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If for some reason the diluent is pure oxygen, there is a zero
divided by zero error in the partial pressure calculation. This
patch prevents it.
Fixes #774
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We rely on samples being NULL if a dc have no samples. Its completely
legal for malloc to return a valid pointer to nowhere for zero sized
malloc, which you can't follow and read what its pointing at. Its only
viable to call free() on.
In other code, if samples is a valid pointer, we dereference it and look
at the first sample.
Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We rely on alloc_samples in prepare_sample. If alloc_samples weren't
initialized prepare_sample would wreak havoc on the samples list.
Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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If not cylinder with type DILUENT or OXYGEN is defined, this function
returns -1 which should not be used as an index to an array. This
patch adds code to check for this return value and exit gracefully.
On line I marked with a comment. Someone more knowledgeable of that part of
code than me should double check that return is here what we want.
[Dirk Hohndel: fixed small oversight...]
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Fixup_pressure() needs to calculate the cylinder pressures at the
start and at the end of the dive, also for CCR oxygen cylinders.
Since, in the case of CCR, the default cylinder is the diluent,
this is not automatically done for oxygen. This code provides
for fixup_pressure() to be able to do the calculations for oxygen
as well. Another change to fixup_dive() invokes fixup_pressure()
to calculate the values for the oxygen cylinder.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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It seems that in some scenarios we end up with a string that isn't NUL
terminated and that results in garbage being stored as userid. This patch
is a little brute force but it fixes the problem even if a previous
version os Subsurface ended up adding other text to the end of the userid.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Change the meaning that _the_ cylinder (as we treat it in OC dives) is the
diluent cylinder (rather than the O2 cylinder). This eliminates special
cases. Now, for CCR, we have to handle the O2 cylinder in addition
(rather than the diluent in addition).
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Slowly trying to track down all spots where we copy string pointers
instead of string data. And making sure that we free those pointers before
overwriting them.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch is bigger than necessary because I also renamed the
get_cylinder_use() function to the much more accurate
get_cylinder_idx_by_use().
If we have no gas changes (except for a possible explicit first gas),
(which in the CCR case also means no bailout), this code will give you
correct per cylinder depth and duration for oxygen and diluent and
therefore create more reasonable gas consumption data for CCR dives.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Oddly we already had code to load this from XML, but nothing else.
This makes the load from XML work like the rest of our code and adds the
save to XML plus the load and save for the git format.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Add a time linear gas interpolation strategy. Some minor changes.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Having pointers copied around that might get freed elsewhere could be a
problem.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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So this should count dives with neither buddy nor divemaster, without a
location, with no tags, etc.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Checking against the location field probably wasn't the best way to do
this...
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This recognizes recognize some strigns (serial number and firmware
version), and the ones that it doesn't recognize it adds as extra data
using Dirk's new interface.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Calculations for passive semi-closed rebreathers are pretty much like OC
except the pO2 is lower bey a certain (SAC dependent) factor. This patch
introduces the corresponding calculations in case dctype == PSCR which is
so far never set and there is currently no UI for these calculations. As
pO2 is SAC dependent it takes a certain attempt at getting it and drops to
defaults from the prefs otherwise.
As there is no UI at this point and I also don't have any dives, this has
not received much testing, yet, but it compiles. At least.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Currently the gas pressures stored in structures of pressure are
calculated using the gasmix composition of the currently selected
cylinder. But with CCR dives the default cylinder is the oxygen
cylinder (here, index 0). However, the gas pressures need to
be calculated using gasmix data from cylinder 1 (the diluent
cylinder). This patch allows setting the appropriate cylinder
for calculating the values in the structures of pressure. It
also allows for correctly calculating gas pressures for any
open circuit cylinders (e.g. bailout) that a CCR diver may
use. This is performed as follows:
1) In dive.h create an enum variable {oxygen, diluent, bailout}
2) Within the definition of cylinder_t, add a member: cylinder_use_type
This stores an enum variable, one of the above.
3) In file.c where the Poseidon CSV data are read in, assign
the appropriate enum values to each of the cylinders.
4) Within the definition of structure dive, add two members:
int oxygen_cylinder_index
int diluent_cylinder_index
This will keep the indices of the two main CCR cylinders.
5) In dive.c create a function get_cylinder_use(). This scans the
cylinders for that dive, looking for a cylinder that has a
particular cylinder_use_type and returns that cylinder index.
6) In dive.c create a function fixup_cylinder_use() that stores the
indices of the oxygen and diluent cylinders in the variables
dive->oxygen_cylinder_index and dive->diluent_cylinder_index,
making use of the function in 4) above.
