// copy the tanks from the current dive, or the default cylinder
// or an unknown cylinder
// setup the cylinder widget accordingly
void DivePlannerPointsModel::setupCylinders()
{
int i;
if (mode == PLAN && current_dive) {
// take the displayed cylinders from the selected dive as starting point
CylindersModel::instance()->copyFromDive(current_dive);
copy_cylinders(current_dive, &displayed_dive, !prefs.display_unused_tanks);
reset_cylinders(&displayed_dive, true);
for (i = 0; i < MAX_CYLINDERS; i++)
if (!cylinder_none(&(displayed_dive.cylinder[i])))
return; // We have at least one cylinder
}
if (!same_string(prefs.default_cylinder, "")) {
fill_default_cylinder(&displayed_dive.cylinder[0]);
}
if (cylinder_none(&displayed_dive.cylinder[0])) {
// roughly an AL80
displayed_dive.cylinder[0].type.description = strdup(tr("unknown").toUtf8().constData());
displayed_dive.cylinder[0].type.size.mliter = 11100;
displayed_dive.cylinder[0].type.workingpressure.mbar = 207000;
}
reset_cylinders(&displayed_dive, false);
CylindersModel::instance()->copyFromDive(&displayed_dive);
}
bool DivePlannerPointsModel::addGas(struct gasmix mix)
{
sanitize_gasmix(&mix);
for (int i = 0; i < MAX_CYLINDERS; i++) {
cylinder_t *cyl = &displayed_dive.cylinder[i];
if (cylinder_nodata(cyl)) {
fill_default_cylinder(cyl);
cyl->gasmix = mix;
/* The depth to change to that gas is given by the depth where its pO₂ is 1.6 bar.
* The user should be able to change this depth manually. */
pressure_t modpO2;
modpO2.mbar = prefs.decopo2;
cyl->depth = gas_mod(&mix, modpO2, M_OR_FT(3,10));
// FIXME -- need to get rid of stagingDIve
// the following now uses displayed_dive !!!!
CylindersModel::instance()->updateDive();
return true;
}
if (!gasmix_distance(&cyl->gasmix, &mix))
return true;
}
qDebug("too many gases");
return false;
}
void CylindersModel::add()
{
if (rows >= MAX_CYLINDERS) {
return;
}
int row = rows;
fill_default_cylinder(¤t->cylinder[row]);
beginInsertRows(QModelIndex(), row, row);
rows++;
changed = true;
endInsertRows();
}
void CylindersModel::add()
{
if (rows >= MAX_CYLINDERS) {
return;
}
int row = rows;
fill_default_cylinder(&displayed_dive.cylinder[row]);
displayed_dive.cylinder[row].manually_added = true;
beginInsertRows(QModelIndex(), row, row);
rows++;
changed = true;
endInsertRows();
}
// copy the tanks from the current dive, or the default cylinder
// or an unknown cylinder
// setup the cylinder widget accordingly
void DivePlannerPointsModel::setupCylinders()
{
if (mode == PLAN && current_dive) {
// take the used cylinders from the selected dive as starting point
CylindersModel::instance()->copyFromDive(current_dive);
copy_cylinders(current_dive, &displayed_dive, true);
reset_cylinders(&displayed_dive, true);
return;
}
if (!same_string(prefs.default_cylinder, "")) {
fill_default_cylinder(&displayed_dive.cylinder[0]);
} else {
// roughly an AL80
displayed_dive.cylinder[0].type.description = strdup(tr("unknown").toUtf8().constData());
displayed_dive.cylinder[0].type.size.mliter = 11100;
displayed_dive.cylinder[0].type.workingpressure.mbar = 207000;
}
reset_cylinders(&displayed_dive, false);
CylindersModel::instance()->copyFromDive(&displayed_dive);
}
static void cochran_parse_dive(const unsigned char *decode, unsigned mod,
const unsigned char *in, unsigned size,
struct dive_table *table)
{
unsigned char *buf = malloc(size);
struct dive *dive;
struct divecomputer *dc;
struct tm tm = {0};
uint32_t csum[5];
double max_depth, avg_depth, min_temp;
unsigned int duration = 0, corrupt_dive = 0;
/*
* The scrambling has odd boundaries. I think the boundaries
* match some data structure size, but I don't know. They were
* discovered the same way we dynamically discover the decode
* size: automatically looking for least random output.
