6 * Raw NEF jpeg extraction based on nefextract.c by Joseph Heled,
7 * in addition nefextract.c is based on dcraw by Dave Coffin.
9 * This software is released under the GNU General Public License (GNU GPL).
10 * Please read the included file COPYING for more information.
11 * This software comes with no warranty of any kind, use at your own risk!
28 #include "format_nikon.h"
34 *-----------------------------------------------------------------------------
35 * Raw NEF embedded jpeg extraction for Nikon
36 *-----------------------------------------------------------------------------
39 static guint nikon_tiff_table(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
41 guint *image_offset, guint *jpeg_len);
44 static void nikon_tiff_entry(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
46 guint *image_offset, guint *image_length, guint *jpeg_start, guint *jpeg_len)
54 tag = exif_byte_get_int16(data + offset + EXIF_TIFD_OFFSET_TAG, bo);
55 type = exif_byte_get_int16(data + offset + EXIF_TIFD_OFFSET_FORMAT, bo);
56 count = exif_byte_get_int32(data + offset + EXIF_TIFD_OFFSET_COUNT, bo);
58 /* so far, we only care about tags with type long */
59 if (type != EXIF_FORMAT_LONG_UNSIGNED && type != EXIF_FORMAT_LONG) return;
61 seg_len = ExifFormatList[type].size * count;
64 segment = exif_byte_get_int32(data + offset + EXIF_TIFD_OFFSET_DATA, bo);
65 if (segment + seg_len > len) return;
69 segment = offset + EXIF_TIFD_OFFSET_DATA;
77 for (i = 0; i < count; i++)
81 subset = exif_byte_get_int32(data + segment + i * 4, bo);
82 nikon_tiff_table(data, len, subset, bo, level + 1, image_offset, image_length);
86 else if (tag == 0x201)
88 /* jpeg data start offset */
89 *jpeg_start = exif_byte_get_int32(data + segment, bo);
91 else if (tag == 0x202)
93 /* jpeg data length */
94 *jpeg_len = exif_byte_get_int32(data + segment, bo);
98 static guint nikon_tiff_table(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
100 guint *image_offset, guint *image_length)
104 guint jpeg_start = 0;
107 /* limit damage from infinite loops */
108 if (level > EXIF_TIFF_MAX_LEVELS) return 0;
110 if (len < offset + 2) return FALSE;
112 count = exif_byte_get_int16(data + offset, bo);
114 if (len < offset + count * EXIF_TIFD_SIZE + 4) return 0;
116 for (i = 0; i < count; i++)
118 nikon_tiff_entry(data, len, offset + i * EXIF_TIFD_SIZE, bo, level,
119 image_offset, image_length, &jpeg_start, &jpeg_len);
122 if (jpeg_start > 0 &&
123 jpeg_len > *image_length)
125 *image_offset = jpeg_start;
126 *image_length = jpeg_len;
129 return exif_byte_get_int32(data + offset + count * EXIF_TIFD_SIZE, bo);
132 gint format_nikon_raw(unsigned char *data, const guint len,
133 guint *image_offset, guint *exif_offset)
141 if (!exif_tiff_directory_offset(data, len, &offset, &bo)) return FALSE;
144 while (offset && level < EXIF_TIFF_MAX_LEVELS)
146 offset = nikon_tiff_table(data, len, offset, bo, 0, &i_off, &i_len);
152 if (image_offset) *image_offset = i_off;
161 *-----------------------------------------------------------------------------
162 * EXIF Makernote for Nikon
163 *-----------------------------------------------------------------------------
166 static ExifTextList NikonTagQuality[]= {
171 { 5, "SXGA normal" },
173 { 7, "XGA basic (?)" },
174 { 8, "XGA normal (?)" },
175 { 9, "XGA fine (?)" },
176 { 10, "UXGA basic" },
177 { 11, "UXGA normal" },
182 static ExifTextList NikonTagColorMode[]= {
188 static ExifTextList NikonTagImgAdjust[]= {
197 static ExifTextList NikonTagISOSensitivity[]= {
205 static ExifTextList NikonTagWhiteBalance[]= {
209 { 3, "incandescent" },
