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!
29 #include "format_nikon.h"
35 *-----------------------------------------------------------------------------
36 * Raw NEF embedded jpeg extraction for Nikon
37 *-----------------------------------------------------------------------------
40 static guint nikon_tiff_table(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
42 guint *image_offset, guint *jpeg_len);
45 static void nikon_tiff_entry(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
47 guint *image_offset, guint *image_length, guint *jpeg_start, guint *jpeg_len)
55 tag = exif_byte_get_int16(data + offset + EXIF_TIFD_OFFSET_TAG, bo);
56 type = exif_byte_get_int16(data + offset + EXIF_TIFD_OFFSET_FORMAT, bo);
57 count = exif_byte_get_int32(data + offset + EXIF_TIFD_OFFSET_COUNT, bo);
59 /* so far, we only care about tags with type long */
60 if (type != EXIF_FORMAT_LONG_UNSIGNED && type != EXIF_FORMAT_LONG) return;
62 seg_len = ExifFormatList[type].size * count;
65 segment = exif_byte_get_int32(data + offset + EXIF_TIFD_OFFSET_DATA, bo);
66 if (segment + seg_len > len) return;
70 segment = offset + EXIF_TIFD_OFFSET_DATA;
78 for (i = 0; i < count; i++)
82 subset = exif_byte_get_int32(data + segment + i * 4, bo);
83 nikon_tiff_table(data, len, subset, bo, level + 1, image_offset, image_length);
87 else if (tag == 0x201)
89 /* jpeg data start offset */
90 *jpeg_start = exif_byte_get_int32(data + segment, bo);
92 else if (tag == 0x202)
94 /* jpeg data length */
95 *jpeg_len = exif_byte_get_int32(data + segment, bo);
99 static guint nikon_tiff_table(unsigned char *data, const guint len, guint offset, ExifByteOrder bo,
101 guint *image_offset, guint *image_length)
105 guint jpeg_start = 0;
108 /* limit damage from infinite loops */
109 if (level > EXIF_TIFF_MAX_LEVELS) return 0;
111 if (len < offset + 2) return FALSE;
113 count = exif_byte_get_int16(data + offset, bo);
115 if (len < offset + count * EXIF_TIFD_SIZE + 4) return 0;
117 for (i = 0; i < count; i++)
119 nikon_tiff_entry(data, len, offset + i * EXIF_TIFD_SIZE, bo, level,
120 image_offset, image_length, &jpeg_start, &jpeg_len);
123 if (jpeg_start > 0 &&
124 jpeg_len > *image_length)
126 *image_offset = jpeg_start;
127 *image_length = jpeg_len;
130 return exif_byte_get_int32(data + offset + count * EXIF_TIFD_SIZE, bo);
133 gint format_nikon_raw(unsigned char *data, const guint len,
134 guint *image_offset, guint *exif_offset)
142 if (!exif_tiff_directory_offset(data, len, &offset, &bo)) return FALSE;
145 while (offset && level < EXIF_TIFF_MAX_LEVELS)
147 offset = nikon_tiff_table(data, len, offset, bo, 0, &i_off, &i_len);
153 if (image_offset) *image_offset = i_off;
162 *-----------------------------------------------------------------------------
163 * EXIF Makernote for Nikon
164 *-----------------------------------------------------------------------------
167 static ExifTextList NikonTagQuality[]= {
172 { 5, "SXGA normal" },
174 { 7, "XGA basic (?)" },
175 { 8, "XGA normal (?)" },
176 { 9, "XGA fine (?)" },
177 { 10, "UXGA basic" },
178 { 11, "UXGA normal" },
183 static ExifTextList NikonTagColorMode[]= {
189 static ExifTextList NikonTagImgAdjust[]= {
198 static ExifTextList NikonTagISOSensitivity[]= {
206 static ExifTextList NikonTagWhiteBalance[]= {
210 { 3, "incandescent" },
211 { 4, "fluorescence" },
217 static ExifTextList NikonTagConverter[]= {
224 static ExifTextList NikonTag[]= {
231 static ExifMarker NikonExifMarkersList1[] = {
