Merge changes I732f0e78,I7a8f668c,I1f439621,I55122a7b,I83c43497, ... am: d318d93dd5 am: bad1cba5f0

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1457564

Change-Id: I5c8819a4061c0c7746ecb1d3a19c806aa50cd5fe

core/java/android/uwb/AngleMeasurement.java

@@ -27,6 +27,16 @@ import android.annotation.FloatRange;
  * @hide
  */
 public final class AngleMeasurement {
+    private final double mRadians;
+    private final double mErrorRadians;
+    private final double mConfidenceLevel;
+
+    private AngleMeasurement(double radians, double errorRadians, double confidenceLevel) {
+        mRadians = radians;
+        mErrorRadians = errorRadians;
+        mConfidenceLevel = confidenceLevel;
+    }
+
     /**
      * Angle measurement in radians
     *
@@ -34,7 +44,7 @@ public final class AngleMeasurement {
      */
     @FloatRange(from = -Math.PI, to = +Math.PI)
     public double getRadians() {
-        throw new UnsupportedOperationException();
+        return mRadians;
     }
 
     /**
@@ -46,7 +56,7 @@ public final class AngleMeasurement {
      */
     @FloatRange(from = 0.0, to = +Math.PI)
     public double getErrorRadians() {
-        throw new UnsupportedOperationException();
+        return mErrorRadians;
     }
 
     /**
@@ -60,6 +70,80 @@ public final class AngleMeasurement {
      */
     @FloatRange(from = 0.0, to = 1.0)
     public double getConfidenceLevel() {
-        throw new UnsupportedOperationException();
+        return mConfidenceLevel;
+    }
+
+    /**
+     * Builder class for {@link AngleMeasurement}.
+     */
+    public static final class Builder {
+        private double mRadians = Double.NaN;
+        private double mErrorRadians = Double.NaN;
+        private double mConfidenceLevel = Double.NaN;
+
+        /**
+         * Set the angle in radians
+         *
+         * @param radians angle in radians
+         * @throws IllegalArgumentException if angle exceeds allowed limits of [-Math.PI, +Math.PI]
+         */
+        public Builder setRadians(double radians) {
+            if (radians < -Math.PI || radians > Math.PI) {
+                throw new IllegalArgumentException("Invalid radians: " + radians);
+            }
+            mRadians = radians;
+            return this;
+        }
+
+        /**
+         * Set the angle error in radians
+         *
+         * @param errorRadians error of the angle in radians
+         * @throws IllegalArgumentException if the error exceeds the allowed limits of [0, +Math.PI]
+         */
+        public Builder setErrorRadians(double errorRadians) {
+            if (errorRadians < 0.0 || errorRadians > Math.PI) {
+                throw new IllegalArgumentException(
+                        "Invalid error radians: " + errorRadians);
+            }
+            mErrorRadians = errorRadians;
+            return this;
+        }
+
+        /**
+         * Set the angle confidence level
+         *
+         * @param confidenceLevel level of confidence of the angle measurement
+         * @throws IllegalArgumentException if the error exceeds the allowed limits of [0.0, 1.0]
+         */
+        public Builder setConfidenceLevel(double confidenceLevel) {
+            if (confidenceLevel < 0.0 || confidenceLevel > 1.0) {
+                throw new IllegalArgumentException(
+                        "Invalid confidence level: " + confidenceLevel);
+            }
+            mConfidenceLevel = confidenceLevel;
+            return this;
+        }
+
+        /**
+         * Build the {@link AngleMeasurement} object
+         *
+         * @throws IllegalStateException if angle, error, or confidence values are missing
+         */
+        public AngleMeasurement build() {
+            if (Double.isNaN(mRadians)) {
+                throw new IllegalStateException("Angle is not set");
+            }
+
+            if (Double.isNaN(mErrorRadians)) {
+                throw new IllegalStateException("Angle error is not set");
+            }
+
+            if (Double.isNaN(mConfidenceLevel)) {
+                throw new IllegalStateException("Angle confidence level is not set");
+            }
+
+            return new AngleMeasurement(mRadians, mErrorRadians, mConfidenceLevel);
+        }
     }
 }

core/java/android/uwb/AngleOfArrivalMeasurement.java

@@ -25,6 +25,15 @@ import android.annotation.Nullable;
  * @hide
  */
 public final class AngleOfArrivalMeasurement {
+    private final AngleMeasurement mAzimuthAngleMeasurement;
+    private final AngleMeasurement mAltitudeAngleMeasurement;
+
+    private AngleOfArrivalMeasurement(@NonNull AngleMeasurement azimuthAngleMeasurement,
+            @Nullable AngleMeasurement altitudeAngleMeasurement) {
+        mAzimuthAngleMeasurement = azimuthAngleMeasurement;
+        mAltitudeAngleMeasurement = altitudeAngleMeasurement;
+    }
+
     /**
      * Azimuth angle measurement
      * <p>Azimuth {@link AngleMeasurement} of remote device in horizontal coordinate system, this is
@@ -41,7 +50,7 @@ public final class AngleOfArrivalMeasurement {
      */
     @NonNull
     public AngleMeasurement getAzimuth() {
-        throw new UnsupportedOperationException();
+        return mAzimuthAngleMeasurement;
     }
 