210 { 4, "fluorescence" },
216 static ExifTextList NikonTagConverter[]= {
223 static ExifTextList NikonTag[]= {
230 static ExifMarker NikonExifMarkersList1[] = {
231 { 0x0002, EXIF_FORMAT_STRING, 6, "Nikon.unknown", NULL, NULL },
232 { 0x0003, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Quality", "Quality", NikonTagQuality },
233 { 0x0004, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ColorMode", "Color mode", NikonTagColorMode },
234 { 0x0005, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ImageAdjustment",
235 "Image adjustment", NikonTagImgAdjust },
236 { 0x0006, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ISOSensitivity",
237 "ISO sensitivity", NikonTagISOSensitivity },
238 { 0x0007, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.WhiteBalance", "White balance",NikonTagWhiteBalance },
239 { 0x0008, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Nikon.Focus", "Focus", NULL },
240 { 0x000a, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Nikon.DigitalZoom", "Digital zoom", NULL },
241 { 0x000b, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Converter", "Converter", NikonTagConverter },
245 static ExifTextList NikonTag2FlashComp[]= {
266 static ExifTextList NikonTag2LensType[]= {
269 { 2, "AF-D or AF-s" },
275 static ExifTextList NikonTag2FlashUsed[]= {
277 { 4, "unit unknown" },
284 static ExifTextList NikonTagi2Saturation[]= {
285 { -3, "black and white" },
295 static ExifMarker NikonExifMarkersList2[] = {
296 { 0x0002, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Nikon.ISOSpeed", "ISO speed", NULL },
297 { 0x0003, EXIF_FORMAT_STRING, -1, "Nikon.ColorMode", "Color mode", NULL },
298 { 0x0004, EXIF_FORMAT_STRING, -1, "Nikon.Quality", "Quality", NULL },
299 { 0x0005, EXIF_FORMAT_STRING, -1, "Nikon.WhiteBalance", "White balance",NULL },
300 { 0x0006, EXIF_FORMAT_STRING, -1, "Nikon.Sharpening", "Sharpening", NULL },
301 { 0x0007, EXIF_FORMAT_STRING, -1, "Nikon.FocusMode", "Focus mode", NULL },
302 { 0x0008, EXIF_FORMAT_STRING, -1, "Nikon.FlashSetting", "Flash setting",NULL },
303 { 0x0009, EXIF_FORMAT_STRING, -1, "Nikon.AutoFlashMode","Auto flash mode",NULL },
304 { 0x000b, EXIF_FORMAT_SHORT, 1, "Nikon.WhiteBalanceBias",
305 "White balance bias value", NULL },
306 /* { 0x000c, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.WhiteBalanceRB",
307 "White balance red/blue coefficients", NULL }, */
308 /* { 0x000f, EXIF_FORMAT_STRING, -1, "Nikon.ISOSelect", "ISO selection",NULL }, */
309 { 0x0012, EXIF_FORMAT_UNDEFINED, 4, "Nikon.FlashCompensation",
310 "Flash compensation", NikonTag2FlashComp },
311 { 0x0013, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Nikon.ISOSpeedRequest",
312 "ISO speed requested", NULL },
313 { 0x0016, EXIF_FORMAT_SHORT_UNSIGNED, 4, "Nikon.CornerCoord",
314 "Corner coordinates", NULL },
315 { 0x0018, EXIF_FORMAT_UNDEFINED, 4, "Nikon.FlashBracketCompensation",
316 "Flash bracket compensation", NikonTag2FlashComp },
317 { 0x0019, EXIF_FORMAT_RATIONAL, 1, "Nikon.AEBracketCompensation",
318 "AE bracket compensation", NULL },
319 { 0x0080, EXIF_FORMAT_STRING, -1, "Nikon.ImageAdjustment",
320 "Image adjustment", NULL },
321 { 0x0081, EXIF_FORMAT_STRING, -1, "Nikon.Contrast", "Contrast", NULL },
322 { 0x0082, EXIF_FORMAT_STRING, -1, "Nikon.AuxLens", "Aux lens adapter", NULL },
323 { 0x0083, EXIF_FORMAT_BYTE_UNSIGNED, -1, "Nikon.LensType", "Lens type", NikonTag2LensType },
324 { 0x0084, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Nikon.LensFocalLength",
325 "Lens min/max focal length and aperture", NULL },