232 { 0x0002, EXIF_FORMAT_STRING, 6, "Nikon.unknown", NULL, NULL },
233 { 0x0003, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Quality", "Quality", NikonTagQuality },
234 { 0x0004, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ColorMode", "Color mode", NikonTagColorMode },
235 { 0x0005, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ImageAdjustment",
236 "Image adjustment", NikonTagImgAdjust },
237 { 0x0006, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ISOSensitivity",
238 "ISO sensitivity", NikonTagISOSensitivity },
239 { 0x0007, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.WhiteBalance", "White balance",NikonTagWhiteBalance },
240 { 0x0008, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Nikon.Focus", "Focus", NULL },
241 { 0x000a, EXIF_FORMAT_RATIONAL_UNSIGNED, 1, "Nikon.DigitalZoom", "Digital zoom", NULL },
242 { 0x000b, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Converter", "Converter", NikonTagConverter },
246 static ExifTextList NikonTag2FlashComp[]= {
267 static ExifTextList NikonTag2LensType[]= {
270 { 2, "AF-D or AF-s" },
276 static ExifTextList NikonTag2FlashUsed[]= {
278 { 4, "unit unknown" },
285 static ExifTextList NikonTagi2Saturation[]= {
286 { -3, "black and white" },
296 static ExifMarker NikonExifMarkersList2[] = {
297 { 0x0002, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Nikon.ISOSpeed", "ISO speed", NULL },
298 { 0x0003, EXIF_FORMAT_STRING, -1, "Nikon.ColorMode", "Color mode", NULL },
299 { 0x0004, EXIF_FORMAT_STRING, -1, "Nikon.Quality", "Quality", NULL },
300 { 0x0005, EXIF_FORMAT_STRING, -1, "Nikon.WhiteBalance", "White balance",NULL },
301 { 0x0006, EXIF_FORMAT_STRING, -1, "Nikon.Sharpening", "Sharpening", NULL },
302 { 0x0007, EXIF_FORMAT_STRING, -1, "Nikon.FocusMode", "Focus mode", NULL },
303 { 0x0008, EXIF_FORMAT_STRING, -1, "Nikon.FlashSetting", "Flash setting",NULL },
304 { 0x0009, EXIF_FORMAT_STRING, -1, "Nikon.AutoFlashMode","Auto flash mode",NULL },
305 { 0x000b, EXIF_FORMAT_SHORT, 1, "Nikon.WhiteBalanceBias",
306 "White balance bias value", NULL },
307 /* { 0x000c, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.WhiteBalanceRB",
308 "White balance red/blue coefficients", NULL }, */
309 /* { 0x000f, EXIF_FORMAT_STRING, -1, "Nikon.ISOSelect", "ISO selection",NULL }, */
310 { 0x0012, EXIF_FORMAT_UNDEFINED, 4, "Nikon.FlashCompensation",
311 "Flash compensation", NikonTag2FlashComp },
312 { 0x0013, EXIF_FORMAT_SHORT_UNSIGNED, 2, "Nikon.ISOSpeedRequest",
313 "ISO speed requested", NULL },
314 { 0x0016, EXIF_FORMAT_SHORT_UNSIGNED, 4, "Nikon.CornerCoord",
315 "Corner coordinates", NULL },
316 { 0x0018, EXIF_FORMAT_UNDEFINED, 4, "Nikon.FlashBracketCompensation",
317 "Flash bracket compensation", NikonTag2FlashComp },
318 { 0x0019, EXIF_FORMAT_RATIONAL, 1, "Nikon.AEBracketCompensation",
319 "AE bracket compensation", NULL },
320 { 0x0080, EXIF_FORMAT_STRING, -1, "Nikon.ImageAdjustment",
321 "Image adjustment", NULL },
322 { 0x0081, EXIF_FORMAT_STRING, -1, "Nikon.Contrast", "Contrast", NULL },
323 { 0x0082, EXIF_FORMAT_STRING, -1, "Nikon.AuxLens", "Aux lens adapter", NULL },
324 { 0x0083, EXIF_FORMAT_BYTE_UNSIGNED, -1, "Nikon.LensType", "Lens type", NikonTag2LensType },
325 { 0x0084, EXIF_FORMAT_RATIONAL_UNSIGNED, -1, "Nikon.LensFocalLength",
326 "Lens min/max focal length and aperture", NULL },
327 { 0x0085, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.ManualFocusDistance",
328 "Manual focus distance", NULL },
