X-Git-Url: http://git.tdb.fi/?p=ext%2Fsubsurface.git;a=blobdiff_plain;f=dive.c;h=54784cdbabfb01fbb5c5a8db539cdc481f20c613;hp=dad0e237bc8726f0c983ef73fdfa1d47fd8540c4;hb=HEAD;hpb=b4938ec2de87c3a43b749a1607d3bacb17d37cff

diff --git a/dive.c b/dive.c
index dad0e23..54784cd 100644
--- a/dive.c
+++ b/dive.c
@@ -120,6 +120,28 @@ double get_depth_units(unsigned int mm, int *frac, const char **units)
 	return d;
 }
 
+double get_weight_units(unsigned int grams, int *frac, const char **units)
+{
+	int decimals;
+	double value;
+	const char* unit;
+
+	if (output_units.weight == LBS) {
+		value = grams_to_lbs(grams);
+		unit = "lbs";
+		decimals = 0;
+	} else {
+		value = grams / 1000.0;
+		unit = "kg";
+		decimals = 1;
+	}
+	if (frac)
+		*frac = decimals;
+	if (units)
+		*units = unit;
+	return value;
+}
+
 struct dive *alloc_dive(void)
 {
 	const int initial_samples = 5;
@@ -160,7 +182,7 @@ struct sample *prepare_sample(struct dive **divep)
 	return NULL;
 }
 
-void finish_sample(struct dive *dive, struct sample *sample)
+void finish_sample(struct dive *dive)
 {
 	dive->samples++;
 }
@@ -234,21 +256,164 @@ static int same_rounded_pressure(pressure_t a, pressure_t b)
 	return abs(a.mbar - b.mbar) <= 500;
 }
 
-struct dive *fixup_dive(struct dive *dive)
+static void sanitize_gasmix(struct gasmix *mix)
+{
+	unsigned int o2, he;
+
+	o2 = mix->o2.permille;
+	he = mix->he.permille;
+
+	/* Regular air: leave empty */
+	if (!he) {
+		if (!o2)
+			return;
+		/* 20.9% or 21% O2 is just air */
+		if (o2 >= 209 && o2 <= 210) {
+			mix->o2.permille = 0;
+			return;
+		}
+	}
+
+	/* Sane mix? */
+	if (o2 <= 1000 && he <= 1000 && o2+he <= 1000)
+		return;
+	fprintf(stderr, "Odd gasmix: %d O2 %d He\n", o2, he);
+	memset(mix, 0, sizeof(*mix));
+}
+
+/*
+ * See if the size/workingpressure looks like some standard cylinder
+ * size, eg "AL80".
+ */
+static void match_standard_cylinder(cylinder_type_t *type)
+{
+	double cuft;
+	int psi, len;
+	const char *fmt;
+	char buffer[20], *p;
+
+	/* Do we already have a cylinder description? */
+	if (type->description)
+		return;
+
+	cuft = ml_to_cuft(type->size.mliter);
+	cuft *= to_ATM(type->workingpressure);
+	psi = to_PSI(type->workingpressure);
+
+	switch (psi) {
+	case 2300 ... 2500:	/* 2400 psi: LP tank */
+		fmt = "LP%d";
+		break;
+	case 2600 ... 2700:	/* 2640 psi: LP+10% */
+		fmt = "LP%d";
+		break;
+	case 2900 ... 3100:	/* 3000 psi: ALx tank */
+		fmt = "AL%d";
+		break;
+	case 3400 ... 3500:	/* 3442 psi: HP tank */
+		fmt = "HP%d";
+		break;
+	case 3700 ... 3850:	/* HP+10% */
+		fmt = "HP%d+";
+		break;
+	default:
+		return;
+	}
+	len = snprintf(buffer, sizeof(buffer), fmt, (int) (cuft+0.5));
+	p = malloc(len+1);
+	if (!p)
+		return;
+	memcpy(p, buffer, len+1);
+	type->description = p;
+}
+
+
+/*
+ * There are two ways to give cylinder size information:
+ *  - total amount of gas in cuft (depends on working pressure and physical size)
+ *  - physical size
+ *
+ * where "physical size" is the one that actually matters and is sane.
+ *
+ * We internally use physical size only. But we save the workingpressure
+ * so that we can do the conversion if required.
+ */
+static void sanitize_cylinder_type(cylinder_type_t *type)
+{
+	double volume_of_air, atm, volume;
+
+	/* If we have no working pressure, it had *better* be just a physical size! */
+	if (!type->workingpressure.mbar)
+		return;
+
+	/* No size either? Nothing to go on */
+	if (!type->size.mliter)
+		return;
+
+	if (input_units.volume == CUFT) {
+		/* confusing - we don't really start from ml but millicuft !*/
+		volume_of_air = cuft_to_l(type->size.mliter);
+		atm = to_ATM(type->workingpressure);		/* working pressure in atm */
+		volume = volume_of_air / atm;			/* milliliters at 1 atm: "true size" */
+		type->size.mliter = volume + 0.5;
+	}
+
+	/* Ok, we have both size and pressure: try to match a description */
+	match_standard_cylinder(type);
+}
+
+static void sanitize_cylinder_info(struct dive *dive)
 {
 	int i;
+
+	for (i = 0; i < MAX_CYLINDERS; i++) {
+		sanitize_gasmix(&dive->cylinder[i].gasmix);
+		sanitize_cylinder_type(&dive->cylinder[i].type);
+	}
+}
+
+struct dive *fixup_dive(struct dive *dive)
+{
+	int i,j;
 	double depthtime = 0;
 	int lasttime = 0;
+	int lastindex = -1;
 	int start = -1, end = -1;
 	int maxdepth = 0, mintemp = 0;
 	int lastdepth = 0;
-	int lasttemp = 0;
+	int lasttemp = 0, lastpressure = 0;
+	int pressure_delta[MAX_CYLINDERS] = {INT_MAX, };
 