     /**
@@ -58,6 +67,48 @@ public final class AngleOfArrivalMeasurement {
      */
     @Nullable
     public AngleMeasurement getAltitude() {
-        throw new UnsupportedOperationException();
+        return mAltitudeAngleMeasurement;
+    }
+
+    /**
+     * Builder class for {@link AngleOfArrivalMeasurement}.
+     */
+    public static final class Builder {
+        private AngleMeasurement mAzimuthAngleMeasurement = null;
+        private AngleMeasurement mAltitudeAngleMeasurement = null;
+
+        /**
+         * Set the azimuth angle
+         *
+         * @param azimuthAngle azimuth angle
+         */
+        public Builder setAzimuthAngleMeasurement(@NonNull AngleMeasurement azimuthAngle) {
+            mAzimuthAngleMeasurement = azimuthAngle;
+            return this;
+        }
+
+        /**
+         * Set the altitude angle
+         *
+         * @param altitudeAngle altitude angle
+         */
+        public Builder setAltitudeAngleMeasurement(@NonNull AngleMeasurement altitudeAngle) {
+            mAltitudeAngleMeasurement = altitudeAngle;
+            return this;
+        }
+
+        /**
+         * Build the {@link AngleOfArrivalMeasurement} object
+         *
+         * @throws IllegalStateException if the required azimuth angle is not provided
+         */
+        public AngleOfArrivalMeasurement build() {
+            if (mAzimuthAngleMeasurement == null) {
+                throw new IllegalStateException("Azimuth angle measurement is not set");
+            }
+
+            return new AngleOfArrivalMeasurement(mAzimuthAngleMeasurement,
+                    mAltitudeAngleMeasurement);
+        }
     }
 }

core/java/android/uwb/DistanceMeasurement.java

@@ -27,13 +27,23 @@ import android.annotation.FloatRange;
  * @hide
  */
 public final class DistanceMeasurement {
+    private final double mMeters;
+    private final double mErrorMeters;
+    private final double mConfidenceLevel;
+
+    private DistanceMeasurement(double meters, double errorMeters, double confidenceLevel) {
+        mMeters = meters;
+        mErrorMeters = errorMeters;
+        mConfidenceLevel = confidenceLevel;
+    }
+
     /**
      * Distance measurement in meters
      *
      * @return distance in meters
      */
     public double getMeters() {
-        throw new UnsupportedOperationException();
+        return mMeters;
     }
 
     /**
@@ -43,7 +53,7 @@ public final class DistanceMeasurement {
      * @return error of distance measurement in meters
      */
     public double getErrorMeters() {
-        throw new UnsupportedOperationException();
+        return mErrorMeters;
     }
 
     /**
@@ -56,6 +66,80 @@ public final class DistanceMeasurement {
      */
     @FloatRange(from = 0.0, to = 1.0)
     public double getConfidenceLevel() {
-        throw new UnsupportedOperationException();
+        return mConfidenceLevel;
+    }
+
+    /**
+     * Builder to get a {@link DistanceMeasurement} object.
+     */
+    public static final class Builder {
+        private double mMeters = Double.NaN;
+        private double mErrorMeters = Double.NaN;
+        private double mConfidenceLevel = Double.NaN;
+
+        /**
+         * Set the distance measurement in meters
+         *
+         * @param meters distance in meters
+         * @throws IllegalArgumentException if meters is NaN
+         */
+        public Builder setMeters(double meters) {
+            if (Double.isNaN(meters)) {
+                throw new IllegalArgumentException("meters cannot be NaN");
+            }
+            mMeters = meters;
+            return this;
+        }
+
+        /**
+         * Set the distance error in meters
+         *
+         * @param errorMeters distance error in meters
+         * @throws IllegalArgumentException if error is negative or NaN
+         */
+        public Builder setErrorMeters(double errorMeters) {
+            if (Double.isNaN(errorMeters) || errorMeters < 0.0) {
+                throw new IllegalArgumentException(
+                        "errorMeters must be >= 0.0 and not NaN: " + errorMeters);
+            }
+            mErrorMeters = errorMeters;
+            return this;
+        }
+
+        /**
+         * Set the confidence level
+         *
+         * @param confidenceLevel the confidence level in the distance measurement
+         * @throws IllegalArgumentException if confidence level is not in the range of [0.0, 1.0]
+         */
+        public Builder setConfidenceLevel(double confidenceLevel) {
+            if (confidenceLevel < 0.0 || confidenceLevel > 1.0) {
+                throw new IllegalArgumentException(
+                        "confidenceLevel must be in the range [0.0, 1.0]: " + confidenceLevel);
+            }
+            mConfidenceLevel = confidenceLevel;
+            return this;
+        }
+
+        /**
+         * Builds the {@link DistanceMeasurement} object
+         *
+         * @throws IllegalStateException if meters, error, or confidence are not set
+         */
+        public DistanceMeasurement build() {
+            if (Double.isNaN(mMeters)) {
+                throw new IllegalStateException("Meters cannot be NaN");
+            }
+
+            if (Double.isNaN(mErrorMeters)) {
+                throw new IllegalStateException("Error meters cannot be NaN");
+            }
+
+            if (Double.isNaN(mConfidenceLevel)) {
+                throw new IllegalStateException("Confidence level cannot be NaN");
+            }
+
+            return new DistanceMeasurement(mMeters, mErrorMeters, mConfidenceLevel);
+        }
     }
 }

