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// SPDX-License-Identifier: GPL-2.0
#include "sample.h"
/*
* Adding a cylinder pressure sample field is not quite as trivial as it
* perhaps should be.
*
* We try to keep the same sensor index for the same sensor, so that even
* if the dive computer doesn't give pressure information for every sample,
* we don't move pressure information around between the different sensor
* indices.
*
* The "prepare_sample()" function will always copy the sensor indices
* from the previous sample, so the indices are pre-populated (but the
* pressures obviously are not)
*/
void add_sample_pressure(struct sample *sample, int sensor, int mbar)
{
int idx;
if (!mbar)
return;
/* Do we already have a slot for this sensor */
for (idx = 0; idx < MAX_SENSORS; idx++) {
if (sensor != sample->sensor[idx])
continue;
sample->pressure[idx].mbar = mbar;
return;
}
/* Pick the first unused index if we couldn't reuse one */
for (idx = 0; idx < MAX_SENSORS; idx++) {
if (sample->pressure[idx].mbar)
continue;
sample->sensor[idx] = sensor;
sample->pressure[idx].mbar = mbar;
return;
}
/* We do not have enough slots for the pressure samples. */
/* Should we warn the user about dropping pressure data? */
}
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