For some dive computers (at least the Shearwater Predator, I haven't
checked if there are others), libdivecomputer used to return setpoint
values in each sample even if the dive computer was in OC mode. Those
setpoint values are redundant and confuse our algorithm that tries to
detect if a dive is OC or CCR. So when manually switching from CCR to
OC we make sure that there are no setpoint values in the samples.
This is a destructive change - if the user switches to OC by mistake and
accepts that change, even when switching back to CCR the setpoint changes
during the dive are lost.
I rewrote the code dealing with the events as it was rather confused.
Looping over the events that way didn't make any sense since
get_next_event() is guaranteed to give you the first (if any) event of the
requested name.
See #826
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
When one has 2 pictures with the same timestamp, these pictures are
reordered on saving (requires something changed on the specific dive for
the save to actually trigger). This patch keeps the picture order intact
in the XML log.
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
No oxygen at all is not quite enough for the average diver but this prevents
inifintie loops/extremely long deco when subsurface is used in pscr mode
with unrealistic values for pscr preferences.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Reported-by: Anton "glance" Lundin <glance@acc.umu.se>
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The ratio between SAC and oxygen metabolism rate can be assumed constant
but not the metabolism rate. So we better base our calculation on the ratio
that uses the SAC from the preferences as that pairs well with the O2
consumption from the preferences.
Hence we ran remove the sac parameter from fill_pressures().
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
When changing to a CCR dive, add a setpoint change to the default setpoint
at the beginning of the dive. Otherwise add an explicit setpoint change to 0
.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
A value of zero (which is the normal legacy one) remains "unknown", but
the divecomputer backend can now give both gasmix and cylinder number
this way.
Currently only the EON Steel backend does that, but it should be easy
enough to extend others too.
Also, fix the user-visible cylinder numbering in the cylinder change
tooltip to use a human-friendlier one-based numbering (ie first cylinder
is "cyl 1", not "cyl 0")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Commit 6cf3787a0e ("Remove code that zeroes out duplicate oxygen sensor
and temperature values") incorrectly removes the code that zeroes out the
temperatures.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This ensures that the list of configured cylinders is consecutive.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
No, this causes double free problems.
And they show up in the weirdest ways, e.g. when just closing your data
file. Or when making changes and re-saving a modified dive.
Fixes#794
This reverts commit 0bdd8f41e0.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
When we load multiple files, we call set_userid multiple times. Then we
need to free the old user id before we set a new.
Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The previous taglist_free didn't free the divetag, it only freed the
tag.
Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
