/*
* Ecg
*/
public static FeMessage createEcg(Ecg ecg, int idx) {
byte body[] = new byte[2 + 50];
System.arraycopy(MessageUtils.shortToBytes(idx), 0, body, 0, 2);
int data[] = ecg.getData();
for (int m = 0; m < data.length; m++) {
System.arraycopy(MessageUtils.shortToBytes(data[m]), 0, body, 2 + 2 * m, 2);
}
return new FeMessage(TYPE_STREAM_ECG_1, body);
}
public Ecg extractEcg(User user) {
int stamp;
int data[];
if (type == FeMessage.TYPE_STREAM_ECG_1
|| type == FeMessage.TYPE_STREAM_ECG_3
|| type == FeMessage.TYPE_STREAM_ECG_12
|| type == FeMessage.TYPE_STREAM_ECG_2) {
stamp = MessageUtils.bytesToUnsignedShort(body, 0);
if (user.getConnectedDevice().getModel() == Device.MODEL_20_3_HI) {
// For 24 bit high resolution
data = new int[(body.length - 2) / 3];
for (int m = 0; m < data.length; m++) {
data[m] = MessageUtils.bytesToDemiInt(body, 2 + 3 * m);
}
} else if (user.getConnectedDevice().getModel() == Device.MODEL_20_3
|| user.getConnectedDevice().getModel() == Device.MODEL_20_1) {
// For 16 bit regular resolution
data = new int[(body.length - 2) / 2];
for (int m = 0; m < data.length; m++) {
data[m] = MessageUtils.bytesToShort(body, 2 + 2 * m);
}
/*
* debug code
*/
// data = new int[(body.length-2)/2];
// for (int m = 0; m < data.length/3; m +=3) {
// int dval = MessageUtils.bytesToShort(body,2+2*m);
// data[m] = user.getLastEcgVal()[0] + dval;
// dval = MessageUtils.bytesToShort(body,2+2*(m+1));
// data[m+1] = user.getLastEcgVal()[1] + dval;
// dval = MessageUtils.bytesToShort(body,2+2*(m+2));
// data[m+2] = user.getLastEcgVal()[2] + dval;
//
// L.i("<TEST> dval = " + Integer.toString(dval));
// user.setLastEcgVal(data[m], data[m+1], data[m+2]);
// }
} else if (user.getConnectedDevice().getModel() == Device.MODEL_20_2_HI) {
// For 24 bit regular resolution
data = new int[(body.length - 2) / 2];
for (int m = 0; m < data.length / 3; m++) {
data[3 * m] = MessageUtils.bytesToDemiInt(body, 2 + 3 * (2 * m));
data[3 * m + 1] = MessageUtils.bytesToDemiInt(body, 2 + 3 * (2 * m + 1));
data[3 * m + 2] = data[3 * m + 1] - data[3 * m];
}
} else {
return null;
}
int ecgType;
if (type == FeMessage.TYPE_STREAM_ECG_1) {
ecgType = Ecg.TYPE_SINGLE;
} else if (type == FeMessage.TYPE_STREAM_ECG_3) {
ecgType = Ecg.TYPE_THREE;
} else if (type == FeMessage.TYPE_STREAM_ECG_12) {
ecgType = Ecg.TYPE_FULL;
} else if (type == FeMessage.TYPE_STREAM_ECG_2) {
ecgType = Ecg.TYPE_THREE;
} else {
ecgType = Ecg.TYPE_SINGLE;
}
// L.i("<FECODER> ecg type = " + Integer.toString(ecgType));
Ecg ecg = new Ecg(ecgType, -1, -1, -1, data);
int stampPrev = user.getStampStreamPrev();
long timePrev = user.getTimeStreamPrev();
Device dev = user.getConnectedDevice();
int sps = dev.getSps();
int streamLen = dev.getStreamLen();
long timediff = streamLen * 1000 / sps;
int stampDiff = stampPrev < stamp ? stamp - stampPrev : 65535 - stampPrev + stamp;
long timeNow = timePrev + stampDiff * timediff;
user.setTimeStreamPrev(timeNow);
user.setStampStreamPrev(stamp);
ecg.setSps(sps);
ecg.setStartTime(timeNow);
ecg.setStopTime(timeNow + timediff);
// L.i("<DATA> sps = " + Integer.toString(sps) + " startT = " +
// Long.toString(timeNow) + " stopT = " + Long.toString(timeNow + timediff));
return ecg;
} else {
return null;
}
}
