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The simplest video-formats to parse so far.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Whereas extraction of the dive-duration is trivial, AVIs don't seem
to have a standardized way of saving the creation time. This commit
implements support for two versions randomly found on the internet.
Additional version will follow if need arises. AVI seems not to be
a particular popular format for either vacation or professional
videographers.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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We want the duration of videos for two reasons:
- To display the duration of the video in the profile plot.
- To be able to determine which dive a video is closer to if the
start is not during a dive.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Parse MP4s and related video files and extract the creation timestamp
from the "mdhd" (media header) atom.
Introduce helper function templates to extract arbitrary-length
unsigned integers in big-endian format from file or memory.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Thus, metadata has to be only read once and the picture_load_exif_data()
function can be removed.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Move all metadata function into new core/metadata.cpp file.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Berthold Stoeger