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subsurface/core/dive.h
Berthold Stoeger 989d6a3f96 media: use table instead of linked list for media 
For consistency with equipment, use our table macros for pictures.
Generally tables (arrays) are preferred over linked lists, because
they allow random access.

This is mostly copy & paste of the equipment code.

Sadly, our table macros are quite messy and need some revamping.
Therefore, the resulting code is likewise somewhat messy.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-05-06 13:58:09 -07:00

431 lines
19 KiB
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// SPDX-License-Identifier: GPL-2.0
#ifndef DIVE_H
#define DIVE_H
// dive and dive computer related structures and helpers
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
#include "divemode.h"
#include "equipment.h"
#include "picture.h"
#ifdef __cplusplus
extern "C" {
#endif
extern int last_xml_version;
extern const char *cylinderuse_text[NUM_GAS_USE];
extern const char *divemode_text_ui[];
extern const char *divemode_text[];
/*
* Events are currently based straight on what libdivecomputer gives us.
* We need to wrap these into our own events at some point to remove some of the limitations.
*/
struct event {
struct event *next;
duration_t time;
int type;
/* This is the annoying libdivecomputer format. */
int flags, value;
/* .. and this is our "extended" data for some event types */
union {
enum divemode_t divemode; // for divemode change events
/*
* NOTE! The index may be -1, which means "unknown". In that
* case, the get_cylinder_index() function will give the best
* match with the cylinders in the dive based on gasmix.
*/
struct { // for gas switch events
int index;
struct gasmix mix;
} gas;
};
bool deleted;
char name[];
};
extern int event_is_gaschange(const struct event *ev);
extern void fill_pressures(struct gas_pressures *pressures, const double amb_pressure, struct gasmix mix, double po2, enum divemode_t dctype);
/* Linear interpolation between 'a' and 'b', when we are 'part'way into the 'whole' distance from a to b */
static inline int interpolate(int a, int b, int part, int whole)
{
/* It is doubtful that we actually need floating point for this, but whatever */
if (whole) {
double x = (double)a * (whole - part) + (double)b * part;
return (int)lrint(x / whole);
}
return (a+b)/2;
}
#define MAX_SENSORS 2
struct sample // BASE TYPE BYTES UNITS RANGE DESCRIPTION
{ // --------- ----- ----- ----- -----------
duration_t time; // int32_t 4 seconds (0-34 yrs) elapsed dive time up to this sample
duration_t stoptime; // int32_t 4 seconds (0-34 yrs) time duration of next deco stop
duration_t ndl; // int32_t 4 seconds (-1 no val, 0-34 yrs) time duration before no-deco limit
duration_t tts; // int32_t 4 seconds (0-34 yrs) time duration to reach the surface
duration_t rbt; // int32_t 4 seconds (0-34 yrs) remaining bottom time
depth_t depth; // int32_t 4 mm (0-2000 km) dive depth of this sample
depth_t stopdepth; // int32_t 4 mm (0-2000 km) depth of next deco stop
temperature_t temperature; // uint32_t 4 mK (0-4 MK) ambient temperature
pressure_t pressure[MAX_SENSORS]; // int32_t 4 mbar (0-2 Mbar) cylinder pressures (main and CCR o2)
o2pressure_t setpoint; // uint16_t 2 mbar (0-65 bar) O2 partial pressure (will be setpoint)
o2pressure_t o2sensor[3]; // uint16_t 6 mbar (0-65 bar) Up to 3 PO2 sensor values (rebreather)
bearing_t bearing; // int16_t 2 degrees (-1 no val, 0-360 deg) compass bearing
uint8_t sensor[MAX_SENSORS]; // uint8_t 1 sensorID (0-255) ID of cylinder pressure sensor
uint16_t cns; // uint16_t 1 % (0-64k %) cns% accumulated
uint8_t heartbeat; // uint8_t 1 beats/m (0-255) heart rate measurement
volume_t sac; // 4 ml/min predefined SAC
bool in_deco; // bool 1 y/n y/n this sample is part of deco
bool manually_entered; // bool 1 y/n y/n this sample was entered by the user,
// not calculated when planning a dive
}; // Total size of structure: 57 bytes, excluding padding at end
struct extra_data {
const char *key;
const char *value;
struct extra_data *next;
};
/*
* NOTE! The deviceid and diveid are model-specific *hashes* of
* whatever device identification that model may have. Different
* dive computers will have different identifying data, it could
* be a firmware number or a serial ID (in either string or in
* numeric format), and we do not care.
