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Code Releases Wiki Activity

Xiaomi: Fix parsing sleep headers

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opcode 2024-01-22 15:59:23 +01:00
parent 1a92bcf8a5
commit 4dbe5744da
1 changed files with 30 additions and 22 deletions
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52
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/impl/SleepDetailsParser.java
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@ -49,11 +49,15 @@ public class SleepDetailsParser extends XiaomiActivityParser {
@Override
public boolean parse(final XiaomiSupport support, final XiaomiActivityFileId fileId, final byte[] bytes) {
// Seems to come both as DetailType.DETAILS (version 2) and DetailType.SUMMARY (version 4)
if (fileId.getVersion() < 2 || fileId.getVersion() > 4) {
if (fileId.getVersion() > 4) {
LOG.warn("Unknown sleep details version {}", fileId.getVersion());
return false;
}
// Stores number of fields which are only present in certain versions of the message
// this is required for correct header offset calculation
int versionDependentFields = 0;
final ByteBuffer buf = ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN);
final byte header = buf.get();
@ -62,6 +66,7 @@ public class SleepDetailsParser extends XiaomiActivityParser {
final int wakeupTime = buf.getInt();
int sleepQuality = -1;
if (fileId.getVersion() >= 4) {
versionDependentFields += 1;
sleepQuality = buf.get() & 0xff;
}
@ -75,36 +80,45 @@ public class SleepDetailsParser extends XiaomiActivityParser {
sample.setIsAwake(isAwake == 1);
// Heart rate samples
if ((header & (1 << 4)) != 0) {
if ((header & (1 << (5 - versionDependentFields))) != 0) {
final int unit = buf.getShort(); // Time unit (i.e sample rate)
final int count = buf.getShort();
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a u8
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count);
if (count > 0) {
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a u8
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count);
}
}
// SpO2 samples
if ((header & (1 << 3)) != 0) {
if ((header & (1 << (4 - versionDependentFields))) != 0) {
final int unit = buf.getShort(); // Time unit (i.e sample rate)
final int count = buf.getShort();
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a u8
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count);
if (count > 0) {
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a u8
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count);
}
}
// snore samples
if (fileId.getVersion() >= 3 && (header & (1 << 2)) != 0) {
if (fileId.getVersion() >= 3 && (header & (1 << (3 - versionDependentFields))) != 0) {
final int unit = buf.getShort(); // Time unit (i.e sample rate)
final int count = buf.getShort();
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a float
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count * 4);
if (count > 0) {
final int firstRecordTime = buf.getInt();
// Skip count samples - each sample is a float
// timestamp of each sample is firstRecordTime + (unit * index)
buf.position(buf.position() + count * 4);
}
}
final List<XiaomiSleepStageSample> stages = new ArrayList<>();
@ -113,12 +127,6 @@ public class SleepDetailsParser extends XiaomiActivityParser {
// and we still want to persist whatever we got so far
boolean stagesParseFailed = false;
try {
// FIXME: Sometimes there's a random zero here..?
if (buf.getInt() != 0) {
// If it wasn't a zero, rewind
buf.position(buf.position() - 4);
}
while (buf.remaining() >= 17 && buf.getInt() == 0xFFFCFAFB) {
final int headerLen = buf.get() & 0xFF; // this seems to always be 17