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90f9f0bc19
This PR (and fix981_canonAutoFocus2) use a decoder listed in TiffMappingInfo to decode Exif.Canon.AFInfo. The decoding function "manufactures" Exif tags such as Exif.Canon.AFNumPoints from the data in Exif.Canon.AFInfo. These tags must never be written to file and are removed from the metadata in exif.cpp/ExifParser::encode(). Three of the tags created (AFPointsInFocus,AFPointsSelected, AFPrimaryPoint) are bitmasks. As the camera can have up to 64 focus points, the tags are a 64 bit mask to say which points are active. The function printBitmask() reports data such as 1,2,3 or (none). This decoding function decodeCanonAFInfo() added to TiffMappingInfo manufactures the new tags. Normally, tags are processed by the binary tag decoder and that approach was taken in branch fix981_canonAf. However, the binary tag decoder cannot deal with AFInfo because the size of some metadata arrays cannot be determined at compile time. |
6 years ago | |
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| .. | ||
| bugfixes | 6 years ago | |
| tiff_test | 7 years ago | |
| __init__.py | 8 years ago | |
| doc.md | 7 years ago | |
| runner.py | 7 years ago | |
| suite.conf | 7 years ago | |
| system_tests.py | 7 years ago | |
| writing_tests.md | 7 years ago | |