core/java/android/uwb/RangingMeasurement.java

@@ -31,6 +31,22 @@ import java.lang.annotation.RetentionPolicy;
  * @hide
  */
 public final class RangingMeasurement {
+    private final UwbAddress mRemoteDeviceAddress;
+    private final @Status int mStatus;
+    private final long mElapsedRealtimeNanos;
+    private final DistanceMeasurement mDistanceMeasurement;
+    private final AngleOfArrivalMeasurement mAngleOfArrivalMeasurement;
+
+    private RangingMeasurement(@NonNull UwbAddress remoteDeviceAddress, @Status int status,
+            long elapsedRealtimeNanos, @Nullable DistanceMeasurement distanceMeasurement,
+            @Nullable AngleOfArrivalMeasurement angleOfArrivalMeasurement) {
+        mRemoteDeviceAddress = remoteDeviceAddress;
+        mStatus = status;
+        mElapsedRealtimeNanos = elapsedRealtimeNanos;
+        mDistanceMeasurement = distanceMeasurement;
+        mAngleOfArrivalMeasurement = angleOfArrivalMeasurement;
+    }
+
     /**
      * Get the remote device's {@link UwbAddress}
      *
@@ -38,7 +54,7 @@ public final class RangingMeasurement {
      */
     @NonNull
     public UwbAddress getRemoteDeviceAddress() {
-        throw new UnsupportedOperationException();
+        return mRemoteDeviceAddress;
     }
 
     @Retention(RetentionPolicy.SOURCE)
@@ -75,7 +91,7 @@ public final class RangingMeasurement {
      */
     @Status
     public int getStatus() {
-        throw new UnsupportedOperationException();
+        return mStatus;
     }
 
     /**
@@ -86,7 +102,7 @@ public final class RangingMeasurement {
      */
     @SuppressLint("MethodNameUnits")
     public long getElapsedRealtimeNanos() {
-        throw new UnsupportedOperationException();
+        return mElapsedRealtimeNanos;
     }
 
     /**
@@ -97,7 +113,7 @@ public final class RangingMeasurement {
      */
     @Nullable
     public DistanceMeasurement getDistance() {
-        throw new UnsupportedOperationException();
+        return mDistanceMeasurement;
     }
 
