Add Session2Command and Session2CommandGroup (bf37bd47) · Commits · e / os / android_frameworks_base

media/java/android/media/Session2Command.java

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+596 −0

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		/*
		* Copyright 2018 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.media;

		import android.annotation.IntDef;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.os.Bundle;
		import android.os.Parcel;
		import android.os.Parcelable;
		import android.text.TextUtils;
		import android.util.ArrayMap;

		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.List;
		import java.util.Objects;

		/**
		* Define a command that a {@link MediaController2} can send to a {@link MediaSession2}.
		* <p>
		* If {@link #getCommandCode()} isn't {@link #COMMAND_CODE_CUSTOM}), it's predefined command.
		* If {@link #getCommandCode()} is {@link #COMMAND_CODE_CUSTOM}), it's custom command and
		* {@link #getCustomCommand()} shouldn't be {@code null}.
		* <p>
		* This API is not generally intended for third party application developers.
		* Use the <a href="{@docRoot}jetpack/androidx.html">AndroidX</a>
		* <a href="{@docRoot}reference/androidx/media2/package-summary.html">Media2 Library</a>
		* for consistent behavior across all devices.
		* </p>
		* @hide
		*/
		public final class Session2Command implements Parcelable {
		/**
		* The first version of session commands. This version is for commands introduced in API 29.
		* <p>
		* This would be used to specify which commands should be added by
		* {@link Session2CommandGroup.Builder#addAllPredefinedCommands(int)}
		*
		* @see Session2CommandGroup.Builder#addAllPredefinedCommands(int)
		*/
		public static final int COMMAND_VERSION_1 = 1;

		/**
		* @hide
		*/
		public static final int COMMAND_VERSION_CURRENT = COMMAND_VERSION_1;

		/**
		* @hide
		*/
		@IntDef({COMMAND_VERSION_1})
		@Retention(RetentionPolicy.SOURCE)
		public @interface CommandVersion {}

		/**
		* @hide
		*/
		@IntDef({COMMAND_CODE_CUSTOM,
		COMMAND_CODE_PLAYER_PLAY,
		COMMAND_CODE_PLAYER_PAUSE,
		COMMAND_CODE_PLAYER_PREPARE,
		COMMAND_CODE_PLAYER_SEEK_TO,
		COMMAND_CODE_PLAYER_SET_SPEED,
		COMMAND_CODE_PLAYER_GET_PLAYLIST,
		COMMAND_CODE_PLAYER_SET_PLAYLIST,
		COMMAND_CODE_PLAYER_SKIP_TO_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_SKIP_TO_PREVIOUS_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_SKIP_TO_NEXT_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_SET_SHUFFLE_MODE,
		COMMAND_CODE_PLAYER_SET_REPEAT_MODE,
		COMMAND_CODE_PLAYER_GET_PLAYLIST_METADATA,
		COMMAND_CODE_PLAYER_ADD_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_REMOVE_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_REPLACE_PLAYLIST_ITEM,
		COMMAND_CODE_PLAYER_GET_CURRENT_MEDIA_ITEM,
		COMMAND_CODE_PLAYER_UPDATE_LIST_METADATA,
		COMMAND_CODE_PLAYER_SET_MEDIA_ITEM,
		COMMAND_CODE_VOLUME_SET_VOLUME,
		COMMAND_CODE_VOLUME_ADJUST_VOLUME,
		COMMAND_CODE_SESSION_FAST_FORWARD,
		COMMAND_CODE_SESSION_REWIND,
		COMMAND_CODE_SESSION_SKIP_FORWARD,
		COMMAND_CODE_SESSION_SKIP_BACKWARD,
		COMMAND_CODE_SESSION_SET_RATING,
		COMMAND_CODE_LIBRARY_GET_LIBRARY_ROOT,
		COMMAND_CODE_LIBRARY_SUBSCRIBE,
		COMMAND_CODE_LIBRARY_UNSUBSCRIBE,
		COMMAND_CODE_LIBRARY_GET_CHILDREN,
		COMMAND_CODE_LIBRARY_GET_ITEM,
		COMMAND_CODE_LIBRARY_SEARCH,
		COMMAND_CODE_LIBRARY_GET_SEARCH_RESULT
		})
		@Retention(RetentionPolicy.SOURCE)
		public @interface CommandCode {}

		/**
		* Command code for the custom command which can be defined by string action in the
		* {@link Session2Command}.
		*/
		public static final int COMMAND_CODE_CUSTOM = 0;

		////////////////////////////////////////////////////////////////////////////////////////////////
		// Player commands (i.e. commands to {@link Session2Player})
		////////////////////////////////////////////////////////////////////////////////////////////////
		static final ArrayMap<Integer, Range> VERSION_PLAYER_COMMANDS_MAP = new ArrayMap<>();
		static final ArrayMap<Integer, Range> VERSION_PLAYER_PLAYLIST_COMMANDS_MAP = new ArrayMap<>();

		// TODO: check the link tag, and reassign int values properly.
		/**
		* Command code for {@link MediaController2#play()}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info,
		* Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_PLAY = 10000;

		/**
		* Command code for {@link MediaController2#pause()}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info,
		* Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_PAUSE = 10001;

		/**
		* Command code for {@link MediaController2#prepare()}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info,
		* Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_PREPARE = 10002;

		/**
		* Command code for {@link MediaController2#seekTo(long)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info,
		* Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SEEK_TO = 10003;

		/**
		* Command code for {@link MediaController2#setPlaybackSpeed(float)}}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session22Callback#onCommandRequest(MediaSession2, Controller2Info,
		* Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SET_SPEED = 10004;

		/**
		* Command code for {@link MediaController2#getPlaylist()}. This will expose metadata
		* information to the controller.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_GET_PLAYLIST = 10005;

		/**
		* Command code for {@link MediaController2#setPlaylist(List, MediaMetadata)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SET_PLAYLIST = 10006;

		/**
		* Command code for {@link MediaController2#skipToPlaylistItem(int)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SKIP_TO_PLAYLIST_ITEM = 10007;

		/**
		* Command code for {@link MediaController2#skipToPreviousPlaylistItem()}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(
		* MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SKIP_TO_PREVIOUS_PLAYLIST_ITEM = 10008;

		/**
		* Command code for {@link MediaController2#skipToNextPlaylistItem()}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the {@link Session2Callback#onCommandRequest(
		* MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/

		public static final int COMMAND_CODE_PLAYER_SKIP_TO_NEXT_PLAYLIST_ITEM = 10009;

		/**
		* Command code for {@link MediaController2#setShuffleMode(int)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SET_SHUFFLE_MODE = 10010;

		/**
		* Command code for {@link MediaController2#setRepeatMode(int)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SET_REPEAT_MODE = 10011;

		/**
		* Command code for {@link MediaController2#getPlaylistMetadata()}. This will expose metadata
		* information to the controller.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_GET_PLAYLIST_METADATA = 10012;

		/**
		* Command code for {@link MediaController2#addPlaylistItem(int, String)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_ADD_PLAYLIST_ITEM = 10013;

		/**
		* Command code for {@link MediaController2#removePlaylistItem(int, String)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_REMOVE_PLAYLIST_ITEM = 10014;

		/**
		* Command code for {@link MediaController2#replacePlaylistItem(int, String)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_REPLACE_PLAYLIST_ITEM = 10015;

		/**
		* Command code for {@link MediaController2#getCurrentMediaItem()}. This will expose metadata
		* information to the controller.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_GET_CURRENT_MEDIA_ITEM = 10016;

		/**
		* Command code for {@link MediaController2#updatePlaylistMetadata(MediaMetadata)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_UPDATE_LIST_METADATA = 10017;

		/**
		* Command code for {@link MediaController2#setMediaItem(String)}.
		* <p>
		* Command would be sent directly to the player if the session doesn't reject the request
		* through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_PLAYER_SET_MEDIA_ITEM = 10018;

		static {
		VERSION_PLAYER_COMMANDS_MAP.put(COMMAND_VERSION_1,
		new Range(COMMAND_CODE_PLAYER_PLAY, COMMAND_CODE_PLAYER_SET_MEDIA_ITEM));
		}

		static {
		VERSION_PLAYER_PLAYLIST_COMMANDS_MAP.put(COMMAND_VERSION_1,
		new Range(COMMAND_CODE_PLAYER_GET_PLAYLIST,
		COMMAND_CODE_PLAYER_SET_MEDIA_ITEM));
		}

		////////////////////////////////////////////////////////////////////////////////////////////////
		// Volume commands (i.e. commands to {@link AudioManager} or {@link RouteMediaPlayer})
		////////////////////////////////////////////////////////////////////////////////////////////////
		static final ArrayMap<Integer, Range> VERSION_VOLUME_COMMANDS_MAP = new ArrayMap<>();

		/**
		* Command code for {@link MediaController2#setVolumeTo(int, int)}.
		* <p>
		* <p>
		* If the session doesn't reject the request through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)},
		* command would adjust the device volume. It would send to the player directly only if it's
		* remote player. See RouteMediaPlayer for a remote player.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_VOLUME_SET_VOLUME = 30000;

		/**
		* Command code for {@link MediaController2#adjustVolume(int, int)}.
		* <p>
		* If the session doesn't reject the request through the
		* {@link Session2Callback#onCommandRequest(MediaSession2, Controller2Info, Session2Command)},
		* command would adjust the device volume. It would send to the player directly only if it's
		* remote player. See RouteMediaPlayer for a remote player.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_VOLUME_ADJUST_VOLUME = 30001;

		static {
		VERSION_VOLUME_COMMANDS_MAP.put(COMMAND_VERSION_1,
		new Range(COMMAND_CODE_VOLUME_SET_VOLUME,
		COMMAND_CODE_VOLUME_ADJUST_VOLUME));
		}

		////////////////////////////////////////////////////////////////////////////////////////////////
		// Session commands (i.e. commands to {@link MediaSession2#Session2Callback})
		////////////////////////////////////////////////////////////////////////////////////////////////
		static final ArrayMap<Integer, Range> VERSION_SESSION_COMMANDS_MAP = new ArrayMap<>();

		/**
		* Command code for {@link MediaController2#fastForward()}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_SESSION_FAST_FORWARD = 40000;

		/**
		* Command code for {@link MediaController2#rewind()}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_SESSION_REWIND = 40001;

		/**
		* Command code for {@link MediaController2#skipForward()}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_SESSION_SKIP_FORWARD = 40002;

		/**
		* Command code for {@link MediaController2#skipBackward()}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_SESSION_SKIP_BACKWARD = 40003;

		/**
		* Command code for {@link MediaController2#setRating(String, Rating)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_SESSION_SET_RATING = 40010;

		public static final Parcelable.Creator<Session2Command> CREATOR =
		new Parcelable.Creator<Session2Command>() {
		@Override
		public Session2Command createFromParcel(Parcel in) {
		return new Session2Command(in);
		}

		@Override
		public Session2Command[] newArray(int size) {
		return new Session2Command[size];
		}
		};

		static {
		VERSION_SESSION_COMMANDS_MAP.put(COMMAND_VERSION_1,
		new Range(COMMAND_CODE_SESSION_FAST_FORWARD, COMMAND_CODE_SESSION_SET_RATING));
		}

		////////////////////////////////////////////////////////////////////////////////////////////////
		// Session commands (i.e. commands to {@link MediaLibrarySession#MediaLibrarySessionCallback})
		////////////////////////////////////////////////////////////////////////////////////////////////
		static final ArrayMap<Integer, Range> VERSION_LIBRARY_COMMANDS_MAP = new ArrayMap<>();

		/**
		* Command code for {@link MediaBrowser2#getLibraryRoot(Library2Params)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_GET_LIBRARY_ROOT = 50000;

		/**
		* Command code for {@link MediaBrowser2#subscribe(String, Library2Params)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_SUBSCRIBE = 50001;

		/**
		* Command code for {@link MediaBrowser2#unsubscribe(String)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_UNSUBSCRIBE = 50002;

		/**
		* Command code for {@link MediaBrowser2#getChildren(String, int, int, Library2Params)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_GET_CHILDREN = 50003;

		/**
		* Command code for {@link MediaBrowser2#getItem(String)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_GET_ITEM = 50004;

		/**
		* Command code for {@link MediaBrowser2#search(String, LibraryParams)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_SEARCH = 50005;

		/**
		* Command code for {@link MediaBrowser2#getSearchResult(String, int, int, Library2Params)}.
		* <p>
		* Code version is {@link #COMMAND_VERSION_1}.
		*/
		public static final int COMMAND_CODE_LIBRARY_GET_SEARCH_RESULT = 50006;

		static {
		VERSION_LIBRARY_COMMANDS_MAP.put(COMMAND_VERSION_1,
		new Range(COMMAND_CODE_LIBRARY_GET_LIBRARY_ROOT,
		COMMAND_CODE_LIBRARY_GET_SEARCH_RESULT));
		}

		@CommandCode private final int mCommandCode;
		// Nonnull if it's custom command
		private final String mCustomCommand;
		private final Bundle mExtras;

		/**
		* Constructor for creating a predefined command.
		*
		* @param commandCode A command code for predefined command.
		*/
		public Session2Command(@CommandCode int commandCode) {
		if (commandCode == COMMAND_CODE_CUSTOM) {
		throw new IllegalArgumentException("commandCode shouldn't be COMMAND_CODE_CUSTOM");
		}
		mCommandCode = commandCode;
		mCustomCommand = null;
		mExtras = null;
		}

		/**
		* Constructor for creating a custom command.
		*
		* @param action The action of this custom command.
		* @param extras An extra bundle for this custom command.
		*/
		public Session2Command(@NonNull String action, @Nullable Bundle extras) {
		if (action == null) {
		throw new IllegalArgumentException("action shouldn't be null");
		}
		mCommandCode = COMMAND_CODE_CUSTOM;
		mCustomCommand = action;
		mExtras = extras;
		}

		/**
		* Used by parcelable creator.
		*/
		@SuppressWarnings("WeakerAccess") /* synthetic access */
		Session2Command(Parcel in) {
		mCommandCode = in.readInt();
		mCustomCommand = in.readString();
		mExtras = in.readBundle();
		}

		/**
		* Gets the command code of a predefined command.
		* This will return {@link #COMMAND_CODE_CUSTOM} for a custom command.
		*/
		public @CommandCode int getCommandCode() {
		return mCommandCode;
		}

		/**
		* Gets the action of a custom command.
		* This will return {@code null} for a predefined command.
		*/
		public @Nullable String getCustomCommand() {
		return mCustomCommand;
		}

		/**
		* Gets the extra bundle of a custom command.
		* This will return {@code null} for a predefined command.
		*/
		public @Nullable Bundle getExtras() {
		return mExtras;
		}

		@Override
		public int describeContents() {
		return 0;
		}

		@Override
		public void writeToParcel(Parcel dest, int flags) {
		dest.writeInt(mCommandCode);
		dest.writeString(mCustomCommand);
		dest.writeBundle(mExtras);
		}

		@Override
		public boolean equals(Object obj) {
		if (!(obj instanceof Session2Command)) {
		return false;
		}
		Session2Command other = (Session2Command) obj;
		return mCommandCode == other.mCommandCode
		&& TextUtils.equals(mCustomCommand, other.mCustomCommand);
		}

		@Override
		public int hashCode() {
		return Objects.hash(mCustomCommand, mCommandCode);
		}

		@SuppressWarnings("WeakerAccess") /* synthetic access */
		static final class Range {
		public final int lower;
		public final int upper;

		Range(int lower, int upper) {
		this.lower = lower;
		this.upper = upper;
		}
		}
		}

media/java/android/media/Session2CommandGroup.java

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