7) In profile.c, modify function calculate_gas_information_new()
to use the above functions for CCR dives to find the oxygen and
diluent cylinders and to calculate partail gas pressures based
on the diluent cylinder gas mix.
This results in the correct calculation of gas partial pressures
in the case of CCR dives, displaying the correct partial pressure
graphs in the dive profile widget.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Not quite sure where such a dive would come from, but anyway, just don't
dereference the pointer unless it's non-NULL.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Remove the code that changes all duplicate oxygen sensor, setpoint and
temperature values from a dive log to zero. One of the motivations is
that a zero setpoint value indicates an Open Circuit dive segment, not
Closed Circuit Rebreather. The code in dive.c is removed and the comments
for the corresponding restoration code that restores the last known values
into sensor or temperature with zero values is [fill_o2_values()
in profile.c] is changed to apply to the present situation.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Currently, if there is a po2 given in the dive log, the dive is assumed
to be CCR. When a CCR dive has a fo2 of 100%, then the po2 is set as
the same as ambient pressure. This destroys the CCR po2 graph in the dive
profile that derives from oxygen with a fo2 of 100% in one of the
cylinders but which, after adding the dilent gas, has a po2 far below
ambient pressure. The calculation for 100% oxygen only applies to deco
using 100% o2 and then the dive computer calculates the appropriate po2.
This patch removes the setting of po2 to ambient when fo2 is 100%,
1) to enable accurate graphing of po2 values for CCR dives using 100% o2
in the first cylinder.
2) To use the po2 value reported by the DC in the first place.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This isn't Cobalt specific, this is specific to dive computers that
indicate the first tank that's in use with a gaschange event that
coincides with the first sample.
We need to make sure that we suppress showing that gas change event
(regardless which cylinder it goes to) and instead set the correct
cylinder index from the very start of the dive.
This works with the test data I have and doesn't seem to break thing with
any of the files that I tried... but I'm worried that this is not the
right way to do things.
Fixes #742
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We cannot zero setpoint value upon import if the current and previous
values are zero. This is because on setpoint context a value of 0 means
open circuit.
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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The latest CCR patches had rendered the planner not usable for CCR dives.
This patch corrects this (and reenables the CCR set point column for
segments). The problem was that a new member setpoint of struct divepoint
had been introduced, but there was already po2 which had the same meaning.
This patch merges the two and renames them setpoint to prevent future
confusion.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch responds to the side effects that the CCR code has had with
respect to ceilings in OC dives and dive plans. Dive ceilings are now
calculated correctly again.
The following were performed:
1) remove the oxygen sensor and setpoint fields from the gas_pressures
structure.
2) Re-insert setpoint and oxygen sensor fields in the plot_data structure.
3) Remove the algorithm that reads the o2 sensor data and calculates the
pressures.po2 value from function fill_pressures() in dive.c and save
it as a separate function calc_ccr_po2() in profile.c.
4) Activate calc_ccr_po2 from function fill_pressures() in profile.c.
5) Move the relative position of the call to fill_pressures() within the
function create_polt_info_new() in profile.c.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch adds code to the function fillpressures() in dive.c to
allow calculating o2 pressures, based on the data from the po2
sensors in the system. The following changes were made:
1) add code to perform po2 calculations for CCR with 1, 2 or 3
oxygen sesnors.
2) Add four fields to the gas_pressures structure in dive.h. This
allows communication of data between the function that calls
get_pressures() and the return of partail pressure values to the
calling function.
3) Delete the fields for setpoint and gas partial pressures from
the structure plot_info. All partial pressures (from instruments
as well as calculated) now reside in the pressures structure
that forms part of plot_info.
4) Perform changes in several parts of profile.c to make use of the
pressures structure in plot_info.
[Dirk Hohndel: yet again massive whitespace cleanup]
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Instead of trying to use add_event() to reinsert events we simply copy the
memory and adjust the pointers.
Using add_event() lost the gas mix and gas index information on gaschange
events - and this prevent switches between cylinders with the same gasmix
to be rendered correctly.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch does three things:
1) A new function fill_o2_values() is added to profile.c. This
fills all oxygen sesnsor and setpoint values that have been
zeroed before in order to save space in the dive log. This
recreates the full set of sensor values obtained from the
original CCR xml log file.
2) Function fill_o2_values() is activated in function create_
plot_info_new() in profile.c
3) The calling parameters to function fill_pressures() in dive.c
are changed. The last parameter is now a pointer to a structure
of divecomputer. This will be needed in the last patch of the
present series of three patches.
[Dirk Hohndel: minor whitespace cleanup]
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Decode the gasmix data into a sane format when creating the event, and
add the (currently unused) ability to specify a gas change to a
particular cylinder rather than (or in addition to) the gasmix.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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In commit 272f85bb2444 ("Fix silly crash") I indeed fixed the crash, but I
also broke the code. Now a broken userid might end upsaved in the data
file. Oops.