     /**
@@ -108,6 +124,106 @@ public final class RangingMeasurement {
      */
     @Nullable
     public AngleOfArrivalMeasurement getAngleOfArrival() {
-        throw new UnsupportedOperationException();
+        return mAngleOfArrivalMeasurement;
+    }
+
+    /**
+     * Builder for a {@link RangingMeasurement} object.
+     */
+    public static final class Builder {
+        private UwbAddress mRemoteDeviceAddress = null;
+        private @Status int mStatus = RANGING_STATUS_FAILURE_UNKNOWN_ERROR;
+        private long mElapsedRealtimeNanos = -1L;
+        private DistanceMeasurement mDistanceMeasurement = null;
+        private AngleOfArrivalMeasurement mAngleOfArrivalMeasurement = null;
+
+        /**
+         * Set the remote device address that this measurement is for
+         *
+         * @param remoteDeviceAddress remote device's address
+         */
+        public Builder setRemoteDeviceAddress(@NonNull UwbAddress remoteDeviceAddress) {
+            mRemoteDeviceAddress = remoteDeviceAddress;
+            return this;
+        }
+
+        /**
+         * Set the status of ranging measurement
+         *
+         * @param status the status of the ranging measurement
+         */
+        public Builder setStatus(@Status int status) {
+            mStatus = status;
+            return this;
+        }
+
+        /**
+         * Set the elapsed realtime in nanoseconds when the ranging measurement occurred
+         *
+         * @param elapsedRealtimeNanos time the ranging measurement occurred
+         */
+        public Builder setElapsedRealtimeNanos(long elapsedRealtimeNanos) {
+            if (elapsedRealtimeNanos < 0) {
+                throw new IllegalArgumentException("elapsedRealtimeNanos must be >= 0");
+            }
+            mElapsedRealtimeNanos = elapsedRealtimeNanos;
+            return this;
+        }
+
+        /**
+         * Set the {@link DistanceMeasurement}
+         *
+         * @param distanceMeasurement the distance measurement for this ranging measurement
+         */
+        public Builder setDistanceMeasurement(@NonNull DistanceMeasurement distanceMeasurement) {
+            mDistanceMeasurement = distanceMeasurement;
+            return this;
+        }
+
+        /**
+         * Set the {@link AngleOfArrivalMeasurement}
+         *
+         * @param angleOfArrivalMeasurement the angle of arrival measurement for this ranging
+         *                                  measurement
+         */
+        public Builder setAngleOfArrivalMeasurement(
+                @NonNull AngleOfArrivalMeasurement angleOfArrivalMeasurement) {
+            mAngleOfArrivalMeasurement = angleOfArrivalMeasurement;
+            return this;
+        }
+
+        /**
+         * Build the {@link RangingMeasurement} object
+         *
+         * @throws IllegalStateException if a distance or angle of arrival measurement is provided
+         *                               but the measurement was not successful, if the
+         *                               elapsedRealtimeNanos of the measurement is invalid, or
+         *                               if no remote device address is set
+         */
+        public RangingMeasurement build() {
+            if (mStatus != RANGING_STATUS_SUCCESS) {
+                if (mDistanceMeasurement != null) {
+                    throw new IllegalStateException(
+                            "Distance Measurement must be null if ranging is not successful");
+                }
+
+                if (mAngleOfArrivalMeasurement != null) {
+                    throw new IllegalStateException(
+                            "Angle of Arrival must be null if ranging is not successful");
+                }
+            }
+
+            if (mRemoteDeviceAddress == null) {
+                throw new IllegalStateException("No remote device address was set");
+            }
+
+            if (mElapsedRealtimeNanos < 0) {
+                throw new IllegalStateException(
+                        "elapsedRealtimeNanos must be >=0: " + mElapsedRealtimeNanos);
+            }
+
+            return new RangingMeasurement(mRemoteDeviceAddress, mStatus, mElapsedRealtimeNanos,
+                    mDistanceMeasurement, mAngleOfArrivalMeasurement);
+        }
     }
 }

core/java/android/uwb/RangingParams.java

@@ -24,7 +24,11 @@ import android.util.Duration;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 /**
  * An object used when requesting to open a new {@link RangingSession}.
@@ -33,11 +37,33 @@ import java.util.List;
  *  @hide
  */
 public final class RangingParams {
-    /**
-     * Standard builder interface as the class is not modifiable
-     */
-    public static class Builder {
-        // TODO implement
+    private final boolean mIsInitiator;
+    private final boolean mIsController;
+    private final Duration mSamplePeriod;
+    private final UwbAddress mLocalDeviceAddress;
+    private final List<UwbAddress> mRemoteDeviceAddresses;
+    private final int mChannelNumber;
+    private final int mTransmitPreambleCodeIndex;
+    private final int mReceivePreambleCodeIndex;
+    private final int mStsPhyPacketType;
+    private final PersistableBundle mSpecificationParameters;
+
+    private RangingParams(boolean isInitiator, boolean isController,
+            @NonNull Duration samplingPeriod, @NonNull UwbAddress localDeviceAddress,
+            @NonNull List<UwbAddress> remoteDeviceAddresses, int channelNumber,
+            int transmitPreambleCodeIndex, int receivePreambleCodeIndex,
+            @StsPhyPacketType int stsPhyPacketType,
+            @NonNull PersistableBundle specificationParameters) {
+        mIsInitiator = isInitiator;
+        mIsController = isController;
+        mSamplePeriod = samplingPeriod;
+        mLocalDeviceAddress = localDeviceAddress;
+        mRemoteDeviceAddresses = remoteDeviceAddresses;
+        mChannelNumber = channelNumber;
+        mTransmitPreambleCodeIndex = transmitPreambleCodeIndex;
+        mReceivePreambleCodeIndex = receivePreambleCodeIndex;
+        mStsPhyPacketType = stsPhyPacketType;
+        mSpecificationParameters = specificationParameters;
     }
 
     /**
@@ -46,7 +72,7 @@ public final class RangingParams {
      * @return true if the device is the initiator
      */
     public boolean isInitiator() {
-        throw new UnsupportedOperationException();
+        return mIsInitiator;
     }
 
     /**
@@ -55,7 +81,7 @@ public final class RangingParams {
      * @return true if the device is the controller
      */
     public boolean isController() {
-        throw new UnsupportedOperationException();
+        return mIsController;
     }
 
