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Recognize a few more tactical TIFF tags

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Přemysl Eric Janouch 2021-12-13 01:59:40 +01:00
parent 3ed23e423b
commit e161f77359
Signed by: p
GPG Key ID: A0420B94F92B9493
2 changed files with 14 additions and 0 deletions
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4
fastiv-io.c
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@ -1709,6 +1709,10 @@ open_libtiff(const gchar *data, gsize len, const gchar *path, GError **error)
// This is not possible with libtiff directly, because TIFFSetSubDirectory()
// requires an ImageLength tag that's missing, and TIFFReadCustomDirectory()
// takes a privately defined struct that cannot be omitted.
//
// TODO(p): Samsung Android DNGs also claim to be TIFF/EP, but use a smaller
// uncompressed YCbCr image. Apple ProRAW uses the new JPEG Compression (7),
// with a weird Orientation. It also uses that value for its raw data.
uint32_t subtype = 0;
uint16_t subifd_count = 0;
const uint64_t *subifd_offsets = NULL;

10
tools/info.h
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@ -87,6 +87,10 @@ u16le(const uint8_t *p)
// Exif Version 2.32 (2019)
// https://www.cipa.jp/e/std/std-sec.html
//
// Digital Negative (DNG) Specification 1.5.0.0 (2019)
// https://www.adobe.com/content/dam/acom/en/products/photoshop/pdfs
// /dng_spec_1.5.0.0.pdf
//
// libtiff is a mess, and the format is not particularly complicated.
// Exiv2 is senselessly copylefted, and cannot do much.
// libexif is only marginally better.
@ -560,7 +564,13 @@ static struct tiff_entry tiff_entries[] = {
{"Photoshop", 34377, NULL}, // Adobe XMP Specification Part 3 Table 12/39
{"Exif IFD Pointer", 34665, NULL}, // Exif 2.3
{"GPS Info IFD Pointer", 34853, NULL}, // Exif 2.3
{"TIFF/EP StandardID", 37398, NULL}, // ISO 12234 TIFF/EP image data format
{"ImageSourceData", 37724, NULL}, // Adobe Photoshop TIFF Technical Notes
{"DNGVersion", 50706, NULL}, // DNG 1.5.0.0
{"DNGBackwardVersion", 50707, NULL}, // DNG 1.5.0.0
{"UniqueCameraModel", 50708, NULL}, // DNG 1.5.0.0
{"LocalizedCameraModel", 50709, NULL}, // DNG 1.5.0.0
// TODO(p): Add more DNG tags that can be only in IFD0.
{}
};