326 { 0x0085, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ManualFocusDistance",
327 "Manual focus distance", NULL },
328 { 0x0086, EXIF_FORMAT_RATIONAL, 1, "Nikon.DigitalZoomFactor",
329 "Digital zoom factor", NULL },
330 { 0x0087, EXIF_FORMAT_BYTE_UNSIGNED, 1, "Nikon.FlashUsed", "Flash used", NikonTag2FlashUsed },
331 { 0x0088, EXIF_FORMAT_UNDEFINED, 4, "Nikon.AutoFocusArea","Auto focus area",NULL },
332 /* { 0x0089, EXIF_FORMAT_SHORT_UNSIGNED, -1, "Nikon.Bracket/ShootingMode", NULL, NULL }, */
333 { 0x008d, EXIF_FORMAT_STRING, -1, "Nikon.ColorMode", "Color mode", NULL },
334 { 0x008f, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.SceneMode", "Scene mode", NULL },
335 { 0x0090, EXIF_FORMAT_STRING, -1, "Nikon.LightingType", "Lighting type",NULL },
336 { 0x0092, EXIF_FORMAT_SHORT, 1, "Nikon.HueAdjust", "Hue adjustment",NULL },
337 /* { 0x0094, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Saturation", "Saturation", NikonTag2Saturation }, */
338 { 0x0095, EXIF_FORMAT_STRING, -1, "Nikon.NoiseReduction", "Noise reduction", NULL },
339 { 0x00a7, EXIF_FORMAT_LONG_UNSIGNED, 1, "Nikon.ShutterCount", "Shutter release count", NULL },
340 { 0x00a9, EXIF_FORMAT_STRING, -1, "Nikon.ImageOptimization", "Image optimization", NULL },
341 { 0x00aa, EXIF_FORMAT_STRING, -1, "Nikon.Saturation", "Saturation", NULL },
342 { 0x00ab, EXIF_FORMAT_STRING, -1, "Nikon.DigitalVariProg", "Digital Vari-program", NULL },
346 static ExifTextList NikonAFPoint[]= {
356 gint format_nikon_makernote(ExifData *exif, unsigned char *tiff, guint offset,
357 guint size, ExifByteOrder bo)
362 if (offset + 8 + 4 >= size) return FALSE;
364 data = tiff + offset;
366 /* Nikon tag format 1 */
367 if (memcmp(data, "Nikon\x00\x01\x00", 8) == 0)
369 if (exif_parse_IFD_table(exif, tiff, offset + 8, size,
370 bo, 0, NikonExifMarkersList1) != 0)
377 /* Nikon tag format 2 uses Embedded tiff header */
378 if (memcmp(data, "Nikon\x00\x02\x00\x00\x00", 10) == 0 ||
379 memcmp(data, "Nikon\x00\x02\x10\x00\x00", 10) == 0)
383 tiff_header = offset + 10;
384 if (exif_tiff_parse(exif, tiff + tiff_header, size - tiff_header,
385 NikonExifMarkersList2) != 0)
390 /* Nikon tag format 3 uses format 2 tags without "Nikon" and tiff header */
391 else if (exif_parse_IFD_table(exif, tiff, offset, size,
392 bo, 0, NikonExifMarkersList2) != 0)
397 item = exif_get_item(exif, "Nikon.AutoFocusArea");
398 if (item && item->data_len == 4 * sizeof(guchar))
400 static ExifMarker marker = { 0x0088, EXIF_FORMAT_STRING, -1,
401 "Nikon.AutoFocusPoint", "Auto focus point", NULL };
402 guchar *array = item->data;
406 text = exif_text_list_find_value(NikonAFPoint, (gint)array[1]);
407 l = strlen(text) + 1;
409 item = exif_item_new(marker.format, marker.tag, l, &marker);
410 memcpy(item->data, text, l);
414 exif->items = g_list_prepend(exif->items, item);
417 item = exif_get_item(exif, "Nikon.ISOSpeed");
418 if (item && item->data_len == 2 * 2)
420 static ExifMarker marker = { 0x0002, EXIF_FORMAT_SHORT_UNSIGNED, 1,
421 "ISOSpeedRatings", "ISO speed", NULL };
424 shadow = exif_item_new(marker.format, marker.tag, 1, &marker);
425 memcpy(shadow->data, item->data + 2, 2);
427 exif->items = g_list_prepend(exif->items, shadow);
430 item = exif_get_item(exif, "Nikon.WhiteBalance");
431 if (item && item->format == EXIF_FORMAT_STRING)
433 static ExifMarker marker = { 0x0005, EXIF_FORMAT_STRING, -1,
434 "LightSource", "Light source", NULL };
437 shadow = exif_item_new(marker.format, marker.tag, item->data_len, &marker);
438 memcpy(shadow->data, item->data, item->data_len);
440 exif->items = g_list_prepend(exif->items, shadow);