     /**
@@ -65,7 +91,7 @@ public final class RangingParams {
      */
     @NonNull
     public Duration getSamplingPeriod() {
-        throw new UnsupportedOperationException();
+        return mSamplePeriod;
     }
 
     /**
@@ -78,7 +104,7 @@ public final class RangingParams {
      */
     @NonNull
     public UwbAddress getLocalDeviceAddress() {
-        throw new UnsupportedOperationException();
+        return mLocalDeviceAddress;
     }
 
     /**
@@ -88,7 +114,7 @@ public final class RangingParams {
      */
     @NonNull
     public List<UwbAddress> getRemoteDeviceAddresses() {
-        throw new UnsupportedOperationException();
+        return mRemoteDeviceAddresses;
     }
 
     /**
@@ -99,7 +125,7 @@ public final class RangingParams {
      * @return the channel to use
      */
     public int getChannelNumber() {
-        throw new UnsupportedOperationException();
+        return mChannelNumber;
     }
 
     /**
@@ -110,7 +136,7 @@ public final class RangingParams {
      * @return the preamble index to use for transmitting
      */
     public int getTxPreambleIndex() {
-        throw new UnsupportedOperationException();
+        return mTransmitPreambleCodeIndex;
     }
 
     /**
@@ -121,7 +147,7 @@ public final class RangingParams {
      * @return the preamble index to use for receiving
      */
     public int getRxPreambleIndex() {
-        throw new UnsupportedOperationException();
+        return mReceivePreambleCodeIndex;
     }
 
     @Retention(RetentionPolicy.SOURCE)
@@ -159,7 +185,7 @@ public final class RangingParams {
      */
     @StsPhyPacketType
     public int getStsPhyPacketType() {
-        throw new UnsupportedOperationException();
+        return mStsPhyPacketType;
     }
 
