Garmin: parse the ACTIVITY message record

The ACTIVITY message contains a "local timestamp" in addition to the
regular timestamp. That gives us the timezone information.

Or rather, it would give us the timezone info if we actually used it.
But now we at least parse it, so that we *could* use it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

src/garmin_parser.c

@@ -635,6 +635,15 @@ DECLARE_FIELD(DEVICE_INFO, firmware, UINT16)
 	garmin->record_data.pending |= RECORD_DEVICE_INFO;
 }
 
+// ACTIVITY
+DECLARE_FIELD(ACTIVITY, total_timer_time, UINT32) { }
+DECLARE_FIELD(ACTIVITY, num_sessions, UINT16) { }
+DECLARE_FIELD(ACTIVITY, type, ENUM) { }
+DECLARE_FIELD(ACTIVITY, event, ENUM) { }
+DECLARE_FIELD(ACTIVITY, event_type, ENUM) { }
+DECLARE_FIELD(ACTIVITY, local_timestamp, UINT32) { }
+DECLARE_FIELD(ACTIVITY, event_group, UINT8) { }
+
 // SPORT
 DECLARE_FIELD(SPORT, sub_sport, ENUM) {
 	garmin->dive.sub_sport = (ENUM) data;
@@ -999,7 +1008,19 @@ DECLARE_MESG(DEVICE_INFO) = {
 	}
 };
 
-DECLARE_MESG(ACTIVITY) = { };
+DECLARE_MESG(ACTIVITY) = {
+	.maxfield = 7,
+	.field = {
+		SET_FIELD(ACTIVITY, 0, total_timer_time, UINT32),
+		SET_FIELD(ACTIVITY, 1, num_sessions, UINT16),
+		SET_FIELD(ACTIVITY, 2, type, ENUM),
+		SET_FIELD(ACTIVITY, 3, event, ENUM),
+		SET_FIELD(ACTIVITY, 4, event_type, ENUM),
+		SET_FIELD(ACTIVITY, 5, local_timestamp, UINT32),
+		SET_FIELD(ACTIVITY, 6, event_group, UINT8),
+	}
+};
+
 DECLARE_MESG(FILE_CREATOR) = { };
 
 DECLARE_MESG(DIVE_SETTINGS) = {