FlapJackApps/libdivecomputer
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Always use the sample timestamp as the base value

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With a time based sample interval, the number of samples for a single
timestamp should be constant. However in practice some devices
occasionally store fewer samples. Since our sample time is based purely
on the sample interval, it goes completely out of sync with the sample
timestamp. To avoid this problem, the sample timestamp is used as the
base value.

For the Oceanic Pro Plus 2, this problem is very noticable. After about
115 minutes into a dive, the sample interval appears to increase to 60
seconds. Thus, without this fix, the resulting dive time for long dives
is suddenly much shorter than it should be.
This commit is contained in:
Jef Driesen 2017-01-31 22:44:02 +01:00
parent 0832f97492
commit 3f9133def9
1 changed files with 1 additions and 1 deletions
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2
src/oceanic_vtpro_parser.c
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@ -333,7 +333,7 @@ oceanic_vtpro_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_
// Time.
if (interval)
time += interval;
time = timestamp * 60 + (i + 1) * interval;
else
time = timestamp * 60 + (i + 1) * 60.0 / count + 0.5;
sample.time = time;