marker);
938 exif_item_copy_data(item, tiff + data_offset, data_length, static_cast<ExifFormatType>(format), bo);
939 exif->items = g_list_prepend(exif->items, item);
941 if (list == ExifKnownMarkersList)
946 exif_parse_IFD_table(exif, tiff, data_val, size, bo, level + 1, list);
949 exif_parse_IFD_table(exif, tiff, data_val, size, bo, level + 1, ExifKnownGPSInfoMarkersList);
951 case TAG_EXIFMAKERNOTE:
952 format_exif_makernote_parse(exif, tiff, data_val, size, bo);
960 gint exif_parse_IFD_table(ExifData *exif,
961 guchar *tiff, guint offset,
962 guint size, ExifByteOrder bo,
964 const ExifMarker *list)
969 /* limit damage from infinite loops */
970 if (level > EXIF_TIFF_MAX_LEVELS) return -1;
972 /* We should be able to read number of entries in IFD0) */
973 if (size < offset + 2) return -1;
975 count = exif_byte_get_int16(tiff + offset, bo);
978 /* Entries and next IFD offset must be readable */
979 if (size < offset + count * EXIF_TIFD_SIZE + 4) return -1;
981 for (i = 0; i < count; i++)
983 exif_parse_IFD_entry(exif, tiff, offset + i * EXIF_TIFD_SIZE, size, bo, level, list);
990 *-------------------------------------------------------------------
992 *-------------------------------------------------------------------
995 gint exif_tiff_directory_offset(guchar *data, const guint len,
996 guint *offset, ExifByteOrder *bo)
998 if (len < 8) return FALSE;
1000 if (memcmp(data, "II", 2) == 0)
1002 *bo = EXIF_BYTE_ORDER_INTEL;
1004 else if (memcmp(data, "MM", 2) == 0)
1006 *bo = EXIF_BYTE_ORDER_MOTOROLA;
1013 if (exif_byte_get_int16(data + 2, *bo) != 0x002A)
1018 *offset = exif_byte_get_int32(data + 4, *bo);
1020 return (*offset < len);
1023 gint exif_tiff_parse(ExifData *exif, guchar *tiff, guint size, ExifMarker *list)
1028 if (!exif_tiff_directory_offset(tiff, size, &offset, &bo)) return -1;
1030 return exif_parse_IFD_table(exif, tiff, offset, size, bo, 0, list);
1035 *-------------------------------------------------------------------
1037 *-------------------------------------------------------------------
1040 /* jpeg container format:
1041 all data markers start with 0XFF
1042 2 byte long file start and end markers: 0xFFD8(SOI) and 0XFFD9(EOI)
1043 4 byte long data segment markers in format: 0xFFTTSSSSNNN...
1044 FF: 1 byte standard marker identifier
1045 TT: 1 byte data type
1046 SSSS: 2 bytes in Motorola byte alignment for length of the data.
1047 This value includes these 2 bytes in the count, making actual
1048 length of NN... == SSSS - 2.
1049 NNN.: the data in this segment
1051 static ExifMarker jpeg_color_marker = { 0x8773, EXIF_FORMAT_UNDEFINED, -1, "Exif.Image.InterColorProfile", nullptr, nullptr };
1053 void exif_add_jpeg_color_profile(ExifData *exif, guchar *cp_data, guint cp_length)
1055 ExifItem *item = exif_item_new(jpeg_color_marker.format, jpeg_color_marker.tag, 1,
1056 &jpeg_color_marker);
1058 item->data = cp_data;
1059 item->elements = cp_length;
1060 item->data_len = cp_length;
1061 exif->items = g_list_prepend(exif->items, item);
1065 static gint exif_jpeg_parse(ExifData *exif,
1066 guchar *data, guint size,
1069 guint seg_offset = 0;
1070 guint seg_length = 0;
1074 memcmp(data, "\xFF\xD8", 2) != 0)
1079 if (jpeg_segment_find(data, size, JPEG_MARKER_APP1,
1081 &seg_offset, &seg_length))
1083 res = exif_tiff_parse(exif, data + seg_offset + 6, seg_length - 6, list);
1086 if (exif_jpeg_parse_color(exif, data, size))
1094 guchar *exif_get_color_profile(ExifData *exif, guint *data_len)
1096 ExifItem *prof_item = exif_get_item(exif, "Exif.Image.InterColorProfile");