*
* The only thing we care about is that subsurface will hash
* that information the same way. So then you can check the ID
* of a dive computer by comparing the hashes for equality.
*
* A deviceid or diveid of zero is assumed to be "no ID".
*/
struct divecomputer {
timestamp_t when;
duration_t duration, surfacetime, last_manual_time;
depth_t maxdepth, meandepth;
temperature_t airtemp, watertemp;
pressure_t surface_pressure;
enum divemode_t divemode; // dive computer type: OC(default) or CCR
uint8_t no_o2sensors; // rebreathers: number of O2 sensors used
int salinity; // kg per 10000 l
const char *model, *serial, *fw_version;
uint32_t deviceid, diveid;
int samples, alloc_samples;
struct sample *sample;
struct event *events;
struct extra_data *extra_data;
struct divecomputer *next;
};
struct dive_site;
struct dive_site_table;
struct dive_table;
struct dive_trip;
struct trip_table;
struct full_text_cache;
struct dive {
struct dive_trip *divetrip;
timestamp_t when;
struct dive_site *dive_site;
char *notes;
char *divemaster, *buddy;
struct cylinder_table cylinders;
struct weightsystem_table weightsystems;
char *suit;
int number;
int rating;
int wavesize, current, visibility, surge, chill; /* 0 - 5 star ratings */
int sac, otu, cns, maxcns;
/* Calculated based on dive computer data */
temperature_t mintemp, maxtemp, watertemp, airtemp;
depth_t maxdepth, meandepth;
pressure_t surface_pressure;
duration_t duration;
int salinity; // kg per 10000 l
int user_salinity; // water density reflecting a user-specified type
struct tag_entry *tag_list;
struct divecomputer dc;
int id; // unique ID for this dive
struct picture_table pictures;
unsigned char git_id[20];
bool notrip; /* Don't autogroup this dive to a trip */
bool selected;
bool hidden_by_filter;
struct full_text_cache *full_text; /* word cache for full text search */
bool invalid;
};
/* For the top-level list: an entry is either a dive or a trip */
struct dive_or_trip {
struct dive *dive;
struct dive_trip *trip;
};
extern void invalidate_dive_cache(struct dive *dive);
extern bool dive_cache_is_valid(const struct dive *dive);
extern int get_cylinder_idx_by_use(const struct dive *dive, enum cylinderuse cylinder_use_type);
extern void cylinder_renumber(struct dive *dive, int mapping[]);
extern int same_gasmix_cylinder(const cylinder_t *cyl, int cylid, const struct dive *dive, bool check_unused);
/* when selectively copying dive information, which parts should be copied? */
struct dive_components {
unsigned int divesite : 1;
unsigned int notes : 1;
unsigned int divemaster : 1;
unsigned int buddy : 1;
unsigned int suit : 1;
unsigned int rating : 1;
unsigned int visibility : 1;
unsigned int wavesize : 1;
unsigned int current : 1;
unsigned int surge : 1;
unsigned int chill : 1;
unsigned int tags : 1;
unsigned int cylinders : 1;
unsigned int weights : 1;
};
extern enum divemode_t get_current_divemode(const struct divecomputer *dc, int time, const struct event **evp, enum divemode_t *divemode);
extern struct event *get_next_divemodechange(const struct event **evd, bool update_pointer);
extern enum divemode_t get_divemode_at_time(const struct divecomputer *dc, int dtime, const struct event **ev_dmc);