+	sanitize_cylinder_info(dive);
 	for (i = 0; i < dive->samples; i++) {
 		struct sample *sample = dive->sample + i;
 		int time = sample->time.seconds;
 		int depth = sample->depth.mm;
 		int temp = sample->temperature.mkelvin;
+		int pressure = sample->cylinderpressure.mbar;
+		int index = sample->cylinderindex;
+
+		if (index == lastindex) {
+			/* Remove duplicate redundant pressure information */
+			if (pressure == lastpressure)
+				sample->cylinderpressure.mbar = 0;
+			/* check for simply linear data in the samples
+			   +INT_MAX means uninitialized, -INT_MAX means not linear */
+			if (pressure_delta[index] != -INT_MAX && lastpressure) {
+				if (pressure_delta[index] == INT_MAX) {
+					pressure_delta[index] = abs(pressure - lastpressure);
+				} else {
+					int cur_delta = abs(pressure - lastpressure);
+					if (cur_delta && abs(cur_delta - pressure_delta[index]) > 150) {
+						/* ok the samples aren't just a linearisation
+						 * between start and end */
+						pressure_delta[index] = -INT_MAX;
+					}
+				}
+			}
+		}
+		lastindex = index;
+		lastpressure = pressure;
 
 		if (lastdepth)
 			end = time;
@@ -280,8 +445,48 @@ struct dive *fixup_dive(struct dive *dive)
 		lastdepth = depth;
 		lasttime = time;
 	}
-	if (end < 0)
+	/* if all the samples for a cylinder have pressure data that
+	 * is basically equidistant throw out the sample cylinder pressure
+	 * information but make sure we still have a valid start and end
+	 * pressure
+	 * this happens when DivingLog decides to linearalize the
+	 * pressure between beginning and end and for strange reasons
+	 * decides to put that in the sample data as if it came from
+	 * the dive computer; we don't want that (we'll visualize with
+	 * constant SAC rate instead)
+	 * WARNING WARNING - I have only seen this in single tank dives
+	 * --- maybe I should try to create a multi tank dive and see what
+	 * --- divinglog does there - but the code right now is only tested
+	 * --- for the single tank case */
+	for (j = 0; j < MAX_CYLINDERS; j++) {
+		if (abs(pressure_delta[j]) != INT_MAX) {
+			cylinder_t *cyl = dive->cylinder + j;
+			for (i = 0; i < dive->samples; i++)
+				if (dive->sample[i].cylinderindex == j)
+					dive->sample[i].cylinderpressure.mbar = 0;
+			if (! cyl->start.mbar)
+				cyl->start.mbar = cyl->sample_start.mbar;
+			if (! cyl->end.mbar)
+				cyl->end.mbar = cyl->sample_end.mbar;
+			cyl->sample_start.mbar = 0;
+			cyl->sample_end.mbar = 0;
+		}
+	}
+	if (end < 0) {
+		/* Assume an ascent/descent rate of 9 m/min */
+		int depth = dive->maxdepth.mm;
+		int asc_desc_time = depth*60/9000;
+		int duration = dive->duration.seconds;
+
+		/* Some sanity checks against insane dives */
+		if (duration < 2)
+			duration = 2;
+		if (asc_desc_time * 2 >= duration)
+			asc_desc_time = duration/2;
+
+		dive->meandepth.mm = depth*(duration-asc_desc_time)/duration;
 		return dive;
+	}
 
 	update_duration(&dive->duration, end - start);
 	if (start != end)
@@ -294,6 +499,7 @@ struct dive *fixup_dive(struct dive *dive)
 	add_people(dive->buddy);
 	add_people(dive->divemaster);
 	add_location(dive->location);
+	add_suit(dive->suit);
 	for (i = 0; i < MAX_CYLINDERS; i++) {
 		cylinder_t *cyl = dive->cylinder + i;
 		add_cylinder_description(&cyl->type);
@@ -302,6 +508,10 @@ struct dive *fixup_dive(struct dive *dive)
 		if (same_rounded_pressure(cyl->sample_end, cyl->end))
 			cyl->end.mbar = 0;
 	}
+	for (i = 0; i < MAX_WEIGHTSYSTEMS; i++) {
+		weightsystem_t *ws = dive->weightsystem + i;
+		add_weightsystem_description(ws);
+	}
 
 	return dive;
 }
@@ -320,7 +530,7 @@ static struct dive *add_sample(struct sample *sample, int time, struct dive *div
 		return NULL;
 	*p = *sample;
 	p->time.seconds = time;
-	finish_sample(dive, p);
+	finish_sample(dive);
 	return dive;
 }
 
@@ -506,6 +716,8 @@ struct dive *try_to_merge(struct dive *a, struct dive *b)
 	MERGE_TXT(res, a, b, notes);
 	MERGE_TXT(res, a, b, buddy);
 	MERGE_TXT(res, a, b, divemaster);
+	MERGE_MAX(res, a, b, rating);
+	MERGE_TXT(res, a, b, suit);
 	MERGE_MAX(res, a, b, number);
 	MERGE_MAX(res, a, b, maxdepth.mm);
 	res->meandepth.mm = 0;