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Use only 12 bits for the depth.

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The depth is stored with only 12 bits, which results in a maximum depth
of 99.9 meters. The remaining 4 bits are yet unknown, but one of those
bits appears to indicate a larger sample.
This commit is contained in:
Jef Driesen 2010-08-29 15:08:28 +02:00
parent 180321029a
commit a0bb840169
1 changed files with 6 additions and 2 deletions
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8
src/cressi_edy_parser.c
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@ -139,17 +139,21 @@ cressi_edy_parser_samples_foreach (parser_t *abstract, sample_callback_t callbac
if (data[offset] == 0xFF)
break;
unsigned int extra = 0;
if (data[offset] & 0x80)
extra = 4;
// Time (seconds).
time += interval;
sample.time = time;
if (callback) callback (SAMPLE_TYPE_TIME, sample, userdata);
// Depth (1/10 m).
unsigned int depth = bcd2dec (data[offset + 0]) * 100 + bcd2dec (data[offset + 1]);
unsigned int depth = bcd2dec (data[offset + 0] & 0x0F) * 100 + bcd2dec (data[offset + 1]);
sample.depth = depth / 10.0;
if (callback) callback (SAMPLE_TYPE_DEPTH, sample, userdata);
offset += 2;
offset += 2 + extra;
}
return PARSER_STATUS_SUCCESS;