/* picture list and methods related to dive picture handling */
#define FOR_EACH_PICTURE(_dive) \
if ((_dive) && (_dive)->pictures.nr) \
for (struct picture *picture = (_dive)->pictures.pictures; \
picture < (_dive)->pictures.pictures + (_dive)->pictures.nr; \
picture++)
extern void create_picture(const char *filename, int shift_time, bool match_all);
extern bool picture_check_valid_time(timestamp_t timestamp, int shift_time);
extern bool has_gaschange_event(const struct dive *dive, const struct divecomputer *dc, int idx);
extern int explicit_first_cylinder(const struct dive *dive, const struct divecomputer *dc);
extern int get_depth_at_time(const struct divecomputer *dc, unsigned int time);
extern fraction_t best_o2(depth_t depth, const struct dive *dive);
extern fraction_t best_he(depth_t depth, const struct dive *dive, bool o2narcotic, fraction_t fo2);
extern int get_surface_pressure_in_mbar(const struct dive *dive, bool non_null);
extern int calculate_depth_to_mbar(int depth, pressure_t surface_pressure, int salinity);
extern int depth_to_mbar(int depth, const struct dive *dive);
extern double depth_to_bar(int depth, const struct dive *dive);
extern double depth_to_atm(int depth, const struct dive *dive);
extern int rel_mbar_to_depth(int mbar, const struct dive *dive);
extern int mbar_to_depth(int mbar, const struct dive *dive);
extern depth_t gas_mod(struct gasmix mix, pressure_t po2_limit, const struct dive *dive, int roundto);
extern depth_t gas_mnd(struct gasmix mix, depth_t end, const struct dive *dive, int roundto);
#define SURFACE_THRESHOLD 750 /* somewhat arbitrary: only below 75cm is it really diving */
extern bool autogroup;
struct dive *unregister_dive(int idx);
extern void delete_single_dive(int idx);
extern int quit, force_root, ignore_bt;
#ifdef SUBSURFACE_MOBILE_DESKTOP
extern char *testqml;
#endif
extern struct dive displayed_dive;
extern unsigned int dc_number;
extern struct dive *current_dive;
#define current_dc (get_dive_dc(current_dive, dc_number))
#define displayed_dc (get_dive_dc(&displayed_dive, dc_number))
extern struct dive *get_dive(int nr);
extern struct dive *get_dive_from_table(int nr, const struct dive_table *dt);
extern struct dive_site *get_dive_site_for_dive(const struct dive *dive);
extern const char *get_dive_country(const struct dive *dive);
extern const char *get_dive_location(const struct dive *dive);
extern unsigned int number_of_computers(const struct dive *dive);
extern struct divecomputer *get_dive_dc(struct dive *dive, int nr);
extern timestamp_t dive_endtime(const struct dive *dive);
extern struct dive *make_first_dc(const struct dive *d, int dc_number);
extern int count_divecomputers(const struct dive *d);
extern struct dive *clone_delete_divecomputer(const struct dive *d, int dc_number);
void split_divecomputer(const struct dive *src, int num, struct dive **out1, struct dive **out2);
/*
* Iterate over each dive, with the first parameter being the index
* iterator variable, and the second one being the dive one.
*
* I don't think anybody really wants the index, and we could make
* it local to the for-loop, but that would make us requires C99.