     /**
@@ -167,9 +193,189 @@ public final class RangingParams {
      *
      * <p>Android reserves the '^android.*' namespace
      *
-     * @return a {@link PersistableBundle} of protocol specific parameters
+     * @return a {@link PersistableBundle} copy of protocol specific parameters
      */
     public @Nullable PersistableBundle getSpecificationParameters() {
-        throw new UnsupportedOperationException();
+        return new PersistableBundle(mSpecificationParameters);
+    }
+
+    /**
+     * Builder class for {@link RangingParams}.
+     */
+    public static final class Builder {
+        private boolean mIsInitiator = false;
+        private boolean mIsController = false;
+        private Duration mSamplePeriod = null;
+        private UwbAddress mLocalDeviceAddress = null;
+        private List<UwbAddress> mRemoteDeviceAddresses = new ArrayList<>();
+        private int mChannelNumber = 0;
+        private int mTransmitPreambleCodeIndex = 0;
+        private int mReceivePreambleCodeIndex = 0;
+        private int mStsPhyPacketType = STS_PHY_PACKET_TYPE_SP0;
+        private PersistableBundle mSpecificationParameters = new PersistableBundle();
+
+        /**
+         * Set whether the device is the initiator or responder as defined by IEEE 802.15.4z
+         *
+         * @param isInitiator whether the device is the initiator (true) or responder (false)
+         */
+        public Builder setIsInitiator(boolean isInitiator) {
+            mIsInitiator = isInitiator;
+            return this;
+        }
+
+        /**
+         * Set whether the local device is the controller or controlee as defined by IEEE 802.15.4z
+         *
+         * @param isController whether the device is the controller (true) or controlee (false)
+         */
+        public Builder setIsController(boolean isController) {
+            mIsController = isController;
+            return this;
+        }
+
+        /**
+         * Set the time between ranging samples
+         *
+         * @param samplePeriod the time between ranging samples
+         */
+        public Builder setSamplePeriod(@NonNull Duration samplePeriod) {
+            mSamplePeriod = samplePeriod;
+            return this;
+        }
+
+        /**
+         * Set the local device address
+         *
+         * @param localDeviceAddress the local device's address for the {@link RangingSession}
+         */
+        public Builder setLocalDeviceAddress(@NonNull UwbAddress localDeviceAddress) {
+            mLocalDeviceAddress = localDeviceAddress;
+            return this;
+        }
+
+        /**
+         * Add a remote device's address to the ranging session
+         *
+         * @param remoteDeviceAddress a remote device's address for the {@link RangingSession}
+         * @throws IllegalArgumentException if {@code remoteDeviceAddress} is already present.
+         */
+        public Builder addRemoteDeviceAddress(@NonNull UwbAddress remoteDeviceAddress) {
+            if (mRemoteDeviceAddresses.contains(remoteDeviceAddress)) {
+                throw new IllegalArgumentException(
+                        "Remote device address already added: " + remoteDeviceAddress.toString());
+            }
+            mRemoteDeviceAddresses.add(remoteDeviceAddress);
+            return this;
+        }
+
+        /**
+         * Set the IEEE 802.15.4z channel to use for the {@link RangingSession}
+         * <p>Valid values are in the range [-1, 15]
+         *
+         * @param channelNumber the channel to use for the {@link RangingSession}
+         * @throws IllegalArgumentException if {@code channelNumber} is invalid.
+         */
+        public Builder setChannelNumber(int channelNumber) {
+            if (channelNumber < -1 || channelNumber > 15) {
+                throw new IllegalArgumentException("Invalid channel number");
+            }
+            mChannelNumber = channelNumber;
+            return this;
+        }
+
+        private static final Set<Integer> VALID_TX_PREAMBLE_CODES = new HashSet<Integer>(
+                Arrays.asList(0, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32));
+
+        /**
+         * Set the IEEE 802.15.4z preamble code index to use when transmitting
+         *
+         * <p>Valid values are in the ranges: [0], [13-16], [21-32]
+         *
+         * @param transmitPreambleCodeIndex preamble code index to use for transmitting
+         * @throws IllegalArgumentException if {@code transmitPreambleCodeIndex} is invalid.
+         */
+        public Builder setTransmitPreambleCodeIndex(int transmitPreambleCodeIndex) {
+            if (!VALID_TX_PREAMBLE_CODES.contains(transmitPreambleCodeIndex)) {
+                throw new IllegalArgumentException(
+                        "Invalid transmit preamble: " + transmitPreambleCodeIndex);
+            }
+            mTransmitPreambleCodeIndex = transmitPreambleCodeIndex;
+            return this;
+        }
+
+        private static final Set<Integer> VALID_RX_PREAMBLE_CODES = new HashSet<Integer>(
+                Arrays.asList(0, 16, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32));
+
+        /**
+         * Set the IEEE 802.15.4z preamble code index to use when receiving
+         *
+         * Valid values are in the ranges: [0], [16-32]
+         *
+         * @param receivePreambleCodeIndex preamble code index to use for receiving
+         * @throws IllegalArgumentException if {@code receivePreambleCodeIndex} is invalid.
+         */
+        public Builder setReceivePreambleCodeIndex(int receivePreambleCodeIndex) {
+            if (!VALID_RX_PREAMBLE_CODES.contains(receivePreambleCodeIndex)) {
+                throw new IllegalArgumentException(
+                        "Invalid receive preamble: " + receivePreambleCodeIndex);
+            }
+            mReceivePreambleCodeIndex = receivePreambleCodeIndex;
+            return this;
+        }
+
+        /**
+         * Set the IEEE 802.15.4z PHY packet type when STS is used
+         *
+         * @param stsPhyPacketType PHY packet type when STS is used
+         * @throws IllegalArgumentException if {@code stsPhyPacketType} is invalid.
+         */
+        public Builder setStsPhPacketType(@StsPhyPacketType int stsPhyPacketType) {
+            if (stsPhyPacketType != STS_PHY_PACKET_TYPE_SP0
+                    && stsPhyPacketType != STS_PHY_PACKET_TYPE_SP1
+                    && stsPhyPacketType != STS_PHY_PACKET_TYPE_SP2
+                    && stsPhyPacketType != STS_PHY_PACKET_TYPE_SP3) {
+                throw new IllegalArgumentException("unknown StsPhyPacketType: " + stsPhyPacketType);
+            }
+
+            mStsPhyPacketType = stsPhyPacketType;
+            return this;
+        }
+
+        /**
+         * Set the specification parameters
+         *
+         * <p>Creates a copy of the parameters
+         *
+         * @param parameters specification parameters built from support library
+         */
+        public Builder setSpecificationParameters(@NonNull PersistableBundle parameters) {
+            mSpecificationParameters = new PersistableBundle(parameters);
+            return this;
+        }
+
+        /**
+         * Build the {@link RangingParams} object.
+         *
+         * @throws IllegalStateException if required parameters are missing
+         */
+        public RangingParams build() {
+            if (mSamplePeriod == null) {
+                throw new IllegalStateException("No sample period provided");
+            }
+
+            if (mLocalDeviceAddress == null) {
+                throw new IllegalStateException("Local device address not provided");
+            }
+
+            if (mRemoteDeviceAddresses.size() == 0) {
+                throw new IllegalStateException("No remote device address(es) provided");
+            }
+
+            return new RangingParams(mIsInitiator, mIsController, mSamplePeriod,
+                    mLocalDeviceAddress, mRemoteDeviceAddresses, mChannelNumber,
+                    mTransmitPreambleCodeIndex, mReceivePreambleCodeIndex, mStsPhyPacketType,
+                    mSpecificationParameters);
+        }
     }
 }

core/java/android/uwb/RangingReport.java

@@ -18,6 +18,7 @@ package android.uwb;
 
 import android.annotation.NonNull;
 
