mifr/subsurface
1
0
Fork 0
mirror of https://github.com/subsurface/subsurface.git synced 2024-11-28 05:00:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

Added support for older Cochran models that have configurable sample intervals.

Browse source 
Corrected problem where dive profiles would include post dive
surface interval samples.

Added detection for corrupt dives.

Signed-off-by: John Van Ostrand <john@vanostrand.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
John Van Ostrand 2017-05-26 19:58:06 -04:00 committed by Dirk Hohndel
parent c6bc88b50d
commit f604089ae3
2 changed files with 36 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

65
core/cochran.c
View file

@ -258,14 +258,10 @@ static void cochran_parse_header(const unsigned char *decode, unsigned mod,
static int cochran_predive_event_bytes(unsigned char code)
{
int x = 0;
int gem_event_bytes[15][2] = {{0x00, 10}, {0x02, 17}, {0x08, 18},
{0x09, 18}, {0x0c, 18}, {0x0d, 18},
{0x0e, 18},
{-1, 0}};
int cmdr_event_bytes[15][2] = {{0x00, 16}, {0x01, 20}, {0x02, 17},
{0x03, 16}, {0x06, 18}, {0x07, 18},
{0x08, 18}, {0x09, 18}, {0x0a, 18},
{0x0b, 20}, {0x0c, 18}, {0x0d, 18},
{0x0b, 18}, {0x0c, 18}, {0x0d, 18},
{0x0e, 18}, {0x10, 20},
{-1, 0}};
int emc_event_bytes[15][2] = {{0x00, 18}, {0x01, 22}, {0x02, 19},
@ -276,10 +272,6 @@ static int cochran_predive_event_bytes(unsigned char code)
switch (config.type) {
case TYPE_GEMINI:
while (gem_event_bytes[x][0] != code && gem_event_bytes[x][0] != -1)
x++;
return gem_event_bytes[x][1];
break;
case TYPE_COMMANDER:
while (cmdr_event_bytes[x][0] != code && cmdr_event_bytes[x][0] != -1)
x++;
@ -479,22 +471,20 @@ static void cochran_parse_samples(struct dive *dive, const unsigned char *log,
// Skip past pre-dive events
unsigned int x = 0;
if (samples[x] != 0x40) {
unsigned int c;
while ((samples[x] & 0x80) == 0 && samples[x] != 0x40 && x < size) {
c = cochran_predive_event_bytes(samples[x]) + 1;
#ifdef COCHRAN_DEBUG
printf("Predive event: ", samples[x]);
for (int y = 0; y < c; y++) printf("%02x ", samples[x + y]);
putchar('\n');
#endif
unsigned int c;
while (x < size && (samples[x] & 0x80) == 0 && samples[x] != 0x40) {
c = cochran_predive_event_bytes(samples[x]) + 1;
//#ifdef COCHRAN_DEBUG
printf("Predive event: ", samples[x]);
for (int y = 0; y < c && x + y < size; y++) printf("%02x ", samples[x + y]);
putchar('\n');
//#endif
x += c;
}
}
// Now process samples
offset = x;
while (offset < size) {
while (offset + config.sample_size < size) {
s = samples + offset;
// Start with an empty sample
@ -556,21 +546,25 @@ static void cochran_parse_samples(struct dive *dive, const unsigned char *log,
// Get NDL and deco information
switch (seconds % 24) {
case 20:
if (in_deco) {
// Fist stop time
//first_deco_time = (s[2] + s[5] * 256 + 1) * 60; // seconds
ndl = 0;
} else {
// NDL
ndl = (s[2] + s[5] * 256 + 1) * 60; // seconds
deco_time = 0;
if (offset + 5 < size) {
if (in_deco) {
// Fist stop time
//first_deco_time = (s[2] + s[5] * 256 + 1) * 60; // seconds
ndl = 0;
} else {
// NDL
ndl = (s[2] + s[5] * 256 + 1) * 60; // seconds
deco_time = 0;
}
}
break;
case 22:
if (in_deco) {
// Total stop time
deco_time = (s[2] + s[5] * 256 + 1) * 60; // seconds
ndl = 0;
if (offset + 5 < size) {
if (in_deco) {
// Total stop time
deco_time = (s[2] + s[5] * 256 + 1) * 60; // seconds
ndl = 0;
}
}
break;
}
@ -634,6 +628,13 @@ static void cochran_parse_dive(const unsigned char *decode, unsigned mod,
* scrambled, but there seems to be size differences in the data,
* so this just descrambles part of it:
*/
if (size < 0x4914 + config.logbook_size) {
// Analyst calls this a "Corrupt Beginning Summary"
free(buf);
return;
}
// Decode log entry (512 bytes + random prefix)
partial_decode(0x48ff, 0x4914 + config.logbook_size, decode,
0, mod, in, size, buf);

4
core/cochran.h
View file

@ -5,8 +5,9 @@
#define CMD_DAY 2
#define CMD_MON 5
#define CMD_YEAR 4
#define CME_START_OFFSET 6 // 4 bytes
#define CMD_START_OFFSET 6 // 4 bytes
#define CMD_WATER_CONDUCTIVITY 25 // 1 byte, 0=low, 2=high
#define CMD_PREDIVE_OFFSET 30
#define CMD_START_SGC 42 // 2 bytes
#define CMD_START_TEMP 45 // 1 byte, F
#define CMD_START_DEPTH 56 // 2 bytes, /4=ft
@ -30,6 +31,7 @@
#define EMC_YEAR 5
#define EMC_START_OFFSET 6 // 4 bytes
#define EMC_WATER_CONDUCTIVITY 24 // 1 byte bits 0:1, 0=low, 2=high
#define EMC_PREDIVE_OFFSET 30
#define EMC_START_DEPTH 42 // 2 byte, /256=ft
#define EMC_START_TEMP 55 // 1 byte, F
#define EMC_SIT 84 // 2 bytes, minutes, LE