*/
#define for_each_dive(_i, _x) \
for ((_i) = 0; ((_x) = get_dive(_i)) != NULL; (_i)++)
#define for_each_dc(_dive, _dc) \
for (_dc = &_dive->dc; _dc; _dc = _dc->next)
extern struct dive *get_dive_by_uniq_id(int id);
extern int get_idx_by_uniq_id(int id);
extern bool dive_site_has_gps_location(const struct dive_site *ds);
extern int dive_has_gps_location(const struct dive *dive);
extern location_t dive_get_gps_location(const struct dive *d);
extern bool dive_within_time_range(struct dive *dive, timestamp_t when, timestamp_t offset);
extern bool time_during_dive_with_offset(struct dive *dive, timestamp_t when, timestamp_t offset);
struct dive *find_dive_n_near(timestamp_t when, int n, timestamp_t offset);
/* Check if two dive computer entries are the exact same dive (-1=no/0=maybe/1=yes) */
extern int match_one_dc(const struct divecomputer *a, const struct divecomputer *b);
extern void parse_xml_init(void);
extern int parse_xml_buffer(const char *url, const char *buf, int size, struct dive_table *table, struct trip_table *trips, struct dive_site_table *sites, const char **params);
extern void parse_xml_exit(void);
extern void set_filename(const char *filename);
extern int save_dives(const char *filename);
extern int save_dives_logic(const char *filename, bool select_only, bool anonymize);
extern int save_dive(FILE *f, struct dive *dive, bool anonymize);
extern int export_dives_xslt(const char *filename, bool selected, const int units, const char *export_xslt, bool anonymize);
extern int save_dive_sites_logic(const char *filename, const struct dive_site *sites[], int nr_sites, bool anonymize);
struct membuffer;
extern void save_one_dive_to_mb(struct membuffer *b, struct dive *dive, bool anonymize);
extern void subsurface_console_init(void);
extern void subsurface_console_exit(void);
extern bool subsurface_user_is_root(void);
extern timestamp_t get_times();
extern struct dive *alloc_dive(void);
extern void free_dive(struct dive *);
extern void free_dive_dcs(struct divecomputer *dc);
extern void record_dive_to_table(struct dive *dive, struct dive_table *table);
extern void clear_dive(struct dive *dive);
extern void copy_dive(const struct dive *s, struct dive *d);
extern void selective_copy_dive(const struct dive *s, struct dive *d, struct dive_components what, bool clear);
extern struct dive *move_dive(struct dive *s);
extern void alloc_samples(struct divecomputer *dc, int num);
extern void free_samples(struct divecomputer *dc);
extern struct sample *prepare_sample(struct divecomputer *dc);
extern void finish_sample(struct divecomputer *dc);
extern struct sample *add_sample(const struct sample *sample, int time, struct divecomputer *dc);
extern void add_sample_pressure(struct sample *sample, int sensor, int mbar);
extern int legacy_format_o2pressures(const struct dive *dive, const struct divecomputer *dc);
extern bool dive_less_than(const struct dive *a, const struct dive *b);
extern bool dive_or_trip_less_than(struct dive_or_trip a, struct dive_or_trip b);
extern void sort_dive_table(struct dive_table *table);
extern struct dive *fixup_dive(struct dive *dive);
extern pressure_t calculate_surface_pressure(const struct dive *dive);
extern pressure_t un_fixup_surface_pressure(const struct dive *d);
extern int get_dive_salinity(const struct dive *dive);
extern void fixup_dc_duration(struct divecomputer *dc);
extern int dive_getUniqID();
extern unsigned int dc_airtemp(const struct divecomputer *dc);
extern unsigned int dc_watertemp(const struct divecomputer *dc);
extern int split_dive(const struct dive *dive, struct dive **new1, struct dive **new2);
extern int split_dive_at_time(const struct dive *dive, duration_t time, struct dive **new1, struct dive **new2);
extern struct dive *merge_dives(const struct dive *a, const struct dive *b, int offset, bool prefer_downloaded, struct dive_trip **trip, struct dive_site **site);
extern struct dive *try_to_merge(struct dive *a, struct dive *b, bool prefer_downloaded);
extern struct event *clone_event(const struct event *src_ev);