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -26,6 +27,12 @@ import java.util.List;
  * @hide
  */
 public final class RangingReport {
+    private final List<RangingMeasurement> mRangingMeasurements;
+
+    private RangingReport(@NonNull List<RangingMeasurement> rangingMeasurements) {
+        mRangingMeasurements = rangingMeasurements;
+    }
+
     /**
      * Get a {@link List} of {@link RangingMeasurement} objects in the last measurement interval
      * <p>The underlying UWB adapter may choose to do multiple measurements in each ranging
@@ -38,7 +45,57 @@ public final class RangingReport {
      */
     @NonNull
     public List<RangingMeasurement> getMeasurements() {
-        throw new UnsupportedOperationException();
+        return mRangingMeasurements;
+    }
+
+    /**
+     * Builder for {@link RangingReport} object
+     */
+    public static final class Builder {
+        List<RangingMeasurement> mMeasurements = new ArrayList<>();
+
+        /**
+         * Add a single {@link RangingMeasurement}
+         *
+         * @param rangingMeasurement a ranging measurement
+         */
+        public Builder addMeasurement(@NonNull RangingMeasurement rangingMeasurement) {
+            mMeasurements.add(rangingMeasurement);
+            return this;
+        }
+
+        /**
+         * Add a {@link List} of {@link RangingMeasurement}s
+         *
+         * @param rangingMeasurements {@link List} of {@link RangingMeasurement}s to add
+         */
+        public Builder addMeasurements(@NonNull List<RangingMeasurement> rangingMeasurements) {
+            mMeasurements.addAll(rangingMeasurements);
+            return this;
+        }
+
+        /**
+         * Build the {@link RangingReport} object
+         *
+         * @throws IllegalStateException if measurements are not in monotonically increasing order
+         */
+        public RangingReport build() {
+            // Verify that all measurement timestamps are monotonically increasing
+            RangingMeasurement prevMeasurement = null;
+            for (int curIndex = 0; curIndex < mMeasurements.size(); curIndex++) {
+                RangingMeasurement curMeasurement = mMeasurements.get(curIndex);
+                if (prevMeasurement != null
+                        && (prevMeasurement.getElapsedRealtimeNanos()
+                                > curMeasurement.getElapsedRealtimeNanos())) {
+                    throw new IllegalStateException(
+                            "Timestamp (" + curMeasurement.getElapsedRealtimeNanos()
+                            + ") at index " + curIndex + " is less than previous timestamp ("
+                            + prevMeasurement.getElapsedRealtimeNanos() + ")");
+                }
+                prevMeasurement = curMeasurement;
+            }
+            return new RangingReport(mMeasurements);
+        }
     }
 }
 

