10 * Some silly typedefs to make our units very explicit.
12 * Also, the units are chosen so that values can be expressible as
13 * integers, so that we never have FP rounding issues. And they
14 * are small enough that converting to/from imperial units doesn't
17 * We also strive to make '0' a meaningless number saying "not
18 * initialized", since many values are things that may not have
19 * been reported (eg cylinder pressure or temperature from dive
20 * computers that don't support them). But sometimes -1 is an even
21 * more explicit way of saying "not there".
23 * Thus "millibar" for pressure, for example, or "millikelvin" for
24 * temperatures. Doing temperatures in celsius or fahrenheit would
25 * make for loss of precision when converting from one to the other,
26 * and using millikelvin is SI-like but also means that a temperature
27 * of '0' is clearly just a missing temperature or cylinder pressure.
29 * Also strive to use units that can not possibly be mistaken for a
30 * valid value in a "normal" system without conversion. If the max
31 * depth of a dive is '20000', you probably didn't convert from mm on
32 * output, or if the max depth gets reported as "0.2ft" it was either
33 * a really boring dive, or there was some missing input conversion,
34 * and a 60-ft dive got recorded as 60mm.
36 * Doing these as "structs containing value" means that we always
37 * have to explicitly write out those units in order to get at the
38 * actual value. So there is hopefully little fear of using a value
39 * in millikelvin as Fahrenheit by mistake.
41 * We don't actually use these all yet, so maybe they'll change, but
42 * I made a number of types as guidelines.
79 pressure_t workingpressure;
80 const char *description; /* "LP85", "AL72", "AL80", "HP100+" or whatever */
86 pressure_t start, end;
89 extern int get_pressure_units(unsigned int mb, const char **units);
90 extern double get_depth_units(unsigned int mm, int *frac, const char **units);
91 extern double get_volume_units(unsigned int mm, int *frac, const char **units);
92 extern double get_temp_units(unsigned int mm, const char **units);
94 static inline double ml_to_cuft(int ml)
99 static inline double mm_to_feet(int mm)
101 return mm * 0.00328084;
104 static inline int to_feet(depth_t depth)
106 return mm_to_feet(depth.mm) + 0.5;
109 static double mkelvin_to_C(int mkelvin)
111 return (mkelvin - 273150) / 1000.0;
114 static double mkelvin_to_F(int mkelvin)
116 return mkelvin * 9 / 5000.0 - 459.670;
119 static inline int to_C(temperature_t temp)
123 return mkelvin_to_C(temp.mkelvin) + 0.5;
126 static inline int to_F(temperature_t temp)
130 return mkelvin_to_F(temp.mkelvin) + 0.5;
133 static inline int to_K(temperature_t temp)
137 return (temp.mkelvin + 499)/1000;
140 static inline int to_PSI(pressure_t pressure)
142 return pressure.mbar * 0.0145037738 + 0.5;
145 static inline double to_ATM(pressure_t pressure)
147 return pressure.mbar / 1013.25;
150 static inline int mbar_to_PSI(int mbar)
152 pressure_t p = {mbar};
159 temperature_t temperature;
160 pressure_t cylinderpressure;
165 * Events are currently pretty meaningless. This is
166 * just based on the random data that libdivecomputer
167 * gives us. I'm not sure what a real "architected"
168 * event model would actually look like, but right
169 * now you can associate a list of events with a dive,
170 * and we'll do something about it.
175 int type, flags, value;
179 #define MAX_CYLINDERS (8)
186 char *divemaster, *buddy;
187 double latitude, longitude;
188 depth_t maxdepth, meandepth;
189 duration_t duration, surfacetime;
191 temperature_t airtemp, watertemp;
192 cylinder_t cylinder[MAX_CYLINDERS];
194 struct event *events;
195 int samples, alloc_samples;
196 struct sample sample[];
200 * We keep our internal data in well-specified units, but
201 * the input and output may come in some random format. This
202 * keeps track of those units.
204 /* turns out in Win32 PASCAL is defined as a calling convention */
209 enum { METERS, FEET } length;
210 enum { LITER, CUFT } volume;
211 enum { BAR, PSI, PASCAL } pressure;
212 enum { CELSIUS, FAHRENHEIT, KELVIN } temperature;
213 enum { KG, LBS } weight;
216 extern const struct units SI_units, IMPERIAL_units;
217 extern struct units input_units, output_units;
222 int nr, allocated, preexisting;
226 extern struct dive_table dive_table;
228 extern int selected_dive;
229 #define current_dive (get_dive(selected_dive))
231 static inline struct dive *get_dive(unsigned int nr)
233 if (nr >= dive_table.nr)
235 return dive_table.dives[nr];
238 extern void parse_xml_init(void);
239 extern void parse_xml_file(const char *filename, GError **error);
240 extern void set_filename(const char *filename);
242 extern void show_dive_info(struct dive *);
243 extern void flush_dive_info_changes(struct dive *);
245 extern void show_dive_equipment(struct dive *);
246 extern void flush_dive_equipment_changes(struct dive *);
248 extern void update_dive(struct dive *new_dive);
249 extern void save_dives(const char *filename);
251 static inline unsigned int dive_size(int samples)
253 return sizeof(struct dive) + samples*sizeof(struct sample);
256 extern time_t utc_mktime(struct tm *tm);
258 extern struct dive *alloc_dive(void);
259 extern void record_dive(struct dive *dive);
261 extern struct sample *prepare_sample(struct dive **divep);
262 extern void finish_sample(struct dive *dive, struct sample *sample);
264 extern void report_dives(gboolean imported);
265 extern struct dive *fixup_dive(struct dive *dive);
266 extern struct dive *try_to_merge(struct dive *a, struct dive *b);
268 extern void renumber_dives(int nr);
270 extern void add_event(struct dive *dive, int time, int type, int flags, int value, const char *name);
272 /* UI related protopypes */
274 extern void init_ui(int argc, char **argv);
276 extern void run_ui(void);
278 extern void report_error(GError* error);
280 extern void add_cylinder_description(cylinder_type_t *);
281 extern void add_people(const char *string);
282 extern void add_location(const char *string);
283 extern void remember_event(const char *eventname);
284 extern void evn_foreach(void (*callback)(const char *, int *, void *), void *data);
286 extern void dive_list_update_dives(void);
287 extern void flush_divelist(struct dive *dive);
289 #define DIVE_ERROR_PARSE 1
291 const char *weekday(int wday);
292 const char *monthname(int mon);
294 #define UTF8_DEGREE "\xc2\xb0"
295 #define UTF8_SUBSCRIPT_2 "\xe2\x82\x82"