1097 if (prof_item && exif_item_get_format_id(prof_item) == EXIF_FORMAT_UNDEFINED)
1098 return reinterpret_cast<guchar *>(exif_item_get_data(prof_item, data_len));
1103 gchar* exif_get_image_comment(FileData*)
1105 log_printf("%s", _("Can't get image comment: not compiled with Exiv2.\n"));
1106 return g_strdup("");
1109 void exif_set_image_comment(FileData*, const gchar*)
1111 log_printf("%s", _("Can't set image comment: not compiled with Exiv2.\n"));
1116 *-------------------------------------------------------------------
1118 *-------------------------------------------------------------------
1122 ExifItem *exif_get_first_item(ExifData *exif)
1126 auto ret = static_cast<ExifItem *>(exif->items->data);
1127 exif->current = exif->items->next;
1130 exif->current = nullptr;
1134 ExifItem *exif_get_next_item(ExifData *exif)
1138 auto ret = static_cast<ExifItem *>(exif->current->data);
1139 exif->current = exif->current->next;
1145 static gint map_file(const gchar *path, void **mapping, gint *size)
1150 fd = open(path, O_RDONLY);
1157 if (fstat(fd, &fs) == -1)
1166 *mapping = mmap(nullptr, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
1167 if (*mapping == MAP_FAILED)
1178 static gint unmap_file(gpointer mapping, gint size)
1180 if (munmap(mapping, size) == -1)
1189 ExifData *exif_get_original(ExifData *processed)
1194 void exif_free(ExifData *exif)
1198 g_list_free_full(exif->items, reinterpret_cast<GDestroyNotify>(exif_item_free));
1203 ExifData *exif_read(gchar *path, gchar *, GHashTable *)
1210 if (!path) return nullptr;
1212 pathl = path_from_utf8(path);
1213 if (map_file(pathl, &f, &size) == -1)
1220 exif = g_new0(ExifData, 1);
1221 exif->path = g_strdup(path);
1223 res = exif_jpeg_parse(exif, static_cast<guchar *>(f), size, ExifKnownMarkersList);
1226 res = exif_tiff_parse(exif, static_cast<guchar *>(f), size, ExifKnownMarkersList);
1231 FormatRawExifType exif_type;
1232 FormatRawExifParseFunc exif_parse_func;
1235 exif_type = format_raw_exif_offset(static_cast<guchar*>(f), size, &offset, &exif_parse_func);
1238 case FORMAT_RAW_EXIF_NONE:
1241 case FORMAT_RAW_EXIF_TIFF:
1242 res = exif_tiff_parse(exif, static_cast<guchar *>(f) + offset, size - offset,
1243 ExifKnownMarkersList);
1245 case FORMAT_RAW_EXIF_JPEG:
1246 res = exif_jpeg_parse(exif, static_cast<guchar *>(f) + offset, size - offset,
1247 ExifKnownMarkersList);
1249 case FORMAT_RAW_EXIF_IFD_II:
1250 case FORMAT_RAW_EXIF_IFD_MM:
1251 res = exif_parse_IFD_table(exif, static_cast<guchar *>(f), offset, size - offset,
1252 (exif_type == FORMAT_RAW_EXIF_IFD_II) ?
1253 EXIF_BYTE_ORDER_INTEL : EXIF_BYTE_ORDER_MOTOROLA,
1254 0, ExifKnownMarkersList);
1256 case FORMAT_RAW_EXIF_PROPRIETARY:
1257 if (exif_parse_func)
1259 res = exif_parse_func(static_cast<guchar *>(f) + offset, size - offset, exif);
1271 unmap_file(f, size);
1273 if (exif) exif->items = g_list_reverse(exif->items);
1278 ExifItem *exif_get_item(ExifData *exif, const gchar *key)
1282 if (!key) return nullptr;
1289 item = static_cast<ExifItem*>(work->data);
1291 if (item->marker->key && strcmp(key, item->marker->key) == 0) return item;
1296 #define EXIF_DATA_AS_TEXT_MAX_COUNT 16
1299 static gchar *exif_item_get_data_as_text_full(ExifItem *item, MetadataFormat format)
1301 const ExifMarker *marker;
1307 if (!item) return nullptr;
1309 marker = item->marker;
1310 if (!marker) return nullptr;
1313 ne = item->elements;
1314 if (ne > EXIF_DATA_AS_TEXT_MAX_COUNT) ne = EXIF_DATA_AS_TEXT_MAX_COUNT;
1315 string = g_string_new("");
1316 switch (item->format)
1318 case EXIF_FORMAT_UNKNOWN:
1320 case EXIF_FORMAT_BYTE_UNSIGNED:
