114 lines
3.5 KiB
Java
114 lines
3.5 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.service.devices.garmin.fit;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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public class RecordHeader {
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private final boolean definition;
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private final boolean developerData;
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private final LocalMessage localMessage;
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private final int rawLocalMessageType;
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private final Integer timeOffset;
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private long referenceTimestamp;
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public RecordHeader(boolean definition, boolean developerData, LocalMessage localMessage, Integer timeOffset) {
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this.definition = definition;
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this.developerData = developerData;
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this.localMessage = localMessage;
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this.rawLocalMessageType = localMessage.getType();
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this.timeOffset = timeOffset;
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}
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//see https://github.com/polyvertex/fitdecode/blob/master/fitdecode/reader.py#L512
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public RecordHeader(byte header) {
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if ((header & 0x80) == 0x80) { //compressed timestamp TODO add support
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definition = false;
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developerData = false;
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rawLocalMessageType = (header >> 5) & 0x3;
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timeOffset = header & 0x1f;
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} else {
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definition = ((header & 0x40) == 0x40);
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developerData = ((header & 0x20) == 0x20);
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rawLocalMessageType = header & 0xf;
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timeOffset = null;
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}
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localMessage = LocalMessage.fromType(rawLocalMessageType);
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}
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public void setReferenceTimestamp(long referenceTimestamp) {
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this.referenceTimestamp = referenceTimestamp;
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}
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public Integer getTimeOffset() {
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return timeOffset;
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}
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public boolean isCompressedTimestamp() {
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return timeOffset != null;
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}
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public Long getResultingTimestamp() {
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return referenceTimestamp + timeOffset;
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}
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public boolean isDeveloperData() {
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return developerData;
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}
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public boolean isDefinition() {
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return definition;
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}
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@Nullable
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public LocalMessage getLocalMessage() {
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return localMessage;
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}
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public byte generateOutgoingDefinitionPayload() {
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if (!definition && !developerData)
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return (byte) (timeOffset | (((byte) localMessage.getType()) << 5));
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byte base = (byte) (null == localMessage ? rawLocalMessageType : localMessage.getType());
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if (definition)
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base = (byte) (base | 0x40);
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if (developerData)
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base = (byte) (base | 0x20);
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return base;
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}
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public byte generateOutgoingDataPayload() { //TODO: unclear if correct
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if (!definition && !developerData)
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return (byte) (timeOffset | (((byte) localMessage.getType()) << 5));
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byte base = (byte) (null == localMessage ? rawLocalMessageType : localMessage.getType());
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if (developerData)
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base = (byte) (base | 0x20);
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return base;
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}
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@NonNull
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@Override
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public String toString() {
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return "Local Message: " + (null == localMessage ? "raw: " + rawLocalMessageType : "type: " + localMessage.name());
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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RecordHeader that = (RecordHeader) o;
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if (rawLocalMessageType != that.rawLocalMessageType) return false;
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return localMessage == that.localMessage;
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}
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@Override
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public int hashCode() {
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int result = (localMessage != null ? localMessage.hashCode() : 0);
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result = 31 * result + rawLocalMessageType;
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return result;
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}
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}
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