[PATCH 2/3] Ignore buddy pressures in Liquivision import

[Miika Turkia]

Since we do not currently handle buddy pressure properly, let's just
ignore that information for now. Unfortunately, this information is lost
in this case, but if we include it, the pressure graph is going to be
bogus.

Signed-off-by: Miika Turkia <miika.turkia at gmail.com>
---
 liquivision.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/liquivision.c b/liquivision.c
index 2f1bb00..6eefdc1 100644
--- a/liquivision.c
+++ b/liquivision.c
@@ -35,6 +35,8 @@ struct lv_event {
 	} pressure;
 };
 
+uint16_t primary_sensor;
+
 static int handle_event_ver2(int code, const unsigned char *ps, unsigned int ps_ptr, struct lv_event *event)
 {
 	// Skip 4 bytes
@@ -45,6 +47,7 @@ static int handle_event_ver2(int code, const unsigned char *ps, unsigned int ps_
 static int handle_event_ver3(int code, const unsigned char *ps, unsigned int ps_ptr, struct lv_event *event)
 {
 	int skip = 4;
+	uint16_t current_sensor;
 
 	switch (code) {
 	case 0x0002:	//	Unknown
@@ -67,8 +70,23 @@ static int handle_event_ver3(int code, const unsigned char *ps, unsigned int ps_
 	case 0x000f:
 		// Tank pressure
 		event->time = array_uint32_le(ps + ps_ptr);
-		event->pressure.sensor = 0; //array_uint16_le(ps + ps_ptr + 4);
-		event->pressure.mbar = array_uint16_le(ps + ps_ptr + 6) * 10; // cb->mb
+
+		/* As far as I know, Liquivision supports 2 sensors, own and buddie's. This is my
+		 * best guess how it is represented. */
+
+		current_sensor = array_uint16_le(ps + ps_ptr + 4);
+		if (primary_sensor == 0) {
+			primary_sensor = current_sensor;
+		}
+		if (current_sensor == primary_sensor) {
+			event->pressure.sensor = 0;
+			event->pressure.mbar = array_uint16_le(ps + ps_ptr + 6) * 10; // cb->mb
+		} else {
+			/* Ignoring the buddy sensor for no as we cannot draw it on the profile.
+			event->pressure.sensor = 1;
+			event->pressure.mbar = array_uint16_le(ps + ps_ptr + 6) * 10; // cb->mb
+			*/
+		}
 		// 1 byte PSR
 		// 1 byte ST
 		skip = 10;
@@ -97,9 +115,15 @@ static void parse_dives (int log_version, const unsigned char *buf, unsigned int
 	struct sample *sample;
 
 	while (ptr < buf_size) {
+		int i;
 		dive = alloc_dive();
+		primary_sensor = 0;
 		dc = &dive->dc;
 
+		/* Just the main cylinder until we can handle the buddy cylinder porperly */
+		for (i = 0; i < 1; i++)
+			fill_default_cylinder(&dive->cylinder[i]);
+
 		// Model 0=Xen, 1,2=Xeo, 4=Lynx, other=Liquivision
 		model = *(buf + ptr);
 		switch (model) {
-- 
2.1.0