extern void copy_events(const struct divecomputer *s, struct divecomputer *d);
extern void copy_events_until(const struct dive *sd, struct dive *dd, int time);
extern void free_events(struct event *ev);
extern void copy_used_cylinders(const struct dive *s, struct dive *d, bool used_only);
extern void copy_samples(const struct divecomputer *s, struct divecomputer *d);
extern bool is_cylinder_used(const struct dive *dive, int idx);
extern bool is_cylinder_prot(const struct dive *dive, int idx);
extern void add_gas_switch_event(struct dive *dive, struct divecomputer *dc, int time, int idx);
extern struct event *create_event(unsigned int time, int type, int flags, int value, const char *name);
extern struct event *create_gas_switch_event(struct dive *dive, struct divecomputer *dc, int seconds, int idx);
extern struct event *clone_event_rename(const struct event *ev, const char *name);
extern void add_event_to_dc(struct divecomputer *dc, struct event *ev);
extern void swap_event(struct divecomputer *dc, struct event *from, struct event *to);
extern bool same_event(const struct event *a, const struct event *b);
extern struct event *add_event(struct divecomputer *dc, unsigned int time, int type, int flags, int value, const char *name);
extern void remove_event_from_dc(struct divecomputer *dc, struct event *event);
extern void update_event_name(struct dive *d, struct event *event, const char *name);
extern void add_extra_data(struct divecomputer *dc, const char *key, const char *value);
extern void per_cylinder_mean_depth(const struct dive *dive, struct divecomputer *dc, int *mean, int *duration);
extern int get_cylinder_index(const struct dive *dive, const struct event *ev);
extern struct gasmix get_gasmix_from_event(const struct dive *, const struct event *ev);
extern int nr_cylinders(const struct dive *dive);
extern int nr_weightsystems(const struct dive *dive);
/* UI related protopypes */
extern void remember_event(const char *eventname);
extern void invalidate_dive_cache(struct dive *dc);
extern void clear_events(void);
extern void set_dc_nickname(struct dive *dive);
extern void set_autogroup(bool value);
extern int total_weight(const struct dive *);
#define DIVE_ERROR_PARSE 1
#define DIVE_ERROR_PLAN 2
const char *monthname(int mon);
extern const char *existing_filename;
extern void subsurface_command_line_init(int *, char ***);
extern void subsurface_command_line_exit(int *, char ***);
extern bool is_dc_planner(const struct divecomputer *dc);
extern bool has_planned(const struct dive *dive, bool planned);
/* Since C doesn't have parameter-based overloading, two versions of get_next_event. */
extern const struct event *get_next_event(const struct event *event, const char *name);
extern struct event *get_next_event_mutable(struct event *event, const char *name);
/* Get gasmixes at increasing timestamps.
* In "evp", pass a pointer to a "struct event *" which is NULL-initialized on first invocation.
* On subsequent calls, pass the same "evp" and the "gasmix" from previous calls.
*/
extern struct gasmix get_gasmix(const struct dive *dive, const struct divecomputer *dc, int time, const struct event **evp, struct gasmix gasmix);
/* Get gasmix at a given time */
extern struct gasmix get_gasmix_at_time(const struct dive *dive, const struct divecomputer *dc, duration_t time);
/* these structs holds the information that
* describes the cylinders / weight systems.
* they are global variables initialized in equipment.c
* used to fill the combobox in the add/edit cylinder
* dialog
*/
extern void set_informational_units(const char *units);
extern void set_git_prefs(const char *prefs);
extern char *get_dive_date_c_string(timestamp_t when);
extern void update_setpoint_events(const struct dive *dive, struct divecomputer *dc);
#ifdef __cplusplus
}
/* Make pointers to dive and dive_trip "Qt metatypes" so that they can be passed through
* QVariants and through QML.
*/
#include <QObject>
Q_DECLARE_METATYPE(struct dive *);
#endif
#include "pref.h"
#endif // DIVE_H
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