*
* The boundaries are also this confused "off-by-one" thing,
* the same way the file size is off by one. It's as if the
* cochran software forgot to write one byte at the beginning.
*/
partial_decode(0, 0x0fff, decode, 1, mod, in, size, buf);
partial_decode(0x0fff, 0x1fff, decode, 0, mod, in, size, buf);
partial_decode(0x1fff, 0x2fff, decode, 0, mod, in, size, buf);
partial_decode(0x2fff, 0x48ff, decode, 0, mod, in, size, buf);
/*
* This is not all the descrambling you need - the above are just
* what appears to be the fixed-size blocks. The rest is also
* 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);
unsigned int sample_size = size - 0x4914 - config.logbook_size;
int g;
unsigned int sample_pre_offset = 0, sample_end_offset = 0;
// Decode sample data
partial_decode(0x4914 + config.logbook_size, size, decode,
0, mod, in, size, buf);
#ifdef COCHRAN_DEBUG
// Display pre-logbook data
puts("\nPre Logbook Data\n");
cochran_debug_write(buf, 0x4914);
// Display log book
puts("\nLogbook Data\n");
cochran_debug_write(buf + 0x4914, config.logbook_size + 0x400);
// Display sample data
puts("\nSample Data\n");
#endif
dive = alloc_dive();
dc = &dive->dc;
unsigned char *log = (buf + 0x4914);
switch (config.type) {
case TYPE_GEMINI:
case TYPE_COMMANDER:
if (config.type == TYPE_GEMINI) {
dc->model = "Gemini";
dc->deviceid = buf[0x18c] * 256 + buf[0x18d]; // serial no
fill_default_cylinder(&dive->cylinder[0]);
dive->cylinder[0].gasmix.o2.permille = (log[CMD_O2_PERCENT] / 256
+ log[CMD_O2_PERCENT + 1]) * 10;
dive->cylinder[0].gasmix.he.permille = 0;
} else {
dc->model = "Commander";
dc->deviceid = array_uint32_le(buf + 0x31e); // serial no
for (g = 0; g < 2; g++) {
fill_default_cylinder(&dive->cylinder[g]);
dive->cylinder[g].gasmix.o2.permille = (log[CMD_O2_PERCENT + g * 2] / 256
+ log[CMD_O2_PERCENT + g * 2 + 1]) * 10;
dive->cylinder[g].gasmix.he.permille = 0;
}
}
tm.tm_year = log[CMD_YEAR];
tm.tm_mon = log[CMD_MON] - 1;
tm.tm_mday = log[CMD_DAY];
tm.tm_hour = log[CMD_HOUR];
tm.tm_min = log[CMD_MIN];
tm.tm_sec = log[CMD_SEC];
tm.tm_isdst = -1;
dive->when = dc->when = utc_mktime(&tm);
dive->number = log[CMD_NUMBER] + log[CMD_NUMBER + 1] * 256 + 1;
dc->duration.seconds = (log[CMD_BT] + log[CMD_BT + 1] * 256) * 60;
dc->surfacetime.seconds = (log[CMD_SIT] + log[CMD_SIT + 1] * 256) * 60;
dc->maxdepth.mm = lrint((log[CMD_MAX_DEPTH] +
log[CMD_MAX_DEPTH + 1] * 256) / 4 * FEET * 1000);
dc->meandepth.mm = lrint((log[CMD_AVG_DEPTH] +
log[CMD_AVG_DEPTH + 1] * 256) / 4 * FEET * 1000);
dc->watertemp.mkelvin = C_to_mkelvin((log[CMD_MIN_TEMP] / 32) - 1.8);
dc->surface_pressure.mbar = lrint(ATM / BAR * pow(1 - 0.0000225577
