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 double get_depth_units(unsigned int mm, int *frac, const char **units);
90 extern double get_temp_units(unsigned int mm, const char **units);
92 static inline double mm_to_feet(int mm)
94 return mm * 0.00328084;
97 static inline int to_feet(depth_t depth)
99 return mm_to_feet(depth.mm) + 0.5;
102 static double mkelvin_to_C(int mkelvin)
104 return (mkelvin - 273150) / 1000.0;
107 static double mkelvin_to_F(int mkelvin)
109 return mkelvin * 9 / 5000.0 - 459.670;
112 static inline int to_C(temperature_t temp)
116 return mkelvin_to_C(temp.mkelvin) + 0.5;
119 static inline int to_F(temperature_t temp)
123 return mkelvin_to_F(temp.mkelvin) + 0.5;
126 static inline int to_K(temperature_t temp)
130 return (temp.mkelvin + 499)/1000;
133 static inline int to_PSI(pressure_t pressure)
135 return pressure.mbar * 0.0145037738 + 0.5;
138 static inline double to_ATM(pressure_t pressure)
140 return pressure.mbar / 1013.25;
146 temperature_t temperature;
147 pressure_t cylinderpressure;
152 * Events are currently pretty meaningless. This is
153 * just based on the random data that libdivecomputer
154 * gives us. I'm not sure what a real "architected"
155 * event model would actually look like, but right
156 * now you can associate a list of events with a dive,
157 * and we'll do something about it.
162 int type, flags, value;
166 #define MAX_CYLINDERS (8)
173 char *divemaster, *buddy;
174 double latitude, longitude;
175 depth_t maxdepth, meandepth;
176 duration_t duration, surfacetime;
178 temperature_t airtemp, watertemp;
179 cylinder_t cylinder[MAX_CYLINDERS];
181 struct event *events;
182 int samples, alloc_samples;
183 struct sample sample[];
187 * We keep our internal data in well-specified units, but
188 * the input and output may come in some random format. This
189 * keeps track of those units.
191 /* turns out in Win32 PASCAL is defined as a calling convention */
196 enum { METERS, FEET } length;
197 enum { LITER, CUFT } volume;
198 enum { BAR, PSI, PASCAL } pressure;
199 enum { CELSIUS, FAHRENHEIT, KELVIN } temperature;
200 enum { KG, LBS } weight;
203 extern const struct units SI_units, IMPERIAL_units;
204 extern struct units input_units, output_units;
209 int nr, allocated, preexisting;
213 extern struct dive_table dive_table;
215 extern int selected_dive;
216 #define current_dive (get_dive(selected_dive))
218 static inline struct dive *get_dive(unsigned int nr)
220 if (nr >= dive_table.nr)
222 return dive_table.dives[nr];
225 extern void parse_xml_init(void);
226 extern void parse_xml_file(const char *filename, GError **error);
227 extern void set_filename(const char *filename);
229 extern void show_dive_info(struct dive *);
230 extern void flush_dive_info_changes(struct dive *);
232 extern void show_dive_equipment(struct dive *);
233 extern void flush_dive_equipment_changes(struct dive *);
235 extern void update_dive(struct dive *new_dive);
236 extern void save_dives(const char *filename);
238 static inline unsigned int dive_size(int samples)
240 return sizeof(struct dive) + samples*sizeof(struct sample);
243 extern time_t utc_mktime(struct tm *tm);
245 extern struct dive *alloc_dive(void);
246 extern void record_dive(struct dive *dive);
248 extern struct sample *prepare_sample(struct dive **divep);
249 extern void finish_sample(struct dive *dive, struct sample *sample);
251 extern void report_dives(gboolean imported);
252 extern struct dive *fixup_dive(struct dive *dive);
253 extern struct dive *try_to_merge(struct dive *a, struct dive *b);
255 extern void renumber_dives(int nr);
257 extern void add_event(struct dive *dive, int time, int type, int flags, int value, const char *name);
259 /* UI related protopypes */
261 extern void init_ui(int argc, char **argv);
263 extern void run_ui(void);
265 extern void report_error(GError* error);
267 extern void add_cylinder_description(cylinder_type_t *);
268 extern void add_people(const char *string);
269 extern void add_location(const char *string);
270 extern void remember_event(const char *eventname);
271 extern void evn_foreach(void (*callback)(const char *, int *, void *), void *data);
273 extern void dive_list_update_dives(void);
274 extern void flush_divelist(struct dive *dive);
276 #define DIVE_ERROR_PARSE 1
278 const char *weekday(int wday);
279 const char *monthname(int mon);
281 #define UTF8_DEGREE "\xc2\xb0"
282 #define UTF8_SUBSCRIPT_2 "\xe2\x82\x82"