- We're prepping to deimplement IsExif() because it's just a lame
duplication of ParseExifHeader().
- Transitional step to being able to fix incorrect-header problem.
- It's probably a generally good idea.
- These are usually created by other methods, but they're regularly
interacted with when you want to make tag changes and by making them
private we can't public official, testable examples.
- Corrected names for new examples.
- We added a trick to overcome the fact that the tag is a slice of longs
rather than bytes (and would usually cause check errors and alignment
problems), but this allows us to use the normal allocation and
decoding flows that are used by normal tags.
- Made things simpler, but we're still mis-encoding the
thumbnail, somehow/somewhere.
- ifd_builder_encode
- Bugfix: We were assigning the "next" IFD in correctly (so, chaining
was broken).
- Bugfix: We weren't using the right value when *writing* the "next"
IFD offset (so, chaining was, again, broken).
- The same IFD was showing as both a child and a sibling, so we were
seeing the EXIF IFD also being chained-to by the first root IFD
instead of the *actual* sibling, but only after encoding and then
decoding (so, this had to be tracked down in the encoding
semantics, which was non-trivial).
- Added a test for the stuff that we fixed.
- Implemented journaling, where we can dump a hierarchically-formatted
list of operations involved in a completed encode.
- ifd_enumerate: Added (Ifd).TagValueBytes() to return the raw tag-
value's bytes (rather than just having (Ifd).TagValue(), which returns
the value marshaled into a string). Good for comparing raw encoded
and decoded values without imposing interpretation (which gets us into
trouble with unknown-type tags whose values are non-standard and
undocumentedand, therefore, not actually parseable).
- Rewired a lot of print and dump functions.
- For naming-specificity as well as functionality.
- Removed from debugging.
- Big step. This is the most complicated thing we can do.
- ifd_builder_encode: Need to debug encoding linked IFDs to EXIF.
- ifd_builder: Renamed `SetNextIfd()` to `SetNextIb()`.
- ifd_builder: Bugfix to size assertion on return of
(IfdBuilderEncode).encodeIfdToBytes().
- ifd_enumerate: Rename PrintNode() to PrintTree().
- ifd_enumerate: Added DumpTree() (to return a list of strings).
Dustin Oprea
Dustin Oprea