* (double) log[CMD_ALTITUDE] * 250 * FEET, 5.25588) * 1000);
dc->salinity = 10000 + 150 * log[CMD_WATER_CONDUCTIVITY];
SHA1(log + CMD_NUMBER, 2, (unsigned char *)csum);
dc->diveid = csum[0];
if (log[CMD_MAX_DEPTH] == 0xff && log[CMD_MAX_DEPTH + 1] == 0xff)
corrupt_dive = 1;
sample_pre_offset = array_uint32_le(log + CMD_PREDIVE_OFFSET);
sample_end_offset = array_uint32_le(log + CMD_END_OFFSET);
break;
case TYPE_EMC:
dc->model = "EMC";
dc->deviceid = array_uint32_le(buf + 0x31e); // serial no
for (g = 0; g < 4; g++) {
fill_default_cylinder(&dive->cylinder[g]);
dive->cylinder[g].gasmix.o2.permille =
(log[EMC_O2_PERCENT + g * 2] / 256
+ log[EMC_O2_PERCENT + g * 2 + 1]) * 10;
dive->cylinder[g].gasmix.he.permille =
(log[EMC_HE_PERCENT + g * 2] / 256
+ log[EMC_HE_PERCENT + g * 2 + 1]) * 10;
}
tm.tm_year = log[EMC_YEAR];
tm.tm_mon = log[EMC_MON] - 1;
tm.tm_mday = log[EMC_DAY];
tm.tm_hour = log[EMC_HOUR];
tm.tm_min = log[EMC_MIN];
tm.tm_sec = log[EMC_SEC];
tm.tm_isdst = -1;
dive->when = dc->when = utc_mktime(&tm);
dive->number = log[EMC_NUMBER] + log[EMC_NUMBER + 1] * 256 + 1;
dc->duration.seconds = (log[EMC_BT] + log[EMC_BT + 1] * 256) * 60;
dc->surfacetime.seconds = (log[EMC_SIT] + log[EMC_SIT + 1] * 256) * 60;
dc->maxdepth.mm = lrint((log[EMC_MAX_DEPTH] +
log[EMC_MAX_DEPTH + 1] * 256) / 4 * FEET * 1000);
dc->meandepth.mm = lrint((log[EMC_AVG_DEPTH] +
log[EMC_AVG_DEPTH + 1] * 256) / 4 * FEET * 1000);
dc->watertemp.mkelvin = C_to_mkelvin((log[EMC_MIN_TEMP] - 32) / 1.8);
dc->surface_pressure.mbar = lrint(ATM / BAR * pow(1 - 0.0000225577
* (double) log[EMC_ALTITUDE] * 250 * FEET, 5.25588) * 1000);
dc->salinity = 10000 + 150 * (log[EMC_WATER_CONDUCTIVITY] & 0x3);
SHA1(log + EMC_NUMBER, 2, (unsigned char *)csum);
dc->diveid = csum[0];
if (log[EMC_MAX_DEPTH] == 0xff && log[EMC_MAX_DEPTH + 1] == 0xff)
corrupt_dive = 1;
sample_pre_offset = array_uint32_le(log + EMC_PREDIVE_OFFSET);
sample_end_offset = array_uint32_le(log + EMC_END_OFFSET);
break;
}
// Use the log information to determine actual profile sample size
// Otherwise we will get surface time at end of dive.
if (sample_pre_offset < sample_end_offset && sample_end_offset != 0xffffffff)
sample_size = sample_end_offset - sample_pre_offset;
cochran_parse_samples(dive, buf + 0x4914, buf + 0x4914
+ config.logbook_size, sample_size,
&duration, &max_depth, &avg_depth, &min_temp);
// Check for corrupt dive
if (corrupt_dive) {
dc->maxdepth.mm = lrint(max_depth * FEET * 1000);
dc->meandepth.mm = lrint(avg_depth * FEET * 1000);
dc->watertemp.mkelvin = C_to_mkelvin((min_temp - 32) / 1.8);
dc->duration.seconds = duration;
}
record_dive_to_table(dive, table);
mark_divelist_changed(true);
free(buf);
}