1321 case EXIF_FORMAT_BYTE:
1322 case EXIF_FORMAT_UNDEFINED:
1323 if (ne == 1 && marker->list && format == METADATA_FORMATTED)
1328 if (item->format == EXIF_FORMAT_BYTE_UNSIGNED ||
1329 item->format == EXIF_FORMAT_UNDEFINED)
1331 val = (static_cast<guchar *>(data))[0];
1335 val = static_cast<guchar>((static_cast<gchar *>(data))[0]);
1338 result = exif_text_list_find_value(marker->list, static_cast<guint>(val));
1339 string = g_string_append(string, result);
1344 string = string_append_raw_bytes(string, data, ne);
1347 case EXIF_FORMAT_STRING:
1348 if (item->data) string = g_string_append(string, (gchar *)(item->data));
1350 case EXIF_FORMAT_SHORT_UNSIGNED:
1351 if (ne == 1 && marker->list && format == METADATA_FORMATTED)
1355 result = exif_text_list_find_value(marker->list, (static_cast<guint16 *>(data))[0]);
1356 string = g_string_append(string, result);
1359 else for (i = 0; i < ne; i++)
1361 g_string_append_printf(string, "%s%hd", (i > 0) ? ", " : "",
1362 (static_cast<guint16 *>(data))[i]);
1365 case EXIF_FORMAT_LONG_UNSIGNED:
1366 for (i = 0; i < ne; i++)
1368 g_string_append_printf(string, "%s%ld", (i > 0) ? ", " : "",
1369 static_cast<gulong>((static_cast<guint32 *>(data))[i]));
1372 case EXIF_FORMAT_RATIONAL_UNSIGNED:
1373 for (i = 0; i < ne; i++)
1377 r = &(static_cast<ExifRational *>(data))[i];
1378 g_string_append_printf(string, "%s%ld/%ld", (i > 0) ? ", " : "",
1379 static_cast<gulong>(r->num), static_cast<gulong>(r->den));
1382 case EXIF_FORMAT_SHORT:
1383 for (i = 0; i < ne; i++)
1385 g_string_append_printf(string, "%s%hd", (i > 0) ? ", " : "",
1386 (static_cast<gint16 *>(data))[i]);
1389 case EXIF_FORMAT_LONG:
1390 for (i = 0; i < ne; i++)
1392 g_string_append_printf(string, "%s%ld", (i > 0) ? ", " : "",
1393 static_cast<glong>((static_cast<gint32 *>(data))[i]));
1396 case EXIF_FORMAT_RATIONAL:
1397 for (i = 0; i < ne; i++)
1401 r = &(static_cast<ExifRational *>(data))[i];
1402 g_string_append_printf(string, "%s%ld/%ld", (i > 0) ? ", " : "",
1403 static_cast<glong>(r->num), static_cast<glong>(r->den));
1406 case EXIF_FORMAT_FLOAT:
1407 for (i = 0; i < ne; i++)
1409 g_string_append_printf(string, "%s%f", (i > 0) ? ", " : "",
1410 (static_cast<float *>(data))[i]);
1413 case EXIF_FORMAT_DOUBLE:
1414 for (i = 0; i < ne; i++)
1416 g_string_append_printf(string, "%s%f", (i > 0) ? ", " : "",
1417 (static_cast<gdouble *>(data))[i]);
1422 if (item->elements > EXIF_DATA_AS_TEXT_MAX_COUNT &&
1423 item->format != EXIF_FORMAT_STRING)
1425 g_string_append(string, " ...");
1428 return g_string_free(string, FALSE);
1431 gchar *exif_item_get_string(ExifItem *item, gint)
1433 return exif_item_get_data_as_text_full(item, METADATA_PLAIN);
1436 gchar *exif_item_get_data_as_text(ExifItem *item, ExifData *)
1438 return exif_item_get_data_as_text_full(item, METADATA_FORMATTED);
1441 gint exif_item_get_integer(ExifItem *item, gint *value)
1443 if (!item) return FALSE;
1444 if (!item->elements) return FALSE;
1446 switch (item->format)
1448 case EXIF_FORMAT_SHORT:
1449 *value = static_cast<gint>((static_cast<gint16 *>(item->data))[0]);
1452 case EXIF_FORMAT_SHORT_UNSIGNED:
1453 *value = static_cast<gint>((static_cast<guint16 *>(item->data))[0]);
1456 case EXIF_FORMAT_LONG:
1457 *value = static_cast<gint>((static_cast<gint32 *>(item->data))[0]);
1460 case EXIF_FORMAT_LONG_UNSIGNED: /**< @FIXME overflow possible */
1461 *value = static_cast<gint>((static_cast<guint32 *>(item->data))[0]);
1464 /* all other type return FALSE */
1471 ExifRational *exif_item_get_rational(ExifItem *item, gint *sign, guint n)
1473 if (!item) return nullptr;