This should be correct now.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Sadly, some of the code being fixed is my own...
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch allows the importing of oxygen sensor and setpoint data from
Poseidon CCR dive logs.
1) Change parse-xml.c to read up to three oxygen sensor values from xml.
and to store the information in sample structures
2) Change parse-xml.c to read o2 setpoint values fro xml and to store
it in sample structures
3) Change dive.c to delete all sensor and setpoint values where
subsequent samples have sensor/setpoint values that are the same.
4) Change profile.c to store the sensor/setpoint values from the samples
into plotinfo.
5) Change the sample Poseidon xml log in the dives directory to ensure
the correct order and hierarchy of the dive and divecomputer nodes.
[Dirk Hohndel: minor cleanup, removed debug code, whitespace]
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch concludes the calculation of gas pressure readings for CCR
dives. Duplicate diluent gas pressures are removed from the dive structure
and set to zero, as is done for the other gases.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Who the heck uses strcpy?
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This patch introduces a new structure holding partial pressures (doubles in bar) for
all three gases and a helper function to compute them from gasmix (which holds fractions)
and ambient pressure. Currentlty this works for OC and CCR, to be extended later to PSCR.
Currently the dive_comp_type argument is unused.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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The old implementation was... let's call it creative.
This tries to actually get things right instead of using magic.
Don't pretend that double values are ints.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This will be needed when pasting the data back into a (set of) dive(s).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This commit doesn't do anything, yet. It just puts in place helper
infrastructure that will later allow us to cut and paste parts of the data
of one dive into another dive (or set of dives).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This adds a checkbox for the divecomputer download dialog that allows you
to tell the download to put the newly downloaded dives into a trip of
their own. That in turn will disable the dive merging with any existing
dives, which means that you will not mix up your newly downloaded dives
with any old dives.
That, in turn, is very convenient of you know that some of the dives were
done by other divers (or from testing that happened during servicing etc),
or the dive dates etc were wrong because the dive computer date had reset
due to battery changes etc.
Once you have all the dives in a private trip of their own, you can then
fix them up (delete dives you don't want to merge etc), and then after all
the data is ok you might want to merge the cleaned-up results with
previous trips etc, and then manually ask subsurface to merge the dives or
whatever.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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So far, the fields for the two SAC rates did not show a unit and were implictly l/min.
Now they respect the settings for volume units. This was harder than I thought for two reasons:
1) Imperial units for SAC are cuft/min but a typical value would be .70. So I made the point
the field prefix and what is entered is actually hundreth of cuft per minute.
2) I had to get the rounding right in order not to get effects like 20l/min become .70 cuft/min (19800 ml/min
internally) which would then become 19l/min when switching back.
While being at it, I gave the gradient factors '%'-signs as units.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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The gas use logic in the dive statistics page is confused.
The SAC case had a special case for "unknown", but only for
the first gas. Other gases had the normal empty case.
Also, the logic was really odd - if you had gases that weren't used (or
pressures not known) intermixed with gases you *did* have pressure for,
the statistics got really confused.
The list of gases showed all gases that we know about during the dive,
but then the gas use and SAC-rate lists wouldn't necessarily match,
because the loops that computed those stopped after the first gas that
didn't have any pressure change.
To make things worse, the first cylinder was special-cased again, so it
all lined up for the single-cylinder case.
This makes all the cylinders act the same way, leaving unknown gas use
(and thus SAC) just empty for that gas.
It also fixes the SAC calculation case where we don't have real samples,
and the profile is a fake profile - possibly with gas changes in between
the fake points. We now make the SAC calculations match what we show -
which is admittedly not at all necessarily what the dive was, but at
least we're consistent.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We had pointers to data structures on the stack which we frequently
reallocated. These data structure contain basically a filename and an
offset. We then create a hash of the pointers to those datastructures with
the filename being the key. And then we passed those pointers around
through a Qt model(!!!) only in order to then later look up by filename
what the offset might be.
I am at a loss for words for the lunacy behind this design.
How about we just remember the offsets and pass the integers around?
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Almost invisible, mostly looking like an odd bug in the profile code,
there was a tiny red line at depth 0 in the planned profile. Turns out
that was the missing mean depth. We didn't populate enough data in the
dive computer of the dive we generated from the plan (and the length of
the depth line was incorrectly determined by the duration of the dive
instead of the duration stored in the dive computer).
Fixes #570
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Robert C. Helling
Anton Lundin
Willem Ferguson
Dirk Hohndel
Linus Torvalds
Miika Turkia