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Shearwater Teric: add support for the TAG INFO_EVENT

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This logs every INFO_EVENT record and provides a SAMPLE_EVENT_BOOKMARK event for
the only INFO_EVENT we can parse so far, the TAG event. Three bits in the flag
value in that event structure are now used to hold the tag type, and if a
non-zero type has been set, then the value is the heading in degress.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2019-03-13 21:42:40 -07:00
parent d0ec5cf760
commit e4698c4844
2 changed files with 40 additions and 0 deletions
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11
include/libdivecomputer/parser.h
View File

@ -124,6 +124,17 @@ typedef enum parser_sample_flags_t {
#define SAMPLE_FLAGS_SEVERITY_WARN (3 << SAMPLE_FLAGS_SEVERITY_SHIFT)
#define SAMPLE_FLAGS_SEVERITY_ALARM (4 << SAMPLE_FLAGS_SEVERITY_SHIFT)
/* these are used for the types of TAGs in Shearwater PNF info events */
#define SAMPLE_FLAGS_TYPE_SHIFT 5
#define SAMPLE_FLAGS_TYPE_MASK (7 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_NONE (0 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_INTEREST (1 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_NAVPOINT (2 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_DANGER (3 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_ANIMAL (4 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_ISSUE (5 << SAMPLE_FLAGS_TYPE_SHIFT)
#define SAMPLE_FLAGS_TYPE_INJURY (6 << SAMPLE_FLAGS_TYPE_SHIFT)
typedef enum parser_sample_vendor_t {
SAMPLE_VENDOR_NONE,
SAMPLE_VENDOR_UWATEC_ALADIN,

29
src/shearwater_predator_parser.c
View File

@ -58,6 +58,7 @@
#define LOG_RECORD_CLOSING_5 0x25
#define LOG_RECORD_CLOSING_6 0x26
#define LOG_RECORD_CLOSING_7 0x27
#define LOG_RECORD_INFO_EVENT 0x30
#define LOG_RECORD_FINAL 0xFF
#define SZ_BLOCK 0x80
@ -81,6 +82,8 @@
#define PREDATOR 2
#define PETREL 3
#define INFO_EVENT_TAG_LOG 38
#define UNDEFINED 0xFFFFFFFF
typedef struct shearwater_predator_parser_t shearwater_predator_parser_t;
@ -759,6 +762,32 @@ shearwater_predator_parser_samples_foreach (dc_parser_t *abstract, dc_sample_cal
if (pnf && data[offset] == LOG_RECORD_FINAL && data[offset + 1] == 0xFD)
break;
if (pnf && data[offset] == LOG_RECORD_INFO_EVENT) {
// additional events defined in PNF
INFO(abstract->context, "PNF INFO_EVENT ID %u time %u W1 %u W2 %u", data[offset + 1],
array_uint32_be (data + offset + 4),
array_uint32_be (data + offset + 8),
array_uint32_be (data + offset + 12));
if (data[offset + 1] == INFO_EVENT_TAG_LOG) {
// this is a TAG
// its time is a unix timestamp, so we need to subtract the dive start time
unsigned int tag_time = array_uint32_be (data + offset + 4) - array_uint32_be (data + parser->opening[0] + 12);
unsigned int tag_heading = array_uint32_be (data + offset + 8);
unsigned int tag_type = array_uint32_be (data + offset + 12);
// heading is only valid if 0..360
// type is only valid if 0..5
if (tag_heading <= 360 && tag_type <= 5) {
// encode this as a bookmark event, using the flags to capture the type and value for heading
sample.event.type = SAMPLE_EVENT_BOOKMARK;
sample.event.time = tag_time;
sample.event.flags = (tag_type + 1) << SAMPLE_FLAGS_TYPE_SHIFT; // 0 means it isn't a tag
sample.event.value = tag_heading;
if (callback) callback (DC_SAMPLE_EVENT, sample, userdata);
}
}
offset += parser->samplesize;
continue;
}
// Ignore blocks that aren't dive samples
if (pnf && data[offset] != LOG_RECORD_DIVE_SAMPLE) {
offset += parser->samplesize;