1474 if (n >= item->elements) return nullptr;
1476 if (item->format == EXIF_FORMAT_RATIONAL ||
1477 item->format == EXIF_FORMAT_RATIONAL_UNSIGNED)
1479 if (sign) *sign = (item->format == EXIF_FORMAT_RATIONAL);
1480 return &(static_cast<ExifRational *>(item->data))[n];
1486 gchar *exif_get_tag_description_by_key(const gchar *key)
1490 if (!key) return nullptr;
1493 while (ExifKnownMarkersList[i].tag > 0)
1495 if (strcmp(key, ExifKnownMarkersList[i].key) == 0) return g_strdup(_(ExifKnownMarkersList[i].description));
1500 while (ExifKnownGPSInfoMarkersList[i].tag > 0)
1502 if (strcmp(key, ExifKnownGPSInfoMarkersList[i].key) == 0) return g_strdup(_(ExifKnownGPSInfoMarkersList[i].description));
1509 static void exif_write_item(FILE *f, ExifItem *item, ExifData *exif)
1513 text = exif_item_get_data_as_text(item, exif);
1516 gchar *tag = exif_item_get_tag_name(item);
1517 g_fprintf(f, "%4x %9s %30s %s\n", item->tag, ExifFormatList[item->format].short_name,
1524 void exif_write_data_list(ExifData *exif, FILE *f, gint human_readable_list)
1526 if (!f || !exif) return;
1528 g_fprintf(f, " tag format key value\n");
1529 g_fprintf(f, "----------------------------------------------------\n");
1531 if (human_readable_list)
1536 while (ExifFormattedList[i].key)
1540 text = exif_get_formatted_by_key(exif, ExifFormattedList[i].key, nullptr);
1543 g_fprintf(f, " %9s %30s %s\n", "string", ExifFormattedList[i].key, text);
1557 item = static_cast<ExifItem*>(work->data);
1560 exif_write_item(f, item, exif);
1563 g_fprintf(f, "----------------------------------------------------\n");
1566 gboolean exif_write(ExifData *)
1568 log_printf("Not compiled with EXIF write support\n");
1572 gboolean exif_write_sidecar(ExifData *, gchar *)
1574 log_printf("Not compiled with EXIF write support\n");
1579 gint exif_update_metadata(ExifData *, const gchar *, const GList *)
1584 GList *exif_get_metadata(ExifData *exif, const gchar *key, MetadataFormat format)
1589 if (!key) return nullptr;
1591 /* convert xmp key to exif key */
1592 if (strcmp(key, "Xmp.tiff.Orientation") == 0) key = "Exif.Image.Orientation";
1594 if (format == METADATA_FORMATTED)
1598 text = exif_get_formatted_by_key(exif, key, &key_valid);
1599 if (key_valid) return g_list_append(nullptr, text);
1602 item = exif_get_item(exif, key);
1603 if (!item) return nullptr;
1605 str = exif_item_get_data_as_text_full(item, format);
1607 if (!str) return nullptr;
1609 return g_list_append(nullptr, str);
1619 static GList *exif_unmap_list = nullptr;
1621 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint, gint)
1630 if (!exif) return nullptr;
1633 fd = open(path, O_RDONLY);
1641 if (fstat(fd, &st) == -1)
1646 map_len = st.st_size;
1647 map_data = static_cast<guchar *>(mmap(nullptr, map_len, PROT_READ, MAP_PRIVATE, fd, 0));
1650 if (map_data == MAP_FAILED)
1655 if (format_raw_img_exif_offsets(map_data, map_len, &offset, nullptr) && offset)
1659 DEBUG_1("%s: offset %u", path, offset);
1661 *data_len = map_len - offset;
1662 ud = g_new(UnmapData, 1);
1663 ud->ptr = map_data + offset;
1664 ud->map_data = map_data;
1665 ud->map_len = map_len;
1667 exif_unmap_list = g_list_prepend(exif_unmap_list, ud);
1671 munmap(map_data, map_len);
1676 void exif_free_preview(const guchar *buf)
1678 GList *work = exif_unmap_list;
1682 auto ud = static_cast<UnmapData *>(work->data);
1685 exif_unmap_list = g_list_remove_link(exif_unmap_list, work);
1691 g_assert_not_reached();
1698 using dummy_variable = int;
1700 /* not HAVE_EXIV2 */
1701 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */