Merge "Add UwbManager API Stubs" am: 2c48ea2f87 am: 4980bde1e2 am: 246d438d6c (95f6d698) · Commits · e / os / android_frameworks_base

core/java/android/uwb/UwbManager.java

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		/*
		* 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.annotation.NonNull;
		import android.annotation.SuppressLint;
		import android.os.PersistableBundle;

		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.List;
		import java.util.Set;
		import java.util.concurrent.Executor;

		/**
		* This class provides a way to perform Ultra Wideband (UWB) operations such as querying the
		* device's capabilities and determining the distance and angle between the local device and a
		* remote device.
		*
		* <p>To get a {@link UwbManager}, call the <code>Context.getSystemService(UwbManager.class)</code>.
		*
		* @hide
		*/
		public final class UwbManager {
		/**
		* Interface for receiving UWB adapter state changes
		*/
		public interface AdapterStateCallback {
		@Retention(RetentionPolicy.SOURCE)
		@IntDef(value = {
		STATE_CHANGED_REASON_SESSION_STARTED,
		STATE_CHANGED_REASON_ALL_SESSIONS_CLOSED,
		STATE_CHANGED_REASON_SYSTEM_POLICY,
		STATE_CHANGED_REASON_SYSTEM_BOOT,
		STATE_CHANGED_REASON_ERROR_UNKNOWN})
		@interface StateChangedReason {}

		/**
		* Indicates that the state change was due to opening of first UWB session
		*/
		int STATE_CHANGED_REASON_SESSION_STARTED = 0;

		/**
		* Indicates that the state change was due to closure of all UWB sessions
		*/
		int STATE_CHANGED_REASON_ALL_SESSIONS_CLOSED = 1;

		/**
		* Indicates that the state change was due to changes in system policy
		*/
		int STATE_CHANGED_REASON_SYSTEM_POLICY = 2;

		/**
		* Indicates that the current state is due to a system boot
		*/
		int STATE_CHANGED_REASON_SYSTEM_BOOT = 3;

		/**
		* Indicates that the state change was due to some unknown error
		*/
		int STATE_CHANGED_REASON_ERROR_UNKNOWN = 4;

		/**
		* Invoked when underlying UWB adapter's state is changed
		* <p>Invoked with the adapter's current state after registering an
		* {@link AdapterStateCallback} using
		* {@link UwbManager#registerAdapterStateCallback(Executor, AdapterStateCallback)}.
		*
		* <p>Possible values for the state to change are
		* {@link #STATE_CHANGED_REASON_SESSION_STARTED},
		* {@link #STATE_CHANGED_REASON_ALL_SESSIONS_CLOSED},
		* {@link #STATE_CHANGED_REASON_SYSTEM_POLICY},
		* {@link #STATE_CHANGED_REASON_SYSTEM_BOOT},
		* {@link #STATE_CHANGED_REASON_ERROR_UNKNOWN}.
		*
		* @param isEnabled true when UWB adapter is enabled, false when it is disabled
		* @param reason the reason for the state change
		*/
		void onStateChanged(boolean isEnabled, @StateChangedReason int reason);
		}

		/**
		* Use <code>Context.getSystemService(UwbManager.class)</code> to get an instance.
		*/
		private UwbManager() {
		throw new UnsupportedOperationException();
		}
		/**
		* Register an {@link AdapterStateCallback} to listen for UWB adapter state changes
		* <p>The provided callback will be invoked by the given {@link Executor}.
		*
		* <p>When first registering a callback, the callbacks's
		* {@link AdapterStateCallback#onStateChanged(boolean, int)} is immediately invoked to indicate
		* the current state of the underlying UWB adapter with the most recent
		* {@link AdapterStateCallback.StateChangedReason} that caused the change.
		*
		* @param executor an {@link Executor} to execute given callback
		* @param callback user implementation of the {@link AdapterStateCallback}
		*/
		public void registerAdapterStateCallback(Executor executor, AdapterStateCallback callback) {
		throw new UnsupportedOperationException();
		}

		/**
		* Unregister the specified {@link AdapterStateCallback}
		* <p>The same {@link AdapterStateCallback} object used when calling
		* {@link #registerAdapterStateCallback(Executor, AdapterStateCallback)} must be used.
		*
		* <p>Callbacks are automatically unregistered when application process goes away
		*
		* @param callback user implementation of the {@link AdapterStateCallback}
		*/
		public void unregisterAdapterStateCallback(AdapterStateCallback callback) {
		throw new UnsupportedOperationException();
		}

		/**
		* Get a {@link PersistableBundle} with the supported UWB protocols and parameters.
		* <p>The {@link PersistableBundle} should be parsed using a support library
		*
		* <p>Android reserves the '^android.*' namespace</p>
		*
		* @return {@link PersistableBundle} of the device's supported UWB protocols and parameters
		*/
		@NonNull
		public PersistableBundle getSpecificationInfo() {
		throw new UnsupportedOperationException();
		}

		/**
		* Check if ranging is supported, regardless of ranging method
		*
		* @return true if ranging is supported
		*/
		public boolean isRangingSupported() {
		throw new UnsupportedOperationException();
		}

		@Retention(RetentionPolicy.SOURCE)
		@IntDef(value = {
		ANGLE_OF_ARRIVAL_SUPPORT_TYPE_NONE,
		ANGLE_OF_ARRIVAL_SUPPORT_TYPE_2D,
		ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_HEMISPHERICAL,
		ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_SPHERICAL})
		public @interface AngleOfArrivalSupportType {}

		/**
		* Indicate absence of support for angle of arrival measurement
		*/
		public static final int ANGLE_OF_ARRIVAL_SUPPORT_TYPE_NONE = 1;

		/**
		* Indicate support for planar angle of arrival measurement, due to antenna
		* limitation. Typically requires at least two antennas.
		*/
		public static final int ANGLE_OF_ARRIVAL_SUPPORT_TYPE_2D = 2;

		/**
		* Indicate support for three dimensional angle of arrival measurement.
		* Typically requires at least three antennas. However, due to antenna
		* arrangement, a platform may only support hemi-spherical azimuth angles
		* ranging from -pi/2 to pi/2
		*/
		public static final int ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_HEMISPHERICAL = 2;

		/**
		* Indicate support for three dimensional angle of arrival measurement.
		* Typically requires at least three antennas. This mode supports full
		* azimuth angles ranging from -pi to pi.
		*/
		public static final int ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_SPHERICAL = 3;


		/**
		* Gets the {@link AngleOfArrivalSupportType} supported on this platform
		* <p>Possible return values are
		* {@link #ANGLE_OF_ARRIVAL_SUPPORT_TYPE_NONE},
		* {@link #ANGLE_OF_ARRIVAL_SUPPORT_TYPE_2D},
		* {@link #ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_HEMISPHERICAL},
		* {@link #ANGLE_OF_ARRIVAL_SUPPORT_TYPE_3D_SPHERICAL}.
		*
		* @return angle of arrival type supported
		*/
		@AngleOfArrivalSupportType
		public int getAngleOfArrivalSupport() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get a {@link List} of supported channel numbers based on the device's current location
		* <p>The returned values are ordered by the system's desired ordered of use, with the first
		* entry being the most preferred.
		*
		* <p>Channel numbers are defined based on the IEEE 802.15.4z standard for UWB.
		*
		* @return {@link List} of supported channel numbers ordered by preference
		*/
		@NonNull
		public List<Integer> getSupportedChannelNumbers() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get a {@link List} of supported preamble code indices
		* <p> Preamble code indices are defined based on the IEEE 802.15.4z standard for UWB.
		*
		* @return {@link List} of supported preamble code indices
		*/
		@NonNull
		public Set<Integer> getSupportedPreambleCodeIndices() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get the timestamp resolution for events in nanoseconds
		* <p>This value defines the maximum error of all timestamps for events reported to
		* {@link RangingSession.Callback}.
		*
		* @return the timestamp resolution in nanoseconds
		*/
		@SuppressLint("MethodNameUnits")
		public long elapsedRealtimeResolutionNanos() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get the number of simultaneous sessions allowed in the system
		*
		* @return the maximum allowed number of simultaneously open {@link RangingSession} instances.
		*/
		public int getMaxSimultaneousSessions() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get the maximum number of remote devices in a {@link RangingSession} when the local device
		* is the initiator.
		*
		* @return the maximum number of remote devices per {@link RangingSession}
		*/
		public int getMaxRemoteDevicesPerInitiatorSession() {
		throw new UnsupportedOperationException();
		}

		/**
		* Get the maximum number of remote devices in a {@link RangingSession} when the local device
		* is a responder.
		*
		* @return the maximum number of remote devices per {@link RangingSession}
		*/
		public int getMaxRemoteDevicesPerResponderSession() {
		throw new UnsupportedOperationException();
		}
		}