Recognize a few more tactical TIFF tags
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@ -1709,6 +1709,10 @@ open_libtiff(const gchar *data, gsize len, const gchar *path, GError **error)
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// This is not possible with libtiff directly, because TIFFSetSubDirectory()
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// requires an ImageLength tag that's missing, and TIFFReadCustomDirectory()
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// takes a privately defined struct that cannot be omitted.
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//
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// TODO(p): Samsung Android DNGs also claim to be TIFF/EP, but use a smaller
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// uncompressed YCbCr image. Apple ProRAW uses the new JPEG Compression (7),
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// with a weird Orientation. It also uses that value for its raw data.
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uint32_t subtype = 0;
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uint16_t subifd_count = 0;
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const uint64_t *subifd_offsets = NULL;
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10
tools/info.h
10
tools/info.h
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@ -87,6 +87,10 @@ u16le(const uint8_t *p)
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// Exif Version 2.32 (2019)
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// https://www.cipa.jp/e/std/std-sec.html
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//
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// Digital Negative (DNG) Specification 1.5.0.0 (2019)
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// https://www.adobe.com/content/dam/acom/en/products/photoshop/pdfs
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// /dng_spec_1.5.0.0.pdf
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//
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// libtiff is a mess, and the format is not particularly complicated.
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// Exiv2 is senselessly copylefted, and cannot do much.
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// libexif is only marginally better.
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@ -560,7 +564,13 @@ static struct tiff_entry tiff_entries[] = {
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{"Photoshop", 34377, NULL}, // Adobe XMP Specification Part 3 Table 12/39
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{"Exif IFD Pointer", 34665, NULL}, // Exif 2.3
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{"GPS Info IFD Pointer", 34853, NULL}, // Exif 2.3
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{"TIFF/EP StandardID", 37398, NULL}, // ISO 12234 TIFF/EP image data format
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{"ImageSourceData", 37724, NULL}, // Adobe Photoshop TIFF Technical Notes
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{"DNGVersion", 50706, NULL}, // DNG 1.5.0.0
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{"DNGBackwardVersion", 50707, NULL}, // DNG 1.5.0.0
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{"UniqueCameraModel", 50708, NULL}, // DNG 1.5.0.0
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{"LocalizedCameraModel", 50709, NULL}, // DNG 1.5.0.0
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// TODO(p): Add more DNG tags that can be only in IFD0.
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{}
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};
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