core/java/android/uwb/RangingSession.java

@@ -0,0 +1,148 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.uwb;
+
+import android.annotation.IntDef;
+import android.os.PersistableBundle;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.concurrent.Executor;
+
+/**
+ * This class provides a way to control an active UWB ranging session.
+ * <p>It also defines the required {@link RangingSession.Callback} that must be implemented
+ * in order to be notified of UWB ranging results and status events related to the
+ * {@link RangingSession}.
+ *
+ * <p>To get an instance of {@link RangingSession}, first use
+ * {@link UwbManager#openRangingSession(RangingParams, Executor, Callback)} to request to open a
+ * session. Once the session is opened, a {@link RangingSession} object is provided through
+ * {@link RangingSession.Callback#onOpenSuccess(RangingSession, PersistableBundle)}. If opening a
+ * session fails, the failure is reported through {@link RangingSession.Callback#onClosed(int)} with
+ * the failure reason.
+ *
+ * @hide
+ */
+public final class RangingSession implements AutoCloseable {
+    /**
+     * Interface for receiving {@link RangingSession} events
+     */
+    public interface Callback {
+        /**
+         * Invoked when {@link UwbManager#openRangingSession(RangingParams, Executor, Callback)}
+         * is successful
+         *
+         * @param session the newly opened {@link RangingSession}
+         * @param sessionInfo session specific parameters from lower layers
+         */
+        void onOpenSuccess(RangingSession session, PersistableBundle sessionInfo);
+
+        @Retention(RetentionPolicy.SOURCE)
+        @IntDef(value = {
+                CLOSE_REASON_UNKNOWN,
+                CLOSE_REASON_LOCAL_CLOSE_API,
+                CLOSE_REASON_LOCAL_BAD_PARAMETERS,
+                CLOSE_REASON_LOCAL_GENERIC_ERROR,
+                CLOSE_REASON_LOCAL_MAX_SESSIONS_REACHED,
+                CLOSE_REASON_LOCAL_SYSTEM_POLICY,
+                CLOSE_REASON_REMOTE_GENERIC_ERROR,
+                CLOSE_REASON_REMOTE_REQUEST})
+        @interface CloseReason {}
+
+        /**
+         * Indicates that the session was closed or failed to open due to an unknown reason
+         */
+        int CLOSE_REASON_UNKNOWN = 0;
+
+        /**
+         * Indicates that the session was closed or failed to open because
+         * {@link AutoCloseable#close()} or {@link RangingSession#close()} was called
+         */
+        int CLOSE_REASON_LOCAL_CLOSE_API = 1;
+
+        /**
+         * Indicates that the session failed to open due to erroneous parameters passed
+         * to {@link UwbManager#openRangingSession(RangingParams, Executor, Callback)}
+         */
+        int CLOSE_REASON_LOCAL_BAD_PARAMETERS = 2;
+
+        /**
+         * Indicates that the session was closed due to some local error on this device besides the
+         * error code already listed
+         */
+        int CLOSE_REASON_LOCAL_GENERIC_ERROR = 3;
+
+        /**
+         * Indicates that the session failed to open because the number of currently open sessions
+         * is equal to {@link UwbManager#getMaxSimultaneousSessions()}
+         */
+        int CLOSE_REASON_LOCAL_MAX_SESSIONS_REACHED = 4;
+
+        /**
+         * Indicates that the session was closed or failed to open due to local system policy, such
+         * as privacy policy, power management policy, permissions, and more.
+         */
+        int CLOSE_REASON_LOCAL_SYSTEM_POLICY = 5;
+
+        /**
+         * Indicates that the session was closed or failed to open due to an error with the remote
+         * device besides error codes already listed.
+         */
+        int CLOSE_REASON_REMOTE_GENERIC_ERROR = 6;
+
+        /**
+         * Indicates that the session was closed or failed to open due to an explicit request from
+         * the remote device.
+         */
+        int CLOSE_REASON_REMOTE_REQUEST = 7;
+
+        /**
+         * Invoked when session is either closed spontaneously, or per user request via
+         * {@link RangingSession#close()} or {@link AutoCloseable#close()}, or when session failed
+         * to open.
+         *
+         * @param reason reason for the session closure
+         */
+        void onClosed(@CloseReason int reason);
+
+        /**
+         * Called once per ranging interval even when a ranging measurement fails
+         *
+         * @param rangingReport ranging report for this interval's measurements
+         */
+        void onReportReceived(RangingReport rangingReport);
+    }
+
+    /**
+     * Close the ranging session
+     * <p>If this session is currently open, it will close and stop the session.
+     * <p>If the session is in the process of being opened, it will attempt to stop the session from
+     * being opened.
+     * <p>If the session is already closed, the registered {@link Callback#onClosed(int)} callback
+     * will still be invoked.
+     *
+     * <p>{@link Callback#onClosed(int)} will be invoked using the same callback
+     * object given to {@link UwbManager#openRangingSession(RangingParams, Executor, Callback)} when
+     * the {@link RangingSession} was opened. The callback will be invoked after each call to
+     * {@link #close()}, even if the {@link RangingSession} is already closed.
+     */
+    @Override
+    public void close() {
+        throw new UnsupportedOperationException();
+    }
+}

core/java/android/uwb/UwbManager.java

@@ -266,4 +266,33 @@ public final class UwbManager {
     public int getMaxRemoteDevicesPerResponderSession() {
         throw new UnsupportedOperationException();
     }
+
+    /**
+     * Open a {@link RangingSession} with the given parameters
+     * <p>This function is asynchronous and will return before ranging begins. The
+     * {@link RangingSession.Callback#onOpenSuccess(RangingSession, PersistableBundle)} function is
+     * called with a {@link RangingSession} object used to control ranging when the session is
+     * successfully opened.
+     *
+     * <p>If a session cannot be opened, then {@link RangingSession.Callback#onClosed(int)} will be
+     * invoked with the appropriate {@link RangingSession.Callback.CloseReason}.
+     *
+     * <p>An open {@link RangingSession} will be automatically closed if client application process
+     * dies.
+     *
+     * @param params {@link RangingParams} used to initialize this {@link RangingSession}
+     * @param executor {@link Executor} to run callbacks
+     * @param callbacks {@link RangingSession.Callback} to associate with the
+     *                  {@link RangingSession} that is being opened.
+     *
+     * @return an {@link AutoCloseable} that is able to be used to close or cancel the opening of a
+     *         {@link RangingSession} that has been requested through {@link #openRangingSession}
+     *         but has not yet been made available by
+     *         {@link RangingSession.Callback#onOpenSuccess}.
+     */
+    @NonNull
+    public AutoCloseable openRangingSession(@NonNull RangingParams params,
+            @NonNull Executor executor, @NonNull RangingSession.Callback callbacks) {
+        throw new UnsupportedOperationException();
+    }
 }