329 { 0x0086, EXIF_FORMAT_RATIONAL, 1, "Nikon.DigitalZoomFactor",
330 "Digital zoom factor", NULL },
331 { 0x0087, EXIF_FORMAT_BYTE_UNSIGNED, 1, "Nikon.FlashUsed", "Flash used", NikonTag2FlashUsed },
332 { 0x0088, EXIF_FORMAT_UNDEFINED, 4, "Nikon.AutoFocusArea","Auto focus area",NULL },
333 /* { 0x0089, EXIF_FORMAT_SHORT_UNSIGNED, -1, "Nikon.Bracket/ShootingMode", NULL, NULL }, */
334 { 0x008d, EXIF_FORMAT_STRING, -1, "Nikon.ColorMode", "Color mode", NULL },
335 { 0x008f, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.SceneMode", "Scene mode", NULL },
336 { 0x0090, EXIF_FORMAT_STRING, -1, "Nikon.LightingType", "Lighting type",NULL },
337 { 0x0092, EXIF_FORMAT_SHORT, 1, "Nikon.HueAdjust", "Hue adjustment",NULL },
338 /* { 0x0094, EXIF_FORMAT_SHORT_UNSIGNED, 1, "Nikon.Saturation", "Saturation", NikonTag2Saturation }, */
339 { 0x0095, EXIF_FORMAT_STRING, -1, "Nikon.NoiseReduction", "Noise reduction", NULL },
340 { 0x00a7, EXIF_FORMAT_LONG_UNSIGNED, 1, "Nikon.ShutterCount", "Shutter release count", NULL },
341 { 0x00a9, EXIF_FORMAT_STRING, -1, "Nikon.ImageOptimization", "Image optimization", NULL },
342 { 0x00aa, EXIF_FORMAT_STRING, -1, "Nikon.Saturation", "Saturation", NULL },
343 { 0x00ab, EXIF_FORMAT_STRING, -1, "Nikon.DigitalVariProg", "Digital Vari-program", NULL },
347 static ExifTextList NikonAFPoint[]= {
357 gint format_nikon_makernote(ExifData *exif, unsigned char *tiff, guint offset,
358 guint size, ExifByteOrder bo)
363 if (offset + 8 + 4 >= size) return FALSE;
365 data = tiff + offset;
367 /* Nikon tag format 1 */
368 if (memcmp(data, "Nikon\x00\x01\x00", 8) == 0)
370 if (exif_parse_IFD_table(exif, tiff, offset + 8, size,
371 bo, 0, NikonExifMarkersList1) != 0)
378 /* Nikon tag format 2 uses Embedded tiff header */
379 if (memcmp(data, "Nikon\x00\x02\x00\x00\x00", 10) == 0 ||
380 memcmp(data, "Nikon\x00\x02\x10\x00\x00", 10) == 0)
384 tiff_header = offset + 10;
385 if (exif_tiff_parse(exif, tiff + tiff_header, size - tiff_header,
386 NikonExifMarkersList2) != 0)
391 /* Nikon tag format 3 uses format 2 tags without "Nikon" and tiff header */
392 else if (exif_parse_IFD_table(exif, tiff, offset, size,
393 bo, 0, NikonExifMarkersList2) != 0)
398 item = exif_get_item(exif, "Nikon.AutoFocusArea");
399 if (item && item->data_len == 4 * sizeof(guchar))
401 static ExifMarker marker = { 0x0088, EXIF_FORMAT_STRING, -1,
402 "Nikon.AutoFocusPoint", "Auto focus point", NULL };
403 guchar *array = item->data;
407 text = exif_text_list_find_value(NikonAFPoint, (gint)array[1]);
408 l = strlen(text) + 1;
410 item = exif_item_new(marker.format, marker.tag, l, &marker);
411 memcpy(item->data, text, l);
415 exif->items = g_list_prepend(exif->items, item);
418 item = exif_get_item(exif, "Nikon.ISOSpeed");
419 if (item && item->data_len == 2 * 2)
421 static ExifMarker marker = { 0x0002, EXIF_FORMAT_SHORT_UNSIGNED, 1,
422 "ISOSpeedRatings", "ISO speed", NULL };
425 shadow = exif_item_new(marker.format, marker.tag, 1, &marker);
426 memcpy(shadow->data, item->data + 2, 2);
428 exif->items = g_list_prepend(exif->items, shadow);
431 item = exif_get_item(exif, "Nikon.WhiteBalance");
432 if (item && item->format == EXIF_FORMAT_STRING)
434 static ExifMarker marker = { 0x0005, EXIF_FORMAT_STRING, -1,
435 "LightSource", "Light source", NULL };
438 shadow = exif_item_new(marker.format, marker.tag, item->data_len, &marker);
439 memcpy(shadow->data, item->data, item->data_len);
441 exif->items = g_list_prepend(exif->items, shadow);